There is an important DeltaT that is not being considered here. That is the differential between coldplate/heatexchanger temp and temp of the water in contact with the heat exchanger. Greater efficiency in thermal transfer would coincide with a higher DeltaT here would it not?
This would mean that tec power would have to increase with increased flowrate to maintain an equal deltaT here when changing flowrate. If flowrate were reduced then the opposite would be true - tec power would have to be reduced to maintain an equal DeltaT.
Does this shed light on the benefit of a lower flowrate in a tec chiller?
Remember the coldness of the coldplate is not cooling the water, the heat is traveling through the coldplate and on up through the tec.
|