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Original Research Paper
The Error in Gas Temperature Measurements with Thermocouples: Application on an SOFC System Heat Exchanger
Article first published online: 6 FEB 2012
DOI: 10.1002/fuce.201100047
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Tsikonis, L., Van herle, J. and Favrat, D. (2012), The Error in Gas Temperature Measurements with Thermocouples: Application on an SOFC System Heat Exchanger. Fuel Cells, 12: 32–40. doi: 10.1002/fuce.201100047
Publication History
- Issue published online: 15 FEB 2012
- Article first published online: 6 FEB 2012
- Manuscript Accepted: 9 JAN 2012
- Manuscript Received: 19 MAR 2011
Funded by
- Swisselectric Research
- Swiss Federal Office of Energy
- Abstract
- References
- Cited By
Keywords:
- Fuel Cell Systems;
- Gas Temperature;
- Measurement Error;
- Radiation;
- Thermocouple;
- Thermal Management
Abstract
Aim of this work is to model and study the behavior of thermocouples as they are used in the measurement of gas temperatures in solid oxide fuel cell systems. Due to the high temperature regime in such systems, the effect of radiation and conduction from surrounding solids may bias the measurements with important consequences on control, performance, and cell durability. In order to study these effects a mathematical model of a working thermocouple was developed and it was integrated in that of a heat exchanger, which was part of a larger SOFC system. The enhanced heat exchanger's model was then validated with measurements from a test on a real system. The possibility to overcome the bias and to have a more correct approximation of the real gas temperatures is discussed.