Experimental Investigation on Thermal Performance of Evaporator using PCM

Abstract

The project is mainly focused on improving the performance of evaporator using the phase change materials (PCM) associated with the evaporator in a refrigeration system. The usage of phase change material (PCM) to improve the with stand time of the evaporator temperature and also enhances the heat transfer rate thus improve the COP (Coefficient of performance) of refrigeration. Using Sodium chloride, Magnesium Chloride and Diethylene glycol as PCM and for a certain thermal load it is found that with stand time of evaporator increased by 48 minutes and the COP (Coefficient of performance) of the conventional refrigerator increased up to 35 per cent. Here the phase change material (PCM) used in a chamber built manually and which surrounds the Evaporator chamber of a refrigeration system. On considering the PCMs with remarkable properties such as low freezing point, increases with stand time remarkably and also improves the COP (Coefficient of performance) the refrigeration system. Also, performance range of the refrigerant R407c And R134a has been studied along with the effects of the PCM named above in the both systems.