城市住宅节能技术的优化探讨

根据国务院部署大力发展节能省地型建筑,建设节约型社会的要求,全面实施建筑节能50%设计标准,进而推动城市节能65%标准的实施。目前,我国大部分城市正在制订或者已经执行居住建筑节能65%的标准。如何将建筑的性能化节能指标转化为围护结构的热工性能指标,需要对节能50%设计标准的住宅热工性能现状进行分析总结,才有可能在技术上找到合理地提高住宅节能水平的设计方法。结合近年来西安市住宅围护结构的构造做法和热工性能,其节能指标与节能50%、节能65%标准的比较,找出目前住宅的热工性能指标与新标准的差距。据此提出应优先采用高效节能保温窗;墙体保温材料的选择要综合考虑保温层的特点、造价等因素;同时,对于因抗震设计而产生的热桥影响应引起高度重视,以寻求新的构造方式加强热桥部位的保温。

EXPLORATION OF OPTIMIZATION MEASURES FOR ENERGY SAVING TECHNOLOGY OF URBAN RESIDENTIAL BUILDINGS

According to the deloyment of State Council the demands on greatly developing energy and land saving buildings and building up a saving society,it should be implemented the standard of building energy-saving 50% all over the country, so as to impel the execution of energy saving 65% standard of urban residetial buildings.Many cities are establishing or have carried out the dwelling building energy saving 65% standard in China.How could building energy-saving index be changed into envelope thermal property index? It should be analyzed the situation of existing buildings under energy saving 50% standard and be got a reasonable design method to improve energy-saving technology.Combining the situation of the buildings in(Xi'an),it will be found out the gap between thermal property index of existing buildings and new design standard,and several mending measures will be proposed.