DefinePK

Abstract

In the present work an attempt is made to store solar energy in Paraffin and Palmitic acid and the eutectic mixture of the two and compared with each other. Cylindrical type tube heat exchanger is used for the storage purpose and water is used as a heat transfer fluid (HTF). The storage time for charging and discharging processes of the three materials are measured. The conditions of discharging process are discharging by hot water in the storage tank, discharging by cold water and by keeping the storage tank empty. The results showed that the eutectic mixture has better storage capacity, and time to retain the high temperatures compared with the base materials. It is suggested that this phase change material (PCM) is suitable for storing the hot water for a longer period of time during adverse climatic conditions.