离心通风机环流系数的验算与讨论

Check and Disccusion of Circulation Coefficient For Centrifugal Fan

探讨了依据通风机实际性能和特性尺寸计算环流系数实际值的公式。利用该公式对近40种不同型号的离心通风机的环流系数实际值进行了验算。并与半理论、半经验公式的计算使作了比较。在误差较小时，对某些公式的应用范围和个别系数提出了新的建议。

Formula of circulating coefficient actual value calculated according to fan actual performance and characteristic dimension is discussed. Check is carried out to circulating coefficient actual value for near 40 different types of Centrifugal fan by this formula,and comparison is performed with the calculating value of semi theoretic and semi- empirical formula. New proposal is raised for application and individual coefficient of some formulae when the error is smaller.