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.
出处
《土木建筑与环境工程》
CSCD
北大核心
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)
关键词
既有居住建筑
围护结构
节能改造
热工性能
优化
existing residential building
building envelopes
energy-saving renovation
thermal propertiesoptimization