An interactive and intelligent psychrometric chart program designed for HVAC/R engineers. It helps engineers calculate, analyze, draw, edit, print, and export the conditions and processes of moist air quickly and accurately. The psychrometric algorithms are based on Hyland and Wexler`s reports published by ASHRAE, which treat dry air, water vapor and moist air as real gases, rather than ideal gases.

A convenient, precise and powerful tool for HVAC&R engineers. This psychrometric chart is perfectly consistent with all ASHRAE charts of No.1~7(SI Units) and No.1~5(IP Units). Features include: High precision calculation; Metric(SI) and English(IP) units support; Convenient chart operating; Powerful process calculating; Include thermal and adiabatic effect calculation for air/liquid duct.