DE102012009459A1 - Apparatus for converting thermal energy into mechanical energy by Rankine cycle process, comprises circulating line for guiding working fluid, evaporator, working machine and capacitor, where working fluid is carbon dioxide - Google Patents
Apparatus for converting thermal energy into mechanical energy by Rankine cycle process, comprises circulating line for guiding working fluid, evaporator, working machine and capacitor, where working fluid is carbon dioxide Download PDFInfo
- Publication number
- DE102012009459A1 DE102012009459A1 DE201210009459 DE102012009459A DE102012009459A1 DE 102012009459 A1 DE102012009459 A1 DE 102012009459A1 DE 201210009459 DE201210009459 DE 201210009459 DE 102012009459 A DE102012009459 A DE 102012009459A DE 102012009459 A1 DE102012009459 A1 DE 102012009459A1
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- DE
- Germany
- Prior art keywords
- working fluid
- heat
- evaporator
- working
- energy
- 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.)
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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
- F01K25/08—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
- F01K25/103—Carbon dioxide
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Umwandlung thermischer Energie in mechanische Energie mittels eines Rankine-Kreisprozesses.The invention relates to a device for converting thermal energy into mechanical energy by means of a Rankine cycle.
Im Oberbegriff des Anspruchs 1 wird von der
Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Vorrichtung dahingehend weiter zu entwickeln, dass bei geringen Kosten eine noch effizientere Nutzung natürlicher Wärmequellen und/oder von Abwärmequellen möglich ist.The invention has for its object to further develop a generic device to the effect that at low cost even more efficient use of natural heat sources and / or waste heat sources is possible.
Diese Aufgabe wird mit einer Vorrichtung gemäß dem Anspruch 1 gelöst.This object is achieved with a device according to claim 1.
Das erfindungsgemäß als Arbeitsfluid genutzte Kohlendioxid, dessen kritischer Punkt bei 73,8 bar und 31°C liegt, ermöglicht die Nutzung von Wärmequellen mit Temperaturen, die erheblich unter denen liegen, die bisher wirtschaftlich nutzbar waren. Des Weiteren ist Kohlendioxid sehr preisgünstig. Sein Entzug aus der Atmosphäre wird sogar belohnt. Falls Kohlendioxid infolge von Undichtigkeiten des mit Überdruck arbeitenden Rankine-Kreisprozesses entweicht, ist dies mit keiner Gefahr für die Umwelt verbunden.The carbon dioxide used according to the invention as a working fluid, whose critical point is 73.8 bar and 31 ° C, allows the use of heat sources with temperatures significantly below those that were previously economically usable. Furthermore, carbon dioxide is very inexpensive. His withdrawal from the atmosphere is even rewarded. If carbon dioxide escapes due to leaks in the Rankine cycle using positive pressure, there is no danger to the environment.
Die Unteransprüche sind auf vorteilhafte Ausführungsformen und Weiterbildungen der erfindungsgemäßen Vorrichtung gerichtet.The subclaims are directed to advantageous embodiments and developments of the device according to the invention.
Die Erfindung wird im Folgenden anhand schematischer Zeichnungen beispielsweise und mit weiteren Einzelheiten erläutert.The invention is explained below with reference to schematic drawings, for example, and with further details.
In den Figuren stellen dar:In the figures represent:
Gemäß
Im Wärmetauscher
Nach dem Wärmetauscher
Nach Verlassen der Arbeitsmaschine
Der Kondensator
Der Kondensator
In dem beschriebenen System wird beispielsweise mit folgenden Temperatur- und Druckbereichen gearbeitet:
Flüssiges Kohlendioxid strömungsabwärts der Pumpe
Verdampftes Kohlendioxid strömungsabwärts des Verdampfers
Liquid carbon dioxide downstream of the pump
Evaporated carbon dioxide downstream of the evaporator
Die Fördermenge der Pumpe
Der Wärmetauscher
Zusammenfassend wird erfindungsgemäß das Arbeitsmedium Kohlendioxid in einem geschlossenen Rankine-Kreislauf mit einem Grunddruckniveau von beispielsweise 25 bis 30 bar verwendet. Die Höhe des Grunddruckniveaus richtet sich insbesondere nach der in dem Kondensator
Die Erwärmung und anschließende Verdampfung des Arbeitsmittels Kohlendioxid erfolgt mehrstufig, wobei zum Vorwärmen natürliche Energiequellen mit einer Temperatur nahe der Umgebungstemperatur verwendet werden können. Je nach verwendeter Verdampfungstemperatur kann ein mehrstufiges Vorwärmen unter Verschaltung mehrerer Wärmetauscher erfolgen. Für den Verdampfer
Die Verwendung einer Kolbendampfmaschine bei der Expansion des gasförmigen Kohlendioxids ermöglicht eine Kondensation deutlich weiter in den Nassdampfbereich hinein als bei einer Strömungsmaschine. Das Kohlendioxid wird in der Kolbenmaschine beispielsweise bis auf das Grunddruckniveau von 25 bis 30 bar expandiert. Die angegebenen Druck- und Temperaturbereiche sind nur beispielhaft und nicht einschränkend.The use of a piston steam engine in the expansion of the gaseous carbon dioxide allows condensation much further into the wet steam region than in a turbomachine. The carbon dioxide is expanded in the piston engine, for example, to the base pressure level of 25 to 30 bar. The specified pressure and temperature ranges are exemplary only and not limiting.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
- 1010
- KreisleitungKreisleitung
- 1212
- Wärmetauscherheat exchangers
- 1414
- VerdampferEvaporator
- 1616
- Arbeitsmaschineworking machine
- 1818
- Rekuperatorrecuperator
- 2020
- Kondensatorcapacitor
- 2222
- Pumpepump
- 2424
- Vorerwärmungsleitungpreheating line
- 2626
- WärmeträgerleitungHeat transfer line
- 2828
- Kühlflächecooling surface
- 3030
- Kühlleitungcooling line
- 3232
- KühlmittelpumpeCoolant pump
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102006028046 A1 [0002] DE 102006028046 A1 [0002]
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210009459 DE102012009459A1 (en) | 2012-05-11 | 2012-05-11 | Apparatus for converting thermal energy into mechanical energy by Rankine cycle process, comprises circulating line for guiding working fluid, evaporator, working machine and capacitor, where working fluid is carbon dioxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210009459 DE102012009459A1 (en) | 2012-05-11 | 2012-05-11 | Apparatus for converting thermal energy into mechanical energy by Rankine cycle process, comprises circulating line for guiding working fluid, evaporator, working machine and capacitor, where working fluid is carbon dioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102012009459A1 true DE102012009459A1 (en) | 2013-11-14 |
Family
ID=49475306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE201210009459 Withdrawn DE102012009459A1 (en) | 2012-05-11 | 2012-05-11 | Apparatus for converting thermal energy into mechanical energy by Rankine cycle process, comprises circulating line for guiding working fluid, evaporator, working machine and capacitor, where working fluid is carbon dioxide |
Country Status (1)
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DE (1) | DE102012009459A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021013465A1 (en) * | 2019-07-19 | 2021-01-28 | Siemens Energy Global GmbH & Co. KG | System for converting thermal energy into mechanical work |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006028046A1 (en) | 2006-06-19 | 2007-12-20 | Audi Ag | Combined display and control device for motor vehicle, has screen for displaying and selecting functions, and detecting device detecting control unit, where screen is switchable from information mode into control mode by control unit |
DE102006028746A1 (en) * | 2006-06-20 | 2007-12-27 | Gesellschaft für Motoren und Kraftanlagen mbH | Device for converting thermal energy into mechanical energy, comprises evaporator, turbine, recuperator and condenser, where organic working fluid is tetramethylsilane and has specific pressure and temperature |
DE102006035272B4 (en) * | 2006-07-31 | 2008-04-10 | Technikum Corporation, EVH GmbH | Method and device for using low-temperature heat for power generation |
US20090107144A1 (en) * | 2006-05-15 | 2009-04-30 | Newcastle Innovation Limited | Method and system for generating power from a heat source |
WO2011103560A2 (en) * | 2010-02-22 | 2011-08-25 | University Of South Florida | Method and system for generating power from low- and mid- temperature heat sources |
-
2012
- 2012-05-11 DE DE201210009459 patent/DE102012009459A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090107144A1 (en) * | 2006-05-15 | 2009-04-30 | Newcastle Innovation Limited | Method and system for generating power from a heat source |
DE102006028046A1 (en) | 2006-06-19 | 2007-12-20 | Audi Ag | Combined display and control device for motor vehicle, has screen for displaying and selecting functions, and detecting device detecting control unit, where screen is switchable from information mode into control mode by control unit |
DE102006028746A1 (en) * | 2006-06-20 | 2007-12-27 | Gesellschaft für Motoren und Kraftanlagen mbH | Device for converting thermal energy into mechanical energy, comprises evaporator, turbine, recuperator and condenser, where organic working fluid is tetramethylsilane and has specific pressure and temperature |
DE102006035272B4 (en) * | 2006-07-31 | 2008-04-10 | Technikum Corporation, EVH GmbH | Method and device for using low-temperature heat for power generation |
WO2011103560A2 (en) * | 2010-02-22 | 2011-08-25 | University Of South Florida | Method and system for generating power from low- and mid- temperature heat sources |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021013465A1 (en) * | 2019-07-19 | 2021-01-28 | Siemens Energy Global GmbH & Co. KG | System for converting thermal energy into mechanical work |
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