Archon's Psychrometrics Program

This program provides Psychrometric properties of air given two properties as input values at a known altitude (or atmospheric pressure). The properties are determined using the ideal gas law for the behavior of air. Once the properties are determined, the point is indicated on the Psychrometric chart. Process lines can be connected between any two know points, this will provide the user with the differences in moving from one point to the next. Additionally, this program will allow the user to perform some basic HVAC calculations that depend on psychrometrics.

Price:    $40.00 US

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Archon's Psychro Program Upgrade Info

Psychro version 5.6 revisions

*Version 5.6 corrected the calculation for the moist air cooling water mass flow. The previous version had a incorrect conversion factor so that mass flow rate in the Metric unit system was incorrect.

Psychro version 5.5 revisions
*Vapor pressure is now calculated as Relative humidity times the saturation pressure of the dew point temperature.
*Wet Bulb/Dew Point Input and Wet bulb/Relative Humidity input iteration routines were refined to produce faster, more accurate results.
*A typo in the calculation of Humidity ration was corrected to produce more accurate results.