tag:blogger.com,1999:blog-36211985575894343422024-03-13T11:04:17.100-07:00Phase Change MaterialsPhase Change Materials (PCM) oscillate between solid and liquid phase within a certain temperature range (Mansfield). When the environment’s temperature is higher than that of the PCM, heat transfers from the surroundings to the material, which creates a cooling effect and changes PCM’s state from solid to liquid. When the environment’s temperature is lower than that of the PCM, heat transfers from the PCM to the surroundings, generating a warming effect and PCM changes back to its solid state.savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.comBlogger25125tag:blogger.com,1999:blog-3621198557589434342.post-24775803907105083462016-01-07T09:56:00.001-08:002016-01-07T09:56:48.004-08:00<div dir="ltr" style="text-align: left;" trbidi="on">
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<span style="background-color: white; color: #141823; font-family: helvetica, arial, sans-serif; font-size: 14px; line-height: 21.4667px;">New coffee mug that leverages PCM properties of temperature control and thermal storage abilities is coming to the market</span></h3>
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<a href="http://www.prnewswire.com/news-releases/ember-introduces-worlds-most-advanced-coffee-mug-300162651.html" target="_blank">PCM coffee mug with temperature control </a><br />
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<a href="http://4.bp.blogspot.com/-30YWQKFb7OY/Vo6mRhcotDI/AAAAAAAAAw4/2uEmGMKH5A0/s1600/coffee.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="192" src="http://4.bp.blogspot.com/-30YWQKFb7OY/Vo6mRhcotDI/AAAAAAAAAw4/2uEmGMKH5A0/s320/coffee.PNG" width="320" /></a></div>
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RGEES, LLC is manufacturer of PCM based Cold Chain Refrigerants.<br />
More info: <a href="http://rgees.com/">http://rgees.com/</a></div>
savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com1tag:blogger.com,1999:blog-3621198557589434342.post-75138598798635847332013-10-24T06:56:00.000-07:002016-01-07T09:58:19.024-08:00LavaLunch with Form Stable Phase Change Material<div dir="ltr" style="text-align: left;" trbidi="on">
Did you know that hot food is easier to digest? It makes it easier for your body to absorb essential vitamins and nutrients. A hot meal consisting of home-cooked proteins, vegetables, legumes and rice offers a more nutritious option while reducing many of the harmful risks associated with processed cold foods. Elements Accessories Inc. has introduced <a href="http://www.lavalunch.com/default.asp"><span style="font-size: large;">LavaLunch</span></a> that is made of a special neoprene-like material. Combined that with their proprietary insulation and a unique a pre-heated LavaRock, LavaLunch can stay hot up to 6 hours!<br />
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LavaRock has been custom engineered for the LavaLunch application. It utilizes a proprietary Form Stable Phase Change Material that stores a large quantity of heat to maintain temperature in the range of 120 degree F to 150 degree F. Just place LavaRock warmer in the microwave for two minutes. Include it in your LavaLunchbox along with your favorite pre-heated foods. That's it, you're ready to go!</div>
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All materials used in LavaLunch are BPA-free, Phalate-free, and Non-Toxic. Our LavaRock warmers are made from organic materials. Lava Lunch is a without doubt a modern yet practical solution for a lunch bag that combines clean and simple design. Perfect for bringing a healthy, Hot, lunch from home. Each Lava Lunch comes with two Lava Rocks to maintain warmth, a side drink pocket and room for utensils. Lava Lunch is perfect for anyone looking for a stylish way to carry their hot meal on the go. You can buy your LavaLunch directly from the manufacturer <span style="font-size: large;"><a href="http://www.lavalunch.com/Buy_Hot_Lunch_Totes_s/1834.htm">Elements Accessories Inc</a>.</span></div>
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<a href="https://www.missionmainstreetgrants.com/business/detail/73798"><b><span style="font-size: large;">Vote for LavalLunch now</span></b></a> and be instrumental in securing JPMorgan Chase grant to help roll out "Lava Lunch", the only Hot-Lunchbox, to retailers across the country. </div>
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">RGEES, LLC is manufacturer of PCM based Cold Chain Refrigerants.</span><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;" /><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">More info: </span><a href="http://rgees.com/" style="background-color: white; color: #888888; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px; text-decoration: none;">http://rgees.com/</a></div>
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savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com1tag:blogger.com,1999:blog-3621198557589434342.post-31396441815828228382013-03-04T07:37:00.000-08:002016-01-07T10:10:57.003-08:00Better Pizza with Phase Change Materials<div dir="ltr" style="text-align: left;" trbidi="on">
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<span style="color: purple;"><b>After below article was written RGEES started offering special non-leaking PCM packs for hot pizza delivery. </b></span></div>
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<span style="color: purple;"><b>Please contact info@rgees.com for more info.</b></span></div>
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or many generations, pizza continues to be one of America’s favorite foods and a staple for many college students and single adults. It is a simple, unpretentious, pragmatic, allinone meal that appeases the youngest to the oldest across all ethnicities. With the ease of delivery, Americans can enjoy pizza anytime, anywhere. So, have you ever ordered a pizza and it was delivered lukewarm with gloppy cheese?</div>
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A group of pizza loving, engineering students, while taking Dr. Ravi Gorthala's heat transfer and thermal engineering class at the University of New Haven, devised an experiment using <a href="http://www.rgees.com/">phase change materials</a> for a simple and creative solution to keep pizza warm.<br />
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<a href="http://1.bp.blogspot.com/-FDdIPHiwzlg/UTS8XXtt5bI/AAAAAAAAAb8/YHmMgFYcNKk/s1600/CapturePizza1.JPG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="285" src="http://1.bp.blogspot.com/-FDdIPHiwzlg/UTS8XXtt5bI/AAAAAAAAAb8/YHmMgFYcNKk/s1600/CapturePizza1.JPG" width="400" /></a>Typically, a pizza comes out of the oven at 75C/167F . According to the students, people enjoy consuming their pizza quite warm but not too hot at 50C/122F. Most prefer their meals hot and believe the heat heightens flavors and sustains a sense of comfort. On the other hand, tongue burn is painful and lasting. Food temperature is important. Therefore, most pizza chains strive to make deliveries within 30 minutes and by using insulated delivery bags to ensure their pizzas stay hot. But with cold weather, bad traffic and GPS failure, keeping pizza hot is a common challenge that often ends in a disappointing meal.<br />
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The students experiment was simple and well done. They crafted a wooden box that would fit a 16” pizza, lined the inside walls with insulation foam of R-value 4 and left room to insert <a href="http://www.rgees.com/products.php">savENRG phase change materials</a> in food grade plastic bottles. The team ran different tests with and without the PCMs and recorded the results.<br />
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PCMs or phase change materials are any materials that change from one phase to another. The brand of savENRG PCMs maintain specific temperatures while changing its phase from a liquid to solid and back to a liquid. The students used 2 bottles of <a href="http://www.rgees.com/documents/savENRG%20PCM%20OM53P.pdf">savENRG PCM at 53C/127F</a> and these were completely melted before inserting into the pizza box. The results were predictably better with the PCMs than without but the real question is how much better?<br />
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The best result came from the 3rd and final test with 4 PCM bottles. Two bottles at <a href="http://www.rgees.com/documents/savENRG%20PCM%20OM53P.pdf">53C/127F</a> and two more at <a href="http://www.rgees.com/documents/savENRG%20PCM%2058P.pdf">58C/136F</a> were inserted into the pizza box after being fully charged. After 2 hours, the pizza recorded at 46C/115F, still deliciously hot. The proof validated by the voracious consumption of the tasty pizza by the students following the final project. The other pizza in the cardboard box without the PCM was appropriately abandoned. Just to note that both boxes with pizzas were carried to and from the presentation in cold, Connecticut, winter conditions.<br />
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The second test fared also well. It was recorded with the pizza going into the box at a lower temperature but with the addition of two bottles of PCM 53C/127F. After 2 hours, the pizza registered at 42C/108F. After 10 hours (600 minutes), the same pizza in the same box was still at 31C/88F. At this temperature, the pizza is not hot but clearly still enjoyable depending on the your level of hunger.<br />
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In the first experiment, the pizza was placed inside the insulated box at 50C/122F without the PCM. An hour later, the pizza checked at 41C/106F.<br />
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So the next time you receive your favorite pizza or delivery food, lukewarm or cold, suggest using PCMs or for that matter,consider PCMs for any foods you’d like to keep hot at anytime for any reasons.<br />
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<i><span style="font-size: x-small;">This article has been wriiten by Nina Reinhart as a summary of the experiment report. Nina Reinhart is a co-founder of <a href="http://www.rgees.com/about.php">RGEES LLC</a>, a small women owned company specializing in design and manufacture of PCM based thermal energy storage solutions. </span></i><br />
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<span style="color: #666666; font-family: Trebuchet MS, Trebuchet, Verdana, sans-serif;"><span style="background-color: white; font-size: 13.2px; line-height: 18.48px;"><b>Please send your requests </b></span></span></div>
savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com20tag:blogger.com,1999:blog-3621198557589434342.post-48955187546050397502013-01-09T12:32:00.001-08:002016-01-07T09:59:53.560-08:00Thermal Energy Storage Market to Reach $3.6 Billion Worldwide by 2020<div dir="ltr" style="text-align: left;" trbidi="on">
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<span style="font-family: inherit;">A recent Yahoo press release </span>highlighted<span style="font-family: inherit;"> a recent report from </span><a href="http://www.navigant.com/pikeresearch" style="font-family: inherit;">Pike Research</a><span style="font-family: inherit;"> that forecasts a total revenue from worldwide sales of Thermal Energy Storage (TES) to grow steadily over the remainder of this decade, reaching $3.6 billion by 2020. </span><a href="http://www.rgees.com/solutions_thermal-energy-storage.php" style="font-family: inherit;">Thermal energy storage (TES)</a><span style="font-family: inherit;"> is most often used as an effective means of shifting electrical peak load use from daytime peak periods to less expensive periods of the day or at night, saving money, stabilizing load on HVAC equipment, stabilizing load on power plants and increasing overall power generation & distribution system efficiency.</span><br />
