Heat exchange – Intermediate fluent heat exchange material receiving and... – Liquid fluent heat exchange material
Patent
1992-04-03
1993-03-02
Davis, Jr., Albert W.
Heat exchange
Intermediate fluent heat exchange material receiving and...
Liquid fluent heat exchange material
165 45, 165 46, 16510429, F28D 1502
Patent
active
051900980
ABSTRACT:
A thermosyphon for removing heat from a permafrost foundation is composed of a sealed container containing an easily vaporizable liquid. The container has a condenser part, which is exposed to temperatures below the condensation temperature of the liquid, and an evaporator part in which the liquid is intended to boil. The evaporator part is of double-tube structure with a supply tube and a return tube connected to each other at a point distal from the condenser part. The return tube has a riser with an opening at one end which is inside the supply tube and has a much smaller cross-sectional area than the supply tube around it. The tubes may have both rising and falling sections but the opening of the riser is sufficiently higher than these sections of the tubes such that the hydrostatic pressure causes the liquid in the evaporator part to flow from the supply tube into the return tube as the liquid forms bubbles in the evaporator part and overflows from the riser opening.
REFERENCES:
patent: 3217791 (1965-11-01), Long
patent: 3817321 (1974-06-01), von Cube et al.
patent: 4961463 (1990-10-01), DenHartog et al.
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