dDewEntropy_dPressure_der_satTime derivative of vapor specific entropy in two-phase region w.r.t. pressure | use setState_phX function for input |
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
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 ).
Syntax
der_dsvdp = dDewEntropy_dPressure_der_sat(sat, der_sat)
Inputs (2)
| sat |
Type: SaturationProperties Description: Saturation properties | pressure is used for interpolation |
|---|---|
| der_sat |
Type: SaturationProperties Description: Derivative of saturation properties |
Outputs (1)
| der_dsvdp |
Type: Real Description: Derivative of vapor specific entropy in two-phase region w.r.t. pressure |
|---|