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<span style="font-family: inherit;"><a href="http://www.pikeresearch.com/research/thermal-energy-storage">The report “Thermal Energy Storage”</a>, analyzes the market for thermal energy storage, concentrating on five major applications that currently define the commercial marketplace for thermal storage: thermal storage for heating, ventilation and air conditioning in commercial buildings; district energy systems for cooling and, in some cases, heating; turbine inlet cooling to limit generation power losses; utility and grid support applications; and high-temperature storage at concentrated solar power generation facilities.</span><br />
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<span style="font-family: inherit;">Pike Research’s analysis finds that the annual U.S. market for incremental TES capacity totals $268 million, with 246 megawatts (MW) of new capacity installed in 2011 in five market segments: packaged air conditioning, chiller TES systems, district energy, residential heat TES, and commercial heat TES. The report forecasts that the TES market will expand at a compound annual growth rate of 13.5% through 2020, resulting in an $850 million annual domestic market and cumulative TES capacity of 4,500 MW. Globally, TES is expected to grow substantially through 2020, with worldwide revenues of $3.6 billion and added capacity of 3,824 MW in that year. <a href="http://finance.yahoo.com/news/thermal-energy-storage-market-reach-100000706.html">Read the Yahoo Press Release</a>....</span><br />
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">RGEES, LLC is manufacturer of PCM based Cold Chain Refrigerants.</span><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;" /><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">More info: </span><a href="http://rgees.com/" style="background-color: white; color: #888888; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px; text-decoration: none;">http://rgees.com/</a></div>
savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com2tag:blogger.com,1999:blog-3621198557589434342.post-15538635015189919662013-01-07T11:11:00.001-08:002013-01-07T11:11:56.067-08:00CSP Industry to discuss 2013 challenges in New Delhi this March<br />
<span style="font-family: inherit;">CSP Today reported that Leaders of the concentrated solar power industry in India will discuss upcoming challenges as PV competition intensifies. The<a href="http://social.csptoday.com/emerging-markets/csp-industry-discuss-2013-challenges-new-delhi-march?utm_source=http%3a%2f%2fuk.csptoday.com%2ffc_csp_pvlz%2f&utm_medium=email&utm_campaign=CSP+ebrief+7+Jan+12+en&utm_term=Doubts+emerge+over+Argentina+CSP+plant&utm_content=1130"> publication By Beatriz Gonzalez on Jan 7, 2013</a> highlights the comments from the industry specialists. </span><br />
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<span style="font-family: inherit;">As per the report, Shubhi Gupta of Flareum Technologies, one of the companies speaking at CSP Today India 2013, explained that the industry segments in India that use heat or steam for their product process would be opting for alternatives for non-renewable fuel, and since the steam generating systems can be easily integrated with the already existing systems of the facility they are very convenient. Also, more R&D activities on this technology would help reduce the cost and make it even more efficient.</span><br />
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<span style="font-family: inherit;">Integration with conventional power plants, as well as CSP technology advancements and cost reduction are key themes of the CSP Today India 2013 agenda. Top experts from STEAG, Ingeteam, SENER India, Termopower and Abantia Instalaciones will join Flareum in discussing strategies for boosting CSP technology and competing with other energy sources. <a href="http://social.csptoday.com/emerging-markets/csp-industry-discuss-2013-challenges-new-delhi-march?utm_source=http%3a%2f%2fuk.csptoday.com%2ffc_csp_pvlz%2f&utm_medium=email&utm_campaign=CSP+ebrief+7+Jan+12+en&utm_term=Doubts+emerge+over+Argentina+CSP+plant&utm_content=1130">Read the full publication</a>. </span><br />
savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-86214022702244627132013-01-02T11:34:00.000-08:002013-01-02T11:34:48.516-08:00Global Molten Salt Thermal Energy Storage market forecast 2012 -2016<br />
<span style="font-family: inherit;">Technavio has published a market analysis report "<a href="http://www.technavio.com/content/global-molten-salt-thermal-energy-storage-market-2012-2016">Global Molten Salt Thermal Energy Storage Market 2012 - 2016</a>" where it's analysts forecast the Global Molten Salt Thermal Energy Storage market to grow at a CAGR of 17.25 percent over the period 2012-2016. Technavio is the syndicated research wing of Infiniti Research, with over 1,800 off-the-shelf reports on niche and upcoming technology markets. </span><br />
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<span style="font-family: inherit;">The key vendors dominating this market space are Abengoa Solar S.A., Areva S.A.S., General Electric (GE) Energy LLC., and Pratt and Whitney Rocketdyne Inc. The Global Molten Salt Thermal Energy Storage market has been witnessing the increase in R&D initiatives with it's application within concentrating solar power systems. NREL collaborates with industry to further the research and development (R&D) of concentrating solar power (CSP) plant and solar thermal technologies.</span><br />
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<span style="font-family: inherit;">Concentrating solar power (CSP) technology involves a power tower system using a large field of flat, sun-tracking mirrors known as heliostats to focus and concentrate sunlight onto a receiver on the top of a tower. A heat-transfer fluid heated in the receiver is used to generate steam, which, in turn, is used in a conventional turbine generator to produce electricity. Some power towers use water/steam as the heat-transfer fluid. Advanced designs are experimenting with molten salt because of its superior heat-transfer and energy-storage capabilities. The energy-storage capability, or thermal storage, allows the system to continue to dispatch electricity during cloudy weather or at night.</span><br />
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<span style="font-family: inherit;">Learn more about the use of molten salt as a key component for sustainability for concentrated solar power systems. </span><br />
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A few wine lovers discussed a serious wine shipping issue in the Wine Cellar Insider forum. One talked about his countless instances when he received wines either cooked in the summer time or frozen in the winter time, even with overnight shipping option. Another agreed that this is a serious concern and because of this the actual taste of wine could be lost.<br />
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The last mile—the final link in the distribution chain after the shipment leaves a distribution hub via a delivery truck—is a great concern for shippers. The temperature-controlled environment ends there, with the shipment on the truck. According to the Wines & Vines wine shipments sharply decline during summer months, dipping to the lowest levels during July, August and September.<br />
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<a href="http://www.rgees.com/products.php">savEnrg™ Phase Change Material (PCM)</a> offers customized solutions using PCM-HS22P with a phase-change point at 22 deg C (72 deg F). This is one of the most innovative approaches to applying an economical energy efficient temperature-control technology to develop wine shipping solutions at controlled room temperature in summer and in extreme winter months.<br />
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Calculations on a 6 bottle 0.5" EPS wine shipper wine for a maximum 14hr exposure @ 90 deg F ambient during the last mile delivery process showed a heat gain of 155 wats. Experiment conducted with 16oz of PCM-HS22P prooved adequate to maintain the shipper temperature below 80 deg F for 14hrs.<br />
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<a href="http://www.rgees.com/documents/savENRG%20PCM%2022P.pdf">savEnrg™ PCM-HS22P</a> is a water based non-toxic, non-flammable, and economical material. It possess a density of 1.5 times that of water, thus occupies very little space within the shipping box but stores a large amount thermal energy in the range of 65 deg F to 80 deg F. Controlled Room Temperature shipping solutions designed with savEnrg™ Phase Change Material PCM-HS22P provide a longer temperature control with a lesser mass of coolant that not only reduces the weight of the shipper but also increases the payload capacity.<br />
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As the storage and packaging of wine boxes before shipping takes place in an environment that is around 65 degree F, the PCM-HS22P conditions itself into a solid form naturally and incorporated into the shipper directly. The solution provides a Net Zero Energy controlled room temperature wine shipper. <a href="http://www.rgees.com/about.php">RGEES, LLC </a>package the product in customized soft and hard packs to fit the individual needs of the shipping container.<br />
<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">RGEES, LLC is manufacturer of PCM based Cold Chain Refrigerants.</span><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;" /><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">More info: </span><a href="http://rgees.com/" style="background-color: white; color: #888888; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px; text-decoration: none;">http://rgees.com/</a><br />
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savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com3Asheville, NC, USA35.6009452 -82.55401535.4976602 -82.7119435 35.7042302 -82.39608650000001tag:blogger.com,1999:blog-3621198557589434342.post-15984928219291916822012-03-26T17:58:00.000-07:002016-01-07T10:00:21.446-08:00Unique PCM based technology to enhance efficiency of beverage coolers<div dir="ltr" style="text-align: left;" trbidi="on">
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<span style="text-align: left;">A consortium named <a href="http://www.icool.fp7.co/">iCool</a> has been organized in European Union to develop a unique technology that makes effective use of phase changes materials (PCM) within beverage coolers. The aim of this technology is to downsize the cooler's cooling system thereby significantly increasing it's energy efficiency. </span><br />
