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Performance Characteristic Of Centrifugal Fan
May 27, 2017

Centrifugal fan is a variable flow constant pressure device. When the speed is fixed, the pressure-flow theory curve of the centrifugal fan should be a straight line. Due to internal loss, the actual characteristic curve is curved.

The pressure generated by the centrifugal fan is affected by the change of inlet temperature or density. The maximum inlet temperature (lowest air density) is the lowest when the inlet pressure is given. For a given pressure and flow characteristic curve, there is a power and flow characteristic curve. When the blower is running at constant speed, the required power increases with the inlet temperature decreasing for a given flow rate.





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