Method for adjusting the fuel concentration of a fuel...

H - Electricity – 01 – M

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H01M 8/00 (2006.01) H01M 8/04 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2348861

The invention relates to a method for adjusting the fuel concentration of a fuel mixture of a fuel cell using alcohol or ether as fuel and a fuel cell system suitable for said method. Fuel cells in which an alcohol or ether as fuel is directly reacted are operated with a fuel mixture of fuel and water in which the fuel usually has a concentration of between 1 vol.- % and 5 vol.- %. The aim of the invention is to provide a fuel concentration which is as constant as possible. For the above-mentioned concentration range, however, a sufficiently exact and/or fast method for directly measuring the fuel concentration has not been known. According to the invention, the fuel concentration is adjusted to a constant value by means of a specific probe (13). Said probe (13) has a measuring chamber (16) and a membrane (14) closing the measuring chamber (16). Fuel and water permeate the membrane (14). The membrane (14) is selectively permeable in such a way that a measuring mixture is formed in the measuring chamber (16) in which the alcohol concentration is less than 1 vol.- % or more than 5 vol.- %. Suitable fuel sensors (17) can be used for said concentration ranges. The invention also relates to the operation of fuel cells using alcohol or ether as fuels, and water.

L'invention concerne un procédé de réglage de la concentration en combustible d'un mélange combustible d'une pile à combustible, ce mélange contenant un alcool ou un éther, comme combustible, et de l'eau. Les piles à combustible dans lesquelles un alcool ou un éther, utilisé comme combustible, réagit directement, fonctionnent avec un mélange combustible composé d'un combustible et d'eau. Ce combustible a généralement une concentration comprise entre 1 % en volume et 5 % en volume. On s'efforce de pouvoir garantir une concentration en combustible si possible constante. Toutefois, on ne connaît pas dans la plage de concentration susmentionnée de procédé suffisamment précis et/ou rapide pour mesurer la concentration directe. La concentration de combustible est réglée à une valeur constante par une sonde spéciale (13). Cette sonde (13) présente une chambre de mesure (16) et une membrane (14) fermant la chambre de mesure (16). Le combustible et l'eau traversent la membrane (14), la membrane (14) étant perméable de façon sélective de telle façon que l'on obtienne dans la chambre de mesure (16) un mélange de mesure dont la concentration d'alcool est inférieure à 1 % en volume ou supérieure à 5 % en volume. Pour ces plages de concentration, on peut utiliser des détecteurs de combustible (17) appropriés. L'invention concerne l'utilisation d'alcool ou d'éther, comme combustible, ainsi que des piles à combustible utilisant l'eau.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for adjusting the fuel concentration of a fuel... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for adjusting the fuel concentration of a fuel..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for adjusting the fuel concentration of a fuel... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2021653

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.