淋水方式下加气混凝土蒸发屋面隔热性能实验研究  

Experimental Study of the Heat Insulation Performance of an Aerated Concrete Evaporated Roof by Spraying Water

作　　者：王志刚 赵立华[2] Wang Zhigang;Zhao Lihua

机构地区：[1]华南理工大学建筑学院,亚热带建筑科学国家重点实验室 [2]华南理工大学建筑学院,亚热带建筑科学国家重点实验室,广州市景观建筑重点实验室

出　　处：《南方建筑》2018年第3期117-121,共5页South Architecture

基　　金：国家自然科学基金资助项目:湿热地区城市多孔铺装材料动态蒸发量数学模型研究;项目编号:51308223;国家自然科学基金资助项目;墙体材料热湿膨胀机理与实验方法研究;项目编号:51308222

摘　　要：研究淋水方式下加气混凝土作为蓄水层的蒸发屋面隔热性能可以更好的指导在实际工程中应用。借助热湿气候风洞发现温度控制淋水模式要优于定时控制淋水模式。通过室外实验,发现采用淋水方式,全天蒸发潜热可消除50%以上的太阳辐射热,上表面平均温度可降低5.6℃左右,降幅达12.5%。对加气混凝土试件不同厚度处的温度进行分析,最终确定2cm厚度较为合适。Study of the heat insulation performance of an evaporative roof with aerated concrete as the water storage layer could improve its application in practical engineering. The present study utilized a hot and wet climate wind tunnel and found that the temperature control drenching mode was better than the time control water spray mode. Outdoor experiments showed that by spraying water on the evaporative roof, the latent heat built up over the entire day could be decreased by more than 50% of the solar heat radiation, and the average temperature on the upper surface could be decreased by 12.5%, with a reduction of approximately 5.6 ℃. The temperature of the aerated concrete specimen at different thicknesses was also analyzed and a 2cm thickness was determined to be the most suitable.

关 键 词：蒸发屋面 加气混凝土 淋水模式 

分 类 号：TU111[建筑科学—建筑理论] TU551