期刊论文

Optimum Insulation Thicknessof Exterior Wall and Its Environment Impacts

Chen, Youming(ymchen@hnu.edu.cn)

中文

湖南大学学报(自然科学版)

1674-2974

2017

44

9

182-187

10.16339/j.cnki.hdxbzkb.2017.09.023

国家自然科学基金

本校为其他机构

建筑外墙保温能有效地减少建筑能耗,从而减少因能源消耗而引起的环境污染问题.本文用多层墙体非稳态传热模型进行能耗计算,并用${P_1} - {P_2}$经济性模型分析居住建筑外墙的生命周期成本,预测4个朝向2种常用保温材料的最佳保温层厚度和节能效益.同时,提出等价燃煤量方法,分别计算最佳保温层厚度和不保温情况下的$C{O_2}$和$S{O_2}$排放量,并分析应用最佳保温层厚度的减排潜力.以长沙地区为例,结果表明,保温层最佳厚度范围为0.08~0.13 m,生命周期最大净现值为116.26~133.45元/m~2,投资回收年限为3.1~3.5年.根据性价指标,膨胀聚笨乙烯比挤塑聚笨乙烯更具经济优越性.当采用最佳保温层厚度时,$C{O_...

Thermal insulation is an effective way to reduce the energy consumption of buildings. And it is friendly for environment because the reduction of energy consumption means less emission. In this paper, the transient heat transfer model was used to calculate the energy consumption caused by the heat transmission cross the exterior wall into room. P1-P2economic model was used to analyze the life cycle total cost of exterior wall of residential building. The optimum thickness of the commonly used insulation materials including extruded polystyrene and expanded polystyrene was calculated with respe...