Excuse me, how to calculate the size of air duct and fan used in the smoke exhaust system of hotel kitchen?

Kitchen smoke exhaust is generally calculated according to the projection area of the burner and range hood. According to the burner is generally in 2500~3000m? /h Calculation of one burner; According to the projected area of the hood and the wind speed of the projection surface of 0.5 ~ 0.8m/s, the calculated large exhaust air volume is the design exhaust air volume. Calculate the cross-section size of the pipeline by using the designed exhaust air volume, and know and choose the fan.

Smoke control and exhaust pipes: usually closed, and will be automatically opened through alarm signal linkage in case of fire.

Fireproof air duct: normally open at ordinary times, and automatically closed when the air duct is higher than 70 degrees.

Extended data:

Smoke control and exhaust system: it consists of air supply and exhaust pipeline, tube well, fire damper, door switch equipment, air supply and exhaust fan and other equipment. What is the setting form of smoke prevention system? Stair positive pressure

The smoke exhaust volume of mechanical smoke exhaust system is directly related to the smoke prevention zone. Smoke prevention facilities in high-rise buildings should be divided into mechanical pressurized air supply smoke prevention facilities and natural smoke extraction facilities that can open windows.