Psychrometric Calculator (SI Units)
The Psychrometric Calculator is used to compute the thermodynamic properties of moist air. These properties are used by mechanical engineers to design Heating Ventilating & Air Conditioning (HVAC) systems and processes. The program is based on the procedure outlined in the 1997 ASHRAE Fundamentals Handbook.
For systems running Windows 95/98/ME/NT/2000/XP, it is available with and without the JAVA Virtual Machine, if you have the JVM installed download psychro.exe(2,191KB). If you don’t have the JVM installed, download psychro.exe(8,126KB).