The combustion gases theoretical adiabatic temperatures are reduced to equilibrium temperatures mainly because of the endothermic reactions of CO2 and H2O dissociation and NO formation. Therefore, the heating capacity of the gases is reduced to the equilibrium gases enthalpy. In the paper, these reactions and the way to consider them to calculate the gases’ final equilibrium are exemplified, covering an ample range of temperatures. It is shown the method sensitivity and the results are verified against some registered values. The procedure allows calculation of the NO formation, evidencing its increment with the temperature. The reductions in combustion gases’ adiabatic temperature and heating capacity are proportional to the theoretical adiabatic combustion temperature, apparent when the respective percentage decrements go from 2.2 and 2.7 at 2224 K to 46.8 and 50.9 at 7427 K for the studied combustion systems. This trend points out some maximum temperature reachable by oxidation, possibly 6000 K-the approximate energy emission sun temperature.
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June 2012
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Reduction of Combustion Gases’ Temperature and Heating Capacity by CO2 and H2O Dissociation and NO Formation
Leonardo Flores,
Leonardo Flores
Facultad de Ingeniería,Departamento de Termo-fluidos, DIMEI,Universidad Nacional Autónoma de México, Ciudad Universitaria,C. P. 04510, Mexico D. F.,
e-mail: 8344afc@prodigy.net.mx
Mexico
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Jaime Cervantes de Gortari
Jaime Cervantes de Gortari
Facultad de Ingeniería,Departamento de Termo-fluidos, DIMEI,Universidad Nacional Autónoma de México, Ciudad Universitaria,C. P. 04510, Mexico D. F.,
Mexico
Search for other works by this author on:
Leonardo Flores
Facultad de Ingeniería,Departamento de Termo-fluidos, DIMEI,Universidad Nacional Autónoma de México, Ciudad Universitaria,C. P. 04510, Mexico D. F.,
Mexico
e-mail: 8344afc@prodigy.net.mx
Jaime Cervantes de Gortari
Facultad de Ingeniería,Departamento de Termo-fluidos, DIMEI,Universidad Nacional Autónoma de México, Ciudad Universitaria,C. P. 04510, Mexico D. F.,
Mexico
J. Eng. Gas Turbines Power. Jun 2012, 134(6): 064503 (5 pages)
Published Online: April 12, 2012
Article history
Received:
September 4, 2011
Revised:
October 13, 2011
Published:
April 9, 2012
Online:
April 12, 2012
Citation
Flores, L., and Cervantes de Gortari, J. (April 12, 2012). "Reduction of Combustion Gases’ Temperature and Heating Capacity by CO2 and H2O Dissociation and NO Formation." ASME. J. Eng. Gas Turbines Power. June 2012; 134(6): 064503. https://doi.org/10.1115/1.4005983
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