A Comparison of the Proton Exchange Membrane Fuel Cell Water Balance Measured Simultaneously with the Water Knock-out Method and Hot Wire Anemometry

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

Resumé

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.
OriginalsprogEngelsk
TidsskriftECS Transactions
Vol/bind86
Udgave nummer13
Sider (fra-til)199-209
Antal sider11
ISSN1938-6737
DOI
StatusUdgivet - 2018
BegivenhedECS and SMEQ Joint International Meeting - The Moon Palace Resort, Cancun, Mexico
Varighed: 30 sep. 20184 okt. 2018
https://www.electrochem.org/aimes2018

Konference

KonferenceECS and SMEQ Joint International Meeting
LokationThe Moon Palace Resort
LandMexico
ByCancun
Periode30/09/201804/10/2018
Internetadresse

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Proton exchange membrane fuel cells (PEMFC)
Wire
Water
Anodes
Fuel cells
Cathodes
Current density
Defects
Gases

Citer dette

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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.",
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A Comparison of the Proton Exchange Membrane Fuel Cell Water Balance Measured Simultaneously with the Water Knock-out Method and Hot Wire Anemometry. / Al Shakhshir, Saher; Liso, Vincenzo; Berning, Torsten; Kær, Søren Knudsen.

I: ECS Transactions, Bind 86, Nr. 13, 2018, s. 199-209.

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

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AB - 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.

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