Fuel spray combustion of waste cooking oil and palm oil biodiesel: Direct photography and detailed chemical kinetics

Handle URI:
http://hdl.handle.net/10754/564814
Title:
Fuel spray combustion of waste cooking oil and palm oil biodiesel: Direct photography and detailed chemical kinetics
Authors:
Kuti, Olawole; Nishida, Keiya; Sarathy, Mani ( 0000-0002-3975-6206 ) ; Zhu, Jingyu
Abstract:
This paper studies the ignition processes of two biodiesel from two different feedstock sources, namely waste cooked oil (WCO) and palm oil (PO). They were investigated using the direct photography through high-speed video observations and detailed chemical kinetics. The detailed chemical kinetics modeling was carried out to complement data acquired using the high-speed video observations. For the high-speed video observations, an image intensifier combined with OH* filter connected to a high-speed video camera was used to obtain OH* chemiluminscence image near 313 nm. The OH* images were used to obtain the experimental ignition delay of the biodiesel fuels. For the high-speed video observations, experiments were done at an injection pressure of 100, 200 and 300 MPa using a 0.16 mm injector nozzle. Also a detailed chemical kinetics for the biodiesel fuels was carried out using ac chemical kinetics solver adopting a 0-D reactor model to obtain the chemical ignition delay of the combusting fuels. Equivalence ratios obtained from the experimental ignition delay were used for the detailed chemical kinetics analyses. The Politecnico di Milano's thermochemical and reaction kinetic data were adopted to simulate the ignition processes of the biodiesels using the five fatty acid methyl esters (FAME) major components in the biodiesel fuels. From the high-speed video observations, it was observed that at increasing injection pressure, experimental ignition delay increased as a result of improvement in fuel and air mixing effects. Also the palm oil biodiesel has a shorter ignition delay compared to waste cooked oil biodiesel. This phenomenon could be attributed to the higher cetane number of palm biodiesel. The fuel spray ignition properties depend on both the physical ignition delay and chemical ignition delay. From the detailed chemical kinetic results it was observed that at the low temperature, high ambient pressure conditions reactivity increased as equivalent ratio increased. PO has a higher reactivity and this make its chemical ignition delay shorter as compared to WCO. This was attributed to the higher percentage of straight fully saturated chain methyl ester, i.e., methyl palmitate (C16:0) in PO. As injection pressure increases, physical delay, which is the difference between the experimental ignition delay and chemical ignition delay, decreases. As a result of inferior atomization PO biodiesel has longer physical delay compared to WCO. Hence it took longer time for PO biodiesel to achieve mixing prior to chemical ignition delay. Copyright © 2013 SAE International and Copyright © 2013 KSAE.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division; Chemical and Biological Engineering Program
Publisher:
SAE International
Journal:
SAE Technical Paper Series
Conference/Event name:
SAE/KSAE 2013 International Powertrains, Fuels and Lubricants Meeting, FFL 2013
Issue Date:
14-Oct-2013
DOI:
10.4271/2013-01-2554
Type:
Conference Paper
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Chemical and Biological Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorKuti, Olawoleen
dc.contributor.authorNishida, Keiyaen
dc.contributor.authorSarathy, Manien
dc.contributor.authorZhu, Jingyuen
dc.date.accessioned2015-08-04T07:16:57Zen
dc.date.available2015-08-04T07:16:57Zen
dc.date.issued2013-10-14en
dc.identifier.doi10.4271/2013-01-2554en
dc.identifier.urihttp://hdl.handle.net/10754/564814en
dc.description.abstractThis paper studies the ignition processes of two biodiesel from two different feedstock sources, namely waste cooked oil (WCO) and palm oil (PO). They were investigated using the direct photography through high-speed video observations and detailed chemical kinetics. The detailed chemical kinetics modeling was carried out to complement data acquired using the high-speed video observations. For the high-speed video observations, an image intensifier combined with OH* filter connected to a high-speed video camera was used to obtain OH* chemiluminscence image near 313 nm. The OH* images were used to obtain the experimental ignition delay of the biodiesel fuels. For the high-speed video observations, experiments were done at an injection pressure of 100, 200 and 300 MPa using a 0.16 mm injector nozzle. Also a detailed chemical kinetics for the biodiesel fuels was carried out using ac chemical kinetics solver adopting a 0-D reactor model to obtain the chemical ignition delay of the combusting fuels. Equivalence ratios obtained from the experimental ignition delay were used for the detailed chemical kinetics analyses. The Politecnico di Milano's thermochemical and reaction kinetic data were adopted to simulate the ignition processes of the biodiesels using the five fatty acid methyl esters (FAME) major components in the biodiesel fuels. From the high-speed video observations, it was observed that at increasing injection pressure, experimental ignition delay increased as a result of improvement in fuel and air mixing effects. Also the palm oil biodiesel has a shorter ignition delay compared to waste cooked oil biodiesel. This phenomenon could be attributed to the higher cetane number of palm biodiesel. The fuel spray ignition properties depend on both the physical ignition delay and chemical ignition delay. From the detailed chemical kinetic results it was observed that at the low temperature, high ambient pressure conditions reactivity increased as equivalent ratio increased. PO has a higher reactivity and this make its chemical ignition delay shorter as compared to WCO. This was attributed to the higher percentage of straight fully saturated chain methyl ester, i.e., methyl palmitate (C16:0) in PO. As injection pressure increases, physical delay, which is the difference between the experimental ignition delay and chemical ignition delay, decreases. As a result of inferior atomization PO biodiesel has longer physical delay compared to WCO. Hence it took longer time for PO biodiesel to achieve mixing prior to chemical ignition delay. Copyright © 2013 SAE International and Copyright © 2013 KSAE.en
dc.publisherSAE Internationalen
dc.titleFuel spray combustion of waste cooking oil and palm oil biodiesel: Direct photography and detailed chemical kineticsen
dc.typeConference Paperen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical and Biological Engineering Programen
dc.identifier.journalSAE Technical Paper Seriesen
dc.conference.date21 October 2013 through 23 October 2013en
dc.conference.nameSAE/KSAE 2013 International Powertrains, Fuels and Lubricants Meeting, FFL 2013en
dc.conference.locationSeoulen
dc.contributor.institutionUniv of Hiroshima, Japanen
dc.contributor.institutionMazda Motor Corp., Japanen
kaust.authorKuti, Olawoleen
kaust.authorSarathy, Manien
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