Seeking accurate measurement of component heat generation
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I have a water-cooling plate with heat-generating components, and I want to determine the amount of heat they generate. To do this, I simply create a circulation system consisting of a water pump, the water-cooling plate, and coolant; by measuring the temperature rise of the coolant under thermal equilibrium conditions, I can calculate the power generated by heat. I bought PT100 sensors and a PID temperature controller; I use them to measure the temperatures at the inlet and outlet of the water cooling plate in order to calculate the heat generation. The problem is that there is a large discrepancy between the actual values and the theoretical values, due to the low precision of the PT100 sensors and the temperature controller. I’m looking for ways to improve the accuracy of these measurements; I would appreciate any suggestions from everyone.
I have thought about adding a throttle valve to the circulating water circuit, using the throttle valve to control the flow rate and thereby regulate the final temperature of the coolant; errors could be corrected through multiple measurements, but this still cannot improve the accuracy of temperature measurement itself