极端热湿地区建筑被动蒸发冷却技术应用潜力实验研究  

Experimental Research on the Application Potential of Passive Building Evaporative Cooling in Extreme Hot-humid Region of China

作　　者：潘振皓 李琼[2] 孟庆林[2] PAN Zhenhao;LI Qiong;MENG Qinglin(College of Architecture and Arts,Pan-Beibu Gulf Architecture and Technology Research Center,Building Environment and Energy Laboratory of CAA,Guangxi Arts Universityt Nanning 530007,P.R.China;State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510641,P.R.China)

机构地区：[1]广西艺术学院,建筑艺术学院,泛北部湾建筑艺术与绿色建筑研究中心,建筑环境与能量实验室,南宁530007 [2]华南理工大学,亚热带建筑科学国家重点实验室,建筑节能研究中心,广州510641

出　　处：《建筑科学》2021年第8期116-122,共7页Building Science

基　　金：国家重点研发计划战略性国际科技创新合作重点专项“‘一带一路’共建国家绿色建筑技术和标准研发与应用”(2020YFE0200300);国家自然科学基金重点项目“含盐热湿气候条件下建筑热质耦合传递及节能研究”(51938006);2019年度广西高校中青年教师基础能力提升项目“面向广西民族景观建筑设计的被动蒸发降温技术研究”(2019KY0494);广西艺术学院2019年度高层次人才科研启动经费项目“面向广西地域环境的蒸发降温建筑设计方法研究”(GCR201902)。

摘　　要：建筑被动蒸发冷却技术能有效减少围护结构得热,有助于解决我国极端热湿地区因长年高温高湿所导致的建筑过热问题。多孔材料的实际蒸发冷却效益与气象要素作用关系密切。本文利用热湿气候风洞实验台,基于我国南海气象数据,测试以多孔陶质砖为媒介的建筑被动蒸发冷却技术的应用潜力,探索各气象要素对蒸发冷却过程的影响机理。结果显示,极端热湿气候中,被动蒸发冷却技术具有1.5~6.4℃的冷却效益潜力。在淋水时机选择方面,宜以太阳辐射强度为首要决策指标,以气温为次要决策指标,可获得较好冷却效益,并节约水耗。Evaporative cooling can effectively solve the overheating problems in extreme hot-humid climate. The evaporation and cooling performance of porous materials are closely related to actual meteorological conditions. This paper investigated the application benefits of passive evaporation cooling technology and impacts of the meteorological factors in a wind tunnel. Porous ceramic bricks were used as the water storage medium. The testing environments were reproduced according to the meteorological data of the South China Sea in the wind tunnel. The results show that the cooling efficiency of this technology is around 1. 5 ℃ to 6. 4 ℃. In order to obtain better cooling and water-saving benefits,solar radiation intensity should be taken as the primary decision-making index of the water pouring timing,and air temperature as the secondary decision-making index.

关 键 词：蒸发冷却 极端热湿气候 多孔材料 建筑节能 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]