Determination of the alcohol concentration in the...

Details Determination of the alcohol concentration in the... Determination of the alcohol concentration in the...

H - Electricity

01

M

H01M 8/04 (2006.01) G01N 11/08 (2006.01)

Patent

CA 2385640

The invention relates to a method for determining an alcohol concentration in an alcohol/water-mixture of fuel cells operated using said mixture, in particular direct-methanol-fuel cells. The alcohol/water-mixture is pumped through a narrow channel. The differential pressure between the inlet and outlet of said narrow channel, optionally the flow speed of the mixture through the narrow channel and the alcohol concentration thereof are determined.

L'invention concerne un procédé de détermination de la concentration d'alcool dans un mélange alcool/eau faisant fonctionner des piles à combustible, en particulier des piles à combustible direct à méthanol. Selon ledit procédé, le mélange alcool/eau est pompé de façon qu'il passe par un étranglement, et la pression différentielle entre l'entrée et la sortie de cet étranglement, et, éventuellement, le débit du mélange à travers cet étranglement sont mesurés, la concentration d'alcool étant déterminée à partir des résultats de ces mesures.

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