The aluminum nanoparticles (Al NPs) are demonstrated to serve as active photothermal media, to enhance and control local photothermal energy deposition via the photothermal effect activated by localized surface plasmon resonance (LSPR) and amplified by Al NPs oxidation. The activation source is a 2-AA-battery-powered xenon flash lamp. The extent of the photothermally activated movement of Al NPs can be approx. 6 mm. Ignition delay can be approx. 0.1 ms. Both scanning electron microscopy and energy-dispersive X-ray spectroscopy measurements of motion-only and after-ignition products confirm significant Al oxidation occurs through sintering and bursting after the flash exposure. Simulations suggest local heat generation is enhanced by LSPR. The positive- feedback effects from the local heat generation amplified by Al oxidation produce a large increase in local temperature and pressure, which enhances movement and accelerates ignition.

关键词：电池能源；光热光谱分析；等离子体

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In this paper, we present an approach to large-scale data analysis, Divide and Recombine (D&R), and describe a hardware and software implementation that supports this approach. We then illustrate the use of D&R on large-scale power systems sensor data to perform initial exploration discover multiple data integrity issues, build and validate algorithms to filter bad data, and construct statistical event detection algorithms. This paper also reports on experiences using a non-traditional Hadoop distributed computing setup on top of a HPC computing cluster.

关键词：算法；计算机程序；分布式数据处理；划分和重组

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In order to improve the efficiency of photovoltaic generation as well as the power quality,grid-connected inverters for PV generation research was carried out for photovoltaic maximum power point tracking.Based on some current studies on the incremental conductance method,an advanced incremental conductance control algorithm was proposed,which can track maximum power point rapidly and accurately.The oscillation phenomenon,which exists near the maximum power point,was improved at a great extent,so to the efficiency of photovoltaic cells generation electricity.The inverter control system has an advantage in its high speed and flexibility by applying advanced control algorithm.And the source harmonic current is remarkably reduced.In addition,the power factor is enhanced and the power quality is improved.Finally,according to the principle of inverter control system and based on the analysis on the mathematical model of photovoltaic inverter,a simulation model of that is established based on MATLAB/SIMULINK.

关键词：光伏发电；并网；逆变器；MPPT

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This paper presents background, experimental design, and preliminary experimental results for the liquid hydrogen bubble point tests conducted at the Cryogenic Components Cell 7 facility at the NASA Glenn Research Center in Cleveland, Ohio. The purpose of the test series was to investigate the parameters that affect liquid acquisition device (LAD) performance in a liquid hydrogen (LH2) propellant tank, to mitigate risk in the final design of the LAD for the Cryogenic Propellant Storage and Transfer Technology Demonstration Mission, and to provide insight into optimal LAD operation for future LH2 depots. Preliminary test results show an increase in performance and screen retention over the low reference LH2 bubble point value for a 325 2300 screen in three separate ways, thus improving fundamental LH2 LAD performance. By using a finer mesh screen, operating at a colder liquid temperature, and pressurizing with a noncondensible pressurant gas, a significant increase in margin is achieved in bubble point pressure for LH2 screen channel LADs.

关键词：液态氢；推进剂储存；推进剂箱

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This paper introduces an algorithm called 3-stage current source sorting (3S-CS) in half-unary weighted current cells to improve the linearity of a current-steering digital-to-analog converter (DAC). We show that based on our statistical analysis and simulation results, the proposed algorithm improves the DAC static linearity as well as its dynamic performance.

关键词：电池改进；线性电流源；电能储存

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The Department of Energy Office of Electricity (DOE/OE), Sandia National Laboratories (SNL) and the Base Camp Integration Lab (BCIL) partnered together to incorporate an energy storage system into a microgrid configured Forward Operating Base to reduce the fossil fuel consumption and to ultimately save lives. Energy storage vendors will be sending their systems to SNL Energy Storage Test Pad (ESTP) for functional testing and then to the BCIL for performance evaluation. The technologies that will be tested are electro-chemical energy storage systems comprising of lead acid, lithium-ion or zinc-bromide. Raytheon/KTech has developed an energy storage system that utilizes zinc-bromide flow batteries to save fuel on a military microgrid. This report contains the testing results and some limited analysis of performance of the Raytheon/KTech Zinc-Bromide Energy Storage System. The Raytheon/KTech RK30 Energy Storage System uses twelve RedFlow Zinc-Bromide Battery Modules (ZBMs) and six single phase inverters to sink, store, and supply electrical energy. Each ZBM is rated to hold up to 10kWh and each inverter is rated at 5kW making the system rated at 30kW and 120kWh. The inverters are 208VAC phase to phase inverters and are connected to a delta to wye isolation transformer to allow an electrical wye system interface.

关键词：电池；能源存储系统；电气设备

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The sintered body of tubular cathode for Direct Ethanol Fuel Cell(DEFC) is prepared by the gelcasting process using a certain proportion of graphite powder and mesocarbon microbead(MCMB).The electrical performance under different air flow rates,operating temperature,porosity of cathode diffusion layer,inlet pressure and different thickness of catalyst layer are analyzed by the combination of experimental and numerical simulation method.The results show that the increase of diffusion layer porosity,inlet pressure,thickness of catalyst layer and operating temperature are benefit for the improvement of the cell performance.Moreover,the electrical performance is improved when the air flow rate is 1 O0 mL/min.

关键词：直接乙醇燃料电池；管状阴极；电气性能

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The objective of the study was to assess the impact of a Saflex S Series solar control PVB (polyvinyl butyral) windshield on conventional vehicle fuel economy and electric vehicle (EV) range.

关键词：太阳能电池；乙烯聚合物；玻璃；电动汽车

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This paper presents results of a comparative study of a micro-combined heat and power (CHP) unit with solid oxide fuel cell (SOFC) fed by two different fuels.For current analysis biogas and dimethyl ether (DME) were selected.Detailed model of the micro-CHP system with net power output of 3 kWel was created,based on an advanced model of the SOFC.In both power units,steam reforming was employed in order to generate hydrogen-rich gas.Reforming temperatures of 900℃ and 350℃ were selected for biogas and DME,respectively.Both systems were based on the same reference solid oxide fuel cells.Similar plant outlines was employed,with small changes to accommodate different reformer operating temperatures.

关键词：固体氧化物燃料电池；微型热电联产；造型

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Safe transport and long term storage of used nuclear fuel requires that the fuel clad material remains structurally sound. Understanding the impact of irradiation on new and high burn-up fuel cladding materials is critical to make this assessment. There is, therefore, a need to establish the relationship between the behavior and performance of unirradiated cladding and actual irradiated cladding. ORNL is addressing this linkage with an experiment designed to simulate high-burnup used fuel cladding by irradiating cladding material in the High Flux Isotope Reactor (HFIR). Fast neutron irradiation of pre-hydrided zirconium-alloy cladding in the HFIR at elevated temperatures is being carried out to simulate the effects of high burnup on used fuel cladding. Test results from irradiated, prehydrided metallic materials will be used to benchmark test results of high-burnup used fuel cladding. Additionally, samples free of alpha contamination can be provided to researchers/students in universities without hot cell facilities to support the Department of Energy Office of Nuclear Energy Used Fuel Disposition Campaign (UFDC). This approach is designed to provide well-controlled neutron irradiation of pre-hydrided materials in the desired temperature range (200-350 degrees C) similar to the service temperatures of boiling water reactors (BWRs) and pressurized water reactors (PWRs). The clad hydrogen content is in the range of 400-800 weight parts per million (wppm), which is similar to what has been observed for high-burnup used fuel cladding in PWRs.

关键词：燃耗；覆层；污染；快中子；HFIR反应器

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