EP2655813B1 - Installation à récupération de chaleur perdue - Google Patents

Installation à récupération de chaleur perdue Download PDF

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Publication number
EP2655813B1
EP2655813B1 EP11802103.9A EP11802103A EP2655813B1 EP 2655813 B1 EP2655813 B1 EP 2655813B1 EP 11802103 A EP11802103 A EP 11802103A EP 2655813 B1 EP2655813 B1 EP 2655813B1
Authority
EP
European Patent Office
Prior art keywords
waste heat
expansion machine
refrigerant
generator
orc
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.)
Not-in-force
Application number
EP11802103.9A
Other languages
German (de)
English (en)
Other versions
EP2655813A2 (fr
Inventor
Stefan Müller
Konrad Herrmann
Anayet Temelci-Andon
Harald Köhler
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2655813A2 publication Critical patent/EP2655813A2/fr
Application granted granted Critical
Publication of EP2655813B1 publication Critical patent/EP2655813B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • the invention relates to a waste heat recovery system according to the preamble of claim 1.
  • ORC Organic Rankine Cycle
  • ORC plants for example, in the utilization of biomass in connection with combined heat and power, especially at relatively low power, so if the conventional biomass combustion technology seems relatively expensive.
  • Biomass plants often have a fermenter for biogas production, which usually has to be heated.
  • Combined heat and power plants as plants for combined heat and power are well known. These are decentralized, usually powered by internal combustion engines power generation systems with simultaneous waste heat recovery. The discharged during the combustion of the cooling media heat is used as completely as possible for the heating of suitable objects.
  • the engine manufacturers prescribe a cooling water inlet temperature of only approx. 40 to 50 ° C for the mixture cooling so that the mixture can be sufficiently cooled. Since this temperature level is relatively low, the heat extracted from the fuel gas mixture in the previously known combined heat and power plants is released to the environment, for example with a table cooler.
  • a second heating circuit draws heat from engine cooling water and exhaust gas of the internal combustion engine and is connected to the second heat exchanger after the feed pump, wherein the heat from the cooling circuit and the exhaust gas for overheating and evaporation of the process medium in ORC and coupled as high-temperature heat in the second heat exchanger after the feed pump becomes.
  • the waste heat recovery system consists inter alia of an expansion machine for steam expansion in ORC, which has a magnetic bearing with an associated control device and a power supply via a DC intermediate circuit of a generator-frequency converter.
  • the waste heat recovery system is characterized by a unit of expander, generator and frequency converter cooled with the refrigerant from the ORC circuit.
  • cool, liquid refrigerant is removed after the feed pump and supplied for cooling the unit from the expansion machine, generator and frequency converter.
  • the cool, liquid refrigerant is removed after the feed pump and fed directly to the expansion machine for storage cooling.
  • heated refrigerant exiting from the unit of expansion machine, generator and frequency converter and / or the storage area of the expansion machine is supplied to the condenser on the inlet side.
  • the refrigerant used for cooling of about 15 ° C to 50 ° C on the inlet side and about 30 ° C to 80 ° C on the outlet side, the respective temperatures of the current operating condition to be cooled components and / or assemblies and the entire waste heat recovery system.
  • a temperature monitoring device linked to a superordinate control device is provided with temperature measuring points in the components and / or assemblies to be cooled. This compares actual temperature measured values with predefinable setpoint values, evaluates them and / or regulates accordingly optimized refrigerant flow rate.
  • separate control loops with separate cooling channels or corresponding lines are preferably provided for the components to be cooled and / or assemblies. These individual, each to be cooled components and / or assemblies associated control circuits, valves, preferably solenoid valves, to control the refrigerant flow rate to optimally meet the respective local temperature situation.
  • Waste heat sources can be, for example, combined heat and power plants, industrial plants or boiler plants.
  • the waste heat recovery system in particular the unit of expansion machine, generator and frequency converter, is cooled optimally and situation appropriate with the inventive measures. On the one hand, this is a prerequisite for safe, robust plant operation, but on the other hand also for effective and gentle operation of the individual components, all of which have special requirements with regard to cooling. This not only applies to the stationary operation of the waste heat recovery system, but also the modulating of the system according to it waste heat attack and the startup and shutdown. In particular, these states pose a challenge to the refrigeration system and, in accordance with the invention, provide safe control.
  • the drawing illustrates an embodiment of the invention and shows in a single figure the schematic structure of a waste heat recovery system, consisting of one of these downstream ORC.
  • ORC circuit 1 The essential components for the ORC are an ORC circuit 1, a feed pump 2, an evaporator 3, a steam expansion expansion machine 4, which is coupled to a generator 5, a condenser 6 for re-cooling via a heat sink 7, and the heat exchangers 9, 10 for preheating the working medium in ORC circuit 1.
  • the two heat exchangers 8, 9 are connected downstream of the feed pump 2 in series.
  • the first heat exchanger 8 after the feed pump 2 serves as a first stage for coupling low-temperature heat and the subsequent heat exchanger 9 as a second stage for coupling high-temperature heat from a waste heat source 10th
  • a second heating circuit 11 is connected with its flow area with the evaporator 3 of the ORC, because the temperature level is initially sufficiently high for its direct heating. Thereafter, the second heating circuit 11 opens the return side in the second heat exchanger 9 and there are still residual heat from the ORC.
  • a liquid refrigerant partial stream 12 for cooling the expansion machine 4 is branched off and initially passed through the generator 5. Thereafter, the cooling medium flows through the housing of the expansion machine 4, there in the starting phase for preheating initially for heat and ensures there in normal operation for sufficient heat dissipation.
  • Drawn to this is only a simplified, schematic wiring without the necessary branches to individual components or assemblies, subcircuits, temperature measuring points, valves and control devices.
  • a steam valve 13 is opened at the inlet of the steam expansion expansion machine 4 in the ORC and during the rest Opening the steam valve 13 is carried out a further ramping up the speed, so that the generator 5 passes from the engine operation in the normal generator operation.
  • a controlled bypass 14 with at least one throttle valve 15 is provided around the expansion machine 4.
  • This bypass 14 is initially open in the starting phase, ie at a still relatively low temperature of the working medium.
  • the working medium is passed around the expansion machine 4 around.
  • the throttle valve 15 in the bypass 14 is closed and the steam engine 13 connected upstream of the expansion engine 4 is opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Motor Or Generator Cooling System (AREA)

Claims (3)

  1. Installation de récupération de chaleur perdue pour une source de chaleur perdue (10), comprenant un cycle de Rankine à Caloporteur Organique (ORC) montée en aval de cette dernière, dans laquelle la source de chaleur perdue (10) est reliée au dispositif de chauffage du dispositif à ORC, ainsi qu'à une machine à expansion (4) qui est couplée à un générateur (5) et est destinée à l'expansion de vapeur dans le dispositif à ORC, laquelle machine à expansion présente un palier magnétique doté d'un dispositif de régulation associé et d'une alimentation électrique par l'intermédiaire d'un circuit intermédiaire à courant continu d'un convertisseur de fréquence d'un générateur,
    dans laquelle une unité constituée de la machine à expansion (4), du générateur (5) et du convertisseur de fréquence est refroidie par l'agent caloporteur provenant du circuit ORC, dans lequel un agent caloporteur fluide froid est prélevé en aval de la pompe d'alimentation (2) et est acheminé pour le refroidissement de l'unité constituée de la machine à expansion (4), du générateur (5) et du convertisseur de fréquence,
    caractérisée en ce que l'agent caloporteur fluide froid est prélevé en aval de la pompe d'alimentation (2) et est acheminé à la machine à expansion (4) pour le refroidissement des paliers et dans lequel du fluide caloporteur sortant de l'unité constituée de la machine à expansion (4), du générateur (5) et du convertisseur de fréquence et/ou de la zone de palier de la machine à expansion (4) est acheminé côté entrée vers le condenseur (6), et dans lequel il est prévu un dispositif de surveillance de température combiné à un dispositif de régulation d'ordre supérieur comportant des points de mesure de température dans les composants et/ou les modules à refroidir, lequel dispositif de surveillance de température compare des valeurs de mesure de température actuelles à des valeurs théoriques pouvant être prédéterminées, les évalue et/ou régule le débit d'agent caloporteur.
  2. Installation de récupération de chaleur perdue selon la revendication 1,
    caractérisée en ce qu'il est prévu des circuits de régulation séparés pour des composants et/ou des groupes de composants à refroidir afin de réguler le débit d'agent caloporteur.
  3. Installation de récupération de chaleur perdue selon la revendication 2,
    caractérisée en ce qu'il est prévu des soupapes destinées à commander le débit d'agent caloporteur dans des circuits régulateurs respectivement associés aux composants et/ou aux groupes de composants à refroidir.
EP11802103.9A 2010-12-24 2011-12-23 Installation à récupération de chaleur perdue Not-in-force EP2655813B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010056299A DE102010056299A1 (de) 2010-12-24 2010-12-24 Abwärmenutzungsanlage
PCT/EP2011/073920 WO2012085264A2 (fr) 2010-12-24 2011-12-23 Installation à récupération de chaleur perdue

