Apparatus for containing toxic spills employing hybrid thermosyp

Details Apparatus for containing toxic spills employing hybrid thermosyp Apparatus for containing toxic spills employing hybrid thermosyp

1992-05-08

1994-08-23

Davis, Jr., Albert W.

Heat exchange

Geographical

62260, 62DIG22, 165912, 405130, E02D 1914

Patent

active

053398939

ABSTRACT:
The present invention is directed to a hybrid thermosyphon which may be rapidly deployed to create a frozen soil barrier for containing toxic spills. In a particular embodiment, a plurality of thermosyphons are deployed for freezing the soil around and under a defined area of soil; each thermosyphon contains a working fluid and includes an evaporator section for contact with the soil for removing heat therefrom by evaporation of the working fluid. A condenser section in flow communication with evaporator section and remote from the soil transfers heat from the working fluid to ambient by heat exchange and subsequent condensation of the working fluid when the ambient is lower than the temperature of the soil. An active refrigeration stage in heat exchange relation with at least a portion of the condenser section removes heat from the working fluid by heat exchange when the ambient is above the soil temperature. Sensors may be provided for sensing the ambient temperature for selectively operating the active refrigeration stage.

REFERENCES:
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patent: 3976125 (1976-08-01), Best
patent: 4793146 (1988-12-01), Ryokai
patent: 4961463 (1990-10-01), Denhartog et al.
patent: 4974425 (1990-12-01), Krieg et al.
Cold Regions Science and Technology, 15 (1988) pp. 251-259, F. Haynes et , "Thermosyphons & Foundation Design in Cold Regions".
The Seattle Times, Aug. 28, 1991, H. Williams, "Scientists Study a Deep Freeze for Leaking Wastes".
Cold Regions Science and Technology, 15 (1988) pp. 319-321, S. DenHartog, "A Thermosyphon for Horizontal Applications".

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