Factors affecting clear height of mechanical smoke exhaust system

 Based on the calculation process analysis of the maximum allowable smoke exhaust volumet for single exhaust inlet, discusses the influence of the smoke temperature on the clear height, and deduces the relationship of the difference between the mean temperature of the smoke layer and the environmental temperature and the design clear height in a certain smoke exhaust space. Presents some typical cases. Estimates the design clear height limit when the control temperature of the smoke layer is no more than 280 ℃ at different heat release rate.