The public washroom in railway station buildings has problems such as high air change rate,high pollutant concentrations and high ventilation energy consumption.Taking a public washroom in a railway station building as an example,the CFD numerical simulation method is used to analyze the pollutant removal effects of three ventilation schemes:lower nearby exhaust and upper exhaust,top downward supply and lower nearby exhaust,top middle supply and lower nearby exhaust.The results show that when using top middle air supply and bottom nearby exhaust,the concentration of pollutants in the bathroom is the lowest.Pollutants at heights of 0.9 m and 1.5 m in the bathroom can be effectively eliminated,and the dissatisfaction rate is less than 0.5%.Optimization analysis is conducted on the top middle air supply and bottom nearby exhaust scheme.Under the premise of ensuring effective pollutant removal,it is found that the minimum air change rate can be 10h-1,the ratio of air supply to exhaust should be greater than 60%,and the air supply speed should be less than the exhaust speed.
关键词
公共卫生间/通风模式/气流组织/污染物
Key words
Public washroom/Ventilation mode/Air distribution/Pollutant
维普
万方数据