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The total EU stock of beverage coolers is currently estimated to 6.3 million, which is stated to be nearly 50% of the total number of commercial display refrigerators in use. It is now generally accepted that commercial refrigerators offer significant potential for energy savings. Compared to similar sized domestic refrigerators, the energy consumption of commercial beverage coolers can be over 3 times higher. It is understood that the cost and design of these commercial coolers are more important drivers that their energy efficiency. <br />
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The iCool Consortium is scheduled to deliver a Base Case Performance Model by November 2012 that will demonstrate the efficiency that the <a href="http://www.rgees.com/technology.php#what-is">phase-change technology</a> will provide and shall publish Field Test Reports by December 2013.<br />
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The Consortium comprises of seven organizations performing specialized functions to deliver the iCool Project Tasks:<br />
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<ol style="text-align: left;">
<li><b>New Wave Innovation</b> is a technology development and innovation company </li>
<li><b>Fricon</b> is a leading European manufacturer of a wide range of appliances including freezers, display coolers and wine coolers. </li>
<li><b>Saturn Engineering</b> is an electronic manufacturing service provider </li>
<li>The <b>AFM EUROP</b> display coolers are the perfect marketing tool to differentiate a product from competitors in the chilled area. </li>
<li><b>Re/gent</b> is an R&D centre and consultancy specialized in refrigeration, air conditioning and heat pumps, with an emphasis on energy efficiency and alternative refrigerants. </li>
<li>The <b>ZAE Bayern</b>, Bavarian Center for Applied Energy Research, is a non-profit research institute (SME) which cooperates with industry, universities and other research institutes. </li>
<li><b>Heineken N.V.</b> -established in 1864- is one of the world’s great brewers and is committed to growth and remaining independent. </li>
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The iCool Project Summary states that a recent working document for the implementation of the Ecodesign Directive outlines several legislative options that are to encourage and mandate significant energy efficiency improvements for beverage coolers. <br />
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">RGEES, LLC is manufacturer of PCM based Cold Chain Refrigerants.</span><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;" /><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">More info: </span><a href="http://rgees.com/" style="background-color: white; color: #888888; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px; text-decoration: none;">http://rgees.com/</a><br />
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savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com1tag:blogger.com,1999:blog-3621198557589434342.post-82661967090909561692012-02-15T19:37:00.000-08:002016-01-07T10:00:40.983-08:00Phase-changing materials in trial to preserve vaccines - SciDev.Net<div dir="ltr" style="text-align: left;" trbidi="on">
<a href="http://www.scidev.net/en/health/news/phase-changing-materials-in-trial-to-preserve-vaccines.html?utm_source=link&utm_medium=rss&utm_campaign=en_news#.Tzx6B7KSzkI.blogger">Phase-changing materials in trial to preserve vaccines - SciDev.Net</a><br />
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">RGEES, LLC is manufacturer of PCM based Cold Chain Refrigerants.</span><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;" /><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">More info: </span><a href="http://rgees.com/" style="background-color: white; color: #888888; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px; text-decoration: none;">http://rgees.com/</a></div>
savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-79495569519911705462012-01-03T05:31:00.000-08:002016-01-07T10:00:50.706-08:00Energy Storage in Commercial Buildings<div dir="ltr" style="text-align: left;" trbidi="on">
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<span style="font-family: inherit;">Commercial Buildings represent a large portion of total energy consumption. Property managers are actively seeking ways of better managing their energy costs through efficiency measures as well as innovative means of optimizing their expenditures under time of use (TOU) electricity rates and other variable pricing structures offered by utility companies.</span><br />
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<span style="font-family: inherit;">While uninterruptible power supplies (UPS) are currently the most common form of energy storage in commercial buildings, <a href="http://www.rgees.com/technology.php">thermal energy storage (TES) technologies</a> are capable of storing a comparable amount of energy. </span><br />
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<span style="font-family: inherit;">TES systems offer large storage capacity, to shift hours of cooling load in large buildings and campuses, from on-peak to off-peak periods. The wholesale cost to utilities for on-peak electricity is higher, compared to off-peak. Some regional regulations allow utilities to pass this cost difference to their commercial customers, with demand charges and/or TOU rates. </span><br />
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<span style="font-family: inherit;">TES systems with <a href="http://www.rgees.com/index.php">Phase Change Materials</a> are designed for both cool and hot energy storage. The application provides thousands of cycles per lifetime, multiple hours of duration per cycle, and a cost-effective price. </span><br />
<span style="font-family: inherit;">A customer can use an integrated energy storage system to manage their building energy cost. </span><br />
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">RGEES, LLC is manufacturer of PCM based Cold Chain Refrigerants.</span><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;" /><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">More info: </span><a href="http://rgees.com/" style="background-color: white; color: #888888; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px; text-decoration: none;">http://rgees.com/</a></div>
savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com1tag:blogger.com,1999:blog-3621198557589434342.post-85167822529019045522011-12-27T04:57:00.000-08:002011-12-27T04:57:00.444-08:00CSP with Thermal Storage increases Power Value<div dir="ltr" style="text-align: left;" trbidi="on">
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<span style="font-family: inherit;">Pike Reseach reported on Dec 20, 2011 that, an estimated 70% decline in solar PV prices, and an easier permitting regime due to solar PV’s modularity, has contributed to the impression that CSP had missed its window of opportunity, and would be left behind.</span><br />
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<span style="font-family: inherit;">A study by the National Renewable Energy Laboratory (NREL) found that when combined with <a href="http://www.rgees.com/technology.php#what-is">thermal energy storage</a> – currently the most cost-effective storage approach available – CSP offers a higher per kilowatt-hour (~1.6 cents) value over solar PV due to its capacity and reliability benefits. </span><br />
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<span style="font-family: inherit;">Bright Source Energy, a firm offer “Power Tower” CSP technology. The company has one of the largest pipelines of utility-scale solar technology projects, and it recently announced a deal with Southern California Edison (SCE) to integrate thermal energy storage into existing power purchase agreements that will increase revenues from power sales by as much as three times due to the better match with peak power needs. </span><br />
<span style="font-family: inherit;">The full report explains how</span><a href="http://www.pikeresearch.com/blog/brightsource-bucks-csp-trends" style="font-family: inherit;"> Bright Source Energy bucks CSP trend</a><span style="font-family: inherit;">s</span><span style="font-family: inherit;">. </span><br />
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</div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-85093533304035234012011-12-04T00:24:00.001-08:002016-01-07T10:01:10.881-08:00Passive building with PCM and tools for analysis<div dir="ltr" style="text-align: left;" trbidi="on">
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<span class="Apple-style-span" style="font-family: inherit;">Building energy consumption for it's temperature can be substantially reduced if solar energy is adequately utilized. Due to a strong need to reduce the total thermal energy requirement (both heating and cooling) in buildings, storage of thermal energy has gained prominence. The integration of phase change materials into building can provide a media to store the energy gain from solar radiation during the day and release the stored energy at night. </span><br />
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<span class="Apple-style-span" style="font-family: inherit;">Athienitis et al. (1997) performed an experimental analysis on a test-room with PCM and </span>found that peak room temperature was reduced by 4% and reduced the heating load at night. Darkwa and O’Callaghan (2006) studied drywalls with PCM at different phase change ranges during cooling season and found that the narrow phase-change rangeof PCM was most effective to reduce room temperature by 17%.<br />
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Therefore, the implementation of PCM's can reduce the energy requirement at peak hours and, can reduce the indoor temperature fluctuations to improve the thermal comfort of occupants.<br />
Department of Mechanical and Industrial Engineering, Ryerson University, Toronto, Canada has conducted work on<a href="http://www.bounceinteractive.com/bs2011/bs2011/pdf/P_1791.pdf"> comparison of corrective phase change material algorithm with ESP-R simulation</a>. This paper summarized the results of two different methods of analysing PCM for building energy use. One method is the commonly used apparent heat capacity method and the other is the iterative corrective scheme.<br />
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When the room temperature was outside the PCM temperature range (i.e. sensible heat), both the<br />
<span class="Apple-style-span" style="font-family: inherit;">corrective scheme and the ESP-r model gave similar results. However, within the phase change</span><br />
<span class="Apple-style-span" style="font-family: inherit;">temperature range there were differences depending on the Fourier and Biot number. In general, the ESP-r model gave the same results as the corrective scheme when the Fourier number was reduced below unity. Work is currently being pursued to implement the enthalpy method with iterative correction into the phase change module in ESP-r and TRNSYS. Also, experiments are currently being developed to validate these models.</span><br />
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">RGEES, LLC is manufacturer of PCM based Cold Chain Refrigerants.</span><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;" /><span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">More info: </span><a href="http://rgees.com/" style="background-color: white; color: #888888; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px; text-decoration: none;">http://rgees.com/</a><br />
