Annex60.Utilities.Psychrometrics.Functions.BaseClasses.der_pW_X

# .Annex60.Utilities.Psychrometrics.Functions.BaseClasses.der_pW_X

Derivative of function pW_X

## Information

Derivative of function Annex60.Utilities.Psychrometrics.Functions.pW_X.

#### Interface

>     function der_pW_X
>       extends Modelica.Icons.Function;
>       input Modelica.SIunits.MassFraction X_w(min = 0, max = 1, nominal = 0.01) "Species concentration at dry bulb temperature";
>       input Modelica.SIunits.Pressure p = 101325 "Total pressure";
>       input Real dX_w "Differential of species concentration at dry bulb temperature";
>       input Real dp "Differential of total pressure";
>       output Real dp_w "Differential of water vapor pressure";
>     end der_pW_X;

## Revisions

- May 21, 2010 by Michael Wetter:
  First implementation.

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