National Library of Energy BETA

Sample records for on-site generating systems

  1. Microgrids: distributed on-site generation

    E-Print Network [OSTI]

    Watson, Andrew

    of the study is a microgrid of domestic users powered by small Combined Heat and Power generators and energy storage in the microgrid. It is found that a microgrid consisting of around 1.4 kWp PV array perMicrogrids: distributed on-site generation Suleiman Abu-Sharkh, Rachel Li, Tom Markvart, Neil Ross

  2. Adapting On-Site Electrical Generation Platforms for Producer...

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

    Adapting On-Site Electrical Generation Platforms for Producer Gas - Fact Sheet, April 2014 Adapting On-Site Electrical Generation Platforms for Producer Gas - Fact Sheet, April...

  3. Adapting On-site Electrical Generation Platforms for Producer Gas

    Broader source: Energy.gov [DOE]

    Internal combustion reciprocating engine generators (gensets) are regularly deployed at distribution centers, small municipal utilities, and public institutions to provide on-site electricity...

  4. On-Site Generation Simulation with EnergyPlus for Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael; Firestone, Ryan; Curtil, Dimitri; Marnay, Chris

    2006-01-01

    L ABORATORY On-Site Generation Simulation with EnergyPlusemployer. On-Site Generation Simulation with EnergyPlus forin modeling distributed generation (DG), including DG with

  5. On-Site Wastewater Treatment Systems: Graywater 

    E-Print Network [OSTI]

    Melton, Rebecca; Lesikar, Bruce J.; Smith, David; O'Neill, Courtney

    2008-04-03

    . meet plant water requirements during peak-water-use months. However, such sizing can follow the guidelines for the soil-absorption component of an onsite wastewater treatment system. These sizing guidelines are based on type of soil accepting... State Soil and Water Conservation Board USEPA 319(h) Program Texas On-Site Wastewater Treatment Research Council Texas AgriLife Extension Service Texas Commission on Environmental Quality Texas AgriLife Research USDA Water Quality Demonstration...

  6. On-Site Wastewater Treatment Systems: Selecting and Permitting (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2005-04-30

    This publication explains how to select and obtain a permit for an on-site wastewater treatment system in Texas....

  7. On-Site Wastewater Treatment Systems: Spray Distribution (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    1999-08-12

    Spray distribution systems for wastewater treated on site are much like lawn irrigation systems. This publication explains the advantages, disadvantages, maintenance steps and estimated costs of spray distribution systems.

  8. On-Site Wastewater Treatment Systems: Mound System 

    E-Print Network [OSTI]

    Lesikar, B.; Waynard, V.

    2002-01-01

    system is generally a septic tank, which re- moves the settleable and floatable solids from the wastewater. Advanced pretreatment systems, such as aerobic treatment units or media filters, can also be used to remove additional solids and organic matter..., New For Sale Only $1 The On-Site Wastewater Treatment Systems series of publications is a result of collaborative efforts of various agencies, organizations and funding sources. We would like to acknowledge the following collaborators: Texas State Soil...

  9. University of Delaware Technical Analysis for On-Site Wind Generation

    E-Print Network [OSTI]

    Firestone, Jeremy

    Sustainable Energy Developments, Inc. (SED) performed a technical assessment for an on-site wind turbineUniversity of Delaware Technical Analysis for On-Site Wind Generation Lewes Campus Summary overview of the detailed feasibility study performed for an on-site wind turbine development

  10. Customer adoption of small-scale on-site power generation

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; Marnay, Chris; Hamachi, Kristina S.; Rubio, F. Javier

    2001-01-01

    of Small-Scale On-Site Power Generation Afzal S. Siddiqui,technologies will tilt power generation economics in favourquality. This pattern of power generation and consumption is

  11. Optimal selection of on-site generation with combined heat andpower applications

    SciTech Connect (OSTI)

    Siddiqui, Afzal S.; Marnay, Chris; Bailey, Owen; HamachiLaCommare, Kristina

    2004-11-30

    While demand for electricity continues to grow, expansion of the traditional electricity supply system, or macrogrid, is constrained and is unlikely to keep pace with the growing thirst western economies have for electricity. Furthermore, no compelling case has been made that perpetual improvement in the overall power quality and reliability (PQR)delivered is technically possible or economically desirable. An alternative path to providing high PQR for sensitive loads would generate close to them in microgrids, such as the Consortium for Electricity Reliability Technology Solutions (CERTS) Microgrid. Distributed generation would alleviate the pressure for endless improvement in macrogrid PQR and might allow the establishment of a sounder economically based level of universal grid service. Energy conversion from available fuels to electricity close to loads can also provide combined heat and power (CHP) opportunities that can significantly improve the economics of small-scale on-site power generation, especially in hot climates when the waste heat serves absorption cycle cooling equipment that displaces expensive on-peak electricity. An optimization model, the Distributed Energy Resources Customer Adoption Model (DER-CAM), developed at Berkeley Lab identifies the energy bill minimizing combination of on-site generation and heat recovery equipment for sites, given their electricity and heat requirements, the tariffs they face, and a menu of available equipment. DER-CAM is used to conduct a systemic energy analysis of a southern California naval base building and demonstrates atypical current economic on-site power opportunity. Results achieve cost reductions of about 15 percent with DER, depending on the tariff.Furthermore, almost all of the energy is provided on-site, indicating that modest cost savings can be achieved when the microgrid is free to select distributed generation and heat recovery equipment in order to minimize its over all costs.

  12. On-Site Wastewater Treatment Systems: Selecting and Permitting 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2005-04-30

    This publication explains factors to consider when choosing an on-site wastewater treatment system and lists the nine steps required to obtain a permit for one. It includes addresses and phone numbers of Texas Natural Resource Conservation...

  13. Customer adoption of small-scale on-site power generation

    SciTech Connect (OSTI)

    Siddiqui, Afzal S.; Marnay, Chris; Hamachi, Kristina S.; Rubio, F. Javier

    2001-04-01

    The electricity supply system is undergoing major regulatory and technological change with significant implications for the way in which the sector will operate (including its patterns of carbon emissions) and for the policies required to ensure socially and environmentally desirable outcomes. One such change stems from the rapid emergence of viable small-scale (i.e., smaller than 500 kW) generators that are potentially competitive with grid delivered electricity, especially in combined heat and power configurations. Such distributed energy resources (DER) may be grouped together with loads in microgrids. These clusters could operate semi-autonomously from the established power system, or macrogrid, matching power quality and reliability more closely to local end-use requirements. In order to establish a capability for analyzing the effect that microgrids may have on typical commercial customers, such as office buildings, restaurants, shopping malls, and grocery stores, an economic mod el of DER adoption is being developed at Berkeley Lab. This model endeavors to indicate the optimal quantity and type of small on-site generation technologies that customers could employ given their electricity requirements. For various regulatory schemes and general economic conditions, this analysis produces a simple operating schedule for any installed generators. Early results suggest that many commercial customers can benefit economically from on-site generation, even without considering potential combined heat and power and reliability benefits, even though they are unlikely to disconnect from the established power system.

  14. On-Site Diesel Generation- How You Can Reduce Your Energy Costs 

    E-Print Network [OSTI]

    Charles, D.

    1996-01-01

    Interruptible power rates, Utility special rate negotiations, and the emergence of a spot electrical power market all can lead to lower industrial energy costs. The installation of low cost on-site diesel powered generation, or the proposed...

  15. On-Site Wastewater Treatment Systems: Gravel-less Pipe 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2000-04-10

    absorption field Gravel-less pipe On-site wastewater treatment systems Gravel-less pipe Bruce Lesikar and Russell Persyn Extension Agricultural Engineering Specialist, Extension Assistant-Water Conservation The Texas A&M University System L-5343 1-00 Figure... are surrounded by geotextile fabric instead of gravel. A gravel-less pipe system includes: 3 A treatment device, generally a septic tank, but it can be an advanced treatment system. 3 Gravel-less pipe, which is made of corrugated, perforated polyeth- ylene...

  16. Modeling On-Site Utility Systems Using "APLUS" 

    E-Print Network [OSTI]

    Ranade, S. M.; Jones, D. H.; Shrec, S. C.

    1988-01-01

    stream_source_info ESL-IE-88-09-06.pdf.txt stream_content_type text/plain stream_size 20190 Content-Encoding ISO-8859-1 stream_name ESL-IE-88-09-06.pdf.txt Content-Type text/plain; charset=ISO-8859-1 MODELING ON-SITE... UTILITY SYSTEMS USING "APLUS" S. M. RANADE D. H. JONES S. C. SHREC Res. & Tech.Coord. Consultant Engineer ConsultantEngineer ICI-TENSA Services, Houston, Texas ABSTRACT Most energy saving schemes on industrial sites lead to reductions in the steam...

  17. Introduction On-site power generation is rising. Currently 35% of total

    E-Print Network [OSTI]

    with a gas turbine creating a combined cycle power plant. It has expected electrical efficiency of greater than 70 percent with low CO2 and NOx and virtually zero SOx. The expected power levels range from 250-kIntroduction On-site power generation is rising. Currently 35% of total US industrial electric

  18. On-Site Wastewater Treatment Systems: Mound System 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2002-04-22

    A mound system is a soil absorption system placed above the natural surface of the ground. The system distributes treated wastewater into the soil. This publication discusses the design and maintenance of mound systems....

  19. On-Site Wastewater Treatment Systems: Alternative Collection Systems 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2000-08-30

    Rural Texas communities have new options for wastewater management infrastructure that are cost effective but still protect human health and environmental quality. Such communities now can combine different kinds of systems in a new approach called...

  20. Idaho On-Site Wastewater Systems Webpage | 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:HydrothermallyIFB Agro|How toProof ofOn-Site

  1. The implications of carbon taxation on microgrid adoption of small-scale on-site power generation using a multi-criteria approach

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; de Almeida, Anibal T.; Marnay, Chris; Rubio, F. Javier

    2002-01-01

    Small-Scale On-Site Power Generation Using a Multi-Criteriatechnologies will tilt power generation economics in favorquality. This pattern of power generation and consumption is

  2. On-Site Wastewater Treatment Systems: Subsurface Drip Distribution 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    1999-09-06

    A subsurface drip system distributes wastewater to the lawn through a system of tubing installed below the ground. This publication explains the advantages and disadvantages of subsurface drip distribution systems, as well ...

  3. On-Site Wastewater Treatment Systems: Subsurface Drip Distribution (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    1999-08-12

    A subsurface drip system distributes wastewater to the lawn through a system of tubing installed below the ground surface. This publication explains the advantages, disadvantages, maintenance steps and estimated costs of ...

  4. On-Site Wastewater Treatment Systems: Spray Distribution 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    1999-09-06

    A spray distribution system is very similar to a lawn irrigation system. Spray heads are used to distribute treated wastewater to the surface of the yard. This publication explains the advantages and disadvantages of spray ...

  5. Commissioning & Optimization of On-Site Renewable Energy Systems 

    E-Print Network [OSTI]

    Gardner, J.C.

    2011-01-01

    Today, many electrical contractors and photovoltaic (PV) integrators engineer and install custom systems on a variety of existing and new construction. These systems are designed specifically to the building configurations and to required utility...

  6. On-Site Wastewater Treatment Systems: Leaching Chambers 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2000-02-04

    Leaching chambers distribute treated wastewater into the soil. This publication lists the advantages and disadvantages of leaching chamber systems, explains how to maintain them and gives estimates of costs....

  7. Portable Analytical Systems for On-Site Diagnosis of Exposure to Pesticides and Nerve Agents

    SciTech Connect (OSTI)

    Lin, Yuehe; Wang, Jun; Liu, Guodong; Timchalk, Chuck

    2009-12-01

    In this chapter, we summarize recent work in our laboratory on the development of sensitive portable analytical systems for use in on-site detection of exposure to organophosphate (OP) pesticides and chemical nerve agents. These systems are based on various nanomaterials functioning as transducers; recognition agents or labels and various elelectrochemical/immunoassay techniques. The studied nanomaterials included functionalized carbon nanotubes (CNT), zirconia nanoparticles (NPs) and quantum dots (QDs). Three biomarkers e.g. the free OPs, metabolites of OPs and protein-OP adducts in biological matrices have been employed for biomonitoring of OP exposure with our developed system. It has been found that the nanomaterial-based portable analytical systems have high sensitivity for the detection of the biomarkers, which suggest that these technologies offer great promise for the rapid and on-site detection and evaluation of OP exposure.

  8. Optimal selection of on-site generation with combined heat and power applications

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; Marnay, Chris; Bailey, Owen; Hamachi LaCommare, Kristina

    2004-01-01

    Modeling with Combined Heat and Power Applications. LBNL-Tax on Microgrid Combined Heat and Power Adoption. JournalGeneration with Combined Heat and Power Applications Afzal

  9. On-Site Decontamination System for Liquid Low Level Radioactive Waste - 13010

    SciTech Connect (OSTI)

    OSMANLIOGLU, Ahmet Erdal [Cekmece Nuclear Research and Training Center, Kucukcekmece Istanbul (Turkey)] [Cekmece Nuclear Research and Training Center, Kucukcekmece Istanbul (Turkey)

    2013-07-01

    This study is based on an evaluation of purification methods for liquid low-level radioactive waste (LLLW) by using natural zeolite. Generally the volume of liquid low-level waste is relatively large and the specific activity is rather low when compared to other radioactive waste types. In this study, a pilot scale column was used with natural zeolite as an ion exchanger media. Decontamination and minimization of LLLW especially at the generation site decrease operational cost in waste management operations. Portable pilot scale column was constructed for decontamination of LLW on site. Effect of temperature on the radionuclide adsorption of the zeolite was determined to optimize the waste solution temperature for the plant scale operations. In addition, effect of pH on the radionuclide uptake of the zeolite column was determined to optimize the waste solution pH for the plant scale operations. The advantages of this method used for the processing of LLLW are discussed in this paper. (authors)

  10. Steam generator support system

    DOE Patents [OSTI]

    Moldenhauer, James E. (Simi Valley, CA)

    1987-01-01

    A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances.

  11. Steam generator support system

    DOE Patents [OSTI]

    Moldenhauer, J.E.

    1987-08-25

    A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source is disclosed. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances. 4 figs.

  12. On-Site Wastewater Treatment Systems: Low-Pressure Dosing System (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    1999-08-12

    A low-pressure dosing system treats wastewater and then pumps it into the soil several times daily. This publication explains the advantages, disadvantages, maintenance steps and estimated costs of low-pressure dosing systems.

  13. On-Site Wastewater Treatment Systems: Low-Pressure Dosing System 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    1999-09-06

    A low-pressure dosing system treats wastewater and then pumps it into the soil several times daily. This publication explains the advantages and disadvantages of low-pressure dosing systems as well as estimated costs and ...

  14. A Parallelized Hash Generator System

    E-Print Network [OSTI]

    EDA385 A Parallelized Hash Generator System Niklas Ald´en ael10nal@student.lu.se Gabriel J cracker uses the MD5 hash function to generate a hash from a random generated character sequence

  15. On-Site Wastewater Treatment Systems: Conventional Septic Tank/Drain Field (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    1999-08-12

    Conventional septic tanks have been the most commonly used technology for treating wastewater. This publication explains the advantages, disadvantages, maintenance steps and estimated costs of septic tank/drain field systems.

  16. On-Site Wastewater Treatment Systems: Conventional Septic Tank/Drain Field 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    1999-09-06

    Conventional septic systems have traditionally been the most commonly used technology for treating wastewater. This publication explains the advantages and disadvantages of conventional septic tank/drain fields, as well ...

  17. Innovative On-site Integrated Energy System Tested World Renewable Energy Congress VIII

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Donnell developed, installed and is testing one of the largest systems in the nation to use a new technology,500 tons of chilled water. By design, the full waste heat output of the natural gas-powered 4.5-MW Solar turbine closely matches the chiller capacity. Operation, which began in June 2004, should verify fuel

  18. MHD Generating system

    DOE Patents [OSTI]

    Petrick, Michael (Joliet, IL); Pierson, Edward S. (Chicago, IL); Schreiner, Felix (Mokena, IL)

    1980-01-01

    According to the present invention, coal combustion gas is the primary working fluid and copper or a copper alloy is the electrodynamic fluid in the MHD generator, thereby eliminating the heat exchangers between the combustor and the liquid-metal MHD working fluids, allowing the use of a conventional coalfired steam bottoming plant, and making the plant simpler, more efficient and cheaper. In operation, the gas and liquid are combined in a mixer and the resulting two-phase mixture enters the MHD generator. The MHD generator acts as a turbine and electric generator in one unit wherein the gas expands, drives the liquid across the magnetic field and thus generates electrical power. The gas and liquid are separated, and the available energy in the gas is recovered before the gas is exhausted to the atmosphere. Where the combustion gas contains sulfur, oxygen is bubbled through a side loop to remove sulfur therefrom as a concentrated stream of sulfur dioxide. The combustor is operated substoichiometrically to control the oxide level in the copper.

  19. Next generation CAT system

    E-Print Network [OSTI]

    Kim, Jaewon, S.M. Massachusetts Institute of Technology

    2010-01-01

    Two novel techniques for future CAT system are presented. Transmission descattering is a singleshot method to differentiate unscattered and scattered components of light transmission through a scattering material. ...

  20. Hydrogen storage and generation system

    DOE Patents [OSTI]

    Dentinger, Paul M. (Sunol, CA); Crowell, Jeffrey A. W. (Castro Valley, CA)

    2010-08-24

    A system for storing and generating hydrogen generally and, in particular, a system for storing and generating hydrogen for use in an H.sub.2/O.sub.2 fuel cell. The hydrogen storage system uses the beta particles from a beta particle emitting material to degrade an organic polymer material to release substantially pure hydrogen. In a preferred embodiment of the invention, beta particles from .sup.63Ni are used to release hydrogen from linear polyethylene.

  1. Thermoelectric Power Generation System with Loop Thermosyphon...

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

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

  2. Generation IV Nuclear Energy Systems ...

    E-Print Network [OSTI]

    Kemner, Ken

    Generation IV Nuclear Energy Systems ... The U.S. Department of Energy's Office of Nuclear Energy enhance safety and security, and develop nuclear power as an energy source for industrial applications Information ... U.S. Department of Energy www.energy.gov DOE Office of Nuclear Energy www.nuclear

  3. Next Generation Environmentally Friendly Driving Feedback Systems...

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

    Environmentally Friendly Driving Feedback Systems Research and Development Next Generation Environmentally Friendly Driving Feedback Systems Research and Development 2012 DOE...

  4. On-Site Renewable Power Purchase Agreements for Renewable Energy Projects

    Broader source: Energy.gov [DOE]

    An on-site renewable power purchase agreement (PPA) enables Federal agencies to fund a renewable energy project by contracting to purchase the power generated by the system. The renewable energy equipment is installed and owned by a developer but located on-site at the agency facility.

  5. Generators for Small Electrical and Thermal Systems

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

    build and test improved electric-power generators for use in residential Combined Heat and Power (CHP) systems, which capture the generator's heat output for space and water...

  6. NEXT GENERATION TURBINE SYSTEM STUDY

    SciTech Connect (OSTI)

    Frank Macri

    2002-02-28

    Rolls-Royce has completed a preliminary design and marketing study under a Department of Energy (DOE) cost shared contract (DE-AC26-00NT40852) to analyze the feasibility of developing a clean, high efficiency, and flexible Next Generation Turbine (NGT) system to meet the power generation market needs of the year 2007 and beyond. Rolls-Royce evaluated the full range of its most advanced commercial aerospace and aeroderivative engines alongside the special technologies necessary to achieve the aggressive efficiency, performance, emissions, economic, and flexibility targets desired by the DOE. Heavy emphasis was placed on evaluating the technical risks and the economic viability of various concept and technology options available. This was necessary to ensure the resulting advanced NGT system would provide extensive public benefits and significant customer benefits without introducing unacceptable levels of technical and operational risk that would impair the market acceptance of the resulting product. Two advanced cycle configurations were identified as offering significant advantages over current combined cycle products available in the market. In addition, balance of plant (BOP) technologies, as well as capabilities to improve the reliability, availability, and maintainability (RAM) of industrial gas turbine engines, have been identified. A customer focused survey and economic analysis of a proposed Rolls-Royce NGT product configuration was also accomplished as a part of this research study. The proposed Rolls-Royce NGT solution could offer customers clean, flexible power generation systems with very high efficiencies, similar to combined cycle plants, but at a much lower specific cost, similar to those of simple cycle plants.

  7. Heat engine generator control system

    DOE Patents [OSTI]

    Rajashekara, Kaushik (Carmel, IN); Gorti, Bhanuprasad Venkata (Towson, MD); McMullen, Steven Robert (Anderson, IN); Raibert, Robert Joseph (Fishers, IN)

    1998-01-01

    An electrical power generation system includes a heat engine having an output member operatively coupled to the rotor of a dynamoelectric machine. System output power is controlled by varying an electrical parameter of the dynamoelectric machine. A power request signal is related to an engine speed and the electrical parameter is varied in accordance with a speed control loop. Initially, the sense of change in the electrical parameter in response to a change in the power request signal is opposite that required to effectuate a steady state output power consistent with the power request signal. Thereafter, the electrical parameter is varied to converge the output member speed to the speed known to be associated with the desired electrical output power.

  8. Heat engine generator control system

    DOE Patents [OSTI]

    Rajashekara, K.; Gorti, B.V.; McMullen, S.R.; Raibert, R.J.

    1998-05-12

    An electrical power generation system includes a heat engine having an output member operatively coupled to the rotor of a dynamoelectric machine. System output power is controlled by varying an electrical parameter of the dynamoelectric machine. A power request signal is related to an engine speed and the electrical parameter is varied in accordance with a speed control loop. Initially, the sense of change in the electrical parameter in response to a change in the power request signal is opposite that required to effectuate a steady state output power consistent with the power request signal. Thereafter, the electrical parameter is varied to converge the output member speed to the speed known to be associated with the desired electrical output power. 8 figs.

  9. Technetium-99m generator system

    DOE Patents [OSTI]

    Mirzadeh, S.; Knapp, F.F. Jr.; Collins, E.D.

    1998-06-30

    A {sup 99}Mo/{sup 99m}Tc generator system includes a sorbent column loaded with a composition containing {sup 99}Mo. The sorbent column has an effluent end in fluid communication with an anion-exchange column for concentrating {sup 99m}Tc eluted from the sorbent column. A method of preparing a concentrated solution of {sup 99m}Tc includes the general steps of: (a) providing a sorbent column loaded with a composition containing {sup 99}Mo, the sorbent column having an effluent end in fluid communication with an anion-exchange column; (b) eluting the sorbent column with a salt solution to elute {sup 99m}Tc from the sorbent and to trap and concentrate the eluted {sup 99m}Tc on the ion-exchange column; and (c) eluting the concentrated {sup 99m}Tc from the ion-exchange column with a solution comprising a reductive complexing agent. 1 fig.

  10. The Next Generation Energy Management System Design

    E-Print Network [OSTI]

    Paul Myrda, EPRI Naim Logic SRP George Stefopoulos, NYPA Michael Swider, New York ISO. i #12;iiThe Next Generation Energy Management System Design Final Project Report Power Systems Engineering Research Center Empowering Minds to Engineer the Future Electric Energy System #12;#12;The Next Generation

  11. Rapid Deployment Drilling System for on-site inspections under a Comprehensive Test Ban Preliminary Engineering Design

    SciTech Connect (OSTI)

    Maurer, W.C.; Deskins, W.G.; McDonald, W.J.; Cohen, J.H. [Maurer Engineering, Inc., Houston, TX (United States); Heuze, F.E.; Butler, M.W. [Lawrence Livermore National Lab., CA (United States)

    1996-09-01

    While not a new drilling technology, coiled-tubing (CT) drilling continues to undergo rapid development and expansion, with new equipment, tools and procedures developed almost daily. This project was undertaken to: analyze available technological options for a Rapid Deployment Drilling System (RDDS) CT drilling system: recommend specific technologies that best match the requirements for the RDDS; and highlight any areas where adequate technological solutions are not currently available. Postshot drilling is a well established technique at the Nevada Test Site (NTS). Drilling provides essential data on the results of underground tests including obtaining samples for the shot zone, information on cavity size, chimney dimensions, effects of the event on surrounding material, and distribution of radioactivity.

  12. Fuel cell using a hydrogen generation system

    DOE Patents [OSTI]

    Dentinger, Paul M. (Sunol, CA); Crowell, Jeffrey A. W. (Castro Valley, CA)

    2010-10-19

    A system is described for storing and generating hydrogen and, in particular, a system for storing and generating hydrogen for use in an H.sub.2/O.sub.2 fuel cell. The hydrogen storage system uses beta particles from a beta particle emitting material to degrade an organic polymer material to release substantially pure hydrogen. In a preferred embodiment of the invention, beta particles from .sup.63Ni are used to release hydrogen from linear polyethylene.

  13. Control system for fluid heated steam generator

    DOE Patents [OSTI]

    Boland, J.F.; Koenig, J.F.

    1984-05-29

    A control system for controlling the location of the nucleate-boiling region in a fluid heated steam generator comprises means for measuring the temperature gradient (change in temperature per unit length) of the heating fluid along the steam generator; means for determining a control variable in accordance with a predetermined function of temperature gradients and for generating a control signal in response thereto; and means for adjusting the feedwater flow rate in accordance with the control signal.

  14. Control system for fluid heated steam generator

    DOE Patents [OSTI]

    Boland, James F. (Bonneville County, ID); Koenig, John F. (Idaho Falls, ID)

    1985-01-01

    A control system for controlling the location of the nucleate-boiling region in a fluid heated steam generator comprises means for measuring the temperature gradient (change in temperature per unit length) of the heating fluid along the steam generator; means for determining a control variable in accordance with a predetermined function of temperature gradients and for generating a control signal in response thereto; and means for adjusting the feedwater flow rate in accordance with the control signal.

  15. Microchannel Reactor System Design & Demonstration For On-Site H2O2 Production by Controlled H2/O2 Reaction

    SciTech Connect (OSTI)

    Adeniyi Lawal

    2008-12-09

    We successfully demonstrated an innovative hydrogen peroxide (H2O2) production concept which involved the development of flame- and explosion-resistant microchannel reactor system for energy efficient, cost-saving, on-site H2O2 production. We designed, fabricated, evaluated, and optimized a laboratory-scale microchannel reactor system for controlled direct combination of H2 and O2 in all proportions including explosive regime, at a low pressure and a low temperature to produce about 1.5 wt% H2O2 as proposed. In the second phase of the program, as a prelude to full-scale commercialization, we demonstrated our H2O2 production approach by ‘numbering up’ the channels in a multi-channel microreactor-based pilot plant to produce 1 kg/h of H2O2 at 1.5 wt% as demanded by end-users of the developed technology. To our knowledge, we are the first group to accomplish this significant milestone. We identified the reaction pathways that comprise the process, and implemented rigorous mechanistic kinetic studies to obtain the kinetics of the three main dominant reactions. We are not aware of any such comprehensive kinetic studies for the direct combination process, either in a microreactor or any other reactor system. We showed that the mass transfer parameter in our microreactor system is several orders of magnitude higher than what obtains in the macroreactor, attesting to the superior performance of microreactor. A one-dimensional reactor model incorporating the kinetics information enabled us to clarify certain important aspects of the chemistry of the direct combination process as detailed in section 5 of this report. Also, through mathematical modeling and simulation using sophisticated and robust commercial software packages, we were able to elucidate the hydrodynamics of the complex multiphase flows that take place in the microchannel. In conjunction with the kinetics information, we were able to validate the experimental data. If fully implemented across the whole industry as a result of our technology demonstration, our production concept is expected to save >5 trillion Btu/year of steam usage and >3 trillion Btu/year in electric power consumption. Our analysis also indicates >50 % reduction in waste disposal cost and ~10% reduction in feedstock energy. These savings translate to ~30% reduction in overall production and transportation costs for the $1B annual H2O2 market.

  16. Demonstration of Next Generation PEM CHP Systems for Global Markets...

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

    Demonstration of Next Generation PEM CHP Systems for Global Markets Using PBI Membrane Technology Demonstration of Next Generation PEM CHP Systems for Global Markets Using PBI...

  17. Particulate Generation in a Tritium System | Department of Energy

    Office of Environmental Management (EM)

    Particulate Generation in a Tritium System Particulate Generation in a Tritium System Presentation from the 33rd Tritium Focus Group Meeting held in Aiken, South Carolina on April...

  18. INTEGRATED CONTROL OF NEXT GENERATION POWER SYSTEM

    SciTech Connect (OSTI)

    2010-02-28

    Control methodologies provide the necessary data acquisition, analysis and corrective actions needed to maintain the state of an electric power system within acceptable operating limits. These methods are primarily software-based algorithms that are nonfunctional unless properly integrated with system data and the appropriate control devices. Components of the control of power systems today include protective relays, supervisory control and data acquisition (SCADA), distribution automation (DA), feeder automation, software agents, sensors, control devices and communications. Necessary corrective actions are still accomplished using large electromechanical devices such as vacuum, oil and gas-insulated breakers, capacitor banks, regulators, transformer tap changers, reclosers, generators, and more recently FACTS (flexible AC transmission system) devices. The recent evolution of multi-agent system (MAS) technologies has been reviewed and effort made to integrate MAS into next generation power systems. A MAS can be defined as ��a loosely-coupled network of problem solvers that work together to solve problems that are beyond their individual capabilities��. These problem solvers, often called agents, are autonomous and may be heterogeneous in nature. This project has shown that a MAS has significant advantages over a single, monolithic, centralized problem solver for next generation power systems. Various communication media are being used in the electric power system today, including copper, optical fiber and power line carrier (PLC) as well as wireless technologies. These technologies have enabled the deployment of substation automation (SA) at many facilities. Recently, carrier and wireless technologies have been developed and demonstrated on a pilot basis. Hence, efforts have been made by this project to penetrate these communication technologies as an infrastructure for next generation power systems. This project has thus pursued efforts to use specific MAS methods as well as pertinent communications protocols to imbed and assess such technologies in a real electric power distribution system, specifically the Circuit of the Future (CoF) developed by Southern California Edison (SCE). By modeling the behavior and communication for the components of a MAS, the operation and control of the power distribution circuit have been enhanced. The use of MAS to model and integrate a power distribution circuit offers a significantly different approach to the design of next generation power systems. For example, ways to control a power distribution circuit that includes a micro-grid while considering the impacts of thermal constraints, and integrating voltage control and renewable energy sources on the main power system have been pursued. Both computer simulations and laboratory testbeds have been used to demonstrate such technologies in electric power distribution systems. An economic assessment of MAS in electric power systems was also performed during this project. A report on the economic feasibility of MAS for electric power systems was prepared, and particularly discusses the feasibility of incorporating MAS in transmission and distribution (T&D) systems. Also, the commercial viability of deploying MAS in T&D systems has been assessed by developing an initial case study using utility input to estimate the benefits of deploying MAS. In summary, the MAS approach, which had previously been investigated with good success by APERC for naval shipboard applications, has now been applied with promising results for enhancing an electric power distribution circuit, such as the Circuit of the Future developed by Southern California Edison. The results for next generation power systems include better ability to reconfigure circuits, improve protection and enhance reliability.

  19. Protective, Modular Wave Power Generation System

    SciTech Connect (OSTI)

    Vvedensky, Jane M.; Park, Robert Y.

    2012-11-27

    The concept of small wave energy conversion modules that can be built into large, scalable arrays, in the same vein as solar panels, has been developed. This innovation lends itself to an organic business and development model, and enables the use of large-run manufacturing technology to reduce system costs. The first prototype module has been built to full-scale, and tested in a laboratory wave channel. The device has been shown to generate electricity and dissipate wave energy. Improvements need to be made to the electrical generator and a demonstration of an array of modules should be made in natural conditions.

  20. Plasma generators, reactor systems and related methods

    DOE Patents [OSTI]

    Kong, Peter C. (Idaho Falls, ID); Pink, Robert J. (Pocatello, ID); Lee, James E. (Idaho Falls, ID)

    2007-06-19

    A plasma generator, reactor and associated systems and methods are provided in accordance with the present invention. A plasma reactor may include multiple sections or modules which are removably coupled together to form a chamber. Associated with each section is an electrode set including three electrodes with each electrode being coupled to a single phase of a three-phase alternating current (AC) power supply. The electrodes are disposed about a longitudinal centerline of the chamber and are arranged to provide and extended arc and generate an extended body of plasma. The electrodes are displaceable relative to the longitudinal centerline of the chamber. A control system may be utilized so as to automatically displace the electrodes and define an electrode gap responsive to measure voltage or current levels of the associated power supply.

  1. Implementation of optimum solar electricity generating system

    SciTech Connect (OSTI)

    Singh, Balbir Singh Mahinder Karim, Samsul Ariffin A.; Sivapalan, Subarna; Najib, Nurul Syafiqah Mohd; Menon, Pradeep

    2014-10-24

    Under the 10{sup th} Malaysian Plan, the government is expecting the renewable energy to contribute approximately 5.5% to the total electricity generation by the year 2015, which amounts to 98MW. One of the initiatives to ensure that the target is achievable was to establish the Sustainable Energy Development Authority of Malaysia. SEDA is given the authority to administer and manage the implementation of the feed-in tariff (FiT) mechanism which is mandated under the Renewable Energy Act 2011. The move to establish SEDA is commendable and the FiT seems to be attractive but there is a need to create awareness on the implementation of the solar electricity generating system (SEGS). In Malaysia, harnessing technologies related to solar energy resources have great potential for implementation. However, the main issue that plagues the implementation of SEGS is the intermittent nature of this source of energy. The availability of sunlight is during the day time, and there is a need for electrical energy storage system, so that there is electricity available during the night time as well. The meteorological condition such as clouds, haze and pollution affects the SEGS as well. The PV based SEGS is seems to be promising electricity generating system that can contribute towards achieving the 5.5% target and will be able to minimize the negative effects of utilizing fossil fuels for electricity generation on the environment. Malaysia is committed to Kyoto Protocol, which emphasizes on fighting global warming by achieving stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system. In this paper, the technical aspects of the implementation of optimum SEGS is discussed, especially pertaining to the positioning of the PV panels.

  2. Development, Demonstration, and Field Testing of Enterprise-Wide Distributed Generation Energy Management System: Final Report

    SciTech Connect (OSTI)

    Greenberg, S.; Cooley, C.

    2005-01-01

    This report details progress on subcontract NAD-1-30605-1 between the National Renewable Energy Laboratory and RealEnergy (RE), the purpose of which is to describe RE's approach to the challenges it faces in the implementation of a nationwide fleet of clean cogeneration systems to serve contemporary energy markets. The Phase 2 report covers: utility tariff risk and its impact on market development; the effect on incentives on distributed energy markets; the regulatory effectiveness of interconnection in California; a survey of practical field interconnection issues; trend analysis for on-site generation; performance of dispatch systems; and information design hierarchy for combined heat and power.

  3. 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

  4. Digital signal generation for wireless communication systems

    E-Print Network [OSTI]

    Rode, Jeremy

    2010-01-01

    MHz would require a synchronous PWM generator to be clockedof signal generators have a synchronous output, time-

  5. Next Generation Library Systems Convenient, Connected, User-Centric, Ubiquitous

    E-Print Network [OSTI]

    Myers, Lawrence C.

    & Engineering Library; Digital Library Technologies Group 5 Barb Sagraves, Head Next Generation Library Systems Convenient, Connected, User-Centric, Ubiquitous Next Generation Library Taskforce

  6. System level modeling of thermoelectric generators for automotive...

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

    level modeling of thermoelectric generators for automotive applications System level modeling of thermoelectric generators for automotive applications Uses a model to predict and...

  7. Low Cost High Concentration PV Systems for Utility Power Generation...

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

    Residential and Utility Solar Power Generating Systems SunPower,Low Cost Thin Film Building-Integrated PV Systems Low Cost High Concentration PV Systems for Utility Power...

  8. Stochastic Language Generation in a Dialogue System: Toward a Domain Independent Generator

    E-Print Network [OSTI]

    Stochastic Language Generation in a Dialogue System: Toward a Domain Independent Generator Pensacola, FL 32502 {nchambers,jallen}@ihmc.us Abstract Until recently, surface generation in dialogue systems has served the purpose of simply pro- viding a backend to other areas of research. The generation

  9. Method and system for radioisotope generation

    SciTech Connect (OSTI)

    Toth, James J.; Soderquist, Chuck Z.; Greenwood, Lawrence R.; Mattigod, Shas V.; Fryxell, Glen E.; O'Hara, Matthew J.

    2014-07-15

    A system and a process for producing selected isotopic daughter products from parent materials characterized by the steps of loading the parent material upon a sorbent having a functional group configured to selectively bind the parent material under designated conditions, generating the selected isotopic daughter products, and eluting said selected isotopic daughter products from the sorbent. In one embodiment, the process also includes the step of passing an eluent formed by the elution step through a second sorbent material that is configured to remove a preselected material from said eluent. In some applications a passage of the material through a third sorbent material after passage through the second sorbent material is also performed.

  10. Sandia Energy - Grid System Planning for Wind: Wind Generator...

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

    Grid System Planning for Wind: Wind Generator Modeling Home Stationary Power Energy Conversion Efficiency Wind Energy Siting and Barrier Mitigation Grid System Planning for Wind:...

  11. Comparative health and safety assessment of alternative future electrical-generation systems

    SciTech Connect (OSTI)

    Habegger, L.J.; Gasper, J.R.; Brown, C.D.

    1980-01-01

    The report is an analysis of health and safety risks of seven alternative electrical generation systems, all of which have potential for commercial availability in the post-2000 timeframe. The systems are compared on the basis of expected public and occupational deaths and lost workdays per year associated with 1000 MWe average unit generation. Risks and their uncertainties are estimated for all phases of the energy production cycle, including fuel and raw material extraction and processing, direct and indirect component manufacture, on-site construction, and system operation and maintenance. Also discussed is the potential significance of related major health and safety issues that remain largely unquantifiable. The technologies include: the SPS; a low-Btu coal gasification system with an open-cycle gas turbine combined with a steam topping cycle (CG/CC); a light water fission reactor system without fuel reprocessing (LWR); a liquid metal fast breeder fission reactor system (LMFBR); a central station terrestrial photovoltaic system (CTPV); and a first generation fusion system with magnetic confinement. For comparison with the baseload technologies, risk from a decentralized roof-top photovoltaic system with 6 kWe peak capacity and battery storage (DTPV) was also evaluated.

  12. Assessor Training Evaluating OnSite Reports

    E-Print Network [OSTI]

    NVLAP Assessor Training Evaluating OnSite Reports and Corrective Actions #12;Assessor Training 2009Site Report form ·NVLAP OnSite Assessment Review form #12;Assessor Training 2009: Evaluating OnSite Reports · Nonconformities cited #12;Assessor Training 2009: Evaluating OnSite Reports & Corrective Actions 44 Evaluating

  13. Electron beam dynamics for the ISIS bremsstrahlung beam generation system

    E-Print Network [OSTI]

    Block, Robert E. (Robert Edward)

    2011-01-01

    An electron beam transport system was designed for use in the Bremsstrahlung Beam Generation System of the Integrated Stand-off Inspection System (ISIS). The purpose of this electron transport system was to provide for ...

  14. Project Recap Humanitarian Engineering Biodiesel Boiler System for Steam Generator

    E-Print Network [OSTI]

    Demirel, Melik C.

    Project Recap Humanitarian Engineering ­ Biodiesel Boiler System for Steam Generator Currently 70 biodiesel boiler system to drive a steam engine generator. This system is to provide electricity the customer needs, a boiler fueled by biodiesel and outputting to a steam engine was decided upon. The system

  15. GENERATING CLIMBING PLANTS USING L-SYSTEMS Johan Knutzen1

    E-Print Network [OSTI]

    Assarsson, Ulf

    GENERATING CLIMBING PLANTS USING L-SYSTEMS Johan Knutzen1 , Suguru Saito2 , Masayuki Nakajima3.cs.titech.ac.jp ABSTRACT We propose a novel method of procedurally generating climb- ing plants using L-systems. The goal and heliotropism, as well pseudo- tropisms. The structure of the generated climbing plants is discretized

  16. GENERATION OF THESAURUS IN DIFFERENT LANGUAGES A COMPUTER BASED SYSTEM

    E-Print Network [OSTI]

    GENERATION OF THESAURUS IN DIFFERENT LANGUAGES A COMPUTER BASED SYSTEM F J DEVADASON Documentation and Bhattacharyya's POPSI. A computer based system, for generating an information retrieval thesaurus, from as an alphabetical thesaurus. Also, once a thesaurus is generated in one language it is possi- ble to produce

  17. Current Generated Harmonics and Their Effect Upon Electrical Industrial Systems 

    E-Print Network [OSTI]

    Alexander, H. R.; Rogge, D. S.

    1995-01-01

    This paper provides a general overview of harmonics and addresses the causes of current generated harmonics in electrical systems. In addition, problems caused by current generated harmonics and their affects upon different ...

  18. A DATABASE INTEGRATION SYSTEM BASED ON GLOBAL VIEW GENERATION

    E-Print Network [OSTI]

    Lawrence, Ramon

    A DATABASE INTEGRATION SYSTEM BASED ON GLOBAL VIEW GENERATION Uchang Park Duksung Women: database, integration, view, heterogeneity. Abstract: Database integration is a common and growing challenge with the proliferation of database systems, data warehouses, data marts, and other OLAP systems

  19. Guidance on site selection for

    E-Print Network [OSTI]

    harvestingbrash materialfollowingtimber harvestingto supply biomass for heat and power generation. A number 4 Soil fertility 5 Acidification 7 Combined Hazard Assessment 8 OTHER ISSUES 8 INCREASING

  20. Thermoelectric generator cooling system and method of control

    DOE Patents [OSTI]

    Prior, Gregory P; Meisner, Gregory P; Glassford, Daniel B

    2012-10-16

    An apparatus is provided that includes a thermoelectric generator and an exhaust gas system operatively connected to the thermoelectric generator to heat a portion of the thermoelectric generator with exhaust gas flow through the thermoelectric generator. A coolant system is operatively connected to the thermoelectric generator to cool another portion of the thermoelectric generator with coolant flow through the thermoelectric generator. At least one valve is controllable to cause the coolant flow through the thermoelectric generator in a direction that opposes a direction of the exhaust gas flow under a first set of operating conditions and to cause the coolant flow through the thermoelectric generator in the direction of exhaust gas flow under a second set of operating conditions.

  1. Next-generation information systems for genomics 

    E-Print Network [OSTI]

    Mungall, Christopher

    2011-06-27

    The advent of next-generation sequencing technologies is transforming biology by enabling individual researchers to sequence the genomes of individual organisms or cells on a massive scale. In order to realize the ...

  2. Distributed Generation Study/Patterson Farms CHP System Using...

    Open Energy Info (EERE)

    Patterson Farms CHP System Using Renewable Biogas < Distributed Generation Study Jump to: navigation, search Study Location Auburn, New York Site Description Agricultural Study...

  3. Electric Power Generation Systems | netl.doe.gov

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

    Electric Power Generation Systems Coal gasification-based power plants Coal combustion-based power plants Natural gas-fueled power plants Turbines Fuel cells Existing power plants...

  4. Plasma generators, reactor systems and related methods - Energy...

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

    Visit the Technology Transfer and Commercialization Office Website Abstract: A plasma generator, reactor and associated systems and methods are provided in accordance with the...

  5. Synchronization System for Next Generation Light Sources

    SciTech Connect (OSTI)

    Zavriyev, Anton

    2014-03-27

    An alternative synchronization technique – one that would allow explicit control of the pulse train including its repetition rate and delay is clearly desired. We propose such a scheme. Our method is based on optical interferometry and permits synchronization of the pulse trains generated by two independent mode-locked lasers. As the next generation x-ray sources will be driven by a clock signal derived from a mode-locked optical source, our technique will provide a way to synchronize x-ray probe with the optical pump pulses.

  6. Bond graph models of electromechanical systems. The AC generator case

    E-Print Network [OSTI]

    Batlle, Carles

    Bond graph models of electromechanical systems. The AC generator case Carles Batlle Department. After reviewing electromechanical energy conversion and torque gener- ation, the core element present in any electromechanical system is introduced, and the corresponding electrical and mechanical ports

  7. Design and implementation of a prototype generator monitoring system 

    E-Print Network [OSTI]

    Sun, Jianyong

    1996-01-01

    This thesis describes an implementation framework for an intelligent generator monitoring system. This solution is based on high performance front-end data acquisition system and real-time processing of electrical signals and contacts from related...

  8. Nonlinear Electrical Simulation of High-Power Synchronous Generator System

    E-Print Network [OSTI]

    Wu, Thomas

    power density, the generator operates in nonlinear region of the magnetic circuit. Magnetic Finite for motor simulation [I]. Fardoun simulated permanent-magnet machine drive system using SPlCE [2]. NatarajanNonlinear Electrical Simulation of High-Power Synchronous Generator System Jie Chen and Thomas Wu

  9. An Integrated Safety Assessment Methodology for Generation IV Nuclear Systems

    SciTech Connect (OSTI)

    Timothy J. Leahy

    2010-06-01

    The Generation IV International Forum (GIF) Risk and Safety Working Group (RSWG) was created to develop an effective approach for the safety of Generation IV advanced nuclear energy systems. Early work of the RSWG focused on defining a safety philosophy founded on lessons learned from current and prior generations of nuclear technologies, and on identifying technology characteristics that may help achieve Generation IV safety goals. More recent RSWG work has focused on the definition of an integrated safety assessment methodology for evaluating the safety of Generation IV systems. The methodology, tentatively called ISAM, is an integrated “toolkit” consisting of analytical techniques that are available and matched to appropriate stages of Generation IV system concept development. The integrated methodology is intended to yield safety-related insights that help actively drive the evolving design throughout the technology development cycle, potentially resulting in enhanced safety, reduced costs, and shortened development time.

  10. The Next Generation ATLAS Production System

    E-Print Network [OSTI]

    Borodin, Mikhail; The ATLAS collaboration; Golubkov, Dmitry; Klimentov, Alexei; Maeno, Tadashi; Mashinistov, Ruslan; Vaniachine, Alexandre

    2015-01-01

    The ATLAS experiment at LHC data processing and simulation grows continuously, as more data and more use cases emerge. For data processing the ATLAS experiment adopted the data transformation approach, where software applications transform the input data into outputs. In the ATLAS production system, each data transformation is represented by a task, a collection of many jobs, dynamically submitted by the ATLAS workload management system (PanDA/JEDI) and executed on the Grid, clouds and supercomputers. Patterns in ATLAS data transformation workflows composed of many tasks provided a scalable production system framework for template definitions of the many-tasks workflows. User interface and system logic of these workflows are being implemented in the Database Engine for Tasks (DEFT). Such development required using modern computing technologies and approaches. We report technical details of this development: database implementation, server logic and Web user interface technologies.

  11. BUILDOUT AND UPGRADE OF CENTRAL EMERGENCY GENERATOR SYSTEM, GENERATOR 3 AND 4 ELECTRICAL INSTALLATION

    SciTech Connect (OSTI)

    Gary D. Seifert; G. Shawn West; Kurt S. Myers; Jim Moncur

    2006-07-01

    SECTION 01000—SUMMARY OF WORK PART 1—GENERAL 1.1 SUMMARY The work to be performed under this project consists of providing the labor, equipment, and materials to perform "Buildout and Upgrade of Central Emergency Generator System, Generator 3 and 4 Electrical Installation" for the National Aeronautics and Space Administration at the Dryden Flight Research Center (NASA/DFRC), Edwards, California 93523. All modifications to existing substations and electrical distribution systems are the responsibility of the contractor. It is the contractor’s responsibility to supply a complete and functionally operational system. The work shall be performed in accordance with these specifications and the related drawings. The work of this project is defined by the plans and specifications contained and referenced herein. This work specifically includes but is not limited to the following: Scope of Work - Installation 1. Install all electrical wiring and controls for new generators 3 and 4 to match existing electrical installation for generators 1 and 2 and in accordance with drawings. Contractor shall provide as-built details for electrical installation. 2. Install battery charger systems for new generators 3 and 4 to match existing battery charging equipment and installation for generators 1 and 2. This may require exchange of some battery charger parts already on-hand. Supply power to new battery chargers from panel and breakers as shown on drawings. Utilize existing conduits already routed to generators 3 and 4 to field route the new wiring in the most reasonable way possible. 3. Install electrical wiring for fuel/lube systems for new generators 3 and 4 to match existing installation for generators 1 and 2. Supply power to lube oil heaters and fuel system (day tanks) from panel and breakers as shown on drawings. Utilize existing conduits already routed to generators 3 and 4 to field route the new wiring in the most reasonable way possible. Add any conduits necessary to complete wiring to fuel systems. 4. Install power to new dampers/louvers from panel and breakers as shown on drawings. Wiring shall be similar to installation to existing dampers/louvers. Utilize existing conduits already routed to louver areas to field route the new wiring in the most reasonable way possible. Add any conduits necessary to complete wiring to new dampers/louvers. 5. Install power to jacket water heaters for new generators 3 and 4 from panel and breakers as shown on drawings. Utilize existing conduits already routed to generators 3 and 4 to field route the new wiring in the most reasonable way possible. 6. Install new neutral grounding resistor and associated parts and wiring for new generators 3 and 4 to match existing installation for generators 1 and 2. Grounding resistors will be Government Furnished Equipment (GFE). 7. Install two new switchgear sections, one for generator #3 and one for generator #4, to match existing generator #1 cubicle design and installation and in accordance with drawings and existing parts lists. This switchgear will be provided as GFE. 8. Ground all new switchgear, generators 3 and 4, and any other new equipment to match existing grounding connections for generators 1 and 2, switchgear and other equipment. See drawings for additional details. Grounding grid is already existing. Ensure that all grounding meets National Electrical Code requirements. 9. Cummins DMC control for the generator and switchgear syste

  12. Fault Current Issues for Market Driven Power Systems with Distributed Generation

    E-Print Network [OSTI]

    1 Fault Current Issues for Market Driven Power Systems with Distributed Generation Natthaphob of installing distributed generation (DG) to electric power systems. The proliferation of new generators creates Terms--Distributed / dispersed generation, power distri- bution, power system protection, fault

  13. Objects to the rescue! httpd: the next generation operating system

    E-Print Network [OSTI]

    Walpole, Jonathan

    Objects to the rescue! or httpd: the next generation operating system Andrew P. Black Jonathan suggest that object-oriented operating systems may provide the means to meet the ever-growing demands is in fact an operating system, we observe that it implements uniform naming, persistent objects

  14. Energy Storage System Sizing for Smoothing Power Generation , P. Bydlowski

    E-Print Network [OSTI]

    Boyer, Edmond

    Energy Storage System Sizing for Smoothing Power Generation of Direct J. Aubry1 , P. Bydlowski 1 E-mail: judicael.aubry Abstract This paper examines the sizing energy storage system (ESS) for energy converter. Keywords: Energy Storage System (ESS), power smoothing, Direct Wave Energy Converter, Supercapacitor, Power

  15. Remote Structural Health Monitoring Systems for Next Generation SCADA

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    Remote Structural Health Monitoring Systems for Next Generation SCADA Sehwan Kim1 Marco Torbol2 supervisory control and data acquisition (SCADA) system for civil infrastructure systems. To evaluate pipelines. The objectives of this article are to improve upon the existing SCADA by integrating the remote

  16. Remote Structural Health Monitoring Systems for Next Generation SCADA

    E-Print Network [OSTI]

    Chou, Pai H.

    Remote Structural Health Monitoring Systems for Next Generation SCADA Sehwan Kim1 Marco Torbol2, and to validate its effectiveness with long-term field deployment results. Keywords: structural health monitoring, SCADA system, remote monitoring system 1. INTRODUCTION Structural health monitoring (SHM) is the use

  17. Generating and Managing Metadata for Web-Based Information Systems

    E-Print Network [OSTI]

    van Harmelen, Frank

    Generating and Managing Metadata for Web-Based Information Systems Heiner Stuckenschmidt and Frank, aggregate and visualize the metadata of an existing information system. We conclude that the possibility by potential users. In this paper we describe a system for the validation of semi-structured information

  18. proactive energy management for next-generation building systems

    E-Print Network [OSTI]

    Victor M Zavala

    2010-03-03

    Mar 3, 2010 ... PROACTIVE ENERGY MANAGEMENT FOR NEXT-GENERATION BUILDING SYSTEMS ... and an accurate prediction of the daily electricity demand profile. ... of weather conditions, fuel prices, heat gains, and utility demands.

  19. Reliability Improvement Programs in Steam Distribution and Power Generation Systems 

    E-Print Network [OSTI]

    Petto, S.

    1987-01-01

    can be found in power generation. steam distribution, and in all types of durable and non-durable Industrial productions. I 300 " 0 " 200 C " ? ? ~ 'DO ?~ 50 ' .. '7. '70 '75 '50 '.2 The cost to maintain steam systems. namely...

  20. Corporate Training On-Site Online Global

    E-Print Network [OSTI]

    Barrett, Jeffrey A.

    MAKE THE RIGHT MOVE Corporate Training On-Site · Online · Global IMPROVE YOUR COMPETITIVE ADVANTAGE WITH WORLD-CLASS ON-SITE AND ONLINE SOLUTIONS TAILORED TO MEET YOUR BUSINESS AND EMPLOYEE TRAINING NEEDS a competitive advantage depends on how well your staff executes. UCIrvineExtension's Corporate Training helps

  1. Distributed Generation Systems Inc | 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 APPENDIX ECoopButtePower VenturesInformation9)ask queriesWind FarmAreaDiscussionSystems

  2. Cold weather hydrogen generation system and method of operation

    SciTech Connect (OSTI)

    Dreier, Ken Wayne; Kowalski, Michael Thomas; Porter, Stephen Charles; Chow, Oscar Ken; Borland, Nicholas Paul; Goyette, Stephen Arthur

    2010-12-14

    A system for providing hydrogen gas is provided. The system includes a hydrogen generator that produces gas from water. One or more heat generation devices are arranged to provide heating of the enclosure during different modes of operation to prevent freezing of components. A plurality of temperature sensors are arranged and coupled to a controller to selectively activate a heat source if the temperature of the component is less than a predetermined temperature.

  3. A digital-based excitation system for generator voltage control

    SciTech Connect (OSTI)

    D'Antonio, M.J.; Lawson, R.A.; Pearson, W.R. (General Electric Co., Salem, VA (US)); Speer, G.W. (General Electric Canada, Peterborough, Ontario (CA)); Crenshaw, M.L.; Murdoch, A. (GE Industrial and Power Systems, Power Systems Engineering Dept., Schenectady, NY (US))

    1991-01-01

    Excitation systems have evolved over the years as new technology is introduced, offering easier implementations, higher reliability, less maintenance, enhanced functionality, and user friendly interfaces. Microprocessor based controls are now common in electric drives, protective relaying, turbine controls, power plant displays and supervisory control functions. The flexibility, functionality, and user friendly interface capabilities of digital controls are now available for excitation systems. This paper provides an overview of GE's first generation digital excitation system, SILCO 5, and an introduction to GE's second generation system, EX2000, currently in development.

  4. The next generation of oxy-fuel boiler systems

    SciTech Connect (OSTI)

    Ochs, Thomas L.; Gross, Alex; Patrick, Brian; Oryshchyn, Danylo B.; Summers, Cathy A.; Turner, Paul C.

    2005-01-01

    Research in the area of oxy-fuel combustion which is being pioneered by Jupiter Oxygen Corporation combined with boiler research conducted by the USDOE/Albany Research Center has been applied to designing the next generation of oxy-fuel combustion systems. The new systems will enhance control of boiler systems during turn-down and improve response time while improving boiler efficiency. These next generation boiler systems produce a combustion product that has been shown to be well suited for integrated pollutant removal. These systems have the promise of reducing boiler foot-print and boiler construction costs. The modularity of the system opens the possibility of using this design for replacement of boilers for retrofit on existing systems.

  5. CPV 481 (A Hierarchical CPV Solar Generation Tracking System

    E-Print Network [OSTI]

    Cho, Sung-Bae

    knowledge even when the data are not enough. Bayesian network modules infer the weather states which inferred weather states and the system makes a decision using the rules. We collected real weather data CPV 481 CPV (A Hierarchical CPV Solar Generation Tracking System based on Modular

  6. Single module pressurized fuel cell turbine generator system

    DOE Patents [OSTI]

    George, Raymond A. (Pittsburgh, PA); Veyo, Stephen E. (Murrysville, PA); Dederer, Jeffrey T. (Valencia, PA)

    2001-01-01

    A pressurized fuel cell system (10), operates within a common pressure vessel (12) where the system contains fuel cells (22), a turbine (26) and a generator (98) where preferably, associated oxidant inlet valve (52), fuel inlet valve (56) and fuel cell exhaust valve (42) are outside the pressure vessel.

  7. 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.

  8. Colibri: Towards a New Generation of Advanced Planning Systems

    E-Print Network [OSTI]

    Boyer, Edmond

    forecasting consists in forecasting future sales based on past sales. In a company, one or several forecasters a company to another. However, in gen- eral, this period concerns the twelve future months. 4. Future salesColibri: Towards a New Generation of Advanced Planning Systems Fatoumata Camara Objet Direct

  9. A Fast Algorithm To Generate Open Meandric Systems and Meanders

    E-Print Network [OSTI]

    Sawada, Joe

    can be thought of as the system formed by an infinite river running from northwest to east which optimization steps to yield the first fast and simple algorithm to generate open meanders. Categories analogy of a road with 6 bridges and a meandering river. (b)(a) Fig. 2. a) Example of an open meandric

  10. A new osmium-191/iridium-191m generator system

    SciTech Connect (OSTI)

    Brihaye, C.; Knapp, F.F. Jr.; Butler, T.A.; Guillaume, M.

    1985-05-01

    Ir-191m (t/sub 1/2/ 4.96 sec) has very attractive properties for radionuclide angiography and is obtained from the long-lived (15 d) Os-191 parent. Because of the long parent half-life, generators could have an extended shelf-life (2-3 weeks) if the problems of low Ir-191m yields and rapidly increasing Os-191 breakthrough could be overcome. A new /sup 191/Os//sup 191m/Ir generator system has now been developed involving adsorption of K/sub 2/OsCl/sub 6/ (Os-IV) on heat-treated (800/sup 0/C) activated coconut carbon. This system gives consistently good Ir-191m yields of --35-40% for a 2 ml bolus and low Os-191 breakthrough of --1 x 10/sup -4/%/bolus over a 2-3 week period. In addition, this simple system does not require a scavenger column and no radiolysis has been detected after loading up to 1 Ci of Os-191. The generator is prepared from 140-230 mesh carbon and eluted with pH 2 - 0.9% NaCl containing 0.25% KI. The use of KI in the eluting solution is critical for generator performance. Yield and breakthrough do not change for up to 250 elutions of the prototype system. The generator eluent is neutralized to physiological pH and isotonicity with 0.13 M Tris buffer immediately prior to intravenous injection. No adverse effects have been observed in studies in normal adult volunteers. This new system has a long shelf-life and represents a simple, readily available source of Ir-191m for radionuclide angiography.

  11. A new osmium-191/iridium-191m generator system

    SciTech Connect (OSTI)

    Brihaye, C.; Knapp, F.F. Jr.; Butler, T.A.; Guillaume, M.

    1985-05-01

    Ir-191m (t1/2 4.96 sec) has very attractive properties for radionuclide angiography and is obtained from the long-lived (15 d) 0s-191 parent. Because of the long parent half-life, generators could have an extended shelf-life (2-3 weeks) if the problems of low Ir-191m yields and rapidly increasing Os-191 breakthrough could be overcome. A new /sup 191/Os//sup 191m/Ir generator system has now been developed involving adsorption of K/sub 2/OsCl/sub 6/ (0s-IV) on heat-treated (800/sup 0/C) activated coconut carbon. This system gives consistently good Ir-191m yields of approx. =35-40% for a 5 ml bolus and low Os-191 breakthrough of approx. =1x10/sup -4/% bolus over a 2-3 week period. In addition, this simple system does not require a scavenger column and no radiolysis has been detected after loading up to 1 Ci of Os-191. The generator is prepared from 140-230 mesh carbon and eluted with pH 2 - 0.9% NaCl containing 0.025% KI. The use of KI in the eluting solution is critical for generator performance. Yield and breakthrough do not change for up to 250 elutions of the prototype system. The generator eluent is neutralized to physiological pH and isotonicity with 0.13 M Tris buffer immediately prior to intravenous injection. No adverse effects have been observed in studies in normal adult volunteers. This system has a long shelf-life and represents a simple, readily available source of Ir-191m for radionuclide angiography.

  12. Avoiding Distribution System Upgrade Costs Using Distributed Generation

    SciTech Connect (OSTI)

    Schienbein, Lawrence A.; Balducci, Patrick J.; Nguyen, Tony B.; Brown, Daryl R.; DeSteese, John G.; Speer, Gregory A.

    2004-01-20

    PNNL, in cooperation with three utilities, developed a database and methodology to analyze and characterize the avoided costs of Distributed Generation (DG) deployment as an alternative to traditional distribution system investment. After applying a number of screening criteria to the initial set of 307 cases, eighteen were selected for detailed analysis. Alternative DG investment scenarios were developed for these cases to permit capital, operation, maintenance, and fuel costs to be identified and incorporated into the analysis. The “customer-owned” backup power generator option was also investigated. The results of the analysis of the 18 cases show that none yielded cost savings under the alternative DG scenarios. However, the DG alternative systems were configured using very restrictive assumptions concerning reliability, peak rating, engine types and acceptable fuel. In particular it was assumed that the DG alternative in each case must meet the reliability required of conventional distribution systems (99.91% reliability). The analysis was further constrained by a requirement that each substation meet the demands placed upon it by a one in three weather occurrence. To determine if, by relaxing these requirements, the DG alternative might be more viable, one project was re-examined. The 99.91% reliability factor was still assumed for normal operating conditions but redundancy required to maintain reliability was relaxed for the relatively few hours every three years where extreme weather caused load to exceed present substation capacity. This resulted in the deferment of capital investment until later years and reduced the number of engines required for the project. The cost of both the conventional and DG alternative also dropped because the centralized power generation, variable O&M, and DG fuels costs were calculated based on present load requirements in combination with long-term forecasts of load growth, as opposed to load requirements plus a buffer based on predictions of extraordinary weather conditions. Application of the relaxed set of assumptions reduced the total cost of the DG alternative by roughly 57 percent from $7.0 million to $3.0 million. The reduction, however, did not change the overall result of the analysis, as the cost of the conventional distribution system upgrade alternative remained lower at $1.7 million. This paper also explores the feasibility of using a system of backup generators to defer investment in distribution system infrastructure. Rather than expanding substation capacity at substations experiencing slow load growth rates, PNNL considered a scenario where diesel generators were installed on location at customers participating in a program designed to offer additional power security and reliability to the customer and connection to the grid. The backup generators, in turn, could be used to meet peak demand for a limited number of hours each year, thus deferring distribution system investment. Data from an existing program at one of the three participating utilities was used to quantify the costs associated with the backup generator scenario. The results of the “customer owned” backup power generator analysis showed that in all cases the nominal cost of the DG scenario is more than the nominal cost of the base-case conventional distribution system upgrade scenario. However, in two of the cases the total present value costs of the alternative backup generator scenarios were between 15 and 22% less than those for the conventional scenarios. Overall, the results of the study offer considerable encouragement that the use of DG systems can defer conventional distribution system upgrades under the right conditions and when the DG configurations are intelligently designed. Using existing customer-owned DG to defer distribution system upgrades appears to be an immediate commercially-viable opportunity.

  13. An Analysis of Patch Plausibility and Correctness for Generate-And-Validate Patch Generation Systems (Supplementary Material)

    E-Print Network [OSTI]

    Qi, Zichao

    2015-05-21

    We analyze reported patches for three prior generate-and-validate patch generation systems (GenProg, RSRepair, and AE). Because of errors in the patch evaluation infrastructure, the majority of the reported patches violate ...

  14. An Analysis of Patch Plausibility and Correctness for Generate-And-Validate Patch Generation Systems (Supplementary Material)

    E-Print Network [OSTI]

    Qi, Zichao

    2015-02-02

    We analyze reported patches for three prior generate-and-validate patch generation systems (GenProg, RSRepair, and AE). Because of experimental error, the majority of the reported patches violate the basic principle behind ...

  15. Quantifying the system balancing cost when wind energy is incorporated into electricity generation system 

    E-Print Network [OSTI]

    Issaeva, Natalia

    2009-01-01

    Incorporation of wind energy into the electricity generation system requires a detailed analysis of wind speed in order to minimize system balancing cost and avoid a significant mismatch between supply and demand. Power ...

  16. Systems engineering approach towards performance monitoring of emergency diesel generator

    SciTech Connect (OSTI)

    Ramli, Nurhayati Yong-kwan, Lee

    2014-02-12

    Systems engineering is an interdisciplinary approach and means to enable the realization of successful systems. In this study, systems engineering approach towards the performance monitoring of Emergency Diesel Generator (EDG) is presented. Performance monitoring is part and parcel of predictive maintenance where the systems and components conditions can be detected before they result into failures. In an effort to identify the proposal for addressing performance monitoring, the EDG boundary has been defined. Based on the Probabilistic Safety Analysis (PSA) results and industry operating experiences, the most critical component is identified. This paper proposed a systems engineering concept development framework towards EDG performance monitoring. The expected output of this study is that the EDG reliability can be improved by the performance monitoring alternatives through the systems engineering concept development effort.

  17. Next Generation Nuclear Plant Resilient Control System Functional Analysis

    SciTech Connect (OSTI)

    Lynne M. Stevens

    2010-07-01

    Control Systems and their associated instrumentation must meet reliability, availability, maintainability, and resiliency criteria in order for high temperature gas-cooled reactors (HTGRs) to be economically competitive. Research, perhaps requiring several years, may be needed to develop control systems to support plant availability and resiliency. This report functionally analyzes the gaps between traditional and resilient control systems as applicable to HTGRs, which includes the Next Generation Nuclear Plant; defines resilient controls; assesses the current state of both traditional and resilient control systems; and documents the functional gaps existing between these two controls approaches as applicable to HTGRs. This report supports the development of an overall strategy for applying resilient controls to HTGRs by showing that control systems with adequate levels of resilience perform at higher levels, respond more quickly to disturbances, increase operational efficiency, and increase public protection.

  18. 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.

  19. A reliability assessment methodology for distribution systems with distributed generation 

    E-Print Network [OSTI]

    Duttagupta, Suchismita Sujaya

    2006-08-16

    is associated 11 Fig. 1. Sample Distribution Network with the network response to dynamic and transient failures caused from faults and other disturbances, which could result in widespread cascading outages and loss of stability [11]. This research will focus... and maintain reliable power systems because cost of interruptions and power outages can have severe economic impact on the utility and its customers. At present, the deregulated electric power utilities are being restructured and operated as distinct generation...

  20. On-Site Renewable Power Purchase Agreements | Department of Energy

    Office of Environmental Management (EM)

    Project Financing On-Site Renewable Power Purchase Agreements On-Site Renewable Power Purchase Agreements The Federal Energy Management Program (FEMP) provides information,...

  1. Anosov C-systems and random number generators

    E-Print Network [OSTI]

    George Savvidy

    2015-09-04

    We are developing further our earlier suggestion to use hyperbolic Anosov C-systems for the Monte-Carlo simulations in high energy particle physics. The hyperbolic dynamical systems have homogeneous instability of all trajectories and as such they have mixing of all orders, countable Lebesgue spectrum and positive Kolmogorov entropy. These extraordinary ergodic properties follow from the C-condition introduced by Anosov. The C-condition defines a rich class of dynamical systems which span an open set in the space of all dynamical systems. The important property of C-systems is that they have a countable set of everywhere dense periodic trajectories and that their density exponentially increases with entropy. Of special interest are C-systems that are defined on a high dimensional torus. The C-systems on a torus are perfect candidates to be used for Monte-Carlo simulations. Recently an efficient algorithm was found, which allows very fast generation of long trajectories of the C-systems. These trajectories have high quality statistical properties and we are suggesting to use them for the QCD lattice simulations and at high energy particle physics.

  2. Collecting and Using Condensate on Site 

    E-Print Network [OSTI]

    Glawe, D.

    2013-01-01

    o n – D e c e m b e r 1 8 , 2 0 1 3 D i a n a D . G l a w e , P h D , P E , L E E D A P E n g i n e e r i n g S c i e n c e D e p a r t m e n t Collecting & using condensate on site ESL-KT-13-12-43 CATEE 2013: Clean Air... the other way around too…… saving energy saves water) ESL-KT-13-12-43 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 On site water sources • Condensate • Rainwater • Cooling...

  3. Methodology for the production and delivery of generative music for the personal listener : systems for realtime generative music production 

    E-Print Network [OSTI]

    Murphy, Michael J.

    2013-11-27

    This thesis will describe a system for the production of generative music through specific methodology, and provide an approach for the delivery of this material. The system and body of work will be targeted specifically ...

  4. Agent-Based Simulation of Distribution Systems with High Penetration of Photovoltaic Generation

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    1 Agent-Based Simulation of Distribution Systems with High Penetration of Photovoltaic Generation- tems, photovoltaic generation, power distribution, power system economics, smart grids. I. INTRODUCTION study of electric distribution systems with high penetration of photovoltaic (PV) panels within

  5. 3rd Generation SCR System Using Solid Ammonia Storage and Direct...

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

    rd Generation SCR System Using Solid Ammonia Storage and Direct Gas Dosing 3rd Generation SCR System Using Solid Ammonia Storage and Direct Gas Dosing SCR system provides direct...

  6. Next Generation Trusted Radiation Identification System (NG-TRIS).

    SciTech Connect (OSTI)

    Flynn, Adam J.; Amai, Wendy A.; Merkle, Peter Benedict; Anderson, Lawrence Frederick; Strother, Jerry D.; Weber, Thomas M.; Etzkin, Joshua L.

    2010-05-01

    The original Trusted Radiation Identification System (TRIS) was developed from 1999-2001, featuring information barrier technology to collect gamma radiation template measurements useful for arms control regime operations. The first TRIS design relied upon a multichannel analyzer (MCA) that was external to the protected volume of the system enclosure, undesirable from a system security perspective. An internal complex programmable logic device (CPLD) contained data which was not subject to software authentication. Physical authentication of the TRIS instrument case was performed by a sensitive but slow eddy-current inspection method. This paper describes progress to date for the Next Generation TRIS (NG-TRIS), which improves the TRIS design. We have incorporated the MCA internal to the trusted system volume, achieved full authentication of CPLD data, and have devised rapid methods to authenticate the system enclosure and weld seals of the NG-TRIS enclosure. For a complete discussion of the TRIS system and components upon which NG-TRIS is based, the reader is directed to the comprehensive user's manual and system reference of Seager, et al.

  7. FIPS 1402 NonProprietary Security Policy: Persistent Systems Wave Relay Quad Radio Router and Man Portable Unit (Generation 2, Generation 3 Single/Dual, and Generation 4)

    E-Print Network [OSTI]

    FIPS 1402 NonProprietary Security Policy: Persistent Systems Wave Relay Quad Radio Router and Man Wave Relay Quad Radio Router and Man Portable Unit (Generation 2, Generation 3 Single;FIPS 1402 NonProprietary Security Policy: Persistent Systems Wave Relay Quad Radio Router and Man

  8. System and method for generating current by selective electron heating

    DOE Patents [OSTI]

    Fisch, Nathaniel J. (Princeton, NJ); Boozer, Allen H. (Rocky Hill, NJ)

    1984-01-01

    A system for the generation of toroidal current in a plasma which is prepared in a toroidal magnetic field. The system utilizes the injection of high-frequency waves into the plasma by means of waveguides. The wave frequency and polarization are chosen such that when the waveguides are tilted in a predetermined fashion, the wave energy is absorbed preferentially by electrons traveling in one toroidal direction. The absorption of energy in this manner produces a toroidal electric current even when the injected waves themselves do not have substantial toroidal momentum. This current can be continuously maintained at modest cost in power and may be used to confine the plasma. The system can operate efficiently on fusion grade tokamak plasmas.

  9. INTEGRATED POWER GENERATION SYSTEMS FOR COAL MINE WASTE METHANE UTILIZATION

    SciTech Connect (OSTI)

    Peet M. Soot; Dale R. Jesse; Michael E. Smith

    2005-08-01

    An integrated system to utilize the waste coal mine methane (CMM) at the Federal No. 2 Coal Mine in West Virginia was designed and built. The system includes power generation, using internal combustion engines, along with gas processing equipment to upgrade sub-quality waste methane to pipeline quality standards. The power generation has a nominal capacity of 1,200 kw and the gas processing system can treat about 1 million cubic feet per day (1 MMCFD) of gas. The gas processing is based on the Northwest Fuel Development, Inc. (NW Fuel) proprietary continuous pressure swing adsorption (CPSA) process that can remove nitrogen from CMM streams. The two major components of the integrated system are synergistic. The byproduct gas stream from the gas processing equipment can be used as fuel for the power generating equipment. In return, the power generating equipment provides the nominal power requirements of the gas processing equipment. This Phase III effort followed Phase I, which was comprised of a feasibility study for the project, and Phase II, where the final design for the commercial-scale demonstration was completed. The fact that NW Fuel is desirous of continuing to operate the equipment on a commercial basis provides the validation for having advanced the project through all of these phases. The limitation experienced by the project during Phase III was that the CMM available to operate the CPSA system on a commercial basis was not of sufficiently high quality. NW Fuel's CPSA process is limited in its applicability, requiring a relatively high quality of gas as the feed to the process. The CPSA process was demonstrated during Phase III for a limited time, during which the processing capabilities met the expected results, but the process was never capable of providing pipeline quality gas from the available low quality CMM. The NW Fuel CPSA process is a low-cost ''polishing unit'' capable of removing a few percent nitrogen. It was never intended to process CMM streams containing high levels of nitrogen, as is now the case at the Federal No.2 Mine. Even lacking the CPSA pipeline delivery demonstration, the project was successful in laying the groundwork for future commercial applications of the integrated system. This operation can still provide a guide for other coal mines which need options for utilization of their methane resources. The designed system can be used as a complete template, or individual components of the system can be segregated and utilized separately at other mines. The use of the CMM not only provides an energy fuel from an otherwise wasted resource, but it also yields an environmental benefit by reducing greenhouse gas emissions. The methane has twenty times the greenhouse effect as compared to carbon dioxide, which the combustion of the methane generates. The net greenhouse gas emission mitigation is substantial.

  10. BIOMASS GASIFICATION AND POWER GENERATION USING ADVANCED GAS TURBINE SYSTEMS

    SciTech Connect (OSTI)

    David Liscinsky

    2002-10-20

    A multidisciplined team led by the United Technologies Research Center (UTRC) and consisting of Pratt & Whitney Power Systems (PWPS), the University of North Dakota Energy & Environmental Research Center (EERC), KraftWork Systems, Inc. (kWS), and the Connecticut Resource Recovery Authority (CRRA) has evaluated a variety of gasified biomass fuels, integrated into advanced gas turbine-based power systems. The team has concluded that a biomass integrated gasification combined-cycle (BIGCC) plant with an overall integrated system efficiency of 45% (HHV) at emission levels of less than half of New Source Performance Standards (NSPS) is technically and economically feasible. The higher process efficiency in itself reduces consumption of premium fuels currently used for power generation including those from foreign sources. In addition, the advanced gasification process can be used to generate fuels and chemicals, such as low-cost hydrogen and syngas for chemical synthesis, as well as baseload power. The conceptual design of the plant consists of an air-blown circulating fluidized-bed Advanced Transport Gasifier and a PWPS FT8 TwinPac{trademark} aeroderivative gas turbine operated in combined cycle to produce {approx}80 MWe. This system uses advanced technology commercial products in combination with components in advanced development or demonstration stages, thereby maximizing the opportunity for early implementation. The biofueled power system was found to have a levelized cost of electricity competitive with other new power system alternatives including larger scale natural gas combined cycles. The key elements are: (1) An Advanced Transport Gasifier (ATG) circulating fluid-bed gasifier having wide fuel flexibility and high gasification efficiency; (2) An FT8 TwinPac{trademark}-based combined cycle of approximately 80 MWe; (3) Sustainable biomass primary fuel source at low cost and potentially widespread availability-refuse-derived fuel (RDF); (4) An overall integrated system that exceeds the U.S. Department of Energy (DOE) goal of 40% (HHV) efficiency at emission levels well below the DOE suggested limits; and (5) An advanced biofueled power system whose levelized cost of electricity can be competitive with other new power system alternatives.

  11. Tidal Energy System for On-Shore Power Generation

    SciTech Connect (OSTI)

    Bruce, Allan J

    2012-06-26

    Addressing the urgent need to develop LCOE competitive renewable energy solutions for US energy security and to replace fossil-fuel generation with the associated benefits to environment impacts including a reduction in CO2 emissions, this Project focused on the advantages of using hydraulic energy transfer (HET) in large-scale Marine Hydrokinetic (MHK) systems for harvesting off-shore tidal energy in US waters. A recent DOE resource assessment, identifies water power resources have a potential to meet 15% of the US electric supply by 2030, with MHK technologies being a major component. The work covered a TRL-4 laboratory proof-in-concept demonstration plus modeling of a 15MW full scale system based on an approach patented by NASA-JPL, in which submerged high-ratio gearboxes and electrical generators in conventional MHK turbine systems are replaced by a submerged hydraulic radial pump coupled to on-shore hydraulic motors driving a generator. The advantages are; first, the mean-time-between-failure (MTBF), or maintenance, can be extended from approximately 1 to 5 years and second, the range of tidal flow speeds which can be efficiently harvested can be extended beyond that of a conventional submerged generator. The approach uses scalable, commercial-off-the-shelf (COTS) components, facilitating scale-up and commercialization. All the objectives of the Project have been successfully met (1) A TRL4 system was designed, constructed and tested. It simulates a tidal energy turbine, with a 2-m diameter blade in up to a 2.9 m/sec flow. The system consists of a drive motor assembly providing appropriate torque and RPM, attached to a radial piston pump. The pump circulates pressurized, environmentally-friendly, HEES hydraulic fluid in a closed loop to an axial piston motor which drives an electrical generator, with a resistive load. The performance of the components, subsystems and system were evaluated during simulated tidal cycles. The pump is contained in a tank for immersion testing. The COTS pump and motor were selected to scale to MW size and were oversized for the TRL-4 demonstration, operating at only 1-6% of rated values. Nevertheless, in for 2-18 kW drive power, in agreement with manufacturer performance data, we measured efficiencies of 85-90% and 75-80% for the pump and motor, respectively. These efficiencies being 95-96% at higher operating powers. (2) Two follow-on paths were identified. In both cases conventional turbine systems can be modified, replacing existing gear box and generator with a hydraulic pump and on-shore components. On a conventional path, a TRL5/6 15kW turbine system can be engineered and tested on a barge at an existing site in Maine. Alternatively, on an accelerated path, a TRL-8 100kW system can be engineered and tested by modifying a team member's existing MHK turbines, with barge and grid-connected test sites in-place. On both paths the work can be expedited and cost effective by reusing TRL-4 components, modifying existing turbines and using established test sites. (3) Sizing, performance modeling and costing of a scaled 15MW system, suitable for operation in Maine's Western Passage, was performed. COTS components are identified and the performance projections are favorable. The estimated LCOE is comparable to wind generation with peak production at high demand times. (4) We determined that a similar HET approach can be extended to on-shore and off-shore wind turbine systems. These are very large energy resources which can be addressed in parallel for even great National benefit. (5) Preliminary results on this project were presented at two International Conferences on renewable energy in 2012, providing a timely dissemination of information. We have thus demonstrated a proof-in-concept of a novel, tidal HET system that eliminates all submerged gears and electronics to improve reliability. Hydraulic pump efficiencies of 90% have been confirmed in simulated tidal flows between 1 and 3 m/s, and at only 1-6% of rated power. Total system efficiencies have also been modeled, up to MW-scale, for ti

  12. 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

  13. Reliability Evaluation of Electric Power Generation Systems with Solar Power 

    E-Print Network [OSTI]

    Samadi, Saeed

    2013-11-08

    Conventional power generators are fueled by natural gas, steam, or water flow. These generators can respond to fluctuating load by varying the fuel input that is done by a valve control. Renewable power generators such as ...

  14. Distributed Generation with Heat Recovery and Storage

    E-Print Network [OSTI]

    Siddiqui, Afzal S.; Marnay, Chris; Firestone, Ryan M.; Zhou, Nan

    2008-01-01

    selection of on-site power generation with combined heat andTotal Electricity Generation Figure 13. Small MercantileWeekday Total Electricity Generation (No Storage Adoption

  15. Coal-fired high performance power generating system. Final report

    SciTech Connect (OSTI)

    1995-08-31

    As a result of the investigations carried out during Phase 1 of the Engineering Development of Coal-Fired High-Performance Power Generation Systems (Combustion 2000), the UTRC-led Combustion 2000 Team is recommending the development of an advanced high performance power generation system (HIPPS) whose high efficiency and minimal pollutant emissions will enable the US to use its abundant coal resources to satisfy current and future demand for electric power. The high efficiency of the power plant, which is the key to minimizing the environmental impact of coal, can only be achieved using a modern gas turbine system. Minimization of emissions can be achieved by combustor design, and advanced air pollution control devices. The commercial plant design described herein is a combined cycle using either a frame-type gas turbine or an intercooled aeroderivative with clean air as the working fluid. The air is heated by a coal-fired high temperature advanced furnace (HITAF). The best performance from the cycle is achieved by using a modern aeroderivative gas turbine, such as the intercooled FT4000. A simplified schematic is shown. In the UTRC HIPPS, the conversion efficiency for the heavy frame gas turbine version will be 47.4% (HHV) compared to the approximately 35% that is achieved in conventional coal-fired plants. This cycle is based on a gas turbine operating at turbine inlet temperatures approaching 2,500 F. Using an aeroderivative type gas turbine, efficiencies of over 49% could be realized in advanced cycle configuration (Humid Air Turbine, or HAT). Performance of these power plants is given in a table.

  16. Fuel Cell Tri-Generation System Case Study using the H2A Stationary...

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

    Tri-Generation System Case Study using the H2A Stationary Model Fuel Cell Tri-Generation System Case Study using the H2A Stationary Model Overview of H2A stationary model concept,...

  17. Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part I: Numerical Modeling

    E-Print Network [OSTI]

    Xu, Xianfan

    Thermoelectric Generators for Automotive Waste Heat Recovery Systems Part I: Numerical Modeling (TEG) designed for automotive waste heat recovery systems. This model is capable of computing telluride TEMs. Key words: Thermoelectric generators, waste heat recovery, automotive exhaust, skutterudites

  18. Power System Modeling of 20percent Wind-Generated Electricity by 2030

    E-Print Network [OSTI]

    Hand, Maureen

    2008-01-01

    fueled power generation with wind energy reduces waterand water savings. Index Terms—power system modeling, wind

  19. Low and high Temperature Dual Thermoelectric Generation Waste Heat Recovery System for Light-Duty Vehicles

    Broader source: Energy.gov [DOE]

    Developing a low and high temperature dual thermoelectric generation waste heat recovery system for light-duty vehicles.

  20. Development of vanadium redox flow battery for photovoltaic generation system

    SciTech Connect (OSTI)

    Shibata, Akira; Sato, Kanji; Nakajima, Masato

    1994-12-31

    Photovoltaic power generation system (PV) requires a battery for night and rainy day. A redox flow battery has advantage over a lead acid one on this application for the capability of deep discharge and needlessness of equalized charge. The authors have developed the high performance vanadium redox flow battery for this purpose and inexpensive production technology of electrolyte which occupies the majority in the battery cost by chemical reduction from boiler plant by-product. The 2 kW (10 kWh) battery, the minimum unit for practical size battery (50 kW x 50 h), achieved 1.2 kW/cm{sup 2}-electrode area at the 100 mA/cm{sup 2} current density.

  1. Photovoltaic power generation system free of bypass diodes

    DOE Patents [OSTI]

    Lentine, Anthony L.; Okandan, Murat; Nielson, Gregory N.