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savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-12209960711598724882011-11-06T15:45:00.000-08:002011-11-06T15:45:31.992-08:00Molten Salt Thermal Energy Storage<div dir="ltr" style="text-align: left;" trbidi="on">
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In 2011, Changzhou Sunhome Solar Water Heater Manufacture Co., Ltd. established a solar thermal electrical power storage research & development center in Changzhou science city. The R&D team comprises of 20 members including one Professor, one Doctor, six graduates and twelve undergraduates. The test facilities covering 4000 sq.m consists of high temperature storage tank, large scale molten salt heat exchanger, transmission & control of molten salt. The molten salt storage was studied at a laboratory scale before raising the research facility with a 100ton high temperature molten salt storage tank.<br />
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<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-MY1ywwwJLgQ/Trca6_vs9tI/AAAAAAAAAZA/U1RCy3vfZ0E/s1600/Changzhou+CSP.jpg" imageanchor="1" style="clear: right; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" height="256" src="http://2.bp.blogspot.com/-MY1ywwwJLgQ/Trca6_vs9tI/AAAAAAAAAZA/U1RCy3vfZ0E/s320/Changzhou+CSP.jpg" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><a href="http://en.sunhome.cn/GeneralContentShow/compId=FrontNavigation_show-1401&&contentid=d6ac47a8-a285-41d1-ab40-d3d2a2177f5d&comp_stats=comp-FrontCommonContent_list-aboutus.html">Sunhome Changzhou City TES Research Facility</a></td></tr>
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<a href="http://en.sunhome.cn/GeneralContentShow/compId=FrontNavigation_show-1401&&contentid=8cb3501b-ebae-43c9-942f-3ebd7ac927e5&comp_stats=comp-FrontCommonContent_showTree-065816.html">Changzhou Sunhome Solar Water Heater Manufacture Co., Ltd</a> is a high-tech private enterprise which is specially engaged in the development, production and application of the solar energy products, incorporating scientific research.<br />
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Molten salts are <a href="http://www.rgees.com/index.php">phase change materials</a> that facilitate storage of thermal energy as latent heat while they change state from solid to liquid at a stable temperature. <a href="http://www.rgees.com/technology.php#what-is">Latent heat storage technology</a> is facilitating design of thermal energy storage systems from very low to to very high temperatures.<br />
</div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com2tag:blogger.com,1999:blog-3621198557589434342.post-28868833560316736982011-10-27T11:52:00.000-07:002011-12-15T19:00:38.308-08:00DOE presented opportunities to apply phase change materials<div dir="ltr" style="text-align: left;" trbidi="on">
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<span class="Apple-style-span" style="font-family: inherit;">Opportunities to Apply Phase Change Materials to Building Enclosures: November 11, 2011</span><br />
<span class="Apple-style-span" style="font-family: inherit;">This webinar, presented by research team Fraunhofer Center for Sustainable Energy Systems (CSE), reviewed basic physical characteristics and thermal properties of phase change materials (PCMs) and provided guidance on how to effectively apply PCMs in buildings in the United States. PCMs as building materials components have the potential to achieve significant reductions in space cooling energy consumption and peak cooling loads.</span><br />
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<span class="Apple-style-span"><a href="http://www.rgees.com/technology.php#what-is">Phase-change energy storage technology</a> is the science to store thermal energy as sensible heat and latent heat for efficient temperature control. This hybrid storage increases the thermal storage capacity within a small volume of storage and thermal energy can be stored at a temperature of process application. The temperature of the phase-change material remains constant during it's phase-change as it absorbs or releases thermal energy.</span><br />
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<span class="Apple-style-span"><b>Advantages of Phase-Change Energy Storage</b></span><br />
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<li><span class="Apple-style-span">Store thermal energy at the temperature of process application</span></li>
<li><span class="Apple-style-span">Store thermal energy as latent heat which allows higher thermal energy storage capacity per unit weight or material without any change in temperature</span></li>
<li><span class="Apple-style-span">Store thermal energy from thermal energy source or electrical energy source when available and use when needed</span></li>
<li><span class="Apple-style-span">Stored thermal energy is portable and rechargeable</span></li>
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<b>Economical & Environmental Benefits of PCM</b><br />
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<li><span class="Apple-style-span">Store natural thermal energy for facility heating and cooling needs. Reduced energy demand reduces facilities carbon footprint</span></li>
<li><span class="Apple-style-span">Store thermal energy during off demand hours and use during peak demand to save on energy cost and help stabilize grid load</span></li>
<li><span class="Apple-style-span">Shift of heating and cooling load also reduces peak time stress of heating and cooling equipment that can lead to reduced operating & maintenance cost.</span></li>
<li><span class="Apple-style-span">This technology would lead to sizing HVAC equipment for average load rather than peak load</span></li>
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<span class="Apple-style-span" style="background-color: black; color: white; font-family: inherit;"><span class="Apple-style-span" style="line-height: 17px;">View the </span><a href="http://apps1.eere.energy.gov/buildings/publications/pdfs/building_america/webinar_pcm_enclosures_20111111.pdf" style="border-bottom-width: 0px; border-color: initial; border-left-width: 0px; border-right-width: 0px; border-style: initial; border-top-width: 0px; line-height: 17px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; outline-color: initial; outline-style: initial; outline-width: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; vertical-align: baseline;">presentation slides<img alt="PDF" src="http://www1.eere.energy.gov/images/icon_pdf.gif" style="border-bottom-style: none; border-color: initial; border-color: initial; border-color: initial; border-left-style: none; border-right-style: none; border-style: initial; border-style: initial; border-top-style: none; border-width: initial; font-style: inherit; margin-bottom: 0px; margin-left: 4px; margin-right: 0px; margin-top: 0px; outline-color: initial; outline-style: initial; outline-width: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; vertical-align: text-top;" /></a><span class="Apple-style-span" style="line-height: 17px;"> and webinar recording (</span><a href="http://www1.eere.energy.gov/buildings/building_america/media/webinar_pcm_enclosures_20111111.wmv" style="border-bottom-width: 0px; border-color: initial; border-left-width: 0px; border-right-width: 0px; border-style: initial; border-top-width: 0px; line-height: 17px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; outline-color: initial; outline-style: initial; outline-width: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; vertical-align: baseline;">WMV 21 MB</a><span class="Apple-style-span" style="line-height: 17px;">).<span class="Apple-style-span" style="font-size: large;"> </span></span></span></div>
<br /></div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-74285956383226144602011-09-30T20:28:00.000-07:002011-09-30T20:28:19.642-07:00Phase Change Material Trombe Wall<div dir="ltr" style="text-align: left;" trbidi="on">
Appalachian State University's The Solar Homestead has taken the second place as on September 30th, 2011 in the Solar Decathlon 2011's communications content!! The Solar Homestead features a phase change material based Trombe Wall.<br />
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The simple design comprises of a battery of flat panels constructed in aluminum filled with phase change material. The wall is located on the south side of the house, few inches behind the glass window. Each flat panel can be manually flipped to any angle to absorb the heat during the winter day and still have the capability to get sunlight and see through the window. The absorbed heat is released during the night to warm the inside space.<br />
During the day the sun heats first the air in the space between the panel and glass, then the PCM inside the panel absorbs heat and changes from solid to liquid. The heat is stored as latent heat. Once the air in the space is heated it rises and enters into the room. The upward air movement pulls the cool air from the room and the Trombe Wall heats it. The cycle continues as a natural phenomenon. The PCM inside the Trombe Wall increases the capability of the Trombe Wall to absorb heat with a light construction and release/absorption of heat takes place at a constant temperature. <a href="http://www.rgees.com/technology.php">The Phase Change Energy storage technology</a> is promising technology towards energy saving through energy storage and provides a sustainable method for temperature control.<br />
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<a href="http://4.bp.blogspot.com/-wA-JihtUB-A/ToaAALLJjAI/AAAAAAAAAY0/lgUMNNYdiQM/s1600/P9220366.JPG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="150" src="http://4.bp.blogspot.com/-wA-JihtUB-A/ToaAALLJjAI/AAAAAAAAAY0/lgUMNNYdiQM/s200/P9220366.JPG" width="200" /></a>The Solar Homestead is designed with a slide door on the outside of the glass window that is closed during summer to avoid unwanted heat gain.<br />
<a href="http://thesolarhomestead.blogspot.com/">The Solar Homestead</a> is Appalachian State University's entry in the U.S. Department of Energy Solar Decathlon 2011. Inspired by the pioneer spirit of the early settlers in the mountain region of North Carolina, they have designed a self-sustaining zero energy home.<br />
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savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-2282893024211620052011-09-14T20:26:00.000-07:002011-09-14T20:26:51.057-07:00New Phase Change Material (PCM) Evaporator by Delphi<div dir="ltr" style="text-align: left;" trbidi="on">A Frankfurt press release on September 14, 2011 reported on a new phase change material based evaporator for hybrid vehicles that provides efficient, affordable air conditioning even when the car engine is off. The release stated that Delphi Automotive is developing an air conditioning technology that saves energy without compromising cabin comfort. The product incorporates a Phase Change Material (PCM) in the Evaporator that is expected to keep the cabin of start-stop vehicles cooler longer. The new evaporator is expected to be a direct replacement for the original air-conditioning evaporator. It will lower the cost, will be less complex than an electric air conditioning compressor and is more efficient.<br />
