Passive-active thermosyphon

Refrigeration – Structural installation – Geographic – e.g. – subterranean feature

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62DIG22, 165 45, 16510421, F25D 2312

Patent

active

053277341

ABSTRACT:
A thermosyphon for use in frozen or unfrozen soil includes an evaporator tion embedded in the soil, a condenser section exposed to ambient air, an intermediate section connecting the two sections and a heat exchanger connected to a mechanical refrigeration source and operable to cool either the condenser or the intermediate section of the thermosyphon during periods when the ambient temperature is higher than that at which passive thermosyphonic cooling occurs.

REFERENCES:
patent: 3976125 (1976-08-01), Best
patent: 4524822 (1985-06-01), Hage et al.

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