Absorption spectroscopy based high-speed oxygen concentration measurements at elevated gas temperatures

Gurneesh S. Jatana; Anthony K. Perfetto; Samuel C. Geckler; William P. Partridge

doi:10.1016/j.snb.2019.04.143

Absorption spectroscopy based high-speed oxygen concentration measurements at elevated gas temperatures

Gurneesh S. Jatana, Anthony K. Perfetto, Samuel C. Geckler, William P. Partridge

Applied Catalysis&Emissions Res. Group

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

31 Scopus citations

Abstract

A sensor based on tunable diode laser absorption spectroscopy (TDLAS)has been developed for concentration measurements in high-temperature (up to 800 K)gas streams; while the sensor measures gas oxygen and water concentration, temperature and pressure, this work focuses on the challenges and solutions to transient oxygen measurement. A 760-nm diode laser was used to probe a pair of oxygen absorption transitions, and a Herriott cell based multi-pass arrangement was utilized to compensate for the extremely weak oxygen absorption as well as the high gas temperature. This multi-pass arrangement provides a 4297.4-mm absorption path length across a 76.2-mm diameter duct, and an O₂ detection limit ([O₂]where SNR=1)of ca. 0.1%. Laboratory validation of the HITRAN spectral parameters of the chosen absorption transitions was performed over a range of high temperatures and oxygen concentrations relevant to engine-exhaust applications. The insensitivity of the Herriott cell arrangement to vibrations and spatial temperature gradients was demonstrated. Results from applications to single- and multi-cylinder engine exhaust are presented and demonstrate the new sensor's ability to measure fast intra-cycle gas-property transients, and provide insights relevant to advancing internal-combustion-engine technology.

Original language	English
Pages (from-to)	173-182
Number of pages	10
Journal	Sensors and Actuators, B: Chemical
Volume	293
DOIs	https://doi.org/10.1016/j.snb.2019.04.143
State	Published - Aug 15 2019

Funding

This research was funded by the US DOE Vehicle Technologies Office via a Cooperative Research and Development Agreement between ORNL and Cummins Inc. The authors would like to thank DOE Program Managers Gurpreet Singh and Mike Weismiller.

Funders	Funder number
U.S. Department of Energy
Oak Ridge National Laboratory
Cummins Incorporated

Keywords

Absorption
Herriott-cell
High-speed
High-temperature
Oxygen
Water vapor

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title = "Absorption spectroscopy based high-speed oxygen concentration measurements at elevated gas temperatures",

abstract = "A sensor based on tunable diode laser absorption spectroscopy (TDLAS)has been developed for concentration measurements in high-temperature (up to 800 K)gas streams; while the sensor measures gas oxygen and water concentration, temperature and pressure, this work focuses on the challenges and solutions to transient oxygen measurement. A 760-nm diode laser was used to probe a pair of oxygen absorption transitions, and a Herriott cell based multi-pass arrangement was utilized to compensate for the extremely weak oxygen absorption as well as the high gas temperature. This multi-pass arrangement provides a 4297.4-mm absorption path length across a 76.2-mm diameter duct, and an O2 detection limit ([O2]where SNR=1)of ca. 0.1%. Laboratory validation of the HITRAN spectral parameters of the chosen absorption transitions was performed over a range of high temperatures and oxygen concentrations relevant to engine-exhaust applications. The insensitivity of the Herriott cell arrangement to vibrations and spatial temperature gradients was demonstrated. Results from applications to single- and multi-cylinder engine exhaust are presented and demonstrate the new sensor's ability to measure fast intra-cycle gas-property transients, and provide insights relevant to advancing internal-combustion-engine technology.",

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AU - Jatana, Gurneesh S.

AU - Perfetto, Anthony K.

AU - Geckler, Samuel C.

AU - Partridge, William P.

PY - 2019/8/15

Y1 - 2019/8/15

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AB - A sensor based on tunable diode laser absorption spectroscopy (TDLAS)has been developed for concentration measurements in high-temperature (up to 800 K)gas streams; while the sensor measures gas oxygen and water concentration, temperature and pressure, this work focuses on the challenges and solutions to transient oxygen measurement. A 760-nm diode laser was used to probe a pair of oxygen absorption transitions, and a Herriott cell based multi-pass arrangement was utilized to compensate for the extremely weak oxygen absorption as well as the high gas temperature. This multi-pass arrangement provides a 4297.4-mm absorption path length across a 76.2-mm diameter duct, and an O2 detection limit ([O2]where SNR=1)of ca. 0.1%. Laboratory validation of the HITRAN spectral parameters of the chosen absorption transitions was performed over a range of high temperatures and oxygen concentrations relevant to engine-exhaust applications. The insensitivity of the Herriott cell arrangement to vibrations and spatial temperature gradients was demonstrated. Results from applications to single- and multi-cylinder engine exhaust are presented and demonstrate the new sensor's ability to measure fast intra-cycle gas-property transients, and provide insights relevant to advancing internal-combustion-engine technology.

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KW - Water vapor

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Absorption spectroscopy based high-speed oxygen concentration measurements at elevated gas temperatures

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