Motor Heat Generation Calculation

You need to know the motor efficiency (η). Heat rejected from the motor will be (1 - η) * 440 hp * (746 W/hp) * (3.413 BTU/W) - however, this does not include any heat rejected during work done by the driven equipment within the space. For such a large heat load, the motor most likely utilizes a cooling water source.

It is simple. The entire inductive reactance power will be converted to heat.

The I^2r loss heat to be added.

thanks,

dhayanandhan.s,

india

A good place to start is the nameplate on the motor, it should list the efficiency.

Perhaps the below standard could help you, I usually do the calculations for the ventilation of engin rooms with this ISO

ISO 8861 Standard

Shipbuilding – Engine-room ventilation in diesel-engined ships – Design requirements and basis of calculations