Function prop = mollier_humidairprop
returns a struct containing information on
humid air properties.
It is organised in this way:
prop.Ra = 287.10;
% specific gas constant of dry air,
% in J/(kg K) (value from Glueck 1991,
% table on page 47).
prop.Rv = 461.40;
% specific gas constant of water vapour,
% in J/(kg K) (value from Glueck 1991,
% table on page 47).
prop.Ma = 28.96;
% molar mass of dry air, in kg/kmol
% (value from Glueck 1991, table on
% page 47).
prop.Mv = 18.02;
% molar mass of water vapour, in kg/kmol
% (value from Glueck 1991, table on
% page 47).
% note that the ratio delta = Mv/Ma = Ra/Rv
% must be calculated by the calling function!
prop.ps_fun = "mollier_ps_magnus";
% m-file name for function returning ps
% for given T and pb.
prop.Td_fun = "mollier_Td_magnus";
% m-file name for function returning Td
% for given pv and pb, or for given T,
% F and pb.
prop.pbstandard = 101325;
% standard atmospheric pressure, or
% standard total air pressure, in Pa
% (value from http://en.wikipedia.org/wiki/Pascal_%28unit%29 ).
prop.cpa = 1.01e3;
% specific heat capacity of dry air at
% constant pressure, in J/(kg K) (value
% from Glueck 1991, form. 2.24).
prop.r0 = 2501.0e3;
% specific heat of vaporisation of water
% at the triple point, in J/kg (value
% from Glueck 1991, form. 2.25).
prop.cpv = 1.86e3;
% specific heat capacity of vapour at
% constant pressure, in J/(kg K) (value
% from Glueck 1991, form. 2.26).
prop.rhoref = 1.293;
% density of dry air at Tref and pref,
% in kg/m3 (value from Jannot 2005).
prop.Tref = 0;
% reference temperature for rhoref, in
% degrees centigrade (value from Jannot
% 2005).
prop.pref = 101325;
% reference total pressure for rhoref,
% in Pa (value from Jannot 2005).
References:
Glück, Bernd (1991). Zustands- und Stoffwerte --- Wasser, Dampf,
Luft --- Verbrennungsrechnung. 2. bearbeitete und erweiterte
Auflage. Berlin: Verlag für Bauwesen GmbH.
(Website visited in 2014: http://berndglueck.de/stoffwerte.php )
Jannot, Yves (2005). L'air humide.
(Website visited in 2017: http://www.thermique55.com/principal/airhumide.pdf )
(c) 2026 fabien van mook
2026.08.20 release of this file within package "fvm-mollier" under GNU GPLv3+