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<span class="Apple-style-span" style="font-family: inherit;">Delphi's system integrates a reservoir of PCM within the air-conditioning evaporator. During normal operation, PCM reservoir is kept cool such that the PCM material is maintained in a frozen state. When the air conditioning system is stopped, the PCM gradually liquefies or melts, drawing heat from the air to keep passengers cool and comfortable. The system can typically maintain target air temperature at the cabin vents for one to two minutes based upon the quantity of PCM in the reservoir. The system keeps the occupants comfortable throughout periods of stop-start driving while conserve fuel. </span><br />
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<span class="Apple-style-span" style="font-family: inherit;">As per the release, Delphi technologies can reduce HVAC system fuel usage by 50 percent.The technology is now moving from testing to its first vehicle development program and is expected on the road by 2014.</span><br />
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</div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com2tag:blogger.com,1999:blog-3621198557589434342.post-9746116209138059802011-08-22T18:11:00.000-07:002011-08-24T14:48:06.995-07:00Team enCORE installs savEnrg™ PCM Plenum to store heat generated from the solar thermal hot air collectors<div dir="ltr" style="text-align: left;" trbidi="on"><br />
<span class="Apple-style-span" style="font-family: inherit;"><a href="http://solardecathlon.osu.edu/blog/engineering-spotlight-phase-change-material-thermal-storage-system">enCORE</a> from OSU will exhibit at </span><a href="http://www.solardecathlon.gov/">Solar Decathlon 2011</a>a unique ability to store heat generated from the solar thermal hot air collectors for extended periods of time. The structures uses a thermal battery which stores 30 hours of hot air at 86 degrees F. The thermal battery is designed using <b>savEnrg™ Phase Change Material (<a href="http://www.rgees.com/product_PCM29P.php">PCM-29P</a>) panels</b>. <a href="http://www.rgees.com/products.php">savEnrg™ Phase Change Materials (PCM)</a> are inorganic salt hydrates with negligible super cooling and sharp phase temperatures that have a capacity to store large amounts of energy as latent heat during their process of phase change. Phase Change Materials are non-toxic, non-combustible and made out of 100% natural, eco-friendly products.<br />
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<span class="Apple-style-span" style="font-family: inherit;">Engineering Spotlight from the enCORE OSU Solar Decathlon 2011 team commented that, "<a href="http://www.rgees.com/technology.php">Phase change materials</a> may sound exotic, but in fact we encounter them on a nearly daily basis. The next time you are enjoying a cold drink take some time to consider the functionality of the ice in it. As the ice melts (changes phase) it acts as to maintain the drink at approximately 32 degrees F. The functionality of the phase change material in enCORE is much the same except for one key difference, <b>it changes states at 86 degrees F</b>! "</span><br />
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<tr><td style="text-align: center;"><a href="http://3.bp.blogspot.com/-KzgJApeXheA/TlL41Wrgm6I/AAAAAAAAAYg/rf2HfAZPb0E/s1600/enCORE+PCM2.PNG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="245" src="http://3.bp.blogspot.com/-KzgJApeXheA/TlL41Wrgm6I/AAAAAAAAAYg/rf2HfAZPb0E/s320/enCORE+PCM2.PNG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">A rendering of the plenum (source <a href="http://solardecathlon.osu.edu/blog/engineering-spotlight-phase-change-material-thermal-storage-system">enCORE</a>)</td></tr>
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<span class="Apple-style-span" style="font-family: inherit;">The team engineers further stated that 86 degree F is the same temperature which we wish to deliver heating supply air to the house. Having such a material allows the control system to open a series of dampers which send a stream of air heated using our collection system to the plenum. This air melts the phase change material which is now storing energy for later use. The thermal energy is stored as a combination of sensible heat and latent heat providing the a <b>total heat storage capacity of over 190KJ/kg</b>. </span><br />
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<span class="Apple-style-span" style="font-family: inherit;"><b>Why is this so useful?</b> The <a href="http://vimeo.com/27607503">OSU team engineers explain in they project blog</a> - Consider a fall day, it is a pleasant 65 degrees outside at 4 PM, however, the weather forecast calls for a 45 degree night. Clearly the house may demand no space heating or cooling during the day but will almost certainly need some heating overnight. The built in intelligence of the control system in enCORE will react to these parameters by examining national weather service data and pre-charge the phase change material for use overnight.</span><br />
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<tr><td style="text-align: center;"><a href="http://3.bp.blogspot.com/-pMQDe-WonQM/TlL40c05rDI/AAAAAAAAAYc/CrCamB2jeUw/s1600/enCORE+PCM.PNG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="344" src="http://3.bp.blogspot.com/-pMQDe-WonQM/TlL40c05rDI/AAAAAAAAAYc/CrCamB2jeUw/s640/enCORE+PCM.PNG" width="640" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Team enCORE installing savEnrg™ PCM Panels (source <a href="http://solardecathlon.osu.edu/blog/engineering-spotlight-phase-change-material-thermal-storage-system">enCORE</a>)</td></tr>
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</span></div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-55610266742881538862011-08-14T10:38:00.000-07:002011-08-14T10:39:16.688-07:00Reseachers at UNNC develop new PCM<div dir="ltr" style="text-align: left;" trbidi="on"><span class="Apple-style-span" style="background-color: white; color: #333333; font-family: Arial, Helvetica, sans-serif; font-size: x-small;"></span><br />
<h1 style="margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"></h1><h1 style="margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"></h1><h1 style="margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"></h1><h1 style="margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"></h1><h1 style="margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span class="Apple-style-span" style="font-weight: normal;"><span class="Apple-style-span" style="font-family: inherit; font-size: small;">Researchers at the University of Nottingham Ningbo China ( UNNC) have developed a new PCM for room climate control that could be applied on wallpaper. This phase change material (PCM) retains and releases heat according to the specific temperature requirements for a building. The researchers claim large thermal energy storage capacity with fast thermal transfer properties than existing materials.</span></span></h1><div><span class="Apple-style-span" style="font-weight: normal;"><span class="Apple-style-span" style="font-family: inherit; font-size: small;"></span></span><br />
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</span></span></div><h1 style="margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span class="Apple-style-span" style="font-weight: normal;"><span class="Apple-style-span" style="font-family: inherit; font-size: small;">The material using a technique where phase change material of appropriate temperature are micro-encapsulated. The product is then used in a form to be applied as a coating on surfaces. The material adds thermal mass to the room and is designed to <a href="http://www.rgees.com/technology.php">store thermal energy as latent heat</a>. Latent heat is the thermal energy that is stored or released when a product changes state. The material within the microcapsules freeze at temperatures below it's phase change point and liquefy when the temperature rises. The product does not eliminate the need for insulation or air-conditioning but reduces the heat loss and reduces the load on air-conditioning during peak demand hours.</span></span></h1><div><span class="Apple-style-span" style="font-weight: normal;"><span class="Apple-style-span" style="font-family: inherit; font-size: small;"><br />
</span></span></div><h1 style="margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span class="Apple-style-span" style="font-weight: normal;"><span class="Apple-style-span" style="font-family: inherit; font-size: small;">The university is said to already has a number of sponsors and partners involved in the research, including the Ningbo Science and Technology Bureau, which supported the initial two-year research, and private companies based in China. </span></span></h1><div><span class="Apple-style-span" style="font-weight: normal;"><span class="Apple-style-span" style="font-family: inherit; font-size: small;"><br />
</span></span></div><h1 style="margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span class="Apple-style-span" style="font-weight: normal;"><span class="Apple-style-span" style="font-family: inherit; font-size: small;">UNNC is looking at further research to determine long-term environmental impacts of the use of the materials, determine ways to improve the production of the material to enhance cost efficiency and ensure the process is environmentally friendly, explore which types of paints can be used with the material. </span></span></h1><div style="font-size: medium; font-weight: normal;"><br />
</div></div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-36935222803563356012011-07-23T12:58:00.000-07:002011-07-23T12:58:52.349-07:00Recent development of PCM based thermal energy storage (TES) materials at the Air Force Research Laboratory<div dir="ltr" style="text-align: left;" trbidi="on"><span class="Apple-style-span" style="font-family: inherit;">A news article today talked about a paper being published highlighting a unique application for inorganic hydrated salt PCM. Regenerative thermal energy storage materials like hydrous salts are being highlighted for applications in thermal management of on-flight equipment like lasers and microwaves. </span><br />
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<span class="Apple-style-span" style="font-family: inherit;">High power lasers and microwaves generate large quantities of low quality waste heat, creating difficult thermal management challenges. These challenges are compounded by the efforts to place these systems on both large and small aircraft. Traditional approaches to thermal management are not suitable for these platforms, as they require unacceptable weight and volume devoted to the thermal management system, and as they rapidly exhaust a platforms thermal capacity. </span><br />
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<span class="Apple-style-span" style="font-family: inherit;">The publication is stated to describe a recent development of phase change-based thermal energy storage (TES) materials at the Air Force Research Laboratory. This paper is informed to focus on hydrous salt composites as a promising class of passive TES materials able to regenerate (re-solidify) mid-flight. It is stated that hydrous salts offer significantly higher volumetric and specific energy densities (up to ~0.3 MJ/kg, ~0.4 MJ/m^3) than state of the art paraffin TES materials, as well as higher thermal conductivity (~0.5-0.6 W/m/K). Despite these advantages, hydrous salts have typically not gained much interest due to problems with chemical segregation (changing solidification and melting behavior over large numbers of cycles), under-cooling, and material incompatibilities. The paper is noted to discuss recent progress towards solutions to these challenges, permitting high energy density regenerative TES materials. </span><br />
