Take a large space building as an example,and based on FDS simulation which considers the descending characteristic of smoke and the characteristic of the temperature field,the vent location,vent number and the air velocity at the vents as the most important parameters for the design of smoke ventilation system are analyzed.

The paper mainly introduces the way to calculate the smoke vent area and the wind amount at the smoke vent of the natural smoke exhausting system of the stage.

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.