Simulation of a heat pump heating system based on seasonal solar energy storage by phase change material used in Harbin

Presents the principle, the components and the operation modes of the system. Develops a mathematic model of the system. Simulates and analyses the heat energy collected by the solar collector, the inlet and outlet temperatures of heat transfer fluid in the energy storage tank, the mean temperature of the phase change material(PCM) and the heat losses from the energy storage tank under different combinations of the collector area and the storage volume for the system with PCM of CaCl2·6H2O applied to a villa in Harbin area. The results indicate that the energy collected by smaller solar collectors could be sufficient for the heat load of a building when the collector area and the storage volume are optimally matched.