摘要
对中庭中和面的高度随中庭天窗的开启面积的变化规律进行了研究,并且对如何充分利用中庭烟囱效应有效诱导自然通风进行探讨。通过对一住宅建筑中庭改变其天窗开启面积各工况下的自然通风进行CFD数值模拟,分析中庭中和面高度变化规律;基于以上研究,延伸中庭高度,进一步探讨如何利用中庭烟囱效应有效诱导自然通风。研究表明:随着天窗开启面积的增大,中庭中和面高度随之升高,一般每增加20%左右的天窗开启率,中和面上升一个楼层高度(3m),到天窗开启面积达到76%左右时,中和面上升至建筑最顶层;随着天窗开启面积增大,自然通风效果趋向良好;通过延伸中庭高度,明显降低了顶层建筑的温度,提高了室内热舒适性。
Change rule of atrium neutral plane according the change of louver area was studied and use of stack effect to induce the natural ventilation effectively was explored. The natural ventilation of residential buildings with louver area changed was studied to analyze the Change rule of atrium neutral plane, using CFD method; Based on the foregoing study, the method of use of stack effect to induce the natural ventilation effectively was explored, by extending the height of atrium. The result suggested that neutral plane height rose with the increase of louver area, and the increase of 20% louver area caused one storey（3m） rise of neutral plane; when the louver area rose to about 76%, the neutral plane went up to the top of the building, then no neutral plane height change with the increase of louver area. Generally, the effect of natural ventilation was improved with the increase of louver area; natural ventilation was induced effectively by the extended height of atrium, which caused the decrease of temperature for the top storey of building and improvement of thermal comfort.
出处
《制冷与空调（四川）》
2012年第6期545-549,共5页
Refrigeration and Air Conditioning
基金
河南省科技攻关基金项目(102102210171
082102240087)
关键词
中和面
中庭
诱导自然通风
neutral plane
atrium
induced natural ventilation
