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Anonymous users2024-01-24The wind pressure of the fan is used to overcome the resistance of the system.
So what you need to know is the specific friction and length.
In order to accurately calculate the resistance, the specific friction value needs to be obtained.
If estimated, the wind speed of the general kitchen exhaust smoke pipe is 10m s, and the specific friction resistance is 2 4Pa m.
Specific friction resistance x length x additional coefficient) = 240Pa (external static pressure) of the selected fan: full pressure of the wind outside the machine + resistance loss of the fan itself, so the full pressure of the fan is about 350Pa, which is enough.
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Anonymous users2024-01-23400X400x4o = 6400000 cubic meters.
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Anonymous users2024-01-22Summary. The wind pressure of the fan is used to overcome the resistance of the system.
So what you need to know is the specific friction and length.
In order to accurately calculate the resistance, the specific friction value needs to be obtained.
If estimated, the wind speed of the general kitchen exhaust smoke pipe is 10m s, and the specific friction resistance is 2 4Pa m.
Specific friction resistance x length x additional coefficient) = 240Pa (external static pressure) of the selected fan wind full pressure external static pressure + fan resistance loss.
Therefore, the full pressure of the fan is about 350Pa, which is enough.
400400 pipe 40 meters long need how much air pressure kitchen smoke exhaust
Hello, I have seen your question, and I will answer it for you immediately, please wait for a while The number of wind pressures of the wind turbine is only used to overcome the resistance of the system. So what you need to know is the specific friction and length. In order to accurately calculate the resistance, the specific friction value needs to be obtained.
According to Bi Duanguo's estimation of the first training, the wind speed of the general kitchen exhaust fume pipe is 10m s, and the specific friction resistance is 2 4Pa Specific friction resistance x length x additional coefficient) = 240Pa (external static pressure) The selected fan is full pressure External static pressure + fan resistance loss, so the full pressure of the fan is about 350Pa or so.
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