Detection of Flame Radicals Using Light-Emitting Diodes

Stefan Schorsch; Johannes Kiefer; Alfred Leipertz; Zhongshan Li; Marcus Alden

doi:10.1366/000370210793561538

Detection of Flame Radicals Using Light-Emitting Diodes

Stefan Schorsch
, Johannes Kiefer^*
, Alfred Leipertz
, Zhongshan Li
, Marcus Alden

^*Corresponding author for this work

Engineering

Swiss Federal Institute of Technology Zurich
Univ Erlangen Nurnberg, University of Erlangen Nuremberg, Lehrstuhl Tech Thermodynam
Univ Erlangen Nurnberg, University of Erlangen Nuremberg, Erlangen Grad Sch Adv Opt Technol SAOT
University of Aberdeen
Lund University

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

12 Citations (Scopus)

Abstract

Lasers are common tools in the field of combustion diagnostics In some respects, however, they have disadvantages Therefore, there is a need for new light sources delivering radiation in the required wavelength regions with high stability and reliability at low cost Light-emitting diodes (LED) in the near and mid infrared spectral region have proven their potential for spectroscopic applications in the past In the present work we demonstrate the feasibility of using ultraviolet LEDs for flame diagnostics For this purpose, OH and CH radicals are detected in premixed methane/air flames The LED emission is found to be stable after thermal equilibrium is reached This was the case after a warming up period in the order of minutes The spectral characteristics were stable during a 24 h test

Original language	English
Pages (from-to)	1330-1334
Number of pages	5
Journal	Applied Spectroscopy
Volume	64
Issue number	12
DOIs	https://doi.org/10.1366/000370210793561538
Publication status	Published - Dec 2010

Funding

This work has been financed by SSF (Swedish Foundation for Strategic Research) and the Swedish Energy Agency through CECOST (Centre for Combustion Science and Technology) and VR (Swedish Research Council) S S is grateful for the financial support from the Ernest Solvay Stiftung J K acknowledges support from the European Union (Large Scale Facility in Combustion) Furthermore the German Research Foundation (DFG) is acknowledged for funding SAOT in the framework of the German excellence initiative

Keywords

Light emitting diode
LED
Ultraviolet
Flame radical detection
Absorption spectroscopy
LASER-INDUCED FLUORESCENCE
NEAR-ULTRAVIOLET
CH
OH
SPECTROSCOPY
TEMPERATURE
THERMOMETRY
TURBULENT
BAND
GAS

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10.1366/000370210793561538Licence: Unspecified

Cite this

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title = "Detection of Flame Radicals Using Light-Emitting Diodes",

abstract = "Lasers are common tools in the field of combustion diagnostics In some respects, however, they have disadvantages Therefore, there is a need for new light sources delivering radiation in the required wavelength regions with high stability and reliability at low cost Light-emitting diodes (LED) in the near and mid infrared spectral region have proven their potential for spectroscopic applications in the past In the present work we demonstrate the feasibility of using ultraviolet LEDs for flame diagnostics For this purpose, OH and CH radicals are detected in premixed methane/air flames The LED emission is found to be stable after thermal equilibrium is reached This was the case after a warming up period in the order of minutes The spectral characteristics were stable during a 24 h test",

keywords = "Light emitting diode, LED, Ultraviolet, Flame radical detection, Absorption spectroscopy, LASER-INDUCED FLUORESCENCE, NEAR-ULTRAVIOLET, CH, OH, SPECTROSCOPY, TEMPERATURE, THERMOMETRY, TURBULENT, BAND, GAS",

author = "Stefan Schorsch and Johannes Kiefer and Alfred Leipertz and Zhongshan Li and Marcus Alden",

year = "2010",

month = dec,

doi = "10.1366/000370210793561538",

language = "English",

volume = "64",

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TY - JOUR

T1 - Detection of Flame Radicals Using Light-Emitting Diodes

AU - Schorsch, Stefan

AU - Kiefer, Johannes

AU - Leipertz, Alfred

AU - Li, Zhongshan

AU - Alden, Marcus

PY - 2010/12

Y1 - 2010/12

N2 - Lasers are common tools in the field of combustion diagnostics In some respects, however, they have disadvantages Therefore, there is a need for new light sources delivering radiation in the required wavelength regions with high stability and reliability at low cost Light-emitting diodes (LED) in the near and mid infrared spectral region have proven their potential for spectroscopic applications in the past In the present work we demonstrate the feasibility of using ultraviolet LEDs for flame diagnostics For this purpose, OH and CH radicals are detected in premixed methane/air flames The LED emission is found to be stable after thermal equilibrium is reached This was the case after a warming up period in the order of minutes The spectral characteristics were stable during a 24 h test

AB - Lasers are common tools in the field of combustion diagnostics In some respects, however, they have disadvantages Therefore, there is a need for new light sources delivering radiation in the required wavelength regions with high stability and reliability at low cost Light-emitting diodes (LED) in the near and mid infrared spectral region have proven their potential for spectroscopic applications in the past In the present work we demonstrate the feasibility of using ultraviolet LEDs for flame diagnostics For this purpose, OH and CH radicals are detected in premixed methane/air flames The LED emission is found to be stable after thermal equilibrium is reached This was the case after a warming up period in the order of minutes The spectral characteristics were stable during a 24 h test

KW - Light emitting diode

KW - LED

KW - Ultraviolet

KW - Flame radical detection

KW - Absorption spectroscopy

KW - LASER-INDUCED FLUORESCENCE

KW - NEAR-ULTRAVIOLET

KW - CH

KW - OH

KW - SPECTROSCOPY

KW - TEMPERATURE

KW - THERMOMETRY

KW - TURBULENT

KW - BAND

KW - GAS

U2 - 10.1366/000370210793561538

DO - 10.1366/000370210793561538

M3 - Article

SN - 1943-3530

VL - 64

SP - 1330

EP - 1334

JO - Applied Spectroscopy

JF - Applied Spectroscopy

IS - 12

ER -

Detection of Flame Radicals Using Light-Emitting Diodes

Abstract

Funding

Keywords

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