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    formula for calculaing related air humidities (3 Posts)

  • N/A November 2, 2009 @ 10:27 AM

    formula for calculaing related air humidities

    70* f with 50% humidity cooled to 60*f air. what is the humidity @ 60*f after the air is cooled from 70*f?
    i hope theres a simple formula!
    thanx
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  • BillW BillW November 2, 2009 @ 10:41 AM
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    Formula

    Unfortunately, I don't have the formula, or know  if there is one.  Try the ASHRAE or ACCA website, they, if anyone, they would have it.  Sorry I couldn't help.
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  • Wayne Wayne November 2, 2009 @ 12:15 PM
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    psyhrometrics chart

    Plot the existing wb, db, rh, on a psyhrometrics chart and compare to the new wb, db, and rh.  This will tell you the new conditioned air values.

    Thanks,  MN Wayne
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