US3774392A - Installation including a prime mover and means for extracting energy from a hot fluid medium and using it to drive the prime mover - Google Patents
Installation including a prime mover and means for extracting energy from a hot fluid medium and using it to drive the prime mover Download PDFInfo
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- US3774392A US3774392A US00215894A US3774392DA US3774392A US 3774392 A US3774392 A US 3774392A US 00215894 A US00215894 A US 00215894A US 3774392D A US3774392D A US 3774392DA US 3774392 A US3774392 A US 3774392A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
Definitions
- This invention relates to an installation including a prime mover and means for extracting energy from a hot fluid medium and using it to drive the prime mover.
- the invention also relates to a method of extracting energy from a hot fluid medium and using it to drive a prime mover.
- an installation comprising a heat exchanger in which there is an emulsion of a refrigerant material in a liquid, means for passing a hot fluid medium through the heat exchanger to heat the emulsion without coming into contact with it and to produce refrigerant vapor from the emulsion, a prime mover which is driven by the refrigerant vapor, means for bringing into contact with a liquid the vapor which has done work in the prime mover whereby the vapor is condensed and means for supplying the condensate to the emulsion in the heat exchanger.
- a method of extracting energy from a hot fluid medium and using it to drive a prime mover comprising passing the hot fluid medium through a heat exchanger in which there is an emulsion of a refrigerant material in a liquid so that the emulsion is heated without coming into contact with the hot fluid medium and refrigerant vapor is produced from the emulsion, using the refrigerant vapor to drive the prime mover, bringing into contact with a liquid the vapor which has done work in the prime mover whereby the vapor is condensed and supplying the condensate to the emulsion in the heat exchanger.
- the liquid which with the refrigerant material forms the emulsion is water, in which case the refrigerant material may be Freon (a registered trade mark).
- the liquid which condenses the vapor which has done work in the prime mover is preferably also water and it is advantageous for it to flow repeatedly round a closed path, through one vessel in which it comes into contact with the refrigerant vapor and condenses it and through another heat exchanger in which it is itself cooled.
- the prime mover may be an engine or a turbine.
- the prime mover is an engine referenced l and drives a shaft 11.
- the hot fluid medium is waste steam at 20 p.s.i.g. and it is passed through the shell of a heat 2 ing the engine after doing work in it proceeds, possibly with some condensate,- to a vessel 3 in which it comes into direct contact with water and is thereby condensed.
- the water is pumped by a pump 2 repeatedly round a closed path, through the vessel 3 and through the shell of another heat exchanger 5 of the tube-andshell type, through the tubes of which cooling air or water passes to cool the water before it returns to the vessel 3.
- Condensed refrigerant is pumped from the vessel 3 to the separating vessel 9 by a pump 6 and from there it is pumped by the pump 8 to the tubes of the heat exchanger 10.
- a pump 7 transfers water from the vessel 3 to the'vessel 9 when a valve 12 is open.
- the valve is controlled by a signal from a device 13 which monitors the liquid level in the vessel 3, the arrangement being such that the liquid level is maintained constant.
- a valve 14 in series with the pump 6 is controlled exchanger 10 of the tube-and-shell type.
- the tubes of the heat exchanger contain an emulsion of Freeon 12" in water.
- Some of the Freon is vaporized and the vapor passes, with some liquid, out of the heat exchanger into a separating vessel 9 from which liquid is pumped back to the tubes of the heat exchanger 10 by a pump 8 and refrigerant vapor passes through an expansion valve 4 to the engine, which it drives, entering at 600 p.s.i.a. and leaving at l 15 p.s.i.a.
- the vapor leavby a signal from a device 15 which monitors the liquid level in the vessel 9, the arrangement being such that this liquid level too is maintained constant.
- Thev emulsion contains a non-volatile emulsifying agent.
- the pressures could, of course, be substantially different from those mentioned above. Also, a refrigerant material other than Freon could be employed.
- a double or multiple effect system could be obtained by using the cooled fluid leaving the shell of the heat exchanger 10 or the heated fluid leaving the tubes of the heat exchanger 5 to vaporize refrigerant in another heat exchanger in another installation like the illustrated one.
- An energy conversion installation comprising an emulsion of a first liquid in a second liquid, heating means for heating said emulsion whereby one of said liquids is at least partially vaporized, a prime mover arranged to receive and be driven by the vapor of said one liquid and a condensing means arranged to receive from the prime mover and condense vapor of said one liquid which has done work in the prime mover, the condensing means communicating with said emulsion at said heating means to return .the condensed vapor thereto.
- heating means is a heat exchanger means in which said emulsion is heated by placing it in heat exchange relationship through indirect contact with a hot fluid medium flowing through the heat exchanger means.
- said condensing means comprises a further vessel in which direct contact between the vapor of said one liquid and a liquid medium takes place, a further heat exchanger in which said liquid medium is cooled and means for causing said liquid medium to flow in a closed circuit through said further vessel and through-said further heat exchanger and the installation further comprises means for supplying the condensed said one liquid from said further vessel to said separating vessel.
- An installation according to claim 4 further comprising means for so controlling the flow of the condensate from said further vessel to said separating vessel that the liquid level in the latter remains constant.
- the condensing means comprises a further vessel in which the contact takes place, a further heat exchanger in which said liquid medium is cooled and means for causing said liquid medium to flow in a closed circuit through said further vessel and through said further heat exchanger.
- a method of driving a prime mover comprising heating an emulsion of a first liquid in a second liquid so that vapor is produced from one of said liquids, using the vapor from said one liquid to drive the prime mover, condensing the vapor of said one liquid which has done work in the prime mover and supplying the condensed said one liquid to the emulsion being heated.
- a method according to claim 10 in which the emulsion is heated in a heat exchanger means through which is passed a hot fluid medium in heat exchange relationship through indirect contact with the emulsion.
- a method according to claim 11 further comprising separating vapor and said one liquid leaving said heat exchanger means and returning the liquid to said heat exchanger means.
- a method according to claim 13 further comprising causing to flow in a closed circuit the liquid medium which comes into contact with the vapor which has done work in the prime mover and cooling said liquid medium in the closed circuit.
- An energy conversion installation comprising a heating means for heating an emulsion of a first liquid in a second liquid whereby one of said liquids is at least partially vaporized, a prime mover which is driven by vapor of said one liquid, a condensing vessel in which contact takes place between a liquid medium and the vapor which i has done work in the prime mover whereby the vapor is condensed, a first outlet from the condensing vessel, a second outlet from the condensing vessel higher than the first outlet, first pump means connected to the first outlet for pumping one of said one liquid and said liquid medium out of the condensing vessel through the first outlet, second pump means connected to the second outlet for pumping the other of said one liquid and said liquid medium out of the condensing vessel through the second outlet and means for supplying both the pumped out liquids to the emulsion at said heating means.
- heating means is a heat exchanger means in which said emulsion is heated by placing it in heat exchange relationship through indirect contact with a hot fluid medium flowing through the heat exchanger means.
- An installation according to claim 18 further comprising a separating vessel connected to the heat exchanger means to receive from it said one liquid and its vapor, of which liquid is separated from the vapor in the separating vessel, and means for returning said one liquid from the separating vessel to the heat exchanger means.
- An installation according to claim 20 further comprising means for so controlling the flow of the liquid from said first pump means that the liquid level in the separating vessel remains constant.
- An installation according to claim 17 further comprising a further heat exchanger in which there is cooled the liquid medium which contacts the vapor that has done work in the prime mover and means for causing this liquid medium to flow in a closed circuit through said condensing vessel and through said further heat exchanger.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A hot fluid medium is passed through a heat exchanger and heats in it an emulsion of a refrigerant material in a liquid. Refrigerant vapor thereby produced drives a prime mover and vapor that has done work in the prime mover is brought into contact with a liquid and thereby condensed. The condensate is supplied to the emulsion in the heat exchanger.
Description
United States Patent [1 1 Davies et al.
[ 5] Nov. 27, 1973 INSTALLATION INCLUDING A PRIME MOVER AND MEANS FOR EXTRACTING ENERGY FROM A HOT FLUID MEDIUM AND USING IT TO DRIVE THE PRIME MOVER [76] Inventors: John Moseley Davies, Lavender Cottage, Weeden Ln., Amersham; John Colin Clarke, Darien 6 Abbey Ln., Northwich, both of England [22] Filed: Jan. 6, 1972 [2]] Appl. No.: 215,894
Related US. Application Data [63] Continuation of Ser. No. 33,579, May 1, 1970,
abandoned.
[52] US. Cl. 60/36, 60/38 [51] Int. Cl. F01k 25/10 [58] Field of Search 60/36, 39, 40
[56] References Cited I UNITED STATES PATENTS 427,399 5/1890 Campbell 60/36 427,40] 5/l890 Campbell 60/36 FOREIGN PATENTS OR APPLICATIONS 294,882 9/ 1929 Great Britain 60/36 Primary Examiner-Martin P. Schwadron Assistant Examiner-Allen M. Ostrager Attorney-Brumbaugh, Graves, Donohue & Raymond [57] ABSTRACT A hot fluid medium is passed through a heat exchanger and heats in it an emulsion of a refrigerant material in a liquid. Refrigerant vapor thereby produced drives a prime mover and vapor that has done work in the prime mover is brought into contact with a liquid and thereby condensed. The condensate is supplied to the emulsion in the heat exchanger.
24 Claims, 1 Drawing Figure Patented Nov; 27, 1973 INVENTORS.
JOHN MOSELEY DAVIES 8 JOHN COLIN CLARKE their ATTORNEYS.
1 INSTALLATION INCLUDING A PRIME MOVER AND MEANS FOR EXTRACTING ENERGY FROM A HOT FLUID MEDIUM AND USING IT TO DRIVE TI-IE PRIME MOVER This is a continuation, of application Ser. No. 33,579 frled May 1, 1970, now abandoned.
This invention relates to an installation including a prime mover and means for extracting energy from a hot fluid medium and using it to drive the prime mover.
The invention also relates to a method of extracting energy from a hot fluid medium and using it to drive a prime mover.
According to one aspect of the invention, there is provided an installation comprising a heat exchanger in which there is an emulsion of a refrigerant material in a liquid, means for passing a hot fluid medium through the heat exchanger to heat the emulsion without coming into contact with it and to produce refrigerant vapor from the emulsion, a prime mover which is driven by the refrigerant vapor, means for bringing into contact with a liquid the vapor which has done work in the prime mover whereby the vapor is condensed and means for supplying the condensate to the emulsion in the heat exchanger.
According to another aspect of the invention, there is provided a method of extracting energy from a hot fluid medium and using it to drive a prime mover comprising passing the hot fluid medium through a heat exchanger in which there is an emulsion of a refrigerant material in a liquid so that the emulsion is heated without coming into contact with the hot fluid medium and refrigerant vapor is produced from the emulsion, using the refrigerant vapor to drive the prime mover, bringing into contact with a liquid the vapor which has done work in the prime mover whereby the vapor is condensed and supplying the condensate to the emulsion in the heat exchanger.
Preferably, the liquid which with the refrigerant material forms the emulsion is water, in which case the refrigerant material may be Freon (a registered trade mark). The liquid which condenses the vapor which has done work in the prime mover is preferably also water and it is advantageous for it to flow repeatedly round a closed path, through one vessel in which it comes into contact with the refrigerant vapor and condenses it and through another heat exchanger in which it is itself cooled. The prime mover may be an engine or a turbine.
An example in accordance with the invention is described below with reference to the accompanying drawing, which diagrammatically illustrates an installation including a prime mover and means for extracting energy from a hot fluid medium and using it to drive the prime mover.
