National Library of Energy BETA

Sample records for hybrid system ii

  1. A HYBRID INTELLIGENT SYSTEM FOR FORMULATION OF BCS CLASS II DRUGS IN HARD GELATIN CAPSULES

    E-Print Network [OSTI]

    Peng, Yun

    A HYBRID INTELLIGENT SYSTEM FOR FORMULATION OF BCS CLASS II DRUGS IN HARD GELATIN CAPSULES Gunjan in hard gelatin cap- sules. Several significant challenges are involved in drug- formulation: the active of drug formulations for hard gelatin capsules can present significant challenges [4]. Some

  2. Hybrid Systems Frits Vaandrager

    E-Print Network [OSTI]

    Vaandrager, Frits

    on these data, the computer may decide to turn on a heating system, switch off a pump, etc. When a dangerous1 Hybrid Systems Frits Vaandrager 1 Introduction Hybrid systems are systems that intermix discrete. The specification, design and analysis of hybrid systems require a synthesis of ideas, concepts, mathe­ matical

  3. Hybrid Systems State estimation for hybrid systems: applications

    E-Print Network [OSTI]

    Tomlin, Claire

    Hybrid Systems State estimation for hybrid systems: applications to aircraft tracking I. Hwang, H of a stochastic linear hybrid system, given only the continuous system output data, is studied. Well established techniques for hybrid estimation, known as the multiple model adaptive estimation algorithm

  4. Hybrid Renewable Energy Systems for a Dynamically Positioned Buoy

    E-Print Network [OSTI]

    Wood, Stephen L.

    i Hybrid Renewable Energy Systems for a Dynamically Positioned Buoy by Robert Sean Pagliari ________________________ #12; ii We the undersigned committee hereby approve the attached thesis Hybrid Renewable Energy, College of Engineering #12; iii Abstract Hybrid Renewable Energy Systems for a Dynamically Positioned

  5. Remote hybrid power systems

    SciTech Connect (OSTI)

    Barley, C.D.; Winn, C.B. [Colorado State Univ., Fort Collins, CO (United States)

    1997-12-31

    This paper provides an overview of the emerging technology of remote, stand-alone electrical power systems featuring a renewable source (wind or photovoltaics [PV]) as well as a diesel generator, with or without an energy storage device. Other stand-alone power systems are discussed briefly, mainly to emphasize the domain of hybrid systems. The history of hybrid systems is reviewed, beginning with the first wind/diesel system in the late 1970s. Other topics include issues arising from the characteristics of diesel engine/generator sets; simple vs. complex systems; the various energy storage technologies that have been used or proposed; control strategies; modeling; optimization; and some {open_quotes}nuts & bolts{close_quotes} details. The bibliography includes over 130 references which are cited throughout the topical discussions. It is concluded that the technical feasibility of hybrid systems has been demonstrated through many prototype installations, and that areas for further improvements include higher reliability and more economical energy storage devices. 139 refs., 7 figs., 1 tab.

  6. Hybrid Automata-based CEGAR for Rectangular Hybrid Systems

    E-Print Network [OSTI]

    Liberzon, Daniel

    Hybrid Automata-based CEGAR for Rectangular Hybrid Systems Pavithra Prabhakar, Sridhar Duggirala- example guided abstraction-refinement (CEGAR) for systems modelled as rectangular hybrid automata. The main difference, between our ap- proach and previous proposals for CEGAR for hybrid automata

  7. Global optimization of hybrid systems

    E-Print Network [OSTI]

    Lee, Cha Kun

    2006-01-01

    Systems that exhibit both discrete state and continuous state dynamics are called hybrid systems. In most nontrivial cases, these two aspects of system behavior interact to such a significant extent that they cannot be ...

  8. Hybrid spread spectrum radio system

    DOE Patents [OSTI]

    Smith, Stephen F. (London, TN) [London, TN; Dress, William B. (Camas, WA) [Camas, WA

    2010-02-09

    Systems and methods are described for hybrid spread spectrum radio systems. A method, includes receiving a hybrid spread spectrum signal including: fast frequency hopping demodulating and direct sequence demodulating a direct sequence spread spectrum signal, wherein multiple frequency hops occur within a single data-bit time and each bit is represented by chip transmissions at multiple frequencies.

  9. Hybrid powertrain system

    DOE Patents [OSTI]

    Grillo, Ricardo C.; O'Neil, Walter K.; Preston, David M.

    2005-09-20

    A hybrid powertrain system is provided that includes a first prime mover having a rotational output, a second prime mover having a rotational output, and a transmission having a main shaft supporting at least two main shaft gears thereon. The transmission includes a first independent countershaft drivingly connected to the first prime mover and including at least one ratio gear supported thereon that meshes with a respective main shaft gear. A second independent countershaft is drivingly connected to the second prime mover and includes at least one ratio gear supported thereon that meshes with a respective main shaft gear. The ratio gears on the first and second countershafts cooperate with the main shaft gears to provide at least one gear ratio between the first and second countershafts and the main shaft. A shift control mechanism selectively engages and disengages the first and second countershafts for rotation with the main shaft.

  10. Hybrid solar lighting distribution systems and components

    DOE Patents [OSTI]

    Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

    2011-07-05

    A hybrid solar lighting distribution system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates all components.

  11. Hybrid solar lighting systems and components

    DOE Patents [OSTI]

    Muhs, Jeffrey D. (Lenoir City, TN); Earl, Dennis D. (Knoxville, TN); Beshears, David L. (Knoxville, TN); Maxey, Lonnie C. (Powell, TN); Jordan, John K. (Oak Ridge, TN); Lind, Randall F. (Lenoir City, TN)

    2007-06-12

    A hybrid solar lighting system and components having at least one hybrid solar concentrator, at least one fiber receiver, at least one hybrid luminaire, and a light distribution system operably connected to each hybrid solar concentrator and each hybrid luminaire. A controller operates each component.

  12. Hybrid solar thermal-photovoltaic systems demonstration, Phase I and II. Final technical progress report, July 5, 1979-December 1982

    SciTech Connect (OSTI)

    Loferski, J.J.

    1983-12-01

    The purpose of the project is to investigate a system based on combined photovoltaic/thermal (PV/T) panels to supply the energy needs of a small single family residence. The system finally selected and constructed uses PV/T panels which utilize air as the heat transfer medium. Optimization of thermal performance was accomplished by attaching metal fins to the back surface of each cell which significantly increased the heat transfer coefficient from the solar cells to the air stream. The other major components of the selected system are an air-to-air heat pump, a rock bin thermal energy storage bin, a synchronous dc-to-ac converter, a microprocessor to control the system, a heat exchanger for the domestic hot water system and of course the building itself which is a one story, well insulated structure having a floor area of 1200 ft/sup 2/. A prototype collector was constructed and tested. Based on this experience, twenty collectors, containing 2860 four inch diameter solar cells, were constructed and installed on the building. Performance of the system was simulated using a TRNSYS-derived program, modified to accommodate PV/T panels and to include the particular components included in the selected system. Simulation of the performance showed that about 65 percent of the total annual energy needs of the building would be provided by the PV/T system. Of this total, about one half is produced at a time when it can be used in the building and one half must be sold back to the utility.

  13. Solar Central Receiver Hybrid Power Systems sodium-cooled receiver concept. Final report. Volume II, Book 2. Conceptual design, Sections 5 and 6

    SciTech Connect (OSTI)

    None

    1980-01-01

    The overall, long-term objective of the Solar Central Receiver Hybrid Power System program is to identify, characterize, and ultimately demonstrate the viability and cost effectiveness of solar/fossil, steam Rankine cycle, hybrid power systems that: (1) consist of a combined solar central receiver energy source and a nonsolar energy source at a single, common site, (2) may operate in the base, intermediate, and peaking capacity modes, (3) produce the rated output independent of variations in solar insolation, (4) provide a significant savings (50% or more) in fuel consumption, and (5) produce power at the minimum possible cost in mills/kWh. It is essential that these hybrid concepts be technically feasible and economically competitive with other systems in the near to mid-term time period (1985-1990) on a commercial scale. The program objective for Phase I is to identify and conceptually characterize solar/fossil steam Rankine cycle, commercial-scale, power plant systems that are economically viable and technically feasible. This volume contains the detailed conceptual design and cost/performance estimates and an assessment of the commercial scale solar central receiver hybrid power system. (WHK)

  14. Distributed Theorem Proving for Distributed Hybrid Systems

    E-Print Network [OSTI]

    Platzer, André

    system with a varying number of arbitrarily many cars. 1 Introduction Hybrid systems with joint discrete a multi-agent system, e.g., distributed car control systems. Such systems form distributed hybrid systemsDistributed Theorem Proving for Distributed Hybrid Systems David W. Renshaw, Sarah M. Loos

  15. Hybrid Systems: From Verification to Falsification

    E-Print Network [OSTI]

    Kavraki, Lydia E.

    Hybrid Systems: From Verification to Falsification Erion Plaku, Lydia E. Kavraki, and Moshe Y}@cs.rice.edu Abstract. We propose HyDICE, Hybrid DIscrete Continuous Exploration, a multi-layered approach for hybrid. The discrete search uses the discrete transitions of the hybrid system and coarse-grained decompositions

  16. Solar Central Receiver Hybrid Power Systems sodium-cooled receiver concept. Final report. Volume II, Book 1. Conceptual design, Sections 1 through 4

    SciTech Connect (OSTI)

    1980-01-01

    The overall, long-term objective of the Solar Central Receiver Hybrid Power System program is to identify, characterize, and ultimately demonstrate the viability and cost effectiveness of solar/fossil, steam Rankine cycle, hybrid power systems that: (1) consist of a combined solar central receiver energy source and a nonsolar energy source at a single, common site, (2) may operate in the base, intermediate, and peaking capacity modes, (3) produce the rated output independent of variations in solar insolation, (4) provide a significant savings (50% or more) in fuel consumption, and (5) produce power at the minimum possible cost in mills/kWh. It is essential that these hybrid concepts be technically feasible and economically competitive with other systems in the near to mid-term time period (1985-1990) on a commercial scale. The program objective for Phase I is to identify and conceptually characterize solar/fossil steam Rankine cycle, commercial-scale, power plant systems that are economically viable and technically feasible. This volume presents in detail the market analysis, parametric analysis, and the selection process for the preferred system. (WHK)

  17. Modeling and Analysis ofModeling and Analysis of Hybrid Control SystemsHybrid Control Systems

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Modeling and Analysis ofModeling and Analysis of Hybrid Control SystemsHybrid Control Systems Karl.kth.se/~kallej MOVEP 2006, Bordeaux, France Karl H. Johansson, Hybrid control systems, MOVEP, Bordeaux on commands and autonomous actions #12;Karl H. Johansson, Hybrid control systems, MOVEP, Bordeaux, 2006

  18. System Simulations of Hybrid Electric Vehicles with Focus on...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    System Simulations of Hybrid Electric Vehicles with Focus on Emissions System Simulations of Hybrid Electric Vehicles with Focus on Emissions Comparative simulations of hybrid...

  19. Hybrid powertrain system

    DOE Patents [OSTI]

    Hughes, Douglas A. (Wixom, MI)

    2007-09-25

    A powertrain system is provided that includes a first prime mover and change-gear transmission having a first input shaft and a second input shaft. A twin clutch is disposed between the first prime mover and the transmission. The twin clutch includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft. The powertrain system also includes a second prime mover operably connected to one of the first and second input shafts.

  20. Hybrid powertrain system

    DOE Patents [OSTI]

    Hughes, Douglas A.

    2006-08-01

    A powertrain system is provided that includes a first prime mover and change-gear transmission having a first input shaft and a second input shaft. A twin clutch is disposed between the first prime mover and the transmission. The twin clutch includes a first main clutch positioned between the first prime mover and the first input shaft and a second main clutch positioned between the first prime mover and the second input shaft. The powertrain system also includes a second prime mover operably connected to one of the first and second input shafts.

  1. A verification framework for hybrid systems

    E-Print Network [OSTI]

    Mitra, Sayan

    2007-01-01

    Combining; discrete state transitions with differential equations, Hybrid system models provide an expressive formalism for describing software systems that interact with a physical environment. Automatically checking ...

  2. Hybrid slab-microchannel gel electrophoresis system

    DOE Patents [OSTI]

    Balch, Joseph W. (Livermore, CA); Carrano, Anthony V. (Livermore, CA); Davidson, James C. (Livermore, CA); Koo, Jackson C. (San Ramon, CA)

    1998-01-01

    A hybrid slab-microchannel gel electrophoresis system. The hybrid system permits the fabrication of isolated microchannels for biomolecule separations without imposing the constraint of a totally sealed system. The hybrid system is reusable and ultimately much simpler and less costly to manufacture than a closed channel plate system. The hybrid system incorporates a microslab portion of the separation medium above the microchannels, thus at least substantially reducing the possibility of non-uniform field distribution and breakdown due to uncontrollable leakage. A microslab of the sieving matrix is built into the system by using plastic spacer materials and is used to uniformly couple the top plate with the bottom microchannel plate.

  3. Hybrid chirped pulse amplification system

    DOE Patents [OSTI]

    Barty, Christopher P.; Jovanovic, Igor

    2005-03-29

    A hybrid chirped pulse amplification system wherein a short-pulse oscillator generates an oscillator pulse. The oscillator pulse is stretched to produce a stretched oscillator seed pulse. A pump laser generates a pump laser pulse. The stretched oscillator seed pulse and the pump laser pulse are directed into an optical parametric amplifier producing an optical parametric amplifier output amplified signal pulse and an optical parametric amplifier output unconverted pump pulse. The optical parametric amplifier output amplified signal pulse and the optical parametric amplifier output laser pulse are directed into a laser amplifier producing a laser amplifier output pulse. The laser amplifier output pulse is compressed to produce a recompressed hybrid chirped pulse amplification pulse.

  4. Hybrid spread spectrum radio system

    DOE Patents [OSTI]

    Smith, Stephen F. (London, TN); Dress, William B. (Camas, WA)

    2010-02-02

    Systems and methods are described for hybrid spread spectrum radio systems. A method includes modulating a signal by utilizing a subset of bits from a pseudo-random code generator to control an amplification circuit that provides a gain to the signal. Another method includes: modulating a signal by utilizing a subset of bits from a pseudo-random code generator to control a fast hopping frequency synthesizer; and fast frequency hopping the signal with the fast hopping frequency synthesizer, wherein multiple frequency hops occur within a single data-bit time.

  5. Quantum technologies with hybrid systems

    E-Print Network [OSTI]

    G. Kurizki; P. Bertet; Y. Kubo; K. Mølmer; D. Petrosyan; P. Rabl; J. Schmiedmayer

    2015-04-01

    An extensively pursued current direction of research in physics aims at the development of practical technologies that exploit the effects of quantum mechanics. As part of this ongoing effort, devices for information processing, secure communication and high-precision sensing are being implemented with diverse systems, ranging from photons, atoms and spins to mesoscopic superconducting and nanomechanical structures. Their physical properties make some of these systems better suited than others for specific tasks; thus, photons are well suited for transmitting quantum information, weakly interacting spins can serve as long-lived quantum memories, and superconducting elements can rapidly process information encoded in their quantum states. A central goal of the envisaged quantum technologies is to develop devices that can simultaneously perform several of these tasks, namely, reliably store, process, and transmit quantum information. Hybrid quantum systems composed of different physical components with complementary functionalities may provide precisely such multi-tasking capabilities. This article reviews some of the driving theoretical ideas and first experimental realizations of hybrid quantum systems and the opportunities and the challenges they present and offers a glance at the near- and long-term perspectives of this fascinating and rapidly expanding field.

  6. Hybrid Geometric Reduction of Hybrid Systems Aaron D. Ames and Shankar Sastry

    E-Print Network [OSTI]

    Sastry, S. Shankar

    Hybrid Geometric Reduction of Hybrid Systems Aaron D. Ames and Shankar Sastry Abstract-- This paper presents a unifying framework in which to carry out the hybrid geometric reduction of hybrid systems, generalizing classical reduction to a hybrid setting. I. INTRODUCTION The reduction of mechanical systems

  7. Dynamic Analysis of Hybrid Energy Systems under Flexible Operation and Variable Renewable Generation -- Part I: Dynamic Performance Analysis and Part II: Dynamic Cost

    SciTech Connect (OSTI)

    Humberto E. Garcia; Amit Mohanty; Wen-Chiao Lin; Robert S. Cherry

    2013-04-01

    Dynamic analysis of hybrid energy systems (HES) under flexible operation and variable renewable generation is considered in order to better understand various challenges and opportunities associated with the high system variability arising from the integration of renewable energy into the power grid. Unique consequences are addressed by devising advanced HES solutions in which multiple forms of energy commodities, such as electricity and chemical products, may be exchanged. Dynamic models of various unit operations are developed and integrated within two different HES options. One HES option, termed traditional, produces electricity only and consists of a primary heat generator (PHG) (e.g., a small modular reactor), a steam turbine generator, a wind farm, and a battery storage. The other HES option, termed advanced, includes not only the components present in the traditional option but also a chemical plant complex to repurpose excess energy for non-electricity services, such as for the production of chemical goods (e.g., transportation fuel). In either case, a given HES is connected to the power grid at a point of common coupling and requested to deliver a certain electricity generation profile as dictated by a regional power grid operator based on a predicted demand curve. Dynamic analysis of these highly-coupled HES are performed to identify their key dynamical properties and limitations and to prescribe solutions for best managing and mitigating the high variability introduced from incorporating renewable energy into the energy mix. A comparative dynamic cost analysis is also conducted to determine best HES options. The cost function includes a set of metrics for computing fixed costs, such as fixed operations and maintenance (O&M) and overnight capital costs, and also variable operational costs, such as cost of variability, variable O&M cost, and cost of environmental impact, together with revenues. Assuming different options for implementing PHG (e.g., natural gas, coal, nuclear), preliminary results identify the level of renewable penetration at which a given advanced HES option (e.g., a nuclear hybrid) becomes increasingly more economical than a traditional electricity-only generation solution. Conditions are also revealed under which carbon resources may be better utilized as carbon sources for chemical production rather than as combustion material for electricity generation.

  8. System for controlling a hybrid energy system

    DOE Patents [OSTI]

    Hoff, Brian D.; Akasam, Sivaprasad

    2013-01-29

    A method includes identifying a first operating sequence of a repeated operation of at least one non-traction load. The method also includes determining first and second parameters respectively indicative of a requested energy and output energy of the at least one non-traction load and comparing the determined first and second parameters at a plurality of time increments of the first operating sequence. The method also includes determining a third parameter of the hybrid energy system indicative of energy regenerated from the at least one non-traction load and monitoring the third parameter at the plurality of time increments of the first operating sequence. The method also includes determining at least one of an energy deficiency or an energy surplus associated with the non-traction load of the hybrid energy system and selectively adjusting energy stored within the storage device during at least a portion of a second operating sequence.

  9. Sensitivity analysis of oscillating hybrid systems

    E-Print Network [OSTI]

    Saxena, Vibhu Prakash

    2010-01-01

    Many models of physical systems oscillate periodically and exhibit both discrete-state and continuous-state dynamics. These systems are called oscillating hybrid systems and find applications in diverse areas of science ...

  10. Hybrid Cotangent Bundle Reduction of Simple Hybrid Mechanical Systems with Symmetry

    E-Print Network [OSTI]

    Ames, Aaron

    Hybrid Cotangent Bundle Reduction of Simple Hybrid Mechanical Systems with Symmetry Aaron D. Ames the notion of a simple hybrid mechanical system, which generalizes mechanical systems to include unilateral constraints on the configuration space. From such a system we obtain, explicitly, a simple hybrid system

  11. Advanced, Energy-Efficient Hybrid Membrane System for Industrial...

    Broader source: Energy.gov (indexed) [DOE]

    Advanced, Energy- Efficient Hybrid Membrane System for Industrial Water Reuse New Hybrid Membrane System Utilizes Industrial Waste Heat to Power Water Purification Process As...

  12. 2012 Annual Merit Review Results Report - Hybrid Vehicle Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Hybrid Vehicle Systems Technologies 2012 Annual Merit Review Results Report - Hybrid Vehicle Systems Technologies Merit review of DOE Vehicle Technologies research activities...

  13. 2013 Annual Merit Review Results Report - Hybrid Vehicle Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Hybrid Vehicle Systems Technologies 2013 Annual Merit Review Results Report - Hybrid Vehicle Systems Technologies Merit review of DOE Vehicle Technologies research activities...

  14. 2014 Annual Merit Review Results Report - Hybrid Vehicle Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Hybrid Vehicle Systems Technologies 2014 Annual Merit Review Results Report - Hybrid Vehicle Systems Technologies Merit review of DOE Vehicle Technologies research activities...

  15. Advanced Methods Approach to Hybrid Powertrain Systems Optimization...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus Application Advanced Methods Approach to Hybrid Powertrain Systems Optimization of a Transit Bus...

  16. Hybrid coupled models of the tropical Paci c | II ENSO prediction

    E-Print Network [OSTI]

    Hsieh, William

    Hybrid coupled models of the tropical Paci#12;c | II ENSO prediction by Youmin Tang 1 , William W: ytang@cims.nyu.edu #12; Abstract Two hybrid coupled models (HCMs), a dynamical ocean model coupled Introduction Models for ENSO prediction can be categorized into purely statistical models, hybrid coupled

  17. Hybrid systems process mixed wastes

    SciTech Connect (OSTI)

    Chertow, M.R.

    1989-10-01

    Some technologies, developed recently in Europe, combine several processes to separate and reuse materials from solid waste. These plants have in common, generally, that they are reasonably small, have a composting component for the organic portion, and often have a refuse-derived fuel component for combustible waste. Many European communities also have very effective drop-off center programs for recyclables such as bottles and cans. By maintaining the integrity of several different fractions of the waste, there is a less to landfill and less to burn. The importance of these hybrid systems is that they introduce in one plant an approach that encompasses the key concept of today's solid waste planning; recover as much as possible and landfill as little as possible. The plants also introduce various risks, particularly of finding secure markets. There are a number of companies offering various combinations of materials recovery, composting, and waste combustion. Four examples are included: multiple materials recovery and refuse-derived fuel production in Eden Prairie, Minnesota; multiple materials recovery, composting and refuse-derived fuel production in Perugia, Italy; composting, refuse-derived fuel, and gasification in Tolmezzo, Italy; and a front-end system on a mass burning waste-to-energy plant in Neuchatel, Switzerland.

  18. Formal Verification of Hybrid Systems Rajeev Alur

    E-Print Network [OSTI]

    Alur, Rajeev

    , of the system un- der design, and performs extensive analysis with respect to correctness requirements-1-4503-0714-7/11/10 ...$5.00. mathematical model for design of embedded control systems is hybrid systems that combines for dynamical systems. Such models can capture both the controller -- the system under design, and the plant

  19. Reuse of hybrid car power systems

    E-Print Network [OSTI]

    Kirkby, Nicholas (Nicholas J.)

    2015-01-01

    Used hybrid car power systems are inexpensive and capable of tens of kilowatts of power throughput. This paper documents a process for using the second generation Toyota Prius inverter module to drive a three phase permanent ...

  20. Powertrain system for a hybrid electric vehicle

    DOE Patents [OSTI]

    Reed, Jr., Richard G. (Royal Oak, MI); Boberg, Evan S. (Hazel Park, MI); Lawrie, Robert E. (Whitmore Lake, MI); Castaing, Francois J. (Bloomfield Township, MI)

    1999-08-31

    A hybrid electric powertrain system is provided including an electric motor/generator drivingly engaged with the drive shaft of a transmission. The electric is utilized for synchronizing the rotation of the drive shaft with the driven shaft during gear shift operations. In addition, a mild hybrid concept is provided which utilizes a smaller electric motor than typical hybrid powertrain systems. Because the electric motor is drivingly engaged with the drive shaft of the transmission, the electric motor/generator is driven at high speed even when the vehicle speed is low so that the electric motor/generator provides more efficient regeneration.

  1. Powertrain system for a hybrid electric vehicle

    DOE Patents [OSTI]

    Reed, R.G. Jr.; Boberg, E.S.; Lawrie, R.E.; Castaing, F.J.

    1999-08-31

    A hybrid electric powertrain system is provided including an electric motor/generator drivingly engaged with the drive shaft of a transmission. The electric is utilized for synchronizing the rotation of the drive shaft with the driven shaft during gear shift operations. In addition, a mild hybrid concept is provided which utilizes a smaller electric motor than typical hybrid powertrain systems. Because the electric motor is drivingly engaged with the drive shaft of the transmission, the electric motor/generator is driven at high speed even when the vehicle speed is low so that the electric motor/generator provides more efficient regeneration. 34 figs.

  2. Analysis of Hybrid Hydrogen Systems: Final Report

    SciTech Connect (OSTI)

    Dean, J.; Braun, R.; Munoz, D.; Penev, M.; Kinchin, C.

    2010-01-01

    Report on biomass pathways for hydrogen production and how they can be hybridized to support renewable electricity generation. Two hybrid systems were studied in detail for process feasibility and economic performance. The best-performing system was estimated to produce hydrogen at costs ($1.67/kg) within Department of Energy targets ($2.10/kg) for central biomass-derived hydrogen production while also providing value-added energy services to the electric grid.

  3. Hybrid Routhian Reduction of Lagrangian Hybrid Systems Aaron D. Ames and Shankar Sastry

    E-Print Network [OSTI]

    Ames, Aaron

    Hybrid Routhian Reduction of Lagrangian Hybrid Systems Aaron D. Ames and Shankar Sastry Department,sastry}@eecs.berkeley.edu Abstract-- This paper extends Routhian reduction to a hybrid setting, i.e., to systems that display both with unilateral constraints on the set of admissible configurations. This naturally yields the notion of a hybrid

  4. Hybrid Systems with Finite Bisimulations Gerardo Lafferriere1

    E-Print Network [OSTI]

    Pappas, George J.

    Hybrid Systems with Finite Bisimulations Gerardo Lafferriere1 , George J. Pappas2 , and Shankar is one of the main approach- es to hybrid system analysis. Decidability questions for verification algo classes of planar hybrid systems. 1 Introduction Hybrid systems consist of finite state machines

  5. Modeling and Optimization of Hybrid Solar Thermoelectric Systems...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Modeling and Optimization of Hybrid Solar Thermoelectric Systems with Thermosyphons Citation Details In-Document Search Title: Modeling and Optimization of Hybrid...

  6. Manzanita Hybrid Power system Project Final Report

    SciTech Connect (OSTI)

    Trisha Frank

    2005-03-31

    The Manzanita Indian Reservation is located in southeastern San Diego County, California. The Tribe has long recognized that the Reservation has an abundant wind resource that could be commercially utilized to its benefit, and in 1995 the Tribe established the Manzanita Renewable Energy Office. Through the U.S. Department of Energy's Tribal Energy Program the Band received funds to install a hybrid renewable power system to provide electricity to one of the tribal community buildings, the Manzanita Activities Center (MAC building). The project began September 30, 1999 and was completed March 31, 2005. The system was designed and the equipment supplied by Northern Power Systems, Inc, an engineering company with expertise in renewable hybrid system design and development. Personnel of the National Renewable Energy Laboratory provided technical assistance in system design, and continued to provide technical assistance in system monitoring. The grid-connected renewable hybrid wind/photovoltaic system provides a demonstration of a solar/wind energy hybrid power-generating project on Manzanita Tribal land. During the system design phase, the National Renewable Energy Lab estimated that the wind turbine is expected to produce 10,000-kilowatt hours per year and the solar array 2,000-kilowatt hours per year. The hybrid system was designed to provide approximately 80 percent of the electricity used annually in the MAC building. The project proposed to demonstrate that this kind of a system design would provide highly reliable renewable power for community uses.

  7. Approximate bisimulation for a class of stochastic hybrid systems

    E-Print Network [OSTI]

    Pappas, George J.

    , target tracking, robotics, and power systems [35]. The field of stochastic hybrid systems is a veryApproximate bisimulation for a class of stochastic hybrid systems (Invited Paper) Agung Julius of stochastic hybrid systems, namely, the jump linear stochastic systems (JLSS). The idea is based

  8. Control system for a hybrid powertrain system

    DOE Patents [OSTI]

    Naqvi, Ali K.; Demirovic, Besim; Gupta, Pinaki; Kaminsky, Lawrence A.

    2014-09-09

    A vehicle includes a powertrain with an engine, first and second torque machines, and a hybrid transmission. A method for operating the vehicle includes operating the engine in an unfueled state, releasing an off-going clutch which when engaged effects operation of the hybrid transmission in a first continuously variable mode, and applying a friction braking torque to a wheel of the vehicle to compensate for an increase in an output torque of the hybrid transmission resulting from releasing the off-going clutch. Subsequent to releasing the off-going clutch, an oncoming clutch which when engaged effects operation of the hybrid transmission in a second continuously variable mode is synchronized. Subsequent to synchronization of the oncoming clutch, the oncoming clutch is engaged.

  9. Hybrid Molten Salt Reactor (HMSR) System Study

    SciTech Connect (OSTI)

    Woolley, Robert D; Miller, Laurence F

    2014-04-01

    Can the hybrid system combination of (1) a critical fission Molten Salt Reactor (MSR) having a thermal spectrum and a high Conversion Ratio (CR) with (2) an external source of high energy neutrons provide an attractive solution to the world's expanding demand for energy? The present study indicates the answer is an emphatic yes.

  10. Hybrid Energy System Modeling in Modelica

    SciTech Connect (OSTI)

    William R. Binder; Christiaan J. J. Paredis; Humberto E. Garcia

    2014-03-01

    In this paper, a Hybrid Energy System (HES) configuration is modeled in Modelica. Hybrid Energy Systems (HES) have as their defining characteristic the use of one or more energy inputs, combined with the potential for multiple energy outputs. Compared to traditional energy systems, HES provide additional operational flexibility so that high variability in both energy production and consumption levels can be absorbed more effectively. This is particularly important when including renewable energy sources, whose output levels are inherently variable, determined by nature. The specific HES configuration modeled in this paper include two energy inputs: a nuclear plant, and a series of wind turbines. In addition, the system produces two energy outputs: electricity and synthetic fuel. The models are verified through simulations of the individual components, and the system as a whole. The simulations are performed for a range of component sizes, operating conditions, and control schemes.

  11. Verifying Hybrid Systems Modeled as Timed Automata: A Case Study?

    E-Print Network [OSTI]

    -Vaandrager timed automata model, of the Steam Boiler Controller problem, a hybrid systems benchmark. This pa- per

  12. Hybrid Dynamical Systems, or HDS: The Ultimate Switching Experience

    E-Print Network [OSTI]

    Branicky, Michael S.

    Hybrid Dynamical Systems, or HDS: The Ultimate Switching Experience Michael S. Branicky Laboratory concentrated on formalizing the notion of a hybrid system as switching among an indexed collection of dynamical give a quick overview of the area of hybrid systems. I also briefly review the formal definition

  13. Hybrid Systems: Review and Recent Progress Panos J. Antsaklis

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    Hybrid Systems: Review and Recent Progress Panos J. Antsaklis Department of Electrical Engineering of this volume focuses on hybrid dynamical systems, an area of research that has developed as a result communities. This chapter provides a broad-based introduction to hybrid systems and discusses a number

  14. Optimal Control of Switched Hybrid Systems: A Brief Survey

    E-Print Network [OSTI]

    Antsaklis, Panos

    Optimal Control of Switched Hybrid Systems: A Brief Survey Technical Report of the ISIS Group;1 Optimal Control of Switched Hybrid Systems: A Brief Survey Feng Zhu and Panos J. Antsaklis Department a few. The problem of determining optimal control laws for hybrid systems and in particular for switched

  15. Nonlinear Hybrid Dynamical Systems: Modeling, Optimal Control, and Applications

    E-Print Network [OSTI]

    Stryk, Oskar von

    Nonlinear Hybrid Dynamical Systems: Modeling, Optimal Control, and Applications Martin Buss1¨unchen, Germany Abstract. Nonlinear hybrid dynamical systems are the main focus of this paper. A modeling Introduction The recent interest in nonlinear hybrid dynamical systems has forced the merger of two very

  16. APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO

    E-Print Network [OSTI]

    APPLICATIONS OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS TO BUILDINGS AND BRIDGE DECKS. By MAHADEVAN Chapter Page 1. Introduction 1.1. Overview of hybrid ground source heat pump systems 1.2. Literature review 1.3. Thesis objective and scope 2. Optimal sizing of hybrid ground source heat pump system

  17. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01

    Common Passive and Hybrid Heating Cooling Systems Michael].THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

  18. Dynamics in hybrid complex systems of switches and oscillators

    E-Print Network [OSTI]

    Dane Taylor; Elana J. Fertig; Juan G. Restrepo

    2013-08-09

    While considerable progress has been made in the analysis of large systems containing a single type of coupled dynamical component (e.g., coupled oscillators or coupled switches), systems containing diverse components (e.g., both oscillators and switches) have received much less attention. We analyze large, hybrid systems of interconnected Kuramoto oscillators and Hopfield switches with positive feedback. In this system, oscillator synchronization promotes switches to turn on. In turn, when switches turn on they enhance the synchrony of the oscillators to which they are coupled. Depending on the choice of parameters, we find theoretically coexisting stable solutions with either (i) incoherent oscillators and all switches permanently off, (ii) synchronized oscillators and all switches permanently on, or (iii) synchronized oscillators and switches that periodically alternate between the on and off states. Numerical experiments confirm these predictions. We discuss how transitions between these steady state solutions can be onset deterministically through dynamic bifurcations or spontaneously due to finite-size fluctuations.

  19. Benefits of battery-uItracapacitor hybrid energy storage systems

    E-Print Network [OSTI]

    Smith, Ian C., S.M. (Ian Charles). Massachusetts Institute of Technology

    2012-01-01

    This thesis explores the benefits of battery and battery-ultracapacitor hybrid energy storage systems (ESSs) in pulsed-load applications. It investigates and quantifies the benefits of the hybrid ESS over its battery-only ...

  20. Reachability Analysis of Stochastic Hybrid Systems: A Biodiesel Production System

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    Reachability Analysis of Stochastic Hybrid Systems: A Biodiesel Production System Derek Riley problem because it provides a formal framework to analyze complex systems. Biodiesel production is a realistic biochemical process that can be modeled and analyzed using SHS methods. Analysis of a biodiesel

  1. HybridStore: An Efficient Data Management System for Hybrid Flash-Based Sensor Devices

    E-Print Network [OSTI]

    Baras, John S.

    HybridStore: An Efficient Data Management System for Hybrid Flash-Based Sensor Devices Baobing WangStore, a novel efficient resource- aware data management system for flash-based sensor devices to store and query, designing an efficient resource- aware data management system for flash-based sensor devices is a very

  2. Advanced hybrid vehicle propulsion system study

    SciTech Connect (OSTI)

    Schwarz, R.

    1982-05-01

    Results of a study of an advanced heat engine/electric automotive hybrid propulsion system are presented. The system uses a rotary stratified charge engine and an ac motor/controller in a parallel hybrid configuration. The three tasks of the study were (1) parametric studies involving five different vehicle types, (2) design trade-off studies to determine the influence of various vehicle and propulsion system parameters on system performance fuel economy and cost, and (3) a conceptual design establishing feasibility at the selected approach. Energy consumption for the selected system was .034 l/km (61.3 mpg) for the heat engine and .221 kWh/km (.356 kWh/mi) for the electric power system over a modified J227a schedule D driving cycle. Life cycle costs were 7.13 cents/km (11.5 cents/mi) at $2/gal gasoline and 7 cents/kWh electricity for 160,000 km (100,000 mi) life.

  3. Hybrid electric vehicle power management system

    DOE Patents [OSTI]

    Bissontz, Jay E.

    2015-08-25

    Level voltage levels/states of charge are maintained among a plurality of high voltage DC electrical storage devices/traction battery packs that are arrayed in series to support operation of a hybrid electric vehicle drive train. Each high voltage DC electrical storage device supports a high voltage power bus, to which at least one controllable load is connected, and at least a first lower voltage level electrical distribution system. The rate of power transfer from the high voltage DC electrical storage devices to the at least first lower voltage electrical distribution system is controlled by DC-DC converters.

  4. Hybrid quantum-classical models as constrained quantum systems

    E-Print Network [OSTI]

    M. Radonjic; S. Prvanovic; N. Buric

    2012-06-07

    Constrained Hamiltonian description of the classical limit is utilized in order to derive consistent dynamical equations for hybrid quantum-classical systems. Starting with a compound quantum system in the Hamiltonian formulation conditions for classical behavior are imposed on one of its subsystems and the corresponding hybrid dynamical equations are derived. The presented formalism suggests that the hybrid systems have properties that are not exhausted by those of quantum and classical systems.

  5. Modular hybrid plasma reactor and related systems and methods...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Patent Search Success Stories News Events Find More Like This Return to Search Modular hybrid plasma reactor and related systems and methods United States Patent Patent Number:...

  6. Modular hybrid plasma reactor and related systems and methods...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (27) Visual Patent Search Success Stories News Events Return to Search Modular hybrid plasma reactor and related systems and methods United States Patent Application ***...

  7. Nuclear Hybrid Energy Systems: Challenges and Opportunities

    SciTech Connect (OSTI)

    P. Sabharwall; S.B. Sitton; S.J. Yoon; C. Stoots

    2014-07-01

    With growing demand of energy and costs of the fossil fuels, coupled with the environmental concerns have resulted in an increased interest in alternative energy sources. Nuclear hybrid energy systems (NHES) are being considered which incorporates renewable energy sources such as solar and wind energy combined with nuclear reactor and energy storage to meet the peak hours demand imposed on the grid, along with providing process heat for other potential industrial applications. This concept could potentially satisfy various energy demands and improve reliability, robustness and resilience for the entire system as a whole, along with economic and net efficiency gains. This paper provides a brief understanding of potential NHES system and architecture along with the challenges

  8. Interchange Formats for Hybrid Systems: Review and Proposal

    E-Print Network [OSTI]

    Carloni, Luca

    and formal verification) and synthesis of hybrid systems, and we give a recommendation for an interchange to be powerful design representations for system- level design in particular for embedded controllers. The term: one would prefer to define a common model of computation for hybrid systems that should be used

  9. AN INTRODUCTION TO HYBRID SYSTEM MODELING, ANALYSIS, AND CONTROL

    E-Print Network [OSTI]

    Pappas, George J.

    AN INTRODUCTION TO HYBRID SYSTEM MODELING, ANALYSIS, AND CONTROL JOHN LYGEROS, GEORGE PAPPAS as models of large scale systems. We provide an overview of modeling, analysis, and controller synthesis automatically. Finally, we review a method for designing controllers for hybrid systems with reachability

  10. Lyapunov-Like Conditions for the Existence of Zeno Behavior in Hybrid and Lagrangian Hybrid Systems

    E-Print Network [OSTI]

    Ames, Aaron

    Lyapunov-Like Conditions for the Existence of Zeno Behavior in Hybrid and Lagrangian Hybrid Systems Andrew Lamperski and Aaron D. Ames Abstract-- Lyapunov-like conditions that utilize generaliza- tions configuration space, we utilize our Lyapunov-like conditions to obtain easily verifiable necessary

  11. Comparison of Hybrid Systems and Fluid Stochastic Petri Nets \\Lambda

    E-Print Network [OSTI]

    Tuffin, Bruno

    Comparison of Hybrid Systems and Fluid Stochastic Petri Nets \\Lambda Bruno Tuffin , Dong S. Chen Engineering Duke University, Durham, NC 27708­0291, U.S.A. Abstract. Hybrid Systems are models of interacting digital and continuous devices with applications in the control of aircraft, computers, or modern cars

  12. Performance Analysis of Manufacturing Systems Under Hybrid Control Policies

    E-Print Network [OSTI]

    Gershwin, Stanley B.

    is widely used in practice, and is seen as the \\state of the art" in lean manufacturing. We present severalPerformance Analysis of Manufacturing Systems Under Hybrid Control Policies by Asbjoern M. Bonvik of Manufacturing Systems Under Hybrid Control Policies by Asbjoern M. Bonvik Submitted to the Department

  13. Charge Allocation for Hybrid Electrical Energy Storage Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    Charge Allocation for Hybrid Electrical Energy Storage Systems Qing Xie1, Yanzhi Wang1, Younghyun Hybrid electrical energy storage (HEES) systems, composed of multiple banks of heterogeneous electrical to efficiently store and retrieve electrical energy while attaining performance metrics that are close

  14. Networked Architecture for Hybrid Electrical Energy Storage Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    Networked Architecture for Hybrid Electrical Energy Storage Systems Younghyun Kim, Sangyoung Park, pedram}@usc.edu ABSTRACT A hybrid electrical energy storage (HEES) system that consists of multiple, heterogeneous electrical energy storage (EES) elements is a promising solution to achieve a cost-effective EES

  15. Abstraction and Counterexample-Guided Refinement in Model Checking of Hybrid Systems

    E-Print Network [OSTI]

    : Formal Verification, Abstraction, Model Checking, Hybrid Systems, Refinement, Counterexamples #12Abstraction and Counterexample-Guided Refinement in Model Checking of Hybrid Systems Edmund Clarke a counterexample generated by the model checker. For hybrid systems, analysis of the counterexample requires

  16. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01

    Passive and Hybrid Heating Cooling Systems Michael]. Holtz,PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS Michael J.of passive and hybrid space heating and cooling systems are

  17. Nuclear Hybrid Energy System Modeling: RELAP5 Dynamic Coupling Capabilities

    SciTech Connect (OSTI)

    Piyush Sabharwall; Nolan Anderson; Haihua Zhao; Shannon Bragg-Sitton; George Mesina

    2012-09-01

    The nuclear hybrid energy systems (NHES) research team is currently developing a dynamic simulation of an integrated hybrid energy system. A detailed simulation of proposed NHES architectures will allow initial computational demonstration of a tightly coupled NHES to identify key reactor subsystem requirements, identify candidate reactor technologies for a hybrid system, and identify key challenges to operation of the coupled system. This work will provide a baseline for later coupling of design-specific reactor models through industry collaboration. The modeling capability addressed in this report focuses on the reactor subsystem simulation.

  18. Proton corebeam system in the expanding solar wind: Hybrid simulations

    E-Print Network [OSTI]

    California at Berkeley, University of

    Proton corebeam system in the expanding solar wind: Hybrid simulations Petr Hellinger1,2 and Pavel 9 November 2011. [1] Results of a twodimensional hybrid expanding box simulation of a proton to a decrease of the ratio between the proton perpendicular and parallel temperatures as well as to an increase

  19. AT GUANTANAMO BAY: A HYBRID WIND-DIESEL SYSTEM

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND POWER AT GUANTANAMO BAY: A HYBRID WIND-DIESEL SYSTEM FOR THE US NAVY AT GUANTANAMO NAVAL BASE Laboratory and are actively developing what will be the world's largest wind-diesel hybrid electric plant. The pending installation of four 950-kW wind turbines to supplement the 22.8 MW diesel electricity plant

  20. Battery control system for hybrid vehicle and method for controlling a hybrid vehicle battery

    DOE Patents [OSTI]

    Bockelmann, Thomas R. (Battle Creek, MI); Hope, Mark E. (Marshall, MI); Zou, Zhanjiang (Battle Creek, MI); Kang, Xiaosong (Battle Creek, MI)

    2009-02-10

    A battery control system for hybrid vehicle includes a hybrid powertrain battery, a vehicle accessory battery, and a prime mover driven generator adapted to charge the vehicle accessory battery. A detecting arrangement is configured to monitor the vehicle accessory battery's state of charge. A controller is configured to activate the prime mover to drive the generator and recharge the vehicle accessory battery in response to the vehicle accessory battery's state of charge falling below a first predetermined level, or transfer electrical power from the hybrid powertrain battery to the vehicle accessory battery in response to the vehicle accessory battery's state of charge falling below a second predetermined level. The invention further includes a method for controlling a hybrid vehicle powertrain system.

  1. Hybrid vehicle system studies and optimized hydrogen engine design

    SciTech Connect (OSTI)

    Smith, J.R.; Aceves, S.

    1995-04-26

    We have done system studies of series hydrogen hybrid automobiles that approach the PNGV design goal of 34 km/liter (80 mpg), for 384 km (240 mi) and 608 km (380 mi) ranges. Our results indicate that such a vehicle appears feasible using an optimized hydrogen engine. We have evaluated the impact of various on-board storage options on fuel economy. Experiments in an available engine at the Sandia CRF demonstrated NO{sub x} emissions of 10 to 20 ppM at an equivalence ratio of 0.4, rising to about 500 ppm at 0.5 equivalence ratio using neat hydrogen. Hybrid simulation studies indicate that exhaust NO{sub x} concentrations must be less than 180 ppM to meet the 0.2 g/mile ULEV or Federal Tier II emissions regulations. LLNL has designed and fabricated a first generation optimized hydrogen engine head for use on an existing Onan engine. This head features 15:1 compression ratio, dual ignition, water cooling, two valves and open quiescent combustion chamber to minimize heat transfer losses. Initial testing shows promise of achieving an indicated efficiency of nearly 50% and emissions of less than 100 ppM NO{sub x}. Hydrocarbons and CO are to be measured, but are expected to be very low since their only source is engine lubricating oil. A successful friction reduction program on the Onan engine should result in a brake thermal efficiency of about 42% compared to today`s gasoline engines of 32%. Based on system studies requirements, the next generation engine will be about 2 liter displacement and is projected to achieve 46% brake thermal efficiency with outputs of 15 kW for cruise and 40 kW for hill climb.

  2. Refinement of Hybrid Systems from Formal Models to Design Languages

    E-Print Network [OSTI]

    Cengarle, María Victoria

    of high-level design of a control system, it is highly desirable to use representations that accuratelyRefinement of Hybrid Systems from Formal Models to Design Languages Jan Romberg Systems & Software Abstract System-level design for discrete-continuous embedded systems is a complex and error- prone task

  3. Control system design for a parallel hybrid electric vehicle 

    E-Print Network [OSTI]

    Buntin, David Leighton

    1994-01-01

    This thesis addresses the design of control systems for a parallel hybrid electric drive train which is an alternative to conventional passenger vehicles. The principle components of the drive train are a small internal combustion engine...

  4. Bayesian regularisation methods in a hybrid MLP-HMM system

    E-Print Network [OSTI]

    Renals, Steve; MacKay, David

    1993-01-01

    We have applied Bayesian regularisation methods to multi-layer percepuon (MLP) training in the context of a hybrid MLP-HMM (hidden Markov model) continuous speech recognition system. The Bayesian framework adopted here ...

  5. The assessment of battery-ultracapacitor hybrid energy storage systems

    E-Print Network [OSTI]

    He, Yiou

    2014-01-01

    Battery-ultracapacitors hybrid energy storage systems (ESS) could combine the high power density and high life cycle of ultracapacitors with the high energy density of batteries, which forms a promising energy storage ...

  6. IDetachable, Human-Rated, Ablative Environmentally Compliant TPSLunar Surface Systems 2008 Phase II

    E-Print Network [OSTI]

    Systems 2008 Phase II Proposal X8.01-8631 Lightweight Hybrid Ablator Incorporating Aerogel-Filled Open skeleton filled with a high temperature nanoscale aerogel insulator. Structural integrity and high insulation behavior have been demonstrated when used in combination with a non-ablating, coated carbon

  7. Hybrid Vapor Compression Adsorption System: Thermal Storage Using Hybrid Vapor Compression Adsorption System

    SciTech Connect (OSTI)

    2012-01-04

    HEATS Project: UTRC is developing a new climate-control system for EVs that uses a hybrid vapor compression adsorption system with thermal energy storage. The targeted, closed system will use energy during the battery-charging step to recharge the thermal storage, and it will use minimal power to provide cooling or heating to the cabin during a drive cycle. The team will use a unique approach of absorbing a refrigerant on a metal salt, which will create a lightweight, high-energy-density refrigerant. This unique working pair can operate indefinitely as a traditional vapor compression heat pump using electrical energy, if desired. The project will deliver a hot-and-cold battery that provides comfort to the passengers using minimal power, substantially extending the driving range of EVs.

  8. Optimal Controllers for Hybrid Systems: Stability and Piecewise Linear Explicit Form

    E-Print Network [OSTI]

    Sontag, Eduardo

    of the heat exchange system [16] shows the potential of the method. Keywords: Hybrid systems, model predictiveOptimal Controllers for Hybrid Systems: Stability and Piecewise Linear Explicit Form A. Bemporad for hybrid sys- tems and investigate conditions for closed-loop stabil- ity. Hybrid systems are modeled

  9. Hybrid Statistical Model Checking Technique for Reliable Safety Critical Systems

    E-Print Network [OSTI]

    @cs.kaist.ac.kr Abstract--Reliability of safety critical systems such as nuclear power plants and automobiles has become1 Hybrid Statistical Model Checking Technique for Reliable Safety Critical Systems Youngjoo Kim a significant issue to our society. As more computing systems are utilized in these safety critical systems

  10. Energy-Efficient Building HVAC Control Using Hybrid System LBMPC

    E-Print Network [OSTI]

    Aswani, Anil; Taneja, Jay; Krioukov, Andrew; Culler, David; Tomlin, Claire

    2012-01-01

    Improving the energy-efficiency of heating, ventilation, and air-conditioning (HVAC) systems has the potential to realize large economic and societal benefits. This paper concerns the system identification of a hybrid system model of a building-wide HVAC system and its subsequent control using a hybrid system formulation of learning-based model predictive control (LBMPC). Here, the learning refers to model updates to the hybrid system model that incorporate the heating effects due to occupancy, solar effects, outside air temperature (OAT), and equipment, in addition to integrator dynamics inherently present in low-level control. Though we make significant modeling simplifications, our corresponding controller that uses this model is able to experimentally achieve a large reduction in energy usage without any degradations in occupant comfort. It is in this way that we justify the modeling simplifications that we have made. We conclude by presenting results from experiments on our building HVAC testbed, which s...

  11. The simulation system SIMPLEX II 

    E-Print Network [OSTI]

    Schinagl, Josef Georg

    1995-01-01

    Scientists must model increasingly complex nonlinear systems in their attempt to solve real world problems. Especially when dealing with nonlinear systems, it is sometimes impossible to find a solution analytically. In ...

  12. Introduction to the Special Issue on Hybrid Systems Hybrid systems contain two distinct types of components, subsystems with continuous dynamics and subsystems

    E-Print Network [OSTI]

    Antsaklis, Panos

    to be analyzed and understood. Hybrid systems are central in the analysis and design of intelligent control the dynamic behavior of such hybrid systems. In this way it will be possible to develop control strategies. In recent years, the widespread use of digital machines has made hybrid systems very common. Whenever

  13. Reachability Analysis of a Biodiesel Production System Using Stochastic Hybrid Systems

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    Reachability Analysis of a Biodiesel Production System Using Stochastic Hybrid Systems Derek Riley defines the creation of biodiesel from soybean oil and methanol. Modeling and analyzing the biodiesel. In this paper we model a biodiesel production system as a stochastic hybrid system, and we present

  14. Hybrid Electric Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12,ExecutiveFinancingR Walls - BuildingofDepartmentHybird Geothemal-SolarHybrid

  15. Hybrid energy system cost analysis: San Nicolas Island, California

    SciTech Connect (OSTI)

    Olsen, T.L.; McKenna, E.

    1996-07-01

    This report analyzes the local wind resource and evaluates the costs and benefits of supplementing the current diesel-powered energy system on San Nicolas Island, California (SNI), with wind turbines. In Section 2.0 the SNI site, naval operations, and current energy system are described, as are the data collection and analysis procedures. Section 3.0 summarizes the wind resource data and analyses that were presented in NREL/TP 442-20231. Sections 4.0 and 5.0 present the conceptual design and cost analysis of a hybrid wind and diesel energy system on SNI, with conclusions following in Section 6. Appendix A presents summary pages of the hybrid system spreadsheet model, and Appendix B contains input and output files for the HYBRID2 program.

  16. Hydrogen atom as a quantum-classical hybrid system

    E-Print Network [OSTI]

    Fei Zhan; Biao Wu

    2013-02-15

    Hydrogen atom is studied as a quantum-classical hybrid system, where the proton is treated as a classical object while the electron is regarded as a quantum object. We use a well known mean-field approach to describe this hybrid hydrogen atom; the resulting dynamics for the electron and the proton is compared to their full quantum dynamics. The electron dynamics in the hybrid description is found to be only marginally different from its full quantum counterpart. The situation is very different for the proton: in the hybrid description, the proton behaves like a free particle; in the fully quantum description, the wave packet center of the proton orbits around the center of mass. Furthermore, we find that the failure to describe the proton dynamics properly can be regarded as a manifestation of the fact that there is no conservation of momentum in the mean-field hybrid approach. We expect that such a failure is a common feature for all existing approaches for quantum-classical hybrid systems of Born-Oppenheimer type.

  17. PAMPA II Advanced Charting System 

    E-Print Network [OSTI]

    Inbarajan, Prabhu Anand

    2004-09-30

    Project Management is the primary key to successful software development. In 1995 Caper Jones stated that the failure or cancellation rate of large software systems was over 20% in his article on patterns of large software ...

  18. The HYCOM (HYbrid Coordinate Ocean Model) data assimilative system

    E-Print Network [OSTI]

    Carolina, Rutgers, U. of South Florida, Fugro- GEOS, ROFFS, Orbimage, Shell, ExxonMobil. 0924-7963/$ - seeThe HYCOM (HYbrid Coordinate Ocean Model) data assimilative system Eric P. Chassignet a,, Harley E and basin-scale ocean hindcast, nowcast, and prediction system in the context of the Global Ocean Data

  19. Aircraft AC Generators: Hybrid System Modeling and Simulation

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    generator, phase-domain model, synchronous AC generator. I. INTRODUCTION The Integrated Drive Generator (IDG1 Aircraft AC Generators: Hybrid System Modeling and Simulation Ashraf Tantawy, Student Member--Integrated Drive Generators (IDGs) are the main source of electrical power for a number of critical systems

  20. Luminescence properties of the hybrid Si-Ni nanoparticles system

    E-Print Network [OSTI]

    Lalayan, A A; Movsesyan, H A

    2015-01-01

    The luminescence properties of the colloidal hybrid Si - Ni nanoparticles system fabricated in the pure water by pulsed laser ablation is considered. The red-shifted photoluminescence of this system because of the Stark effect in the Coulomb field of the charged Ni nanoparticles has been registered in the blue range of the spectrum.

  1. Hybrid Braking System for Non-Drive Axles | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Braking System for Non-Drive Axles Hybrid Braking System for Non-Drive Axles A hybrid braking system is designed to conserve diesel fuel (or alternative fuels) by using...

  2. Dynamic Reconfiguration of Photovoltaic Energy Harvesting System in Hybrid Electric Vehicles

    E-Print Network [OSTI]

    Pedram, Massoud

    Dynamic Reconfiguration of Photovoltaic Energy Harvesting System in Hybrid Electric Vehicles Yanzhi, xuelin, pedram}@usc.edu, 2 {naehyuck}@elpl.snu.ac.kr ABSTRACT Photovoltaic (PV) energy harvesting system. Keywords Photovoltaic System, Hybrid Electric Vehicle, Photovoltaic Array Reconfiguration, Dynamic

  3. Project Assessment and Reporting System (PARS II) | Department...

    Energy Savers [EERE]

    Welcome to PARS II PARS II is the Department's official "System of Record" for capital asset project performance information. Because PARS II uses the same data as maintained in...

  4. Hydraulic Hybrid Systems | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNewTexas: EnergyHunterdonHutto,Fuel Cell Corporation JumpHybrid

  5. hybrid vehicle systems | netl.doe.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLosThe 26th AnnualHistory Over 100 Years5/04 |3 The Retrieval ofHybrid

  6. Hybrid sodium heat pipe receivers for dish/Stirling systems

    SciTech Connect (OSTI)

    Laing, D.; Reusch, M.

    1997-12-31

    The design of a hybrid solar/gas heat pipe receiver for the SBP 9 kW dish/Stirling system using a United Stirling AB V160 Stirling engine and the results of on-sun testing in alternative and parallel mode will be reported. The receiver is designed to transfer a thermal power of 35 kW. The heat pipe operates at around 800 C, working fluid is sodium. Operational options are solar-only, gas augmented and gas-only mode. Also the design of a second generation hybrid heat pipe receiver currently developed under a EU-funded project, based on the experience gained with the first hybrid receiver, will be reported. This receiver is designed for the improved SPB/L. and C.-10 kW dish/Stirling system with the reworked SOLO V161 Stirling engine.

  7. Solar Central Receiver Hybrid Power Systems sodium-cooled receiver concept. Final report. Volume III. Appendices

    SciTech Connect (OSTI)

    None

    1980-01-01

    The overall, long term objective of the Solar Central Receiver Hybrid Power System is to identify, characterize, and ultimately demonstrate the viability and cost effectiveness of solar/fossil, steam Rankine cycle, hybrid power systems that: (1) consist of a combined solar central receiver energy source and a nonsolar energy source at a single, common site, (2) may operate in the base, intermediate, and peaking capacity modes, (3) produce the rated output independent of variations in solar insolation, (4) provide a significant savings (50% or more) in fuel consumpton, and (5) produce power at the minimum possible cost in mills/kWh. It is essential that these hybrid concepts be technically feasible and economically competitive with other systems in the near to mid-term time period (1985-1990) on a commercial scale. The program objective for Phase I is to identify and conceptually characterize solar/fossil steam Rankine cycle, commercial-scale, power plant systems that are economically viable and technically feasible. This volume contains appendices to the conceptual design and systems analysis studies gien in Volume II, Books 1 and 2. (WHK)

  8. Hybrid two fuel system nozzle with a bypass connecting the two fuel systems

    DOE Patents [OSTI]

    Varatharajan, Balachandar (Cincinnati, OH); Ziminsky, Willy Steve (Simpsonville, SC); Yilmaz, Ertan (Albany, NY); Lacy, Benjamin (Greer, SC); Zuo, Baifang (Simpsonville, SC); York, William David (Greer, SC)

    2012-05-29

    A hybrid fuel combustion nozzle for use with natural gas, syngas, or other types of fuels. The hybrid fuel combustion nozzle may include a natural gas system with a number of swozzle vanes and a syngas system with a number of co-annular fuel tubes.

  9. Approximate model checking of stochastic hybrid systems , J.-P. Katoen

    E-Print Network [OSTI]

    Abate, Alessandro

    -room heating system. 1 Introduction Stochastic hybrid systems are a broad and widely applicable classApproximate model checking of stochastic hybrid systems A. Abate , J.-P. Katoen , J. Lygeros , and M. Prandini§ Abstract A method for approximate model checking of stochastic hybrid systems

  10. Development of Integrated Motor Assist Hybrid System: Development of the 'Insight', a Personal Hybrid Coupe

    SciTech Connect (OSTI)

    Kaoru Aoki; Shigetaka Kuroda; Shigemasa Kajiwara; Hiromitsu Sato; Yoshio Yamamoto

    2000-06-19

    This paper presents the technical approach used to design and develop the powerplant for the Honda Insight, a new motor assist hybrid vehicle with an overall development objective of just half the fuel consumption of the current Civic over a wide range of driving conditions. Fuel consumption of 35km/L (Japanese 10-15 mode), and 3.4L/100km (98/69/EC) was realized. To achieve this, a new Integrated Motor Assist (IMA) hybrid power plant system was developed, incorporating many new technologies for packaging and integrating the motor assist system and for improving engine thermal efficiency. This was developed in combination with a new lightweight aluminum body with low aerodynamic resistance. Environmental performance goals also included the simultaneous achievement of low emissions (half the Japanese year 2000 standards, and half the EU2000 standards), high efficiency, and recyclability. Full consideration was also given to key consumer attributes, including crash safety performance, handling, and driving performance.

  11. Laser Inertial Fusion-based Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System

    E-Print Network [OSTI]

    Kramer, Kevin James

    2010-01-01

    of a Hybrid Fusion-Fission Nuclear Energy System by Kevinof a Hybrid Fusion-Fission Nuclear Energy System by Kevinof a Hybrid Fusion-Fission Nuclear Energy System by Kevin

  12. BRNS Workshop Verification of Digital and Hybrid Systems

    E-Print Network [OSTI]

    Shyamasundar, R.K.

    BRNS Workshop Verification of Digital and Hybrid Systems 7­11, January 1999, TIFR, Mumbai Advisory.K. Shyamasundar (TIFR, Chairman) K.C. Bhattacharjee (VSSC, Trivandrum) U. Chandra (BARC, Mumbai) V. Chandru (IISc., Bangalore) S.D. Dhodapkar (BARC, Mumbai) K. Karunakar (ADA, Bangalore) P.K. Pandya (TIFR, Mumbai) N. Raja

  13. Hybrid Fuel Cell / Gas Turbine Systems Auxiliary Power Unit

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Hybrid Fuel Cell / Gas Turbine Systems Auxiliary Power Unit Abstract Recent interest in fuel cell fuel cell (SOFC) and fuel processor models have been developed and incorporated into the Numerical performance with experimental data is presented to demonstrate model validity. Introduction Fuel cell

  14. Borazine-boron nitride hybrid hydrogen storage system

    DOE Patents [OSTI]

    Narula, Chaitanya K. (Knoxville, TN) [Knoxville, TN; Simonson, J. Michael (Knoxville, TN) [Knoxville, TN; Maya, Leon (Knoxville, TN) [Knoxville, TN; Paine, Robert T. (Albuquerque, NM) [Albuquerque, NM

    2008-04-22

    A hybrid hydrogen storage composition includes a first phase and a second phase adsorbed on the first phase, the first phase including BN for storing hydrogen by physisorption and the second phase including a borazane-borazine system for storing hydrogen in combined form as a hydride.

  15. Method and apparatus for controlling hybrid powertrain system in response to engine temperature

    DOE Patents [OSTI]

    Martini, Ryan D; Spohn, Brian L; Lehmen, Allen J; Cerbolles, Teresa L

    2014-10-07

    A method for controlling a hybrid powertrain system including an internal combustion engine includes controlling operation of the hybrid powertrain system in response to a preferred minimum coolant temperature trajectory for the internal combustion engine.

  16. SOLID OXIDE FUEL CELL HYBRID SYSTEM FOR DISTRIBUTED POWER GENERATION

    SciTech Connect (OSTI)

    Kurt Montgomery; Nguyen Minh

    2003-08-01

    This report summarizes the work performed by Honeywell during the October 2001 to December 2001 reporting period under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. The main objective of this project is to develop and demonstrate the feasibility of a highly efficient hybrid system integrating a planar Solid Oxide Fuel Cell (SOFC) and a turbogenerator. The conceptual and demonstration system designs were proposed and analyzed, and these systems have been modeled in Aspen Plus. Work has also started on the assembly of dynamic component models and the development of the top-level controls requirements for the system. SOFC stacks have been fabricated and performance mapping initiated.

  17. Interchange Format for Hybrid Systems: Abstract Semantics

    E-Print Network [OSTI]

    Carloni, Luca

    used by the algorithms. Modelica, for instance, pro- vides a language for describing systems in terms

  18. Energy Storage System Considerations for Grid-Charged Hybrid Electric Vehicles (Presentation)

    SciTech Connect (OSTI)

    Markel, T.; Simpson, A.

    2005-09-01

    Provides an overview of a study regarding energy storage system considerations for a plug-in hybrid electric vehicle.

  19. Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation

    SciTech Connect (OSTI)

    David Deangelis; Rich Depuy; Debashis Dey; Georgia Karvountzi; Nguyen Minh; Max Peter; Faress Rahman; Pavel Sokolov; Deliang Yang

    2004-09-30

    This report summarizes the work performed by Hybrid Power Generation Systems, LLC (HPGS) during the April to October 2004 reporting period in Task 2.3 (SOFC Scaleup for Hybrid and Fuel Cell Systems) under Cooperative Agreement DE-FC26-01NT40779 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL), entitled ''Solid Oxide Fuel Cell Hybrid System for Distributed Power Generation''. This study analyzes the performance and economics of power generation systems for central power generation application based on Solid Oxide Fuel Cell (SOFC) technology and fueled by natural gas. The main objective of this task is to develop credible scale up strategies for large solid oxide fuel cell-gas turbine systems. System concepts that integrate a SOFC with a gas turbine were developed and analyzed for plant sizes in excess of 20 MW. A 25 MW plant configuration was selected with projected system efficiency of over 65% and a factory cost of under $400/kW. The plant design is modular and can be scaled to both higher and lower plant power ratings. Technology gaps and required engineering development efforts were identified and evaluated.

  20. Nuclear Hybrid Energy Systems: Molten Salt Energy Storage

    SciTech Connect (OSTI)

    P. Sabharwall; M. Green; S.J. Yoon; S.M. Bragg-Sitton; C. Stoots

    2014-07-01

    With growing concerns in the production of reliable energy sources, the next generation in reliable power generation, hybrid energy systems, are being developed to stabilize these growing energy needs. The hybrid energy system incorporates multiple inputs and multiple outputs. The vitality and efficiency of these systems resides in the energy storage application. Energy storage is necessary for grid stabilizing and storing the overproduction of energy to meet peak demands of energy at the time of need. With high thermal energy production of the primary nuclear heat generation source, molten salt energy storage is an intriguing option because of its distinct properties. This paper will discuss the different energy storage options with the criteria for efficient energy storage set forth, and will primarily focus on different molten salt energy storage system options through a thermodynamic analysis

  1. Battery control system for hybrid vehicle and method for controlling a hybrid vehicle battery

    DOE Patents [OSTI]

    Bockelmann, Thomas R. (Battle Creek, MI); Beaty, Kevin D. (Kalamazoo, MI); Zou, Zhanijang (Battle Creek, MI); Kang, Xiaosong (Battle Creek, MI)

    2009-07-21

    A battery control system for controlling a state of charge of a hybrid vehicle battery includes a detecting arrangement for determining a vehicle operating state or an intended vehicle operating state and a controller for setting a target state of charge level of the battery based on the vehicle operating state or the intended vehicle operating state. The controller is operable to set a target state of charge level at a first level during a mobile vehicle operating state and at a second level during a stationary vehicle operating state or in anticipation of the vehicle operating in the stationary vehicle operating state. The invention further includes a method for controlling a state of charge of a hybrid vehicle battery.

  2. ENERGY MODELING OF A LEAD-ACID BATTERY WITHIN HYBRID WIND / PHOTOVOLTAIC SYSTEMS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ENERGY MODELING OF A LEAD-ACID BATTERY WITHIN HYBRID WIND / PHOTOVOLTAIC SYSTEMS O. GERGAUD, G Abstract: Within the scope of full-scale energy modeling of a hybrid wind / photovoltaic system coupled-power hybrid wind/photovoltaic production system (20 ASE modules for a 2- kW polycrystalline silicon peak

  3. A methodology for optimal sizing of autonomous hybrid PV/wind system

    E-Print Network [OSTI]

    Boyer, Edmond

    A methodology for optimal sizing of autonomous hybrid PV/wind system S. Diaf 1* , D. Diaf2 , M paper presents a methodology to perform the optimal sizing of an autonomous hybrid PV/wind system system reliability requirements, with the lowest value of levelised cost of energy. Modelling a hybrid PV/wind

  4. Optimizing a Hybrid Energy Storage System for a Virtual Power Plant for Improved Wind Power

    E-Print Network [OSTI]

    Teodorescu, Remus

    Optimizing a Hybrid Energy Storage System for a Virtual Power Plant for Improved Wind Power approach to find two optimum energy storages (ESs) to build a hybrid system which is part of a virtual power plant. In this paper it means the combination of the hybrid energy storage system and wind power

  5. Abstraction and CounterexampleGuided Refinement in Model Checking of Hybrid Systems

    E-Print Network [OSTI]

    : Formal Verification, Abstraction, Model Checking, Hybrid Systems, Refinement, Counterexamples #12; 1Abstraction and Counterexample­Guided Refinement in Model Checking of Hybrid Systems Edmund Clarke a counterexample generated by the model checker. For hybrid systems, analysis of the counterexample requires

  6. HYBRID GROUND SOURCE HEAT PUMP SYSTEM SIMULATION USING VISUAL MODELING TOOL FOR HVACSIM+

    E-Print Network [OSTI]

    HYBRID GROUND SOURCE HEAT PUMP SYSTEM SIMULATION USING VISUAL MODELING TOOL FOR HVACSIM+ M.H. Khan, 74078, USA ABSTRACT This paper presents a simulation of a hybrid ground source heat pump system, performed using a new graphical user interface for HVACSIM+. Hybrid ground source heat pump systems

  7. Formal modeling and analysis of hybrid systems: A case study in multi-robot coordination

    E-Print Network [OSTI]

    the design phase. The formal analysis of the mixed digital-analog nature of hybrid systems r, and robots. Designing reliable hybrid systems is a challenging task. Control theoretic tools enable. A game-theoretic approach to designing controllers for hybrid systems with a hierarchical structure

  8. A 20-SUN HYBRID PV-THERMAL LINEAR MICRO-CONCENTRATOR SYSTEM FOR URBAN ROOFTOP APPLICATIONS

    E-Print Network [OSTI]

    conditioning (HVAC), and process heat. The system can be modularly configured for hybrid concentrating PVA 20-SUN HYBRID PV-THERMAL LINEAR MICRO-CONCENTRATOR SYSTEM FOR URBAN ROOFTOP APPLICATIONS D Walter of America ABSTRACT A unique, linear, low-concentration, hybrid `micro- concentrator' (MCT) system concept

  9. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01

    AND HYBRID HEATING AND COOLING SYSTEMS Michael J. Holtzmost common passive cooling systems and a representativepassive space heating and cooling systems. It is based upon

  10. APPROXIMATE SIMULATION RELATIONS FOR HYBRID SYSTEMS 1

    E-Print Network [OSTI]

    Pappas, George J.

    . Pappas Department of Electrical and Systems Engineering University of Pennsylvania Philadelphia, PA been introduced as a powerful tool for the approximation of discrete and continuous systems systems approximation. An example of application in the context of safety verification is shown. Keywords

  11. Performance of a hybrid ground-coupled heat pump system

    SciTech Connect (OSTI)

    Phetteplace, G.; Sullivan, W.

    1998-10-01

    In climates dominated by air conditioning, a few so-called hybrid ground-coupled heat pump (GCHP) systems have been built. The hybrid system uses both a ground-coupled heat exchanger and a cooling tower, thereby reducing the amount of ground-coupling heat exchanger necessary. Although this concept has been shown to be feasible, the performance of such a system has not been measured in detail. Since it may be possible to achieve significant performance improvements in such systems by modifying the design and operational practices, detailed performance monitoring of such systems is needed. This paper describes a project that has been undertaken to collect performance data from a hybrid GCHP system at Fort Polk, LA. This paper presents performance data for a period of about 22 months, including data from portions of two heating and cooling seasons. The energy input to the GCHPs themselves will be presented, as well as the energy rejected to the ground in the cooling mode and that extracted from the ground in the heating mode. Energy flows in the cooling tower also will be addressed, along with the power consumption of the circulating pumps and the cooling tower.

  12. Robust execution for stochastic hybrid systems

    E-Print Network [OSTI]

    Blackmore, Lars James Christopher

    2007-01-01

    Unmanned systems, such as Autonomous Underwater Vehicles (AUVs), planetary rovers and space probes, have enormous potential in areas such as reconnaissance and space exploration. However the effectiveness and robustness ...

  13. The CDMS II data acquisition system

    SciTech Connect (OSTI)

    Bauer, D.A.; Burke, S.; Cooley, J.; Crisler, M.; Cushman, P.; DeJongh, F.; Duong, L.; Ferril, R.; Golwala, S.R.; Hall, J.; Holmgren, D.; ,

    2011-01-01

    The Data Acquisition System for the CDMS II dark matter experiment was designed and built when the experiment moved to its new underground installation at the Soudan Lab. The combination of remote operation and increased data load necessitated a completely new design. Elements of the original LabView system remained as stand-alone diagnostic programs, but the main data processing moved to a VME-based system with custom electronics for signal conditioning, trigger formation and buffering. The data rate was increased 100-fold and the automated cryogenic system was linked to the data acquisition. A modular server framework with associated user interfaces was implemented in Java to allow control and monitoring of the entire experiment remotely.

  14. Multiobjective Search for the Management of a Hybrid Energy Storage System

    E-Print Network [OSTI]

    Noé, Reinhold

    Multiobjective Search for the Management of a Hybrid Energy Storage System Simon Boxnick, Stefan Kl objective search algorithm. The algorithm is designed for the management of a hybrid energy storage module-board hybrid energy storage system (HES) of the novel autonomous rail-bound vehicle RailCab developed

  15. Modeling and analysis of hybrid geothermal-solar thermal energy conversion systems

    E-Print Network [OSTI]

    Greenhut, Andrew David

    2010-01-01

    Innovative solar-geothermal hybrid energy conversion systems were developed for low enthalpy geothermal resources augmented with solar energy. The goal is to find cost-effective hybrid power cycles that take advantage of ...

  16. Experiences from the Roadrunner petascale hybrid systems

    SciTech Connect (OSTI)

    Kerbyson, Darren J; Pakin, Scott; Lang, Mike; Sancho Pitarch, Jose C; Davis, Kei; Barker, Kevin J; Peraza, Josh

    2010-01-01

    The combination of flexible microprocessors (AMD Opterons) with high-performing accelerators (IBM PowerXCell 8i) resulted in the extremely powerful Roadrunner system. Many challenges in both hardware and software were overcome to achieve its goals. In this talk we detail some of the experiences in achieving performance on the Roadrunner system. In particular we examine several implementations of the kernel application, Sweep3D, using a work-queue approach, a more portable Thread-building-blocks approach, and an MPI on the accelerator approach.

  17. Optimization of a hybrid solar energy collector system 

    E-Print Network [OSTI]

    Shinkman, Alan M.

    1981-01-01

    OPTIMIZATION OF A HYBRID SOLAR ENERGY COLLECTOR SYSTEM A Thesis by ALAN M. SHI NEMAN Submitted to the Graduate College of Texas A&N University in partial fulfillment of the requirement for the degree MASTER OF SCIENCE May 1981 Major Subject...: (Chairman of Committee) (Member) (Member) (Me et) (Head o Department) May 1981 wmezg ABSTRACT The Structural Impact of Commodity Farm Programs on Farms in the Southern Texas High Plains. (May 1981) Christina Ray Shirley, B. S. , Illinois State...

  18. Blockade of Rabi oscillations in hybrid optomechanical systems

    E-Print Network [OSTI]

    Timo Holz; Ralf Betzholz; Marc Bienert

    2015-07-01

    In a hybrid optomechanical setup consisting of a two-level atom in a cavity with a pendular end-mirror, the interplay between the light field's radiation pressure on the mirror and the dipole interaction with the atom can lead to a blockade effect, which manifests itself in a suppression of Rabi oscillations in the atomic population. This effect is present when the system is in the single photon strong coupling regime and has an analogy in the photon blockade of optomechanics.

  19. Evaluation of the 2007 Toyota Camry Hybrid Synergy Drive System

    SciTech Connect (OSTI)

    Burress, T A; Coomer, C L; Campbell, S L; Seiber, L E; Marlino, L D; Staunton, R H; Cunningham, J P

    2008-04-15

    The U.S. Department of Energy (DOE) and American automotive manufacturers General Motors, Ford, and DaimlerChrysler began a five-year, cost-shared partnership in 1993. Currently, hybrid electric vehicle (HEV) research and development is conducted by DOE through its FreedomCAR and Vehicle Technologies (FCVT) program. The mission of the FCVT program is to develop more energy efficient and environmentally friendly highway transportation technologies. Program activities include research, development, demonstration, testing, technology validation, and technology transfer. These activities are aimed at developing technologies that can be domestically produced in a clean and cost-competitive manner. Under the FCVT program, support is provided through a three-phase approach [1] which is intended to: • Identify overall propulsion and vehicle-related needs by analyzing programmatic goals and reviewing industry’s recommendations and requirements, then develop the appropriate technical targets for systems, subsystems, and component research and development activities; • Develop and validate individual subsystems and components, including electric motors, emission control devices, battery systems, power electronics, accessories, and devices to reduce parasitic losses; and • Determine how well the components and subassemblies work together in a vehicle environment or as a complete propulsion system and whether the efficiency and performance targets at the vehicle level have been achieved. The research performed in this area will help remove technical and cost barriers to enable technology for use in such advanced vehicles as hybrid electric, plug-in hybrid electric, electric, and fuel-cell-powered vehicles.

  20. SMR Handbook: Hybrid Energy Systems Involving SMRs

    SciTech Connect (OSTI)

    Shannon M. Bragg-Sitton

    2014-09-01

    Large-scale nuclear reactors are traditionally operated for a singular purpose: steady-state production of dispatchable baseload electricity that is distributed broadly on the electric grid. While this implementation is key to a sustainable, reliable energy grid, SMRs offer new opportunities for increased use of clean nuclear energy for both electric and thermal applications in more locations – while still accommodating the desire to support renewable production sources. This chapter considers a scenario in which renewable generation would be tightly coupled with the nuclear generation source – behind the grid – to meet the grid demand as an integrated energy system while simultaneously producing other commodities with the available thermal energy.

  1. Hybrid Electric Systems: Goals, Strategies, and Top Accomplishments (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-06-01

    Fact sheet describes the work EERE is doing in the areas of hybrid, plug-in hybrid, and all-electric vehicles.

  2. Hybrid Plasma Reactor/Filter for Transportable Collective Protection Systems

    SciTech Connect (OSTI)

    Josephson, Gary B.; Tonkyn, Russell G.; Frye, J. G.; Riley, Brian J.; Rappe, Kenneth G.

    2011-04-06

    Pacific Northwest National Laboratory (PNNL) has performed an assessment of a Hybrid Plasma/Filter system as an alternative to conventional methods for collective protection. The key premise of the hybrid system is to couple a nonthermal plasma (NTP) reactor with reactive adsorption to provide a broader envelope of protection than can be provided through a single-solution approach. The first step uses highly reactive species (e.g. oxygen radicals, hydroxyl radicals, etc.) created in a nonthermal plasma (NTP) reactor to destroy the majority (~75% - 90%) of an incoming threat. Following the NTP reactor an O3 reactor/filter uses the O3 created in the NTP reactor to further destroy the remaining organic materials. This report summarizes the laboratory development of the Hybrid Plasma Reactor/Filter to protect against a ‘worst-case’ simulant, methyl bromide (CH3Br), and presents a preliminary engineering assessment of the technology to Joint Expeditionary Collective Protection performance specifications for chemical vapor air purification technologies.

  3. The Hybrid Solid Oxide Fuel Cell (SOFC) and Gas Turbine (GT) Systems Steady State Modeling

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    The Hybrid Solid Oxide Fuel Cell (SOFC) and Gas Turbine (GT) Systems Steady State Modeling Penyarat plants offer high cycle efficiencies. In this work a hybrid solid oxide fuel cell and gas turbine power, Gas turbine, Hybrid, Solid Oxide Fuel Cell hal-00703135,version1-31May2012 Author manuscript

  4. A Mathematical Model for a Lithium-Ion Battery/Electrochemical Capacitor Hybrid System

    E-Print Network [OSTI]

    Popov, Branko N.

    A Mathematical Model for a Lithium-Ion Battery/Electrochemical Capacitor Hybrid System Godfrey those of high-energy battery systems such as lithium ion. Al- though advanced battery systems and double the performance of a battery/electrochemical capacitor-hybrid system has been developed. Simulation results

  5. Postdoc position: Hybrid Systems Theorem Proving Carnegie Mellon University, Computer Science Department

    E-Print Network [OSTI]

    Sandholm, Tuomas W.

    Postdoc position: Hybrid Systems Theorem Proving Carnegie Mellon University, Computer Science is to develop next-generation verification techniques for cyber- physical systems and hybrid systems. Our prover KeYmaera and have found application in the verification of cars, aircraft, railway systems

  6. A High Capacity Hybrid Fiberoptic/Wireless Communication System: An Overview W. D. Jemison1

    E-Print Network [OSTI]

    Herczfeld, Peter

    A High Capacity Hybrid Fiberoptic/Wireless Communication System: An Overview by W. D. Jemison1 , P This paper describes the development of a hybrid fiberoptic/wireless communications system. The system picocell. The system can support high-capacity (Gb/s) secure mobile communications for both military

  7. Time-Based Storage Bandwidth Allocation in Hybrid Storage Systems Rice University

    E-Print Network [OSTI]

    Time-Based Storage Bandwidth Allocation in Hybrid Storage Systems Hui Wang Rice University Peter for a hybrid storage system made up of both HDs and SSDs. To continue the example, suppose the HD has slicing treats the storage system as a black box and dedicates the system to a client for its time slice

  8. Final Report: Enhanced Geothermal Systems Technology Phase II...

    Open Energy Info (EERE)

    Final Report: Enhanced Geothermal Systems Technology Phase II: Animas Valley, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Final Report:...

  9. Adaptive hybrid optimal quantum control for imprecisely characterized systems

    E-Print Network [OSTI]

    D. J. Egger; F. K. Wilhelm

    2014-06-24

    Optimal quantum control theory carries a huge promise for quantum technology. Its experimental application, however, is often hindered by imprecise knowledge of the its input variables, the quantum system's parameters. We show how to overcome this by Adaptive Hybrid Optimal Control (Ad-HOC). This protocol combines open- and closed-loop optimal by first performing a gradient search towards a near-optimal control pulse and then an experimental fidelity measure with a gradient-free method. For typical settings in solid-state quantum information processing, Ad-Hoc enhances gate fidelities by an order of magnitude hence making optimal control theory applicable and useful.

  10. Control system and method for a hybrid electric vehicle

    DOE Patents [OSTI]

    Tamor, Michael Alan (Toledo, OH)

    2001-03-06

    Several control methods are presented for application in a hybrid electric vehicle powertrain including in various embodiments an engine, a motor/generator, a transmission coupled at an input thereof to receive torque from the engine and the motor generator coupled to augment torque provided by the engine, an energy storage device coupled to receive energy from and provide energy to the motor/generator, an engine controller (EEC) coupled to control the engine, a transmission controller (TCM) coupled to control the transmission and a vehicle system controller (VSC) adapted to control the powertrain.

  11. 2012 Annual Merit Review Results Report - Hybrid Vehicle Systems Technologies

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing ToolInternationalReport FY2014Conferenceof Energy Los2 1. Hybrid and Vehicle Systems

  12. Constructing Invariants for Hybrid Systems Sriram Sankaranarayanan, Henny B. Sipma, and Zohar Manna

    E-Print Network [OSTI]

    Sankaranarayanan, Sriram

    Constructing Invariants for Hybrid Systems Sriram Sankaranarayanan, Henny B. Sipma, and Zohar Manna Computer Science Department Stanford University Stanford, CA 94305-9045 {srirams

  13. Plug-In Hybrid Electric Vehicle Energy Storage System Design: Preprint

    SciTech Connect (OSTI)

    Markel, T.; Simpson, A.

    2006-05-01

    This paper discusses the design options for a plug-in hybrid electric vehicle, including power, energy, and operating strategy as they relate to the energy storage system.

  14. Can Future Emissions Limits be Met with a Hybrid EGR System Alone...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of hybrid EGR system in terms of deliverable EGR-rate, airfuel ratio, pumping losses and fuel use, taking into account interaction between EGR and boosting technology. Control...

  15. An Optimization Framework for Dynamic Hybrid Energy Systems

    SciTech Connect (OSTI)

    Wenbo Du; Humberto E Garcia; Christiaan J.J. Paredis

    2014-03-01

    A computational framework for the efficient analysis and optimization of dynamic hybrid energy systems (HES) is developed. A microgrid system with multiple inputs and multiple outputs (MIMO) is modeled using the Modelica language in the Dymola environment. The optimization loop is implemented in MATLAB, with the FMI Toolbox serving as the interface between the computational platforms. Two characteristic optimization problems are selected to demonstrate the methodology and gain insight into the system performance. The first is an unconstrained optimization problem that optimizes the dynamic properties of the battery, reactor and generator to minimize variability in the HES. The second problem takes operating and capital costs into consideration by imposing linear and nonlinear constraints on the design variables. The preliminary optimization results obtained in this study provide an essential step towards the development of a comprehensive framework for designing HES.

  16. Computational Issues in Intelligent Control: Discrete-Event and Hybrid Systems

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    Computational Issues in Intelligent Control: Discrete-Event and Hybrid Systems Xenofon D discrete event and hybrid systems. Computational issues of various problems and al- gorithms concerning to address the control needs of complex systems that exhibit complicated dynamical behaviors. The design

  17. Verification of Hybrid Systems Based on Counterexample-Guided Abstraction Refinement

    E-Print Network [OSTI]

    Clarke, Edmund M.

    verification, abstraction transforms the inherently infinite state system into a finite-state model [7Verification of Hybrid Systems Based on Counterexample-Guided Abstraction Refinement Edmund Clarke1 generated by the model checker. For hybrid systems, analysis of the counterexample requires the computation

  18. Verification of Hybrid Systems Based on CounterexampleGuided Abstraction Refinement ?

    E-Print Network [OSTI]

    Theobald, Michael

    verification, abstraction transforms the inherently infinite state system into a finite­state model [7, 8Verification of Hybrid Systems Based on Counterexample­Guided Abstraction Refinement ? Edmund that eliminates a counterexample generated by the model checker. For hybrid systems, analy­ sis

  19. Multi-Layer Prefetching for Hybrid Storage Systems: Algorithms, Models, and Evaluations

    E-Print Network [OSTI]

    Qin, Xiao

    Multi-Layer Prefetching for Hybrid Storage Systems: Algorithms, Models, and Evaluations Mais Nijim1, Atlanta, GA, USA. Abstract: Parallel storage systems have been highly scalable and widely used in support, hybrid storage systems opt for a solution to fulfill a variety of demands such as large storage capacity

  20. Synthesizing Controllers for Hybrid Systems ? Deepak Kapur 1 and R.K. Shyamasundar 2

    E-Print Network [OSTI]

    Kapur, Deepak

    plant, a digital­analog guidance of transport systems, control of a robot, flexible manufacturing systems, etc., can benefit from the study of hybrid models. Design, analysis (verification) and synthesisSynthesizing Controllers for Hybrid Systems ? Deepak Kapur 1 and R.K. Shyamasundar 2 1 Department

  1. A Feasibility Study for Wind/Hybrid Power System Applications for New England Islands

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    A Feasibility Study for Wind/Hybrid Power System Applications for New England Islands Gabriel systems that presently provide electricity and heating to the islands also vary. Of particular note wind/hybrid systems. A feasibility study, carried out at the Renewable Energy Research Laboratory (RERL

  2. Efficiency-Driven Design Time Optimization of a Hybrid Energy Storage System with Networked Charge Transfer

    E-Print Network [OSTI]

    Pedram, Massoud

    Efficiency-Driven Design Time Optimization of a Hybrid Energy Storage System with Networked Charge efficiency for various problem setups and scales. Keywords--hybrid energy storage system; networked charge transfer interconnect; placement I. INTRODUCTION Energy storage systems (ESSs) store the excess energy

  3. Aalborg Universitet Performance of hybrid quad generation system consisting of solid oxide fuel cell

    E-Print Network [OSTI]

    Liso, Vincenzo

    ., & Liso, V. (2013). Performance of hybrid quad generation system consisting of solid oxide fuel cell oxide fuel cell system and absorption heat pump Irene Albacete Cachorroa ,Iulia Maria DarabanaAalborg Universitet Performance of hybrid quad generation system consisting of solid oxide fuel

  4. Cost-Effective Design of a Hybrid Electrical Energy Storage System for Electric Vehicles

    E-Print Network [OSTI]

    Pedram, Massoud

    Cost-Effective Design of a Hybrid Electrical Energy Storage System for Electric Vehicles Di Zhu1 to the successful application of hybrid electrical energy storage (HEES) systems in electric vehi- cles (EVs energy storage system comprised of Li-ion batteries only. 1. INTRODUCTION Electric vehicles (EVs) have

  5. Control Valve Trajectories for SOFC Hybrid System Startup

    SciTech Connect (OSTI)

    Gorrell, Megan; Banta, Larry; Rosen, William; Restrepo, Bernardo; Tucker, David

    2012-07-01

    Control and management of cathode airflow in a solid oxide fuel cell gas turbine hybrid power system was analyzed using the Hybrid Performance (HyPer) hardware simulation at the National Energy Technology (NETL), U.S. Department of Energy. This work delves into previously unexplored operating practices for HyPer, via simultaneous manipulation of bypass valves and the electric load on the generator. The work is preparatory to the development of a Multi-Input, Multi-Output (MIMO) controller for HyPer. A factorial design of experiments was conducted to acquire data for 81 different combinations of the manipulated variables, which consisted of three air flow control valves and the electric load on the turbine generator. From this data the response surface for the cathode airflow with respect to bypass valve positions was analyzed. Of particular interest is the control of airflow through the cathode during system startup and during large load swings. This paper presents an algorithm for controlling air mass flow through the cathode based on a modification of the steepest ascent method.

  6. Hybrid computer simulation of atomic orbitals of one electron system 

    E-Print Network [OSTI]

    Balasubramanium, Prabaker

    1998-01-01

    quantum chemical wave equation. Generating this function is the unit level operation in molecular modeling. Therefore, analyzing the performance of the hybrid computer at this level will bring out the basic differences between hybrid computing and digital...

  7. Evaluation of 2005 Honda Accord Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, R.H.; Burress, T.A.; Marlino, L.D.

    2006-09-11

    The Hybrid Electric Vehicle (HEV) program officially began in 1993 as a five-year, cost-shared partnership between the U.S. Department of Energy (DOE) and American auto manufacturers: General Motors, Ford, and Daimler Chrysler. Currently, HEV research and development is conducted by DOE through its FreedomCAR and Vehicle Technologies (FCVT) program. The mission of the FCVT program is to develop more energy efficient and environmentally friendly highway transportation technologies. Program activities include research, development, demonstration, testing, technology validation, and technology transfer. These activities are aimed at developing technologies that can be domestically produced in a clean and cost-competitive manner. The vehicle systems technologies subprogram, which is one of four subprograms under the FCVT program, supports the efforts of the FreedomCAR through a three-phase approach [1] intended to: (1) Identify overall propulsion and vehicle-related needs by analyzing programmatic goals and reviewing industry's recommendations and requirements, then develop the appropriate technical targets for systems, subsystems, and component research and development activities; (2) Develop and validate individual subsystems and components, including electric motors, emission control devices, battery systems, power electronics, accessories, and devices to reduce parasitic losses; and (3) Determine how well the components and subassemblies work together in a vehicle environment or as a complete propulsion system and whether the efficiency and performance targets at the vehicle level have been achieved. The research performed under the vehicle systems subprogram will help remove technical and cost barriers to enable technology for use in such advanced vehicles as hybrid electric, plug-in electric, and fuel-cell-powered vehicles.

  8. Daniel Liberzon and A. Stephen Morse y a switched system, we mean a hybrid dynamical system

    E-Print Network [OSTI]

    Morse, A. Stephen

    . This article surveys recent developments in three basic problems regarding stability and design of switched industry, aircraft and air traffic control, switching power converters, and many other fields. The book 18C s Daniel Liberzon and A. Stephen Morse y a switched system, we mean a hybrid dynamical system

  9. System Simulations of Hybrid Electric Vehicles with Focus on Emissions

    Broader source: Energy.gov [DOE]

    Comparative simulations of hybrid electric vehicles with gasoline and diesel engines will be conducted with focus on emissions control.

  10. Evaluation of systems and components for hybrid optical firing sets

    SciTech Connect (OSTI)

    Landry, M.J.; Rupert, J.W.; Mittas, A.

    1989-06-01

    High-energy density light appears to be a unique energy form that may be used to enhance the nuclear safety of weapon systems. Hybrid optical firing sets (HOFS) utilize the weak-link/strong-link exclusion region concept for nuclear safety; this method is similar to present systems, but uses light to transmit power across the exclusion region barrier. This report describes the assembling, operating, and testing of fourteen HOFS. These firing sets were required to charge a capacitor-discharge unit to 2.0 and 2.5 kV (100 mJ) in less than 1 s. First, we describe the components, the measurement techniques used to evaluate the components, and the different characteristics of the measured components. Second, we describe the HOFS studied, the setups used for evaluating them, and the resulting characteristics. Third, we make recommendations for improving the overall performance and suggest the best HOFS for packaging. 36 refs., 145 figs., 14 tabs.

  11. AT2 DS II - Accelerator System Design (Part II) - CCC Video Conference

    ScienceCinema (OSTI)

    None

    2011-10-06

    Discussion Session - Accelerator System Design (Part II) Tutors: C. Darve, J. Weisend II, Ph. Lebrun, A. Dabrowski, U. Raich Video Conference with the CERN Control Center. Experts in the field of Accelerator science will be available to answer the students questions. This session will link the CCC and SA (using Codec VC).

  12. Combustion system for hybrid solar fossil fuel receiver

    DOE Patents [OSTI]

    Mehos, Mark S.; Anselmo, Kenneth M.; Moreno, James B.; Andraka, Charles E.; Rawlinson, K. Scott; Corey, John; Bohn, Mark S.

    2004-05-25

    A combustion system for a hybrid solar receiver comprises a pre-mixer which combines air and fuel to form an air-fuel mixture. The mixture is introduced tangentially into a cooling jacket. A burner plenum is fluidically connected to the cooling jacket such that the burner plenum and the cooling jacket are arranged in thermal contact with one another. The air-fuel mixture flows through the cooling jacket cooling the burner plenum to reduce pre-ignition of the air-fuel mixture in the burner plenum. A combustion chamber is operatively associated with and open to the burner plenum to receive the air-fuel mixture from the burner plenum. An igniter is operatively positioned in the combustion chamber to combust the air-fuel mixture, releasing heat. A recuperator is operatively associated with the burner plenum and the combustion chamber and pre-heats the air-fuel mixture in the burner plenum with heat from the combustion chamber. A heat-exchanger is operatively associated and in thermal contact with the combustion chamber. The heat-exchanger provides heat for the hybrid solar receiver.

  13. Safe Intersections: At the Crossing of Hybrid Systems and Verification Sarah M. Loos and Andre Platzer

    E-Print Network [OSTI]

    Platzer, André

    scenarios may be distributed hybrid systems [21] when there is a multi-agent situation with mul- tiple carsSafe Intersections: At the Crossing of Hybrid Systems and Verification Sarah M. Loos and Andr and risks in ground trans- portation, e.g., by making cars aware of their environment and regulating speed

  14. Electrically heated particulate filter regeneration methods and systems for hybrid vehicles

    DOE Patents [OSTI]

    Gonze, Eugene V. (Pinckney, MI); Paratore, Jr., Michael J. (Howell, MI)

    2010-10-12

    A control system for controlling regeneration of a particulate filter for a hybrid vehicle is provided. The system generally includes a regeneration module that controls current to the particulate filter to initiate regeneration. An engine control module controls operation of an engine of the hybrid vehicle based on the control of the current to the particulate filter.

  15. Models for Multi-Specie Chemical Reactions Using Polynomial Stochastic Hybrid Systems

    E-Print Network [OSTI]

    Hespanha, João Pedro

    Models for Multi-Specie Chemical Reactions Using Polynomial Stochastic Hybrid Systems Abhyudai for chemical reactions is presented. This is done by representing the population of various species involved in a chemical reaction as the continuous state of a polynomial Stochastic Hybrid System (pSHS). An important

  16. Improving the Yeast Three-Hybrid System for High-Throughput Target Discovery

    E-Print Network [OSTI]

    Bailey, Kyle

    2011-05-27

    -protein interactions. The yeast three-hybrid system is an attractive alternative that uses genetic tools to screen for protein-small molecule interactions in cellulo. This thesis describes efforts to improve the utility of the yeast three-hybrid system to screen...

  17. Fault tree construction of hybrid system requirements using qualitative formal method

    E-Print Network [OSTI]

    specifying requirements for software controlling hybrid systems and conducting safety analysis, engineersFault tree construction of hybrid system requirements using qualitative formal method Jang-Soo Leea , Sung-Deok Chab,* a Instrumentation and Control, Human Factors Division, Korea Atomic Energy Research

  18. On Control-Lyapunov Functions for Hybrid Time-Varying Systems Michael Malisoff and Frederic Mazenc

    E-Print Network [OSTI]

    Sontag, Eduardo

    On Control-Lyapunov Functions for Hybrid Time-Varying Systems Michael Malisoff and Fr´ed´eric Mazenc Abstract-- We explicitly construct strict input-to-state stable Lyapunov functions for time varying hybrid systems, in terms of given nonstrict Lyapunov functions and persistency of excitation

  19. Optimal Energy Management for a Hybrid Energy Storage System Combining Batteries and Double

    E-Print Network [OSTI]

    Noé, Reinhold

    Optimal Energy Management for a Hybrid Energy Storage System Combining Batteries and Double Layer storage for operation. High demands concerning power and energy density, small volume and weight is to combine storage technologies with complementary characteristics as a hybrid energy storage system. Thus

  20. Online Capable Optimized Planning of Power Split in a Hybrid Energy Storage System

    E-Print Network [OSTI]

    Noé, Reinhold

    Online Capable Optimized Planning of Power Split in a Hybrid Energy Storage System Karl Stephan, D-33095 Paderborn (Germany) {stille,romaus,boecker}@lea.upb.de Abstract--A hybrid energy storage system is an energy storage consisting of more than one type of energy storages combining

  1. A scalable and flexible hybrid energy storage system design and implementation

    E-Print Network [OSTI]

    Pedram, Massoud

    A scalable and flexible hybrid energy storage system design and implementation Younghyun Kim and flexibility. Detailed description on implementation of hybrid energy storage system prototype. Power conversion efficiency and energy storage element characteristics considered. a r t i c l e i n f o Article

  2. Short communication Optimization of hybrid ground coupled and air source heat pump systems

    E-Print Network [OSTI]

    Fernández de Córdoba, Pedro

    Short communication Optimization of hybrid ­ ground coupled and air source ­ heat pump systems 2008 Accepted 14 January 2010 Available online 28 January 2010 Keywords: Ground coupled heat pump Air to water heat pump Thermal storage device Hybrid HVAC system Energy efficiency Numerical simulation a b

  3. STATE ESTIMATION OF SOFC/GT HYBRID SYSTEM USING UKF Rambabu Kandepu*, 1

    E-Print Network [OSTI]

    Foss, Bjarne A.

    STATE ESTIMATION OF SOFC/GT HYBRID SYSTEM USING UKF Rambabu Kandepu*, 1 , Biao Huang** , Bjarne.Imsland@sintef.no Abstract: A description of a Solid Oxide Fuel Cell (SOFC) combined Gas Turbine (GT) hybrid system is given reliability. One of the most promising fuel cell technologies is the Solid Oxide Fuel Cell (SOFC), due to its

  4. Control system and method for a hybrid electric vehicle

    DOE Patents [OSTI]

    Phillips, Anthony Mark (Northville, MI); Blankenship, John Richard (Dearborn, MI); Bailey, Kathleen Ellen (Dearborn, MI); Jankovic, Miroslava (Birmingham, MI)

    2001-01-01

    A vehicle system controller (20) is presented for a LSR parallel hybrid electric vehicle having an engine (10), a motor (12), wheels (14), a transmission (16) and a battery (18). The vehicle system controller (20) has a state machine having a plurality of predefined states (22-32) that represent operating modes for the vehicle. A set of rules is defined for controlling the transition between any two states in the state machine. The states (22-32) are prioritized according to driver demands, energy management concerns and system fault occurrences. The vehicle system controller (20) controls the transitions from a lower priority state to a higher priority state based on the set of rules. In addition, the vehicle system controller (20) will control a transition to a lower state from a higher state when the conditions no longer warrant staying in the current state. A unique set of output commands is defined for each state for the purpose of controlling lower level subsystem controllers. These commands serve to achieve the desire vehicle functionality within each state and insure smooth transitions between states.

  5. Supervisory Control of Hybrid Systems XENOFON D. KOUTSOUKOS, PANOS J. ANTSAKLIS, FELLOW, IEEE, JAMES A. STIVER, AND

    E-Print Network [OSTI]

    Antsaklis, Panos

    Supervisory Control of Hybrid Systems XENOFON D. KOUTSOUKOS, PANOS J. ANTSAKLIS, FELLOW, IEEE control of hybrid systems is in- troduced and discussed at length. Such control systems typically arise, in transportation sys- tems, and in communication networks. A functional architecture of hybrid control systems

  6. A novel hybrid (wind-photovoltaic) system sizing procedure

    SciTech Connect (OSTI)

    Hocaoglu, Fatih O.; Gerek, Oemer N.; Kurban, Mehmet

    2009-11-15

    Wind-photovoltaic hybrid system (WPHS) utilization is becoming popular due to increasing energy costs and decreasing prices of turbines and photovoltaic (PV) panels. However, prior to construction of a renewable generation station, it is necessary to determine the optimum number of PV panels and wind turbines for minimal cost during continuity of generated energy to meet the desired consumption. In fact, the traditional sizing procedures find optimum number of the PV modules and wind turbines subject to minimum cost. However, the optimum battery capacity is either not taken into account, or it is found by a full search between all probable solution spaces which requires extensive computation. In this study, a novel description of the production/consumption phenomenon is proposed, and a new sizing procedure is developed. Using this procedure, optimum battery capacity, together with optimum number of PV modules and wind turbines subject to minimum cost can be obtained with good accuracy. (author)

  7. Discussion on the Energy-Saving Potential of a Hybrid System in a Large Space Building in Different Areas 

    E-Print Network [OSTI]

    Liu, S.; Huang, C.

    2006-01-01

    The use of a hybrid ventilation system is promoted to decrease the annual energy consumption of air conditioning. The switch-point of temperature, which is related with weather conditions, is presented to control the hybrid system properly...

  8. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, James W. (Danville, CA)

    1988-01-01

    Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion.

  9. Hybrid-drive implosion system for ICF targets

    DOE Patents [OSTI]

    Mark, J.W.K.

    1987-10-14

    Hybrid-drive implosion systems for ICF targets are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator surroundingly disposed around fusion fuel. The ablator is first compressed to higher density by a laser system, or by an ion beam system, that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system that is optimized for this second phase of operation of the target. The fusion fuel is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion. 3 figs.

  10. Evaluation of a Lower-Energy Energy Storage System (LEESS) for Full-Hybrid Electric Vehicles (HEVs) (Presentation)

    SciTech Connect (OSTI)

    Gonder, J.; Ireland, J.; Cosgrove, J.

    2013-04-01

    This presentation discusses the evaluation of a lower-energy energy storage system for full-hybrid electric vehicles.

  11. Operation o Solar Photovoltaic-Thermal (PVT) Hybrid System in KIER 

    E-Print Network [OSTI]

    Naveed, A.T.; Lee, E. J.; Kang, E. C.

    2006-01-01

    The details of the Photovoltaic Thermal (PVT) hybrid air heating system, UTC air heating system and its effect on the performance of photovoltaic (PV) module and room temperature in KIER are explained in this paper. Two identical test rooms were...

  12. Energy Management System for an Hybrid Electric Vehicle, Using Ultracapacitors and Neural Networks

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    from regenerative braking, or with scarce power capacity for fast acceleration. The experimental HEV to accept energy from regenerative braking. For this reason, hybrid systems use an auxiliary energy system

  13. Nuclear renewable oil shale hybrid energy systems : configuration, performance, and development pathways

    E-Print Network [OSTI]

    Curtis, Daniel Joseph

    2015-01-01

    Nuclear Renewable Oil Shale Systems (NROSS) are a class of large Hybrid Energy Systems in which nuclear reactors provide the primary energy used to produce shale oil from kerogen deposits and also provide flexible, ...

  14. Advancements of the Hybrid Method UF6 Container Inspection System

    SciTech Connect (OSTI)

    Mace, Emily K.; Orton, Christopher R.; Jordan, David V.; McDonald, Benjamin S.; Smith, Leon E.

    2011-07-17

    Safeguards inspectors currently visit uranium enrichment plants to verify UF6 cylinder enrichment declarations. Measurements are performed with handheld high-resolution detectors on a limited number of cylinders taken to be representative of the plant’s cylinder inventory. These enrichment assay methods interrogate only a small fraction of the total cylinder volume, and are time-consuming and expensive to execute. Pacific Northwest National Laboratory (PNNL) is developing an automated UF6 cylinder verification station concept based on the combined collection of traditional enrichment-meter data (186 keV photons from 235U) and non-traditional, neutron-induced, high-energy gamma-ray signatures (3-8 MeV) with an array of collimated, medium-resolution scintillators. Previous work at PNNL (2010) demonstrated proof-of-principle that this hybrid method yields accurate, full-volume assay of the cylinder enrichment, reduces systematic errors when compared to several other enrichment assay methods, and provides simplified instrumentation and algorithms suitable for long-term, unattended operations. This system aims to increase the number of inspected cylinders at higher accuracy and with lower cost than when compared to inspectors with hand-held instruments. Several measurement campaigns of 30B cylinder populations and a refined MCNP model will be reported. The MCNP model consists of per-gram basis vectors for the different uranium isotopes and several fill geometries, enabling fast generation of any UF6 enrichment level and multiple configurations. The refined model was used to optimize collimator design and detector configuration for the hybrid method. In addition, a new field prototype based on model results was utilized in a set of field measurements.

  15. Reversible work extraction in a hybrid opto-mechanical system

    E-Print Network [OSTI]

    Cyril Elouard; Maxime Richard; Alexia Auffèves

    2015-02-16

    With the progress of nano-technology, thermodynamics also has to be scaled down, calling for specific protocols to extract and measure work. Usually, such protocols involve the action of an external, classical field (the battery) of infinite energy, that controls the energy levels of a small quantum system (the calorific fluid). Here we suggest a realistic device to reversibly extract work in a battery of finite energy : a hybrid optomechanical system. Such devices consist in an optically active two-level quantum system interacting strongly with a nano-mechanical oscillator that provides and stores mechanical work, playing the role of the battery. We identify protocols where the battery exchanges large, measurable amounts of work with the quantum emitter without getting entangled with it. When the quantum emitter is coupled to a thermal bath, we show that thermodynamic reversibility is attainable with state-of-the-art devices, paving the road towards the realization of a full cycle of information-to-energy conversion at the single bit level.

  16. The MOTion trap: a hybrid atom-ion trap system for experiments in cold-chemistry and the production of cold polar molecular ions

    E-Print Network [OSTI]

    Sullivan, Scott Trevor

    2013-01-01

    interaction in the hybrid system, the self heating rate ismass dependent heating e?ects for the hybrid system of this

  17. HPIS3: Towards a High-Performance Simulator for Hybrid Parallel I/O and Storage Systems

    E-Print Network [OSTI]

    Sun, Xian-He

    HPIS3: Towards a High-Performance Simulator for Hybrid Parallel I/O and Storage Systems Bo Feng, data and supercomputing centers usually adopt a hybrid storage system, which consists of a combination of HDD and SSD I/O servers. However, hybrid I/O and storage systems have increased the complexity, making

  18. NAWIPS Integration with AWIPS II System Overview

    E-Print Network [OSTI]

    2011 #12;Topics · AWIPS Program Background ­ Functions/Mission ­ Technology Infusion Background ­ Technology Infusion Scope · AWIPS II Migration Overview ­ Mission / Goals ­ Business Need ­ Philosophy behind locations (includes HI, PR, Offutt AFB, Scott AFB) 3 NCEP Models Analyses #12;44 AWIPS Tech Infusion

  19. Hybrid Ground Source System Analysis and Tool Development

    Broader source: Energy.gov [DOE]

    Project objectives: 1. Compile filtered hourly data for three monitored hybrid installations. 2.Validate existing HyGCHP model. 3.Refine and enhance the HyGCHP model (usability / capability). 4. Demonstrate impact of actual hybrid installations. 5. Report lessons learned and impacts of HyGSHPs to design/engineering community.

  20. Modeling and Simulation of a Microgrid as a Stochastic Hybrid System

    E-Print Network [OSTI]

    Abate, Alessandro

    1 Modeling and Simulation of a Microgrid as a Stochastic Hybrid System Martin Strelec, Karel Macek, Alessandro Abate Abstract--Microgrids (MGs) are small-scale local energy grids. While dedicated to cover and on approximate dynamic programming) for typical challenges in MGs. Index Terms--Microgrids, Stochastic Hybrid

  1. Optimal control of a hybrid production/remanufacturing system using one shared resource

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Optimal control of a hybrid production/remanufacturing system using one shared resource Lâm Laurent products into the materials planning is a key issue in reverse logistics. 1.2 Hybrid production-birth-death processes 1 Introduction 1.1 Reusing product returns There are several reasons why companies consider

  2. Hybrid Electrical Energy Storage Systems Massoud Pedram, Naehyuck Chang, Younghyun Kim, and Yanzhi Wang

    E-Print Network [OSTI]

    Pedram, Massoud

    Hybrid Electrical Energy Storage Systems Massoud Pedram, Naehyuck Chang, Younghyun Kim, and Yanzhi of EES element fulfills high energy density, high power delivery capacity, low cost per unit of storage Descriptors B.0 [General] General Terms Design Keywords Energy, Energy storage, Electrical storage, Hybrid

  3. Title of thesis: SCHEDULING IN ENERGY HARVESTING SYSTEMS WITH HYBRID ENERGY STORAGE

    E-Print Network [OSTI]

    Ulukus, Sennur

    ABSTRACT Title of thesis: SCHEDULING IN ENERGY HARVESTING SYSTEMS WITH HYBRID ENERGY STORAGE and Computer Engineering In wireless networks, efficient energy storage and utilization plays a vital role transmission with an energy harvesting trans- mitter which has hybrid energy storage with a perfect super

  4. Multiple-Source and Multiple-Destination Charge Migration in Hybrid Electrical Energy Storage Systems*

    E-Print Network [OSTI]

    Pedram, Massoud

    Multiple-Source and Multiple-Destination Charge Migration in Hybrid Electrical Energy Storage massimo.poncino@polito.it Abstract-- Hybrid electrical energy storage (HEES) systems consist of multiple banks of heterogeneous electrical energy storage (EES) elements that are connected to each other through

  5. Fuzzy Based Energy Management Control of A Hybrid Fuel Cell Auxiliary Power System

    E-Print Network [OSTI]

    Simões, Marcelo Godoy

    Fuzzy Based Energy Management Control of A Hybrid Fuel Cell Auxiliary Power System M. Godoy Simões1 Belfort-Montbéliard (France) Abstract -- This paper presents the analysis and design of a hybrid fuel cell battery auxiliary power unit (APU) for remote applications where a fuel cell is the main energy source

  6. Hybrid Probabilistic RoadMap -Monte Carlo Motion Planning for Closed Chain Systems with

    E-Print Network [OSTI]

    Han, Li

    Hybrid Probabilistic RoadMap - Monte Carlo Motion Planning for Closed Chain Systems with Spherical@clarku.edu Abstract-- In this paper we propose a hybrid Probabilistic RoadMap - Monte Carlo (PRM-MC) motion planner and connect a large number of robot configurations in order to build a roadmap that reflects the properties

  7. Fluorescence from a quantum dot and metallic nanosphere hybrid system

    SciTech Connect (OSTI)

    Schindel, Daniel G. [Department of Mathematics and Statistics, University of Winnipeg, 515 Portage Avenue, Winnipeg, MB, R3B 2E9 (Canada); Singh, Mahi R. [Department of Physics and Astronomy, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 3K7 (Canada)

    2014-03-31

    We present energy absorption and interference in a quantum dot-metallic nanosphere system embedded on a dielectric substrate. A control field is applied to induce dipole moments in the nanosphere and the quantum dot, and a probe field is applied to monitor absorption. Dipole moments in the quantum dot or the metal nanosphere are induced, both by the external fields and by each other's dipole fields. Thus, in addition to direct polarization, the metal nanosphere and the quantum dot will sense one another via the dipole-dipole interaction. The density matrix method was used to show that the absorption spectrum can be split from one peak to two peaks by the control field, and this can also be done by placing the metal sphere close to the quantum dot. When the two are extremely close together, a self-interaction in the quantum dot produces an asymmetry in the absorption peaks. In addition, the fluorescence efficiency can be quenched by the addition of a metal nanosphere. This hybrid system could be used to create ultra-fast switching and sensing nanodevices.

  8. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, R.H.; Ayers, C.W.; Chiasson, J.N.; Burress, B.A.; Marlino, L.D.

    2006-05-01

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE)-Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if operated at temperatures as high as is normally encountered in a vehicle engine. The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. A separate, comprehensive report on this thermal control study is available [1].

  9. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

    Staunton, Robert H; Ayers, Curtis William; Chiasson, J. N.; Burress, Timothy A; Marlino, Laura D

    2006-05-01

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery- and generator-powered electric motor. Both of these motive-power sources are capable of providing mechanical-drive power for the vehicle. The engine can deliver a peak-power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak-power output of 50 kW over the speed range of 1200-1540 rpm. Together, this engine-motor combination has a specified peak-power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. To acquire knowledge and thereby improve understanding of the propulsion technology used in the 2004 Prius, a full range of design characterization studies were conducted to evaluate the electrical and mechanical characteristics of the 2004 Prius and its hybrid electric drive system. These characterization studies included (1) a design review, (2) a packaging and fabrication assessment, (3) bench-top electrical tests, (4) back-electromotive force (emf) and locked rotor tests, (5) loss tests, (6) thermal tests at elevated temperatures, and most recently (7) full-design-range performance testing in a controlled laboratory environment. This final test effectively mapped the electrical and thermal results for motor/inverter operation over the full range of speeds and shaft loads that these assemblies are designed for in the Prius vehicle operations. This testing was undertaken by the Oak Ridge National Laboratory (ORNL) as part of the U.S. Department of Energy (DOE) - Energy Efficiency and Renewable Energy (EERE) FreedomCAR and Vehicle Technologies (FCVT) program through its vehicle systems technologies subprogram. The thermal tests at elevated temperatures were conducted late in 2004, and this report does not discuss this testing in detail. The thermal tests explored the derating of the Prius motor design if operated at temperatures as high as is normally encountered in a vehicle engine. The continuous ratings at base speed (1200 rpm) with different coolant temperatures are projected from test data at 900 rpm. A separate, comprehensive report on this thermal control study is available [1].

  10. The Effect of PV Array Size and Battery Size on the Economics of PV/Diesel/Battery Hybrid RAPS Systems

    E-Print Network [OSTI]

    The Effect of PV Array Size and Battery Size on the Economics of PV/Diesel/Battery Hybrid RAPS WA 6150 Abstract This paper focuses on pv/diesel/battery hybrid RAPS systems meeting loads above 50 kWh. INTRODUCTION A diesel hybrid system, incorporating a battery and inverter, can often provide power at a lower

  11. Nuclear Hybrid Energy Systems: Imperatives, Prospects, and Challenges

    SciTech Connect (OSTI)

    Steven E. Aumeier

    2010-10-01

    As global population reaches an expected 8 billion people by 2030, primary energy consumption is expected to increase by almost 40% from approximately 520 exajoules consumed today to almost 740 exajoules. Much of this increase is expected to come from non-Organization for Economic Cooperation and Development (OECD) nations, and Asia specifically. In these economies, energy used for transportation is expected to grow substantially, as is industrial, commercial and to a lesser degree residential energy use, creating considerable pressure on global and local energy markets. The magnitude and timing of growth in energy consumption likely will create a global imperative to deploy energy production technologies that balance the three pillars of energy security: • economic stability – related to the affordability of energy products, stability and predictability in their price, and the efficient and effective deployment of global capital resources in their development; • environmental sustainability – related to minimizing the negative impacts of energy production to air, land, and water systems and advancing the long-term viability of using a particular resource in a way that does not limit future generations ability to prosper; • resource security – related to the ability to access energy resources and products where and when necessary, in an affordable and predictable manner. One approach to meeting these objectives is hybrid energy systems (HES). Broadly described, HES are energy product production plants that take two or more energy resource inputs (typically includes both carbon and non-carbon based sources) and produce two or more energy products (e.g. electricity, liquid transportation fuels, industrial chemicals) in an integrated plant. Nuclear energy integration into HES offers intriguing potential, particularly if smaller (<300 MWe) reactors are available. Although the concept of using nuclear energy in a variety of non-electrical process applications is certainly not new, renewed interest in more tightly coupled energy product plants (such as HES) that meet the objectives outline above have gained additional interest recently, an interest likely sparked by sharpening energy security concerns. Studies have shown that non-nuclear integrated (hybrid) energy systems can have appealing attributes in terms of overall process efficiency, enhanced electric grid stability, renewable energy integration, and economic performance, and lifecycle greenhouse gas emissions. These attributes seem to be sufficiently compelling that several significant commercial investments in fossil-renewable HES are being made in the United States while the U.S. Defense Advanced Research Projects Agency (DARPA) has openly solicited information regarding nuclear energy integration schemes. The challenges of nuclear energy integration include myriad issues associated with the following RD&D areas, or “platforms”: • feedstock processing (e.g. bio-feedstock integration with coal, carbon feedstock extraction using nuclear energy); • heat / energy management (e.g. advanced heat exchangers, process design); • energy storage (e.g. H2 production, liquid fuels synthesis); • byproduct management (e.g. CO2 recycle approaches); • systems dynamics, integration and control (e.g. process dynamics analyses and optimization, advanced prognostics, diagnostics, variable time scale control and flow sheet optimization).

  12. A Hybrid Model Based and Statistical Fault Diagnosis System for Industrial Process 

    E-Print Network [OSTI]

    Lin, Chen-Han

    2014-11-21

    This thesis presents a hybrid model based and statistical fault diagnosis system, which applied on the nonlinear three-tank model. The purpose of fault diagnosis is generating and analyzing the residual to find out the fault occurrence. This fault...

  13. Design of a hybrid energy-generation system for autonomous kayaks

    E-Print Network [OSTI]

    Plumer, Kevin E. (Kevin Edward)

    2010-01-01

    The goal of this research is to design and analyze a series-hybrid energy-production system for an autonomous kayak. Currently these vehicles have limited range due to energy storage in lead acid batteries. Extending the ...

  14. Multi-Objective Capacity Planning of a Pv-Wind-Diesel-Battery Hybrid Power System

    E-Print Network [OSTI]

    Saif, A.

    A new solution methodology of the capacity design problem of a PV-Wind-Diesel-Battery Hybrid Power System (HPS) is presented. The problem is formulated as a Linear Programming (LP) model with two objectives: minimizing ...

  15. Hybrid vehicle powertrain system with power take-off driven vehicle accessory

    DOE Patents [OSTI]

    Beaty, Kevin D.; Bockelmann, Thomas R.; Zou, Zhanijang; Hope, Mark E.; Kang, Xiaosong; Carpenter, Jeffrey L.

    2006-09-12

    A hybrid vehicle powertrain system includes a first prime mover, a first prime mover driven power transmission mechanism having a power take-off adapted to drive a vehicle accessory, and a second prime mover. The second prime mover is operable to drive the power transmission mechanism alone or in combination with the first prime mover to provide power to the power take-off through the power transmission mechanism. The invention further includes methods for operating a hybrid vehicle powertrain system.

  16. SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT

    E-Print Network [OSTI]

    SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS By XIAOWEI XU Bachelor #12;ii SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS Dissertation Approved Loop Heat Exchanger Model....................................................... 11 2.1.1.1 Modeling

  17. SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT

    E-Print Network [OSTI]

    SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS By XIAOWEI XU Bachelor #12;ii SIMULATION AND OPTIMAL CONTROL OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS Dissertation Approved of Vertical Ground Loop Heat Exchangers - Analytical....... 21 2.1.1.2 Modeling of Vertical Ground Loop Heat

  18. 6.43.28 Hybrid Control Systems1 Karl Henrik Johansson, Dept. of Signals, Sensors & Systems, Royal Institute of Technology, 100 44

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    6.43.28 Hybrid Control Systems1 Karl Henrik Johansson, Dept. of Signals, Sensors & Systems, Royal-time system; Dynamical system; Control theory; Embedded soft- ware; Hierarchical control; Computer-controlled system; Discrete-event systems; Hybrid automata; Discontinuous control; Switched system; Supervisory

  19. Spectroscopy identification performance enhancement of a novel CZT/CsI hybrid system

    SciTech Connect (OSTI)

    Russ, W.; Nakazawa, D.; Hau, I.; Morichi, M.

    2011-07-01

    New hybrid spectroscopic systems directly combine spectra from detectors with very different energy resolutions, accommodating standard analyses of the output hybrid spectrum. Simulations of a hybrid system consisting of a 2 or 4 cm{sup 3} cadmium zinc telluride detector combined with a 32.8 cm{sup 3} CsI(Tl) were evaluated for identification performance. 29 nuclides of interest for security applications were simulated as singles and unique pairs, producing 435 spectral simulations at live times of 3, 10, 30, 100 and 300 seconds. The nuclides were modeled as point sources at 25 cm with activities that provide an interesting range of statistical significance for the range of counting times. Standard nuclide identification analyses were applied to the component detectors as well as the hybrid combination. Tallies of the results were used to calculate true and false identification rates. The hybrid system was shown to provide an identification performance benefit, consistently achieving performances closest to ideal relative to the separate component detectors. The hybrid approach enables the consideration of a greater variety of measurement system solutions in terms of cost and performance. (authors)

  20. Design, modeling and control of a hybrid machine system

    E-Print Network [OSTI]

    Zhang, WJ "Chris"

    .J. Zhang). Mechatronics 14 (2004) 1197­1217 #12;Keywords: Hybrid machine; Five-bar mechanism; Design.S. Guo c a Advanced Engineering Design Laboratory, Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada b School of Mechanical and Production Engineering

  1. Upgrade of Beam Energy Measurement System at BEPC-II

    E-Print Network [OSTI]

    Jian-Yong Zhang; Xiao Cai; Xiao-Hu Mo; Di-Zhou Guo; Jian-Li Wang; Bai-Qi Liu; M. N. Achasov; A. A. Krasnov; N. Yu. Muchnoi; E. E. Pyata; E. V. Mamoshkina; F. A. Harris

    2015-10-28

    The beam energy measurement system is of great importance and profit for both BEPC-II accelerator and BES-III detector. The system is based on measuring the energies of Compton back-scattered photons. Many advanced techniques and precise instruments are employed to realize the highly accurate measurement of positron/electron beam energy. During five year's running period, in order to meet the requirement of data taking and improve the capacity of measurement itself, the upgradation of system is continued, which involve the component reformation of laser and optics subsystem, replacement of view-port of the laser to vacuum insertion subsystem, the purchase of electric cooling system for high purity germanium detector, and the improvement of data acquisition and processing subsystem. The upgrading of system guarantees the smooth and efficient measuring of beam energy at BEPC-II and accommodates the accurate offline energy values for further physics analysis at BES-III.

  2. Upgrade of Beam Energy Measurement System at BEPC-II

    E-Print Network [OSTI]

    Zhang, Jian-Yong; Mo, Xiao-Hu; Guo, Di-Zhou; Wang, Jian-Li; Liu, Bai-Qi; Achasov, M N; Krasnov, A A; Muchnoi, N Yu; Pyata, E E; Mamoshkina, E V; Harris, F A

    2015-01-01

    The beam energy measurement system is of great importance and profit for both BEPC-II accelerator and BES-III detector. The system is based on measuring the energies of Compton back-scattered photons. Many advanced techniques and precise instruments are employed to realize the highly accurate measurement of positron/electron beam energy. During five year's running period, in order to meet the requirement of data taking and improve the capacity of measurement itself, the upgradation of system is continued, which involve the component reformation of laser and optics subsystem, replacement of view-port of the laser to vacuum insertion subsystem, the purchase of electric cooling system for high purity germanium detector, and the improvement of data acquisition and processing subsystem. The upgrading of system guarantees the smooth and efficient measuring of beam energy at BEPC-II and accommodates the accurate offline energy values for further physics analysis at BES-III.

  3. On the Averaging of a Class of Hybrid Systems Luigi Iannelli

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    that are excited by high-frequency external signals. These systems arise in the modeling of switched power analysis, as well as in numerical simulation and verification. Here we study a class of hybrid systems of engineering. For control system design, a good model is one that is complex enough to capture the important

  4. Formal modeling and analysis of hybrid systems: A case study in multirobot coordination

    E-Print Network [OSTI]

    Alur, Rajeev

    controllers, medical equipment, micro­electro­mechanical systems, and robots. Designing reliable hybrid systems is a challenging task. Control theoretic tools enable the design of continuous controllers in a single mode of operation. While nonlinear switching controllers have been designed for systems with sev

  5. A Hybrid Feedback Regulator Approach to Control an Automotive Suspension System

    E-Print Network [OSTI]

    Koutsoukos, Xenofon D.

    A Hybrid Feedback Regulator Approach to Control an Automotive Suspension System Xenofon D synthe- sis approach using an automotive suspension system. Discrete abstrac- tions are used control synthesis is presented and an example of an automotive suspension system is used to illus- trate

  6. Fluid transport properties by equilibrium molecular dynamics. II. Multicomponent systems

    E-Print Network [OSTI]

    Dysthe, Dag Kristian

    Fluid transport properties by equilibrium molecular dynamics. II. Multicomponent systems D. K than 25 years molecular dynamics has been used to study fluid transport properties. Such MD studies and multicenter molecular models.8­16 d The study of transport properties of certain fluids and classes of fluids

  7. Wireless Tomography, Part II: A System Engineering Approach

    E-Print Network [OSTI]

    Qiu, Robert Caiming

    Wireless Tomography, Part II: A System Engineering Approach R. C. Qiu, Z. Hu, M. C. Wicks, S. J.Wicks@rl.af.mil Abstract--This is the second paper in a series on a new initiative of wireless tomography. The goal is to combine two areas: wireless communication and radio tomography. This paper studies wireless tomography

  8. RADIATION CHEMISTRY OF HEAVY PARTICLE TRACKS. II.. THE FRICKE DOSIMETER SYSTEM

    E-Print Network [OSTI]

    Chatterjee, Aloke

    2013-01-01

    been verified for the Fricke dosimeter system; for anotherTRACKS. II. THE FRICKE DOSIMETER SYSTEM Aloke Chatterjee andTRACKS. II. THE FRICKE DOSIMETER SYSTEM Aloke Chatterjee and

  9. DOE/NREL Inner Mongolia PV/Wind Hybrid Systems Pilot Project: A Post-Installation Assessment

    SciTech Connect (OSTI)

    Stroup, K. K.

    2005-02-01

    This report assesses the Inner Mongolia Pilot Project, which disseminates wind-solar hybrid systems to a rural and remote population.

  10. Los Alamos hybrid environment: an integrated development/configuration management system

    SciTech Connect (OSTI)

    Cort, G.

    1984-01-01

    I present the details of a hybrid configuration management system that utilizes a commercial configuration management tool (Softool's Change and Configuration Control environment) to monitor and control the development of mission-critical software systems at the Los Alamos Weapons Neutron Research Facility. The hybrid system combines features of the VMS host operating system and elements of the tool environment to integrate a flexible development environment with a very powerful automated configuration management system. The features of this system are presented with particular emphasis on the benefits of the hybrid approach. The complementary nature of the constituent environments is described. Special attention is given the issues of operational tradeoffs, personnel interaction and utilization, management visibility and overall system performance. It is shown that by employing a special interface data structure, the hybrid environment supports a much higher level of automation (of both development and configuration management activities) than is realizable in either environment individually. Examples are provided to illustrate the extent to which development activities and all phases of configuration management can be automated under this system. It is shown that in the process of providing a rigorous configuration management environment, the system remains virtually transparent to software development personnel and actually enhances the programmer's capabilities.

