Abstract
This article presents the experimental performance investigation ofsolar still integrated with two types of phase change materials namelyLauric acid and Myristic acid independently, used as storage mediumof solar energy. The experiments were performed during the months ofApril-May 2011, under Indian climatic conditions. The effect of inputparameters such as mass of water in basin and mass of phase changematerial integrated with solar still basin on productivity of the solar stillhas been studied. Also on the basis of the experimental data the valuesof exergy and energy were calculated. It has been found that (i) produc-tivity of solar still integrated with Lauric acid is 22% more than the solarstill integrated with Myristic acid. (ii) the energy efficiencies for solarstill integrated with Lauric acid and Myristic acid are found to be 39.6%and 34.4% where as exergy efficiencies values are 0.29% and 0.74% re -spectively (iii) the cost of using Lauric acid is lesser than using Myristicacid for same amount of productivity.
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