Simulation Of Air Environment And Evaluation Of Quality In Highway Toll Station

Manual acting charge is used widely on internal road. Large car flux and serioussuperscale of gas when the car is waited or started result in that bad contamination and theabominable air quality. It is harmful to health to cause occupational disease. Personalizedventilation technology can be used to improve air quality in highway toll station. According tonumerically simulated air quality with personalized ventilation and optimized air supplyparameter, we can get the design gist.Physical and mathematic model are founded about the highway toll station withpersonalized ventilation to simulate and evaluate air quality. A comparion betweensimulationed result and test result validate correstness of mathematic model and calculationalmethods; different shape and location of opening and parameter of the fresh air supply whichcan affect temperature field, velocity field, mean age of air, PMV of perple are simulated toget the best air supply scheme and parameters. The results suggest that the opening ofrectangular bar can satisfy the demand of comfort degree with 30m3/h of the air supply and 22℃of the temperature; The changing of the initial temperature of toll station will not affect thecomfort degree of working perple; the increasing of air conditioning temperature will notaffect the air flow and mean age of air around the person, but can improve the temperature tocause the changing of comfort degree.