Control method for a cryogenic unit

Details Control method for a cryogenic unit Control method for a cryogenic unit

1998-07-10

2000-06-20

Capossela, Ronald

Refrigeration

Storage of solidified or liquified gas

Liquified gas transferred as liquid

F17C 902

Patent

active

060763604

ABSTRACT:
Apparatus and methods for improving efficiency of a temperature conditioning system which employs a cryogenic liquid. A vapor powered ventilation motor is normally powered by vapor from the low pressure end of the evaporation coils. However, supplemental vapor is provided at start-up to provide immediate ventilation. In addition, vapor which bleeds off valves is cycled through the vapor powered motor or used to maintain a slight positive pressure when the system is shut down.

REFERENCES:
patent: 3058317 (1962-10-01), Putman
patent: 3121999 (1964-02-01), Kasbohm et al.
patent: 3552134 (1971-01-01), Arenson
patent: 5285644 (1994-02-01), Roehrich et al.
patent: 5365744 (1994-11-01), Viegas et al.
patent: 5598709 (1997-02-01), Viegas et al.

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