Method and system for metered supply of methanol and/or water to

Details Method and system for metered supply of methanol and/or water to Method and system for metered supply of methanol and/or water to

1995-07-20

1998-06-16

Gorgos, Kathryn L.

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 19, 429 25, H01M 804

Patent

active

057667861

ABSTRACT:
A method and a system meters a supply of methanol and/or water out of a storage reservoir to a fuel-cell system by way of a conveying conduit with a metering valve. A constant mass flow is conveyed out of the storage reservoir into the conveying conduit via a conveying pump. The differential pressure between the conveying conduit and fuel-cell system is set at a predetermined value via a differential-pressure controller which is arranged in a return conduit provided between the conveying conduit and storage reservoir. The methanol and/or water supplied can be set, for example, by varying the opening and closing times of a solenoid valve. A second metering stage can be provided in the return conduit downstream of the first metering stage. When two separate metering systems are used, a common pump motor can be employed.

REFERENCES:
patent: 3745047 (1973-07-01), Fanciullo et al.
patent: 4075396 (1978-02-01), Grehier
patent: 4226919 (1980-10-01), Stuwe
patent: 4243731 (1981-01-01), Cheron
patent: 4810597 (1989-03-01), Kumagai et la.
patent: 5248566 (1993-09-01), Kumar et al.
patent: 5397656 (1995-03-01), Morimoto et al.

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