Hydraulic and earth engineering – Temperature modification or control of earthen formation
Patent
1995-08-22
1997-04-08
Graysay, Tamara L.
Hydraulic and earth engineering
Temperature modification or control of earthen formation
62260, 165 45, 405229, E02D 1914, F25D 2312
Patent
active
056181345
ABSTRACT:
A self-refrigeration keel-type foundation system for supporting a structure, such as a building floor slab, hot or cold pipelines, bridging foundation and the like, above a permafrost earth strata located below the ground includes at least one and preferably a pair of elongated hollow containers underlying the structure, a load bearing assembly mounted on the upper sides of the containers for supporting the structure in a spaced relation above the containers, and a passive arrangement for transferring heat to the atmosphere above the ground via a heat exchanger unit located above the ground in substantial contact with the atmosphere, from the region of the permafrost earth strata adjacent to and supporting the containers via a natural thermal-siphon flow of refrigerant fluid in a refrigerant flow circuit extending through the containers and heat exchange unit and extending therebetween to thereby maintain the permafrost earth strata in a frozen condition.
REFERENCES:
patent: 3220470 (1965-11-01), Balch
patent: 3472314 (1969-10-01), Balch
patent: 3791443 (1974-02-01), Burt et al .
patent: 4344414 (1982-08-01), Balch
patent: 4632604 (1986-12-01), McKelvy
Flanagan John R.
Graysay Tamara L.
Mayo Tara L.
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