不同下垫面的反射特性对空调负荷的影响  

Influence on cooling load induced by the reflection characteristics of different ground surfaces

作　　者：马秀力[1] 肖勇全[1] 李彬[1] 

机构地区：[1]山东建筑工程学院热能工程学院,山东济南250014

出　　处：《山东建筑工程学院学报》2005年第5期35-38,共4页Journal of Shandong Institute of Architecture and Engineering

摘　　要：阐述并计算了混凝土和草坪两种典型不同下垫面所导致的反射辐射和热辐射热量的差异,同时对它们的不同所造成的差值在围护结构向室内传热量中的比例进行了计算和分析,结果发现由混凝土地面导致的通过围护结构由室外向室内的传热量比由草坪引起的大26.94～58.55W/m2.提出应尽量采用经绿化的下垫面,或者是采用向地面洒水等措施来降低下垫面的温度,以减少围护结构额外的得热量,从而减小空调冷负荷,降低建筑物的能耗.The different of two typical kinds of different ground surfaces＇ reflection radiation and thermal radiation that are induced by concrete road and lawn are explained and calculated. At the same time, the proportion of the heat caused by the different ground surfaces that transferred to the room though the building envelope are calculated and analyzed. The conclusion is that the heat transferred to the room through building envelope caused by concrete road surface is 26.94～58.55W/m^2 more than by the lawn. The measures of afforesting the ground surfaces or watering the ground to reduce the ground surfaces＇ temperature are. put forward for reducing the extra heat of taking to the building envelope, the cooling load and energy consumption of the building.

关 键 词：下垫面 反射辐射 热辐射 冷负荷 比例 

分 类 号：TK31[动力工程及工程热物理—热能工程]