ThreeWayValveGas L1

Created Wednesday 03 February 2016

A model for three way valves with quadratic pressure loss dependencies.

1. Purpose of Model


This model can be used for distributing a mass flow according to the input with quadratic valve characteristics.

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.

2.2 Physical Effects Considered

2.3 Level of Insight


Pressure Loss


3. Limits of Validity

4. Interfaces


4.1 Physical Connectors


Basics:Interfaces:GasPortIn inlet
Basics:Interfaces:GasPortOut outlet1
Basics:Interfaces:GasPortOut outlet2

4.2 Inputs

4.3 Medium Models

5. Nomenclature


6. Governing Equations


Energy Balance

No loss of energy and no changes of flow velocity are applied. Therefore the outlet temperatures are equal to the inlet temperatures. Please note that this assumption is is not correct if pressure losses are applied. These simplifications have been made because isenthalpic behaviour could not be modelled correctly and pressure is not influencing the substance properties of the used ideal gas mixture.


Mass Balance

The mass balance for steady flow neglecting mass storage and quadratic distribution according to the pressure loss model.



Chemistry

No chemical reaction is taking place:


Summary

A summary record is available which bundles important component values.

7. Remarks for Usage

deactivate the control signal input by setting splitRatioInput to true


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