DE3123474A1 - Method and device for utilising waste heat which occurs at different temperatures - Google Patents

Method and device for utilising waste heat which occurs at different temperatures

Info

Publication number
DE3123474A1
DE3123474A1 DE19813123474 DE3123474A DE3123474A1 DE 3123474 A1 DE3123474 A1 DE 3123474A1 DE 19813123474 DE19813123474 DE 19813123474 DE 3123474 A DE3123474 A DE 3123474A DE 3123474 A1 DE3123474 A1 DE 3123474A1
Authority
DE
Germany
Prior art keywords
waste heat
steam
occurs
cooling water
different temperatures
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.)
Granted
Application number
DE19813123474
Other languages
German (de)
Other versions
DE3123474C2 (en
Inventor
Günter Dipl.Ing. 2104 Hamburg Taubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blohm and Voss GmbH
Original Assignee
Blohm and Voss GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Blohm and Voss GmbH filed Critical Blohm and Voss GmbH
Priority to DE19813123474 priority Critical patent/DE3123474A1/en
Publication of DE3123474A1 publication Critical patent/DE3123474A1/en
Application granted granted Critical
Publication of DE3123474C2 publication Critical patent/DE3123474C2/de
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
    • F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
    • F22B3/045—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators the drop in pressure being achieved by compressors, e.g. with steam jet pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

In a method for utilising waste heat which occurs at different temperatures and is partially absorbed by one or more cooling-water circuits, the cooling water is expanded and the vapour arising in the process is compressed to an increased pressure via ejectors by means of driving vapour which has been generated with waste heat with a higher temperature. <IMAGE>

Description

A b w ä r m e n u t z u n gA w arm e u s u tio n

Verfahren und Vorrichtung zur Nutzung von Abwärmen, die auf unterschiedlichem Temperaturniveau anfallen.Method and device for the use of waste heat, which is based on different Incur temperature level.

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Nutzung von Abwärmen, die auf unterschiedlichem Temperaturniveau anfallen und teilweise von einem oder mehreren Kühlwasser,reisläufen aufgenommen werden.The invention relates to a method and a device for use of waste heat that occurs at different temperature levels and partially be absorbed by one or more cooling water, rice courses.

Zahlreiche Betreiber benötigen Dampf im unteren und mittleren Druckbereich.Numerous operators require steam in the lower and medium pressure range.

Meist ist gleichzeitig Ab wärme auf niedrigerem Niveau verfügbar, die hierfür gar nicht oder nur mit verhältnismäßig großem Aufwand, z.B. mit Wärmepumpen, genutzt werden könnte. Dabei sind oft erhebliche Investitionen und- auch hohe laufende Betriebskosten (zusätzlicher Strombedarf) zu erwarten.In most cases, waste heat is available at a lower level at the same time, which do not do this at all or only with relatively great effort, e.g. with heat pumps, could be used. There are often considerable investments and high ongoing investments Operating costs (additional electricity demand) to be expected.

Der Erfindung liegt die Aufgabe zugrunde, unter bestinmten Voraussetzungen dieses Problem einfach und mit nur sehr geringem Strombedarf zu lösen.The invention is based on the object under certain conditions to solve this problem easily and with very little power consumption.

Die Lösung ist den Ansprüchell zu entnehmen d wird nachstehend am Beispiel der Ausnutzung der Niedertemperaturabwärmen eines Dieselmotors für die Erzeugung von 3 bar-Dampf anhand des beiliegenden Schaltschemas stichwortartig erläutert.The solution is to be found in the claims Example of the exploitation of the Low-temperature waste heating of a diesel engine for the generation of 3 bar steam based on the enclosed circuit diagram explained.

Die Verwendbarkeit dieses Verfahrens ist jedoch nicht auf die Ausnutzung von Motorabwärmen beschränkt. Ausserdem sind auch Ausführungen mit anderen Stufenzahlen möglich.The usefulness of this method, however, is not due to its exploitation limited by engine waste heat. There are also versions with other numbers of steps possible.

Gemäss dem beiliegenden Schaltschema werden die Niedertemperaturabwärmen des Motors aus Zylinderkühlwasser, Ladeluft und Schmieröl von einem Kühlkreislauf über die Wärmetauscher 1 bis 3 aufgenommen. Das erhitzte Wasser wird anschliessend über die Entspanner 4 bis 6 stufenweise entspannt. Das restliche Wasser wird mittels Pumpe 16 zum Kondensat-Behälter 12 und von dort L'ber Pumpe 14 wieder in den Kreislauf gefördert. Der in den Entspannern 4 bis 6 gebildete Dampf wird von den Ejektoren 7 bis 9 angesaugt.According to the enclosed circuit diagram, the low-temperature waste heats of the engine from cylinder cooling water, charge air and lubricating oil from a cooling circuit added via the heat exchangers 1 to 3. The heated water is then Relaxed gradually via the relaxer 4 to 6. The remaining water is by means of Pump 16 to the condensate container 12 and from there via pump 14 back into the circuit promoted. The steam formed in the expanders 4 to 6 is released from the ejectors 7 to 9 sucked in.

Dic Ejektoren erhalten ihren Treibdampf aus dem Abgaskessel 11 des im Schema nicht dargestellten Dieselir.otors.The ejectors receive their motive steam from the exhaust gas boiler 11 of the Dieselir.otors not shown in the scheme.

Auf der Austrittsseite des Ejektors'9 fällt 3 bar-Dampf an, der neben der Wärme des Abgaskessels auch die wesentlichen N iedertemperatur-Abwärmon enthält.On the outlet side of the ejector'9 3 bar steam falls, the next the heat of the exhaust gas boiler also contains the essential low-temperature waste heat.

Dieser Dampf wird dem Wärmeverbraucher 10 der Fabrik zugeführt. Das dort anfallende Kondensat wird mittels Pumpe 13 ebenfalls dem Kondensatbehälter 12 zugeführt.This steam is fed to the heat consumer 10 of the factory. That Any condensate produced there is also transferred to the condensate container by means of pump 13 12 supplied.

Von dort e-folgt ber eine Pumpe 15 die Speisung des Abgaskessels 11.From there, the exhaust gas boiler 11 is fed via a pump 15.

Falls das Kondensat der Wärmeverbraucher 10 höhere Temperaturen aufweist, ist eine Einspeisung direkt;in den Entspanner 4 oder 5 sinnvoll.If the condensate of the heat consumer 10 has higher temperatures, is a direct feed; in the expander 4 or 5 makes sense.

Die Deckung der Kreislaufverluste erfolgt mit Zusatzwasser über Pumpe 17 Die genannten Dampfdrücke und Anwendungen sind nur beispielhaft zu verstehen. Die Anlage ist nach den Erfordernissen des Einzelfalles jeweils zu optimieren.The circuit losses are covered with make-up water via a pump 17 The steam pressures and applications mentioned are only to be understood as examples. The system must be optimized according to the requirements of the individual case.

Claims (3)

P a t e n t a n s p r ü c h e 1.) Verfahren und Vorrichtung zur Nutzung von Abwärmen, die auf unterschiedlichem Temperaturniveau anfallen und teilweise von einem oder mehreren Kühlwasserkreisläufen aufgenommen werden, dadurch gekennzeichnet, daß das Kühlwasser entspannt und der dabei entstehende Dampf über Ejektoren mittels Treibdampf, der mit Abwärme höherer Temperatur ei zeugt wurde, auf einen erhöhten Druck verdichtet wird. P a t e n t a n s p r ü c h e 1.) Method and device for use of waste heat that occurs at different temperature levels and partially are taken up by one or more cooling water circuits, characterized in that that the cooling water relaxes and the resulting steam by means of ejectors Motive steam, which was generated with waste heat at a higher temperature, to an increased Pressure is compressed. 2.) Verfahren und Vorrichtung nach AnsPruch i, dadurch gekennzeichnet, daß Entspannung und Verdichtung mehrstufig durchgeführt werden. 2.) Method and device according to claim i, characterized in that that relaxation and compression are carried out in several stages. 3.) Verfahren und Vorrichtung nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß die Abwärme aus Schmieröl, Ladeluft und Kühlwasser von Verbrennungskraftmaschinen zur Erzeugung des Entspannungsdampfes dienen und der Ejektortreibdampf mit der Wärme aus den Motorabgase gewonnen wird. 3.) Method and device according to claims 1 or 2, characterized characterized in that the waste heat from lubricating oil, charge air and cooling water from internal combustion engines serve to generate the expansion steam and the ejector propellant steam with the heat is obtained from the engine exhaust.
DE19813123474 1981-06-13 1981-06-13 Method and device for utilising waste heat which occurs at different temperatures Granted DE3123474A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813123474 DE3123474A1 (en) 1981-06-13 1981-06-13 Method and device for utilising waste heat which occurs at different temperatures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813123474 DE3123474A1 (en) 1981-06-13 1981-06-13 Method and device for utilising waste heat which occurs at different temperatures

Publications (2)

Publication Number Publication Date
DE3123474A1 true DE3123474A1 (en) 1982-12-30
DE3123474C2 DE3123474C2 (en) 1991-09-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813123474 Granted DE3123474A1 (en) 1981-06-13 1981-06-13 Method and device for utilising waste heat which occurs at different temperatures

Country Status (1)

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DE (1) DE3123474A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636057C1 (en) * 1996-09-05 1998-03-05 Lothar Bauer Plant for the combined generation of mechanical drive energy and steam by means of liquid-cooled internal combustion engines
WO2009107383A1 (en) * 2008-02-28 2009-09-03 Kanemitsu Toshinori Intermediate temperature heat engine
DE102011117057A1 (en) * 2011-10-27 2013-05-02 Daimler Ag Waste heat recovery device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE526134C (en) * 1928-11-27 1931-06-03 Humboldt Deutzmotoren Akt Ges Process for utilizing waste heat from internal combustion engines
DE2852076A1 (en) * 1977-12-05 1979-06-07 Fiat Spa PLANT FOR GENERATING MECHANICAL ENERGY FROM HEAT SOURCES OF DIFFERENT TEMPERATURE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE526134C (en) * 1928-11-27 1931-06-03 Humboldt Deutzmotoren Akt Ges Process for utilizing waste heat from internal combustion engines
DE2852076A1 (en) * 1977-12-05 1979-06-07 Fiat Spa PLANT FOR GENERATING MECHANICAL ENERGY FROM HEAT SOURCES OF DIFFERENT TEMPERATURE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636057C1 (en) * 1996-09-05 1998-03-05 Lothar Bauer Plant for the combined generation of mechanical drive energy and steam by means of liquid-cooled internal combustion engines
EP0828059A1 (en) * 1996-09-05 1998-03-11 Lothar Bauer Plant for combined production of mechanical energy and steam using liquid cooled combustion engines
WO2009107383A1 (en) * 2008-02-28 2009-09-03 Kanemitsu Toshinori Intermediate temperature heat engine
JP5261473B2 (en) * 2008-02-28 2013-08-14 俊典 金光 Medium temperature engine
DE102011117057A1 (en) * 2011-10-27 2013-05-02 Daimler Ag Waste heat recovery device
WO2013060447A1 (en) * 2011-10-27 2013-05-02 Daimler Ag Waste heat recovery device

Also Published As

Publication number Publication date
DE3123474C2 (en) 1991-09-05

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8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee