Refrigeration – Storage of solidified or liquified gas – Liquified gas transferred as liquid
Patent
1993-08-18
1995-11-14
Kilner, Christopher
Refrigeration
Storage of solidified or liquified gas
Liquified gas transferred as liquid
62 491, 62 501, 141 4, F17C 702, F17C 1302, B65B 3100
Patent
active
054655838
ABSTRACT:
An automated fueling facility allows untrained persons to safely dispense homogeneous phase liquid methane from a cryogenic storage tank into a motor vehicle. The fueling facility automatically maintains pressure on the liquid methane within a predetermined safe operating range using methane gas trapped in the cryogenic storage tank. The pressure on the liquid methane is at least set equal to a set pressure equal to the sum of the saturation pressure of the liquid methane plus an additional amount to help to ensure that it remains in a fully saturated condition after exposure to any pressure losses as the fluid enters the pump. A pump is cooled by placing it in the storage tank and circulating liquid methane through the pump and back into the storage tank. A dispenser, including nozzle for connecting to a motor vehicle, is cooled by circulating liquid through the nozzle and back to the storage tank through a receptacle on the dispenser to which the nozzle is connected. No dispensing of liquid methane into a motor vehicle tank is allowed to begin without the pressure of the liquid methane being within the operating range and the pump and nozzle pre-cooled. No additional pressure is built in the storage tank than is necessary to bring the pressure of the liquid methane to the set pressure.
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Hubbard Marc A.
Hydra Rig, Inc.
Kilner Christopher
LandOfFree
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