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    Fuel cell shutdown and startup using a cathode recycle loop
    61.
    发明授权
    Fuel cell shutdown and startup using a cathode recycle loop 有权
    使用阴极循环回路的燃料电池关闭和启动

    公开(公告)号：US07691508B2

    公开(公告)日：2010-04-06

    申请号：US11132988

    申请日：2005-05-19

    申请人： Steven G. Goebel

    发明人： Steven G. Goebel

    IPC分类号： H01M8/04 ,  H01M2/00

    CPC分类号： H01M8/04231 ,  H01M8/04014 ,  H01M8/04097

    摘要： A method and device for operating a fuel cell system. A recirculation loop coupled to a fuel cell cathode ensures that fluids passing through the cathode are recycled, thereby enabling reaction between residual oxygen in the recycled fluid and fuel that has been introduced into the recirculation loop until substantially all of the oxygen is reacted, leaving a substantially oxygen-free, predominantly nitrogen compound in the cathode and related flowpath. Thereafter, this compound can be redirected to purge the remaining residual hydrogen resident in the fuel cell's anode and related flowpath. While the present invention is usable during any period of system operation, it is especially valuable for operational conditions associated with starting up and shutting down a fuel cell system to inhibit the formation of high voltage potentials that could otherwise damage fuel cell catalysts or catalysts supports.

    摘要翻译： 一种用于操作燃料电池系统的方法和装置。 耦合到燃料电池阴极的再循环回路确保通过阴极的流体被再循环，从而使回收流体中的残余氧与被引入再循环回路的燃料之间的反应直到基本上所有的氧都反应， 基本上无氧，主要是阴极中的氮化合物和相关的流路。 此后，该化合物可以重新定向以清除残留在燃料电池阳极中的剩余氢气和相关的流路。 虽然本发明可以在系统操作的任何时段期间使用，但是与启动和关闭燃料电池系统相关联的操作条件特别有价值，以防止形成否则会损坏燃料电池催化剂或催化剂载体的高电压电位。

    SHUTDOWN OPERATIONS FOR AN UNSEALED CATHODE FUEL CELL SYSTEM
    62.
    发明申请
    SHUTDOWN OPERATIONS FOR AN UNSEALED CATHODE FUEL CELL SYSTEM 审中-公开
    用于无负载CATHODE燃料电池系统的关闭操作

    公开(公告)号：US20090263679A1

    公开(公告)日：2009-10-22

    申请号：US12103939

    申请日：2008-04-16

    申请人： Gary M. Robb ,  Hubert A. Gasteiger ,  Balasubramanian Lakshmanan ,  Paul Taichiang Yu ,  Steven G. Goebel ,  Frederick T. Wagner

    发明人： Gary M. Robb ,  Hubert A. Gasteiger ,  Balasubramanian Lakshmanan ,  Paul Taichiang Yu ,  Steven G. Goebel ,  Frederick T. Wagner

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04231 ,  H01M8/04559 ,  H01M8/04955

    摘要： Processes to shut down a fuel cell system are described. In one implementation (300), a load (215) is cyclically engaged and disengaged across a fuel cell stack (205) so as to deplete the fuel available to the system's fuel cells (205). Voltage and/or current thresholds may be used to determine when to engage and disengage the load (215) and when to terminate the shutdown operation. In another implementation (500), a variable load (405) is engaged and adjusted so as to deplete the fuel available to the system's fuel cells (205). As before, voltage and/or current thresholds may be used to determine when to adjust the load (405) and when to terminate the shutdown process. In still another implementation, a load (215 or 405) may be periodically engaged and disengaged during some portion of the shutdown process and engaged but adjusted during other portions of the shutdown process.

    摘要翻译： 描述关闭燃料电池系统的过程。 在一个实施方案（300）中，负载（215）在燃料电池堆（205）周期性地接合和分离，从而消耗可用于系统燃料电池（205）的燃料。 可以使用电压和/或电流阈值来确定何时接合和解除负载（215）以及何时终止关机操作。 在另一实施方案（500）中，接合和调节可变负载（405）以便耗尽系统燃料电池（205）可用的燃料。 如前所述，可以使用电压和/或电流阈值来确定何时调整负载（405）以及何时终止关机过程。 在另一个实施方案中，在关闭过程的某些部分期间，负载（215或405）可以周期性地接合和分离，并且在关闭过程的其他部分期间被接合但被调整。

    MEMBRANE WITH OPTIMIZED DIMENSIONS FOR A FUEL CELL
    63.
    发明申请
    MEMBRANE WITH OPTIMIZED DIMENSIONS FOR A FUEL CELL 有权
    具有燃料电池优化尺寸的膜

