Fan Efficiency

Fan efficiency, abbreviated as \(\eta_f\) (Greek symbol eta), a dimensionless number, is the ratio of input and output power.

 

Fan Efficiency formula
\(\large{ \eta_f = \frac{ P_{out} }{ P_{in} } }\)
Symbol	English	Metric
\(\large{ \eta_f }\)  (Greek symbol eta) = fan efficiency	\(\large{ dimensionless }\)
\(\large{ P_{in} }\) = input power	\(\large{ W }\)	\(\large{ W }\)
\(\large{ P_{out} }\) = output power	\(\large{ W }\)	\(\large{ W }\)