Experimental investigation on the thermal performance of double-layer PCM radiant floor system containing two types of inorganic composite PCMs

Double-layer radiant floor systems that consist of two inorganic phase change layers placed at different positions, were first explored for regulating the indoor thermal comfort in winter and summer climates. Specifically, two hydrated salts having different melting points were respectively compounded with expanded graphite to obtain enhanced thermal conductivity. In the floor systems, Na2HPO4•12H2O-based composite (31.3°C) and CaCl2•6H2O-based...