Numerical Simulation of Thermal Performance of Micro-PCM Cement Mortar Composite Wall

Abstract

In order to give full play to the effect of temperature regulation and energy saving of the phase change wall, the cement mortar mixed with phase change microcapsules was coated on the surface of the wall to form the phase change energy storage wall. Considering the thermal response of the temperature inside the wall, the heat transfer theoretical model of the phase change energy storage wall was established. The heat transfer process in the phase change energy storage wall and the temperature change inside the wall. The calculation results show that the content of phase change microcapsules in the phase change energy storage wall is one of the important factors affecting the temperature attenuation of the inner side of the wall. The peak time of the temperature change response curve on the inner side of the phase change wall is lagging behind that of the conventional wall, and the existence of the highest temperature is also lower, the peak temperature fluctuation is also lower, and the heat flow is reduced. It can be seen that the introduction of phase change microcapsules into the wall can achieve the purpose of reducing the temperature inside the wall and reducing the capacity of the air conditioning and refrigeration system of the building, which provides a good way to reduce the energy consumption and cost of building refrigeration.