Localization and Quantification of Trace-gas Fugitive Emissions Using a Portable Optical Spectrometer

Conference · Sun Apr 15 00:00:00 EDT 2018

DOI:https://doi.org/10.1117/12.2305174· OSTI ID:1433075

Zhang, Eric ^[1]; Teng, Chu ^[2]; van Kessel, Theodore ^[1]; Klein, Levente ^[1]; Muralidhar, Ramachandran ^[1]; Xiong, Chi ^[1]; Martin, Yves ^[1]; Orcutt, Jason ^[1]; Khater, Marwan ^[1]; Schares, Laurent ^[1]; Barwicz, Tymon ^[1]; Marchack, Nathan ^[1]; Kamlapurkar, Swetha ^[1]; Engelmann, Sebastian ^[1]; Wysocki, Gerard ^[2]; Sosa, Norma ^[1]; Green, William ^[1]

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1. IBM, Yorktown Heights, NY (United States). Thomas J. Watson Research Center
2. Princeton Univ., NJ (United States). Electrical Engineering Dept.

We present a portable optical spectrometer for fugitive emissions monitoring of methane (CH4). The sensor operation is based on tunable diode laser absorption spectroscopy (TDLAS), using a 5 cm open path design, and targets the 2ν3 R(4) CH4 transition at 6057.1 cm-1 (1651 nm) to avoid cross-talk with common interfering atmospheric constituents. Sensitivity analysis indicates a normalized precision of 2.0 ppmv∙Hz-1/2, corresponding to a noise-equivalent absorption (NEA) of 4.4×10-6 Hz-1/2 and minimum detectible absorption (MDA) coefficient of αmin = 8.8×10-7 cm-1∙Hz-1/2. Our TDLAS sensor is deployed at the Methane Emissions Technology Evaluation Center (METEC) at Colorado State University (CSU) for initial demonstration of single-sensor based source localization and quantification of CH4 fugitive emissions. The TDLAS sensor is concurrently deployed with a customized chemi-resistive metal-oxide (MOX) sensor for accuracy benchmarking, demonstrating good visual correlation of the concentration time-series. Initial angle-of-arrival (AOA) results will be shown, and development towards source magnitude estimation will be described.

• Research Organization: IBM Research
• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: AR0000540
• OSTI ID: 1433075
• Report Number(s): DOE-IBM-0000540-13
• Resource Relation: Conference: SPIE Defense and Commercial Sensing (DCS) 2018, Orlando, FL, April 15-19, 2018.; Related Information: E. J. Zhang, C. C. Teng, T. G. van Kessel, L. Klein, R. Muralidhar, C. Xiong, Y. Martin, J. S. Orcutt, M. Khater, L. Schares, T. Barwicz, N. Marchack, S. Kamlapurkar, S. Engelmann, G. Wysocki, N. Sosa, and W. M. J. Green, “Localization and Quantification of Trace-gas Fugitive Emissions Using a Portable Optical Spectrometer,” Paper 10629-33, SPIE DCS Conference, Orlando, Florida, April 2018.
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS