Revised 09/24/97 pm

The formulations used here to calculate moist air properties are based on perfect gas relations published in 1989 ASHRAE Fundamentals Handbook, which should be accurate. Nevertheless, It is strongly recommend that you to compare the results calculated by this worksheet with a psychrometric chart. There is no error checking so you should use reasonable input values. Do not hesitate to notify if you find any bugs.

Psychrometric Calculations
Unit Chosen: SI IP
Parameter Name Value Unit
Dry Bulb Temp.:
Wet Bulb Temp.:
Relat. Humidity:
Dew Point Temp
Atmospheric Press
Sat. Vapor Press.
Partial Vapor Press.
Humidity Ratio
Specific Volume

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