Study on thermal performance in winter of building envelope walls insulated with expanded polystyrene board

摘要：

Building energy consumption is tremendous in China. The energy consumption of building envelope walls is 4-5 times higher compared with that of developed countries. The envelope walls built by solid clay brick and other masonry materials have a poor thermal insulation performance, and can not meet the requirements of building energy efficiency. This paper investigates the thermal performance in winter of thermal insulation composite walls in Beijing area by using response factor method and finite difference method. The results show that the external solid brick walls composed with 50 mm thick expanded polystyrene board on their outside surfaces can reduce the hourly heat transfer about 67.5％;the peak value of heat transfer of the composite wall reduced and changed flatly, it has a good heat stability which is benefit for building energy conservation and the operation and control of heating equipment;the hourly unsteady-state temperature of the inner surface of the composite wall is much closer to the requirement of the indoor temperature in winter compared to that of the traditional solid brick wall, the indoor environment of composite wall has a good thermal comfort.

关键词： Ennergy Efficiency Building Envelope Wall Thermal Insulation Winter Thermal Performance

作者: Gui-bing LI Yu-gang GUO Lai-li WANG

作者单位: School of management sci. & eng., Shandong institute of business and technology, Yantai, 264005, Chi International business college, Shandong institute of business and technology, Yantai, 264005, China Yantai Engineering & technology college, Yantai, 264006, China

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 573-576

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）