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<tr><td style="text-align: justify;"><span id="title" style="font-family: inherit;">Government of India Press Information Bureau announced the inauguration of the world's highest efficiency solar thermal cooling system. It stated that " India achieves major breakthrough in solar thermal cooling system technology". The system was inaugurated at the Solar Energy Center in Guragon, Haryana, India by Dr. Farooq Abdullah, The minister of New & Renewable Energy on July 1, 2011. </span><br />
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<tr><td style="height: 600px; text-align: justify; vertical-align: top;"><span class="Apple-style-span" style="font-family: inherit;">The system was described to be a 100kw solar power based air-conditioning system. The efficiency of the system is expected to be 30% higher than other current available systems. The system features high efficiency medium temperature parabolic troughs for collection of solar energy and <a href="http://www.rgees.com/technology.php">phase change material</a> based solar thermal energy storage. The unique technology is based on the new triple effect absorption cooling technology.</span><br />
<span class="Apple-style-span" style="font-family: inherit;">As per the press release, the solar thermal cooling system has been developed in joint collaboration by Solar Energy Centre with M/s Thermax Limited, Pune. </span><br />
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<span class="Apple-style-span" style="font-family: inherit;"><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;">The Phase Change Material </span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;">PCM OM11P</span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;"> </span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;">was used </span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;">to store cold energy</span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;"> for the Solar Thermal Cooling System installed at the Solar Energy Centre, Gurgaon. This PCM </span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;">product has been developed by <a href="http://www.thermalenergystorage.in/">Pluss Polymers Pvt. Ltd, India</a></span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;">. </span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-size-adjust: none; line-height: 15px;"> <span id="yui-gen11" style="-webkit-text-size-adjust: none; border-bottom-width: 0px; border-color: initial; border-left-width: 0px; border-right-width: 0px; border-style: initial; border-top-width: 0px; font-style: inherit; font-weight: inherit; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; outline-color: initial; outline-style: initial; outline-width: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; vertical-align: baseline;">PCM OM11P is an organic phase change material with latent heat storage capacity of 260 KJ/Kg. The phase change temperature is engineered to change phase at +11C. </span></span></span><br />
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<div class="separator" style="clear: both; text-align: center;"><a href="http://1.bp.blogspot.com/-DDeyNAZgHck/Thx2JUD4-II/AAAAAAAAAYY/-R48NS4qsWY/s1600/sec-guest.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="240" src="http://1.bp.blogspot.com/-DDeyNAZgHck/Thx2JUD4-II/AAAAAAAAAYY/-R48NS4qsWY/s320/sec-guest.jpg" width="320" /></a></div><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px;"><span class="Apple-style-span" style="font-family: inherit;">The campus of the Solar Energy Centre for its R&D activities is located at the 19<sup>th</sup> milestone on the Gurgaon-Faridabad road. The surrounding area is predominantly agricultural. The main approach to the Campus passes through the Arawalis, which are considered to be the oldest mountain range in India. The campus c</span></span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px;">overs an area of about 81 hectares</span><span class="Apple-style-span" style="-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px;"> that receives abundant sunshine. The buildings of the Solar Energy Center have been constructed using various solar passive techniques to achieve energy efficiency and environmental friendliness.</span><br />
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The hot air is lighter than cold air and has lesser oxygen to contribute to the combustion process of the turbine. So, when the summer temperatures rise, gas turbines lose efficiency and power. This results in significant reduction of the electrical output of the turbine. Generally during the summer, the power demand is at its peak and due to hot weather, the output of turbines is reduced and the power producers experience a reduction in performance. <b>Turbine Inlet Chilling</b> (TIC) is considered to be a cost effective solution to this problem.<br />
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<span class="Apple-style-span" style="font-family: inherit;">Traditionally, this problem has been solved by building more power plants and/or power plants with standby generation capacities. Turbine Inlet Chilling Association (TICA) promotes the development and exchange of knowledge related to gas turbine inlet cooling (TIC) for enhancing power generation worldwide. Turbine inlet cooling provides a cost-effective, energy-efficient, and environmentally beneficial means to enhance power generation capacity and efficiency. </span><br />
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<tr><td class="tr-caption" style="text-align: center;"><span class="Apple-style-span" style="font-family: inherit;">Typical CT System (source<span class="Apple-style-span" style="font-size: small;"> </span><span class="Apple-style-span" style="font-size: x-small;">TCIA</span><span class="Apple-style-span" style="font-size: small;">)</span> </span></td></tr>
</tbody></table><span class="Apple-style-span" style="font-family: inherit;">TIC is cooling of the ambient air before it enters the compressor that supplies high-pressure air to the combustion chamber from which hot air at high pressure enters the combustion turbine.</span><br />
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<b><span class="Apple-style-span" style="font-family: inherit;">Why Cool Turbine Inlet Air?</span></b><br />
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<tr><td style="text-align: center;"><a href="http://4.bp.blogspot.com/-hUAaDOgnUtk/TgpmEnREvjI/AAAAAAAAAXw/c0_tneJkNYQ/s1600/fig2.gif" imageanchor="1" style="clear: right; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><span class="Apple-style-span" style="font-family: inherit;"><img border="0" height="209" src="http://4.bp.blogspot.com/-hUAaDOgnUtk/TgpmEnREvjI/AAAAAAAAAXw/c0_tneJkNYQ/s320/fig2.gif" width="320" /></span></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span class="Apple-style-span" style="font-family: inherit;">Effect of ambient temperature on output of CT (source TCIA)</span></td></tr>
</tbody></table><span class="Apple-style-span" style="font-family: inherit;">The primary reason turbine inlet air is cooled is to reduce or prevent the often significant loss of power output, compared to the rated capacity, of combustion turbines (CT) when ambient air temperature is high. As per <a href="http://www.turbineinletcooling.org/intro.html">TICA</a>, by cooling the inlet air from 100 degree F to 59 degree F, we could prevent the loss of 27% of the rated generation capacity. In fact, if we cool the inlet air to about 42 degree F, we could enhance the power generation capacity of the CT to 110% of the rated capacity. </span><br />
<span class="Apple-style-span" style="font-family: inherit;">TIC allows an increase in air density by lowering the temperature, and thus, helps increase the mass flow rate of air to the CT and results in increased output of the CT.</span><br />
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<b><span class="Apple-style-span" style="font-family: inherit;">TECHNOLOGIES for TIC</span></b><br />
<span class="Apple-style-span" style="font-family: inherit;">Many technologies are commercially available for TIC. These technologies can be divided into the following major categories/groups:</span><br />
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<ul style="text-align: left;"><li>Evaporation<span class="Apple-style-span" style="font-family: inherit;">: wetted media, fogging, and wet compression</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Chillers: mechanical and absorption chillers without or with thermal energy storage (TES)</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">LNG Vaporization</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Hybrid Systems: combinations of several technologies</span></li>
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<span class="Apple-style-span" style="font-family: inherit;"><b>Mechanical Chiller systems</b> can cool the inlet air to lower than wet bulb temperature and when properly designed can maintain any desired inlet air temperature down to as low as 42 degree F, independent of ambient wet-bulb temperature. The chilled water can be supplied directly from a chiller or from a TES (Thermal Energy Storage) tank that stores ice, or chilled fluid. </span><br />
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<span class="Apple-style-span" style="font-family: inherit;"><b>Absorption Cooling systems</b> are similar to the mechanical refrigeration systems except that instead of using mechanical chillers, these systems use absorption chillers that require thermal energy (steam or hot water) as the primary source of energy and require much less electric energy than the mechanical chillers. Absorption cooling systems can be used to cool the inlet air to about 50degree F. These systems can be employed with or without chilled water TES systems.</span><br />
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<span class="Apple-style-span" style="font-family: inherit;"><a href="http://www.rgees.com/solutions_thermal-energy-storage.php">Thermal Energy Storage (TES)</a> can reduce overall capital costs because it reduces the chiller capacity requirements as compared to the capacity required to match the instantaneous on peak demand for cooling. Since the chillers in TES systems are operated during the off-peak period using low-cost electricity for charging the TES tank and have it stored for use the following day during peak demand. Such a system increases the net power capacity during the on-peak period. With a Thermal Energy Storage tank, operators can pull electricity from the grid at night-time hours (and pricing) to chill the water </span><br />
<span class="Apple-style-span" style="font-family: inherit;">Thermal Energy Storage (TES) designed with <a href="http://www.rgees.com/products.php">Phase-change materials</a> like PCM08P and PCM11P can further enhance the efficiency of chilled water storage as PCM08P can be charged by the output of mechnical chillers (42 degree F/ 5.5 degree C) and PCM11P can be charged by the output of absorption chillers (50 degree F/ 10 degree C). Incorporation of <a href="http://www.rgees.com/technology.php">phase change materials in TES</a> increases it's total energy storage capacity and provides better temperature control of the storage tank.</span><br />
