居住建筑外墙外保温厚度的优化分析

Optimizing insulation thickness of external walls for residential buildings

以重庆地区常见的几种居住建筑外保温墙体结构为例,采用采暖和空调度日数并结合现值系数的方法,得出不同墙体构造时保温材料经济厚度值。指出影响墙体保温经济厚度的因素有建筑物所在区域、空调运行时间、保温材料价格等。分析结果证实:墙体保温采用优化设计后的经济厚度值时,其生命周期内费用低,新增初投资的回收周期短。

Many residential buildings use externally-insulated wall structures in Chongqing, P.R. China. The process of determining the economic insulation thickness was based on degree days and present worth factor when wall structure adopted different insulation materials. The optimal economic insu thickness was related to the region of the building, air conditioning operating time, and price of insu material. Insulation materials with better thermal performance have a shorter payback time and prospects for application. lation lation wider