US5177952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed cycle power system
Assignee: Boeing Co
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Filing: 1991-03-01
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Granted: 1993-01-12
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Expires: 2011-03-01
Abstract
Abstract A closed cycle power system adaptable for use in terrestrial and extraterrestrial applications. A combustor is provided for combusting a fuel and an oxidizer at stoichiometric conditions. The resulting combustion efflux is combined with a third product to form a working fluid. The third product has the same atomic and molecular constituents as the fuel and oxidizer. An engine is provided for receiving the working fluid and driving power output therefrom. The exhaust from the engine is cooled and a controlled portion therefrom is extracted and condensed. The controlled portion is separated into its original atomic constituents for storage under high pressure and ultimate reuse as said fuel and oxidizer. The remaining portion of the exhaust is recompressed and reheated. That remaining portion becomes said third product which becomes combined with the comsution efflux to form a working fluid. The resulting stoichiometric closed loop process provides an efficient source of power.
Inventors
- 👤 Charles L. Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:19
CPC Classifications
F; F01; F01K; F01K25/00; F01K25/005; F02; F02G; F02G2250/00; F02G2250/03
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
139 words
A closed cycle power system, comprising: a) means for combusting a fuel and an oxidizer at stoichiometric conditions; b) means for combining the resulting combustion efflux with a third product to form a working fluid, said third product having the same atomic constitutents as said fuel and said oxidizer; c) an engine for receiving said working fluid and providing power output therefrom; d) means for cooling an exhaust from said engine and extracting and condensing a controlled portion of said exhaust; e) separating means for separating said controlled portion into its original atomic constitutents for storage under high pressure and ultimate reuse as said fuel and oxidizer; and, f) means for recompressing and reheating the remaining portion of said exhaust, said remaining portion being said third product, the resulting stoichiometric closed loop process providing an efficient source of power.
Claim 2
Dependent Claim
139 words
A closed cycle power system, comprising: a) means for combusting a fuel and an oxidizer at stoichiometric conditions; b) means for combining the resulting combustion efflux with a third product to form a working fluid, said third product having the same atomic constitutents as said fuel and said oxidizer; c) an engine for receiving said working fluid and providing power output therefrom; d) means for cooling an exhaust from said engine and extracting and condensing a controlled portion of said exhaust; e) separating means for separating said controlled portion into its original atomic constitutents for storage under high pressure and ultimate reuse as said fuel and oxidizer; and, f) means for recompressing and reheating the remaining portion of said exhaust, said remaining portion being said third product, the resulting stoichiometric closed loop process providing an efficient source of power.
Claim 3
Dependent Claim
50 words
The closed cycle power system of Claim 1, wherein: said means for combusting a fuel and an oxidizer includes means for combusting H 2 and O 2 , and said means for combining the resulting combustion efflux with a third product includes combining said combustion efflux with H 2 O.
Claim 4
Dependent Claim
36 words
The closed cycle power system of Claim 2, wherein: said separating means for separating said controlled portion into its original atomic and molecular constituents includes means for converting water to H 2 and O 2 .
Claim 5
Dependent Claim
25 words
The closed cycle power system of claim 3, wherein: said means for converting water to H 2 and O 2 includes solid polymer electrolysis means.
Claim 6
Dependent Claim
25 words
The closed cycle power system of Claim 4, further including: microwave transmission means for providing electrical dc power input for said solid polymer electrolysis means.
Claim 7
Dependent Claim
14 words
The closed cycle power system of Claim 2, wherein: said engine includes a turbo-compressor.
Claim 8
Dependent Claim
61 words
The closed cycle power system of Claim 6, wherein said means for recompressing and reheating the remaining portion of said exhaust includes: a compressor of said turbo-compressor for receiving said remaining portion, and heat exchanger means for receiving the fluid output of said compressor and raising its pressure and its temperature to an acceptable value for use as said third product.
Claim 9
Dependent Claim
25 words
The closed cycle power system of Claim 7, wherein said heat exchanger means includes a heat exchanger for receiving the fluid output of said compressor.
Claim 10
Dependent Claim
128 words
A combustion process, comprising: a) combusting a fuel and an oxidizer at stoichiometric conditions; b) combining the resulting combustion efflux with a third product to form a working fluid, said third product having the same atomic constituents as said fuel and said oxidizer; c) introducing said working fluid into an engine, said engine for providing power output; d) cooling the exhaust from said engine and extracting and condensing a controlled portion of said exhaust; e) separating said controlled portion into its original atomic constituents for storage and under high pressure and ultimate reuse as said fuel and oxidizer; and, f) recompressing and reheating the remaining portion of said exhaust, said remaining portion being said third product, the resulting stoichiometric closed loop process providing an efficient source of power.
Claim 11
Dependent Claim
128 words
A combustion process, comprising: a) combusting a fuel and an oxidizer at stoichiometric conditions; b) combining the resulting combustion efflux with a third product to form a working fluid, said third product having the same atomic constituents as said fuel and said oxidizer; c) introducing said working fluid into an engine, said engine for providing power output; d) cooling the exhaust from said engine and extracting and condensing a controlled portion of said exhaust; e) separating said controlled portion into its original atomic constituents for storage and under high pressure and ultimate reuse as said fuel and oxidizer; and, f) recompressing and reheating the remaining portion of said exhaust, said remaining portion being said third product, the resulting stoichiometric closed loop process providing an efficient source of power.
Claim 12
Dependent Claim
45 words
The combustion process of claim 9, wherein: said step combus ting a fuel and an oxidizer includes combusting H 2 and O 2 and, said step of combining the resulting combustion efflux with a third product includes combining said combustion efflux with H 2 O.
Claim 13
Dependent Claim
24 words
The combustion process of claim 10, wherein: said step of separating said controlled portion includes converting water to H 2 and O 2 .
Claim 14
Dependent Claim
15 words
The combustion process of claim 11, wherein said conversion includes a solid polymer electrolysis process.
Claim 15
Dependent Claim
26 words
The combustion process of claim 12, further including the step of providing electrical dc power input for said solid polymer electrolysis process by microwave transmission thereto.
Claim 16
Dependent Claim
29 words
The combustion process of claim 10, wherein said step of introducing the resulting combustion efflux into an engine includes the step of introducing said combustion efflux into a turbo-compressor.
Claim 17
Dependent Claim
62 words
The combustion process of claim 14, wherein said step of recompressing and reheating the remaining portion of said exhaust includes the steps of: introducing said remaining portion to a compressor of said turbo-compressor; and, directing the fluid output of said compressor to heat exchanger means for raising its pressure and its temperature to an acceptable value for use as said third product.
Claim 18
Dependent Claim
29 words
The combustion process of claim 15, wherein said step of directing the fluid output of said compressor to heat exchanges means includes the introduction thereof to a 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) | 1996-01-12 | 1996-07-13 | 1997-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-12 | 2000-07-13 | 2001-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-12 | 2004-07-13 | 2005-01-12 | $7700.00 | Window Closed / Lapsed |