被动蒸发冷却屋面在夏热冬冷地区的应用

Application of Passive Evaporative Cooling Roof in Hot-Summer and Cold-Winter Zone

被动蒸发冷却屋面作为一项节能技术,在夏热冬冷地区的应用目前并不广泛。在国家大力提倡节能降耗的背景下,被动蒸发冷却技术作为一项"被动式"技术可以有效地与"主动式"技术结合起来,最终达到一个节能舒适的室内居住环境。查阅相关研究成果,主要介绍了遮挡式蓄水屋面和含湿多孔材料屋面两种常见被动蒸发冷却屋面。利用CFD软件对其进行模拟,并与普通刚性屋面进行对比,从不同的角度对被动蒸发冷却屋面技术进行简要的分析。研究了被动蒸发冷却屋面的降温幅度以及建筑体型系数对其影响,分析了被动蒸发冷却屋面的热舒适性。

Passive evaporative cooling technology is an energy-saving technology,it is not widely used in the hot summer and cold winter region.Under the background of the national energy efficiency,“passive”evaporative cooling technology can effectively combine with the“active”technology.An energy efficient and comfortable indoor living environment is achieved.Accessing to the relevant research results,this paper mainly introduces two kinds of common passive evaporative cooling roof,which are water retaining roof and porous material roof,which are simulated by CFD software and compared with ordinary rigid roof.The technology of passive evaporative cooling roof is analyzed from different angles.The cooling range of passive evaporative cooling roof and the influence of building shape coefficient are studied.The thermal comfort of passive evaporative cooling roof is expounded.