Abstract: A cryostat in which a venting conduit is connected to a reservoir of the cryostat but no venting of cryogen within the reservoir can occur while fluid is flowing under pressure within the heat exchanger of the cryostat.
Abstract: A method and apparatus for cooling and filling a cryogen reservoir with liquid cryogen from the gas/liquid discharge of a heat exchanger. The cryogen reservoir has a cryogen liquid retaining material and a temperature sensing means remote from the heat exchanger. The gas/liquid discharge is located in a region within the reservoir proximate to the temperature sensing means. At least a portion of the discharge is passed through the liquid retaining material to be absorbed, thereby.
Abstract: Thermal storage matrices, particularly useful in conjunction with the cooling of the infra-red detectors employed in space related or missile guidance systems are taught. Also taught are cryostat assemblies, including such thermal storage assemblies.
Abstract: A counter flow heat exchanger comprising a plurality of tubes disposed in a bundle array or tube within tube configuration to enhance heat transfer between high and low pressure tubes in the array or tube in tube configuration. Also disclosed are a method of increasing the heat transfer capacity of a tube bundle heat exchanger and a liquid helium temperature refrigerator or a reliquefier utilizing the heat exchanger.
Type:
Grant
Filed:
July 16, 1987
Date of Patent:
November 22, 1988
Assignee:
APD Cryogenics
Inventors:
Ralph C. Longsworth, William A. Steyert
Abstract: A heat exchanger for a fast cooldown cryostat having high pressure and low pressure flow paths wherein a low pressure flow path is defined by a finely divided matrix which in turn defines a plurality of flow paths and said high pressure flow path is disposed in heat exchange relationshp to said matrix.
Type:
Grant
Filed:
July 16, 1987
Date of Patent:
November 1, 1988
Assignee:
APD Cryogenics
Inventors:
William A. Steyert, Ralph C. Longsworth
Abstract: A counter flow heat exchanger comprising a plurality of tubes disposed in a bundle array or tube within tube configuration to enhance heat transfer between high and low pressure tubes in the array or tube in tube configuration. Also disclosed are a method of increasing the heat transfer capacity of a tube bundle heat exchanger and a liquid helium temperature refrigerator or a reliquefier utilizing the heat exchanger.
Type:
Grant
Filed:
January 14, 1986
Date of Patent:
October 6, 1987
Assignee:
APD Cryogenics Inc.
Inventors:
Ralph C. Longsworth, William A. Steyert
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