This paper analyzes in detail the design of anti-smoke stair-half,natural smoke exhaust windows in atria and combined atria of high-rise civil buildings,and puts forward some modus operandi.

Comparison of different methods of ventilation and smoke exhaust in underground parkings;

Analysis on ventilation and smoke exhaust for civil air defense underground garages;

Discusses on ventilation and smoke exhaust system design for basement of highrise civil buildings;

In the article we not only analysed the theory of flue gas condensation, but also studied the theory that the various parts of flue gas was absorbed and purified in the course of the flue-gas condensation.

Aimed at the fact that the wall temperature of heat exchanger is lower than the dew point of flue gas, the thermal energy utilization system for flue gas of positive draft gas boiler is proposed.