Numerical study on the effects of ozone addition on the development of laminar premixed flames and emissions for methane and propane in a co-flow configuration

Gianfranco Scribano; Xinwei Cheng; Manh Vu Tran

doi:10.1016/j.energy.2021.122744

Numerical study on the effects of ozone addition on the development of laminar premixed flames and emissions for methane and propane in a co-flow configuration

Gianfranco Scribano, Xinwei Cheng^*, Manh Vu Tran

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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Abstract

In this study, a numerical investigation on the effects of ozone addition on the laminar premixed flame development and emissions formation of carbon monoxide (CO) and nitrogen oxides (NO_x) for methane and propane in a co-flow burner is presented. Simulations for the reacting mixtures with the addition of ozone concentrations of 3810 ppm and 6000 ppm were performed at atmospheric pressure, ambient temperature of 298 K and equivalence ratios (φ) of 0.8, 1.0 and 1.3. Based on the simulation results, ozone improved the flame development, where the flame temperatures for methane/propane were raised by 42 K (maximum difference). Besides, the formaldehyde (CH₂O) and hydroxyl (OH) mass fractions were also increased and subsequently elongated the stand-off distances for methane/propane by 12%. The laminar burning velocities for methane/propane were accelerated by 8.7%, which were contributed by the higher rates of fuel oxidation due to the increased ozone concentration. Although the CO and NO_x mass fractions for the ozone enhanced methane/propane flames were deviated by a maximum difference of 29%, the effect of ozone on these emissions were found varied according to the fuels and φ values.

Original language	English
Article number	122744
Journal	Energy
Volume	243
Early online date	03 Feb 2022
DOIs	https://doi.org/10.1016/j.energy.2021.122744
Publication status	Published - 15 Mar 2022

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd

Keywords

Co-flow burner
Emissions
Ozone
Premixed flame

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Modelling and Simulation
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Pollution
General Energy
Mechanical Engineering
Industrial and Manufacturing Engineering
Management, Monitoring, Policy and Law
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.energy.2021.122744Licence: Unspecified

Numerical study on the effects of ozone addition on the development of laminar premixed flames and emissions for methane and propane in a co-flow configuration
Copyright 2021 Elsevier. This manuscript is distributed under a Creative Commons Attribution-NonCommercial-NoDerivs License (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited.
Accepted author manuscript, 1.18 MBLicence: CC BY-NC-ND

Cite this

@article{bb96291d3214449b859b7204d1a0d2fa,

title = "Numerical study on the effects of ozone addition on the development of laminar premixed flames and emissions for methane and propane in a co-flow configuration",

abstract = "In this study, a numerical investigation on the effects of ozone addition on the laminar premixed flame development and emissions formation of carbon monoxide (CO) and nitrogen oxides (NOx) for methane and propane in a co-flow burner is presented. Simulations for the reacting mixtures with the addition of ozone concentrations of 3810 ppm and 6000 ppm were performed at atmospheric pressure, ambient temperature of 298 K and equivalence ratios (φ) of 0.8, 1.0 and 1.3. Based on the simulation results, ozone improved the flame development, where the flame temperatures for methane/propane were raised by 42 K (maximum difference). Besides, the formaldehyde (CH2O) and hydroxyl (OH) mass fractions were also increased and subsequently elongated the stand-off distances for methane/propane by 12%. The laminar burning velocities for methane/propane were accelerated by 8.7%, which were contributed by the higher rates of fuel oxidation due to the increased ozone concentration. Although the CO and NOx mass fractions for the ozone enhanced methane/propane flames were deviated by a maximum difference of 29%, the effect of ozone on these emissions were found varied according to the fuels and φ values.",

keywords = "Co-flow burner, Emissions, Ozone, Premixed flame",

author = "Gianfranco Scribano and Xinwei Cheng and Tran, {Manh Vu}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2022",

month = mar,

day = "15",

doi = "10.1016/j.energy.2021.122744",

language = "English",

volume = "243",

journal = "Energy",

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TY - JOUR

T1 - Numerical study on the effects of ozone addition on the development of laminar premixed flames and emissions for methane and propane in a co-flow configuration

AU - Scribano, Gianfranco

AU - Cheng, Xinwei

AU - Tran, Manh Vu

PY - 2022/3/15

Y1 - 2022/3/15

N2 - In this study, a numerical investigation on the effects of ozone addition on the laminar premixed flame development and emissions formation of carbon monoxide (CO) and nitrogen oxides (NOx) for methane and propane in a co-flow burner is presented. Simulations for the reacting mixtures with the addition of ozone concentrations of 3810 ppm and 6000 ppm were performed at atmospheric pressure, ambient temperature of 298 K and equivalence ratios (φ) of 0.8, 1.0 and 1.3. Based on the simulation results, ozone improved the flame development, where the flame temperatures for methane/propane were raised by 42 K (maximum difference). Besides, the formaldehyde (CH2O) and hydroxyl (OH) mass fractions were also increased and subsequently elongated the stand-off distances for methane/propane by 12%. The laminar burning velocities for methane/propane were accelerated by 8.7%, which were contributed by the higher rates of fuel oxidation due to the increased ozone concentration. Although the CO and NOx mass fractions for the ozone enhanced methane/propane flames were deviated by a maximum difference of 29%, the effect of ozone on these emissions were found varied according to the fuels and φ values.

AB - In this study, a numerical investigation on the effects of ozone addition on the laminar premixed flame development and emissions formation of carbon monoxide (CO) and nitrogen oxides (NOx) for methane and propane in a co-flow burner is presented. Simulations for the reacting mixtures with the addition of ozone concentrations of 3810 ppm and 6000 ppm were performed at atmospheric pressure, ambient temperature of 298 K and equivalence ratios (φ) of 0.8, 1.0 and 1.3. Based on the simulation results, ozone improved the flame development, where the flame temperatures for methane/propane were raised by 42 K (maximum difference). Besides, the formaldehyde (CH2O) and hydroxyl (OH) mass fractions were also increased and subsequently elongated the stand-off distances for methane/propane by 12%. The laminar burning velocities for methane/propane were accelerated by 8.7%, which were contributed by the higher rates of fuel oxidation due to the increased ozone concentration. Although the CO and NOx mass fractions for the ozone enhanced methane/propane flames were deviated by a maximum difference of 29%, the effect of ozone on these emissions were found varied according to the fuels and φ values.

KW - Co-flow burner

KW - Emissions

KW - Ozone

KW - Premixed flame

U2 - 10.1016/j.energy.2021.122744

DO - 10.1016/j.energy.2021.122744

M3 - Article

AN - SCOPUS:85120488267

SN - 0360-5442

VL - 243

JO - Energy

JF - Energy

M1 - 122744

ER -

Numerical study on the effects of ozone addition on the development of laminar premixed flames and emissions for methane and propane in a co-flow configuration

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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