Bimaterial demand-flow cryostat

Details Bimaterial demand-flow cryostat Bimaterial demand-flow cryostat

F - Mech Eng,Light,Heat,Weapons

25

B

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F25B 41/04 (2006.01) F25B 9/02 (2006.01) F25J 1/00 (2006.01) G05D 23/02 (2006.01)

Patent

CA 1094834

213-P-US02166 BIMATERIAL DEMAND FLOW CRYOSTAT ABSTRACT A demand-flow cryostat wherein a refrigerant is supplied through an elongated heat exchanger disposed in a container and the refrigerant is expanded through a Joule-Thompson expansion orifice at one end of the heat exchanger to provide an inventory of liquid in the container at that end and wherein a valve member for controlling a refrigerant flow through the orifice is located adjacent thereto and is movable relative to the orifice; whereby a throttling movement is effected with a reduction in temperature, The operation of the orifice and valve member characterized in that each is affixed to separate mounting means, each of which mounting means is associated with a separate control element composed of different materials whose mean cryogenic linear coefficients of expansion differ by at least about 1 x 10-5 (°K-1).

323566

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