.ThermofluidStream.Media.myMedia.R134a.R134a_ph.dDewEnthalpy_dPressure

Information

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., p_triple ≤ p ≤ p_crit ).