GetSatAirEnthalpy Function

  function GetSatAirEnthalpy(TDryBulb, Pressure) result(SatAirEnthalpy)
    !+ Return saturated air enthalpy given dry-bulb temperature and pressure.
    !+ Reference:
    !+ ASHRAE Handbook - Fundamentals (2017) ch. 1

    real, intent(in)  ::  TDryBulb
      !+ Dry-bulb temperature in °F [IP] or °C [SI]
    real, intent(in)  ::  Pressure
      !+ Atmospheric pressure in Psi [IP] or Pa [SI]
    real              ::  SatAirEnthalpy
      !+ Saturated air enthalpy in Btu lb⁻¹ [IP] or J kg⁻¹ [SI]

    SatAirEnthalpy = GetMoistAirEnthalpy(TDryBulb, GetSatHumRatio(TDryBulb, Pressure))
  end function GetSatAirEnthalpy