Refrigeration – Utilizing fuel as refrigerant
Patent
1994-02-23
1995-06-06
Capossela, Ronald C.
Refrigeration
Utilizing fuel as refrigerant
62 501, 123525, 123527, F25B 1900
Patent
active
054211620
ABSTRACT:
Liquid natural gas is pumped into a main tank until the main tank is completely filled with liquid. Once filled, high pressure gas is pumped into the main tank. This high pressure gas forces the liquid from the main tank into an overflow tank until the liquid level in the main tank reaches a predetermined level. High pressure gas is then pumped through the main tank to the overflow tank until the LNG in the overflow tank is saturated at a pressure slightly higher than the pressure needed at the use device. Once the desired pressure is achieved the delivery of LNG to the delivery system is stopped. LNG is initially delivered from the overflow tank to the use device as a high pressure gas. Some of the high pressure gas being delivered from the overflow tank is diverted from the use device to saturate the LNG in the main tank at the desired pressure. The LNG will be delivered from the overflow tank is depleted and then the LNG will be delivered from the main tank which will have been saturated by the high pressure gas from the main tank.
REFERENCES:
patent: 2487863 (1949-11-01), Garretson
patent: 2956412 (1959-01-01), Loebeck
patent: 3710584 (1973-01-01), Leonard
patent: 5127230 (1992-07-01), Neeser et al.
patent: 5163409 (1992-11-01), Gusfatson et al.
Abstract; "LNG-The Sensible Alternative For Medium To Heavy Duty Vehicles"; by George W. Kalet; Oct., 1991.
Gustafson Keith
Preston Duane
Capossela Ronald C.
Minnesota Valley Engineering, Inc.
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