A Simulation on Water Film over Roofs for the Cooling of Buildings

摘要：

A mathematical model on water film over roofs for the cooling of buildings,which incorporated the dependence of water film solar absorptance on the incident angle and the depth of water film,was proposed in this study to allow a more accurate prediction of its thermal performance under different climatic conditions when applied to different buildings.The results by simulation reveal that water film over roofs can significantly improve the indoor thermal environment of buildings compared to dry roofs,and water spray over roofs has the maximum efficiency for the cooling of buildings.Results also indicate that good heat conduction through roofs can assist the improvement of evaporative cooling effect,and the night ventilation is especially important to improve indoor thermal comfort level under the typical hot dry climatic conditions.

关键词： Water film Evaporative cooling of buildings Numerical simulation

作者: Runsheng Tang I.A.Meir

作者单位: Solar Energy Research Institute,Yunnan Normal University,Kunming,China Desert Architecture and Urban Planning Unit,J.Blaunstein Institute for Desert Research,Ben-Gurion Un

会议类型: 国际会议

会议名称: The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)

会议地点: 大连

会议语种:英文

页码: 54-61

在线出版日期: 2008-07-01（万方平台首次上网日期，不代表论文的发表时间）