建筑高性能外墙外保温经济厚度分析

Analysis of Economical Thickness of Exterior Insulation for High-performance Wall

目前外墙被动式节能技术已成为提高建筑整体性能的重要手段之一,但考虑到经济性原因,还需要研究外墙最佳经济厚度,来实现既经济又节能的目的。本文利用De ST-h建立校核成功的建筑模型,并对其在不同保温材料、不同保温层厚度情况下进行了负荷模拟分析,同时运用净现值法最终确定了郑州某典型建筑若应用石墨改性膨胀聚苯板、STP超薄真空绝热保温板、挤塑聚苯板和改性聚氨酯等常见4种外保温材料时,其最佳经济厚度值分别为65 mm、10 mm、45 mm和30mm,从而可供设计人员参考使用。

This paper takes a certain typical residential building in Zhengzhou as the model case,and uses De STh software to simulate the energy consumption of four kinds of insulation materials,namely,modified graphite EPS panel,STP ultrathin vacuum insulation panel,XPS panel,and modified PU insulation material,in different thicknesses. Based on this,net present value method is adopted to calculate the optimum economical thicknesses of the four insulation materials are respectively 65 mm,10mm,45 mm and 30 mm.