Requirements for wind speed of kitchen exhaust: The suction speed of range hood is generally 0.5m/s, and the throat is 5m/s. The wind speed passing through the pipeline is generally not less than 10m/s, and is generally 10m/s ~ 65438+6m/s, so as to prevent oil fume from sticking to the pipeline due to too low wind speed. The greater the wind speed in the pipeline, the greater the noise and vibration. However, the air supply speed of the pipeline can be lower, and the wind speed behind the fume hood can be higher than that in front of the fume hood.

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