Navigation Links
Cheap beads offer alternative solar-heating storage
Date:12/2/2011

A cheap material that can store heat energy collected from the sun during the day that can be released slowly over night has been developed by researchers in the India. The material based on paraffin wax and stearic acid is described in a forthcoming issue of the International Journal of Renewable Energy Technology and could help keep homes warm in sunny parts of the world that get very cold at night without burning wood or fossil fuels.

Mechanical engineer Meenakshi Reddy of Sri Venkateswara College of Engineering and Technology, in Chittoor, Andra Pradesh, and colleagues explain how certain materials, known as phase change materials (PCM) can store a large amount of heat in the form of latent heat in a small volume. PCMs have a high heat of fusion and melt/freeze at a certain temperature. Heat is absorbed when the material melts and released when it freezes. Heated in the sun, the mixture of paraffin wax (which melts at about 37 Celsius) and stearic acid (a fat commonly used to make soap) becomes entirely liquid. However, as it solidifies it slowly releases the stored heat. The process is akin to the phase changing heating that occurs in hand-warmers that contain a PCM but in this case the material does not need to be boiled in a pan or heated in a microwave oven to absorb latent heat.

The team has now tested spherical capsules just 38 millimetres in diameter containing a blend of paraffin and stearic acid, which can be floated on the top of water in a tank. Stearic acid is a lot cheaper on the Indian market than paraffin and more readily available. The team found that costs could be held down without reducing the overall heating efficiency of the capsules by lowering the proportion of paraffin wax.


'/>"/>

Contact: R. Meenakshi Reddy
rmreddy123@gmail.com
Inderscience Publishers
Source:Eurekalert

Page: 1

Related biology news :

1. Caltech scientists develop barcode chip for cheap, fast blood tests
2. Cheap love costs the Earth
3. Cheap and efficient white light LEDs new design described in AIPs Journal of Applied Physics
4. Toward cheap underwater sensor nets
5. A quicker, cheaper SARS virus detector -- one easily customizable for other targets
6. Tires made from trees -- better, cheaper, more fuel efficient
7. Faster, cheaper way to find disease genes in human genome passes initial test
8. Simple test could offer cheap solution to detecting landmines
9. Boston University reseachers develop faster, cheaper DNA sequencing method
10. ASU scientists develop universal DNA reader to advance faster, cheaper sequencing efforts
11. Orange peels, newspapers may lead to cheaper, cleaner ethanol fuel
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... December 1, 2016 The ... Voice), Future Technology (Iris Recognition System), Vehicle Type ... Global Forecast to 2021", published by MarketsandMarkets, the ... in 2016, and is projected to grow to ... of 14.06%.      (Logo: http://photos.prnewswire.com/prnh/20160303/792302) ...
(Date:11/29/2016)... BioDirection, a privately held medical device company ... detection of concussion and other traumatic brain injury (TBI), ... meeting with the U.S. Food and Drug Administration (FDA) ... During the meeting company representatives reviewed plans for clinical ... commencement of a planned pilot trial. ...
(Date:11/24/2016)... 23, 2016 Cercacor today introduced Ember TM ... trainers non-invasively measure hemoglobin, Oxygen Content, Oxygen ... Respiration Rate in approximately 30 seconds. Smaller than a ... immediate access to key data about their bodies to ... regimen. Hemoglobin carries oxygen to muscles. ...
Breaking Biology News(10 mins):
(Date:12/7/2016)... ... December 07, 2016 , ... A new study ... setting of previously treated, advanced pancreatic cancer, liquid biopsies are not yet an ... and timing of blood sampling may improve the value of a blood-based test.” ...
(Date:12/7/2016)... 7, 2016  Nordion, a standalone business of ... welcome today,s award by the United States Department ... of the Phase II cooperative agreement funding to ... the University of Missouri Research Reactor Center (MURR ... the establishment of a new, reliable supply of ...
(Date:12/7/2016)... Dec. 7, 2016  Muse bio, a privately-held company ... announced that Dr. Kevin Ness has been ... of Directors. Kevin succeeds Muse bio,s ... company,s Chief Science Officer as well as remains Slade ... the BioDesign Center at the RAS Energy Institute at ...
(Date:12/7/2016)... ... December 07, 2016 , ... JULABO USA is ... cart. The new website has been designed to provide the best user-friendly experience ... to access detailed product information, read educational industry content as well as share ...
Breaking Biology Technology: