Patent FR602926A successfully refreshed from Google Patents.
Patent US4540041A successfully refreshed from Google Patents.
US4540041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for tubular heat exchangers located in a lake
Assignee: Foerenade Fabriksverken AB
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Filing: 1983-04-22
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Granted: 1985-09-10
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Expires: 2003-04-22
Abstract
Abstract An arrangement of tubular exchangers located in a lake for anchorage of the heat exchanger to the bottom of the lake. A number of the colder portions of the inlet side of a circulating heat exchanger medium of the heat exchangers are connected to heat pipes frozen in the bottom of a lake. The heat pipes, sealed at both ends, as a result of heat transfer from the bottom of the lake become frozen in position and anchor the tubular heat exchangers to the lake bottom.
Inventors
- 👤 Lennart Backlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:55
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/0275; F24; F24V; F24V50/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
243 words
Heat exchange apparatus adapted to be anchored to the bottom of a lake, said heat exchange apparatus comprising a heat exchanger means adapted to circulate a heat exchanger medium for absorbing heat from a lake, a first end of a plurality of heat pipes are connected in a heat transfer relation with said heat exchanger means, said plurality of heat pipes being sealed at both ends and each forming a closed housing for a refrigerant, means for anchoring said heat exchanger means adapted to anchor said heat exchanger means to the bottom of the lake, said means for anchoring comprises a plate and a second end of said plurality of heat pipes adapted to be buried in the bottom of the lake in heat transfer contact with the bottom of the lake, and when said second end of said plurality of heat pipes is buried in heat transfer contact with the bottom of the lake, heat is transferred from the bottom of the lake to the refrigerant and from the refrigerant to the heat exchanger means connected in said heat transfer relation with said first end of said plurality of heat pipes, the second end of said plurality of heat pipes thereby becoming solidly frozen in place as a result of heat being transferred from the bottom of the lake and forming ice at the bottom of the lake, so that the heat exchanger means becomes anchored to the bottom of the lake.
Claim 2
Dependent Claim
243 words
Heat exchange apparatus adapted to be anchored to the bottom of a lake, said heat exchange apparatus comprising a heat exchanger means adapted to circulate a heat exchanger medium for absorbing heat from a lake, a first end of a plurality of heat pipes are connected in a heat transfer relation with said heat exchanger means, said plurality of heat pipes being sealed at both ends and each forming a closed housing for a refrigerant, means for anchoring said heat exchanger means adapted to anchor said heat exchanger means to the bottom of the lake, said means for anchoring comprises a plate and a second end of said plurality of heat pipes adapted to be buried in the bottom of the lake in heat transfer contact with the bottom of the lake, and when said second end of said plurality of heat pipes is buried in heat transfer contact with the bottom of the lake, heat is transferred from the bottom of the lake to the refrigerant and from the refrigerant to the heat exchanger means connected in said heat transfer relation with said first end of said plurality of heat pipes, the second end of said plurality of heat pipes thereby becoming solidly frozen in place as a result of heat being transferred from the bottom of the lake and forming ice at the bottom of the lake, so that the heat exchanger means becomes anchored to the bottom of the lake.
Claim 3
Dependent Claim
46 words
Heat exchange apparatus as in claim 1, characterized by a number of beams which hold down the heat exchanger means and which are located adjacent to the top side of the heat exchanger means and are connected by means of a wire with the moulded plate.
Claim 4
Independent Claim
161 words
An apparatus for anchoring a heat exchanger to the bottom of a lake, said heat exchanger transferring heat from the lake to the shore, said apparatus comprising: a plurality of heat pipes sealed at both ends, a refrigerant sealed within said plurality of heat pipes, means for securing one end of said plurality of pipes in a heat transfer relation with said heat exchanger, and means for anchoring said heat exchanger in heat transfer contact with the bottom of the lake, the other end of the said plurality of pipes terminating in said means for anchoring at a depth sufficient to assure substantial contact of said pipes and the bottom of the lake when said means for anchoring is positioned in the bottom of the lake, said means for anchoring becoming solidly frozen in place as a result of heat being transferred from the bottom of the lake, so that the heat exchanger becomes anchored to the bottom of the lake.
Claim 5
Independent Claim
161 words
An apparatus for anchoring a heat exchanger to the bottom of a lake, said heat exchanger transferring heat from the lake to the shore, said apparatus comprising: a plurality of heat pipes sealed at both ends, a refrigerant sealed within said plurality of heat pipes, means for securing one end of said plurality of pipes in a heat transfer relation with said heat exchanger, and means for anchoring said heat exchanger in heat transfer contact with the bottom of the lake, the other end of the said plurality of pipes terminating in said means for anchoring at a depth sufficient to assure substantial contact of said pipes and the bottom of the lake when said means for anchoring is positioned in the bottom of the lake, said means for anchoring becoming solidly frozen in place as a result of heat being transferred from the bottom of the lake, so that the heat exchanger becomes anchored to the bottom of the lake.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |