A Versatile Capacitive Sensing Platform for the Assessment of the Composition in Gas Mixtures

The energy market is facing a major transition, in which natural gas and renewable gasses will play an important role. However, changing gas sources and compositions will force the gas transporters, gas engine manufacturers, and gas grid operators to monitor the gas quality in a more intensive way. This leads to the need for lower cost, smaller, and easy to install gas quality sensors. A new approach is proposed in this study that is based on the chemical interactions of the various gas components and responsive layers applied to an array of capacitive interdigitated electrodes. For Liquid Natural Gas (LNG), containing a relative high concentration of higher hydrocarbons, an array of ten capacitive chips is proposed, that is sufficient to calculate the full composition, and can be used to calculate energy parameters, such as Wobbe Index, Calorific Value, and Methane Number. A first prototype was realized that was small enough to be inserted in low and medium pressure gas pipes and LNG engine fuel lines. Adding the pressure and temperature data to the chip readings enables the determination of the concentrations of the various alkanes, hydrogen, nitrogen, and carbon dioxide, including small fluctuations in water vapor pressure. The sensitivity and selectivity of the new sensor is compared to a compact analyzer employing tunable filter infrared spectrometry.

[1]  Robert Rusinek,et al.  Identification of Volatile Organic Compounds and Their Concentrations Using a Novel Method Analysis of MOS Sensors Signal. , 2019, Journal of food science.

[2]  Chih-Wei Tsai,et al.  The effect of synthesis temperature on the particle size of nano-ZIF-8 , 2016 .

[3]  Chan Seung Park,et al.  Development of a fuel sensor technology for a Variable-blend Natural Gas Vehicle , 2016 .

[4]  C. Norton,et al.  High pressure and temperature optical flow cell for near-infra-red spectroscopic analysis of gas mixtures. , 2014, The Review of scientific instruments.

[5]  A. Boersma,et al.  Zeolites as coating materials for Fiber Bragg Grating chemical sensors for extreme conditions , 2016 .

[6]  Yasser M. Sabry,et al.  Optical Gas Sensing Based on MEMS FTIR Spectrometers , 2017 .

[7]  Jürgen Popp,et al.  Fiber-enhanced Raman multigas spectroscopy: a versatile tool for environmental gas sensing and breath analysis. , 2014, Analytical chemistry.

[8]  J. Jacob,et al.  Characterization of fuel gases with fiber-enhanced Raman spectroscopy , 2019, Analytical and Bioanalytical Chemistry.

[9]  Reinoud F. Wolffenbuttel,et al.  The Miniaturization of an Optical Absorption Spectrometer for Smart Sensing of Natural Gas , 2017, IEEE Transactions on Industrial Electronics.

[10]  Johannes Kiefer,et al.  Recent Advances in the Characterization of Gaseous and Liquid Fuels by Vibrational Spectroscopy , 2015 .

[11]  Qing Yang,et al.  MEMS-Based Smart Gas Metering for Internet of Things , 2017, IEEE Internet of Things Journal.

[12]  G. Righini,et al.  Optical Gas Sensing , 2009 .

[13]  G. McTaggart-Cowan,et al.  Impacts and Mitigation of Varying Fuel Composition in a Natural Gas Heavy-Duty Engine , 2017 .

[14]  Yizhong Huang,et al.  Single-Nanowire Fuse for Ionization Gas Detection , 2019, Sensors.

[15]  A. Leipertz,et al.  Determination of gas composition in a biogas plant using a Raman-based sensor?system , 2014 .

[16]  Robert Rusinek,et al.  Application of an electronic nose for determination of pre‐pressing treatment of rapeseed based on the analysis of volatile compounds contained in pressed oil , 2019, International Journal of Food Science & Technology.

[17]  Ryan P. Lively,et al.  Effect of Nonsolvent Treatments on the Microstructure of PIM-1 , 2015 .

[18]  Jussi Mäkynen,et al.  Advanced MEMS spectral sensor for the NIR , 2015, Photonics West - Optoelectronic Materials and Devices.

[19]  Winnie E. Svendsen,et al.  Coplanar Electrode Layout Optimized for Increased Sensitivity for Electrical Impedance Spectroscopy , 2014, Micromachines.

[20]  Matteo Cherchi,et al.  Integrated multi-wavelength mid-IR light source for gas sensing , 2018, Commercial + Scientific Sensing and Imaging.

[21]  Joachim Schenk,et al.  Species Related Gas Tracking in Distribution Grids , 2018, 2018 26th European Signal Processing Conference (EUSIPCO).

[22]  Yang Xu,et al.  Review on Smart Gas Sensing Technology , 2019, Sensors.

[23]  Rob Jansen,et al.  Fiber Bragg distributed chemical sensor , 2011, 2011 IEEE SENSORS Proceedings.