IL42658A - Method and apparatus for generating power - Google Patents
Method and apparatus for generating powerInfo
- Publication number
- IL42658A IL42658A IL42658A IL4265873A IL42658A IL 42658 A IL42658 A IL 42658A IL 42658 A IL42658 A IL 42658A IL 4265873 A IL4265873 A IL 4265873A IL 42658 A IL42658 A IL 42658A
- Authority
- IL
- Israel
- Prior art keywords
- liquid
- pathway
- water
- hydraulic pressure
- liquids
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims 12
- 239000007788 liquid Substances 0.000 claims 27
- 230000037361 pathway Effects 0.000 claims 13
- 239000012528 membrane Substances 0.000 claims 8
- 230000003204 osmotic effect Effects 0.000 claims 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 7
- 230000008020 evaporation Effects 0.000 claims 6
- 238000001704 evaporation Methods 0.000 claims 6
- 239000011259 mixed solution Substances 0.000 claims 4
- 239000000243 solution Substances 0.000 claims 3
- 238000005381 potential energy Methods 0.000 claims 2
- 150000003839 salts Chemical class 0.000 claims 2
- 239000013535 sea water Substances 0.000 claims 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Claims (18)
1. A method of generating power comprising: applying a hydraulic pressure to a first liquid of a first osmotic ' !V pressure and introducing same into a first pathway which is at least partially defined by one face of a semipermeable membrane; introducin a second liquid having a lower hydraulic pressure and a lower osmotic pressure into a second pathway which is least partially defined by the opposite face of the membrane; maintaining the hydraulic pressure difference between liquids on the opposite faces of the membrane at a pressure difference which is less than the osmotic pressure difference between the liquids, at every point in the two pathways, thus effecting by Pressure-Retarded-Osmosis a passage of at least part of the second liquid through the semipermeable membrane, forming a pressurized mixed solution of greater volume than said first liquid introduced into said first pathway; and converting the potential energy stored in the pressurized mixed solution to useful energy.
2. The method according to Claim 1, wherein said energy is converted by passing the increased-volume pressurized first liquid through a turbine generator to generate electrical power.
3. The method according to either of Claims 1 or 2, wherein said first liquid is passed through the first pathway in counter-flow with respect to the second liquid in the second pathway.
4. The method according to any oSe of Claims 1-3, wherein the first and second liquids are saline water solutions having different osmotic pressures.
5. The method according to Claim 4, wherein the first liquid is sea water and the second liquid is water having a lower concentration of salt than sea water. -1 - P.A. 42658/2
6. The method according to Claim 4, wherein the first liquid is a naturally available salt-water body, and the second liquid is derived from a river or ocean feeding the salt-water body.
7. The method according to Claim 4, wherein the first liquid is a body of water to which salt has been artifically added to produce the higher osmotic pressure solution.
8. The method according to any one of Clafais 1-3, wherein the first liquid is fed from an evaporation pond, and wherein the evaporation pond is fed from the outlet of the first pathway after the energy in the first liquid has been converted to power.
9. The method according to Claim 8, including the further 3tep of recovering the water evaporated from the pond.
10. The method according to Claim 8 or 9, including the further step of recovering the concentrated solution and/or solutes resulting from the evaporation of water from the pond.
11. Apparatus for generating power from heat comprising: a semipermeable membrane; means for applying a hydraulic pressure to a first liquid of a first osmotic pressure and introducing same into a first pathway which is at least partially defined by one face of the semipermeable membrane; means for introducing a second liquid having a lower hydraulic pressure and a lower osmotic pressure into a second pathway which is at least partially defined by the opposite face of the membrane; means for maintaining the hydraulic pressure difference between liquids on the opposite faces of the membrance at a pressure difference which is less than the osmotic pressure difference P.A. 42658/2 between the liquids, at every point in the two pathways, thus effecting by Pressure-Retarded-Osmosis a passage of at least part of the second liquid through the semipermeable membrane, forming a pressurized mixed solution of greater volume than said first liquid introduced Into said firs pathway; and means for converting the potential energy stored in the pressurized mixed solution to useful energy.
12. The apparatus according to Claim 10 wherein said converting means comprises a turbine generator generating electrical power.
13. The apparatus according to either of Claims 10 or 11, wherein said pressurizing means comprises a liquid pump.
14. Apparatus according to Claim 13, further including means for applying a portion of said energy to drive the pump .
15. Apparatus according to any one of Claims 11-14, further including an evaporation pond, means feeding the first liquid from the outlet end of the evaporation pond into the inlet and of the first pathway, and means feeding the first liquid from the outlet end of the first pathway after passing through said conversion means into the inlet end of the evaporation pond.
16. A multi-stage system for generating power, each stage comprising the apparatus of any one of Claims 11-15, the hydraulic pressure of the first liquid in the first stage being highest and progressively decreasing through all the stages.
17. -17. A method of generating electrical or mechanical power substantially as described with reference to and as illustrated Ρ.Λ. 42658/2
18. Apparatus for generating electricilK or mechanical power substantially as described with reference to and as illustrated in the accompanying drawings.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL42658A IL42658A (en) | 1973-07-03 | 1973-07-03 | Method and apparatus for generating power |
| US480623A US3906250A (en) | 1973-07-03 | 1974-06-19 | Method and apparatus for generating power utilizing pressure-retarded-osmosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL42658A IL42658A (en) | 1973-07-03 | 1973-07-03 | Method and apparatus for generating power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL42658A0 IL42658A0 (en) | 1973-10-25 |
| IL42658A true IL42658A (en) | 1976-08-31 |
Family
ID=11047207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL42658A IL42658A (en) | 1973-07-03 | 1973-07-03 | Method and apparatus for generating power |
Country Status (1)
| Country | Link |
|---|---|
| IL (1) | IL42658A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971531A (en) * | 2009-12-04 | 2013-03-13 | 通用电气公司 | Economical and sustainable disposal of zero liquid discharge salt byproduct |
-
1973
- 1973-07-03 IL IL42658A patent/IL42658A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102971531A (en) * | 2009-12-04 | 2013-03-13 | 通用电气公司 | Economical and sustainable disposal of zero liquid discharge salt byproduct |
| CN102971531B (en) * | 2009-12-04 | 2016-08-31 | 通用电气公司 | The economy of zero liquid discharge salt byproduct and continuable disposal |
Also Published As
| Publication number | Publication date |
|---|---|
| IL42658A0 (en) | 1973-10-25 |
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