Performance Comparison of Phase Change Materials for Thermal Energy Storage

Jagannath, K and Dinesha, P (2017) Performance Comparison of Phase Change Materials for Thermal Energy Storage. Materials Science Forum, 909. pp. 231-236. ISSN 1662-9752,

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Abstract

To use solar energy effectively and as a standalone source, the performance of thermalenergy storage device is crucial. The quantity and quality of energy stored using these devices playan important role in the efficient operation of thermal engineering equipment in the area of Heating Ventilation and Air Conditioning (HVAC), Refrigeration and many other. The selection of storagesystem depends mainly on application considering quality of energy and cost of storage. Phasechange materials (PCM) have played a vital role in the storage of thermal energy in various applications. Out of the various types of phase change materials, organic compounds have a distinctadvantage of high latent heat per unit volume, high thermal conductivity, non-flammability and lowcost compared to inorganic compounds. The present study compares the performance of two of themost commonly used phase change materials like Paraffin wax and Fatty acids which are organic.They are highly chemically stable, melt congruently and super-cooling does not pose as asignificant problem. Moreover, they have been found to be compatible with various kinds ofmaterials of common use. The various performance parameters like temperature variation during charging and discharging, heat absorbed and rejected and overall system efficiency are evaluatedfor these two materials and also for the combination of these two materials. From the experimentalresults it is concluded that fatty acids show better performance characteristics than paraffin waxunder the same operating conditions. Combination of the two PCM does not give much advantage in terms of operating efficiency

Item Type: Article
Uncontrolled Keywords: Phase change material, Thermal energy storage, Heat transfer fluid, Solar energy
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 25 Nov 2017 06:55
Last Modified: 25 Nov 2017 06:55
URI: http://eprints.manipal.edu/id/eprint/150070

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