    公开(公告)号：US20090181275A1

    公开(公告)日：2009-07-16

    申请号：US11972211

    申请日：2008-01-10

    申请人： Matthew J. Beutel ,  Saurabh Vyas ,  Ronald L. James ,  Steven G. Goebel

    发明人： Matthew J. Beutel ,  Saurabh Vyas ,  Ronald L. James ,  Steven G. Goebel

    IPC分类号： H01M8/10

    CPC分类号： H01M8/0221 ,  H01M4/8828 ,  H01M8/0271 ,  H01M8/0284 ,  H01M8/1004

    摘要： A UEA for a fuel cell having an active region and a feed region is provided. The UEA includes an electrolyte membrane disposed between a pair of electrodes. The electrolyte membrane and the pair of electrodes is further disposed between a pair of DM. The electrolyte membrane, the pair of electrodes, and the DM are configured to be disposed at the active region of the fuel cell. A barrier film coupled to the electrolyte membrane is configured to be disposed at the feed region of the fuel cell. The dimensions of the electrolyte membrane are thereby optimized. A fuel cell having the UEA, and a fuel cell stack formed from a plurality of the fuel cells, is also provided.

    摘要翻译： 提供了具有有源区域和馈电区域的燃料电池的UEA。 UEA包括设置在一对电极之间的电解质膜。 电解质膜和一对电极进一步设置在一对DM之间。 电解质膜，一对电极和DM配置成设置在燃料电池的有源区域。 耦合到电解质膜的阻挡膜被配置为设置在燃料电池的进料区域。 由此优化电解质膜的尺寸。 还提供了具有UEA的燃料电池和由多个燃料电池形成的燃料电池堆。

    Nested bipolar plate for fuel cell and method
    66.
    发明授权
    Nested bipolar plate for fuel cell and method 有权

    公开(公告)号：US06974648B2

    公开(公告)日：2005-12-13

    申请号：US10661195

    申请日：2003-09-12

    申请人： Steven G. Goebel

    发明人： Steven G. Goebel

    IPC分类号： H01M8/02 ,  H01M8/04 ,  H01M8/10 ,  H01M2/00

    CPC分类号： H01M8/04029 ,  H01M8/0228 ,  H01M8/0254 ,  H01M8/0263 ,  H01M8/0267 ,  H01M8/0297 ,  H01M8/04074 ,  H01M8/1004 ,  H01M8/241 ,  H01M8/2484 ,  Y02P70/56 ,  Y10T83/0304

    摘要： Between adjacent MEA's is a bipolar plate assembly having a first sub-plate with a flow channel which is open to the anode side of the one of the MEA's. A second sub-plate has a flow channel which is open to the cathode side of the adjacent MEA. The sub-plates are nested together to form a coolant flow channel between the sub-plates. The coolant flow path has a height dimension wherein the distance between the adjacent MEA's is substantially unaffected by the height dimension of the coolant flow path. A method of manufacturing a bi-polar plate assembly includes forming a closed coolant flow channel between the sub-plates by nesting the sub-plates together. A method of operating a fuel cell includes passing the coolant through a flow path having a height dimension which is substantially aligned with the height dimension of the hydrogen flow path, the oxygen flow path, or both.

    Apparatus for mixing fuel and an oxidant
    67.
    发明授权
    Apparatus for mixing fuel and an oxidant 有权

    公开(公告)号：US06596424B2

    公开(公告)日：2003-07-22

    申请号：US09820600

    申请日：2001-03-30

    申请人： Steven G. Goebel

    发明人： Steven G. Goebel

    IPC分类号： H01M804

    CPC分类号： H01M8/0612 ,  C01B3/382 ,  C01B2203/0244 ,  C01B2203/066 ,  C01B2203/1276 ,  F23C2900/9901 ,  F23D14/62 ,  F23D2209/10 ,  F23L7/005 ,  H01M8/0618

    摘要： Apparatus and method for mixing fuel and an oxidant for use in an autothermal reformer that provides hydrogen to a fuel cell. The apparatus includes a mixing vessel (10), a first inlet (4) to the mixing vessel for movement of gaseous fuel or oxidant therethrough, a second inlet for movement of gaseous fuel or oxidant therethrough, and an exit (60) from the vessel adjacent the autothermal reformer. The discharge ends of the inlets are spaced apart from each other and from the exit which is near a POX reactor (61) that combusts the mixture of fuel and oxidant exiting from the mixing vessel. The first inlet is comprised of a plate (26) with a plurality of tubes (24) extending therefrom through which fuel or oxidant passes. The tubes extend into the mixing vessel and towards the exit of the vessel such that the fuel does not come into contact with the oxidant until the gaseous fuel or oxidant discharges from the ends (30) of the tubes thereby mixing the fuel with the oxidant in the gaseous state prior to passing to the POX reactor.

    Air fuel mixer for gas turbine combustor
    68.
    发明授权
    Air fuel mixer for gas turbine combustor 失效

    公开(公告)号：US6141967A

    公开(公告)日：2000-11-07

    申请号：US5343

    申请日：1998-01-09

    申请人： Paul R. Angel ,  James M. Caldwell ,  Narendra D. Joshi ,  Steven Marakovits ,  Kelley A. Foresman ,  Steven G. Goebel ,  Richard E. Warren, Jr.

    发明人： Paul R. Angel ,  James M. Caldwell ,  Narendra D. Joshi ,  Steven Marakovits ,  Kelley A. Foresman ,  Steven G. Goebel ,  Richard E. Warren, Jr.

    IPC分类号： F23R3/14 ,  F23R3/28 ,  F02C1/00

    CPC分类号： F23R3/14 ,  F23R3/286

    摘要： An apparatus for premixing fuel and air prior to combustion in a gas turbine engine, including: a linear mixing duct having a circular cross-section defined by a wall; a centerbody located along a central axis of the mixing duct and extending substantially the full length of the mixing duct, the centerbody having a plurality of orifices therein to inject fuel into the mixing duct with an axial velocity component; a fuel supply in flow communication with the centerbody orifices; an outer annular swirler located adjacent an upstream end of the mixing duct and including a plurality of circumferentially spaced vanes oriented so as to swirl air flowing therethrough in a first direction; an inner annular swirler located adjacent the mixing duct upstream end and including a plurality of circumferentially spaced vanes, the vanes having an outer radial portion having a leading edge and a trailing edge oriented so as to swirl air flowing therethrough in a second direction opposite the first swirl direction by the outer annular swirler vanes and an inner radial portion with a leading edge and a trailing edge oriented so as to provide a boundary layer of air substantially along the centerbody; and, a hub separating the inner and outer annular swirlers to permit independent rotation of an air stream therethrough. The outer annular swirler may also include vanes having an inner radial portion with a leading edge and a trailing edge oriented so as to swirl the air flow therethrough and an outer radial portion having a leading edge and a trailing edge oriented so as to provide a boundary layer of air substantially along the mixing duct wall. High pressure air is injected from a compressor into the mixing duct through the inner and outer annular swirlers and fuel is injected into the mixing duct so that the high pressure air and the fuel is uniformly mixed therein, whereby minimal formation of pollutants is produced when the fuel/air mixture is exhausted out the downstream end of the mixing duct into a combustor and ignited.

    Freeze start operation in a fuel cell with a blocked anode cell
    69.
    发明授权
    Freeze start operation in a fuel cell with a blocked anode cell 有权
    在具有阻塞阳极电池的燃料电池中冻结启动操作

    公开(公告)号：US09005830B2

    公开(公告)日：2015-04-14

    申请号：US12706354

    申请日：2010-02-16

    申请人： Steven G. Goebel ,  Matthew K. Hortop

    发明人： Steven G. Goebel ,  Matthew K. Hortop

    IPC分类号： H01M8/04 ,  H01M8/10

    CPC分类号： H01M8/04253 ,  H01M8/04223 ,  H01M8/04302 ,  H01M8/04303 ,  H01M8/04365 ,  H01M8/04388 ,  H01M8/04552 ,  H01M8/04559 ,  H01M8/04671 ,  H01M8/2457 ,  H01M2008/1095 ,  Y02E60/50

    摘要： Methods for starting a fuel cell system are provided. In one embodiment, the method includes providing hydrogen to an inlet of an anode of the fuel cell pressurizing the anode to a pressure; determining whether a blocked cell condition exists; if a blocked cell condition exists, if no blocked cell condition exists, initiating a normal start sequence, alternately reducing the pressure of the anode and increasing the pressure of the anode until an exit condition exists, the exit condition selected from a voltage of the fuel cell being stable, or a temperature of the fuel cell being greater than about 0° C., or both, and when the exit condition exists, initiating the normal start sequence.

    摘要翻译： 提供了启动燃料电池系统的方法。 在一个实施例中，该方法包括向燃料电池的阳极的入口提供氢气以将阳极加压至压力; 确定是否存在阻塞的细胞条件; 如果存在阻塞的电池状况，则如果不存在阻塞的电池状况，启动正常启动顺序，交替地降低阳极的压力并增加阳极的压力直到存在出口条件，则从燃料的电压 电池稳定，或者燃料电池的温度大于约0℃或两者，并且当出口条件存在时，启动正常启动顺序。