THERMOPHYSICAL RESPONSE OF A SOLID-STATE THERMAL-WAVE PYROELECTRIC-FILM SENSOR TO NATURAL-GAS AND METHANE

Citation
Ja. Garcia et al., THERMOPHYSICAL RESPONSE OF A SOLID-STATE THERMAL-WAVE PYROELECTRIC-FILM SENSOR TO NATURAL-GAS AND METHANE, International journal of hydrogen energy, 21(9), 1996, pp. 761-764
Citations number
14
Categorie Soggetti
Energy & Fuels","Environmental Sciences","Physics, Atomic, Molecular & Chemical
ISSN journal
03603199
Volume
21
Issue
9
Year of publication
1996
Pages
761 - 764
Database
ISI
SICI code
0360-3199(1996)21:9<761:TROAST>2.0.ZU;2-Z
Abstract
A novel type of gas sensor based on a pyroelectric thin-film transduce r under a.c. thermal excitation was studied. The pyroelectric film is deposited onto a dielectric material (substrate) and this film is sand wiched between two metal electrodes. The low frequency thermal wave is generated by passing a current through a strip-shaped resistive film that is deposited on the opposite side of the substrate. The response of the sensor to natural gas and high purity methane was examined. It was found to be reversible, reproducible, and symmetric when the natur al gas was cycled. The sensor was able to detect a wide range of natur al gas and methane concentrations in nitrogen (2.5-100% vol.) and its response was linear with increasing concentrations for both gases. The results have important implications for the monitoring of natural gas composition and the development of fuel management systems in natural gas fueled vehicles. Copyright (C) 1996 International Association for Hydrogen Energy