建筑外墙外保温厚度选择及其经济性分析

Thickness Choice and Economic Analysis on Exterior Wall External Insulation

选取合理的外墙保温层厚度不仅能有效地改善建筑室内热环境,还能降低建筑能耗,取得良好的经济效果。通过对建筑外墙外保温材料的投资费用和采暖空调运行费用分析,选取净现值、动态投资回收期以及经济效益等评价指标对建筑外墙外保温不同厚度进行经济评价,确定其经济厚度。以成都某住宅建筑为例,结合DeST-h的能耗模拟以及Matlab的曲线拟合功能,计算分析了外墙外保温使用EPS板的经济厚度,为不同地方选取建筑保温层厚度提供了一种经济性分析方法。

Selection of suitable external wall thermal insulation thickness can not only improve the indoor thermal environment of the building,but also reduce the energy consumption and get good economic effect.By analysis to the investment costs of building exterior insulation material and the operation cost of heating air conditioning,the economic effects of buildings with different external wall insulation thicknesses were evaluated and the optimum insulation thickness determined using dynamic investment recovery period,and net present value,and economic benefit as indexes.Taking a residential building in Chengdu for example,using the energy consumption simulation of DeST-h and the curve fitting function of Matlab,the optimum external wall insulation thickness was calculated when using EPS boards.The work provided an economic analysis method for selecting building insulation layer thickness in different places.