Improvement of ventilation and smoke control system design for traditional underground garage
1. garage air supply system is also used as air supplement during smoke exhaust
2. the smoke exhaust system only shares the main engine and main pipe section with the exhaust system, and then has two branch roads. The smoke exhaust fire damper (280 ° C, normally closed) is set on the smoke exhaust branch road, and the smoke control fire damper (70 ° C, normally open) is set on the exhaust branch road. In case of fire, the conversion from the exhaust system to the smoke exhaust system can be realized only by opening and closing these two valves in the fire control. Thus, the number of electric control valves is reduced, the project cost is reduced, and the stability of the system is improved. Compared with the traditional system, smoke exhaust and air exhaust are provided with branch pipes respectively. Since the distance between the smoke exhaust outlet and the smoke exhaust point is no more than 30m, the smoke exhaust branch pipe will not be too long, and a higher flow rate can be used for smoke exhaust, and the section size of the smoke exhaust pipe can be made smaller.
地下车库设的注意事项 Considerations in the design of underground garage
As the underground garage itself does not have high requirements for noise, the size of air duct shall be reduced as much as possible to reduce the cost and save space.
Summary: as the vehicle discharging hazardous substances is a moving object, and the tail gas containing most of the hazardous substances is a high-temperature jet, it is impossible for the hazardous gases to stay stably in the lower part of the garage. Therefore, the daily exhaust of the garage is discharged from the upper part, and it is feasible to place all air vents in the upper part of the garage. At the same time, the branch pipe is equipped with a smoke exhaust fire damper that can close automatically when the temperature exceeds 280 ℃, and the fire smoke exhaust air duct system can be fully integrated with the daily exhaust air duct system.
The above is a detailed introduction to the kitchen smoke hood of Jinan hotel. I hope it can help you If you have any questions, please contact us We will provide you with professional service http://cqlej.com