DE10361203A1 - Method for converting thermal energy into mechanical energy uses low-pressure expansion device to expand vaporous working medium whereby energy is returned to evaporator used to evaporate another working medium - Google Patents
Method for converting thermal energy into mechanical energy uses low-pressure expansion device to expand vaporous working medium whereby energy is returned to evaporator used to evaporate another working medium Download PDFInfo
- Publication number
- DE10361203A1 DE10361203A1 DE2003161203 DE10361203A DE10361203A1 DE 10361203 A1 DE10361203 A1 DE 10361203A1 DE 2003161203 DE2003161203 DE 2003161203 DE 10361203 A DE10361203 A DE 10361203A DE 10361203 A1 DE10361203 A1 DE 10361203A1
- Authority
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- Germany
- Prior art keywords
- working medium
- energy
- heat
- evaporator
- expansion device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 239000002250 absorbent Substances 0.000 claims description 11
- 230000002745 absorbent Effects 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000011877 solvent mixture Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 239000003049 inorganic solvent Substances 0.000 claims 2
- 229910001867 inorganic solvent Inorganic materials 0.000 claims 2
- 239000003960 organic solvent Substances 0.000 claims 2
- 239000003586 protic polar solvent Substances 0.000 claims 2
- 238000000926 separation method Methods 0.000 claims 2
- 239000003463 adsorbent Substances 0.000 claims 1
- 238000009835 boiling Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000005338 heat storage Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 230000002040 relaxant effect Effects 0.000 claims 1
- 230000035939 shock Effects 0.000 claims 1
- 230000009466 transformation Effects 0.000 claims 1
- 238000009834 vaporization Methods 0.000 claims 1
- 230000008016 vaporization Effects 0.000 claims 1
- 239000012071 phase Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 239000003380 propellant Substances 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- F01K25/06—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 mixtures of different fluids
- F01K25/065—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 mixtures of different fluids with an absorption fluid remaining at least partly in the liquid state, e.g. water for ammonia
-
- 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
- F01K25/06—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 mixtures of different fluids
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
Die Verwendung von Rootsgebläsen als Niederdruck-Entspannungsmotor eröffnet insbesondere bei der Nutzung von Abwärme kleiner oder gleich 100°C zum Antrieb von Pumpen und Generatoren zum einen die Möglichkeit, den Prozess durch Einspritzung von Absorptionsmitteln zu unterstützen, zum anderen, wegen der geringen Druck- und damit Temperaturdifferenzen, die Kondensationsenergie des Treibmittels wieder auf ein erhöhtes Temperaturniveau anzuheben. Erfindungsgemäß wird als Treibmittel ein Lösemittelgemisch verwendet, das azeotrop siedet und von dem mindestens eine Komponente ein reversibel immobilisierbares Lösemittel ist, das sich durch physikalisch-chemische Veränderung, wie pH-Verschiebung, Molenbruch und Temperatur in seiner Flüchtigkeit und/oder in seinem Dampfdruck so verändert, dass es durch Ionisieren oder Komplexbildung aus der Dampfphase reversibel immobilisiert werden kann und deshalb in seiner immobilisierten Form als Absorbens verwendet wird.The Use of Roots blowers As a low-pressure expansion engine opens especially in the Use of waste heat less than or equal to 100 ° C for driving pumps and generators on the one hand the possibility to assist the process by injection of absorbents, to others, because of the low pressure and thus temperature differences, the condensation energy of the propellant back to an elevated temperature level to raise. According to the invention as Propellant a solvent mixture used which azeotropically boils and of the at least one component is a reversibly immobilizable solvent that is characterized by physicochemical change, such as pH shift, mole fraction and temperature in its volatility and / or in its vapor pressure changed so that it by ionizing or complex formation from the vapor phase are reversibly immobilized can and therefore used in its immobilized form as an absorbent becomes.
Verdampft man Lösemittelgemische, so stellt sich über der Flüssigkeit ein Partialdruckverhältnis ein, das dem Molverhältnis der Komponenten in der Flüssigphase entspricht. Verwendet man azeotrop verdampfende Lösungen, so lassen sich je nach Typ die Verdampfungstemperaturen absenken, so dass sie unter den Kondensationstemperaturen der einzelnen Komponenten liegen. Absorbiert man aus der Gasphase adiabat eine Komponente, so geht die der Entropieabnahme entsprechende Wärme auf die verbleibende Gasphase über. Der Entzug der Kondensationswärme des Treibmittels kann dadurch auf einem erhöhten Temperaturniveau erfolgen. Erfindungsgemäß erwärmt sich der Treibdampf damit trotz Entspannung, so dass er ohne weitere Transformation in dem Verdampfer des Treibmittelgemisches niedergeschlagen werden kann, sofern die Verdampfung durch Zumischen der absorbierten Komponente durch Remobilisierung am Azeotroppunkt gehalten wird.evaporated solvent mixtures, so turns over the liquid a partial pressure ratio, the molar ratio of the components in the liquid phase equivalent. If one uses azeotropic solutions, so you can lower the evaporation temperatures depending on the type so that they are below the condensation temperatures of the individual components lie. If one absorbs adiabatically a component from the gas phase, Thus, the Entropieabnahme the heat corresponding to the remaining gas phase. Of the Withdrawal of condensation heat the propellant can be done at an elevated temperature level. According to the invention heats up the driving steam so that despite relaxation, so he without further Transform deposited in the evaporator of the blowing agent mixture can, if the evaporation by admixing the absorbed Component is held by remobilization at the azeotrope.
Während der Verdichtung wird in den Entspannungsraum ein Absorptionsmittel eingespritzt und/oder der Entspannung nachgeschaltet wird Lösemittel in einem mit Absorptionsmittel betriebenen Wäscher niedergeschlagen.During the Compression is injected into the relaxation room, an absorbent and / or the relaxation is followed by solvent in one with absorbent operated scrubbers dejected.
Als Absorptionsmittel wird ein reversibel immobilisierbares Lösemittel verwendet, das in der nicht-immobilisierten Form als Treibdampfkomponente enthalten ist. Durch z. B. Ionisieren des Absorbens, vorteilhaft durch Elektrolyse des Lösemittels oder zugesetzter Elektrolyte, werden die das Absorbens durchströmenden Dämpfe ebenfalls ionisiert, so dass sich der Dampfdruck so absenkt, dass sich der Dampf der reversibel immobilisierbaren Komponente im als Absorbens genutzten Lösemittel niederschlägt.When Absorbent becomes a reversibly immobilizable solvent used in the non-immobilized form as a motive steam component is included. By z. B. ionizing the absorbent, advantageous by electrolysis of the solvent or added electrolytes, the vapors flowing through the absorbent are also ionized, so that the vapor pressure lowers so that the Steam of the reversibly immobilisable component in as an absorbent used solvents reflected.
Das Molverhältnis des Gemisches wird erfindungsgemäß so gewählt, dass der Druck in der Entspannung durch die Reduzierung der Anzahl der in der Gasphase verbleibenden Moleküle stärker abnimmt, als er durch die Erwärmung des Restgases zunimmt.The molar ratio of the mixture is chosen according to the invention such that the pressure in the relaxation by reducing the number of in the gas phase remaining molecules decreases more than it passes through the warming of the residual gas increases.
In
der beigefügten
Abbildung wird die Energiegewinnung mit Rückführung der Kondensationswärmein an
einem Rootsgebläse
schematisch dargestellt. In einem Verdampfer (
Der
Entspannung nachgeschaltet ist ein Wäscher (
Die
Ionisierung wird durch eine Elektrolysevorrichtung (
Das
Betriebsmittel wird im Teilstrom mit der Förderpumpe (
Nach
der Absorption der reversibel immobilisierbaren Phase wird der restliche
Treibdampf in den Verdampfer zurückgeführt und
am Wärmetauscher (
Über die
Förderpumpe
(
Claims (29)
Priority Applications (18)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003161203 DE10361203A1 (en) | 2003-12-24 | 2003-12-24 | Method for converting thermal energy into mechanical energy uses low-pressure expansion device to expand vaporous working medium whereby energy is returned to evaporator used to evaporate another working medium |
| DE502004004776.9T DE502004004776C5 (en) | 2003-12-22 | 2004-12-22 | METHOD FOR CONVERTING HEAT ENERGY TO MECHANICAL ENERGY WITH A LOW PRESSURE RELAXATION DEVICE |
| PCT/EP2004/053651 WO2005061973A1 (en) | 2003-12-22 | 2004-12-22 | Method and system for increasing the temperature of a vaporous working medium |
| EP04804983.7A EP1706598B1 (en) | 2003-12-22 | 2004-12-22 | Method and installation for converting heat energy from refrigerating machines |
| DE202004021185U DE202004021185U1 (en) | 2003-12-22 | 2004-12-22 | Method for converting thermal energy into mechanical energy uses low-pressure expansion device to expand vaporous working medium whereby energy is returned to evaporator used to evaporate another working medium |
| EP04816348A EP1702140B1 (en) | 2003-12-22 | 2004-12-22 | Method for converting heat energy into mechanical energy with a low-pressure expansion device |
| EP04804988.6A EP1706599B1 (en) | 2003-12-22 | 2004-12-22 | Method and system for converting heat energy into mechanical energy |
| EP04804984A EP1702139A1 (en) | 2003-12-22 | 2004-12-22 | Device and method for converting heat energy into mechanical energy |
| EP04804985A EP1706681A1 (en) | 2003-12-22 | 2004-12-22 | Method and system for increasing the temperature of a vaporous working medium |
| ES04816348T ES2293384T3 (en) | 2003-12-22 | 2004-12-22 | PROCEDURE FOR ENERGY CONVERSION ENDS IN MECHANIZED ENERGY WITH A LOW PRESSURE EXPANSION DEVICE. |
| PCT/EP2004/053649 WO2005066465A1 (en) | 2003-12-22 | 2004-12-22 | Method and installation for converting heat energy from refrigerating machines |
| ES04804988.6T ES2624638T3 (en) | 2003-12-22 | 2004-12-22 | Procedure and installation for the transformation of thermal energy produced into mechanical energy |
| PCT/EP2004/053654 WO2005061858A1 (en) | 2003-12-22 | 2004-12-22 | Method for converting heat energy into mechanical energy with a low-pressure expansion device |
| PCT/EP2004/053655 WO2005066466A1 (en) | 2003-12-22 | 2004-12-22 | Method and system for converting heat energy into mechanical energy |
| AT04816348T ATE371101T1 (en) | 2003-12-22 | 2004-12-22 | METHOD FOR CONVERTING THERMAL ENERGY INTO MECHANICAL ENERGY USING A LOW PRESSURE RELAXATION DEVICE |
| PCT/EP2004/053650 WO2005061857A1 (en) | 2003-12-22 | 2004-12-22 | Device and method for converting heat energy into mechanical energy |
| US10/583,936 US7726128B2 (en) | 2003-12-22 | 2004-12-22 | Apparatus and method for converting heat energy to mechanical energy |
| US10/583,925 US8132413B2 (en) | 2003-12-22 | 2004-12-22 | Method of transforming heat energy to mechanical energy in a low-pressure expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003161203 DE10361203A1 (en) | 2003-12-24 | 2003-12-24 | Method for converting thermal energy into mechanical energy uses low-pressure expansion device to expand vaporous working medium whereby energy is returned to evaporator used to evaporate another working medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10361203A1 true DE10361203A1 (en) | 2005-07-21 |
Family
ID=34683882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2003161203 Withdrawn DE10361203A1 (en) | 2003-12-22 | 2003-12-24 | Method for converting thermal energy into mechanical energy uses low-pressure expansion device to expand vaporous working medium whereby energy is returned to evaporator used to evaporate another working medium |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10361203A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009030283A3 (en) * | 2007-08-31 | 2010-03-18 | Siemens Aktiengesellschaft | Method and device for converting thermal energy of a low temperature heat source into mechanical energy |
-
2003
- 2003-12-24 DE DE2003161203 patent/DE10361203A1/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009030283A3 (en) * | 2007-08-31 | 2010-03-18 | Siemens Aktiengesellschaft | Method and device for converting thermal energy of a low temperature heat source into mechanical energy |
| RU2485331C2 (en) * | 2007-08-31 | 2013-06-20 | Сименс Акциенгезелльшафт | Method and device for conversion of thermal energy of low-temperature source of heat into mechanical energy |
| CN101842557B (en) * | 2007-08-31 | 2013-09-04 | 西门子公司 | Method and device for converting thermal energy of a low temperature heat source into mechanical energy |
| KR101398312B1 (en) | 2007-08-31 | 2014-05-27 | 지멘스 악티엔게젤샤프트 | Method and device for converting thermal energy of a low temperature heat source into mechanical energy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8139 | Disposal/non-payment of the annual fee |