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所属行业:电气机械和器材制造业

  • 22891.爱达荷州甲烷气体分离研究:爱达荷国家实验室的技术援助计划研究

    [化学原料和化学制品制造业,电气机械和器材制造业] [2014-02-21]

    Large amounts of methane in well water is a wide spread problem in North America. Methane gas from decaying biomass and oil and gas deposits escape into water wells typically through cracks or faults in otherwise non-porous rock strata producing saturated water systems. This methane saturated water can pose several problems in the delivery of drinking water. The problems range from pumps vapor locking (cavitating), to pump houses exploding. The City of Marsing requested Idaho National Laboratory (INL) to assist with some water analyses as well as to provide some engineering approaches to methane capture through the INL Technical Assistance Program (TAP). There are several engineering approaches to the removal of methane and natural gas from water sources that include gas stripping followed by compression and/or dehydration; membrane gas separators coupled with dehydration processes, membrane water contactors with dehydration processes.
    关键词:燃料电池;甲烷;生物量
  • 22892.ARRA项目分析结果:燃料电池市场转型(简报)

    [电气机械和器材制造业] [2014-02-21]

    This presentation discusses analysis results for American Recovery and Reinvestment Act early market fuel cell deployments and describes the objective of the project and its relevance to the Department of Energy Hydrogen and Fuel Cells Program; NREL's analysis approach; technical accomplishments including publication of a fourth set of composite data products; and collaborations and future work.
    关键词:燃料电池;氢;部署
  • 22893.固体氧化物燃料电池系统PVL线,(最终报告)

    [电力、热力、燃气及水生产和供应业,电气机械和器材制造业] [2014-02-21]

    In July 2010, Stark State College (SSC), received Grant DE-EE0003229 from the U.S. Department of Energy (DOE), Golden Field Office, for the development of the electrical and control systems, and mechanical commissioning of a unique 20kW scale high-pressure, high temperature, natural gas fueled Stack Block Test System (SBTS). SSC worked closely with subcontractor, Rolls-Royce Fuel Cell Systems (US) Inc. (RRFCS) over a 13 month period to successfully complete the project activities. This system will be utilized by RRFCS for pre-commercial technology development and training of SSC student interns. In the longer term, when RRFCS is producing commercial products, SSC will utilize the equipment for workforce training.
    关键词:燃料电池;电子阳极;阴极
  • 22894.提升燃料电池系统再生的循环效率

    [电气机械和器材制造业] [2014-02-21]

    Extensive testing of the breadboard system was completed including baseline leak rate measurements. Several improvements were made to the system to permit stable, automated operation at 4 kilowatts, twice the previous power output, and the system was demonstrated at this power output. The first round of bench-top hydrogen recovery reactor media testing was completed. The supplier s procurement efforts for the final deliverable of the hermetically- sealed scroll compressors were underway.
    关键词:燃料电池;基线;实验板模型
  • 22895.电力电子接口内部干扰源补偿

    [电气机械和器材制造业] [2014-02-21]

    The most suitable way, to eliminate simultaneously all side effects connected with the application of power electronic converters in Smart Grid systems, is the compensation of the interference sources inside of the power electronic interface. In such situation the compensation of the interference sources prevents both the spreading of the interference over extensive circuits and the uncontrolled aggregation of the interference generated by a group of converters, facilitating development of the compatible system.
    关键词:电力电子;接口;干扰源
  • 22896.智能电网安全:IEC62351和其他相关标准

    [电气机械和器材制造业,电力、热力、燃气及水生产和供应业] [2014-02-21]

    Security is not only relevant for the operation of the Smart Grid as a critical infrastructure but also very important for user acceptance. This especially affects domains like Smart Metering especially in the part of privacy issues. Many different standards exist in the IEC TC57 portfolio, among them standards especially designed for end-to-end security. Additionally international security standards like ISA 99 or the NERC CIP standards were developed and will be discussed here. Furthermore this chapter describes an overview on previous attacks in the energy domain, existing solutions and security standards, and also insights on security metrics and patterns.
    关键词:智能电网;安全;标准;基础设施
  • 22897.全球铅酸蓄电池市场报告(2014-2018年)

    [化学原料和化学制品制造业,电气机械和器材制造业] [2014-02-21]

    A lead acid battery is an electronic storage device that contains lead electrodes along with diluted sulfuric acid that acts as an electrolyte. Each cell in a lead acid battery generates power of around two volts. Though lead acid batteries have very low energy-to-weight and energy-to-volume ratios, they have the ability to supply high surge current. Surge current is the maximum current consumed by an electrical device when it is switched on. This feature of lead acid batteries combined with their cost-effectiveness is driving the demand in the Global Lead Acid Battery market.
    关键词:铅酸蓄电池;引线电极;电子存储装置;稀硫酸;电解质
  • 22898.ConnecticutNutmeg燃料电池公共汽车项目

    [电气机械和器材制造业,汽车制造业,电力、热力、燃气及水生产和供应业] [2014-02-21]

    This report summarizes the experience and early results from a fuel cell bus demonstration funded by the Federal Transit Administration (FTA) under the National Fuel Cell Bus Program (NFCBP). A team led by the Northeast Advanced Vehicle Consortium and UTC Power developed a next-generation fuel cell electric bus for demonstration. A total of four buses are being operated in service by Connecticut Transit in Hartford. The National Renewable Energy Laboratory has been tasked by FTA to evaluate the buses in service. This report documents the early development and implementation of the buses and summarizes the performance results through May 2012.
    关键词:燃料电池;公共汽车;康涅狄格州
  • 22899.FTA的燃料电池公共汽车项目:2011年研究成果。国家燃料电池公共汽车项目。

    [汽车制造业,电气机械和器材制造业] [2014-02-21]

    Prepared by the Federal Transit Administration (FTA) Office of Research, Demonstration, and Innovation (TRI), this report summarizes the accomplishments of fuel-cell-transit-bus-related research and demonstrations projects supported by FTA through 2011. It catalogs fuel cell electric bus research projects in the United States and describes their impact on commercialization of fuel cell power systems and electric propulsion for transit buses. Few barriers remain to reaching full commercialization of fuel cell electric buses. This report documents progress toward overcoming these barriers.
    关键词:燃料电池;混合动力公交车;能源管理
  • 22900.非传统支持单原子铂基催化剂的燃料电池技术的作用:理论表面科学方法

    [电气机械和器材制造业] [2014-02-21]

    As a first step towards a microscopic understanding of single-Pt atom-dispersed catalysts on non-conventional TiN supports, we present density- functional theory (DFT) calculations to investigate the adsorption properties of Pt atoms on the pristine TiN(100) surface, as well as the dominant influence of surface defects on the thermodynamic stability of platinized TiN. Optimized atomic geometries, energetics, and analysis of the electronic structure of the Pt/TiN system are reported for various surface coverages of Pt. We find that atomic Pt does not bind preferably to the clean TiN surface, but under typical PEM fuel cell operating conditions, i.e. strongly oxidizing conditions, TiN surface vacancies play a crucial role in anchoring the Pt atom for its catalytic function. Whilst considering the energetic stability of the Pt/TiN structures under varying N conditions, embedding Pt at the surface N-vacancy site is found to be the most favorable under N-lean conditions. Thus, the system of embedding Pt at the surface N-vacancy site on TiN(100) surface could be a promising catalyst for PEM fuel cells.
    关键词:燃料电池;吸附作用;原子
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