Study of the Optimum Insulation Thickness of Opaque Envelope using Solar-Air Degree-Days

摘要：

Thermal insulation of opaque envelope is one of the most effective way for cooling and heating energy saving. Firstly, Insulation material is chosen by considering the thermal conductivity and price, the insulation material with higher energy saving performance and relative lower price should be preferred. Secondly, the increasing of insulation material thickness will decrease energy consumption, however, the investment for the insulation cost will increase, and there must be an optimum point where the total investment cost for the insulation and energy consumption can be minimized over the lifetime. Therefore, the selection of proper insulation material and the determination of optimum insulation thickness are very critical for the economic analysis. The determination of optimum insulation thicknesses for opaque envelope is studied based on the life cycle cost analysis using P1-P2 economic model. Solar-air cooling and heating degreedays are calculated which considers solar radiation during cooling and heating seasons for calculation of heat transfer. Life cycle savings (LCS) and payback periods resulting from the use of optimum thickness insulation are calculated based on lifecycle cost analysis.

关键词： Optimum Thickness Payback Perioad Life Cycle Total Costs Life Cycle Savings

作者: Jinghua Yu Changzhi Yang Liwei Tian Dan Chen

作者单位: College of civil engineering,Hunan University,Changsha,China China Railway Siyuan Survey and Design Group Co.,LTD,Wuhan 430063,China

会议类型: 国际会议

会议名称: The 6th International Symposium on Heating,Ventilating and Air Conditioning(第六届国际暖通空调学术会议)

会议地点: 南京

会议语种:英文

页码: 153-159

在线出版日期: 2009-11-06（万方平台首次上网日期，不代表论文的发表时间）