Planar Laser-Induced Fluorescence and Chemiluminescence Analyses of CO2-Argon-SteamOxyfuel (CARSOXY) Combustion

Odi Fawwaz Alrebei; Abdulkarem I. Amhamed; Syed Mashruk; Phil Bowen; Agustin Valera Medina

doi:10.3390/en15010263

Planar Laser-Induced Fluorescence and Chemiluminescence Analyses of CO2-Argon-SteamOxyfuel (CARSOXY) Combustion

Odi Fawwaz Alrebei^*, Abdulkarem I. Amhamed, Syed Mashruk, Phil Bowen, Agustin Valera Medina

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

Strict regulations and acts have been imposed to limit NOx and carbon emissions. The power generation industry has resorted to innovative techniques to overcome such a low level of tolerance. Amongst those in the literature, CO2-argon-steam oxyfuel (CARSOXY) gas turbines have theoretically been proven to offer an economically sustainable solution while retaining high efficiency. Although theoretical studies have characterized CARSOXY, no experimental evidence has been provided in the literature. Therefore, this paper attempts to experimentally assess CARSOXY in comparison to a CH4/air flame. OH* chemiluminescence integrated with OH Planar Laser-Induced Fluorescence (PLIF) imaging has been utilized to study flame stability and flame geometry (i.e., the area of highest heat intensity (AOH over bar Max center of highest heat intensity (COH over bar Max)) over a range of working fluid Reynolds' numbers and oxidizing equivalence ratios. In addition, the standard deviation of heat release fluctuations (sigma OH*/OH over bar ) has been utilized as the base-criteria to compare the stability performance of CARSOXY to CH4/air combustion. Moreover, turbulence-chemistry interactions have been described using Damkohler numbers and by plotting Borghi regime diagrams. This paper suggests a modified numerical approach to estimate Damkohler numbers and plot regime diagrams for non-premixed combustion by utilizing the Buckingham pi theorem based on experimental observations and results. CARSOXY flames showed lower flame intensity than that of the CH4/air flame throughout the entire Re interval by approximately 16%, indicating higher heat release. The Damkohler numbers of the CARSOXY flame were also greater than those of the CH4/air flame in all conditions, indicating more uniform CARSOXY flames. It was found that the tendency of the CARSOXY flame of approaching the concentrated reaction zone is greater than that of the CH4/air flame.

Original language	English
Article number	263
Number of pages	23
Journal	Energies
Volume	15
Issue number	1
DOIs	https://doi.org/10.3390/en15010263
Publication status	Published - 1 Jan 2022

Keywords

Borghi regime diagram
Carsoxy
Chemiluminescence
Damkohler number
Oxyfuel
Plif

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10.3390/en15010263

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title = "Planar Laser-Induced Fluorescence and Chemiluminescence Analyses of CO2-Argon-SteamOxyfuel (CARSOXY) Combustion",

abstract = "Strict regulations and acts have been imposed to limit NOx and carbon emissions. The power generation industry has resorted to innovative techniques to overcome such a low level of tolerance. Amongst those in the literature, CO2-argon-steam oxyfuel (CARSOXY) gas turbines have theoretically been proven to offer an economically sustainable solution while retaining high efficiency. Although theoretical studies have characterized CARSOXY, no experimental evidence has been provided in the literature. Therefore, this paper attempts to experimentally assess CARSOXY in comparison to a CH4/air flame. OH* chemiluminescence integrated with OH Planar Laser-Induced Fluorescence (PLIF) imaging has been utilized to study flame stability and flame geometry (i.e., the area of highest heat intensity (AOH over bar Max center of highest heat intensity (COH over bar Max)) over a range of working fluid Reynolds' numbers and oxidizing equivalence ratios. In addition, the standard deviation of heat release fluctuations (sigma OH*/OH over bar ) has been utilized as the base-criteria to compare the stability performance of CARSOXY to CH4/air combustion. Moreover, turbulence-chemistry interactions have been described using Damkohler numbers and by plotting Borghi regime diagrams. This paper suggests a modified numerical approach to estimate Damkohler numbers and plot regime diagrams for non-premixed combustion by utilizing the Buckingham pi theorem based on experimental observations and results. CARSOXY flames showed lower flame intensity than that of the CH4/air flame throughout the entire Re interval by approximately 16\%, indicating higher heat release. The Damkohler numbers of the CARSOXY flame were also greater than those of the CH4/air flame in all conditions, indicating more uniform CARSOXY flames. It was found that the tendency of the CARSOXY flame of approaching the concentrated reaction zone is greater than that of the CH4/air flame.",

keywords = "Borghi regime diagram, Carsoxy, Chemiluminescence, Damkohler number, Oxyfuel, Plif",

author = "Alrebei, \{Odi Fawwaz\} and Amhamed, \{Abdulkarem I.\} and Syed Mashruk and Phil Bowen and Medina, \{Agustin Valera\}",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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doi = "10.3390/en15010263",

language = "English",

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AU - Alrebei, Odi Fawwaz

AU - Amhamed, Abdulkarem I.

AU - Mashruk, Syed

AU - Bowen, Phil

AU - Medina, Agustin Valera

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AB - Strict regulations and acts have been imposed to limit NOx and carbon emissions. The power generation industry has resorted to innovative techniques to overcome such a low level of tolerance. Amongst those in the literature, CO2-argon-steam oxyfuel (CARSOXY) gas turbines have theoretically been proven to offer an economically sustainable solution while retaining high efficiency. Although theoretical studies have characterized CARSOXY, no experimental evidence has been provided in the literature. Therefore, this paper attempts to experimentally assess CARSOXY in comparison to a CH4/air flame. OH* chemiluminescence integrated with OH Planar Laser-Induced Fluorescence (PLIF) imaging has been utilized to study flame stability and flame geometry (i.e., the area of highest heat intensity (AOH over bar Max center of highest heat intensity (COH over bar Max)) over a range of working fluid Reynolds' numbers and oxidizing equivalence ratios. In addition, the standard deviation of heat release fluctuations (sigma OH*/OH over bar ) has been utilized as the base-criteria to compare the stability performance of CARSOXY to CH4/air combustion. Moreover, turbulence-chemistry interactions have been described using Damkohler numbers and by plotting Borghi regime diagrams. This paper suggests a modified numerical approach to estimate Damkohler numbers and plot regime diagrams for non-premixed combustion by utilizing the Buckingham pi theorem based on experimental observations and results. CARSOXY flames showed lower flame intensity than that of the CH4/air flame throughout the entire Re interval by approximately 16%, indicating higher heat release. The Damkohler numbers of the CARSOXY flame were also greater than those of the CH4/air flame in all conditions, indicating more uniform CARSOXY flames. It was found that the tendency of the CARSOXY flame of approaching the concentrated reaction zone is greater than that of the CH4/air flame.

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KW - Chemiluminescence

KW - Damkohler number

KW - Oxyfuel

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DO - 10.3390/en15010263

M3 - Article

AN - SCOPUS:85122975219

SN - 1996-1073

VL - 15

JO - Energies

JF - Energies

IS - 1

M1 - 263

ER -

Planar Laser-Induced Fluorescence and Chemiluminescence Analyses of CO2-Argon-SteamOxyfuel (CARSOXY) Combustion

Abstract

Keywords

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