US3877218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brayton cycle system with refrigerated intake and condensed water injection
Assignee: Individual
•
Filing: 1974-01-02
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Granted: 1975-04-15
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Expires: 1994-01-02
Abstract
Abstract In an open Brayton cycle including a compressor, combustion chamber, and an expander, the suction air for the compressor is refrigerated to a temperature at which water vapor in the air condenses. This water is introduced into the compressed air from the Brayton cycle air compressor, vaporized in a recuperator by heat exchange with Brayton cycle expander exhaust before introducing the compressed air into the Brayton cycle combustion chamber. The condensation of the water is in the presence of an aqueous solution of a freezing point depressant or vapor pressure depressant so that the condensed water remains in liquid form.
Inventors
- 👤 William H Nebgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:48
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/14; F02C7/141; F02C7/143; F25; F25B; F25B11/00; F25B11/02; F02G; F02G2250/00; F02G2250/03; F25B2400/00; F25B2400/14; F25B2400/141
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
In a simple open cycle Brayton system including an air compressor, a combustion chamber and an expander, the improvement which includes, in combination, refrigerating the suction air to the compressor to a temperature at which water vapor in the air condenses, vaporizing the condensed water by introducing it into a portion of the Brayton cycle system between air compressor and combustion chamber, whereby efficiency of the system is increased and excess of air to the combustion chamber is reduced.
Claim 2
Dependent Claim
79 words
In a simple open cycle Brayton system including an air compressor, a combustion chamber and an expander, the improvement which includes, in combination, refrigerating the suction air to the compressor to a temperature at which water vapor in the air condenses, vaporizing the condensed water by introducing it into a portion of the Brayton cycle system between air compressor and combustion chamber, whereby efficiency of the system is increased and excess of air to the combustion chamber is reduced.
Claim 3
Dependent Claim
25 words
A Brayton cycle according to claim 1 in which the water is condensed in the presence of an aqueous solution of a freezing point depressant.
Claim 4
Dependent Claim
23 words
A Brayton cycle system according to claim 1 in which the water is condensed in the presence of a water vapor pressure depressant.
Claim 5
Dependent Claim
32 words
A Brayton cycle system according to claim 2 in which the composition of the aqueous solution is controlled to avoid the freezing of the solution at the temperature of the refrigerated air.
Claim 6
Dependent Claim
39 words
A Brayton cycle system according to claim 2 in which the aqueous solution absorbs water from the air being refrigerated while flowing in a film over a heat conducting wall which separates the solution from the refrigerant or coolant.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |