DE19956221A1 - Unit type power station, especially for flow-controlled operation, has reformer supplied with combustion gas and with condensate line that opens into heat exchanger which has exhaust gas line - Google Patents

Unit type power station, especially for flow-controlled operation, has reformer supplied with combustion gas and with condensate line that opens into heat exchanger which has exhaust gas line

Info

Publication number
DE19956221A1
DE19956221A1 DE19956221A DE19956221A DE19956221A1 DE 19956221 A1 DE19956221 A1 DE 19956221A1 DE 19956221 A DE19956221 A DE 19956221A DE 19956221 A DE19956221 A DE 19956221A DE 19956221 A1 DE19956221 A1 DE 19956221A1
Authority
DE
Germany
Prior art keywords
heat exchanger
line
reformer
opens
exhaust gas
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
DE19956221A
Other languages
German (de)
Other versions
DE19956221B4 (en
Inventor
Thomas Hocker
Original Assignee
Joh Vaillant GmbH and Co
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 Joh Vaillant GmbH and Co filed Critical Joh Vaillant GmbH and Co
Publication of DE19956221A1 publication Critical patent/DE19956221A1/en
Application granted granted Critical
Publication of DE19956221B4 publication Critical patent/DE19956221B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D18/00—Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2101/00—Electric generators of small-scale CHP systems
    • F24D2101/30—Fuel cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2103/00—Thermal aspects of small-scale CHP systems
    • F24D2103/10—Small-scale CHP systems characterised by their heat recovery units
    • F24D2103/13—Small-scale CHP systems characterised by their heat recovery units characterised by their heat exchangers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
    • H01M8/04022—Heating by combustion
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • 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

Abstract

The unit type power station has at least one fuel cell (2) with a reformer (1) connected before it that is supplied with combustion gas, whereby the fuel cell is thermally connected to a heat exchanger (4). A reformer condensate line (13) opens into the heat exchanger, which has an exhaust gas line (12). A fresh water line (14) may open into the heat exchanger.

Description

Die Erfindung bezieht sich auf ein Blockheizkraftwerk gemäß dem Oberbegriff des Anspru­ ches 1.The invention relates to a combined heat and power plant according to the preamble of claim ches 1.

Bei einem stromgeführten Betrieb eines solchen Blockheizkraftwerkes kann es, insbeson­ dere im Sommer, vorkommen, daß die bei der Stromproduktion anfallende Wärme nicht benötigt wird und abgeführt werden muß. Hierdurch kann es erforderlich werden, erhebliche Wärmemengen abführen zu müssen. Dies erfordert mit Luftkühlung einen sehr erheblichen Aufwand. So benötigt man z. B., um 2 kW thermisch mit einer Temperaturdifferenz von 20 K abzuführen, ca. 300 m3/h Kühlluft. Diese Luftmenge ist nur mit sehr großen Gebläsen und Abgasquerschnitten möglich. Aus diesem Grund ist es bei den herkömmlichen Blockheiz­ kraftwerken nicht immer möglich, diese stromgeführt zu betreiben, so daß diese modulierend betrieben werden oder abgeschaltet werden müssen und der Strom bedarf dann aus einem öffentlichen Netz gedeckt werden muß.In a current-operated operation of such a combined heat and power plant, it can happen, in particular in summer, that the heat generated during the electricity production is not required and must be dissipated. This can make it necessary to remove significant amounts of heat. With air cooling, this requires a very considerable effort. So you need z. B. to dissipate 2 kW thermally with a temperature difference of 20 K, about 300 m 3 / h of cooling air. This amount of air is only possible with very large fans and exhaust gas cross-sections. For this reason, it is not always possible in the conventional combined heat and power plants to operate them in a current-carrying manner, so that they must be operated in a modulating manner or have to be switched off and the electricity then has to be covered from a public network.

Ziel der Erfindung ist es, diese Nachteile zu vermeiden und ein Blockheizkraftwerk der ein­ gangs erwähnten Art vorzuschlagen, bei dem es möglich ist, auch größere Wärmemengen mit geringem Aufwand abführen zu können.The aim of the invention is to avoid these disadvantages and a combined heat and power plant propose the type mentioned above, in which it is possible to also larger amounts of heat to be able to transfer with little effort.

Erfindungsgemäß wird dies bei einem Blockheizkraftwerk der eingangs erwähnten Art durch die kennzeichnenden Merkmale des Anspruches 1 erreicht. According to the invention, this is achieved in a combined heat and power plant of the type mentioned at the outset the characterizing features of claim 1 achieved.  

Durch die vorgeschlagenen Maßnahmen wird erreicht, daß das abzuführende heiße Abgas durch die Verdunstung des Kondensats erheblich abgekühlt wird, wodurch die allenfalls not­ wendige weitere Abkühlung mit erheblich geringeren Kühlluftmengen erreicht werden kann.The proposed measures ensure that the hot exhaust gas to be removed is significantly cooled by the evaporation of the condensate, which means that if necessary agile further cooling can be achieved with significantly lower amounts of cooling air.

Durch die Merkmale des Anspruches 2 ergibt sich der Vorteil, daß die abzuführende Wärme praktisch vollständig durch Verdampfung von Wasser abgeführt werden kann, so daß prak­ tisch keine nennenswerte Kühlluftmengen erforderlich sind.The features of claim 2 have the advantage that the heat to be dissipated can be removed almost completely by evaporation of water, so that prak no significant amounts of cooling air are required.

Durch die Merkmale des Anspruches 3 ergibt sich der Vorteil, daß die für den Reformer er­ forderliche Wärmemenge im wesentlichen durch die von der Brennstoffzelle abzuführende Wärme gedeckt werden kann.The features of claim 3 have the advantage that he for the reformer required amount of heat essentially by the to be dissipated by the fuel cell Heat can be covered.

Die Erfindung wird nun anhand der Zeichnung näher erläutert. Dabei zeigen die Fig. 1 und Fig. 2 verschiedene Ausführungsformen erfindungsgemäßer Blockheizkraftwerke.The invention will now be explained in more detail with reference to the drawing. Here, FIGS. 1 and Fig. 2, various embodiments of inventive cogeneration.

Gleiche Bezugszeichen bedeuten in beiden Figuren gleiche Einzelteile.The same reference symbols in both figures mean the same individual parts.

Bei den Blockheizkraftwerken gemäß den Fig. 1 und 2 ist ein Reformer 1 vorgesehen, der über eine Brenngasleitung 5 mit einem kohlenwasserstoffhaltigen Brenngas versorgbar ist.In the combined heat and power according to FIGS. 1 and 2, a reformer 1 is provided which can be supplied with a hydrocarbon-containing fuel gas through a fuel gas pipe 5.

Der Reformer 1, in dem aus dem Brenngas und Luft Prozeßgas erzeugt wird, ist mit einer Prozeßgasleitung 6 mit einer Brennstoffzelle 2 verbunden.The reformer 1 , in which process gas is generated from the fuel gas and air, is connected to a process gas line 6 with a fuel cell 2 .

Die Brennstoffzelle 2 ist mit einer elektrischen Ausleitung 10 versehen. Weiter ist eine Ab­ gasleitung 7 vorgesehen, die in einen Nachbrenner 3 mündet. Dieser verbrennt die noch reaktionsfähigen Teile des Abgases der Brennstoffzelle 2.The fuel cell 2 is provided with an electrical discharge line 10 . From a gas line 7 is provided, which opens into an afterburner 3 . This burns the still reactive parts of the exhaust gas of the fuel cell 2 .

Eine weitere Abgasleitung 9 führt von einem Regelventil 15, das dem Nachbrenner 3 nach­ geschaltet ist, zu einem Wärmetauscher 4, in den eine Kondensatleitung 13 des Reformers 1 mündet. Dabei dient die Wärme der Abgase zum Verdampfen des Kondensats, wodurch den Abgasen eine sehr erhebliche Wärmemenge entzogen wird. Die abgekühlten Abgase strömen über eine Abgasleitung 11 aus dem Wärmetauscher 4 ab.Another exhaust pipe 9 leads from a control valve 15 , which is connected after the afterburner 3 , to a heat exchanger 4 , into which a condensate pipe 13 of the reformer 1 opens. The heat of the exhaust gases is used to evaporate the condensate, which removes a very significant amount of heat from the exhaust gases. The cooled exhaust gases flow out of the heat exchanger 4 via an exhaust pipe 11 .

Der Nachbrenner 3 ist über das Regelventil 15 weiter mit einer Abgasleitung 8 verbunden, die in den Reformer 1 mündet und diesen mit Wärme versorgt. Die entsprechend abgekühl­ ten Abgase strömen über eine Abgasleitung 12 des Reformers 1 ab.The afterburner 3 is further connected via the control valve 15 to an exhaust gas line 8 which opens into the reformer 1 and supplies it with heat. The correspondingly cooled exhaust gases flow from an exhaust pipe 12 of the reformer 1 .

Beim Betrieb wird im Reformer 1 Brenngas unter Zufuhr von Wärme aus den Abgasen des Nachbrenners 3 in Prozeßgas umgewandelt, das der Brennstoffzelle 2 zugeführt wird. In dieser wird elektrischer Strom erzeugt, der über die Ausleitung 10 abgeführt wird.During operation, fuel gas is converted in the reformer 1 by supplying heat from the exhaust gases of the afterburner 3 to process gas which is fed to the fuel cell 2 . In this electrical current is generated, which is discharged via the diversion 10 .

Das in der Brennstoffzelle 2 dabei anfallende heiße Abgas wird dabei dem Nachbrenner 3 zugeführt und in diesem ausgebrannt, wobei die dabei entstehende Wärme zum Teil dem Wärmetauscher 4 zugeführt wird, in dem das im Reformer 1 anfallende Kondensat zur Ab­ kühlung der Abgase der Brennstoffzelle 2 verdampft wird. Der andere Teil der im Nachbren­ ner 3 erzeugten Wärme wird dem Reformer 1 zugeführt und deckt dessen Wärmebedarf, wobei Wasser verdampft wird. Die abgekühlten Abgase strömen über die Abgasleitung 12 ab.The resulting hot exhaust gas in the fuel cell 2 is fed to the afterburner 3 and burned out in it, the resulting heat being supplied in part to the heat exchanger 4 in which the condensate obtained in the reformer 1 evaporates to cool the exhaust gases of the fuel cell 2 becomes. The other part of the heat generated in Nachbren ner 3 is fed to the reformer 1 and covers its heat requirements, with water being evaporated. The cooled exhaust gases flow out via the exhaust line 12 .

Das im Reformer anfallende Kondensat gelangt in den Wärmetauscher 4 und wird in diesem verdampft.The condensate accumulating in the reformer enters the heat exchanger 4 and is evaporated there.

Die Ausführungsform nach der Fig. 2 unterscheidet sich von jener nach der Fig. 1 nur da­ durch, daß in den Wärmetauscher 4 zusätzlich eine Frischwasserleitung 14 mündet, über die zusätzliches Wasser dem Wärmetauscher 4 zugeführt werden kann. Dadurch ist es möglich, die Abgase der Brennstoffzelle 2 im wesentlichen durch die Verdampfung von Was­ ser bzw. Kondensat abzukühlen.The embodiment according to FIG. 2 differs from that according to FIG. 1 only in that a fresh water line 14 also opens into the heat exchanger 4 , via which additional water can be supplied to the heat exchanger 4 . This makes it possible to cool the exhaust gases of the fuel cell 2 essentially by the evaporation of water or condensate.

Claims (3)

1. Blockheizkraftwerk, insbesondere für einen stromgeführten Be­ trieb, mit mindestens einer Brennstoffzelle (2) und einem dieser vorgeschalteten Reformer (1), der mit Brenngas beaufschlagbar ist, wobei die Brennstoffzelle (2) mit einem Wärmetauscher (4) thermisch gekoppelt ist, dadurch gekennzeichnet, daß in den Wärmetauscher (4) eine Kondensatleitung (13) des Reformers (1) mündet, der mit einer Abgasleitung (12) versehen ist.1. Combined heat and power plant, in particular for a current-carrying operation, with at least one fuel cell ( 2 ) and one of these upstream reformer ( 1 ), which can be acted upon with fuel gas, the fuel cell ( 2 ) being thermally coupled to a heat exchanger ( 4 ), thereby characterized in that a condensate line ( 13 ) of the reformer ( 1 ) opens into the heat exchanger ( 4 ) and is provided with an exhaust line ( 12 ). 2. Blockheizkraftwerk nach Anspruch 1, dadurch gekennzeichnet, daß in den Wärmetauscher (4) eine Frischwasserleitung (14) mündet.2. Combined heat and power plant according to claim 1, characterized in that a fresh water line ( 14 ) opens into the heat exchanger ( 4 ). 3. Blockheizkraftwerk nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, daß die Brennstoffzelle (2) über eine Abgasleitung (7) mit einem Nachbrenner (3) verbunden ist, dessen Abgasleitung (8) mit dem Reformer (1) verbunden ist und diesen mit heißem Abgas beaufschlagt.3. Combined heat and power plant according to claim 1 or 2, characterized in that the fuel cell ( 2 ) via an exhaust pipe ( 7 ) is connected to an afterburner ( 3 ), the exhaust pipe ( 8 ) is connected to the reformer ( 1 ) and this with hot exhaust gas.
DE19956221A 1998-11-23 1999-11-23 Combined heat and power plant, especially for a current-controlled operation Expired - Fee Related DE19956221B4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1956/98 1998-11-23
AT0195698A AT407315B (en) 1998-11-23 1998-11-23 CHP POWER PLANT

Publications (2)

Publication Number Publication Date
DE19956221A1 true DE19956221A1 (en) 2000-05-25
DE19956221B4 DE19956221B4 (en) 2010-04-08

Family

ID=3524689

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19956221A Expired - Fee Related DE19956221B4 (en) 1998-11-23 1999-11-23 Combined heat and power plant, especially for a current-controlled operation

Country Status (3)

Country Link
AT (1) AT407315B (en)
CH (1) CH690879A5 (en)
DE (1) DE19956221B4 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7785746B2 (en) 2002-01-18 2010-08-31 Intelligent Energy Limited Fuel cell oxygen removal and pre-conditioning system
EP2787568A3 (en) * 2008-02-07 2015-01-14 Vaillant GmbH High temperature fuel cell system with exhaust gas reclamation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333992A (en) * 1980-10-30 1982-06-08 United Technologies Corporation Method for producing steam from the liquid in a moist gas stream
US4994331A (en) * 1989-08-28 1991-02-19 International Fuel Cells Corporation Fuel cell evaporative cooling using fuel as a carrier gas
US5206094A (en) * 1990-11-30 1993-04-27 The United States Of America As Represented By The Secretary Of The Air Force Fuel cell evaporative cooler
US5360679A (en) * 1993-08-20 1994-11-01 Ballard Power Systems Inc. Hydrocarbon fueled solid polymer fuel cell electric power generation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7785746B2 (en) 2002-01-18 2010-08-31 Intelligent Energy Limited Fuel cell oxygen removal and pre-conditioning system
EP2787568A3 (en) * 2008-02-07 2015-01-14 Vaillant GmbH High temperature fuel cell system with exhaust gas reclamation

Also Published As

Publication number Publication date
CH690879A5 (en) 2001-02-15
ATA195698A (en) 2000-06-15
DE19956221B4 (en) 2010-04-08
AT407315B (en) 2001-02-26

Similar Documents

Publication Publication Date Title
DE3143161C2 (en)
EP0885467B1 (en) Process for utilising the enthalpy contained in the waste gases of a low-temperature fuel cell, and plant for carrying out said process
EP0807321B1 (en) Fuel cell modular arrangement with fuel cell stacks, catalytic combustion device and reformer integrated in an insulating protective housing
DE3345958A1 (en) FAST-STARTING METHANOL REACTOR SYSTEM
DE102006020145A1 (en) Fuel cell system with integrated fuel humidifier unit
WO2001003217A1 (en) Assembly for heating/cooling a fuel cell and a fuel cell system
DE10297594T5 (en) Fuel cell power plant with reduced volume of free water
DE102018219069A1 (en) Fuel cell system
AT408915B (en) HEATING SYSTEM
DE19931062B4 (en) Arrangement for heating / cooling a fuel cell and fuel cell system and their use
EP0361612B1 (en) Method for generating electricity
DE19956221A1 (en) Unit type power station, especially for flow-controlled operation, has reformer supplied with combustion gas and with condensate line that opens into heat exchanger which has exhaust gas line
EP1106569B1 (en) Vaporizer for a fuel cell system
CH690662A5 (en) Chp ..
AT408159B (en) FURNISHING WITH AT LEAST ONE FUEL CELL
DE102009037145B4 (en) High temperature fuel cell system with a starting burner
DE19630058A1 (en) Seasonally configured combined cycle thermal power station for remote heat supply system
EP1189298A1 (en) Installation and method to produce electrical power
DE10160463B4 (en) fuel cell plant
DE102005054963B4 (en) A method of preventing or at least reducing condensation in a cathode exhaust conduit of a fuel cell
DE60221630T2 (en) Method for controlling the startup of the available energy of a fuel cell
CH693919A5 (en) Means having at least one fuel cell.
EP1311015B1 (en) Fuel cell unit and method for operating said unit
DE10315758A1 (en) Polymer-electrolyte-membrane fuel cell has a region of the electrolyte membrane lying next to a feed connection on the cathode side formed as a moistening zone for the cathode gas
DE102021203106A1 (en) Method for operating a fuel cell system, fuel cell system

Legal Events

Date Code Title Description
8127 New person/name/address of the applicant

Owner name: VAILLANT GMBH, 42859 REMSCHEID, DE

8110 Request for examination paragraph 44
8364 No opposition during term of opposition
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee