US4293030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for passively cooling a shelter containing a heat source
Assignee: Ormat Industries Ltd
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Filing: 1978-12-13
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Granted: 1981-10-06
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Expires: 1998-12-13
Abstract
Abstract The passive cooling of a shelter containing a heat source is achieved by utilizing a thermal liquid in an accumulator, a first heat transfer loop for thermosiphonically transferring heat from the interior of the shelter to the liquid in the accumulator when the liquid is cooler than the interior of the shelter, and a second heat transfer loop for thermosiphonically transferring heat from the liquid in the accumulator to the environment when the latter is cooler than the liquid in the accumulator.
Inventors
- 👤 Claude Rambach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:53
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20536; H05K7/20627; H05K7/20654; F; F25; F25B; F25B23/00; F25D; F25D1/00; F25D17/00; F25D17/02; F25D3/00; F25D3/005; F28; F28D; F28D15/00; F28D15/02; F28D15/0266; F28D20/00; F28D20/0034; H05K7/20218; H05K7/20245; Y; Y02; Y02E; Y02E60/00; Y02E60/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
Apparatus for passively cooling the interior of a shelter containing a heat source and located in a diurnal environment which is periodically hotter and cooler than the interior of the shelter comprising: (a) an accumulator containing a thermal liquid; (b) a first heat transfer loop, including thermosyphonic means, for transferring heat by transferring the liquid from the interior of the shelter to the liquid in the accumulator when the liquid is cooler than the interior of the shelter; and (c) a second heat transfer loop, including thermosyphonic means, for transferring heat by transferring the liquid from the liquid in the accumulator to the environment when the latter is cooler than the thermal liquid in the accumulator.
Claim 2
Dependent Claim
116 words
Apparatus for passively cooling the interior of a shelter containing a heat source and located in a diurnal environment which is periodically hotter and cooler than the interior of the shelter comprising: (a) an accumulator containing a thermal liquid; (b) a first heat transfer loop, including thermosyphonic means, for transferring heat by transferring the liquid from the interior of the shelter to the liquid in the accumulator when the liquid is cooler than the interior of the shelter; and (c) a second heat transfer loop, including thermosyphonic means, for transferring heat by transferring the liquid from the liquid in the accumulator to the environment when the latter is cooler than the thermal liquid in the accumulator.
Claim 3
Dependent Claim
250 words
Apparatus for passively cooling the interior of a shelter containing a heat source and located in a diurnal environment which is periodically hotter and cooler than the interior of the shelter comprising: (a) an accumulator containing a thermal liquid; (b) a first heat transfer loop for transferring heat from the interior of the shelter to the liquid in the accumulator when the liquid is cooler than the interior of the shelter; (c) the first heat transfer loop including first and second upstanding pipes whose upper ends are connected to the accumulator, the lower end of the first pipe being at a lower elevation than the lower end of the second pipe; (d) a heat transfer conduit exposed to the interior of the shelter and interconnecting the lower ends of the pipes; (e) thermosyphonic means for establishing a thermosyphonic liquid transport driving force in the first heat transfer loop; (f) a second heat transfer loop for transferring heat from the liquid in the accumulator to the environment when the latter is cooler than the thermal liquid in the accumulator; (g) the second heat transfer loop including first and second upstanding pipes whose lower ends are connected to the accumulator, the upper end of the first pipe being at a higher elevation than the upper end of the second pipe; (h) a heat transfer conduit exposed to the environment and interconnecting the upper ends of the pipes; and (i) thermosyphonic means for establishing thermosyphonical liquid transport driving forces in the second loop.
Claim 4
Dependent Claim
250 words
Apparatus for passively cooling the interior of a shelter containing a heat source and located in a diurnal environment which is periodically hotter and cooler than the interior of the shelter comprising: (a) an accumulator containing a thermal liquid; (b) a first heat transfer loop for transferring heat from the interior of the shelter to the liquid in the accumulator when the liquid is cooler than the interior of the shelter; (c) the first heat transfer loop including first and second upstanding pipes whose upper ends are connected to the accumulator, the lower end of the first pipe being at a lower elevation than the lower end of the second pipe; (d) a heat transfer conduit exposed to the interior of the shelter and interconnecting the lower ends of the pipes; (e) thermosyphonic means for establishing a thermosyphonic liquid transport driving force in the first heat transfer loop; (f) a second heat transfer loop for transferring heat from the liquid in the accumulator to the environment when the latter is cooler than the thermal liquid in the accumulator; (g) the second heat transfer loop including first and second upstanding pipes whose lower ends are connected to the accumulator, the upper end of the first pipe being at a higher elevation than the upper end of the second pipe; (h) a heat transfer conduit exposed to the environment and interconnecting the upper ends of the pipes; and (i) thermosyphonic means for establishing thermosyphonical liquid transport driving forces in the second loop.
Claim 5
Dependent Claim
15 words
Apparatus according to claim 2 wherein the thermosiphonic means includes insulation on the first pipe.
Claim 6
Dependent Claim
35 words
Apparatus according to claim 3 wherein the thermosiphonic means also includes positioning of the upper end of the second pipe at a higher elevation in the accumulator than the upper end of the first pipe.
Claim 7
Dependent Claim
19 words
Apparatus according to claim 4 wherein the shelter is insulated and the heat source is electrical means housed therein.
Claim 8
Dependent Claim
17 words
Apparatus according to claim 5 including an auxiliary thermosiphonic loop in the shelter connected to the accumulator.
Claim 9
Dependent Claim
11 words
Apparatus according to claim 5 where the thermal liquid includes water.
Claim 10
Dependent Claim
20 words
Apparatus according to claim 7 including an expansion tank connected to the second heat transfer loop at its highest elevation.
References Cited (Backward Citations)
US854278A
Cited
US854277A
Cited
US1396996A
Cited
US1853490A
Cited
FR691648A
Cited
GB451706A
Cited
US2342211A
Cited
FR887267A
Cited
US2499736A
Cited
DE800753C
Cited
FR1393510A
Cited
AU414159B2
Cited
US3472314A
Cited
US3648767A
Cited
FR2154864A5
Cited
FR2200488B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |