Enhanced cooldown of multiple cryogenic refrigerators supplied b

Details Enhanced cooldown of multiple cryogenic refrigerators supplied b Enhanced cooldown of multiple cryogenic refrigerators supplied b

1997-01-02

1998-07-07

Capossela, Ronald C.

Refrigeration

Gas compression, heat regeneration and expansion, e.g.,...

62 555, F25B 900

Patent

active

057751099

ABSTRACT:
A method for regulating the cooldown of multiple cryogenic refrigerators supplied with compressed refrigerant from a common compressor includes the following steps. The cooldown of the refrigerators is monitored. The cooldown of at least one refrigerator is then governed to regulate the gas flow distributed from the compressor to each of the refrigerators to enhance the cooldown of an individual refrigerator. Governing a refrigerator to achieve the objectives of this method can be achieved by various processes. These processes include supplying heat to the refrigerator, slowing the speed of the displacer in the refrigerator, halting the motion of the displacer, and profiling the speed of the displacer as a function of the first and second-stage temperatures. A system for performing the above-described method includes a compressor; a plurality of refrigerators, each receiving compressed gas from the compressor; and a network terminal programmed to govern the cooldown of at least one refrigerator to accelerate the cooldown of another refrigerator.

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