Modelling of heating and evaporation of n-Heptane droplets: Towards a generic model for fuel droplet/particle conversion

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

19 Citationer (Scopus)

Resumé

This study is a part of a project that is targeted to optimize the pyrolysis process of biomass pellets for bio-oil production and to develop new technology to upgrade the bio-oil for use in transportation. Among others, study of pyrolysis of the biomass pellets and evaporation of the pyrolysis bio-oil droplets are two key tasks. This paper presents an effort towards a generic model that is beneficial to both the tasks. A computer code for droplet heating and evaporation is developed in a generic 3D model framework. The droplets are discretized into a number of control volumes along the radial, polar and azimuthal directions, respectively, on each of which the flow, heat and mass transfer are numerically solved using the finite volume method. During the transient heating and evaporation process, the interaction between the moving droplets and free-stream flow are properly considered. Droplet dynamics and size are also updated accordingly. The model is validated by analytical solutions to simplified cases and also by experimental data on heating and evaporation of n-Heptane droplets available in literature. Finally, the routines to extend the validated model for the two tasks of the project are discussed and outlined.
OriginalsprogEngelsk
TidsskriftFuel
Vol/bind141
Sider (fra-til)64-73
ISSN0016-2361
DOI
StatusUdgivet - 1 feb. 2015

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Heptane
Evaporation
Heating
Oils
Pyrolysis
Biomass
Stream flow
Finite volume method
n-heptane
Mass transfer
Heat transfer

Citer dette

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title = "Modelling of heating and evaporation of n-Heptane droplets: Towards a generic model for fuel droplet/particle conversion",
abstract = "This study is a part of a project that is targeted to optimize the pyrolysis process of biomass pellets for bio-oil production and to develop new technology to upgrade the bio-oil for use in transportation. Among others, study of pyrolysis of the biomass pellets and evaporation of the pyrolysis bio-oil droplets are two key tasks. This paper presents an effort towards a generic model that is beneficial to both the tasks. A computer code for droplet heating and evaporation is developed in a generic 3D model framework. The droplets are discretized into a number of control volumes along the radial, polar and azimuthal directions, respectively, on each of which the flow, heat and mass transfer are numerically solved using the finite volume method. During the transient heating and evaporation process, the interaction between the moving droplets and free-stream flow are properly considered. Droplet dynamics and size are also updated accordingly. The model is validated by analytical solutions to simplified cases and also by experimental data on heating and evaporation of n-Heptane droplets available in literature. Finally, the routines to extend the validated model for the two tasks of the project are discussed and outlined.",
keywords = "Evaporation, n-Heptane droplet, Generic model, Pyrolysis, Bio-oil",
author = "Chungen Yin",
year = "2015",
month = "2",
day = "1",
doi = "10.1016/j.fuel.2014.10.031",
language = "English",
volume = "141",
pages = "64--73",
journal = "Fuel",
issn = "0016-2361",
publisher = "Pergamon Press",

}

Modelling of heating and evaporation of n-Heptane droplets : Towards a generic model for fuel droplet/particle conversion. / Yin, Chungen.

I: Fuel, Bind 141, 01.02.2015, s. 64-73.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Modelling of heating and evaporation of n-Heptane droplets

T2 - Towards a generic model for fuel droplet/particle conversion

AU - Yin, Chungen

PY - 2015/2/1

Y1 - 2015/2/1

N2 - This study is a part of a project that is targeted to optimize the pyrolysis process of biomass pellets for bio-oil production and to develop new technology to upgrade the bio-oil for use in transportation. Among others, study of pyrolysis of the biomass pellets and evaporation of the pyrolysis bio-oil droplets are two key tasks. This paper presents an effort towards a generic model that is beneficial to both the tasks. A computer code for droplet heating and evaporation is developed in a generic 3D model framework. The droplets are discretized into a number of control volumes along the radial, polar and azimuthal directions, respectively, on each of which the flow, heat and mass transfer are numerically solved using the finite volume method. During the transient heating and evaporation process, the interaction between the moving droplets and free-stream flow are properly considered. Droplet dynamics and size are also updated accordingly. The model is validated by analytical solutions to simplified cases and also by experimental data on heating and evaporation of n-Heptane droplets available in literature. Finally, the routines to extend the validated model for the two tasks of the project are discussed and outlined.

AB - This study is a part of a project that is targeted to optimize the pyrolysis process of biomass pellets for bio-oil production and to develop new technology to upgrade the bio-oil for use in transportation. Among others, study of pyrolysis of the biomass pellets and evaporation of the pyrolysis bio-oil droplets are two key tasks. This paper presents an effort towards a generic model that is beneficial to both the tasks. A computer code for droplet heating and evaporation is developed in a generic 3D model framework. The droplets are discretized into a number of control volumes along the radial, polar and azimuthal directions, respectively, on each of which the flow, heat and mass transfer are numerically solved using the finite volume method. During the transient heating and evaporation process, the interaction between the moving droplets and free-stream flow are properly considered. Droplet dynamics and size are also updated accordingly. The model is validated by analytical solutions to simplified cases and also by experimental data on heating and evaporation of n-Heptane droplets available in literature. Finally, the routines to extend the validated model for the two tasks of the project are discussed and outlined.

KW - Evaporation

KW - n-Heptane droplet

KW - Generic model

KW - Pyrolysis

KW - Bio-oil

U2 - 10.1016/j.fuel.2014.10.031

DO - 10.1016/j.fuel.2014.10.031

M3 - Journal article

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SP - 64

EP - 73

JO - Fuel

JF - Fuel

SN - 0016-2361

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