.ThermoPower.Water.Header

Information

This model describes a constant volume header with metal walls. The fluid can be water, steam, or a two-phase mixture.

It is possible to take into account the heat storage and transfer in the metal wall in two ways:

• Leave InternalSurface unconnected, and set the appropriate values for the total wall heat capacity Cm, surface S and heat transfer coefficient gamma. In this case, the metal wall temperature is considered as uniform, and the wall is thermally insulated from the outside.
• Set Cm = 0, and connect a suitable thermal model of the the wall to the InternalSurface connector instead. This can be useful in case a more detailed thermal model is needed, e.g. for thermal stress studies.

The model can represent an actual header when connected to the model of a bank of tubes (e.g., Flow1D with Nt>1).

Contents

Name	Description
Medium	Medium model

Revisions

• 30 May 2005 by Francesco Casella:
  Initialisation support added.
• 12 Apr 2005 by Francesco Casella:
  InternalSurface connector added.
• 16 Dec 2004 by Francesco Casella:
  Standard medium definition added.
• 28 Jul 2004 by Francesco Casella:
  Added head between inlet and outlet.
• 7 Jul 2004 by Francesco Casella:
  Changed name from Collector to Header.
• 18 Jun 2004 by Francesco Casella:
  Adapted to Modelica.Media.
• 1 Oct 2003 by Francesco Casella:
  First release.