The prime mover is an engine referenced l and drives a shaft 11. The hot fluid medium is waste steam at 20 p.s.i.g. and it is passed through the shell of a heat 2 ing the engine after doing work in it proceeds, possibly with some condensate,- to a vessel 3 in which it comes into direct contact with water and is thereby condensed. The water is pumped by a pump 2 repeatedly round a closed path, through the vessel 3 and through the shell of another heat exchanger 5 of the tube-andshell type, through the tubes of which cooling air or water passes to cool the water before it returns to the vessel 3. Condensed refrigerant is pumped from the vessel 3 to the separating vessel 9 by a pump 6 and from there it is pumped by the pump 8 to the tubes of the heat exchanger 10. A pump 7 transfers water from the vessel 3 to the'vessel 9 when a valve 12 is open. The valve is controlled by a signal from a device 13 which monitors the liquid level in the vessel 3, the arrangement being such that the liquid level is maintained constant. A valve 14 in series with the pump 6 is controlled exchanger 10 of the tube-and-shell type. The tubes of the heat exchanger contain an emulsion of Freeon 12" in water. Some of the Freon is vaporized and the vapor passes, with some liquid, out of the heat exchanger into a separating vessel 9 from which liquid is pumped back to the tubes of the heat exchanger 10 by a pump 8 and refrigerant vapor passes through an expansion valve 4 to the engine, which it drives, entering at 600 p.s.i.a. and leaving at l 15 p.s.i.a. The vapor leavby a signal from a device 15 which monitors the liquid level in the vessel 9, the arrangement being such that this liquid level too is maintained constant.
Thev emulsion contains a non-volatile emulsifying agent.
The pressures could, of course, be substantially different from those mentioned above. Also, a refrigerant material other than Freon could be employed.
A double or multiple effect system could be obtained by using the cooled fluid leaving the shell of the heat exchanger 10 or the heated fluid leaving the tubes of the heat exchanger 5 to vaporize refrigerant in another heat exchanger in another installation like the illustrated one.
We claim:
1. An energy conversion installation comprising an emulsion of a first liquid in a second liquid, heating means for heating said emulsion whereby one of said liquids is at least partially vaporized, a prime mover arranged to receive and be driven by the vapor of said one liquid and a condensing means arranged to receive from the prime mover and condense vapor of said one liquid which has done work in the prime mover, the condensing means communicating with said emulsion at said heating means to return .the condensed vapor thereto.
2. An installation according to claim 1 in which said heating means is a heat exchanger means in which said emulsion is heated by placing it in heat exchange relationship through indirect contact with a hot fluid medium flowing through the heat exchanger means.
3. An installation according to claim 2 and further comprising a separating vessel connected to the heat exchanger means to receive from it said one liquid and its vapor which are separated in the separating vessel and means for returning said one liquid from the separating vessel to the heat exchanger means.
4. An installation according to claim 3 wherein said condensing means comprises a further vessel in which direct contact between the vapor of said one liquid and a liquid medium takes place, a further heat exchanger in which said liquid medium is cooled and means for causing said liquid medium to flow in a closed circuit through said further vessel and through-said further heat exchanger and the installation further comprises means for supplying the condensed said one liquid from said further vessel to said separating vessel.
5. An installation according to claim 4 further comprising means for so controlling the flow of the condensate from said further vessel to said separating vessel that the liquid level in the latter remains constant.
6. An installation according to claim 4 in which there are control means for so controlling the flow of the condensate from said further vessel to said separating vessel that the liquid level in said further vessel remains constant.
7. An installation according to claim 1 in which said condensing means condenses the vapor of said one liquid by bringing it into direct contact with a liquid medium.
8. An installation according to claim 7 wherein the condensing means comprises a further vessel in which the contact takes place, a further heat exchanger in which said liquid medium is cooled and means for causing said liquid medium to flow in a closed circuit through said further vessel and through said further heat exchanger.
9. An installation according to claim 1 in which said second liquid is water and said first liquid is Freon.
10. A method of driving a prime mover, comprising heating an emulsion of a first liquid in a second liquid so that vapor is produced from one of said liquids, using the vapor from said one liquid to drive the prime mover, condensing the vapor of said one liquid which has done work in the prime mover and supplying the condensed said one liquid to the emulsion being heated.
11. A method according to claim 10 in which the emulsion is heated in a heat exchanger means through which is passed a hot fluid medium in heat exchange relationship through indirect contact with the emulsion.
12. A method according to claim 11 further comprising separating vapor and said one liquid leaving said heat exchanger means and returning the liquid to said heat exchanger means.
13. A method according to claim 10 in which the vapor of said one liquid is condensed by bringing it into direct contact with a liquid medium.
14. A method according to claim 13 further comprising causing to flow in a closed circuit the liquid medium which comes into contact with the vapor which has done work in the prime mover and cooling said liquid medium in the closed circuit.
15. A method according to claim 13 in which said liquid medium is more of the one of said first and second liquids other than said one liquid.
16. A method according to claim 15 in which said first liquid is Freon and said second liquid is water.
17. An energy conversion installation comprising a heating means for heating an emulsion of a first liquid in a second liquid whereby one of said liquids is at least partially vaporized, a prime mover which is driven by vapor of said one liquid, a condensing vessel in which contact takes place between a liquid medium and the vapor which i has done work in the prime mover whereby the vapor is condensed, a first outlet from the condensing vessel, a second outlet from the condensing vessel higher than the first outlet, first pump means connected to the first outlet for pumping one of said one liquid and said liquid medium out of the condensing vessel through the first outlet, second pump means connected to the second outlet for pumping the other of said one liquid and said liquid medium out of the condensing vessel through the second outlet and means for supplying both the pumped out liquids to the emulsion at said heating means.
18. An installation according to claim 17 in which said heating means is a heat exchanger means in which said emulsion is heated by placing it in heat exchange relationship through indirect contact with a hot fluid medium flowing through the heat exchanger means.
19. An installation according to claim 18 and further comprising the emulsion and the hot fluid medium in the heat exchanger means.
20. An installation according to claim 18 further comprising a separating vessel connected to the heat exchanger means to receive from it said one liquid and its vapor, of which liquid is separated from the vapor in the separating vessel, and means for returning said one liquid from the separating vessel to the heat exchanger means.
21. An installation according to claim 20 in which said means for supplying both the pumped out liquids to the heat exchanger means comprises conduit means leading to said separating vessel from said pump means in conjunction with said means for returning said one liquid from the separating vessel to the heat exchanger means.
22. An installation according to claim 20 further comprising means for so controlling the flow of the liquid from said first pump means that the liquid level in the separating vessel remains constant.
23. An installation according to claim 17 further comprising a further heat exchanger in which there is cooled the liquid medium which contacts the vapor that has done work in the prime mover and means for causing this liquid medium to flow in a closed circuit through said condensing vessel and through said further heat exchanger.
24. An installation according to claim 17 and further comprising means for so controlling the flow of the liquid from said second pump means that the liquid level in said condensing vessel remains constant.
Claims (24)
1. An energy conversion installation comprising an emulsion of a first liquid in a second liquid, heating means for heating said emulsion whereby one of said liquids is at least partially vaporized, a prime mover arranged to receive and be driven by the vapor of said one liquid and a condensing means arranged to receive from the prime mover and condense vapor of said one liquid which has done work in the prime mover, the condensing means communicating with said emulsion at said heating means to return the condensed vapor thereto.
2. An installation according to claim 1 in which said heating means is a heat exchanger means in which said emulsion is heated by placing it in heat exchange relationship through indirect contact with a hot fluid medium flowing through the heat exchanger means.
3. An installation according to claim 2 and further comprising a separating vessel connected to the heat exchanger means to receive from it said one liquid and its vapor which are separated in the separating vessel and means for returning said one liquid from the separating vessel to the heat exchanger means.
4. An installation according to claim 3 wherein said condensing means comprises a further vessel in which direct contact between the vapor of said one liquid and a liquid medium takes place, a further heat exchanger in which said liquid medium is cooled and means for causing said liquid medium to flow in a closed circuit through said further vessel and through said further heat exchanger and the installation further comprises means for supplying the condensed said one liquid from said further vessel to said separating vessel.
5. An installation according to claim 4 further comprising means for so controlling the flow of the condensate from said further vessel to said separating vessel that the liquid level in the latter remains constant.
6. An installation according to claim 4 in which there are control means for so controlling the flow of the condensate from said further vessel to said separating vessel that the liquid level in said further vessel remains constant.
7. An installation according to claim 1 in which said condensing means condenses the vapor of said one liquid by bringing it into dIrect contact with a liquid medium.
8. An installation according to claim 7 wherein the condensing means comprises a further vessel in which the contact takes place, a further heat exchanger in which said liquid medium is cooled and means for causing said liquid medium to flow in a closed circuit through said further vessel and through said further heat exchanger.
9. An installation according to claim 1 in which said second liquid is water and said first liquid is Freon.
10. A method of driving a prime mover, comprising heating an emulsion of a first liquid in a second liquid so that vapor is produced from one of said liquids, using the vapor from said one liquid to drive the prime mover, condensing the vapor of said one liquid which has done work in the prime mover and supplying the condensed said one liquid to the emulsion being heated.
11. A method according to claim 10 in which the emulsion is heated in a heat exchanger means through which is passed a hot fluid medium in heat exchange relationship through indirect contact with the emulsion.
12. A method according to claim 11 further comprising separating vapor and said one liquid leaving said heat exchanger means and returning the liquid to said heat exchanger means.
13. A method according to claim 10 in which the vapor of said one liquid is condensed by bringing it into direct contact with a liquid medium.
14. A method according to claim 13 further comprising causing to flow in a closed circuit the liquid medium which comes into contact with the vapor which has done work in the prime mover and cooling said liquid medium in the closed circuit.
15. A method according to claim 13 in which said liquid medium is more of the one of said first and second liquids other than said one liquid.
16. A method according to claim 15 in which said first liquid is Freon and said second liquid is water.
17. An energy conversion installation comprising a heating means for heating an emulsion of a first liquid in a second liquid whereby one of said liquids is at least partially vaporized, a prime mover which is driven by vapor of said one liquid, a condensing vessel in which contact takes place between a liquid medium and the vapor which has done work in the prime mover whereby the vapor is condensed, a first outlet from the condensing vessel, a second outlet from the condensing vessel higher than the first outlet, first pump means connected to the first outlet for pumping one of said one liquid and said liquid medium out of the condensing vessel through the first outlet, second pump means connected to the second outlet for pumping the other of said one liquid and said liquid medium out of the condensing vessel through the second outlet and means for supplying both the pumped out liquids to the emulsion at said heating means.
18. An installation according to claim 17 in which said heating means is a heat exchanger means in which said emulsion is heated by placing it in heat exchange relationship through indirect contact with a hot fluid medium flowing through the heat exchanger means.
19. An installation according to claim 18 and further comprising the emulsion and the hot fluid medium in the heat exchanger means.
20. An installation according to claim 18 further comprising a separating vessel connected to the heat exchanger means to receive from it said one liquid and its vapor, of which liquid is separated from the vapor in the separating vessel, and means for returning said one liquid from the separating vessel to the heat exchanger means.
21. An installation according to claim 20 in which said means for supplying both the pumped out liquids to the heat exchanger means comprises conduit means leading to said separating vessel from said pump means in conjunction with said means for returning said one liquid from the separating vessel to the heat exchanger means.
22. An installation according to claim 20 further comprising means for so controlling the flow of the liquid from said first pump meAns that the liquid level in the separating vessel remains constant.
23. An installation according to claim 17 further comprising a further heat exchanger in which there is cooled the liquid medium which contacts the vapor that has done work in the prime mover and means for causing this liquid medium to flow in a closed circuit through said condensing vessel and through said further heat exchanger.
24. An installation according to claim 17 and further comprising means for so controlling the flow of the liquid from said second pump means that the liquid level in said condensing vessel remains constant.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21589472A | 1972-01-06 | 1972-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3774392A true US3774392A (en) | 1973-11-27 |
Family
ID=22804843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00215894A Expired - Lifetime US3774392A (en) | 1972-01-06 | 1972-01-06 | Installation including a prime mover and means for extracting energy from a hot fluid medium and using it to drive the prime mover |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3774392A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US427401A (en) * | 1890-05-06 | campbell | ||
| US427399A (en) * | 1890-05-06 | Joseph ii | ||
| GB294882A (en) * | 1927-07-30 | 1929-09-12 | Gen Electric | Improvements in and relating to vapour engines |
-
1972
- 1972-01-06 US US00215894A patent/US3774392A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US427401A (en) * | 1890-05-06 | campbell | ||
| US427399A (en) * | 1890-05-06 | Joseph ii | ||
| GB294882A (en) * | 1927-07-30 | 1929-09-12 | Gen Electric | Improvements in and relating to vapour engines |
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