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Analysis of Heat Charging and Discharging on the Phase Change Energy- Storage Composite Wallboard (PCECW) in Buildings

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This research paper combines the phase change material and the basal building material to constitute a kind of new phase change energy- storage composite wallboard (PCECW), applied in a residential building in Beijing. We analyzed the energy-storage characteristics of the PCECW according to phase change energy-storage theory, which is used as the storage-heat body in the “light" inner wallboards, compared to the normal “heavy" inner wallboards. Through computer simulation, we measured the effects on the heating and energy consumption of the room when the enthalpy, thermal coefficient and thickness of the PCECW were changed. The results show that the PCECW the phase change wall could effectively reduce the temperature fluctuation and the winter heating energy consumption in the residential building