Thermal Properties Optimization of Envelope in Energy-saving Renovation of Existing Residential Building
Huang Jian'en,Lyu Henglin,Feng Wei,Chen Yanxia and Zhou Tai
DOI:10.11835/j.issn.1674-4764.2013.05.020
Received ,Revised , Accepted , Available online July 01, 2015
Volume ,2013,Pages 118-124
- Abstract
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.