Pump real

Created Wednesday 06 August 2014

A stationary model of a pump computing the outlet mass specific enthalpy.

1. Purpose of Model


The model is supposed to be used for the simplified simulation of static cases. Its main purpose is to provide appropriate start or nominal values for similar dynamic model versions.

It computes the stationary values of:

2. Level of Detail, Physical Effects Considered and Physical Insight


2.1 Level of Detail


Referring to Brunnemann et al. [1], this model refers to the level of detail L1 because the model only computes a set of parameters for the given scenario.

2.2 Physical Effects Considered


3. Limits of Validity


The model is only able to calculate stationary situations.

4. Interfaces


4.1 Steam Signals


For details see SteamSignal_blue, SteamSignal_red and SteamSignal_green.

Inlet: Green connector
Outlet: Blue connector

4.2 Medium Models


VLE medium model

5. Nomenclature


6. Governing Equations


In general the derived equations for the model consider balance of energy.

6.1 Governing Model Equations


Density

The density is the bubble density at the inlet pressure ,

Entropy

The mass specific entropy is a function of the type of the fluid, the inlet pressure and the inlet mass specific enthalpy.

Energy


The outlet mass specific enthalpy is calculated as sum of the inlet enthalpy and the enthalpy increase between inlet and outlet considering the pump efficiency and assuming isentrop compression.

The heat transfer of the pump and the environment is zero. The necessary power of the pump is computed by

Mass


The mass balance is stationary

7. Remarks for Usage


The model can only be connected with components with matching connector colour (see Example of Usage in StaticCycles).

9. References

[1] Johannes Brunnemann and Friedrich Gottelt, Kai Wellner, Ala Renz, André Thüring, Volker Röder, Christoph Hasenbein, Christian Schulze, Gerhard Schmitz, Jörg Eiden: "Status of ClaRaCCS: Modelling and Simulation of Coal-Fired Power Plants with CO2 capture", 9th Modelica Conference, Munich, Germany, 2012

10. Authorship and Copyright Statement for original (initial) Contribution

Author:
DYNCAP/DYNSTART development team, Copyright 2011 - 2022.
Remarks:
This component was developed during DYNCAP/DYNSTART projects.
Acknowledgements:
ClaRa originated from the collaborative research projects DYNCAP and DYNSTART. Both research projects were supported by the German Federal Ministry for Economic Affairs and Energy (FKZ 03ET2009 and FKZ 03ET7060).
CLA:
The author(s) have agreed to ClaRa CLA, version 1.0. See https://claralib.com/pdf/CLA.pdf
By agreeing to ClaRa CLA, version 1.0 the author has granted the ClaRa development team a permanent right to use and modify his initial contribution as well as to publish it or its modified versions under the 3-clause BSD License.

11. Version History

Date - Version - Description of changes - author/revisor


Backlinks: ClaRa:StaticCycles