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
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