Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L59/00—Thermal insulation in general
  • F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L59/00—Thermal insulation in general
  • F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
  • F16L59/121—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies for pipes passing through walls or partitions
• • 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
  • H01M8/02—Details
• • 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
• • 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
  • H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
• • 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
  • H01M8/10—Fuel cells with solid electrolytes
  • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
  • H01M2008/1293—Fuel cells with solid oxide electrolytes
• • 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
  • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
  • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
• • 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

Definitions

• the invention relates to a fuel cell system with an insulation device for thermal insulation of a first region against a second region, the first region generally being at a higher temperature level during operation of the fuel cell system than the second region and the isolation device being at least one has the first region and the second region adjacent to the lead-through region through which at least one component of the fuel cell system is carried out during operation of the fuel cell system and thus is in thermal contact with the first region and the second region.
• Fuel cell systems serve to generate electrical energy and heat energy, with the primary supply of fossil fuels becoming increasingly important.
• the fuels used are preferably used, while in stationary use, that is to say in particular in the domestic sector, natural gas and fuel oil are used.
• Processing these fuels requires a reforming process that is at least partially highly exothermic.
• afterburners are used, which can convert the exhaust gases of the fuel cell or primary fuel into exothermic reactions.
• the fuel cells themselves arranged in the fuel cell system also generate waste heat, which is considerable, in particular in the case of SOFC fuel cells (solid oxide fuel cell) can. Depending on the operating state and design, temperatures in the range of 500 to 1000 ° C. are therefore present in the fuel cell system.
• the invention is based, to avoid unwanted heat transfer in a fuel cell system the task.
• the invention is based on the generic fuel cell system in that at least a part of the component consists of a material which has a lower thermal conductivity than the adjoining parts, whereby an insulating part is present, and that the insulating part at least partially within the feedthrough area lies.
• the component is, for example, an exhaust pipe
• a part of this exhaust pipe is made of a poor heat conductor, while the adjoining pipe parts are conventionally made of heat-resistant metal.
• the thus available insulating part of the exhaust pipe is at least partially disposed within the feedthrough region, so that the metal pipe part lying in the first region can not come into thermal contact with the second region, just as the metal pipe part lying in the second region does not thermally heat the first region contacted.
• This principle described using the example of the exhaust pipe, applies to any components that are carried out by the insulation device, for example fuel feeds, oxidant feeds, burner tubes, flame tubes, reformer tubes, etc.
• the invention can usefully be designed so that the insulating part lies completely within the bushing area. Although it is only essential for the basic success of the present invention that the insulating part partially overlaps with the lead-through area, the arrangement of the insulating part completely constantly within the implementation area is a preferable solution.
• the insulating part has a reflective surface facing the first area.
• the insulating part thus serves not only to prevent the heat conduction between the two areas, but it can be lowered by the reflective surface and radiation losses.
• the reflective coating can, for example, be vapor-deposited onto the insulating part.
• the insulating part has connecting means for connecting the parts adjacent thereto.
• the insulating part may have internal threads into which the adjacent externally threaded component parts are screwed. Bayonet locks or similar mechanical couplings are also possible.
• the insulating part is part of the insulation device.
• the isolation device serves as a coupling means for various modules.
• the isolation device can be equipped from the outset with the insulation parts of the individual modules, so that the modules are mounted in a simple manner to the insulation part, for example by screwing.
• the insulating part consists of ceramic.
• FIG. 1 shows a part of a first embodiment of a fuel cell system according to the invention in a partially sectioned illustration
• FIG. 2 shows a part of a second embodiment of a fuel cell system according to the invention in a partially sectioned illustration
• FIG. 3 shows a part of a third embodiment of a fuel cell system according to the invention in a partially sectioned illustration
• FIG. 4 shows a part of a fourth embodiment of a fuel cell system according to the invention in a partially sectioned illustration
• FIG. 5 shows a part of a fifth embodiment of a fuel cell system according to the invention in a partially sectioned illustration
• FIG. 7 shows an insulation device with insulation part in FIG.
• FIG. 1 shows a part of a first embodiment of a fuel cell system according to the invention in a partially sectioned illustration.
• the partially illustrated fuel cell system 10 includes a high temperature region 14 and a low temperature region 16, where the region 16 is, for example, the environment of the fuel cell system 10. It is also possible that the regions 14, 16 are both within the fuel cell system 10, but are usefully maintained at different temperature levels.
• the regions 14, 16 are separated from one another by an insulation device 12, wherein the insulation device 12 has a leadthrough region 18. Through this passage region 18, a component 20 of the fuel cell system 10 is passed, for example, an exhaust pipe. In order to prevent a heat conduction from the region 14 into the region 16, a part of the component 20 is formed as an insulating part 22.
• the insulating member 22 is made of ceramic, while the rest of the component 20 is made of a high temperature resistant metal.
• the insulating part 22 can continue to serve as a connecting element, namely, by being equipped with connecting means.
• the insulating member 22 carries internal thread into which the adjoining parts are screwed via provided on these parts external thread.
• Figure 2 shows a part of a second embodiment of a fuel cell system according to the invention in a partially sectioned illustration.
• a reflecting surface 24 is shown in FIG Provided portion of the insulating part, which reduces radiation losses from the first region 14 in the second region 16.
• Figure 3 shows a part of a third embodiment of a fuel cell system according to the invention in a partially sectioned illustration.
• the insulating part 22 partially overlaps with the high-temperature region 14.
• the insulating part 22 is not located completely within the lead-through region 18. However, the formation of a thermal bridge is also avoided in this way.
• FIG. 4 shows part of a fourth embodiment of a fuel cell system according to the invention in a partially sectioned illustration.
• the insulating part partly overlaps with the low temperature region 16.
• a thermal bridge between the high temperature region 14 and the region 16 is also avoided by this arrangement.
• FIG. 5 shows a part of a fifth embodiment of a fuel cell system according to the invention in a partially sectioned representation.
• the component 20 to be passed through the lead-through region 18 has different dimensions on the two opposite sides of the insulating part 22.
• the insulation part can not only take over the task of insulation and the connection, but is also suitable for providing a certain adaptation functionality.
• FIG. 6 shows a component with insulation part to be implemented by an insulation device. In this example, the insulating part 22 together with the adjoining parts of the component 20 can be handled independently.
• FIG. 7 shows an insulation device with insulation part in the leadthrough region.
• the insulation part 22 is fixedly connected to the insulation device 12, so that the insulation device 12 provides a mounting device for the individual modules of the fuel cell system, in particular when the insulation part 22 has connection means.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Mechanical Engineering (AREA)
• Fuel Cell (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=38608810

Family Applications (1)

Country Status (11)

Families Citing this family (1)

Family Cites Families (6)

• 2006
  • 2006-07-10 DE DE102006031864A patent/DE102006031864A1/de not_active Withdrawn
• 2007
  • 2007-05-23 CN CNA2007800257930A patent/CN101501905A/zh active Pending
  • 2007-05-23 KR KR1020097000654A patent/KR20090021309A/ko not_active Application Discontinuation
  • 2007-05-23 AU AU2007272133A patent/AU2007272133A1/en not_active Abandoned
  • 2007-05-23 BR BRPI0714144-0A patent/BRPI0714144A2/pt not_active IP Right Cessation
  • 2007-05-23 CA CA002656574A patent/CA2656574A1/en not_active Abandoned
  • 2007-05-23 EP EP07722455A patent/EP2038948A1/de not_active Withdrawn
  • 2007-05-23 WO PCT/DE2007/000928 patent/WO2008006325A1/de active Application Filing
  • 2007-05-23 JP JP2009518708A patent/JP2009543301A/ja not_active Withdrawn
  • 2007-05-23 EA EA200970035A patent/EA200970035A1/ru unknown
  • 2007-06-23 US US12/305,774 patent/US20110244352A1/en not_active Abandoned

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