dDewEnthalpy_dPressureDerivative of vapor specific enthalpy in two-phase region w.r.t pressure |
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This function calculates the derivative of vapor enthalpy of R134a in the two-phase region with regard to the state variable p (absolute pressure). The non-derivative function is dewEnthalpy.
Restrictions
It is only valid in the two-phase region (i.e., ptriple ≤ p ≤ pcrit ).
Syntax
dhvdp = dDewEnthalpy_dPressure(sat)
Inputs (1)
| sat |
Type: SaturationProperties Description: Saturation property record |
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Outputs (1)
| dhvdp |
Type: DerEnthalpyByPressure (J·m·s²/kg²) Description: Saturated steam specific enthalpy derivative |
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