Koolance CU1020H

Pressure and Flow Results

When building your loop there should be a list of things that come to mind, flow and pressure should be near the top of that list. Pressure drop is the measurement of inlet pressure minus outlet pressure, or the pressure loss of flow through the radiator.

Test Method

I have the line from my washbasin in the mudroom hooked up to the gate valve controlling flow, which then runs into the King flow meter. The bottom port on the flow meter is the inlet, top port is the outlet. The outlet runs down to the Delrin T which I have Bitspower 1/2″ barbs on for the normal flow, and the negative pressure line connects via an EnzoTech 1/4″ fitting. After the negative pressure T, the component in testing is attached. I always use Bitspower 1/2″ fittings, that keeps everything on a common test platform…well from a fitting perspective anyhow. At the outlet of the component is the positive pressure T fitting, again with Bitspower 1/2″ fittings and an EnzoTech 1/4″ fitting for the pressure line. The tubing the runs back into the wash basin and down the drain.

Pressure Drop Data

Scoping out the data table below, you see that the CuH comes in with what I consider “average” restriction. This was good to see after the high pressure drop numbers on the Cu1020V. The CuH follows the design we have come to see as the norm, sporting extra thickness and two rows of large tubes. This results in good restriction numbers, again “average” for radiators.

For many the data tables just do not equate to meaningful information, so we have some charted data below with the Swiftech MCR320 included for some comparison. Now if you want to see how the CU1020H measures up against other triples, well you’ll have to see that in Triple Radiator Comparison which will be updated shortly after this review goes live. We have 10 triple radiators now to compare.

PSI Drop per GPM of flow


kPa drop per LPH of flow

If you’re a regular reader of skinnee labs than you’ll notice we dropped the mH2O per LPM, which I don’t think it was of much use as LPH seems to be the most widely used and kPa is the metric standard for pressure. It seemed like redundant charting anyhow, but if you want it back let us know.

Now that you have looked at the table and resulting charts, the CU1020H is very close to the MCR320 in terms of restriction. There is some variance to how closely the curves follow each other, thats either the barb ports or my Manometer’s auto-dampening feature wasn’t working as well as it should’ve. Rest assured, the CuH won’t be eating a lot of flow in your loop.

We need to pause the test results momentum here and cover the Test Specification and Methodology that was carried out through thermal testing. I tried just linking to my Test Spec, but a few folks got there panties in a bunch because I linked instead of including it in the page. So much for trying to save on your scrolling finger.

Moving on…

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