Psychro-Btu-Calculator


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Entering Dry Bulb °F Exiting Dry Bulb °F
Entering Exiting
Altitude in ft.    

To calculate system btu's enter 

     

Entering Air

Leaving Air
Dry Bulb F°

Dry Bulb F°

Wet Bulb F°

Wet Bulb F°

Dew Point

Dew Point

Relative Humidity

Relative Humidity
Grains /lb.

Grains / lb.

Sat. vapor press. psia

Sat. vapor press. psia

Enthalpy   btu/lb.

Enthalpy   btu/lb.

** The two choices for CFM types are Actual & Standard. Actual(ACFM) is the actual amount of air entering the system
regardless of temperature, humidity or altitude. Standard(SCFM) is air measured at sea level, 70° with 0% humidity.
The calculations are based on Standard air so Actual CFM is automatically converted to Standard CFM for those purposes.
If SCFM is chosen then the ACFM shown is the actual amount of airflow needed to achieve the proper mass flow rate.