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焊接厂房置换通风气流组织试验研究 马相雪. 李灿 湖南工业大学土木工程学院 摘 要 ：对某置换通风焊接整体厂房进行了气流组织试验，在正常工况下测试了温湿度、臭氧浓度、室内压强、室内风速、送风风速、回风口风速等数据，并采用发烟法进行了流场显示，发现该厂房采用置换通风方式温湿度分布均匀，臭氧浓度、室内压强、工作区风速均达到设计要求，但发烟法试验结果显示，没有形成良好的回风效果，这与回风管水力失调有关，表明调节对于置换通风厂房的气流组织十分重要。 关键词 ：试验 气流组织 焊接厂房 置换通风 Test of Air Distribution of Displacement Ventilation in Welding Plant Abstract: An air distribution test was carried out in a welding plant with displacement ventilation systems. Measurements of temperature, humidity, ozone concentration, indoor pressure, indoor wind speed，supply air velocity and return air velocity, were done under a normal working condition, and a flow visualization was carried out by using smoke fuming methods. Result shows that the temperature and humidity are well-distributed in this displacement ventilation plant, and ozone concentration, indoor pressure and wind speed in the work area all meet the design requirements. But the result of smoke fuming methods shows that the return air is poorly transferred through the systems, and it is mainly because of hydraulic disordeer of return air duct. It shows that the hydraulic adjustment is very important for air distrubution of displacement ventilation systems. Keywords : test; air distribution；welding plant；displacement ventilation