重庆地区农村建筑热工性能现状与节能潜力分析

摘要

In order to understand the current energy-saving development of rural buildings in Chongqing,investigates the thermal performance of rural building envelope in Chongqing by questionnaire survey and on-site interview.The results show that the overall thermal performance of rural buildings in Chongqing is poor,the outer windows and exterior walls can not meet the standard requirements,and the application of external shading is rare and mainly concentrated in south orientation.Selecting a typical design scheme of rural buildings in Chongqing,simulates the annual heating and cooling energy consumption of the building by DesignBuilder software,and analyses the energy-saving potential and economy of thermal performance optimization of the rural building.Recommends that double-layer hollow glass and plastic-steel window frame should be used for the outer windows of rural buildings in Chongqing,the exterior wall should adopt external insulation measures,the external shading should be adopted and the horizontal shading should be selected in south orientation.%为了解目前重庆地区农村建筑的节能发展现状,采用问卷调查结合现场访谈的形式对重庆地区农村建筑围护结构热工性能现状进行了调研,结果表明,重庆地区农村建筑热工性能整体较差,外窗与外墙达不到标准要求,外遮阳应用很少,且主要集中在南向.选取重庆地区农村建筑某典型设计方案,利用DesignBuilder软件模拟了建筑全年供热供冷能耗,就农村建筑热工性能的优化进行了节能潜力与经济性分析,建议重庆地区农村建筑外窗采用双层中空玻璃加塑钢窗框,外墙采用外保温,建筑采用外遮阳设计,并推荐南向选用水平遮阳.