Thermal Balance Analysis of a Micro-Thermoelectric Gas Sensor Using Catalytic Combustion of Hydrogen
A thermoelectric gas sensor (TGS) with a combustion catalyst is a calorimetric sensor that changes the small heat of catalytic combustion into a signal voltage. We analyzed the thermal balance of a TGS to quantitatively estimate the sensor parameters. The voltage signal of a TGS was simulated, and t...
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MDPI AG
2014-01-01
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author | Daisuke Nagai Takafumi Akamatsu Toshio Itoh Noriya Izu Woosuck Shin |
author_facet | Daisuke Nagai Takafumi Akamatsu Toshio Itoh Noriya Izu Woosuck Shin |
author_sort | Daisuke Nagai |
collection | DOAJ |
description | A thermoelectric gas sensor (TGS) with a combustion catalyst is a calorimetric sensor that changes the small heat of catalytic combustion into a signal voltage. We analyzed the thermal balance of a TGS to quantitatively estimate the sensor parameters. The voltage signal of a TGS was simulated, and the heat balance was calculated at two sections across the thermoelectric film of a TGS. The thermal resistances in the two sections were estimated from the thermal time constants of the experimental signal curves of the TGS. The catalytic combustion heat Qcatalyst required for 1 mV of ∆Vgas was calculated to be 46.1 μW. Using these parameters, we find from simulations for the device performance that the expected Qcatalyst for 200 and 1,000 ppm H2 was 3.69 μW and 11.7 μW, respectively. |
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issn | 1424-8220 |
language | English |
last_indexed | 2024-04-13T09:19:58Z |
publishDate | 2014-01-01 |
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spelling | doaj.art-88b8c96e29e340e1bc858458c272225a2022-12-22T02:52:37ZengMDPI AGSensors1424-82202014-01-011411822183410.3390/s140101822s140101822Thermal Balance Analysis of a Micro-Thermoelectric Gas Sensor Using Catalytic Combustion of HydrogenDaisuke Nagai0Takafumi Akamatsu1Toshio Itoh2Noriya Izu3Woosuck Shin4AIST, 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, JapanAIST, 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, JapanAIST, 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, JapanAIST, 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, JapanAIST, 2266-98 Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, JapanA thermoelectric gas sensor (TGS) with a combustion catalyst is a calorimetric sensor that changes the small heat of catalytic combustion into a signal voltage. We analyzed the thermal balance of a TGS to quantitatively estimate the sensor parameters. The voltage signal of a TGS was simulated, and the heat balance was calculated at two sections across the thermoelectric film of a TGS. The thermal resistances in the two sections were estimated from the thermal time constants of the experimental signal curves of the TGS. The catalytic combustion heat Qcatalyst required for 1 mV of ∆Vgas was calculated to be 46.1 μW. Using these parameters, we find from simulations for the device performance that the expected Qcatalyst for 200 and 1,000 ppm H2 was 3.69 μW and 11.7 μW, respectively.http://www.mdpi.com/1424-8220/14/1/1822thermoelectric gas sensorcombustion catalystthermal balance |
spellingShingle | Daisuke Nagai Takafumi Akamatsu Toshio Itoh Noriya Izu Woosuck Shin Thermal Balance Analysis of a Micro-Thermoelectric Gas Sensor Using Catalytic Combustion of Hydrogen Sensors thermoelectric gas sensor combustion catalyst thermal balance |
title | Thermal Balance Analysis of a Micro-Thermoelectric Gas Sensor Using Catalytic Combustion of Hydrogen |
title_full | Thermal Balance Analysis of a Micro-Thermoelectric Gas Sensor Using Catalytic Combustion of Hydrogen |
title_fullStr | Thermal Balance Analysis of a Micro-Thermoelectric Gas Sensor Using Catalytic Combustion of Hydrogen |
title_full_unstemmed | Thermal Balance Analysis of a Micro-Thermoelectric Gas Sensor Using Catalytic Combustion of Hydrogen |
title_short | Thermal Balance Analysis of a Micro-Thermoelectric Gas Sensor Using Catalytic Combustion of Hydrogen |
title_sort | thermal balance analysis of a micro thermoelectric gas sensor using catalytic combustion of hydrogen |
topic | thermoelectric gas sensor combustion catalyst thermal balance |
url | http://www.mdpi.com/1424-8220/14/1/1822 |
work_keys_str_mv | AT daisukenagai thermalbalanceanalysisofamicrothermoelectricgassensorusingcatalyticcombustionofhydrogen AT takafumiakamatsu thermalbalanceanalysisofamicrothermoelectricgassensorusingcatalyticcombustionofhydrogen AT toshioitoh thermalbalanceanalysisofamicrothermoelectricgassensorusingcatalyticcombustionofhydrogen AT noriyaizu thermalbalanceanalysisofamicrothermoelectricgassensorusingcatalyticcombustionofhydrogen AT woosuckshin thermalbalanceanalysisofamicrothermoelectricgassensorusingcatalyticcombustionofhydrogen |