dDewDensity_dPressureDerivative of vapor density 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 vapor density of R134a in two-phase region with regard to the state variable p (absolute pressure). The non-derivative function is dewDensity.
Restrictions
It is only valid in the two-phase region (i.e., ptriple ≤ p ≤ pcrit ).
Syntax
ddvdp = dDewDensity_dPressure(sat)
Inputs (1)
| sat |
Type: SaturationProperties Description: Saturation property record |
|---|
Outputs (1)
| ddvdp |
Type: DerDensityByPressure (s²/m²) Description: Saturated steam density derivative |
|---|