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【摘要】 外墙节能是建筑节能的重要内容之一。不同厚度的保温材料的合理选取与建筑节能效果及建筑成本关系密切。以兰州市某一住宅建筑为模型,计算了不同保温材料的不同厚度的外墙热负荷值,分析了保温材料及其厚度对外墙热负荷的影响,并确定了不同保温材料在满足节能标准前提下的最小保温层厚度。 【Abstract】 The energy-saving of external-wall is one of the important contents of the building energy-saving.It is in close relation with the energy-saving effect of the building and construction cost that the thickness of different heat insulation material is chosen rationally.This paper regards a certain residential housing of Lanzhou as models,has calculated the heating load of external-wall of different heat insulation material,different thickness,have analyze the influence of the external-wall heating load of the heat insulation material and thickness,and has confirmed the minimum insulating layer thickness under the satisfied energy-saving standard prerequisite of different insulation material. 【关键词】 外墙; 外保温; 热负荷; 节能 【Key words】 external-wall; external insulation; heating load; energy-saving