Paraffin has good thermal stability , heat storage capacity, also does not react with metals by means of chemical reaction and cost effective. Is there any alternate for this material ?
You can try with erythritol. It is an excellent low cost Phase Change Material, ideal for many medium-temperature solar applications! Much better than paraffins, you will see!
You can try with erythritol. It is an excellent Phase Change Material ideal for many medium-temperature solar applications! Much better than paraffins, as you will see.
At the Technische Universität Darmstadt in Germany they build a house with phase change materials in the walls (parrafin) and in the ceiling (salt hydrate). This combination was very effective. Here is a link. If you need further information the team normally is very helpfull. http://www.solardecathlon.tu-darmstadt.de/solar_decathlon_2009/surhome/engeneering/lowextechnology/lowextechnology.en.jsp
Worked on performance study of biomass gasifier based nergy generation, optimum efficiency of gasifier , cost analysis
Ice is an excellent PCM for maintaining temperatures at 0°C. But water’s freezing point is fixed at 0°C (32°F), which makes it unsuitable for most thermal energy storage applications.
capric and palmetic acid is the best phase change material having low melting point
Most sugar alcohols are cheap, efficient and renewable PCMs, such as erythritol indeed, but also xylitol, mannitol, sorbitol, arabitol, adonitol, etc. and their blends. Doing eutectics keeps the enthalpy by melting high (about 250 J/g) while decreasing the melting temperature at the same time (less than 100°C). You can refer to the excellent papers of Elena Palomo del Barrio and check her RG profile.
Alain
Dear Karthrick,
By combination of graphite and PCM, composites can be generated which have a heat conductivity up to 100 times higher than a pure PCM. Those can be used to create compact heat storage systems which are suitable for diverse applications, ranging from industrial processes and solar-power plants to the air-conditioning of buildings and vehicles. In industrial processes, these easily integrable units can regenerate over 90 percent of waste heat.
Graphite is a very corrosion resistant material and helps to control the corrosive behaviour of some PCM.
I f you need more information, please let me know via [email protected]
With best regards
Michael
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