Airflow conversion question

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01-07-02, 02:37 PM

Gearhead

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Airflow conversion question

Does anyone know a formula that can convert CFM at a given temp and pressure to Lbs/min? I'm monkeying around with excel and don't want to bother with a conversion chart if possible.
Thanks for any help.
Don.

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01-07-02, 03:05 PM

Jedon

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Google says:
When comparing to a compressor flow map that is in
Pounds per Minute (lbs/min), multiply CFM by 0.069 to convert CFM to lbs/min.

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01-07-02, 04:09 PM

Orange!FD

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For Temp in degrees F, and Pressure in PSI, you can use this:

lb/min = CFM * Pressure * 2.7 / (Temp + 460)

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