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Application of a Robust Thermoelectric Gas Sensor in Firewood Combustion Exhausts

The quality of wood combustion processes can be effectively improved by achieving the automated control of the combustion air feed. For this purpose, continuous flue gas analysis using in situ sensors is essential. Besides the successfully introduced monitoring of the combustion temperature and the...

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Autores principales: Hagen, Gunter, Herrmann, Julia, Zhang, Xin, Kohler, Heinz, Hartmann, Ingo, Moos, Ralf
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10058951/
https://www.ncbi.nlm.nih.gov/pubmed/36991640
http://dx.doi.org/10.3390/s23062930
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author Hagen, Gunter
Herrmann, Julia
Zhang, Xin
Kohler, Heinz
Hartmann, Ingo
Moos, Ralf
author_facet Hagen, Gunter
Herrmann, Julia
Zhang, Xin
Kohler, Heinz
Hartmann, Ingo
Moos, Ralf
author_sort Hagen, Gunter
collection PubMed
description The quality of wood combustion processes can be effectively improved by achieving the automated control of the combustion air feed. For this purpose, continuous flue gas analysis using in situ sensors is essential. Besides the successfully introduced monitoring of the combustion temperature and the residual oxygen concentration, in this study, in addition, a planar gas sensor is suggested that utilizes the thermoelectric principle to measure the exothermic heat generated by the oxidation of unburnt reducing exhaust gas components such as carbon monoxide (CO) and hydrocarbons (C(x)H(y)). The robust design made of high-temperature stable materials is tailored to the needs of flue gas analysis and offers numerous optimization options. Sensor signals are compared to flue gas analysis data from FTIR measurements during wood log batch firing. In general, impressive correlations between both data were found. Discrepancies occur during the cold start combustion phase. They can be attributed to changes in the ambient conditions around the sensor housing.
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spelling pubmed-100589512023-03-30 Application of a Robust Thermoelectric Gas Sensor in Firewood Combustion Exhausts Hagen, Gunter Herrmann, Julia Zhang, Xin Kohler, Heinz Hartmann, Ingo Moos, Ralf Sensors (Basel) Article The quality of wood combustion processes can be effectively improved by achieving the automated control of the combustion air feed. For this purpose, continuous flue gas analysis using in situ sensors is essential. Besides the successfully introduced monitoring of the combustion temperature and the residual oxygen concentration, in this study, in addition, a planar gas sensor is suggested that utilizes the thermoelectric principle to measure the exothermic heat generated by the oxidation of unburnt reducing exhaust gas components such as carbon monoxide (CO) and hydrocarbons (C(x)H(y)). The robust design made of high-temperature stable materials is tailored to the needs of flue gas analysis and offers numerous optimization options. Sensor signals are compared to flue gas analysis data from FTIR measurements during wood log batch firing. In general, impressive correlations between both data were found. Discrepancies occur during the cold start combustion phase. They can be attributed to changes in the ambient conditions around the sensor housing. MDPI 2023-03-08 /pmc/articles/PMC10058951/ /pubmed/36991640 http://dx.doi.org/10.3390/s23062930 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hagen, Gunter
Herrmann, Julia
Zhang, Xin
Kohler, Heinz
Hartmann, Ingo
Moos, Ralf
Application of a Robust Thermoelectric Gas Sensor in Firewood Combustion Exhausts
title Application of a Robust Thermoelectric Gas Sensor in Firewood Combustion Exhausts
title_full Application of a Robust Thermoelectric Gas Sensor in Firewood Combustion Exhausts
title_fullStr Application of a Robust Thermoelectric Gas Sensor in Firewood Combustion Exhausts
title_full_unstemmed Application of a Robust Thermoelectric Gas Sensor in Firewood Combustion Exhausts
title_short Application of a Robust Thermoelectric Gas Sensor in Firewood Combustion Exhausts
title_sort application of a robust thermoelectric gas sensor in firewood combustion exhausts
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10058951/
https://www.ncbi.nlm.nih.gov/pubmed/36991640
http://dx.doi.org/10.3390/s23062930
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