Alternative Energy Forums

Hi all,

I am currently at the start of a 3 year PhD.

The PhD is three fold, i.e. looking at re-using waste materials, energy and water to create a sustainable environment, with the event of reducing virgin materials and carbon emission through recycling.

The first area that I am considering is the concept of heat rejection from motors, chillers, pumps etc (anything that gives off heat)

I am under the impression that if a 10kW motor operates at 90% efficiency, then the heat rejection would be 1kW and the output would be 9kW.

I am interested in the temperature profile whilst such a device is in operation (i.e. full load Temp = 100DegC, Half load Temp = 70DecC etc)

I know little about calculating the heat (TEMPERATURE) rejected from such products. I stress, temperature (DegC) not load (kW).

Is this calculable or does rigorous testing under factory conditions required?

To sum the above up.

I want to map the heat rejection (DecC) against load profile

Any takers?