US4873840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy co-generation system
Assignee: SWEDSTEAM AB
•
Filing: 1988-02-11
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Granted: 1989-10-17
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Expires: 2008-02-11
Abstract
Abstract A co-generation system for producing electricity, heating and cooling and including a combustion unit, a boiler connected to the combustion unit, a steam engine and an electrical generator driven to the steam engine. A condenser is connected to the steam exhaust port of the steam engine, the condenser supplying heat to a heat system and causing condensation of the steam discharged by the exhaust port. An absorption cooler is connected to the exhaust port of the steam engine, the absorption cooler for cooling fluid of a cooling system. A heat pump or centrifugal cooler can also be driven by the output shaft of the steam engine. The co-generation system can also include a flue gas cooler for further transfer of heat to heating system.
Inventors
- 👤 Rolf Gilliusson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
F; F01; F01K; F01K17/00; F01K17/02; Y; Y02; Y02E; Y02E20/00; Y02E20/14
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
181 words
A co-generation system for producing electricity, heating and cooling, the co-generation system comprising: a combustion unit; a boiler operably connected to the combustion unit and adapted to produce steam; steam engine including at least one cylinder having a steam inlet port and a steam exhaust port, an output shaft, and a reciprocating piston housed in the cylinder and connected to the output shaft for rotatably driving the output shaft; means for supplying steam from the boiler to the steam inlet port of the steam engine; an electrical generator selectively operably connected to the output shaft of the steam engine so as to be selectively driven by the steam engine for the production of electricity; condenser means selectively operably connected to the exhaust port of the steam engine, the condenser means including means for supplying heat to a heat system and means for causing condensation of the steam discharged by the exhaust port; and an absorption cooler means selectively operably connected to the exhaust port of the steam engine, the absorption cooler means including means for cooling fluid of a cooling system.
Claim 2
Dependent Claim
181 words
A co-generation system for producing electricity, heating and cooling, the co-generation system comprising: a combustion unit; a boiler operably connected to the combustion unit and adapted to produce steam; steam engine including at least one cylinder having a steam inlet port and a steam exhaust port, an output shaft, and a reciprocating piston housed in the cylinder and connected to the output shaft for rotatably driving the output shaft; means for supplying steam from the boiler to the steam inlet port of the steam engine; an electrical generator selectively operably connected to the output shaft of the steam engine so as to be selectively driven by the steam engine for the production of electricity; condenser means selectively operably connected to the exhaust port of the steam engine, the condenser means including means for supplying heat to a heat system and means for causing condensation of the steam discharged by the exhaust port; and an absorption cooler means selectively operably connected to the exhaust port of the steam engine, the absorption cooler means including means for cooling fluid of a cooling system.
Claim 3
Dependent Claim
57 words
A co-generation system as set forth in claim 1 and further including valve means between the exhaust port of the steam engine and the condenser means and the absorption cooler means, the valve means including means for selectively controlling flow of exhaust steam from the steam exhaust port to the condenser means and the absorption cooler means.
Claim 4
Dependent Claim
27 words
A co-generation system as set forth in claim 1 and further including shunt means providing for heat transfer between said condenser means and said absorption cooler means.
Claim 5
Dependent Claim
71 words
A co-generation system as set forth in claim 1 wherein said steam engine includes at least two exhaust steam ports, wherein said condenser means is selectively operably connected to one of said exhaust steam ports whereby steam is selectively provided to said condenser means and wherein said absorption cooler means is operably connected to the other of said exhaust steam ports whereby steam is selectively provided to said absorption cooler means.
Claim 6
Dependent Claim
171 words
A co-generation system for producing electricity, heating and cooling, the co-generation system comprising: a combustion unit; a boiler operably connected to the combustion unit and adapted to produce steam; steam engine including at least one cylinder having a steam inlet port and a steam exhaust port, an output shaft, and a reciprocating piston housed in the cylinder and connected to the output shaft for rotatably driving the output shaft; means for supplying steam from the boiler to the steam inlet port of the steam engine; an electrical generator selectively operably connected to the output shaft of the steam engine so as to be selectively driven by the steam engine for the production of electricity; condenser means operably connected to the exhaust port of the steam engine, the condenser means including means for supplying heat to a heat system and means for causing condensation of the steam discharged by the exhaust port; and heat pump means selectively operably connected to the steam engine so as to be driven by the steam engine.
Claim 7
Dependent Claim
171 words
A co-generation system for producing electricity, heating and cooling, the co-generation system comprising: a combustion unit; a boiler operably connected to the combustion unit and adapted to produce steam; steam engine including at least one cylinder having a steam inlet port and a steam exhaust port, an output shaft, and a reciprocating piston housed in the cylinder and connected to the output shaft for rotatably driving the output shaft; means for supplying steam from the boiler to the steam inlet port of the steam engine; an electrical generator selectively operably connected to the output shaft of the steam engine so as to be selectively driven by the steam engine for the production of electricity; condenser means operably connected to the exhaust port of the steam engine, the condenser means including means for supplying heat to a heat system and means for causing condensation of the steam discharged by the exhaust port; and heat pump means selectively operably connected to the steam engine so as to be driven by the steam engine.
Claim 8
Dependent Claim
32 words
A co-generation system as set forth in claim 5 wherein said heat pump means includes means for drawing heat from a source of water and for supplying heat to the heat system.
Claim 9
Dependent Claim
70 words
A co-generation system as set forth in claim 6 wherein said steam engine includes a rotationally driven output shaft having opposite ends, one of the opposite ends of the output shaft being selectively coupled to the electrical generator for selectively driving the electrical generator and the other of the opposite ends of the output shaft being selectively coupled to the heat pump means for selectively driving the heat pump means.
Claim 10
Dependent Claim
40 words
A co-generation system as set forth in claim 5 and further including an absorption cooler means selectively operably connected to the exhaust port of the steam engine, the absorption cooler means including means for cooling fluid of a cooling system.
Claim 11
Dependent Claim
56 words
A co-generation system as set forth in claim 8 and further including valve means between the exhaust port of the steam engine and the condenser means and the absorption cooler means, the valve means including means for selectively controlling flow of exhaust steam from the exhaust port to the condenser means and the absorption cooler means.
Claim 12
Dependent Claim
26 words
A co-generation system as set forth in claim 8 and further including shunt means Providing for heat transfer between said condenser and said absorption cooler means.
Claim 13
Dependent Claim
69 words
A co-generation system as set forth in claim 8 wherein said steam engine includes at least two exhaust steam ports, wherein said condenser means is selectively operably connected to one of said exhaust ports whereby steam is selectively provided to said condenser means and wherein said absorption cooler means is operably connected to the other of said exhaust ports whereby steam is selectively provided to said absorption cooler means.
Claim 14
Dependent Claim
174 words
A co-generation system for producing electricity, heating and cooling, the co-generation system comprising; a combustion unit; a boiler operably connected to the combustion unit and adapted to produce steam; steam engine including at least one cylinder having a steam inlet port and a steam exhaust port, an output shaft, and a reciprocating piston housed in the cylinder and connected to the output shaft for rotatably driving the output shaft; means for supplying steam from the boiler to the steam inlet port of the steam engine; an electrical generator selectively operably connected to the output shaft of the steam engine so as to be selectively driven by the steam engine for the production of electricity; condenser means operably connected to the exhaust port of the steam engine, the condenser means including means for supplying heat to a heat system and means for causing condensation of the steam discharged by the exhaust port; and a centrifugal cooler means selectively operably connected to the steam engine so as to be selectively operably driven by the steam engine.
Claim 15
Dependent Claim
174 words
A co-generation system for producing electricity, heating and cooling, the co-generation system comprising; a combustion unit; a boiler operably connected to the combustion unit and adapted to produce steam; steam engine including at least one cylinder having a steam inlet port and a steam exhaust port, an output shaft, and a reciprocating piston housed in the cylinder and connected to the output shaft for rotatably driving the output shaft; means for supplying steam from the boiler to the steam inlet port of the steam engine; an electrical generator selectively operably connected to the output shaft of the steam engine so as to be selectively driven by the steam engine for the production of electricity; condenser means operably connected to the exhaust port of the steam engine, the condenser means including means for supplying heat to a heat system and means for causing condensation of the steam discharged by the exhaust port; and a centrifugal cooler means selectively operably connected to the steam engine so as to be selectively operably driven by the steam engine.
Claim 16
Dependent Claim
70 words
A co-generation system as set forth in claim 12 wherein said steam engine includes a rotationally driven output shaft having opposite ends, one of the opposite ends of the output shaft being selectively coupled to the electrical generator for selectively driving the electrical generator and the other of the opposite ends of the output shaft being selectively coupled to the centrifugal cooler means for selectively driving the centrifugal cooler means.
Claim 17
Dependent Claim
40 words
A co-generation system as set forth in claim 12 and further including an absorption cooler means selectively operably connected to the exhaust port of the steam engine, the absorption cooler means including means for cooling fluid of a cooling system.
Claim 18
Dependent Claim
30 words
A co-generation system as set forth in claim 14 wherein the centrifugal cooler is operably connected to the cooling system and includes means for cooling fluid of the cooling system.
Claim 19
Dependent Claim
25 words
A co-generation system as set forth in claim 15 wherein the centrifugal cooler and the absorption cooler means are operably connected to the cooling system.
Claim 20
Dependent Claim
52 words
A co-generation system as set forth in claim 14 and further including valve means between the exhaust port of the steam engine and the condenser means and the absorption cooler means, the valve means including means for selectively controlling flow of exhaust steam to the condenser means and the absorption cooler means.
Claim 21
Dependent Claim
27 words
A co-generation system as set forth in claim 14 and further including shunt means providing for heat transfer between said condenser means and said absorption cooler means.
Claim 22
Dependent Claim
67 words
A co-generation system as set forth in claim 14 wherein said steam engine includes at least two exhaust steam ports, wherein said condenser means is selectively operably connected to one of said exhaust ports whereby steam is selectively provided to said condenser and wherein said absorption cooler means is operably connected to the other of said exhaust ports whereby steam is selectively provided to said absorption cooler.
References Cited (Backward Citations)
US1938366A
Cited
US2667766A
Cited
US3008297A
Cited
US3488961A
Cited
US3937023A
Cited
US4093868A
Cited
US4006857A
Cited
US4170879A
Cited
US4143515A
Cited
US4295606A
Cited
US4475343A
Cited
US4414813A
Cited
US4438340A
Cited
US4510756A
Cited
US4690102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |