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Title: Monitoring the Wobbe Index of Natural Gas Using Fiber-Enhanced Raman Spectroscopy
Authors: Sandfort, Vincenz
Trabold, Barbara M.
Abdolvand, Amir
Bolwien, Carsten
Russell, Philip St. J.
Wöllenstein, Jürgen
Palzer, Stefan
Keywords: Raman Spectroscopy
Wobbe Index
Issue Date: 2017
Source: Sandfort, V., Trabold, B. M., Abdolvand, A., Bolwien, C., Russell, P. S. J., Wöllenstein, J., et al. (2017). Monitoring the Wobbe Index of Natural Gas Using Fiber-Enhanced Raman Spectroscopy. Sensors, 17(12), 2714-.
Series/Report no.: Sensors
Abstract: The fast and reliable analysis of the natural gas composition requires the simultaneous quantification of numerous gaseous components. To this end, fiber-enhanced Raman spectroscopy is a powerful tool to detect most components in a single measurement using a single laser source. However, practical issues such as detection limit, gas exchange time and background Raman signals from the fiber material still pose obstacles to utilizing the scheme in real-world settings. This paper compares the performance of two types of hollow-core photonic crystal fiber (PCF), namely photonic bandgap PCF and kagomé-style PCF, and assesses their potential for online determination of the Wobbe index. In contrast to bandgap PCF, kagomé-PCF allows for reliable detection of Raman-scattered photons even below 1200 cm−1, which in turn enables fast and comprehensive assessment of the natural gas quality of arbitrary mixtures.
DOI: 10.3390/s17122714
Rights: © 2017 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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