Life cycle greenhouse gas analysis of biojet fuels with a technical investigation into their impact on jet engine performance

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dc.contributor.authorLokesh, Kadambari
dc.contributor.authorSethi, Vishal
dc.contributor.authorNikolaidis, Theoklis
dc.contributor.authorGoodger, Eric
dc.contributor.authorNalianda, Devaiah
dc.date.accessioned2018-04-25T11:37:28Z
dc.date.available2018-04-25T11:37:28Z
dc.date.issued2015-04-07
dc.description.abstractBiojet fuels have been claimed to be one of the most promising and strategic solutions to mitigate aviation emissions. This study examines the environmental competence of Bio-Synthetic Paraffinic Kerosene (Bio-SPKs) against conventional Jet-A, through development of a life cycle GHG model (ALCEmB - Assessment of Life Cycle Emissions of Biofuels) from "cradle-grave" perspective. This model precisely calculates the life cycle emissions of the advanced biofuels through a multi-disciplinary study entailing hydrocarbon chemistry, thermodynamic behaviour and fuel combustion from engine/aircraft performance, into the life cycle studies, unlike earlier studies. The aim of this study is predict the "cradle-grave" carbon intensity of Camelina SPK, Microalgae SPK and Jatropha SPK through careful estimation and inclusion of combustion based emissions, which contribute ≈70% of overall life cycle emissions (LCE). Numerical modelling and non-linear/dynamic simulation of a twin-shaft turbofan, with an appropriate airframe, was conducted to analyse the impact of alternative fuels on engine/aircraft performance. ALCEmB revealed that Camelina SPK, Microalgae SPK and Jatropha SPK delivered 70%, 58% and 64% LCE savings relative to the reference fuel, Jet-A1. The net energy ratio analysis indicates that current technology for the biofuel processing is energy efficient and technically feasible. An elaborate gas property analysis infers that the Bio-SPKs exhibit improved thermodynamic behaviour in an operational gas turbine engine. This thermodynamic effect has a positive impact on aircraft-level fuel consumption and emissions characteristics demonstrating fuel savings in the range of 3-3.8% and emission savings of 5.8-6.3% (CO2) and 7.1-8.3% (LTO NOx), relative to that of Jet-A.en_UK
dc.identifier.citationLokesh K, Sethi V, Nikolaidis T, Goodger E, Nalianda D, Life cycle greenhouse gas analysis of biojet fuels with a technical investigation into their impact on jet engine performance, Biomass and Bioenergy, Vol. 77, June 2015, pp. 26-44en_UK
dc.identifier.cris3232867
dc.identifier.issn0961-9534
dc.identifier.urihttp://dx.doi.org/10.1016/j.biombioe.2015.03.005
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/13168
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectBio-SPKsen_UK
dc.subjectLife cycle emissionsen_UK
dc.subjectEngine/aircraft performanceen_UK
dc.subjectThermodynamicsen_UK
dc.subjectNumerical modellingen_UK
dc.titleLife cycle greenhouse gas analysis of biojet fuels with a technical investigation into their impact on jet engine performanceen_UK
dc.typeArticleen_UK

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