How Can I Test the Cooling Capacity of My Liquid Cooler?

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SUMMARY

To test the cooling capacity of a liquid cooler, circulate coolant through a reservoir with a heating element, applying power until the cooler reaches a predetermined temperature. Calculate wattage using the formula volts multiplied by amps. An alternative method involves running hot water through the cooler and measuring the steady-state input and output temperatures along with the flow rate. The cooling capacity can be determined using the formula: Capacity of cooler = Specific heat capacity of water * Temperature difference * flow rate.

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  • Understanding of liquid cooling systems
  • Knowledge of electrical measurements (volts and amps)
  • Familiarity with thermodynamics concepts, specifically specific heat capacity
  • Experience with flow rate measurement techniques
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jwells
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I've created a small liquid cooler and would like to test for it's cooling capacity. The only way I know of doing it is to circulate the coolant into a small reservoir with a heating element and apply power adding heat till the cooling unit is maxed out holding at a predetermined temperature. Then calculating the wattage by volts * amps. The test equipment would be well insulated to minimize transient heat. Is there a better way or off the shelf apparatus to do this?
 
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You could just run hot water from a tap/faucet through the cooler. To calculate the capacity in Watts you would need to measure the steady state input and output temperatures and the flow rate.

Capacity of cooler = Specific heat capacity of water * Temperature difference * flow rate

Edit: Ideally the input water temperature would be close to the temperature you expect the cooler to normally operate at in the real system.
 

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