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Title: In-situ temperature sensing of SOFC during anode reduction and cell operations using a multi-junction thermocouple network
Authors: Ranaweera, Manoj Prasanna
Kim, Jung-Sik
Issue Date: 2015
Publisher: © The Electrochemical Society
Citation: RANAWEERA, M.P. and KIM, J.S., 2015. In-situ temperature sensing of SOFC during anode reduction and cell operations using a multi-junction thermocouple network. ECS Transactions, 68 (1), pp.2637-2644
Abstract: Understanding in-situ temperature distribution of a SOFC stack while in operation is very important for its performance and degradation studies. The available efforts in literature are incapable of measuring the temperature of electrodes. The proposed multi-junction thermocouple network, which requires only 2N thermoelements for N<sup>2</sup> measuring points, can measure temperature directly from electrodes. A multi-junction thermocouple network having 9 measuring points was fabricated using K-type thermocouple wires (φ 0.5mm) for an in-situ measurement of the temperature distribution on a cathode (50mmx50mm, NextCell-5). The measurements were performed during an anode reduction process and during a normal cell operation while the air/fuel ratio varies. The gas temperature was measured simultaneously using a commercial K-type thermocouple from 7 mm adjacent to the cathode. The monitored cathode temperature via the in-situ sensors was directly correlated with the cell's OCV whilst the commercial thermocouple 7mm adjacent to the electrode showed a dull change to them.
Version: Accepted for publication
DOI: 10.1149/06801.2637ecst
URI: https://dspace.lboro.ac.uk/2134/20008
Publisher Link: http://dx.doi.org/10.1149/06801.2637ecst
ISSN: 1938-5862
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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