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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!



  • BillW
    BillW Member Posts: 198

    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.
  • Wayne_16
    Wayne_16 Member Posts: 130
    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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