This paper introduces the characteristics of civil air defense works with classified spaces,discusses the smoke exhaust volume and smoke damper according to their actual circumstance,and puts forward the forcible request of supplement air.

With an air-conditioning design in an undermined civil defense works,the issues of air-conditioning unit choice,return air system design,smoke damper setting and automatic control system are analyzed.

To reduce energy consumption and prolong furnace life,numerical simulation in the combustion space of an oxy-fuel glass furnace was carried out,with the flue exhaust close to the feeder and near to the feeder separately.

To reduce energy consumption and prolong furnace life,numerical simulation in the combustion space of an oxy-fuel glass furnace was carried out,with the flue exhaust close to the feeder and away from the feeder separately.

Smoke exhaust effect by different arrangement methods of smoke vent in high-rise building fires

According to the different wind direction,wind velocity and smoke vent area,five fire scenarios are built.

Three-dimensional numerical simulations of both steady and transient states were used to analyze the smoke control effect of fires in a tunnel with smoke extracting gallery,and the spreading characteristics and control effect of the smoke were evaluated for cases of several smoke extracting schemes and different number of smoke draft tuyeres.