dBubbleEnthalpy_dPressure

Derivative of liquid specific enthalpy in two-phase region w.r.t pressure

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This function calculates the derivative of liquid enthalpy of R134a with regard to the state variable p (absolute pressure). The non-derivative function is bubbleEnthalpy.

Restrictions

It is only valid in the two-phase region (i.e., ptriple ≤ p ≤ pcrit ).

Syntax

dhldp = dBubbleEnthalpy_dPressure(sat)

Inputs (1)

sat

Type: SaturationProperties

Description: Saturation property record

Outputs (1)

dhldp

Type: DerEnthalpyByPressure (J·m·s²/kg²)

Description: Boiling curve specific enthalpy derivative