既有居住建筑围护结构节能改造热工性能优化  

Thermal Properties Optimization of Envelope in Energy-saving Renovation of Existing Residential Building

作　　者：黄建恩[1] 吕恒林[1] 冯伟[1] 陈艳霞[1] 周泰[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院,江苏徐州221116

出　　处：《土木建筑与环境工程》2013年第5期118-124,共7页Journal of Civil,Architectural & Environment Engineering

基　　金：江苏省"六大人才高峰"资助项目(2010-JZ-006)

摘　　要：既有建筑物窗墙比差异较大,在节能改造过程中窗墙比和窗的热工性能对保温层厚度的影响不可忽视。在《严寒和寒冷地区居住建筑节能设计标准》围护结构节能设计规定的基础上,提出围护结构等效传热系数限值,综合考虑朝向、窗墙比、窗户的类型等因素,建立了外墙保温层厚度计算模型和围护结构热工性能参数优化模型,并以徐州地区某既有住宅为例,验证了模型的可行性。The impact of windows to wall ratio and thermodynamic performance of windows on the insulating layer thickness cannot be neglected in existent residential building energy-saving renovation because of the bigger difference of windows to wall ratio. The limited equivalent coefficient of envelope heat transfer was posed based on ＂Design standard for energy efficiency of residential buildings in severe cold and cold zones＂. Factors of orientation, windows to wall ratio and windows types should be comprehensively considered in building calculation model of thermal insulation thickness of external wall and envelope thermodynamic performance optimization model. These models are validated by an existing residential building in Xuzhou.

关 键 词：既有居住建筑 围护结构 节能改造 热工性能 优化 

分 类 号：TU111.195[建筑科学—建筑理论]