    2015-07-28

    A photovoltaic power generation system that includes a solar panel that is free of bypass diodes is described herein. The solar panel includes a plurality of photovoltaic sub-modules, wherein at least two of photovoltaic sub-modules in the plurality of photovoltaic sub-modules are electrically connected in parallel. A photovoltaic sub-module includes a plurality of groups of electrically connected photovoltaic cells, wherein at least two of the groups are electrically connected in series. A photovoltaic group includes a plurality of strings of photovoltaic cells, wherein a string of photovoltaic cells comprises a plurality of photovoltaic cells electrically connected in series. The strings of photovoltaic cells are electrically connected in parallel, and the photovoltaic cells are microsystem-enabled photovoltaic cells.

  2. Potential Federal On-Site Solar Aggregation in Washington, D...

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

    Potential Federal On-Site Solar Aggregation in Washington, D.C., and Maryland Potential Federal On-Site Solar Aggregation in Washington, D.C., and Maryland Presentation describes...

  3. Evaluation of glare at the Ivanpah Solar Electric Generating System

    SciTech Connect (OSTI)

    Ho, C. K.; Sims, C. A.; Christian, J. M.

    2015-06-05

    The Ivanpah Solar Electric Generating System (ISEGS), located on I-15 about 40 miles (60 km) south of Las Vegas, NV, consists of three power towers 459 ft (140 m) tall and over 170,000 reflective heliostats with a rated capacity of 390 MW. In addition, reports of glare from the plant have been submitted by pilots and air traffic controllers and recorded by the Aviation Safety Reporting System and the California Energy Commission since 2013. Aerial and ground-based surveys of the glare were conducted in April, 2014, to identify the cause and to quantify the irradiance and potential ocular impacts of the glare. Results showed that the intense glare viewed from the airspace above ISEGS was caused by heliostats in standby mode that were aimed to the side of the receiver. Evaluation of the glare showed that the retinal irradiance and subtended source angle of the glare from the heliostats in standby were sufficient to cause significant ocular impact (potential for after-image) up to a distance of ~6 miles (10 km), but the values were below the threshold for permanent eye damage. Glare from the receivers had a low potential for after-image at all ground-based monitoring locations outside of the site boundaries. A Letter to Airmen has been issued by the Federal Aviation Administration to notify pilots of the potential glare hazards. Additional measures to mitigate the potential impacts of glare from ISGES are also presented and discussed.

  4. Evaluation of glare at the Ivanpah Solar Electric Generating System

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ho, C. K.; Sims, C. A.; Christian, J. M.

    2015-06-05

    The Ivanpah Solar Electric Generating System (ISEGS), located on I-15 about 40 miles (60 km) south of Las Vegas, NV, consists of three power towers 459 ft (140 m) tall and over 170,000 reflective heliostats with a rated capacity of 390 MW. In addition, reports of glare from the plant have been submitted by pilots and air traffic controllers and recorded by the Aviation Safety Reporting System and the California Energy Commission since 2013. Aerial and ground-based surveys of the glare were conducted in April, 2014, to identify the cause and to quantify the irradiance and potential ocular impacts ofmore »the glare. Results showed that the intense glare viewed from the airspace above ISEGS was caused by heliostats in standby mode that were aimed to the side of the receiver. Evaluation of the glare showed that the retinal irradiance and subtended source angle of the glare from the heliostats in standby were sufficient to cause significant ocular impact (potential for after-image) up to a distance of ~6 miles (10 km), but the values were below the threshold for permanent eye damage. Glare from the receivers had a low potential for after-image at all ground-based monitoring locations outside of the site boundaries. A Letter to Airmen has been issued by the Federal Aviation Administration to notify pilots of the potential glare hazards. Additional measures to mitigate the potential impacts of glare from ISGES are also presented and discussed.« less

  5. Computer controlled MHD power consolidation and pulse generation system

    SciTech Connect (OSTI)

    Johnson, R.; Marcotte, K.; Donnelly, M.

    1990-01-01

    The major goal of this research project is to establish the feasibility of a power conversion technology which will permit the direct synthesis of computer programmable pulse power. Feasibility has been established in this project by demonstration of direct synthesis of commercial frequency power by means of computer control. The power input to the conversion system is assumed to be a Faraday connected MHD generator which may be viewed as a multi-terminal dc source and is simulated for the purpose of this demonstration by a set of dc power supplies. This consolidation/inversion (CI), process will be referred to subsequently as Pulse Amplitude Synthesis and Control (PASC). A secondary goal is to deliver a controller subsystem consisting of a computer, software, and computer interface board which can serve as one of the building blocks for a possible phase II prototype system. This report period work summarizes the accomplishments and covers the high points of the two year project. 6 refs., 41 figs.

  6. SURVEY OF NOISE SUPPRESSION SYSTEMS FOR ENGINE GENERATOR SETS...

    Office of Scientific and Technical Information (OSTI)

    POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS; ENGINES; NOISE POLLUTION ABATEMENT; POLLUTION CONTROL EQUIPMENT; ELECTRIC GENERATORS No abstract prepared....

  7. On-Site Wastewater Treatment Systems: Mound Systems (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2002-04-18

    de aguas negras Sistema de mont?culo Bruce Lesikar y Juan Enciso Promotores Especialistas en Ingenier?a Agr?cola El Sistema Universitario Texas A&M Para este tipo de sistema, un ?mont?culo? de tierra elevado se construye encima de la tierra natural... Cooperative State Research, Education, and Extension Service, U.S. Department of Agriculture, bajo acuerdo no. 2001-45049-01149. TWRI 1102 de operaci?n y mantenimiento para el sistema de pretratamiento. Los sistemas de mont?culo est?ndares se han hecho...

  8. On-Site Wastewater Treatment Systems: Spray Distribution System (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2002-04-18

    efluente de esta calidad: unidades de tratamiento aer?bico de Clase I, y filtros de arena intermi- tentes. Ambos son procesos de tratamiento aer?bicos (usan ox?geno). La Comisi?n para la Conservaci?n de los Recursos Naturales de Texas mantiene una lista de... las unidades de tratamiento aer?bico, Clase I, que han sido aprobadas para su uso en Texas. Los filtros de arena intermitentes deben dise?arse para ajustarse a las condiciones del sitio, y se aprueban seg?n el dise?o para su sitio. Otros tipos de...

  9. On-Site Wastewater Treatment Systems: Alternative Collection Systems (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2002-04-22

    mucho y porque las leyes ambientales, cada vez m?s estrictas, dificultan el descargo de aguas negras tratadas en los r?os, arroyos y aguas costeras, y lo hacen m?s costoso. Opciones descentralizadas En la actualidad, hay muchas alternativas a los...?todo. Sin embargo, los funcionarios gubernamentales que regulan este sector prefieren las alternativas en suelo porque tienen un efecto ambiental m?nimo en los arroyos y los r?os. Los sistemas en suelo cuentan con los sistemas de aplicaci?n en suelo que...

  10. 3D City Model Generator: The Application of Neuro-Fuzzy Systems in CAD

    E-Print Network [OSTI]

    163 3D City Model Generator: The Application of Neuro-Fuzzy Systems in CAD Yoshihiro Kobayashi that generates 3D city models from satellite images is formulated, implemented, and tested. Techniques from operations. Therefore, it is expected to develop a system that will generate 3D city models more easily

  11. Chinese Sentence Generation in a KnowledgeBased Machine Translation System

    E-Print Network [OSTI]

    Spirtes, Peter

    Chinese Sentence Generation in a Knowledge­Based Machine Translation System Tangqiu Li, Eric H presents a technique for generating Chinese sentences from the Interlingua expressions used in the KANT knowledge­based machine translation system. Chinese sentences are generated directly from the semantic

  12. The role of hydroelectric generation in electric power systems with large scale wind generation

    E-Print Network [OSTI]

    Hagerty, John Michael

    2012-01-01

    An increasing awareness of the operational challenges created by intermittent generation of electricity from policy-mandated renewable resources, such as wind and solar, has led to increased scrutiny of the public policies ...

  13. Impact of distributed generation of solar photovoltaic (PV) generation on the Massachusetts transmission system

    E-Print Network [OSTI]

    Simhadri, Arvind

    2015-01-01

    After reaching 250 megawatt direct current (MW dc) of solar photovoltaic (PV) generation installed in Massachusetts (MA) in 2013, four years ahead of schedule, Governor Deval Patrick in May of 2013 announced an increase ...

  14. Maximum entropy generation in open systems: the Fourth Law?

    E-Print Network [OSTI]

    Umberto Lucia

    2010-11-17

    This paper develops an analytical and rigorous formulation of the maximum entropy generation principle. The result is suggested as the Fourth Law of Thermodynamics.

  15. Air-cooled Condensers in Next-generation Conversion Systems

    Office of Energy Efficiency and Renewable Energy (EERE)

    DOE Geothermal Program Peer Review 2010 - Presentation. Project objective: to reduce the costs associated with the generation of electrical power from air-cooled binary plants.

  16. Subsystem Interaction Analysis in Power Distribution Systems of Next Generation Airlifters

    E-Print Network [OSTI]

    Lindner, Douglas K.

    tolerant, autonomously controlled electrical power system to deliver high quality power from the sources electronics, fault tolerant electrical power distribution systems and electrically driven primary flight1 Subsystem Interaction Analysis in Power Distribution Systems of Next Generation Airlifters Sriram

  17. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01

    AEE Solar. 2010 Renewable Energy Design Guide and Catalog.2009, 2010, Interstate Renewable Energy Council. RetrievedDC) generated by on-site renewable energy systems in its DC

  18. A PROBLEM SOLVING APPROACH TO GENERATING TEXT FROM SYSTEMIC GRAMMARS* Terry Patten

    E-Print Network [OSTI]

    A PROBLEM SOLVING APPROACH TO GENERATING TEXT FROM SYSTEMIC GRAMMARS* Terry Patten Dept possible by a special relationship between systemic grammar and problem solving: both are organized solving techniques are used to generate text from systemic grammars.** Problem solving is a general term

  19. AN AUTOMATED TOOL FOR HDL AND CONFIGURATION FILE GENERATION FROM UML SYSTEM DESCRIPTIONS

    E-Print Network [OSTI]

    Thornton, Mitchell

    An Automated Tool for HDL and Configuration File Generation from UML System Descriptions Advisor: Professor of optimally dividing system functionality between hardware and software. This project uses Unified Modeling#12;AN AUTOMATED TOOL FOR HDL AND CONFIGURATION FILE GENERATION FROM UML SYSTEM DESCRIPTIONS

  20. 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

  1. Thin Thermoelectric Generator System for Body Energy KRISHNA T. SETTALURI,1

    E-Print Network [OSTI]

    Ram, Rajeev J.

    Thin Thermoelectric Generator System for Body Energy Harvesting KRISHNA T. SETTALURI,1 HSINYI LO,1, MA 02139, USA. 2.--e-mail: katey@mit.edu Wearable thermoelectric generators (TEGs) harvest thermal transfer system as part of the overall thermoelectric (TE) system. In particular, the small heat transfer

  2. El Dorado County Water Systems Energy Generation Project

    E-Print Network [OSTI]

    .energy.ca.gov/research/renewable/ May 2011 The Issue The water supply, conveyance, treatment, and hydroelectricity generation industry #12;CEC-500-2012-FS-014 · Analyzing the recommendations from a recent El Dorado County Hydroelectric

  3. Generation, Translocation, and Action of Nitric Oxide in Living Systems

    E-Print Network [OSTI]

    Tennyson, Andrew G.

    Nitric oxide (NO) is a gaseous diatomic radical that is involved in a wide range of physiological and pathological functions in biology. Conceptually, the biochemistry of NO can be separated into three stages: generation ...

  4. Power Generation From Waste Heat Using Organic Rankine Cycle Systems 

    E-Print Network [OSTI]

    Prasad, A.

    1980-01-01

    Many efforts are currently being pursued to develop and implement new energy technologies aimed at meeting our national energy goals The use of organic Rankine cycle engines to generate power from waste heat provides a near term means to greatly...

  5. Combined fuel and air staged power generation system

    SciTech Connect (OSTI)

    Rabovitser, Iosif K; Pratapas, John M; Boulanov, Dmitri

    2014-05-27

    A method and apparatus for generation of electric power employing fuel and air staging in which a first stage gas turbine and a second stage partial oxidation gas turbine power operated in parallel. A first portion of fuel and oxidant are provided to the first stage gas turbine which generates a first portion of electric power and a hot oxidant. A second portion of fuel and oxidant are provided to the second stage partial oxidation gas turbine which generates a second portion of electric power and a hot syngas. The hot oxidant and the hot syngas are provided to a bottoming cycle employing a fuel-fired boiler by which a third portion of electric power is generated.

  6. Energy Savings with High Temperature Water Generation Systems 

    E-Print Network [OSTI]

    Manicke, A. C.

    1982-01-01

    rapidly. This paper will present and evaluate the use of a high temperature water (HTW) system and a conventional steam system. Solid, liquid and gaseous fuel applications will be presented along with the application of HTW to Cogeneration Systems. Life...

  7. Control Oriented Modeling and System Identification of a Diesel Generator Set (Genset)

    E-Print Network [OSTI]

    Li, Perry Y.

    Control Oriented Modeling and System Identification of a Diesel Generator Set (Genset) Kai Loon Cheong, Perry Y. Li and Jicheng Xia Abstract-- A diesel generator set (genset) refers to a diesel engine of a conventional PI regulator in the voltage closed control loop of a diesel driven generator is considered. In all

  8. Re-Dispatching Generation to Increase Power System Security Margin and Support Low Voltage Bus

    E-Print Network [OSTI]

    Re-Dispatching Generation to Increase Power System Security Margin and Support Low Voltage Bus by re-dispatching generator outputs, using a normal vector found at a voltage collapse boundary or a low voltage boundary (LVB). This method uses the normal vector as an indicator to change the generation

  9. An Application of the Interlingua System ISS for Spanish-English Pronominal Anaphora Generation,

    E-Print Network [OSTI]

    An Application of the Interlingua System ISS for Spanish-English Pronominal Anaphora Generation to generate the pronominal anaphora into the Spanish and English languages. We also describe the main problems in the pronoun generation into both languages such as zero-subject constructions and number, gender and syntactic

  10. Generating Climbing Plants Using L-Systems Master of Science Thesis in the Programme Software Engineering and

    E-Print Network [OSTI]

    Assarsson, Ulf

    Generating Climbing Plants Using L-Systems Master of Science Thesis in the Programme Software Generating Climbing Plants Using L-Systems Johan Knutzen © Johan Knutzen Examiner: Ulf Assarsson Department Plants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3 Generating Climbing

  11. Integrated Energy System Dispatch Optimization

    E-Print Network [OSTI]

    Firestone, Ryan; Stadler, Michael; Marnay, Chris

    2006-01-01

    Abstract - On-site cogeneration of heat and electricity,containing an on-site cogeneration system subject to random

  12. Seismic wave generation systems and methods for cased wells

    DOE Patents [OSTI]

    Minto, James (Houston, TX); Sorrells, Martin H (Huffman, TX); Owen, Thomas E. (Helotes, TX); Schroeder, Edgar C. (San Antonio, TX)

    2011-03-29

    A vibration source (10) includes an armature bar (12) having a major length dimension, and a driver (20A) positioned about the armature bar. The driver (20A) is movably coupled to the armature bar (12), and includes an electromagnet (40). During operation the electromagnet (40) is activated such that the driver (20A) moves with respect to the armature bar (12) and a vibratory signal is generated in the armature bar. A described method for generating a vibratory signal in an object includes positioning the vibration source (10) in an opening of the object, coupling the armature bar (12) to a surface of the object within the opening, and activating the electromagnet (40) of the driver (20A) such that the driver moves with respect to the armature bar (12) and a vibratory signal is generated in the armature bar and the object.

  13. High temperature adhesive silicone foam composition, foam generating system and method of generating foam

    DOE Patents [OSTI]

    Mead, Judith W. (Peralta, NM); Montoya, Orelio J. (Albuquerque, NM); Rand, Peter B. (Albuquerque, NM); Willan, Vernon O. (Albuquerque, NM)

    1984-01-01

    Access to a space is impeded by generation of a sticky foam from a silicone polymer and a low boiling solvent such as a halogenated hydrocarbon. In a preferred aspect, the formulation is polydimethylsiloxane gel mixed with F502 Freon as a solvent and blowing agent, and pressurized with CO.sub.2 in a vessel to about 250 PSI, whereby when the vessel is opened, a sticky and solvent resistant foam is deployed. The foam is deployable, over a wide range of temperatures, adhering to wet surfaces as well as dry, is stable over long periods of time and does not propagate flame or lose adhesive properties during an externally supported burn.

  14. Learning user modelling strategies for adaptive referring expression generation in spoken dialogue systems 

    E-Print Network [OSTI]

    Janarthanam, Srinivasan Chandrasekaran

    2011-06-30

    We address the problem of dynamic user modelling for referring expression generation in spoken dialogue systems, i.e how a spoken dialogue system should choose referring expressions to refer to domain entities to users ...

  15. A Metadata Generation System for Scanned Scientic Volumes

    E-Print Network [OSTI]

    Giles, C. Lee

    functionalities to digital library users. We propose methods for automatically generating volume level, issue are underway at public and commercial digital libraries to preserve cultural artifacts in digital format in the public domain, the Universal Library Project (also called the Million Book Project) [8] has completed

  16. A Metadata Generation System for Scanned Scientific Volumes

    E-Print Network [OSTI]

    Giles, C. Lee

    functionalities to digital library users. We propose methods for automatically generating volume level, issue are underway at public and commercial digital libraries to preserve cultural artifacts in digital format in the public domain, the Universal Library Project (also called the Million Book Project) [8] has completed

  17. Generation of Character Motion by Reactive Motion Capture System

    E-Print Network [OSTI]

    Thawonmas, Ruck

    in the human-scale virtual environment. Our purpose is to make character animations with character motion data: Force Feedback, Motion Cap- ture, Human-scale Virtual Environments, Virtual Human 1 Introduction To generate the human motions in virtual envi- ronments made by a computer that are similar to the real world

  18. "Greening" Industrial Steam Generation via On-demand Steam Systems 

    E-Print Network [OSTI]

    Smith, J. P.

    2010-01-01

    boiler technology currently in service in the U.S., it is critical to raise awareness and examine the role of emerging new technologies to address the energy and environmental challenges inherent with steam generation. In the same way that tank-less...

  19. A Role Casting Method Based on Emotions in a Story Generation System

    E-Print Network [OSTI]

    Thawonmas, Ruck

    A Role Casting Method Based on Emotions in a Story Generation System Ruck Thawonmas1 , Masanao point out a problem in the role casting method of a story generation system called OPIATE and then propose a solution to this problem. The existing casting method does not take into account the emotions

  20. A test case generation approach for conformance testing of SDL systems1

    E-Print Network [OSTI]

    Aboulhamid, El Mostapha

    1 A test case generation approach for conformance testing of SDL systems1 C. Bourhfir2 , E This paper presents an approach for automatic executable test case and test sequence generation for a protocol modeled by an SDL system. Our methodology uses a uni- fied method which tests an Extended Finite

  1. PLATO Power--a robust, low environmental impact power generation system for the Antarctic plateau

    E-Print Network [OSTI]

    Ashley, Michael C. B.

    PLATO Power--a robust, low environmental impact power generation system for the Antarctic plateau the power generation and management system of PLATO. Two redundant arrays of solar panels and a multiply astronomical facilities on the Antarctic plateau, offering minimum environmental impact and requiring minimal

  2. The State of the Art of Generators for Wind Energy Conversion Systems

    E-Print Network [OSTI]

    Boyer, Edmond

    The State of the Art of Generators for Wind Energy Conversion Systems Yassine Amirat, Mohamed Benbouzid, Bachir Bensaker and René Wamkeue Abstract--Wind Energy Conversion Systems (WECS) have become as to index some emerging solutions. Index Terms--Wind turbine, WECS, generator, state of the art, comparison

  3. Designing Efficient Systems Services and Primitives for Next-Generation Data-Centers

    E-Print Network [OSTI]

    Panda, Dhabaleswar K.

    Designing Efficient Systems Services and Primitives for Next-Generation Data-Centers K08) #12;Designing Efficient Systems Services and Primitives for Next-Generation Data-Centers K University {vaidyana, narravul, balaji, panda}@cse.ohio-state.edu Abstract Current data-centers lack

  4. Grid-Connected Marine Current Generation System Power Smoothing Control Using Supercapacitors

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Grid-Connected Marine Current Generation System Power Smoothing Control Using Supercapacitors fluctuations in the generator power. This paper deals with power smoothing control of grid connected MCT system a smoothed grid-injected power in case of swell disturbances. Index Terms-Marine current turbine, power

  5. The State of the Art of Generators for Wind Energy Conversion Systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    243 1 The State of the Art of Generators for Wind Energy Conversion Systems Y. Amirat, M. E. H. Benbouzid, B. Bensaker, R. Wamkeue and H. Mangel Abstract--Wind Energy Conversion Systems (WECS) have become of the studied generators is provided in Fig. 2. II. WIND ENERGY BACKGROUND A. Wind Power Conversion

  6. Pressure drops for direct steam generation in line-focus solar thermal systems

    E-Print Network [OSTI]

    Pressure drops for direct steam generation in line-focus solar thermal systems John Pye1 , Graham) is increasingly the approach taken for new large-scale solar thermal energy projects. Compared to earlier systems the focus of the solar collector, and then generate steam outside the collector in a large heat exchanger

  7. Robust Generator System Using PM Assisted Synchronous Reluctance Generator with Current-fed Drive 

    E-Print Network [OSTI]

    Baek, Jeihoon

    2011-02-22

    used to fine tune the LPM model. For new optimum design converges, numerical optimizations and iterations were performed to produce LPM and FEA predictions. For the drive system, the thyristor based, current-fed drive is much simpler and has lower power...

  8. MARINE BIOMASS SYSTEM: ANAEROBIC DIGESTION AND PRODUCTION OF METHANE

    E-Print Network [OSTI]

    Haven, Kendall F.

    2011-01-01

    flow from an on-site steam turbine to raise the kelp to 45°Ca 1200 Kw electric steam turbine/generator system. CapitalFinally, the waste steam stream from the turbine is used to

  9. Plasma generators, reactor systems and related methods - Energy...

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

    and associated systems and methods are provided in accordance with the present invention. A plasma reactor may include multiple sections or modules which are removably...

  10. SYSTEM DEMONSTRATION NATURAL LANGUAGE GENERATION WITH ABSTRACT MACHINE

    E-Print Network [OSTI]

    ~it Tiibingen 72074 Tiibingen, Germany shuly©sf s.nphi i.uni-tueb ingen, de Abstract" We present a system

  11. EIS-0416: Ivanpah Solar Electric Generating System in San Bernardino...

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

    System (07-AFC-5) Project, Proposal to Construct a 400-m Megawatt Concentrated Solar Power Tower, Thermal-Electric Power Plant, San Bernardino County, California July 1,...

  12. Maximum power tracking control scheme for wind generator systems 

    E-Print Network [OSTI]

    Mena Lopez, Hugo Eduardo

    2009-05-15

    The purpose of this work is to develop a maximum power tracking control strategy for variable speed wind turbine systems. Modern wind turbine control systems are slow, and they depend on the design parameters of the turbine and use wind and/or rotor...

  13. Maximum power tracking control scheme for wind generator systems 

    E-Print Network [OSTI]

    Mena Lopez, Hugo Eduardo

    2008-10-10

    The purpose of this work is to develop a maximum power tracking control strategy for variable speed wind turbine systems. Modern wind turbine control systems are slow, and they depend on the design parameters of the turbine and use wind and/or rotor...

  14. Cost-Effectivenessof PhotovoltaicGenerationIn A Transmission-Constrained Load Area of An InterconnectedSystem

    E-Print Network [OSTI]

    Gross, George

    Abstract: Electric power systems of today are experiencing a difficulty of constrained transmission lines, present electric system networks are experiencing the difficulty of constrained transmission lines: Photovoltaic Generation, Power System Economics, Dispersed Generation, Transmission-Constrained Interconnected

  15. Plan generation strategies for a knowledge based process planning system 

    E-Print Network [OSTI]

    Hari, Umesh

    1993-01-01

    by the meta-knowledge entities called as meta-goals, meta-plans and meta-themes. These planning elements are then encapsulated into a plan generation mechanism within the master planner. The planning activity is stratified into four modules based... . 4. I Introduction 4. 2 Planning Mechanism 4. 3 Ontology of Planning Modes 4. 4 Meta-Planning Knowledge 4. 5 Architecture of the Master Planner V IDEFO MODELS OF PROCESS PLANNING ACTIVITIES Page 59 59 59 63 66 68 70 5. I Introduction 5...

  16. Application of Next-Generation Sensor Systems in HTRs 

    E-Print Network [OSTI]

    Johnson, Matthew Paul

    2013-04-30

    quickly before they cause serious complications. Furthermore, reactor safety margins can be accurately quantified. As advanced reactor types are proposed, new sensor systems should be developed together with new algorithms for neutron flux reconstruction...

  17. System level modeling of thermoelectric generators for automotive

    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 RankADVANCED MANUFACTURINGEnergyPlan | Department ofSUPPLEMENTSwitzerland 2012System PlanningSystem for

  18. NIS codes: OS = new/renewal on-site visit PT = proficiency testing on-site FOLUP = follow-up assessment MV = monitoring visit PRE = pre-assessment MOVE = on-site after lab move ADDTM = on-site to assess additions to scope

    E-Print Network [OSTI]

    NIS codes: OS = new/renewal on-site visit PT = proficiency testing on-site FOLUP = follow nonconformities only) #12;NIS codes: OS = new/renewal on-site visit PT = proficiency testing on-site FOLUP

  19. Physical Effects of Distributed PV Generation on California's Distribution System

    E-Print Network [OSTI]

    Cohen, Michael A

    2015-01-01

    Deployment of high-penetration photovoltaic (PV) power is expected to have a range of effects -- both positive and negative -- on the distribution grid. The magnitude of these effects may vary greatly depending upon feeder topology, climate, PV penetration level, and other factors. In this paper we present a simulation study of eight representative distribution feeders in three California climates at PV penetration levels up to 100\\%, supported by a unique database of distributed PV generation data that enables us to capture the impact of PV variability on feeder voltage and voltage regulating equipment. When comparing the influence of feeder location (i.e. climate) versus feeder type on outcomes, we find that location more strongly influences the incidence of reverse power flow, reductions in peak loading and the presence of voltage excursions. On the other hand, we find that feeder characteristics more strongly influence the magnitude of loss reduction and changes in voltage regulator operations. We find th...

  20. High gliding fluid power generation system with fluid component separation and multiple condensers

    SciTech Connect (OSTI)

    Mahmoud, Ahmad M; Lee, Jaeseon; Radcliff, Thomas D

    2014-10-14

    An example power generation system includes a vapor generator, a turbine, a separator and a pump. In the separator, the multiple components of the working fluid are separated from each other and sent to separate condensers. Each of the separate condensers is configured for condensing a single component of the working fluid. Once each of the components condense back into a liquid form they are recombined and exhausted to a pump that in turn drives the working fluid back to the vapor generator.

  1. The Impact of Solar Photovoltaic Generation on Balancing Requirements in the Southern Nevada System

    SciTech Connect (OSTI)

    Ma, Jian; Lu, Shuai; Hafen, Ryan P.; Etingov, Pavel V.; Makarov, Yuri V.; Chadliev, Vladimir

    2012-05-07

    Abstract—The impact of integrating large-scale solar photovoltaic (PV) generation on the balancing requirements in terms of regulation and load-following requirements in the southern Nevada balancing area is evaluated. The “swinging door” algorithm and the “probability box” method developed by Pacific Northwest National Laboratory (PNNL) were used to quantify the impact of large PV generation on the balancing requirements of the system operations. The system’s actual scheduling, real-time dispatch and regulation processes were simulated. Different levels of distributed generation were also considered in the study. The impact of hourly solar PV generation forecast errors on regulation and load-following requirements was assessed. The sensitivity of balancing requirements with respect to real-time forecast errors of large PV generation was analyzed. Index Terms—Ancillary services, balancing requirements, load following, regulation, renewables integration, swinging door

  2. Distributed Energy Resources On-Site Optimization for Commercial Buildings with Electric and Thermal Storage Technologies

    SciTech Connect (OSTI)

    Lacommare, Kristina S H; Stadler, Michael; Aki, Hirohisa; Firestone, Ryan; Lai, Judy; Marnay, Chris; Siddiqui, Afzal

    2008-05-15

    The addition of storage technologies such as flow batteries, conventional batteries, and heat storage can improve the economic as well as environmental attractiveness of on-site generation (e.g., PV, fuel cells, reciprocating engines or microturbines operating with or without CHP) and contribute to enhanced demand response. In order to examine the impact of storage technologies on demand response and carbon emissions, a microgrid's distributed energy resources (DER) adoption problem is formulated as a mixed-integer linear program that has the minimization of annual energy costs as its objective function. By implementing this approach in the General Algebraic Modeling System (GAMS), the problem is solved for a given test year at representative customer sites, such as schools and nursing homes, to obtain not only the level of technology investment, but also the optimal hourly operating schedules. This paper focuses on analysis of storage technologies in DER optimization on a building level, with example applications for commercial buildings. Preliminary analysis indicates that storage technologies respond effectively to time-varying electricity prices, i.e., by charging batteries during periods of low electricity prices and discharging them during peak hours. The results also indicate that storage technologies significantly alter the residual load profile, which can contribute to lower carbon emissions depending on the test site, its load profile, and its adopted DER technologies.

  3. Sample Documents for On-Site Renewable Power Purchase Agreements

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program (FEMP) works with federal agencies and partners to assemble sample documents from past on-site renewable power purchase agreement (PPA) projects to help streamline the PPA process.

  4. Conceptual design and system analysis of a poly-generation system for power and olefin production from natural gas

    E-Print Network [OSTI]

    Huang, Yinlun

    from natural gas Yu Qian a,*, Jingyao Liu a , Zhixian Huang a , Andrzej Kraslawski b , Jian Cui Keywords: Poly-generation Thermodynamic analysis Natural gas Olefin a b s t r a c t In this paper, a novel poly-generation system for olefin and power production from natural gas is pro- posed, which integrates

  5. Electronic Power Conversion System for an Advanced Mobile Generator Set Leon M. Tolbert1,3

    E-Print Network [OSTI]

    Tolbert, Leon M.

    . The military generator set uses an internal combustion diesel engine to drive a radial-gap permanent magnet. The variable frequency, variable voltage produced by the permanent magnet alternator is diode-rectified to dcElectronic Power Conversion System for an Advanced Mobile Generator Set Leon M. Tolbert1

  6. A stochastic framework for uncertainty analysis in electric power transmission systems with wind generation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of generating units, the transfer of electric power over networks of transmission lines and, finally1 A stochastic framework for uncertainty analysis in electric power transmission systems with wind an electric transmission network with wind power generation and their impact on its reliability. A stochastic

  7. Pressure drops for direct steam generation in line-focus solar thermal systems

    E-Print Network [OSTI]

    Pressure drops for direct steam generation in line-focus solar thermal systems John Pye1 , Graham. Modelling is extended to include losses in connecting pipe-work, bends and valves, and updated pressure drop the focus of the solar collector, and then generate steam outside the collector in a large heat exchanger

  8. Impact of Renewable Distributed Generation on Power Systems M. Begovi, A. Pregelj, A. Rohatgi D. Novosel

    E-Print Network [OSTI]

    benefits also include loss reduction, avoided costs of energy production, generation capacity, distributionImpact of Renewable Distributed Generation on Power Systems M. Begovi, A. Pregelj, A. Rohatgi D, eliminating the unnecessary transmission and distribution costs. In addition, it can reduce fossil fuel

  9. Relational-Grammar-Based Generation in the JETS Japanese-English Machine Translation System

    E-Print Network [OSTI]

    Relational-Grammar-Based Generation in the JETS Japanese-English Machine Translation System David E This paper describes the design and func- tioning of the English generation phase in JETS, a limited transfer This paper discusses relational-grammar-based gener- ation in the context of JETS, a Japanese-English machine

  10. Systems and methods for generation of hydrogen peroxide vapor

    DOE Patents [OSTI]

    Love, Adam H; Eckels, Joel Del; Vu, Alexander K; Alcaraz, Armando; Reynolds, John G

    2014-12-02

    A system according to one embodiment includes a moisture trap for drying air; at least one of a first container and a second container; and a mechanism for at least one of: bubbling dried air from the moisture trap through a hydrogen peroxide solution in the first container for producing a hydrogen peroxide vapor, and passing dried air from the moisture trap into a headspace above a hydrogen peroxide solution in the second container for producing a hydrogen peroxide vapor. A method according one embodiment includes at least one of bubbling dried air through a hydrogen peroxide solution in a container for producing a first hydrogen peroxide vapor, and passing dried air from the moisture trap into a headspace above the hydrogen peroxide solution in a container for producing a second hydrogen peroxide vapor. Additional systems and methods are also presented.

  11. Aging generates regular motions in weakly chaotic systems

    E-Print Network [OSTI]

    Takuma Akimoto; Eli Barkai

    2012-09-27

    Using intermittent maps with infinite invariant measures, we investigate the universality of time-averaged observables under aging conditions. According to Aaronson-Darling-Kac theorem, in non-aged dynamical systems with infinite invariant measures, the distribution of the normalized time averages of integrable functions converge to the Mittag-Leffler distribution. This well known theorem holds when the start of observations coincides with the start of the dynamical processes. Introducing a concept of the aging limit where the aging time $t_a$ and the total measurement time $t$ goes to infinity while the aging ratio $t_a/t$ is a constant, we obtain a novel distributional limit theorem of time-averaged observables integrable with respect to the infinite invariant density. Applying the theorem to the Lyapunov exponent in intermittent maps, we find that regular motions and a weakly chaotic behavior coexist in the aging limit. This mixed type of dynamics is controlled by the aging ratio and hence is very different from the usual scenario of regular and chaotic motions in Hamiltonian systems. The probability of finding regular motions in non-aged processes is zero, while in the aging regime it is finite and it increases when system ages.

  12. Cryptanalysis of the Random Number Generator of the Windows Operating System

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Cryptanalysis of the Random Number Generator of the Windows Operating System Leo Dorrendorf School by the Windows operating system is the most commonly used PRNG. The pseudo-randomness of the output the second most popular operating system after Windows XP. (This investigation was done without any help from

  13. Proceedings of Power Systems 03: Distributed Generation and Advanced Metering 2002 Wichita State University

    E-Print Network [OSTI]

    Proceedings of Power Systems 03: Distributed Generation and Advanced Metering © 2002 Wichita State are critically dependent on the fuel quality and supply parameters for optimal power delivery and overall System Friction Losses (kW) PBearing Total System Bearing Losses (kW) PCon Electrical Conversion Losses

  14. Novel properties generated by interacting computational systems: A minimal model Fabio Boschetti1,2

    E-Print Network [OSTI]

    Boschetti, Fabio

    Novel properties generated by interacting computational systems: A minimal model Fabio questions: First, what is the smallest number of components a computational system needs in order such as selforganisation and emergence have been discussed in computational terms within Complex System Science

  15. Applying epoch-era analysis for homeowner selection of distributed generation power systems

    E-Print Network [OSTI]

    Pińa, Alexander L

    2014-01-01

    The current shift from centralized energy generation to a more distributed model has opened a number of choices for homeowners to provide their own power. While there are a number of systems to purchase, there are no tools ...

  16. Generating Electricity with your Steam System: Keys to Long Term Savings 

    E-Print Network [OSTI]

    Bullock, B.; Downing, A.

    2010-01-01

    The application of combined heat and power principals to existing plant steam systems can help produce electricity at more than twice efficiency of grid generated electricity. In this way, steam plant managers can realize substantial savings...

  17. Mitigation of steam generator tube rupture in a pressurized water reactor with passive safety systems

    DOE Patents [OSTI]

    McDermott, D.J.; Schrader, K.J.; Schulz, T.L.

    1994-05-03

    The effects of steam generator tube ruptures in a pressurized water reactor are mitigated by reducing the pressure in the primary loop by diverting reactor coolant through the heat exchanger of a passive heat removal system immersed in the in containment refueling water storage tank in response to a high feed water level in the steam generator. Reactor coolant inventory is maintained by also in response to high steam generator level introducing coolant into the primary loop from core make-up tanks at the pressure in the reactor coolant system pressurizer. The high steam generator level is also used to isolate the start-up feed water system and the chemical and volume control system to prevent flooding into the steam header. 2 figures.

  18. Mitigation of steam generator tube rupture in a pressurized water reactor with passive safety systems

    DOE Patents [OSTI]

    McDermott, Daniel J. (Export, PA); Schrader, Kenneth J. (Penn Hills, PA); Schulz, Terry L. (Murrysville Boro, PA)

    1994-01-01

    The effects of steam generator tube ruptures in a pressurized water reactor are mitigated by reducing the pressure in the primary loop by diverting reactor coolant through the heat exchanger of a passive heat removal system immersed in the in containment refueling water storage tank in response to a high feed water level in the steam generator. Reactor coolant inventory is maintained by also in response to high steam generator level introducing coolant into the primary loop from core make-up tanks at the pressure in the reactor coolant system pressurizer. The high steam generator level is also used to isolate the start-up feed water system and the chemical and volume control system to prevent flooding into the steam header. 2 figures.

  19. Use of Building Automation System Trend Data for Inputs Generation in Bottom-Up Simulation Calibration 

    E-Print Network [OSTI]

    Zibin, N. F.; Zmeureanu, R. G.; Love, J. A.

    2013-01-01

    for analysis and use in simulation is very large. This paper explores automating the process of generating inputs from Building Automation System (BAS) trend data for use in building simulation software. A proof-of-concept prototype called the Automatic...

  20. An evolution-based generative design system : using adaptation to shape architectural form

    E-Print Network [OSTI]

    Caldas, Luisa Gama (Maria Luisa da Oliveira Gama Caldas), 1968-

    2001-01-01

    This dissertation dwells in the interstitial spaces between the fields of architecture, environmental design and computation. It introduces a Generative Design System that draws on evolutionary concepts to incorporate ...

  1. Hydrogen generation systems utilizing sodium silicide and sodium silica gel materials

    DOE Patents [OSTI]

    Wallace, Andrew P.; Melack, John M.; Lefenfeld, Michael

    2015-07-14

    Systems, devices, and methods combine reactant materials and aqueous solutions to generate hydrogen. The reactant materials can sodium silicide or sodium silica gel. The hydrogen generation devices are used in fuels cells and other industrial applications. One system combines cooling, pumping, water storage, and other devices to sense and control reactions between reactant materials and aqueous solutions to generate hydrogen. Multiple inlets of varied placement geometries deliver aqueous solution to the reaction. The reactant materials and aqueous solution are churned to control the state of the reaction. The aqueous solution can be recycled and returned to the reaction. One system operates over a range of temperatures and pressures and includes a hydrogen separator, a heat removal mechanism, and state of reaction control devices. The systems, devices, and methods of generating hydrogen provide thermally stable solids, near-instant reaction with the aqueous solutions, and a non-toxic liquid by-product.

  2. Reaction force control implementation of a linear generator in irregular waves for a wave power system 

    E-Print Network [OSTI]

    Li, Bin

    2012-11-29

    Most designs for wave energy converters include a hydraulic (or pneumatic) interface between the wave device and the generator to smooth electricity production, but a direct drive power take-off system is a possible way ...

  3. On-Site Wastewater Treatment Systems: Trickling Filter 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2000-02-04

    A trickling filter is a bed of gravel or plastic media over which pretreated wastewater is sprayed. This publication explains how trickling filters treat wastewater and gives tips on how to maintain them....

  4. On-Site Wastewater Treatment Systems: Evapotranspiration Bed 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    1999-09-01

    Evapotranspiration (ET) beds treat wastewater in the soil by evaporation and by transpiration from plants growing there. This publication explains the treatment, design, operation and maintenance of ET beds....

  5. On-Site Wastewater Treatment Systems: Constructed Wetland Media 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Weaver, Richard; Richter, Amanda; O'Neill, Courtney

    2005-02-19

    or installer may know where to buy them. If not, the Texas Commission for Environmental Quality maintains a list of tire-chip processors on its Web site at: http://www.tceq.state.tx.us/assets/pub lic/comm_exec/pubs/sfr/069_03.pdf Configuration Wetland beds can...

  6. On-Site Wastewater Treatment Systems: Leaching Chambers (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2000-10-13

    para el tratamiento de aguas negras,? puede obtenerse gratis del World Wide Web en: http://texaserc.tamu.edu/pubs/ewaste Los programas educacionales del Servicio de Extensi?n Agr?cola de Texas est?n disponibles para todas las personas, sin distinci?n de... raza, color, sexo, minusvalid?z, religi?n, edad u origen nacional. Emitido en promoci?n del Trabajo Cooperativo de Extensi?n Agr?cola y Econom?a del Hogar, Decreto del Congreso del 8 de mayo de 1914, seg?n enmienda, y del 30 de junio de 1914, en...

  7. On-Site Wastewater Treatment Systems: Aerobic Treatment Unit (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2000-08-29

    causan enfermedades, un tanque bomba para dosificar el agua y rociadores para distribuir el agua sobre el suelo. Para mayor informaci?n sobre los componentes de desinfecci?n, el tanque bomba y la distribuci?n por rociado, vea la publicaci?n de Extensi?n L...&M Toda la serie de publicaciones, ?Sistemas individuales para el tratamiento de aguas negras,? puede obtenerse gratis del World Wide Web en: http://texaserc.tamu.edu Los programas educacionales del Servicio de Extensi?n Agr?cola de Texas est?n disponibles...

  8. On-Site Wastewater Treatment Systems: Trickling Filter (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2002-04-18

    orientaci?n sobre la operaci?n y el mantenimiento de los tanques s?pticos y los campos de aplicaci?n superficial, vea las publ- icaciones de Extensi?n Cooperativa sobre esos temas. Se pueden pedir del Servicio de Extensi?n y est?n disponibles en la World... educacionales de Extensi?n Cooperativa de Texas est?n disponibles para todas las personas, sin distinci?n de raza, color, sexo, discapacidad, religi?n, edad u origen nacional. Emitido en promoci?n del Trabajo Cooperativo de Extensi?n Agr?cola y Econom?a del...

