In-situ diagnostics of combustion parameters using laser-induced breakdown spectroscopy

Taewoo Lee, N. Hegde, I. Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Laser-Induced breakdown spectroscopy is a powerful diagnostic method that can be applied to combustion systems for measurements of fuel-air ratios, fuel composition, and temperature. In this study, we specifically show the application of LIBS for in-situ flame temperature measurements at conditions up to moderately sooting conditions (equivalence ratio of 15 for methane-air flames). Comparisons with existing data obtained from thermocouple exhibit excellent agreement in weakly sooting flames and good agreement at higher equivalence ratios. The deviation at higher equivalence ratios is attributed to signal trapping due to soot and precursor species and also due to increase in hydrogen spectral signal at these conditions. These are factors that can be circumvented and do not preclude application of LIBS to highly sooting flames.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Summer Heat Transfer Conference, HT 2005
Pages713-718
Number of pages6
DOIs
StatePublished - Dec 1 2005
Event2005 ASME Summer Heat Transfer Conference, HT 2005 - San Francisco, CA, United States
Duration: Jul 17 2005Jul 22 2005

Publication series

NameProceedings of the ASME Summer Heat Transfer Conference
Volume1

Other

Other2005 ASME Summer Heat Transfer Conference, HT 2005
CountryUnited States
CitySan Francisco, CA
Period7/17/057/22/05

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Lee, T., Hegde, N., & Han, I. (2005). In-situ diagnostics of combustion parameters using laser-induced breakdown spectroscopy. In Proceedings of the ASME Summer Heat Transfer Conference, HT 2005 (pp. 713-718). [HT2005-72517] (Proceedings of the ASME Summer Heat Transfer Conference; Vol. 1). https://doi.org/10.1115/HT2005-72517