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High temperature air combustion (HITAC) phenomena and its thermodynamics
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology. Alstom Switzerland Ltd., Baden, Switzerland .
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology.
2014 (English)In: ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 2014, Vol. 6AConference paper, Published paper (Refereed)
Abstract [en]

The fundamentals and thermodynamic analysis of High Temperature Air Combustion (HiTAC) technology is presented with focus on industrial furnaces as they are amongst the major energy users. The HiTAC is characterized by high temperature of combustion air having low oxygen concentration. This study provides a theoretical analysis of HiTAC a process from the thermodynamic point of view. The results demonstrate the possibilities of reducing thermodynamic irreversibility of combustion by considering an oxygen-deficient combustion process that utilizes both gas- and heat-recirculation. Furthermore, combustion with the use of oxygen (in place of air) is also analyzed. The results showed that a system which utilizes oxygen as an oxidizer results in higher 1st and 2nd law efficiencies as compared to the case with air as the oxidizer. This study is aimed at providing technical guidance to further improve efficiency of a combustion process which show very small temperature increases due to mild chemical reactions. The significant of these findings are now widely used in industrial furnaces with singular successes on energy savings, pollution reduction and reduced size of the equipment. The exergy analysis too can be used as a technical tool to improve efficiency in combustion processes.

Place, publisher, year, edition, pages
2014. Vol. 6A
Keyword [en]
Combustion; Energy conservation; Industrial furnaces; Oxygen; Thermoanalysis; Thermodynamics, Combustion pro-cess; Heat recirculation; High temperature air combustion; Pollution reduction; Technical guidances; Temperature increase; Thermo dynamic analysis; Thermodynamic irreversibility, Temperature
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-168130DOI: 10.1115/IMECE2014-36312ISI: 000380413000078Scopus ID: 2-s2.0-84926331609OAI: oai:DiVA.org:kth-168130DiVA: diva2:815525
Conference
ASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014; Montreal; Canada
Note

QC 20150601

Available from: 2015-06-01 Created: 2015-05-27 Last updated: 2016-08-23Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
  • html
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  • asciidoc
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