Measuring Air Flow - Static / Capacity & ECM Motors Part 1 w/ Jim Bergmann
About this episode
In this two-part podcast series, Jim Bergmann talks about measuring airflow in HVAC systems. He covers a wide range of airflow measurement instrumentation and readings.
In this first episode, Jim covers ECM motor considerations, delivered capacity, laminar flow, and more.
In the HVAC industry, many techs confuse static pressure for airflow. Although you need static pressure to have airflow, it is NOT airflow and can fluctuate rather wildly depending on the duct conditions.
Static pressure is an indirect airflow measurement. Airflow is actually a measurement of velocity (such as with pitot tubes) that you then convert to a volume measurement (CFM).
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