期刊论文

Study on Formation and Cooling of Air Film in Long-span Air Condition Factory Building Roof under Natural Wind

中文

建筑热能通风空调

1003-0344

2018

37

3

48-51+78

10.3969/j.issn.1003-0344.2018.03.011

本校为第一机构

在大跨度空调厂房屋顶设置基于科恩达效应的空气诱导器,并在屋顶外表面形成气膜以带走屋顶热量,降低屋顶内外表面温差。考虑了自然风的影响,应用CFD技术数值模拟了不同自然风风速对大跨度空调厂房屋顶的气膜形成和降温效果。数值模拟结果表明,在没有自然风时,随着空气流动距离的增加,空气温度逐渐增加,屋顶外表面温度逐渐增加。有自然风时,在屋顶迎风面上,随着自然风风速的增加,气膜的距离减短,并且在气膜的最末端,屋顶外表面温度最高。在屋顶背风面上,自然风对气膜形成和降温效果几乎没有影响。

An air inducer based on Coanda effect is arranged on the roof of the large span air conditioning plant, and the gas film is formed on the outside surface of the roof, so the heat of the roof was taken away by the air film. Considering the influence of Natural Wind（NW）, the effects of different Natural Wind Speeds（NWS） on the formation and cooling effects of the AF were numerically simulated with CFD technology. The numerical simulation results show that with the increase of NWS, the distance of the AF on the windward side of the roof is sho...