  11. BULK POWER SYSTEM DYNAMICS AND CONTROL V, AUGUST 26-31, 2001, ONOMICHI, JAPAN Global Hybrid Control of Power Systems

    E-Print Network [OSTI]

    Guo, Yi

    BULK POWER SYSTEM DYNAMICS AND CONTROL V, AUGUST 26-31, 2001, ONOMICHI, JAPAN Global Hybrid Control| This paper presents an overview of recent results on an ap- proach to total control of power systems con- trol for voltage security of power systems, and same ideas for general control [1{6]. In arriving

  12. Hybrid control of networked embedded systems A. Balluchi, L. Benvenuti, S. Engell, T. Geyer, K.H. Johansson,

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    Hybrid control of networked embedded systems A. Balluchi, L. Benvenuti, S. Engell, T. Geyer, K surveying the main theoretical control problems that have been treated in the hybrid systems setting: Control of power systems, industrial process control, design of automotive electronics and communication

  13. Aalborg Universitet Influence of Li-ion Battery Models in the Sizing of Hybrid Storage Systems with

    E-Print Network [OSTI]

    Andreasen, Søren Juhl

    Aalborg Universitet Influence of Li-ion Battery Models in the Sizing of Hybrid Storage Systems, R. E. (2014). Influence of Li-ion Battery Models in the Sizing of Hybrid Storage Systems Storage Systems with Supercapacitors Cl´audio Pinto, Jorge V. Barreras, Ricardo de Castro, Erik Schaltz

  14. OPTIMIZATION OF HYBRID GEOTHERMAL HEAT PUMP SYSTEMS Scott Hackel, Graduate Research Assistant; Gregory Nellis, Professor; Sanford Klein,

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    1 OPTIMIZATION OF HYBRID GEOTHERMAL HEAT PUMP SYSTEMS Scott Hackel, Graduate Research Assistant, Madison, WI, United States Abstract: Hybrid ground-coupled heat pump systems (HyGCHPs) couple conventional ground- coupled heat pump (GCHP) equipment with supplemental heat rejection or extraction systems

  15. Charge Migration Efficiency Optimization in Hybrid Electrical Energy Storage (HEES) Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    )-investment in the generation facilities. Electrical energy storage (EES) systems can thus increase power reliabilityCharge Migration Efficiency Optimization in Hybrid Electrical Energy Storage (HEES) Systems ABSTRACT Electrical energy is high-quality form of energy, and thus it is ben- eficial to store

  16. LQ Optimal Control of Wind Turbines in Hybrid Power Systems N.A. Cutululis1

    E-Print Network [OSTI]

    LQ Optimal Control of Wind Turbines in Hybrid Power Systems N.A. Cutululis1 , H. Bindner1 , I. Munteanu2 , A. Bratcu2 , E. Ceanga2 , P. Soerensen1 1 Risø National Laboratory, Denmark Wind Energy Systems, Faculty of Electrical Engineering, "Dunrea de Jos" University of Galati, Abstract: Wind ­ diesel

  17. Adaptive Model Predictive Control of the Hybrid Dynamics of a Fuel Cell System.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Adaptive Model Predictive Control of the Hybrid Dynamics of a Fuel Cell System. M. Fiacchini, T operation of a fuel cell system is presented. The aim of the control design is to guarantee that the oxygen control to a fuel cell plant is presented. The fuel cell, located in the laboratory of the Department

  18. Modelling of Stochastic Hybrid Systems with Applications to Accident Risk Assessment

    E-Print Network [OSTI]

    Del Moral , Pierre

    Modelling of Stochastic Hybrid Systems with Applications to Accident Risk Assessment #12;The SYSTEMS WITH APPLICATIONS TO ACCIDENT RISK ASSESSMENT DISSERTATION to obtain the doctor's degree promotor Prof. dr. A. Bagchi #12;Contents 1 Introduction 3 1.1 Accident risk assessment

  19. Comparative study of State Estimation of Fuel Cell Hybrid System Using UKF and EKF

    E-Print Network [OSTI]

    Foss, Bjarne A.

    Cell (SOFC) combined with Gas Turbine (GT) hybrid system is described and system level modeling of the most promising fuel cell technologies is the Solid Oxide Fuel Cell (SOFC) due to its solid state design and internal reforming of gaseous fuels, in addition to its high efficiency. The SOFC converts the chemical

  20. Interim Human Factors Guidance for Hybrid and Digital I&C System

    SciTech Connect (OSTI)

    J.Naser, G.Morris

    2003-08-15

    OAK- B135 To help nuclear power plant operators and suppliers plan, specify, design and implement the modernization of control rooms and other HSI in a way that takes advantage of digital systems and HSI technologies, reflects practical constraints associated with modernizing existing control rooms and I&C systems, and addresses issues associated with hybrid control room HSI.

  1. Mechanically-mediated optical response in hybrid opto-electromechanical systems

    E-Print Network [OSTI]

    Cheng Jiang; Yuanshun Cui; Hongxiang Liu; Guibin Chen

    2014-04-15

    We theoretically investigate the analog of electromagnetically induced transparency, absorption and parametric amplification in a hybrid opto-electromechanical system consisting of an optical cavity and a microwave cavity coupled to a common nanomechanical resonator. When the two cavity modes are driven on their respective red sidebands by two pump beams and a probe beam is applied to the optical cavity to monitor the optical response of the hybrid system, we find that a transparency window appears in the probe transmission spectrum due to destructive interference. When the optical cavity is pumped on its blue sideband, the analog of electromagnetically induced absorption and parametric amplification occur due to constructive interference.

  2. Mechanically-mediated optical response in hybrid opto-electromechanical systems

    E-Print Network [OSTI]

    Jiang, Cheng; Liu, Hongxiang; Chen, Guibin

    2014-01-01

    We theoretically investigate the analog of electromagnetically induced transparency, absorption and parametric amplification in a hybrid opto-electromechanical system consisting of an optical cavity and a microwave cavity coupled to a common nanomechanical resonator. When the two cavity modes are driven on their respective red sidebands by two pump beams and a probe beam is applied to the optical cavity to monitor the optical response of the hybrid system, we find that a transparency window appears in the probe transmission spectrum due to destructive interference. When the optical cavity is pumped on its blue sideband, the analog of electromagnetically induced absorption and parametric amplification occur due to constructive interference.

  3. Summary Report of the INL-JISEA Workshop on Nuclear Hybrid Energy Systems

    SciTech Connect (OSTI)

    Antkowiak, M.; Ruth, M.; Boardman, R.; Bragg-Sitton, S.; Cherry, R.; Shunn, L.

    2012-07-01

    The Institute for Nuclear Energy Science and Technology (INEST) and the Joint Institute for Strategic Energy Analysis (JISEA) co-sponsored an international workshop to identify research topics important in advancing the potential use of hybrid systems with a specific focus on nuclear-renewable hybrid systems. The workshop included presentations ranging from energy challenges and research and development directions being pursued by nations to multiple options for hybrid systems. Those options include one that is being commercialized to other opportunities and analysis results quantifying them. The workshop also involved two breakout sessions--one focused on thermal energy management issues especially at unit-operation scale and the second focused on system operations issues including system controls, regulatory issues, technical and economic analysis, and market challenges. A discussion involving the full group focused on more general issues such as societal involvement and participation. Key criteria for selecting hybrid energy system projects and metrics for comparing them were also identified by the full group.

  4. Optimal Control of Hybrid Systems in Air Traffic Applications

    E-Print Network [OSTI]

    Kamgarpour, Maryam

    2011-01-01

    optimal control of nonlinear dynamical systems [25, 26, 27].constrained nonlinear switched dynamical systems,” in Hybridwe focus on nonlinear switched dynamical systems. These

  5. Combustion flame-plasma hybrid reactor systems, and chemical reactant sources

    DOE Patents [OSTI]

    Kong, Peter C

    2013-11-26

    Combustion flame-plasma hybrid reactor systems, chemical reactant sources, and related methods are disclosed. In one embodiment, a combustion flame-plasma hybrid reactor system comprising a reaction chamber, a combustion torch positioned to direct a flame into the reaction chamber, and one or more reactant feed assemblies configured to electrically energize at least one electrically conductive solid reactant structure to form a plasma and feed each electrically conductive solid reactant structure into the plasma to form at least one product is disclosed. In an additional embodiment, a chemical reactant source for a combustion flame-plasma hybrid reactor comprising an elongated electrically conductive reactant structure consisting essentially of at least one chemical reactant is disclosed. In further embodiments, methods of forming a chemical reactant source and methods of chemically converting at least one reactant into at least one product are disclosed.

  6. A "Hybrid" Approach for Synthesizing Optimal Controllers of Hybrid Systems: A Case Study of the Oil Pump Industrial Example

    E-Print Network [OSTI]

    Zhao, Hengjun; Kapur, Deepak; Larsen, Kim G

    2012-01-01

    In this paper, we propose an approach to reduce the optimal controller synthesis problem of hybrid systems to quantifier elimination; furthermore, we also show how to combine quantifier elimination with numerical computation in order to make it more scalable but at the same time, keep arising errors due to discretization manageable and within bounds. A major advantage of our approach is not only that it avoids errors due to numerical computation, but it also gives a better optimal controller. In order to illustrate our approach, we use the real industrial example of an oil pump provided by the German company HYDAC within the European project Quasimodo as a case study throughout this paper, and show that our method improves (up to 7.5%) the results reported in [3] based on game theory and model checking.

  7. Positive exchange bias and upward magnetic relaxation in a Fe-film/CoO-nanoparticle hybrid system

    E-Print Network [OSTI]

    Krishnan, Kannan M.

    Positive exchange bias and upward magnetic relaxation in a Fe-film/CoO- nanoparticle hybrid system exchange bias and upward magnetic relaxation in a Fe-film/CoO-nanoparticle hybrid system Wei Zhang) Heat-induced damping modification in yttrium iron garnet/platinum hetero-structures Appl. Phys. Lett

  8. Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

    E-Print Network [OSTI]

    Howison, Mark

    2010-01-01

    W. , and Childs, H. (2010) MPI-hybrid parallelism for volumeHybrid Parallelism for Volume Rendering on Large, Multi-corecharacteristics of “hybrid” parallel program- ming and

  9. Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

    E-Print Network [OSTI]

    Howison, Mark

    2010-01-01

    Hybrid Parallelism for Volume Rendering on Large, Multi-corendings indicate that the hybrid-parallel implementation, atpassing against a “hybrid” parallel im- plementation, which

  10. Recovery act. Development of design and simulation tool for hybrid geothermal heat pump system

    SciTech Connect (OSTI)

    Wang, Shaojie; Ellis, Dan

    2014-05-29

    The ground source heat pump (GSHP) system is one of the most energy efficient HVAC technologies in the current market. However, the heat imbalance may degrade the ability of the ground loop heat exchanger (GLHX) to absorb or reject heat. The hybrid GSHP system, which combines a geothermal well field with a supplemental boiler or cooling tower, can balance the loads imposed on the ground loop heat exchangers to minimize its size while retaining superior energy efficiency. This paper presents a recent simulation-based study with an intention to compare multiple common control strategies used in hybrid GSHP systems, including fixed setpoint, outside air reset, load reset, and wetbulb reset. A small office in Oklahoma City conditioned by a hybrid GSHP system was simulated with the latest version of eQUEST 3.7[1]. The simulation results reveal that the hybrid GSHP system has the excellent capability to meet the cooling and heating setpoints during the occupied hours, balance thermal loads on the ground loop, as well as improve the thermal comfort of the occupants with the undersized well field.

  11. Evaluation of the 2010 Toyota Prius Hybrid Synergy Drive System

    SciTech Connect (OSTI)

    Burress, Timothy A; Campbell, Steven L; Coomer, Chester; Ayers, Curtis William; Wereszczak, Andrew A; Cunningham, Joseph Philip; Marlino, Laura D; Seiber, Larry Eugene; Lin, Hua-Tay

    2011-03-01

    Subsystems of the 2010 Toyota Prius hybrid electric vehicle (HEV) were studied and tested as part of an intensive benchmarking effort carried out to produce detailed information concerning the current state of nondomestic alternative vehicle technologies. Feedback provided by benchmarking efforts is particularly useful to partners of the Vehicle Technologies collaborative research program as it is essential in establishing reasonable yet challenging programmatic goals which facilitate development of competitive technologies. The competitive nature set forth by the Vehicle Technologies Program (VTP) not only promotes energy independence and economic stability, it also advocates the advancement of alternative vehicle technologies in an overall global perspective. These technologies greatly facilitate the potential to reduce dependency on depleting natural resources and mitigate harmful impacts of transportation upon the environment.

  12. Signal and System Theory II, BSc, Winter 2008 Automatic Control Laboratory D-ITET

    E-Print Network [OSTI]

    Lygeros, John

    Signal and System Theory II, BSc, Winter 2008 Automatic Control Laboratory D-ITET ETH Zurich Winter happens to the state as t using the final value theorem. 1 #12;Signal and System Theory II, BSc, Winter T seconds. Do you believe her? Justify your answer. 2 #12;Signal and System Theory II, BSc, Winter 2008

  13. Designing a Residential Hybrid Electrical Energy Storage System Based on the Energy Buffering Strategy

    E-Print Network [OSTI]

    Pedram, Massoud

    energy price during peak hours for residential users. Moreover, recent research on smart grid proposesDesigning a Residential Hybrid Electrical Energy Storage System Based on the Energy Buffering companies generally raise electrical energy price during periods of high load demand. A grid

  14. Stresa, Italy, 26-28 April 2006 THERMOELECTRIC AND MICROBATTERY HYBRID SYSTEM WITH ITS POWER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    change depending on the outside conditions) and required by the thin film solid state battery developed. It consists in hybriding an energy storage system (thin film solid state battery control charge of the battery by the thermogenerator and discharge of the battery by the load, i

  15. STOCHASTIC HYBRID SYSTEMS WITH RENEWAL TRANSITIONS: MOMENT ANALYSIS WITH APPLICATION TO

    E-Print Network [OSTI]

    Hespanha, João Pedro

    STOCHASTIC HYBRID SYSTEMS WITH RENEWAL TRANSITIONS: MOMENT ANALYSIS WITH APPLICATION TO NETWORKED of the state at transition times. As surveyed in [1], various models of SHSs [2], [3], [4] have been proposed that combines the transition times and the discrete mode is typically called a Markov renewal process [9], which

  16. Hybrid Generation Systems Planning Expansion Forecast: A Critical State of the Art Review

    E-Print Network [OSTI]

    Brest, Université de

    renewable energy resources are random and weather/climatic conditions-dependant. In this challenging context technical and economical constraints. Index Terms--Hybrid energy systems, renewable power generation-friendly nature (i.e. renewable energies). Although renewable energy penetration in electricity is expected

  17. GAS ANALYSIS SYSTEM COMPOSED OF A SOLID-STATE SENSOR ARRAY AND HYBRID NEURAL NETWORK

    E-Print Network [OSTI]

    Osowski, Stanislaw

    1 GAS ANALYSIS SYSTEM COMPOSED OF A SOLID-STATE SENSOR ARRAY AND HYBRID NEURAL NETWORK STRUCTURE of the solid state sensor array used for the gas analysis. The applied neural network is composed of two parts of the gas components. The obtained results have shown that the array of partially selective sensors

  18. Optimal Design of Hybrid Energy System with PV/ Wind Turbine/ Storage: A Case Study

    E-Print Network [OSTI]

    Wierman, Adam

    Optimal Design of Hybrid Energy System with PV/ Wind Turbine/ Storage: A Case Study Rui Huang with photovoltaic (PV) arrays, wind turbines, and battery storage is designed based on empirical weather and load with renewable resources such as solar and wind power, supplemented with battery storage in a case study. One

  19. Lessons Learned IKEA Furniture Store Hybrid GSHP System Lessons Learned IKEA Furniture Store

    E-Print Network [OSTI]

    packaged WA heat pumps, 1.5 to 6.0 tons · Twenty six hydronic air handlers ­ 1,000 to 18,400 cfm; 24, or when conditions permit · Ice to supplement heat pumps to moderate SCWT (supply chilled water loop to scavenge waste heat 7 #12;Lessons Learned ­ IKEA Furniture Store Hybrid GSHP System Mechanical

  20. Center for Sustainability Hybrid Renewable Energy Systems (HyRES) Laboratory

    E-Print Network [OSTI]

    Lee, Dongwon

    TODAY Center for Sustainability Hybrid Renewable Energy Systems (HyRES) Laboratory Hydrogen fueling State's Center for Sustainability. www.engr.psu.edu/cfs Current Sponsors U.S. Department of Energy (NREL) National Electrical Contracting Association West Penn Power Sustainable Energy Fund Sustainable Energy Fund

  1. Optimal Buffer Management Using Hybrid Systems Wei Zhang and Jianghai Hu

    E-Print Network [OSTI]

    Zhang, Wei

    with some heuristic schemes. I. INTRODUCTION Dynamic buffer management (DBM) is an effective power general DBM problem, where the component to be controlled has multiple power modes. Since different power as a piecewise-constant hybrid system, or more accurately, a multi-rate automata [7]. The DBM problem is thus

  2. DSP Based Ultracapacitor System for Hybrid-Electric Vehicles Juan W. Dixon

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    regenerative braking, or with scarce power capacity for fast acceleration. The ratings of the ultracapacitor, regenerative braking is disconnected from the main computer of the traction drive system, and the battery", "Regenerative Braking". 1. Introduction Throughout the years hybrid vehicles have proofed themselves the shorter

  3. 1. PMU Based RAS for a Hybrid AC/DC System 1.1. Project Team

    E-Print Network [OSTI]

    Li, Husheng

    1. PMU Based RAS for a Hybrid AC/DC System 1.1. Project Team Primary Thrust: Modeling Secondary to be detected more quickly allowing less severe action. This effort focuses on PMU driven response-based RAS from PMU units. The project goals break down into three efforts: · Investigating the possibility

  4. Model Predictive Control for Starvation Prevention in a Hybrid Fuel Cell System1

    E-Print Network [OSTI]

    Stefanopoulou, Anna

    Model Predictive Control for Starvation Prevention in a Hybrid Fuel Cell System1 Ardalan Vahidi 2 current is drawn from a fuel cell, it is critical that the reacted oxygen is replenished rapidly. We formulate distribution of current demand between the fuel cell and the auxiliary source

  5. Accurate hybrid stochastic simulation of a system of coupled chemical or biochemical reactions

    E-Print Network [OSTI]

    Minnesota, University of

    Accurate hybrid stochastic simulation of a system of coupled chemical or biochemical reactions reactions, approximates the fast reactions as a continuous Markov process, using a chemical Langevin multiple slow reactions may occur within a time step of the numerical integration of the chemical Langevin

  6. A Hybrid Energy System Using Cascaded H-bridge Converter , Zhong Du2

    E-Print Network [OSTI]

    Tolbert, Leon M.

    Dept. of ECE, North Carolina State University, Raleigh, NC 27695, zdu@ncsu.edu 3 Dept. of ECE schemes were developed to extract maximum wind power and charge/discharge the battery with fast dynamics proposes a hybrid energy system to integrate the variable-speed wind turbine, fuel cell, and battery using

  7. Optimal Energy Management for a Hybrid Energy Storage System for Electric Vehicles Based on

    E-Print Network [OSTI]

    Noé, Reinhold

    Optimal Energy Management for a Hybrid Energy Storage System for Electric Vehicles Based are used as energy storage. The size of the battery depends not only on the driving range, but also Deterministic Dynamic Programming. To determine an energy management to control the power flows to the storage

  8. Design and Implementation of a Hybrid Energy Supply System for Railway Vehicles

    E-Print Network [OSTI]

    Elsässer, Robert

    of Paderborn, Germany Abstract- An energy supply system based on a hybrid energy storage unit combined technologies make these devices effectively to be employed as energy storage element in electric vehicles and ultracapacitor High energy density batteries are usually applied as the primary energy storage component

  9. Optimal design of hybrid separation systems for in-plant waste reduction

    SciTech Connect (OSTI)

    Hamad, A.A.; Crabtree, E.W.; El-Halwagi, M.M.; Garrison, G.W.

    1996-12-31

    A general procedure for using hybrid separation systems to prevent pollution is presented. The design procedure integrates segregation, interception, and recycle. A systematic method developed to identify the optimal design combination is illustrated through a case study. The case study presented is the removal of cresol from aqueous wastes in a tricresyl phosphate plant. 21 refs., 4 figs.

  10. Battery-Supercapacitor Hybrid System for High-Rate Pulsed Load Applications

    E-Print Network [OSTI]

    Pedram, Massoud

    Battery-Supercapacitor Hybrid System for High-Rate Pulsed Load Applications Donghwa Shin, Younghyun--Modern batteries (e.g., Li-ion batteries) provide high discharge efficiency, but the rate capacity effect in these batteries drastically decreases the discharge efficiency as the load current increases. Electric double

  11. Lattice QCD computation of the colour fields for the static hybrid quark-gluon-antiquark system, and microscopic study of the Casimir scaling

    E-Print Network [OSTI]

    M. Cardoso; N. Cardoso; P. Bicudo

    2009-12-16

    The chromoelectric and chromomagnetic fields, created by a static gluon-quark-antiquark system, are computed in quenched SU(3) lattice QCD, in a $24^3\\times 48$ lattice at $\\beta=6.2$ and $a=0.07261(85) fm$. We compute the hybrid Wilson Loop with two spatial geometries, one with a U shape and another with an L shape. The particular cases of the two gluon glueball and quark-antiquark are also studied, and the Casimir scaling is investigated in a microscopic perspective. This microscopic study of the colour fields is relevant to understand the structure of hadrons, in particular of the hybrid excitation of mesons. This also contributes to understand confinement with flux tubes and to discriminate between the models of fundamental versus adjoint confining strings, analogous to type-II and type-I superconductivity.

  12. Urban Integrated Industrial Cogeneration Systems Analysis. Phase II final report

    SciTech Connect (OSTI)

    Not Available

    1984-01-01

    Through the Urban Integrated Industrial Cogeneration Systems Analysis (UIICSA), the City of Chicago embarked upon an ambitious effort to identify the measure the overall industrial cogeneration market in the city and to evaluate in detail the most promising market opportunities. This report discusses the background of the work completed during Phase II of the UIICSA and presents the results of economic feasibility studies conducted for three potential cogeneration sites in Chicago. Phase II focused on the feasibility of cogeneration at the three most promising sites: the Stockyards and Calumet industrial areas, and the Ford City commercial/industrial complex. Each feasibility case study considered the energy load requirements of the existing facilities at the site and the potential for attracting and serving new growth in the area. Alternative fuels and technologies, and ownership and financing options were also incorporated into the case studies. Finally, site specific considerations such as development incentives, zoning and building code restrictions and environmental requirements were investigated.

  13. Observation of a phononic Mollow triplet in a hybrid spin-nanomechanical system

    E-Print Network [OSTI]

    Benjamin Pigeau; Sven Rohr; Laure Mercier de Lépinay; Arnaud Gloppe; Vincent Jacques; Olivier Arcizet

    2015-02-25

    Reminiscent of the bound character of a qubit's dynamics confined on the Bloch sphere, the observation of a Mollow triplet in the resonantly driven qubit fluorescence spectrum represents one of the founding signatures of Quantum Electrodynamics. Here we report on its observation in a hybrid spin-nanomechanical system, where a Nitro-gen Vacancy spin qubit is magnetically coupled to the vibrations of a Silicon Carbide nanowire. A resonant microwave field turns the originally parametric hybrid interac-tion into a resonant process, where acoustic phonons are now able to induce transitions between the dressed qubit states, leading to synchronized spin-oscillator dynamics. We further explore the vectorial character of the hybrid coupling to the bidimensional de-formations of the nanowire. The demonstrated microwave assisted synchronization of the spin-oscillator dynamics opens novel perspectives for the exploration of spin-dependent forces, the key-ingredient for quantum state transfer.

  14. Hybrid lean premixing catalytic combustion system for gas turbines

    DOE Patents [OSTI]

    Critchley, Ian L.

    2003-12-09

    A system and method of combusting a hydrocarbon fuel is disclosed. The system combines the accuracy and controllability of an air staging system with the ultra-low emissions achieved by catalytic combustion systems without the need for a pre-heater. The result is a system and method that is mechanically simple and offers ultra-low emissions over a wide range of power levels, fuel properties and ambient operating conditions.

  15. Hybrid 2012 Innovative Hybrid Approaches to the Processing of

    E-Print Network [OSTI]

    EACL 2012 Hybrid 2012 Innovative Hybrid Approaches to the Processing of Textual Data Proceedings@aclweb.org ii #12;Introduction The hybrid approach term covers a large set of situations in which different of the dedicated task. Hybrid approaches are commonly used in various NLP applications (i.e., automatic creation

  16. Hybrid metal organic scintillator materials system and particle detector

    DOE Patents [OSTI]

    Bauer, Christina A.; Allendorf, Mark D.; Doty, F. Patrick; Simmons, Blake A.

    2011-07-26

    We describe the preparation and characterization of two zinc hybrid luminescent structures based on the flexible and emissive linker molecule, trans-(4-R,4'-R') stilbene, where R and R' are mono- or poly-coordinating groups, which retain their luminescence within these solid materials. For example, reaction of trans-4,4'-stilbenedicarboxylic acid and zinc nitrate in the solvent dimethylformamide (DMF) yielded a dense 2-D network featuring zinc in both octahedral and tetrahedral coordination environments connected by trans-stilbene links. Similar reaction in diethylformamide (DEF) at higher temperatures resulted in a porous, 3-D framework structure consisting of two interpenetrating cubic lattices, each featuring basic to zinc carboxylate vertices joined by trans-stilbene, analogous to the isoreticular MOF (IRMOF) series. We demonstrate that the optical properties of both embodiments correlate directly with the local ligand environments observed in the crystal structures. We further demonstrate that these materials produce high luminescent response to proton radiation and high radiation tolerance relative to prior scintillators. These features can be used to create sophisticated scintillating detection sensors.

  17. Hybrid Wind and Solar Electric Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    the grid in remote locations. | Photo courtesy of Dave Parsons. Off-Grid or Stand-Alone Renewable Energy Systems Whether a home solar electric system will work for you depends on...

  18. Hybrid powertrain system including smooth shifting automated transmission

    DOE Patents [OSTI]

    Beaty, Kevin D.; Nellums, Richard A.

    2006-10-24

    A powertrain system is provided that includes a prime mover and a change-gear transmission having an input, at least two gear ratios, and an output. The powertrain system also includes a power shunt configured to route power applied to the transmission by one of the input and the output to the other one of the input and the output. A transmission system and a method for facilitating shifting of a transmission system are also provided.

  19. Upgrade of the SLAC SLED II Pulse Compression System Based on Recent High Power Tests

    SciTech Connect (OSTI)

    Vlieks, A.E.; Fowkes, W.R.; Loewen, R.J.; Tantawi, S.G.; /SLAC

    2011-09-06

    In the Next Linear Collider (NLC) it is expected that the high power rf components be able to handle peak power levels in excess of 400 MW. We present recent results of high power tests designed to investigate the RF breakdown limits of the X-band pulse compression system used at SLAC. (SLED-II). Results of these tests show that both the TE{sub 01}-TE{sub 10} mode converter and the 4-port hybrid have a maximum useful power limit of 220-250 MW. Based on these tests, modifications of these components have been undertaken to improve their peak field handling capability. Results of these modifications will be presented. As part of an international effort to develop a new 0.5-1.5 TeV electron-positron linear collider for the 21st century, SLAC has been working towards a design, referred to as 'The Next Linear Collider' (NLC), which will operate at 11.424 GHz and utilize 50-75 MW klystrons as rf power sources. One of the major challenges in this design, or any other design, is how to generate and efficiently transport extremely high rf power from a source to an accelerator structure. SLAC has been investigating various methods of 'pulse compressing' a relatively wide rf pulse ({ge} 1 {mu}s) from a klystron into a narrower, but more intense, pulse. Currently a SLED-II pulse compression scheme is being used at SLAC in the NLC Test Accelerator (NLCTA) and in the Accelerator Structures Test Area (ASTA) to provide high rf power for accelerator and component testing. In ASTA, a 1.05 {mu}s pulse from a 50 MW klystron was successfully pulse compressed to 205 MW with a pulse width of 150 ns. Since operation in NLC will require generating and transporting rf power in excess of 400 MW it was decided to test the breakdown limits of the SLED-II rf components in ASTA with rf power up to the maximum available of 400 MW. This required the combining of power from two 50 MW klystrons and feeding the summed power into the SLED-II pulse compressor. Results from this experiment demonstrated that two of the key components of SLED-II; the Magic Tee and the 'Flower Petal' mode converter (converts between TE{sub 10} rectangular and TE{sub 01} circular modes), were not robust enough at higher power levels. Because of this, a major effort is underway to upgrade the existing devices to operate stably at the higher power levels, and also to investigate new components, which have inherently low field enhancement in their design and therefore more robust.

  20. Berry phase and Hannay’s angle in the Born–Oppenheimer hybrid systems

    SciTech Connect (OSTI)

    Liu, H.D. [National Laboratory of Science and Technology on Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)] [National Laboratory of Science and Technology on Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Yi, X.X. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)] [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Fu, L.B., E-mail: lbfu.iapcm@gmail.com [National Laboratory of Science and Technology on Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100084 (China)

    2013-12-15

    In this paper, we investigate the Berry phase and Hannay’s angle in the Born–Oppenheimer (BO) hybrid systems and obtain their algebraic expressions in terms of one form connection. The semiclassical relation of Berry phase and Hannay’s angle is discussed. We find that, besides the usual connection term, the Berry phase of quantum BO composite system also contains a novel term brought forth by the coupling induced effective gauge potential. This quantum modification can be viewed as an effective Aharonov–Bohm effect. Moreover, the similar phenomenon is founded in Hannay’s angle of classical BO composite system, which indicates that the Berry phase and Hannay’s angle possess the same relation as the usual one. An example is used to illustrate our theory. This scheme can be used to generate artificial gauge potentials for neutral atoms. Besides, the quantum–classical hybrid BO system is also studied to compare with the results in full quantum and full classical composite systems. -- Highlights: •We have derived the Berry phase and Hannay’s angle in BO hybrid systems. •The Berry phase contains a novel term brought by the effective gauge potential. •This mechanism can be used to generate artificial gauge potentials for neutral atoms. •The relation between Hannay’s angles and Berry phases is established.

  1. Hybrid Zinc Phthalocyanine/Zinc Oxide System for Photovoltaic De-vices: a DFT and TDDFPT Theoretical Investigation

    E-Print Network [OSTI]

    Giannozzi, Paolo

    Hybrid Zinc Phthalocyanine/Zinc Oxide System for Photovoltaic De- vices: a DFT and TDDFPT in the functioning of hybrid photovoltaic devices. The molecule-surface interactions are also characterized-inorganic photovoltaic devices (OPV and HPV, respectively) have received enormous re- search attention in the last years

  2. Hybrid robust predictive optimization method of power system dispatch

    DOE Patents [OSTI]

    Chandra, Ramu Sharat (Niskayuna, NY); Liu, Yan (Ballston Lake, NY); Bose, Sumit (Niskayuna, NY); de Bedout, Juan Manuel (West Glenville, NY)

    2011-08-02

    A method of power system dispatch control solves power system dispatch problems by integrating a larger variety of generation, load and storage assets, including without limitation, combined heat and power (CHP) units, renewable generation with forecasting, controllable loads, electric, thermal and water energy storage. The method employs a predictive algorithm to dynamically schedule different assets in order to achieve global optimization and maintain the system normal operation.

  3. In-Use Performance Comparison of Hybrid Electric, CNG, and Diesel Buses at New York City Transit

    SciTech Connect (OSTI)

    Barnitt, R. A.

    2008-06-01

    The National Renewable Energy Laboratory (NREL) evaluated the performance of diesel, compressed natural gas (CNG), and hybrid electric (equipped with BAE Systems? HybriDrive propulsion system) transit buses at New York City Transit (NYCT). CNG, Gen I and Gen II hybrid electric propulsion systems were compared on fuel economy, maintenance and operating costs per mile, and reliability.

  4. A 10kW photovoltaic/hybrid system for Pinnacles National Monument

    SciTech Connect (OSTI)

    Ball, T.J. [Applied Power Corp., Lacey, WA (United States); DeNio, D. [National Park Service, Denver, CO (United States). Denver Service Center

    1997-12-31

    Visitors to the Chaparral area of the Pinnacles National Monument now can enjoy this beautiful section of the park without the constant drone of diesel generators, thanks to a recently installed photovoltaic/hybrid system. Electrical power had been supplied by two 100 KW diesel generators operating 24 hours per day. The diesels were running lightly loaded resulting in poor efficiency and high operating cost. Applied Power Corporation under contract with the National Park Service designed and supplied a 10 KW photovoltaic array, 200 KW hr battery bank and 24 KW of inverters to power the maintenance facility, visitor center and ranger residences. A new 20 KW propane generator was installed to provide supplemental power, totally eliminating the storage and transport of diesel fuel at this site. The Pinnacles PV/Hybrid system was brought on line in early 1996 and the park is now benefiting from the cost savings associated with the system.

  5. Reactor Subsystem Simulation for Nuclear Hybrid Energy Systems

    SciTech Connect (OSTI)

    Shannon Bragg-Sitton; J. Michael Doster; Alan Rominger

    2012-09-01

    Preliminary system models have been developed by Idaho National Laboratory researchers and are currently being enhanced to assess integrated system performance given multiple sources (e.g., nuclear + wind) and multiple applications (i.e., electricity + process heat). Initial efforts to integrate a Fortran-based simulation of a small modular reactor (SMR) with the balance of plant model have been completed in FY12. This initial effort takes advantage of an existing SMR model developed at North Carolina State University to provide initial integrated system simulation for a relatively low cost. The SMR subsystem simulation details are discussed in this report.

  6. An Analysis of Hybrid Life Support Systems for Sustainable Habitats

    E-Print Network [OSTI]

    Shaw, Margaret Miller

    2014-01-01

    The design of sustainable habitats on Earth, on other planetary surfaces, and in space, has motivated strategic planning with respect to life support (LS) system technology development and habitat design. Such planning ...

  7. Hybrid energy storage systems utilizing redox active organic compounds

    DOE Patents [OSTI]

    Wang, Wei; Xu, Wu; Li, Liyu; Yang, Zhenguo

    2015-09-08

    Redox flow batteries (RFB) have attracted considerable interest due to their ability to store large amounts of power and energy. Non-aqueous energy storage systems that utilize at least some aspects of RFB systems are attractive because they can offer an expansion of the operating potential window, which can improve on the system energy and power densities. One example of such systems has a separator separating first and second electrodes. The first electrode includes a first current collector and volume containing a first active material. The second electrode includes a second current collector and volume containing a second active material. During operation, the first source provides a flow of first active material to the first volume. The first active material includes a redox active organic compound dissolved in a non-aqueous, liquid electrolyte and the second active material includes a redox active metal.

  8. Hybrid membrane--PSA system for separating oxygen from air

    DOE Patents [OSTI]

    Staiger, Chad L. (Albuquerque, NM); Vaughn, Mark R. (Albuquerque, NM); Miller, A. Keith (Albuquerque, NM); Cornelius, Christopher J. (Blackburg, VA)

    2011-01-25

    A portable, non-cryogenic, oxygen generation system capable of delivering oxygen gas at purities greater than 98% and flow rates of 15 L/min or more is described. The system consists of two major components. The first component is a high efficiency membrane capable of separating argon and a portion of the nitrogen content from air, yielding an oxygen-enriched permeate flow. This is then fed to the second component, a pressure swing adsorption (PSA) unit utilizing a commercially available, but specifically formulated zeolite compound to remove the remainder of the nitrogen from the flow. The system is a unique gas separation system that can operate at ambient temperatures, for producing high purity oxygen for various applications (medical, refining, chemical production, enhanced combustion, fuel cells, etc . . . ) and represents a significant advance compared to current technologies.

  9. : Differential Temporal Dynamic Logic with Nested Temporalities for Hybrid Systems

    E-Print Network [OSTI]

    Platzer, André

    A major task of computer science is to program objects of our physical world: cars, trains, airplanes look at a satellite with position x trying to leave the solar system, avoiding planets. To simplify

  10. BATMAN: Maximizing Bandwidth Utilization of Hybrid Memory Systems

    E-Print Network [OSTI]

    Qureshi, Moinuddin K.

    ) compared to commodity DRAM (i.e. DDR3, and DDR4 [4, 5]). Therefore, they are un- able to completely replace-Memory System or a Tiered-Memory System. 0 20 40 60 80 25 50 75 100 125 150 175 Latency(ns) Bandwidth (GB/s) DDR4(2014) HBM(2014) HMC(2014) HBM HMC DDR3 DDR4 DDR3(2013) Fig. 1. Latency and bandwidth

  11. The NSLS-II Multilayer Laue Lens Deposition System

    SciTech Connect (OSTI)

    Conley, R.; Bouet, N.; Biancarosa, J.; Shen, Q.; Boas, L.; Feraca, J.; Rosenbaum, L.

    2009-08-02

    The NSLS-II[1] program has a requirement for an unprecedented level of x-ray nanofocusing and has selected the wedged multilayer Laue lens[2,3] (MLL) as the optic of choice to meet this goal. In order to fabricate the MLL a deposition system is required that is capable of depositing depth-graded and laterally-graded multilayers with precise thickness control over many thousands of layers, with total film growth in one run up to 100?m thick or greater. This machine design expounds on the positive features of a rotary deposition system[4] constructed previously for MLLs and will contain multiple stationary, horizontally-oriented magnetron sources where a transport will move a substrate back and forth in a linear fashion over shaped apertures at well-defined velocities to affect a multilayer coating.

  12. A hybrid inventory management system respondingto regular demand and surge demand

    SciTech Connect (OSTI)

    Mohammad S. Roni; Mingzhou Jin; Sandra D. Eksioglu

    2014-06-01

    This paper proposes a hybrid policy for a stochastic inventory system facing regular demand and surge demand. The combination of two different demand patterns can be observed in many areas, such as healthcare inventory and humanitarian supply chain management. The surge demand has a lower arrival rate but higher demand volume per arrival. The solution approach proposed in this paper incorporates the level crossing method and mixed integer programming technique to optimize the hybrid inventory policy with both regular orders and emergency orders. The level crossing method is applied to obtain the equilibrium distributions of inventory levels under a given policy. The model is further transformed into a mixed integer program to identify an optimal hybrid policy. A sensitivity analysis is conducted to investigate the impact of parameters on the optimal inventory policy and minimum cost. Numerical results clearly show the benefit of using the proposed hybrid inventory model. The model and solution approach could help healthcare providers or humanitarian logistics providers in managing their emergency supplies in responding to surge demands.

  13. Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

    SciTech Connect (OSTI)

    Howison, Mark; Bethel, E. Wes; Childs, Hank

    2010-07-12

    This work studies the performance and scalability characteristics of"hybrid'"parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

  14. MPI-hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

    SciTech Connect (OSTI)

    Howison, Mark; Bethel, E. Wes; Childs, Hank

    2010-03-20

    This work studies the performance and scalability characteristics of"hybrid'" parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

  15. Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

    SciTech Connect (OSTI)

    Howison, Mark; Bethel, E. Wes; Childs, Hank

    2010-06-14

    This work studies the performance and scalability characteristics of"hybrid" parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 128-core chips coming soon, we wish to better understand how algorithmic and parallel programming choices impact performance and scalability on large, distributed-memory multi-core systems. Our findings indicate that the hybrid-parallel implementation, at levels of concurrency ranging from 1,728 to 216,000, performs better, uses a smaller absolute memory footprint, and consumes less communication bandwidth than the traditional, MPI-only implementation.

  16. LiCl Dehumidifier LiBr absorption chiller hybrid air conditioning system with energy recovery

    DOE Patents [OSTI]

    Ko, Suk M. (Huntsville, AL)

    1980-01-01

    This invention relates to a hybrid air conditioning system that combines a solar powered LiCl dehumidifier with a LiBr absorption chiller. The desiccant dehumidifier removes the latent load by absorbing moisture from the air, and the sensible load is removed by the absorption chiller. The desiccant dehumidifier is coupled to a regenerator and the desiccant in the regenerator is heated by solar heated hot water to drive the moisture therefrom before being fed back to the dehumidifier. The heat of vaporization expended in the desiccant regenerator is recovered and used to partially preheat the driving fluid of the absorption chiller, thus substantially improving the overall COP of the hybrid system.

  17. A notion of passivity for hybrid systems Milos Zefran

    E-Print Network [OSTI]

    Sontag, Eduardo

    on linear circuit the- ory was used for stability analysis in [7]. The most general stability results of hap- tic displays interacting with linear [5] and passive [6] en- vironments. Passivity analysis based Introduction In this paper we are primarily concerned with the stability analysis of systems that involve

  18. Hybrid Energy Storage System Integration For Vehicles , Hai Zhou

    E-Print Network [OSTI]

    Zhou, Hai

    . Existing in-vehicle Lithium-ion battery systems are bulky, expensive, and unre- liable. Energy storage- plementary energy storage technologies, e.g., Lithium-ion batteries and ultracapacitors. Using physical-drive vehicles. Based on an ESS modeling solution that considers major run-time and long-term battery effects

  19. Development of hybrid 3-D hydrological modeling for the NCAR Community Earth System Model (CESM)

    SciTech Connect (OSTI)

    Zeng, Xubin; Troch, Peter; Pelletier, Jon; Niu, Guo-Yue; Gochis, David

    2015-11-15

    This is the Final Report of our four-year (3-year plus one-year no cost extension) collaborative project between the University of Arizona (UA) and the National Center for Atmospheric Research (NCAR). The overall objective of our project is to develop and evaluate the first hybrid 3-D hydrological model with a horizontal grid spacing of 1 km for the NCAR Community Earth System Model (CESM).

  20. Methods of chemically converting first materials to second materials utilizing hybrid-plasma systems

    DOE Patents [OSTI]

    Kong, Peter C. (Idaho Falls, ID); Grandy, Jon D. (Idaho Falls, ID)

    2002-01-01

    In one aspect, the invention encompasses a method of chemically converting a first material to a second material. A first plasma and a second plasma are formed, and the first plasma is in fluid communication with the second plasma. The second plasma comprises activated hydrogen and oxygen, and is formed from a water vapor. A first material is flowed into the first plasma to at least partially ionize at least a portion of the first material. The at least partially ionized first material is flowed into the second plasma to react at least some components of the first material with at least one of the activated hydrogen and activated oxygen. Such converts at least some of the first material to a second material. In another aspect, the invention encompasses a method of forming a synthetic gas by flowing a hydrocarbon-containing material into a hybrid-plasma system. In yet another aspect, the invention encompasses a method of degrading a hydrocarbon-containing material by flowing such material into a hybrid-plasma system. In yet another aspect, the invention encompasses a method of releasing an inorganic component of a complex comprising the inorganic component and an other component, wherein the complex is flowed through a hybrid-plasma system.

  1. An Excursion-Theoretic Approach to Stability of Discrete-Time Stochastic Hybrid Systems

    SciTech Connect (OSTI)

    Chatterjee, Debasish, E-mail: chatterjee@control.ee.ethz.ch [ETH Zuerich, ETL I19 (Switzerland); Pal, Soumik, E-mail: soumik@math.washington.edu [University of Washington, Department of Mathematics (United States)

    2011-04-15

    We address stability of a class of Markovian discrete-time stochastic hybrid systems. This class of systems is characterized by the state-space of the system being partitioned into a safe or target set and its exterior, and the dynamics of the system being different in each domain. We give conditions for L{sub 1}-boundedness of Lyapunov functions based on certain negative drift conditions outside the target set, together with some more minor assumptions. We then apply our results to a wide class of randomly switched systems (or iterated function systems), for which we give conditions for global asymptotic stability almost surely and in L{sub 1}. The systems need not be time-homogeneous, and our results apply to certain systems for which functional-analytic or martingale-based estimates are difficult or impossible to get.

  2. Blade System Design Study. Part II, final project report (GEC).

    SciTech Connect (OSTI)

    Griffin, Dayton A.

    2009-05-01

    As part of the U.S. Department of Energy's Low Wind Speed Turbine program, Global Energy Concepts LLC (GEC)1 has studied alternative composite materials for wind turbine blades in the multi-megawatt size range. This work in one of the Blade System Design Studies (BSDS) funded through Sandia National Laboratories. The BSDS program was conducted in two phases. In the Part I BSDS, GEC assessed candidate innovations in composite materials, manufacturing processes, and structural configurations. GEC also made recommendations for testing composite coupons, details, assemblies, and blade substructures to be carried out in the Part II study (BSDS-II). The BSDS-II contract period began in May 2003, and testing was initiated in June 2004. The current report summarizes the results from the BSDS-II test program. Composite materials evaluated include carbon fiber in both pre-impregnated and vacuum-assisted resin transfer molding (VARTM) forms. Initial thin-coupon static testing included a wide range of parameters, including variation in manufacturer, fiber tow size, fabric architecture, and resin type. A smaller set of these materials and process types was also evaluated in thin-coupon fatigue testing, and in ply-drop and ply-transition panels. The majority of materials used epoxy resin, with vinyl ester (VE) resin also used for selected cases. Late in the project, testing of unidirectional fiberglass was added to provide an updated baseline against which to evaluate the carbon material performance. Numerous unidirectional carbon fabrics were considered for evaluation with VARTM infusion. All but one fabric style considered suffered either from poor infusibility or waviness of fibers combined with poor compaction. The exception was a triaxial carbon-fiberglass fabric produced by SAERTEX. This fabric became the primary choice for infused articles throughout the test program. The generally positive results obtained in this program for the SAERTEX material have led to its being used in innovative prototype blades of 9-m and 30-m length, as well as other non-wind related structures.

  3. Optimization of Electric Power Systems for Off-Grid Domestic Applications: An Argument for Wind/Photovoltaic Hybrids

    SciTech Connect (OSTI)

    Jennings, W.; Green, J.

    2001-01-01

    The purpose of this research was to determine the optimal configuration of home power systems relevant to different regions in the United States. The hypothesis was that, regardless of region, the optimal system would be a hybrid incorporating wind technology, versus a photovoltaic hybrid system without the use of wind technology. The method used in this research was HOMER, the Hybrid Optimization Model for Electric Renewables. HOMER is a computer program that optimizes electrical configurations under user-defined circumstances. According to HOMER, the optimal system for the four regions studied (Kansas, Massachusetts, Oregon, and Arizona) was a hybrid incorporating wind technology. The cost differences between these regions, however, were dependent upon regional renewable resources. Future studies will be necessary, as it is difficult to estimate meteorological impacts for other regions.

  4. Performance of a small solar-powered hybrid membrane system for remote communities under varying feedwater salinities 

    E-Print Network [OSTI]

    Schäfer, Andrea; Remy, C.; Richards, B.S.

    2004-01-01

    An estimated 1 billion people are living both without access to clean drinking water or electricity. The small photovoltaic (PV)-powered hybrid membrane system described here is designed to address the plight of some ...

  5. Renewable energy powered membrane technology. 2. The effect of energy fluctuations on performance of a photovoltaic hybrid membrane system 

    E-Print Network [OSTI]

    Richards, B.S.; Capão, D.P.S.; Schäfer, Andrea

    2008-01-01

    This paper reports on the performance fluctuations during the operation of a batteryless hybrid ultrafiltration – nanofiltration / reverse osmosis (UF-NF/RO) membrane desalination system powered by photovoltaics treating ...

  6. Visual Information Systems Pr. Robert Laurini Chapter II: GIS: Data Modeling 1

    E-Print Network [OSTI]

    Laurini, Robert

    Visual Information Systems Pr. Robert Laurini Chapter II: GIS: Data Modeling 1 Chapter II sciences · Archaeology · Big real estate planning and management · etc GIS: Data Modeling · 2. Robert Laurini Chapter II: GIS: Data Modeling 2 2.1 ­ Geographic Data Modeling · Discrete Objects

  7. Hybrid Power System Simulation Model | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energyarea,Magazine JumpEnergyHyEnergy Systems

  8. COMPARATIVE STUDY AMONG HYBRID GROUND SOURCE HEAT PUMP SYSTEM, COMPLETE GROUND SOURCE HEAT PUMP AND CONVENTIONAL HVAC SYSTEM

    SciTech Connect (OSTI)

    Jiang Zhu; Yong X. Tao

    2011-11-01

    In this paper, a hotel with hybrid geothermal heat pump system (HyGSHP) in the Pensacola is selected and simulated by the transient simulation software package TRNSYS [1]. To verify the simulation results, the validations are conducted by using the monthly average entering water temperature, monthly facility consumption data, and etc. And three types of HVAC systems are compared based on the same building model and HVAC system capacity. The results are presented to show the advantages and disadvantages of HyGSHP compared with the other two systems in terms of energy consumptions, life cycle cost analysis.

  9. Hybrid Power Test Bed

    SciTech Connect (OSTI)

    NONE

    1996-06-01

    This document describes efforts by the National Renewable Energy Laboratory to simulate hybrid power systems. Hybrid power systems combine multiple power sources such as wind turbines, photovoltaic (PV) arrays, diesel generators, and battery storage systems. They typically are used in remote areas, away from major electric grids. The Hybrid Power Test Bed is designed to assist the U.S. wind industry in developing and testing hybrid power generation systems. Test bed capabilities, features, and equipment are described.

  10. Hybrid Compton camera/coded aperture imaging system

    DOE Patents [OSTI]

    Mihailescu, Lucian (Livermore, CA); Vetter, Kai M. (Alameda, CA)

    2012-04-10

    A system in one embodiment includes an array of radiation detectors; and an array of imagers positioned behind the array of detectors relative to an expected trajectory of incoming radiation. A method in another embodiment includes detecting incoming radiation with an array of radiation detectors; detecting the incoming radiation with an array of imagers positioned behind the array of detectors relative to a trajectory of the incoming radiation; and performing at least one of Compton imaging using at least the imagers and coded aperture imaging using at least the imagers. A method in yet another embodiment includes detecting incoming radiation with an array of imagers positioned behind an array of detectors relative to a trajectory of the incoming radiation; and performing Compton imaging using at least the imagers.

  11. Modular hybrid plasma reactor and related systems and methods

    DOE Patents [OSTI]

    Kong, Peter C.; Grandy, Jon D.; Detering, Brent A.

    2010-06-22

    A device, method and system for generating a plasma is disclosed wherein an electrical arc is established and the movement of the electrical arc is selectively controlled. In one example, modular units are coupled to one another to collectively define a chamber. Each modular unit may include an electrode and a cathode spaced apart and configured to generate an arc therebetween. A device, such as a magnetic or electromagnetic device, may be used to selectively control the movement of the arc about a longitudinal axis of the chamber. The arcs of individual modules may be individually controlled so as to exhibit similar or dissimilar motions about the longitudinal axis of the chamber. In another embodiment, an inlet structure may be used to selectively define the flow path of matter introduced into the chamber such that it travels in a substantially circular or helical path within the chamber.

  12. Analysis of the spectroscopy of a hybrid system composed of a superconducting flux qubit and diamond NV centers

    E-Print Network [OSTI]

    H. Cai; Y. Matsuzaki; K. Kakuyanagi; H. Toida; X. Zhu; N. Mizuochi; K. Nemoto; K. Semba; W. J. Munro; S. Saito; H. Yamaguchi

    2015-05-28

    A hybrid system that combines the advantages of a superconducting flux qubit and an electron spin ensemble in diamond is one of the promising devices to realize quantum information processing. Exploring the properties of the superconductor diamond system is essential for the efficient use of this device. When we perform spectroscopy of this system, significant power broadening is observed. However, previous models to describe this system are known to be applicable only when the power broadening is negligible. Here, we construct a new approach to analyze this system with strong driving, and succeed to reproduce the spectrum with the power broadening. Our results provide an efficient way to analyze this hybrid system.

  13. II*

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry NaturalPrices1Markets See full Hydrocarbon Gas2 II Now

  14. Development of Diesel Exhaust Aftertreatment System for Tier II Emissions

    SciTech Connect (OSTI)

    Yu, R. C.; Cole, A. S., Stroia, B. J.; Huang, S. C. (Cummins, Inc.); Howden, Kenneth C.; Chalk, Steven (U.S. Dept. of Energy)

    2002-06-01

    Due to their excellent fuel efficiency, reliability, and durability, compression ignition direct injection (CIDI) engines have been used extensively to power almost all highway trucks, urban buses, off-road vehicles, marine carriers, and industrial equipment. CIDI engines burn 35 to 50% less fuel than gasoline engines of comparable size, and they emit far less greenhouse gases (Carbon Dioxides), which have been implicated in global warming. Although the emissions of CIDI engines have been reduced significantly over the last decade, there remains concern with the Nitrogen Oxides (NOX) and Particulate Matter (PM) emission levels. In 2000, the US EPA proposed very stringent emissions standards to be introduced in 2007 along with low sulfur (< 15ppm) diesel fuel. The California Air Resource Board (CARB) has also established the principle that future diesel fueled vehicles should meet the same emissions standards as gasoline fueled vehicles and the EPA followed suit with its Tier II emissions regulations. Meeting the Tier II standards requires NOX and PM emissions to be reduced dramatically. Achieving such low emissions while minimizing fuel economy penalty cannot be done through engine development and fuel reformulation alone, and requires application of NOX and PM aftertreatment control devices. A joint effort was made between Cummins Inc. and the Department of Energy to develop the generic aftertreatment subsystem technologies applicable for Light-Duty Vehicle (LDV) and Light-Duty Truck (LDT) engines. This paper provides an update on the progress of this joint development program. Three NOX reduction technologies including plasmaassisted catalytic NOX reduction (PACR), active lean NOX catalyst (LNC), and adsorber catalyst (AC) technology using intermittent rich conditions for NOX reduction were investigated in parallel in an attempt to select the best NOX control approach for light-duty aftertreatment subsystem integration and development. Investigations included system design and analysis, critical lab/engine experiments, and ranking then selection of NOX control technologies against reliability, up-front cost, fuel economy, service interval/serviceability, and size/weight. The results of the investigations indicate that the best NOX control approach for LDV and LDT applications is a NOX adsorber system. A greater than 83% NOX reduction efficiency is required to achieve 0.07g/mile NOX Tier II vehicle-out emissions. Both active lean NOX and PACR technology are currently not capable of achieving the high conversion efficiency required for Tier II, Bin 5 emissions standards. In this paper, the NOX technology assessment and selection is first reviewed and discussed. Development of the selected NOX technology (NOX adsorber) and PM control are then discussed in more detail. Discussion includes exhaust sulfur management, further adsorber formulation development, reductant screening, diesel particulate filter development & active regeneration, and preliminary test results on the selected integrated SOX trap, NOX adsorber, and diesel particulate filter system over an FTP-75 emissions cycle, and its impact on fuel economy. Finally, the direction of future work for continued advanced aftertreatment technology development is discussed. (SAE Paper SAE-2002-01-1867 © 2002 SAE International. This paper is published on this website with permission from SAE International. As a user of this website, you are permitted to view this paper on-line, download this pdf file and print one copy of this paper at no cost for your use only. The downloaded pdf file and printout of this SAE paper may not be copied, distributed or forwarded to others or for the use of others.)

  15. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System Interim Report

    SciTech Connect (OSTI)

    Ayers, C.W.

    2004-11-23

    Laboratory tests were conducted to evaluate the electrical and mechanical performance of the 2004 Toyota Prius and its hybrid electric drive system. As a hybrid vehicle, the 2004 Prius uses both a gasoline-powered internal combustion engine and a battery-powered electric motor as motive power sources. Innovative algorithms for combining these two power sources results in improved fuel efficiency and reduced emissions compared to traditional automobiles. Initial objectives of the laboratory tests were to measure motor and generator back-electromotive force (emf) voltages and determine gearbox-related power losses over a specified range of shaft speeds and lubricating oil temperatures. Follow-on work will involve additional performance testing of the motor, generator, and inverter. Information contained in this interim report summarizes the test results obtained to date, describes preliminary conclusions and findings, and identifies additional areas for further study.

  16. SIMES: A Simulator for Hybrid Electrical Energy Storage Systems Siyu Yue, Di Zhu, Yanzhi Wang, and Massoud Pedram

    E-Print Network [OSTI]

    Pedram, Massoud

    SIMES: A Simulator for Hybrid Electrical Energy Storage Systems Siyu Yue, Di Zhu, Yanzhi Wang Electrical Energy Storage System, Simulator 1. Introduction An electrical energy storage (EES) system to store a higher grade of energy compared to other energy storage systems since electrical energy has

  17. Nuclear-Renewable Hybrid System Economic Basis for Electricity, Fuel, and Hydrogen

    SciTech Connect (OSTI)

    Charles Forsberg; Steven Aumeier

    2014-04-01

    Concerns about climate change and altering the ocean chemistry are likely to limit the use of fossil fuels. That implies a transition to a low-carbon nuclear-renewable electricity grid. Historically variable electricity demand was met using fossil plants with low capital costs, high operating costs, and substantial greenhouse gas emissions. However, the most easily scalable very-low-emissions generating options, nuclear and non-dispatchable renewables (solar and wind), are capital-intensive technologies with low operating costs that should operate at full capacities to minimize costs. No combination of fully-utilized nuclear and renewables can meet the variable electricity demand. This implies large quantities of expensive excess generating capacity much of the time. In a free market this results in near-zero electricity prices at times of high nuclear renewables output and low electricity demand with electricity revenue collapse. Capital deployment efficiency—the economic benefit derived from energy systems capital investment at a societal level—strongly favors high utilization of these capital-intensive systems, especially if low-carbon nuclear renewables are to replace fossil fuels. Hybrid energy systems are one option for better utilization of these systems that consumes excess energy at times of low prices to make some useful product.The economic basis for development of hybrid energy systems is described for a low-carbon nuclear renewable world where much of the time there are massivequantities of excess energy available from the electric sector.Examples include (1) high-temperature electrolysis to generate hydrogen for non-fossil liquid fuels, direct use as a transport fuel, metal reduction, etc. and (2) biorefineries.Nuclear energy with its concentrated constant heat output may become the enabling technology for economically-viable low-carbon electricity grids because hybrid nuclear systems may provide an economic way to produce dispatachable variable electricity with economic base-load operation of the reactor.

  18. Static potential for the quark-antiquark-gluon hybrid system in lattice QCD

    E-Print Network [OSTI]

    Marco Cardoso; Pedro Bicudo; Orlando Oliveira

    2007-10-09

    The static gluon-quark-antiquark interaction is investigated using lattice QCD techniques. A Wilson loop adequate to the static hybrid three-body system is developed and, using a $24^3 \\times 48$ periodic lattice with $\\beta = 6.2$, the potential energy of the system is measured for different geometries. For the medium range behaviour, when the quarks are far apart, we find a string tension which is compatible with two fundamental strings. On the other hand, when the quark and antiquark are nearby, the string tension is larger than two fundamental strings and is compatible with the Casimir scaling.

  19. Radiation Effects of n-type, Low Resistivity, Spiral Silicon Drift Detector Hybrid Systems

    SciTech Connect (OSTI)

    Chen W.; De Geronimo G.; Carini, G.A.; Gaskin, J.A.; Keister, J.W.; Li, S.; Li, Z.; Ramsey, B.D.; Siddons, D.P.; Smith, G.C.; Verbitskaya, E.

    2011-11-15

    We have developed a new thin-window, n-type, low-resistivity, spiral silicon drift detector (SDD) array - to be used as an extraterrestrial X-ray spectrometer (in varying environments) for NASA. To achieve low-energy response, a thin SDD entrance window was produced using a previously developed method. These thin-window devices were also produced on lower resistivity, thinner, n-type, silicon material, effectively ensuring their radiation hardness in anticipation of operation in potentially harsh radiation environments (such as found around the Jupiter system). Using the Indiana University Cyclotron Facility beam line RERS1, we irradiated a set of suitable diodes up to 5 Mrad and the latest iteration of our ASICs up to 12 Mrad. Then we irradiated two hybrid detectors consisting of newly, such-produced in-house (BNL) SDD chips bonded with ASICs with doses of 0.25 Mrad and 1 Mrad. Also we irradiated another hybrid detector consisting of previously produced (by KETEK) on n-type, high-resistivity SDD chip bonded with BNL's ASICs with a dose of 1 Mrad. The measurement results of radiated diodes (up to 5 Mrad), ASICs (up to 12 Mrad) and hybrid detectors (up to 1 Mrad) are presented here.

  20. Initial results from the operation of village hybrid systems in Chile

    SciTech Connect (OSTI)

    Holz, R.; Baring-Gould, E.I.; Corbus, D. [and others

    1997-08-01

    The government of Chile has undertaken a rural electrification program to electrify 75% of the population by the year 2000. Renewable energy is considered within this program, and its application facilitated through a technical cooperation agreement between Chile`s national energy commission (CNE) and the U.S. Department of Energy. In order to introduce isolated mini-grid hybrid wind-energy systems into Chile, three pilot projects were implemented in Region IX. The goal of the pilot systems is to establish renewables as a viable option for rural electrification in the Chilean context. In this paper we report on the first six months of three pilot projects. Presented as background information are brief descriptions of the power systems, data acquisition systems, and the operation and maintenance (O&M) protocols. Analyses of loads, component performance, system operation, and balance of payments for O&M are the primary points presented. Important lessons learned and future plans are also discussed.

  1. hStorage-DB: Heterogeneity-aware Data Management to Exploit the Full Capability of Hybrid Storage Systems

    E-Print Network [OSTI]

    Chen, Feng

    .a.chen}@intel.com ABSTRACT As storage systems become increasingly heterogeneous and complex, it adds burdens on DBAs, causing storage system, so that every request will be served with a suitable storage device. With hStorage-DB, we but is particularly impor- tant for a hybrid storage system. To show the effectiveness of hStorage-DB, we have

  2. Adapt-Traf: An adaptive multiagent road traffic management system based on hybrid ant-hierarchical fuzzy model

    E-Print Network [OSTI]

    Casillas Barranquero, Jorge

    of the energy consumption, and others. Road traffic management consists on improving the traffic fluency on roadAdapt-Traf: An adaptive multiagent road traffic management system based on hybrid ant systems Ant colony Hierarchical fuzzy system Traffic simulation a b s t r a c t Usually, road networks

  3. Order to Disorder Transitions in Hybrid Intelligent Systems: a Hatch to the Interactions of Nations -Governments

    E-Print Network [OSTI]

    Owladeghaffari, Hamed

    2008-01-01

    In this study, under general frame of MAny Connected Intelligent Particles Systems (MACIPS), we reproduce two new simple subsets of such intelligent complex network, namely hybrid intelligent systems, involved a few prominent intelligent computing and approximate reasoning methods: self organizing feature map (SOM), Neuro-Fuzzy Inference System and Rough Set Theory (RST). Over this, we show how our algorithms can be construed as a linkage of government-society interaction, where government catches various fashions of behavior: solid (absolute) or flexible. So, transition of such society, by changing of connectivity parameters (noise) from order to disorder is inferred. Add to this, one may find an indirect mapping among finical systems and eventual market fluctuations with MACIPS.

  4. Self-learning control system for plug-in hybrid vehicles

    DOE Patents [OSTI]

    DeVault, Robert C [Knoxville, TN

    2010-12-14

    A system is provided to instruct a plug-in hybrid electric vehicle how optimally to use electric propulsion from a rechargeable energy storage device to reach an electric recharging station, while maintaining as high a state of charge (SOC) as desired along the route prior to arriving at the recharging station at a minimum SOC. The system can include the step of calculating a straight-line distance and/or actual distance between an orientation point and the determined instant present location to determine when to initiate optimally a charge depleting phase. The system can limit extended driving on a deeply discharged rechargeable energy storage device and reduce the number of deep discharge cycles for the rechargeable energy storage device, thereby improving the effective lifetime of the rechargeable energy storage device. This "Just-in-Time strategy can be initiated automatically without operator input to accommodate the unsophisticated operator and without needing a navigation system/GPS input.

  5. Method of converting an existing vehicle powertrain to a hybrid powertrain system

    DOE Patents [OSTI]

    Reed, Jr., Richard G. (Royal Oak, MI); Boberg, Evan S. (Hazel Park, MI); Lawrie, Robert E. (Whitmore Lake, MI); Castaing, Francois J. (Bloomfield Township, MI)

    2001-12-25

    A method of converting an existing vehicle powertrain including a manual transmission to a hybrid powertrain system with an automated powertrain transmission. The first step in the method of attaching a gear train housing to a housing of said manual transmission, said gear train housing receiving as end of drive shaft of said transmission and rotatably supporting a gear train assembly. Secondly, mounting an electric motor/generator to said gear train housing and attaching a motor/generator drive shaft of said electric motor/generator to said gear train assembly. Lastly, connecting an electro-mechanical clutch actuator to a friction clutch mechanism of said manual transmission.

  6. Principles of passive and active cooling of mirror-based hybrid systems employing liquid metals

    SciTech Connect (OSTI)

    Anglart, Henryk [Div. of Nuclear Technology, School of Engineering Sciences, Royal Institute of Technology Roslagstullsbacken 21, 106-91 Stockholm (Sweden)

    2012-06-19

    This paper presents principles of passive and active cooling that are suitable to mirrorbased hybrid, nuclear fission/fusion systems. It is shown that liquid metal lead-bismuth cooling of the mirror machine with 25 m height and 1.5 GW thermal power is feasible both in the active mode during the normal operation and in the passive mode after the reactor shutdown. In the active mode the achievable required pumping power can well be below 50 MW, whereas the passive mode provides enough coolant flow to keep the clad temperature below the damage limits.

  7. Automated UF6 Cylinder Enrichment Assay: Status of the Hybrid Enrichment Verification Array (HEVA) Project: POTAS Phase II

    SciTech Connect (OSTI)

    Jordan, David V.; Orton, Christopher R.; Mace, Emily K.; McDonald, Benjamin S.; Kulisek, Jonathan A.; Smith, Leon E.

    2012-06-01

    Pacific Northwest National Laboratory (PNNL) intends to automate the UF6 cylinder nondestructive assay (NDA) verification currently performed by the International Atomic Energy Agency (IAEA) at enrichment plants. PNNL is proposing the installation of a portal monitor at a key measurement point to positively identify each cylinder, measure its mass and enrichment, store the data along with operator inputs in a secure database, and maintain continuity of knowledge on measured cylinders until inspector arrival. This report summarizes the status of the research and development of an enrichment assay methodology supporting the cylinder verification concept. The enrichment assay approach exploits a hybrid of two passively-detected ionizing-radiation signatures: the traditional enrichment meter signature (186-keV photon peak area) and a non-traditional signature, manifested in the high-energy (3 to 8 MeV) gamma-ray continuum, generated by neutron emission from UF6. PNNL has designed, fabricated, and field-tested several prototype assay sensor packages in an effort to demonstrate proof-of-principle for the hybrid assay approach, quantify the expected assay precision for various categories of cylinder contents, and assess the potential for unsupervised deployment of the technology in a portal-monitor form factor. We refer to recent sensor-package prototypes as the Hybrid Enrichment Verification Array (HEVA). The report provides an overview of the assay signatures and summarizes the results of several HEVA field measurement campaigns on populations of Type 30B UF6 cylinders containing low-enriched uranium (LEU), natural uranium (NU), and depleted uranium (DU). Approaches to performance optimization of the assay technique via radiation transport modeling are briefly described, as are spectroscopic and data-analysis algorithms.

  8. In-service performance and behavior characterization of the hybrid composite bridge system - a case study

    E-Print Network [OSTI]

    John M. Civitillo; Devin K. Harris; Amir Gheitasi; Mark Saliba; Bernard L. Kassner

    2014-09-08

    The Hybrid Composite Beam (HCB) system is an innovative structural technology that has been recently used in bridge construction within the U.S. transportation network. In this system, the superstructure consists of a conventional reinforced concrete deck supported by Hybrid Composite Beams. Each beam is comprised of a glassfiber reinforced polymer (FRP) box shell containing a tied parabolic concrete arch. Inclined stirrups provide shear integrity and enforce composite action between the HCBs and the concrete deck. This paper focuses on evaluating the in-service performance of a newly constructed HCB bridge superstructure located on Route 205 in Colonial Beach, Virginia. A live load test was conducted using tandem axle dump trucks under both quasi-static and dynamic conditions. Results obtained from the experimental investigation were used to determine three key behavior characteristics. Dynamic amplification and lateral load distribution were found to be reasonable in comparison to the assumed design values. The testing program also included internal and external measurement systems to help characterize the load sharing behavior of the HCB on an element level. The main load carrying elements are the deck in compression and the steel ties in tension, and the FRP shell did not act compositely with the internal components.

  9. Large Hybrid Energy Systems for Making Low CO2 Load-Following Power and Synthetic Fuel

    SciTech Connect (OSTI)

    Robert S. Cherry; Richard D. Boardman; Steven Aumeier

    2012-02-01

    Hybrid energy systems using nuclear heat sources can economically produce load-following electrical power by exploiting the surplus generation capacity available at night or seasonally to make synthetic fuel. Vehicle fuel is the only current energy use large enough to absorb all the energy capacity that might be diverted from the power industry, and its ease of storage obviates problems with discontinuous synfuel production. The potential benefits and challenges of synfuels integration are illustrated by the production of methanol from natural gas (as a source of carbon) using steam from a light water nuclear power reactor which is assumed to be available in accord with a year's worth of power demand data. Methanol's synthesis process is easily adapted to using 300 C heat from a light water reactor and this simple compound can be further processed into gasoline, biodiesel, or dimethyl ether, fuels which can be used with the current vehicle fleet. A supplemental feed to the methanol process of natural gas (for energy) allows operation at constant full rate when the nuclear heat is being used to produce electrical power. The higher capital costs of such a system are offset by a lower cost of heat and power production from a large base load type of plant and by reduced costs associated with much lower CO2 emissions. Other less tangible economic benefits of this and similar hybrid systems include better use of natural resource for fuels and greater energy services security from the domestic production of vehicle fuel.

  10. Determining System Parameters for Optimal Performance of Hybrid DS/FFH Spread-Spectrum

    SciTech Connect (OSTI)

    Ma, Xiao [ORNL; Olama, Mohammed M [ORNL; Kuruganti, Phani Teja [ORNL; Smith, Stephen Fulton [ORNL; Djouadi, Seddik M [ORNL

    2012-01-01

    In recent years there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their use in military communications because they accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct sequence (DS) modulation with "fast" frequency hopping (FFH), denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper, an optimization problem is formulated that maximizes the DS/FFH communication system performance in terms of probability of bit error and solves for the system design parameters. The objective function is non-convex and can be solved by applying the Karush-Kuhn-Tucker conditions. System design parameters of interest are the length of the DS code sequence, number of frequency hopping channels, number of channels corrupted by wide-band jamming, and number of hops per bit. The proposed formulation takes into account the effects from wide-band and partial-band jamming, multi-user interference and/or varying degrees of Rayleigh and Rician multipath fading. Numerical results are presented to demonstrate the method s viability.

  11. Mesoscale hybrid calibration artifact

    SciTech Connect (OSTI)

    Tran, Hy D. (Albuquerque, NM); Claudet, Andre A. (Albuquerque, NM); Oliver, Andrew D. (Waltham, MA)

    2010-09-07

    A mesoscale calibration artifact, also called a hybrid artifact, suitable for hybrid dimensional measurement and the method for make the artifact. The hybrid artifact has structural characteristics that make it suitable for dimensional measurement in both vision-based systems and touch-probe-based systems. The hybrid artifact employs the intersection of bulk-micromachined planes to fabricate edges that are sharp to the nanometer level and intersecting planes with crystal-lattice-defined angles.

  12. Advanced Hybrid Propulsion and Energy Management System for High Efficiency, Off Highway, 240 Ton Class, Diesel Electric Haul Trucks

    SciTech Connect (OSTI)

    Richter, Tim; Slezak, Lee; Johnson, Chris; Young, Henry; Funcannon, Dan

    2008-12-31

    The objective of this project is to reduce the fuel consumption of off-highway vehicles, specifically large tonnage mine haul trucks. A hybrid energy storage and management system will be added to a conventional diesel-electric truck that will allow capture of braking energy normally dissipated in grid resistors as heat. The captured energy will be used during acceleration and motoring, reducing the diesel engine load, thus conserving fuel. The project will work towards a system validation of the hybrid system by first selecting an energy storage subsystem and energy management subsystem. Laboratory testing at a subscale level will evaluate these selections and then a full-scale laboratory test will be performed. After the subsystems have been proven at the full-scale lab, equipment will be mounted on a mine haul truck and integrated with the vehicle systems. The integrated hybrid components will be exercised to show functionality, capability, and fuel economy impacts in a mine setting.

  13. Reliability Analysis of Electric Power Systems Using an Object-oriented Hybrid Modeling Approach

    E-Print Network [OSTI]

    Schläpfer, Markus; Kröger, Wolfgang

    2012-01-01

    The ongoing evolution of the electric power systems brings about the need to cope with increasingly complex interactions of technical components and relevant actors. In order to integrate a more comprehensive spectrum of different aspects into a probabilistic reliability assessment and to include time-dependent effects, this paper proposes an object-oriented hybrid approach combining agent-based modeling techniques with classical methods such as Monte Carlo simulation. Objects represent both technical components such as generators and transmission lines and non-technical components such as grid operators. The approach allows the calculation of conventional reliability indices and the estimation of blackout frequencies. Furthermore, the influence of the time needed to remove line overloads on the overall system reliability can be assessed. The applicability of the approach is demonstrated by performing simulations on the IEEE Reliability Test System 1996 and on a model of the Swiss high-voltage grid.

  14. Dynamics of quantum-classical hybrid systems: Effect of matter-wave pressure

    SciTech Connect (OSTI)

    Shen, J. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Huang, X. L. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029 (China); Yi, X. X. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Centre for Quantum Technologies and Department of Physics, National University of Singapore, Singapore 117543 (Singapore); Wu Chunfeng; Oh, C. H. [Centre for Quantum Technologies and Department of Physics, National University of Singapore, Singapore 117543 (Singapore)

    2010-12-15

    Radiation pressure affects the kinetics of a system exposed to radiation and it constitutes the basis of laser cooling. In this article, we study matter-wave pressure through examining the dynamics of a quantum-classical hybrid system. The quantum and classical subsystems are affected mutually via a changing boundary condition. Two systems, that is, an atom and a Bose-Einstein condensate (BEC), are considered as the quantum subsystems, while an oscillating wall is taken as the classical subsystem. We show that the classical subsystem would experience a force proportional to Q{sup -3} from the quantum atom, where Q denotes the distance between the two walls, whereas it acquires an additional force proportional to Q{sup -2} from the BEC due to the atom-atom interaction in the BEC. These forces can be understood as the matter-wave pressure.

  15. Systems and Control Letters (special issue on hybrid systems), vol. 38, pp. 167-177, Nov 1999 1 Logic-based switching control of a nonholonomic

    E-Print Network [OSTI]

    Liberzon, Daniel

    Systems and Control Letters (special issue on hybrid systems), vol. 38, pp. 167-177, Nov 1999 1 Logic-based switching control of a nonholonomic system with parametric modeling uncertainty #3; Jo~ao P is concerned with control of nonholonomic systems in the presence of parametric modeling uncertainty. The speci

  16. Life-cycle analysis results for geothermal systems in comparison to other power systems: Part II.

    SciTech Connect (OSTI)

    Sullivan, J.L.; Clark, C.E.; Yuan, L.; Han, J.; Wang, M.

    2012-02-08

    A study has been conducted on the material demand and life-cycle energy and emissions performance of power-generating technologies in addition to those reported in Part I of this series. The additional technologies included concentrated solar power, integrated gasification combined cycle, and a fossil/renewable (termed hybrid) geothermal technology, more specifically, co-produced gas and electric power plants from geo-pressured gas and electric (GPGE) sites. For the latter, two cases were considered: gas and electricity export and electricity-only export. Also modeled were cement, steel and diesel fuel requirements for drilling geothermal wells as a function of well depth. The impact of the construction activities in the building of plants was also estimated. The results of this study are consistent with previously reported trends found in Part I of this series. Among all the technologies considered, fossil combustion-based power plants have the lowest material demand for their construction and composition. On the other hand, conventional fossil-based power technologies have the highest greenhouse gas (GHG) emissions, followed by the hybrid and then two of the renewable power systems, namely hydrothermal flash power and biomass-based combustion power. GHG emissions from U.S. geothermal flash plants were also discussed, estimates provided, and data needs identified. Of the GPGE scenarios modeled, the all-electric scenario had the highest GHG emissions. Similar trends were found for other combustion emissions.

  17. High voltage bus and auxiliary heater control system for an electric or hybrid vehicle

    DOE Patents [OSTI]

    Murty, Balarama Vempaty (West Bloomfield, MI)

    2000-01-01

    A control system for an electric or hybrid electric vehicle includes a vehicle system controller and a control circuit having an electric immersion heater. The heater is electrically connected to the vehicle's high voltage bus and is thermally coupled to a coolant loop containing a heater core for the vehicle's climate control system. The system controller responds to cabin heat requests from the climate control system by generating a pulse width modulated signal that is used by the control circuit to operate the heater at a duty cycle appropriate for the amount of cabin heating requested. The control system also uses the heater to dissipate excess energy produced by an auxiliary power unit and to provide electric braking when regenerative braking is not desirable and manual braking is not necessary. The control system further utilizes the heater to provide a safe discharge of a bank of energy storage capacitors following disconnection of the battery or one of the high voltage connectors used to transmit high voltage operating power to the various vehicle systems. The control circuit includes a high voltage clamping circuit that monitors the voltage on the bus and operates the heater to clamp down the bus voltage when it exceeds a pre-selected maximum voltage. The control system can also be used to phase in operation of the heater when the bus voltage exceeds a lower threshold voltage and can be used to phase out the auxiliary power unit charging and regenerative braking when the battery becomes fully charged.

  18. Hybrid Control in Air Traffic Management Systems \\Lambda S. Sastry, G. Meyer y , C. Tomlin, J. Lygeros, D. Godbole and G. Pappas

    E-Print Network [OSTI]

    Pappas, George J.

    Hybrid Control in Air Traffic Management Systems \\Lambda S. Sastry, G. Meyer y , C. Tomlin, J Center, we have be­ gun the study of hierarchical, hybrid control systems in the framework of air traffic. Technological advances that make a more advanced air traffic control system a reality include the availability

  19. Hybrid Network Simulation for the ATLAS Trigger and Data Acquisition (TDAQ) System

    E-Print Network [OSTI]

    Bonaventura, Matias Alejandro; The ATLAS collaboration; Castro, Rodrigo Daniel; Foguelman, Daniel Jacob

    2015-01-01

    The poster shows the ongoing research in the ATLAS TDAQ group in collaboration with the University of Buenos Aires in the area of hybrid data network simulations. he Data Network and Processing Cluster filters data in real-time, achieving a rejection factor in the order of 40000x and has real-time latency constrains. The dataflow between the processing units (TPUs) and Readout System (ROS) presents a “TCP Incast”-type network pathology which TCP cannot handle it efficiently. A credits system is in place which limits rate of queries and reduces latency. This large computer network, and the complex dataflow has been modelled and simulated using a PowerDEVS, a DEVS-based simulator. The simulation has been validated and used to produce what-if scenarios in the real network. Network Simulation with Hybrid Flows: Speedups and accuracy, combined • For intensive network traffic, Discrete Event simulation models (packet-level granularity) soon becomes prohibitive: Too high computing demands. • Fluid Flow simul...

  20. Calcium manganate: A promising candidate as buffer layer for hybrid halide perovskite photovoltaic-thermoelectric systems

    SciTech Connect (OSTI)

    Zhao, Pengjun; Wang, Hongguang; Kong, Wenwen; Xu, Jinbao Wang, Lei; Ren, Wei; Bian, Liang; Chang, Aimin

    2014-11-21

    We have systematically studied the feasibility of CaMnO{sub 3} thin film, an n-type perovskite, to be utilized as the buffer layer for hybrid halide perovskite photovoltaic-thermoelectric device. Locations of the conduction band and the valence band, spontaneous polarization performance, and optical properties were investigated. Results indicate the energy band of CaMnO{sub 3} can match up well with that of CH{sub 3}NH{sub 3}PbI{sub 3} on separating electron-hole pairs. In addition, the consistent polarization angle helps enlarge the open circuit voltage of the composite system. Besides, CaMnO{sub 3} film shows large absorption coefficient and low extinction coefficient under visible irradiation, demonstrating high carrier concentration, which is beneficial to the current density. More importantly, benign thermoelectric properties enable CaMnO{sub 3} film to assimilate phonon vibration from CH{sub 3}NH3PbI{sub 3}. All the above features lead to a bright future of CaMnO{sub 3} film, which can be a promising candidate as a buffer layer for hybrid halide perovskite photovoltaic-thermoelectric systems.

  1. Concentrating Solar Power Hybrid System Study: Cooperative Research and Development Final Report, CRADA Number CRD-13-506

    SciTech Connect (OSTI)

    Turchi, C.

    2014-09-01

    The purpose of this PTS is to collaboratively leverage the collective resources at General Electric Global Research (GEGRC) and National Renewable Energy Laboratories (NREL) in the areas of concentrating solar power hybrid systems to advance state-of-the-art concentrating solar and conventional power generation system integration.

  2. 2 15.10.2013 Van D. BaxterVolker Weinmann Hybrid heat pump system as chance for the

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    pumps Condensing gas and oil boilers DHW tanks Solar panels Under floor heating Installation equipment#12;2 15.10.2013 Van D. BaxterVolker Weinmann Hybrid heat pump system as chance for the renovation market Dipl.-Ing. Volker Weinmann ROTEX Heating Systems GmbH #12;3 15.10.2013 Van D. Baxter

  3. Model-Free Learning-Based Online Management of Hybrid Electrical Energy Storage Systems in Electric Vehicles

    E-Print Network [OSTI]

    Pedram, Massoud

    Model-Free Learning-Based Online Management of Hybrid Electrical Energy Storage Systems in Electric@elpl.snu.ac.kr Abstract--To improve the cycle efficiency and peak output power density of energy storage systems in electric vehicles (EVs), supercapacitors have been proposed as auxiliary energy storage elements

  4. Energy Management of DVS-DPM Enabled Embedded Systems Powered by Fuel Cell-Battery Hybrid Source

    E-Print Network [OSTI]

    Kambhampati, Subbarao

    Energy Management of DVS-DPM Enabled Embedded Systems Powered by Fuel Cell-Battery Hybrid Source a policy to maximize the operational lifetime of a DVS-DPM enabled embedded system powered by a fuel cell of the fuel cell (FC), and that the fuel consumption can be minimized by a combination of a load en- ergy

  5. River Protection Project Integrated safety management system phase II verification report, volumes I and II - 8/19/99

    SciTech Connect (OSTI)

    SHOOP, D.S.

    1999-09-10

    The Department of Energy policy (DOE P 450.4) is that safety is integrated into all aspects of the management and operations of its facilities. In simple and straightforward terms, the Department will ''Do work safely.'' The purpose of this River Protection Project (RPP) Integrated Safety Management System (ISMS) Phase II Verification was to determine whether ISMS programs and processes are implemented within RFP to accomplish the goal of ''Do work safely.'' The goal of an implemented ISMS is to have a single integrated system that includes Environment, Safety, and Health (ES&H) requirements in the work planning and execution processes to ensure the protection of the worker, public, environment, and federal property over the RPP life cycle. The ISMS is comprised of the (1) described functions, components, processes, and interfaces (system map or blueprint) and (2) personnel who are executing those assigned roles and responsibilities to manage and control the ISMS. Therefore, this review evaluated both the ''paper'' and ''people'' aspects of the ISMS to ensure that the system is implemented within RPP. Richland Operations Office (RL) conducted an ISMS Phase I Verification of the TWRS from September 28-October 9, 1998. The resulting verification report recommended that TWRS-RL and the contractor proceed with Phase II of ISMS verification given that the concerns identified from the Phase I verification review are incorporated into the Phase II implementation plan.

  6. Application of system safety framework in hybrid socio-technical environment of Eurasia

    E-Print Network [OSTI]

    Abdymomunov, Azamat

    2011-01-01

    The political transformation and transition of post-Soviet societies have led to hybrid structures in political, economic and technological domains. In such hybrid structures the roles of government, state enterprise, ...

