Heat Gain from Typical Electric Motors

Related Resources: heat transfer

Heat Gain from Typical Electric Motors

Electric motors create heat energy that may need to be managed in an industrial system. For example, the heat load may be additive in an HVAC system of an enclosure with additional heat energy producing components

Motor Rated, kW	Motor Type	Nominal rpm	Full Load Motor Efficiency, %	Location of Motor and Driven Equipment with Respect to Conditioned Space or Airstream
				A	B	C
				Motor in, Driven Equipment in, W	Motor out, Driven Equipment in, W	Motor in, Driven Equipment out, W
0.04	Shaded pole	1500	35	105	35	70
0.06			35	170	59	110
0.09			35	264	94	173
0.12			35	340	117	223
0.19	Split phase	1750	54	346	188	158
0.25			56	439	246	194
0.37			60	621	372	249
0.56	3-Phase	1750	72	776	557	217
0.75	3-Phase	1750	75	993	747	249

Overall Heat Transfer Coefficient Table Charts and Equation
Combined Overall Heat Transfer Coefficient Equation
Convective Heat Transfer Coefficient - Heat Transfer
Convective Heat Transfer Coefficients Table Chart
Round Duct Heat Transfer Coefficient Wall Temperature Heat Transfer Equation and Calculator
Overall Heat Transfer Coefficient Table Chart
Overall Heat Transfer Coefficient Across Heat Exchanger Tubes Equation

Derived from resources provided by:

ASHRAE Pocket Guide for HVAC, 2013