The psyhcrometric properties of air are calculated based on the ASHRAE 2013 handbook of fundamentals (SI version). References to ASHRAE handbook are given in the m-file for easy referencing. Atmospheric pressure of 101.325kPa is considered as default which can be changed by passing the atmospheric pressure value as the last two input parameters i.e. Psychrometericnew ('T',24,'phi',50,'P',101.325)
The Psychrometricsnew.m has the ability to calculate moist air state (Tdb, w, phi, h, v, Tdp, Twb) through input of any of the following functions:
1. Tdb, w 2.Tdb, phi 3.Tdb, h 4.w, phi 5.w, h 6.phi, h 7.Tdb, Twb 8.w, Twb 9.phi, Twb
A psychrometric chart can be plotted using psychplotting.m. The default ambient pressure is taken as 101.325kPa in psychplotting.m. This can be changed by passing the atmospheric pressure value in kPa as the last input parameter.
The program uses label.m for plotting of line labels