packageConstantProperties_pT

Information

Model for liquid water with constant properties at given nominal conditions.

This water model is similar to Buildings.Media.Water with regard to its complexity. It also uses constant values for properties such as density and specific heat capacity. The main difference is that the constants T_nominal and p_nominal allow for user-provided nominal condition of the water model. The constant properties will be derived for this nominal condition. The maximum allowed temperature is set at the saturation temperature for the given nominal pressure p_nominal.

Assumptions and limitations

The nominal values for the constant medium properties are calculated using the Modelica.Media.Water.WaterIF97_base model.

Typical use and important parameters

A model using this medium model can set the nominal conditions e.g. by defining

  package Medium = Buildings.Media.Specialized.Water.ConstantProperties_pT(
    T_nominal=273.15+100,
    p_nominal=5e5);

Parameters

Revisions

• September 20, 2016, by Michael Wetter:
  Reordered constants to conform with the order in package.order.
  This is for issue 518.
• September 14, 2016, by Michael Wetter:
  Revised implementation.
• September 8, 2016, by Marcus Fuchs:
  First implementation.