functiondDewEntropy_dPressure_der_sat
Time derivative of vapor specific entropy in two-phase region w.r.t. pressure | use setState_phX function for input
Extends from Modelica.Icons.Function.
Information
This function calculates the time derivative of vapor specific entropy of R134a with regard to the time derivative of p. The non-derivative function is dewEntropy.
Restrictions
It is only valid in the two-phase region (i.e., ptriple ≤ p ≤ pcrit ).
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| SaturationProperties | sat | Saturation properties | pressure is used for interpolation | |
| SaturationProperties | der_sat | Derivative of saturation properties |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Real | der_dsvdp | Derivative of vapor specific entropy in two-phase region w.r.t. pressure |