Spray cooling for infrared telescope

Details Spray cooling for infrared telescope Spray cooling for infrared telescope

1975-05-20

1976-07-20

Borchelt, Archie R.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

62467R, 250338, G01J 302, F17C 700

Patent

active

039708519

ABSTRACT:
A detector of an infrared telescope that must be cooled to near 20.degree4.degree. K in order to function properly is cooled by spraying a liquid cryogenic fluid through a small nozzle into a vented chamber of subatmospheric pressure to cause the pressure of the cryogenic fluid to be dropped below its fluid triple point pressure and thereby freeze to deposit frozen crystals on the detector and thereby cool the detector to the required temperature for proper functioning of the detector. The frozen crystals deposited on the detector will be sublimed therefrom by the heat leaked and generated in the detector.

REFERENCES:
patent: 3018643 (1962-01-01), Evers
patent: 3025680 (1962-03-01), DeBrosse et al.

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