Quote Originally Posted by iandh View Post
Yeah, I think you could get a good measurement by taking a fixed amount of water such as 1 gallon and running it for a set amount of time in a fixed ambient temperature and then calculate heat dump based on the temperature rise vs. heat dissipation. You would have to heat the water up and then let it cool back down to calculate its dissipation though I think.

My boss used to teach thermodynamics at UCLA a long while ago so I am sure that I could get some methods and equations from him if you want.

Yeah, I know it's a simple matter of getting unit's straight using the heat capacity of water.

Water has a heat capacity of 4.184 J cm-3 K-1, so it should just be a matter of solving the units over to watts and time, gallons, and Celcius. Maybe I'll make a quick run on this pump before I send it back and just measure temperature change over a unit time along with the volume.