Performance research on mechanical exhaust smoke volume in building corridors

Analyses the properties of fire smoke flow by network model software, with the staffs in fire building as the protected object, and gives three fire danger criterion standards under the network model condition, which can be used to determine the available safety egress time（ASET). The required safety egress time (RSET) can be counted by empirical data. Compares ASET and RSET to determine the corridor exhaust smoke volume. An example shows that exhaust smoke volume is different under different fire source conditions when other conditions are the same, and that the optimum exhaust smoke volume  is 72 m³/ (m²·h) under the condition of fire source with higher strength such as 250 kW/m².