  9. On-Site Wastewater Treatment Systems: Sand Filters (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2000-10-13

    programas educacionales del Servicio de Extensi?n Agr?cola de Texas est?n disponibles para todas las personas, sin distinci?n de raza, color, sexo, minusvalid?z, religi?n, edad u origen nacional. Emitido en promoci?n del Trabajo Cooperativo de Extensi?n Agr...?cola y Econom?a del Hogar, Decreto del Congreso del 8 de mayo de 1914, seg?n enmienda, y del 30 de junio de 1914, en cooperaci?n con el Departamento de Agricultura de los Estados Unidos. Chester P. Fehlis, Director Comisionado, el Servicio de Extensi?n...

  10. On-Site Wastewater Treatment Systems: Constructed Wetlands (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2002-04-18

    en suelo, vea la publicaci?n de Extensi?n Cooperativa, L-5227S, ?Fosa s?ptica y campo de absorci?n?. Los sistemas de humedal quitan los materiales biol?gicos, los s?lidos en suspensi?n, los nutrientes y los pat?geno de las aguas negras. Para... mantenimiento. Vea la publicaci?n de Extensi?n Coopera- tiva, L-5227S, ?Tanque s?ptico/ Campo de absorci?n?, para obtener ideas sobre c?mo mantener el tanque s?ptico y el sistema de aplicaci?n en suelo. En general, d?le mantenimiento al tanque s?ptico peri...

  11. On-Site Wastewater Treatment Systems: Soil Particle Analysis Procedure 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2005-08-18

    diameter Fine Fine gravelly 5 to 20 mm diameter Medium Medium gravelly 20 to 75 mm diameter Coarse Coarse gravelly 75 to 250 mm diameter Cobbles Cobbly 250 to 600 mm diameter Stones Stony ?600 mm diameter Boulders Bouldery Flat: 2 to 150 mm long Channers... Channery 150 to 380 mm long Flagstones Flaggy 380 to 600 mm long Stones Stony ?600 mm long Boulders Bouldery 1 The roundness of fragments may be indicated as angular (has strongly developed faces with sharp edges), irregular (has prominent flat faces...

  12. On-Site Wastewater Treatment Systems: Pump Tank (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2000-08-29

    negras Tanque bomba Sistema de distribuci?n por rociado L-5346S 8-00 Figura 1: Un tanque bomba recolecta las aguas negras tratadas y las dosifica en intervalos al suelo. Sistemas individuales para el tratamiento de aguas negras Tanque bomba Bruce... Lesikar y Juan Enciso Promotores Especialistas de Ingenier?a Agr?cola El Sistema Universitario Texas A&M L os tanques bomba son contendores de hormig?n, fibra de vidrio o polietileno que recolectan las aguas negras que ser?n dosificadas en intervalos al...

  13. On-Site Wastewater Treatment Systems: Tablet Chlorination (Spanish) 

    E-Print Network [OSTI]

    Weaver, Richard; Lesikar, Bruce J.; Enciso, Juan

    2006-01-30

    componentes: ? Las pastillas de cloro. ? Un tubo que sostiene las pastillas. ? Un dispositivo de contacto que pone a las pastillas de cloro en contacto con las aguas negras. ? Un tanque de almacenamiento, por lo general un tanque bomba, donde las... bomba, donde termina el proceso de desinfec- ci?n. En este punto, las aguas negras se llaman aguas recuperadas. Las regula- ciones de Texas exigen que las aguas recuperadas tengan por lo menos 0.2 miligramos de cloro por litro de aguas negras o que...

  14. On-Site Wastewater Treatment Systems: Operation and Maintenance (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2000-08-15

    ?o del terreno, su ubicaci?n y el tipo de suelo no permiten otra alternativa para el tratamiento de aguas negras. Mantenimiento y administraci?n Los distintos sistemas individuales para el tratamiento de aguas negras requieren diferentes procedimientos de...

  15. On-Site Wastewater Treatment Systems: Evapotranspiration Bed (Spanish) 

    E-Print Network [OSTI]

    Lesikar, Bruce J.; Enciso, Juan

    2002-04-18

    de escorrent?a alrededor del sistema Tubo perforado de monitoreo de 2 a 3 pulgadas Tela geotextil Suelo arcilloso Colch?n de arena Revestimiento de cloruro de polivinilo Separaci?n de un m?ximo de 2 pies Espacio de 4 pies Cama alternativa de...

  16. Technology Enablers for Next-Generation Economic Building Monitoring Systems 

    E-Print Network [OSTI]

    Sweeney, J., Jr.; Culp, C.

    2001-01-01

    -controllers and mixed signal processors and use Java and XML. INTRODUCTION On-going metering and monitoring is an essential part of the CCSM process [1]. Monitoring a building's energy and environmental conditions generally requires the measurement of the building... and size but the price may be lower in high volume [10]. By combining the SBC with small footprint embedded operating systems (Linux, WinCE, BeIA), micro-relational databases and a Java Virtual Machine, complex applications may be run at the embedded level...

  17. A Multi-Modular Neutronically Coupled Power Generation System 

    E-Print Network [OSTI]

    Patel, Vishal

    2012-07-16

    EOL End of life HT-IMMTR High Temperature Integrated Multi-Modular Thermal Reactor HTGR High Temperature Gas Cooled Reactor LWR Light water reactor LOCA Loss of coolant accident LOFA Loss of ow accident MOL Middle of life MWth Megawatts Thermal... upwards of 45%. In comparison, LWR water rankine cycles have e ciencies of about 33%, meaning the ScCO2 brayton cycle could be much more economical than an LWR rankine cycle. 1.4 Design Objectives The system is intended for use either autonomously...

  18. Reliability Improvement Programs in Steam Distribution and Power Generation Systems 

    E-Print Network [OSTI]

    Atlas, R. D.

    1986-01-01

    , and the paybacks associated with instituting a program of planned and systematic maintenance manage ment of that system. Energy costs can be reduced by 10% and maintenance costs by 20%, while achieving other tan gible improvements in the reliability...-up; and 6)'software and data base management. Several case studies, in which the concept has been success fully applied, will be presented. INTRODUCTION Energy costs have been on the rise for the last 10 years and have now leveled off due to global...

  19. Distributed Generation Systems Inc DISGEN | 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 APPENDIX ECoopButtePower VenturesInformation9)ask queriesWind FarmAreaDiscussionSystems Inc

  20. Sandia Energy - Grid System Planning for Wind: Wind Generator Modeling

    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 WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal Energy & Drilling Technology HomeGrid CyberGridGrid System

  1. Impact of Generator Flexibility on Electric System Costs and Integration of Renewable Energy

    Broader source: Energy.gov [DOE]

    Flexibility of traditional generators plays an important role in accommodating the increased variability and uncertainty of wind and solar on the electric power system. Increased flexibility can be achieved with changes to operational practices or upgrades to existing generation. One challenge is in understanding the value of increasing flexibility, and how this value may change given higher levels of variable generation. This study uses a commercial production cost model to measure the impact of generator flexibility on the integration of wind and solar generators. We use a system that is based on two balancing areas in the Western United States with a range of wind and solar penetrations between 15% and 60%, where instantaneous penetration of wind and solar is limited to 80%.

  2. Electrical power systems (Guatemala). Small generators and turbines, March 1992. Export trade information

    SciTech Connect (OSTI)

    Not Available

    1992-03-01

    In Guatemala the market for all types of electrical power generator systems, including parts and accessories, increased from US $19.5 million in 1990 to US $25.5 in 1991 (up 30.7 percent). Guatemalan import statistics list within this category all types of turbines and hydraulic electric power generating engines, regardless of their size or power generating capacity. Also included in the study are all types of electrical generators that are moved or operated by an attached fuel powered engine. The outlook for future market demand for electrical power generating systems looks promising for the next three or four years, with an estimated average increase of 7.3 percent per year.

  3. Impact of Generator Flexibility on Electric System Costs and Integration of Renewable Energy

    SciTech Connect (OSTI)

    Palchak, D.; Denholm, P.

    2014-07-01

    Flexibility of traditional generators plays an important role in accommodating the increased variability and uncertainty of wind and solar on the electric power system. Increased flexibility can be achieved with changes to operational practices or upgrades to existing generation. One challenge is in understanding the value of increasing flexibility, and how this value may change given higher levels of variable generation. This study uses a commercial production cost model to measure the impact of generator flexibility on the integration of wind and solar generators. We use a system that is based on two balancing areas in the Western United States with a range of wind and solar penetrations between 15% and 60%, where instantaneous penetration of wind and solar is limited to 80%.

  4. Development and commercialization of a biomass gasification/power generation system

    SciTech Connect (OSTI)

    Paisley, M.A.; Farris, G.

    1995-11-01

    The US Department of Energy (DOE) has been a leader in the promotion and development of alternative fuel supplies based on renewable energy crops. One promising power generation technology is biomass gasification coupled with either a gas turbine in a combined cycle system or a fuel cell. The gasification of biomass can efficiently and economically produce a renewable source of a clean gaseous fuel suitable for use in these high efficiency power systems or as a substitute fuel in other combustion devices such as boilers, kilns, or other natural gas fired equipment. This paper discusses the development and commercialization of the Battelle high-throughput gasification process for gas turbine based power generation systems. Projected process economics for a gas turbine combined cycle plant are presented along with a description of integrated system operation coupling a 200kW gas turbine power generation system to a 10 ton per day gasifier, and current commercialization activities.

  5. Variable Renewable Generation can Provide Balancing Control to the Electric Power System (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-09-01

    As wind and solar plants become more common in the electric power system, they may be called on to provide grid support services to help maintain system reliability. For example, through the use of inertial response, primary frequency response, and automatic generation control (also called secondary frequency response), wind power can provide assistance in balancing the generation and load on the system. These active power (i.e., real power) control services have the potential to assist the electric power system in times of disturbances and during normal conditions while also potentially providing economic value to consumers and variable renewable generation owners. This one-page, two-sided fact sheet discusses the grid-friendly support and benefits renewables can provide to the electric power system.

  6. Integrating Solar Thermal and Photovoltaic Systems in Whole Building Energy Simulation 

    E-Print Network [OSTI]

    Cho, S.; Haberl, J.

    2010-01-01

    This paper introduces methodologies on how the renewable energy generated by the solar thermal and solar photovoltaic (PV) systems installed on site can be integrated in the whole building simulation analyses, which ...

  7. Portable gas chromatograph mass spectrometer for on-site chemical analyses

    DOE Patents [OSTI]

    Haas, Jeffrey S. (San Ramon, CA); Bushman, John F. (Oakley, CA); Howard, Douglas E. (Livermore, CA); Wong, James L. (Livermore, CA); Eckels, Joel D. (Livermore, CA)

    2002-01-01

    A portable, lightweight (approximately 25 kg) gas chromatograph mass spectrometer, including the entire vacuum system, can perform qualitative and quantitative analyses of all sample types in the field. The GC/MS has a conveniently configured layout of components for ease of serviceability and maintenance. The GC/MS system can be transported under operating or near-operating conditions (i.e., under vacuum and at elevated temperature) to reduce the downtime before samples can be analyzed on-site.

  8. An Integrated Automatic Test Data Generation System A. Jefferson Offutt \\Lambda

    E-Print Network [OSTI]

    Offutt, Jeff

    , mutation testing, software testing, test data generation, unit testing. To Appear in: Journal of Systems during unit testing, the majority of testing of practical software is done at the integration techniques for unit testing is that large software systems typically have hundreds or thousands of program

  9. Sensorless Adaptive Output Feedback Control of Wind Energy Systems with PMS Generators

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Sensorless Adaptive Output Feedback Control of Wind Energy Systems with PMS Generators A. El the problem of controlling wind energy conversion (WEC) systems involving permanent magnet synchronous is to maximize wind energy extraction which cannot be achieved without letting the wind turbine rotor operate

  10. Generating textures on Surfaces with Reaction-Diffusion systems in Leonardo Carvalho Maria Andrade* Luiz Velho

    E-Print Network [OSTI]

    Generating textures on Surfaces with Reaction-Diffusion systems in the GPU Leonardo Carvalho Maria on smooth surfaces of arbitrary topology using Reaction- Diffusion systems in a graphics processing unit implementation can heavily increase the velocity of computation. Keywords: surfaces; differential operators

  11. The second generation of electronic diesel fuel injection systems - Investigation with a rotary pump

    SciTech Connect (OSTI)

    Yamada, K.; Oshizawa, H.

    1986-01-01

    This paper describes concepts of the next generation of electronic diesel fuel injection (EDFI) systems, and the test results of the prototype, named ''Model-1.'' Important characteristics of the next generation of EDFI will be; mechanical simplicity, direct control and pump intelligence. Direct spill control using a high speed solenoid valve for injection regulation and pump mounted electronic circuits were used in the ''Model-1'' system. The test results demonstrate the advantages of this system, and suggest possibilities of new function such as individual cylinder control, pilot injection and multi fuel usage.

  12. Capacity Value of PV and Wind Generation in the NV Energy System

    SciTech Connect (OSTI)

    Lu, Shuai; Diao, Ruisheng; Samaan, Nader A.; Etingov, Pavel V.

    2014-03-21

    Calculation of photovoltaic (PV) and wind power capacity values is important for estimating additional load that can be served by new PV or wind installations in the electrical power system. It also is the basis for assigning capacity credit payments in systems with markets. Because of variability in solar and wind resources, PV and wind generation contribute to power system resource adequacy differently from conventional generation. Many different approaches to calculating PV and wind generation capacity values have been used by utilities and transmission operators. Using the NV Energy system as a study case, this report applies peak-period capacity factor (PPCF) and effective load carrying capability (ELCC) methods to calculate capacity values for renewable energy sources. We show the connection between the PPCF and ELCC methods in the process of deriving a simplified approach that approximates the ELCC method. This simplified approach does not require generation fleet data and provides the theoretical basis for a quick check on capacity value results of PV and wind generation. The diminishing return of capacity benefit as renewable generation increases is conveniently explained using the simplified capacity value approach.

  13. Processing large sensor data sets for safeguards : the knowledge generation system.

    SciTech Connect (OSTI)

    Thomas, Maikel A.; Smartt, Heidi Anne; Matthews, Robert F.

    2012-04-01

    Modern nuclear facilities, such as reprocessing plants, present inspectors with significant challenges due in part to the sheer amount of equipment that must be safeguarded. The Sandia-developed and patented Knowledge Generation system was designed to automatically analyze large amounts of safeguards data to identify anomalous events of interest by comparing sensor readings with those expected from a process of interest and operator declarations. This paper describes a demonstration of the Knowledge Generation system using simulated accountability tank sensor data to represent part of a reprocessing plant. The demonstration indicated that Knowledge Generation has the potential to address several problems critical to the future of safeguards. It could be extended to facilitate remote inspections and trigger random inspections. Knowledge Generation could analyze data to establish trust hierarchies, to facilitate safeguards use of operator-owned sensors.

  14. Laser system design for the generation of a sodium-layer laser guide star

    SciTech Connect (OSTI)

    Friedman, H.W.

    1993-01-01

    The design considerations for a laser system used to generate a sodium-layer guide star are presented. Laser technology developed for the Atomic Vapor Laser Isotope Separation (AVLIS) Program is shown to be directly relevant to this problem and results of a demonstration using the AVLIS laser to generate such a guide star are shown. The design of a compact laser suitable for use at a large telescope such as the Keck is also presented.

  15. Proposed guidelines for reporting performance of a solar dish/Stirling electric generation system

    SciTech Connect (OSTI)

    Stine, W.B.; Powell, M.A.

    1992-12-31

    Experimental performance data from dish/Stirling system testing can be analyzed to generate a system performance model. An approach to developing an experimentally based performance model of a dish/Stirling system is given. Two methods for analyzing the experimental data are described. To provide information that will permit comparison of dish/Stirling systems, it is necessary to define many of the details involved in calculating system performance data such as the net system output and system solar-to-electric efficiency. This paper describes a set of guidelines for these calculations, based on past experience, especially with the Vanguard dish/Stirling system. Also presented are a set of rating conditions at which a maximum value for system efficiency can be calculated. Comparison between systems of their rated peak solar-to-electric efficiency is made possible when these rating conditions are in common use by manufacturers and testing agencies.

  16. Generation-based memory synchronization in a multiprocessor system with weakly consistent memory accesses

    DOE Patents [OSTI]

    Ohmacht, Martin

    2014-09-09

    In a multiprocessor system, a central memory synchronization module coordinates memory synchronization requests responsive to memory access requests in flight, a generation counter, and a reclaim pointer. The central module communicates via point-to-point communication. The module includes a global OR reduce tree for each memory access requesting device, for detecting memory access requests in flight. An interface unit is implemented associated with each processor requesting synchronization. The interface unit includes multiple generation completion detectors. The generation count and reclaim pointer do not pass one another.

  17. Panel on Microgrids Systems International Conference on System of Systems Engineering, April 16-18, 2007 San Antonio Abstract--Application of individual distributed generators can

    E-Print Network [OSTI]

    Panel on Microgrids Systems International Conference on System of Systems Engineering, April 16 a system approach which views generation and associated loads as a subsystem or a "microgrid". The sources verification of the Consortium for Electric Reliability Technology Solutions (CERTS) microgrid control concepts

  18. Reduce completion fluid costs with on-site brine tests

    SciTech Connect (OSTI)

    Thomas, D.C.; Darlington, R.K.; Kinney, W.R.; Lowell, J.L.

    1982-09-01

    A newly developed field kit makes on-site brine completion fluid testing practical. Simple titration procedures are used to analyze brine for calcium, zinc, chloride and bromide with an accuracy and repeatability that compares favorably with expensive laboratory techniques. This article describes the field testing theory and details analytical procedures used.

  19. REPORT OF ON-SITE INSPECTION WORKSHOP-16

    SciTech Connect (OSTI)

    Sweeney, J J

    2009-07-07

    The central issue addressed by this workshop was the task of making the on-site inspection (OSI) part of the Comprehensive Nuclear-Test-Ban Treaty verification system operationally ready at entry into force of the Treaty. It is recognized, and this was emphasized by the 2008 OSI Integrated Field Exercise (IFE), that it is not possible to develop every part of the OSI regime simultaneously. Therefore, it is necessary to prioritize the approach to OSI readiness. The reviews of the IFE have pointed to many elements of OSI readiness that still need development. The objective of this workshop was to provide priorities for the path forward for Working Group B to consider. Several critical areas have been identified that are related to the development of OSI readiness: (1) Technology development: Priorities are radionuclide and noble gas sampling and analysis, visual observation, multispectral/infrared imaging methods, active seismic methods and the recognition of the importance of signatures. (2) Organizational development: Priorities are health and safety, the Operations Support Centre, the Equipment Storage and Maintenance Facility, information technology data flow and communications. (3) Resources: The expertise to develop key parts of the OSI regime is not available within the current OSI Division staff. To develop these aspects of the regime will require more staff or supplements to the staff with cost-free experts or other means. Aspects of the system that could benefit from more staff include radionuclide and noble gas detection methods, data flow and communications, visual observation, multispectral/infrared methods and health and safety. As the path forward, participants of this workshop recognized a need to optimize the development of OSI priorities. The outcome of this workshop is to suggest for consideration an operational approach to OSI readiness that utilizes results of an evaluation of the relative effectiveness of OSI elements versus their relative maturity. By integrating such an assessment with considerations of integrated operational capabilities and the anticipated level of inspection team self-sufficiency and measurable milestone criteria, a set of priorities for OSI development can be developed. Once these priorities have been established, the Policy Making Organs can decide upon the milestones, strategic plan and action plan to serve as guidance for implementation by the Provisional Technical Secretariat. The suggested operational approach is as follows: (1) Assess the relative effectiveness (importance) of OSI elements versus their relative maturity; (2) Determine the anticipated level of self-sufficiency; (3) Define measurable milestone criteria; and (4) Result: Milestones for OSI readiness.

  20. Chinese Generation in a Spoken Dialogue Translation System Hua Wu, Taiyi Huang, Chengqing Zong and Bo Xu

    E-Print Network [OSTI]

    Chinese Generation in a Spoken Dialogue Translation System Hua Wu, Taiyi Huang, Chengqing Zong, Beijing 100080, China E-mail: {wh, huang, cqzong, xubo}@nlpr.ia.ac.cn Abstract: A Chinese generation module in a speech to speech dialogue translation system is presented here. The input of the generation

  1. Pollution Reduction System that Generates Profits (Cascading Closed Loop Cycle - CCLC) 

    E-Print Network [OSTI]

    Stinger, D. H.; Mian, F.

    2004-01-01

    Cleaning (FFGC) system can also be installed to eliminate any residual pollutants thereby returning pristine air to the environment. You can turn your planned pollution reduction system cost into a profit-generating power plant. Introduction... savings for a client will be $7.4 million assuming the average heat rate for utility plants of 10,200 btu/kw- hr(1) and a natural gas price of $6.00/MMBtu. Rather then generate additional power; the client could operate its power plant at reduced power...

  2. Electrode assemblies, plasma apparatuses and systems including electrode assemblies, and methods for generating plasma

    SciTech Connect (OSTI)

    Kong, Peter C; Grandy, Jon D; Detering, Brent A; Zuck, Larry D

    2013-09-17

    Electrode assemblies for plasma reactors include a structure or device for constraining an arc endpoint to a selected area or region on an electrode. In some embodiments, the structure or device may comprise one or more insulating members covering a portion of an electrode. In additional embodiments, the structure or device may provide a magnetic field configured to control a location of an arc endpoint on the electrode. Plasma generating modules, apparatus, and systems include such electrode assemblies. Methods for generating a plasma include covering at least a portion of a surface of an electrode with an electrically insulating member to constrain a location of an arc endpoint on the electrode. Additional methods for generating a plasma include generating a magnetic field to constrain a location of an arc endpoint on an electrode.

  3. DEVELOPMENT OF A METHODOLOGY TO ASSESS PROLIFERATION RESISTANCE AND PHYSICAL PROTECTION FOR GENERATION IV SYSTEMS

    SciTech Connect (OSTI)

    Nishimura, R.; Bari, R.; Peterson, P.; Roglans-Ribas, J.; Kalenchuk, D.

    2004-10-06

    Enhanced proliferation resistance and physical protection (PR&PP) is one of the technology goals for advanced nuclear concepts, such as Generation IV systems. Under the auspices of the Generation IV International Forum, the Office of Nuclear Energy, Science and Technology of the U.S. DOE, the Office of Nonproliferation Policy of the National Nuclear Security Administration, and participating organizations from six other countries are sponsoring an international working group to develop an evaluation methodology for PR&PP. This methodology will permit an objective PR&PP comparison between alternative nuclear systems (e.g., different reactor types or fuel cycles) and support design optimization to enhance robustness against proliferation, theft and sabotage. The paper summarizes the proposed assessment methodology including the assessment framework, measures used to express the PR&PP characteristics of the system, threat definition, system element and target identification, pathway identification and analysis, and estimation of the measures.

  4. Ionic Liquids for Utilization of Waste Heat from Distributed Power Generation Systems

    SciTech Connect (OSTI)

    Joan F. Brennecke; Mihir Sen; Edward J. Maginn; Samuel Paolucci; Mark A. Stadtherr; Peter T. Disser; Mike Zdyb

    2009-01-11

    The objective of this research project was the development of ionic liquids to capture and utilize waste heat from distributed power generation systems. Ionic Liquids (ILs) are organic salts that are liquid at room temperature and they have the potential to make fundamental and far-reaching changes in the way we use energy. In particular, the focus of this project was fundamental research on the potential use of IL/CO2 mixtures in absorption-refrigeration systems. Such systems can provide cooling by utilizing waste heat from various sources, including distributed power generation. The basic objectives of the research were to design and synthesize ILs appropriate for the task, to measure and model thermophysical properties and phase behavior of ILs and IL/CO2 mixtures, and to model the performance of IL/CO2 absorption-refrigeration systems.

  5. Extending and automating a Systems-Theoretic hazard analysis for requirements generation and analysis.

    SciTech Connect (OSTI)

    Thomas, John (Massachusetts Institute of Technology)

    2012-05-01

    Systems Theoretic Process Analysis (STPA) is a powerful new hazard analysis method designed to go beyond traditional safety techniques - such as Fault Tree Analysis (FTA) - that overlook important causes of accidents like flawed requirements, dysfunctional component interactions, and software errors. While proving to be very effective on real systems, no formal structure has been defined for STPA and its application has been ad-hoc with no rigorous procedures or model-based design tools. This report defines a formal mathematical structure underlying STPA and describes a procedure for systematically performing an STPA analysis based on that structure. A method for using the results of the hazard analysis to generate formal safety-critical, model-based system and software requirements is also presented. Techniques to automate both the analysis and the requirements generation are introduced, as well as a method to detect conflicts between the safety and other functional model-based requirements during early development of the system.

  6. Hydrogen generation systems and methods utilizing sodium silicide and sodium silica gel materials

    DOE Patents [OSTI]

    Wallace, Andrew P.; Melack, John M.; Lefenfeld, Michael

    2015-08-11

    Systems, devices, and methods combine thermally stable reactant materials and aqueous solutions to generate hydrogen and a non-toxic liquid by-product. The reactant materials can sodium silicide or sodium silica gel. The hydrogen generation devices are used in fuels cells and other industrial applications. One system combines cooling, pumping, water storage, and other devices to sense and control reactions between reactant materials and aqueous solutions to generate hydrogen. Springs and other pressurization mechanisms pressurize and deliver an aqueous solution to the reaction. A check valve and other pressure regulation mechanisms regulate the pressure of the aqueous solution delivered to the reactant fuel material in the reactor based upon characteristics of the pressurization mechanisms and can regulate the pressure of the delivered aqueous solution as a steady decay associated with the pressurization force. The pressure regulation mechanism can also prevent hydrogen gas from deflecting the pressure regulation mechanism.

  7. The role of convective geothermal systems in the generation, migration, and entrapment of oil

    SciTech Connect (OSTI)

    Hulen, J.B. [Univ. of Utah Research Institute, Salt Lake City, UT (United States)

    1995-06-01

    Modern convective geothermal systems (for example, at Yellowstone National Park) and their fossil equivalents, epithermal mineral deposits (like McLaughlin, California) have traditionally been considered poor petroleum prospects. The concentrated heat which drives these systems is commonly viewed as a negative influence: in other words, any oil initially present in or generated by these systems is quickly degraded to a useless carbonaceous residue. This is true in extreme cases, but numerous examples from the Great Basin, the northern California Coast Ranges, and elsewhere suggest that under certain circumstances, geothermal systems can efficiently generate, transport, and entrap significant quantities of producible petroleum. B.R.T. Simoneit has shown that oil can be hydrothermally generated in an {open_quotes} instant{close_quotes} of geologic time. It follows, then, that away from geothermal systems` high-temperature centers (or in wholly moderate-temperature systems), the encompassing shallow thermal anomalies can distill large volumes of oil from otherwise immature hydrocarbon source rocks. Transport of this newly-generated oil is enhanced by the buoyant upwelling of heated aqueous fluid. Porosity for oil transport and storage is created or increased by hydrothermal dissolution of rock-forming or secondary silicates and carbonates. Finally, geothermal {open_quotes}self-sealing{close_quotes} -- the deposition of secondary minerals (especially silica and clay) at the margins of a system -- can provide a very effective hydrocarbon seal. Lee Allison has noted the coincidence of igneous intrusions and oil reservoirs in Nevada. It is suggested that here and elsewhere, both igneous-related and amagmatic geothermal systems in otherwise favorable settings should be viewed as prime petroleum exploration targets.

  8. Integrated circuit mask generation using a raster scanned laser trimming system 

    E-Print Network [OSTI]

    Gourley, Kevin Dwayne

    1982-01-01

    and developed . for the production of integrated circuit master reticles. The novelty of this approach is the use of a commercial Nd:YAG laser trimming system as a raster scanning laser reticle generator. A previous method employing an ESI Model 44 Laser... Integrated Circuit Mask Making), supports designs of even very large scale integration (VLSI) complexities. Low cost and high versatility makes the use of a commercial laser trimmer as a mask gener ation system very attractive for research applications...

  9. The development of a solar thermal water purification, heating, and power generation system: A case study.

    E-Print Network [OSTI]

    Wu, Mingshen

    The development of a solar thermal water purification, heating, and power generation system: A case parabolic solar troughs. A flow control valve adjustable for temperature and pressure, allowed the pressure within the troughs to build, thus increasing the boiling point of the water. At a temperature greater

  10. Steady flow generation in microcirculatory systems{ Javier Atencia and David J. Beebe*

    E-Print Network [OSTI]

    Beebe, David J.

    viscous drag and centrifugal force to achieve pumping. Experiments using single loop and double loop configurations via the use of disc pumps. The disc pump consists of a flat rotating disc and utilizes both microfluidic systems are presented to characterize the disc pump. Continuous flow generated by the disc pumps

  11. Mathematical Modeling of Flow-Generated Forces in an In Vitro System of Cardiac Valve Development

    E-Print Network [OSTI]

    Weidner, John W.

    Mathematical Modeling of Flow-Generated Forces in an In Vitro System of Cardiac Valve Development) Abstract--Heart valve defects are the most common cardiac defects. Therefore, defining the mechanisms of cardiac valve development is critical to our understanding and treatment of these disorders. At early

  12. 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

  13. Wind Turbine Generator System Safety and Function Test Report for the Entegrity EW50 Wind Turbine

    SciTech Connect (OSTI)

    Smith, J.; Huskey, A.; Jager, D.; Hur, J.

    2012-11-01

    This report summarizes the results of a safety and function test that NREL conducted on the Entegrity EW50 wind turbine. This test was conducted in accordance with the International Electrotechnical Commissions' (IEC) standard, Wind Turbine Generator System Part 2: Design requirements for small wind turbines, IEC 61400-2 Ed.2.0, 2006-03.

  14. Wind Turbine Generator System Safety and Function Test Report for the Ventera VT10 Wind Turbine

    SciTech Connect (OSTI)

    Smith, J.; Huskey, A.; Jager, D.; Hur, J.

    2012-11-01

    This report summarizes the results of a safety and function test that NREL conducted on the Ventera VT10 wind turbine. This test was conducted in accordance with the International Electrotechnical Commissions' (IEC) standard, Wind Turbine Generator System Part 2: Design requirements for small wind turbines, IEC 61400-2 Ed.2.0, 2006-03.

  15. 3D heterogeneous systems are a key to the next generation of electronics

    E-Print Network [OSTI]

    Rogers, John A.

    3D heterogeneous systems are a key to the next generation of electronics Researchers of substrate, including lightweight, flexible plastic sheets. Circuits built in this way offer electrical-based approaches to electronics. The invention of the transistor was considered by many to be one of the greatest

  16. Low-Cost Packaged CHP System with Reduced Emissions- Presentation by Cummins Power Generation, June 2011

    Broader source: Energy.gov [DOE]

    Presentation on 330 kWe Packaged CHP System with Reduced Emissions, given by John Pendray of Cummins Power Generation, at the U.S. DOE Industrial Distributed Energy Portfolio Review Meeting in Washington, D.C. on June 1-2, 2011.

  17. Next Generation Nuclear Plant Structures, Systems, and Components Safety Classification White Paper

    SciTech Connect (OSTI)

    Pete Jordan

    2010-09-01

    This white paper outlines the relevant regulatory policy and guidance for a risk-informed approach for establishing the safety classification of Structures, Systems, and Components (SSCs) for the Next Generation Nuclear Plant and sets forth certain facts for review and discussion in order facilitate an effective submittal leading to an NGNP Combined Operating License application under 10 CFR 52.

  18. A System Dynamics Study of Carbon Cycling and Electricity Generation from Energy Crops

    E-Print Network [OSTI]

    Ford, Andrew

    Energy Information Administration GHG Green House Gasses GORCAM Graz-Oak Ridge Carbon Accounting Model1 A System Dynamics Study of Carbon Cycling and Electricity Generation from Energy Crops Hilary calling for a cap-and- trade program, was reintroduced in the United States Senate this year. The Energy

  19. Future Generation Computer Systems 25 (2009) 599616 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Melbourne, University of

    2009-01-01

    Future Generation Computer Systems 25 (2009) 599­616 Contents lists available at Science that computing will one day be the 5th utility (after water, electricity, gas, and telephony). This computing of harnessing `Storage Clouds' for high performance content delivery. Finally, we conclude with the need

  20. Performance Impact of Solar Gain on Photovoltaic Inverters and Utility-Scale Energy Generation Systems

    E-Print Network [OSTI]

    Performance Impact of Solar Gain on Photovoltaic Inverters and Utility-Scale Energy Generation of solar gain contributions. A novel solar gain utility-scale inverter model has been developed to characterize inverter efficiency with respect to solar resource, general ambient conditions and thermal system

  1. An Integrated Flywheel Energy Storage System with a Homopolar Inductor Motor/Generator and High-Frequency Drive

    E-Print Network [OSTI]

    Sanders, Seth

    An Integrated Flywheel Energy Storage System with a Homopolar Inductor Motor/Generator and High Flywheel Energy Storage System with a Homopolar Inductor Motor/Generator and High-Frequency Drive Copyright 2003 by Perry I-Pei Tsao #12;1 Abstract An Integrated Flywheel Energy Storage System with a Homopolar

  2. Process for generating electricity in a pressurized fluidized-bed combustor system

    DOE Patents [OSTI]

    Kasper, Stanley (Pittsburgh, PA)

    1991-01-01

    A process and apparatus for generating electricity using a gas turbine as part of a pressurized fluidized-bed combustor system wherein coal is fed as a fuel in a slurry in which other constituents, including a sulfur sorbent such as limestone, are added. The coal is combusted with air in a pressurized combustion chamber wherein most of the residual sulfur in the coal is captured by the sulfur sorbent. After particulates are removed from the flue gas, the gas expands in a turbine, thereby generating electric power. The spent flue gas is cooled by heat exchange with system combustion air and/or system liquid streams, and the condensate is returned to the feed slurry.

  3. Method and apparatus for improving the performance of a nuclear power electrical generation system

    DOE Patents [OSTI]

    Tsiklauri, Georgi V. (Richland, WA); Durst, Bruce M. (Kennewick, WA)

    1995-01-01

    A method and apparatus for improving the efficiency and performance a of nuclear electrical generation system that comprises the addition of steam handling equipment to an existing plant that results in a surprising increase in plant performance. More particularly, a gas turbine electrical generation system with heat recovery boiler is installed along with a high pressure and a low pressure mixer superheater. Depending upon plant characteristics, the existing moisture separator reheater (MSR) can be either augmented or done away with. The instant invention enables a reduction in T.sub.hot without a derating of the reactor unit, and improves efficiency of the plant's electrical conversion cycle. Coupled with this advantage is a possible extension of the plant's fuel cycle length due to an increased electrical conversion efficiency. The reduction in T.sub.hot further allows for a surprising extension of steam generator life. An additional advantage is the reduction in erosion/corrosion of secondary system components including turbine blades and diaphragms. The gas turbine generator used in the instant invention can also replace or augment existing peak or emergency power needs.

  4. Method and apparatus for steam mixing a nuclear fueled electricity generation system

    DOE Patents [OSTI]

    Tsiklauri, Georgi V. (Richland, WA); Durst, Bruce M. (Kennewick, WA)

    1996-01-01

    A method and apparatus for improving the efficiency and performance of a nuclear electrical generation system that comprises the addition of steam handling equipment to an existing plant that results in a surprising increase in plant performance. More particularly, a gas turbine electrical generation system with heat recovery boiler is installed along with a micro-jet high pressure and a low pressure mixer superheater. Depending upon plant characteristics, the existing moisture separator reheater (MSR) can be either augmented or done away with. The instant invention enables a reduction in T.sub.hot without a derating of the reactor unit, and improves efficiency of the plant's electrical conversion cycle. Coupled with this advantage is a possible extension of the plant's fuel cycle length due to an increased electrical conversion efficiency. The reduction in T.sub.hot further allows for a surprising extension of steam generator life. An additional advantage is the reduction in erosion/corrosion of secondary system components including turbine blades and diaphragms. The gas turbine generator used in the instant invention can also replace or augment existing peak or emergency power needs. Another benefit of the instant invention is the extension of plant life and the reduction of downtime due to refueling.

  5. A Multi-State Model for the Reliability Assessment of a Distributed Generation System via Universal Generating Function

    E-Print Network [OSTI]

    Boyer, Edmond

    renewable technology (e.g. wind or solar, etc.) whose behavior is described by a binary state, working of the renewable generator (e.g. solar generator, wind turbine, and electrical vehicle aggregation) State value Multiplication operator of u-functions Wind speed Total number of discretized wind speed states Discretized wind

  6. Tungsten-188/carrier-free rhenium-188 perrhenic acid generator system

    DOE Patents [OSTI]

    Knapp, F.F. Jr.; Lisic, E.C.; Mirzadeh, S.; Callahan, A.P.

    1994-01-04

    A generator system has been invented for providing a carrier-free radioisotope in the form of an acid comprises a chromatography column in tandem fluid connection with an ion exchange column, the chromatography column containing a charge of a radioactive parent isotope. The chromatography column, charged with a parent isotope, is eluted with an alkali metal salt solution to generate the radioisotope in the form of an intermediate solution, which is passed through the ion-exchange column to convert the radioisotope to a carrier-free acid form. 1 figure.

  7. Tungsten-188/carrier-free rhenium-188 perrhenic acid generator system

    DOE Patents [OSTI]

    Knapp, F.F. Jr.; Lisic, E.C.; Mirzadeh, S.; Callahan, A.P.

    1993-02-16

    A generator system for providing a carrier-free radioisotope in the form of an acid comprises a chromatography column in tandem fluid connection with an ion exchange column, the chromatography column containing a charge of a radioactive parent isotope. The chromatography column, charged with a parent isotope, is eluted with an alkali metal salt solution to generate the radioisotope in the form of an intermediate solution, which is passed through the ion-exchange column to convert the radioisotope to a carrier-free acid form.

  8. Tungsten-188/carrier-free rhenium-188 perrhenic acid generator system

    DOE Patents [OSTI]

    Knapp, Jr., Furn F. (Oak Ridge, TN); Lisic, Edward C. (Cookeville, TN); Mirzadeh, Saed (Knoxville, TN); Callahan, Alvin P. (Harriman, TN)

    1993-01-01

    A generator system for providing a carrier-free radioisotope in the form of an acid comprises a chromatography column in tandem fluid connection with an ion exchange column, the chromatography column containing a charge of a radioactive parent isotope. The chromatography column, charged with a parent isotope, is eluted with an alkali metal salt solution to generate the radioisotope in the form of an intermediate solution, which is passed through the ion-exchange column to convert the radioisotope to a carrier-free acid form.

  9. Tungsten-188/carrier-free rhenium-188 perrhenic acid generator system

    DOE Patents [OSTI]

    Knapp, Jr., Furn F. (Oak Ridge, TN); Lisic, Edward C. (Cookeville, TN); Mirzadeh, Saed (Knoxville, TN); Callahan, Alvin P. (Harriman, TN)

    1994-01-01

    A generator system for providing a carrier-free radioisotope in the form of an acid comprises a chromatography column in tandem fluid connection with an ion exchange column, the chromatography column containing a charge of a radioactive parent isotope. The chromatography column, charged with a parent isotope, is eluted with an alkali metal salt solution to generate the radioisotope in the form of an intermediate solution, which is passed through the ion-exchange column to convert the radioisotope to a carrier-free acid form.

  10. System and method for determining an ammonia generation rate in a three-way catalyst

    DOE Patents [OSTI]

    Sun, Min; Perry, Kevin L; Kim, Chang H

    2014-12-30

    A system according to the principles of the present disclosure includes a rate determination module, a storage level determination module, and an air/fuel ratio control module. The rate determination module determines an ammonia generation rate in a three-way catalyst based on a reaction efficiency and a reactant level. The storage level determination module determines an ammonia storage level in a selective catalytic reduction (SCR) catalyst positioned downstream from the three-way catalyst based on the ammonia generation rate. The air/fuel ratio control module controls an air/fuel ratio of an engine based on the ammonia storage level.

  11. Heat Transfer and Thermophotovoltaic Power Generation in Oil-fired Heating Systems

    SciTech Connect (OSTI)

    Butcher, T.; Hammonds, J.S.; Horne, E.; Kamath, B.; Carpenter, J.; Woods, D.R.

    2010-10-21

    The focus of this study is the production of electric power in an oil-fired, residential heatingsystem using thermophotovoltaic (TPV) conversion devices. This work uses experimental, computational, and analytical methods to investigate thermal mechanisms that drive electric power production in the TPV systems. An objective of this work is to produce results that will lead to the development of systems that generate enough electricity such that the boiler is self-powering. An important design constraint employed in this investigation is the use of conventional, yellow-flame oil burners, integrated with a typical boiler. The power production target for the systems developed here is 100 W - the power requirement for a boiler that uses low-power auxiliary components. The important heattransfer coupling mechanisms that drive power production in the systems studied are discussed. The results of this work may lead to the development of systems that export power to the home electric system.

  12. Cover and startup gas supply system for solid oxide fuel cell generator

    DOE Patents [OSTI]

    Singh, Prabhakar (Export, PA); George, Raymond A. (Pittsburgh, PA)

    1999-01-01

    A cover and startup gas supply system for a solid oxide fuel cell power generator is disclosed. Hydrocarbon fuel, such as natural gas or diesel fuel, and oxygen-containing gas are supplied to a burner. Combustion gas exiting the burner is cooled prior to delivery to the solid oxide fuel cell. The system mixes the combusted hydrocarbon fuel constituents with hydrogen which is preferably stored in solid form to obtain a non-explosive gas mixture. The system may be used to provide both non-explosive cover gas and hydrogen-rich startup gas to the fuel cell.

  13. Cover and startup gas supply system for solid oxide fuel cell generator

    DOE Patents [OSTI]

    Singh, P.; George, R.A.

    1999-07-27

    A cover and startup gas supply system for a solid oxide fuel cell power generator is disclosed. Hydrocarbon fuel, such as natural gas or diesel fuel, and oxygen-containing gas are supplied to a burner. Combustion gas exiting the burner is cooled prior to delivery to the solid oxide fuel cell. The system mixes the combusted hydrocarbon fuel constituents with hydrogen which is preferably stored in solid form to obtain a non-explosive gas mixture. The system may be used to provide both non-explosive cover gas and hydrogen-rich startup gas to the fuel cell. 4 figs.

  14. CALCULATION OF DEMONSTRATION BULK VITRIFICATION SYSTEM MELTER INLEAKAGE AND OFF-GAS GENERATION RATE

    SciTech Connect (OSTI)

    MAY TH

    2008-04-16

    The River Protection Project (RPP) mission is to safely store, retrieve, treat, immobilize, and dispose of the Hanford Site tank waste. The Demonstration Bulk Vitrification System (DBVS) is a research and development project whose objective is to demonstrate the suitability of Bulk Vitrification treatment technology waste form for disposing of low-activity waste from the Tank Farms. The objective of this calculation is to determine the DBVS melter inleakage and off-gas generation rate based on full scale testing data from 38D. This calculation estimates the DBVS melter in leakage and gas generation rate based on test data. Inleakage is estimated before the melt was initiated, at one point during the melt, and at the end of the melt. Maximum gas generation rate is also estimated.

  15. Wind turbine generators having wind assisted cooling systems and cooling methods

    DOE Patents [OSTI]

    Bagepalli, Bharat (Niskayuna, NY); Barnes, Gary R. (Delanson, NY); Gadre, Aniruddha D. (Rexford, NY); Jansen, Patrick L. (Scotia, NY); Bouchard, Jr., Charles G. (Schenectady, NY); Jarczynski, Emil D. (Scotia, NY); Garg, Jivtesh (Cambridge, MA)

    2008-09-23

    A wind generator includes: a nacelle; a hub carried by the nacelle and including at least a pair of wind turbine blades; and an electricity producing generator including a stator and a rotor carried by the nacelle. The rotor is connected to the hub and rotatable in response to wind acting on the blades to rotate the rotor relative to the stator to generate electricity. A cooling system is carried by the nacelle and includes at least one ambient air inlet port opening through a surface of the nacelle downstream of the hub and blades, and a duct for flowing air from the inlet port in a generally upstream direction toward the hub and in cooling relation to the stator.

  16. Regulatory Concerns on the In-Containment Water Storage System of the Korean Next Generation Reactor

    SciTech Connect (OSTI)

    Ahn, Hyung-Joon; Lee, Jae-Hun; Bang, Young-Seok; Kim, Hho-Jung

    2002-07-15

    The in-containment water storage system (IWSS) is a newly adopted system in the design of the Korean Next Generation Reactor (KNGR). It consists of the in-containment refueling water storage tank, holdup volume tank, and cavity flooding system (CFS). The IWSS has the function of steam condensation and heat sink for the steam release from the pressurizer and provides cooling water to the safety injection system and containment spray system in an accident condition and to the CFS in a severe accident condition. With the progress of the KNGR design, the Korea Institute of Nuclear Safety has been developing Safety and Regulatory Requirements and Guidances for safety review of the KNGR. In this paper, regarding the IWSS of the KNGR, the major contents of the General Safety Criteria, Specific Safety Requirements, Safety Regulatory Guides, and Safety Review Procedures were introduced, and the safety review items that have to be reviewed in-depth from the regulatory viewpoint were also identified.

  17. Renewable build-up pathways for the US: Generation costs are not system costs

    E-Print Network [OSTI]

    Becker, Sarah; Andresen, Gorm B; Jacobson, Mark Z; Schramm, Stefan; Greiner, Martin

    2014-01-01

    The transition to a future electricity system based primarily on wind and solar PV is examined for all regions in the contiguous US. We present optimized pathways for the build-up of wind and solar power for least backup energy needs as well as for least cost obtained with a simplified, lightweight model based on long-term high resolution weather-determined generation data. In the absence of storage, the pathway which achieves the best match of generation and load, thus resulting in the least backup energy requirements, generally favors a combination of both technologies, with a wind/solar PV energy mix of about 80/20 in a fully renewable scenario. The least cost development is seen to start with 100% of the technology with the lowest average generation costs first, but with increasing renewable installations, economically unfavorable excess generation pushes it toward the minimal backup pathway. Surplus generation and the entailed costs can be reduced significantly by combining wind and solar power, and/or a...

  18. Renewable Energy Requirements for Future Building Codes: Energy Generation and Economic Analysis

    SciTech Connect (OSTI)

    Russo, Bryan J.; Weimar, Mark R.; Dillon, Heather E.

    2011-09-30

    As the model energy codes are improved to reach efficiency levels 50 percent greater than current codes, installation of on-site renewable energy generation is likely to become a code requirement. This requirement will be needed because traditional mechanisms for code improvement, including the building envelope, mechanical systems, and lighting, have been maximized at the most cost-effective limit.

  19. Evaluating the energy performance of the first generation of LEED-certified commercial buildings

    E-Print Network [OSTI]

    Diamond, Rick

    2011-01-01

    available for on-site renewable energy (n=3), additionaland EA-c2 (on-site renewable energy) complicate our analysisemploys on-site renewable energy systems in the design case,

  20. TRIFID (TRansuranic Isotopic Fraction Interrogation Device): A second generation plutonium isotopic analysis system

    SciTech Connect (OSTI)

    Fleissner, J G; Coressel, T W; Freier, D A; Macklin, L L

    1989-01-01

    The TRIFID (Transuranic Isotopic Fraction Interrogation Device) system is a second generation plutonium isotopic analysis system which incorporates many new and unique features in the area of isotopic data acquisition and isotopic analysis instrument consisting of a Canberra Series 95-MCA interfaced to a Compaq 386 computer. The entire TRIFID software package, including MCA communications and isotopic analysis routines, was developed using the C programming language. Extensive use has been made of user friendly screens and menus for ease of operation and training and to facilitate use by technical level operators. Automated TRIFID features provide for MCA/ADC setup and acquisition, spectral storage, isotopic analysis, and report generation. One unique feature of the TRIFID system design allows it to be pre-programed for an entire day's counting. The isotopic analysis module (EPICS) contains an expert system formalism which is used to detect and assay for spectral interferences, and to automatically adjust peak fitting constraints based on spectral intensity variations. A TRIFID system has been in operation in a production laboratory at the Rocky Flats Plant since September 1988. Marked decreases in training and hands-on operation time have been achieved in comparison to the older, preceding isotopic systems. 2 refs., 3 figs.

  1. On-Site Notaries Public * Name Location Phone

    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 Administration wouldMass mapSpeeding access toOctober 1996Technologies / Ombudsman OmbudsmanOn thetheOn-Site

  2. Voluntary Protection Program On-site Evaluations | Department of Energy

    Energy Savers [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 APPENDIX E LIST OF APPLICABLEStatutoryinEnableVisualization & ControlsforEnergy-On-site

  3. Integration and operation of post-combustion capture system on coal-fired power generation: load following and peak power

    E-Print Network [OSTI]

    Brasington, Robert David, S.M. Massachusetts Institute of Technology

    2012-01-01

    Coal-fired power plants with post combustion capture and sequestration (CCS) systems have a variety of challenges to integrate the steam generation, air quality control, cooling water systems and steam turbine with the ...

  4. On the Use of Automatically Generated Discourse-Level Information in a Concept-to-Speech Synthesis System 

    E-Print Network [OSTI]

    Hitzeman, Janet; Black, Alan W; Taylor, Paul; Mellish, Chris; Oberlander, Jon

    This paper describes the latest version of the SOLE concept-to-speech system, which uses linguistic information provided by a natural language generation system to improve the prosody of synthetic speech. We discuss the ...

  5. Onsite Distributed Generation Systems For Laboratories, Laboratories for the 21st Century: Best Practices (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-09-01

    This guide provides general information on implementing onsite distributed generation systems in laboratory environments. Specific technology applications, general performance information, and cost data are provided to educate and encourage laboratory energy managers to consider onsite power generation or combined heat and power (CHP) systems for their facilities. After conducting an initial screening, energy managers are encouraged to conduct a detailed feasibility study with actual cost and performance data for technologies that look promising. Onsite distributed generation systems are small, modular, decentralized, grid-connected, or off-grid energy systems. These systems are located at or near the place where the energy is used. These systems are also known as distributed energy or distributed power systems. DG technologies are generally considered those that produce less than 20 megawatts (MW) of power. A number of technologies can be applied as effective onsite DG systems, including: (1) Diesel, natural gas, and dual-fuel reciprocating engines; (2) Combustion turbines and steam turbines; (3) Fuel cells; (4) Biomass heating; (5) Biomass combined heat and power; (6) Photovoltaics; and (7) Wind turbines. These systems can provide a number of potential benefits to an individual laboratory facility or campus, including: (1) High-quality, reliable, and potentially dispatchable power; (2) Low-cost energy and long-term utility cost assurance, especially where electricity and/or fuel costs are high; (3) Significantly reduced greenhouse gas (GHG) emissions. Typical CHP plants reduce onsite GHG by 40 to 60 percent; (4) Peak demand shaving where demand costs are high; (5) CHP where thermal energy can be used in addition to electricity; (6) The ability to meet standby power needs, especially where utility-supplied power is interrupted frequently or for long periods and where standby power is required for safety or emergencies; and (7) Use for standalone or off-grid systems where extending the grid is too expensive or impractical. Because they are installed close to the load, DG systems avoid some of the disadvantages of large, central power plants, such as transmission and distribution losses over long electric lines.

  6. SULFUR REMOVAL FROM PIPE LINE NATURAL GAS FUEL: APPLICATION TO FUEL CELL POWER GENERATION SYSTEMS

    SciTech Connect (OSTI)

    King, David L.; Birnbaum, Jerome C.; Singh, Prabhakar

    2003-11-21

    Pipeline natural gas is being considered as the fuel of choice for utilization in fuel cell-based distributed generation systems because of its abundant supply and the existing supply infrastructure (1). For effective utilization in fuel cells, pipeline gas requires efficient removal of sulfur impurities (naturally occurring sulfur compounds or sulfur bearing odorants) to prevent the electrical performance degradation of the fuel cell system. Sulfur odorants such as thiols and sulfides are added to pipeline natural gas and to LPG to ensure safe handling during transportation and utilization. The odorants allow the detection of minute gas line leaks, thereby minimizing the potential for explosions or fires.

  7. A Hierarchical Control Algorithm for Managing Electrical Energy Storage Systems in Homes Equipped with PV Power Generation

    E-Print Network [OSTI]

    Pedram, Massoud

    A Hierarchical Control Algorithm for Managing Electrical Energy Storage Systems in Homes Equipped with PV Power Generation Yanzhi Wang, Siyu Yue, and Massoud Pedram Department of Electrical Engineering}@sharplabs.com Abstract-- Integrating residential-level photovoltaic (PV) power generation and energy storage systems

  8. Assessment of effectiveness of geologic isolation systems. CIRMIS data system. Volume 3. Generator routines

    SciTech Connect (OSTI)

    Friedrichs, D.R.; Argo, R.S.

    1980-01-01

    The Assessment of Effectiveness of Geologic Isolation Systems (AEGIS) Program is developing and applying the methodology for assessing the far-field, long-term post-closure safety of deep geologic nuclear waste repositories. AEGIS is being performed by Pacific Northwest Laboratory (PNL) under contract with the Office of Nuclear Waste Isolation (ONWI) for the Department of Energy (DOE). One task within AEGIS is the development of methodology for analysis of the consequences (water pathway) from loss of repository containment as defined by various release scenarios. The various input parameters required in the analysis are compiled in data systems. The data are organized and prepared by various input subroutines for utilization by the hydraulic and transport codes. The hydrologic models simulate the groundwater flow systems and provide water flow directions, rates, and velocities as inputs to the transport models. Outputs from the transport models are basically graphs of radionuclide concentration in the groundwater plotted against time. After dilution in the receiving surface-water body (e.g., lake, river, bay), these data are the input source terms for the dose models, if dose assessments are required. The dose models calculate radiation dose to individuals and populations. CIRMIS (Comprehensive Information Retrieval and Model Input Sequence) Data System, a storage and retrieval system for model input and output data, including graphical interpretation and display is described. This is the third of four volumes of the description of the CIRMIS Data System.

  9. Transacting generation attributes across market boundaries: Compatible information systems and the treatment of imports and exports

    SciTech Connect (OSTI)

    Grace, Robert; Wiser, Ryan

    2002-11-01

    Voluntary markets for ''green'' power, and mandatory policies such as fuel source disclosure requirements and renewables portfolio standards, each rely on the ability to differentiate electricity by the ''attributes'' of the generation. Throughout North America, electricity markets are devising accounting and verification systems for generation ''attributes'': those characteristics of a power plant's production such as fuel source and emissions that differentiate it from undifferentiated (or ''commodity'') electricity. These accounting and verification systems are intended to verify compliance with market mandates, create accurate disclosure labels, substantiate green power claims, and support emissions markets. Simultaneously, interest is growing in transacting (importing or exporting) generation attributes across electricity market borders, with or without associated electricity. Cross-border renewable attribute transactions have advantages and disadvantages. Broad access to markets may encourage more renewable generation at lower cost, but this result may conflict with desires to assure that at least some renewable resources are built locally to achieve either local policy goals or purchaser objectives. This report is intended to serve as a resource document for those interested in and struggling with cross-border renewable attribute transactions. The report assesses the circumstances under which renewable generation attributes from a ''source'' region might be recognized in a ''sink'' region. The report identifies several distinct approaches that might be used to account for and verify attribute import and export transactions, and assesses the suitability of these alternative approaches. Because policymakers have often made systems ''compatibility'' between market areas a pre-requisite to allowing cross-border renewable transactions, this report develops criteria for ''compatible information systems.'' Where fully compatible information systems do not exist, certain cross-border attribute transactions may still be deemed suitably credible and verifiable to be recognized; this report also identifies possible criteria for such ''compatible transactions.'' The importance of credibly addressing imports and exports of renewable energy attributes should be evident. A lack of clarity as to what generation can and cannot be recognized in various markets can paralyze investment in and contracting for renewable generation. The development of rules for imports and exports will also minimize the potential for ''double counting'' of renewable energy attributes, will help define where and at what cost renewable plants will be built, and will directly impact the location of the benefits that renewable generation provides. This report ultimately concludes that the ''correct'' approach to treating renewable energy imports and exports depends on the context and motivations behind the transaction or the mandate, and that the presence of practical constraints or multiple objectives of ten make selecting the best approach difficult. That said, the report urges those creating market rules to move quickly in defining valid cross-border transaction structures and to consider the implications of their decisions on the creation of viable markets for new renewable generation.

  10. The On-Site Analysis of the Cherenkov Telescope Array

    E-Print Network [OSTI]

    Bulgarelli, Andrea; Zoli, Andrea; Aboudan, Alessio; Rodríguez-Vázquez, Juan José; De Cesare, Giovanni; De Rosa, Adriano; Maier, Gernot; Lyard, Etienne; Bastieri, Denis; Lombardi, Saverio; Tosti, Gino; Bergamaschi, Sonia; Beneventano, Domenico; Lamanna, Giovanni; Jacquemier, Jean; Kosack, Karl; Antonelli, Lucio Angelo; Boisson, Catherine; Borkowski, Jerzy; Buson, Sara; Carosi, Alessandro; Conforti, Vito; Colomé, Pep; Reyes, Raquel de los; Dumm, Jon; Evans, Phil; Fortson, Lucy; Fuessling, Matthias; Gotz, Diego; Graciani, Ricardo; Gianotti, Fulvio; Grandi, Paola; Hinton, Jim; Humensky, Brian; Inoue, Susumu; Knödlseder, Jürgen; Flour, Thierry Le; Lindemann, Rico; Malaguti, Giuseppe; Markoff, Sera; Marisaldi, Martino; Neyroud, Nadine; Nicastro, Luciano; Ohm, Stefan; Osborne, Julian; Oya, Igor; Rodriguez, Jerome; Rosen, Simon; Ribo, Marc; Tacchini, Alessandro; Schüssler, Fabian; Stolarczyk, Thierry; Torresi, Eleonora; Testa, Vincenzo; Wegner, Peter

    2015-01-01

    The Cherenkov Telescope Array (CTA) observatory will be one of the largest ground-based very high-energy gamma-ray observatories. The On-Site Analysis will be the first CTA scientific analysis of data acquired from the array of telescopes, in both northern and southern sites. The On-Site Analysis will have two pipelines: the Level-A pipeline (also known as Real-Time Analysis, RTA) and the level-B one. The RTA performs data quality monitoring and must be able to issue automated alerts on variable and transient astrophysical sources within 30 seconds from the last acquired Cherenkov event that contributes to the alert, with a sensitivity not worse than the one achieved by the final pipeline by more than a factor of 3. The Level-B Analysis has a better sensitivity (not be worse than the final one by a factor of 2) and the results should be available within 10 hours from the acquisition of the data: for this reason this analysis could be performed at the end of an observation or next morning. The latency (in part...

  11. Control and Optimization of Power Systems with Renewables: Voltage Regulation and Generator Dispatch

    E-Print Network [OSTI]

    Zhang, Baosen

    2013-01-01

    4 Generator Dispatch 4.1 ProblemRegulation . . . . . . .1.1.3 Generator Dispatch . . . .Regulation . . . . 1.2.3 Generator Dispatch . . . . 1.3 Our

  12. Resolution Improvement and Pattern Generator Development for the Maskless Micro-Ion-Beam Reduction Lithography System

    E-Print Network [OSTI]

    Jiang, Ximan

    2006-01-01

    apertures of the pattern generator has been simulated in atracing code. New pattern generator design has been proposedfabricated pattern generator. Professor Ka-Ngo Leung Nuclear

  13. Power System Modeling of 20percent Wind-Generated Electricity by 2030

    E-Print Network [OSTI]

    Hand, Maureen

    2008-01-01

    selected to achieve a cost-optimal generation mix over a 20-Conventional Generation Technology Cost and Performancethe future cost and performance of conventional generation

  14. Advanced Soldier Thermoelectric Power System for Power Generation from Battlefield Heat Sources

    SciTech Connect (OSTI)

    Hendricks, Terry J.; Hogan, Tim; Case, Eldon D.; Cauchy, Charles J.

    2010-09-01

    The U.S. military uses large amounts of fuel during deployments and battlefield operations. This project sought to develop a lightweight, small form-factor, soldier-portable advanced thermoelectric (TE) system prototype to recover and convert waste heat from various deployed military equipment (i.e., diesel generators/engines, incinerators, vehicles, and potentially mobile kitchens), with the ultimate purpose of producing power for soldier battery charging, advanced capacitor charging, and other battlefield power applications. The technical approach employed microchannel technology, a unique “power panel” approach to heat exchange/TE system integration, and newly-characterized LAST (lead-antimony-silver-telluride) and LASTT (lead-antimony-silver-tin-telluride) TE materials segmented with bismuth telluride TE materials in designing a segmented-element TE power module and system. This project researched never-before-addressed system integration challenges (thermal expansion, thermal diffusion, electrical interconnection, thermal and electrical interfaces) of designing thin “power panels” consisting of alternating layers of thin, microchannel heat exchangers (hot and cold) sandwiching thin, segmented-element TE power generators. The TE properties, structurally properties, and thermal fatigue behavior of LAST and LASTT materials were developed and characterized such that the first segmented-element TE modules using LAST / LASTT materials were fabricated and tested at hot-side temperatures = 400 °C and cold-side temperatures = 40 °C. LAST / LASTT materials were successfully segmented with bismuth telluride and electrically interconnected with diffusion barrier materials and copper strapping within the module electrical circuit. A TE system design was developed to produce 1.5-1.6 kW of electrical energy using these new TE modules from the exhaust waste heat of 60-kW Tactical Quiet Generators as demonstration vehicles.

  15. Simulation of one-minute power output from utility-scale photovoltaic generation systems.

    SciTech Connect (OSTI)

    Stein, Joshua S.; Ellis, Abraham; Hansen, Clifford W.

    2011-08-01

    We present an approach to simulate time-synchronized, one-minute power output from large photovoltaic (PV) generation plants in locations where only hourly irradiance estimates are available from satellite sources. The approach uses one-minute irradiance measurements from ground sensors in a climatically and geographically similar area. Irradiance is translated to power using the Sandia Array Performance Model. Power output is generated for 2007 in southern Nevada are being used for a Solar PV Grid Integration Study to estimate the integration costs associated with various utility-scale PV generation levels. Plant designs considered include both fixed-tilt thin-film, and single-axis-tracked polycrystalline Si systems ranging in size from 5 to 300 MW{sub AC}. Simulated power output profiles at one-minute intervals were generated for five scenarios defined by total PV capacity (149.5 MW, 222 WM, 292 MW, 492 MW, and 892 MW) each comprising as many as 10 geographically separated PV plants.

  16. Multiple layer optical memory system using second-harmonic-generation readout

    DOE Patents [OSTI]

    Boyd, Gary T. (Woodbury, MN); Shen, Yuen-Ron (Berkeley, CA)

    1989-01-01

    A novel optical read and write information storage system is described which comprises a radiation source such as a laser for writing and illumination, the radiation source being capable of radiating a preselected first frequency; a storage medium including at least one layer of material for receiving radiation from the radiation source and capable of being surface modified in response to said radiation source when operated in a writing mode and capable of generating a pattern of radiation of the second harmonic of the preselected frequency when illuminated by the radiation source at the preselected frequency corresponding to the surface modifications on the storage medium; and a detector to receive the pattern of second harmonic frequency generated.

  17. Power System Modeling of 20percent Wind-Generated Electricity by 2030

    SciTech Connect (OSTI)

    Bolinger, Mark A; Hand, Maureen; Blair, Nate; Bolinger, Mark; Wiser, Ryan; Hern, Tracy; Miller, Bart; O'Connell, R.

    2008-06-09

    The Wind Energy Deployment System model was used to estimate the costs and benefits associated with producing 20% of the nation's electricity from wind technology by 2030. This generation capacity expansion model selects from electricity generation technologies that include pulverized coal plants, combined cycle natural gas plants, combustion turbine natural gas plants, nuclear plants, and wind technology to meet projected demand in future years. Technology cost and performance projections, as well as transmission operation and expansion costs, are assumed. This study demonstrates that producing 20% of the nation's projected electricity demand in 2030 from wind technology is technically feasible, not cost-prohibitive, and provides benefits in the forms of carbon emission reductions, natural gas price reductions, and water savings.

  18. Forced generation of simple and double emulsions in all-aqueous system

    E-Print Network [OSTI]

    Sauret, Alban; 10.1063/1.3702434

    2012-01-01

    We report an easy-to-implement method that allows the direct generation of water-in-water (w/w) single emulsions. The method relies on direct perturbation of the pressure that drives the flow of the dispersed phase of the emulsions. The resultant inner jet is induced to break up into droplets due to the growth of the perturbation through Rayleigh-Plateau instability [L. Rayleigh, Proc. R. Soc. London 29, 71-97 (1879)]; this leads to the formation of monodisperse droplets. By implementing this method on a modified microfluidic device, we directly generate water-in-water-in-water (w/w/w) double emulsions with good control over the size and the number of encapsulated droplets. Our approach suggests a new route to apply droplet-based microfluidics to completely water-based systems.

  19. Japanese RDF-fired power generation system and fundamental research on RDF combustion

    SciTech Connect (OSTI)

    Narukawa, Kimihito; Goto, Hidenori; Chen, Y.; Yamazaki, Ryouhei; Moi, Shiegkatsu; Fujima, Yukihisa; Hirama, Toshimasa; Hosoda, Hideo

    1997-12-31

    Power generation from refuse derived fuel (RDF) is one of the new technologies for municipal solid waste (MSW) management. This technology is strongly attracting the attention of the Japanese government. The results of a feasibility study of this system in Japan is presented. To develop this highly efficient RDF-fired CFB generating process, combustibility and dechlorination characteristics of RDF were investigated by both the thermo-balance technique and combustion tests with an electric furnace. RDF combustion tests by a bench scale CFBC were carried out and then the following experimental results were obtained: (1) RDF can be combusted almost completely even in small scale CFBC; (2) HCl and N{sub 2}O emissions are quite low at any conditions; and (3) NO{sub x} emissions are a little higher in single stage combustion, however they are reduced at 50% air bias ratio. Some of the results can be explained by a RDF combustion model.

  20. University of Delaware Technical Analysis for On-Site Wind Generation

    E-Print Network [OSTI]

    Firestone, Jeremy

    at the identified wind turbine locations and subsequent foundation design. #12;Final Report ­ Technical Analysis.3 TERRAIN AND ROUGHNESS MAPS 12 2.4 RESOURCE GRID 13 2.5 WIND TURBINE POWER CURVE 14 2.6 SUMMMARY OF MODEL-LEWES ELECTRICITY DATA 19 3.2 NET METERING 19 3.3 USAGE AND RATES 20 3.4 WHOLESALE POWER SALES 22 3.5 WIND DATA 25 3

  1. On-Site Generation Simulation with EnergyPlus for Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael; Firestone, Ryan; Curtil, Dimitri; Marnay, Chris

    2006-01-01

    http://tariffs.lbl.gov/ NSTAR electricity rates, http://expensive than volumetric electricity rates, DG may still beutilities NSTAR (NSTAR electricity rates) and Keyspan (

  2. On-Site Generation Simulation with EnergyPlus for Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael; Firestone, Ryan; Curtil, Dimitri; Marnay, Chris

    2006-01-01

    Steps towards an Enhanced EnergyPlus Tool Figure 8.Enhanced EnergyPlus Tool References Crawley, D. B. ,et al. “EnergyPlus: An Update. ” Proceedings of SimBuild

  3. On-Site Generation Simulation with EnergyPlus for Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael; Firestone, Ryan; Curtil, Dimitri; Marnay, Chris

    2006-01-01

    Efficiency and Renewable Energy, Distributed Energy ProgramEfficiency and Renewable Energy, Distributed Energy Program

  4. Guide to purchasing green power. Renewable electricity, renewable energy certificates and on-site renewable generation

    SciTech Connect (OSTI)

    2004-09-30

    The Guide to Purchasing Green Power is intended for organizations that are considering the merits of buying green power as well as those that have decided to buy it and want help doing so. The Guide was written for a broad audience, including businesses, government agencies, universities, and all organizations wanting to diversify their energy supply and to reduce the environmental impact of their electricity use.The Guide provides an overview of green power markets and describes the necessary steps to buying green power. This section summarizes the Guide to help readers find the information they need.

  5. Adapting On-Site Electrical Generation Platforms for Producer Gas - Fact

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

    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 GasAdjustmentsShirleyEnergyTher i n c i p a l De p u t y A s sconveyance(EPACT)SpringDOE during the DOESheet,

  6. Guide to Purchasing Green Power: Renewable Electricity, Renewable Energy Certificates, and On-Site Renewable Generation

    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,ExecutiveFinancing Programs | Department ofIntegrating Purchasing Green Power

  7. DEVELOPMENT OF RISK-BASED AND TECHNOLOGY-INDEPENDENT SAFETY CRITERIA FOR GENERATION IV SYSTEMS

    SciTech Connect (OSTI)

    William E. Kastenberg; Edward Blandford; Lance Kim

    2009-03-31

    This project has developed quantitative safety goals for Generation IV (Gen IV) nuclear energy systems. These safety goals are risk based and technology independent. The foundations for a new approach to risk analysis has been developed, along with a new operational definition of risk. This project has furthered the current state-of-the-art by developing quantitative safety goals for both Gen IV reactors and for the overall Gen IV nuclear fuel cycle. The risk analysis approach developed will quantify performance measures, characterize uncertainty, and address a more comprehensive view of safety as it relates to the overall system. Appropriate safety criteria are necessary to manage risk in a prudent and cost-effective manner. This study is also important for government agencies responsible for managing, reviewing, and for approving advanced reactor systems because they are charged with assuring the health and safety of the public.

  8. Next generation hyper-scale software and hardware systems for big data analytics

    E-Print Network [OSTI]

    CERN. Geneva

    2013-01-01

    Building on foundational technologies such as many-core systems, non-volatile memories and photonic interconnects, we describe some current technologies and future research to create real-time, big data analytics, IT infrastructure. We will also briefly describe some of our biologically-inspired software and hardware architecture for creating radically new hyper-scale cognitive computing systems. About the speaker Rich Friedrich is the director of Strategic Innovation and Research Services (SIRS) at HP Labs. In this strategic role, he is responsible for research investments in nano-technology, exascale computing, cyber security, information management, cloud computing, immersive interaction, sustainability, social computing and commercial digital printing. Rich's philosophy is to fuse strategy and inspiration to create compelling capabilities for next generation information devices, systems and services. Using essential insights gained from the metaphysics of innnovation, he effectively leads ...

  9. System and method for generating current by selective minority species heating

    DOE Patents [OSTI]

    Fisch, Nathaniel J. (Princeton, NJ)

    1983-01-01

    A system for the generation of toroidal current in a plasma which is prepared in a toroidal magnetic field. The system utilizes the injection of low-frequency waves into the plasma by means of phased antenna arrays or phased waveguide arrays. The plasma is prepared with a minority ion species of different charge state and different gyrofrequency from the majority ion species. The wave frequency and wave phasing are chosen such that the wave energy is absorbed preferentially by minority species ions traveling in one toroidal direction. The absorption of energy in this manner produces a toroidal electric current even when the injected waves themselves do not have substantial toroidal momentum. This current can be continuously maintained at modest cost in power and may be used to confine the plasma. The system can operate efficiently on fusion grade tokamak plasmas.

  10. The performance of a combined solar photovoltaic (PV) and thermoelectric generator (TEG) system

    E-Print Network [OSTI]

    Bjřrk, R

    2015-01-01

    The performance of a combined solar photovoltaic (PV) and thermoelectric generator (TEG) system is examined using an analytical model for four different types of commercial PVs and a commercial bismuth telluride TEG. The TEG is applied directly on the back of the PV, so that the two devices have the same temperature. The PVs considered are crystalline Si (c-Si), amorphous Si (a-Si), copper indium gallium (di)selenide (CIGS) and cadmium telluride (CdTe) cells. The degradation of PV performance with temperature is shown to dominate the increase in power produced by the TEG, due to the low efficiency of the TEG. For c-Si, CIGS and CdTe PV cells the combined system produces a lower power and has a lower efficiency than the PV alone, whereas for an a-Si cell the total system performance may be slightly increased by the TEG.

  11. International Symposium on Site Characterization for CO2 Geological Storage

    E-Print Network [OSTI]

    Tsang, Chin-Fu

    2006-01-01

    determined in hydraulic well tests ranges between 500 andcreation of hydraulic fractures linked to injecting wells ora hydraulic fracture is generated from injecting wells and

  12. Incorporating Wind Generation Forecast Uncertainty into Power System Operation, Dispatch, and Unit Commitment Procedures

    SciTech Connect (OSTI)

    Makarov, Yuri V.; Etingov, Pavel V.; Huang, Zhenyu; Ma, Jian; Subbarao, Krishnappa

    2010-10-19

    In this paper, an approach to evaluate the uncertainties of the balancing capacity, ramping capability, and ramp duration requirements is proposed. The approach includes three steps: forecast data acquisition, statistical analysis of retrospective information, and prediction of grid balancing requirements for a specified time horizon and a given confidence level. Assessment of the capacity and ramping requirements is performed using a specially developed probabilistic algorithm based on histogram analysis, incorporating sources of uncertainty of both continuous (wind and load forecast errors) and discrete (forced generator outages and start-up failures) nature. A new method called the "flying-brick" technique is developed to evaluate the look-ahead required generation performance envelope for the worst case scenario within a user-specified confidence level. A self-validation process is used to validate the accuracy of the confidence intervals. To demonstrate the validity of the developed uncertainty assessment methods and its impact on grid operation, a framework for integrating the proposed methods with an EMS system is developed. Demonstration through integration with an EMS system illustrates the applicability of the proposed methodology and the developed tool for actual grid operation and paves the road for integration with EMS systems from other vendors.

  13. Generation and decay of entanglement in exciton/polariton trapped systems

    SciTech Connect (OSTI)

    Quiroga, L.; Tejedor, C.

    2011-12-23

    The entanglement evolution of interacting trapped solid-state bosons, i.e. excitons or polaritons, is theoretically studied. From an initially separable state the quasi-particle interactions generate boson entanglement which is degraded as dissipation takes place. Based on exact solutions of a Markovian Master equation at T = 0 K, we discuss how dissipation affects the quantum entanglement dynamics of coupled solid-state boson systems. The single trap Wigner function is also calculated and its relationship to the trapped boson entanglement is discussed.

  14. Assessing the Benefits of On-Site Combined Heat and Power During...

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

    Assessing the Benefits of On-Site Combined Heat and Power During the August 14, 2003, Blackout, June 2004 Assessing the Benefits of On-Site Combined Heat and Power During the...

  15. High temperature adhesive silicone foam composition, foam generating system and method of generating foam. [For access denial

    DOE Patents [OSTI]

    Mead, J.W.; Montoya, O.J.; Rand, P.B.; Willan, V.O.

    1983-12-21

    Access to a space is impeded by generation of a sticky foam from a silicone polymer and a low boiling solvent such as a halogenated hydrocarbon. In a preferred aspect, the formulation is polydimethylsiloxane gel mixed with F502 Freon as a solvent and blowing agent, and pressurized with CO/sub 2/ in a vessel to about 250 PSI, whereby when the vessel is opened, a sticky and solvent resistant foam is deployed. The foam is deployable, over a wide range of temperatures, adhering to wet surfaces as well as dry, is stable over long periods of time and does not propagate flame or lose adhesive properties during an externally supported burn.

  16. Probabilistic Approach to Quantifying the Contribution of Variable Generation and Transmission to System Reliability: Preprint

    SciTech Connect (OSTI)

    Ibanez, E.; Milligan, M.

    2012-09-01

    The increasing electrical load served by variable generation (VG), such as wind and solar energy, in the United States and many other countries has stimulated an interesting line of research to better quantify the capacity value of these resources. Methods applied traditionally to thermal units based on their average outage rates do not apply to VG because of their uncertain and non-dispatchable nature. The North American Electric Reliability Corporation's Integration of Variable Generation Task Force recently released a report that highlighted the need to develop and benchmark underlying loss-of-load expectation and related metrics that reasonably and fairly calculate the contribution to planning reserves, or capacity value, of solar and wind power. As the fraction of generation coming from VG becomes more significant, their estimated capacity value will have a larger impact on system planning. In this paper, we provide a method to include VG in traditional probabilistic-based adequacy methods. This method has been implemented in the Renewable Energy Probabilistic Resource Assessment tool developed at the National Renewable Energy Laboratory. Through an example based on the U.S. Western Interconnection, this method is applied to assess the effect that transmission can have on resource adequacy. We also analyze the interactions between available transmission and capacity value for VG.

  17. System and method for generating steady state confining current for a toroidal plasma fusion reactor

    DOE Patents [OSTI]

    Fisch, Nathaniel J. (Cambridge, MA)

    1981-01-01

    A system for generating steady state confining current for a toroidal plasma fusion reactor providing steady-state generation of the thermonuclear power. A dense, hot toroidal plasma is initially prepared with a confining magnetic field with toroidal and poloidal components. Continuous wave RF energy is injected into said plasma to establish a spectrum of traveling waves in the plasma, where the traveling waves have momentum components substantially either all parallel, or all anti-parallel to the confining magnetic field. The injected RF energy is phased to couple to said traveling waves with both a phase velocity component and a wave momentum component in the direction of the plasma traveling wave components. The injected RF energy has a predetermined spectrum selected so that said traveling waves couple to plasma electrons having velocities in a predetermined range .DELTA.. The velocities in the range are substantially greater than the thermal electron velocity of the plasma. In addition, the range is sufficiently broad to produce a raised plateau having width .DELTA. in the plasma electron velocity distribution so that the plateau electrons provide steady-state current to generate a poloidal magnetic field component sufficient for confining the plasma. In steady state operation of the fusion reactor, the fusion power density in the plasma exceeds the power dissipated in the plasma.

  18. System and method for generating steady state confining current for a toroidal plasma fusion reactor

    DOE Patents [OSTI]

    Bers, Abraham (Arlington, MA)

    1981-01-01

    A system for generating steady state confining current for a toroidal plasma fusion reactor providing steady-state generation of the thermonuclear power. A dense, hot toroidal plasma is initially prepared with a confining magnetic field with toroidal and poloidal components. Continuous wave RF energy is injected into said plasma to estalish a spectrum of traveling waves in the plasma, where the traveling waves have momentum components substantially either all parallel, or all anti-parallel to the confining magnetic field. The injected RF energy is phased to couple to said traveling waves with both a phase velocity component and a wave momentum component in the direction of the plasma traveling wave components. The injected RF energy has a predetermined spectrum selected so that said traveling waves couple to plasma electrons having velocities in a predetermined range .DELTA.. The velocities in the range are substantially greater than the thermal electron velocity of the plasma. In addition, the range is sufficiently broad to produce a raised plateau having width .DELTA. in the plasma electron velocity distribution so that the plateau electrons provide steady-state current to generate a poloidal magnetic field component sufficient for confining the plasma. In steady state operation of the fusion reactor, the fusion power density in the plasma exceeds the power dissipated inthe plasma.

  19. Potential Federal On-Site Solar Aggregation in Washington, D.C., and Maryland

    Broader source: Energy.gov [DOE]

    Presentation describes potential Federal on-site solar aggregation opportunities in Washington, D.C., and Maryland.

  20. PGPG: An Automatic Generator of Pipeline Design for Programmable GRAPE Systems

    E-Print Network [OSTI]

    Tsuyoshi Hamada; Toshiyuki Fukushige; Junichiro Makino

    2007-03-08

    We have developed PGPG (Pipeline Generator for Programmable GRAPE), a software which generates the low-level design of the pipeline processor and communication software for FPGA-based computing engines (FBCEs). An FBCE typically consists of one or multiple FPGA (Field-Programmable Gate Array) chips and local memory. Here, the term "Field-Programmable" means that one can rewrite the logic implemented to the chip after the hardware is completed, and therefore a single FBCE can be used for calculation of various functions, for example pipeline processors for gravity, SPH interaction, or image processing. The main problem with FBCEs is that the user need to develop the detailed hardware design for the processor to be implemented to FPGA chips. In addition, she or he has to write the control logic for the processor, communication and data conversion library on the host processor, and application program which uses the developed processor. These require detailed knowledge of hardware design, a hardware description language such as VHDL, the operating system and the application, and amount of human work is huge. A relatively simple design would require 1 person-year or more. The PGPG software generates all necessary design descriptions, except for the application software itself, from a high-level design description of the pipeline processor in the PGPG language. The PGPG language is a simple language, specialized to the description of pipeline processors. Thus, the design of pipeline processor in PGPG language is much easier than the traditional design. For real applications such as the pipeline for gravitational interaction, the pipeline processor generated by PGPG achieved the performance similar to that of hand-written code. In this paper we present a detailed description of PGPG version 1.0.

  1. Generating a fractal butterfly Floquet spectrum in a class of driven SU(2) systems

    SciTech Connect (OSTI)

    Wang Jiao [Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005 (China); Temasek Laboratories, National University of Singapore, Singapore 117542 (Singapore); Gong Jiangbin [Department of Physics and Center of Computational Science and Engineering, National University of Singapore, Singapore 117542 (Singapore); NUS Graduate School for Integrative Sciences and Engineering, Singapore 117597 (Singapore)

    2010-02-15

    A scheme for generating a fractal butterfly Floquet spectrum, first proposed by Wang and Gong [Phys. Rev. A 77, 031405(R) (2008)], is extended to driven SU(2) systems such as a driven two-mode Bose-Einstein condensate. A class of driven systems without a link with the Harper-model context is shown to have an intriguing butterfly Floquet spectrum. The found butterfly spectrum shows remarkable deviations from the known Hofstadter's butterfly. In addition, the level crossings between Floquet states of the same parity and between Floquet states of different parities are studied and highlighted. The results are relevant to studies of fractal statistics, quantum chaos, and coherent destruction of tunneling, as well as the validity of mean-field descriptions of Bose-Einstein condensates.

  2. Model predictive control system and method for integrated gasification combined cycle power generation

    DOE Patents [OSTI]

    Kumar, Aditya; Shi, Ruijie; Kumar, Rajeeva; Dokucu, Mustafa

    2013-04-09

    Control system and method for controlling an integrated gasification combined cycle (IGCC) plant are provided. The system may include a controller coupled to a dynamic model of the plant to process a prediction of plant performance and determine a control strategy for the IGCC plant over a time horizon subject to plant constraints. The control strategy may include control functionality to meet a tracking objective and control functionality to meet an optimization objective. The control strategy may be configured to prioritize the tracking objective over the optimization objective based on a coordinate transformation, such as an orthogonal or quasi-orthogonal projection. A plurality of plant control knobs may be set in accordance with the control strategy to generate a sequence of coordinated multivariable control inputs to meet the tracking objective and the optimization objective subject to the prioritization resulting from the coordinate transformation.

  3. Cascading Failure Risk Variation with Generator Dispatch and System Load Level

    E-Print Network [OSTI]

    Rezaei, Pooya

    2013-01-01

    Industry reliability rules increasingly require utilities to study and mitigate cascading failure risk in their system. Motivated by this, this paper describes how cascading failure risk, in terms of expected blackout size, varies with power system load level and pre-contingency dispatch. We used Monte Carlo sampling of random branch outages to model contingencies, and a model of cascading failure to estimate blackout sizes. The risk associated with different blackout sizes is separately estimated in order to separate small, medium, and large blackout risk. Results from N-1 secure models of the IEEE RTS case and a 2383 bus case indicate that blackout risk does not always increase with load level, particularly for large blackout risk. The results also show that risk is highly dependent on the method used for generator dispatch. Minimum cost methods of dispatch can result in larger long distance power transfers, which can increase cascading failure risk.

  4. Generation co-ordination and energy trading systems in an open market

    SciTech Connect (OSTI)

    Eichler, R.

    1998-07-01

    The power industry in many parts of the world is currently undergoing dramatic changes: deregulation, privatization, competition and 3rd party access are the keywords. The major trends are summarized at the beginning of the paper to provide the basis for the evolving consequences for the power generation industry. In the restructured environment of the Open Market power generation companies frequently are organizationally separated from transmission, distribution, and supply and now have to sell their product directly to customers. This necessitates the introduction of energy trading support functions for both bilateral trading and power exchange trading. On the other hand, there is a close relationship between energy trading and the technical process of energy production. The paper discusses design principles for software systems supporting maximum economic benefits. First practical application experience is also presented. The energy trading process requires the break up of proprietary databases and proprietary data structures as this process has a major need to communicate with external partners who normally use different systems. This directly leads to 3rd party products for the database, standardized data structures and standardized communication protocols. The Open Market environment calls for new and modified planning functions: in some cases measured value information necessary for updating load forecasts cannot be directly achieved. This leads to the need for an estimator of the actual load situation, a completely new function. Power scheduling has to take care of the generation company's balance but it need not always be forced to 0. Regulating services from the grid companies can be used instead. This gives the scheduling functions additional freedom for determining more economic overall solutions considering both purchase and services and sales of energy.

  5. Incorporating Uncertainty of Wind Power Generation Forecast into Power System Operation, Dispatch, and Unit Commitment Procedures

    SciTech Connect (OSTI)

    Makarov, Yuri V.; Etingov, Pavel V.; Ma, Jian; Huang, Zhenyu; Subbarao, Krishnappa

    2011-06-23

    An approach to evaluate the uncertainties of the balancing capacity, ramping capability, and ramp duration requirements is proposed. The approach includes three steps: forecast data acquisition, statistical analysis of retrospective information, and prediction of grid balancing requirements for a specified time horizon and a given confidence level. An assessment of the capacity and ramping requirements is performed using a specially developed probabilistic algorithm based on histogram analysis, incorporating sources of uncertainty - both continuous (wind and load forecast errors) and discrete (forced generator outages and start-up failures). A new method called the 'flying-brick' technique is developed to evaluate the look-ahead required generation performance envelope for the worst case scenario within a user-specified confidence level. A self-validation process is used to validate the accuracy of the confidence intervals. To demonstrate the validity of the developed uncertainty assessment methods and its impact on grid operation, a framework for integrating the proposed methods with an EMS system is developed. Demonstration through EMS integration illustrates the applicability of the proposed methodology and the developed tool for actual grid operation and paves the road for integration with EMS systems in control rooms.

  6. Advisor 2.0: A Second-Generation Advanced Vehicle Simulator for Systems Analysis

    SciTech Connect (OSTI)

    Wipke, K.; Cuddy, M.; Bharathan, D.; Burch, S.; Johnson, V.; Markel, A.; Sprik, S.

    1999-03-23

    The National Renewable Energy Laboratory has recently publicly released its second-generation advanced vehicle simulator called ADVISOR 2.0. This software program was initially developed four years ago, and after several years of in-house usage and evolution, the tool is now available to the public through a new vehicle systems analysis World Wide Web page. ADVISOR has been applied to many different systems analysis problems, such as helping to develop the SAE J1711 test procedure for hybrid vehicles and helping to evaluate new technologies as part of the Partnership for a New Generation of Vehicles (PNGV) technology selection process. The model has been and will continue to be benchmarked and validated with other models and with real vehicle test data. After two months of being available on the Web, more than 100 users have downloaded ADVISOR. ADVISOR 2.0 has many new features, including an easy-to-use graphical user interface, a detailed exhaust aftertreatment thermal model, and complete browser-based documentation. Future work will include adding to the library of components available in ADVISOR, including optimization functionality, and linking with a more detailed fuel cell model.

  7. System for generating shaped optical pulses and measuring optical pulses using spectral beam deflection (SBD)

    DOE Patents [OSTI]

    Skupsky, S.; Kessler, T.J.; Letzring, S.A.

    1993-11-16

    A temporally shaped or modified optical output pulse is generated from a bandwidth-encoded optical input pulse in a system in which the input pulse is in the form of a beam which is spectrally spread into components contained within the bandwidth, followed by deflection of the spectrally spread beam (SBD) thereby spatially mapping the components in correspondence with the temporal input pulse profile in the focal plane of a lens, and by spatially selective attenuation of selected components in that focal plane. The shaped or modified optical output pulse is then reconstructed from the attenuated spectral components. The pulse-shaping system is particularly useful for generating optical pulses of selected temporal shape over a wide range of pulse duration, such pulses finding application in the fields of optical communication, optical recording and data storage, atomic and molecular spectroscopy and laser fusion. An optical streak camera is also provided which uses SBD to display the beam intensity in the focal plane as a function of time during the input pulse. 10 figures.

  8. A Technique to Utilize Smart Meter Load Information for Adapting Overcurrent Protection for Radial Distribution Systems with Distributed Generations 

    E-Print Network [OSTI]

    Ituzaro, Fred Agyekum

    2012-07-16

    Smart radial distribution grids will include advanced metering infrastructure (AMI) and significant distributed generators (DGs) connected close to loads. DGs in these radial distribution systems (RDS) introduce bidirectional power flows (BPFs...

  9. Future Generation Computer Systems 29 (2013) 472487 Contents lists available at SciVerse ScienceDirect

    E-Print Network [OSTI]

    Sakellariou, Rizos

    2013-01-01

    Future Generation Computer Systems 29 (2013) 472­487 Contents lists available at SciVerse Science or water [1]. For the underlying infrastructure this means that it has to deal with dynamic load changes

  10. Future Generation Computer Systems 29 (2013) 10121023 Contents lists available at SciVerse ScienceDirect

    E-Print Network [OSTI]

    Melbourne, University of

    2013-01-01

    Future Generation Computer Systems 29 (2013) 1012­1023 Contents lists available at SciVerse Science (e.g., water, electricity and gas). The three main services are provided by the Cloud computing ar

  11. Webinar: 2011-2012 Hydrogen Student Design Contest Winners: On-Campus Tri-Generation Fuel Cell Systems

    Broader source: Energy.gov [DOE]

    Video recording of the Fuel Cell Technologies Office webinar, 2011-2012 Hydrogen Student Design Contest Winners: On-Campus Tri-Generation Fuel Cell Systems, originally presented on September 4, 2012.

  12. Next-generation building energy management systems and implications for electricity markets.

    SciTech Connect (OSTI)

    Zavala, V. M.; Thomas, C.; Zimmerman, M.; Ott, A.

    2011-08-11

    The U.S. national electric grid is facing significant changes due to aggressive federal and state targets to decrease emissions while improving grid efficiency and reliability. Additional challenges include supply/demand imbalances, transmission constraints, and aging infrastructure. A significant number of technologies are emerging under this environment including renewable generation, distributed storage, and energy management systems. In this paper, we claim that predictive energy management systems can play a significant role in achieving federal and state targets. These systems can merge sensor data and predictive statistical models, thereby allowing for a more proactive modulation of building energy usage as external weather and market signals change. A key observation is that these predictive capabilities, coupled with the fast responsiveness of air handling units and storage devices, can enable participation in several markets such as the day-ahead and real-time pricing markets, demand and reserves markets, and ancillary services markets. Participation in these markets has implications for both market prices and reliability and can help balance the integration of intermittent renewable resources. In addition, these emerging predictive energy management systems are inexpensive and easy to deploy, allowing for broad building participation in utility centric programs.

  13. The Case for Natural Gas Fueled Solid Oxide Fuel Cell Power Systems for Distributed Generation

    SciTech Connect (OSTI)

    Chick, Lawrence A.; Weimar, Mark R.; Whyatt, Greg A.; Powell, Michael R.

    2015-02-01

    Natural-gas-fueled solid oxide fuel cell (NGSOFC) power systems yield electrical conversion efficiencies exceeding 60% and may become a viable alternative for distributed generation (DG) if stack life and manufacturing economies of scale can be realized. Currently, stacks last approximately 2 years and few systems are produced each year because of the relatively high cost of electricity from the systems. If mass manufacturing (10,000 units per year) and a stack life of 15 years can be reached, the cost of electricity from an NGSOFC system is estimated to be about 7.7 ˘/kWh, well within the price of commercial and residential retail prices at the national level (9.9-10˘/kWh and 11-12 ˘/kWh, respectively). With an additional 5 ˘/kWh in estimated additional benefits from DG, NGSOFC could be well positioned to replace the forecasted 59-77 gigawatts of capacity loss resulting from coal plant closures due to stricter emissions regulations and low natural gas prices.

  14. A power system includes an engine, a motor/generator operatively connected to the engine, and a starter operatively connected to at least one of the engine and the motor/generator.

    DOE Patents [OSTI]

    Hoff, Brian D. (East Peoria, IL); Algrain, Marcelo C. (Peoria, IL)

    2008-12-09

    A power system includes an engine, a motor/generator operatively connected to the engine, and a starter operatively connected to at least one of the engine and the motor/generator.

  15. On-Site Oxy-Lance Size Reduction of South Texas Project Reactor Vessel Heads - 12324

    SciTech Connect (OSTI)

    Posivak, Edward [WMG, inc. (United States); Keeney, Gilbert; Wheeler, Dean [Shaw Group (United States)

    2012-07-01

    On-Site Oxy-Lance size reduction of mildly radioactive large components has been accomplished at other operating plants. On-Site Oxy-Lance size reduction of more radioactive components like Reactor Vessel Heads had previously been limited to decommissioning projects. Building on past decommissioning and site experience, subcontractors for South Texas Project Nuclear Operating Company (STPNOC) developed an innovative integrated system to control smoke, radioactive contamination, worker dose, and worker safety. STP's innovative, easy to use CEDM containment that provided oxy lance access, smoke control, and spatter/contamination control was the key to successful segmentation for cost-effective and ALARA packaging and transport for disposal. Relative to CEDM milling, STP oxy-lance segmentation saved approximately 40 person- REM accrued during 9,000 hours logged into the radiological controlled area (RCA) during more than 3,800 separate entries. Furthermore there were no personnel contamination events or respiratory uptakes of radioactive material during the course of the entire project. (authors)

  16. International Symposium on Site Characterization for CO2Geological Storage

    SciTech Connect (OSTI)

    Tsang, Chin-Fu

    2006-02-23

    Several technological options have been proposed to stabilize atmospheric concentrations of CO{sub 2}. One proposed remedy is to separate and capture CO{sub 2} from fossil-fuel power plants and other stationary industrial sources and to inject the CO{sub 2} into deep subsurface formations for long-term storage and sequestration. Characterization of geologic formations for sequestration of large quantities of CO{sub 2} needs to be carefully considered to ensure that sites are suitable for long-term storage and that there will be no adverse impacts to human health or the environment. The Intergovernmental Panel on Climate Change (IPCC) Special Report on Carbon Dioxide Capture and Storage (Final Draft, October 2005) states that ''Site characterization, selection and performance prediction are crucial for successful geological storage. Before selecting a site, the geological setting must be characterized to determine if the overlying cap rock will provide an effective seal, if there is a sufficiently voluminous and permeable storage formation, and whether any abandoned or active wells will compromise the integrity of the seal. Moreover, the availability of good site characterization data is critical for the reliability of models''. This International Symposium on Site Characterization for CO{sub 2} Geological Storage (CO2SC) addresses the particular issue of site characterization and site selection related to the geologic storage of carbon dioxide. Presentations and discussions cover the various aspects associated with characterization and selection of potential CO{sub 2} storage sites, with emphasis on advances in process understanding, development of measurement methods, identification of key site features and parameters, site characterization strategies, and case studies.

  17. Operating experience feedback report -- turbine-generator overspeed protection systems: Commercial power reactors. Volume 11

    SciTech Connect (OSTI)

    Ornstein, H.L.

    1995-04-01

    This report presents the results of the US Nuclear Regulatory Commission`s Office for Analysis and Evaluation of Operational Data (AEOD) review of operating experience of main turbine-generator overspeed and overspeed protection systems. It includes an indepth examination of the turbine overspeed event which occurred on November 9, 1991, at the Salem Unit 2 Nuclear Power Plant. It also provides information concerning actions taken by other utilities and the turbine manufacturers as a result of the Salem overspeed event. AEOD`s study reviewed operating procedures and plant practices. It noted differences between turbine manufacturer designs and recommendations for operations, maintenance, and testing, and also identified significant variations in the manner that individual plants maintain and test their turbine overspeed protection systems. AEOD`s study provides insight into the shortcomings in the design, operation, maintenance, testing, and human factors associated with turbine overspeed protection systems. Operating experience indicates that the frequency of turbine overspeed events is higher than previously thought and that the bases for demonstrating compliance with NRC`s General Design Criterion (GDC) 4, Environmental and dynamic effects design bases, may be nonconservative with respect to the assumed frequency.

  18. Multi-attribute criteria applied to electric generation energy system analysis LDRD.

    SciTech Connect (OSTI)

    Kuswa, Glenn W.; Tsao, Jeffrey Yeenien; Drennen, Thomas E.; Zuffranieri, Jason V.; Paananen, Orman Henrie; Jones, Scott A.; Ortner, Juergen G.; Brewer, Jeffrey D.; Valdez, Maximo M.

    2005-10-01

    This report began with a Laboratory-Directed Research and Development (LDRD) project to improve Sandia National Laboratories multidisciplinary capabilities in energy systems analysis. The aim is to understand how various electricity generating options can best serve needs in the United States. The initial product is documented in a series of white papers that span a broad range of topics, including the successes and failures of past modeling studies, sustainability, oil dependence, energy security, and nuclear power. Summaries of these projects are included here. These projects have provided a background and discussion framework for the Energy Systems Analysis LDRD team to carry out an inter-comparison of many of the commonly available electric power sources in present use, comparisons of those options, and efforts needed to realize progress towards those options. A computer aid has been developed to compare various options based on cost and other attributes such as technological, social, and policy constraints. The Energy Systems Analysis team has developed a multi-criteria framework that will allow comparison of energy options with a set of metrics that can be used across all technologies. This report discusses several evaluation techniques and introduces the set of criteria developed for this LDRD.

  19. Design Study of the Extraction System of the 3rd Generation ECR Ion Source

    SciTech Connect (OSTI)

    Leitner, M.A.; Lyneis, C.M.; Taylor, C.E.; Wutte, D.; Xie, Z.Q.

    1998-10-06

    A design study for the extraction system of the 3rd Generation super conducting ECR ion source at LBNL is presented. The magnetic design of the ion source has a mirror field of 4 T at the injection and 3 T at the extraction side and a radial field of 2.4 T at the plasma chamber wall. Therefore, the ion beam formation takes place in a strong axial magnetic field. Furthermore the axial field drops from 3 T to 0.4 T within the first 30 cm. The influence of the high magnetic field on the ion beam extraction and matching to the beam line is investigated. The extraction system is first simulated with the 2D ion trajectory code IGUN with an estimated mean charge state of the extracted ion beam. These results are then compared with the 2D code AXCEL-INP, which can simulate the extraction of ions with different charge states. Finally, the influence of the strong magnetic hexapole field is studied with the three dimensional ion optics code KOBRA. The introduced tool set can be used to optimize the extraction system of the super conducting ECR ion source.

  20. Advanced Thomson scattering system for high-flux linear plasma generator

    SciTech Connect (OSTI)

    Meiden, H. J. van der; Lof, A. R.; Berg, M. A. van den; Brons, S.; Eck, H. J. N. van; Koelman, P. M. J.; Koppers, W. R.; Kruijt, O. G.; Oyevaar, T.; Prins, P. R.; Rapp, J.; Scholten, J.; Smeets, P. H. M.; Star, G. van der; Zeijlmans van Emmichoven, P. A.; Donne, A. J. H.; Schram, D. C.; Naumenko, N. N.; Tugarinov, S. N.

    2012-12-15

    An advanced Thomson scattering system has been built for a linear plasma generator for plasma surface interaction studies. The Thomson scattering system is based on a Nd:YAG laser operating at the second harmonic and a detection branch featuring a high etendue (f /3) transmission grating spectrometer equipped with an intensified charged coupled device camera. The system is able to measure electron density (n{sub e}) and temperature (T{sub e}) profiles close to the output of the plasma source and, at a distance of 1.25 m, just in front of a target. The detection system enables to measure 50 spatial channels of about 2 mm each, along a laser chord of 95 mm. By summing a total of 30 laser pulses (0.6 J, 10 Hz), an observational error of 3% in n{sub e} and 6% in T{sub e} (at n{sub e}= 9.4 Multiplication-Sign 10{sup 18} m{sup -3}) can be obtained. Single pulse Thomson scattering measurements can be performed with the same accuracy for n{sub e} > 2.8 Multiplication-Sign 10{sup 20} m{sup -3}. The minimum measurable density and temperature are n{sub e} < 1 Multiplication-Sign 10{sup 17} m{sup -3} and T{sub e} < 0.07 eV, respectively. In addition, using the Rayleigh peak, superimposed on the Thomson scattered spectrum, the neutral density (n{sub 0}) of the plasma can be measured with an accuracy of 25% (at n{sub 0}= 1 Multiplication-Sign 10{sup 20} m{sup -3}). In this report, the performance of the Thomson scattering system will be shown along with unprecedented accurate Thomson-Rayleigh scattering measurements on a low-temperature argon plasma expansion into a low-pressure background.

  1. Method of controlling temperature of a thermoelectric generator in an exhaust system

    DOE Patents [OSTI]

    Prior, Gregory P; Reynolds, Michael G; Cowgill, Joshua D

    2013-05-21

    A method of controlling the temperature of a thermoelectric generator (TEG) in an exhaust system of an engine is provided. The method includes determining the temperature of the heated side of the TEG, determining exhaust gas flow rate through the TEG, and determining the exhaust gas temperature through the TEG. A rate of change in temperature of the heated side of the TEG is predicted based on the determined temperature, the determined exhaust gas flow rate, and the determined exhaust gas temperature through the TEG. Using the predicted rate of change of temperature of the heated side, exhaust gas flow rate through the TEG is calculated that will result in a maximum temperature of the heated side of the TEG less than a predetermined critical temperature given the predicted rate of change in temperature of the heated side of the TEG. A corresponding apparatus is provided.

  2. System and method for generating and/or screening potential metal-organic frameworks

    DOE Patents [OSTI]

    Wilmer, Christopher E; Leaf, Michael; Snurr, Randall Q; Farha, Omar K; Hupp, Joseph T

    2015-04-21

    A system and method for systematically generating potential metal-organic framework (MOFs) structures given an input library of building blocks is provided herein. One or more material properties of the potential MOFs are evaluated using computational simulations. A range of material properties (surface area, pore volume, pore size distribution, powder x-ray diffraction pattern, methane adsorption capability, and the like) can be estimated, and in doing so, illuminate unidentified structure-property relationships that may only have been recognized by taking a global view of MOF structures. In addition to identifying structure-property relationships, this systematic approach to identify the MOFs of interest is used to identify one or more MOFs that may be useful for high pressure methane storage.

  3. System and method for generating and/or screening potential metal-organic frameworks

    DOE Patents [OSTI]

    Wilmer, Christopher E; Leaf, Michael; Snurr, Randall Q; Farha, Omar K; Hupp, Joseph T

    2014-12-02

    A system and method for systematically generating potential metal-organic framework (MOFs) structures given an input library of building blocks is provided herein. One or more material properties of the potential MOFs are evaluated using computational simulations. A range of material properties (surface area, pore volume, pore size distribution, powder x-ray diffraction pattern, methane adsorption capability, and the like) can be estimated, and in doing so, illuminate unidentified structure-property relationships that may only have been recognized by taking a global view of MOF structures. In addition to identifying structure-property relationships, this systematic approach to identify the MOFs of interest is used to identify one or more MOFs that may be useful for high pressure methane storage.

  4. Discharge formation systems for generating atomic iodine in a pulse-periodic oxygen–iodine laser

    SciTech Connect (OSTI)

    Aksinin, V I; Kazantsev, S Yu; Kononov, I G; Podlesnykh, S V; Firsov, K N [A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation); Antsiferov, S A; Velikanov, S D; Gerasimov, A Yu; Gostev, I V; Kalinovskii, V V; Konovalov, V V; Mikhalkin, V N; Sevryugin, I V [Russian Federal Nuclear Center 'All-Russian Research Institute of Experimental Physics', Sarov, Nizhnii Novgorod region (Russian Federation)

    2014-01-31

    Generation characteristics of a pulse-periodic oxygen–iodine laser with the electro-discharge production of atomic iodine were compared with inductively stabilised edged or anisotropic- resistive cathodes used for ignition of the volume discharge. The discharge was initiated by the radiation of a barrier discharge from the side of a grid anode. It was found that at equal specific electrical energy depositions to the gas-discharge plasma, the system with the anisotropic-resistive cathode provides a more stable and uniform volume discharge with the possibility of varying the composition and pressure of working mixtures over a wide range and a greater specific extraction of laser energy is observed (up to 2.4 J L{sup -1}). At a high pulse repetition rate of laser pulses (50 – 100 Hz) and long duration of the pulse trains (longer than a minute) the surface of anisotropic-resistive cathode became eroded. (laser applications and other topics in quantum electronics)

  5. Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems

    DOE Patents [OSTI]

    Moradi, Hussein; Farhang, Behrouz; Subramanian, Vijayarangam

    2015-12-15

    Self-generating fault-tolerant keys for use in spread-spectrum systems are disclosed. At a communication device, beacon signals are received from another communication device and impulse responses are determined from the beacon signals. The impulse responses are circularly shifted to place a largest sample at a predefined position. The impulse responses are converted to a set of frequency responses in a frequency domain. The frequency responses are shuffled with a predetermined shuffle scheme to develop a set of shuffled frequency responses. A set of phase differences is determined as a difference between an angle of the frequency response and an angle of the shuffled frequency response at each element of the corresponding sets. Each phase difference is quantized to develop a set of secret-key quantized phases and a set of spreading codes is developed wherein each spreading code includes a corresponding phase of the set of secret-key quantized phases.

  6. Methods and apparatuses for self-generating fault-tolerant keys in spread-spectrum systems

    DOE Patents [OSTI]

    Moradi, Hussein; Farhang, Behrouz; Subramanian, Vijayarangam

    2015-12-22

    Self-generating fault-tolerant keys for use in spread-spectrum systems are disclosed. At a communication device, beacon signals are received from another communication device and impulse responses are determined from the beacon signals. The impulse responses are circularly shifted to place a largest sample at a predefined position. The impulse responses are converted to a set of frequency responses in a frequency domain. The frequency responses are shuffled with a predetermined shuffle scheme to develop a set of shuffled frequency responses. A set of phase differences is determined as a difference between an angle of the frequency response and an angle of the shuffled frequency response at each element of the corresponding sets. Each phase difference is quantized to develop a set of secret-key quantized phases and a set of spreading codes is developed wherein each spreading code includes a corresponding phase of the set of secret-key quantized phases.

  7. Techno-Economic Feasibility of Highly Efficient Cost-Effective Thermoelectric-SOFC Hybrid Power Generation Systems

    SciTech Connect (OSTI)

    Jifeng Zhang; Jean Yamanis

    2007-09-30

    Solid oxide fuel cell (SOFC) systems have the potential to generate exhaust gas streams of high temperature, ranging from 400 to 800 C. These high temperature gas streams can be used for additional power generation with bottoming cycle technologies to achieve higher system power efficiency. One of the potential candidate bottoming cycles is power generation by means of thermoelectric (TE) devices, which have the inherent advantages of low noise, low maintenance and long life. This study was to analyze the feasibility of combining coal gas based SOFC and TE through system performance and cost techno-economic modeling in the context of multi-MW power plants, with 200 kW SOFC-TE module as building blocks. System and component concepts were generated for combining SOFC and TE covering electro-thermo-chemical system integration, power conditioning system (PCS) and component designs. SOFC cost and performance models previously developed at United Technologies Research Center were modified and used in overall system analysis. The TE model was validated and provided by BSST. The optimum system in terms of energy conversion efficiency was found to be a pressurized SOFC-TE, with system efficiency of 65.3% and cost of $390/kW of manufacturing cost. The pressurization ratio was approximately 4 and the assumed ZT of the TE was 2.5. System and component specifications were generated based on the modeling study. The major technology and cost barriers for maturing the system include pressurized SOFC stack using coal gas, the high temperature recycle blowers, and system control design. Finally, a 4-step development roadmap is proposed for future technology development, the first step being a 1 kW proof-of-concept demonstration unit.

  8. Next Generation Environmentally-Friendly Driving Feedback Systems Research and Development

    SciTech Connect (OSTI)

    Barth, Matthew; Boriboonsomsin, Kanok

    2014-12-31

    The objective of this project is to design, develop, and demonstrate a next-generation, federal safety- and emission-complaint driving feedback system that can be deployed across the existing vehicle fleet and improve fleet average fuel efficiency by at least 2%. The project objective was achieved with the driving feedback system that encourages fuel-efficient vehicle travel and operation through: 1) Eco-Routing Navigation module that suggests the most fuel-efficient route from one stop to the next, 2) Eco-Driving Feedback module that provides sensible information, recommendation, and warning regarding fuel-efficient vehicle operation, and 3) Eco-Score and Eco-Rank module that provides a means for driving performance tracking, self-evaluation, and peer comparison. The system also collects and stores vehicle travel and operation data, which are used by Algorithm Updating module to customize the other modules for specific vehicles and adapts them to specific drivers over time. The driving feedback system was designed and developed as an aftermarket technology that can be retrofitted to vehicles in the existing fleet. It consists of a mobile application for smart devices running Android operating system, a vehicle on-board diagnostics connector, and a data server. While the system receives and utilizes real-time vehicle and engine data from the vehicle’s controller area network bus through the vehicle’s on-board diagnostic connector, it does not modify or interfere with the vehicle’s controller area network bus, and thus, is in compliance with federal safety and emission regulations. The driving feedback system was demonstrated and then installed on 45 vehicles from three different fleets for field operational test. These include 15 private vehicles of the general public, 15 pickup trucks of the California Department of Transportation that are assigned to individual employees for business use, and 15 shuttle buses of the Riverside Transit Agency that are used for paratransit service. Detailed vehicle travel and operation data including route taken, driving speed, acceleration, braking, and the corresponding fuel consumption, were collected both before and during the test period. The data analysis results show that the fleet average fuel efficiency improvements for the three fleets with the use of the driving feedback system are in the range of 2% to 9%. The economic viability of the driving feedback system is high. A fully deployed system would require capital investment in smart device ($150-$350) and on-board diagnostics connector ($50-$100) as well as paying operating costs for wireless data plan and subscription fees ($20-$30 per month) for connecting to the data server and receiving various system services. For individual consumers who already own a smart device (such as smartphone) and commercial fleets that already use some kind of telematics services, the costs for deploying this driving feedback system would be much lower.

  9. Use of Produced Water in Recirculated Cooling Systems at Power Generating Facilities

    SciTech Connect (OSTI)

    C. McGowin; M. DiFilippo; L. Weintraub

    2006-06-30

    Tree ring studies indicate that, for the greater part of the last three decades, New Mexico has been relatively 'wet' compared to the long-term historical norm. However, during the last several years, New Mexico has experienced a severe drought. Some researchers are predicting a return of very dry weather over the next 30 to 40 years. Concern over the drought has spurred interest in evaluating the use of otherwise unusable saline waters to supplement current fresh water supplies for power plant operation and cooling and other uses. The U.S. Department of Energy's National Energy Technology Laboratory sponsored three related assessments of water supplies in the San Juan Basin area of the four-corner intersection of Utah, Colorado, Arizona, and New Mexico. These were (1) an assessment of using water produced with oil and gas as a supplemental supply for the San Juan Generating Station (SJGS); (2) a field evaluation of the wet-surface air cooling (WSAC) system at SJGS; and (3) the development of a ZeroNet systems analysis module and an application of the Watershed Risk Management Framework (WARMF) to evaluate a range of water shortage management plans. The study of the possible use of produced water at SJGS showed that produce water must be treated to justify its use in any reasonable quantity at SJGS. The study identified produced water volume and quality, the infrastructure needed to deliver it to SJGS, treatment requirements, and delivery and treatment economics. A number of produced water treatment alternatives that use off-the-shelf technology were evaluated along with the equipment needed for water treatment at SJGS. Wet surface air-cooling (WSAC) technology was tested at the San Juan Generating Station (SJGS) to determine its capacity to cool power plant circulating water using degraded water. WSAC is a commercial cooling technology and has been used for many years to cool and/or condense process fluids. The purpose of the pilot test was to determine if WSAC technology could cool process water at cycles of concentration considered highly scale forming for mechanical draft cooling towers. At the completion of testing, there was no visible scale on the heat transfer surfaces and cooling was sustained throughout the test period. The application of the WARMF decision framework to the San Juan Basis showed that drought and increased temperature impact water availability for all sectors (agriculture, energy, municipal, industry) and lead to critical shortages. WARMF-ZeroNet, as part of the integrated ZeroNet decision support system, offers stakeholders an integrated approach to long-term water management that balances competing needs of existing water users and economic growth under the constraints of limited supply and potential climate change.

  10. System and method for investigating sub-surface features of a rock formation with acoustic sources generating coded signals

    DOE Patents [OSTI]

    Vu, Cung Khac; Nihei, Kurt; Johnson, Paul A; Guyer, Robert; Ten Cate, James A; Le Bas, Pierre-Yves; Larmat, Carene S

    2014-12-30

    A system and a method for investigating rock formations includes generating, by a first acoustic source, a first acoustic signal comprising a first plurality of pulses, each pulse including a first modulated signal at a central frequency; and generating, by a second acoustic source, a second acoustic signal comprising a second plurality of pulses. A receiver arranged within the borehole receives a detected signal including a signal being generated by a non-linear mixing process from the first-and-second acoustic signal in a non-linear mixing zone within the intersection volume. The method also includes-processing the received signal to extract the signal generated by the non-linear mixing process over noise or over signals generated by a linear interaction process, or both.

  11. Early evaluation of a second generation information monitoring and diagnostic system

    SciTech Connect (OSTI)

    Piette, Mary Ann; Kinney, Satkartar; Bourassa, Norman; Xu, Peng; Haves, Philip; Kinney, Kristopher; Shockman, Christine

    2002-03-25

    Private sector commercial office buildings are challenging environments for energy efficiency projects. This challenge is related to the complexity of business environments that involve ownership, operation, and tenant relationships. Whether it is poor quality design, inefficient operations, degradation of equipment over time, or merely the increasing use of energy by tenants and inattention from landlords, commercial office building energy use continues to increase. This research project was developed to examine the environment for building operations and identify causes of inefficient use of energy related to technical and organizational issues. This report discusses a second-generation Information Monitoring and Diagnostic System (IMDS) installed at a leased office building in Sacramento, California. The report begins with a brief summary of the IMDS research at the previous building, followed by a discussion of the building selection process, the IMDS design and installation, recent use of the IMDS, costs and benefits, and fault detection and diagnostic research using the IMDS. A web site describes the IMDS in detail (see imds.lbl.gov). The underlying principle of this research project is that high quality building performance data can help show where energy is being used and how buildings systems actually perform is an important first step toward improving building energy efficiency. The project utilizes a high-quality monitoring system that has been developed during the past decade by a partnership between LBNL and private industry. This research project has been successful in demonstrating that the IMDS is tremendously valuable to the building operators at the Sacramento site. The building operators not only accept the technology, but it has become the core of their day-to-day building control concepts. The innovative property management company, Jones Lang LaSalle, is interested in installing more sites to determine if the system could provide an economic platform for regional operations. One objective of this project was to install the IMDS and evaluate the costs and benefits of its use. The costs have been evaluated. The system cost about $0.70 per square foot, which includes the design, hardware, software, and installation, which is about 30% lower than the previous system in San Francisco. A number of operational problems have been identified with the IMDS as described in the report. Potential energy savings from addressing problems identified by the application of the IMDS have not yet been quantified, although the IMDS has been an important tool to the operations staff to help better assess planned future retrofits.

  12. Modeling and Control System Design for an Integrated Solar Generation and Energy Storage System with a Ride-Through Capability: Preprint

    SciTech Connect (OSTI)

    Wang, X.; Yue, M.; Muljadi, E.

    2012-09-01

    This paper presents a generic approach for PV panel modeling. Data for this modeling can be easily obtained from manufacturer datasheet, which provides a convenient way for the researchers and engineers to investigate the PV integration issues. A two-stage power conversion system (PCS) is adopted in this paper for the PV generation system and a Battery Energy Storage System (BESS) can be connected to the dc-link through a bi-directional dc/dc converter. In this way, the BESS can provide some ancillary services which may be required in the high penetration PV generation scenario. In this paper, the fault ride-through (FRT) capability is specifically focused. The integrated BESS and PV generation system together with the associated control systems is modeled in PSCAD and Matlab platforms and the effectiveness of the controller is validated by the simulation results.

  13. Resolution Improvement and Pattern Generator Development for the Maskless Micro-Ion-Beam Reduction Lithography System

    E-Print Network [OSTI]

    Jiang, Ximan

    2006-01-01

    generator will be exposed to the plasma after it is installed on MMRL. Copper layer Permanent magnet

  14. Motivation History of the Tools Current Generation Tools Summary Using Modern Revision Control Systems,

    E-Print Network [OSTI]

    Motivation History of the Tools Current Generation Tools Summary Using Modern Revision Control, Computer Science Graduate Seminar Series #12;Motivation History of the Tools Current Generation Tools Summary Outline 1 Motivation 2 History of the Tools 3 Current Generation Tools #12;Motivation History

  15. System and method to improve the power output and longetivity of a radioisotope thermoelectric generator

    DOE Patents [OSTI]

    Mowery, Jr., Alfred L. (Potomac, MD)

    1993-01-01

    By using the helium generated by the alpha emissions of a thermoelectric generator during space travel for cooling, the thermal degradation of the thermoelectric generator can be slowed. Slowing degradation allows missions to be longer with little additional expense or payload.

  16. International Symposium on Site Characterization for CO2 Geological Storage

    E-Print Network [OSTI]

    Tsang, Chin-Fu

    2006-01-01

    CONSTRAIN CO2 INJECTION FEASIBILITY: TEAPOT DOME EOR PILOTEOR, and coupled process modeling will investigate the total system including preliminary estimates of CO2

  17. Wind Energy Management System EMS Integration Project: Incorporating Wind Generation and Load Forecast Uncertainties into Power Grid Operations

    SciTech Connect (OSTI)

    Makarov, Yuri V.; Huang, Zhenyu; Etingov, Pavel V.; Ma, Jian; Guttromson, Ross T.; Subbarao, Krishnappa; Chakrabarti, Bhujanga B.

    2010-01-01

    The power system balancing process, which includes the scheduling, real time dispatch (load following) and regulation processes, is traditionally based on deterministic models. Since the conventional generation needs time to be committed and dispatched to a desired megawatt level, the scheduling and load following processes use load and wind and solar power production forecasts to achieve future balance between the conventional generation and energy storage on the one side, and system load, intermittent resources (such as wind and solar generation), and scheduled interchange on the other side. Although in real life the forecasting procedures imply some uncertainty around the load and wind/solar forecasts (caused by forecast errors), only their mean values are actually used in the generation dispatch and commitment procedures. Since the actual load and intermittent generation can deviate from their forecasts, it becomes increasingly unclear (especially, with the increasing penetration of renewable resources) whether the system would be actually able to meet the conventional generation requirements within the look-ahead horizon, what the additional balancing efforts would be needed as we get closer to the real time, and what additional costs would be incurred by those needs. To improve the system control performance characteristics, maintain system reliability, and minimize expenses related to the system balancing functions, it becomes necessary to incorporate the predicted uncertainty ranges into the scheduling, load following, and, in some extent, into the regulation processes. It is also important to address the uncertainty problem comprehensively by including all sources of uncertainty (load, intermittent generation, generators’ forced outages, etc.) into consideration. All aspects of uncertainty such as the imbalance size (which is the same as capacity needed to mitigate the imbalance) and generation ramping requirement must be taken into account. The latter unique features make this work a significant step forward toward the objective of incorporating of wind, solar, load, and other uncertainties into power system operations. Currently, uncertainties associated with wind and load forecasts, as well as uncertainties associated with random generator outages and unexpected disconnection of supply lines, are not taken into account in power grid operation. Thus, operators have little means to weigh the likelihood and magnitude of upcoming events of power imbalance. In this project, funded by the U.S. Department of Energy (DOE), a framework has been developed for incorporating uncertainties associated with wind and load forecast errors, unpredicted ramps, and forced generation disconnections into the energy management system (EMS) as well as generation dispatch and commitment applications. A new approach to evaluate the uncertainty ranges for the required generation performance envelope including balancing capacity, ramping capability, and ramp duration has been proposed. The approach includes three stages: forecast and actual data acquisition, statistical analysis of retrospective information, and prediction of future grid balancing requirements for specified time horizons and confidence levels. Assessment of the capacity and ramping requirements is performed using a specially developed probabilistic algorithm based on a histogram analysis, incorporating all sources of uncertainties of both continuous (wind and load forecast errors) and discrete (forced generator outages and start-up failures) nature. A new method called the “flying brick” technique has been developed to evaluate the look-ahead required generation performance envelope for the worst case scenario within a user-specified confidence level. A self-validation algorithm has been developed to validate the accuracy of the confidence intervals.

  18. Low-Cost High-Concentration Photovoltaic Systems for Utility Power Generation

    SciTech Connect (OSTI)

    McConnell, R.; Garboushian, V.; Gordon, R.; Dutra, D.; Kinsey, G.; Geer, S.; Gomez, H.; Cameron, C.

    2012-03-31

    Under DOE's Technology Pathway Partnership (TPP) program, Amonix, Inc. developed a new generation of high-concentration photovoltaic systems using multijunction technology and established the manufacturing capacity needed to supply multi-megawatt power plants buing using the new Amonix 7700-series solar energy systems. For this effort, Amonix Collaborated with a variety of suppliers and partners to complete project tasks. Subcontractors included: Evonik/Cyro; Hitek; the National Renewable Energy Laboratory (NREL); Raytech; Spectrolab; UL; University of Nevada, Las Vegas; and TUV Rheinland PTL. The Amonix TPP tasks included: Task 1: Multijunction Cell Optimization for Field Operation, Task 2: Fresnel Lens R&D, Task 3: Cell Package Design & Production, Task 4: Standards Compliance and Reliability Testing, Task 5: Receiver Plate Production, Task 6: MegaModule Performance, Task 7: MegaModule Cost Reduction, Task 8: Factory Setup and MegaModule Production, Task 9: Tracker and Tracking Controller, Task 10: Installation and Balance of System (BOS), Task 11: Field Testing, and Task 12: Solar Advisor Modeling and Market Analysis. Amonix's TPP addressed nearly the complete PV value chain from epitaxial layer design and wafer processing through system design, manufacturing, deployment and O&M. Amonix has made progress toward achieving these reduced costs through the development of its 28%+ efficient MegaModule, reduced manufacturing and installation cost through design for manufacturing and assembly, automated manufacturing processes, and reduced O&M costs. Program highlights include: (1) Optimized multijunction cell and cell package design to improve performance by > 10%; (2) Updated lens design provided 7% increased performance and higher concentration; (3) 28.7% DC STC MegaModule efficiency achieved in Phase II exceeded Phase III performance goal; (4) New 16' focal length MegaModule achieved target materials and manufacturing cost reduction; (5) Designed and placed into production 25 MW/yr manufacturing capacity for complete MegaModules, including cell packages, receiver plates, and structures with lenses; (6) Designed and deployed Amonix 7700 series systems rated at 63 kW PTC ac and higher. Based on an LCOE assessment using NREL's Solar Advisor Model, Amonix met DOE's LCOE targets: Amonix 2011 LCOE 12.8 cents/kWh (2010 DOE goal 10-15); 2015 LCOE 6.4 cents/kWh (2015 goal 5-7) Amonix and TPP participants would like to thank the U.S. Department of Energy Solar Energy Technology Program for funding received under this program through Agreement No. DE-FC36-07GO17042.

  19. Distributed Energy Resources On-Site Optimization for Commercial Buildings with Electric and Thermal Storage Technologies

    E-Print Network [OSTI]

    Stadler, Michael

    2008-01-01

    Gas-Fired Distributed Energy Resource Characterizations”,and J.L. Edwards, “Distributed Energy Resources CustomerN ATIONAL L ABORATORY Distributed Energy Resources On-Site

  20. FEMP Offers Training on Federal On-Site Renewable Power Purchase...

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

    and restrictions Consider the technical and site feasibility for an on-site renewable energy project Establish a multidisciplinary team to successfully implement the PPA...

  1. Power System Modeling of 20percent Wind-Generated Electricity by 2030

    E-Print Network [OSTI]

    Hand, Maureen

    2008-01-01

    of wind and conventional energy technologies, transmission,wind versus the displaced conventional energy technologies,wind energy I. I NTRODUCTION Generating electricity from wind technology

  2. Power System Modeling of 20percent Wind-Generated Electricity by 2030

    E-Print Network [OSTI]

    Hand, Maureen

    2008-01-01

    Contribution to U.S. Electricity Supply. National Renewable20% of the nation's electricity from wind technology byTERMS wind-generated electricity; wind energy; 20% wind

  3. Power System Modeling of 20percent Wind-Generated Electricity by 2030

    E-Print Network [OSTI]

    Hand, Maureen

    2008-01-01

    fuel price forecast Coal prices follow AEO 2007 referencecoal- and natural gas-based electricity generation analyzed here include decreased natural gas prices,

  4. Renewable build-up pathways for the US: Generation costs are not system costs

    E-Print Network [OSTI]

    Jacobson, Mark

    for backup power plants in a fully renewable setting are hydro- electric power, geothermal power, and to some Large-scale integration of renewable power generation Renewable power generation Optimal mix of wind optimized pathways for the build-up of wind and solar power for least backup energy needs as well

  5. Control Engineering Practice 10 (2002) 615624 Stabilizer design for industrial co-generation systems

    E-Print Network [OSTI]

    Marquez, Horacio J.

    2002-01-01

    ) to other processes to extract bitumen from oil sands, (ii) to numerous turbines to generate electricity bounds. Feedback control is thus used to ensure that the boilers generate enough steam and simultaneouslyControl Engineering Practice 10 (2002) 615­624 Stabilizer design for industrial co

  6. System Demonstration of Spiral: Generator for High-Performance Linear Transform Libraries

    E-Print Network [OSTI]

    Franchetti, Franz

    -specific language, program generation, rewriting, matrix algebra, automatic performance tuning, multithreading, SIMD been made towards this goal, in particular in two performance- critical domains: linear algebra] to generate code for small fixed size transform functions, called "codelets". However, all top-level recursive

  7. Revenue Maximization of Electricity Generation for a Wind Turbine Integrated with a Compressed Air Energy Storage System

    E-Print Network [OSTI]

    Li, Perry Y.

    Revenue Maximization of Electricity Generation for a Wind Turbine Integrated with a Compressed Air controller is developed for a Compressed Air Energy Storage (CAES) system integrated with a wind turbine of wind intermittency are investigated in [2] using convex optimization techniques. The optimal power flow

  8. SiC's Potential Impact on the Design of Wind Generation System , Leon M. Tolbert1,2

    E-Print Network [OSTI]

    Tolbert, Leon M.

    is that SiC devices would reduce substantially the cost of energy of large wind turbines that use powerSiC's Potential Impact on the Design of Wind Generation System Hui Zhang1 , Leon M. Tolbert1 National Laboratory Knoxville, TN 37932 Abstract -- The potential impact of SiC devices on a wind

  9. Building Airport Systems for the Next Generation Dealing with the uncertainties of airport development will require new strategies.

    E-Print Network [OSTI]

    Building Airport Systems for the Next Generation Dealing with the uncertainties of airport and passenger buildings, and most travelers know from experience the frequency of aircraft delays, missed skilled and smart people doing their best to make things better, why aren't we getting reasonable results

  10. Locating hot and cold-legs in a nuclear powered steam generation system

    DOE Patents [OSTI]

    Ekeroth, Douglas E. (Delmont, PA); Corletti, Michael M. (New Kensington, PA)

    1993-01-01

    A nuclear reactor steam generator includes a reactor vessel for heating water and a steam generator with a pump casing at the lowest point on the steam generator. A cold-leg pipe extends horizontally between the steam generator and the reactor vessel to return water from the steam generator to the reactor vessel. The bottom of the cold-leg pipe is at a first height above the bottom of the reactor vessel. A hot-leg pipe with one end connected to the steam generator and a second end connected to the reactor vessel has a first pipe region extending downwardly from the steam generator to a location between the steam generator and the reactor vessel at which a bottom of the hot-leg pipe is at a second height above the bottom of the reactor vessel. A second region extends from that location in a horizontal direction at the second height to the point at which the hot-leg pipe connects to the reactor vessel. A pump is attached to the casing at a location below the first and second heights and returns water from the steam generator to the reactor vessel over the cold-leg. The first height is greater than the second height and the bottom of the steam generator is at a height above the bottom of the reactor vessel that is greater than the first and second heights. A residual heat recovery pump is below the hot-leg and has an inlet line from the hot-leg that slopes down continuously to the pump inlet.

  11. Locating hot and cold-legs in a nuclear powered steam generation system

    DOE Patents [OSTI]

    Ekeroth, D.E.; Corletti, M.M.

    1993-11-16

    A nuclear reactor steam generator includes a reactor vessel for heating water and a steam generator with a pump casing at the lowest point on the steam generator. A cold-leg pipe extends horizontally between the steam generator and the reactor vessel to return water from the steam generator to the reactor vessel. The bottom of the cold-leg pipe is at a first height above the bottom of the reactor vessel. A hot-leg pipe with one end connected to the steam generator and a second end connected to the reactor vessel has a first pipe region extending downwardly from the steam generator to a location between the steam generator and the reactor vessel at which a bottom of the hot-leg pipe is at a second height above the bottom of the reactor vessel. A second region extends from that location in a horizontal direction at the second height to the point at which the hot-leg pipe connects to the reactor vessel. A pump is attached to the casing at a location below the first and second heights and returns water from the steam generator to the reactor vessel over the cold-leg. The first height is greater than the second height and the bottom of the steam generator is at a height above the bottom of the reactor vessel that is greater than the first and second heights. A residual heat recovery pump is below the hot-leg and has an inlet line from the hot-leg that slopes down continuously to the pump inlet. 2 figures.

  12. Aggregation improves learning: experiments in natural language generation for intelligent tutoring systems

    E-Print Network [OSTI]

    . #12;Figure 1: The furnace system Fig. 1 shows the furnace, one subsystem of the home heating system

  13. pahwa@ksu.edu Holonic Multi-agent Control of Power Distribution Systems of the Future

    E-Print Network [OSTI]

    Singh, Gurdip

    SUMMARY Power distribution systems (PDS) of the future will have homes with smart meters to monitor energy consumption, on-site grid-connected solar or wind generation, battery storage, and plug-in vehicles. The feeders will have advanced power electronic switching devices to control the system, sensors at strategic

  14. Carbon Capture and Water Emissions Treatment System (CCWESTRS) at Fossil-Fueled Electric Generating Plants

    SciTech Connect (OSTI)

    P. Alan Mays; Bert R. Bock; Gregory A. Brodie; L. Suzanne Fisher; J. Devereux Joslin; Donald L. Kachelman; Jimmy J. Maddox; N. S. Nicholas; Larry E. Shelton; Nick Taylor; Mark H. Wolfe; Dennis H. Yankee; John Goodrich-Mahoney

    2005-08-30

    The Tennessee Valley Authority (TVA), the Electric Power Research Institute (EPRI), and the Department of Energy-National Energy Technologies Laboratory (DOE-NETL) are evaluating and demonstrating integration of terrestrial carbon sequestration techniques at a coal-fired electric power plant through the use of Flue Gas Desulfurization (FGD) system gypsum as a soil amendment and mulch, and coal fly ash pond process water for periodic irrigation. From January to March 2002, the Project Team initiated the construction of a 40 ha Carbon Capture and Water Emissions Treatment System (CCWESTRS) near TVA's Paradise Fossil Plant on marginally reclaimed surface coal mine lands in Kentucky. The CCWESTRS is growing commercial grade trees and cover crops and is expected to sequester 1.5-2.0 MT/ha carbon per year over a 20-year period. The concept could be used to meet a portion of the timber industry's needs while simultaneously sequestering carbon in lands which would otherwise remain non-productive. The CCWESTRS includes a constructed wetland to enhance the ability to sequester carbon and to remove any nutrients and metals present in the coal fly ash process water runoff. The CCWESTRS project is a cooperative effort between TVA, EPRI, and DOE-NETL, with a total budget of $1,574,000. The proposed demonstration project began in October 2000 and has continued through December 2005. Additional funding is being sought in order to extend the project. The primary goal of the project is to determine if integrating power plant processes with carbon sequestration techniques will enhance carbon sequestration cost-effectively. This goal is consistent with DOE objectives to provide economically competitive and environmentally safe options to offset projected growth in U.S. baseline emissions of greenhouse gases after 2010, achieve the long-term goal of $10/ton of avoided net costs for carbon sequestration, and provide half of the required reductions in global greenhouse gases by 2025. Other potential benefits of the demonstration include developing a passive technology for water treatment for trace metal and nutrient release reductions, using power plant by-products to improve coal mine land reclamation and carbon sequestration, developing wildlife habitat and green-space around production facilities, generating Total Maximum Daily Load (TMDL) credits for the use of process water, and producing wood products for use by the lumber and pulp and paper industry. Project activities conducted during the five year project period include: Assessing tree cultivation and other techniques used to sequester carbon; Project site assessment; Greenhouse studies to determine optimum plant species and by-product application; Designing, constructing, operating, monitoring, and evaluating the CCWESTRS system; and Reporting (ongoing). The ability of the system to sequester carbon will be the primary measure of effectiveness, measured by accessing survival and growth response of plants within the CCWESTRS. In addition, costs associated with design, construction, and monitoring will be evaluated and compared to projected benefits of other carbon sequestration technologies. The test plan involves the application of three levels each of two types of power plant by-products--three levels of FGD gypsum mulch, and three levels of ash pond irrigation water. This design produces nine treatment levels which are being tested with two species of hardwood trees (sweet gum and sycamore). The project is examining the effectiveness of applications of 0, 8-cm, and 15-cm thick gypsum mulch layers and 0, 13 cm, and 25 cm of coal fly ash water for irrigation. Each treatment combination is being replicated three times, resulting in a total of 54 treatment plots (3 FGD gypsum levels X 3 irrigation water levels x 2 tree species x 3 replicates). Survival and growth response of plant species in terms of sequestering carbon in plant material and soil will be the primary measure of effectiveness of each treatment. Additionally, the ability of the site soils and unsaturated zone subsurface m

  15. Distributed generation

    SciTech Connect (OSTI)

    Ness, E.

    1999-09-02

    Distributed generation, locating electricity generators close to the point of consumption, provides some unique benefits to power companies and customers that are not available from centralized electricity generation. Photovoltaic (PV) technology is well suited to distributed applications and can, especially in concert with other distributed resources, provide a very close match to the customer demand for electricity, at a significantly lower cost than the alternatives. In addition to augmenting power from central-station generating plants, incorporating PV systems enables electric utilities to optimize the utilization of existing transmission and distribution.

  16. Communication systems, transceivers, and methods for generating data based on channel characteristics

    DOE Patents [OSTI]

    Forman, Michael A; Young, Derek

    2012-09-18

    Examples of methods for generating data based on a communications channel are described. In one such example, a processing unit may generate a first vector representation based in part on at least two characteristics of a communications channel. A constellation having at least two dimensions may be addressed with the first vector representation to identify a first symbol associated with the first vector representation. The constellation represents a plurality of regions, each region associated with a respective symbol. The symbol may be used to generate data, which may stored in an electronic storage medium and used as a cryptographic key or a spreading code or hopping sequence in a modulation technique.

  17. Development of an expert system for generating optimum floorplans for VLSI circuits 

    E-Print Network [OSTI]

    Mehta, Ketan R

    1987-01-01

    in the implementation of my system is also discussed. A. CURRENT VLSI DESIGN SYSTEMS The Hughes Automated Layout System The Hughes Automated Layout System (HAL) is an example of an in-house, custom built system for the specific needs of an organization... to thank my parents and my brother for their support and encouragement throughout my study at Texas A & M University. TABLE OF CONTENTS CHAPTER Page INTRODUCTION A. CURRENT VLSI DESIGN SYSTEMS The Hughes Automated Layout System Timberwolf Placement...

  18. Test factoring with amock: generating readable unit tests from system tests

    E-Print Network [OSTI]

    Glasser, David Samuel

    2007-01-01

    Automated unit tests are essential for the construction of reliable software, but writing them can be tedious. If the goal of test generation is to create a lasting unit test suite (and not just to optimize execution of ...

  19. Towards the Generations.of Rebul;tals in a Bayesian Argumentation System

    E-Print Network [OSTI]

    generated by BIAS, a user's rejoinder and BIAS' rebuttal. 1 The domain of implementation is a murder investigation where the question under consideration (the goal proposition) is "Did Mr Green murder Mr Body

  20. Robustness and Stability Optimization of Power Generating Kite Systems in a Periodic Pumping Mode

    E-Print Network [OSTI]

    on the ground while flying fast in a crosswind direction. We are searching for an intrinsically open-loop stable pulls as strong as possible on its cable slowly driving the generator while flying fast in a crosswind

  1. Self-powered wireless sensor system using MEMS piezoelectric micro power generator (PMPG)

    E-Print Network [OSTI]

    Xia, YuXin, M.B.A. Sloan School of Management.

    2006-01-01

    A thin-film lead zirconate titanate, Pb(Zr,Ti)03, MEMS Piezoelectric Micro Power Generator (PMPG) has been integrated with a commercial wireless sensor node (Telos), to demonstrate a self-powered RF temperature sensor ...

  2. Power System Modeling of 20percent Wind-Generated Electricity by 2030

    E-Print Network [OSTI]

    Hand, Maureen

    2008-01-01

    pulverized coal plants, combined cycle natural gas plants,natural gas plants, and combined cycle natural gas plants.generated largely from combined-cycle Capacity (GW) yd r as

  3. Distributed generation and demand side management : applications to transmission system operation 

    E-Print Network [OSTI]

    Hayes, Barry Patrick

    2013-07-01

    Electricity networks are undergoing a period of rapid change and transformation, with increased penetration levels of renewable-based distributed generation, and new influences on electricity end-use patterns from ...

  4. System for generating a beam of acoustic energy from a borehole, and applications thereof

    DOE Patents [OSTI]

    Vu, Cung Khac (Houston, TX); Sinha, Dipen N. (Los Alamos, NM); Pantea, Cristian (Los Alamos, NM); Nihei, Kurt T. (Oakland, CA); Schmitt, Denis P. (Katy, TX); Skelt, Christopher (Houston, TX)

    2012-07-31

    In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

  5. System for generating a beam of acoustic energy from a borehole, and applications thereof

    DOE Patents [OSTI]

    Vu, Cung Khac; Sinha, Dipen N.; Pantea, Cristian; Nihei, Kurt T.; Schmitt, Denis P.; Skelt, Christopher

    2012-09-04

    In some aspects of the invention, a device, positioned within a well bore, configured to generate and direct an acoustic beam into a rock formation around a borehole is disclosed. The device comprises a source configured to generate a first signal at a first frequency and a second signal at a second frequency; a transducer configured to receive the generated first and the second signals and produce acoustic waves at the first frequency and the second frequency; and a non-linear material, coupled to the transducer, configured to generate a collimated beam with a frequency equal to the difference between the first frequency and the second frequency by a non-linear mixing process, wherein the non-linear material includes one or more of a mixture of liquids, a solid, a granular material, embedded microspheres, or an emulsion.

  6. Electrical power systems (Guatemala). Electric power generation and distribution equipment, March 1991. Export trade information

    SciTech Connect (OSTI)

    Not Available

    1991-03-01

    The article analyzes the electrical power generation and distribution equipment market in Guatemala and contains the following subtopics: market assessment, competitive situation, market access, trade promotion opportunities, best sales prospects, and statistical data. The total market demand of electrical power generation and distribution equipment and materials in Guatemala increased from US $19.0 million in 1987 to $24.8 million in 1988 (30.5 percent).

  7. On Design and Realization of New Generation Misson-critial Application Systems 

    E-Print Network [OSTI]

    Mai, Zhibin

    2011-08-08

    Mission-critical system typically refers to a project or system for which the success is vital to the mission of the underlying organization. The failure or delayed completion of the tasks in mission-critical systems may ...

  8. Referring Expression Generation Challenge 2008 DIT System Descriptions J.D. Kelleher

    E-Print Network [OSTI]

    is the mechanism used to order the attributes for inclusion. 1.1 DIT-FBI System The DIT-FBI system selects the next

  9. Generated using version 3.0 of the official AMS LATEX template Wave-group forcing of a rip current system

    E-Print Network [OSTI]

    Kirby, James T.

    Generated using version 3.0 of the official AMS LATEX template Wave-group forcing of a rip current is found when12 the rip current system is forced near the resonant frequency for edge wave generation over on the wave-forced32 nonlinear shallow water equations. They found that the generation and destruction of surf

  10. Sample Documents for Federal On-Site Renewable Power Purchase Agreements

    Broader source: Energy.gov [DOE]

    To help streamline the on-site renewable power purchase agreement (PPA) process, the Federal Energy Management Program (FEMP) works with federal agencies and partners to assemble sample documents from PPA projects.

  11. UTILITY INVESTMENT IN ON-SITE SOLAR: RISK AND RETURN ANALYSIS FOR CAPITALIZATION AND FINANCING

    E-Print Network [OSTI]

    Kahn, E.

    2011-01-01

    electric back- for on-site solar may cost more on the marginAssumptions Solar Hot Water Heater Capital Cost AnnualThe Cost of Energy from Utility-Owned Solar Electric

  12. The Energy Resource Center: On-Site Technical Assistance and Training Programs for Texas School Districts 

    E-Print Network [OSTI]

    Roberts, M.; Sanders, M.

    1988-01-01

    in controlling a major operational expense -- the cost of energy -- through tailoring and implementing services to meet "real world" needs. On-site services available from the ERC range from basic training in analyzing utility bills, tracking energy consumption...

  13. Proposed On-Site Waste Disposal Facility (OSWDF) at the Portsmouth...

    Office of Environmental Management (EM)

    of Environmental Management (DOE-EM) External Technical Review of the Proposed On-Site Waste Disposal Facility (OSWDF) at the Portsmouth Gaseous Diffusion Plant Why DOE-EM Did...

  14. Investigating the Relationship between the Perceptions of Principals and Teachers on Site-Based Decision Making 

    E-Print Network [OSTI]

    Owens, Sandra Deshon

    2013-12-06

    The purpose of this record of study was to investigate the nature of relationships between the perceptions of principals and teachers on site-based decision making (SBDM) and to uncover patterns existing in relationships between and among state...

  15. I Tube, You Tube, Everybody Tubes: Analyzing the World's Largest User Generated Content Video System

    E-Print Network [OSTI]

    Ahn, Yong-Yeol

    , Design Keywords User Generated Content, Power-Law, Long Tail, VoD, P2P, Caching, Popularity Analysis otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission historically created and supplied by a lim- ited number of media producers, such as licensed broad- casters

  16. Second generation PFBC systems research and development: Phase 2, Topping combustor testing at UTSI

    SciTech Connect (OSTI)

    Johanson, N.R.; Foote, J.P.

    1992-12-01

    This report describes a second generation pressurized fluidized bed combustion (PFBC) power plant. The topping combustor testing is briefly described. The topping combustor burns low BTU gas produced from substoichiometric combustion of coal in a pressurized carbonizer. Char produced is burned in a PFBC.

  17. Second generation PFBC systems research and development: Phase 2, Topping combustor testing at UTSI

    SciTech Connect (OSTI)

    Johanson, N.R.; Foote, J.P.

    1992-01-01

    This report describes a second generation pressurized fluidized bed combustion (PFBC) power plant. The topping combustor testing is briefly described. The topping combustor burns low BTU gas produced from substoichiometric combustion of coal in a pressurized carbonizer. Char produced is burned in a PFBC.

  18. EIS-0416: Ivanpah Solar Electric Generating System, San Bernardino County, California

    Broader source: Energy.gov [DOE]

    This EIS analyzes DOE's decision to support a proposal from Solar Partners I, II, IV, and VIII, limited liability corporations formed by BrightSource Energy (BrightSource), to construct and operate a solar thermal electric generating facility in San Bernardino County, California on BLM Land.

  19. Modeling and Control of Co-generation Power Plants: A Hybrid System Approach

    E-Print Network [OSTI]

    Ferrari-Trecate, Giancarlo

    of turning on/off the gas and steam turbine, the operat- ing constraints (minimum up and down times and produces electric power through the expansion of the gas in the gas turbine; the steam cycle is supplied with the output ex- haust gas from the gas turbine and generates both electricity and steam for the industrial

  20. Resolution Improvement and Pattern Generator Development for the Maskless Micro-Ion-Beam Reduction Lithography System

    E-Print Network [OSTI]

    Jiang, Ximan

    2006-01-01

    ion is 10.0 eV. Assuming the surface charging generates aneV 84 mrad Switching pad and connection wire: 0 volt Insulator 1.0 volt surface chargingeV in this region. Consequently, ion trajectories are very sensitive to the surface charging

  1. Analysis and Improvement of the securing RFID systems conforming to EPC Class 1 Generation 2

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    . In general terms, the tag comprises a wireless microchip with a very limited computational and storage from the electrical field generated by the reader. Semi-passive tags use a battery, but that battery by the reader. Active tags use a battery for both communication and running the i

  2. Modeling and Control of Co-generation Power Plants: A Hybrid System Approach

    E-Print Network [OSTI]

    Ferrari-Trecate, Giancarlo

    : they are more efficient and flexible than more conventional configurations based on boilers and steam turbines of hot gasses in a (gas!) turbine. The steam cycle is supplied with the still hot exhaust gases of the gas turbine and generates both electricity and steam for the industrial processes. Clearly

  3. Dynamically Generating Web Application Fragments from Page Specification of Software Systems

    E-Print Network [OSTI]

    Zdun, Uwe

    Dynamically Generating Web Application Fragments from Page Templates Uwe Zdun Specification descriptions in the page templates. 1 Introduction Web-based applications usually play an important, business for transporting the created HTML pages to the client. Some web-based applications only serve web-based clients

  4. SYSTEM WIDE ECONOMIC BENEFITS OF DISTRIBUTED GENERATION IN THE NEW ENGLAND

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Numbers With Location · Substation Capacities and Installed Loads Without this information, the study that would be useful is: Cost and location of all planned transmission and distribution upgrades was to evaluate the benefits and costs associated with a distributed generation unit from the perspectives

  5. Effect of real-time electricity pricing on renewable generators and system emissions

    E-Print Network [OSTI]

    Connolly, Jeremiah P. (Jeremiah Peter)

    2008-01-01

    Real-time retail pricing (RTP) of electricity, in which the retail price is allowed to vary with very little time delay in response to changes in the marginal cost of generation, offers expected short-run and long-run ...

  6. A Multi-Agent Solution to Distribution System Management by Considering Distributed Generators

    E-Print Network [OSTI]

    Zhang, Minjie

    has both advantages and disadvantages [7]. On one hand, DGs can supply power to the network near such as solar and wind, the distribution network may perform differently from the conventionally ex- pected]. Typically, the bulk generation is the only energy resource to a DN, and the direction of the power flow

  7. Heat recovery steam generator outlet temperature control system for a combined cycle power plant

    SciTech Connect (OSTI)

    Martens, A.; Myers, G.A.; McCarty, W.L.; Wescott, K.R.

    1986-04-01

    This patent describes a command cycle electrical power plant including: a steam turbine and at least one set comprising a gas turbine, an afterburner and a heat recovery steam generator having an attemperator for supplying from an outlet thereof to the steam turbine superheated steam under steam turbine operating conditions requiring predetermined superheated steam temperature, flow and pressure; with the gas turbine and steam turbine each generating megawatts in accordance with a plant load demand; master control means being provided for controlling the steam turbine and the heat recovery steam generator so as to establish the steam operating conditions; the combination of: first control means responsive to the gas inlet temperature of the heat recovery steam generator and to the plant load demand for controlling the firing of the afterburner; second control means responsive to the superheated steam predetermined temperature and to superheated steam temperature from the outlet for controlling the attemperator between a closed and an open position; the first and second control means being operated concurrently to maintain the superheated steam outlet temperature while controlling the load of the gas turbine independently of the steam turbine operating conditions.

  8. Wind Turbine Generator System Acoustic Noise Test Report for the Gaia Wind 11-kW Wind Turbine

    SciTech Connect (OSTI)

    Huskey, A.

    2011-11-01

    This report details the acoustic noise test conducted on the Gaia-Wind 11-kW wind turbine at the National Wind Technology Center. The test turbine is a two- bladed, downwind wind turbine with a rated power of 11 kW. The test turbine was tested in accordance with the International Electrotechnical Commission standard, IEC 61400-11 Ed 2.1 2006-11 Wind Turbine Generator Systems -- Part 11 Acoustic Noise Measurement Techniques.

  9. Pacies (Part Code Identification Expert System): an expert system to generate part codes for the selection of small part feeding and orienting devices for use in automatic assembly 

    E-Print Network [OSTI]

    Chen, Yu-Tong

    1985-01-01

    Coding System B: Existing Expert Systems C: Listing of Consultation Driver D: Listing of the Knowledge Base E: Listing of SIMPLE Front-End Relations F: Procedure to Log on the System G: Procedure to Query the Same Question VITA 74 78 79 90 104... look-up, generates a three-digit part code for a part based upon its shape, important features, and symmetries. The part code is used in a table look-up procedure to determine the proper feeding and orienting device for the part. Hence, the part...

  10. Real-Time Trajectory Generation for Constrained Nonlinear Dynamical Systems Using

    E-Print Network [OSTI]

    Murray, Richard M.

    Systems, California Institute of Technology, · John Doyle, Control and Dynamical Systems, Electrical possible without the love and support of my wife. Mali, you are by far the best thing that has ever

  11. Dialogue-Oriented Review Summary Generation for Spoken Dialogue Recommendation Systems

    E-Print Network [OSTI]

    Liu, Jingjing

    In this paper we present an opinion summarization technique in spoken dialogue systems. Opinion mining has been well studied for years, but very few have considered its application in spoken dialogue systems. Review ...

  12. 3rd Generation SCR System Using Solid Ammonia Storage and Direct Gas Dosing

    Broader source: Energy.gov [DOE]

    SCR system provides direct ammonia gas dosing for optimal SCR performance with simplified and flexible exhaust layout.

  13. FUEL CELL SYSTEM ECONOMICS: COMPARING THE COSTS OF GENERATING POWER WITH STATIONARY

    E-Print Network [OSTI]

    Kammen, Daniel M.

    , University of California, 4152 Etcheverry Hall, Berkeley, CA 94720, USA Abstract This investigation examines the economics of producing electricity from proton-exchange membrane (PEM) fuel cell systems under various of natural gas, electricity prices, fuel cell and reformer system costs, and fuel cell system durability

  14. Published in Future Generation Computer Systems (15), 623 (1999), Technical Note DHPC-042.

    E-Print Network [OSTI]

    Hawick, Ken

    1999-01-01

    describe our DISCWorld system for wide-area, high-performance metacomputing in which we adopt a high: metacomputing; high-performance computing; wide-area networks; applications services. 1 Introduction Distributed Information Systems Control World (DISCWorld) system for wide-area, service-based, high-performance

  15. NERI Final Project Report: On-Line Intelligent Self-Diagnostic Monitoring System for Next Generation Nuclear Power Plants

    SciTech Connect (OSTI)

    Bond, Leonard J.; Jarrell, Donald B.; Koehler, Theresa M.; Meador, Richard J.; Sisk, Daniel R.; Hatley, Darrel D.; Watkins, Kenneth S.; Chai, Jangbom; Kim, Wooshik

    2003-06-20

    This project provides a proof-of-principle technology demonstration for SDMS, where a distributed suite of sensors is integrated with active components and passive structures of types expected to be encountered in next generation nuclear power reactor and plant systems. The project employs state-of-the-art operational sensors, advanced stressor-based instrumentation, distributed computing, RF data network modules and signal processing to improve the monitoring and assessment of the power reactor system and gives data that is used to provide prognostics capabilities.

  16. OASIS4: A Coupling Software for Next Generation Earth System Modelling Ren Redler (1), Sophie Valcke (2) and Hubert Ritzdorf (3)

    E-Print Network [OSTI]

    OASIS4: A Coupling Software for Next Generation Earth System Modelling René Redler (1), Sophie system modelling, Geosci. Model. Dev., 3, 87 ­ 104 Link ­ https://oasistrac.cerfacs.fr Financial support ­ R. Redler, S. Valcke and H. Ritzdorf, 2010: OASIS4 ­ a coupling software for next generation earth

  17. Environmental Assessment and Finding of No Significant Impact: On-Site Treatment of Low Level Mixed Waste

    SciTech Connect (OSTI)

    N /A

    1999-03-22

    The Department of Energy (DOE) has prepared an environmental assessment (EA) (DOE/EA-1292) to evaluate the proposed treatment of low level mixed waste (LLMW) at the Rocky Flats Environmental Technology Site (Site). The purpose of the action is to treat LLMW in order to meet the Land Disposal Restrictions specified by the Resource Conservation and Recovery Act and the waste acceptance criteria of the planned disposal site(s). Approximately 17,000 cubic meters (m{sup 3}) of LLMW are currently stored at the Site. Another 65,000 m{sup 3}of LLMW are likely to be generated by Site closure activities (a total of 82,000 m{sup 3} of LLMW). About 35,000 m{sup 3} can be directly disposed of off-site without treatment, and most of the remaining 47,000 m{sup 3} of LLMW can be treated at off-site treatment, storage, and disposal facilities. However, some LLMW will require treatment on-site, either because it does not meet shipping requirements or because off-site treatment is not available for these particular types of LLMW. Currently, this LLMW is stored at the Site pending the development and implementation of effective treatment processes. The Site needs to treat this LLMW on-site prior to shipment to off-site disposal facilities, in order to meet the DOE long-term objective of clean up and closure of the Site. All on-site treatment of LLMW would comply with applicable Federal and State laws designed to protect public health and safety and to enhance protection of the environment. The EA describes and analyzes the environmental effects of the proposed action (using ten mobile treatment processes to treat waste on-site), and the alternatives of treating waste onsite (using two fixed treatment processes), and of taking no action. The EA was the subject of a public comment period from February 3 to 24, 1999. No written or other comments regarding the EA were received.

  18. Techno-economic analysis of using corn stover to supply heat and power to a corn ethanol plant - Part 2: Cost of heat and power generation systems

    SciTech Connect (OSTI)

    Mani, Sudhagar [University of Georgia; Sokhansanj, Shahabaddine [ORNL; Togore, Sam [U.S. Department of Energy; Turhollow Jr, Anthony F [ORNL

    2010-03-01

    This paper presents a techno-economic analysis of corn stover fired process heating (PH) and the combined heat and power (CHP) generation systems for a typical corn ethanol plant (ethanol production capacity of 170 dam3). Discounted cash flow method was used to estimate both the capital and operating costs of each system and compared with the existing natural gas fired heating system. Environmental impact assessment of using corn stover, coal and natural gas in the heat and/or power generation systems was also evaluated. Coal fired process heating (PH) system had the lowest annual operating cost due to the low fuel cost, but had the highest environmental and human toxicity impacts. The proposed combined heat and power (CHP) generation system required about 137 Gg of corn stover to generate 9.5 MW of electricity and 52.3 MW of process heat with an overall CHP efficiency of 83.3%. Stover fired CHP system would generate an annual savings of 3.6 M$ with an payback period of 6 y. Economics of the coal fired CHP system was very attractive compared to the stover fired CHP system due to lower fuel cost. But the greenhouse gas emissions per Mg of fuel for the coal fired CHP system was 32 times higher than that of stover fired CHP system. Corn stover fired heat and power generation system for a corn ethanol plant can improve the net energy balance and add environmental benefits to the corn to ethanol biorefinery.

  19. Studies on a self-excited closed cycle MHD generator for pulse power system

    SciTech Connect (OSTI)

    Harada, N.

    1998-07-01

    The authors have been proposing to use a closed cycle disk MHD generator as an alternative of an open cycle linear generator for applications to portable pulsed power supply because of its special advantages of durability and reliability. Steady state operation with applied magnetic field mode, magnet coil design and dynamic behavior of a disk type MHD generator in self-excited mode were studied numerically. One-dimensional numerical code based on MacCormack method were used. Thermal input to the disk channel was 40MW and working medium was argon seeded with potassium driven by the nonequilibrium plasma generator. At first, steady state solutions were obtained for both initial applied field of 0.7T and for full magnetic field 4T. For any load conditions examined, generator behaved quite stable and output current reaches its certain final value. Based on these steady state output current, they successfully designed suitable magnet coils. Current density was about 15A/mm{sup 2} . This value was quite reasonable and durable even for relatively long duration. With the designed magnet coils, dynamic behavior of the disk generator was studied. For transition from initial applied field mode to self-excited mode, switching was succeeded and there was no abnormal fluctuations in current trace. Noticeable instability did not develop in this period. However, in self-excited mode, the output current significantly increases and becomes much higher than the rated current of 1720A at B=4T after time=4sec., in spite of the fact that the output current increases steadily and very smoothly until that time. Sudden development of ionization instability was suggested from distributions of electron temperature and number density. They tried to limit excitation current to the magnet coils exactly to the designed value using bypass circuit to prevent from development of ionization instability. Then stable operation in the self-excited mode was successfully achieved. Further the authors confirmed the stable operation in SE mode without additional control when the value of initial applied field was increased to 4T. Further, if its value was higher than 2.5T, output current stably increased up to the designed value and converged to the designed operating conditions. Such a behavior was not completely clarified so far and they need to study further that how to reach and/or how to design stable operation in SE mode.

  20. On-board ammonia generation and exhaust after treatment system using same

    DOE Patents [OSTI]

    Driscoll, Josh (Dunlap, IL); Robel, Wade J. (Peoria, IL); Brown, Cory A. (Pekin, IL); Urven, Jr., Roger L. (Colona, IL)

    2010-03-30

    Often NOx selective catalysts that use ammonia to reduce NOx within exhaust to a harmless gas require on-board storage of ammonia which can be hazardous and inconvenient. In order to generate ammonia in exhaust, the present disclosure increases a NOx concentration in exhaust from at least one combustion chamber, at least in part, by injecting fuel in a predetermined increased NOx generation sequence that includes a first injection during non-auto ignition conditions and a second injection during auto ignition conditions. At least a portion of the NOx is converted to ammonia by passing at least a portion of the exhaust with the increased NOx concentration over an ammonia-producing catalyst.

  1. Systems and methods that generate height map models for efficient three dimensional reconstruction from depth information

    DOE Patents [OSTI]

    Frahm, Jan-Michael; Pollefeys, Marc Andre Leon; Gallup, David Robert

    2015-12-08

    Methods of generating a three dimensional representation of an object in a reference plane from a depth map including distances from a reference point to pixels in an image of the object taken from a reference point. Weights are assigned to respective voxels in a three dimensional grid along rays extending from the reference point through the pixels in the image based on the distances in the depth map from the reference point to the respective pixels, and a height map including an array of height values in the reference plane is formed based on the assigned weights. An n-layer height map may be constructed by generating a probabilistic occupancy grid for the voxels and forming an n-dimensional height map comprising an array of layer height values in the reference plane based on the probabilistic occupancy grid.

  2. SE-72/AS-72 generator system based on Se extraction/ As reextraction

    DOE Patents [OSTI]

    Fassbender, Michael Ernst; Ballard, Beau D

    2013-09-10

    The preparation of a .sup.72Se/.sup.72As radioisotope generator involves forming an acidic aqueous solution of an irradiated alkali bromide target such as a NaBr target, oxidizing soluble bromide in the solution to elemental bromine, removing the elemental bromine, evaporating the resulting solution to a residue, removing hydrogen chloride from the residue, forming an acidic aqueous solution of the residue, adding a chelator that selectively forms a chelation complex with selenium, and extracting the chelation complex from the acidic aqueous solution into an organic phase. As the .sup.72Se generates .sup.72As in the organic phase, the .sup.72As may be extracted repeatedly from the organic phase with an aqueous acid solution.

  3. USE OF PRODUCED WATER IN RECIRCULATING COOLING SYSTEMS AT POWER GENERATING FACILITIES

    SciTech Connect (OSTI)

    Kent Zammit; Michael N. DiFilippo

    2005-01-01

    The purpose of this study is to evaluate produced water as a supplemental source of water for the San Juan Generating Station (SJGS). This study incorporates elements that identify produced water volume and quality, infrastructure to deliver it to SJGS, treatment requirements to use it at the plant, delivery and treatment economics, etc. SJGS, which is operated by Public Service of New Mexico (PNM) is located about 15 miles northwest of Farmington, New Mexico. It has four units with a total generating capacity of about 1,800 MW. The plant uses 22,400 acre-feet of water per year from the San Juan River with most of its demand resulting from cooling tower make-up. The plant is a zero liquid discharge facility and, as such, is well practiced in efficient water use and reuse. For the past few years, New Mexico has been suffering from a severe drought. Climate researchers are predicting the return of very dry weather over the next 30 to 40 years. Concern over the drought has spurred interest in evaluating the use of otherwise unusable saline waters. Produced water is generated nationally as a byproduct of oil and gas production. Seven states generate 90 percent of the produced water in the continental US. About 37 percent of the sources documented in the US Geological Survey's (USGS) Produced Waters Database have a TDS of less than 30,000 mg/l. This is significant because produced water treatment for reuse in power plants was found to be very costly above 30,000 mg/l TDS. For the purposes of this report, produced water treatment was assessed using the technologies evaluated for the San Juan Generating Station (SJGS) in Deliverable 3, Treatment and Disposal Analysis. Also, a methodology was developed to readily estimate capital and operating costs for produced water treatment. Two examples are presented to show how the cost estimating methodology can be used to evaluate the cost of treatment of produced water at power plants close to oil and gas production.

  4. Radioisotope thermoelectric generator transportation system safety analysis report for packaging. Volumes 1 and 2

    SciTech Connect (OSTI)

    Ferrell, P.C.

    1996-04-18

    This SARP describes the RTG Transportation System Package, a Type B(U) packaging system that is used to transport an RTG or similar payload. The payload, which is included in this SARP, is a generic, enveloping payload that specifically encompasses the General Purpose Heat Source (GPHS) RTG payload. The package consists of two independent containment systems mounted on a shock isolation transport skid and transported within an exclusive-use trailer.

  5. Real-Time Systems Development with SDL and Next Generation Validation Tools

    E-Print Network [OSTI]

    Sinnott, R.O.

    Sinnott,R.O. Proceedings of Real Time and Embedded Systems Workshop, 3-6 December 2001, London, England. IEEE Computer Society Press

  6. Compressed Air System Upgrade Generates Significant Energy Savings at a Steel Mill

    SciTech Connect (OSTI)

    2010-06-25

    In 1996, U.S. Steel completed a project in which the main compressed air system at their Edgar Thomson plant in Braddock, Pennsylvania was overhauled.

  7. Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal...

    Open Energy Info (EERE)

    selected because it would provide both cost and performance advantages. The evaporative system, however, consumes a significant amount of water during heat rejection that would...

  8. GENII (Generation II): The Hanford Environmental Radiation Dosimetry Software System: Volume 3, Code maintenance manual: Hanford Environmental Dosimetry Upgrade Project

    SciTech Connect (OSTI)

    Napier, B.A.; Peloquin, R.A.; Strenge, D.L.; Ramsdell, J.V.

    1988-09-01

    The Hanford Environmental Dosimetry Upgrade Project was undertaken to incorporate the internal dosimetry models recommended by the International Commission on Radiological Protection (ICRP) in updated versions of the environmental pathway analysis models used at Hanford. The resulting second generation of Hanford environmental dosimetry computer codes is compiled in the Hanford Environmental Dosimetry System (Generation II, or GENII). This coupled system of computer codes is intended for analysis of environmental contamination resulting from acute or chronic releases to, or initial contamination of, air, water, or soil, on through the calculation of radiation doses to individuals or populations. GENII is described in three volumes of documentation. This volume is a Code Maintenance Manual for the serious user, including code logic diagrams, global dictionary, worksheets to assist with hand calculations, and listings of the code and its associated data libraries. The first volume describes the theoretical considerations of the system. The second volume is a Users' Manual, providing code structure, users' instructions, required system configurations, and QA-related topics. 7 figs., 5 tabs.

  9. The Transformational Satellite Communications System (TSAT) is the DoD's next generation geosynchronous sat-

    E-Print Network [OSTI]

    Touch, Joe

    . TSAT System Overview The TSAT system constitutes a core component of the Global Information Grid (GIG). The GIG architecture uses satellite communications (SATCOM) to achieve the goals of: real-time "sensor and Homeland Defense; and connectivity of all Global Information Grid (GIG) assets. Figure 1 illustrates

  10. Metal Hydride Thermal Storage: Reversible Metal Hydride Thermal Storage for High-Temperature Power Generation Systems

    SciTech Connect (OSTI)

    2011-12-05

    HEATS Project: PNNL is developing a thermal energy storage system based on a Reversible Metal Hydride Thermochemical (RMHT) system, which uses metal hydride as a heat storage material. Heat storage materials are critical to the energy storage process. In solar thermal storage systems, heat can be stored in these materials during the day and released at night—when the sun is not out—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in these materials at night and released to produce electricity during daytime peak-demand hours. PNNL’s metal hydride material can reversibly store heat as hydrogen cycles in and out of the material. In a RHMT system, metal hydrides remain stable in high temperatures (600- 800°C). A high-temperature tank in PNNL’s storage system releases heat as hydrogen is absorbed, and a low-temperature tank stores the heat until it is needed. The low-cost material and simplicity of PNNL’s thermal energy storage system is expected to keep costs down. The system has the potential to significantly increase energy density.

  11. LANMAS: A new generation computerized MC&A system for the DOE complex

    SciTech Connect (OSTI)

    Erkkila, B.; Boor, M.; Whiteson, R.; Smith, J.; Painter, J. [Los Alamos National Lab., NM (United States); Claborn, J. [Fifth Gear Media Corp., Dallas, TX (United States)

    1996-09-01

    The Local Area Network Material Accountability System (LANMAS) is a network-based nuclear material accountability system that runs in a client/server mode. The LANMAS core software was developed at Los Alamos National Laboratory and released in a production mode in March 1996. Several Department of Energy sites are working to implement the core program and modify it by adding additional functionality and customizing the user interface. These modifications to the core software are made to meet site-specific accountability needs and to adapt the system to conform to the work environment at the individual sites. The result is the successful implementation of a new computerized accounting system at each site. This paper will provide an update on current activities, performance issues, core software support issues, and the status of the various site systems and will discuss the future direction of the LANMAS project.

  12. Coal-fired power generation: Proven technologies and pollution control systems

    SciTech Connect (OSTI)

    Balat, M. [University of Mah, Trabzon (Turkey)

    2008-07-01

    During the last two decades, significant advances have been made in the reduction of emissions from coal-fired power generating plants. New technologies include better understanding of the fundamentals of the formation and destruction of criteria pollutants in combustion processes (low nitrogen oxides burners) and improved methods for separating criteria pollutants from stack gases (FGD technology), as well as efficiency improvements in power plants (clean coal technologies). Future demand for more environmentally benign electric power, however, will lead to even more stringent controls of pollutants (sulphur dioxide and nitrogen oxides) and greenhouse gases such as carbon dioxide.

  13. System for generating two-dimensional masks from a three-dimensional model using topological analysis

    DOE Patents [OSTI]

    Schiek, Richard (Albuquerque, NM)

    2006-06-20

    A method of generating two-dimensional masks from a three-dimensional model comprises providing a three-dimensional model representing a micro-electro-mechanical structure for manufacture and a description of process mask requirements, reducing the three-dimensional model to a topological description of unique cross sections, and selecting candidate masks from the unique cross sections and the cross section topology. The method further can comprise reconciling the candidate masks based on the process mask requirements description to produce two-dimensional process masks.

  14. Air feed tube support system for a solid oxide fuel cell generator

    DOE Patents [OSTI]

    Doshi, Vinod B. (Monroeville, PA); Ruka, Roswell J. (Pittsburgh, PA); Hager, Charles A. (Zelienople, PA)

    2002-01-01

    A solid oxide fuel cell generator (12), containing tubular fuel cells (36) with interior air electrodes (18), where a supporting member (82) containing a plurality of holes (26) supports oxidant feed tubes (51), which pass from an oxidant plenum (52") into the center of the fuel cells, through the holes (26) in the supporting member (82), where a compliant gasket (86) around the top of the oxidant feed tubes and on top (28) of the supporting member (82) helps support the oxidant feed tubes and center them within the fuel cells, and loosen the tolerance for centering the air feed tubes.

  15. Wind turbine/generator set having a stator cooling system located between stator frame and active coils

    DOE Patents [OSTI]

    Bevington, Christopher M.; Bywaters, Garrett L.; Coleman, Clint C.; Costin, Daniel P.; Danforth, William L.; Lynch, Jonathan A.; Rolland, Robert H.

    2012-11-13

    A wind turbine comprising an electrical generator that includes a rotor assembly. A wind rotor that includes a wind rotor hub is directly coupled to the rotor assembly via a simplified connection. The wind rotor and generator rotor assembly are rotatably mounted on a central spindle via a bearing assembly. The wind rotor hub includes an opening having a diameter larger than the outside diameter of the central spindle adjacent the bearing assembly so as to allow access to the bearing assembly from a cavity inside the wind rotor hub. The spindle is attached to a turret supported by a tower. Each of the spindle, turret and tower has an interior cavity that permits personnel to traverse therethrough to the cavity of the wind rotor hub. The wind turbine further includes a frictional braking system for slowing, stopping or keeping stopped the rotation of the wind rotor and rotor assembly.

  16. Investigation of techniques to build generation system models for reliability evaluation 

    E-Print Network [OSTI]

    Gubbala, Nagalakshmi V.

    1994-01-01

    of the Proposed Method 1. Two State Unit 2. Three State Unit . 3. n State Unit B. Results and Discussion 1. Case Studies Using IEEE-RTS 2. Case Studies Using EPRI Synthetic System 3. The System Described in Reference [8] 4. CPU Times for Different Models... Transform 1. Count of Operations 3 7 10 11 12 13 16 16 17 20 24 25 27 30 33 39 39 40 43 44 46 48 50 VJn CHAPTER Page 2. Derivation D. Mathematical Comparison E. System Studies 1. IEEE-RTS 2. EPRI Synthetic 3. Results 4...

  17. Reliability of materials in MEMS : residual stress and adhesion in a micro power generation system.

    SciTech Connect (OSTI)

    Moody, Neville Reid; Kennedy, Marian S. (Washington State University, Pullman, WA); Bahr, David F. (Washington State University, Pullman, WA)

    2007-09-01

    The reliability of thin film systems is important to the continued development of microelectronic and micro-electro-mechanical systems (MEMS). The reliability of these systems is often tied to the ability of the films to remain adhered to its substrate. By measuring the amount of energy to separate the film from the substrate, researchers can predicts film lifetimes. Recent work has resulted in several different testing techniques to measure this energy including spontaneous buckling, indentation induced delamination and four point bending. This report focuses on developing quantifiable adhesion measurements for multiple thin film systems used in MEMS and other thin film systems of interest to Sandia programs. First, methods of accurately assessing interfacial toughness using stressed overlayer methods are demonstrated using both the W/Si and Au/Si systems. For systems where fracture only occurs along the interface, such as Au/Si, the calculated fracture energies between different tests are identical if the energy put into the system is kept near the needed strain energy to cause delamination. When the energy in the system is greater than needed to cause delamination, calculated adhesion energies can increase by a factor of three due to plastic deformation. Dependence of calculated adhesion energies on applied energy in the system was also shown when comparisons of four point bending and stressed overlayer test methods were completed on Pt/Si systems. The fracture energies of Pt/Ti/SiO{sub 2} were studied using four-point bending and compressive overlayers. Varying the thickness of the Ti film from 2 to 17 nm in a Pt/Ti/SiO{sub 2} system, both test methods showed an increase of adhesion energy until the nominal Ti thickness was 12nm. Then the adhesion energy began to decrease. While the trends in toughness are similar, the magnitude of the toughness values measured between the test methods is not the same, demonstrating the difficulty in extracting mode I toughness as mixed mode loading approaches mode II conditions.

  18. Temporal and spatial distribution of fishes in the upper Galveston Bay System with particular reference to the cooling water system of Cedar Bayou Generating Station 

    E-Print Network [OSTI]

    Holt, Scott Allen

    1976-01-01

    1I:MPORAL AND SPATIAL DISTRIBUTION OF FISHES IN THE UPPER GALVESTON BAY SYSTEM WITH PARTICULAR REFERENCE TO THE COOLING WATER SYSTEM OF CEDAR BAYOU GENERATING STATION A Thesis by SCOTT ALLEN HOLT Submitted to the Graduate College of Texas A... This research was made possible by a grant from Hou-ton Lighting 6 Power Company to the Department of Wildlife and Fisheries Scier. es and the Texas Agricultural Experiment Station (Project 1869-2781) . I would like to express my appreciation to Dr. Kirk...

  19. Fuel Cell Power Model Version 2: Startup Guide, System Designs, and Case Studies. Modeling Electricity, Heat, and Hydrogen Generation from Fuel Cell-Based Distributed Energy Systems

    SciTech Connect (OSTI)

    Steward, D.; Penev, M.; Saur, G.; Becker, W.; Zuboy, J.

    2013-06-01

    This guide helps users get started with the U.S. Department of Energy/National Renewable Energy Laboratory Fuel Cell Power (FCPower) Model Version 2, which is a Microsoft Excel workbook that analyzes the technical and economic aspects of high-temperature fuel cell-based distributed energy systems with the aim of providing consistent, transparent, comparable results. This type of energy system would provide onsite-generated heat and electricity to large end users such as hospitals and office complexes. The hydrogen produced could be used for fueling vehicles or stored for later conversion to electricity.

  20. Pressurized Fluidized Bed Combustion Second-Generation System Research and Development

    SciTech Connect (OSTI)

    A. Robertson; D. Horazak; R. Newby; H. Goldstein

    2002-11-01

    Research is being conducted under United States Department of Energy (DOE) Contract DE-AC21-86MC21023 to develop a new type of coal-fired plant for electric power generation. This new type of plant--called a Second-Generation or Advanced Pressurized Circulating Fluidized Bed Combustion (APCFB) plant--offers the promise of efficiencies greater than 45% (HHV), with both emissions and a cost of electricity that are significantly lower than conventional pulverized-coal-fired plants with scrubbers. The APCFB plant incorporates the partial gasification of coal in a carbonizer, the combustion of carbonizer char in a pressurized circulating fluidized bed boiler (PCFB), and the combustion of carbonizer syngas in a topping combustor to achieve gas turbine inlet temperatures of 2300 F and higher. A conceptual design was previously prepared for this new type of plant and an economic analysis presented, all based on the use of a Siemens Westinghouse W501F gas turbine with projected carbonizer, PCFB, and topping combustor performance data. Having tested these components at the pilot plant stage, the referenced conceptual design is being updated to reflect more accurate performance predictions together with the use of the more advanced Siemens Westinghouse W501G gas turbine and a conventional 2400 psig/1050 F/1050 F/2-1/2 in. steam turbine. This report describes the updated plant which is projected to have an HHV efficiency of 48% and identifies work completed for the October 2001 through September 2002 time period.

  1. Method and system for generating a beam of acoustic energy from a borehole, and applications thereof

    DOE Patents [OSTI]

    Johnson Paul A. (Santa Fe, NM); Ten Cate, James A. (Los Alamos, NM); Guyer, Robert (Reno, NV); Le Bas, Pierre-Yves (Los Alamos, NM); Vu, Cung (Houston, TX); Nihei, Kurt (Oakland, CA); Schmitt, Denis P. (Katy, TX); Skelt, Christopher (Houston, TX)

    2012-02-14

    A compact array of transducers is employed as a downhole instrument for acoustic investigation of the surrounding rock formation. The array is operable to generate simultaneously a first acoustic beam signal at a first frequency and a second acoustic beam signal at a second frequency different than the first frequency. These two signals can be oriented through an azimuthal rotation of the array and an inclination rotation using control of the relative phases of the signals from the transmitter elements or electromechanical linkage. Due to the non-linearity of the formation, the first and the second acoustic beam signal mix into the rock formation where they combine into a collimated third signal that propagates in the formation along the same direction than the first and second signals and has a frequency equal to the difference of the first and the second acoustic signals. The third signal is received either within the same borehole, after reflection, or another borehole, after transmission, and analyzed to determine information about rock formation. Recording of the third signal generated along several azimuthal and inclination directions also provides 3D images of the formation, information about 3D distribution of rock formation and fluid properties and an indication of the dynamic acoustic non-linearity of the formation.

  2. Power System Modeling of 20% Wind-Generated Electricity by 2030: Preprint

    SciTech Connect (OSTI)

    Hand, M.; Blair, N.; Bolinger, M.; Wiser, R.; O'Connell, R.; Hern, T.; Miller, B.

    2008-06-01

    This paper shows the results of the Wind Energy Deployment System model used to estimate the costs and benefits associated with producing 20% of the nation's electricity from wind technology by 2030.

  3. Incorporating operational flexibility into electric generation planning : impacts and methods for system design and policy analysis

    E-Print Network [OSTI]

    Palmintier, Bryan S. (Bryan Stephen)

    2013-01-01

    This dissertation demonstrates how flexibility in hourly electricity operations can impact long-term planning and analysis for future power systems, particularly those with substantial variable renewables (e.g., wind) or ...

  4. An expert system for generating terminal area flight paths for arriving aircraft

    E-Print Network [OSTI]

    Sadoune, Michel

    Air-traffic congestion and frequent saturation of major airports require improved Air Traffic Control procedures to make the flow of traffic more uniform and increase system capacity. Advanced technologies allow an increased ...

  5. Extending and automating a systems-theoretic hazard analysis for requirements generation and analysis

    E-Print Network [OSTI]

    Thomas, John P., IV

    2013-01-01

    Systems Theoretic Process Analysis (STPA) is a powerful new hazard analysis method designed to go beyond traditional safety techniques-such as Fault Tree Analysis (FTA)-that overlook important causes of accidents like ...

  6. Control Scheme Modifications Increase Efficiency of Steam Generation System at Exxon Mobil Gas Plant

    SciTech Connect (OSTI)

    2002-01-01

    This case study highlights control scheme modifications made to the steam system at ExxonMobil's Mary Ann Gas Plant in Mobile, Alabama, which improved steam flow efficiency and reduced energy costs.

  7. 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 ...

  8. Power System Modeling of 20percent Wind-Generated Electricity by 2030

    E-Print Network [OSTI]

    Hand, Maureen

    2008-01-01

    2003. U.S. Department of Energy (2008). 20% Wind Energy by2030: Increasing Wind Energy’s Contribution to U.S.shows the results of the Wind Energy Deployment System model

  9. Bayesian Belief Network (BBN)-based advisory system development for steam generator replacement project management

    E-Print Network [OSTI]

    Kim, Dohyoung, 1970-

    2002-01-01

    The growing need for improved project management technique points to the usefulness of a knowledge-base advisory system to help project managers understand current and future project status and optimize decisions based ...

  10. Wind Turbine Generator System Power Performance Test Report for the Entegrity EW50 Wind Turbine

    SciTech Connect (OSTI)

    Smith, J.; Huskey, A.; Jager, D.; Hur, J.

    2011-05-01

    Report on the results of the power performance test that the National Renewable Energy Laboratory (NREL) conducted on Entegrity Wind System Inc.'s EW50 small wind turbine.

  11. Observations on A Technology Roadmap for Generation IV Nuclear Energy Systems: Technical Roadmap Report

    Office of Energy Efficiency and Renewable Energy (EERE)

    The development of advanced nuclear energy systems in the U.S. will depend greatly on the continued success of currently operating light water nuclear power plants and the ordering of new...

  12. Advanced Inverter Technology for High Penetration Levels of PV Generation in Distribution Systems

    SciTech Connect (OSTI)

    Schauder, C.

    2014-03-01

    This subcontract report was completed under the auspices of the NREL/SCE High-Penetration Photovoltaic (PV) Integration Project, which is co-funded by the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) and the California Solar Initiative (CSI) Research, Development, Demonstration, and Deployment (RD&D) program funded by the California Public Utility Commission (CPUC) and managed by Itron. This project is focused on modeling, quantifying, and mitigating the impacts of large utility-scale PV systems (generally 1-5 MW in size) that are interconnected to the distribution system. This report discusses the concerns utilities have when interconnecting large PV systems that interconnect using PV inverters (a specific application of frequency converters). Additionally, a number of capabilities of PV inverters are described that could be implemented to mitigate the distribution system-level impacts of high-penetration PV integration. Finally, the main issues that need to be addressed to ease the interconnection of large PV systems to the distribution system are presented.

  13. 2nd Generation PFBC Systems R&D Phase 2 and Phase 3

    SciTech Connect (OSTI)

    Archie Robertson

    2000-03-17

    No work was performed; the two remaining Multi Annular Swirl Burner test campaigns are on hold pending selection of a new test facility (replacement for the shut down UTSI burner test facility) and identification of associated testing costs. The Second-Generation PFB Combustion Plant conceptual design prepared in 1987 is being updated to reflect the benefit of pilot plant test data and the latest advances in gas turbine technology. The updated plant is being designed to operate with 95 percent sulfur capture and a single Siemens Westinghouse (SW) 501G gas turbine. Using carbonizer and gas turbine data generated by Foster Wheeler (FW) and SW respectively, Parsons Energy and Chemicals Group prepared preliminary plant heat and materials based on carbonizer operating temperatures of 1700 and 1800 F and found the former to yield the higher plant efficiency. As a result, 1700 F has been selected as the preferred operating condition for the carbonizer. The previous first cut plant heat and material balance was refined and it predicts a 47.7% plant efficiency (HHV) with a net power output of 421.1 MWe. The latter includes a plant auxiliary load estimated to be 23.5 MWe or 5.26% of the gross plant power and a transformer loss of 1.5 MWe. Coal drying is through natural gas combustion, and the thermal energy input of the natural gas has also been included in the heat rate calculation. Figure 1 presents the plant preliminary full load heat and material balance. In this arrangement, evaporation and primary steam superheating tube surfaces are placed in both the pressurized circulating fluidized bed boiler (PCFB) and the gas turbine heat recovery steam generator (HRSG). The superheated steam from these units is mixed and then heated to 1050 F in the PCFB finishing superheater. With regard to steam reheating, the primary stage is located at the front of the HRSG and the final stage is located in the PCFB. Although this circuitry arrangement appears workable at full load, minimum load must be checked next to see if rearrangement is needed. Plant start up and load following discussions indicated that below about 15 percent gas turbine load, the latter would transition from steam to air cooling.

  14. Entanglement generation in a system of two atomic quantum dots coupled to a pool of interacting bosons

    E-Print Network [OSTI]

    Anna Posazhennikova; Reinhard Birmuske; Martin Bruderer; Wolfgang Belzig

    2012-12-12

    We discuss entanglement generation in a closed system of one or two atomic quantum dots (qubits) coupled via Raman transitions to a pool of cold interacting bosons. The system exhibits rich entanglement dynamics, which we analyze in detail in an exact quantum mechanical treatment of the problem. The bipartite setup of only one atomic quantum dot coupled to a pool of bosons turns out to be equivalent to two qubits which easily get entangled being initially in a product state. We show that both the number of bosons in the pool and the boson-boson interaction crucially affect the entanglement characteristics of the system. The tripartite system of two atomic quantum dots and a pool of bosons reduces to a qubit-qutrit-qubit realization. We consider entanglement possibilities of the pure system as well as of reduced ones by tracing out one of the constituents, and show how the entanglement can be controlled by varying system parameters. We demonstrate that the qutrit, as expected, plays a leading role in entangling of the two qubits and the maximum entanglement depends in a nontrivial way on the pool characteristics.

  15. DESIGN AND LAYOUT CONCEPTS FOR COMPACT, FACTORY-PRODUCED, TRANSPORTABLE, GENERATION IV REACTOR SYSTEMS

    SciTech Connect (OSTI)

    Mynatt Fred R.; Townsend, L.W.; Williamson, Martin; Williams, Wesley; Miller, Laurence W.; Khan, M. Khurram; McConn, Joe; Kadak, Andrew C.; Berte, Marc V.; Sawhney, Rapinder; Fife, Jacob; Sedler, Todd L.; Conway, Larry E.; Felde, Dave K.

    2003-11-12

    The purpose of this research project is to develop compact (100 to 400 MWe) Generation IV nuclear power plant design and layout concepts that maximize the benefits of factory-based fabrication and optimal packaging, transportation and siting. The reactor concepts selected were compact designs under development in the 2000 to 2001 period. This interdisciplinary project was comprised of three university-led nuclear engineering teams identified by reactor coolant type (water, gas, and liquid metal) and a fourth Industrial Engineering team. The reactors included a Modular Pebble Bed helium-cooled concept being developed at MIT, the IRIS water-cooled concept being developed by a team led by Westinghouse Electric Company, and a Lead-Bismuth-cooled concept developed by UT. In addition to the design and layout concepts this report includes a section on heat exchanger manufacturing simulations and a section on construction and cost impacts of proposed modular designs.

  16. System and method for generating a deselect mapping for a focal plane array

    DOE Patents [OSTI]

    Bixler, Jay V; Brandt, Timothy G; Conger, James L; Lawson, Janice K

    2013-05-21

    A method for generating a deselect mapping for a focal plane array according to one embodiment includes gathering a data set for a focal plane array when exposed to light or radiation from a first known target; analyzing the data set for determining which pixels or subpixels of the focal plane array to add to a deselect mapping; adding the pixels or subpixels to the deselect mapping based on the analysis; and storing the deselect mapping. A method for gathering data using a focal plane array according to another embodiment includes deselecting pixels or subpixels based on a deselect mapping; gathering a data set using pixels or subpixels in a focal plane array that are not deselected upon exposure thereof to light or radiation from a target of interest; and outputting the data set.

  17. USE OF PRODUCED WATER IN RECIRCULATING COOLING SYSTEMS AT POWER GENERATING FACILITIES

    SciTech Connect (OSTI)

    Michael N. DiFilippo

    2004-08-01

    The purpose of this study is to evaluate produced water as a supplemental source of water for the San Juan Generating Station (SJGS). This study incorporates elements that identify produced water volume and quality, infrastructure to deliver it to SJGS, treatment requirements to use it at the plant, delivery and treatment economics, etc. SJGS, which is operated by Public Service of New Mexico (PNM) is located about 15 miles northwest of Farmington, New Mexico. It has four units with a total generating capacity of about 1,800 MW. The plant uses 22,400 acre-feet of water per year from the San Juan River with most of its demand resulting from cooling tower make-up. The plant is a zero liquid discharge facility and, as such, is well practiced in efficient water use and reuse. For the past few years, New Mexico has been suffering from a severe drought. Climate researchers are predicting the return of very dry weather over the next 30 to 40 years. Concern over the drought has spurred interest in evaluating the use of otherwise unusable saline waters. Deliverable 2 focuses on transportation--the largest obstacle to produced water reuse in the San Juan Basin (the Basin). Most of the produced water in the Basin is stored in tanks at the well head and must be transported by truck to salt water disposal (SWD) facilities prior to injection. Produced water transportation requirements from the well head to SJGS and the availability of existing infrastructure to transport the water are discussed in this deliverable.

  18. Deriving the quark condensate within a finite Fermi system from the generating functional of chiral perturbation theory

    E-Print Network [OSTI]

    Mariana Kirchbach; Andreas Wirzba

    1996-11-01

    The generating functional of heavy baryon chiral perturbation theory at order O(Q^2) in the mean field approximation (with a pseudoscalar source coupling which is consistent with the PCAC-Ward identities on the current quark level) has been exploited to derive Migdal's in--medium pion propagator. It is shown that the prediction for the density dependence of the quark condensate obtained on the composite hadron level by embedding PCAC within the framework of Migdal's approach to finite Fermi systems is identical to that resulting from QCD.

  19. Deriving the quark condensate within a finite Fermi system from the generating functional of chiral perturbation theory

    E-Print Network [OSTI]

    Kirchbach, M; Kirchbach, Mariana; Wirzba, Andreas

    1996-01-01

    The generating functional of heavy baryon chiral perturbation theory at order {\\cal O}(Q^2) in the mean field approximation (with a pseudoscalar source coupling which is consistent with the PCAC-Ward identities on the current quark level) has been exploited to derive Migdal's in--medium pion propagator. It is shown that the prediction for the density dependence of the quark condensate obtained on the composite hadron level by embedding PCAC within the framework of Migdal's approach to finite Fermi systems is identical to that resulting from QCD.

  20. Development and Demonstration of an Innovative Thermal Energy Storage System for Baseload Power Generation

    SciTech Connect (OSTI)

    D. Y. Goswami

    2012-09-04

    The objective of this project is to research and develop a thermal energy storage system (operating range 3000C ���¢�������� 450 0C ) based on encapsulated phase change materials (PCM) that can meet the utility-scale base-load concentrated solar power plant requirements at much lower system costs compared to the existing thermal energy storage (TES) concepts. The major focus of this program is to develop suitable encapsulation methods for existing low-cost phase change materials that would provide a cost effective and reliable solution for thermal energy storage to be integrated in solar thermal power plants. This project proposes a TES system concept that will allow for an increase of the capacity factor of the present CSP technologies to 75% or greater and reduce the cost to less than $20/kWht.

  1. Resolution Improvement and Pattern Generator Development for theMaskless Micro-Ion-Beam Reduction Lithography System

    SciTech Connect (OSTI)

    Jiang, Ximan

    2006-05-18

    The shrinking of IC devices has followed the Moore's Law for over three decades, which states that the density of transistors on integrated circuits will double about every two years. This great achievement is obtained via continuous advance in lithography technology. With the adoption of complicated resolution enhancement technologies, such as the phase shifting mask (PSM), the optical proximity correction (OPC), optical lithography with wavelength of 193 nm has enabled 45 nm printing by immersion method. However, this achievement comes together with the skyrocketing cost of masks, which makes the production of low volume application-specific IC (ASIC) impractical. In order to provide an economical lithography approach for low to medium volume advanced IC fabrication, a maskless ion beam lithography method, called Maskless Micro-ion-beam Reduction Lithography (MMRL), has been developed in the Lawrence Berkeley National Laboratory. The development of the prototype MMRL system has been described by Dr. Vinh Van Ngo in his Ph.D. thesis. But the resolution realized on the prototype MMRL system was far from the design expectation. In order to improve the resolution of the MMRL system, the ion optical system has been investigated. By integrating a field-free limiting aperture into the optical column, reducing the electromagnetic interference and cleaning the RF plasma, the resolution has been improved to around 50 nm. Computational analysis indicates that the MMRL system can be operated with an exposure field size of 0.25 mm and a beam half angle of 1.0 mrad on the wafer plane. Ion-ion interactions have been studied with a two-particle physics model. The results are in excellent agreement with those published by the other research groups. The charge-interaction analysis of MMRL shows that the ion-ion interactions must be reduced in order to obtain a throughput higher than 10 wafers per hour on 300-mm wafers. In addition, two different maskless lithography strategies have been studied. The dependence of the throughput with the exposure field size and the speed of the mechanical stage has been investigated. In order to perform maskless lithography, different micro-fabricated pattern generators have been developed for the MMRL system. Ion beamlet switching has been successfully demonstrated on the MMRL system. A positive bias voltage around 10 volts is sufficient to switch off the ion current on the micro-fabricated pattern generators. Some unexpected problems, such as the high-energy secondary electron radiations, have been discovered during the experimental investigation. Thermal and structural analysis indicates that the aperture displacement error induced by thermal expansion can satisfy the 3{delta} CD requirement for lithography nodes down to 25 nm. The cross-talking effect near the surface and inside the apertures of the pattern generator has been simulated in a 3-D ray-tracing code. New pattern generator design has been proposed to reduce the cross-talking effect. In order to eliminate the surface charging effect caused by the secondary electrons, a new beam-switching scheme in which the switching electrodes are immersed in the plasma has been demonstrated on a mechanically fabricated pattern generator.

  2. Monte-Carlo Simulator and Ancillary Response Generator of Suzaku XRT/XIS System for Spatially Extended Source Analysis

    E-Print Network [OSTI]

    Y. Ishisaki; Y. Maeda; R. Fujimoto; M. Ozaki; K. Ebisawa; T. Takahashi; Y. Ueda; Y. Ogasaka; A. Ptak; K. Mukai; K. Hamaguchi; M. Hirayama; T. Kotani; H. Kubo; R. Shibata; M. Ebara; A. Furuzawa; R. Iizuka; H. Inoue; H. Mori; S. Okada; Y. Yokoyama; H. Matsumoto; H. Nakajima; H. Yamaguchi; N. Anabuki; N. Tawa; M. Nagai; S. Katsuda; K. Hayashida; A. Bamba; E. D. Miller; K. Sato; N. Y. Yamasaki

    2006-10-04

    We have developed a framework for the Monte-Carlo simulation of the X-Ray Telescopes (XRT) and the X-ray Imaging Spectrometers (XIS) onboard Suzaku, mainly for the scientific analysis of spatially and spectroscopically complex celestial sources. A photon-by-photon instrumental simulator is built on the ANL platform, which has been successfully used in ASCA data analysis. The simulator has a modular structure, in which the XRT simulation is based on a ray-tracing library, while the XIS simulation utilizes a spectral "Redistribution Matrix File" (RMF), generated separately by other tools. Instrumental characteristics and calibration results, e.g., XRT geometry, reflectivity, mutual alignments, thermal shield transmission, build-up of the contamination on the XIS optical blocking filters (OBF), are incorporated as completely as possible. Most of this information is available in the form of the FITS (Flexible Image Transport System) files in the standard calibration database (CALDB). This simulator can also be utilized to generate an "Ancillary Response File" (ARF), which describes the XRT response and the amount of OBF contamination. The ARF is dependent on the spatial distribution of the celestial target and the photon accumulation region on the detector, as well as observing conditions such as the observation date and satellite attitude. We describe principles of the simulator and the ARF generator, and demonstrate their performance in comparison with in-flight data.

  3. Advanced power generation systems for the 21st Century: Market survey and recommendations for a design philosophy

    SciTech Connect (OSTI)

    Andriulli, J.B.; Gates, A.E.; Haynes, H.D.; Klett, L.B.; Matthews, S.N.; Nawrocki, E.A.; Otaduy, P.J.; Scudiere, M.B.; Theiss, T.J.; Thomas, J.F.; Tolbert, L.M.; Yauss, M.L.; Voltz, C.A.

    1999-11-01

    The purpose of this report is to document the results of a study designed to enhance the performance of future military generator sets (gen-sets) in the medium power range. The study includes a market survey of the state of the art in several key component areas and recommendations comprising a design philosophy for future military gen-sets. The market survey revealed that the commercial market is in a state of flux, but it is currently or will soon be capable of providing the technologies recommended here in a cost-effective manner. The recommendations, if implemented, should result in future power generation systems that are much more functional than today's gen-sets. The number of differing units necessary (both family sizes and frequency modes) to cover the medium power range would be decreased significantly, while the weight and volume of each unit would decrease, improving the transportability of the power source. Improved fuel economy and overall performance would result from more effective utilization of the prime mover in the generator. The units would allow for more flexibility and control, improved reliability, and more effective power management in the field.

  4. EA-1862: Oneida Seven Generation Corporation Waste-To-Energy System, Ashwaubenon, Wisconsin

    Broader source: Energy.gov [DOE]

    Oneida’s Energy Recovery Project would construct and operate a solid waste-to-electricity power plant on vacant property within the Bayport Industrial Center in the City of Green Bay, Brown County, Wisconsin. This energy recovery process would involve bringing municipal solid waste into the plant for sizing (shredding), sorting (removing recyclable material), and conveying into one of three pyrolytic gasification systems.

  5. On The Impact of Communication Delays on Power System Automatic Generation Control Performance

    E-Print Network [OSTI]

    Dominguez-Garcia, Alejandro

    and physical components that, under visions such as the US Department of Energy Smart Grid [1], are likely examples. I. INTRODUCTION The motivation for this work lies in the tight coupling between cyber of the smart grid vision. Supervisory control and data acquisition (SCADA) systems, as computer

  6. Future Generation Computer Systems 25 (2009) 511524 Contents lists available at ScienceDirect

    E-Print Network [OSTI]

    Sakellariou, Rizos

    2009-01-01

    problems [2]. It does not refer only to resources such as CPU power, storage facilities and memory-oriented system for distributed data querying and integration on Grids$ Carmela Comitoa, , Anastasios Gounarisb November 2008 Available online 7 December 2008 Keywords: Data Grids Distributed query processing Wide

  7. Impacts of Large-Scale Wind Generators Penetration on the Voltage Stability of Power Systems

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    on the operation of existing transmission network . The European Wind Energy Association (EWEA) projects 230 GW closer to their limits, using flexible AC transmission system devices (FACTS), and also due- rently interconnected into the existing transmission network of 220kV voltage level with higher installed

  8. Superconductivity for Electric Systems Program Review LANL Contributions to GE HTS Generator

    E-Print Network [OSTI]

    Review Heat pipe integration offers high payoff rotor cooling alternative · Heat pipe has a two Rotating heat pipe configuration has unique operating characteristics · Bent heat pipe ­ On-axis condenser for Electric Systems Program Review Stationary heat pipe tests were necessary to determine performance impact

  9. Agent-Based Simulation of Distribution Systems with High Penetration of Photovoltaic Generation

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    permitting the integrated study of retail and wholesale power markets operating over realistically rendered of strategic trading in restructured wholesale power markets with congestion managed by locational marginal appliances and equipment. The resulting integrated retail and wholesale power system test bed will enable us

  10. Economic Inefficiency of Passive Transmission Rights in Congested Electricity Systems with Competitive Generation

    E-Print Network [OSTI]

    Oren, Shmuel S.

    Economic Inefficiency of Passive Transmission Rights in Congested Electricity Systems (1997), pp. 63-83 Published by: International Association for Energy Economics Stable URL: http@jstor.org. . International Association for Energy Economics is collaborating with JSTOR to digitize, preserve and extend

  11. Managing Model Data Introduced Uncertainties in Simulator Predictions for Generation IV Systems via Optimum Experimental Design

    SciTech Connect (OSTI)

    Turinsky, Paul J; Abdel-Khalik, Hany S; Stover, Tracy E

    2011-03-31

    An optimization technique has been developed to select optimized experimental design specifications to produce data specifically designed to be assimilated to optimize a given reactor concept. Data from the optimized experiment is assimilated to generate posteriori uncertainties on the reactor concept’s core attributes from which the design responses are computed. The reactor concept is then optimized with the new data to realize cost savings by reducing margin. The optimization problem iterates until an optimal experiment is found to maximize the savings. A new generation of innovative nuclear reactor designs, in particular fast neutron spectrum recycle reactors, are being considered for the application of closing the nuclear fuel cycle in the future. Safe and economical design of these reactors will require uncertainty reduction in basic nuclear data which are input to the reactor design. These data uncertainty propagate to design responses which in turn require the reactor designer to incorporate additional safety margin into the design, which often increases the cost of the reactor. Therefore basic nuclear data needs to be improved and this is accomplished through experimentation. Considering the high cost of nuclear experiments, it is desired to have an optimized experiment which will provide the data needed for uncertainty reduction such that a reactor design concept can meet its target accuracies or to allow savings to be realized by reducing the margin required due to uncertainty propagated from basic nuclear data. However, this optimization is coupled to the reactor design itself because with improved data the reactor concept can be re-optimized itself. It is thus desired to find the experiment that gives the best optimized reactor design. Methods are first established to model both the reactor concept and the experiment and to efficiently propagate the basic nuclear data uncertainty through these models to outputs. The representativity of the experiment to the design concept is quantitatively determined. A technique is then established to assimilate this data and produce posteriori uncertainties on key attributes and responses of the design concept. Several experiment perturbations based on engineering judgment are used to demonstrate these methods and also serve as an initial generation of the optimization problem. Finally, an optimization technique is developed which will simultaneously arrive at an optimized experiment to produce an optimized reactor design. Solution of this problem is made possible by the use of the simulated annealing algorithm for solution of optimization problems. The optimization examined in this work is based on maximizing the reactor cost savings associated with the modified design made possible by using the design margin gained through reduced basic nuclear data uncertainties. Cost values for experiment design specifications and reactor design specifications are established and used to compute a total savings by comparing the posteriori reactor cost to the a priori cost plus the cost of the experiment. The optimized solution arrives at a maximized cost savings.

  12. Theory and experiments on the effects of perturbations on nonlinear chemical systems: Generation of multiple attractors and efficiency

    SciTech Connect (OSTI)

    Hjelmfelt, A.; Harding, R.H.; Tsujimoto, K.K.; Ross, J. (Department of Chemistry, Stanford University, Stanford, California 94305 (US))

    1990-03-15

    Periodic perturbations are applied to the input fluxes of reactants in a system which exhibits autonomous oscillations, the combustion of acetaldehyde (ACH) and oxygen, and a system which exhibits damped oscillations, the combustion of methane and oxygen. The ACH system is studied by experiments and numerical analysis and the methane system is studied by numerical analysis. The periodic perturbations are in the form of a two-term Fourier series. Such perturbations may generate multiple attractors, which are either periodic or chaotic. We discuss two types of bistable responses: a new phase bistability, in which a subharmonic frequency is added to a sinusoidal perturbation at different phases relative to the periodic response; and jump phenomena, in which the resonant frequency of a nonlinear oscillator depends on the amplitude of the periodic perturbation. Both the ACH and the methane systems confirm the phase bistability. The additional complex behavior of bistability due to jump phenomena is seen only in calculations in the methane system. In both types of bistability a hysteresis loop is formed as we vary the form of the periodic perturbation. In the methane system, we find period doubling to chaos occuring on one branch of the hysteresis loop while the other branch remains periodic. The methane system has been studied in the context of the efficiency of power production. We calculate the efficiency corresponding to each bistable attractor and find one branch of each pair to be the more efficient mode of operation. In the case of the coexisting periodic and chaotic attractors the chaotic attractor is the more efficient mode of operation.

  13. Photon Correlations Generated by Inelastic Scattering in a One-Dimensional Waveguide Coupled to Three-Level Systems

    E-Print Network [OSTI]

    Fang, Yao-Lung L

    2015-01-01

    We study photon correlations generated by scattering from three-level systems (3LS) in one dimension. The two systems studied are a 3LS in a semi-infinite waveguide (3LS plus a mirror) and two 3LS in an infinite waveguide (double 3LS). Our scattering approach naturally connects photon correlation effects with inelastically scattered photons; it corresponds to input-output theory in the weak-probe limit. At the resonance where electromagnetically induced transparency (EIT) occurs, we find that no photons are scattered inelastically and hence there are no induced correlations. Slightly away from EIT, the total inelastically scattered flux is large, being substantially enhanced due to the additional interference paths. This enhancement carries over to the two-photon correlation function, which exhibits non-classical behavior such as strong bunching with a very long time-scale. The long time scale originates from the slow-light effect associated with EIT.

  14. NEXT GENERATION TURBINE PROGRAM

    SciTech Connect (OSTI)

    William H. Day

    2002-05-03

    The Next Generation Turbine (NGT) Program's technological development focused on a study of the feasibility of turbine systems greater than 30 MW that offer improvement over the 1999 state-of-the-art systems. This program targeted goals of 50 percent turndown ratios, 15 percent reduction in generation cost/kW hour, improved service life, reduced emissions, 400 starts/year with 10 minutes to full load, and multiple fuel usage. Improvement in reliability, availability, and maintainability (RAM), while reducing operations, maintenance, and capital costs by 15 percent, was pursued. This program builds on the extensive low emissions stationary gas turbine work being carried out by Pratt & Whitney (P&W) for P&W Power Systems (PWPS), which is a company under the auspices of the United Technologies Corporation (UTC). This study was part of the overall Department of Energy (DOE) NGT Program that extends out to the year 2008. A follow-on plan for further full-scale component hardware testing is conceptualized for years 2002 through 2008 to insure a smooth and efficient transition to the marketplace for advanced turbine design and cycle technology. This program teamed the National Energy Technology Laboratory (NETL), P&W, United Technologies Research Center (UTRC), kraftWork Systems Inc., a subcontractor on-site at UTRC, and Multiphase Power and Processing Technologies (MPPT), an off-site subcontractor. Under the auspices of the NGT Program, a series of analyses were performed to identify the NGT engine system's ability to serve multiple uses. The majority were in conjunction with a coal-fired plant, or used coal as the system fuel. Identified also was the ability of the NGT system to serve as the basis of an advanced performance cycle: the humid air turbine (HAT) cycle. The HAT cycle is also used with coal gasification in an integrated cycle HAT (IGHAT). The NGT systems identified were: (1) Feedwater heating retrofit to an existing coal-fired steam plant, which could supply both heat and peaking power (Block 2 engine); (2) Repowering of an older coal-fired plant (Block 2 engine); (3) Gas-fired HAT cycle (Block 1 and 2 engines); (4) Integrated gasification HAT (Block 1 and 2 engines). Also under Phase I of the NGT Program, a conceptual design of the combustion system has been completed. An integrated approach to cycle optimization for improved combustor turndown capability has been employed. The configuration selected has the potential for achieving single digit NO{sub x}/CO emissions between 40 percent and 100 percent load conditions. A technology maturation plan for the combustion system has been proposed. Also, as a result of Phase I, ceramic vane technology will be incorporated into NGT designs and will require less cooling flow than conventional metallic vanes, thereby improving engine efficiency. A common 50 Hz and 60 Hz power turbine was selected due to the cost savings from eliminating a gearbox. A list of ceramic vane technologies has been identified for which the funding comes from DOE, NASA, the U.S. Air Force, and P&W.

  15. On the generation of triaxiality in the collapse of cold spherical self-gravitating systems

    E-Print Network [OSTI]

    Labini, Francesco Sylos; Joyce, Michael

    2015-01-01

    Initially cold and spherically symmetric self-gravitating systems may give rise to a virial equilibrium state which is far from spherically symmetric, and typically triaxial. We focus here on how the degree of symmetry breaking in the final state depends on the initial density profile. We note that the most asymmetric structures result when, during the collapse phase, there is a strong injection of energy preferentially into the particles which are localized initially in the outer shells. These particles are still collapsing when the others, initially located in the inner part, are already re-expanding; the motion of particles in a time varying potential allow them to gain kinetic energy --- in some cases enough to be ejected from the system. We show that this mechanism of energy gain amplifies the initial small deviations from perfect spherical symmetry due to finite $N$ fluctuations. This amplification is more efficient when the initial density profile depends on radius, because particles have a greater spr...

  16. Electrical generation plant design practice intern experience at Power Systems Engineering, Inc.: an internship report 

    E-Print Network [OSTI]

    Lee, Ting-Zern Joe, 1950-

    2013-03-13

    MULTIPLYING FACTORS FOR SYMMETRICAL CURRENT RATING BASIS DEVICES BY JL j. I n.i N/A 7306 Power System s Engineering, Inc. 2i.i Ick [lelt JcUf,c\\r 0-kDf FFu4s S e {w{)6 E{XS{?X0 I S63?6S i.O 1.1 MULTIPLYING FACTORS [ie ??????????? o... Power System s Engineering, Inc. 2i.i Ick [lelt JcUf,c\\r 0-kDf FFu4s 03I)6 3 ?X?{.?X0wr 76n?X0w 30 ?63 [6?6)0. [?ruuu ?0r 3n7 0J6S?3) {.n7?{0X?X0w .? 3XS 06?26S30?S6 ? ? ? ? I ? [ ? ?cc? 36?.X?06 ?X?{.?X0wr U 76n?X0wr ? ? ????? 0J6S?3...

  17. Alternatives generation and analysis for double-shell tank primary ventilation systems emissions control and monitoring

    SciTech Connect (OSTI)

    SEDERBURG, J.P.

    1999-09-30

    This AGA addresses the question: ''What equipment upgrades, operational changes, and/or other actions are required relative to the DST tanks farms' ventilation systems to support retrieval, staging (including feed sampling), and delivery of tank waste to the Phase I private contractor?'' Issues and options for the various components within the ventilation subsystem affect each other. Recommended design requirements are presented and the preferred alternatives are detailed.

  18. An Investigation of the Utilization of Smart Meter Data to Adapt Overcurrent Protection for Radial Distribution Systems with a High Penetration of Distributed Generation 

    E-Print Network [OSTI]

    Douglin, Richard Henry

    2012-07-16

    The future of electric power distribution systems (DSs) is one that incorporates extensive amounts of advanced metering, distribution automation, and distributed generation technologies. Most DSs were designed to be radial ...

  19. The Automated Bicron Tester: Automated electronic instrument diagnostic, testing, and alignment system with records generation

    SciTech Connect (OSTI)

    Rao, G.S.; Maddox, S.R.; Turner, G.W.; Vandermolen, R.I.

    1995-11-01

    The Bicron Surveyor MX is a portable radiation monitoring instrument used by the Office of Radiation Protection at Oak Ridge National Laboratory. This instrument must be calibrated in order to assure reliable operation. A manual calibration procedure was developed, but it was time consuming and repetitive. Therefore, an automated tester station that would allow the technicians to calibrate the instruments faster and more reliably was developed. With the automated tester station, calibration records and accountability could be generated and maintained automatically. This allows the technicians to concentrate on repairing defective units. The Automated Bicron Tester consists of an operator interface, an analog board, and a digital controller board. The panel is the user interface that allows the technician to communicate with the tester. The analog board has an analog-to-digital converter (ADC) that converts the signals from the instrument into digital data that the tester can manipulate. The digital controller board contains the circuitry to perform the test and to communicate the results to the host personal computer (PC). The tester station is connected to the unit under test through a special test harness that attaches to a header on the Bicron. The tester sends pulse trains to the Bicron and measures the resulting meter output. This is done to determine if the unit is functioning properly. The testers are connected to the host PC through an RS-485 serial line. The host PC polls all the tester stations that are connected to it and collects data from those that have completed a calibration. It logs these data and stores the record in a format ready for export to the Maintenance, Accountability, Jobs, and Inventory Control (MAJIC) database. It also prints a report. The programs for the Automated Bicron Tester and the host are written in the C language.

  20. Engineering Facilities Having the facilities to develop and test spacecraft on-site is a

    E-Print Network [OSTI]

    Mojzsis, Stephen J.

    concerning the level of allowable contamination for space-bound products. LASP's four on-site cleanrooms. Cleanroom standards are federally and internationally regulated and designated by class, which for Standardization (ISO) Class-5 cleanroom has at most 100,000 particles bigger than a half micron per cubic meter