西北新农村居住建筑外墙经济保温层厚度分析

Analysis on Optimum External Wall Insulation Thickness for New Rural Residential Buildings in Northwest Region

利用DeST-h软件对10组0-90 mm不同外墙保温层厚度的典型西北新农村建筑采暖能耗进行了模拟分析,并确定了最佳外墙经济保温层厚度。结果表明外墙保温可明显降低建筑采暖能耗,采暖节能率可达到26%,外墙保温层厚度的增加在降低建筑采暖能耗的同时增大了外墙保温投资费用,采用生命周期成本分析法确定西北新农村建筑采用挤塑保温板为保温材料时最佳外墙经济保温层厚度为55 mm。

The energy consumption for heating is analyzed by DeST-h through the simulation of typical new rural construction in northwest China with 10 groups of 0 -90 mm different insulation layers.The results show that external wall insulation reduces the energy consumption required for space heating and the energy-saving rate could be 26%. The increase in insulation thickness reduces the energy consumption required for space heating, while the insulation cost increases. Economic analysis for optimum insulation thickness are carried out by the LCC method with XPS and the optimum external wall insulation thickness is 55 mm for typical new rural constructions in northwest China.