Arkansas HVACR NewsMagazine May 2021

S tate, National, Chapter News Tech News

The point of the study was all about heat transfer and in real life if we control for ambient conditions all we would need to do it measure head pressure, clean the coil, let it dry and measure head pressure again. If it goes down then more heat transfer is occurring (again, controlling for changes in ambient conditions and indoor load). For fun, I would encourage you to try the same tests and let me know your findings. I used MeasureQuick, a Redfish meter and Fieldpiece Joblink probes to collect the data but you could do it with any accurate modern digital instruments. Just make 100% sure the coil is dry after cleaning or you will get false measurements.

If you find a system that doesn’t improve, or gets worse it would be great to know the “why” behind that example by reviewing the application and data. — Bryan

Bryan Orr, HVAC School ( Founder / Podcaster / Dad of 10 ) Bryan Orr is a lifelong learner, proud technician and advocate for the HVAC/R Trade

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