Combustion Characteristics of C5 Alcohols and a Skeletal Mechanism for Homogeneous Charge Compression Ignition Combustion Simulation

Handle URI:
http://hdl.handle.net/10754/583934
Title:
Combustion Characteristics of C5 Alcohols and a Skeletal Mechanism for Homogeneous Charge Compression Ignition Combustion Simulation
Authors:
Park, Sungwoo ( 0000-0002-2800-1908 ) ; Chung, Suk-Ho ( 0000-0001-8782-312X ) ; Lu, Tianfeng; Sarathy, Mani ( 0000-0002-3975-6206 )
Abstract:
C5 alcohols are considered alternative fuels because they emit less greenhouse gases and fewer harmful pollutants. In this study, the combustion characteristics of 2-methylbutanol (2-methyl-1-butanol) and isopentanol (3-methyl-1-butanol) and their mixtures with primary reference fuels (PRFs) were studied using a detailed chemical kinetic model obtained from merging previously published mechanisms. Ignition delay times of the C5 alcohol/air mixtures were compared to PRFs at 20 and 40 atm. Reaction path analyses were conducted at intermediate and high temperatures to identify the most influential reactions controlling ignition of C5 alcohols. The direct relation graph with expert knowledge methodology was used to eliminate unimportant species and reactions in the detailed mechanism, and the resulting skeletal mechanism was tested at various homogeneous charge compression ignition (HCCI) engine combustion conditions. These simulations were used to investigate the heat release characteristics of the methyl-substituted C5 alcohols, and the results show relatively strong reactions at intermediate temperatures prior to hot ignition. C5 alcohol blending in PRF75 in HCCI combustion leads to a significant decrease of low-temperature heat release (LTHR) and a delay of the main combustion. The heat release features demonstrated by C5 alcohols can be used to improve the design and operation of advanced engine technologies.
KAUST Department:
Clean Combustion Research Center
Citation:
Combustion Characteristics of C5 Alcohols and a Skeletal Mechanism for Homogeneous Charge Compression Ignition Combustion Simulation 2015, 29 (11):7584 Energy & Fuels
Publisher:
American Chemical Society (ACS)
Journal:
Energy & Fuels
Issue Date:
27-Oct-2015
DOI:
10.1021/acs.energyfuels.5b01392
Type:
Article
ISSN:
0887-0624; 1520-5029
Additional Links:
http://pubs.acs.org/doi/10.1021/acs.energyfuels.5b01392
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorPark, Sungwooen
dc.contributor.authorChung, Suk-Hoen
dc.contributor.authorLu, Tianfengen
dc.contributor.authorSarathy, Manien
dc.date.accessioned2015-12-15T09:14:03Zen
dc.date.available2015-12-15T09:14:03Zen
dc.date.issued2015-10-27en
dc.identifier.citationCombustion Characteristics of C5 Alcohols and a Skeletal Mechanism for Homogeneous Charge Compression Ignition Combustion Simulation 2015, 29 (11):7584 Energy & Fuelsen
dc.identifier.issn0887-0624en
dc.identifier.issn1520-5029en
dc.identifier.doi10.1021/acs.energyfuels.5b01392en
dc.identifier.urihttp://hdl.handle.net/10754/583934en
dc.description.abstractC5 alcohols are considered alternative fuels because they emit less greenhouse gases and fewer harmful pollutants. In this study, the combustion characteristics of 2-methylbutanol (2-methyl-1-butanol) and isopentanol (3-methyl-1-butanol) and their mixtures with primary reference fuels (PRFs) were studied using a detailed chemical kinetic model obtained from merging previously published mechanisms. Ignition delay times of the C5 alcohol/air mixtures were compared to PRFs at 20 and 40 atm. Reaction path analyses were conducted at intermediate and high temperatures to identify the most influential reactions controlling ignition of C5 alcohols. The direct relation graph with expert knowledge methodology was used to eliminate unimportant species and reactions in the detailed mechanism, and the resulting skeletal mechanism was tested at various homogeneous charge compression ignition (HCCI) engine combustion conditions. These simulations were used to investigate the heat release characteristics of the methyl-substituted C5 alcohols, and the results show relatively strong reactions at intermediate temperatures prior to hot ignition. C5 alcohol blending in PRF75 in HCCI combustion leads to a significant decrease of low-temperature heat release (LTHR) and a delay of the main combustion. The heat release features demonstrated by C5 alcohols can be used to improve the design and operation of advanced engine technologies.en
dc.language.isoenen
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/10.1021/acs.energyfuels.5b01392en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Energy & Fuels, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/10.1021/acs.energyfuels.5b01392.en
dc.titleCombustion Characteristics of C5 Alcohols and a Skeletal Mechanism for Homogeneous Charge Compression Ignition Combustion Simulationen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalEnergy & Fuelsen
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Mechanical Engineering, University of Connecticut, Storrs, Connecticut 06269-3139, United Statesen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorPark, Sungwooen
kaust.authorChung, Suk-Hoen
kaust.authorSarathy, Manien
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