Publications (2)

Publication Number Publication Date
EP2655813A2 EP2655813A2 (fr) 2013-10-30
EP2655813B1 true EP2655813B1 (fr) 2017-04-19

Family

ID=45418691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11802103.9A Not-in-force EP2655813B1 (fr) 2010-12-24 2011-12-23 Installation à récupération de chaleur perdue

Country Status (6)

Country Link
US (1) US20140013749A1 (fr)
EP (1) EP2655813B1 (fr)
CN (1) CN103620167A (fr)
DE (1) DE102010056299A1 (fr)
RU (1) RU2013134398A (fr)
WO (1) WO2012085264A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014202487A1 (de) * 2014-02-12 2015-08-13 Robert Bosch Gmbh Steuergerät, Wärmekopplungskreislauf sowie Verfahren zum Betrieb solch eines Wärmekopplungskreislaufs
DE202017107002U1 (de) * 2017-11-18 2019-02-19 Bdr Thermea Group B.V. Blockheizkraftwerk
CN109401954A (zh) * 2018-12-07 2019-03-01 黑龙江省能源环境研究院 沼气发酵反应器外部增温换热系统及工作方法
CN109337798A (zh) * 2018-12-07 2019-02-15 黑龙江省能源环境研究院 沼液余热回收利用系统及工作方法
US11015846B2 (en) 2018-12-20 2021-05-25 AG Equipment Company Heat of compression energy recovery system using a high speed generator converter system
CN110173313A (zh) * 2019-05-28 2019-08-27 上海慕帆动力科技有限公司 应用于发动机余热回收的高参数orc透平发电设备及orc装置

Citations (2)

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JP2005264863A (ja) * 2004-03-19 2005-09-29 Ebara Corp 発電装置
WO2007088194A2 (fr) * 2006-02-02 2007-08-09 Frank Eckert Turbogénérateur à cycle de rankine à caloporteur organique (orc)

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FR2449780A1 (fr) 1979-02-22 1980-09-19 Semt Procede et dispositif de recuperation d'energie thermique dans un moteur a combustion interne suralimente
US4901531A (en) 1988-01-29 1990-02-20 Cummins Engine Company, Inc. Rankine-diesel integrated system
DE59205446D1 (de) * 1991-07-17 1996-04-04 Siemens Ag Verfahren zum Betreiben einer Gas- und Dampfturbinenanlage und Anlage zur Durchführung des Verfahrens
NZ248729A (en) * 1992-10-02 1996-03-26 Ormat Ind Ltd High pressure geothermal power plant with secondary low pressure turbogenerator
DE19541521A1 (de) 1995-11-08 1997-07-31 Schmeink & Cofreth En Manageme Steigerung des elektrischen Wirkungsgrades bei der Verstromung von Sondergasen
PT1668226E (pt) * 2003-08-27 2008-04-18 Ttl Dynamics Ltd Sistema de recuperação de energia
DE102005048795B3 (de) 2005-10-12 2006-12-28 Köhler & Ziegler Anlagentechnik GmbH Kraft-Wärme-Kopplungsanlage
US8839622B2 (en) * 2007-04-16 2014-09-23 General Electric Company Fluid flow in a fluid expansion system
US7841306B2 (en) * 2007-04-16 2010-11-30 Calnetix Power Solutions, Inc. Recovering heat energy
US7638892B2 (en) * 2007-04-16 2009-12-29 Calnetix, Inc. Generating energy from fluid expansion
DE202007016668U1 (de) * 2007-12-04 2008-02-28 GMK-Gesellschaft für Motoren und Kraftanlagen mbH Anlage zur Stromerzeugung nach dem ORC-Prinzip
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JP2005264863A (ja) * 2004-03-19 2005-09-29 Ebara Corp 発電装置
WO2007088194A2 (fr) * 2006-02-02 2007-08-09 Frank Eckert Turbogénérateur à cycle de rankine à caloporteur organique (orc)

Also Published As

Publication number Publication date
RU2013134398A (ru) 2015-01-27
WO2012085264A3 (fr) 2013-12-19
WO2012085264A2 (fr) 2012-06-28
US20140013749A1 (en) 2014-01-16
EP2655813A2 (fr) 2013-10-30
CN103620167A (zh) 2014-03-05
DE102010056299A1 (de) 2012-06-28

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