THE THERMAL PERFORMANCE OF SHAPE-STABILIZED PHASE CHANGE MATERIAL OF WALLBOARD APPLIED IN THE NORTHERN RESIDENTIAL BUILDING

The paper presents a study on the thermal performance of a passive solar house with shape-stabilized phase change material (SSPCM) plates, which has been analyzed using a thermal capacity model. The dynamic mathematical and physics model of SSPCM was established, and the numerical solution for the wall with SSPCM plate temperature field was calculated. The effects of the PCM phase change temperature, latent heat, thermal conductivity and the thickness on the inner surface temperature of the SSPCM wallboard were analyzed, which causes different temperature distribution in the wall and different surface heat flow into the indoor environment. The decrement factor and time lag data were analyzed and the validity of the model and solving method were verified. Results in this paper can provide the basis for the application of phase change material walls to practical buildings when applying the PCM wallboard to the passive solar heat storage buildings.