Quote:
Originally posted by pHaestus
You will need to measure (at a minimum):
water inlet
water outlet
waterblock baseplate
die
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Although I can see the desireability of knowing all these temperatures and more, I'm not sure I see the "need" to measure more than the die and the water inlet temperature.
Water outlet temperature can tell you the amount of heat the waterblock is dissipating, but assuming a 'perfect' die simulator, I'm not sure it is a necessity. (Obviously this test should be done to measure the quality of the die simulator.)
If it turns out that the die simulator 'leaks' too much heat, it may be desirable to make the delta T between inlet and outlet water the measure of heat transfer. This requires extremely good accuracy and resolution of the temp sensors though. (Not saying that extremely good accuracy is not needed anyway. Just that doing this would make the need greater.) It also requires extremely accurate flowrate measurement.
Alternatively, the water outlet temperature could be ignored (during actual waterblock testing) and 'leakage' of the die simulator characterized. This would require an ambient measurement though. (Since 'leakage' will vary with the deltaT between ambient and die temp.)
I don't see the value of, or a way to practically implement, measurement of the WB baseplate temperature. Few waterblocks of major interest these days are going to allow for placement of a temp sensor in a useful location.