Abstract
The water balance of a proton exchange membrane fuel cell (PEMFC) can provide valuable insight into the state of the fuel cell. The most commonly applied method to measure the water balance is the knock-out method where the flaw gas of anode and/or cathode is cooled down and the condensed amount of water is weighed and compared to the amount of product water, while over the past years our group has developed a new method by applying hot wire anemometry at the anode outlet. In this work, a comparison between the knock-out and hot wire methods is experimentally demonstrated for 3.8 kW water-cooled PEMFC stack. The stack is run under wet conditions at different current densities and stoichiometric ratios. The hot-wire method has shown a higher sensitivity and an instant response for the measured water balance. Meanwhile, the knock-out method showed less sensitivity, much slower time response, and higher inaccuracies.
Originalsprog | Engelsk |
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Tidsskrift | ECS Transactions |
Vol/bind | 86 |
Udgave nummer | 13 |
Sider (fra-til) | 199-209 |
Antal sider | 11 |
ISSN | 1938-6737 |
DOI | |
Status | Udgivet - 2018 |
Begivenhed | ECS and SMEQ Joint International Meeting - The Moon Palace Resort, Cancun, Mexico Varighed: 30 sep. 2018 → 4 okt. 2018 https://www.electrochem.org/aimes2018 |
Konference
Konference | ECS and SMEQ Joint International Meeting |
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Lokation | The Moon Palace Resort |
Land/Område | Mexico |
By | Cancun |
Periode | 30/09/2018 → 04/10/2018 |
Internetadresse |