USRE30630E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power plant secondary coolant circuit
Assignee: General Atomics Corp
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Filing: 1979-12-12
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Granted: 1981-06-02
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Expires: 1999-12-12
Abstract
Abstract In one embodiment, a closed cycle gas turbine system employs a precooler for cooling the gas prior to compression. A closed loop coolant circuit for the precooler includes a primary heat exchanger. A secondary heat exchanger is provided which may be employed during periods of peak demand on the turbine system to provide additional cooling for the coolant in the closed loop coolant circuit for the precooler. The secondary heat exchanger may also be employed to transfer heat in the reverse direction during periods of time in which the primary heat exchanger is operating at high effectiveness to provide storage of a fluid at low temperature to enhance operation in the initially described mode. In another embodiment, a similar coolant circuit operates in conjunction with a condenser for a steam power electrical generating facility.
Inventors
- 👤 David C. Morse
- 👤 Daniel L. Vrable
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:47
CPC Classifications
G; G21; G21D; G21D5/00; F; F02; F02C; F02C1/00; F02C1/04; F02C1/10; G21D5/04; G21D5/08; Y; Y02; Y02E; Y02E30/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
94 words
In a power plant having heat removal means in a working fluid circuit, a closed loop primary coolant circuit for circulating a coolant through said heat removal means, said primary coolant circuit including a primary heat exchanger for cooling the coolant therein, a secondary heat exchanger, and adjustable means for selectively directing at least a portion of a primary coolant in said primary coolant circuit through said secondary heat exchanger for further cooling the primary coolant and thereby increasing heat rejection capacity of said primary heat exchanger and said closed loop primary coolant circuit.
Claim 2
Dependent Claim
94 words
In a power plant having heat removal means in a working fluid circuit, a closed loop primary coolant circuit for circulating a coolant through said heat removal means, said primary coolant circuit including a primary heat exchanger for cooling the coolant therein, a secondary heat exchanger, and adjustable means for selectively directing at least a portion of a primary coolant in said primary coolant circuit through said secondary heat exchanger for further cooling the primary coolant and thereby increasing heat rejection capacity of said primary heat exchanger and said closed loop primary coolant circuit.
Claim 3
Dependent Claim
26 words
A power plant according to claim 1 and further comprising a closed loop secondary coolant circuit for circulating a secondary coolant through said secondary heat exchanger.
Claim 4
Dependent Claim
18 words
A power plant according to claim 2 and further comprising a refrigeration system for cooling said secondary coolant.
Claim 5
Dependent Claim
39 words
A power plant according to claim 2 and further comprising a delay reservoir in said secondary coolant circuit for storing a quantity of the secondary coolant sufficient to provide cooling of primary coolant for a substantial period of time.
Claim 6
Dependent Claim
95 words
A power plant according to claim 1 and further comprising a closed loop secondary coolant circuit for circulating a secondary coolant through said secondary heat exchanger, a delay reservoir in said secondary coolant circuit for storing a quantity of the secondary coolant sufficient to provide cooling of the primary coolant for a substantial period of time, said directing means including bypass means for selectively bypassing at least a portion of the primary coolant around said .[.precooler.]. .Iadd.heat removal means .Iaddend.and through said secondary heat exchanger for cooling the secondary coolant in said secondary coolant circuit.
Claim 7
Dependent Claim
18 words
A power plant according to claim 5 and further comprising a refrigeration system for cooling said secondary coolant.
Claim 8
Dependent Claim
47 words
A power plant according to claim 6 and further comprising a tertiary heat exchanger in said refrigeration system, said bypass means being coupled to said tertiary heat exchanger for transferring heat from said refrigeration system to the portion of the primary coolant circulated by said bypass means.
Claim 9
Dependent Claim
22 words
A power plant according to claim 1 wherein said working fluid is steam and wherein said heat removal means comprises a condenser.
Claim 10
Dependent Claim
129 words
A closed cycle gas turbine system comprising, turbine means, compressor means, means connected with said turbine means and said compressor means for circulating a gas for expansion in said turbine means and compression in said compressor means, a precooler for cooling the gas prior to compression in said compressor means, a closed loop primary coolant circuit for circulating a coolant through said precooler, said primary coolant circuit including a primary heat exchanger for cooling the coolant therein, a secondary heat exchanger, and adjustable means for selectively directing at least a portion of the primary coolant in said primary coolant circuit through said secondary heat exchanger for further cooling the primary coolant and thereby increasing heat rejection capacity of said primary heat exchanger in said closed loop primary coolant circuit.
