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dc.contributor.authorHarman-Thomas, James M.
dc.contributor.authorKashif, Touqeer Anwar
dc.contributor.authorHughes, Kevin J.
dc.contributor.authorPourkashanian, Mohamed
dc.contributor.authorFarooq, Aamir
dc.date.accessioned2023-03-02T08:03:55Z
dc.date.available2023-03-02T08:03:55Z
dc.date.issued2023-02-24
dc.identifier.citationHarman-Thomas, J. M., Kashif, T. A., Hughes, K. J., Pourkashanian, M., & Farooq, A. (2023). Experimental and modelling study of syngas combustion in CO2 bath gas. Fuel, 342, 127865. https://doi.org/10.1016/j.fuel.2023.127865
dc.identifier.issn0016-2361
dc.identifier.doi10.1016/j.fuel.2023.127865
dc.identifier.urihttp://hdl.handle.net/10754/689909
dc.description.abstractSyngas produced from coal and biomass gasification has been proposed as a potential fuel for direct-fired supercritical power cycles. For instance, the Allam-Fetvedt cycle can offer price-competitive electricity production with 100 % inherent carbon capture while utilizing CO2 dilution of about 96 %. In this work, ignition delay times (IDTs) of syngas have been measured in CO2 diluted conditions using a high-pressure shock tube at two pressures (20 and 40 bar) over a temperature range of 1100 – 1300 K. Syngas mixtures in this study were varied in equivalence ratio and H2:CO ratios. The datasets were compared against the predictions of AramcoMech 2.0 and the University of Sheffield supercritical CO2 2.0 (UoS sCO2 2.0) kinetic models. Quantitative comparative analysis showed that the UoS sCO2 2.0 was superior in its ability to predict the experimental IDTs of syngas combustion. We found that the reaction of CO2 and H to form CO and OH caused the separation of H2 and CO ignition in two events, which increased the complexity of determining the IDTs. We investigated this phenomenon and proposed a method to determine simulated IDTs for an effective comparison against the experimental IDTs. The chemical kinetics of syngas combustion in a CO2 and N2 bath gas are contrasted by sensitivity and rate-of-production analyses. By altering the ratio of H2 and CO as well as mixture equivalence ratio, this work provides vital IDT data in CO2 bath gas for further development and validation of relevant kinetics mechanisms.
dc.description.sponsorshipThe work of KAUST authors was funded by baseline research funds at King Abdullah University of Science and Technology (KAUST). This work has been supported by the EPSRC Centre for Doctoral Training in Resilient Decarbonised Fuel Energy Systems (Grant number: EP/S022996/1) and the International Flame Research Federation (IFRF).
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0016236123004787
dc.rightsArchived with thanks to Fuel under a Creative Commons license, details at: http://creativecommons.org/licenses/by/4.0/
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleExperimental and modelling study of syngas combustion in CO2 bath gas
dc.typeArticle
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentClean Combustion Research Center
dc.identifier.journalFuel
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionThe University of Sheffield, Department of Mechanical Engineering, Translational Energy Research Centre, Sheffield S9 1ZA, United Kingdom
dc.identifier.volume342
dc.identifier.pages127865
kaust.personKashif, Touqeer Anwar
kaust.personFarooq, Aamir
dc.date.accepted2023-02-14
dc.identifier.eid2-s2.0-85148667164
refterms.dateFOA2023-03-02T08:05:35Z
kaust.acknowledged.supportUnitBaseline research funds


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Archived with thanks to Fuel under a Creative Commons license, details at: http://creativecommons.org/licenses/by/4.0/
Except where otherwise noted, this item's license is described as Archived with thanks to Fuel under a Creative Commons license, details at: http://creativecommons.org/licenses/by/4.0/