有關(guān)風(fēng)扇的各種定律和公式：

各種參數(shù)：

D = Fan size風(fēng)扇直徑mm
N = Rotational speed轉(zhuǎn)速 RPM
P = Pressure風(fēng)壓
Q = Volume flow rate風(fēng)量 CFM
W = Power功率
ρ = Gas density空氣密度

Fan Law 1風(fēng)量與轉(zhuǎn)速，直徑的關(guān)系

The first fan law relates the airflow rate to the fan rotational speed: Volume flow rate, Q, is directly proportional to the fan rotational speed, N.

同一個風(fēng)扇，風(fēng)量與轉(zhuǎn)速成比例變化。

Fan Law 2風(fēng)壓與轉(zhuǎn)速，直徑的關(guān)系

The second fan law relates the fan total pressure or fan static pressure to the fan rotational speed: Total or static pressure, P, is proportional to the square of the fan rotational speed, N.

同一個風(fēng)扇，風(fēng)壓與轉(zhuǎn)速的平方成比例關(guān)系。

Fan Law 3功率與轉(zhuǎn)速，直徑的關(guān)系

The third fan law relates the total or static air power (and the impeller power), W, to the fan rotational speed: Power, W, is proportional to the cube of the fan rotational speed, N.

同一個風(fēng)扇，功率與轉(zhuǎn)速的立方成比例關(guān)系。
聲功率與轉(zhuǎn)速，直徑的關(guān)系

參考鏈接

http://www.hse.gov.uk/pubns/top10noise.pdf
http://www.formfactors.org/developer%5Cspecs%5Cacoustic_overview.pdf