Stearic acid/expanded graphite as a composite phase change thermal energy storage material for tankless solar water heater

Tankless solar water heater (TSWH) integrated phase change materials (PCMs) is a promising field due to its low cost, low heat loss, and compact structure. To obtain a composite PCMs that suitable for tankless solar water heater application, the expanded graphite (EG) in different mass fraction (2 wt.%, 6 wt.%, and 10 wt.%) were added to stearic acid (SA) via melting impregnation. The thermophysical properties including phase change temperature,...