Claim 11
Dependent Claim
129 words
A closed cycle gas turbine system comprising, turbine means, compressor means, means connected with said turbine means and said compressor means for circulating a gas for expansion in said turbine means and compression in said compressor means, a precooler for cooling the gas prior to compression in said compressor means, a closed loop primary coolant circuit for circulating a coolant through said precooler, said primary coolant circuit including a primary heat exchanger for cooling the coolant therein, a secondary heat exchanger, and adjustable means for selectively directing at least a portion of the primary coolant in said primary coolant circuit through said secondary heat exchanger for further cooling the primary coolant and thereby increasing heat rejection capacity of said primary heat exchanger in said closed loop primary coolant circuit.
Claim 12
Dependent Claim
27 words
A closed cycle gas turbine system according to claim 9 including a closed loop secondary coolant circuit for circulating a secondary coolant through said secondary heat exchanger.
Claim 13
Dependent Claim
19 words
A closed cycle gas turbine system according to claim 10 including a refrigeration system for cooling said secondary coolant.
Claim 14
Dependent Claim
40 words
A closed cycle gas turbine system according to claim 10 including a delay reservoir in said secondary coolant circuit for storing a quantity of the secondary coolant sufficient to provide cooling of primary coolant for a substantial period of time.
Claim 15
Dependent Claim
93 words
A closed cycle gas turbine system according to claim 9 including a closed loop secondary coolant circuit for circulating a secondary coolant through said secondary heat exchanger, a delay reservoir in said secondary coolant circuit for storing a quantity of the secondary coolant sufficient to provide cooling of the primary coolant for a substantial period of time, said directing means including bypass means for selectively bypassing at least a portion of the primary coolant around said precooler and through said secondary heat exchanger for cooling the secondary coolant in said secondary coolant circuit.
Claim 16
Dependent Claim
19 words
A closed cycle gas turbine system according to claim 13 including a refrigeration system for cooling said secondary coolant.
Claim 17
Dependent Claim
57 words
A closed cycle gas turbine system according to claim 13 including a refrigeration system for cooling said secondary coolant, and a tertiary heat exchanger in said refrigeration system, said bypass means being coupled to said tertiary heat exchanger for transferring heat from said refrigeration system to the portion of the primary coolant circulated by said bypass means.
Claim 18
Dependent Claim
226 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 precooler for cooling the gas prior to compression in said compressor means, a closed loop primary coolant circuit for circulating a coolant through said precooler, said coolant circuit including a primary heat exchanger for cooling the coolant therein, a secondary heat exchanger, a closed loop secondary coolant circuit for circulating a secondary coolant through said secondary heat exchanger, means for selectively directing at least a portion of the primary coolant in said primary coolant circuit through said secondary heat exchanger for further cooling the primary coolant, a delay reservoir in said secondary coolant circuit for storing a quantity of the secondary coolant sufficient to provide cooling of the primary coolant for a substantial period of time, a refrigeration system for cooling the secondary coolant, said refrigeration system including a tertiary heat exchanger, said directing means including bypass means for selectively bypassing at least a portion of the primary coolant around said precooler and through said secondary heat exchanger for cooling the secondary coolant in said secondary coolant circuit, said bypass means being coupled to said tertiary heat exchanger for removing heat from said refrigeration system to the portion of the secondary coolant circulated by said bypass means.
Claim 19
Dependent Claim
226 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 precooler for cooling the gas prior to compression in said compressor means, a closed loop primary coolant circuit for circulating a coolant through said precooler, said coolant circuit including a primary heat exchanger for cooling the coolant therein, a secondary heat exchanger, a closed loop secondary coolant circuit for circulating a secondary coolant through said secondary heat exchanger, means for selectively directing at least a portion of the primary coolant in said primary coolant circuit through said secondary heat exchanger for further cooling the primary coolant, a delay reservoir in said secondary coolant circuit for storing a quantity of the secondary coolant sufficient to provide cooling of the primary coolant for a substantial period of time, a refrigeration system for cooling the secondary coolant, said refrigeration system including a tertiary heat exchanger, said directing means including bypass means for selectively bypassing at least a portion of the primary coolant around said precooler and through said secondary heat exchanger for cooling the secondary coolant in said secondary coolant circuit, said bypass means being coupled to said tertiary heat exchanger for removing heat from said refrigeration system to the portion of the secondary coolant circulated by said bypass means.
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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) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |