EK CoolStream 360

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 washbasin and down the drain.

Pressure Drop Data

Leading into the data table below, I prefer to see nothing extraordinary when running pressure drop, because standout results here usually mean high restriction and some caution when selecting the other components for your loop. However, the EK CoolStream 360 comes in with average restriction. Those two rows of tubes definitely have an impact on the pressure drop tests, it also helps that each tube is 2mm wide giving large flow paths for the U flow configuration.

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 comparison. The Swiftech MCR320 represents what I consider average restriction, but even average restriction for a radiator will mean very little impact on the flow rate of your loop. Now if you want to see how the EK CS3C60 measures up against other triples, well you’ll have to see that in the Triple Radiator Comparison which will be updated shortly after this review goes live. We now have 10 triple radiators represented in the comparison.

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 CS360 is very close to the MCR320 in terms of restriction. I consider the MCR320 as average restriction, but that is because we have the PA120.3 which is an extremely low restriction radiator and those numbers are what radiators will need to achieve or close to it in order to qualify as low restriction. Rest assured, the CoolStream 360 will not be the component eating the flow rate for your loop.

With pressure drop/restriction data covered, time to get to the meat of the review and cover Thermal results. However, we need to take a pit stop 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.

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