Thermochill PA140.3

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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 wash basin in the mud room 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.

I had no idea on how pressure drop would turn out, would the added tube length result in higher restriction or would the extra tubes make up for the additional length… I was not sure one way or the other. The inlet is on the left so the inlet is on the 7 row side and outlet using 6 rows. As it turns out, the restriction is pretty much the same. The ThermoChill PA series is the lowest restriction radiator we’ve tested so I wasn’t expecting anything crazy, I guess the extra row of tubes cancels out the added length resulting little to no additional pressure drop over the PA120.3.

Pressure Drop Data Table

With the pressure drop numbers being nearly identical to the PA120.3 I decided not include the data points and trendline for comparison, just the PA140.3 data points and trendline in PSI and kPa.

PSI Drop per GPM of flow

kPa drop per LPH of flow

Again, only PSI and kPa for pressure drop. I’ve dropped the mH2O per LPM chart, 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. With pressure drop/restriction covered its time to take a look at heat dissipation. Before we can dive into thermals, we’ve got to take a stop at the Thermal Test Spec and Methodology. 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 as part of the review content. So much for trying to save on your scrolling finger. On to page 3…

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