  7. Evaluation of 2010 Urea-SCR Technology for Hybrid Vehicles using PSAT System Simulations

    Broader source: Energy.gov [DOE]

    Results of simulations of LDD hybrid vehicle under hybrid drive cycle conditions in PSAT show the potential impact of urea-SCR NOx controls on HEVs and PHEVs powered by lean-burn engines.

  8. Letter box line blackener for the HDTV/conventional-analog hybrid system

    DOE Patents [OSTI]

    Wysocki, Frederick J.; Nickel, George H.

    2006-07-18

    A blackener for letter box lines associated with a HDTV/conventional-analog hybrid television transmission where the blackener counts horizontal sync pulses contained in the HDTV/conventional-analog hybrid television transmission and determines when the HDTV/conventional-analog hybrid television transmission is in letter-box lines: if it is, then the blackener sends substitute black signal to an output; and if it is not, then the blackener sends the HDTV/conventional-analog hybrid television transmission to the output.

  9. Energy Storage Systems Considerations for Grid-Charged Hybrid Electric Vehicles: Preprint

    SciTech Connect (OSTI)

    Markel, T.; Simpson, A.

    2005-09-01

    This paper calculates battery power and energy requirements for grid-charged hybrid electric vehicles (HEVs) with different operating strategies.

  10. Evaluation of 2004 Toyota Prius Hybrid Electic Drive System Interim Report - Revised

    SciTech Connect (OSTI)

    Ayers, C.W.; Hsu, J.S.; Marlino, L.D.; Miller, C.W.; Ott, G.W., Jr.; Oland, C.B.; Burress, T.A.

    2007-07-31

    The 2004 Toyota Prius is a hybrid automobile equipped with a gasoline engine and a battery-powered electric motor. Both of these motive power sources are capable of providing mechanical drive power for the vehicle. The engine can deliver a peak power output of 57 kilowatts (kW) at 5000 revolutions per minute (rpm) while the motor can deliver a peak power output of 50 kW at 1300 rpm. Together, this engine-motor combination has a specified peak power output of 82 kW at a vehicle speed of 85 kilometers per hour (km/h). In operation, the 2004 Prius exhibits superior fuel economy compared to conventionally powered automobiles. Laboratory tests were conducted to evaluate the electrical and mechanical performance of the 2004 Toyota Prius and its hybrid electric drive system. As a hybrid vehicle, the 2004 Prius uses both a gasoline-powered internal combustion engine and a battery-powered electric motor as motive power sources. Innovative algorithms for combining these two power sources results in improved fuel efficiency and reduced emissions compared to traditional automobiles. Initial objectives of the laboratory tests were to measure motor and generator back-electromotive force (emf) voltages and determine gearbox-related power losses over a specified range of shaft speeds and lubricating oil temperatures. Follow-on work will involve additional performance testing of the motor, generator, and inverter. Information contained in this interim report summarizes the test results obtained to date, describes preliminary conclusions and findings, and identifies additional areas for further study.

  11. Optically promoted bipartite atomic entanglement in hybrid metallic carbon nanotube systems

    SciTech Connect (OSTI)

    Gelin, M. F. [Department of Chemistry, Technische Universität München, D-85747 Garching (Germany)] [Department of Chemistry, Technische Universität München, D-85747 Garching (Germany); Bondarev, I. V.; Meliksetyan, A. V. [Department of Physics, North Carolina Central University, Durham, North Carolina 27707 (United States)] [Department of Physics, North Carolina Central University, Durham, North Carolina 27707 (United States)

    2014-02-14

    We study theoretically a pair of spatially separated extrinsic atomic type species (extrinsic atoms, ions, molecules, or semiconductor quantum dots) near a metallic carbon nanotube, that are coupled both directly via the inter-atomic dipole-dipole interactions and indirectly by means of the virtual exchange by resonance plasmon excitations on the nanotube surface. We analyze how the optical preparation of the system by using strong laser pulses affects the formation and evolution of the bipartite atomic entanglement. Despite a large number of possible excitation regimes and evolution pathways, we find a few generic scenarios for the bipartite entanglement evolution and formulate practical recommendations on how to optimize and control the robust bipartite atomic entanglement in hybrid carbon nanotube systems.

  12. Enhancing Earned Value (EV) Analysis Using Project Assessment & Reporting System (PARS II)- Road Show Presentation

    Broader source: Energy.gov [DOE]

    This presentation was provided by the DOE Office of Project Management Oversight and Assessments (formerly DOE Office of Acquisition and Project Management) in January 2013. It is about the Enhancing Earned Value (EV) Analysis Using Project Assessment & Reporting System (PARS II). PARS II is the Department’s official “System of Record” for capital asset project performance information. PARS II uses the same data as maintained in our contractors’ project management systems, so everyone from the Federal Project Director’s staff to the Secretary of Energy will have easy access to the same data.

  13. Status of the NSLS-II Injection System Design

    SciTech Connect (OSTI)

    Shaftan,T.

    2008-06-23

    The NSLS-II is a new ultra-bright 3rd generation 3 GeV light source that will be built at Brookhaven National Laboratory. Its design is well under way. The requirements for the compact injector complex, which will continuously provide 3 GeV electrons for top-off injection into the storage ring, are demanding: high reliability, relatively high charge and low losses. The injector consists of a linear accelerator, a full-energy booster, as well as transport lines, and an injection straight section. In this paper we give an overview of the NSLS-II injector, discuss its status, specifications, and the design challenges.

  14. Hybrid Identities

    E-Print Network [OSTI]

    Montclair, Sani

    2012-01-01

    Hybrid Identity; Family, Photography and History in Colonialintersectional politics of hybrid identity is the primarycreated a distinctively hybrid culture, one where language,

  15. Method and apparatus for effecting light-off of a catalytic converter in a hybrid powertrain system

    DOE Patents [OSTI]

    Roos, Bryan Nathaniel; Spohn, Brian L

    2013-07-02

    A powertrain system includes a hybrid transmission and an internal combustion engine coupled to an exhaust aftertreatment device. A method for operating the powertrain system includes operating the hybrid transmission to generate tractive torque responsive to an operator torque request with the internal combustion engine in an engine-off state so long as the tractive torque is less than a threshold. The internal combustion engine is operated in an engine-on state at preferred operating conditions to effect light-off of the exhaust aftertreatment device and the hybrid transmission is coincidentally operated to generate tractive torque responsive to the operator torque request when the operator torque request exceeds the threshold. The internal combustion engine is then operated in the engine-on state to generate tractive torque responsive to the operator torque request.

  16. Energy performance of air distribution systems part II: room air stratification full scale testing

    E-Print Network [OSTI]

    Webster, Tom; Lukaschek, Wolfgang; Dickeroff, Darryl; Bauman, Fred

    2007-01-01

    the DDR to exceed its rated airflow. Energy Performance ofEnergy Performance of UFAD Systems Part II: Room Air Stratification Full Scale Testing Airflow cfm/sf m³/(sm²) DDR

  17. FRANTIC 5 (a version of FRANTIC II) : a computer code for evaluating system aging effect

    E-Print Network [OSTI]

    Dimitrijevic, Vesna B.

    1986-01-01

    The FRANTIC 5 code is a modification of the FRANTIC II code for time dependent unavailability analysis. FRANTIC 5 is specially adapted for modeling the aging effects on system and component performance. The FRANTIC 5 code ...

  18. Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part II: Parametric Evaluation

    E-Print Network [OSTI]

    Xu, Xianfan

    Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part II: Parametric Evaluation been proposed to model thermoelectric generators (TEGs) for automotive waste heat recovery. Details: Thermoelectric generators, waste heat recovery, automotive exhaust, skutterudites INTRODUCTION In part I

  19. HYBRID LIMIT CYCLES AND HYBRID POINCARE-BENDIXSON

    E-Print Network [OSTI]

    Johansson, Karl Henrik

    HYBRID LIMIT CYCLES AND HYBRID POINCAR´E-BENDIXSON Slobodan N. Simi´c Department of Electrical regular hybrid systems with no branching (Simi´c et al., 2000a). The first one provides a condition for asymptotic stability of hybrid closed orbits in terms of contraction-expansion rates of resets and flows

  20. Hybrid Micro-Electro-Mechanical Systems for Highly Reliable and Selective Characterization of Tank Waste

    SciTech Connect (OSTI)

    Datskos, Panos G.; Sepaniak, Michael J.

    2004-06-01

    Our multifaceted research program is aimed at the fundamental and practical development of hybrid micro-electro-mechanical-systems (MEMS) that integrates several elements of chemical selectivity and sensor function. We are developing MEMS sensors that combine chemimechanical transduction, and surface enhanced Raman spectroscopy (SERS) and radiation detection. One of our goals is to develop highly effective methods of immobilizing a wide variety of molecular and ionic recognition phases onto micromechanical surfaces. We have introduced fundamentally new modes of adsorbate-induced surface stress through nano-structuring of microcantilever surfaces; the responsivity for has increased by over two-orders of magnitude over previously existing technological approaches. Noble metal nanostructures similar to those that enhance chemi-mechanical transduction exhibit substantial Raman enhancement factors.

  1. Training Hybrid Neuro-Fuzzy System to Infer Permeability in Wells on Maracaibo Lake, Venezuela

    E-Print Network [OSTI]

    Hurtado, Nuri; Torres, Julio

    2014-01-01

    The high accuracy on inferrring of rocks properties, such as permeability ($k$), is a very useful study in the analysis of wells. This has led to development and use of empirical equations like Tixier, Timur, among others. In order to improve the inference of permeability we used a hybrid Neuro-Fuzzy System (NFS). The NFS allowed us to infer permeability of well, from data of porosity ($\\phi$) and water saturation ($Sw$). The work was performed with data from wells VCL-1021 (P21) and VCL-950 (P50), Block III, Maracaibo Lake, Venezuela. We evaluated the NFS equations ($k_{P50,i}(\\phi_i,Sw_i)$) with neighboring well data ($P21$), in order to verify the validity of the equations in the area. We have used ANFIS in MatLab.

  2. A Hybrid Redox-Supercapacitor System with Anionic Catholyte and Cationic Anolyte

    SciTech Connect (OSTI)

    Wang, B; Macia-Agullo, JA; Prendiville, DG; Zheng, X; Liu, D; Zhang, Y; Boettcher, SW; Ji, X; Stucky, GD

    2014-04-11

    A significant challenge for energy storage technologies is to realize battery-level energy density and capacitor-level durability and power density in one device. By introducing an electrolyte composed of an anionic catholyte and a cationic anolyte into a symmetric carbon-based supercapacitor configuration, a hybrid electrochemical battery-supercapacitor system using soluble redox species delivers significantly improved energy density from 20 to 42 W.h/kg (based on the electrode mass) and stable capacities for > 10(4) cycles. The ionic species formed in the electrolyte are studied by UV-Vis, Raman and mass spectroscopy to probe the energy storage mechanism. The strategy is general and may provide a route to critically-needed fast-charging devices with both high energy density and power. (C) 2014 The Electrochemical Society. All rights reserved.

  3. 1176 IEEE Transactions on Consumer Electronics , Vol. 58, No. 4, November 2012 Two Hybrid Positioning System Design

    E-Print Network [OSTI]

    Kavehrad, Mohsen

    Positioning System Design Techniques with Lighting LEDs and Ad-hoc Wireless Network Yong Up Lee, IEEE Senior in various fields, in order to contrive a new service from a hybrid of LED lighting and wireless technology lighting LEDs and indoor wireless networking has recently started [7-8]. Positioning is mostly used

  4. Optimal Design of a PV/Fuel Cell Hybrid Power System for the City of Brest in France

    E-Print Network [OSTI]

    Brest, Université de

    . Keywords--Hybrid power system, renewable energy, fuel cell, photovoltaic, generation unit sizing, energy% every year: This yield to urge the use of renewable energies. To today the use of renewable sources in energy production is still small compared to non-renewable energy sources such as fuel fossil and nuclear

  5. Hybrid solid state laser system using a neodymium-based master oscillator and an ytterbium-based power amplifier

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA); Marshall, Christopher D. (Livermore, CA); Powell, Howard T. (Livermore, CA); Krupke, William F. (Pleasanton, CA)

    2001-01-01

    In a master oscillator-power amplifier (MOPA) hybrid laser system, the master oscillator (MO) utilizes a Nd.sup.3+ -doped gain medium and the power amplifier (PA) utilizes a diode-pumped Yb.sup.3+ -doped material. The use of two different laser gain media in the hybrid MOPA system provides advantages that are otherwise not available. The Nd-doped gain medium preferably serves as the MO because such gain media offer the lowest threshold of operation and have already been engineered as practical systems. The Yb-doped gain medium preferably serves in the diode-pumped PA to store pump energy effectively and efficiently by virtue of the long emission lifetime, thereby reducing diode pump costs. One crucial constraint on the MO and PA gain media is that the Nd and Yb lasers must operate at nearly the same wavelength. The 1.047 .mu.m Nd:YLF/Yb:S-FAP [Nd:LiYF.sub.4 /Yb:Sr.sub.5 (PO.sub.4).sub.3 F] hybrid MOPA system is a preferred embodiment of the hybrid Nd/Yb MOPA.

  6. Extending the Lifetime of Fuel Cell Based Hybrid Systems* Jianli Zhuo1, Chaitali Chakrabartil, Naehyuck Chang2, Sarma Vrudhula3

    E-Print Network [OSTI]

    Kambhampati, Subbarao

    34.1 Extending the Lifetime of Fuel Cell Based Hybrid Systems* Jianli Zhuo1, Chaitali Chakrabartil@asu.edu ABSTRACT for portable applications. Fuel cells have very high energy densities Fuel cells are clean power densities and lifetimes compared to batteries. However, fuel cells

  7. Wales, Alaska High Penetration Wind-Diesel Hybrid Power System: Theory of Operation

    SciTech Connect (OSTI)

    Drouilhet, S.; Shirazi, M.

    2002-05-01

    To reduce the cost of rural power generation and the environmental impact of diesel fuel usage, the Alaska Energy Authority (AEA), Kotzebue Electric Association (KEA, a rural Alaskan utility), and the National Renewable Energy Laboratory (NREL), began a collaboration in late 1995 to implement a high-penetration wind-diesel hybrid power system in a village in northwest Alaska. The project was intended to be both a technology demonstration and a pilot for commercial replication of the system in other Alaskan villages. During the first several years of the project, NREL focused on the design and development of the electronic controls, the system control software, and the ancillary components (power converters, energy storage, electric dump loads, communications links, etc.) that would be required to integrate new wind turbines with the existing diesels in a reliable highly automated system. Meanwhile, AEA and KEA focused on project development activities, including wind resource assessment, site selection and permitting, community relationship building, and logistical planning. Ultimately, the village of Wales, Alaska, was chosen as the project site. Wales is a native Inupiat village of approximately 160 inhabitants, with an average electric load of about 75 kW.

  8. Thomson scattering diagnostic system design for the Compact Toroidal Hybrid experiment

    SciTech Connect (OSTI)

    Traverso, P. J., E-mail: pjt0002@auburn.edu; Maurer, D. A.; Ennis, D. A.; Hartwell, G. J.; Goforth, M. M.; Loch, S. D.; Pearce, A. J.; Cianciosa, M. R. [Physics Department, Auburn University, Auburn, Alabama 36849 (United States)

    2014-11-15

    A new Thomson scattering system using standard commercially available components has been designed for the non-axisymmetric plasmas of the Compact Toroidal Hybrid (CTH). The beam, generated by a frequency doubled Continuum PL DLS 2 J Nd:YAG laser, is passed vertically through an entrance Brewster window and an aperturing baffle system to minimize the stray laser light that could enter the collection optics. The beam line has been designed with an 8 m propagation distance to the mid-plane of the CTH device with the beam diameter kept less than 3 mm inside the plasma volume. The beam exits the vacuum system through another Brewster window and enters a beam dump, again to minimize the stray light in the vacuum chamber. Light collection, spectral processing, and signal detection are accomplished with an f/#? 1 aspheric lens, a commercially available Holospec f/1.8 spectrometer, and an Andor iStar DH740-18U-C3 image intensified camera. Spectral rejection of stray laser light, if needed, can be performed with the use of an optional interference filter at the spectrometer input. The system has been developed for initial single point measurements of plasmas with core electron temperatures of approximately 20–300 eV and densities of 5 × 10{sup 18} to 5 × 10{sup 19}?m{sup ?3} dependent upon operational scenario.

  9. DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING

    E-Print Network [OSTI]

    Authors, Various

    2012-01-01

    passive and hybrid space heating systems. Space Cooling Aand hybrid solar heating and cooling systems. Experimentspassive, and hybrid systems for heating, cooling, and

  10. An arc control and protection system for the JET lower hybrid antenna based on an imaging system

    SciTech Connect (OSTI)

    Figueiredo, J.

    2014-11-15

    Arcs are the potentially most dangerous events related to Lower Hybrid (LH) antenna operation. If left uncontrolled they can produce damage and cause plasma disruption by impurity influx. To address this issue an arc real time control and protection imaging system for the Joint European Torus (JET) LH antenna has been implemented. The LH system is one of the additional heating systems at JET. It comprises 24 microwave generators (klystrons, operating at 3.7 GHz) providing up to 5 MW of heating and current drive to the JET plasma. This is done through an antenna composed of an array of waveguides facing the plasma. The protection system presented here is based primarily on an imaging arc detection and real time control system. It has adapted the ITER like wall hotspot protection system using an identical CCD camera and real time image processing unit. A filter has been installed to avoid saturation and spurious system triggers caused by ionization light. The antenna is divided in 24 Regions Of Interest (ROIs) each one corresponding to one klystron. If an arc precursor is detected in a ROI, power is reduced locally with subsequent potential damage and plasma disruption avoided. The power is subsequently reinstated if, during a defined interval of time, arcing is confirmed not to be present by image analysis. This system was successfully commissioned during the restart phase and beginning of the 2013 scientific campaign. Since its installation and commissioning, arcs and related phenomena have been prevented. In this contribution we briefly describe the camera, image processing, and real time control systems. Most importantly, we demonstrate that an LH antenna arc protection system based on CCD camera imaging systems works. Examples of both controlled and uncontrolled LH arc events and their consequences are shown.

  11. Thermoelectric Power Generation System with Loop Thermosyphon in Future High Efficiency Hybrid Vehicles

    Broader source: Energy.gov [DOE]

    This project discusses preliminary experimental results to find how thermoelectrics can be applied ot future hybrid vehicles and the optimum design of such equipment using heat pipes

  12. A Novel Integrated Magnetic Structure Based DC/DC Converter for Hybrid Battery/Ultracapacitor Energy Storage Systems

    SciTech Connect (OSTI)

    Onar, Omer C [ORNL

    2012-01-01

    This manuscript focuses on a novel actively controlled hybrid magnetic battery/ultracapacitor based energy storage system (ESS) for vehicular propulsion systems. A stand-alone battery system might not be sufficient to satisfy peak power demand and transient load variations in hybrid and plug-in hybrid electric vehicles (HEV, PHEV). Active battery/ultracapacitor hybrid ESS provides a better solution in terms of efficient power management and control flexibility. Moreover, the voltage of the battery pack can be selected to be different than that of the ultracapacitor, which will result in flexibility of design as well as cost and size reduction of the battery pack. In addition, the ultracapacitor bank can supply or recapture a large burst of power and it can be used with high C-rates. Hence, the battery is not subjected to supply peak and sharp power variations, and the stress on the battery will be reduced and the battery lifetime would be increased. Utilizing ultracapacitor results in effective capturing of the braking energy, especially in sudden braking conditions.

  13. Ammonia Production and Utilization in a Hybrid LNT+SCR System

    SciTech Connect (OSTI)

    Prikhodko, Vitaly Y [ORNL] [ORNL; Parks, II, James E [ORNL

    2009-01-01

    A hybrid LNT+SCR system is used to control NOx from a light-duty diesel engine with in-cylinder regeneration controls. A diesel oxidation catalyst and diesel particulate filter are upstream of the LNT and SCR catalysts. Ultraviolet (UV) adsorption spectroscopy performed directly in the exhaust path downstream of the LNT and SCR catalysts is used to characterize NH3 production and utilization in the system. Extractive exhaust samples are analyzed with FTIR and magnetic sector mass spectrometry (H2) as well. Furthermore, standard gas analyzers are used to complete the characterization of exhaust chemistry. NH3 formation increases strongly with extended regeneration (or over regeneration ) of the LNT, but the amount of NOx reduction occurring over the SCR catalyst is limited by the amount of NH3 produced as well as the amount of NOx available downstream of the LNT. Control of lean-rich cycling parameters enables control of the ratio of NOx reduction between the LNT and SCR catalysts. During lean-rich cycling, fuel penalties are similar for either LNT dominant or LNT with supplemental SCR NOx reduction. However, stored NH3 after multiple lean-rich cycles can enable continued NOx reduction by the SCR after lean-rich cycling stops; thus, requirements for active regeneration of the LNT+SCR system can be modified during transient operation.

  14. An Optical Reflector System for the CANGAROO-II Telescope

    E-Print Network [OSTI]

    Akiko Kawachi

    1999-11-30

    We have developed light and durable mirrors made of CFRP (Carbon Fiber Reinforced Plastics) laminates for the reflector of the new CANGAROO-II 7 m telescope. The reflector has a parabolic shape (F/1.1) with a 30 m^2 effective area which consists of 60 small spherical mirrors. The attitude of each mirror can be remotely adjusted by stepping motors. After the first adjustment work, the re ector offers a point image of about 0.14 degree (FWHM) on the optic axis. The telescope has been in operation since May 1999 with an energy threshold of ~ 300 GeV.

  15. An Optical Reflector System for the CANGAROO-II Telescope

    E-Print Network [OSTI]

    Kawachi, A

    1999-01-01

    We have developed light and durable mirrors made of CFRP (Carbon Fiber Reinforced Plastics) laminates for the reflector of the new CANGAROO-II 7 m telescope. The reflector has a parabolic shape (F/1.1) with a 30 m^2 effective area which consists of 60 small spherical mirrors. The attitude of each mirror can be remotely adjusted by stepping motors. After the first adjustment work, the re ector offers a point image of about 0.14 degree (FWHM) on the optic axis. The telescope has been in operation since May 1999 with an energy threshold of ~ 300 GeV.

  16. Oak Creek Energy Systems Wind Farm II | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceII Jump to:Information 3rd|Northfork ElectricName0 Jump to:Oahu, Hawaii:I

  17. MODEL AND ALGORITHM EVALUATION FOR THE HYBRID UF6 CONTAINER INSPECTION SYSTEM

    SciTech Connect (OSTI)

    McDonald, Benjamin S.; Jordan, David V.; Orton, Christopher R.; Mace, Emily K.; Smith, Leon E.; Wittman, Richard S.

    2011-06-14

    ABSTRACT Pacific Northwest National Laboratory (PNNL) is developing an automated UF6 cylinder verification station concept based on the combined collection of traditional enrichment-meter (186 keV photons from U-235) data and non-traditional, neutron-induced, high-energy gamma-signatures (3-8.5 MeV) with an array of collimated, medium-resolution scintillators. Previous (2010) work at PNNL demonstrated proof-of-principle that this hybrid method yields accurate, full-volume assay of the cylinder enrichment, reduces systematic errors when compared to several other enrichment assay methods, and provides simplified instrumentation and algorithms suitable for long-term unattended operations. We used Monte Carlo modeling with MCNP5 to support system design (e.g., number and configuration of detector arrays, and design of iron/poly collimators for enhanced (n,?) conversion) and enrichment algorithm development. We developed a first-generation modeling framework in 2010. These tools have since been expanded, refined and benchmarked against field measurements with a prototype system of a 30B cylinder population (0.2 to 4.95 weight % U-235). The MCNP5 model decomposes the radiation transport problem into a linear superposition of “basis spectra” representing contributions from the different uranium isotopes and gamma-ray generation mechanisms (e.g. neutron capture). This scheme accommodates fast generation of “virtual assay signatures” for arbitrary enrichment, material age, and fill variations. Ongoing (FY-2011) refinements to the physics model include accounting for generation of bremsstrahlung photons, arising primarily from the beta decay of Pa-234m, a U-238 daughter. We are using the refined model to optimize collimator design for the hybrid method. The traditional assay method benefits from a high degree of collimation (to isolate each detector’s field-of-view) and relatively small detector area, while the non-traditional method benefits from a wide field-of-view, i.e. less collimation and larger detectors. We implement the enrichment-meter method by applying a square-wave digital filter to a raw spectrum and extracting the 186-keV peak area directly from the convolute spectrum. Ongoing enhancements to this approach include mitigating a systematic peak-area measurement deficit arising from curvature in the spectrum continuum shape. An optimized system prototype based on model results is utilized in a new set of 2011 field measurements, and model and measurement enrichment assay uncertainties are compared.

  18. Text-Alternative Version of Building America Webinar: High Performance HVAC Systems, Part II: Low-Load HVAC Systems for Single and Multifamily Applications

    Broader source: Energy.gov [DOE]

    Transcript for the Nov. 16 webinar, High Performance HVAC Systems, Part II: Low-Load HVAC Systems for Single and Multifamily Applications.

  19. The optical reflector system for the CANGAROO-II imaging atmospheric Cherenkov telescope

    E-Print Network [OSTI]

    A. Kawachi; Y. Hayami; J. Jimbo; S. Kamei; T. Kifune; H. Kubo; J. Kushida; S. LeBohec; K. Miyawaki; M. Mori; K. Nishijima; J. R. Patterson; R. Suzuki; T. Tanimori; S. Yanagita; T. Yoshikoshi; A. Yuki

    2000-07-14

    A new imaging atmospheric Cherenkov telescope (CANGAROO-II) with a light-weight reflector has been constructed. Light, robust, and durable mirror facets of containing CFRP (Carbon Fiber Reinforced Plastic) laminates were developed for the telescope. The attitude of each facet can be adjusted by stepping motors. In this paper, we describe the design, manufacturing, alignment procedure, and the performance of the CANGAROO-II optical reflector system.

  20. The optical reflector system for the CANGAROO-II imaging atmospheric Cherenkov telescope

    E-Print Network [OSTI]

    Kawachi, A; Jimbo, J; Kamei, S; Kifune, T; Kubo, H; Kushida, J; Le Bohec, S; Miyawaki, K; Mori, M; Nishijima, K; Patterson, J R; Suzuki, R; Tanimori, T; Yanagita, S; Yoshikoshi, T; Yuki, A

    2001-01-01

    A new imaging atmospheric Cherenkov telescope (CANGAROO-II) with a light-weight reflector has been constructed. Light, robust, and durable mirror facets of containing CFRP (Carbon Fiber Reinforced Plastic) laminates were developed for the telescope. The attitude of each facet can be adjusted by stepping motors. In this paper, we describe the design, manufacturing, alignment procedure, and the performance of the CANGAROO-II optical reflector system.

  1. 15.872 System Dynamics II, Fall 2010

    E-Print Network [OSTI]

    Sterman, John

    15.872 is a continuation of 15.871 Introduction to System Dynamics. It emphasizes tools and methods needed to apply systems thinking and simulation modeling successfully in complex real-world settings. The course uses ...

  2. Hybrid Quantum Cloning Machine

    E-Print Network [OSTI]

    Satyabrata Adhikari; A. K. Pati; Indranil Chakrabarty; B. S. Choudhury

    2007-06-14

    In this work, we introduce a special kind of quantum cloning machine called Hybrid quantum cloning machine. The introduced Hybrid quantum cloning machine or transformation is nothing but a combination of pre-existing quantum cloning transformations. In this sense it creates its own identity in the field of quantum cloners. Hybrid quantum cloning machine can be of two types: (i) State dependent and (ii) State independent or Universal. We study here the above two types of Hybrid quantum cloning machines. Later we will show that the state dependent hybrid quantum-cloning machine can be applied on only four input states. We will also find in this paper another asymmetric universal quantum cloning machine constructed from the combination of optimal universal B-H quantum cloning machine and universal anti-cloning machine. The fidelities of the two outputs are different and their values lie in the neighborhood of ${5/6} $

  3. Controllability of optical bistability, cooling and entanglement in hybrid cavity optomechanical systems by nonlinear atom-atom interaction

    E-Print Network [OSTI]

    A. Dalafi; M. H. Naderi; M. Soltanolkotabi

    2013-04-17

    We investigate the effects of atomic collisions as well as optomechanical mirror-field coupling on the optical bistability in a hybrid system consisting of a Bose-Einstein condensate inside a driven optical cavity with a moving end mirror. It is shown that the bistability of the system can be controlled by the s-wave scattering frequency which can provide the possibility of realizing a controllable optical switch. On the other hand, by studying the effect of the Bogoliubov mode, as a secondary mechanical mode relative to the mirror vibrations, on the cooling process as well as the bipartite mirror-field and atom-field entanglements we find an interpretation for the cooling of the Bogoliubov mode. The advantage of this hybrid system in comparison to the bare optomecanical cavity with a two-mode moving mirror is the controllability of the frequency of the secondary mode through the s-wave scattering interaction.

  4. Definition of the Semisubmersible Floating System for Phase II of OC4

    SciTech Connect (OSTI)

    Robertson, A.; Jonkman, J.; Masciola, M.; Song, H.; Goupee, A.; Coulling, A.; Luan, C.

    2014-09-01

    Phase II of the Offshore Code Comparison Collaboration Continuation (OC4) project involved modeling of a semisubmersible floating offshore wind system as shown below. This report documents the specifications of the floating system, which were needed by the OC4 participants for building aero-hydro-servo-elastic models.

  5. Hybrid photovoltaic/thermal (PV/T) solar systems simulation with Simulink/Matlab

    SciTech Connect (OSTI)

    da Silva, R.M.; Fernandes, J.L.M.

    2010-12-15

    The purpose of this work consists in thermodynamic modeling of hybrid photovoltaic-thermal (PV/T) solar systems, pursuing a modular strategy approach provided by Simulink/Matlab. PV/T solar systems are a recently emerging solar technology that allows for the simultaneous conversion of solar energy into both electricity and heat. This type of technology present some interesting advantages over the conventional ''side-by-side'' thermal and PV solar systems, such as higher combined electrical/thermal energy outputs per unit area, and a more uniform and aesthetical pleasant roof area. Despite the fact that early research on PV/T systems can be traced back to the seventies, only recently it has gained a renewed impetus. In this work, parametric studies and annual transient simulations of PV/T systems are undertaken in Simulink/Matlab. The obtained results show an average annual solar fraction of 67%, and a global overall efficiency of 24% (i.e. 15% thermal and 9% electrical), for a typical four-person single-family residence in Lisbon, with p-Si cells, and a collector area of 6 m{sup 2}. A sensitivity analysis performed on the PV/T collector suggests that the most important variable that should be addressed to improve thermal performance is the photovoltaic (PV) module emittance. Based on those results, some additional improvements are proposed, such as the use of vacuum, or a noble gas at low-pressure, to allow for the removal of PV cells encapsulation without air oxidation and degradation, and thus reducing the PV module emittance. Preliminary results show that this option allows for an 8% increase on optical thermal efficiency, and a substantial reduction of thermal losses, suggesting the possibility of working at higher fluid temperatures. The higher working temperatures negative effect in electrical efficiency was negligible, due to compensation by improved optical properties. The simulation results are compared with experimental data obtained from other authors and perform reasonably well. The Simulink modeling platform has been mainly used worldwide on simulation of control systems, digital signal processing and electric circuits, but there are very few examples of application to solar energy systems modeling. This work uses the modular environment of Simulink/Matlab to model individual PV/T system components, and to assemble the entire installation layout. The results show that the modular approach strategy provided by Matlab/Simulink environment is applicable to solar systems modeling, providing good code scalability, faster developing time, and simpler integration with external computational tools, when compared with traditional imperative-oriented programming languages. (author)

  6. Building America Webinar: High Performance Space Conditioning Systems, Part II

    Broader source: Energy.gov [DOE]

    The webinar on Nov. 18, 2014, continued the series on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits.

  7. Hybrid Publicly Verifiable Computation James Alderman

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Hybrid Publicly Verifiable Computation James Alderman , Christian Janson, Carlos Cid , and Jason introduce Hybrid PVC (HPVC) which, with a single setup stage, provides a flexible solution to outsourced for such systems. Keywords-- Hybrid Publicly Verifiable Computation, Verifiable Delegable Computation, Dual

  8. Defining manganese(II) removal processes in passive coal mine drainage treatment systems through laboratory incubation experiments

    E-Print Network [OSTI]

    Burgos, William

    Defining manganese(II) removal processes in passive coal mine drainage treatment systems through Building, University Park, PA 16802, USA b Smithsonian Institution, PO Box 37012, MRC 119, Washington, DC for the passive removal of Mn(II) from coal mine drainage (CMD). Aqueous Mn(II) is removed via oxidative

  9. Solar Central Receiver Hybrid Power Systems sodium-cooled receiver concept. Final report. Volume I. Executive summary

    SciTech Connect (OSTI)

    None

    1980-01-01

    The overall, long-term objective of the Solar Central Receiver Hybrid Power System program is to identify, characterize, and ultimately demonstrate the viability and cost effectiveness of solar/fossil, steam Rankine cycle, hybrid power systems that: (1) consist of a combined solar central receiver energy source and a nonsolar energy source at a single, common site, (2) may operate in the base, intermediate, and peaking capacity modes, (3) produce the rated output independent of variations in solar insolation, (4) provide a significant savings (50% or more) in fuel consumption, and (5) produce power at the minimum possible cost in mills/kWh. It is essential that these hybrid concepts be technically feasible and economically competitive with other systems in the near to mid-term time period (1985-1990) on a commercial scale. The program objective for Phase I is to identify and conceptually characterize solar/fossil steam Rankine cycle, commercial-scale, power plant systems that are economically viable and technically feasible. A summary of results of Phase I is given in this volume. (WHK)

  10. A real-time display system for the EAI 8900 Hybrid Computer System 

    E-Print Network [OSTI]

    Phillips, Paul Jenkins

    1967-01-01

    GENERATION. 37 On-Line Display Generation Capabilities . On-Line Display Generation Procedure. . . On-Line Grid Definition and Modification. On-Line Trace Definition and Modification On-Line Active List Modification. . . . . . On-Line Control of Trace... Computer System The Display Console A Schematic Diagram of the Digital-to-Television Conversion System A Free-Form Grid. 22 A Rectangular Co-Ordinate Grid with Linear Scales. . 23 A Rectangular Co-Ordinate Grid with Semi- Logarithmic Scales 24...

  11. An advanced hybrid reprocessing system based on UF{sub 6} volatilization and chromatographic separation

    SciTech Connect (OSTI)

    Wei, Yuezhou; Liu, Ruiqin; Wu, Yan; Zu, Jianhua; Zhao, Long; Mimura, Hitoshi; Shi, Weiqun; Chai, Zhifang; Yang, Jinling; Ding, Youqian

    2013-07-01

    To recover U, Pu, MA (Np, Am, Cm) and some specific fission products FPs (Cs, Sr, Tc, etc.) from various spent nuclear fuels (LWR/FBR: Oxide, Metal Fuels), we are studying an advanced hybrid reprocessing system based on UF6 volatilization (Pyro) and chromatographic separation (Aqueous). Spent fuels are de-cladded by means of thermal and mechanical methods and then applied to the fluorination/volatilization process, which selectively recovers the most amount of U. Then, the remained fuel components are converted to oxides and dissolved by HNO{sub 3} solution. Compared to U, since Pu, MA and FPs are significantly less abundant in spent fuels, the scale of the aqueous separation process could become reasonably small and result in less waste. For the chromatographic separation processes, we have prepared different types of porous silica-based organic/inorganic adsorbents with fast diffusion kinetics, improved chemical stability and low pressure drop in a packed column. So they are advantageously applicable to efficient separation of the actinides and FP elements from the fuel dissolved solution. In this work, adsorption and separation behavior of representative actinides and FP elements was studied. Small scale separation tests using simulated and genuine fuel dissolved solutions were carried out to verify the feasibility of the proposed process. (authors)

  12. Automatic Mesh Adaptivity for Hybrid Monte Carlo/Deterministic Neutronics Modeling of Fusion Energy Systems

    SciTech Connect (OSTI)

    Ibrahim, Ahmad M; Wilson, P.; Sawan, M.; Mosher, Scott W; Peplow, Douglas E.; Grove, Robert E

    2013-01-01

    Three mesh adaptivity algorithms were developed to facilitate and expedite the use of the CADIS and FW-CADIS hybrid Monte Carlo/deterministic techniques in accurate full-scale neutronics simulations of fusion energy systems with immense sizes and complicated geometries. First, a macromaterial approach enhances the fidelity of the deterministic models without changing the mesh. Second, a deterministic mesh refinement algorithm generates meshes that capture as much geometric detail as possible without exceeding a specified maximum number of mesh elements. Finally, a weight window coarsening algorithm decouples the weight window mesh and energy bins from the mesh and energy group structure of the deterministic calculations in order to remove the memory constraint of the weight window map from the deterministic mesh resolution. The three algorithms were used to enhance an FW-CADIS calculation of the prompt dose rate throughout the ITER experimental facility and resulted in a 23.3% increase in the number of mesh tally elements in which the dose rates were calculated in a 10-day Monte Carlo calculation. Additionally, because of the significant increase in the efficiency of FW-CADIS simulations, the three algorithms enabled this difficult calculation to be accurately solved on a regular computer cluster, eliminating the need for a world-class super computer.

  13. Building America Webinar: High Performance Space Conditioning Systems, Part II

    Broader source: Energy.gov [DOE]

    The webinar will continue our series on strategies to improve the performance of HVAC systems for low load homes and home performance retrofits. Presenters and specific topics for this webinar...

  14. Hybrid Parallelism for Volume Rendering on Large, Multi- and Many-core Systems

    SciTech Connect (OSTI)

    Howison, Mark; Bethel, E. Wes; Childs, Hank

    2011-01-01

    With the computing industry trending towards multi- and many-core processors, we study how a standard visualization algorithm, ray-casting volume rendering, can benefit from a hybrid parallelism approach. Hybrid parallelism provides the best of both worlds: using distributed-memory parallelism across a large numbers of nodes increases available FLOPs and memory, while exploiting shared-memory parallelism among the cores within each node ensures that each node performs its portion of the larger calculation as efficiently as possible. We demonstrate results from weak and strong scaling studies, at levels of concurrency ranging up to 216,000, and with datasets as large as 12.2 trillion cells. The greatest benefit from hybrid parallelism lies in the communication portion of the algorithm, the dominant cost at higher levels of concurrency. We show that reducing the number of participants with a hybrid approach significantly improves performance.

  15. Mate Choice and Multiple Paternity in the Xiphophorus Malinche/X. Birchmanni Hybrid System 

    E-Print Network [OSTI]

    Squire, Mattie Katherine

    2015-07-31

    Hybridization represents a collision of genomes that can introduce new genetic and phenotypic variation into a population. Depending on the environment, this may lead to increased individual fitness and allow for integration of novel gene...

  16. Nuclear Hybrid Energy System: Molten Salt Energy Storage (Summer Report 2013)

    SciTech Connect (OSTI)

    Piyush Sabharwall; Michael George mckellar; Su-Jong Yoon

    2013-11-01

    Effective energy use is a main focus and concern in the world today because of the growing demand for energy. The nuclear hybrid energy system (NHES) is a valuable technical concept that can potentially diversify and leverage existing energy technologies. This report considers a particular NHES design that combines multiple energy systems including a nuclear reactor, energy storage system (ESS), variable renewable generator (VRG), and additional process heat applications. Energy storage is an essential component of this particular NHES because its design allows the system to produce peak power while the nuclear reactor operates at constant power output. Many energy storage options are available, but this study mainly focuses on a molten salt ESS. The primary purpose of the molten salt ESS is to enable the nuclear reactor to be a purely constant heat source by acting as a heat storage component for the reactor during times of low demand, and providing additional capacity for thermo-electric power generation during times of peak electricity demand. This report will describe the rationale behind using a molten salt ESS and identify an efficient molten salt ESS configuration that may be used in load following power applications. Several criteria are considered for effective energy storage and are used to identify the most effective ESS within the NHES. Different types of energy storage are briefly described with their advantages and disadvantages. The general analysis to determine the most efficient molten salt ESS involves two parts: thermodynamic, in which energetic and exergetic efficiencies are considered; and economic. Within the molten salt ESS, the two-part analysis covers three major system elements: molten salt ESS designs (two tank direct and thermocline), the molten salt choice, and the different power cycles coupled with the molten salt ESS. Analysis models are formulated and analyzed to determine the most effective ESS. The results show that the most efficient idealized energy storage system is the two tank direct molten salt ESS with an Air Brayton combined cycle using LiF-NaF-KF as the molten salt, and the most economical is the same design with KCl MgCl2 as the molten salt. With energy production being a major worldwide industry, understanding the most efficient molten salt ESS boosts development of an effective NHES with cheap, clean, and steady power.

  17. Hybrid Abstractions that Preserve Timed Languages

    E-Print Network [OSTI]

    Pappas, George J.

    Hybrid Abstractions that Preserve Timed Languages Paulo Tabuada1 and George J. Pappas2 1 Instituto@ee.upenn.edu Abstract. In this paper we consider the problem of extracting an ab- straction from a hybrid control system that determine when trajectories of the original hybrid system can be generated by the abstracted hybrid system

  18. Derived from the necessity to increase testing capabilities of hybrid rocket motor (HRM) propulsion systems for Daedalus Astronautics at Arizona State University, a small-scale motor

    E-Print Network [OSTI]

    Derived from the necessity to increase testing capabilities of hybrid rocket motor (HRM) propulsion. This system provides the platform for characterizing the effects of varying said swirl angle on HRM

  19. Application of Product Design Concepts and Hybrid System Dynamics to Demonstrate Zeno Behavior and Zeno Periodic Orbits in a Physical Double Pendulum Setup 

    E-Print Network [OSTI]

    Kothapalli, Bhargav

    2012-07-16

    This thesis aims to explain how the concepts of functional modeling are implemented in the development and validation of real-world hybrid dynamic systems. I also discuss how control theory is integrated with the design ...

  20. BOA II: pipe-asbestos insulation removal system

    SciTech Connect (OSTI)

    Schempf, H.; Mutschler; Boehmke, S.; Chemel, B.; Piepgras, C.

    1996-12-31

    BOA system is a mobile pipe-external robotic crawler used to remotely strip and bag asbestos-containing lagging and insulation materials from various diameter pipes in (primarily) industrial installations. Steam and process lines within the DOE weapons complex warrant the use of a remote device due to high labor costs and high level of radioactive contamination, making manual removal costly and inefficient. Currently targeted facilities for demonstration and remediation are Fernald in Ohio and Oak Ridge in Tennessee.

  1. Synthesis and characterization of a new layered organic-inorganic hybrid nickel(II) 1,4:5,8-naphthalenediimide bis-phosphonate, exhibiting canted antiferromagnetism, with T{sub c}{approx}21 K

    SciTech Connect (OSTI)

    Bauer, Elvira M. Bellitto, Carlo; Gomez Garcia, Carlos J. Righini, Guido

    2008-05-15

    A new Ni(II) layered hybrid organic-inorganic compound of formula Ni{sub 2}[(NDI-BP)(H{sub 2}O){sub 2}].2H{sub 2}O has been prepared in very mild conditions from N,N'-bis(2-phosphonoethyl)napthalene-1,4:5,8-tetracarboximide (NDI-BP ligand) and NiCl{sub 2}. The X-ray powder structure characterization of the title compound suggests a pillared layered organic-inorganic hybrid structure. The distance between the organic and inorganic layers has been found to be 17.8 A. The inorganic layers consist of corner sharing [NiO{sub 5}(H{sub 2}O)] octahedra and they are pillared by the diphosphonate groups. DC and AC magnetic measurements as a function of temperature and field indicate the presence of 2D antiferromagnetic exchange interactions between the nearest-neighbor Ni(II) ions below 100 K. A long-range magnetic ordering at T{sub c}{approx}21 K has been established and is attributed to the presence of spin canting. AC magnetic measurements as a function of temperature at different frequencies confirm the occurrence of the magnetic ordering temperature at T=21 K and the presence of a slight structural disorder in the title compound. - Graphical abstract: A new layered hybrid organic-inorganic Ni(II) N,N'-bis(2-phosphonoethyl)-naphthalene 1,4:5,8 tetracarboxydiimide complex has been synthesized and characterized. Magnetic measurements as a function of temperature and at different fields show that the compound is magnetically ordered below T{sub c}{approx}21 K.

  2. Calibration of the Accuscan II In Vivo System for I-125 Thyroid Counting

    SciTech Connect (OSTI)

    Ovard R. Perry; David L. Georgeson

    2011-07-01

    This report describes the March 2011 calibration of the Accuscan II HpGe In Vivo system for I-125 thyroid counting. The source used for the calibration was a DOE manufactured Am-241/Eu-152 source contained in a 22 ml vial BEA Am-241/Eu-152 RMC II-1 with energies from 26 keV to 344 keV. The center of the detector housing was positioned 64 inches from the vault floor. This position places the approximate center line of the detector housing at the center line of the source in the phantom thyroid tube. The energy and efficiency calibration were performed using an RMC II phantom (Appendix J). Performance testing was conducted using source BEA Am-241/Eu-152 RMC II-1 and Validation testing was performed using an I-125 source in a 30 ml vial (I-125 BEA Thyroid 002) and an ANSI N44.3 phantom (Appendix I). This report includes an overview introduction and records for the energy/FWHM and efficiency calibration including performance verification and validation counting. The Accuscan II system was successfully calibrated for counting the thyroid for I-125 and verified in accordance with ANSI/HPS N13.30-1996 criteria.

  3. System-Level Design: A Missing Link? Durward K. Sobek, II

    E-Print Network [OSTI]

    Sobek II, Durward K.

    the market and develop many styling alternatives. All gradually eliminate alternatives until a final design1 System-Level Design: A Missing Link? Durward K. Sobek, II Department of Mechanical and Industrial; however, from a design process standpoint, the differences are relatively few. 2 All carmakers study

  4. 1 BPP II Workshop May 1-3 2001 Ion Cyclotron Systems for Burning Plasma Experiments*

    E-Print Network [OSTI]

    (Talk by Ono on TFTR) l Launchers can be designed to handle reactor environment (disruptions, neutron of IC system design l FIRE ­ High magnetic field (10 - 12 T), compact device ­ Cu coils ­ Conceptual design; little engineering analysis done. #12;3 BPP II Workshop May 1-3 2001 Main points Ion cyclotron

  5. The number of genotypic assignments on a genealogy II. Further results for linear systems

    E-Print Network [OSTI]

    The number of genotypic assignments on a genealogy II. Further results for linear systems N. J known phenotypes could be calculated for an arbitrary genealogy. Here, we present further results for several regular genealogies constructed according to some specified recursive formulae and for which

  6. MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP

    E-Print Network [OSTI]

    MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS Thesis Approved by: Dr.................................................................................................................... 16 MODELING OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS

  7. A hybrid system for fault detection and sensor fusion based on fuzzy clustering and artificial immune systems 

    E-Print Network [OSTI]

    Jaradat, Mohammad Abdel Kareem Rasheed

    2007-04-25

    In this study, an efficient new hybrid approach for multiple sensors data fusion and fault detection is presented, addressing the problem with possible multiple faults, which is based on conventional fuzzy soft clustering and artificial immune...

  8. Preprint of: A.H. Nosrat, L.G. Swan, J.M. Pearce, Improved Performance of Hybrid Photovoltaic-Trigeneration Systems Over Photovoltaic-Cogen Systems Including Effects of Battery Storage, Energy 49, pp. 366-374 (2013). http://dx.doi.org/10.1016/j.energy.201

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2013-01-01

    load PV-cogen hybrid systems could be coupled to an absorption chiller to utilize waste heat from the cogen unit. In order to investigate realistic (non-ideal) loads that such a hybrid system would need from hybrid PV cogen and trigen systems in comparison with conventional systems. Results

  9. UBC Social Ecological Economic Development Studies (SEEDS) Student Report The Sustainability Of The Ubc Food System: Collaborative Project II

    E-Print Network [OSTI]

    . With trends towards an increasing population, a greater demand for food, and escalating amounts of waste Of The Ubc Food System: Collaborative Project II Chad Forbes, Kerry Smith, Tony Wong, Lara Jones, Vincent of a project/report". #12;1 THE SUSTAINABILITY OF THE UBC FOOD SYSTEM: COLLABORATIVE PROJECT II Agricultural

  10. Hybrid Mesons

    E-Print Network [OSTI]

    Bernhard Ketzer

    2012-08-25

    The SU(3)_flavor constituent quark model has been quite successful to explain the properties as well as the observed spectrum of mesons with pseudoscalar and vector quantum numbers. Many radial and orbital excitations of quark-antiquark systems predicted by the model, however, have not yet been observed experimentally or assigned unambiguously. In addition, a much richer spectrum of mesons is expected from QCD, in which quarks interact which each other through the exchange of colored self-interacting gluons. Owing to this particular structure of QCD, configurations are allowed in which an excited gluonic field contributes to the quantum numbers J^{PC} of the meson. States with a valence color-octet qqbar' pair neutralized in color by an excited gluon field are termed hybrids. The observation of such states, however, is difficult because they will mix with ordinary qqbar' states with the same quantum numbers, merely augmenting the observed spectrum for a given J^{PC}. Since the gluonic field may carry quantum numbers other than 0^{++}, however, this can give rise to states with "exotic" quantum numbers J^{PC}=0^{--}, 0^{+-}, 1^{-+}, 2^{+-},... The lowest-lying hybrid multiplet is expected to contain a state with exotic quantum numbers J^{PC}=1^{-+}. The identification of such a state is considered a "smoking gun" for the observation of non-qqbar mesons. The search for hybrid states has been a central goal of hadron spectroscopy in the last 20 years. Ongoing and upcoming high-statistics experiments are expected to shed new light on the existence of such states in nature. In this paper, theoretical predictions for masses and decay modes as well as recent experimental evidence for hybrid meson states and future experimental directions are discussed.

  11. Formula Hybrid International Competition

    E-Print Network [OSTI]

    Carver, Jeffrey C.

    , and computerized control systems. But the greatest obstacle of all was that hybrid cars could not meet newlyFormula Hybrid International Competition May 4, 5, 6, 2009 #12;09 annual third We are thrilled to have 30 cars competing this year. The competition is the result of the hard work of many people

  12. The Confluent System Formalism: II. The Growth History of Objects

    E-Print Network [OSTI]

    Alberto Manrique; Eduard Salvador-Sole

    1996-03-09

    With the present paper we conclude the presentation of a semianalytical model of hierarchical clustering of bound virialized objects formed by gravitational instability from a random Gaussian field of density fluctuations. In paper I, we introduced the basic tool, the so-called ``confluent system'' formalism, able to follow the evolution of bound virialized objects in the peak model. This was applied to derive the mass function of objects. In the present paper, we calculate other important quantities characterizing the growth history of objects. This model is compared with a similar one obtained by Lacey \\& Cole (1993) following the Press \\& Schechter (1974) approach. The interest of the new modeling presented here is twofold: 1) it is formally better justified as far as peaks are more reasonable seeds of objects than the indetermined regions in the Press \\& Schechter prescription, and 2) it distinguishes between merger and accretion enabling us to unambiguously define the formation and destruction of objects and to estimate growth rates and characteristic times not available in the previous approach.

  13. Arc Detection and Interlock Module for the PEP II Low Level RF System

    SciTech Connect (OSTI)

    Tighe, R.; /SLAC

    2011-08-31

    A new arc detection and interlock generating module for the SLAC PEP-II low-level RF VXI-based system has been developed. The system is required to turn off the RF drive and high voltage power supply in the event of arcing in the cavity windows, klystron window, or circulator. Infrared photodiodes receive arc signals through radiation resistant optical fibers. Gain and bandwidth are selectable for each channel to allow tailoring response. The module also responds to interlock requests from other modules in the VXI system and communicates with the programmable logic controller (PLC) responsible for much of the low-level RF system's interlock functionality.

  14. Laser Intertial Fusion Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System

    SciTech Connect (OSTI)

    Kramer, K

    2010-04-08

    This study investigates the neutronics design aspects of a hybrid fusion-fission energy system called the Laser Fusion-Fission Hybrid (LFFH). A LFFH combines current Laser Inertial Confinement fusion technology with that of advanced fission reactor technology to produce a system that eliminates many of the negative aspects of pure fusion or pure fission systems. When examining the LFFH energy mission, a significant portion of the United States and world energy production could be supplied by LFFH plants. The LFFH engine described utilizes a central fusion chamber surrounded by multiple layers of multiplying and moderating media. These layers, or blankets, include coolant plenums, a beryllium (Be) multiplier layer, a fertile fission blanket and a graphite-pebble reflector. Each layer is separated by perforated oxide dispersion strengthened (ODS) ferritic steel walls. The central fusion chamber is surrounded by an ODS ferritic steel first wall. The first wall is coated with 250-500 {micro}m of tungsten to mitigate x-ray damage. The first wall is cooled by Li{sub 17}Pb{sub 83} eutectic, chosen for its neutron multiplication and good heat transfer properties. The {sub 17}Pb{sub 83} flows in a jacket around the first wall to an extraction plenum. The main coolant injection plenum is immediately behind the Li{sub 17}Pb{sub 83}, separated from the Li{sub 17}Pb{sub 83} by a solid ODS wall. This main system coolant is the molten salt flibe (2LiF-BeF{sub 2}), chosen for beneficial neutronics and heat transfer properties. The use of flibe enables both fusion fuel production (tritium) and neutron moderation and multiplication for the fission blanket. A Be pebble (1 cm diameter) multiplier layer surrounds the coolant injection plenum and the coolant flows radially through perforated walls across the bed. Outside the Be layer, a fission fuel layer comprised of depleted uranium contained in Tristructural-isotropic (TRISO) fuel particles having a packing fraction of 20% in 2 cm diameter fuel pebbles. The fission blanket is cooled by the same radial flibe flow that travels through perforated ODS walls to the reflector blanket. This reflector blanket is 75 cm thick comprised of 2 cm diameter graphite pebbles cooled by flibe. The flibe extraction plenum surrounds the reflector bed. Detailed neutronics designs studies are performed to arrive at the described design. The LFFH engine thermal power is controlled using a technique of adjusting the {sup 6}Li/{sup 7}Li enrichment in the primary and secondary coolants. The enrichment adjusts system thermal power in the design by increasing tritium production while reducing fission. To perform the simulations and design of the LFFH engine, a new software program named LFFH Nuclear Control (LNC) was developed in C++ to extend the functionality of existing neutron transport and depletion software programs. Neutron transport calculations are performed with MCNP5. Depletion calculations are performed using Monteburns 2.0, which utilizes ORIGEN 2.0 and MCNP5 to perform a burnup calculation. LNC supports many design parameters and is capable of performing a full 3D system simulation from initial startup to full burnup. It is able to iteratively search for coolant {sup 6}Li enrichments and resulting material compositions that meet user defined performance criteria. LNC is utilized throughout this study for time dependent simulation of the LFFH engine. Two additional methods were developed to improve the computation efficiency of LNC calculations. These methods, termed adaptive time stepping and adaptive mesh refinement were incorporated into a separate stand alone C++ library name the Adaptive Burnup Library (ABL). The ABL allows for other client codes to call and utilize its functionality. Adaptive time stepping is useful for automatically maximizing the size of the depletion time step while maintaining a desired level of accuracy. Adaptive meshing allows for analysis of fixed fuel configurations that would normally require a computationally burdensome number of depletion zones. Alternatively, Adaptive M

  15. MONSTIR II: A 32-channel, multispectral, time-resolved optical tomography system for neonatal brain imaging

    SciTech Connect (OSTI)

    Cooper, Robert J. Magee, Elliott; Everdell, Nick; Magazov, Salavat; Varela, Marta; Airantzis, Dimitrios; Gibson, Adam P.; Hebden, Jeremy C.

    2014-05-15

    We detail the design, construction and performance of the second generation UCL time-resolved optical tomography system, known as MONSTIR II. Intended primarily for the study of the newborn brain, the system employs 32 source fibres that sequentially transmit picosecond pulses of light at any four wavelengths between 650 and 900 nm. The 32 detector channels each contain an independent photo-multiplier tube and temporally correlated photon-counting electronics that allow the photon transit time between each source and each detector position to be measured with high temporal resolution. The system's response time, temporal stability, cross-talk, and spectral characteristics are reported. The efficacy of MONSTIR II is demonstrated by performing multi-spectral imaging of a simple phantom.

  16. Desiccant-Based Combined Systems: Integrated Active Desiccant Rooftop Hybrid System Development and Testing Final Report- Phase 4

    SciTech Connect (OSTI)

    Fischer, J

    2005-05-06

    This report summarizes the results of a research and development (R&D) program to design and optimize an active desiccant-vapor compression hybrid rooftop system. The primary objective was to combine the strengths of both technologies to produce a compact, high-performing, energy-efficient system that could accommodate any percentage of outdoor air and deliver essentially any required combination of temperature and humidity, or sensible heat ratio (SHR). In doing so, such a product would address the significant challenges imposed on the performance capabilities of conventional packaged rooftop equipment by standards 62 and 90.1 of the American Society of Heating, Refrigerating and Air-Conditioning Engineers. The body of work completed as part of this program built upon previous R&D efforts supported by the U.S. Department of Energy and summarized by the Phase 3b report ''Active Desiccant Dehumidification Module Integration with Rooftop Packaged HVAC Units'' (Fischer and Sand 2002), in addition to Fischer, Hallstrom, and Sand 2000; Fischer 2000; and Fischer and Sand 2004. All initial design objectives established for this development program were successfully achieved. The performance flexibility desired was accomplished by a down-sized active desiccant wheel that processes only a portion of the supply airflow, which is pre-conditioned by a novel vapor compression cycle. Variable-speed compressors are used to deliver the capacity control required by a system handling a high percentage of outdoor air. An integrated direct digital control system allows for control capabilities not generally offered by conventional packaged rooftop systems. A 3000-cfm prototype system was constructed and tested in the SEMCO engineering test laboratory in Columbia, MO, and was found to operate in an energy-efficient fashion relative to more conventional systems. Most important, the system offered the capability to independently control the supply air temperature and humidity content to provide individual sensible and latent loads required by an occupied space without over-cooling and reheating air. The product was developed using a housing construction similar to that of a conventional packaged rooftop unit. The resulting integrated active desiccant rooftop (IADR) is similar in size to a currently available conventional rooftop unit sized to provide an equivalent total cooling capacity. Unlike a conventional rooftop unit, the IADR can be operated as a dedicated outdoor air system processing 100% outdoor air, as well as a total conditioning system capable of handling any ratio of return air to outdoor air. As part of this R&D program, a detailed investigation compared the first cost and operating cost of the IADR with costs for a conventional packaged approach for an office building located in Jefferson City, MO. The results of this comparison suggest that the IADR approach, once commercialized, could be cost-competitive with existing technology--exhibiting a one-year to two-year payback period--while simultaneously offering improved humidity control, indoor air quality, and energy efficiency.

  17. Multi-Disciplinary Decision Making and Optimization for Hybrid Electric Propulsion Systems

    SciTech Connect (OSTI)

    Shoultout, Mohamed L. [University of Texas at Austin; Malikopoulos, Andreas [ORNL; Pannala, Sreekanth [ORNL; Chen, Dongmei [University of Texas at Austin

    2014-01-01

    In this paper, we investigate the trade-offs among the subsystems of a hybrid electric vehicle (HEV), e.g., the engine, motor, and the battery, and discuss the related im- plications for fuel consumption and battery capacity and lifetime. Addressing this problem can provide insights on how to prioritize these objectives based on consumers needs and preferences.

  18. International Conference on Neural Networks (ICNN'96) Face Recognition Using Hybrid Classifier Systems

    E-Print Network [OSTI]

    Wechsler, Harry

    when one considers that the size of our test bed is in excess of 350 subjects and the great variability mostly because of the inherent variability of the image formation process in terms of image quality decision trees. 2. Background As hierarchical modes of processing, also referred to as hybrid, have been

  19. Hybrid solar collector using nonimaging optics and photovoltaic components

    E-Print Network [OSTI]

    2015-01-01

    and Yablonovitch, E. , Hybrid solar system, USA Provisionaland Yablonovitch, E. , Hybrid solar system, USA ProvisionalEfficiency/power Correlations,” Solar Energy, 83 (5), 614–

  20. Vehicle Technologies Office: Materials for Hybrid and Electric...

    Office of Environmental Management (EM)

    Hybrid and Electric Drive Systems Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems The Vehicle Technologies Office (VTO) is working to lower the cost...

  1. Emergency Response Equipment and Related Training: Airborne Radiological Computer System (Model II)

    SciTech Connect (OSTI)

    David P. Colton

    2007-02-28

    The materials included in the Airborne Radiological Computer System, Model-II (ARCS-II) were assembled with several considerations in mind. First, the system was designed to measure and record the airborne gamma radiation levels and the corresponding latitude and longitude coordinates, and to provide a first overview look of the extent and severity of an accident's impact. Second, the portable system had to be light enough and durable enough that it could be mounted in an aircraft, ground vehicle, or watercraft. Third, the system must control the collection and storage of the data, as well as provide a real-time display of the data collection results to the operator. The notebook computer and color graphics printer components of the system would only be used for analyzing and plotting the data. In essence, the provided equipment is composed of an acquisition system and an analysis system. The data can be transferred from the acquisition system to the analysis system at the end of the data collection or at some other agreeable time.

  2. Noise propagation in hybrid models of nonlinear systems: The Ginzburg–Landau equation

    SciTech Connect (OSTI)

    Taverniers, Søren; Alexander, Francis J.; Tartakovsky, Daniel M.

    2014-04-01

    Every physical phenomenon can be described by multiple models with varying degrees of fidelity. The computational cost of higher fidelity models (e.g., molecular dynamics simulations) is invariably higher than that of their lower fidelity counterparts (e.g., a continuum model based on differential equations). While the former might not be suitable for large-scale simulations, the latter are not universally valid. Hybrid algorithms provide a compromise between the computational efficiency of a coarse-scale model and the representational accuracy of a fine-scale description. This is achieved by conducting a fine-scale computation in subdomains where it is absolutely required (e.g., due to a local breakdown of a continuum model) and coupling it with a coarse-scale computation in the rest of a computational domain. We analyze the effects of random fluctuations generated by the fine-scale component of a nonlinear hybrid on the hybrid's overall accuracy and stability. Two variants of the time-dependent Ginzburg–Landau equation (GLE) and their discrete representations provided by a nearest-neighbor Ising model serve as a computational testbed. Our analysis shows that coupling these descriptions in a one-dimensional simulation leads to erroneous results. Adding a random source term to the GLE provides accurate prediction of the mean behavior of the quantity of interest (magnetization). It also allows the two GLE variants to correctly capture the strength of the microscale fluctuations. Our work demonstrates the importance of fine-scale noise in hybrid simulations, and suggests the need for replacing an otherwise deterministic coarse-scale component of the hybrid with its stochastic counterpart.

  3. Calibration of the Accuscan II In Vivo System for Whole Body Counting

    SciTech Connect (OSTI)

    Orval R. Perry; David L. Georgeson

    2011-08-01

    This report describes the April 2011 calibration of the Accuscan II HpGe In Vivo system for whole body counting. The source used for the calibration was a NIST traceable BOMAB manufactured by DOE as INL2006 BOMAB containing Eu-154, Eu-155, Eu-152, Sb-125 and Y-88 with energies from 27 keV to 1836 keV with a reference date of 11/29/2006. The actual usable energy range was 86.5 keV to 1597 keV on 4/21/2011. The BOMAB was constructed inside the Accuscan II counting 'tub' in the order of legs, thighs, abdomen, thorax/arms, neck, and head. Each piece was taped to the backwall of the counter. The arms were taped to the thorax. The phantom was constructed between the v-ridges on the backwall of the Accuscan II counter. The energy and efficiency calibrations were performed using the INL2006 BOMAB. The calibrations were performed with the detectors in the scanning mode. This report includes an overview introduction and records for the energy/FWHM and efficiency calibration including performance verification and validation counting. The Accuscan II system was successfully calibrated for whole body counting and verified in accordance with ANSI/HPS N13.30-1996 criteria.

  4. ModelEnabled Control of Hybrid Systems S. McIlraith, G. Biswas, M. Fromherz 1 , J. Howe 2 , R. Fikes, D. Bobrow 1 ,

    E-Print Network [OSTI]

    Pratt, Vaughan

    1 Model­Enabled Control of Hybrid Systems S. McIlraith, G. Biswas, M. Fromherz 1 , J. Howe 2 , R #12; 2 Abstract Software is used to control complex systems as varied as spacecraft, land vehicles, life support systems, and factories. Traditional methods for developing control software do not support

  5. TR-IIS-09-007 A Multi-Camera Tracking System

    E-Print Network [OSTI]

    Chen, Sheng-Wei

    Tracking Shih-Wei Sun, Hsing-Yuan Lo, Hong-Ju Lin, Yong-Sheng Chen, Fay Huang, Hong-Yuan Mark Liao July 1 Tracking Shih-Wei Sun, Hsing-Yuan Lo, Hong-Ju Lin, Yong-Sheng Chen, Fay Huang, and Hong-Yuan Mark LiaoTR-IIS-09-007 A Multi-Camera Tracking System That Can always Select A Better View to Perform

  6. Corn Hybrids for Texas. 

    E-Print Network [OSTI]

    Rogers, J. S.; McAfee, T. E.

    1954-01-01

    Corn Hybrids for Terns ST LOCATIONS AREA I AREA II ARE4 Ill AREA IV 2Prdrie View 7.Tylw lZ.Lockhart 17.Waxahachie 22San Antonio 3.Cleveland 8.Mt. Pbctont I3Brsnha B.Garland 23Lamposas 4.Colbqe Sta. 9Sulphw Spp. 14Holland l9.0reenvilb 24...Stephenville ,J* 5.K'rbyvilb I0.Cbrkdb 15.Tanpk 2ODetiion 25.Wllothe TEXAS AGRICULTURAL EXPERIMENT STATION R. D. LEWIS. DIRECTOR, COLLEGE STATION, TEXAS DIGEST The Texas corn acreage planted to hybrids increased from less than 1 percent of the total acrea...

  7. CHERI: A Hybrid Capability-System Architecture for Scalable Software Compartmentalization

    E-Print Network [OSTI]

    Watson, Robert N. M.; Woodruff, Jonathan; Neumann, Peter G.; Moore, Simon W.; Anderson, Jonathan; Chisnall, David; Dave, Nirav; Davis, Brooks; Gudka, Khilan; Laurie, Ben; Murdoch, Steven J.; Norton, Robert; Roe, Michael; Son, Stacey; Vadera, Munraj

    2015-05-26

    ’ code uses RISC pointers or source-code annotated CHERI capabilities ‘Legacy’ code compiled against a RISC ISA Per-address-space memory-management and capability executive ‘Pure-capability’ code uses CHERI capabilities for all C pointers FreeBSD kernel... + CHERI support for userspace capabilities Hybrid Netsurf links against legacy and pure-capability code Hypervisor / Separation Kernel + CHERI support for guest capabilities Capability-based single-address-space OS and applications Address...

  8. Lower-Energy Energy Storage System (LEESS) Evaluation in a Full-Hybrid Electric Vehicle (HEV) (Presentation)

    SciTech Connect (OSTI)

    Cosgrove, J.; Gonder, J.; Pesaran, A.

    2013-11-01

    The cost of hybrid electric vehicles (HEVs) (e.g., Toyota Prius or Ford Fusion Hybrid) remains several thousand dollars higher than the cost of comparable conventional vehicles, which has limited HEV market penetration. The battery energy storage device is typically the component with the greatest contribution toward this cost increment, so significant cost reductions/performance improvements to the energy storage system (ESS) can improve the vehicle-level cost-benefit relationship, which would in turn lead to larger HEV market penetration and greater aggregate fuel savings. The National Renewable Energy Laboratory (NREL) collaborated with a United States Advanced Battery Consortium (USABC) Workgroup to analyze trade-offs between vehicle fuel economy and reducing the minimum energy requirement for power-assist HEVs. NREL's analysis showed that significant fuel savings could still be delivered from an ESS with much lower energy storage than previous targets, which prompted the United States Advanced Battery Consortium (USABC) to issue a new set of lower-energy ESS (LEESS) targets that could be satisfied by a variety of technologies, including high-power batteries or ultracapacitors. NREL has developed an HEV test platform for in-vehicle performance and fuel economy validation testing of the hybrid system using such LEESS devices. This presentation describes development of the vehicle test platform and in-vehicle evaluation results using a lithium-ion capacitor ESS-an asymmetric electrochemical energy storage device possessing one electrode with battery-type characteristics (lithiated graphite) and one with ultracapacitor-type characteristics (carbon). Further efforts include testing other ultracapacitor technologies in the HEV test platform.

  9. Advanced control strategies for HVAC&R systems—An overview: Part II: Soft and fusion control

    SciTech Connect (OSTI)

    D. Subbaram Naidu; Craig G. Rieger

    2011-04-01

    A chronological overview of the advanced control strategies for HVAC&R is presented. The overview focuses on hard-computing or control techniques, such as proportional-integral-derivative, optimal, nonlinear, adaptive, and robust; soft-computing or control techniques, such as neural networks, fuzzy logic, genetic algorithms; and the fusion or hybrid of hard and soft control techniques. Part I focused on hardcontrol strategies; Part II focuses on soft and fusion control and some future directions in HVA&R research. This overview is not intended to be an exhaustive survey on this topic, and any omissions of other works is purely unintentional.

  10. Impact of plug-in hybrid electric vehicles on power systems with demand response and wind power.

    SciTech Connect (OSTI)

    Wang, J.; Liu, C.; Ton, D.; Zhou, Y.; Kim, J.; Vyas, A. (Decision and Information Sciences); ( ES); (ED); (Kyungwon Univ.)

    2011-07-01

    This paper uses a new unit commitment model which can simulate the interactions among plug-in hybrid electric vehicles (PHEVs), wind power, and demand response (DR). Four PHEV charging scenarios are simulated for the Illinois power system: (1) unconstrained charging, (2) 3-hour delayed constrained charging, (3) smart charging, and (4) smart charging with DR. The PHEV charging is assumed to be optimally controlled by the system operator in the latter two scenarios, along with load shifting and shaving enabled by DR programs. The simulation results show that optimally dispatching the PHEV charging load can significantly reduce the total operating cost of the system. With DR programs in place, the operating cost can be further reduced.

  11. DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING

    E-Print Network [OSTI]

    Authors, Various

    2012-01-01

    heat exchangers, hybrid components such as fans and pumps,for fans, pumps, and valves used in hybrid systems; heat

  12. Optimal Design of a Stand-Alone Hybrid PV/Fuel Cell Power System for the City of Brest in France

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    cell power system without battery storage to supply the electric load demand of the city of Brest energy consumption depends on the "regional sidelines" by high-voltage transmission lines through highOptimal Design of a Stand-Alone Hybrid PV/Fuel Cell Power System for the City of Brest in France

  13. Hybrid solar-fossil fuel power generation

    E-Print Network [OSTI]

    Sheu, Elysia J. (Elysia Ja-Zeng)

    2012-01-01

    In this thesis, a literature review of hybrid solar-fossil fuel power generation is first given with an emphasis on system integration and evaluation. Hybrid systems are defined as those which use solar energy and fuel ...

  14. Calibration of the Accuscan II In Vivo System for I-131 Thyroid Counting

    SciTech Connect (OSTI)

    Orval R. Perry; David L. Georgeson

    2011-07-01

    This report describes the March 2011 calibration of the Accuscan II HpGe In Vivo system for I-131 thyroid counting. The source used for the calibration was an Analytics mixed gamma source 82834-121 distributed in an epoxy matrix in a Wheaton Liquid Scintillation Vial with energies from 88.0 keV to 1836.1 keV. The center of the detectors was position 64-feet from the vault floor. This position places the approximate center line of the detectors at the center line of the source in the thyroid tube. The calibration was performed using an RMC II phantom (Appendix J). Validation testing was performed using a Ba-133 source and an ANSI N44.3 Phantom (Appendix I). This report includes an overview introduction and records for the energy/FWHM and efficiency calibrations including verification counting. The Accuscan II system was successfully calibrated for counting the thyroid for I-131 and verified in accordance with ANSI/HPS N13.30-1996 criteria.

  15. Efficiency Improvement in an Over the Road Diesel Powered Engine System by the Application of Advanced Thermoelectric Systems Implemented in a Hybrid Configuration

    Broader source: Energy.gov [DOE]

    Hybridization of heavy-duty truck propulsion with thermoelectric generator and potential efficiency enhancement

  16. Identification of Hybrid Dynamical Models of Human Movement via Switched System Optimal Control

    E-Print Network [OSTI]

    Vasudevan, Ramanarayan

    2012-01-01

    of constrained nonlinear switched dynamical systems. Inconstrained nonlinear switched dynamical systems is devised.

  17. PERFORMANCE OF THE LEAD/LIQUID ARGON SHOWER COUNTER SYSTEM OF THE MARK II DETECTOR AT SPEAR

    E-Print Network [OSTI]

    Abrams, G.S.

    2013-01-01

    of California. PERFORMANCE OF THE LEAD/LIQUID ARGON SHOWERMark II detector is a large lead/liquid argon system of theof-flight information, lead/liquid argon shower counters,

  18. Method and system for determining the torque required to launch a vehicle having a hybrid drive-train

    DOE Patents [OSTI]

    Hughes, Douglas A.

    2006-04-04

    A method and system are provided for determining the torque required to launch a vehicle having a hybrid drive-train that includes at least two independently operable prime movers. The method includes the steps of determining the value of at least one control parameter indicative of a vehicle operating condition, determining the torque required to launch the vehicle from the at least one determined control parameter, comparing the torque available from the prime movers to the torque required to launch the vehicle, and controlling operation of the prime movers to launch the vehicle in response to the comparing step. The system of the present invention includes a control unit configured to perform the steps of the method outlined above.

  19. M. D. Lemmon and P. J. Antsaklis, "On The Stability of Logical Transitions in Hybrid Control Systems," Technical Report of the ISIS (Interdisciplinary Studies of Intelligent Systems) Group, No. ISIS-93-009,

    E-Print Network [OSTI]

    Antsaklis, Panos

    Systems," Technical Report of the ISIS (Interdisciplinary Studies of Intelligent Systems) Group, No. ISIS of Logical Transitions in Hybrid Control Systems," Technical Report of the ISIS (Interdisciplinary Studies of Intelligent Systems) Group, No. ISIS-93-009, Univ of Notre Dame, December 1993. #12;M. D. Lemmon and P. J

  20. Asymmetrical Gene Flow in a Hybrid Zone of Hawaiian Schiedea (Caryophyllaceae) Species with Contrasting Mating Systems

    E-Print Network [OSTI]

    2011-01-01

    be particularly common in island systems where congenericin continental and island plant systems, a more detailedIslands, is notable for its high diversity in breeding systems

  1. Experimental Breeder Reactor-II Primary Tank System Wash Water Workshop

    Broader source: Energy.gov [DOE]

    In 1994 Congress ordered the shutdown of the Experimental Breeder Reactor-II (EBR-II) and a closure project was initiated.

  2. TEST & EVALUATION REPORT FOR THE HEDGEHOG-II PACKAGING SYSTEMS DOT-7A TYPE A CONTAINER

    SciTech Connect (OSTI)

    KELLY, D.L.

    2003-12-29

    This report documents the US. Department of Transportation Specification 7A (DOT-7A) Type A compliance test and evaluation results for the Hedgehog-II packaging systems. The approved Hedgehog-II packaging configurations provide primary and secondary containment. The approved packaging configurations described within this report are designed to ship Type A quantities of radioactive materials, normal form. Contents may be in solid or liquid form. Liquids transported in the approved 1 L glass bottle assembly shall have a specific gravity of less than or equal to 1.6. Liquids transported in all other approved configurations shall have a specific gravity of less than or equal to 2.0. The solid contents, including packaging, are limited in weight to the gross weight of the as-tested liquids and bottles. The approved Hedgehog-II packaging configurations described in this report may be transported by air, and have been evaluated as meeting the applicable International Air Transport Association/International Civil Aviation Organization (IATA/ICAO) Dangerous Goods Regulations in addition to the DOT requirements.

  3. Evaluation of the 2008 Lexus LS 600H Hybrid Synergy Drive System

    SciTech Connect (OSTI)

    Burress, T.A.; Coomer, C.L.; Campbell, S.L.; Wereszczak, A.A.; Cunningham, J.P.; Marlino, L.D.; Seiber, L.E.; Lin, H.T.

    2009-01-15

    Subsystems of the 2008 Lexus 600h hybrid electric vehicle (HEV) were studied and tested as part of an intensive benchmarking effort carried out to produce detailed information concerning the current state of nondomestic alternative vehicle technologies. Feedback provided by benchmarking efforts is particularly useful to partners of the Vehicle Technologies collaborative research program as it is essential in establishing reasonable yet challenging programmatic goals which facilitate development of competitive technologies. The competitive nature set forth by the Vehicle Technologies program not only promotes energy independence and economic stability, it also advocates the advancement of alternative vehicle technologies in an overall global perspective. These technologies greatly facilitate the potential to reduce dependency on depleting natural resources and mitigate harmful impacts of transportation upon the environment.

  4. The Blizzard Challenge 2007 --Bonn, Germany, August 25, 2007 1 CMU Blizzard 2007: A Hybrid Acoustic Unit Selection System from Statistically

    E-Print Network [OSTI]

    Black, Alan W

    of a hybrid statistical parameter generation system whose output was used to do acoustic unit selection. After Challenges were benchmarked on CMU ARCTIC databases which were typically of around one hour of speech needed more than one hour of speech to produce natural and consistent speech. Thus the Blizzard Challenge

  5. A Hybrid Sensor System for Indoor Air Quality Monitoring Yun Xiang, Ricardo Piedrahita, Robert P. Dick, Michael Hannigan, Qin Lv, Li Shang

    E-Print Network [OSTI]

    Dick, Robert

    .shang}@colorado.edu Abstract--Indoor air quality is important. It influences human productivity and health. Personal pollution pollutant exposure is important. Currently, stationary and accurate air quality monitoring sen- sors [30A Hybrid Sensor System for Indoor Air Quality Monitoring Yun Xiang, Ricardo Piedrahita, Robert P

  6. SU-E-T-20: A Novel Hybrid CBCT, Bioluminescence and Fluorescence Tomography System for Preclinical Radiation Research

    SciTech Connect (OSTI)

    Zhang, B; Eslami, S; Iordachita, I; Yang, Y; Patterson, M; Wong, J; Wang, K

    2014-06-01

    Purpose: A novel standalone bioluminescence and fluorescence tomography (BLT and FT) system equipped with high resolution CBCT has been built in our group. In this work, we present the system calibration method and validate our system in both phantom and in vivo environment. Methods: The CBCT is acquired by rotating the animal stage while keeping the x-ray source and detector panel static. The optical signal is reflected by the 3-mirror system to a multispectral filter set and then delivered to the CCD camera with f/1.4 lens mounted. Nine fibers passing through the stage and in contact with the mouse skin serve as the light sources for diffuse optical tomography (DOT) and FT. The anatomical information and optical properties acquired from the CBCT and DOT, respectively, are used as the priori information to improve the BLT/FT reconstruction accuracy. Flat field correction for the optical system was acquired at multiple wavelengths. A home-built phantom is used to register the optical and CBCT coordinates. An absolute calibration relating the CCD photon counts rate to the light fluence rate emitted at animal surface was developed to quantify the bioluminescence power or fluorophore concentration. Results: An optical inhomogeneous phantom with 2 light sources (3mm separation) imbedded is used to test the system. The optical signal is mapped onto the mesh generated from CBCT for optical reconstruction. Our preliminary results show that the center of mass can be reconstructed within 2.8mm accuracy. A live mouse with the light source imbedded is also used to validate our system. Liver or lung metastatic luminescence tumor model will be used for further testing. Conclusion: This hybrid system transforms preclinical research to a level that even sub-palpable volume of cells can be imaged rapidly and non-invasively, which largely extends the scope of radiobiological research. The research is supported by the NCI grant R01CA158100-01.

  7. Enhanced H.E.S.S. II low energies performance thanks to the focus system

    E-Print Network [OSTI]

    Trichard, C; Maurin, G; Lamanna, G

    2015-01-01

    For the current generation of Imaging Atmospheric Cherenkov Telescopes (IACTs), with their large mirrors and their cameras with fine segmentation of photodetectors, the focusing capability is a relevant issue. The optical system of an IACT has a limited depth of field. Therefore, focusing the telescopes close to the shower maximum in the atmosphere has a significant impact on the data acquisition and analysis. As the distance of the shower maximum to the telescope depends (among others) on the zenith angle, an adjustable focus would be desirable. The fifth Cherenkov telescope of the H.E.S.S. II array is equipped with a focus system which allows to adjust the position of the camera along the optical axis, possibly during data taking. This impact has been studied on gamma-ray Monte Carlo simulations, and the results in terms of gamma-ray trigger rate, energy reconstruction and gamma-ray effective area will be shown.

  8. Amplitude Linearizers for PEP-II 1.2 MW Klystrons and LLRF Systems

    SciTech Connect (OSTI)

    Van Winkle, D.; Browne, J.; Fox, J.D.; Mastorides, T.; Rivetta, C.; Teytelman, D.; /SLAC

    2006-07-18

    The PEP-II B-factory has aggressive current increases planned for luminosity through 2008. At 2.2A (HER) on 4A (LER) currents, we estimate that longitudinal growth rates will be comparable to the damping rates currently achieved in the existing low level RF and longitudinal feedback systems. Prior to having a good non-linear time domain model [1] it was postulated that klystron small signal gain non-linearity may be contributing to measured longitudinal growth rates being higher than linearly predicted growth rates. Five prototype klystron amplitude modulation linearizers have been developed to explore improved linearity in the LLRF system. The linearizers operate at 476 MHz with 15 dB dynamic range and 1 MHz linear control bandwidth. Results from lab measurements and high current beam tests are presented. Future development plans, conclusions from beam testing and ideas for future use of this linearization technique are presented.

  9. A Monolithic Microconcentrator Receiver For A Hybrid PV-Thermal System: Preliminary Performance

    E-Print Network [OSTI]

    -thermal concentrator systems offer improvements in key economic indicators, such as Levelised Cost of Energy (LCOE

  10. Diesel hybridization and emissions.

    SciTech Connect (OSTI)

    Pasquier, M.; Monnet, G.

    2004-04-21

    The CTR Vehicle Systems and Fuels team a diesel hybrid powertrain. The goal of this experiment was to investigate and demonstrate the potential of diesel engines for hybrid electric vehicles (HEVs) in a fuel economy and emissions. The test set-up consisted of a diesel engine coupled to an electric motor driving a Continuously Variable Transmission (CVT). This hybrid drive is connected to a dynamometer and a DC electrical power source creating a vehicle context by combining advanced computer models and emulation techniques. The experiment focuses on the impact of the hybrid control strategy on fuel economy and emissions-in particular, nitrogen oxides (NO{sub x}) and particulate matter (PM). The same hardware and test procedure were used throughout the entire experiment to assess the impact of different control approaches.

  11. National Geoscience Data Repository System, Phase II. Final report, January 30, 1995--January 28, 1997

    SciTech Connect (OSTI)

    1998-04-01

    The American Geological Institute (AGI) has completed Phase II of a project to establish a National Geoscience Data Repository System (NGDRS). The project`s primary objectives are to preserve geoscience data in jeopardy of being destroyed and to make that data available to those who have a need to use it in future investigations. These data are available for donation to the public as a result of the downsizing that has occurred in the major petroleum and mining companies in the United States for the past decade. In recent years, these companies have consolidated domestic operations, sold many of their domestic properties and relinquished many of their leases. The scientific data associated with those properties are no longer considered to be useful assets and are consequently in danger of being lost forever. The national repository project will make many of these data available to the geoscience community for the first time. To address this opportunity, AGI sought support from the Department of Energy (DOE) in 1994 to initiate the NGDRS Phase I feasibility study to determine the types and quantity of data that companies would be willing to donate. The petroleum and mining companies surveyed indicated that they were willing to donate approximately five million well logs, one hundred million miles of seismic reflection data, millions of linear feet of core and cuttings, and a variety of other types of scientific data. Based on the positive results of the Phase I study, AGI undertook Phase II of the program in 1995. Funded jointly by DOE and industry, Phase II encompasses the establishment of standards for indexing and cataloging of geoscience data and determination of the costs of transferring data from the private sector to public-sector data repositories. Pilot projects evaluated the feasibility of the project for transfer of different data types and creation of a Web-based metadata supercatalog and browser.

  12. Structure of the minor pseudopilin XcpW from the Pseudomonas aeruginosa type II secretion system

    SciTech Connect (OSTI)

    Franz, Laura P.; Douzi, Badreddine; Durand, Eric; Dyer, David H.; Voulhouxd, Romé; Forest, Katrina T.

    2012-01-13

    Pseudomonas aeruginosa utilizes the type II secretion machinery to transport virulence factors through the outer membrane into the extracellular space. Five proteins in the type II secretion system share sequence homology with pilin subunits of type IV pili and are called the pseudopilins. The major pseudopilin X{sub cp}T{sub G} assembles into an intraperiplasmic pilus and is thought to act in a piston-like manner to push substrates through an outer membrane secretin. The other four minor pseudopilins, X{sub cp}U{sub H}, X{sub cp}V{sub I}, X{sub cp}W{sub J} and X{sub cp}X{sub K}, play less well defined roles in pseudopilus formation. It was recently discovered that these four minor pseudopilins form a quaternary complex that is presumed to initiate the formation of the pseudopilus and to localize to its tip. Here, the structure of X{sub cp}W{sub J} was refined to 1.85 {angstrom} resolution. The structure revealed the type IVa pilin fold with an embellished variable antiparallel {beta}-sheet as also found in the X{sub cp}W{sub J} homologue enterotoxigenic Escherichia coli G{sub sp}J{sub W} and the X{sub cp}U{sub H} homologue Vibrio cholerae E{sub ps}U{sub H}. It is proposed that the exposed surface of this sheet may cradle the long N-terminal 1 helix of another pseudopilin. The final 31 amino acids of the X{sub cp}W{sub J} structure are instrinsically disordered. Deletion of this unstructured region of X{sub cp}W{sub J} did not prevent type II secretion in vivo.

  13. UBC Social Ecological Economic Development Studies (SEEDS) Student Report The Sustainability of UBC Food System Collaborative Project II

    E-Print Network [OSTI]

    UBC Social Ecological Economic Development Studies (SEEDS) Student Report The Sustainability of UBC, indicators were developed to assess the sustainability of the food system. Furthermore, we developed of a project/report". #12;The Sustainability of UBC Food System Collaborative Project II Group Three

  14. INDEX TO VIRGINIA CORN HYBRID AND MANAGEMENT TRIALS 1998 SECTION I. VIRGINIA CORN HYBRID TRIALS IN 1998.

    E-Print Network [OSTI]

    Liskiewicz, Maciej

    INDEX TO VIRGINIA CORN HYBRID AND MANAGEMENT TRIALS 1998 SECTION I. VIRGINIA CORN HYBRID TRIALS IN 1998. Companies participating in the 1998 Corn Hybrid Trials 2 1998 Virginia Corn Hybird Plot, and 1998. 36 SECTION II. EVALUATION OF DOUBLECROP CORN UNDER IRRIGATION IN EASTERN VIRGINIA. Table 27

  15. Development of Design and Simulation Tool for Hybrid Geothermal Heat Pump System

    Broader source: Energy.gov [DOE]

    This project will expand Expand eQUEST, a building energy analysis software with latest implementation of DOE-2, for simulations of HGSHP systems and improve its existing simulation capabilities for ordinary GSHP systems.

  16. A New Paradigm for Optimizing Hybrid Simulations of Rare Event Modeling for Complex Systems

    E-Print Network [OSTI]

    Johnson, Eric E.

    -scale complex systems. Most complex systems such as our cities, national air space, nuclear power plants complex systems such as our cities, national air space, nuclear power plants, theme parks and global@nmsu.edu Linda Ann Riley, Department of Industrial Engineering, linriley@nmsu.edu New Mexico State University P

  17. Worldwide wind/diesel hybrid power system study: Potential applications and technical issues

    SciTech Connect (OSTI)

    King, W.R.; Johnson, B.L. III (Science Applications International Corp., McLean, VA (USA))

    1991-04-01

    The world market potential for wind/diesel hybrid technology is a function of the need for electric power, the availability of sufficient wind resource to support wind/diesel power, and the existence of buyers with the financial means to invest in the technology. This study includes data related to each of these three factors. This study does not address market penetration, which would require analysis of application specific wind/diesel economics. Buyer purchase criteria, which are vital to assessing market penetration, are discussed only generally. Countries were screened for a country-specific market analysis based on indicators of need and wind resource. Both developed countries and less developed countries'' (LDCs) were screened for wind/diesel market potential. Based on the results of the screening, ten countries showing high market potential were selected for more extensive market analyses. These analyses provide country-specific market data to guide wind/diesel technology developers in making design decisions that will lead to a competitive product. Section 4 presents the country-specific data developed for these analyses, including more extensive wind resource characterization, application-specific market opportunities, business conditions, and energy market characterizations. An attempt was made to identify the potential buyers with ability to pay for wind/diesel technology required to meet the application-specific market opportunities identified for each country. Additionally, the country-specific data are extended to corollary opportunities in countries not covered by the study. Section 2 gives recommendations for wind/diesel research based on the findings of the study. 86 refs.

  18. A simple mathematical description of an off-grid hybrid solarwind power generating system This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Blasone, Massimo

    A simple mathematical description of an off-grid hybrid solar­wind power generating system­771 doi:10.1088/0143-0807/34/3/763 A simple mathematical description of an off-grid hybrid solar energy from the PV cells to the storage unit. In this paper we consider the energy flow in the off-grid

  19. A CLASSIFICATION SCHEME FOR THE COMMON PASSIVE AND HYBRID HEATING AND COOLING SYSTEMS

    E-Print Network [OSTI]

    Holtz, Michael J.

    2011-01-01

    INTRODUCTION A passive building design attempts, within eco-and features of the building, the passive system componentsenergy. Passive cooling also uses elements of the building

  20. Hybrid Two-Dimensional Electronic Systems and Other Applications of sp-2 Bonded Light Elements

    E-Print Network [OSTI]

    Kessler, Brian Maxwell

    2010-01-01

    Hydrogen Storage (%weight) Gravimetric Energy Density (kW-h/a hydrogen storage systems’ total gravimetric energy densityvolumetric energy density is extremely low. Hydrogen is the

  1. Evaluation of line focus solar central power systems. Volume II. Systems evaluation

    SciTech Connect (OSTI)

    Not Available

    1980-03-15

    An evaluation was completed to ascertain the applicability of line focus technologies to electrical power applications and to compare their performance and cost potential with point focus central receiver power systems. It was concluded that although the high temperature line focus (SRI) and fixed mirror line focus (GA) concepts duplicate the heat source characteristics and power conversion technology of the central receiver concepts these configurations do not offer a sufficient improvement in cost to warrant full scale development. The systems are, however, less complex than their point focus counterpart and should the central receiver system development falter they provide reasonable technology alternatives. The parabolic trough concept (BDM) was found to provide a low temperature technology alternative to the central receiver concept with promising performance and cost potential. Its continued development is recommended, with special emphasis on lower temperature (< 700/sup 0/F) applications. Finally, a variety of new promising line focus power system configurations were identified for a range of utility and industrial applications and recommendations were made on their implementation. This volume contains the detailed report. (WHK)

  2. Hybrid Fuel Cell Technology Overview

    SciTech Connect (OSTI)

    None available

    2001-05-31

    For the purpose of this STI product and unless otherwise stated, hybrid fuel cell systems are power generation systems in which a high temperature fuel cell is combined with another power generating technology. The resulting system exhibits a synergism in which the combination performs with an efficiency far greater than can be provided by either system alone. Hybrid fuel cell designs under development include fuel cell with gas turbine, fuel cell with reciprocating (piston) engine, and designs that combine different fuel cell technologies. Hybrid systems have been extensively analyzed and studied over the past five years by the Department of Energy (DOE), industry, and others. These efforts have revealed that this combination is capable of providing remarkably high efficiencies. This attribute, combined with an inherent low level of pollutant emission, suggests that hybrid systems are likely to serve as the next generation of advanced power generation systems.

  3. Three 3D hybrid networks based on octamolybdates and different Cu{sup I}/Cu{sup II}-bis(triazole) motifs

    SciTech Connect (OSTI)

    Zhang, Chun-Jing; Pang, Hai-Jun; Tang, Qun; Wang, Hui-Yuan; Chen, Ya-Guang

    2010-12-15

    Three 3D compounds based on octamolybdate clusters and various Cu{sup I}/Cu{sup II}-bis(triazole) motifs, [Cu{sup I}{sub 2}btb][{beta}-Mo{sub 8}O{sub 26}]{sub 0.5} (1), [Cu{sup I}{sub 2}btpe][{beta}-Mo{sub 8}O{sub 26}]{sub 0.5} (2), and [Cu{sup II}(btpe){sub 2}][{beta}-Mo{sub 8}O{sub 26}]{sub 0.5} (3) [btb=1,4-bis(1,2,4-triazol-1-yl)butane, btpe=1,5-bis(1,2,4-triazol-1-yl)pentane], were isolated via tuning flexible ligand spacer length and metal coordination preferences. In 1, the copper(I)-btb motif is a one-dimensional (1D) chain which is further linked by hexadentate {beta}-[Mo{sub 8}O{sub 26}]{sup 4-} clusters via coordinating to Cu{sup I} cations giving a 3D structure. In 2, the copper(I)-btpe motif exhibits a 'stairs'-like [Cu{sup I}{sub 2}btpe]{sup 2+} sheet, and the tetradentate {beta}-[Mo{sub 8}O{sub 26}]{sup 4-} clusters interact with two neighboring [Cu{sup I}{sub 2}btpe]{sup 2+} sheets constructing a 3D framework. In 3, the copper(II)-btpe motif possesses a novel (2D{yields}3D) interdigitated structure, which is further connected by the tetradentate {beta}-[Mo{sub 8}O{sub 26}]{sup 4-} clusters forming a 3D framework. The thermal stability and luminescent properties of 1-3 are investigated in the solid state. -- Graphical abstract: Three 3D compounds based on {beta}-[Mo{sub 8}O{sub 26}]{sup 4-} clusters with different Cu{sup I}/Cu{sup II}-bis(triazole) motifs were synthesized by regularly tuning flexible ligand spacer length and metal coordination preferences. Display Omitted

  4. THE WIDE-AREA ENERGY STORAGE AND MANAGEMENT SYSTEM PHASE II Final Report - Flywheel Field Tests

    SciTech Connect (OSTI)

    Lu, Ning; Makarov, Yuri V.; Weimar, Mark R.; Rudolph, Frank; Murthy, Shashikala; Arseneaux, Jim; Loutan, Clyde; Chowdhury, S.

    2010-08-31

    This research was conducted by Pacific Northwest National Laboratory (PNNL) operated for the U.S. department of Energy (DOE) by Battelle Memorial Institute for Bonneville Power Administration (BPA), California Institute for Energy and Environment (CIEE) and California Energy Commission (CEC). A wide-area energy management system (WAEMS) is a centralized control system that operates energy storage devices (ESDs) located in different places to provide energy and ancillary services that can be shared among balancing authorities (BAs). The goal of this research is to conduct flywheel field tests, investigate the technical characteristics and economics of combined hydro-flywheel regulation services that can be shared between Bonneville Power Administration (BPA) and California Independent System Operator (CAISO) controlled areas. This report is the second interim technical report for Phase II of the WAEMS project. This report presents: 1) the methodology of sharing regulation service between balancing authorities, 2) the algorithm to allocate the regulation signal between the flywheel and hydro power plant to minimize the wear-and-tear of the hydro power plants, 3) field results of the hydro-flywheel regulation service (conducted by the Beacon Power), and 4) the performance metrics and economic analysis of the combined hydro-flywheel regulation service.

  5. Porosity in hybrid materials

    SciTech Connect (OSTI)

    Schaefer, D.W.; Beaucage, G.; Loy, D. [Sandia National Labs., Albuquerque, NM (United States)

    1995-12-31

    Multicomponent, or hybrid composites are emerging as precursors to porous materials. Sacrifice of an ephemeral phase can be used to generate porosity, the nature of which depends on precursor structure. Retention of an organic constituent, on the other hand, can add desirable toughness to an otherwise brittle ceramic. We use small-angle x-ray and neutron scattering to examine porosity in both simple and hybrid materials. We find that microphase separation controls porosity in almost all systems studied. Pore distributions are controlled by the detailed bonding within and between phases as well as the flexibility of polymeric constituents. Thus hybridization opens new regions of pore distributions not available in simple systems. We look at several sacrificial concepts and show that it is possible to generate multimodal pore size distributions due to the complicated phase structure in the precursor.

  6. HYBUD: An Energy-Efficient Architecture for Hybrid Parallel Disk Systems

    E-Print Network [OSTI]

    Qin, Xiao

    Wh of electricity in the United States results in an average of 1.55 pounds (lb) of carbon dioxide (CO2) emissions but not limited to, video surveillance [1], remote-sensing database systems [2], and digital libraries [5

  7. Renewable Energy Powered Membrane Technology. 1. Development and Characterization of a Photovoltaic Hybrid Membrane System 

    E-Print Network [OSTI]

    Schäfer, Andrea; Broeckmann, Andreas; Richards, Bryce

    2007-01-01

    In isolated communities where potable water sources as well as energy grids are limited or nonexistent, treating brackish groundwater aquifers with small-scale desalination systems can be a viable alternative to existing ...

  8. Dual-temperature Kalina cycle for geothermal-solar hybrid power systems

    E-Print Network [OSTI]

    Boghossian, John G

    2011-01-01

    This thesis analyzes the thermodynamics of a power system coupling two renewable heat sources: low-temperature geothermal and a high-temperature solar. The process, referred to as a dual-temperature geothermal-solar Kalina ...

  9. Hybrid Mesons

    E-Print Network [OSTI]

    C. A. Meyer; E. S. Swanson

    2015-03-04

    A review of the theoretical and experimental status of hybrid hadrons is presented. The states $\\pi_1(1400)$, $\\pi_1(1600)$, and $\\pi_1(2015)$ are thoroughly reviewed, along with experimental results from GAMS, VES, Obelix, COMPASS, KEK, CLEO, Crystal Barrel, CLAS, and BNL. Theoretical lattice results on the gluelump spectrum, adiabatic potentials, heavy and light hybrids, and transition matrix elements are discussed. These are compared with bag, string, flux tube, and constituent gluon models. Strong and electromagnetic decay models are described and compared to lattice gauge theory results. We conclude that while good evidence for the existence of a light isovector exotic meson exists, its confirmation as a hybrid meson awaits discovery of its iso-partners. We also conclude that lattice gauge theory rules out a number of hybrid models and provides a reference to judge the success of others.

  10. Nonminimally coupled hybrid inflation

    SciTech Connect (OSTI)

    Koh, Seoktae [Center for Quantum Spacetime, Sogang University, Shinsu-dong 1, Mapo-gu, 121-742, Seoul (Korea, Republic of); Minamitsuji, Masato [Department of Physics, Graduate School of Science and Technology, Kwansei Gakuin University, Sanda 669-1337 (Japan)

    2011-02-15

    We discuss the hybrid inflation model where the inflaton field is nonminimally coupled to gravity. In the Jordan frame, the potential contains {phi}{sup 4} term as well as terms in the original hybrid inflation model. In our model, inflation can be classified into the type (I) and the type (II). In the type (I), inflation is terminated by the tachyonic instability of the waterfall field, while in the type (II) by the violation of slow-roll conditions. In our model, the reheating takes place only at the true minimum and even in the case (II) finally the tachyonic instability occurs after the termination of inflation. For a negative nonminimal coupling, inflation takes place in the vacuum-dominated region, in the large field region, or near the local minimum/maximum. Inflation in the vacuum-dominated region becomes either the type (I) or (II), resulting in a blue or red spectrum of the curvature perturbations, respectively. Inflation around the local maximum can be either the type (I) or the type (II), which results in the red spectrum of the curvature perturbations, while around the local minimum it must be the type (I), which results in the blue spectrum. In the large field region, to terminate inflation, potential in the Einstein frame must be positively tilted, always resulting in the red spectrum. We then numerically solve the equations of motion to investigate the whole dynamics of inflaton and confirm that the spectrum of curvature perturbations changes from red to blue ones as scales become smaller.

  11. Hybrid classical-quantum formulations ask for hybrid notions

    E-Print Network [OSTI]

    Carlos Barceló; Raúl Carballo-Rubio; Luis J. Garay; Ricardo Gómez-Escalante

    2013-01-28

    We reappraise some of the hybrid classical-quantum models proposed in the literature with the goal of retrieving some of their common characteristics. In particular, first, we analyze in detail the Peres-Terno argument regarding the inconsistency of hybrid quantizations of the Sudarshan type. We show that to accept such hybrid formalism entails the necessity of dealing with additional degrees of freedom beyond those in the straight complete quantization of the system. Second, we recover a similar enlargement of degrees of freedom in the so-called statistical hybrid models. Finally, we use Wigner's quantization of a simple model to illustrate how in hybrid systems the subsystems are never purely classical or quantum. A certain degree of quantumness (classicality) is being exchanged between the different sectors of the theory, which in this particular unphysical toy model makes them undistinguishable.

  12. Master's Thesis Hybrid Statistical Model Checking Technique for

    E-Print Network [OSTI]

    Master's Thesis Hybrid Statistical Model Checking Technique for Reliable Safety Critical Systems Technique for Reliable Safety Critical Systems #12;Hybrid Statistical Model Checking Technique for Reliable Safety Critical Systems Advisor : Professor Kim, Moonzoo by Kim, Youngjoo Department of Computer Science

  13. Wankel engine for hybrid powertrain

    SciTech Connect (OSTI)

    Butti, A.; Site, V.D.

    1995-12-31

    The Wankel engine is suited to be used to drive hybrid propulsion systems. The main disadvantage of hybrid propulsion systems is the complexity that causes a high weight and large dimensions. For these reason hybrid systems are more suitable for large size vehicle (buses, vans) rather than for small passenger cars. A considerable reduction of hybrid systems weight and dimensions can be obtained using a Wankel rotary engine instead of a conventional engine. The Wankel engine is light, compact, simple, and produces low noise and low vibrations. Therefore a Wankel engine powered hybrid system is suited to be used on small cars. In this paper a 1,000 kg parallel hybrid car with continuously variable transmission and a 6,000 kg series hybrid minibus both equipped with Wankel engines are considered. The Wankel engine works at steady state to minimize fuel consumption and exhaust emissions. The simulation of the behavior of these two vehicles during a ECE + EUDC test cycle is presented in order to evaluate the performances of the systems.

  14. A hybrid approach for the modal analysis of continuous systems with localized nonlinear constraints.

    SciTech Connect (OSTI)

    Brake, Matthew Robert

    2010-10-01

    The analysis of continuous systems with nonlinearities in their domain have previously been limited to either numerical approaches, or analytical methods that are constrained in the parameter space, boundary conditions, or order of the system. The present analysis develops a robust method for studying continuous systems with arbitrary boundary conditions and nonlinearities using the assumption that the nonlinear constraint can be modeled with a piecewise-linear force-deflection constitutive relationship. Under this assumption, a superposition method is used to generate homogeneous boundary conditions, and modal analysis is used to find the displacement of the system in each state of the piecewise-linear nonlinearity. In order to map across each nonlinearity in the piecewise-linear force-deflection profile, a variational calculus approach is taken that minimizes the L2 energy norm between the previous and current states. To illustrate this method, a leaf spring coupled with a connector pin immersed in a viscous fluid is modeled as a beam with a piecewise-linear constraint. From the results of the convergence and parameter studies, a high correlation between the finite-time Lyapunov exponents and the contact time per period of the excitation is observed. The parameter studies also indicate that when the system's parameters are changed in order to reduce the magnitude of the velocity impact between the leaf spring and connector pin, the extent of the regions over which a chaotic response is observed increases.

  15. Investigation of Synergy Between Electrochemical Capacitors, Flywheels, and Batteries in Hybrid Energy Storage for PV Systems

    SciTech Connect (OSTI)

    Miller, John; Sibley, Lewis, B.; Wohlgemuth, John

    1999-06-01

    This report describes the results of a study that investigated the synergy between electrochemical capacitors (ECs) and flywheels, in combination with each other and with batteries, as energy storage subsystems in photovoltaic (PV) systems. EC and flywheel technologies are described and the potential advantages and disadvantages of each in PV energy storage subsystems are discussed. Seven applications for PV energy storage subsystems are described along with the potential market for each of these applications. A spreadsheet model, which used the net present value method, was used to analyze and compare the costs over time of various system configurations based on flywheel models. It appears that a synergistic relationship exists between ECS and flywheels. Further investigation is recommended to quantify the performance and economic tradeoffs of this synergy and its effect on overall system costs.

  16. A Vehicle Systems Approach to Evaluate Plug-in Hybrid Battery Cold Start, Life and Cost Issues 

    E-Print Network [OSTI]

    Shidore, Neeraj Shripad

    2012-07-16

    The batteries used in plug-in hybrid electric vehicles (PHEVs) need to overcome significant technical challenges in order for PHEVs to become economically viable and have a large market penetration. The internship at Argonne National Laboratory (ANL...

  17. Laser Inertial Fusion-based Energy: Neutronic Design Aspects of a Hybrid Fusion-Fission Nuclear Energy System

    E-Print Network [OSTI]

    Kramer, Kevin James

    2010-01-01

    4.3.3.4 Chamber Radius and Fusion Neutron Flux . . . . .1.1.3.2 Fusion Energy . . . . . . . . .1.1.3.3 Fission-Fusion Hybrids . . . . 1.2 Scope and Purpose

  18. Optimal Control of a Grid-Connected Hybrid Electrical Energy Storage System for Homes

    E-Print Network [OSTI]

    Pedram, Massoud

    with the introduction of dynamic electricity energy pricing models since electricity consumers can use their PV function and the energy storage capacity limitation, the control algorithm for a residential EES system period under a general electricity energy price function. The proposed algorithm is based on dynamic

  19. Maximizing Return on Investment of a Grid-Connected Hybrid Electrical Energy Storage System

    E-Print Network [OSTI]

    Pedram, Massoud

    -of-day pricing policy [3] with much higher energy price during peak hours for residential users, incentivizing energy when the electricity price is low and supply energy for use when the electricity price is high [6/or supercapacitors. Incorporation of EES system effectively shifts the residential peak hour energy demand from

  20. A Hybrid Multiagent Framework with Q-Learning for Power Grid Systems Restoration

    E-Print Network [OSTI]

    Zhang, Minjie

    . INTRODUCTION In an electricity network, catastrophic disturbances involv- ing loss of generators can lead following catastrophic disturbances involving loss of generators. This framework integrates the advantages such failures, it is necessary to include restoration approaches in power grid systems. The general principle

  1. Perchlorate Degradation Using Partially Oxidized Titanium Ions and Ion Exchange Membrane Hybrid System 

    E-Print Network [OSTI]

    Park, Sung Hyuk

    2011-08-08

    + and Ti3+) in solutions and as part of an ion exchange membrane reactor system. Aqueous titanium ions (Ti2+ and Ti3+) were applied to remove perchlorate ions and its destructive mechanism, reaction kinetics, and the effect of environmental factors were...

  2. Hybrid expert system - neural network - Fuzzy Logic methodology for transient identification

    SciTech Connect (OSTI)

    Ikonomopoulos, A.; Tsoukalas, L.H. (Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering); Uhrig, R.E. (Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering Oak Ridge National Lab., TN (United States))

    1991-01-01

    A methodology is presented that demonstrates the potential of pretrained artificial neural networks (ANN's) as generators of membership functions for the purpose of transient identification in Nuclear Power Plants (NPP). In order to provide timely concise and task-specific information about the many aspects of the transient and to determine the state of the system based on the interpretation of potentially noisy data, a model-referenced approach is utilized, where pretrained ANNs provide the model. Membership functions -- that condense information about a transient in a form convenient for a rule-based identification system -- are produced through ANN'S. The results demonstrate the extremely good noise-tolerance of ANN's and suggest a new method for transient identification within the framework of Fuzzy Logic.

  3. Hybrid expert system - neural network - Fuzzy Logic methodology for transient identification

    SciTech Connect (OSTI)

    Ikonomopoulos, A.; Tsoukalas, L.H. [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering; Uhrig, R.E. [Tennessee Univ., Knoxville, TN (United States). Dept. of Nuclear Engineering]|[Oak Ridge National Lab., TN (United States)

    1991-12-31

    A methodology is presented that demonstrates the potential of pretrained artificial neural networks (ANN`s) as generators of membership functions for the purpose of transient identification in Nuclear Power Plants (NPP). In order to provide timely concise and task-specific information about the many aspects of the transient and to determine the state of the system based on the interpretation of potentially noisy data, a model-referenced approach is utilized, where pretrained ANNs provide the model. Membership functions -- that condense information about a transient in a form convenient for a rule-based identification system -- are produced through ANN`S. The results demonstrate the extremely good noise-tolerance of ANN`s and suggest a new method for transient identification within the framework of Fuzzy Logic.

  4. Thermosyphon Cooler Hybrid System Providing Water Resiliency in a typical Chemical Plant 

    E-Print Network [OSTI]

    Carter, T. P.

    2014-01-01

    System Providing Water Resiliency in a Typical Chemical Plant Presentation to the: May 21, 2014 Thomas P. Carter, P.E. Sr. Program Manager, Heat Rejection Technology Johnson Controls, Building Efficiency thomas.p.carter@jci.com ESL-IE-14...-05-20 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 2Johnson Controls is a globally diversified company in the building and automotive industries Automotive ExperienceBuilding Efficiency Power Solutions...

  5. Theory and Implementation of Nuclear Safety System Codes - Part II: System Code Closure Relations, Validation, and Limitations

    SciTech Connect (OSTI)

    Glenn A Roth; Fatih Aydogan

    2014-09-01

    This is Part II of two articles describing the details of thermal-hydraulic sys- tem codes. In this second part of the article series, the system code closure relationships (used to model thermal and mechanical non-equilibrium and the coupling of the phases) for the governing equations are discussed and evaluated. These include several thermal and hydraulic models, such as heat transfer coefficients for various flow regimes, two phase pressure correlations, two phase friction correlations, drag coefficients and interfacial models be- tween the fields. These models are often developed from experimental data. The experiment conditions should be understood to evaluate the efficacy of the closure models. Code verification and validation, including Separate Effects Tests (SETs) and Integral effects tests (IETs) is also assessed. It can be shown from the assessments that the test cases cover a significant section of the system code capabilities, but some of the more advanced reactor designs will push the limits of validation for the codes. Lastly, the limitations of the codes are discussed by considering next generation power plants, such as Small Modular Reactors (SMRs), analyz- ing not only existing nuclear power plants, but also next generation nuclear power plants. The nuclear industry is developing new, innovative reactor designs, such as Small Modular Reactors (SMRs), High-Temperature Gas-cooled Reactors (HTGRs) and others. Sub-types of these reactor designs utilize pebbles, prismatic graphite moderators, helical steam generators, in- novative fuel types, and many other design features that may not be fully analyzed by current system codes. This second part completes the series on the comparison and evaluation of the selected reactor system codes by discussing the closure relations, val- idation and limitations. These two articles indicate areas where the models can be improved to adequately address issues with new reactor design and development.

  6. Long-Term Instrumentation, Information, and Control Systems (II&C) Modernization Future Vision and Strategy

    SciTech Connect (OSTI)

    Kenneth Thomas

    2012-02-01

    Life extension beyond 60 years for the U.S operating nuclear fleet requires that instrumentation and control (I&C) systems be upgraded to address aging and reliability concerns. It is impractical for the legacy systems based on 1970's vintage technology operate over this extended time period. Indeed, utilities have successfully engaged in such replacements when dictated by these operational concerns. However, the replacements have been approached in a like-for-like manner, meaning that they do not take advantage of the inherent capabilities of digital technology to improve business functions. And so, the improvement in I&C system performance has not translated to bottom-line performance improvement for the fleet. Therefore, wide-scale modernization of the legacy I&C systems could prove to be cost-prohibitive unless the technology is implemented in a manner to enable significant business innovation as a means of off-setting the cost of upgrades. A Future Vision of a transformed nuclear plant operating model based on an integrated digital environment has been developed as part of the Advanced Instrumentation, Information, and Control (II&C) research pathway, under the Light Water Reactor (LWR) Sustainability Program. This is a research and development program sponsored by the U.S. Department of Energy (DOE), performed in close collaboration with the nuclear utility industry, to provide the technical foundations for licensing and managing the long-term, safe and economical operation of current nuclear power plants. DOE's program focus is on longer-term and higher-risk/reward research that contributes to the national policy objectives of energy security and environmental security . The Advanced II&C research pathway is being conducted by the Idaho National Laboratory (INL). The Future Vision is based on a digital architecture that encompasses all aspects of plant operations and support, integrating plant systems, plant work processes, and plant workers in a seamless digital environment to enhance nuclear safety, increase productivity, and improve overall plant performance. The long-term goal is to transform the operating model of the nuclear power plants (NPP)s from one that is highly reliant on a large staff performing mostly manual activities to an operating model based on highly integrated technology with a smaller staff. This digital transformation is critical to addressing an array of issues facing the plants, including aging of legacy analog systems, potential shortage of technical workers, ever-increasing expectations for nuclear safety improvement, and relentless pressure to reduce cost. The Future Vision is based on research is being conducted in the following major areas of plant function: (1) Highly integrated control rooms; (2) Highly automated plant; (3) Integrated operations; (4) Human performance improvement for field workers; and (5) Outage safety and efficiency. Pilot projects will be conducted in each of these areas as the means for industry to collectively integrate these new technologies into nuclear plant work activities. The pilot projects introduce new digital technologies into the nuclear plant operating environment at host operating plants to demonstrate and validate them for production usage. In turn, the pilot project technologies serve as the stepping stones to the eventual seamless digital environment as described in the Future Vision.

  7. Long-Term Instrumentation, Information, and Control Systems (II&C) Modernization Future Vision and Strategy

    SciTech Connect (OSTI)

    Kenneth Thomas; Bruce Hallbert

    2013-02-01

    Life extension beyond 60 years for the U.S operating nuclear fleet requires that instrumentation and control (I&C) systems be upgraded to address aging and reliability concerns. It is impractical for the legacy systems based on 1970’s vintage technology operate over this extended time period. Indeed, utilities have successfully engaged in such replacements when dictated by these operational concerns. However, the replacements have been approached in a like-for-like manner, meaning that they do not take advantage of the inherent capabilities of digital technology to improve business functions. And so, the improvement in I&C system performance has not translated to bottom-line performance improvement for the fleet. Therefore, wide-scale modernization of the legacy I&C systems could prove to be cost-prohibitive unless the technology is implemented in a manner to enable significant business innovation as a means of off-setting the cost of upgrades. A Future Vision of a transformed nuclear plant operating model based on an integrated digital environment has been developed as part of the Advanced Instrumentation, Information, and Control (II&C) research pathway, under the Light Water Reactor (LWR) Sustainability Program. This is a research and development program sponsored by the U.S. Department of Energy (DOE), performed in close collaboration with the nuclear utility industry, to provide the technical foundations for licensing and managing the long-term, safe and economical operation of current nuclear power plants. DOE’s program focus is on longer-term and higher-risk/reward research that contributes to the national policy objectives of energy security and environmental security . The Advanced II&C research pathway is being conducted by the Idaho National Laboratory (INL). The Future Vision is based on a digital architecture that encompasses all aspects of plant operations and support, integrating plant systems, plant work processes, and plant workers in a seamless digital environment to enhance nuclear safety, increase productivity, and improve overall plant performance. The long-term goal is to transform the operating model of the nuclear power plants (NPP)s from one that is highly reliant on a large staff performing mostly manual activities to an operating model based on highly integrated technology with a smaller staff. This digital transformation is critical to addressing an array of issues facing the plants, including aging of legacy analog systems, potential shortage of technical workers, ever-increasing expectations for nuclear safety improvement, and relentless pressure to reduce cost. The Future Vision is based on research is being conducted in the following major areas of plant function: 1. Highly integrated control rooms 2. Highly automated plant 3. Integrated operations 4. Human performance improvement for field workers 5. Outage safety and efficiency. Pilot projects will be conducted in each of these areas as the means for industry to collectively integrate these new technologies into nuclear plant work activities. The pilot projects introduce new digital technologies into the nuclear plant operating environment at host operating plants to demonstrate and validate them for production usage. In turn, the pilot project technologies serve as the stepping stones to the eventual seamless digital environment as described in the Future Vision.

  8. Implementation Hybrid Trace Verifier (HTV) implements our

    E-Print Network [OSTI]

    Liberzon, Daniel

    to larger problems. References [1] S. Mitra. A Verification Framework for Hybrid Systems. PhD thesis. [3] A. Fehnker and F. Ivaneie. Benchmarks for hybrid systems verification. HSCC, 2993, 2004. A satellite maneuver system. 3. A version of room heating benchmark. 4. An engine control system

  9. Framework for the Economic Analysis of Hybrid Systems Based on Exergy Consumption

    SciTech Connect (OSTI)

    Cristian Rabiti; Robert S. Cherry; Wesley R. Deason; Piyush Sabharwall; Shannon M. Bragg-Sitton; Richard D. Boardman

    2014-08-01

    Starting from an overview of the dynamic behavior of the electricity market the need of the introduction of energy users that will provide a damping capability to the system is derived as also a qualitative analysis of the impact of uncertainty, both in the demand and supply side, is performed. Then it follows an introduction to the investment analysis methodologies based on the discounting of the cash flow, and then work concludes with the illustration and application of the exergonomic principles to provide a sound methodology for the cost accounting of the plant components to be used in the cash flow analysis.

  10. J. A. Stiver and P. J. Antsaklis, "A Novel Discrete Event System Approach to Modeling and Analysis of Hybrid Control Sysytems," Control Systems Technical Report #71, Dept. of Electrical Engineering,

    E-Print Network [OSTI]

    Antsaklis, Panos

    of Hybrid Control Sysytems," Control Systems Technical Report #71, Dept. of Electrical Engineering. of Electrical Engineering, University of Notre Dame, June 1991. #12;J. A. Stiver and P. J. Antsaklis, "A Novel Technical Report #71, Dept. of Electrical Engineering, University of Notre Dame, June 1991. #12;J. A. Stiver

  11. Technical Challenges of Plug-In Hybrid Electric Vehicles and Impacts to the US Power System: Distribution System Analysis

    SciTech Connect (OSTI)

    Gerkensmeyer, Clint; Kintner-Meyer, Michael CW; DeSteese, John G.

    2010-01-01

    This report documents work conducted by Pacific Northwest National Laboratory (PNNL) for the Department of Energy (DOE) to address three basic questions concerning how typical existing electrical distribution systems would be impacted by the addition of PHEVs to residential loads.

  12. EASY-II: a system for modelling of n, d, p, {\\gamma} and {\\alpha} activation and transmutation processes

    E-Print Network [OSTI]

    Sublet, Jean-Christophe; Morgan, Guy; Koning, Arjan; Rochman, Dimitri

    2013-01-01

    EASY-II is designed as a functional replacement for the previous European Activation System, EASY-2010. It has extended nuclear data and new software, FISPACT-II, written in object-style Fortran to provide new capabilities for predictions of activation, transmutation, depletion and burnup. The new FISPACT-II code has allowed us to implement many more features in terms of energy range, up to GeV; incident particles: alpha, gamma, proton, deuteron and neutron; and neutron physics: self-shielding effects, temperature dependence, pathways analysis, sensitivity and error estimation using covariance data. These capabilities cover most application needs: nuclear fission and fusion, accelerator physics, isotope production, waste management and many more. In parallel, the maturity of modern general-purpose libraries such as TENDL-2012 encompassing thousands of target nuclides, the evolution of the ENDF format and the capabilities of the latest generation of processing codes PREPRO-2012, NJOY2012 and CALENDF-2010 have ...

  13. HYBRID ALARM SYSTEMS: COMBINING SPATIAL ALARMS AND ALARM LISTS FOR OPTIMIZED CONTROL ROOM OPERATION

    SciTech Connect (OSTI)

    Ronald L. Boring; J.J. Persensky

    2012-07-01

    The US Department of Energy (DOE) is sponsoring research, development, and deployment on Light Water Reactor Sustainability (LWRS), in which the Idaho National Laboratory (INL) is working closely with nuclear utilities to develop technologies and solutions to help ensure the safe operational life extension of current nuclear power plants. One of the main areas of focus is control room modernization. Within control room modernization, alarm system upgrades present opportunities to meet the broader goals of the LWRS project in demonstrating the use and safety of the advanced instrumentation and control (I&C) technologies and the short-term and longer term objectives of the plant. In this paper, we review approaches for and human factors issues behind upgrading alarms in the main control room of nuclear power plants.

  14. Hybrid optimal control Notes for CIRA course, Bertinoro 2003.

    E-Print Network [OSTI]

    Piccoli, Benedetto

    Hybrid optimal control Notes for CIRA course, Bertinoro 2003. Benedetto Piccoli # Abstract. These notes are devoted to the use of some analytical tools for hybrid optimal control. After introducing basic notations for a quite general class of hybrid systems, we state both the Hybrid Maximum Principle

  15. Applied Formal Methods -From CSP to Executable Hybrid Specifications

    E-Print Network [OSTI]

    Peleska, Jan - Fachbereich 3

    research about Hybrid Statecharts Test Automation for Hybrid Systems motivates research about Hybrid Low Integrated Modular Avioncis (A380) (Verified Systems 2002...) Development of Railway Control Systems from VERIFIED SYSTEMS INTERNATIONAL GMBH #12;Specification-Based Hard Real-Time Testing Building blocks

  16. Development and Optimization of Modular Hybrid Plasma Reactor...

    Office of Scientific and Technical Information (OSTI)

    Optimization of Modular Hybrid Plasma Reactor N A 36 MATERIALS SCIENCE INL developed a bench-scale, modular hybrid plasma system for gas-phase nanomaterials synthesis. The system...

  17. Hybrid Combustion-Gasification Chemical Looping

    SciTech Connect (OSTI)

    Herbert Andrus; Gregory Burns; John Chiu; Gregory Lijedahl; Peter Stromberg; Paul Thibeault

    2009-01-07

    For the past several years Alstom Power Inc. (Alstom), a leading world-wide power system manufacturer and supplier, has been in the initial stages of developing an entirely new, ultra-clean, low cost, high efficiency power plant for the global power market. This new power plant concept is based on a hybrid combustion-gasification process utilizing high temperature chemical and thermal looping technology The process consists of the oxidation, reduction, carbonation, and calcination of calcium-based compounds, which chemically react with coal, biomass, or opportunity fuels in two chemical loops and one thermal loop. The chemical and thermal looping technology can be alternatively configured as (i) a combustion-based steam power plant with CO{sub 2} capture, (ii) a hybrid combustion-gasification process producing a syngas for gas turbines or fuel cells, or (iii) an integrated hybrid combustion-gasification process producing hydrogen for gas turbines, fuel cells or other hydrogen based applications while also producing a separate stream of CO{sub 2} for use or sequestration. In its most advanced configuration, this new concept offers the promise to become the technology link from today's Rankine cycle steam power plants to tomorrow's advanced energy plants. The objective of this work is to develop and verify the high temperature chemical and thermal looping process concept at a small-scale pilot facility in order to enable AL to design, construct and demonstrate a pre-commercial, prototype version of this advanced system. In support of this objective, Alstom and DOE started a multi-year program, under this contract. Before the contract started, in a preliminary phase (Phase 0) Alstom funded and built the required small-scale pilot facility (Process Development Unit, PDU) at its Power Plant Laboratories in Windsor, Connecticut. Construction was completed in calendar year 2003. The objective for Phase I was to develop the indirect combustion loop with CO{sub 2} separation, and also syngas production from coal with the calcium sulfide (CaS)/calcium sulfate (CaSO{sub 4}) loop utilizing the PDU facility. The results of Phase I were reported in Reference 1, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase I Report' The objective for Phase II was to develop the carbonate loop--lime (CaO)/calcium carbonate (CaCO{sub 3}) loop, integrate it with the gasification loop from Phase I, and ultimately demonstrate the feasibility of hydrogen production from the combined loops. The results of this program were reported in Reference 3, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase II Report'. The objective of Phase III is to operate the pilot plant to obtain enough engineering information to design a prototype of the commercial Chemical Looping concept. The activities include modifications to the Phase II Chemical Looping PDU, solids transportation studies, control and instrumentation studies and additional cold flow modeling. The deliverable is a report making recommendations for preliminary design guidelines for the prototype plant, results from the pilot plant testing and an update of the commercial plant economic estimates.

  18. Hybrid Model for Building Performance Diagnosis and Optimal Control 

    E-Print Network [OSTI]

    Wang, S.; Xu, X.

    2003-01-01

    S. (1983). Raising the open U value by passive means. Proc. 8th Nat. Passive Solar Conf. Glorieta, NM, pp.839-842. Bahai H. and Esat I.I. (1994). A hybrid model for analysis of complex stress distribution in threaded connectors. Computers... Research Centre of Finland. Kalogirou SA, Neocleous CC and Schizas CN. (1997). Heating load estimation using artificial neural networks. In: Proc. CLIMA 2000 Conf., Brussels (Belgium). Klein S.A., Beckman W.A. et al. (1994). TRNSYS-A Transient System...

  19. Intuitionistic Hybrid Logic Torben Brauner a,1

    E-Print Network [OSTI]

    de Paiva, Valeria

    to hybridize constructive modal logics. Alternative systems are discussed, but we fix on a reasonable and well deduction formulation of it. Our nat- ural deduction system is also extended with additional inference rules give natural deduction systems in a uniform way for a wide class of constructive hybrid logics

  20. Integration of autonomous systems for remote control of data acquisition and diagnostics in the TJ-II device

    SciTech Connect (OSTI)

    Vega, J.; Mollinedo, A.; Lopez, A.; Pacios, L.

    1997-01-01

    The data acquisition system for TJ-II will consist of a central computer, containing the data base of the device, and a set of independent systems (personal computers, embedded ones, workstations, minicomputers, PLCs, and microprocessor systems among others), controlling data collection, and automated diagnostics. Each autonomous system can be used to isolate and manage specific problems in the most efficient manner. These problems are related to data acquisition, hard ({mu}s{endash}ms) real time requirements, soft (ms{endash}s) real time requirements, remote control of diagnostics, etc. In the operation of TJ-II, the programming of systems will be carried out from the central computer. Coordination and synchronization will be performed by linking systems to local area networks. Several Ethernet segments and FDDI rings will be used for these purposes. Programmable logic controller devices (PLCs) used for diagnostic low level control will be linked among them through a fast serial link, the RS485 Profibus standard. One VME crate, running on the OS-9 real time operating system, will be assigned as a gateway, so as to connect the PLCs based systems with an Ethernet segment. {copyright} {ital 1997 American Institute of Physics.}