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<b><span class="Apple-style-span" style="font-family: inherit;">Benefits of TIC with TES</span></b><br />
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<ul style="text-align: left;"><li><span class="Apple-style-span" style="font-family: inherit;">Increased net power capacity during the on-peak period</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Stabilized chiller load during on-peak and off-peak period</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Increased power output</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Reduced capital cost ($/kW) per unit of power plant output capacity</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Increased fuel efficiency</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Increased steam output </span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Increased power output of steam turbines in combined-cycle systems</span></li>
<li><span class="Apple-style-span" style="font-family: inherit;">Improved predictability of power output by eliminating the weather variable.</span></li>
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</div></div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com4Asheville, NC, USA35.6009452 -82.55401499999999335.4835782 -82.6594825 35.7183122 -82.448547499999989tag:blogger.com,1999:blog-3621198557589434342.post-1352537778635246782011-06-14T05:00:00.000-07:002011-07-01T08:03:18.470-07:00Phase Change Material for Marine Holdover Plates<div dir="ltr" style="text-align: left;" trbidi="on"><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;">Holdover plates, as defined by the <a href="http://www.rparts.com/index.php?cPath=13_20&osCsid=gi8gf8gr8t4pfqqu7f4lfbrqu0">Refrigeration Parts Solution</a>, are stainless steel tanks which contain an evaporator coil surrounded by a </span><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;">Phase Change Material<b> </b></span><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;">called </span><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;">propylene glycol</span><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;"> . As the compressor runs, this solution freezes. Once the compressor turns off, the frozen solution continues to absorb heat from the refrigerated box thereby extending the "off" cycle of the compressor. When incorporated into a properly designed system, holdover plates can significantly reduce average energy consumption.</span><br />
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<tr><td class="tr-caption" style="text-align: center;"><a href="http://www.myboatsgear.com/newsletter/200915b.asp"><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif; font-size: small;">Holdover Plate by myboatsgear</span></a></td></tr>
</tbody></table><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;">Marine Holdover Plates also known as Marine Refrigerator Holding Plates act like large blocks of ice and can maintain cold for long periods for refrigerators and freezers. These hold over plates are made out of Stainless Steel and Copper Tubing. Non-Toxic propylene glycol in different concentrations is used as a liquid to store the energy. </span><br />
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<span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;"><span class="Apple-style-span" style="line-height: 19px;"><a href="http://en.wikipedia.org/wiki/Propylene_glycol">Wikipedia notes the environmental safety for Propylene glycol</a>. It is known to exert high levels of biochemical oxygen demand (BOD) during degradation in surface waters. This process can adversely affect aquatic life by consuming oxygen aquatic organisms need to survive. Large quantities of dissolved oxygen (DO) in the water column are consumed when microbial populations decompose propylene glycol. </span><span class="Apple-style-span" style="line-height: 19px;">Sufficient DO levels in surface waters are critical for the survival of fish, macro invertebrates, and other aquatic organisms. </span></span><br />
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<span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;"><span class="Apple-style-span" style="line-height: 19px;">Phase Change Material like </span></span><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;"><strong>savEnrg™ </strong><a href="http://www.rgees.com/product_PCM23N.php" style="color: #528ce0; text-decoration: none;">PCM23N</a> </span><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;"><span class="Apple-style-span" style="line-height: 19px;">can be an environmentally safe and economical replacement for 40% </span></span><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif; line-height: 19px;">Propylene glycol solution</span><span class="Apple-style-span" style="font-family: Georgia, 'Times New Roman', serif;"><span class="Apple-style-span" style="line-height: 19px;"> . PCM23N is an inorganic salt hydrate that is safe for the environment, non toxic and non flammable. The product is compatible with stainless steel, copper and high density polyethylene however, corrosive to aluminum. This product features a melting point of -</span>22°C and freezing point of - 23°C. PCM23N has a latent heat storage capacity of 200 kJ/Kg and sensible heat storage of 0.83 kcal/kg.k. It's solid density is 1120 Kg/m3 and a liquid density of 1180 Kg/m3 featuring a low volumetric expansion during phase change. The product is recommended to be used for the freezer application and provides very effective temperature control for long duration's. </span><br />
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</b></span></div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com0tag:blogger.com,1999:blog-3621198557589434342.post-25168725661330337942011-06-07T05:00:00.000-07:002016-01-07T10:03:42.212-08:00Phase Change Material as a safe substitute for Dry ice<div dir="ltr" style="text-align: left;" trbidi="on">
<span class="Apple-style-span" style="font-family: inherit;">Dry ice is generally used as a refrigerant for packaging and transporting food, pharmaceutical products and biological samples that are needed to be kept frozen. Dry ice is generally considered non toxic with an enthalpy of sublimation equal to 57 1 kJ/Kg which makes it a very effective coolant. Dry ice however is very dangerous if not handled with care. It's sublimation produces carbon dioxide vapors which is harmful in high concentrations and directly enhances carbon emissions. Direct contact with dry ice can freeze cells and give effects similar to burns. </span><span class="Apple-style-span" style="font-size: 14px;">Phase Change Materials like PCM23N provide an advantage over using dry ice. </span><br />
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<span class="Apple-style-span" style="font-family: inherit;">Inorganic phase change materials like PCM23N provide a safe renewable material which changes phase between solid-liquid and assures a temperature control in the range of </span><span class="Apple-style-span" style="font-size: 14px;">-25°C to </span><span class="Apple-style-span" style="font-size: 14px;">-15°C. </span><span class="Apple-style-span" style="font-size: 14px;">Products like <a href="http://www.rgees.com/product_PCM23N.php">Phase Change Material PCM23N</a> are intended to store & transport products at temperatures below -15°C as an alternative to Dry-Ice. Inorganic salt hydrates are non hazardous, non toxic, non flammable, reusable with stability of 1000s of cycles.. </span><br />
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<a href="http://3.bp.blogspot.com/-5K1t4o0mnug/Vo6oc7D7eZI/AAAAAAAAAxU/1ck-M1Q3XV8/s1600/Freezer%2B0.7%2BL.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="213" src="http://3.bp.blogspot.com/-5K1t4o0mnug/Vo6oc7D7eZI/AAAAAAAAAxU/1ck-M1Q3XV8/s320/Freezer%2B0.7%2BL.jpg" width="320" /></a></div>
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<span class="Apple-style-span" style="font-size: 14px;"><span class="Apple-style-span" style="font-family: inherit;"><a href="http://www.rgees.com/products_ice-pack.php">P</a>hase Change Materials provide an advantage over using dry ice for applications where a temperature control of below <span class="Apple-style-span" style="font-size: small;"> <span class="Apple-style-span" style="font-size: 14px;">-15°C is needed. Handling is comparatively safer as the ice pack is not as cold as </span></span><span class="Apple-style-span" style="font-size: small;"> <span class="Apple-style-span" style="font-size: 14px;">-80°C (dry ice), the coolant changes phase between solid to liquid and is contained in a rigid bottles which makes them reusable. Phase Change Materials like PCM23N have been tested to remain stable for 3000 cycles, it requires much lesser energy to freeze these ice packs as compared to the energy required to freeze CO2 and finally, during use, </span></span><a href="http://www.rgees.com/products_ice-pack.php">Phase Change Material based Ice-Packs</a> do not release any harmful gases. The insulated shippers can be sealed airtight with no need of additional ventilation and can be shipped by air as a safe products. </span></span></div>
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<span class="Apple-style-span" style="font-size: 14px;">Molded EPS Insulated shippers with 2" wall thickness are generally used for shipping frozen products with dry ice as coolant. As these boxes cannot be sealed air tight for the fear of explosion, the heat gain increases and the sublimation of dry ice is quick. The air gaps make it difficult to calculate the heat gain of the insulated shipped and generally the quantity of dry ice used is more than required. This makes the shipper heavier, increases the shipping weight and the shipping cost, products that need to be in the range of -20°C to -15°C could be exposed to much lower temperatures and a wider a range -80°C to -10°C. </span></div>
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<span class="Apple-style-span" style="font-size: 14px;">We tested a small 1.5" molded shipper 12" x 9" x 9" to keep the temperature below -15°C for 24Hrs if exposed to ISTA 7D winter and summer profiles. Knowing the ISTA 7D profiles we were able to estimate the heat gain within the box for both situations and calculate the number of <a href="http://www.rgees.com/products_ice-pack.php">savEnrg™ Ice-Packs</a> required to sink this heat while maintaining the temperature. The pack-out performed as per requirement in the very first attempt as the calculation and performance were precise. </span></div>
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<a href="http://4.bp.blogspot.com/-CF_s-1zoXJQ/TeqlHYz6KyI/AAAAAAAAAXQ/E2ziOwMk0Zk/s1600/PCM23NinSL10for24HrSummer.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="196" src="http://4.bp.blogspot.com/-CF_s-1zoXJQ/TeqlHYz6KyI/AAAAAAAAAXQ/E2ziOwMk0Zk/s320/PCM23NinSL10for24HrSummer.png" width="320" /></a></div>
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<span class="Apple-style-span" style="font-size: 14px;"><b>Test results for 24Hr Summer profiles: </b></span></div>
