A Study on Influencing Factors of Night Ventilation Efficiency

摘要：

Night ventilation is one of the effective energy-saving measures for cooling buildings.Three factors that affect night ventilation efficiency include climatic factors,architectural characteristic and ventilation volume.By using the numerical simulation software-Dest,the data of room temperature under the different climatic conditions are brought into comparison first.It indicates that night ventilation is especially suitable for the regions with great temperature difference between the day and the night.Then the room temperatures are compared under the different building materials conditions.It shows that the greater thermal resistance coefficient of building envelope,the smaller heat transfer coefficient,and the more obvious ventilation effect.Finally,through the simulation of different ventilation volumes,it can be concluded that air exchange frequency is not proportional to ventilation efficiency.The study shows that night ventilation can reduce the indoor temperature during the day,delay the turn-on time of air conditioners and reduce the energy consumption of air conditioners during the day on the premise that the requirements for comfort and improving indoor air quality are satisfied.

关键词： Night ventilation Ventilation efficiency Simulation Air exchange frequency

作者: Teng Fu Zhonghua Tang

作者单位: School of Architecture and Civil Engineering,Southwest University of Science and Technology,Mianyang,China

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: 1226-1232

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）