中南大学学报（自然科学版）2012，Vol.43Issue(4)：1545-1550,6.
夏热冬冷地区居住建筑屋顶保温层最佳厚度分析
Analysis on optimum insulation thickness of residential roof in hot summer and cold winter zone
摘要
Abstract
Considering the effect of solar radiation on beat transfer through roof and the two schedules of 24 h and nighttime operations for cooling and heating equipments, the equivalent cooling and heating degree-hours were used to calculate the energy consumption for cooling and beating. On this basis, the optimum insulation thicknesses of four insulation materials for a typical roof with different surface colors were studied using the P1-P2 economic model and life cycle analysis in cities of hot summer and cold winter zone including Shanghai, Changsha, Shaoguan and Chengdu. Life cycle costs, life cycle savings and payback periods in employing the insulation material with optimum thickness were also calculated. The results show that the optimum insulation thicknesses from high to low in turn are colloidal polypbenyl granular, expanded polystyrene, inorganic insulation mortar and extruded polystyrene. For 24 h operation of cooling and heating equipments, the optimum thicknesses of four materials are between 85-161 mm, the life cycle costs range from 125.4 to 251.4 RMB Yuan/m2 and life cycle net savings range from 363.9 to 787.3 RMB Yuan/m2; compared with the 24 h operation, the optimum thicknesses, life cycle costs and net savings during night time operation reduce by about 21%, 16% and 40%, respectively.关键词
保温层/最佳厚度/太阳辐射/生命周期/能耗Key words
insulation/ optimum thickness/ solar radiation/ life cycle/ energy consumption分类
建筑与水利引用本文复制引用
于靖华,田利伟,杨昌智..夏热冬冷地区居住建筑屋顶保温层最佳厚度分析[J].中南大学学报（自然科学版）,2012,43(4):1545-1550,6.基金项目
中央高校基本科研业务费专项资金资助项目(2011QN123) （2011QN123）
高等学校博士学科点专项科研基金资助项目(20110142120084) （20110142120084）
