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Radiation gas2Gas L2

Created Tuesday 18 June 2013

A heat transfer model to calculate the radiative heat transfer from one furnace gas volume to another.

1. Purpose of Model

The model is used to calculate the radiative heat transfer between two gas volumes inside furnaces. This is a rather simple model for the case of two unlimited big parallel surfaces facing each other with constant values for emissivity and absorbance.

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

2.1 Level of Detail

This replaceable model is compatible to models of level of detail L2 according to Brunnemann et al. [1] since no spacial resolution of the heat transfer is assumed.

2.2 Physical Effects Considered

• Radiation between two gas volumes

3. Limits of Validity

• no dependencies of fluid properties
• constant values for emissivity and absorbance factors

4. Interfaces

4.1 Physical Connectors

Basics:Interfaces:HeatPort a heat

5. Nomenclature

6. Governing Equations

6.1 System Description and General model approach

This model calculates the radiation for the case of two unlimited big parallel surfaces according to [2] chapter Ka(8).

6.2 Governing Model Equations

The radiative heat transfer is calculated according to the following equation:

7. Remarks for Usage

8. Validation

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
[2] VDI Wärmeatlas, Verein Deutscher Ingenieure VDI-Gesellschaft Verfahrenstechnik und Chemieingenieurwesen (GVC), Springer Verlag, 10. Auflage, 2006

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

25.06.2014 - v0.1 - initial implementation of the model - Lasse Nielsen, TLK-Thermo GmbH

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Backlinks: ClaRa:Components:Furnace:Burner:Burner L2 Dynamic ClaRa:Components:Furnace:Burner:Burner L2 Dynamic fuelDrying ClaRa:Components:Furnace:Burner:Burner L2 Static ClaRa:Components:Furnace:FlameRoom:FlameRoomAdditionalAir L2 Dynamic ClaRa:Components:Furnace:FlameRoom:FlameRoomAdditionalAir L2 Static ClaRa:Components:Furnace:FlameRoom:FlameRoom L2 Dynamic ClaRa:Components:Furnace:FlameRoom:FlameRoom L2 Static