List of Division publications with links

2018-03-08 08:27 - Monitoring the Wobbe Index of Natural Gas Using Fiber-Enhanced Raman Spectroscopy

Vincenz Sandfort, Barbara M. Trabold, Amir Abdolvand, Carsten Bolwien, Philip St.J. Russell, Jürgen Wöllenstein, and Stefan Palzer, Sensors 2017, 17(12), 2714

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.