地铁地下车站公共区卫生间通风气流组织优化研究
Optimization of ventilation air distribution of toilets inpublic areas of subway underground stations
摘要：
针对地铁地下车站公共区卫生间通风气流组织进行了数值模拟与优化研究,分析了排风方式、换气次数、下排风口高度、补风形式对污染物的影响。研究表明,卫生间采取自然进风、局部机械下排风、下排风口高度0.3 m、换气次数20 h-1可有效降低室内污染物水平,提高室内空气品质。通过现场测试验证了实施效果。
关键词：地铁;地下车站;卫生间;通风;气流组织;排风方式;换气次数;下排风口高度
Abstract：
A numerical simulation and optimization study on the ventilation air distribution of toilets in the public areas of subway underground stations is carried out, and the influences of air exhaust mode, air exchange rate, lower air outlet height and make-up air form on pollutants are analysed. The study shows that the use of natural air supply, local mechanical lower air exhaust, lower air outlet height of 0.3 m and air exchange rates of 20 h-1can effectively reduce indoor pollutants and improve indoor air quality in the toilet. The implementation effect is verified by field test.
Keywords:subway; underground station; toilet; ventilation; air distribution; air exhaust mode; air exchange rate; lower air outlet height