Apparatus for condensing liquid cryogen boil-off

Refrigeration – Refrigeration producer – Evaporator – e.g. – heat exchanger

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62 6, F25B 1900

Patent

active

044844581

ABSTRACT:
An apparatus for condensing cryogen (e.g., helium) boil-off in a confined space such as the neck tube of a helium cryostat comprising a Joule-Thompson heat exchanger and valve disposed around a displacer-expander cryogenic refrigerator so the thermal gradient in the heat exchanger matches that of the refrigerator.

REFERENCES:
patent: 3148512 (1964-09-01), Hoffman et al.
patent: 3299646 (1967-01-01), Stuart et al.
patent: 3620029 (1971-11-01), Longsworth
patent: 3942010 (1976-03-01), Peterson et al.
patent: 4223540 (1980-09-01), Longsworth
patent: 4279127 (1981-07-01), Longsworth

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