Investigation on Performance of Latent Heat Thermal Energy Storage for Cooling Applications

Abstract

The global use of air conditioning and refrigeration services is consistently newlinerising. The increased energy demand has resulted in daily and seasonal variations in the newlineusage of power, posing complications in terms of power supply and demand. The newlinedemand for cooling applications increases severalfold, and the integration of the Phase newlinechange material (PCM) based cool thermal energy storage (CTES) system will mitigate newlinethe fluctuations in power demand and pollution caused by the building sectors. newlineThis research work aims to study the solidification behaviour of deionized newlinewater in spherical capsules with different encapsulation sizes, volume percentages of newlinephase change material, and operating bath temperatures, to explore the merits of the newlinelarger size encapsulation over the smaller one. A Box-Behnken experimental design newlinesizes considering partial charging conditions. newlineusing response surface methods (RSM) is adopted to find out the optimum capsule size. newlineIf is found that 100 mm spherical capsule gives the better performance than the other newlineThe experimental investigation is carried out to study the influence of newlinecarbon graphene flakes nanoparticle concentrations in DI water at various heat transfer newlinefluid temperatures of -6, -9, and -12 and#8451;. The carbon graphene flakes (CGF) with higher newlineconcentrations of 0.4, 0.8, and 1.2% with the base PCM are investigated experimentally newlinein a stainless-steel spherical capsule of 100mm diameter newline