Pre-Pilot Scale Microencapsulation of Phase Change Materials for Thermal Energy Storage Applications

Abstract

. Most of the researcher has attempted for the encapsulation of phase change materials in small scale for the thermal storage applications. However, energy conversion in field applications require enormous quantity of thermal energy storage materials. In this paper, a pre-pilot scale is developed for encapsulating of various binary mixtures using an in-situ polymerization technique.DSC, TGA, FTIR, XRD, and FE-SEM were used to delineate the thermal properties of obtained microcapsules in order to identify shape, mean size, functional groups, crystalline state, and weight loss of distinct microcapsules. The results show that the synthesized microcapsules were regular in shape and smooth and well encapsulated around cores. The thermal properties of different microcapsules are 34.9 ℃, 95.3 kJ/kg and 35.6 ℃, 98.5 kJ/kg resultant to microencapsulation of 75% Stearic acid (SA) + 25% Capric acid (CA) and 63% Capric acid (CA) + 37% Palmitic acid (PA),respectively. The encapsulation efficiencies were 78.2% and 73.09%. The yieldof the products are attained ~82%.