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

This function calculates the isothermal compressibility of R134a from the state record (e.g., use setState_phX function for input). The isothermal compressibility is modelled by the fundamental equation of state of Tillner-Roth and Baehr (1994).

Restrictions

This property is only defined in one-phase region.

kappa = isothermalCompressibility(state)

state	Type: ThermodynamicState Description: Thermodynamic state record

kappa	Type: IsothermalCompressibility (¹/Pa) Description: Isothermal compressibility