A Theoretical Study of the Influence of the Injection Velocity on the Heat and Fluid Flow in a Soaking-Pit Furnace when using Flameless Oxyfuel Heating

1
Par Jonsson
Par Jonsson
2
Mersedeh Ghadamgahi
Mersedeh Ghadamgahi
3
Patrik Ound
Patrik Ound
4
Nils.A.I Andresson
Nils.A.I Andresson
1 KTH Royal Institute of Technology

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A Theoretical Study of the Influence of the Injection Velocity on the Heat and Fluid Flow in a Soaking-Pit Furnace when using Flameless Oxyfuel Heating Banner
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Flameless oxyfuel combustion is one of the most recently developed combustion systems that has the potential to provide better combustion efficiency combined with a lower pollution production compared to conventional combustion systems. However, a lack of knowledge exists with respect to the influence of different parameters on the combustion results when using the flameless oxyfuel technology. Thus, in the current study a previously validated CFD model is used to investigate the effect of the injection velocity on the temperature distribution, recirculation ratio of the flue gases, flame volume, turbulence intensity, and flame radiation to the ingots. The results show that an increased injection velocity highly affects the temperature uniformity inside the chamber. More specifically, the maximum temperature difference in the flame region drops from 8.59% to 3.78% for burner capacities of 130 kW and 907 kW, respectively.

6 Cites in Articles

References

  1. (null). Supplemental Information 1: The raw data collected, observed, or obtained through experiments during the research process.
  2. Oxy-fuel combustion technology for coal-fired power generation 4.
  3. Junjun Guo,Zhaohui Liu (2018). Heat Transfer During Oxy-fuel Combustion and Boiler Design.
  4. (2006). Studies on low-intensity oxy-fuel burner.
  5. Mersedeh Ghadamgahi,Patrik Ölund,Tomas Ekman,Nils Andersson,Pär Jönsson (2018). Numerical and experimental study on flameless oxy-fuel combustion in a pilot- scale and a real-size industrial furnace.
  6. Mersedeh Ghadamgahi,Patrik Ölund,Tomas Ekman,Nils Andersson,Pär Jönsson (2018). Numerical and experimental study on flameless oxy-fuel combustion in a pilot- scale and a real-size industrial furnace.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Not applicable for this article.

Par Jonsson. 2017. \u201cA Theoretical Study of the Influence of the Injection Velocity on the Heat and Fluid Flow in a Soaking-Pit Furnace when using Flameless Oxyfuel Heating\u201d. Global Journal of Research in Engineering - G: Industrial Engineering GJRE-G Volume 17 (GJRE Volume 17 Issue G1): .

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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GJRE-G Classification: FOR Code: 290502
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v1.2

Issue date

June 2, 2017

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English

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Flameless oxyfuel combustion is one of the most recently developed combustion systems that has the potential to provide better combustion efficiency combined with a lower pollution production compared to conventional combustion systems. However, a lack of knowledge exists with respect to the influence of different parameters on the combustion results when using the flameless oxyfuel technology. Thus, in the current study a previously validated CFD model is used to investigate the effect of the injection velocity on the temperature distribution, recirculation ratio of the flue gases, flame volume, turbulence intensity, and flame radiation to the ingots. The results show that an increased injection velocity highly affects the temperature uniformity inside the chamber. More specifically, the maximum temperature difference in the flame region drops from 8.59% to 3.78% for burner capacities of 130 kW and 907 kW, respectively.

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A Theoretical Study of the Influence of the Injection Velocity on the Heat and Fluid Flow in a Soaking-Pit Furnace when using Flameless Oxyfuel Heating

Mersedeh Ghadamgahi
Mersedeh Ghadamgahi
Patrik Ound
Patrik Ound
Nils.A.I Andresson
Nils.A.I Andresson
Par Jonsson
Par Jonsson KTH Royal Institute of Technology

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