Method and apparatus for the automatic refilling of a liquid hyd

Refrigeration – Utilizing fuel as refrigerant

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62 48, 62 55, 123541, 123DIG12, F25B 700

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active

046088300

ABSTRACT:
In order to achieve efficient refueling with a method and an apparatus for the automatic refilling of a liquid hydrogen tank in a motor vehicle in which the tank is connected to a liquid hydrogen supply line as well as a hydrogen gas return line, it is proposed that prior to commencement of refilling the liquid hydrogen tank the liquid hydrogen supply line in the vehicle be connected to the hydrogen gas return line and that liquid hydrogen be passed through said lines in order to cool them whereby only after they have been cooled is the liquid hydrogen supply line connected to the liquid hydrogen tank. For this purpose, a bypass line connecting the liquid hydrogen supply line to the hydrogen gas return line is provided in the motor vehicle, and electrically operable closing valves are provided in the liquid hydrogen supply line downstream of where the bypass line branches as well as in the bypass line.

REFERENCES:
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patent: 3783849 (1974-01-01), Bramfitt
patent: 4292062 (1981-09-01), Dinulesu et al.
patent: 4421087 (1983-12-01), Schuurman
patent: 4503832 (1985-03-01), Pefley et al.
patent: 4520763 (1985-06-01), Lynch et al.
Peschka: "Operating Characteristics of a LH.sub.2 -Fuelled Automotive Vehe & of a Semi Automotive LH.sub.2 Refuelling Station", International Journal of Hydrogen Energy, vol. 7(8), 661-669 (1981).
Peschka et al. "Cryogenic Hydrogen Storage and Refueling for Automobiles", Proceedings of the Second World Hydrogen Energy Conference; Zurich, Switzerland, Aug. 21-24, 1978, vol. 4, 1917-1928.

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