相变储能建筑材料的发展

建筑墙板、天花板和顶板中掺入适当的相变材料(PcMs),能提高其表面因接受太阳光辐射而储蓄能量的能力,这样可以在一个较长的时间内,减少因空气流动造成的室内温度波动,维持室内温度接近到要求的温度,提高人体的舒适度。运用这种相变储能建材,可将电力供给峰期时的加热或制冷负荷转移到谷期,使用户降低使用费用。本文对建筑相变储能材料的研究进行了回顾,并讨论了PCMs的选择和封装所存在的问题。

Development of Phase Change Energy Storage Building Materials

Energy storage in wall panels, ceilings and floors of buildings could be enhanced by adding suitable phase change materials (PCMs) to their surfaces to capture solar energy directly and increase human comfort by decreasing frequency of internal air temperature swings and maintaining temperature closer to the desired level for a longer period of time. Use of these materials could shift heating or cooling load of power supply from peak period to off-peak period, lowering the cost of power supply for users. Researches on phase change energy storage building materials were reviewed and problems with regard to selection of PCMs and methods used to encapsulate them were also discussed.