blockSpecificEnthalpy_TDryBulPhi

Block to compute the specific enthalpy based on relative humidity
Diagram of SpecificEnthalpy_TDryBulPhiOpen the diagram
▶ Check in your browser

Information

This block computes the specific enthalpy for a given dry bulb temperature, relative air humidity and atmospheric pressure. The specific enthalpy is zero if the temperature is 0°C and if there is no moisture.

The correlation used in this model is from the 2009 ASHRAE Handbook Fundamentals, p. 1.9, equation 32.

Parameters

TypeNameDefaultDescription
RealpAtm101325Atmospheric pressure

Connectors

TypeNameDefaultDescription
Buildings.Controls.OBC.CDL.Interfaces.RealInputTDryBulDry bulb temperature
Buildings.Controls.OBC.CDL.Interfaces.RealInputphiRelative air humidity
Buildings.Controls.OBC.CDL.Interfaces.RealOutputhSpecific enthalpy

Revisions

  • November 12, 2020, by Michael Wetter:
    Reformulated to remove dependency to Modelica.Units.SI.
    This is for Buildings, issue 2243.
  • September 29, 2020, by Michael Wetter:
    Removed input p, used instead a parameter for the atmospheric pressure and renamed block.
    This is for Buildings, issue 2139
  • April 7, 2017 by Jianjun Hu:
    First implementation.