During the period of use, buildings need to continuously consume a large amount of energy, which accounts for about 30% to 40% of human energy consumption, and most of them are used for heating and air conditioning. Moreover, as the population grows, the high energy consumption of buildings is bound to increase, which will put more pressure on energy supply. The development of building energy storage systems has become one of the solutions to the problem.
Phase change material (PCM) is a material that uses the latent heat of phase change to absorb, store and release thermal energy. Microcapsule technology is used to encapsulate the phase change material to make stable microcapsule phase change material (MCPCM) solid particles, which can absorb/release the latent heat of phase change in a narrow temperature range and have significant heat storage Temperature adjustment function. The use of microcapsule phase change materials in building interior wall coatings can reduce the frequency of indoor air temperature fluctuations, keep the temperature close to the required temperature for a long period of time, increase human comfort, and achieve the purpose of energy saving.