Buildings.Utilities.Psychrometrics.Constants

Library of constants for psychometric functions

Information

This package provides constants for functions used in the calculation of thermodynamic properties of moist air.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name Description
T_ref=273.15 Reference temperature for psychrometric calculations
cpAir=1006 Specific heat capacity of air
cpSte=1860 Specific heat capacity of water vapor
cpWatLiq=4184 Specific heat capacity of liquid water
h_fg=2501014.5 Enthalpy of evaporation of water at the reference temperature
k_mair=0.6219647130774989 Ratio of molar weights

Types and constants

  constant Modelica.SIunits.Temperature T_ref = 273.15
    "Reference temperature for psychrometric calculations";
  constant Modelica.SIunits.SpecificHeatCapacity cpAir=1006
    "Specific heat capacity of air";
  constant Modelica.SIunits.SpecificHeatCapacity cpSte=1860
    "Specific heat capacity of water vapor";
  constant Modelica.SIunits.SpecificHeatCapacity cpWatLiq = 4184
    "Specific heat capacity of liquid water";
  constant Modelica.SIunits.SpecificEnthalpy h_fg = 2501014.5
    "Enthalpy of evaporation of water at the reference temperature";
  constant Real k_mair = 0.6219647130774989 "Ratio of molar weights";