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<span class="Apple-style-span" style="font-size: 14px;">The test profile is depicted in blue and the temperature within the insulated shipper is depicted in orange. The ice pack was frozen for 24hr at </span><span class="Apple-style-span" style="font-size: 14px;">-30°C. Eight packs with a total weight of 4.5Kg of coolant can be seen to start changing phase at </span><span class="Apple-style-span" style="font-size: 14px;">-20°C and this temperature remains stable even during the spikes in ambient temperature profile of 24hrs. </span></div>
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<span class="Apple-style-span" style="font-size: 14px;">The test profile is depicted in blue and the temperature within the insulated shipper is depicted in orange. The ice pack was frozen for 24hr at </span><span class="Apple-style-span" style="font-size: 14px;">-30°C. Four packs with a total weight of 2.2Kg of coolant can be seen to start changing phase at </span><span class="Apple-style-span" style="font-size: 14px;">-20°C and this temperature remains stable even during the spikes in ambient temperature profile of 24hrs. </span></div>
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<span class="Apple-style-span" style="font-size: 14px;">The performance was found very predictable and mathematical simulations for any insulated shipper can be executed to <a href="http://www.rgees.com/ccr-pack-calculator.php">estimate the quantity of cooling material</a> required prior to using laboratory time. The rigid bottles </span><span class="Apple-style-span"><span class="Apple-style-span" style="font-size: 14px;">are easy to handle and can be strategically positioned within the shipper for uniform temperature distribution. Some parts of the shipper can experience higher heat or cold stress as compared to other parts, knowing this, the bottles can be easily positioned </span></span></div>
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<span class="Apple-style-span" style="font-size: 14px;">Phase Change Material based Ice-Packs give the advantage to save energy while freezing and reusing. During transportation there is no release of carbon dioxide and no danger of the any explosions due to pressure. </span></div>
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savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com1tag:blogger.com,1999:blog-3621198557589434342.post-6531851339237432842011-05-02T06:00:00.000-07:002016-01-07T10:04:41.663-08:00Free Cooling with PCM22P<div dir="ltr" style="text-align: left;" trbidi="on">
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savEnrg PCM22P is an inorganic salt hydrate which freezes at temperatures below +16 degree C and melts at temperatures above +27 degree C. It's latent heat storage capacity is 185KJ/Kg and is tested for 3000 cycles. About 20Kg of this material is needed to store 1KW of thermal energy.<br />
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The product is ideal to maintain a comfortable room temperature of around 25 degree C in summer. The application in the figure below considers a situation when the night time temperature drops below 16 degree C. Cool air is directed through the PCM22P storage, the PCM releases the heat stored from the day period and subsequently freezes. During the day cycle as the temperature within the facility rise above 25 degree C, the warm air is directed through the PCM storage. The storage acts as a heat sink and starts absorbing the warmth in the air and in turn cools it. The air cooling cycle continues till the PCM is completely liquid. During this period the facility maintains a temperature of 25 degree C.<br />
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The product can be used for free cooling of facilities like construction trailers, instrumentation shelters, green houses, telecommunication shelters etc.<br />
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<tr><td class="tr-caption" style="text-align: center;">Free Cooling Thermal Battery with savEnrg PCM22P</td></tr>
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Quantity of <a href="http://www.rgees.com/product_PCM22P.php">PCM22P</a> required for Free Cooling is calculated based on the estimation of facilities heat gain during the day, day time temperature profile and night time temperature profile. PCM quantity needs to be sized such that adequate night time low temperature is available to charge the PCM.<br />
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<span style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px;">More info: </span><a href="http://rgees.com/" style="background-color: white; color: #888888; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 13.2px; line-height: 18.48px; text-decoration: none;">http://rgees.com/</a><br />
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savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com3tag:blogger.com,1999:blog-3621198557589434342.post-54975572671768667922011-04-29T12:14:00.000-07:002011-07-04T09:59:34.493-07:00Frequently asked questions about Phase Change Material<div dir="ltr" style="text-align: left;" trbidi="on"><br />
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<div style="background-color: transparent;"><span id="internal-source-marker_0.1875266160350293" style="background-color: transparent; color: navy; font-family: Arial; font-size: 13pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> </span><span class="Apple-style-span" style="color: white; font-family: Georgia, 'Times New Roman', serif;"><span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">1. How is PCM manufactured?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> PCMs are manufactured by mixing various chemicals in particular proportions under appropriate environment conditions. </span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">2. <span class="Apple-tab-span" style="white-space: pre;"> </span>What is the PCM made out of ?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> PCMs are made from either inorganic chemicals or organic chemicals </span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">3. <span class="Apple-tab-span" style="white-space: pre;"> </span>What is the form that is it made in? (encapsulated beads, strips, foam, panels)?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> PCMs are liquids above their melting point and solids below that. These are encapsulated in different materials such as - HDPE, PP, Multilayer (Nylon /Aluminium) and Stainless Steel containers</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Depending on the compatibility characteristics and service temperature we recommend suitable encapsulation material</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> </span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">4. <span class="Apple-tab-span" style="white-space: pre;"> </span>How do you manipulate the phase change temperature?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> By adding different chemicals or altering the proportions of it</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">5. <span class="Apple-tab-span" style="white-space: pre;"> </span>What are the material properties? (latent heat, head capacitance, thermal conductivity, density, etc)</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Material Latent Heat, Density, Specific Heat in liquid and solid state, thermal conductivity in liquid and solid state, toxicity, flammability, operating temperature range and maximum operating temperature would be the specifications.</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">6. <span class="Apple-tab-span" style="white-space: pre;"> </span>Does the density or volume change during the phase change?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Yes - depends on the base material (Organic or hydrated salts) they expand or contract while changing its phase</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">7. <span class="Apple-tab-span" style="white-space: pre;"> </span>Is there a maximum pressure the encapsulated PCM can withstand?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> This will depend on the kind of encapsulation.</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> </span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">8. <span class="Apple-tab-span" style="white-space: pre;"> </span>Is the PCM toxic or corrosive? (to steel?)</span><br />
<span style="background-color: transparent; vertical-align: baseline;"><span class="Apple-style-span" style="white-space: pre-wrap;"> savEnrg PCM use non toxic base materials - some inorganic PCMs may be corrosive to some metals - test data is </span><span class="Apple-style-span" style="white-space: pre-wrap;">available</span><span class="Apple-style-span" style="white-space: pre-wrap;"> on request. </span></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">11. Do the material properties degrade over time and/or per phase change cycle?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> sabEnrg PCM are tested upto 3000 cycles and cycling tests upto 5000 cycles are under progress (one cycle is from solid-liquid-solid). </span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> </span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">12. How is the material transported?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> The material can be shipped in bulk form (in containers 10lts 100ltrs packing)- so that in can be encapsulated at the customer end.</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> We prefer to give the material in encapsulated form – PCM properties can change due to exposure to air, water etc.</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">13. How is the material stored?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> It has to be stored in cool, dry place - with sealed condition</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">14. Do the material properties degrade due to UV radiation?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> We don't have data on this. But typically it will not. For organic substances we add stabilizers to prevent degradation.</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">15. Could this material be mixed with other types of insulation?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Most of our PCMs have good compatibility with many insulation materials. They cannot be mixed with insulations. The insulation material can be another layer after the PCM material.</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"></span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;">16. What are your major uses or customers for the material right now?</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Free Cooling (to act as a back up the Air conditioner)</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Cold Storage / Transportation</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Thermal Energy Storage tanks - for Air conditioning in buildings</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Temperature sensitive materials transportation / storage (medicines etc)</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> Solar energy storage</span><br />
<span style="background-color: transparent; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline; white-space: pre-wrap;"> And many...</span></span></div></div>savEnrg™http://www.blogger.com/profile/00067657917483676734noreply@blogger.com3