Patent US4150547A successfully refreshed from Google Patents.
US4150547A
Expired / Lapsed
US
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Regenerative heat storage in compressed air power system
Assignee: Individual
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Filing: 1977-09-14
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Granted: 1979-04-24
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Expires: 1997-09-14
Abstract
Abstract A compressed air power plant is disclosed wherein compressed air may be stored underground and later utilized as required. The storage facilities include a heat storage covern which contains an external water barrier and a heat insulating lining. Compressed air flows from the power plant in series through the heat storage cavern and then to an air storage cavern.
Inventors
- 👤 Michael J. Hobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:04
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/14; F02C6/16; F05; F05D; F05D2260/00; F05D2260/20; F05D2260/211; Y; Y02; Y02E; Y02E60/00; Y02E60/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
A compressed air power storage system comprising means for generating and utilizing compressed air, a compressed air storage cavern, a heat storage cavern containing a heat storage medium, a first air passage extending between the compressed air generating and utilizing means and the heat storage cavern, a second air passage extending between the heat storage cavern and the air storage cavern, and a housing for the heat storage medium within the heat storage cavern, said housing being spaced from the walls and roof of the cavern and having an external water barrier, a heat insulating lining within the barrier, and internal structure defining a serpentine path through the heat storage medium for passing air between the passages so as to ensure substantially uniform contact between the air and the medium.
Claim 2
Dependent Claim
130 words
A compressed air power storage system comprising means for generating and utilizing compressed air, a compressed air storage cavern, a heat storage cavern containing a heat storage medium, a first air passage extending between the compressed air generating and utilizing means and the heat storage cavern, a second air passage extending between the heat storage cavern and the air storage cavern, and a housing for the heat storage medium within the heat storage cavern, said housing being spaced from the walls and roof of the cavern and having an external water barrier, a heat insulating lining within the barrier, and internal structure defining a serpentine path through the heat storage medium for passing air between the passages so as to ensure substantially uniform contact between the air and the medium.
Claim 3
Dependent Claim
27 words
A compressed air power storage system according to claim 1, wherein a selectively operable aftercooler is connected between the compressed air generating means and the first passage.
Claim 4
Dependent Claim
46 words
A compressed air power storage system according to claim 1, wherein the space within the lining is divided in a plurality of passes by interdigitating walls so as to define said serpentine path, the heating storage medium being retained between the interdigitating portions of said walls.
Claim 5
Dependent Claim
34 words
A compressed air power storage system according to claim 3, wherein the heat storage cavern comprises drainage channels to capture water condensing in the heat store medium and shed from the external water barrier.
Claim 6
Dependent Claim
60 words
A compressed air power storage system according to claim 1, wherein the means for generating and utilizing the compressed air comprise low and high pressure compressors connected in series, and high and low pressure turbines, the low pressure compressor and turbine being connected to a first motor/generator and the high pressure compressor and turbine being connected to a second motor/generator.
References Cited (Backward Citations)
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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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |