The impacts of the activity coefficient on heating and evaporation of ethanol/gasoline fuel blends

Nawar Al-Esawi; Mansour Al Qubeissi; Sergei S. Sazhin; Reece Whitaker

doi:10.1016/j.icheatmasstransfer.2018.08.018

The impacts of the activity coefficient on heating and evaporation of ethanol/gasoline fuel blends

Nawar Al-Esawi, Mansour Al Qubeissi, Sergei S. Sazhin, Reece Whitaker

University of Brighton

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21 Citations (Scopus)

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Abstract

The evolutions of droplet radii and temperatures for ethanol and gasoline fuels and their blends are investigated using a modified version of the Discrete Component (DC) model, taking into account the effect of the activity coefficient (AC). The universal quasi-chemical functional–group AC (UNIFAC) model is used to predict the ACs of the blended ethanol and gasoline fuels approximated by 21 components. In contrast to previous studies, it is shown that droplet lifetimes predicted for pure gasoline are not always shorter than those predicted for ethanol/gasoline blends. They depend on the total vapour pressure of the mixture. It is shown that the original DC model predicts ethanol/gasoline fuel droplet lifetimes with errors up to 5.7% compared to those predicted using the same model but with the ACs obtained from the UNIFAC model.

Original language	English
Pages (from-to)	177-182
Number of pages	6
Journal	International Communications in Heat and Mass Transfer
Volume	98
Early online date	26 Sept 2018
DOIs	https://doi.org/10.1016/j.icheatmasstransfer.2018.08.018
Publication status	Published - Nov 2018

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in International Communications in Heat and Mass Transfer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Communications in Heat and Mass Transfer, Vol 98 (2018) DOI: 10.1016/j.icheatmasstransfer.2018.08.018

© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

Heat Transfer
Mass transfer
Fuel blends
Modelling and analysis
Biofuel
Gasoline
Droplet
Thermodynamics
Thermodynamic properties

ASJC Scopus subject areas

Fluid Flow and Transfer Processes
Automotive Engineering
Mechanical Engineering
Fuel Technology

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10.1016/j.icheatmasstransfer.2018.08.018

Post-PrintAccepted author manuscript, 1.78 MBLicence: CC BY-NC-ND

Cite this

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title = "The impacts of the activity coefficient on heating and evaporation of ethanol/gasoline fuel blends",

abstract = "The evolutions of droplet radii and temperatures for ethanol and gasoline fuels and their blends are investigated using a modified version of the Discrete Component (DC) model, taking into account the effect of the activity coefficient (AC). The universal quasi-chemical functional–group AC (UNIFAC) model is used to predict the ACs of the blended ethanol and gasoline fuels approximated by 21 components. In contrast to previous studies, it is shown that droplet lifetimes predicted for pure gasoline are not always shorter than those predicted for ethanol/gasoline blends. They depend on the total vapour pressure of the mixture. It is shown that the original DC model predicts ethanol/gasoline fuel droplet lifetimes with errors up to 5.7% compared to those predicted using the same model but with the ACs obtained from the UNIFAC model.",

keywords = "Heat Transfer, Mass transfer, Fuel blends, Modelling and analysis, Biofuel, Gasoline, Droplet, Thermodynamics, Thermodynamic properties",

author = "Nawar Al-Esawi and {Al Qubeissi}, Mansour and Sazhin, {Sergei S.} and Reece Whitaker",

note = "NOTICE: this is the author{\textquoteright}s version of a work that was accepted for publication in International Communications in Heat and Mass Transfer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Communications in Heat and Mass Transfer, Vol 98 (2018) DOI: 10.1016/j.icheatmasstransfer.2018.08.018 {\textcopyright} 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ ",

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doi = "10.1016/j.icheatmasstransfer.2018.08.018",

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AU - Al-Esawi, Nawar

AU - Al Qubeissi, Mansour

AU - Sazhin, Sergei S.

AU - Whitaker, Reece

N1 - NOTICE: this is the author’s version of a work that was accepted for publication in International Communications in Heat and Mass Transfer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Communications in Heat and Mass Transfer, Vol 98 (2018) DOI: 10.1016/j.icheatmasstransfer.2018.08.018 © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

PY - 2018/11

Y1 - 2018/11

N2 - The evolutions of droplet radii and temperatures for ethanol and gasoline fuels and their blends are investigated using a modified version of the Discrete Component (DC) model, taking into account the effect of the activity coefficient (AC). The universal quasi-chemical functional–group AC (UNIFAC) model is used to predict the ACs of the blended ethanol and gasoline fuels approximated by 21 components. In contrast to previous studies, it is shown that droplet lifetimes predicted for pure gasoline are not always shorter than those predicted for ethanol/gasoline blends. They depend on the total vapour pressure of the mixture. It is shown that the original DC model predicts ethanol/gasoline fuel droplet lifetimes with errors up to 5.7% compared to those predicted using the same model but with the ACs obtained from the UNIFAC model.

AB - The evolutions of droplet radii and temperatures for ethanol and gasoline fuels and their blends are investigated using a modified version of the Discrete Component (DC) model, taking into account the effect of the activity coefficient (AC). The universal quasi-chemical functional–group AC (UNIFAC) model is used to predict the ACs of the blended ethanol and gasoline fuels approximated by 21 components. In contrast to previous studies, it is shown that droplet lifetimes predicted for pure gasoline are not always shorter than those predicted for ethanol/gasoline blends. They depend on the total vapour pressure of the mixture. It is shown that the original DC model predicts ethanol/gasoline fuel droplet lifetimes with errors up to 5.7% compared to those predicted using the same model but with the ACs obtained from the UNIFAC model.

KW - Heat Transfer

KW - Mass transfer

KW - Fuel blends

KW - Modelling and analysis

KW - Biofuel

KW - Gasoline

KW - Droplet

KW - Thermodynamics

KW - Thermodynamic properties

U2 - 10.1016/j.icheatmasstransfer.2018.08.018

DO - 10.1016/j.icheatmasstransfer.2018.08.018

M3 - Article

SN - 0735-1933

VL - 98

SP - 177

EP - 182

JO - International Communications in Heat and Mass Transfer

JF - International Communications in Heat and Mass Transfer

ER -

The impacts of the activity coefficient on heating and evaporation of ethanol/gasoline fuel blends

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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