Patent US3841100A successfully refreshed from Google Patents.
US3841100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed cycle gas turbine system
Assignee: General Atomics Corp
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Filing: 1972-10-05
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Granted: 1974-10-15
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Expires: 1992-10-05
Abstract
Abstract A closed cycle gas turbine system is described employing a heat exchanger for cooling the working gas after expansion in the turbine. A coolant circuit includes a delay reservoir having a capacity equal to the amount of coolant required by the heat exchanger over a substantial period of time, so that coolant flowing into the reservoir is not returned immediately to the heat exchanger.
Inventors
- 👤 P Fortescue
- 👤 C Rickard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:54
CPC Classifications
F; F02; F02C; F02C1/00; F02C1/04; Y; Y10; Y10S; Y10S165/00; Y10S165/90
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
A closed cycle gas turbine system comprising, turbine means, compressor means, means for circulating a gas for expansion in said turbine means and compression in said compressor means, a heat exchanger for cooling the gas after expansion in said turbine means, and a coolant circuit for circulating a coolant through said heat exchanger, said coolant circuit including a delay reservoir having a capacity equal to the amount of coolant required by said heat exchanger over a substantial period of time, said coolant circuit further including means for circulating coolant from said heat exchanger into said reservoir and from said reservoir to said heat exchanger.
Claim 2
Dependent Claim
104 words
A closed cycle gas turbine system comprising, turbine means, compressor means, means for circulating a gas for expansion in said turbine means and compression in said compressor means, a heat exchanger for cooling the gas after expansion in said turbine means, and a coolant circuit for circulating a coolant through said heat exchanger, said coolant circuit including a delay reservoir having a capacity equal to the amount of coolant required by said heat exchanger over a substantial period of time, said coolant circuit further including means for circulating coolant from said heat exchanger into said reservoir and from said reservoir to said heat exchanger.
Claim 3
Dependent Claim
23 words
A system according to claim 1 wherein the capacity of said delay reservoir is sufficient to provide a delay of about 12 hours.
Claim 4
Dependent Claim
21 words
A system according to claim 1 wherein said coolant circuit includes means for cooling the coolant after leaving said heat exchanger.
Claim 5
Dependent Claim
15 words
A system according to claim 3 wherein said cooling means comprises a dry cooling tower.
Claim 6
Dependent Claim
14 words
A system according to claim 3 wherein said cooling means comprise a dry condensor.
Claim 7
Dependent Claim
27 words
A system according to claim 1 wherein said coolant circuit includes a pump, and a turbine for driving said pump, said turbine being operable by said coolant.
Claim 8
Dependent Claim
23 words
A system according to claim 1 wherein said delay reservoir includes internal baffles arranged to inhibit thermal mixing of entry and exit flow.
Claim 9
Dependent Claim
27 words
A system according to claim 1 wherein said delay reservoir includes means for stirring the contents of said delay reservoir to maintain a relatively constant temperature throughout.
Claim 10
Dependent Claim
19 words
A system according to claim 1 including a moisture impermeable film covering the surface of coolant in said reservoir.
Claim 11
Dependent Claim
19 words
A system according to claim 1 including a movable opaque roof for selectively exposing said reservoir to ambient conditions.
Claim 12
Dependent Claim
110 words
A closed cycle gas turbine system comprising turbine means, compressor means, means for circulating a gas for expansion in said turbine means and compression in said compressor means, a heat exchanger for cooling the gas after expansion in said turbine means, and a coolant circuit for circulating a coolant through said heat exchanger, said coolant circuit including a storage tank having a capacity sufficient to store an amount of coolant equal to about 12 hours flow through said heat exchanger, means for cooling the coolant after leaving said heat exchanger and before entering said storage tank, and a pump for returning coolant from said storage tank to said heat exchanger.
Claim 13
Dependent Claim
110 words
A closed cycle gas turbine system comprising turbine means, compressor means, means for circulating a gas for expansion in said turbine means and compression in said compressor means, a heat exchanger for cooling the gas after expansion in said turbine means, and a coolant circuit for circulating a coolant through said heat exchanger, said coolant circuit including a storage tank having a capacity sufficient to store an amount of coolant equal to about 12 hours flow through said heat exchanger, means for cooling the coolant after leaving said heat exchanger and before entering said storage tank, and a pump for returning coolant from said storage tank to said heat exchanger.
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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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |