DE3123474C2 - - Google Patents
Info
- Publication number
- DE3123474C2 DE3123474C2 DE3123474A DE3123474A DE3123474C2 DE 3123474 C2 DE3123474 C2 DE 3123474C2 DE 3123474 A DE3123474 A DE 3123474A DE 3123474 A DE3123474 A DE 3123474A DE 3123474 C2 DE3123474 C2 DE 3123474C2
- Authority
- DE
- Germany
- Prior art keywords
- steam
- waste heat
- pressure circuit
- low
- temperature level
- 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.)
- Expired - Fee Related
Links
Classifications
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- 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
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- 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
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- 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
Description
Die Erfindung betrifft eine Anlage zur Nutzung von auf einem niedrigeren und auf einem höheren Temperaturniveau anfallender Abwärme von Brennkraftmaschinen mit den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen.The invention relates to a system for use on a lower and at a higher temperature level Waste heat from internal combustion engines with the in the preamble of Claim 1 specified features.
Bei den Anlagen dieser Gattung, die durch die DE-PS 5 26 134 bekannt geworden sind, erfolgt das Verdichten und Einspeisen des Dampfs aus dem Niederdruck-Kreislauf mittels eines mechanisch betriebenen Dampfverdichters, der saugseitig in den Niederdruck-Kreislauf und druckseitig in den Hochdruck-Kreislauf eingeschaltet ist.In the plants of this type, known from DE-PS 5 26 134 the steam is compressed and fed in from the low pressure circuit by means of a mechanically operated one Steam compressor, the suction side in the low pressure circuit and is switched on the pressure side in the high pressure circuit.
In dem mechanischen Dampfverdichter, der naturgemäß schwierig nach außen wärmeisolierbar ist, treten Wärmeverluste durch Wärme leitung und -strahlung ein, die zumindest teilweise eine Wieder kondensation des durch die Entspannung entstandenen Dampfs be wirken, so daß bei Eintritt in den Hochdruck-Kreislauf ein Dampf- Flüssigkeitsgemisch vorliegt, das für die nachfolgende Wärmenutzung, bei der häufig trockener Dampf benötigt wird, unerwünscht ist. Ein weiterer Mangel besteht darin, daß die beiden verschiedenen temperierten Dämpfe bei ihrer Vereinigung keiner intensiven Ver mischung unterliegen und demgemäß auch kein ausreichender Tempe raturausgleich zwischen Niederdruck-Dampf und Hochdruck-Dampf stattfindet, was ebenfalls die Wärmenutzung beeinträchtigen kann.In the mechanical steam compressor, which is naturally difficult heat-insulated from the outside, heat losses occur due to heat conduction and radiation, which is at least partially a re condensation of the steam created by the expansion act so that when entering the high pressure circuit a steam Liquid mixture is present, which is used for the subsequent use of heat, which often requires dry steam is undesirable. Another shortcoming is that the two are different tempered vapors when combined, no intensive ver subject to mixture and therefore not sufficient temp temperature compensation between low pressure steam and high pressure steam takes place, which can also affect heat use.
Der Erfindung liegt die Aufgabe zugrunde, die vorgenannten Mängel der bekannten Anlage zu überwinden und demgemäß eine Anlage anzu geben, bei der Wärmeverluste an die Umgebung besser beherrschbar sind und eine intensive Vermischung der beiden Dampfströme statt findet.The invention has for its object the aforementioned shortcomings to overcome the known system and accordingly to start a system give, where heat loss to the environment is more manageable and an intensive mixing of the two steam flows takes place finds.
Diese Aufgabe wird durch die im Kennzeichenteil des Anspruchs 1 ange gebenen Maßnahmen gelöst. This object is indicated in the characterizing part of claim 1 given measures resolved.
Hierbei ist es durch den Einsatz von Strahlpumpen einerseits ermöglicht, eine wirksame Wärmeisolierung mit einfachen Mitteln vorzunehmen und andererseits eine innige Vermischung der beiden Dampfströme zu erzielen.Here it is through the use of jet pumps on the one hand enables effective thermal insulation with simple means and on the other hand an intimate mixture of the two To achieve steam flows.
Durch die DE-OS 28 52 076 ist ferner eine Anlage zur Nutzung von auf verschieden hohem Temperaturniveau anfallender Abwärme von Brennkraftmaschinen bekanntgeworden, die jedoch in mehr facher Beziehung von dem Gegenstand der Erfindung abweicht.DE-OS 28 52 076 is also a system for use of waste heat generated at different levels of temperature of internal combustion engines, which are known in more fold relationship deviates from the object of the invention.
Zunächst wird dort die Abwärme nicht zur Nutzung in einem Wärmeverbraucher, sondern zur Erzeugung mechanischer Energie eingesetzt. Dementsprechend werden dort auch keine Strahlpumpen wie beim Gegenstand der Erfindung verwendet, sondern Expansionseinrichtungen, in denen die Wärmeenergie des Dampfes in mechanische Energie umgewandelt wird.First, the waste heat is not used in one Heat consumers, but to generate mechanical energy used. Accordingly, there are no jet pumps either as used in the subject of the invention, but Expansion facilities in which the thermal energy of the steam is converted into mechanical energy.
Ein weiterer Unterschied besteht darin, daß in den einzelnen Kühlwasser-Kreisläufen weder ein Entspannen noch ein Verdichten von Dampf stattfindet und daß die verschiedenen Kühlwasser- Kreisläufe bezüglich der Entspannungseinrichtungen nicht in Serie, sondern in Reihe geschaltet sind.Another difference is that in the individual Cooling water circuits neither relax nor compress of steam takes place and that the various cooling water Circuits related to the relaxation facilities not in Series, but are connected in series.
Nachstehend wird die Erfindung am Beispiel der Ausnutzung der Abwärme eines Dieselmotors in einer dreistufigen Anlage zur Erzeugung von Dampf mit einem Druck von 3 bar anhand des bei gefügten Schaltschemas erläutert: Die Verwendbarkeit dieser Anlage ist jedoch nicht auf die Aus nutzung von Dieselmotoren beschränkt.The invention is illustrated below using the example of the Waste heat from a diesel engine in a three-stage system Generation of steam at a pressure of 3 bar using the added circuit diagrams explained: The usability of this system is not on the off limited use of diesel engines.
Außerdem sind auch Ausführungen mit anderen Stufenzahlen denkbar.In addition, versions with other number of stages are also conceivable.
Gemäß dem genannten Schaltschema werden die Niedertemperatur- Abwärmen eines im Schema nicht dargestellten Dieselmotors aus Zylinderkühlwasser, Ladeluft und Schmieröl von einem Niederdruck- Kreislauf über die Wärmetauscher 1, 2, 3 aufgenommen.According to the circuit diagram mentioned, the low-temperature waste heat of a diesel engine, not shown in the diagram, of cylinder cooling water, charge air and lubricating oil is absorbed by a low-pressure circuit via the heat exchangers 1 , 2 , 3 .
Das erhitzteWasser wird anschließend über die Entspanner 4, 5, 6 stufenweise entspannt. The heated water is then gradually released via the depressurizers 4 , 5 , 6 .
Das restliche Wasser wird mittels einer Pumpe 16 zum Kondensat- Behälter 12 und von dort über eine Pumpe 14 wieder in den Kreislauf gefördert.The remaining water is conveyed by means of a pump 16 to the condensate container 12 and from there via a pump 14 back into the circuit.
Der in den Entspannern 4, 5, 6 gebildete Dampf wird von Strahl pumpen 7, 8, 9 angesaugt.The steam formed in the relaxers 4 , 5 , 6 is sucked in by jet pumps 7 , 8 , 9 .
Die Strahlpumpen 7, 8, 9 erhalten ihren Treibdampf aus der Höhertemperatur-Abwärme eines Abgaskessels 11 des Dieselmotors. Auf der Austrittseite der Strahlpumpe 9 fällt 3-bar-Dampf an, der neben der Abwärme des Abgaskessels 11 auch die wesentlichen Abwärmen aus dem Niederdruck-Kreislauf enthält.The jet pumps 7 , 8 , 9 receive their motive steam from the higher temperature waste heat of an exhaust gas boiler 11 of the diesel engine. On the outlet side of the jet pump 9 , 3 bar steam is produced which, in addition to the waste heat from the exhaust gas boiler 11, also contains the essential waste heat from the low-pressure circuit.
Dieser Dampf wird dem Wärmeverbraucher 10 einer Fabrik zugeführt. Das dort anfallende Kondensat wird mittels einer Pumpe 13 eben falls dem Kondensatbehälter 12 zugeführt. Von dort erfolgt über eine Pumpe 15 die Speisung des Abgaskessels 11.This steam is supplied to the heat consumer 10 of a factory. The condensate obtained there is also fed to the condensate container 12 by means of a pump 13 . From there, the exhaust gas boiler 11 is fed via a pump 15 .
Falls das Kondensat des Wärmeverbrauchers 10 höhere Temperaturen aufweist, ist eine Einspeisung direkt in den Entspanner 4 oder 5 zweckvoll.If the condensate of the heat consumer 10 has higher temperatures, it is expedient to feed it directly into the expansion device 4 or 5 .
Die Deckung der Kreislaufverluste erfolgt mit Zusatzwasser über eine Pumpe 17.The circulation losses are covered with make-up water via a pump 17 .
Die genannten Dampfdrücke und Anwendungen sind nur beispielhaft zu verstehen. Die Anlage ist nach den Erfordernissen des Einzel falles jeweils optimierbar.The vapor pressures and applications mentioned are only examples to understand. The facility is according to the needs of the individual can be optimized in each case.
Claims (3)
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 DE3123474A1 (en) | 1982-12-30 |
DE3123474C2 true DE3123474C2 (en) | 1991-09-05 |
Family
ID=6134620
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)
Country | Link |
---|---|
DE (1) | DE3123474A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0828059A1 (en) | 1996-09-05 | 1998-03-11 | Lothar Bauer | Plant for combined production of mechanical energy and steam using liquid cooled combustion engines |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Family Cites Families (2)
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 |
-
1981
- 1981-06-13 DE DE19813123474 patent/DE3123474A1/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0828059A1 (en) | 1996-09-05 | 1998-03-11 | Lothar Bauer | Plant for combined production of mechanical energy and steam using liquid cooled combustion engines |
Also Published As
Publication number | Publication date |
---|---|
DE3123474A1 (en) | 1982-12-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |