Sample records for availability conversions emissions

  1. Toward Widely-Available and Usable Multimodal Conversational Interfaces

    E-Print Network [OSTI]

    Gruenstein, Alexander

    2009-01-01T23:59:59.000Z

    Multimodal conversational interfaces, which allow humans to interact with a computer using a combination of spoken natural language and a graphical interface, offer the potential to transform the manner by which humans ...

  2. 2008 Guidelines to Defra's GHG Conversion Methodology Paper for Transport Emission Factors

    E-Print Network [OSTI]

    2008 Guidelines to Defra's GHG Conversion Factors: Methodology Paper for Transport Emission Factors: Methodology Paper for Transport Emission Factors Contents I. INTRODUCTION 3 II. AVIATION 4 Previous Approach 4 New Passenger Air Transport Emission Factors 5 New Freight Air Transport Emission Factors 10 Other

  3. Modeling of EUV Emission and Conversion Efficiency from Laser-Produced Tin Plasmas for Nanolithography

    E-Print Network [OSTI]

    Harilal, S. S.

    Modeling of EUV Emission and Conversion Efficiency from Laser-Produced Tin Plasmas simulation tools. Here, we investigate the radiative properties of tin and tin-doped foam plasmas heated by 1 at intermediate focus (IF). Laser-generated plasmas containing lithium, xenon or tin are potentially good emission

  4. A guide to the emissions certification procedures for alternative fuel aftermarket conversions

    SciTech Connect (OSTI)

    NONE

    1998-01-01T23:59:59.000Z

    Emissions certification is still relatively new to the aftermarket vehicle conversion industry. Many in the industry think that as soon as a vehicle is converted to operate on compressed natural gas (CNG) or liquefied petroleum gas (LFG), it automatically runs as clean as or cleaner than it did on the conventional fuel. However, recent studies have shown that aftermarket conversions may not always reduce emissions. To achieve emissions benefits, the conversion equipment must be designed and calibrated specifically for the engine and emissions control system on which it has been installed, and the installation and setup must be performed so as to not adversely affect the vehicle`s original emissions performance. The reason for certification, then, is to ensure that these criteria are met, that the vehicle continues to perform properly, and that it continues to satisfy all appropriate emissions standards throughout its useful life. The authors have prepared this guide to help equipment manufacturers, distributors, and installers understand the emissions certification process for aftermarket conversions. The guide gives an overview of the certification requirements established by the US EPA and by the state of California.

  5. Fuel Economy and Emissions of a Vehicle Equipped with an Aftermarket Flexible-Fuel Conversion Kit

    SciTech Connect (OSTI)

    Thomas, John F [ORNL; Huff, Shean P [ORNL; West, Brian H [ORNL

    2012-04-01T23:59:59.000Z

    The U.S. Environmental Protection Agency (EPA) grants Certificates of Conformity for alternative fuel conversion systems and also offers other forms of premarket registration of conversion kits for use in vehicles more than two model years old. Use of alternative fuels such as ethanol, natural gas, and propane are encouraged by the Energy Policy Act of 1992. Several original equipment manufacturers (OEMs) produce emissions-certified vehicles capable of using alternative fuels, and several alternative fuel conversion system manufacturers produce EPA-approved conversion systems for a variety of alternative fuels and vehicle types. To date, only one manufacturer (Flex Fuel U.S.) has received EPA certifications for ethanol fuel (E85) conversion kits. This report details an independent evaluation of a vehicle with a legal installation of a Flex Fuel U.S. conversion kit. A 2006 Dodge Charger was baseline tested with ethanol-free certification gasoline (E0) and E20 (gasoline with 20 vol % ethanol), converted to flex-fuel operation via installation of a Flex Box Smart Kit from Flex Fuel U.S., and retested with E0, E20, E50, and E81. Test cycles included the Federal Test Procedure (FTP or city cycle), the highway fuel economy test (HFET), and the US06 test (aggressive driving test). Averaged test results show that the vehicle was emissions compliant on E0 in the OEM condition (before conversion) and compliant on all test fuels after conversion. Average nitrogen oxide (NOx) emissions exceeded the Tier 2/Bin 5 intermediate life NO{sub X} standard with E20 fuel in the OEM condition due to two of three test results exceeding this standard [note that E20 is not a legal fuel for non-flexible-fuel vehicles (non-FFVs)]. In addition, one E0 test result before conversion and one E20 test result after conversion exceeded the NOX standard, although the average result in these two cases was below the standard. Emissions of ethanol and acetaldehyde increased with increasing ethanol, while nonmethane organic gas and CO emissions remained relatively unchanged for all fuels and cycles. Higher fraction ethanol blends appeared to decrease NO{sub X} emissions on the FTP and HFET (after conversion). As expected, fuel economy (miles per gallon) decreased with increasing ethanol content in all cases.

  6. On the transition from photoluminescence to thermal emission and its implication on solar energy conversion

    E-Print Network [OSTI]

    Manor, Assaf; Rotschild, Carmel

    2014-01-01T23:59:59.000Z

    Photoluminescence (PL) is a fundamental light-matter interaction, which conventionally involves the absorption of energetic photon, thermalization and the emission of a red-shifted photon. Conversely, in optical-refrigeration the absorption of low energy photon is followed by endothermic-PL of energetic photon. Both aspects were mainly studied where thermal population is far weaker than photonic excitation, obscuring the generalization of PL and thermal emissions. Here we experimentally study endothermic-PL at high temperatures. In accordance with theory, we show how PL photon rate is conserved with temperature increase, while each photon is blue shifted. Further rise in temperature leads to an abrupt transition to thermal emission where the photon rate increases sharply. We also show how endothermic-PL generates orders of magnitude more energetic photons than thermal emission at similar temperatures. Relying on these observations, we propose and theoretically study thermally enhanced PL (TEPL) for highly eff...

  7. Understanding the catalytic conversion of automobile exhaust emissions using model catalysts: CO+NO reaction on Pd(111)

    E-Print Network [OSTI]

    Goodman, Wayne

    Understanding the catalytic conversion of automobile exhaust emissions using model catalysts: CO and the quantity of the exhaust gases originating from mobile sources such as automobile emissions by the automobile industry for emission control purposes due to its technical and economical advantages [2

  8. This is the published version available August 2005. Improving Emission Inventories for

    E-Print Network [OSTI]

    This is the published version available August 2005. Improving Emission Inventories for Effective INVENTORY PROGRAMS CHAPTER 3 CURRENT STATUS OF NORTH AMERICAN EMISSION INVENTORIES CHAPTER 4 TOOLS FOR DEVELOPING EMISSION INVENTORIES CHAPTER 5 STRENGTHS AND WEAKNESSES OF CURRENT EMISSION INVENTORIES CHAPTER 6

  9. Chemical Emissions of Residential Materials and Products: Review of Available Information Environmental Energy Technologies Division

    E-Print Network [OSTI]

    -up approach of collecting and evaluating emissions data from construction and interior materials and commonChemical Emissions of Residential Materials and Products: Review of Available Information Building Technologies Program, Office of Energy Efficiency and Renewable Energy under DOE Contract No. DE

  10. Electronic copy available at: http://ssrn.com/abstract=1558744 The optimal portfolio of emissions abatement and

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Electronic copy available at: http://ssrn.com/abstract=1558744 The optimal portfolio of emissions abatement and low-carbon R&D depends on the expected availability of negative emission technologies Derek M optimal portfolio of emissions abatement and low-carbon R&D depends on the expected availability

  11. An Assessment of Land Availability and Price in the Coterminous United States for Conversion to Algal Biofuel Production

    SciTech Connect (OSTI)

    Venteris, Erik R.; Skaggs, Richard; Coleman, Andre M.; Wigmosta, Mark S.

    2012-12-01T23:59:59.000Z

    Realistic economic assessment of land-intensive alternative energy sources (e.g., solar, wind, and biofuels) requires information on land availability and price. Accordingly, we created a comprehensive, national-scale model of these parameters for the United States. For algae-based biofuel, a minimum of 1.04E+05 km2 of land is needed to meet the 2022 EISA target of 2.1E+10 gallons year-1. We locate and quantify land types best converted. A data-driven model calculates the incentive to sell and a fair compensation value (real estate and lost future income). 1.02E+6 km2 of low slope, non-protected land is relatively available including croplands, pasture/ grazing, and forests. Within this total there is 2.64E+5 km2 of shrub and barren land available. The Federal government has 7.68E+4 km2 available for lease. Targeting unproductive lands minimizes land costs and impacts to existing industries. However, shrub and barren lands are limited by resources (water) and logistics, so land conversion requires careful consideration.

  12. Non-linear response of carbon dioxide and methane emissions to oxygen availability in a drained histosol

    E-Print Network [OSTI]

    McNicol, Gavin; Silver, Whendee L

    2015-01-01T23:59:59.000Z

    emissions to oxygen availability in a drained HistosolIncreased O 2 availability from wetland drainage and climateunder greater O 2 availability. We varied gas-phase O 2

  13. Chemical Emissions of Residential Materials and Products: Review of Available Information

    SciTech Connect (OSTI)

    Willem, Henry; Singer, Brett

    2010-09-15T23:59:59.000Z

    This report is prepared in the context of a larger program whose mission is to advance understanding of ventilation and indoor air quality in U.S. homes. A specific objective of this program is to develop the scientific basis ? through controlled experiments, monitoring and analysis ? for health risk-based ventilation standards. Appropriate and adequate ventilation is a basic element of a healthy home. Ventilation provides outdoor air and in the process removes indoor odors and contaminants including potentially unhealthful chemicals emitted by indoor materials, products and activities. Ventilation traditionally was assured to occur via infiltration of outdoor air through cracks and other leakage pathways in the residential building envelope. As building air tightness is improved for energy efficiency, infiltration can be reduced to inadequate levels. This has lead to the development of standards requiring mechanical ventilation. Though nominally intended to ensure acceptable indoor air quality, the standards are not explicitly tied to health risk or pollutant exposure targets. LBNL is currently designing analyses to assess the impact of varying ventilation standards on pollutant concentrations, health risks and energy use. These analyses require information on sources of chemical pollutant emissions, ideally including emission rates and the impact of ventilation on emissions. Some information can be obtained from recent studies that report measurements of various air contaminants and their concentrations in U.S. residences. Another way to obtain this information is the bottom-up approach of collecting and evaluating emissions data from construction and interior materials and common household products. This review contributes to the latter approach by summarizing available information on chemical emissions from new residential products and materials. We review information from the scientific literature and public sources to identify and discuss the databases that provide information on new or low-emission materials and products. The review focuses on the primary chemical or volatile organic compound (VOC) emissions from interior surface materials, furnishings, and some regularly used household products; all of these emissions are amenable to ventilation. Though it is an important and related topic, this review does not consider secondary pollutants that result from reactions of ozone and unsaturated organics bound to or emitted from material surfaces. Semi-volatile organic compounds (SVOCs) have been largely excluded from this review because ventilation generally is not an effective way to control SVOC exposures. Nevertheless, health concerns about exposures to SVOCs emitted from selected materials warrant some discussion.

  14. Challenges and Opportunities in Thermoelectric Energy Conversion...

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

    Energy Conversion Challenges and Opportunities in Thermoelectric Energy Conversion 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: Lawrence Berkeley...

  15. Luminescence thermometry below room temperature via up-conversion emission of Y{sub 2}O{sub 3}:Yb{sup 3+},Er{sup 3+} nanophosphors

    SciTech Connect (OSTI)

    Lojpur, V.; Nikoli?, G.; Drami?anin, M. D., E-mail: dramican@vinca.rs [Vin?a Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, Belgrade 11001 (Serbia)

    2014-05-28T23:59:59.000Z

    This study explores potential of Er{sup 3+}-Yb{sup 3+} doped phosphors for up-conversion luminescence thermometry in the temperature range from 10?K to 300?K. Yttrium oxide nanopowder doped with trivalent ytterbium and erbium ions (Y{sub 1.97}Yb{sub 0.02}Er{sub 0.01}O{sub 3}) was prepared by hydrothermal synthesis as an example. The intensity ratios of up-conversion emissions from thermally coupled {sup 2}H{sub 11/2} and {sup 4}S{sub 3/2} levels of Er{sup 3+} show strong temperature dependence (in the range 150?K–300?K) with much higher relative sensitivity than those reported for thermometry above room temperature with Er{sup 3+}-Yb{sup 3+} based up-conversion materials. The maximal value of relative sensitivity is 5.28%K{sup ?1} at 150?K, with temperature resolution ranging from 0.81?K to 0.06?K. In addition, the intensity ratios of emission from thermally non-coupled Er{sup 3+} levels ({sup 2}H{sub 9/2} and {sup 4}F{sub 9/2}) and from {sup 4}S{sub 3/2} also show temperature dependence that can be approximated with an exponential function. With these up-conversion emission ratios, it is possible measure temperature in the range of 10?K to 300?K with excellent sensitivity and resolution.

  16. Chemical Emissions of Residential Materials and Products: Review of Available Information

    E-Print Network [OSTI]

    Willem, Henry

    2010-01-01T23:59:59.000Z

    Emission of phthalates from PVC and other materials. Indoorof esters contained in PVC flooring and adhesive. Buildingemissions from individual PVC materials, adhesives and from

  17. Chemical Emissions of Residential Materials and Products: Review of Available Information Preliminary Analysis of U.S. Residential

    E-Print Network [OSTI]

    Chemical Emissions of Residential Materials and Products: Review of Available Information Preliminary Analysis of U.S. Residential Air Leakage Database v.2011 thereof or the Regents of the University of California. #12;PRELIMINARY ANALYSIS OF U.S. RESIDENTIAL AIR

  18. Application of Planck's law to thermionic conversion

    SciTech Connect (OSTI)

    Caldwell, F.

    1998-07-01T23:59:59.000Z

    A simple, highly accurate, mathematical model of heat-to-electricity conversion is developed from Planck's law for the distribution of the radiant exitance of heat at a selected temperature. An electrical power curve is calculated by integration of the heat law over a selected range of electromagnetic wavelength corresponding to electrical voltage. A novel wavelength-voltage conversion factor, developed from the known wavelength-electron volt conversion factor, establishes the wavelength ({lambda}) for the integration. The Planck law is integrated within the limits {lambda} to 2{lambda}. The integration provides the ideal electrical power that is available from heat at the emitter temperature. When multiplied by a simple ratio, the calculated ideal power closely matches published thermionic converter experimental data. The thermal power model of thermionic conversion is validated by experiments with thermionic emission of ordinary electron tubes. A theoretical basis for the heat law based model of thermionic conversion is found in linear oscillator theory.

  19. Navy Mobility Fuels Forecasting System Phase 5 report: Jet fuel conversion by Pacific fuel suppliers and impacts on Navy fuel availability

    SciTech Connect (OSTI)

    Hadder, G.R.; Das, S.; Lee, R.; Domingo, N.; Davis, R.M.

    1989-09-01T23:59:59.000Z

    NATO members have made the commitment to convert land-based jet aircraft from naphtha-type JP-4 jet fuel to kerosene-type JP-8. JP-8 has safety advantages because of its relatively low volatility. With the NATO conversion underway, the US military has conducted market surveys to determine the effects of jet fuel conversion in the Pacific basin. This report describes the application of the economic and engineering models of the Navy Mobility Fuels Forecasting System to predict the effects of jet fuel conversion in the Pacific basin. The primary objective of the study was to estimate the impacts of conversion on the cost and quality of Navy jet and marine fuels. The study predicts that the average cost increase for producing JP-8 instead of JP-4 is 5 cents per gallon. The associated cost increases for Navy fuels are 0.4 cents per gallon for JP-5 jet fuel; 0.2 cents per gallon for F-76 marine diesel fuel; and 0.4 cents per gallon for F-77 burner fuel oil. Conversion has little effect on the quality of Navy fuels. With or without conversion, the study predicts that Navy fuels produced in the US West Coast could have increased tendencies to form gums and other particulates, with potentially adverse impacts on storage stability. 22 refs., 2 figs., 11 tabs.

  20. Nitrogen availability and indirect measurements of greenhouse gas emissions from aerobic and anaerobic biowaste digestates applied to agricultural soils

    SciTech Connect (OSTI)

    Rigby, H.; Smith, S.R., E-mail: s.r.smith@imperial.ac.uk

    2013-12-15T23:59:59.000Z

    Highlights: • Nitrogen release in digestate-amended soil depends on the digestate type. • Overall N release is modulated by digestate mineral and mineralisable N contents. • Microbial immobilisation does not influence overall release of digestate N in soil. • Digestate physical properties and soil type interact to affect overall N recovery. • High labile C inputs in digestate may promote denitrification in fine-textured soil. - Abstract: Recycling biowaste digestates on agricultural land diverts biodegradable waste from landfill disposal and represents a sustainable source of nutrients and organic matter (OM) to improve soil for crop production. However, the dynamics of nitrogen (N) release from these organic N sources must be determined to optimise their fertiliser value and management. This laboratory incubation experiment examined the effects of digestate type (aerobic and anaerobic), waste type (industrial, agricultural and municipal solid waste or sewage sludge) and soil type (sandy loam, sandy silt loam and silty clay) on N availability in digestate-amended soils and also quantified the extent and significance of the immobilisation of N within the soil microbial biomass, as a possible regulatory mechanism of N release. The digestate types examined included: dewatered, anaerobically digested biosolids (DMAD); dewatered, anaerobic mesophilic digestate from the organic fraction of municipal solid waste (DMADMSW); liquid, anaerobic co-digestate of food and animal slurry (LcoMAD) and liquid, thermophilic aerobic digestate of food waste (LTAD). Ammonium chloride (NH{sub 4}Cl) was included as a reference treatment for mineral N. After 48 days, the final, maximum net recoveries of mineral N relative to the total N (TN) addition in the different digestates and unamended control treatments were in the decreasing order: LcoMAD, 68%; LTAD, 37%, DMAD, 20%; and DMADMSW, 11%. A transient increase in microbial biomass N (MBN) was observed with LTAD application, indicating greater microbial activity in amended soil and reflecting the lower stability of this OM source, compared to the other, anaerobic digestate types, which showed no consistent effects on MBN compared to the control. Thus, the overall net release of digestate N in different soil types was not regulated by N transfer into the soil microbial biomass, but was determined primarily by digestate properties and the capacity of the soil type to process and turnover digestate N. In contrast to the sandy soil types, where nitrate (NO{sub 3}{sup -}) concentrations increased during incubation, there was an absence of NO{sub 3}{sup -} accumulation in the silty clay soil amended with LTAD and DMADMSW. This provided indirect evidence for denitrification activity and the gaseous loss of N, and the associated increased risk of greenhouse gas emissions under certain conditions of labile C supply and/or digestate physical structure in fine-textured soil types. The significance and influence of the interaction between soil type and digestate stability and physical properties on denitrification processes in digestate-amended soils require urgent investigation to ensure management practices are appropriate to minimise greenhouse gas emissions from land applied biowastes.

  1. A case study of agricultural residue availability and cost for a cellulosic ethanol conversion facility in the Henan province of China

    SciTech Connect (OSTI)

    Webb, Erin [ORNL; Wu, Yun [ORNL

    2012-05-01T23:59:59.000Z

    A preliminary analysis of the availability and cost of corn stover and wheat straw for the area surrounding a demonstration biorefinery in the Henan Province of China was performed as a case study of potential cooperative analyses of bioenergy feedstocks between researchers and industry in the US and China. Though limited in scope, the purpose of this analysis is to provide insight into some of the issues and challenges of estimating feedstock availability in China and how this relates to analyses of feedstocks in the U.S. Completing this analysis also highlighted the importance of improving communication between U.S. researchers and Chinese collaborators. Understanding the units and terms used in the data provided by Tianguan proved to be a significant challenge. This was further complicated by language barriers between collaborators in the U.S. and China. The Tianguan demonstration biorefinery has a current capacity of 3k tons (1 million gallons) of cellulosic ethanol per year with plans to scale up to 10k tons (3.34 million gallons) per year. Using data provided by Tianguan staff in summer of 2011, the costs and availability of corn stover and wheat straw were estimated. Currently, there are sufficient volumes of wheat straw and corn stover that are considered 'waste' and would likely be available for bioenergy in the 20-km (12-mile) region surrounding the demonstration biorefinery at a low cost. However, as the industry grows, competition for feedstock will grow and prices are likely to rise as producers demand additional compensation to fully recover costs.

  2. Contribution of vehicle emissions to ambient carbonaceous particulate matter: A review and synthesis of the available data in the South Coast Air Basin. Final report

    SciTech Connect (OSTI)

    Cass, G.R.

    1997-02-01T23:59:59.000Z

    Table of Contents: Executive Summary; Introduction; Ambient Carbonaceous Particulate Matter in the South Coast Air Basin; Measurements of Emissions from In-Use Motor Vehicles in the South Coast Air Basin; Integration of Emissions Measurements into Comprehensive Emissions Inventories; Relating Emissions fom Motor Vehicles to Particulate Air Quality; Synthesis: The Combined Effect of All Vehicle-Related Source Contributions Acting Together; Trends in More Recent Years; Opportunities for Further Research; References; Appendix A: Detailed Mass Emissions Rates for Organic Compounds from Motor Vehicle Exhaust; and Appendix B: Organic Compounds Emitted from Tire Dust, Paved Road Dust, and Brake Lining Wear Dust.

  3. Biomass thermochemical conversion program. 1985 annual report

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1986-01-01T23:59:59.000Z

    Wood and crop residues constitute a vast majority of the biomass feedstocks available for conversion, and thermochemical processes are well suited for conversion of these materials. The US Department of Energy (DOE) is sponsoring research on this conversion technology for renewable energy through its Biomass Thermochemical Conversion Program. The Program is part of DOE's Biofuels and Municipal Waste Technology Division, Office of Renewable Technologies. This report briefly describes the Thermochemical Conversion Program structure and summarizes the activities and major accomplishments during fiscal year 1985. 32 figs., 4 tabs.

  4. India's challenge of improving the living standards of its growing population through a low-emission development calls for early adaptation of carbon capture and storage (CCS) though the available

    E-Print Network [OSTI]

    -emission development calls for early adaptation of carbon capture and storage (CCS) though the available storage, sequestration or overseas shipment of CO .2 Rudra Kapila and Jon Gibbins getting India ready for carbon capture to become clearer, and the only way to contain it is, if fossil fuels are used, to employ carbon capture

  5. Introduction: Integrative Approaches for Estimating Current and Future Feedstock Availability

    SciTech Connect (OSTI)

    West, Tristram O.

    2010-09-08T23:59:59.000Z

    Biomass that is used to generate energy, through conversion processes or direct combustion, is referred to as a bioenergy feedstock. Establishment of bioenergy feedstocks as an agricultural commodity has the potential to alter land management, carbon stocks, water quality, and greenhouse gas emissions over large geographic areas. Estimation of current and future feedstock availability is an essential step in assessing potential environmental and economic impacts of feedstock production. The purpose of this special issue is to communicate integrative approaches that combine data and modeling capabilities for estimation of current and future feedstock availability.

  6. Solar Thermoelectric Energy Conversion

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

    SOLID-STATE SOLAR-THERMAL ENERGY CONVERSION CENTER NanoEngineering Group Solar Thermoelectric Energy Conversion Gang Chen, 1 Daniel Kraemer, 1 Bed Poudel, 2 Hsien-Ping Feng, 1 J....

  7. Sandia Energy - Wavelength Conversion Materials

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

    to a wider range of wavelengths in this region. Phosphors based on divalent europium (Eu+2) are available in the green and even into the blue emission region. Photon...

  8. QUANTUM CONVERSION IN PHOTOSYNTHESIS

    E-Print Network [OSTI]

    Calvin, Melvin

    2008-01-01T23:59:59.000Z

    QUANTUM CONVERSION IN PHOTOSYNTHESIS Melvin Calvin Januaryas it occurs in modern photosynthesis can only take place inof the problem or photosynthesis, or any specific aspect of

  9. Photon enhanced thermionic emission

    DOE Patents [OSTI]

    Schwede, Jared; Melosh, Nicholas; Shen, Zhixun

    2014-10-07T23:59:59.000Z

    Photon Enhanced Thermionic Emission (PETE) is exploited to provide improved efficiency for radiant energy conversion. A hot (greater than 200.degree. C.) semiconductor cathode is illuminated such that it emits electrons. Because the cathode is hot, significantly more electrons are emitted than would be emitted from a room temperature (or colder) cathode under the same illumination conditions. As a result of this increased electron emission, the energy conversion efficiency can be significantly increased relative to a conventional photovoltaic device. In PETE, the cathode electrons can be (and typically are) thermalized with respect to the cathode. As a result, PETE does not rely on emission of non-thermalized electrons, and is significantly easier to implement than hot-carrier emission approaches.

  10. 2010 Guidelines to Defra / DECC's GHG Conversion Factors for Company Reporting

    E-Print Network [OSTI]

    update 44 Passenger Air Transport Direct CO2 Emission Factors (Annex 6) 44 Freight Air Transport Direct CO2 Emission Factors (Annex 7) 49 Air Transport Direct Emission Factors for CH4 and N2O 52 Air. ELECTRICITY CONVERSION FACTORS (ANNEX 3) 10 Summary of changes since previous update 10 Direct Emissions from

  11. Updated perspective on the potential for thermionic conversion to meet 21. century energy needs

    SciTech Connect (OSTI)

    Fitzpatrick, G.O.; Britt, E.J.; Moyzhes, B. [Space Power, Inc., San Jose, CA (United States)

    1997-12-31T23:59:59.000Z

    Thermionic conversion is unique among power conversion approaches in its ability to generate power efficiently with high temperature heat rejection. This feature has made thermionics an attractive choice for space power systems; and it has substantial potential for terrestrial advanced energy conversion, if certain recently identified technological developments are realized in a low cost manner. Thermionic energy converters are well suited to a modular approach. Thermionics is a passive system without moving parts. Thermionic energy conversion is able to use heat at the highest temperatures available, and to reject waste heat at temperatures high enough to be efficiently used by other energy conversion systems. For example, a thermionic converter can utilize heat at a high temperature from a flame or other heat source, convert some of it to electricity, and deliver its waste heat at a temperature high enough to run a steam generator. The combination of the thermionic converter and steam generator could produce as much as 40% more electricity from the fuel than the steam generator alone. Other terrestrial applications include cogeneration and a possible power source for a hybrid, low-emission electric vehicle. These terrestrial applications require advances in efficiency and power density in order to operate with lower emitter temperatures than space power thermionic systems. Recently it has been shown that close spaced thermionic converters can achieve the performance goals necessary to meet these attractive new applications. The paper addresses the progress in this regard and describes approaches for engineering practical closed spaced converters for large scale applications. Clearly the potential for thermionic energy conversion is great. Every effort must now be made to use this technology to help solve the world`s energy problems. Investments in the manufacturing infrastructure necessary to make thermionic energy conversion cost effective are needed to reach this goal.

  12. ADEPT: Efficient Power Conversion

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    ADEPT Project: In today’s increasingly electrified world, power conversion—the process of converting electricity between different currents, voltage levels, and frequencies—forms a vital link between the electronic devices we use every day and the sources of power required to run them. The 14 projects that make up ARPA-E’s ADEPT Project, short for “Agile Delivery of Electrical Power Technology,” are paving the way for more energy efficient power conversion and advancing the basic building blocks of power conversion: circuits, transistors, inductors, transformers, and capacitors.

  13. Solar Thermal Conversion

    SciTech Connect (OSTI)

    Kreith, F.; Meyer, R. T.

    1982-11-01T23:59:59.000Z

    The thermal conversion process of solar energy is based on well-known phenomena of heat transfer (Kreith 1976). In all thermal conversion processes, solar radiation is absorbed at the surface of a receiver, which contains or is in contact with flow passages through which a working fluid passes. As the receiver heats up, heat is transferred to the working fluid which may be air, water, oil, or a molten salt. The upper temperature that can be achieved in solar thermal conversion depends on the insolation, the degree to which the sunlight is concentrated, and the measures taken to reduce heat losses from the working fluid.

  14. Object Closure Conversion * Neal Glew

    E-Print Network [OSTI]

    Glew, Neal

    of closure conversion. This paper argues that a direct formulation of object closure conversio* *n Object Closure Conversion * Neal into closed code and auxiliary data* * structures. Closure conversion has been extensively studied

  15. Sandia National Laboratories: Thermochemical Conversion

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

    Biofuels Biofuels Publications Biochemical Conversion Program Lignocellulosic Biomass Microalgae Thermochemical Conversion Sign up for our E-Newsletter Required.gif?3.21 Email...

  16. acid forming emissions: Topics by E-print Network

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

    O V 2007-01-01 58 Project Information Form Project Title Urban Spatial Structure and GHG Emissions Energy Storage, Conversion and Utilization Websites Summary: has a larger...

  17. Structured luminescence conversion layer

    DOE Patents [OSTI]

    Berben, Dirk; Antoniadis, Homer; Jermann, Frank; Krummacher, Benjamin Claus; Von Malm, Norwin; Zachau, Martin

    2012-12-11T23:59:59.000Z

    An apparatus device such as a light source is disclosed which has an OLED device and a structured luminescence conversion layer deposited on the substrate or transparent electrode of said OLED device and on the exterior of said OLED device. The structured luminescence conversion layer contains regions such as color-changing and non-color-changing regions with particular shapes arranged in a particular pattern.

  18. Partnerships to continue moving toward zero emissions

    E-Print Network [OSTI]

    California at Davis, University of

    Partnerships to continue moving toward zero emissions Zero Emission transportation goals Zero Emission MAP makes available technical assistance to states and cities to support the growth of zero emission mobility markets. 1 Research shows

  19. Digital optical conversion module

    DOE Patents [OSTI]

    Kotter, D.K.; Rankin, R.A.

    1988-07-19T23:59:59.000Z

    A digital optical conversion module used to convert an analog signal to a computer compatible digital signal including a voltage-to-frequency converter, frequency offset response circuitry, and an electrical-to-optical converter. Also used in conjunction with the digital optical conversion module is an optical link and an interface at the computer for converting the optical signal back to an electrical signal. Suitable for use in hostile environments having high levels of electromagnetic interference, the conversion module retains high resolution of the analog signal while eliminating the potential for errors due to noise and interference. The module can be used to link analog output scientific equipment such as an electrometer used with a mass spectrometer to a computer. 2 figs.

  20. Photovoltaic Energy Conversion

    E-Print Network [OSTI]

    Glashausser, Charles

    than electricity from coal if cost of carbon capture is factored in Great promise for solving globalPhotovoltaic Energy Conversion Frank Zimmermann #12;Solar Electricity Generation Consumes no fuel No pollution No greenhouse gases No moving parts, little or no maintenance Sunlight is plentiful

  1. ENERGY CONVERSION Spring 2011

    E-Print Network [OSTI]

    Bahrami, Majid

    : Gas turbine power plants and air craft propulsion Week 5: Liquidvapor mixtures, vapor power systems: Selected problems will be solved and questions about lecture material or assignments of the course material. However, you are permitted to use a photocopy of unit conversion tables from

  2. Computer simulations for direct conversion of the HF electromagnetic wave into the upper hybrid wave in ionospheric heating experiments

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Computer simulations for direct conversion of the HF electromagnetic wave into the upper hybrid emissions (SEE). A direct conversion process is proposed as an excitation mech- anism of the upper hybrid, 1996) The electrostatic waves at the UH resonance were assumed to be excited via ``direct conversion

  3. Wind Energy Conversion Systems (Minnesota)

    Broader source: Energy.gov [DOE]

    This section distinguishes between large (capacity 5,000 kW or more) and small (capacity of less than 5,000 kW) wind energy conversion systems (WECS), and regulates the siting of large conversion...

  4. Power Conversion APEX Interim Report November, 1999

    E-Print Network [OSTI]

    California at Los Angeles, University of

    Efficiency for different steam cycles. 17.2 Close cycle gas turbine: The closed cycle gas turbine has. POWER CONVERSION 17.1 Steam Cycle Different steam cycles have been well developed. A study by EPRI summarized the various advanced steam cycles which maybe available for an advanced coal power plant

  5. Wind energy conversion system

    DOE Patents [OSTI]

    Longrigg, Paul (Golden, CO)

    1987-01-01T23:59:59.000Z

    The wind energy conversion system includes a wind machine having a propeller connected to a generator of electric power, the propeller rotating the generator in response to force of an incident wind. The generator converts the power of the wind to electric power for use by an electric load. Circuitry for varying the duty factor of the generator output power is connected between the generator and the load to thereby alter a loading of the generator and the propeller by the electric load. Wind speed is sensed electro-optically to provide data of wind speed upwind of the propeller, to thereby permit tip speed ratio circuitry to operate the power control circuitry and thereby optimize the tip speed ratio by varying the loading of the propeller. Accordingly, the efficiency of the wind energy conversion system is maximized.

  6. Hydrocarbon conversion process

    SciTech Connect (OSTI)

    Buss, W.C.; Field, L.A.; Robinson, R.C.

    1984-06-26T23:59:59.000Z

    A hydrocarbon conversion process is disclosed having a very high selectivity for dehydrocyclization. In one aspect of this process, a hydrocarbon feed is subjected to hydrotreating, then the hydrocarbon feed is passed through a sulfur removal system which reduces the sulfur concentration of the hydrocarbon feed to below 500 ppb, and then the hydrocarbon feed is reformed over a dehydrocyclization catalyst comprising a large pore zeolite containing at least one Group VIII metal to produce aromatics and hydrogen.

  7. Object Closure Conversion Cornell University

    E-Print Network [OSTI]

    Glew, Neal

    that a direct formulation of object closure conversion is interesting and gives further insight into generalObject Closure Conversion Neal Glew Cornell University 24 August 1999 Abstract An integral part of implementing functional languages is closure conversion--the process of converting code with free variables

  8. Sandia National Laboratories: Wavelength Conversion Materials

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

    TechnologiesWavelength Conversion Materials Wavelength Conversion Materials Overview of SSL Wavelength Conversion Materials Rare-Earth Phosphors Inorganic phosphors doped with...

  9. OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Sands, M.Dale

    2013-01-01T23:59:59.000Z

    M.D. (editor) Ocean Thermal Energy Conversion (OTEC) Draftin Ocean Thermal Energy Conversion (OTEC) technology haveThe Ocean Thermal Energy Conversion (OTEC) 2rogrammatic

  10. Sustainable systems for the storage and conversion of energy are dependent on interconnected

    E-Print Network [OSTI]

    Reisslein, Martin

    SEMTE abstract Sustainable systems for the storage and conversion of energy are dependent energy systems for harvesting low availability thermal energy and for providing integrated power, cooling performance buildings, renewable energy conversion, and energy storage can be streamlined by identifying

  11. Conversion of Questionnaire Data

    SciTech Connect (OSTI)

    Powell, Danny H [ORNL] [ORNL; Elwood Jr, Robert H [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    During the survey, respondents are asked to provide qualitative answers (well, adequate, needs improvement) on how well material control and accountability (MC&A) functions are being performed. These responses can be used to develop failure probabilities for basic events performed during routine operation of the MC&A systems. The failure frequencies for individual events may be used to estimate total system effectiveness using a fault tree in a probabilistic risk analysis (PRA). Numeric risk values are required for the PRA fault tree calculations that are performed to evaluate system effectiveness. So, the performance ratings in the questionnaire must be converted to relative risk values for all of the basic MC&A tasks performed in the facility. If a specific material protection, control, and accountability (MPC&A) task is being performed at the 'perfect' level, the task is considered to have a near zero risk of failure. If the task is performed at a less than perfect level, the deficiency in performance represents some risk of failure for the event. As the degree of deficiency in performance increases, the risk of failure increases. If a task that should be performed is not being performed, that task is in a state of failure. The failure probabilities of all basic events contribute to the total system risk. Conversion of questionnaire MPC&A system performance data to numeric values is a separate function from the process of completing the questionnaire. When specific questions in the questionnaire are answered, the focus is on correctly assessing and reporting, in an adjectival manner, the actual performance of the related MC&A function. Prior to conversion, consideration should not be given to the numeric value that will be assigned during the conversion process. In the conversion process, adjectival responses to questions on system performance are quantified based on a log normal scale typically used in human error analysis (see A.D. Swain and H.E. Guttmann, 'Handbook of Human Reliability Analysis with Emphasis on Nuclear Power Plant Applications,' NUREG/CR-1278). This conversion produces the basic event risk of failure values required for the fault tree calculations. The fault tree is a deductive logic structure that corresponds to the operational nuclear MC&A system at a nuclear facility. The conventional Delphi process is a time-honored approach commonly used in the risk assessment field to extract numerical values for the failure rates of actions or activities when statistically significant data is absent.

  12. EIS-0360: EPA Notice of Availability of the Final Environmental...

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

    Availability of the Final Environmental Impact Statement Construction and Operation of a Depleted Uranium Hexafluoride Conversion Facility at the Portsmouth, Ohio, Site The U.S....

  13. Synthesis and characterisation of luminescent lanthanide dyes for solar energy conversion 

    E-Print Network [OSTI]

    Congiu, Martina

    2013-06-29T23:59:59.000Z

    Lanthanide (III) complexes are used extensively in solar conversion devices, such as Luminescent Solar Concentrators (LSCs) and Luminescent Down-Shifting (LDS) for their peculiar characteristics of narrow band emission, ...

  14. Implications of Fast Reactor Transuranic Conversion Ratio

    SciTech Connect (OSTI)

    Steven J. Piet; Edward A. Hoffman; Samuel E. Bays

    2010-11-01T23:59:59.000Z

    Theoretically, the transuranic conversion ratio (CR), i.e. the transuranic production divided by transuranic destruction, in a fast reactor can range from near zero to about 1.9, which is the average neutron yield from Pu239 minus 1. In practice, the possible range will be somewhat less. We have studied the implications of transuranic conversion ratio of 0.0 to 1.7 using the fresh and discharge fuel compositions calculated elsewhere. The corresponding fissile breeding ratio ranges from 0.2 to 1.6. The cases below CR=1 (“burners”) do not have blankets; the cases above CR=1 (“breeders”) have breeding blankets. The burnup was allowed to float while holding the maximum fluence to the cladding constant. We graph the fuel burnup and composition change. As a function of transuranic conversion ratio, we calculate and graph the heat, gamma, and neutron emission of fresh fuel; whether the material is “attractive” for direct weapon use using published criteria; the uranium utilization and rate of consumption of natural uranium; and the long-term radiotoxicity after fuel discharge. For context, other cases and analyses are included, primarily once-through light water reactor (LWR) uranium oxide fuel at 51 MWth-day/kg-iHM burnup (UOX-51). For CR<1, the heat, gamma, and neutron emission increase as material is recycled. The uranium utilization is at or below 1%, just as it is in thermal reactors as both types of reactors require continuing fissile support. For CR>1, heat, gamma, and neutron emission decrease with recycling. The uranium utilization exceeds 1%, especially as all the transuranic elements are recycled. exceeds 1%, especially as all the transuranic elements are recycled. At the system equilibrium, heat and gamma vary by somewhat over an order of magnitude as a function of CR. Isotopes that dominate heat and gamma emission are scattered throughout the actinide chain, so the modest impact of CR is unsurprising. Neutron emitters are preferentially found among the higher actinides, so the neutron emission varies much stronger with CR, about three orders of magnitude.

  15. Zinc phosphate conversion coatings

    DOE Patents [OSTI]

    Sugama, Toshifumi (Wading River, NY)

    1997-01-01T23:59:59.000Z

    Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate .alpha.-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal.

  16. Zinc phosphate conversion coatings

    DOE Patents [OSTI]

    Sugama, T.

    1997-02-18T23:59:59.000Z

    Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate {alpha}-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal. 33 figs.

  17. Energy conversion system

    DOE Patents [OSTI]

    Murphy, L.M.

    1985-09-16T23:59:59.000Z

    The energy conversion system includes a photo-voltaic array for receiving solar radiation and converting such radiation to electrical energy. The photo-voltaic array is mounted on a stretched membrane that is held by a frame. Tracking means for orienting the photo-voltaic array in predetermined positions that provide optimal exposure to solar radiation cooperate with the frame. An enclosure formed of a radiation transmissible material includes an inside containment space that accommodates the photo-voltaic array on the stretched membrane, the frame and the tracking means, and forms a protective shield for all such components. The enclosure is preferably formed of a flexible inflatable material and maintains its preferred form, such as a dome, under the influence of a low air pressure furnished to the dome. Under this arrangement the energy conversion system is streamlined for minimizing wind resistance, sufficiently weathproof for providing protection against weather hazards such as hail, capable of using diffused light, lightweight for low-cost construction and operational with a minimal power draw.

  18. Energy conversion system

    DOE Patents [OSTI]

    Murphy, Lawrence M. (Lakewood, CO)

    1987-01-01T23:59:59.000Z

    The energy conversion system includes a photo-voltaic array for receiving solar radiation and converting such radiation to electrical energy. The photo-voltaic array is mounted on a stretched membrane that is held by a frame. Tracking means for orienting the photo-voltaic array in predetermined positions that provide optimal exposure to solar radiation cooperate with the frame. An enclosure formed of a radiation transmissible material includes an inside containment space that accommodates the photo-voltaic array on the stretched membrane, the frame and the tracking means, and forms a protective shield for all such components. The enclosure is preferably formed of a flexible inflatable material and maintains its preferred form, such as a dome, under the influence of a low air pressure furnished to the dome. Under this arrangement the energy conversion system is streamlined for minimizing wind resistance, sufficiently weatherproof for providing protection against weather hazards such as hail, capable of using diffused light, lightweight for low-cost construction, and operational with a minimal power draw.

  19. Microturbine Power Conversion Technology Review

    SciTech Connect (OSTI)

    Staunton, R.H.

    2003-07-21T23:59:59.000Z

    In this study, the Oak Ridge National Laboratory (ORNL) is performing a technology review to assess the market for commercially available power electronic converters that can be used to connect microturbines to either the electric grid or local loads. The intent of the review is to facilitate an assessment of the present status of marketed power conversion technology to determine how versatile the designs are for potentially providing different services to the grid based on changes in market direction, new industry standards, and the critical needs of the local service provider. The project includes data gathering efforts and documentation of the state-of-the-art design approaches that are being used by microturbine manufacturers in their power conversion electronics development and refinement. This project task entails a review of power converters used in microturbines sized between 20 kW and 1 MW. The power converters permit microturbine generators, with their non-synchronous, high frequency output, to interface with the grid or local loads. The power converters produce 50- to 60-Hz power that can be used for local loads or, using interface electronics, synchronized for connection to the local feeder and/or microgrid. The power electronics enable operation in a stand-alone mode as a voltage source or in grid-connect mode as a current source. Some microturbines are designed to automatically switch between the two modes. The information obtained in this data gathering effort will provide a basis for determining how close the microturbine industry is to providing services such as voltage regulation, combined control of both voltage and current, fast/seamless mode transfers, enhanced reliability, reduced cost converters, reactive power supply, power quality, and other ancillary services. Some power quality improvements will require the addition of storage devices; therefore, the task should also determine what must be done to enable the power conversion circuits to accept a varying dc voltage source. The study will also look at technical issues pertaining to the interconnection and coordinated/compatible operation of multiple microturbines. It is important to know today if modifications to provide improved operation and additional services will entail complete redesign, selected component changes, software modifications, or the addition of power storage devices. This project is designed to provide a strong technical foundation for determining present technical needs and identifying recommendations for future work.

  20. E-Print Network 3.0 - advanced emission controls Sample Search...

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

    Center Collection: Engineering ; Energy Storage, Conversion and Utilization 20 7Emissions Trading Workshop Summary Report Discussion Synthesis Summary: traditional command and...

  1. E-Print Network 3.0 - advanced emissions control Sample Search...

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

    Center Collection: Engineering ; Energy Storage, Conversion and Utilization 20 7Emissions Trading Workshop Summary Report Discussion Synthesis Summary: traditional command and...

  2. Sandia National Laboratories: biomass conversion

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

    biomass conversion Sandia Video Featured by DOE Bioenergy Technologies Office On December 10, 2014, in Biofuels, Biomass, Capabilities, Energy, Facilities, JBEI, News, News &...

  3. Power conversion technologies

    SciTech Connect (OSTI)

    Newton, M. A.

    1997-02-01T23:59:59.000Z

    The Power Conversion Technologies thrust area identifies and sponsors development activities that enhance the capabilities of engineering at Lawrence Livermore National Laboratory (LLNL) in the area of solid- state power electronics. Our primary objective is to be a resource to existing and emerging LLNL programs that require advanced solid-state power electronic technologies.. Our focus is on developing and integrating technologies that will significantly impact the capability, size, cost, and reliability of future power electronic systems. During FY-96, we concentrated our research efforts on the areas of (1) Micropower Impulse Radar (MIR); (2) novel solid-state opening switches; (3) advanced modulator technology for accelerators; (4) compact accelerators; and (5) compact pulse generators.

  4. BIOMASS ENERGY CONVERSION IN HAWAII

    E-Print Network [OSTI]

    Ritschard, Ronald L.

    2013-01-01T23:59:59.000Z

    being considered: waterwall incineration and refuse-derivedpollutant from direct incineration systems. Emission rates

  5. Carbon dioxide emission index as a mean for assessing fuel quality

    SciTech Connect (OSTI)

    Furimsky, E. [IMAF Group, Ottawa, ON (Canada)

    2008-07-01T23:59:59.000Z

    Carbon dioxide emission index, defined as the amount of CO{sub 2} released per unit of energy value, was used to rate gaseous, liquid and solid fuels. The direct utilization of natural gas is the most efficient option. The conversion of natural gas to synthesis gas for production of liquid fuels represents a significant decrease in fuel value of the former. The fuel value of liquids, such as gasoline, diesel oil, etc. is lower than that of natural gas. Blending gasoline with ethanol obtained either from bio-mass or via synthesis may decrease fuel value of the blend when CO{sub 2} emissions produced during the production of ethanol are included in total emissions. The introduction of liquid fuels produced by pyrolysis and liquefaction of biomass would result in the increase in the CO{sub 2} emissions. The CO{sub 2} emissions from the utilization of coal and petroleum coke are much higher than those from gaseous and liquid fuels. However, for petroleum coke, this is offset by the high value gaseous and liquid fuels that are simultaneously produced during coking. Conversion of low value fuels such as coal and petroleum coke to a high value chemicals via synthesis gas should be assessed as means for replacing natural gas and making it available for fuel applications.

  6. Recent Advances in Catalytic Conversion of Ethanol to Chemicals

    SciTech Connect (OSTI)

    Sun, Junming; Wang, Yong

    2014-04-30T23:59:59.000Z

    With increased availability and decreased cost, ethanol is potentially a promising platform molecule for the production of a variety of value-added chemicals. In this review, we provide a detailed summary of recent advances in catalytic conversion of ethanol to a wide range of chemicals and fuels. We particularly focus on catalyst advances and fundamental understanding of reaction mechanisms involved in ethanol steam reforming (ESR) to produce hydrogen, ethanol conversion to hydrocarbons ranging from light olefins to longer chain alkenes/alkanes and aromatics, and ethanol conversion to other oxygenates including 1-butanol, acetaldehyde, acetone, diethyl ether, and ethyl acetate.

  7. HOOTS99 Preliminary Version Object Closure Conversion

    E-Print Network [OSTI]

    Glew, Neal

    classes is an exam* *ple of closure conversion. This paper argues that a direct formulation of object HOOTS99 Preliminary Version Object Closure Conversion __________________________________________________________________________ Abstract An integral part of implementing functional languages is closure conversion_the process

  8. OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Sands, M.Dale

    2013-01-01T23:59:59.000Z

    M.D. (editor) Ocean Thermal Energy Conversion (OTEC) Draftof ocean thermal energy conversion technology. U.S. Depart~June 1-11, 1980 OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC

  9. OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Sands, M.Dale

    2013-01-01T23:59:59.000Z

    M.D. (editor) Ocean Thermal Energy Conversion (OTEC) Draftr:he comnercialization of ocean thermal energy conversionJune 1-11, 1980 OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC

  10. OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Sands, M.Dale

    2013-01-01T23:59:59.000Z

    Sands, M.D. (editor) Ocean Thermal Energy Conversion (OTEC)r:he comnercialization of ocean thermal energy conversionJune 1-11, 1980 OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC

  11. Thermophotovoltaic energy conversion using photonic bandgap selective emitters

    DOE Patents [OSTI]

    Gee, James M. (Albuquerque, NM); Lin, Shawn-Yu (Albuquerque, NM); Fleming, James G. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM)

    2003-06-24T23:59:59.000Z

    A method for thermophotovoltaic generation of electricity comprises heating a metallic photonic crystal to provide selective emission of radiation that is matched to the peak spectral response of a photovoltaic cell that converts the radiation to electricity. The use of a refractory metal, such as tungsten, for the photonic crystal enables high temperature operation for high radiant flux and high dielectric contrast for a full 3D photonic bandgap, preferable for efficient thermophotovoltaic energy conversion.

  12. EIS-0284: EPA Notice of Availability of the Draft Environmental...

    Energy Savers [EERE]

    EPA Notice of Availability of the Draft Environmental Impact Statement EIS-0284: EPA Notice of Availability of the Draft Environmental Impact Statement Low Emission Boiler System...

  13. Near and far field models of external fluid mechanics of Ocean Thermal Energy Conversion (OTEC) power plants

    E-Print Network [OSTI]

    Rodríguez Buño, Mariana

    2013-01-01T23:59:59.000Z

    The world is facing the challenge of finding new renewable sources of energy - first, in response to fossil fuel reserve depletion, and second, to reduce greenhouse gas emissions. Ocean Thermal Energy Conversion (OTEC) can ...

  14. Plasmonic conversion of solar energy

    E-Print Network [OSTI]

    Clavero, Cesar

    2014-01-01T23:59:59.000Z

    Basic Research Needs for Solar Energy Utilization, BasicS. Pillai and M. A. Green, Solar Energy Materials and SolarPlasmonic conversion of solar energy César Clavero Plasma

  15. Nanostructured High Temperature Bulk Thermoelectric Energy Conversion...

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

    High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste Heat Recovery Nanostructured High Temperature Bulk Thermoelectric Energy Conversion for Efficient Waste...

  16. Biochemical Conversion | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergyDepartmentWindConversion Biochemical Conversion This area focuses

  17. Conversations for a Smarter Planet: 16 in a Series IBM, the IBM logo and ibm.com are trademarks of International Business Machines Corporation, registered in many jurisdictions worldwide. A current list of IBM trademarks is available on the Web at "Copyri

    E-Print Network [OSTI]

    with nature--it harnesses it. Smart buildings can reduce energy consumption and CO2 emissions by 50% to 70 and most energy-efficient commercial building, through such innovations as 100% waste and water reclamation as 50% of the water that flows into them. By 2025, buildings will be the single largest energy consumers

  18. Fluidized bed controls refinery emissions

    SciTech Connect (OSTI)

    Abdulally, I.F.; Kersey, B.R.

    1986-05-01T23:59:59.000Z

    In early 1983, two fluidized bed, waste heat boilers entered into service at the Ashland Petroleum Company refinery site in Ashland, Kentucky. These fluidized bed units are coupled to the regeneration end of a newly developed reduced crude conversion (RCC) process and served the purpose of reducing CO, SO/sub 2/ and NO/sub x/ emissions while recuperating waste heat from the regenerator process off gases.

  19. Semiconductor nanowires for photovoltaic and photoelectrochemical energy conversion

    SciTech Connect (OSTI)

    Dasgupta, Neil; Yang, Peidong

    2013-01-23T23:59:59.000Z

    Semiconductor nanowires (NW) possess several beneficial properties for efficient conversion of solar energy into electricity and chemical energy. Due to their efficient absorption of light, short distances for minority carriers to travel, high surface-to-volume ratios, and the availability of scalable synthesis methods, they provide a pathway to address the low cost-to-power requirements for wide-scale adaptation of solar energy conversion technologies. Here we highlight recent progress in our group towards implementation of NW components as photovoltaic and photoelectrochemical energy conversion devices. An emphasis is placed on the unique properties of these one-dimensional (1D) structures, which enable the use of abundant, low-cost materials and improved energy conversion efficiency compared to bulk devices.

  20. HOOTS99 Preliminary Version Object Closure Conversion

    E-Print Network [OSTI]

    Glew, Neal

    is an example of closure conversion. This paper argues that a direct formulation of object closure conversionHOOTS99 Preliminary Version Object Closure Conversion Neal Glew 1 Department of Computer Science conversion--the process of converting code with free variables into closed code and auxiliary data structures

  1. Biochemical Conversion Pilot Plant (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-06-01T23:59:59.000Z

    This fact sheet provides information about Biochemical Conversion Pilot Plant capabilities and resources at NREL.

  2. Availability Page 1 of 2 AVAILABILITY ANALYSIS

    E-Print Network [OSTI]

    Oliver, Douglas L.

    Availability Page 1 of 2 AVAILABILITY ANALYSIS Section 46a-68-39 This section was found to be in compliance in the previous submission, and there were no proposals/recommendations. Availability analyses, the following were consulted in determining availability computations: 1. Employment figures (immediate labor

  3. SIGNATURES OF PHOTON-AXION CONVERSION IN THE THERMAL SPECTRA AND POLARIZATION OF NEUTRON STARS

    SciTech Connect (OSTI)

    Perna, Rosalba [JILA and Department of Astrophysical and Planetary Science, University of Colorado at Boulder, 440 UCB, Boulder, CO 80304 (United States); Ho, Wynn C. G. [School of Mathematics, University of Southampton, Southampton, SO17 1BJ (United Kingdom); Verde, Licia; Jimenez, Raul [ICREA and ICC, University of Barcelona (IEEC-UB) (Spain); Van Adelsberg, Matthew [Center for Relativistic Astrophysics and School of Physics Georgia Institute of Technology, Atlanta, GA 30332 (United States)

    2012-04-01T23:59:59.000Z

    Conversion of photons into axions under the presence of a strong magnetic field can dim the radiation from magnetized astrophysical objects. Here we perform a detailed calculation aimed at quantifying the signatures of photon-axion conversion in the spectra, light curves, and polarization of neutron stars (NSs). We take into account the energy and angle dependence of the conversion probability and the surface thermal emission from NSs. The latter is computed from magnetized atmosphere models that include the effect of photon polarization mode conversion due to vacuum polarization. The resulting spectral models, inclusive of the general-relativistic effects of gravitational redshift and light deflection, allow us to make realistic predictions for the effects of photon to axion conversion on observed NS spectra, light curves, and polarization signals. We identify unique signatures of the conversion, such as an increase of the effective area of a hot spot as it rotates away from the observer line of sight. For a star emitting from the entire surface, the conversion produces apparent radii that are either larger or smaller (depending on axion mass and coupling strength) than the limits set by NS equations of state. For an emission region that is observed phase-on, photon-axion conversion results in an inversion of the plane of polarization with respect to the no-conversion case. While the quantitative details of the features that we identify depend on NS properties (magnetic field strength and temperature) and axion parameters, the spectral and polarization signatures induced by photon-axion conversion are distinctive enough to make NSs very interesting and promising probes of axion physics.

  4. MUTUAL CONVERSION SOLAR AND SIDEREAL

    E-Print Network [OSTI]

    Roegel, Denis

    TABLES FOR THE MUTUAL CONVERSION OF SOLAR AND SIDEREAL TIME BY EDWARD SANG, F.R.S.E. EDINBURGH in the third example. Sang converts 3.27 seconds of solar time into 3.26 seconds of sidereal time. But sidereal time elapses faster than solar time, and the correct value is 3.28 sec- onds. In the fourth example

  5. Energy Conversion and Storage Program

    SciTech Connect (OSTI)

    Cairns, E.J.

    1992-03-01T23:59:59.000Z

    The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes, and (5) application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Topics include identification of new electrochemical couples for advanced rechargeable batteries, improvements in battery and fuel-cell materials, and the establishment of engineering principles applicable to electrochemical energy storage and conversion. Chemical Applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing waste streams from synfuel plants and coal gasifiers. Other research projects seek to identify and characterize the constituents of liquid fuel-system streams and to devise energy-efficient means for their separation. Materials Applications research includes the evaluation of the properties of advanced materials, as well as the development of novel preparation techniques. For example, the use of advanced techniques, such as sputtering and laser ablation, are being used to produce high-temperature superconducting films.

  6. Calculation of extremity neutron fluence-to-dose equivalent conversion factors

    E-Print Network [OSTI]

    Wood-Zika, Annmarie Ruth

    1997-01-01T23:59:59.000Z

    surface fluence spectra 45 LIST OF TABLES TABLE Page Properties of commercially available TLDs . . PNNL dose equivalent averaged quality factors . 16 3 MCNP input deck geometries Phantoms modeled in MCNP input decks . . Comparison of calculated..., PNNL and DOELAP fluence-to-dose equivalent conversion factors for bare '"Cf . . . . 37 Comparison of calculated, PNNL and DOELAP fluence-to-dose equivalent conversion factors for D, O moderated '"Cf. 37 Fluence-to-dose equivalent conversion factors...

  7. Modeling and analysis of energy conversion systems

    SciTech Connect (OSTI)

    Den Braven, K.R. (Idaho Univ., Moscow, ID (USA). Dept. of Mechanical Engineering); Stanger, S. (EG and G Idaho, Inc., Idaho Falls, ID (USA))

    1990-10-01T23:59:59.000Z

    An investigation was conducted to assess the need for and the feasibility of developing a computer code that could model thermodynamic systems and predict the performance of energy conversion systems. To assess the market need for this code, representatives of a few industrial organizations were contacted, including manufacturers, system and component designers, and research personnel. Researchers and small manufacturers, designers, and installers were very interested in the possibility of using the proposed code. However, large companies were satisfied with the existing codes that they have developed for their own use. Also, a survey was conduced of available codes that could be used or possibly modified for the desired purpose. The codes were evaluated with respect to a list of desirable features, which was prepared as a result of the survey. A few publicly available codes were found that might be suitable. The development, verification, and maintenance of such a code would require a substantial, ongoing effort. 21 refs.

  8. Sandia National Laboratories: Biochemical Conversion Program

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

    with: Biochemical Conversion Program * Biofuels * Combustion Research Facility * CRF * Energy * Lignocellulosic biomass * Microalgae * SAND 2011-5054W * Transportation Energy...

  9. Petar Ljusev SIngle Conversion stage AMplifier

    E-Print Network [OSTI]

    . The proposed SICAM solution strives for direct energy conversion from the mains to the audio outputPetar Ljusev SIngle Conversion stage AMplifier - SICAM PhD thesis, December 2005 #12;#12;To Elena of the project "SICAM - SIngle Conversion stage AMplifier", funded by the Danish Energy Authority under the EFP

  10. Data Conversion in Residue Number System

    E-Print Network [OSTI]

    Zilic, Zeljko

    for direct conversion when interaction with the real analog world is required. We first develop two efficient schemes for direct analog-to-residue conversion. Another efficient scheme for direct residue analogique réel est nécessaire. Nous dévelopons deux systèmes efficaces pour la conversion directe du domaine

  11. HOOTS99 Preliminary Version Object Closure Conversion

    E-Print Network [OSTI]

    Glew, Neal

    classes is an example of closure conversion. This paper argues that a direct formulation of object closureHOOTS99 Preliminary Version Object Closure Conversion Neal Glew 1 Department of Computer Science conversion---the process of converting code with free variables into closed code and auxiliary data

  12. US energy conversion and use characteristics

    SciTech Connect (OSTI)

    Imhoff, C.H.; Liberman, A.; Ashton, W.B.

    1982-02-01T23:59:59.000Z

    The long-range goal of the Energy Conversion and Utilization Technology (ECUT) Program is to enhance energy productivity in all energy-use sectors by supporting research on improved efficiency and fuel switching capability in the conversion and utilization of energy. Regardless of the deficiencies of current information, a summary of the best available energy-use information is needed now to support current ECUT program planning. This document is the initial draft of this type of summary and serves as a data book that will present current and periodically updated descriptions of the following aspects of energy use: gross US energy consumption in each major energy-use sector; energy consumption by fuel type in each sector; energy efficiency of major equipment/processes; and inventories, replacement rates, and use patterns for major energy-using capital stocks. These data will help the ECUT program staff perform two vital planning functions: determine areas in which research to improve energy productivity might provide significant energy savings or fuel switching and estimate the actual effect that specific research projects may have on energy productivity and conservation. Descriptions of the data sources and examples of the uses of the different types of data are provided in Section 2. The energy-use information is presented in the last four sections; Section 3 contains general, national consumption data; and Sections 4 through 6 contain residential/commercial, industrial, and transportation consumption data, respectively. (MCW)

  13. Next-Generation Thermionic Solar Energy Conversion | Department...

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

    Next-Generation Thermionic Solar Energy Conversion Next-Generation Thermionic Solar Energy Conversion This fact sheet describes a next-generation thermionic solar energy conversion...

  14. DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    Commercial ocean thermal energy conversion ( OTEC) plants byand M.D. Sands. Ocean thermal energy conversion (OTEC) pilotfield of ocean thermal energy conversion discharges. I~. L.

  15. OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS

    E-Print Network [OSTI]

    Sands, M. D.

    2011-01-01T23:59:59.000Z

    of ocean thermal energy conversion technology. U.S. DOE.Open cycle ocean thermal energy conversion. A preliminaryof the Fifth Ocean Thermal Energy Conversion Conference,

  16. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    Sands. 1980. Ocean thermal energy conversion (OTEC) pilotCommercial ocean thermal energy conversion (OTEC) plants byof the Fifth Ocean Thermal Energy Conversion Conference,

  17. Recycling of wasted energy : thermal to electrical energy conversion

    E-Print Network [OSTI]

    Lim, Hyuck

    2011-01-01T23:59:59.000Z

    Direct energy conversion ..developed. Typically, direct energy conversion is achievedTechnologies 1.2.1. Direct energy conversion In a direct

  18. OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Sands, M.Dale

    2013-01-01T23:59:59.000Z

    1980 :. i l OCEAN THERMAL ENERGY CONVERSION: ENVIRONMENTALM.D. (editor). 1980. Ocean Thermal Energy Conversion DraftDevelopment Plan. Ocean Thermal Energy Conversion. U.S. DOE

  19. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    Commercial ocean thermal energy conversion (OTEC) plants byof the Fifth Ocean Thermal Energy Conversion Conference,Sands. 1980. Ocean thermal energy conversion (OTEC) pilot

  20. OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS

    E-Print Network [OSTI]

    Sands, M. D.

    2011-01-01T23:59:59.000Z

    of ocean thermal energy conversion technology. U.S. DOE.Open cycle ocean thermal energy conversion. A preliminaryCompany. Ocean thermal energy conversion mission analysis

  1. DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    Commercial ocean thermal energy conversion ( OTEC) plants byfield of ocean thermal energy conversion discharges. I~. L.II of the Sixth Ocean Thermal Energy conversion Conference.

  2. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    Commercial ocean thermal energy conversion (OTEC) plants bySands. 1980. Ocean thermal energy conversion (OTEC) pilotof the Ocean Thermal Energy Conversion (OTEC) Biofouling,

  3. OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS

    E-Print Network [OSTI]

    Sands, M. D.

    2011-01-01T23:59:59.000Z

    of the Ocean Thermal Energy Conversion (OTEC) Biofouling,development of ocean thermal energy conversion (OTEC) plant-impact assessment ocean thermal energy conversion (OTEC)

  4. DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    Commercial ocean thermal energy conversion ( OTEC) plants bySands. Ocean thermal energy conversion (OTEC) pilot plantof the Ocean Thermal Energy Conversion (OTEC) Biofouling,

  5. DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    1979. Commercial ocean thermal energy conversion ( OTEC)field of ocean thermal energy conversion discharges. I~. L.II of the Sixth Ocean Thermal Energy conversion Conference.

  6. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    1979. Commercial ocean thermal energy conversion (OTEC)of the Fifth Ocean Thermal Energy Conversion Conference,Sands. 1980. Ocean thermal energy conversion (OTEC) pilot

  7. OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Sands, M.Dale

    2013-01-01T23:59:59.000Z

    M.D. (editor). 1980. Ocean Thermal Energy Conversion Draft1980 :. i l OCEAN THERMAL ENERGY CONVERSION: ENVIRONMENTALDevelopment Plan. Ocean Thermal Energy Conversion. U.S. DOE

  8. OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS

    E-Print Network [OSTI]

    Sands, M. D.

    2011-01-01T23:59:59.000Z

    for the commercialization of ocean thermal energy conversionE. Hathaway. Open cycle ocean thermal energy conversion. AElectric Company. Ocean thermal energy conversion mission

  9. DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    1979. Commercial ocean thermal energy conversion ( OTEC)the intermediate field of ocean thermal energy conversionII of the Sixth Ocean Thermal Energy conversion Conference.

  10. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    1979. Commercial ocean thermal energy conversion (OTEC)of the Fifth Ocean Thermal Energy Conversion Conference,and M.D. Sands. 1980. Ocean thermal energy conversion (OTEC)

  11. Carbon dioxide release from ocean thermal energy conversion (OTEC) cycles

    SciTech Connect (OSTI)

    Green, H.J. (Solar Energy Research Inst., Golden, CO (USA)); Guenther, P.R. (Scripps Institution of Oceanography, La Jolla, CA (USA))

    1990-09-01T23:59:59.000Z

    This paper presents the results of recent measurements of CO{sub 2} release from an open-cycle ocean thermal energy conversion (OTEC) experiment. Based on these data, the rate of short-term CO{sub 2} release from future open-cycle OTEC plants is projected to be 15 to 25 times smaller than that from fossil-fueled electric power plants. OTEC system that incorporate subsurface mixed discharge are expected to result in no long-term release. OTEC plants can significantly reduce CO{sub 2} emissions when substituted for fossil-fueled power generation. 12 refs., 4 figs., 3 tabs.

  12. Low work function materials for microminiature energy conversion and recovery applications

    DOE Patents [OSTI]

    Zavadil, Kevin R.; Ruffner, Judith A.; King, Donald B.

    2003-05-13T23:59:59.000Z

    Low work function materials are disclosed together with methods for their manufacture and integration with electrodes used in thermionic conversion applications (specifically microminiature thermionic conversion applications). The materials include a mixed oxide system and metal in a compositionally modulated structure comprised of localized discontinuous structures of material that are deposited using techniques suited to IC manufacture, such as rf sputtering or CVD. The structures, which can include layers are then heated to coalescence yielding a thin film that is both durable and capable of electron emission under thermionic conversion conditions used for microminiature thermionic converters. Using the principles of the invention, thin film electrodes (emitters and collectors) required for microconverter technology are manufactured using a single process deposition so as to allow for full fabrication integration consistent with batch processing, and tailoring of emission/collection properties. In the preferred embodiment, the individual layers include mixed BaSrCaO, scandium oxide and tungsten.

  13. High resolution A/D conversion based on piecewise conversion at lower resolution

    SciTech Connect (OSTI)

    Terwilliger, Steve (Albuquerque, NM)

    2012-06-05T23:59:59.000Z

    Piecewise conversion of an analog input signal is performed utilizing a plurality of relatively lower bit resolution A/D conversions. The results of this piecewise conversion are interpreted to achieve a relatively higher bit resolution A/D conversion without sampling frequency penalty.

  14. Biological Conversion of Sugars to Hydrocarbons Technology Pathway

    SciTech Connect (OSTI)

    Davis, Ryan; Biddy, Mary J.; Tan, Eric; Tao, Ling; Jones, Susanne B.

    2013-03-31T23:59:59.000Z

    In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. This technology pathway case investigates the biological conversion of biomass derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline, diesel and jet range hydrocarbon blendstocks.

  15. Zero emission coal

    SciTech Connect (OSTI)

    Ziock, H.; Lackner, K.

    2000-08-01T23:59:59.000Z

    We discuss a novel, emission-free process for producing hydrogen or electricity from coal. Even though we focus on coal, the basic design is compatible with any carbonaceous fuel. The process uses cyclical carbonation of calcium oxide to promote the production of hydrogen from carbon and water. The carbonation of the calcium oxide removes carbon dioxide from the reaction products and provides the additional energy necessary to complete hydrogen production without additional combustion of carbon. The calcination of the resulting calcium carbonate is accomplished using the high temperature waste heat from solid oxide fuel cells (SOFC), which generate electricity from hydrogen fuel. Converting waste heat back to useful chemical energy allows the process to achieve very high conversion efficiency from fuel energy to electrical energy. As the process is essentially closed-loop, the process is able to achieve zero emissions if the concentrated exhaust stream of CO{sub 2} is sequestered. Carbon dioxide disposal is accomplished by the production of magnesium carbonate from ultramafic rock. The end products of the sequestration process are stable naturally occurring minerals. Sufficient rich ultramafic deposits exist to easily handle all the world's coal.

  16. A Review of Previous Research in Direct Energy Conversion Fission Reactors

    SciTech Connect (OSTI)

    DUONG,HENRY; POLANSKY,GARY F.; SANDERS,THOMAS L.; SIEGEL,MALCOLM D.

    1999-09-22T23:59:59.000Z

    From the earliest days of power reactor development, direct energy conversion was an obvious choice to produce high efficiency electric power generation. Directly capturing the energy of the fission fragments produced during nuclear fission avoids the intermediate conversion to thermal energy and the efficiency limitations of classical thermodynamics. Efficiencies of more than 80% are possible, independent of operational temperature. Direct energy conversion fission reactors would possess a number of unique characteristics that would make them very attractive for commercial power generation. These reactors would be modular in design with integral power conversion and operate at low pressures and temperatures. They would operate at high efficiency and produce power well suited for long distance transmission. They would feature large safety margins and passively safe design. Ideally suited to production by advanced manufacturing techniques, direct energy conversion fission reactors could be produced more economically than conventional reactor designs. The history of direct energy conversion can be considered as dating back to 1913 when Moseleyl demonstrated that charged particle emission could be used to buildup a voltage. Soon after the successful operation of a nuclear reactor, E.P. Wigner suggested the use of fission fragments for direct energy conversion. Over a decade after Wigner's suggestion, the first theoretical treatment of the conversion of fission fragment kinetic energy into electrical potential appeared in the literature. Over the ten years that followed, a number of researchers investigated various aspects of fission fragment direct energy conversion. Experiments were performed that validated the basic physics of the concept, but a variety of technical challenges limited the efficiencies that were achieved. Most research in direct energy conversion ceased in the US by the late 1960s. Sporadic interest in the concept appears in the literature until this day, but there have been no recent significant programs to develop the technology.

  17. Tenneco upgrades system with equipment conversion

    SciTech Connect (OSTI)

    Wright, K. [Ariel Corp., Mt. Vernon, OH (United States)

    1995-10-01T23:59:59.000Z

    Tenneco Gas, Inc., Houston, recently completed the successful conversion of over 14,300 horsepower compression equipment at its transmission in Catlettsburg, KY. The system consists of three identical Ariel JGC/6 compressors, driven by three matching Ansaldo electric motors, capable of running between 450 and 900 rpm. These variable speed, synchronous electric motors allow for greater flexibility, without the use of traditional cylinder unloaders. If desired Eureka Energy Systems, Richardson, TX designed the compressor package. One of Tenneco`s objectives when selecting a package to upgrade existing compression capabilities was to ensure compliance with future regulations promulgated pursuant to the Clean Air Act Amendments of 1990. Initially, Tenneco considered separable compressors because of the availability of the newer, clean burning, gas ignited drivers in the 5,000 horsepower range, such as the Caterpillar 3612 and 3616. This paper reviews the design, performance and comparative operating cost of these compressor units.

  18. Apparatus and method for pyroelectric power conversion

    DOE Patents [OSTI]

    Olsen, R.B.

    1984-01-10T23:59:59.000Z

    Apparatus and method for converting heat to electrical energy by the use of one or more capacitors having temperature dependent capacitance are disclosed. The capacitor is cycled between relatively high and relatively low temperatures by successive thermal contact with relatively high and relatively low temperature portions of a heat transfer medium having a temperature gradient therein. Upon heating of the capacitor, the capacitance thereof is reduced, so that a charge therein is caused to expand into associated external circuitry in which it is available to do electrical work. The capacitor is then cooled and recharged and the cycle is repeated. The electrical output of the capacitor results from the regenerative delivery of heat to and removal of heat from the capacitor by the heat transfer medium, and efficient conversion of heat to electric energy is thereby effected. 12 figs.

  19. Cloud Computing og availability

    E-Print Network [OSTI]

    Christensen, Henrik Bærbak

    Cloud Computing og availability Projekt i pålidelighed Henrik Lavdal - 20010210 Søren Bardino Kaa - 20011654 Gruppe 8 19-03-2010 #12;Cloud Computing og availability Side 2 af 28 Indholdsfortegnelse as a Service (SaaS) ...................................................................9 Availability i cloud

  20. Conversion of raw carbonaceous fuels

    DOE Patents [OSTI]

    Cooper, John F. (Oakland, CA)

    2007-08-07T23:59:59.000Z

    Three configurations for an electrochemical cell are utilized to generate electric power from the reaction of oxygen or air with porous plates or particulates of carbon, arranged such that waste heat from the electrochemical cells is allowed to flow upwards through a storage chamber or port containing raw carbonaceous fuel. These configurations allow combining the separate processes of devolatilization, pyrolysis and electrochemical conversion of carbon to electric power into a single unit process, fed with raw fuel and exhausting high BTU gases, electric power, and substantially pure CO.sub.2 during operation.

  1. Sandia Energy - Energy Conversion Efficiency

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Press ReleasesInApplied &ClimateContactEnergy Conversion

  2. 2011 Biomass Program Platform Peer Review: Thermochemical Conversion...

    Energy Savers [EERE]

    Thermochemical Conversion 2011 Biomass Program Platform Peer Review: Thermochemical Conversion "This document summarizes the recommendations and evaluations provided by an...

  3. Evaluation of aftermarket LPG conversion kits in light-duty vehicle applications. Final report

    SciTech Connect (OSTI)

    Bass, E.A. [Southwest Research Inst., San Antonio, TX (US)] [Southwest Research Inst., San Antonio, TX (US)

    1993-06-01T23:59:59.000Z

    SwRI was contracted by NREL to evaluate three LPG conversion kits on a Chevrolet Lumina. The objective of the project was to measure the Federal Test Procedure (FTP) emissions and fuel economy of these kits, and compare their performance to gasoline-fueled operation and to each other. Varying LPG fuel blends allowed a preliminary look at the potential for fuel system disturbance. The project required kit installation and adjustment according to manufacturer`s instructions. A limited amount of trouble diagnosis was also performed on the fuel systems. A simultaneous contract from the Texas Railroad Commission, in cooperation with NREL, provided funds for additional testing with market fuels (HD5 propane and industry average gasoline) and hydrocarbon (HC) emissions speciation to determine the ozone-forming potential of LPG HC emissions. This report documents the procurement, installation, and testing of these LPG conversion kits.

  4. Dual-fuel engine conversions evaluated by U.S. Navy

    SciTech Connect (OSTI)

    NONE

    1996-10-01T23:59:59.000Z

    In seeking ways to reduce emissions from two-stroke locomotive type engines, the Navy has evaluated dual-fuel conversions operating on a compression ignition cycle, using up to 94% natural gas and 6% diesel pilot fuel. The Navy has conducted an evaluation and test program under the direction of Dr. Normnn L. Helgeson, at the Naval Facilities Engineering Service Center in Port Hueneme, California. Of the Navy`s many diesel engines, those installed in its MUSE (mobile utility support equipment) units for temporary electrical power were the first Navy off-road engines to be affected by emissions regulations. Most of the units are powered by the EMD 645 engine, and when burning diesel fuel do not meet the emission requirements in many areas of the country. This paper discusses the changes and results of the conversion and shakedown tests.

  5. Click `Search Availability'

    E-Print Network [OSTI]

    Suzuki, Masatsugu

    #12;Click `Search Availability' How to search for tutor availability #12;Choose `University Tutoring Services' from the drop down menu How to search for tutor availability #12;Choose the course you availability #12;Click on the appointment time you wish to receive tutoring How to sign up for a tutor #12;An

  6. Design, analysis and optimization of the power conversion system for the Modular Pebble Bed Reactor System

    E-Print Network [OSTI]

    Wang, Chunyun, 1968-

    2003-01-01T23:59:59.000Z

    The Modular Pebble Bed Reactor system (MPBR) requires a gas turbine cycle (Brayton cycle) as the power conversion system for it to achieve economic competitiveness as a GenIV nuclear system. The availability of controllable ...

  7. Saving Fuel, Reducing Emissions

    E-Print Network [OSTI]

    Kammen, Daniel M.; Arons, Samuel M.; Lemoine, Derek M.; Hummel, Holmes

    2009-01-01T23:59:59.000Z

    lower greenhouse gas emissions from electricity productionAssessment of Greenhouse Gas Emissions from Plug-in Hybridof national greenhouse gas emissions. Both motor vehicle

  8. Up-conversion luminescence in Er{sup 3+}/Yb{sup 3+}-codoped PbTiO{sub 3} perovskite obtained via Pechini method

    SciTech Connect (OSTI)

    Lemos, F.C.D. [Departamento de Quimica, Universidade Federal do Rio Grande do Norte, C.P. 1605 CEP 59078-970, Natal, RN (Brazil); Melo, D.M.A. [Departamento de Quimica, Universidade Federal do Rio Grande do Norte, C.P. 1605 CEP 59078-970, Natal, RN (Brazil); Silva, J.E.C. da [Campus de Araguaina, Universidade Federal do Tocantins, R. Humberto de Campus, 508, B. Sao Joao, CEP 77807-060, Araguaina, TO (Brazil)]. E-mail: jecs@uft.edu.br

    2005-01-04T23:59:59.000Z

    Efficient infrared-to-visible conversion by Er{sup 3+}/Yb{sup 3+}-codoped PbTiO{sub 3} perovskite will be reported. The process is observed under 980 nm laser diode (GAs:Si) excitation and results in the generation of green ({approx}555 nm) and red ({approx}655 nm) emission. The main mechanism that allows for up-conversion is attributed the energy transfer among Yb and Er ions in excited states. The power up-conversion efficiency for red emission is predominant in this material. The results illustrate the large potential of this new class of material for photonic applications involving optoelectronics devices.

  9. Nanostructured High Temperature Bulk Thermoelectric Energy Conversion...

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

    Thermoelectric Energy Conversion for Efficient Waste Heat Recovery PI - Chris Caylor, GMZ Director of Thermoelectric Systems GMZ Team: Bed Poudel, Giri Joshi, Jonathan D'Angelo,...

  10. LED Street Lighting Conversion Workshop Presentations

    Broader source: Energy.gov [DOE]

    This page provides links to the presentations given at the National League of Cities Mobile Workshop, LED Street Lighting Conversion: Saving Your Community Money, While Improving Public Safety,...

  11. "Approaches to Ultrahigh Efficiency Solar Energy Conversion"...

    Office of Science (SC) Website

    "Approaches to Ultrahigh Efficiency Solar Energy Conversion" Webinar Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events EFRC News...

  12. "Fundamental Challenges in Solar Energy Conversion" workshop...

    Office of Science (SC) Website

    Fundamental Challenges in Solar Energy Conversion" workshop hosted by LMI-EFRC Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events...

  13. Automotive Waste Heat Conversion to Power Program

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

    confidential or otherwise restricted information Project ID ace47lagrandeur Automotive Waste Heat Conversion to Power Program- 2009 Hydrogen Program and Vehicle...

  14. Automotive Waste Heat Conversion to Power Program

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

    Program Start Date: Oct '04 Program End date: Oct '10 Percent Complete: 80% 2 Automotive Waste Heat Conversion to Power Program- Vehicle Technologies Program Annual Merit...

  15. Conversion Technologies for Advanced Biofuels - Carbohydrates...

    Energy Savers [EERE]

    Upgrading Conversion Technologies for Advanced Biofuels - Carbohydrates Upgrading PNNL report-out presentation at the CTAB webinar on carbohydrates upgrading. ctabwebinarcarbohyd...

  16. Conversion Technologies for Advanced Biofuels - Carbohydrates...

    Office of Environmental Management (EM)

    Production Conversion Technologies for Advanced Biofuels - Carbohydrates Production Purdue University report-out presentation at the CTAB webinar on Carbohydrates Production....

  17. Landholders, Residential Land Conversion, and Market Signals

    E-Print Network [OSTI]

    Margulis, Harry L.

    2006-01-01T23:59:59.000Z

    465– Margulis: Landholders, Residential Land Conversion, and1983. An Analysis of Residential Developer Location FactorsHow Regulation Affects New Residential Development. New

  18. NREL: Biomass Research - Biochemical Conversion Projects

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

    NREL's projects in biochemical conversion involve three basic steps to convert biomass feedstocks to fuels: Converting biomass to sugar or other fermentation feedstock Fermenting...

  19. Electrochemomechanical Energy Conversion in Nanofluidic Channels

    E-Print Network [OSTI]

    Yang, Peidong

    Electrochemomechanical Energy Conversion in Nanofluidic Channels Hirofumi Daiguji,*, Peidong Yang the height of a nanofluidic channel containing surface charge, a unipolar solution of counterions

  20. Power conversion apparatus and method

    DOE Patents [OSTI]

    Su, Gui-Jia (Knoxville, TN)

    2012-02-07T23:59:59.000Z

    A power conversion apparatus includes an interfacing circuit that enables a current source inverter to operate from a voltage energy storage device (voltage source), such as a battery, ultracapacitor or fuel cell. The interfacing circuit, also referred to as a voltage-to-current converter, transforms the voltage source into a current source that feeds a DC current to a current source inverter. The voltage-to-current converter also provides means for controlling and maintaining a constant DC bus current that supplies the current source inverter. The voltage-to-current converter also enables the current source inverter to charge the voltage energy storage device, such as during dynamic braking of a hybrid electric vehicle, without the need of reversing the direction of the DC bus current.

  1. Understanding Availability Ranjita Bhagwan

    E-Print Network [OSTI]

    Savage, Stefan

    Understanding Availability Ranjita Bhagwan , Stefan Savage ¡ , and Geoffrey M. Voelker of peer-to-peer systems: What does it mean when we say "availability" and how does this understanding not capture the complex time- varying nature of availability in today's peer-to-peer environments. Further, we

  2. Introduction to Solar Photon Conversion

    SciTech Connect (OSTI)

    Nozik, A.; Miller, J.

    2010-11-10T23:59:59.000Z

    The efficient and cost-effective direct conversion of solar photons into solar electricity and solar fuels is one of the most important scientific and technological challenges of this century. It is estimated that at least 20 terawatts of carbon-free energy (1 and 1/2 times the total amount of all forms of energy consumed today globally), in the form of electricity and liquid and gaseous fuels, will be required by 2050 in order to avoid the most serious consequences of global climate change and to ensure adequate global energy supply that will avoid economic chaos. But in order for solar energy to contribute a major fraction of future carbon-free energy supplies, it must be priced competitively with, or perhaps even be less costly than, energy from fossil fuels and nuclear power as well as other renewable energy resources. The challenge of delivering very low-cost solar fuels and electricity will require groundbreaking advances in both fundamental and applied science. This Thematic Issue on Solar Photon Conversion will provide a review by leading researchers on the present status and prognosis of the science and technology of direct solar photoconversion to electricity and fuels. The topics covered include advanced and novel concepts for low-cost photovoltaic (PV) energy based on chemistry (dye-sensitized photoelectrodes, organic and molecular PV, multiple exciton generation in quantum dots, singlet fission), solar water splitting, redox catalysis for water oxidation and reduction, the role of nanoscience and nanocrystals in solar photoconversion, photoelectrochemical energy conversion, and photoinduced electron transfer. The direct conversion of solar photons to electricity via photovoltaic (PV) cells is a vital present-day commercial industry, with PV module production growing at about 75%/year over the past 3 years. However, the total installed yearly averaged energy capacity at the end of 2009 was about 7 GW-year (0.2% of global electricity usage). Thus, there is potential for the PV industry to grow enormously in the future (by factors of 100-300) in order for it to provide a significant fraction of total global electricity needs (currently about 3.5 TW). Such growth will be greatly facilitated by, and probably even require, major advances in the conversion efficiency and cost reduction for PV cells and modules; such advances will depend upon advances in PV science and technology, and these approaches are discussed in this Thematic Issue. Industrial and domestic electricity utilization accounts for only about 30% of the total energy consumed globally. Most ({approx}70%) of our energy consumption is in the form of liquid and gaseous fuels. Presently, solar-derived fuels are produced from biomass (labeled as biofuels) and are generated through biological photosynthesis. The global production of liquid biofuels in 2009 was about 1.6 million barrels/day, equivalent to a yearly output of about 2.5 EJ (about 1.3% of global liquid fuel utilization). The direct conversion of solar photons to fuels produces high-energy chemical products that are labeled as solar fuels; these can be produced through nonbiological approaches, generally called artificial photosynthesis. The feedstocks for artificial photosynthesis are H{sub 2}O and CO{sub 2}, either reacting as coupled oxidation-reduction reactions, as in biological photosynthesis, or by first splitting H{sub 2}O into H{sub 2} and O{sub 2} and then reacting the solar H{sub 2} with CO{sub 2} (or CO produced from CO2) in a second step to produce fuels through various well-known chemical routes involving syngas, water gas shift, and alcohol synthesis; in some applications, the generated solar H{sub 2} itself can be used as an excellent gaseous fuel, for example, in fuel cells. But at the present time, there is no solar fuels industry. Much research and development are required to create a solar fuels industry, and this Thematic Issue presents several reviews on the relevant solar fuels science and technology. The first three manuscripts relate to the daunting problem of producing

  3. Saving Fuel, Reducing Emissions

    E-Print Network [OSTI]

    Kammen, Daniel M.; Arons, Samuel M.; Lemoine, Derek M.; Hummel, Holmes

    2009-01-01T23:59:59.000Z

    COMPACT EMISSIONS HEV PHEV marginal power plant is a coalpower uses relatively little coal, but in other cases emissions

  4. Framing the Conversation: The Role of Facebook Conversations in Shopping for Eyeglasses

    E-Print Network [OSTI]

    Kane, Shaun K.

    Framing the Conversation: The Role of Facebook Conversations in Shopping for Eyeglasses Karim Said Warby Parker's Facebook page and explore the ways customers formulate questions and conversations,000 Facebook posts, consisting of photos, comments, and "likes". Using statistical analyses and qualitative

  5. Energy conversion/power plant cost-cutting

    SciTech Connect (OSTI)

    Nichols, K.

    1996-12-31T23:59:59.000Z

    This presentation by Kenneth Nichols, Barber-Nichols, Inc., is about cost-cutting in the energy conversion phase and power plant phase of geothermal energy production. Mr. Nichols discusses several ways in which improvements could be made, including: use of more efficient compressors and other equipment as they become available, anticipating reservoir resource decline and planning for it, running smaller binary systems independent of human operators, and designing plants so that they are relatively maintenance-free.

  6. 1982 annual report: Biomass Thermochemical Conversion Program

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1983-01-01T23:59:59.000Z

    This report provides a brief overview of the Thermochemical Conversion Program's activities and major accomplishments during fiscal year 1982. The objective of the Biomass Thermochemical Conversion Program is to generate scientific data and fundamental biomass converison process information that, in the long term, could lead to establishment of cost effective processes for conversion of biomass resources into clean fuels and petrochemical substitutes. The goal of the program is to improve the data base for biomass conversion by investigating the fundamental aspects of conversion technologies and exploring those parameters which are critical to these conversion processes. To achieve this objective and goal, the Thermochemical Conversion Program is sponsoring high-risk, long-term research with high payoff potential which industry is not currently sponsoring, nor is likely to support. Thermochemical conversion processes employ elevated temperatures to convert biomass materials into energy. Process examples include: combustion to produce heat, steam, electricity, direct mechanical power; gasification to produce fuel gas or synthesis gases for the production of methanol and hydrocarbon fuels; direct liquefaction to produce heavy oils or distillates; and pyrolysis to produce a mixture of oils, fuel gases, and char. A bibliography of publications for 1982 is included.

  7. Heat to electricity thermoacoustic-magnetohydrodynamic conversion

    E-Print Network [OSTI]

    Castrejon-Pita, A A

    2006-01-01T23:59:59.000Z

    In this work, a new concept for the conversion of heat into electricity is presented. The conversion is based on the combined effects of a thermoacoustic prime mover coupled with a magnetohydrodynamic generator, using different working fluids in each process. The results of preliminary experiments are also presented.

  8. Heat to electricity thermoacoustic-magnetohydrodynamic conversion

    E-Print Network [OSTI]

    A. A. Castrejon-Pita; G. Huelsz

    2006-10-12T23:59:59.000Z

    In this work, a new concept for the conversion of heat into electricity is presented. The conversion is based on the combined effects of a thermoacoustic prime mover coupled with a magnetohydrodynamic generator, using different working fluids in each process. The results of preliminary experiments are also presented.

  9. Interdigitated photovoltaic power conversion device

    DOE Patents [OSTI]

    Ward, J.S.; Wanlass, M.W.; Gessert, T.A.

    1999-04-27T23:59:59.000Z

    A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device. 15 figs.

  10. Interdigitated photovoltaic power conversion device

    DOE Patents [OSTI]

    Ward, James Scott (Englewood, CO); Wanlass, Mark Woodbury (Golden, CO); Gessert, Timothy Arthur (Conifer, CO)

    1999-01-01T23:59:59.000Z

    A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device.

  11. Available online at www.sciencedirect.com Electrochemical conversion of CO2 to useful chemicals: current

    E-Print Network [OSTI]

    Kenis, Paul J. A.

    -propanol, allyl alco- hol, acetaldehyde, propionaldehyde, acetate, methanol, ethylene glycol, glycolaldehyde

  12. Energy Conversion & Storage Program, 1993 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1994-06-01T23:59:59.000Z

    The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in: production of new synthetic fuels; development of high-performance rechargeable batteries and fuel cells; development of high-efficiency thermochemical processes for energy conversion; characterization of complex chemical processes and chemical species; and the study and application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis.

  13. Energy conversion & storage program. 1994 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1995-04-01T23:59:59.000Z

    The Energy Conversion and Storage Program investigates state-of-the-art electrochemistry, chemistry, and materials science technologies for: (1) development of high-performance rechargeable batteries and fuel cells; (2) development of high-efficiency thermochemical processes for energy conversion; (3) characterization of complex chemical processes and chemical species; (4) study and application of novel materials for energy conversion and transmission. Research projects focus on transport process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis.

  14. Experimental and Analytical Studies on Pyroelectric Waste Heat Energy Conversion

    E-Print Network [OSTI]

    Lee, Felix

    2012-01-01T23:59:59.000Z

    High-e?ciency direct conversion of heat to electrical energyJ. Yu and M. Ikura, “Direct conversion of low-grade heat tois concerned with direct conversion of thermal energy into

  15. Proceedings of the Chornobyl phytoremediation and biomass energy conversion workshop

    SciTech Connect (OSTI)

    Hartley, J. [Pacific Northwest National Lab., Richland, WA (United States)] [Pacific Northwest National Lab., Richland, WA (United States); Tokarevsky, V. [State Co. for Treatment and Disposal of Mixed Hazardous Waste (Ukraine)] [State Co. for Treatment and Disposal of Mixed Hazardous Waste (Ukraine)

    1998-06-01T23:59:59.000Z

    Many concepts, systems, technical approaches, technologies, ideas, agreements, and disagreements were vigorously discussed during the course of the 2-day workshop. The workshop was successful in generating intensive discussions on the merits of the proposed concept that includes removal of radionuclides by plants and trees (phytoremediation) to clean up soil in the Chornobyl Exclusion Zone (CEZ), use of the resultant biomass (plants and trees) to generate electrical power, and incorporation of ash in concrete casks to be used as storage containers in a licensed repository for low-level waste. Twelve years after the Chornobyl Nuclear Power Plant (ChNPP) Unit 4 accident, which occurred on April 26, 1986, the primary 4radioactive contamination of concern is from radioactive cesium ({sup 137}Cs) and strontium ({sup 90}Sr). The {sup 137}Cs and {sup 90}Sr were widely distributed throughout the CEZ. The attendees from Ukraine, Russia, Belarus, Denmark and the US provided information, discussed and debated the following issues considerably: distribution and characteristics of radionuclides in CEZ; efficacy of using trees and plants to extract radioactive cesium (Cs) and strontium (Sr) from contaminated soil; selection of energy conversion systems and technologies; necessary infrastructure for biomass harvesting, handling, transportation, and energy conversion; radioactive ash and emission management; occupational health and safety concerns for the personnel involved in this work; and economics. The attendees concluded that the overall concept has technical and possibly economic merits. However, many issues (technical, economic, risk) remain to be resolved before a viable commercial-scale implementation could take place.

  16. A finite element simulation of biological conversion processes in landfills

    SciTech Connect (OSTI)

    Robeck, M., E-mail: markus.robeck@uni-due.de [Department of Water and Waste Management, Building Sciences, University of Duisburg-Essen, Universitaetsstrasse 15, 45141 Essen (Germany); Ricken, T. [Institute of Mechanics/Computational Mechanics, Building Sciences, University of Duisburg-Essen, Universitaetsstrasse 15, 45141 Essen (Germany); Widmann, R. [Department of Water and Waste Management, Building Sciences, University of Duisburg-Essen, Universitaetsstrasse 15, 45141 Essen (Germany)

    2011-04-15T23:59:59.000Z

    Landfills are the most common way of waste disposal worldwide. Biological processes convert the organic material into an environmentally harmful landfill gas, which has an impact on the greenhouse effect. After the depositing of waste has been stopped, current conversion processes continue and emissions last for several decades and even up to 100 years and longer. A good prediction of these processes is of high importance for landfill operators as well as for authorities, but suitable models for a realistic description of landfill processes are rather poor. In order to take the strong coupled conversion processes into account, a constitutive three-dimensional model based on the multiphase Theory of Porous Media (TPM) has been developed at the University of Duisburg-Essen. The theoretical formulations are implemented in the finite element code FEAP. With the presented calculation concept we are able to simulate the coupled processes that occur in an actual landfill. The model's theoretical background and the results of the simulations as well as the meantime successfully performed simulation of a real landfill body will be shown in the following.

  17. Electron Bernstein Wave Heating and Emission in the TCV Tokamak

    E-Print Network [OSTI]

    Petitpierre, Claude

    1 Electron Bernstein Wave Heating and Emission in the TCV Tokamak A. Mueck 1 , Y. Camenen 1 , S density tokamak plasmas is limited due to reflections of the waves at so-called wave cut-offs. Electron for the first time via the O-X- B mode conversion process in a standard aspect-ratio tokamak. The results

  18. AVAILABLE NOW! Biomass Funding

    E-Print Network [OSTI]

    AVAILABLE NOW! Biomass Funding Guide 2010 The Forestry Commission and the Humber Rural Partnership (co-ordinated by East Riding of Yorkshire Council) have jointly produced a biomass funding guide fuel prices continue to rise, and the emerging biomass sector is well-placed to make a significant

  19. Summer Series 2012 - Conversation with Kathy Yelick

    ScienceCinema (OSTI)

    Kathy Yelick

    2013-06-24T23:59:59.000Z

    Jeff Miller, head of Public Affairs, sat down in conversation with Kathy Yelick, Associate Berkeley Lab Director, Computing Sciences, in the second of a series of "powerpoint-free" talks on July 18th 2012, at Berkeley Lab.

  20. Summer Series 2012 - Conversation with Kathy Yelick

    SciTech Connect (OSTI)

    Kathy Yelick

    2012-07-23T23:59:59.000Z

    Jeff Miller, head of Public Affairs, sat down in conversation with Kathy Yelick, Associate Berkeley Lab Director, Computing Sciences, in the second of a series of "powerpoint-free" talks on July 18th 2012, at Berkeley Lab.

  1. Energy Conversion and Transmission Facilities (South Dakota)

    Broader source: Energy.gov [DOE]

    This legislation applies to energy conversion facilities designed for or capable of generating 100 MW or more of electricity, wind energy facilities with a combined capacity of 100 MW, certain...

  2. OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Sands, M.Dale

    2013-01-01T23:59:59.000Z

    Presented at the 7th Ocean Energy Conference, Washington,Power Applications, Division of Ocean Energy Systems, UnitedSands, M.D. (editor) Ocean Thermal Energy Conversion (OTEC)

  3. Summer Series 2012 - Conversation with Omar Yaghi

    ScienceCinema (OSTI)

    Omar Yaghi

    2013-06-24T23:59:59.000Z

    Jeff Miller, head of Public Affairs, sat down in conversation with Omar Yaghi, director of the Molecular Foundry, in the first of a series of "powerpoint-free" talks on July 11th 2012, at Berkeley Lab.

  4. Assessment of ocean thermal energy conversion

    E-Print Network [OSTI]

    Muralidharan, Shylesh

    2012-01-01T23:59:59.000Z

    Ocean thermal energy conversion (OTEC) is a promising renewable energy technology to generate electricity and has other applications such as production of freshwater, seawater air-conditioning, marine culture and chilled-soil ...

  5. Radio frequency dc-dc power conversion

    E-Print Network [OSTI]

    Rivas, Juan, 1976-

    2007-01-01T23:59:59.000Z

    THIS THESIS addresses the development of system architectures and circuit topologies for dc-dc power conversion at very high frequencies. The systems architectures that are developed are structured to overcome limitations ...

  6. Electrokinetic Energy Conversion Efficiency in Nanofluidic Channels

    E-Print Network [OSTI]

    Dekker, Cees

    Electrokinetic Energy Conversion Efficiency in Nanofluidic Channels Frank H. J. van der Heyden- and nanofluidic devices2-5 whose geometries and material properties can be engineered. High energy

  7. Catalytic Consequences of Acid Strength in the Conversion of...

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

    Consequences of Acid Strength in the Conversion of Methanol to Dimethyl Ether. Catalytic Consequences of Acid Strength in the Conversion of Methanol to Dimethyl Ether. Abstract:...

  8. Process Design and Economics for the Conversion of Lignocellulosic...

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

    the Conversion of Lignocellulosic Biomass to Hydrocarbons: Dilute-Acid and Enzymatic Deconstruction of Biomass to Sugars and Biological Conversion of Sugars to Hydrocarbons Process...

  9. Trends in Contractor Conversion Rates | Department of Energy

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

    Contractor Conversion Rates Trends in Contractor Conversion Rates Better Buildings Residential Network Workforce Business Partners Peer Exchange Call Series: Trends in Contractor...

  10. Evaluation of Thermal to Electrical Energy Conversion of High...

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

    Thermal to Electrical Energy Conversion of High Temperature Skutterudite-Based Thermoelectric Modules Evaluation of Thermal to Electrical Energy Conversion of High Temperature...

  11. Thermochemical Conversion: Using Heat and Catalysis to Make Biofuels...

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

    Conversion: Using Heat and Catalysis to Make Biofuels and Bioproducts Thermochemical Conversion: Using Heat and Catalysis to Make Biofuels and Bioproducts The Bioenergy...

  12. Potential Impacts of Hydrokinetic and Wave Energy Conversion...

    Energy Savers [EERE]

    Potential Impacts of Hydrokinetic and Wave Energy Conversion Technologies on Aquatic Environments Potential Impacts of Hydrokinetic and Wave Energy Conversion Technologies on...

  13. WEC up! Energy Department Announces Wave Energy Conversion Prize...

    Office of Environmental Management (EM)

    WEC up Energy Department Announces Wave Energy Conversion Prize Administrator WEC up Energy Department Announces Wave Energy Conversion Prize Administrator September 24, 2014 -...

  14. 2011 Biomass Program Platform Peer Review: Biochemical Conversion...

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

    Biochemical Conversion 2011 Biomass Program Platform Peer Review: Biochemical Conversion This document summarizes the recommendations and evaluations provided by an independent...

  15. New process speeds conversion of biomass to fuels

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

    Conversion of Biomass to Fuels New process speeds conversion of biomass to fuels Scientists made a major step forward recently towards transforming biomass-derived molecules into...

  16. District Wide Geothermal Heating Conversion Blaine County School...

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

    District Wide Geothermal Heating Conversion Blaine County School District District Wide Geothermal Heating Conversion Blaine County School District This project will impact the...

  17. aspergillus fumigatus conversion: Topics by E-print Network

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

    135 Framing the Conversation: The Role of Facebook Conversations in Shopping for Eyeglasses Computer Technologies and Information Sciences Websites Summary: Framing the...

  18. alkane conversion chemistry: Topics by E-print Network

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

    A. 472 Framing the Conversation: The Role of Facebook Conversations in Shopping for Eyeglasses Computer Technologies and Information Sciences Websites Summary: Framing the...

  19. antidiabetic bis-maltolato-oxovanadiumiv conversion: Topics by...

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

    88 Framing the Conversation: The Role of Facebook Conversations in Shopping for Eyeglasses Computer Technologies and Information Sciences Websites Summary: Framing the...

  20. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    on a OTR truck schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of...

  1. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    ace049schock2011o.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of...

  2. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    truck system. schock.pdf More Documents & Publications Thermoelectric Conversion of Wate Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Waste...

  3. Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion...

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

    High-Temperature Bulk Thermoelectric Energy Conversion for Efficient Automotive Waste Heat Recovery Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion for...

  4. EIS-0360: Depleted Uranium Oxide Conversion Product at the Portsmouth...

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

    60: Depleted Uranium Oxide Conversion Product at the Portsmouth, Ohio Site EIS-0360: Depleted Uranium Oxide Conversion Product at the Portsmouth, Ohio Site Summary This...

  5. Ocean Thermal Energy Conversion: Potential Environmental Impacts and Fisheries

    E-Print Network [OSTI]

    Hawai'i at Manoa, University of

    Ocean Thermal Energy Conversion: Potential Environmental Impacts and Fisheries Christina M Comfort Institute #12;Ocean Thermal Energy Conversion (OTEC) · Renewable energy ­ ocean thermal gradient · Large

  6. Linear mode conversion of Langmuir/z-mode waves to radiation: Scalings of conversion efficiencies and propagation angles with temperature and magnetic field orientation

    SciTech Connect (OSTI)

    Schleyer, F.; Cairns, Iver H. [School of Physics, University of Sydney, NSW 2006 (Australia); Kim, E.-H. [Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)

    2013-03-15T23:59:59.000Z

    Linear mode conversion (LMC) is the linear transfer of energy from one wave mode to another in an inhomogeneous plasma. It is relevant to laboratory plasmas and multiple solar system radio emissions, such as continuum radiation from planetary magnetospheres and type II and III radio bursts from the solar corona and solar wind. This paper simulates LMC of waves defined by warm, magnetized fluid theory, specifically the conversion of Langmuir/z-mode waves to electromagnetic (EM) radiation. The primary focus is the calculation of the energy and power conversion efficiencies for LMC as functions of the angle of incidence {theta} of the Langmuir/z-mode wave, temperature {beta}=T{sub e}/m{sub e}c{sup 2}, adiabatic index {gamma}, and orientation angle {phi} between the ambient density gradient {nabla}N{sub 0} and ambient magnetic field B{sub 0} in a warm, unmagnetized plasma. The ratio of these efficiencies is found to agree well as a function of {theta}, {gamma}, and {beta} with an analytical relation that depends on the group speeds of the Langmuir/z and EM wave modes. The results demonstrate that the energy conversion efficiency {epsilon} is strongly dependent on {gamma}{beta}, {phi} and {theta}, with {epsilon}{proportional_to}({gamma}{beta}){sup 1/2} and {theta}{proportional_to}({gamma}{beta}){sup 1/2}. The power conversion efficiency {epsilon}{sub p}, on the other hand, is independent of {gamma}{beta} but does vary significantly with {theta} and {phi}. The efficiencies are shown to be maximum for approximately perpendicular density gradients ({phi} Almost-Equal-To 90 Degree-Sign ) and minimal for parallel orientation ({phi}=0 Degree-Sign ) and both the energy and power conversion efficiencies peak at the same {theta}.

  7. Anomalous Emission from HII regions

    E-Print Network [OSTI]

    C. Dickinson

    2008-08-04T23:59:59.000Z

    Spinning dust appears to be the best explanation for the anomalous emission that has been observed at $\\sim 10-60$ GHz. One of the best examples of spinning dust comes from a HII region in the Perseus molecular cloud. Observations of other HII regions also show tentative evidence for excess emission at frequencies $\\sim 30$ GHz, although at lower emissivity levels. A new detection of excess emission at 31 GHz in the HII region RCW175 has been made. The most plausible explanation again comes from spinning dust. HII regions are a good place to look for spinning dust as long as accurate radio data spanning the $\\sim 5-100$ GHz range is available.

  8. Lattice effect in solid state internal conversion

    SciTech Connect (OSTI)

    Kalman, Peter; Keszthelyi, Tamas [Budapest University of Technology and Economics, Department of Experimental Physics, Budafoki ut 8. F. I.I.10, H-1521 Budapest (Hungary)

    2009-03-15T23:59:59.000Z

    The effect of the crystal lattice on nuclear fusion reactions p+d{yields}{sup 3}He taking place in internal conversion channels is studied. Fusionable particles solved in the investigated crystalline material form a sublattice. Fusion reaction is generated by a flux of incoming fusionable particles. The calculated cross sections are compared with those of an ordinary fusion reaction. The internal conversion coefficients are also calculated.

  9. A Collaborative Industry-MDRU Research Project Available for Sponsorship

    E-Print Network [OSTI]

    Michelson, David G.

    A Collaborative Industry-MDRU Research Project Available for Sponsorship Carbon Sequestration emissions. Incorporation of carbon sequestration activities into mine operations will generate economic to permanently trap the green- house gas carbon dioxide (CO2 ) thus affording environmental and regulatory

  10. Limits in late time conversion of cold dark matter into dark radiation

    SciTech Connect (OSTI)

    Boriero, D.; Holanda, P. C. de; Motta, M., E-mail: danielb@ifi.unicamp.br, E-mail: holanda@ifi.unicamp.br, E-mail: mmota@ifi.unicamp.br [Instituto de Física Gleb Wataghin – UNICAMP, 13083-859, Campinas SP (Brazil)

    2013-06-01T23:59:59.000Z

    Structure formation creates high temperature and density regions in the Universe that allow the conversion of matter into more stable states, with a corresponding emission of relativistic matter and radiation. An example of such a mechanism is the supernova event, that releases relativistic neutrinos corresponding to 99% of the binding energy of remnant neutron star. We take this phenomena as a starting point for an assumption that similar processes could occur in the dark sector, where structure formation would generate a late time conversion of cold dark matter into a relativistic form of dark matter. We performed a phenomenological study about the limits of this conversion, where we assumed a transition profile that is a generalized version of the neutrino production in supernovae events. With this assumption, we obtained an interesting modification for the constraint over the cold dark matter density. We show that when comparing with the standard ?CDM cosmology, there is no preference for conversion, although the best fit is within 1? from the standard model best fit. The methodology and the results obtained qualify this conversion hypothesis, from the large scale structure point of view, as a viable and interesting model to be tested in the future with small scale data, and mitigate discrepancies between observations at this scale and the pure cold dark matter model.

  11. Driving Down Diesel Emissions

    E-Print Network [OSTI]

    Harley, Robert

    2013-01-01T23:59:59.000Z

    Turnover on Drayage Truck Emissions at the Port of Oakland,”actions to clean up port truck emissions in Oakland serve asTurnover on Drayage Truck Emissions at the Port of Oakland,”

  12. Biomass Feedstock and Conversion Supply System Design and Analysis

    SciTech Connect (OSTI)

    Jacob J. Jacobson; Mohammad S. Roni; Patrick Lamers; Kara G. Cafferty

    2014-09-01T23:59:59.000Z

    Idaho National Laboratory (INL) supports the U.S. Department of Energy’s bioenergy research program. As part of the research program INL investigates the feedstock logistics economics and sustainability of these fuels. A series of reports were published between 2000 and 2013 to demonstrate the feedstock logistics cost. Those reports were tailored to specific feedstock and conversion process. Although those reports are different in terms of conversion, some of the process in the feedstock logistic are same for each conversion process. As a result, each report has similar information. A single report can be designed that could bring all commonality occurred in the feedstock logistics process while discussing the feedstock logistics cost for different conversion process. Therefore, this report is designed in such a way that it can capture different feedstock logistics cost while eliminating the need of writing a conversion specific design report. Previous work established the current costs based on conventional equipment and processes. The 2012 programmatic target was to demonstrate a delivered biomass logistics cost of $55/dry ton for woody biomass delivered to fast pyrolysis conversion facility. The goal was achieved by applying field and process demonstration unit-scale data from harvest, collection, storage, preprocessing, handling, and transportation operations into INL’s biomass logistics model. The goal of the 2017 Design Case is to enable expansion of biofuels production beyond highly productive resource areas by breaking the reliance of cost-competitive biofuel production on a single, low-cost feedstock. The 2017 programmatic target is to supply feedstock to the conversion facility that meets the in-feed conversion process quality specifications at a total logistics cost of $80/dry T. The $80/dry T. target encompasses total delivered feedstock cost, including both grower payment and logistics costs, while meeting all conversion in-feed quality targets. The 2012 $55/dry T. programmatic target included only logistics costs with a limited focus on biomass quantity, quality and did not include a grower payment. The 2017 Design Case explores two approaches to addressing the logistics challenge: one is an agronomic solution based on blending and integrated landscape management and the second is a logistics solution based on distributed biomass preprocessing depots. The concept behind blended feedstocks and integrated landscape management is to gain access to more regional feedstock at lower access fees (i.e., grower payment) and to reduce preprocessing costs by blending high quality feedstocks with marginal quality feedstocks. Blending has been used in the grain industry for a long time; however, the concept of blended feedstocks in the biofuel industry is a relatively new concept. The blended feedstock strategy relies on the availability of multiple feedstock sources that are blended using a least-cost formulation within an economical supply radius, which, in turn, decreases the grower payment by reducing the amount of any single biomass. This report will introduce the concepts of blending and integrated landscape management and justify their importance in meeting the 2017 programmatic goals.

  13. Exhaust emission control and diagnostics

    DOE Patents [OSTI]

    Mazur, Christopher John; Upadhyay, Devesh

    2006-11-14T23:59:59.000Z

    A diesel engine emission control system uses an upstream oxidation catalyst and a downstream SCR catalyst to reduce NOx in a lean exhaust gas environment. The engine and upstream oxidation catalyst are configured to provide approximately a 1:1 ratio of NO to NO2 entering the downstream catalyst. In this way, the downstream catalyst is insensitive to sulfur contamination, and also has improved overall catalyst NOx conversion efficiency. Degradation of the system is determined when the ratio provided is no longer near the desired 1:1 ratio. This condition is detected using measurements of engine operating conditions such as from a NOx sensor located downstream of the catalysts. Finally, control action to adjust an injected amount of reductant in the exhaust gas based on the actual NO to NO2 ratio upstream of the SCR catalyst and downstream of the oxidation catalyst.

  14. Utilize Available Resources

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening aTurbulenceUtilize Available Resources Print As soon as you arrive

  15. Sibley station low-sulfur coal conversion program

    SciTech Connect (OSTI)

    Rupinskas, R.L. [Sargent & Lundy LLC, Chicago, IL (United States); Rembold, D.F. [Missouri Public Service, Kansas City, MO (United States)

    1995-03-01T23:59:59.000Z

    After embarking on an upgrade project in 1986 that was designed to allow efficient and reliable operation of its coal-fired Sibley station through 2010, Missouri Public Service (MPS) faced the uncertainty of impending acid-rain legislation. To protect its investment in the Sibley Rebuild Program, the utility evaluated compliance options based on the emerging legislation and concluded that switching to low-sulfur coal offered the least-cost compliance approach. Compared to installing a scrubber, switching to a low-sulfur coal was also more straightforward, although not without challenges and complications. This paper reviews the Sibley low-sulfur coal conversion program. At Sibley, fuel switching was chosen only after numerous internal and external studies; it withstood late challenges from natural gas and allowance trading. Switching demanded additional equipment to blend Power River Basin coals and other coals, and demanded additional and upgraded protective equipment in the areas of fire protection, dust collection, and explosion prevention. In the year since the coal conversion project was completed the facility has operated reliably, the economic benefits of the lower cost Powder River Basin coals have been realized, and the station has also met the requirements of both phases of the acid rain legislation. Fuel switching at Sibley required a team approach and careful analysis. The coal conversion project also required attention and dedication by team members in order to minimize fuel costs while maintaining optimum plant efficiency and availability.

  16. Emissions-critical charge cooling using an organic rankine cycle

    DOE Patents [OSTI]

    Ernst, Timothy C.; Nelson, Christopher R.

    2014-07-15T23:59:59.000Z

    The disclosure provides a system including a Rankine power cycle cooling subsystem providing emissions-critical charge cooling of an input charge flow. The system includes a boiler fluidly coupled to the input charge flow, an energy conversion device fluidly coupled to the boiler, a condenser fluidly coupled to the energy conversion device, a pump fluidly coupled to the condenser and the boiler, an adjuster that adjusts at least one parameter of the Rankine power cycle subsystem to change a temperature of the input charge exiting the boiler, and a sensor adapted to sense a temperature characteristic of the vaporized input charge. The system includes a controller that can determine a target temperature of the input charge sufficient to meet or exceed predetermined target emissions and cause the adjuster to adjust at least one parameter of the Rankine power cycle to achieve the predetermined target emissions.

  17. 2008 Guidelines to Defra's GHG Conversion Factors Guidelines to Defra's GHG Conversion Factors

    E-Print Network [OSTI]

    - Imports and Exports Last updated: Jun-05 Total emissions (kg CO2) Total electricity produced Total heat produced kg CO2/kWh elecricity Total emissions (kg CO2) Total electricity produced Total heat produced kg CO2/kWh heat Emissions (in kgCO2) per kWh electricity = twice total emissions (in kgCO2) twice total

  18. Chemistry Research Projects Available to Undergraduates Consult Individual Faculty Members' Web Sites for More Details

    E-Print Network [OSTI]

    Crawford, T. Daniel

    . · Applications to solar energy conversion or electrocatalysis. · Design and synthesis of mixedmetal and photochemical energy storage. · Particular emphasis is placed on probing the propertiesChemistry Research Projects Available to Undergraduates Consult Individual Faculty Members' Web

  19. Strong converse theorems using Rényi entropies

    E-Print Network [OSTI]

    Felix Leditzky; Nilanjana Datta

    2015-06-08T23:59:59.000Z

    We use a R\\'enyi entropy approach to prove strong converse theorems for certain information-theoretic tasks which involve local operations and quantum (or classical) communication between two parties. These include state redistribution, coherent state merging, quantum state splitting, randomness extraction against quantum side information, and data compression with quantum side information. The method we employ in proving these results extends ideas developed by Sharma [arXiv:1404.5940] to prove the strong converse theorem for state merging. For state redistribution, we prove the strong converse property for the boundary of the entire achievable rate region in the $(e,q)$-plane, where $e$ and $q$ denote the entanglement cost and quantum communication cost, respectively. This extends a recent strong converse theorem for the quantum communication cost of state redistribution, proved by Berta et al. [arXiv:1409.4338]. For the other tasks as well, we provide new proofs for strong converse theorems which were previously established using smooth entropies.

  20. Direct photon cross section with conversions at CDF

    E-Print Network [OSTI]

    CDF collaboration

    2004-04-20T23:59:59.000Z

    We present a measurement of the isolated direct photon cross section in p-pbar collisions at sqrt(s) = 1.8 TeV and |eta| gamma gamma and eta -> gamma gamma events we use a new background subtraction technique which takes advantage of the tracking information available in a photon conversion event. We find that the shape of the cross section as a function of pT is poorly described by next-to-leading-order QCD predictions, but agrees with previous CDF measurements.

  1. Model Identification for Optimal Diesel Emissions Control

    SciTech Connect (OSTI)

    Stevens, Andrew J.; Sun, Yannan; Song, Xiaobo; Parker, Gordon

    2013-06-20T23:59:59.000Z

    In this paper we develop a model based con- troller for diesel emission reduction using system identification methods. Specifically, our method minimizes the downstream readings from a production NOx sensor while injecting a minimal amount of urea upstream. Based on the linear quadratic estimator we derive the closed form solution to a cost function that accounts for the case some of the system inputs are not controllable. Our cost function can also be tuned to trade-off between input usage and output optimization. Our approach performs better than a production controller in simulation. Our NOx conversion efficiency was 92.7% while the production controller achieved 92.4%. For NH3 conversion, our efficiency was 98.7% compared to 88.5% for the production controller.

  2. Multiwavelength Thermal Emission

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Multiwavelength Astronomy NASA #12;Thermal Emission #12;Thermal Emission Non-thermal p-p collisions Optical IR Radio/ Microwave sources of emission massive stars, WHIM, Ly many dust, cool objects-ray ~GeV Gamma-ray ~TeV sources of emission AGN, clusters, SNR, binaries, stars AGN (obscured), shocks

  3. Energy conversion & storage program. 1995 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1996-06-01T23:59:59.000Z

    The 1995 annual report discusses laboratory activities in the Energy Conversion and Storage (EC&S) Program. The report is divided into three categories: electrochemistry, chemical applications, and material applications. Research performed in each category during 1995 is described. Specific research topics relate to the development of high-performance rechargeable batteries and fuel cells, the development of high-efficiency thermochemical processes for energy conversion, the characterization of new chemical processes and complex chemical species, and the study and application of novel materials related to energy conversion and transmission. Research projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials and deposition technologies, and advanced methods of analysis.

  4. Unit Conversion Factors Quantity Equivalent Values

    E-Print Network [OSTI]

    Ashurst, W. Robert

    Unit Conversion Factors Quantity Equivalent Values Mass 1 kg = 1000 g = 0.001 metric ton = 2.921 inHg at 0 C Energy 1 J = 1 N·m = 107 ergs = 107 dyne·cm = 2.778×10-7 kW·h 1 J = 0.23901 cal = 0·R 10.73 psia·ft3 lbmol·R 62.36 liter·torr mol·K 0.7302 ft3·atm lbmol·R Temperature Conversions: T

  5. Residual oil conversion in Ashland FCC Units

    SciTech Connect (OSTI)

    Barger, D.F.; Miller, C.B.

    1983-03-01T23:59:59.000Z

    Ashland Petroleum Company is a production-poor refining and marketing company. A company must have refining flexibility to compete in today's crude and marketing situation. Ashland has adopted a dual approach to achieving the required refining flexibility: development and construction of the RCC process, and development of techniques to practice residual oil conversion in Ashland FCC units. This paper discusses the operating techniques Ashland has used to allow residual oil conversion to be practiced in their present day FCC's and shows some of the yields which have been achieved.

  6. Methanol engine conversion feasibility study: Phase 1

    SciTech Connect (OSTI)

    Not Available

    1983-03-01T23:59:59.000Z

    This report documents the selection of the surface-assisted ignition technique to convert two-stroke Diesel-cycle engines to methanol fuel. This study was the first phase of the Florida Department of Transportation methanol bus engine development project. It determined both the feasibility and technical approach for converting Diesel-cycle engines to methanol fuel. State-of-the-art conversion options, associated fuel formulations, and anticipated performance were identified. Economic considerations and technical limitations were examined. The surface-assisted conversion was determined to be feasible and was recommended for hardware development.

  7. The potential impact of ZT=4 thermoelectric materials on solar thermal energy conversion technologies.

    SciTech Connect (OSTI)

    Xie, M.; Gruen, D. M.; Materials Science Division; Michigan Technological Univ.

    2010-03-02T23:59:59.000Z

    State-of-the-art methodologies for the conversion of solar thermal power to electricity are based on conventional electromagnetic induction techniques. If appropriate ZT = 4 thermoelectric materials were available, it is likely that conversion efficiencies of 30-40% could be achieved. The availability of all solid state electricity generation would be a long awaited development in part because of the elimination of moving parts. This paper presents a preliminary examination of the potential performance of ZT = 4 power generators in comparison with Stirling engines taking into account specific mass, volume and cost as well as system reliability. High-performance thermoelectrics appear to have distinct advantages over magnetic induction technologies.

  8. Report on the Field Performance of A123Systems’s HymotionTM Plug-in Conversion Module for the Toyota Prius

    SciTech Connect (OSTI)

    Huang Iu; John Smart

    2009-04-01T23:59:59.000Z

    A123Systems’s HymotionTM L5 Plug-in Conversion Module (PCM) is a supplemental battery system that converts the Toyota Prius hybrid electric vehicle (HEV) into a plug-in hybrid electric vehicle (PHEV). The Hymotion system uses a lithium ion battery pack with 4.5 kWh of useable energy capacity. It recharges by plugging into a standard 110/120V outlet. The system is designed to more than double the Prius fuel efficiency for 30-40 miles of charge depleting range. If the Hymotion pack is fully depleted, the Prius operates as a normal HEV in charge sustaining mode. The Hymotion L5 PCM is the first commercially available aftermarket product complying with CARB emissions and NHTSA impact standards. Since 2006, over 50 initial production Hymotion Plug-in Conversion Modules have been installed in private fleet vehicles across the United States and Canada. With the help of the Idaho National Laboratory, which conducts the U.S. Department of Energy’s (DOE) Advanced Vehicle Testing Activity (AVTA), A123Systems collects real-time vehicle data from each fleet vehicle using on-board data loggers. These data are analyzed to determine vehicle performance. This paper presents the results of this field evaluation. Data to be presented includes the L5 Prius charge depleting range, gasoline fuel efficiency, and electrical energy efficiency. Effects of driving conditions, driving style, and charging patterns on fuel efficiency are also presented. Data show the Toyota Prius equipped with the Hymotion Plug-in Conversion Module is capable of achieving over 100 mpg in certain driving conditions when operating in charge depleting mode.

  9. Steam Plant Conversion Eliminating Campus Coal Use

    E-Print Network [OSTI]

    Dai, Pengcheng

    Steam Plant Conversion Eliminating Campus Coal Use at the Steam Plant #12;· Flagship campus region produce 14% of US coal (TN only 0.2%) Knoxville and the TN Valley #12;· UT is one of about 70 U.S. colleges and universities w/ steam plant that burns coal · Constructed in 1964, provides steam for

  10. Probing nuclear matter with jet conversions 

    E-Print Network [OSTI]

    Liu, W.; Fries, Rainer J.

    2008-01-01T23:59:59.000Z

    present some estimates for the rate of jet conversions in a consistent Fokker-Planck framework and their impact on future high-p(T) identified hadron measurements at RHIC and LHC. We also suggest some novel observables to test flavor effects....

  11. Soft materials for linear electromechanical energy conversion

    E-Print Network [OSTI]

    Antal Jakli; Nandor Eber

    2014-07-29T23:59:59.000Z

    We briefly review the literature of linear electromechanical effects of soft materials, especially in synthetic and biological polymers and liquid crystals (LCs). First we describe results on direct and converse piezoelectricity, and then we discuss a linear coupling between bending and electric polarization, which maybe called bending piezoelectricity, or flexoelectricity.

  12. IntroductiontoProcessEngineering(PTG) conversion, balances,

    E-Print Network [OSTI]

    Zevenhoven, Ron

    #3/6 IntroductiontoProcessEngineering(PTG) VST rz13 1/118 3. Energy conversion, balances rz13 2/118 3.1: Energy #12;#3/6 IntroductiontoProcessEngineering(PTG) VST rz13 3/118 What is energy? · "Energy is any quantity that changes the state of a closed system when crossing the system boundary" (SEHB

  13. Biomass Thermochemical Conversion Program. 1984 annual report

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1985-01-01T23:59:59.000Z

    The objective of the program is to generate scientific data and conversion process information that will lead to establishment of cost-effective process for converting biomass resources into clean fuels. The goal of the program is to develop the data base for biomass thermal conversion by investigating the fundamental aspects of conversion technologies and by exploring those parameters that are critical to the conversion processes. The research activities can be divided into: (1) gasification technology; (2) liquid fuels technology; (3) direct combustion technology; and (4) program support activities. These activities are described in detail in this report. Outstanding accomplishments during fiscal year 1984 include: (1) successful operation of 3-MW combustor/gas turbine system; (2) successful extended term operation of an indirectly heated, dual bed gasifier for producing medium-Btu gas; (3) determination that oxygen requirements for medium-Btu gasification of biomass in a pressurized, fluidized bed gasifier are low; (4) established interdependence of temperature and residence times on biomass pyrolysis oil yields; and (5) determination of preliminary technical feasibility of thermally gasifying high moisture biomass feedstocks. A bibliography of 1984 publications is included. 26 figs., 1 tab.

  14. Electrical power conversion is essential for improving

    E-Print Network [OSTI]

    Langendoen, Koen

    % Electricity is the most flexible and efficient source of energy to power mankind. If we improveElectrical power conversion is essential for improving energy efficiency and harvesting renewable energy. Diploma Master of Science Electrical Engineering Track: Electrical Sustainable Energy Credits 120

  15. Ocean Thermal Energy Conversion Mostly about USA

    E-Print Network [OSTI]

    Ocean Thermal Energy Conversion History Mostly about USA 1980's to 1990's and bias towards Vega Structures (Plantships) · Bottom-Mounted Structures · Model Basin Tests/ At-Sea Tests · 210 kW OC-OTEC) #12;#12;Claude's Off Rio de Janeiro (1933) · Floating Ice Plant: 2.2 MW OC- OTEC to produce 2000

  16. NAVFAC Ocean Thermal Energy Conversion (OTEC) Project

    E-Print Network [OSTI]

    NAVFAC Ocean Thermal Energy Conversion (OTEC) Project Contract Number N62583-09-C-0083 CDRL A014 OTEC Mini-Spar Pilot Plant 9 December 2011 OTEC-2011-001-4 Prepared for: Naval Facilities; distribution is unlimited. #12; Configuration Report and Development Plan Volume 4 Site Specific OTEC

  17. Ocean Thermal Energy Conversion Mostly about USA

    E-Print Network [OSTI]

    Ocean Thermal Energy Conversion History Mostly about USA 1980's to 1990's and bias towards Vega · Floating Structures (Plantships) · Bottom-Mounted Structures · Model Basin Tests/ At-Sea Tests · 210 kW OC-OTEC: Georges Claude (Open Cycle OTEC) · 1928 Ougree Experiment, France: Factory Water Outflow (33 °C) & Meuse

  18. Materials for coal conversion and utilization

    SciTech Connect (OSTI)

    Not Available

    1980-01-01T23:59:59.000Z

    The Fifth Annual Conference on Materials for Coal Conversion and Utilization was held October 7-9, 1980, at the National Bureau of Standards, Gaithersburg, Maryland. Sixty-six papers have been entered individually into ERA and EDB; two had been entered previously from other sources. (LTN)

  19. Energy Conversion: Solid-State Lighting

    E-Print Network [OSTI]

    8 Energy Conversion: Solid-State Lighting E. Kioupakis1,2 , P. Rinke1,3 , A. Janotti1 , Q. Yan1 fraction of the world's energy resources [1]. Lighting has been one of the earliest applications. The inefficiency of existing light sources that waste most of the power they consume is the reason for this large

  20. Thermochemical Conversion Pilot Plant (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-06-01T23:59:59.000Z

    The state-of-the-art thermochemical conversion pilot plant includes several configurable, complementary unit operations for testing and developing various reactors, filters, catalysts, and other unit operations. NREL engineers and scientists as well as clients can test new processes and feedstocks in a timely, cost-effective, and safe manner to obtain extensive performance data on processes or equipment.

  1. BP's Perspective on Emissions Purdue Emissions Trading Workshop

    E-Print Network [OSTI]

    BP's Perspective on Emissions Trading Purdue Emissions Trading Workshop April 30, 2010 Mark - Government policies can create a carbon price via three primary mechanisms: - Emissions trading (BP's strong

  2. Ultraviolet emissions from Gd3 + ions excited by energy transfer

    E-Print Network [OSTI]

    Cao, Wenwu

    Ultraviolet emissions from Gd3 + ions excited by energy transfer from Ho3 + ions Ying Yu October 2010 Accepted 28 October 2010 Available online 4 November 2010 Keywords: Ultraviolet emission Upconversion Energy transfer a b s t r a c t Ultraviolet (UV) upconversion (UC) emissions of Gd3+ ion were

  3. available

    E-Print Network [OSTI]

    2013-05-23T23:59:59.000Z

    (2009) provide a robustness framework for monitoring real options under uncertainty, which play a key role in the value of various projects. Duzgun and Thiele ...

  4. The Greenhouse Gas Protocol Initiative: GHG Emissions from Purchased...

    Open Energy Info (EERE)

    within a community. Separate calculators are available for emissions from stationary combustion, transport or mobile sources, refrigeration and air conditioning equipment, and...

  5. The Greenhouse Gas Protocol Initiative: GHG Emissions from Refrigerati...

    Open Energy Info (EERE)

    within a community. Separate calculators are available for emissions from stationary combustion, transport or mobile sources, purchased electricity, and several industrial sectors....

  6. Future designs of raw-gas conversion systems

    SciTech Connect (OSTI)

    Colton, J.W.; Fleming, D.K.

    1981-01-01T23:59:59.000Z

    Many different processes are available to convert raw gas to substitute natural gas (SNG). Several additional processes have been proposed and are now in development. An Institute of Gas Technology (IGT) computer program assesses the efficiency of various raw-gas conversion processes for the recovery of high-temperature enthalpy and the net export of high-pressure steam. The steam balance is a prime measure of economic attractiveness of the alternative processes. Of the currently available processes, the sequence that uses sour-gas shift followed by conventional cold sweetening and nickel-based multistage methanation is preferred. Certain novel process concepts beginning with sour-gas shift and hot-gas carbon dioxide removal should be a significant improvement. The improved processes will require either sulfur-tolerant methanation or hot-gas sulfur removal plus conventional methanation. In either case, the gas would not be cooled to room temperature before being entirely converted to methane.

  7. A universal electromagnetic energy conversion adapter based on a metamaterial absorber

    E-Print Network [OSTI]

    Xie, Yunsong; Wilson, Jeffrey D; Simons, Rainee N; Chen, Yunpeng; Xiao, John Q

    2013-01-01T23:59:59.000Z

    On the heels of metamaterial absorbers (MAs) which produce near perfect electromagnetic (EM) absorption and emission, we propose a universal electromagnetic energy conversion adapter (UEECA) based on MA. By choosing the appropriate energy converting sensors, the UEECA is able to achieve near 100% signal transfer ratio between EM energy and various forms of energy such as thermal, DC electric, or higher harmonic EM energy. The inherited subwavelength dimension and the EM field intensity enhancement can further empower UEECA in many critical applications such as energy harvesting, solar cell, and nonlinear optics. The principle of UEECA is understood with a transmission line model, which further provides a design strategy that can incorporate a variety of energy conversion devices. The concept is experimentally validated at a microwave frequency with a signal transfer ratio of 96% by choosing an RF diode as the energy converting sensor.

  8. Excess Emissions (New Mexico)

    Broader source: Energy.gov [DOE]

    This regulation establishes requirements for a source whose operation results in an excess emission and to establish criteria for a source whose operation results in an excess emission to claim an...

  9. Novel Nuclear Powered Photocatalytic Energy Conversion

    SciTech Connect (OSTI)

    White,John R.; Kinsmen,Douglas; Regan,Thomas M.; Bobek,Leo M.

    2005-08-29T23:59:59.000Z

    The University of Massachusetts Lowell Radiation Laboratory (UMLRL) is involved in a comprehensive project to investigate a unique radiation sensing and energy conversion technology with applications for in-situ monitoring of spent nuclear fuel (SNF) during cask transport and storage. The technology makes use of the gamma photons emitted from the SNF as an inherent power source for driving a GPS-class transceiver that has the ability to verify the position and contents of the SNF cask. The power conversion process, which converts the gamma photon energy into electrical power, is based on a variation of the successful dye-sensitized solar cell (DSSC) design developed by Konarka Technologies, Inc. (KTI). In particular, the focus of the current research is to make direct use of the high-energy gamma photons emitted from SNF, coupled with a scintillator material to convert some of the incident gamma photons into photons having wavelengths within the visible region of the electromagnetic spectrum. The high-energy gammas from the SNF will generate some power directly via Compton scattering and the photoelectric effect, and the generated visible photons output from the scintillator material can also be converted to electrical power in a manner similar to that of a standard solar cell. Upon successful implementation of an energy conversion device based on this new gammavoltaic principle, this inherent power source could then be utilized within SNF storage casks to drive a tamper-proof, low-power, electronic detection/security monitoring system for the spent fuel. The current project has addressed several aspects associated with this new energy conversion concept, including the development of a base conceptual design for an inherent gamma-induced power conversion unit for SNF monitoring, the characterization of the radiation environment that can be expected within a typical SNF storage system, the initial evaluation of Konarka's base solar cell design, the design and fabrication of a range of new cell materials and geometries at Konarka's manufacturing facilities, and the irradiation testing and evaluation of these new cell designs within the UML Radiation Laboratory. The primary focus of all this work was to establish the proof of concept of the basic gammavoltaic principle using a new class of dye-sensitized photon converter (DSPC) materials based on KTI's original DSSC design. In achieving this goal, this report clearly establishes the viability of the basic gammavoltaic energy conversion concept, yet it also identifies a set of challenges that must be met for practical implementation of this new technology.

  10. Emissions Trading and Social Justice

    E-Print Network [OSTI]

    Farber, Daniel A

    2011-01-01T23:59:59.000Z

    David  M.  Driesen,  Does  Emissions  Trading  Encourage  Jason  Coburn,  Emissions  Trading   and   Environmental  Szambelan,  U.S.  Emissions  Trading  Markets  for  SO 2  

  11. Transportation Licenses Available | Tech Transfer | ORNL

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

    Transportation SHARE Transportation 200301316 Integrated Inverter Control for Multiple Electric Machines 200701874 Power Conversion Apparatus and Method for Hybrid Electric and...

  12. Direct Conversion of Biomass to Fuel | ornl.gov

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

    Direct Conversion of Biomass to Fuel UGA, ORNL research team engineers microbes for the direct conversion of biomass to fuel July 11, 2014 New research from the University of...

  13. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    be 500 oC deer09schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of...

  14. Thermoelectrici Conversion of Waste Heat to Electricity in an...

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

    Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle 2005...

  15. Resource Limits and Conversion Efficiency with Implications for Climate Change

    E-Print Network [OSTI]

    Croft, Gregory Donald

    2009-01-01T23:59:59.000Z

    3.3 Fischer-Tropsch Synthesis of Liquid Fuels . 3.3.1Conversion in the U.S. – Fischer-Tropsch Synthesis, NaturalConversion in the U.S. – Fischer-Tropsch Synthesis, Natural

  16. Cross section generation strategy for high conversion light water reactors

    E-Print Network [OSTI]

    Herman, Bryan R. (Bryan Robert)

    2011-01-01T23:59:59.000Z

    High conversion water reactors (HCWR), such as the Resource-renewable Boiling Water Reactor (RBWR), are being designed with axial heterogeneity of alternating fissile and blanket zones to achieve a conversion ratio of ...

  17. OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS

    E-Print Network [OSTI]

    Sands, M. D.

    2011-01-01T23:59:59.000Z

    for the commercialization of ocean thermal energy conversionOpen cycle ocean thermal energy conversion. A preliminary1978. 'Open cycle thermal energy converS1on. A preliminary

  18. Conversion of oil shale ash into zeolite for cadmium and lead removal from wastewater

    E-Print Network [OSTI]

    Shawabkeh, Reyad A.

    Conversion of oil shale ash into zeolite for cadmium and lead removal from wastewater Reyad; available online 29 October 2003 Abstract A by-product fly ash from oil shale processing was converted shale; Ash; Zeolite; Cadmium and lead removal 1. Introduction Oil shale exists in Jordan with large

  19. Screening method for wind energy conversion systems

    SciTech Connect (OSTI)

    McConnell, R.D.

    1980-03-01T23:59:59.000Z

    A screening method is presented for evaluating wind energy conversion systems (WECS) logically and consistently. It is a set of procedures supported by a data base for large conventional WECS. The procedures are flexible enough to accommodate concepts lacking cost and engineering detail, as is the case with many innovative wind energy conversion systems (IWECS). The method uses both value indicators and simplified cost estimating procedures. Value indicators are selected ratios of engineering parameters involving energy, mass, area, and power. Cost mass ratios and cost estimating relationships were determined from the conventional WECS data base to estimate or verify installation cost estimates for IWECS. These value indicators and cost estimating procedures are shown for conventional WECS. An application of the method to a tracked-vehicle airfoil concept is presented.

  20. Integrating and Piloting Lignocellulose Biomass Conversion Technology (Presentation)

    SciTech Connect (OSTI)

    Schell, D. J.

    2009-06-15T23:59:59.000Z

    Presentation on NREL's integrated biomass conversion capabilities. Presented at the 2009 Advanced Biofuels Workshop in Denver, CO, Cellulosic Ethanol session.

  1. Workshop on Conversion Technologies for Advanced Biofuels - Carbohydra...

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

    More Documents & Publications Conversion Technologies for Advanced Biofuels - Carbohydrates Production Innovative Topics for Advanced Biofuels Cross-cutting...

  2. Resource Limits and Conversion Efficiency with Implications for Climate Change

    E-Print Network [OSTI]

    Croft, Gregory Donald

    2009-01-01T23:59:59.000Z

    Repowering Project, Clean Coal Topical Report Number 20,P. and Nel, H. G. 2004, Clean coal conversion options using

  3. Direct conversion of algal biomass to biofuel

    DOE Patents [OSTI]

    Deng, Shuguang; Patil, Prafulla D; Gude, Veera Gnaneswar

    2014-10-14T23:59:59.000Z

    A method and system for providing direct conversion of algal biomass. Optionally, the method and system can be used to directly convert dry algal biomass to biodiesels under microwave irradiation by combining the reaction and combining steps. Alternatively, wet algae can be directly processed and converted to fatty acid methyl esters, which have the major components of biodiesels, by reacting with methanol at predetermined pressure and temperature ranges.

  4. Materials for coal conversion and utilization

    SciTech Connect (OSTI)

    None,

    1981-01-01T23:59:59.000Z

    The Sixth annual conference on materials for coal conversion and utilization was held October 13-15, 1981 at the National Bureau of Standards Gaithersburg, Maryland. It was sponsored by the US Department of Energy, the Electric Power Research Institute, the Gas Research Institute and the National Bureau of Standards. Fifty-eight papers from the proceedings have been entered individually into EDB and ERA; four papers had been entered previously from other sources. (LTN)

  5. Regulation of GHG emissions from transportation fuels: Emission quota versus emission intensity standard

    E-Print Network [OSTI]

    Rajagopal, Deepak

    2010-01-01T23:59:59.000Z

    Derivation of average cost of emission reduction by blending?) and ? respectively. GHG emissions per unit of blend is, ?+ ?? i Reduction in GHG emissions with respect to unblended

  6. Flexible Conversion Ratio Fast Reactor Systems Evaluation

    SciTech Connect (OSTI)

    Neil Todreas; Pavel Hejzlar

    2008-06-30T23:59:59.000Z

    Conceptual designs of lead-cooled and liquid salt-cooled fast flexible conversion ratio reactors were developed. Both concepts have cores reated at 2400 MWt placed in a large-pool-type vessel with dual-free level, which also contains four intermediate heat exchanges coupling a primary coolant to a compact and efficient supercritical CO2 Brayton cycle power conversion system. Decay heat is removed passively using an enhanced Reactor Vessel Auxiliary Cooling System and a Passive Secondary Auxiliary Cooling System. The most important findings were that (1) it is feasible to design the lead-cooled and salt-cooled reactor with the flexible conversion ratio (CR) in the range of CR=0 and CR=1 n a manner that achieves inherent reactor shutdown in unprotected accidents, (2) the salt-cooled reactor requires Lithium thermal Expansion Modules to overcme the inherent salt coolant's large positive coolant temperature reactivity coefficient, (3) the preferable salt for fast spectrum high power density cores is NaCl-Kcl-MgCl2 as opposed to fluoride salts due to its better themal-hydraulic and neutronic characteristics, and (4) both reactor, but attain power density 3 times smaller than that of the sodium-cooled reactor.

  7. E2I EPRI Assessment Offshore Wave Energy Conversion Devices

    E-Print Network [OSTI]

    E2I EPRI Assessment Offshore Wave Energy Conversion Devices Report: E2I EPRI WP ­ 004 ­ US ­ Rev 1 #12;E2I EPRI Assessment - Offshore Wave Energy Conversion Devices Table of Contents Introduction Assessment - Offshore Wave Energy Conversion Devices Introduction E2I EPRI is leading a U.S. nationwide

  8. Chalmers University of Technology Henrik Thunman Department of Energy Conversion

    E-Print Network [OSTI]

    Chalmers University of Technology Henrik Thunman Department of Energy Conversion Modelling of the volume #12;Chalmers University of Technology Henrik Thunman Department of Energy Conversion Momentum University of Technology Henrik Thunman Department of Energy Conversion rad pp qHm x T k xx Tc u t Tc

  9. Chalmers University of Technology Henrik Thunman Department of Energy Conversion

    E-Print Network [OSTI]

    Chalmers University of Technology Henrik Thunman Department of Energy Conversion ModellingSpecies #12;Chalmers University of Technology Henrik Thunman Department of Energy Conversion Continuity+ -¸ ¹ · ¨ © § = + #12;Chalmers University of Technology Henrik Thunman Department of Energy Conversion rad pp qHm x T k

  10. Method for conversion of .beta.-hydroxy carbonyl compounds

    DOE Patents [OSTI]

    Lilga, Michael A. (Richland, WA); White, James F. (Richland, WA); Holladay, Johnathan E. (Kennewick, WA); Zacher, Alan H. (Kennewick, WA); Muzatko, Danielle S. (Kennewick, WA); Orth, Rick J. (Kennewick, WA)

    2010-03-30T23:59:59.000Z

    A process is disclosed for conversion of salts of .beta.-hydroxy carbonyl compounds forming useful conversion products including, e.g., .alpha.,.beta.-unsaturated carbonyl compounds and/or salts of .alpha.,.beta.-unsaturated carbonyl compounds. Conversion products find use, e.g., as feedstock and/or end-use chemicals.

  11. Conversion feasibility studies for the Grenoble high flux reactor

    SciTech Connect (OSTI)

    Mo, S.C.; Matos, J.E.

    1989-01-01T23:59:59.000Z

    Feasibility studies for conversion of the High Flux Reactor (RHF) at Grenoble France have been performed at the Argonne National Laboratory in cooperation with the Institut Laue-Langevin (ILL). The uranium densities required for conversion of the RHF to reduced enrichment fuels were computed to be 7.9 g/cm{sup 3} with 20% enrichment, 4.8 g/cm{sup 3} with 29% enrichment, and 2.8 g/cm{sup 3} with 45% enrichment. Thermal flux reductions at the peak in the heavy water reflector were computed to be 3% with 45% enriched fuel and 7% with 20% enriched fuel. In each case, the reactor's 44 day cycle length was preserved and no changes were made in the fuel element geometry. If the cladding thickness could be reduced from 0.38 mm to 0.30 mm, the required uranium density with 20% enrichment would be about 6.0 g/cm{sup 3} and the thermal flux reduction at the peak in the heavy water reflector would be about 7%. Significantly higher uranium densities are required in the RHF than in heavy water reactors with more conventional designs because the neutron spectrum is much harder in the RHF. Reduced enrichment fuels with the uranium densities required for use in the RHF are either not available or are not licensable at the present time. 6 refs., 6 figs., 3 tabs.

  12. Power Control and Optimization of Photovoltaic and Wind Energy Conversion Systems /

    E-Print Network [OSTI]

    Ghaffari, Azad

    2013-01-01T23:59:59.000Z

    77 5.2 Wind Energy Conversion System . . . . .Optimization and Control in Wind Energy Conversion SystemsAC matrix con- verter for wind energy conversion system,” in

  13. COMMERCIAL FISHERY DATA FROM A PROPOSED OCEAN THERMAL ENERGY CONVERSION (OTEC) SITE IN PUERTO RICO

    E-Print Network [OSTI]

    Ryan, Constance J.

    2013-01-01T23:59:59.000Z

    at several proposed Ocean Thermal Energy Conversion (OTEC)Environmental assessment: ocean thermal energy conversion (FROH A PROPOSED OCEAN THERHAL _ENERGY _CONVERSION(OTEC) --:

  14. COMMERCIAL FISHERY DATA FROM A PROPOSED OCEAN THERMAL ENERGY CONVERSION (OTEC) SITE IN PUERTO RICO

    E-Print Network [OSTI]

    Ryan, Constance J.

    2013-01-01T23:59:59.000Z

    proposed Ocean Thermal Energy Conversion (OTEC) sites toassessment: ocean thermal energy conversion (OTEC) program;operation of Ocean Thermal Energy Conversion (OTEC) power

  15. A PRELIMINARY EVALUATION OF IMPINGEMENT AND ENTRAINMENT BY OCEAN THERMAL ENERGY CONVERSION (OTEC) PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2013-01-01T23:59:59.000Z

    Assessment, Ocean Thermal Energy Conversion (OTEC) ProgramAssessment Ocean Thermal Energy Conversion (OTEC), U.S.recommendations for Ocean Thermal Energy Conversion (OTEC)

  16. A PRELIMINARY EVALUATION OF IMPINGEMENT AND ENTRAINMENT BY OCEAN THERMAL ENERGY CONVERSION (OTEC) PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2013-01-01T23:59:59.000Z

    Assessment, Ocean Thermal Energy Conversion (OTEC) ProgramAssessment Ocean Thermal Energy Conversion (OTEC), U.S.for Ocean Thermal Energy Conversion (OTEC) plants. Argonne,

  17. COMMERCIAL FISHERY DATA FROM A PROPOSED OCEAN THERMAL ENERGY CONVERSION (OTEC) SITE IN PUERTO RICO

    E-Print Network [OSTI]

    Ryan, Constance J.

    2013-01-01T23:59:59.000Z

    assessment: ocean thermal energy conversion (OTEC) program;proposed Ocean Thermal Energy Conversion (OTEC) sites tooperation of Ocean Thermal Energy Conversion (OTEC) power

  18. COMMERCIAL FISHERY DATA FROM A PROPOSED OCEAN THERMAL ENERGY CONVERSION (OTEC) SITE IN PUERTO RICO

    E-Print Network [OSTI]

    Ryan, Constance J.

    2013-01-01T23:59:59.000Z

    at several proposed Ocean Thermal Energy Conversion (OTEC)Environmental assessment: ocean thermal energy conversion (The operation of Ocean Thermal Energy Conversion (OTEC)

  19. Plasmon-graviton conversion in a magnetic field in TeV-scale gravity

    E-Print Network [OSTI]

    E. Yu. Melkumova

    2011-12-13T23:59:59.000Z

    Kaluza-Klein (KK) gravitons emission rates due to plasmon-graviton conversion in magnetic field are computed within the ADD model of TeV-scale gravity. Plasma is described in the kinetic approach as the system of charged particles and Maxwell field both confined on the brane. Interaction with multidimensional gravity living in the bulk with $n$ compact extra dimensions is introduced within the linearized theory. Plasma collective effects enter through the two-point correlation function of the fluctuations of the energy-momentum tensor. The estimate for magnetic stars is presented leading to the lower limit of the D-dimensional Plank mass.

  20. Conversion and correction factors for historical measurements of Iodine-131 in Hanford-area vegetation, 1945--1947: Draft

    SciTech Connect (OSTI)

    Mart, E.I.; Denham, D.H.; Thiede, M.E.

    1993-05-01T23:59:59.000Z

    This report is a result of the Hanford Environmental Dose Reconstruction (HEDR) Project whose goal is to estimate the radiation dose that individuals could have received from emissions since 1944 at the US Department of Energy's (DOE) Hanford Site near Richland, Washington. The report describes in detail the reconstructed conversion and correction factors for historical measurements of iodine-131 in Hanford-area vegetation which was collected from the beginning of October 1945 through the end of December 1947.

  1. Future Sulfur Dioxide Emissions

    SciTech Connect (OSTI)

    Smith, Steven J.; Pitcher, Hugh M.; Wigley, Tom M.

    2005-12-01T23:59:59.000Z

    The importance of sulfur dioxide emissions for climate change is now established, although substantial uncertainties remain. This paper presents projections for future sulfur dioxide emissions using the MiniCAM integrated assessment model. A new income-based parameterization for future sulfur dioxide emissions controls is developed based on purchasing power parity (PPP) income estimates and historical trends related to the implementation of sulfur emissions limitations. This parameterization is then used to produce sulfur dioxide emissions trajectories for the set of scenarios developed for the Special Report on Emission Scenarios (SRES). We use the SRES methodology to produce harmonized SRES scenarios using the latest version of the MiniCAM model. The implications, and requirements, for IA modeling of sulfur dioxide emissions are discussed. We find that sulfur emissions eventually decline over the next century under a wide set of assumptions. These emission reductions result from a combination of emission controls, the adoption of advanced electric technologies, and a shift away from the direct end use of coal with increasing income levels. Only under a scenario where incomes in developing regions increase slowly do global emission levels remain at close to present levels over the next century. Under a climate policy that limits emissions of carbon dioxide, sulfur dioxide emissions fall in a relatively narrow range. In all cases, the relative climatic effect of sulfur dioxide emissions decreases dramatically to a point where sulfur dioxide is only a minor component of climate forcing by the end of the century. Ecological effects of sulfur dioxide, however, could be significant in some developing regions for many decades to come.

  2. Land-use implications of wind-energy-conversion systems

    SciTech Connect (OSTI)

    Noun, R.J.

    1981-02-01T23:59:59.000Z

    An estimated 20 utilities in the United States are now investigating potential wind machine sites in their areas. Identifying sites for wind machine clusters (wind farms) involves more than just finding a location with a suitable wind resource. Consideration must also be given to the proximity of sites to existing transmission lines, environmental impacts, aesthetics, and legal concerns as well as the availability of and alternative uses for the land. These issues have made it increasingly difficult for utilities to bring conventional power plants on-line quickly. Utilities are now required, however, to give careful consideration to specific legal, social, and environmental questions raised by the siting of wind energy conversion systems (WECS).

  3. Chemistry of Furan Conversion into Aromatics and Olefins over HZSM-5: A Model Biomass Conversion Reaction

    SciTech Connect (OSTI)

    Cheng, Yu-Ting [Univ. of Massachusetts, Amherst, MA (United States); Huber, George W. [Univ. of Massachusetts, Amherst, MA (United States)

    2011-06-03T23:59:59.000Z

    The conversion of furan (a model of cellulosic biomass) over HZSM-5 was investigated in a thermogravimetric analysis–mass spectrometry system, in situ Fourier transform infrared analysis, and in a continuous-flow fixed-bed reactor. Furan adsorbed as oligomers at room temperature with a 1.73 of adsorbed furan/Al ratio. These oligomers were polycyclic aromatic compounds that were converted to CO, CO?, aromatics, and olefins at temperatures from 400 to 600 °C. Aromatics (e.g., benzene, toluene, and naphthalene), oligomer isomers (e.g., benzofuran, 2,2-methylenebisfuran, and benzodioxane), and heavy oxygenates (C??{sub +} oligomers) were identified as intermediates formed inside HZSM-5 at different reaction temperatures. During furan conversion, graphite-type coke formed on the catalyst surface, which caused the aromatics and olefins formation to deactivate within the first 30 min of time on-stream. We have measured the effects of space velocity and temperature for furan conversion to help us understand the chemistry of biomass conversion inside zeolite catalysts. The major products for furan conversion included CO, CO?, allene, C?–C? olefins, benzene, toluene, styrene, benzofuran, indene, and naphthalene. The aromatics (benzene and toluene) and olefins (ethylene and propylene) selectivity decreased with increasing space velocity. Unsaturated hydrocarbons such as allene, cyclopentadiene, and aromatics selectivity increased with increasing space velocity. The product distribution was selective to olefins and CO at high temperatures (650 °C) but was selective to aromatics (benzene and toluene) at intermediate temperatures (450–600 °C). At low temperatures (450 °C), benzofuran and coke contributed 60% of the carbon selectivity. Several different reactions were occurring for furan conversion over zeolites. Some important reactions that we have identified in this study include Diels–Alder condensation (e.g., two furans form benzofuran and water), decarbonylation (e.g., furan forms CO and allene), oligomerization (allene forms olefins and aromatics plus hydrogen), and alkylation (e.g., furan plus olefins). The product distribution was far from thermodynamic equilibrium.

  4. Fabrication and testing of an infrared spectral control component for thermophotovoltaic power conversion applications

    E-Print Network [OSTI]

    O'Sullivan, Francis M. (Francis Martin), 1980-

    2004-01-01T23:59:59.000Z

    Thermophotovoltaic (TPV) power conversion is the direct conversion of thermal radiation to electricity. Conceptually, TPV power conversion is a very elegant means of energy conversion. A thermal source emits a radiative ...

  5. Spatial and spectral filtering of supercontinuum emission generated in microstructure fibres

    SciTech Connect (OSTI)

    Fedotov, Andrei B; Zheltikov, Aleksei M [Department of Physics, M.V. Lomonosov Moscow State University, Moscow (Russian Federation); Zhou, Ping; Tarasevitch, A P; Linde, D von der [Institut fur Laser- und Plasmaphysik, Universitat Essen, Essen (Germany); Kondrat'ev, Yu N; Shevandin, V S; Dukel'skii, K V; Khokhlov, A V [All-Russian Scientific Centre 'S.I. Vavilov State Optical Institute', St Petersburg (Russian Federation); Bagayev, S N [Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation); Smirnov, Valerii B [Russian Center of Laser Physics, St. Petersburg State University, St. Petersburg (Russian Federation)

    2002-09-30T23:59:59.000Z

    The mode structure of supercontinuum emission generated by femtosecond pulses of Ti:sapphire laser radiation in microstructure fibres is studied. The long-wavelength (720 - 900 nm) and visible (400 - 600 nm) parts of supercontinuum are shown to be emitted in spectrally separable isolated spatial modes. These spectrally sliced single modes of supercontinuum emission possess a high spatial quality, verified by efficient nonlinear-optical frequency conversion. (control of laser radiation parameters)

  6. Energy conversion device with improved seal

    DOE Patents [OSTI]

    Miller, Gerald R. (Salt Lake City, UT); Virkar, Anil V. (Midvale, UT)

    1980-01-01T23:59:59.000Z

    An energy conversion device comprising an improved sealing member adapted to seal a cation-permeable casing to the remainder of the device. The sealing member comprises a metal substrate which (i) bears a nonconductive and corrosion resistant coating on the major surface to which said casing is sealed, and (ii) is corrugated so as to render it flexible, thereby allowing said member to move relative to said casing without cracking the seal therebetween. Corrugations may be circumferential, radial, or both radial and circumferential so as to form dimples. The corrugated member may be in form of a bellows or in a substantially flat form, such as a disc.

  7. Carbon aerogel electrodes for direct energy conversion

    DOE Patents [OSTI]

    Mayer, Steven T. (San Leandro, CA); Kaschmitter, James L. (Pleasanton, CA); Pekala, Richard W. (Pleasant Hill, CA)

    1997-01-01T23:59:59.000Z

    A direct energy conversion device, such as a fuel cell, using carbon aerogel electrodes, wherein the carbon aerogel is loaded with a noble catalyst, such as platinum or rhodium and soaked with phosphoric acid, for example. A separator is located between the electrodes, which are placed in a cylinder having plate current collectors positioned adjacent the electrodes and connected to a power supply, and a pair of gas manifolds, containing hydrogen and oxygen positioned adjacent the current collectors. Due to the high surface area and excellent electrical conductivity of carbon aerogels, the problems relative to high polarization resistance of carbon composite electrodes conventionally used in fuel cells are overcome.

  8. Carbon aerogel electrodes for direct energy conversion

    DOE Patents [OSTI]

    Mayer, S.T.; Kaschmitter, J.L.; Pekala, R.W.

    1997-02-11T23:59:59.000Z

    A direct energy conversion device, such as a fuel cell, using carbon aerogel electrodes is described, wherein the carbon aerogel is loaded with a noble catalyst, such as platinum or rhodium and soaked with phosphoric acid, for example. A separator is located between the electrodes, which are placed in a cylinder having plate current collectors positioned adjacent the electrodes and connected to a power supply, and a pair of gas manifolds, containing hydrogen and oxygen positioned adjacent the current collectors. Due to the high surface area and excellent electrical conductivity of carbon aerogels, the problems relative to high polarization resistance of carbon composite electrodes conventionally used in fuel cells are overcome. 1 fig.

  9. NREL: Biomass Research - Biochemical Conversion Capabilities

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifNREL NREL RefinesAnalysisBiochemical Conversion

  10. NREL: Biomass Research - Thermochemical Conversion Capabilities

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifNREL NRELChemical and CatalystNewResearchConversion

  11. BETO Conversion Program | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The FutureComments fromof Energy Automationj.Conversion Program BETO

  12. Conversation with Paul Brown | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, clickInformationNew| Exploration Technique: ControlledConversation with Paul

  13. Atlantic Biomass Conversions 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomass Conversions Inc Jump to: navigation, search Name: Atlantic Biomass

  14. Alternative Fuels Data Center: Propane Vehicle Conversions

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP RelatedCellulaseFuelsConversions to someone by E-mail Share

  15. Alternative Fuels Data Center: Vehicle Conversions

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP RelatedCellulaseFuelsConversionsTelework to

  16. Field emission chemical sensor

    DOE Patents [OSTI]

    Panitz, J.A.

    1983-11-22T23:59:59.000Z

    A field emission chemical sensor for specific detection of a chemical entity in a sample includes a closed chamber enclosing two field emission electrode sets, each field emission electrode set comprising (a) an electron emitter electrode from which field emission electrons can be emitted when an effective voltage is connected to the electrode set; and (b) a collector electrode which will capture said electrons emitted from said emitter electrode. One of the electrode sets is passive to the chemical entity and the other is active thereto and has an active emitter electrode which will bind the chemical entity when contacted therewith.

  17. Modeling Traffic Flow Emissions

    E-Print Network [OSTI]

    Cappiello, Alessandra

    2002-09-17T23:59:59.000Z

    The main topic of this thesis is the development of light-duty vehicle dynamic emission models and their integration with dynamic traffic models. Combined, these models

  18. Saving Fuel, Reducing Emissions

    E-Print Network [OSTI]

    Kammen, Daniel M.; Arons, Samuel M.; Lemoine, Derek M.; Hummel, Holmes

    2009-01-01T23:59:59.000Z

    would in turn lower PHEV fuel costs and make them morestretches from fossil-fuel- powered conventional vehiclesbraking, as do Saving Fuel, Reducing Emissions Making Plug-

  19. Vehicle Emissions Review - 2011

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

    mass, membrane effects, fundamentals on permeability * DOC Pd:Pt ratios allow optimization * Gasoline emission control is amazing - Zone coating - Lower PGM with better...

  20. Advancing the Frontiers in Nanocatalysis, Biointerfaces, and Renewable Energy Conversion by Innovations of Surface Techniques

    E-Print Network [OSTI]

    Somorjai, G.A.

    2010-01-01T23:59:59.000Z

    Biointerfaces, and Renewable Energy Conversion bychemistry) and develop renewable energy based processes.biointerfaces, and renewable energy conversion chemistry. In

  1. Investigation of proton focusing and conversion efficiency for proton fast ignition

    E-Print Network [OSTI]

    Bartal, Teresa Jean

    2012-01-01T23:59:59.000Z

    2.2 Proton Acceleration . . . . . . . . . . . . . . . .plasma (LSP) simulations . . Proton Focusing and ConversionProton Focusing and Conversion Efficiency with Hemispherical

  2. Achieve maximum application availability and

    E-Print Network [OSTI]

    Bernstein, Phil

    Highlights Achieve maximum application availability and data protection using SQL Server AlwaysOn and other high availability features Reduce planned downtime significantly with SQL Server on Windows and management of high availability and disaster recovery using integrated tools Achieve maximum application

  3. Conversion of DAP models to SPEEDUP

    SciTech Connect (OSTI)

    Aull, J.E.

    1993-08-01T23:59:59.000Z

    Several processes at the Savannah River Site are modeled using Bechtel`s Dynamic Analysis Program (DAP) which uses a sequential modular modeling architecture. The feasibility of conversion of DAP models to SPEEDUP was examined because of the benefits associated with this de facto industry standard. The equation-based approach used in SPEEDUP gives accuracy, stability, and ease of maintenance. The DAP licenses on our site are for single-user PS/2 machines whereas the SPEEDUP product is licensed on a VAX minicomputer which provides faster execution and ease of integration with existing visualization tools. In this paper the basic unit operations of a DAP model that simulates a ventilation system are described. The basic operations were modeled with both DAP and SPEEDUP, and the two models yield results that are in close agreement. Since the basic unit operations of the DAP model have been successfully duplicated using SPEEDUP, it is feasible to proceed with model conversion. DAP subroutines and functions that involve only algebraic manipulation may be inserted directly into the SPEEDUP model or their underlying equations may be extracted and written as SPEEDUP model equations. A problem modeled in SPEEDUP running on a VAX 8810 runs approximately fifteen times faster in elapsed time than the same problem modeled with DAP on a 33 MHz Intel 80486 processor.

  4. Oriented Nanostructures for Energy Conversion and Storage

    SciTech Connect (OSTI)

    Liu, Jun; Cao, Guozhong H.; Yang, Zhenguo; Wang, Donghai; DuBois, Daniel L.; Zhou, Xiao Dong; Graff, Gordon L.; Pederson, Larry R.; Zhang, Jiguang

    2008-08-28T23:59:59.000Z

    Recently the role of nanostructured materials in addressing the challenges in energy and natural resources has attracted wide attention. In particular, oriented nanostructures have demonstrated promising properties for energy harvesting, conversion and storage. The purpose of the paper is to review the synthesis and application of oriented nanostructures in a few key areas of energy technologies, namely photovoltaics, batteries, supercapacitors and thermoelectrics. Although the applications differ from field to field, one of the fundamental challenges is to improve the generation and transport of electrons and ions. We will first briefly review the several major approaches to attain oriented nanostructured films that are applicable for energy applications. We will then discuss how such controlled nanostructures can be used in photovoltaics, batteries, capacitors, thermoelectrics, and other unconventional ways of energy conversion. We will highlight the role of high surface area to maximize the surface activity, and the importance of optimum dimension and architecture, controlled pore channels and alignment of the nanocrystalline phase to optimize the electrons and ion transport. Finally, the paper will discuss the challenges in attaining integrated architectures to achieve the desired performance. Brief background information will be provided for the relevant technologies, but the emphasis is focused mainly on the nanoeffects of mostly inorganic based materials and devices.

  5. Air Emission Inventory for the INEEL -- 1999 Emission Report

    SciTech Connect (OSTI)

    Zohner, Steven K

    2000-05-01T23:59:59.000Z

    This report presents the 1999 calendar year update of the Air Emission Inventory for the Idaho National Engineering and Environmental Laboratory (INEEL). The INEEL Air Emission Inventory documents sources and emissions of nonradionuclide pollutants from operations at the INEEL. The report describes the emission inventory process and all of the sources at the INEEL, and provides nonradionuclide emissions estimates for stationary sources.

  6. Resource Limits and Conversion Efficiency with Implications for Climate Change

    E-Print Network [OSTI]

    Croft, Gregory Donald

    2009-01-01T23:59:59.000Z

    BIBLIOGRAPHY Cumulative CO2 Emissions, Gt Figure 4.30: TheBIBLIOGRAPHY Cumulative CO2 Emissions, Gt Figure 4.34: Thequality. Cumulative CO2 Emissions, Gt Figure 4.38: Figure

  7. Graphene field emission devices

    SciTech Connect (OSTI)

    Kumar, S., E-mail: shishirk@gmail.com; Raghavan, S. [Centre for Nanoscience and Engineering, Indian Institute of Science, Bengaluru (India); Duesberg, G. S. [Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and School of Chemistry, Trinity College Dublin, Dublin, D2 (Ireland); Pratap, R. [Centre for Nanoscience and Engineering, Indian Institute of Science, Bengaluru (India); Department of Mechanical Engineering, Indian Institute of Science, Bengaluru (India)

    2014-09-08T23:59:59.000Z

    Graphene field emission devices are fabricated using a scalable process. The field enhancement factors, determined from the Fowler-Nordheim plots, are within few hundreds and match the theoretical predictions. The devices show high emission current density of ?10?nA ?m{sup ?1} at modest voltages of tens of volts. The emission is stable with time and repeatable over long term, whereas the noise in the emission current is comparable to that from individual carbon nanotubes emitting under similar conditions. We demonstrate a power law dependence of emission current on pressure which can be utilized for sensing. The excellent characteristics and relative ease of making the devices promise their great potential for sensing and electronic applications.

  8. Design of Heterostructures for High Efficiency Thermionic Emission Zhixi Bian and Ali Shakouri

    E-Print Network [OSTI]

    -state thermionic energy converters are expected to offer a larger thermoelectric power factor ( 2 S ) than uniformDesign of Heterostructures for High Efficiency Thermionic Emission Zhixi Bian and Ali Shakouri heterostructure designs to improve the energy conversion efficiency of solid- state thermionic devices. The first

  9. Reduction in Vehicle Idling Emissions Using RFID Parking Permits Dawson, Pakes-Ahlman, Graham, Gutierrez, Vilasdaechanont

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    1 Reduction in Vehicle Idling Emissions Using RFID Parking Permits 9/20/13 Dawson, Pakes Frequency Identification permits (RFID) allow drivers to remain in their vehicles without coming this conversion to RFID equates to shorter vehicle queues, lower idling time and, ultimately, lower fuel

  10. Modeling the Performance, Emissions, and Cost of an Entrained-Flow Gasification Combined Cycle System Using

    E-Print Network [OSTI]

    Frey, H. Christopher

    1 Modeling the Performance, Emissions, and Cost of an Entrained-Flow Gasification Combined Cycle Carolina State University ABSTRACT Gasification is a globally emerging technology in commercial markets for the conversion of a variety of feedstocks, including coal, heavy residue oil, biomass, solid waste, and others

  11. Enzymantic Conversion of Coal to Liquid Fuels

    SciTech Connect (OSTI)

    Richard Troiano

    2011-01-31T23:59:59.000Z

    The work in this project focused on the conversion of bituminous coal to liquid hydrocarbons. The major steps in this process include mechanical pretreatment, chemical pretreatment, and finally solubilization and conversion of coal to liquid hydrocarbons. Two different types of mechanical pretreatment were considered for the process: hammer mill grinding and jet mill grinding. After research and experimentation, it was decided to use jet mill grinding, which allows for coal to be ground down to particle sizes of 5 {mu}m or less. A Fluid Energy Model 0101 JET-O-MIZER-630 size reduction mill was purchased for this purpose. This machine was completed and final testing was performed on the machine at the Fluid Energy facilities in Telford, PA. The test results from the machine show that it can indeed perform to the required specifications and is able to grind coal down to a mean particle size that is ideal for experimentation. Solubilization and conversion experiments were performed on various pretreated coal samples using 3 different approaches: (1) enzymatic - using extracellular Laccase and Manganese Peroxidase (MnP), (2) chemical - using Ammonium Tartrate and Manganese Peroxidase, and (3) enzymatic - using the live organisms Phanerochaete chrysosporium. Spectral analysis was used to determine how effective each of these methods were in decomposing bituminous coal. After analysis of the results and other considerations, such as cost and environmental impacts, it was determined that the enzymatic approaches, as opposed to the chemical approaches using chelators, were more effective in decomposing coal. The results from the laccase/MnP experiments and Phanerochaete chrysosporium experiments are presented and compared in this final report. Spectra from both enzymatic methods show absorption peaks in the 240nm to 300nm region. These peaks correspond to aromatic intermediates formed when breaking down the coal structure. The peaks then decrease in absorbance over time, corresponding to the consumption of aromatic intermediates as they undergo ring cleavage. The results show that this process happens within 1 hour when using extracellular enzymes, but takes several days when using live organisms. In addition, live organisms require specific culture conditions, control of contaminants and fungicides in order to effectively produce extracellular enzymes that degrade coal. Therefore, when comparing the two enzymatic methods, results show that the process of using extracellular lignin degrading enzymes, such as laccase and manganese peroxidase, appears to be a more efficient method of decomposing bituminous coal.

  12. Proceedings of the Midwest Poultry Federation Convention, St. Paul, MN. March 16-18, 2004 Ammonia Emission from Iowa Layer Houses

    E-Print Network [OSTI]

    Kentucky, University of

    conversion as one of eight principles to reduce ammonia emission from layer hen houses. Research on reduction., Pittsburg, PA) for NH3 measurement and infrared sensor (0-5000 ± 20 ppm; Vaisala, Inc., Woburn, MA) for CO2 - Ammonia Emission from Iowa Layer Houses H. Xin1 , Y. Liang2 , R.S. Gates3 , E. F. Wheeler4 1 Professor

  13. Efficiency of light-frequency conversion in an atomic ensemble

    E-Print Network [OSTI]

    H. H. Jen; T. A. B. Kennedy

    2011-06-01T23:59:59.000Z

    The efficiency of frequency up and down conversion of light in an atomic ensemble, with a diamond level configuration, is analyzed theoretically. The conditions of pump field intensities and detunings required to maximize the conversion as a function of optical thickness of the ensemble are determined. The influence of the probe pulse duration on the conversion efficiency is investigated by numeric solution of the Maxwell-Bloch equations.

  14. April 2013 Most Viewed Documents for Energy Storage, Conversion...

    Office of Scientific and Technical Information (OSTI)

    for Energy Storage, Conversion, And Utilization Science Subject Feed Seventh Edition Fuel Cell Handbook NETL (2004) 628 > Continuously variable transmissions: theory and...

  15. University Reactor Conversion Lessons Learned Workshop for Purdue University Reactor

    SciTech Connect (OSTI)

    Eric C. Woolstenhulme; Dana M. Hewit

    2008-09-01T23:59:59.000Z

    The Department of Energy’s Idaho National Laboratory, under its programmatic responsibility for managing the University Research Reactor Conversions, has completed the conversion of the reactor at Purdue University Reactor. With this work completed and in anticipation of other impending conversion projects, the INL convened and engaged the project participants in a structured discussion to capture the lessons learned. The lessons learned process has allowed us to capture gaps, opportunities, and good practices, drawing from the project team’s experiences. These lessons will be used to raise the standard of excellence, effectiveness, and efficiency in all future conversion projects.

  16. Most Viewed Documents - Energy Storage, Conversion, and Utilization...

    Office of Scientific and Technical Information (OSTI)

    - Energy Storage, Conversion, and Utilization Process Equipment Cost Estimation, Final Report H.P. Loh; Jennifer Lyons; Charles W. White, III (2002) Continuously variable...

  17. Biological Conversion of Sugars to Hydrocarbons Technology Pathway

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

    case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with...

  18. Novel Energy Conversion Equipment for Low Temperature Geothermal...

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

    More Documents & Publications Novel Energy Conversion Equipment for Low Temperatures Geothermal Resources City of Eagan Civic Ice Arena Renovation Hybrid and Advanced Air Cooling...

  19. Novel Energy Conversion Equipment for Low Temperatures Geothermal...

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

    Novel Energy Conversion Equipment for Low Temperature Geothermal Resources City of Eagan Civic Ice Arena Renovation Canby Cascaded Geothermal Project Phase 1 Feasibility...

  20. OCEAN THERMAL ENERGY CONVERSION (OTEC) PROGRAMMATIC ENVIRONMENTAL ANALYSIS

    E-Print Network [OSTI]

    Sands, M. D.

    2011-01-01T23:59:59.000Z

    Assessment. 1978. Renewable ocean energy sources, Part I.on aquaculture and ocean energy systems for the county of310, the Ocean the Ocean Energy Thermal Energy Conversion

  1. OCEAN THERMAL ENERGY CONVERSION: AN OVERALL ENVIRONMENTAL ASSESSMENT

    E-Print Network [OSTI]

    Sands, M.Dale

    2013-01-01T23:59:59.000Z

    Presented at the 7th Ocean Energy Conference, Washington,Power Applications, Division of Ocean Energy Systems, UnitedM.D. (editor). 1980. Ocean Thermal Energy Conversion Draft

  2. DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    1 environmental Seventh Ocean Energy Michel, H. B. , and M.of the Seventh Ocean Energy Conference, Washington, DC.1979. Commercial ocean thermal energy conversion ( OTEC)

  3. Process Design and Economics for Biochemical Conversion of Lignocellul...

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

    Process Design and Economics for Biochemical Conversion of Lignocellulosic Biomass to Ethanol: Dilute-Acid Pretreatment and Enzymatic Hydrolysis of Corn Stover Process Design and...

  4. CHEMICAL TRAPPING OF A PRIMARY QUANTUM CONVERSION PRODUCT IN PHOTOSYNTHESIS

    E-Print Network [OSTI]

    Corker, Gerald A.; Klein, Melvin P.; Calvin, Melvin.

    2008-01-01T23:59:59.000Z

    CONVERSION PRODUCT I N PHOTOSYNTHESIS G e r a l d A. C o r kthe two light acts of photosynthesis. Potassium Ecrricyanide

  5. Steam and Condensate System Optimization in Converse College, Spartanburg, SC

    E-Print Network [OSTI]

    Cruz, A.; Iordanova, N.; Stevenson, S.

    2007-01-01T23:59:59.000Z

    STEAM AND CONDENSATE SYSTEM OPTIMIZATION IN CONVERSE COLLEGE, SPARTANBURG, SC Alberto Cruz, CEM Nevena Iordanova, CEM Susan Stevenson Energy Systems Engineer Director of Engineering Services VP for Finance...

  6. Conversion Technologies II: Bio-Oils, Sugar Intermediates, Precursors...

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

    Technologies II: Bio-Oils, Sugar Intermediates, Precursors, Distributed Models, and Refinery Co-Processing July 30, 2014 Bryna Berendzen Technology Manager BETO Conversion...

  7. Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion...

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

    Nanostructured High-Temperature Bulk Thermoelectric Energy Conversion for Efficient Automotive Waste Heat Recovery Vehicle Technologies Office Merit Review 2014: Nanostructured...

  8. Biological Conversion of Sugars to Hydrocarbons Technology Pathway...

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

    for the pathway to become competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks. Biological Conversion of Sugars to Hydrocarbons...

  9. U-058: Apache Struts Conversion Error OGNL Expression Injection...

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

    A vulnerability was reported in Apache Struts. A remote user can execute arbitrary commands on the target system. PLATFORM: Apache Struts 2.x ABSTRACT: Apache Struts Conversion...

  10. Bioenergy Technologies Office Conversion R&D Pathway: Whole Algae...

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

    Whole Algae Hydrothermal Liquefaction Bioenergy Technologies Office Conversion R&D Pathway: Whole Algae Hydrothermal Liquefaction Whole algae hydrothermal liquefaction is one of...

  11. 1 Conversational Agents 1 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

    E-Print Network [OSTI]

    Lester, James C.

    Contents 1 Conversational Agents 1 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 Technical Challenges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3.1 Natural

  12. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    Maryland. merit08schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Efficiency Improvement in an...

  13. Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable...

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

    Exhaust Gas Waste Heat into Usable Electricity Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable Electricity Presents successful incorporation of one of the most...

  14. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    2006deerschock.pdf More Documents & Publications Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle Development of Thermoelectric...

  15. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    by the Application of Advanced Thermoelectric Systems Implemented in a Hybrid Configuration Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

  16. Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading...

    Office of Environmental Management (EM)

    Oil Upgrading Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading PNNL report-out at the CTAB webinar on Bio-Oil Upgrading. ctabwebinarbiooilsupgrading.pdf More...

  17. Conversion Technologies for Advanced Biofuels - Bio-Oil Production...

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

    International report-out at the CTAB webinar on Conversion Technologies for Advanced Biofuels - Bio-Oil Production. ctabwebinarbiooilsproduction.pdf More Documents &...

  18. Bioenergy Technologies Office Conversion R&D Pathway: Syngas...

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

    Syngas Upgrading to Hydrocarbon Fuels Bioenergy Technologies Office Conversion R&D Pathway: Syngas Upgrading to Hydrocarbon Fuels Syngas upgrading to hydrocarbon fuels is one of...

  19. EIS-0359: Uranium Hexafluoride Conversion Facility at the Paducah...

    Energy Savers [EERE]

    operation, maintenance, and decontamination and decommissioning of the proposed depleted uranium hexafluoride (DUF6) conversion facility at three locations within the...

  20. DOE Selects Contractor for Depleted Hexafluoride Conversion Project...

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

    to the DOE Portsmouth Paducah Project Office (PPPO) in Lexington, Kentucky and the Depleted Uranium Hexafluoride (DUF6) Conversion Project in Paducah, Kentucky and...

  1. AWARD FEE PLAN FOR Babcock and Wilcox Conversion Services, LLC

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

    Services, LLC Second Period -October 1, 2012 through September 30, 2013 Operations of Depleted Uranium Hexafluoride (DUF 6 ) Conversion Facilities at Paducah, Kentucky and...

  2. CONVERSION OF DOE TECHNICAL STANDARDS TO NON-GOVERNMENT STANDARDS

    Broader source: Energy.gov [DOE]

    PurposeThis procedure provides guidance on the conversion of DOE Technical Standards to Voluntary Consensus Standards (VCSs), also referred to as non-Government standards. 

  3. Conversations and Connections - The Expertise of our Small Business...

    Office of Environmental Management (EM)

    business owners like Goff find their niche in the government contracting world. "It's a win-win situation to connect someone to someone else," Hopper says. "These conversations...

  4. Sandia National Laboratories: very high solar energy conversion...

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

    very high solar energy conversion efficiency ECIS-Princeton Power Systems, Inc.: Demand Response Inverter On March 19, 2013, in DETL, Distribution Grid Integration, Energy, Energy...

  5. Metallurgical technologies, energy conversion, and magnetohydrodynamic flows

    SciTech Connect (OSTI)

    Branover, H.; Unger, Y.

    1993-01-01T23:59:59.000Z

    The present volume discusses metallurgical applications of MHD, R D on MHD devices employing liquid working medium for process applications, electromagnetic (EM) modulation of molten metal flow, EM pump performance of superconducting MHD devices, induction EM alkali-metal pumps, a physical model for EM-driven flow in channel-induction furnaces, grain refinement in Al alloys via EM vibrational method, dendrite growth of solidifying metal in dc magnetic field, MHD for mass and heat transfer in single-crystal melt growth, inverse EM shaping, and liquid-metal MHD development in Israel. Also discussed are the embrittlement of steel by lead, an open cycle MHD disk generator, the acceleration of gas-liquid piston flows for molten-metal MHD generators, MHD flow around a cylinder, new MHD drag coefficients, liquid-metal MHD two-phase flow, and two-phase liquid gas mixers for MHD energy conversion.

  6. Overview of the energy conversion program

    SciTech Connect (OSTI)

    LaSala, R.

    1996-04-10T23:59:59.000Z

    I wish we had time to cover all of the DOE-sponsored energy conversion and materials projects in detail, but we don`t. Instead, let me take a few minutes to bring you up to date on several items that will not be discussed elsewhere in this session. First, we still have a cooperative Agreement with Energy, Inc. to demonstrate a 12.4 MW Kalina cycle power plant at Steamboat, Nevada; but the project remains stalled by the lack of a power purchase agreement, a problem that I am sure many of you can appreciate. I hope we can get this project back on track by the time of the next annual meeting of the Geothermal Resources Council in late September.

  7. OCEAN THERMAL ENERGY CONVERSION PROGRAMMATIC ENVIRONMENTAL ASSESSMENT

    SciTech Connect (OSTI)

    Sands, M.Dale

    1980-08-01T23:59:59.000Z

    Significant achievements in Ocean Thermal Energy Conversion (OTEC) technology have increased the probability of producing OTEC-derived power in this decade with subsequent large-scale commercialization to follow by the turn of the century. Under U.S. Department of Energy funding, Interstate Electronics has prepared an OTEC Programmatic Environmental Assessment (EA) that considers tne development, demonstration, and commercialization of OTEC power systems. The EA considers several tecnnological designs (open cycle and closed cycle), plant configurations (land-based, moored, and plantship), and power usages (baseload electricity and production of ammonia and aluminum). Potencial environmental impacts, health and safety issues, and a status update of international, federal, and state plans and policies, as they may influence OTEC deployments, are included.

  8. Spontaneous Emission Rate Enhancement Using Optical Antennas

    E-Print Network [OSTI]

    Kumar, Nikhil

    2013-01-01T23:59:59.000Z

    of  Spontaneous  Emission  in  a  Semiconductor  nanoLED,”  emission  rate  enhancement  using  the  Fluorescent  Emission  by  Lattice   Resonances  in  

  9. EMISSION AND TRANSMISSION NOISE PROPAGATION IN POSITRON EMISSION COMPUTED TOMOGRAPHY

    E-Print Network [OSTI]

    Gullberg, G.T.

    2010-01-01T23:59:59.000Z

    High Resolution Computed Tomography of Positron Emitters,"of Dynamic Emission Computed Tomography," J. Nucl. Med. ~:IN POSITRON EMISSION COMPUTED TOMOGRAPHY RECEIVED lAWRENCE

  10. Mercury emissions from municipal solid waste combustors

    SciTech Connect (OSTI)

    Not Available

    1993-05-01T23:59:59.000Z

    This report examines emissions of mercury (Hg) from municipal solid waste (MSW) combustion in the United States (US). It is projected that total annual nationwide MSW combustor emissions of mercury could decrease from about 97 tonnes (1989 baseline uncontrolled emissions) to less than about 4 tonnes in the year 2000. This represents approximately a 95 percent reduction in the amount of mercury emitted from combusted MSW compared to the 1989 mercury emissions baseline. The likelihood that routinely achievable mercury emissions removal efficiencies of about 80 percent or more can be assured; it is estimated that MSW combustors in the US could prove to be a comparatively minor source of mercury emissions after about 1995. This forecast assumes that diligent measures to control mercury emissions, such as via use of supplemental control technologies (e.g., carbon adsorption), are generally employed at that time. However, no present consensus was found that such emissions control measures can be implemented industry-wide in the US within this time frame. Although the availability of technology is apparently not a limiting factor, practical implementation of necessary control technology may be limited by administrative constraints and other considerations (e.g., planning, budgeting, regulatory compliance requirements, etc.). These projections assume that: (a) about 80 percent mercury emissions reduction control efficiency is achieved with air pollution control equipment likely to be employed by that time; (b) most cylinder-shaped mercury-zinc (CSMZ) batteries used in hospital applications can be prevented from being disposed into the MSW stream or are replaced with alternative batteries that do not contain mercury; and (c) either the amount of mercury used in fluorescent lamps is decreased to an industry-wide average of about 27 milligrams of mercury per lamp or extensive diversion from the MSW stream of fluorescent lamps that contain mercury is accomplished.

  11. Methane emissions from MBT landfills

    SciTech Connect (OSTI)

    Heyer, K.-U., E-mail: heyer@ifas-hamburg.de; Hupe, K.; Stegmann, R.

    2013-09-15T23:59:59.000Z

    Highlights: • Compilation of methane generation potential of mechanical biological treated (MBT) municipal solid waste. • Impacts and kinetics of landfill gas production of MBT landfills, approach with differentiated half-lives. • Methane oxidation in the waste itself and in soil covers. • Estimation of methane emissions from MBT landfills in Germany. - Abstract: Within the scope of an investigation for the German Federal Environment Agency (“Umweltbundesamt”), the basics for the estimation of the methane emissions from the landfilling of mechanically and biologically treated waste (MBT) were developed. For this purpose, topical research including monitoring results regarding the gas balance at MBT landfills was evaluated. For waste treated to the required German standards, a methane formation potential of approximately 18–24 m{sup 3} CH{sub 4}/t of total dry solids may be expected. Monitoring results from MBT landfills show that a three-phase model with differentiated half-lives describes the degradation kinetics in the best way. This is due to the fact that during the first years of disposal, the anaerobic degradation processes still proceed relatively intensively. In addition in the long term (decades), a residual gas production at a low level is still to be expected. Most of the soils used in recultivation layer systems at German landfills show a relatively high methane oxidation capacity up to 5 l CH{sub 4}/(m{sup 2} h). However, measurements at MBT disposal sites indicate that the majority of the landfill gas (in particular at non-covered areas), leaves the landfill body via preferred gas emission zones (hot spots) without significant methane oxidation. Therefore, rather low methane oxidation factors are recommended for open and temporarily covered MBT landfills. Higher methane oxidation rates can be achieved when the soil/recultivation layer is adequately designed and operated. Based on the elaborated default values, the First Order Decay (FOD) model of the IPCC Guidelines for National Greenhouse Gas Inventories, 2006, was used to estimate the methane emissions from MBT landfills. Due to the calculation made by the authors emissions in the range of 60,000–135,000 t CO{sub 2-eq.}/a for all German MBT landfills can be expected. This wide range shows the uncertainties when the here used procedure and the limited available data are applied. It is therefore necessary to generate more data in the future in order to calculate more precise methane emission rates from MBT landfills. This is important for the overall calculation of the climate gas production in Germany which is required once a year by the German Government.

  12. Contraction & Convergence: UK carbon emissions and the

    E-Print Network [OSTI]

    Watson, Andrew

    the EU's emissions trading scheme will do little to mitigate carbon emissions 4) Aviation growth must emissions. Keywords Contraction & Convergence; aviation; emissions trading; passengers; carbon dioxide #12

  13. Electron cyclotron emission spectrometry on the Tokamak a Configuration Variable

    SciTech Connect (OSTI)

    Klimanov, I.; Porte, L.; Alberti, S.; Blanchard, P.; Fasoli, A.; Goodman, T.P. [Centre de Recherches en Physique des Plasmas (CRPP), Association EURATOM-Confederation Suisse, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015, Lausanne (Switzerland)

    2005-09-15T23:59:59.000Z

    Electron cyclotron emission (ECE) measurements are an important component of the diagnostic suite on the Tokamak a Configuration Variable (TCV) [F. Hoffman et al., Plasma Phys. Controlled Fusion 36, B277 (1994)]. A recently installed, 24-channel dual-conversion heterodyne radiometer covering the radio frequency range 65-100 GHz and viewing from the low-field side (LFS) of the tokamak greatly enhances the system and, in combination with an existing radiometer viewing from the high-field side (HFS), allows simultaneous measurements of emission from the HFS and LFS. In addition, the new radiometer has multiple lines of sight that can receive the emission perpendicular to the toroidal magnetic field as well as with a finite k{sub parallel} (wave vector parallel to magnetic field). Such flexibility allows the LFS radiometer to make standard measurements of thermal emission and nonstandard measurements of nonthermal, anisotropic emission. The toroidal line of sight allows access to overdense plasma via mode converted emission. The enhanced ECE diagnostic is described and examples of measurements made in various configurations are presented.

  14. Lattice location of implanted $^{147}$Nd and $^{147*}$Pm in GaN using emission channeling

    E-Print Network [OSTI]

    De Vries, B; Vantomme, A; Correia, J G

    2003-01-01T23:59:59.000Z

    The lattice location of $^{147}$Nd and $^{147^{*}}$Pm in thin-film, single-crystalline hexagonal GaN was studied by means of the emission channeling technique. The angular emission yields of $\\beta^{-}$-particles and conversion electrons emitted by the radioactive isotopes $^{147}$Nd and $^{147^{*}}$Pm were measured using a position-sensitive detector following 60 keV room temperature implantation at a dose of 1 $\\times 10^{13}$ cm$^{-2}$ and annealing at 900°C. The emission patterns around the [0001], [1102], [1101], and [2113] crystal axes give direct evidence that the majority (70%) of Nd and Pm atoms occupy substitutional Ga sites.

  15. Note: Enhancement of the extreme ultraviolet emission from a potassium plasma by dual laser irradiation

    SciTech Connect (OSTI)

    Higashiguchi, Takeshi, E-mail: higashi@cc.utsunomiya-u.ac.jp; Yamaguchi, Mami; Otsuka, Takamitsu; Nagata, Takeshi [Department of Advanced Interdisciplinary Sciences and Center for Optical Research (CORE), Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 Japan (Japan); Ohashi, Hayato [Graduate School of Science and Engineering for Research, University of Toyama, Toyama, Toyama 930-8555 (Japan); Li, Bowen [School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000 (China); School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland); D’Arcy, Rebekah; Dunne, Padraig; O’Sullivan, Gerry [School of Physics, University College Dublin, Belfield, Dublin 4 (Ireland)

    2014-09-15T23:59:59.000Z

    Emission spectra from multiply charged potassium ions ranging from K{sup 3+} to K{sup 5+} have been obtained in the extreme ultraviolet (EUV) spectral region. A strong emission feature peaking around 38?nm, corresponding to a photon energy of 32.6 eV, is the dominant spectral feature at time-averaged electron temperatures in the range of 8?12 eV. The variation of this emission with laser intensity and the effects of pre-pulses on the relative conversion efficiency (CE) have been explored experimentally and indicate that an enhancement of about 30% in EUV CE is readily attainable.

  16. Emission Abatement System

    DOE Patents [OSTI]

    Bromberg, Leslie (Sharon, MA); Cohn, Daniel R. (Chestnut Hill, MA); Rabinovich, Alexander (Swampscott, MA)

    2003-05-13T23:59:59.000Z

    Emission abatement system. The system includes a source of emissions and a catalyst for receiving the emissions. Suitable catalysts are absorber catalysts and selective catalytic reduction catalysts. A plasma fuel converter generates a reducing gas from a fuel source and is connected to deliver the reducing gas into contact with the absorber catalyst for regenerating the catalyst. A preferred reducing gas is a hydrogen rich gas and a preferred plasma fuel converter is a plasmatron. It is also preferred that the absorber catalyst be adapted for absorbing NO.sub.x.

  17. Survey and conceptual flow sheets for coal conversion plant handling-preparation and ash/slag removal operations

    SciTech Connect (OSTI)

    Zapp, F.C.; Thomas, O.W.; Silverman, M.D.; Dyslin, D.A.; Holmes, J.M.

    1980-03-01T23:59:59.000Z

    This study was undertaken at the request of the Fossil Fuel Processing Division of the Department of Energy. The report includes a compilation of conceptual flow sheets, including major equipment lists, and the results of an availability survey of potential suppliers of equipment associated with the coal and ash/slag operations that will be required by future large coal conversion plant complexes. Conversion plant flow sheet operations and related equipment requirements were based on two representative bituminous coals - Pittsburgh and Kentucky No. 9 - and on nine coal conversion processes. It appears that almost all coal handling and preparation and ash/slag removal equipment covered by this survey, with the exception of some coal comminution equipment, either is on hand or can readily be fabricated to meet coal conversion plant capacity requirements of up to 50,000 short tons per day. Equipment capable of handling even larger capacities can be developed. This approach appears to be unjustified, however, because in many cases a reasonable or optimum number of trains of equipment must be considered when designing a conversion plant complex. The actual number of trains of equipment selected will be influenced by the total requied capacity of the complex, the minimum on-line capacity that can be tolerated in case of equipment failure, reliability of specific equipment types, and the number of reactors and related feed injection stations needed for the specific conversion process.

  18. Conversion Tower for Dispatchable Solar Power: High-Efficiency Solar-Electric Conversion Power Tower

    SciTech Connect (OSTI)

    None

    2012-01-11T23:59:59.000Z

    HEATS Project: Abengoa Solar is developing a high-efficiency solar-electric conversion tower to enable low-cost, fully dispatchable solar energy generation. Abengoa’s conversion tower utilizes new system architecture and a two-phase thermal energy storage media with an efficient supercritical carbon dioxide (CO2) power cycle. The company is using a high-temperature heat-transfer fluid with a phase change in between its hot and cold operating temperature. The fluid serves as a heat storage material and is cheaper and more efficient than conventional heat-storage materials, like molten salt. It also allows the use of a high heat flux solar receiver, advanced high thermal energy density storage, and more efficient power cycles.

  19. Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    DOE Patents [OSTI]

    Dziendziel, Randolph J. (Middle Grove, NY); DePoy, David Moore (Clifton Park, NY); Baldasaro, Paul Francis (Clifton Park, NY)

    2007-01-23T23:59:59.000Z

    This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.

  20. Tandem filters using frequency selective surfaces for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    DOE Patents [OSTI]

    Dziendziel, Randolph J. (Middle Grove, NY); Baldasaro, Paul F. (Clifton Park, NY); DePoy, David M. (Clifton Park, NY)

    2010-09-07T23:59:59.000Z

    This invention relates to the field of thermophotovoltaic (TPV) direct energy conversion. In particular, TPV systems use filters to minimize parasitic absorption of below bandgap energy. This invention constitutes a novel combination of front surface filters to increase TPV conversion efficiency by reflecting useless below bandgap energy while transmitting a very high percentage of the useful above bandgap energy. In particular, a frequency selective surface is used in combination with an interference filter. The frequency selective surface provides high transmission of above bandgap energy and high reflection of long wavelength below bandgap energy. The interference filter maintains high transmission of above bandgap energy and provides high reflection of short wavelength below bandgap energy and a sharp transition from high transmission to high reflection.

  1. Emission Standards for Contaminants (Iowa)

    Broader source: Energy.gov [DOE]

    These regulations list emissions standards for various contaminants, and contain special requirements for anaerobic lagoons. These regulations also describe alternative emissions limits, which may...

  2. Current Research on Thermochemical Conversion of Biomass at the National Renewable Energy Laboratory

    SciTech Connect (OSTI)

    Baldwin, R. M.; Magrini-Bair, K. A.; Nimlos, M. R.; Pepiot, P.; Donohoe, B. S.; Hensley, J. E.; Phillips, S. D.

    2012-04-05T23:59:59.000Z

    The thermochemical research platform at the National Bioenergy Center, National Renewable Energy Laboratory (NREL) is primarily focused on conversion of biomass to transportation fuels using non-biological techniques. Research is conducted in three general areas relating to fuels synthesis via thermochemical conversion by gasification: (1) Biomass gasification fundamentals, chemistry and mechanisms of tar formation; (2) Catalytic tar reforming and syngas cleaning; and (3) Syngas conversion to mixed alcohols. In addition, the platform supports activities in both technoeconomic analysis (TEA) and life cycle assessment (LCA) of thermochemical conversion processes. Results from the TEA and LCA are used to inform and guide laboratory research for alternative biomass-to-fuels strategies. Detailed process models are developed using the best available material and energy balance information and unit operations models created at NREL and elsewhere. These models are used to identify cost drivers which then form the basis for research programs aimed at reducing costs and improving process efficiency while maintaining sustainability and an overall net reduction in greenhouse gases.

  3. Costs to reduce sulfur dioxide emissions

    SciTech Connect (OSTI)

    None

    1982-03-01T23:59:59.000Z

    Central to the resolution of the acid rain issue are debates about the costs and benefits of controlling man-made emissions of chemicals that may cause acid rain. In this briefing, the position of those who are calling for immediate action and implicating coal-fired powerplants as the cause of the problem is examined. The costs of controlling sulfur dioxide emissions using alternative control methods available today are presented. No attempt is made to calculate the benefits of reducing these emissions since insufficient information is available to provide even a rough estimate. Information is presented in two steps. First, costs are presented as obtained through straightforward calculations based upon simplifying but realistic assumptions. Next, the costs of sulfur dioxide control obtained through several large-scale analyses are presented, and these results are compared with those obtained through the first method.

  4. Greenhouse Gas Emissions (Minnesota)

    Broader source: Energy.gov [DOE]

    This statute sets goals for the reduction of statewide greenhouse gas emissions by at least 15 percent by 2015, 30 percent by 2025, and 80 percent by 2050, calculated relative to 2005 levels. These...

  5. Light trapping for emission from a photovoltaic cell under normally incident monochromatic illumination

    SciTech Connect (OSTI)

    Takeda, Yasuhiko, E-mail: takeda@mosk.tytlabs.co.jp; Iizuka, Hideo; Mizuno, Shintaro; Hasegawa, Kazuo; Ichikawa, Tadashi; Ito, Hiroshi; Kajino, Tsutomu [Toyota Central Research and Development Laboratories, Inc., 41-1, Yokomichi, Nagakute, Aichi 480-1192 (Japan); Ichiki, Akihisa; Motohiro, Tomoyoshi [Green Mobility Collaborative Research Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601 (Japan)

    2014-09-28T23:59:59.000Z

    We have theoretically demonstrated a new light-trapping mechanism to reduce emission from a photovoltaic (PV) cell used for a monochromatic light source, which improves limiting conversion efficiency determined by the detailed balance. A multilayered bandpass filter formed on the surface of a PV cell has been found to prevent the light generated inside by radiative recombination from escaping the cell, resulting in a remarkable decrease of the effective solid angle for the emission. We have clarified a guide to design a suitable configuration of the bandpass filter and achieved significant reduction of the emission. The resultant gain in monochromatic conversion efficiency in the radiative limit due to the optimally designed 18-layerd bandpass filters is as high as 6% under normally incident 1064?nm illumination of 10 mW/cm{sup 2?}??1?kW/cm{sup 2}, compared with the efficiency for the perfect anti-reflection treatment to the surface of a conventional solar cell.

  6. Understanding the Interaction between Interests, Conversations and Friendships in Facebook

    E-Print Network [OSTI]

    Understanding the Interaction between Interests, Conversations and Friendships in Facebook Qirong the Interaction between Interests, Conversations and Friendships in Facebook Qirong Ho Rong Yan Rajat Raina Eric P 15213 Facebook, 10 Hacker Way, Menlo Park CA 94025 Abstract In this paper, we explore salient questions

  7. On Transforming Spectral Peaks in Voice Conversion Elizabeth Godoy 1

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On Transforming Spectral Peaks in Voice Conversion Elizabeth Godoy 1 , Olivier Rosec1 , Thierry.chonavel@telecom-bretagne.eu Abstract This paper explores the benefits of transforming spectral peaks in voice conversion. First, in examining classic GMM- based transformation with cepstral coefficients, we show that the lack of transformed

  8. advanced energy conversion: Topics by E-print Network

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

    energy conversion First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Energy Conversion Advanced Heat...

  9. Commercial considerations in conversion and UF{sub 6} transactions

    SciTech Connect (OSTI)

    NONE

    1994-02-01T23:59:59.000Z

    This article addresses various commercial considerations that result from the conversion of U3O8 into UF6 and the associated physical characteristics of natural UF6. Handling, transport, conversion, and enrichment of UF6 are discussed. Avenues of acquisition, including nation of origin, are also noted.

  10. Jet conversions in a quark-gluon plasma

    E-Print Network [OSTI]

    Liu, W.; Ko, Che Ming; Zhang, B. W.

    2007-01-01T23:59:59.000Z

    Quark and gluon jets traversing through a quark-gluon plasma not only lose their energies but also can undergo flavor conversions. The conversion rates via the elastic q((q) over bar )g -> gq((q) over bar )and the inelastic q (q) over bar gg...

  11. Microfluidic Glycosyl Hydrolase Screening for Biomass-to-Biofuel Conversion

    E-Print Network [OSTI]

    Singh, Anup

    Microfluidic Glycosyl Hydrolase Screening for Biomass-to-Biofuel Conversion Rajiv Bharadwaj such as cellulases and hemicellulases is a limiting and costly step in the conversion of biomass to biofuels. Lignocellulosic (LC) biomass is an abundant and potentially carbon-neutral resource for production of biofuels

  12. The Benefits of Planar Magnetics in OF Power Conversion

    E-Print Network [OSTI]

    is increased, are related to the magnetic components: transformers and inductors. Unless the copper and coreThe Benefits of Planar Magnetics in OF Power Conversion Planar Magnetics (PM): The Technology that Meets the Challenges of HF Switch and Resonant Mode Power Conversion Professor Sam Ben-Yaakov Department

  13. Direct-Write Piezoelectric Polymeric Nanogenerator with High Energy Conversion

    E-Print Network [OSTI]

    Lin, Liwei

    Direct-Write Piezoelectric Polymeric Nanogenerator with High Energy Conversion Efficiency Chieh conversion efficiency. Here, we report direct-write, piezoelectric polymeric nanogenerators based on organic to direct-write poly(vinylidene fluoride) (PVDF) nanofibers with in situ mechanical stretch and electrical

  14. Assured Fuel Supply: Potential Conversion and Fabrication Bottlenecks

    E-Print Network [OSTI]

    Assured Fuel Supply: Potential Conversion and Fabrication Bottlenecks PNNL-16951 DRAFT Authors bottlenecks that may arise in the conversion and fuel fabrication steps when used in conjunction with the U.S.-sponsored Reliable Fuel Supply (RFS) reserve. Paper is also intended to identify pathways for assessing the magnitude

  15. Electroluminescent apparatus having a structured luminescence conversion layer

    DOE Patents [OSTI]

    Krummacher, Benjamin Claus (Sunnyvale, CA)

    2008-09-02T23:59:59.000Z

    An apparatus such as a light source is disclosed which has an OLED device and a structured luminescence conversion layer disposed on the substrate or transparent electrode of said OLED device and on the exterior of said OLED device. The structured luminescence conversion layer contains color-changing and non-color-changing regions arranged in a particular pattern.

  16. A converse Lyapunov theorem for asymptotic stability in probability

    E-Print Network [OSTI]

    Hespanha, João Pedro

    1 A converse Lyapunov theorem for asymptotic stability in probability A.R. Teel, J.P. Hespanha, A. Subbaraman Abstract A converse Lyapunov theorem is established for discrete-time stochastic systems with non implies the existence of a continuous Lyapunov function, smooth outside of the attractor, that decreases

  17. WHEELS: A CONVERSATIONAL SYSTEM IN THE AUTOMOBILE CLASSIFIEDS DOMAIN

    E-Print Network [OSTI]

    WHEELS: A CONVERSATIONAL SYSTEM IN THE AUTOMOBILE CLASSIFIEDS DOMAIN Helen Meng, Senis WHEELS is a conversational system which provides access to a database of eletronic automobile classified users to search through a database of 5,000 automobile classifieds. The current end-to-end system can re

  18. Field emission electron source

    DOE Patents [OSTI]

    Zettl, Alexander Karlwalter (Kensington, CA); Cohen, Marvin Lou (Berkeley, CA)

    2000-01-01T23:59:59.000Z

    A novel field emitter material, field emission electron source, and commercially feasible fabrication method is described. The inventive field emission electron source produces reliable electron currents of up to 400 mA/cm.sup.2 at 200 volts. The emitter is robust and the current it produces is not sensitive to variability of vacuum or the distance between the emitter tip and the cathode. The novel emitter has a sharp turn-on near 100 volts.

  19. Emissions of greenhouse gases in the United States 1995

    SciTech Connect (OSTI)

    NONE

    1996-10-01T23:59:59.000Z

    This is the fourth Energy Information Administration (EIA) annual report on US emissions of greenhouse gases. This report presents estimates of US anthropogenic (human-caused) emissions of carbon dioxide, methane, nitrous oxide, and several other greenhouse gases for 1988 through 1994. Estimates of 1995 carbon dioxide, nitrous oxide, and halocarbon emissions are also provided, although complete 1995 estimates for methane are not yet available. Emissions of carbon dioxide increased by 1.9% from 1993 to 1994 and by an additional 0.8% from 1994 to 1995. Most carbon dioxide emissions are caused by the burning of fossil fuels for energy consumption, which is strongly related to economic growth, energy prices, and weather. The US economy grew rapidly in 1994 and slowed in 1995. Estimated emissions of methane increased slightly in 1994, as a result of a rise in emissions from energy and agricultural sources. Estimated nitrous oxide emissions increased by 1.8% in 1995, primarily due to increased use of nitrogen fertilizers and higher output of chemicals linked to nitrous oxide emissions. Estimated emissions of hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs), which are known to contribute to global warming, increased by nearly 11% in 1995, primarily as a result of increasing substitution for chlorofluorocarbons (CFCs). With the exception of methane, the historical emissions estimates presented in this report are only slightly revised from those in last year`s report.

  20. Wildland fire emissions, carbon, and climate: Emission factors Shawn Urbanski

    E-Print Network [OSTI]

    Wildland fire emissions, carbon, and climate: Emission factors Shawn Urbanski Missoula Fire burning Greenhouse gases Emission factors a b s t r a c t While the vast majority of carbon emitted mixture of gases and aerosols. Primary emissions include sig- nificant amounts of CH4 and aerosol (organic

  1. Advanced Coal Conversion Process Demonstration Project

    SciTech Connect (OSTI)

    Not Available

    1992-04-01T23:59:59.000Z

    Western Energy Company (WECO) was selected by the Department of Energy (DOE) to demonstrate the Advanced Coal Conversion Process (ACCP) which upgrades low rank coals into high Btu, low sulfur, synthetic bituminous coal. As specified in the Corporate Agreement, RSCP is required to develop an Environmental Monitoring Plan (EMP) which describes in detail the environmental monitoring activities to be performed during the project execution. The purpose of the EMP is to: (1) identify monitoring activities that will be undertaken to show compliance to applicable regulations, (2) confirm the specific environmental impacts predicted in the National Environmental Policy Act documentation, and (3) establish an information base of the assessment of the environmental performance of the technology demonstrated by the project. The EMP specifies the streams to be monitored (e.g. gaseous, aqueous, and solid waste), the parameters to be measured (e.g. temperature, pressure, flow rate), and the species to be analyzed (e.g. sulfur compounds, nitrogen compounds, trace elements) as well as human health and safety exposure levels. The operation and frequency of the monitoring activities is specified, as well as the timing for the monitoring activities related to project phase (e.g. preconstruction, construction, commissioning, operational, post-operational). The EMP is designed to assess the environmental impacts and the environmental improvements resulting from construction and operation of the project.

  2. High power density thermophotovoltaic energy conversion

    SciTech Connect (OSTI)

    Noreen, D.L. [R& D Technologies, Inc., Hoboken, New Jersey 07030 (United States); Du, H. [Department of Materials Science and Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030 (United States)

    1995-01-05T23:59:59.000Z

    R&D Technologies is developing thermophotovoltaic (TPV) technology based on the use of porous/fibrous ceramic broadband-type emitter designs that utilize recuperative or regenerative techniques to improve thermal efficiency and power density. This paper describes preliminary estimates of what will be required to accomplish sufficient power density to develop a practical, commercially-viable TPV generator. It addresses the needs for improved, thermal shock-resistant, long-life porous/fibrous ceramic emitters and provides information on the photocell technology required to achieve acceptable power density in broadband-type (with selective filter) TPV systems. TPV combustors/systems operating at a temperature of 1500 {degree}C with a broadband-type emitter is proposed as a viable starting point for cost-effective TPV conversion. Based on current projections for photocell cost, system power densities of 7.5--10 watts per square centimeter of emitter area will be required for TPV to become a commercially viable technology. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.

  3. Treatment and reuse of coal conversion wastewaters

    SciTech Connect (OSTI)

    Luthy, R.G.

    1980-01-01T23:59:59.000Z

    This paper presents a synopsis of recent experimental activities to evaluate processing characteristics of coal conversion wastewaters. Treatment studies have been performed with high-BTU coal gasification process quench waters to assess enhanced removal of organic compounds via powdered activated carbon-activated sludge treatment, and to evaluate a coal gasification wastewater treatment train comprised of sequential processing by ammonia removal, biological oxidation, lime-soda softening, granular activated carbon adsorption, and reverse osmosis. In addition, treatment studies are in progress to evaluate solvent extraction of gasification process wastewater to recover phenolics and to reduce wastewater loading of priority organic pollutants. Biological oxidation of coal gasification wastewater has shown excellent removal efficiencies of major and trace organic contaminants at moderate loadings, addition of powdered activated carbon provides lower effluent COD and color. Gasification process wastewater treated through biological oxidation, lime-soda softening and activated carbon adsorption appears suitable for reuse as cooling tower make-up water. Solvent extraction is an effective means to reduce organic loadings to downstream processing units. In addition, preliminary results have shown that solvent extraction removes chromatographable organic contaminants to low levels.

  4. Conversion of bagasse cellulose into ethanol

    SciTech Connect (OSTI)

    Cuzens, J.E.

    1997-11-19T23:59:59.000Z

    The study conducted by Arkenol was designed to test the conversion of feedstocks such as sugar cane bagasse, sorghum, napier grass and rice straw into fermentable sugars, and then ferment these sugars using natural yeasts and genetically engineered Zymomonis mobilis bacteria (ZM). The study did convert various cellulosic feedstocks into fermentable sugars utilizing the patented Arkenol Concentrated Acid Hydrolysis Process and equipment at the Arkenol Technology Center in Orange, California. The sugars produced using this process were in the concentration range of 12--15%, much higher than the sugar concentrations the genetically engineered ZM bacteria had been developed for. As a result, while the ZM bacteria fermented the produced sugars without initial inhibition, the completion of high sugar concentration fermentations was slower and at lower yield than predicted by the National Renewable Energy Laboratory (NREL). Natural yeasts performed as expected by Arkenol, similar to the results obtained over the last four years of testing. Overall, at sugar concentrations in the 10--13% range, yeast produced 850090% theoretical ethanol yields and ZM bacteria produced 82--87% theoretical yields in 96 hour fermentations. Additional commercialization work revealed the ability to centrifugally separate and recycle the ZM bacteria after fermentation, slight additional benefits from mixed culture ZM bacteria fermentations, and successful utilization of defined media for ZM bacteria fermentation nutrients in lieu of natural media.

  5. Evaluation of environmental-control technologies for commercial nuclear fuel-conversion (UF/sub 6/) facilities

    SciTech Connect (OSTI)

    Perkins, B.L.

    1982-10-01T23:59:59.000Z

    At present in the United States, there are two commercial conversion facilities. These facilities process uranium concentrate into UF/sub 6/ for shipment to the enrichment facilities. One conversion facility uses a dry hydrofluor process, whereas the other facility uses a process known as the wet solvent extraction-fluorination process. Because of the different processes used in the two plants, waste characteristics, quantities, and treatment practices differ at each facility. Wastes and effluent streams contain impurities found in the concentrate (such as uranium daughters, vanadium, molybdenum, selenium, arsenic, and ammonia) and process chemicals used in the circuit (including fluorine, nitrogen, and hydrogen), as well as small quantities of uranium. Studies of suitable disposal options for the solid wastes and sludges generated at the facilities and the long-term effects of emissions to the ambient environment are needed. 30 figures, 34 tables.

  6. Review and analysis of the 1980-1989 biomass thermochemical conversion program

    SciTech Connect (OSTI)

    Stevens, D.J.

    1994-09-01T23:59:59.000Z

    In the period between 1980 and 1989, the U.S. Department of Energy (DOE) sponsored research and development projects through its Biomass Thermochemical Conversion (BTC) Program. Thermochemical conversion technologies use elevated temperatures to convert biomass into more useful forms of energy such as fuel gases or transportation fuels. The BTC Program included a wide range of biomass conversion projects in the areas of gasification, pyrolysis, liquefaction, and combustion. This work formed the basis of the present DOE research and development efforts on advanced liquid fuel and power generation systems. At the beginning of Fiscal Year 1989, the management of the BTC Program was transferred from Pacific Northwest Laboratory (PNL) to National Renewable Energy Laboratory (NREL, formerly Solar Energy Research Institute). This document presents a summary of the research which was performed under the BTC Program during the 1981-1989 time frame. The document consists of an analysis of the research projects which were funded by the BTC Program and a bibliography of published documents. This work will help ensure that information from PNL`s BTC Program is available to those interested in biomass conversion technologies. The background of the BTC Program is discussed in the first chapter of this report. In addition, a brief summary of other related biomass research and development programs funded by the U.S. Department of Energy and others is presented with references where additional information can be found. The remaining chapters of the report present a detailed summary of the research projects which were funded by the BTC Program. The progress which was made on each project is summarized, the overall impact on biomass conversion is discussed, and selected references are provided.

  7. Installation This manual is available in English on the enclosed CD.

    E-Print Network [OSTI]

    van Hemmen, J. Leo

    data center design and construction. This Publication has been compiled in good faith by American PowerInstallation InRow® RD Air Cooled ACRD100 ACRD101 #12;This manual is available in English Conversion Corpo- ration assumes no liability for damages, violations of codes, improper installation, system

  8. Theory in Biology available light

    E-Print Network [OSTI]

    Nowak, Martin A.

    Magazine R406 Theory in Biology Theory is available light Martin A. Nowak Many people praise Gregor the neutral theory of evolution, which assumes that the overwhelming majority of molecular mutations do assume the neutral theory is correct. In a brilliant PhD thesis submitted in 1964, Bill Hamilton

  9. High K-alpha X-ray Conversion Efficiency From Extended Source Gas Jet Targets Irradiated by Ultra Short Laser Pulses

    SciTech Connect (OSTI)

    Kugland, N L; Constantin, C; Collette, A; Dewald, E; Froula, D; Glenzer, S H; Kritcher, A; Neumayer, P; Ross, J S; Niemann, C

    2007-11-01T23:59:59.000Z

    The absolute laser conversion efficiency to K{sub {alpha}}-like inner shell x-rays (integrated from K{sub {alpha}} to K{sub {beta}}) is observed to be an order of magnitude higher in argon gas jets than in solid targets due to enhanced emission from higher ionization stages following ultra short pulse laser irradiation. Excluding the higher ionization stages, the conversion efficiency to near-cold K{sub {alpha}} is the same in gas jets as in solid targets. These results demonstrate that gas jet targets are bright, high conversion efficiency, high repetition rate, debris-free multi-keV x-ray sources for spectrally resolved scattering and backlighting of rapidly evolving dense matter.

  10. J.Org. Chem. 1984,49, 3033-3035 3033 Proposed SequentialConversion of Coal's

    E-Print Network [OSTI]

    J.Org. Chem. 1984,49, 3033-3035 3033 SchemeI. @& Proposed SequentialConversion of Coal's Native moieties (func- tionalities determined to be important for lignins6and for low-rank coals'). In contrast "C, is one of condensation to make a dimeric furan! Sincein a coal systemthere will be some available

  11. May 1, 1998 / Vol. 23, No. 9 / OPTICS LETTERS 673 Lateral patterning of nonlinear frequency conversion with

    E-Print Network [OSTI]

    Fejer, Martin M.

    demonstrate control of the nonlinear conversion across a beam profile by using periodically poled lithium on the product of the pump field's amplitude and the interaction length, leading to inherently nonuniform properties of the medium, which are not available with conventional birefringent phase match- ing

  12. Web Availability of MACHO Data

    E-Print Network [OSTI]

    R. A. Allsman; T. S. Axelrod; for the Macho Collaboration

    2001-08-28T23:59:59.000Z

    The MACHO Project generated two-color photometric lightcurves for 73 million stars in the LMC, SMC, and the galactic bulge during its 8 years of observing. This photometry, along with all images and a catalog of LMC variable stars, is now available for viewing or download from the MACHO Project websites, http://wwwmacho.anu.edu.au/ or http://wwwmacho.mcmaster.ca/ . The capabilities and organization of the new data retrieval facility is described in this paper.

  13. Assessment of dynamic energy conversion systems for radioisotope heat sources

    SciTech Connect (OSTI)

    Thayer, G.R.; Mangeng, C.A.

    1985-06-01T23:59:59.000Z

    The use of dynamic conversion systems to convert the heat generated in a 7500 W(t) 90 Sr radioisotopic heat source to electricity is examined. The systems studies were Stirling; Brayton Cycle; three organic Rankines (ORCs) (Barber-Nichols/ORMAT, Sundstrand, and TRW); and an organic Rankine plus thermoelectrics. The systems were ranked for a North Warning System mission using a Los Alamos Multiattribute Decision Theory code. Three different heat source designs were used: case I with a beginning of life (BOL) source temperature of 640 C, case II with a BOL source temperature of 745/sup 0/C, and case III with a BOL source temperature of 945/sup 0/C. The Stirling engine system was the top-ranked system of cases I and II, closely followed by the ORC systems in case I and ORC plus thermoelectrics in case II. The Brayton cycle system was top-ranked for case III, with the Stirling engine system a close second. The use of /sup 238/Pu in heat source sizes of 7500 W(t) was examined and found to be questionable because of cost and material availability and because of additional requirements for analysis of safeguards and critical mass.

  14. Thermal emission in the ultrastrong coupling regime

    E-Print Network [OSTI]

    A. Ridolfo; M. Leib; S. Savasta; M. J. Hartmann

    2012-10-08T23:59:59.000Z

    We study thermal emission of a cavity quantum electrodynamic system in the ultrastrong-coupling regime where the atom-cavity coupling rate becomes comparable the cavity resonance frequency. In this regime, the standard descriptions of photodetection and dissipation fail. Following an approach that was recently put forward by Ridolfo et al.[arXiv:1206.0944], we are able to calculate the emission of systems with arbitrary strength of light matter interaction, by expressing the electric field operator in the cavity-emitter dressed basis. Here we present thermal photoluminescence spectra, calculated for given temperatures and for different couplings in particular for available circuit QED parameters.

  15. Biomass Thermochemical Conversion Program. 1983 Annual report

    SciTech Connect (OSTI)

    Schiefelbein, G.F.; Stevens, D.J.; Gerber, M.A.

    1984-08-01T23:59:59.000Z

    Highlights of progress achieved in the program of thermochemical conversion of biomass into clean fuels during 1983 are summarized. Gasification research projects include: production of a medium-Btu gas without using purified oxygen at Battelle-Columbus Laboratories; high pressure (up to 500 psia) steam-oxygen gasification of biomass in a fluidized bed reactor at IGT; producing synthesis gas via catalytic gasification at PNL; indirect reactor heating methods at the Univ. of Missouri-Rolla and Texas Tech Univ.; improving the reliability, performance, and acceptability of small air-blown gasifiers at Univ. of Florida-Gainesville, Rocky Creek Farm Gasogens, and Cal Recovery Systems. Liquefaction projects include: determination of individual sequential pyrolysis mechanisms at SERI; research at SERI on a unique entrained, ablative fast pyrolysis reactor for supplying the heat fluxes required for fast pyrolysis; work at BNL on rapid pyrolysis of biomass in an atmosphere of methane to increase the yields of olefin and BTX products; research at the Georgia Inst. of Tech. on an entrained rapid pyrolysis reactor to produce higher yields of pyrolysis oil; research on an advanced concept to liquefy very concentrated biomass slurries in an integrated extruder/static mixer reactor at the Univ. of Arizona; and research at PNL on the characterization and upgrading of direct liquefaction oils including research to lower oxygen content and viscosity of the product. Combustion projects include: research on a directly fired wood combustor/gas turbine system at Aerospace Research Corp.; adaptation of Stirling engine external combustion systems to biomass fuels at United Stirling, Inc.; and theoretical modeling and experimental verification of biomass combustion behavior at JPL to increase biomass combustion efficiency and examine the effects of additives on combustion rates. 26 figures, 1 table.

  16. Open cycle ocean thermal energy conversion system

    DOE Patents [OSTI]

    Wittig, J. Michael (West Goshen, PA)

    1980-01-01T23:59:59.000Z

    An improved open cycle ocean thermal energy conversion system including a flash evaporator for vaporizing relatively warm ocean surface water and an axial flow, elastic fluid turbine having a vertical shaft and axis of rotation. The warm ocean water is transmitted to the evaporator through a first prestressed concrete skirt-conduit structure circumferentially situated about the axis of rotation. The unflashed warm ocean water exits the evaporator through a second prestressed concrete skirt-conduit structure located circumferentially about and radially within the first skirt-conduit structure. The radially inner surface of the second skirt conduit structure constitutes a cylinder which functions as the turbine's outer casing and obviates the need for a conventional outer housing. The turbine includes a radially enlarged disc element attached to the shaft for supporting at least one axial row of radially directed blades through which the steam is expanded. A prestressed concrete inner casing structure of the turbine has upstream and downstream portions respectively situated upstream and downstream from the disc element. The radially outer surfaces of the inner casing portions and radially outer periphery of the axially interposed disc cooperatively form a downwardly radially inwardly tapered surface. An annular steam flowpath of increasing flow area in the downward axial direction is radially bounded by the inner and outer prestressed concrete casing structures. The inner casing portions each include a transversely situated prestressed concrete circular wall for rotatably supporting the turbine shaft and associated structure. The turbine blades are substantially radially coextensive with the steam flowpath and receive steam from the evaporator through an annular array of prestressed concrete stationary vanes which extend between the inner and outer casings to provide structural support therefor and impart a desired flow direction to the steam.

  17. Method for the photocatalytic conversion of gas hydrates

    DOE Patents [OSTI]

    Taylor, Charles E. (Pittsburg, PA); Noceti, Richard P. (Pittsburg, PA); Bockrath, Bradley C. (Bethel Park, PA)

    2001-01-01T23:59:59.000Z

    A method for converting methane hydrates to methanol, as well as hydrogen, through exposure to light. The process includes conversion of methane hydrates by light where a radical initiator has been added, and may be modified to include the conversion of methane hydrates with light where a photocatalyst doped by a suitable metal and an electron transfer agent to produce methanol and hydrogen. The present invention operates at temperatures below 0.degree. C., and allows for the direct conversion of methane contained within the hydrate in situ.

  18. Conversion of methane and acetylene into gasoline range hydrocarbons

    E-Print Network [OSTI]

    Alkhawaldeh, Ammar

    2000-01-01T23:59:59.000Z

    Conversion Apparatus. . . 20 22 Temperature Profile Inside the Reactor. . 30 Methane and Acetylene Conversion over Time on Stream, T = 412 C, Molar Feed Ratio = 6/I (CH4/CqHr). . 36 Mass Flow Rate (g/s) of the Effluent Gas (Unreacted Methane... and Acetylene, Isobutane, Ethylene, and Nitrogen) from the Reactor Integrated over Time on Stream. 40 Mass Flow Rate (g/s) of the Gas Products (Isobutane and Ethylene) Integrated over Time on Stream. 41 Methane and Acetylene Conversion over Time on Stream...

  19. Market-based approach for improving ship air emissions

    E-Print Network [OSTI]

    Donatelli, Matthew (Matthew Alfred)

    2009-01-01T23:59:59.000Z

    This study considered how appropriate different market-based approaches are for the reduction of ship air emissions, particularly CO2. Furthermore, the study also considered which types of market-based tools may be available ...

  20. Study of building material emissions and indoor air quality

    E-Print Network [OSTI]

    Yang, Xudong, 1966-

    1999-01-01T23:59:59.000Z

    Building materials and furnishings emit a wide variety of indoor pollutants, such as volatile organic compounds (VOCs). At present, no accurate models are available to characterize material emissions and sorption under ...

  1. The Treatment of Renewable Energy Certificates, EmissionsAllowances, and Green Power Programs in State Renewables PortfolioStandards

    SciTech Connect (OSTI)

    Holt, Edward A.; Wiser, Ryan H.

    2007-04-17T23:59:59.000Z

    Twenty-one states and the District of Columbia have adopted mandatory renewables portfolio standards (RPS) over the last ten years. Renewable energy attributes-such as the energy source, conversion technology, plant location and vintage, and emissions-are usually required to verify compliance with these policies, sometimes through attributes bundled with electricity, and sometimes with the attributes unbundled from electricity and traded separately as renewable energy certificates (RECs). This report summarizes the treatment of renewable energy attributes in state RPS rules. Its purpose is to provide a source of information for states considering RPS policies, and also to draw attention to certain policy issues that arise when renewable attributes and RECs are used for RPS compliance. Three specific issues are addressed: (1) the degree to which unbundled RECs are allowed under existing state RPS programs and the status of systems to track RECs and renewable energy attributes; (2) definitions of the renewable energy attributes that must be included in order to meet state RPS obligations, including the treatment of available emissions allowances; and (3) state policies on whether renewable energy or RECs sold through voluntary green power transactions may count towards RPS obligations.

  2. Controlled spontaneous emission

    E-Print Network [OSTI]

    Jae-Seung Lee; Mary A. Rohrdanz; A. K. Khitrin

    2007-07-03T23:59:59.000Z

    The problem of spontaneous emission is studied by a direct computer simulation of the dynamics of a combined system: atom + radiation field. The parameters of the discrete finite model, including up to 20k field oscillators, have been optimized by a comparison with the exact solution for the case when the oscillators have equidistant frequencies and equal coupling constants. Simulation of the effect of multi-pulse sequence of phase kicks and emission by a pair of atoms shows that both the frequency and the linewidth of the emitted spectrum could be controlled.

  3. Optimal irreversible stimulated emission

    E-Print Network [OSTI]

    D Valente; Y Li; J P Poizat; J M Gerard; L C Kwek; M F Santos; A Auffeves

    2012-08-28T23:59:59.000Z

    We studied the dynamics of an initially inverted atom in a semi-infinite waveguide, in the presence of a single propagating photon. We show that atomic relaxation is enhanced by a factor of 2, leading to maximal bunching in the output field. This optimal irreversible stimulated emission is a novel phenomenon that can be observed with state-of-the-art solid-state atoms and waveguides. When the atom interacts with two one-dimensional electromagnetic environments, the preferential emission in the stimulated field can be exploited to efficiently amplify a classical or a quantum state.

  4. HEU to LEU conversion and blending facility: Metal blending alternative to produce LEU oxide for disposal

    SciTech Connect (OSTI)

    NONE

    1995-09-01T23:59:59.000Z

    US DOE is examining options for disposing of surplus weapons-usable fissile materials and storage of all weapons-usable fissile materials. The nuclear material is converted to a form more proliferation- resistant than the original form. Blending HEU (highly enriched uranium) with less-enriched uranium to form LEU has been proposed as a disposition option. Five technologies are being assessed for blending HEU. This document provides data to be used in environmental impact analysis for the HEU-LEU disposition option that uses metal blending with an oxide waste product. It is divided into: mission and assumptions, conversion and blending facility descriptions, process descriptions and requirements, resource needs, employment needs, waste and emissions from plant, hazards discussion, and intersite transportation.

  5. Conversion and correction factors for historical measurements of Iodine-131 in Hanford-area vegetation, 1945--1947: Draft. Hanford Environmental Dose Reconstruction Project

    SciTech Connect (OSTI)

    Mart, E.I.; Denham, D.H.; Thiede, M.E.

    1993-05-01T23:59:59.000Z

    This report is a result of the Hanford Environmental Dose Reconstruction (HEDR) Project whose goal is to estimate the radiation dose that individuals could have received from emissions since 1944 at the US Department of Energy`s (DOE) Hanford Site near Richland, Washington. The report describes in detail the reconstructed conversion and correction factors for historical measurements of iodine-131 in Hanford-area vegetation which was collected from the beginning of October 1945 through the end of December 1947.

  6. Guidelines in Wave Energy Conversion System Design 

    E-Print Network [OSTI]

    Guiberteau, K. L.; Liu, Y.; Lee, J.; Kozman, T.

    2014-01-01T23:59:59.000Z

    This paper presents an investigational study on wave energy converters (WECs). The types of WEC available from the market are studied first. The design considerations for implementing a WEC in the Gulf of Mexico (GOM) are then evaluated...

  7. Emissions Trading and Air Toxics Emissions: RECLAIM and Toxics Regulation in the South Coast Air Basin

    E-Print Network [OSTI]

    Cohen, Nancy J.

    1993-01-01T23:59:59.000Z

    Emissions Trading and Air Toxics Emissions: RECLAIM anda mar- ket-based emissions trading program called theimpacts cre- ated by emissions trading programs that affect

  8. advanced conversion technologies: Topics by E-print Network

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

    Thomas S. Piwonka 1997-01-01 25 Energy Conversion Advanced Heat Transport Loop and Power Cycle Chang Oh CiteSeer Summary: ii iii The Department of Energy and the Idaho...

  9. Power conversion architecture for grid interface at high switching frequency

    E-Print Network [OSTI]

    Lim, Seungbum

    This paper presents a new power conversion architecture for single-phase grid interface. The proposed architecture is suitable for realizing miniaturized ac-dc converters operating at high frequencies (HF, above 3 MHz) and ...

  10. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    the external fluid mechanics of OTEC plants: report coveringocean thermal energy conversion (OTEC) plants by mid-1980's.1980. A baseline design of a 40-MW OTEC Pilot Johns Hopkins

  11. DRAFT. ENVIRONMENTAL ASSESSMENT OCEAN THERMAL ENERGY CONVERSION (OTEC) PILOT PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2014-01-01T23:59:59.000Z

    the external fluid mechanics of OTEC plants: report coveringthermal energy conversion ( OTEC) plants by mid-1980 1 s.distributiion at potential OTEC sites. p. 7D-4/1-4/5. In

  12. Coal Conversion Facility Privilege Tax Exemptions (North Dakota)

    Broader source: Energy.gov [DOE]

    Coal Conversion Facility Privilege Tax Exemptions are granted under a variety of conditions through the North Dakota Tax Department. Privilege tax, which is in lieu of property taxes on the...

  13. Thermoelectric Conversion of Wate Heat to Electricity in an IC...

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

    Wate Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Wate Heat to Electricity in an IC Engine Powered Vehicle Presentation given at the 16th...

  14. advanced coal conversion: Topics by E-print Network

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

    the coal plant is transmitted over the transmission lines, Phadke, Amol 2008-01-01 7 Clean Coal Technology Program Advanced Coal Conversion Process Demonstration CiteSeer Summary:...

  15. Control strategies for supercritical carbon dioxide power conversion systems

    E-Print Network [OSTI]

    Carstens, Nathan, 1978-

    2007-01-01T23:59:59.000Z

    The supercritical carbon dioxide (S-C02) recompression cycle is a promising advanced power conversion cycle which couples well to numerous advanced nuclear reactor designs. This thesis investigates the dynamic simulation ...

  16. Thermoelectrics and aerogels for solar energy conversion systems

    E-Print Network [OSTI]

    McEnaney, Kenneth

    2015-01-01T23:59:59.000Z

    Concerns about climate change, the world's growing energy needs, and energy independence are driving demand for solar energy conversion technologies. Solar thermal electricity generation has the potential to ll this demand. ...

  17. Drinking up endings: conversational resources of the café 

    E-Print Network [OSTI]

    Laurier, Eric

    2008-01-01T23:59:59.000Z

    A first theme of this article is the abiding relationship between the café and conversation. A relationship which begins with Habermas’s emphasis on political debate in early modernity and continues to more contemporary ...

  18. Opportunities and challenges in Very High Frequency power conversion

    E-Print Network [OSTI]

    Perreault, David J.

    This paper explores opportunities and challenges in power conversion in the VHF frequency range of 30-300 MHz. The scaling of magnetic component size with frequency is investigated, and it is shown that substantial ...

  19. Raconteur : intelligent assistance for conversational storytelling with media libraries

    E-Print Network [OSTI]

    Chi, Pei-Yu, S.M. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    People who are not professional storytellers sometimes have difficulty putting together a coherent and engaging story, even when it is about their own experiences. However, consider putting the same person in a conversation ...

  20. Kinetics of high-conversion hydrocracking of bitumen

    SciTech Connect (OSTI)

    Nagaishi, H.; Gray, M.R. [Univ. of Alberta, Edmonton (Canada); Chan, E.W.; Sanford, E.C. [Syncrude Canada, Edmonton, Alberta (Canada)

    1995-12-31T23:59:59.000Z

    Residues are complex mixtures of thousands of components. This mixture will change during hydrocracking, so that high conversion may result in a residue material with different characteristics from the starting material. Our objective is to determine the kinetics of residue conversion and yields of distillates at high conversions, and to relate these observations to the underlying chemical reactions. Athabasca bitumen was reacted in a 1-L CSTR in a multipass operation. Product from the first pass was collected, then run through the reactor again and so on, giving kinetic data under conditions that simulated a multi-reactor or packed-bed operation. Experiments were run both with hydrocracking catalyst and without added catalyst. Products were analyzed by distillation, elemental analysis, NMR, and GPC. These data will be used to derive a kinetic model for hydrocracking of bitumen residue covering a wide range of conversion (from 30% to 95%+), based on the underlying chemistry.

  1. Automotive Waste Heat Conversion to Electric Power using Skutterudites...

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

    Electric Power using Skutterudites, TAGS, PbTe and Bi2Te3 Automotive Waste Heat Conversion to Electric Power using Skutterudites, TAGS, PbTe and Bi2Te3 Presentation given at DEER...

  2. Workshop on Conversion Technologies for Advanced Biofuels - Bio...

    Office of Environmental Management (EM)

    Bio-Oils Workshop on Conversion Technologies for Advanced Biofuels - Bio-Oils Introduction presentation report-out at the CTAB webinar on bio-oils. ctabwebinarbiooilsintro.pdf...

  3. Theoretical investigation of solar energy conversion and water oxidation catalysis

    E-Print Network [OSTI]

    Wang, Lee-Ping

    2011-01-01T23:59:59.000Z

    Solar energy conversion and water oxidation catalysis are two great scientific and engineering challenges that will play pivotal roles in a future sustainable energy economy. In this work, I apply electronic structure ...

  4. Vertimass licenses ORNL biofuel-to-hydrocarbon conversion technology...

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

    McCorkle Communications and Media Relations 865.574.7308 Vertimass licenses ORNL biofuel-to-hydrocarbon conversion technology Vertimass LLC, a California-based start-up...

  5. Y-12 fulfills major milestone in fuel conversion commitment for...

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

    ... Y-12 fulfills major milestone in fuel conversion commitment for Jamaican research reactor Posted: June 3, 2014 - 4:42pm The Y-12 National Security Complex recently completed...

  6. Optimization of Oxygen Purity for Coal Conversion Energy Reduction

    E-Print Network [OSTI]

    Baker, C. R.; Pike, R. A.

    1982-01-01T23:59:59.000Z

    The conversion of coal into gaseous and liquid fuels and chemical feedstock will require large quantities of oxygen. This oxygen will be produced in large multi-train air separation plants which will consume about 350 kilowatt hours of energy...

  7. COMMERCIAL FISHERY DATA FROM A PROPOSED OCEAN THERMAL ENERGY CONVERSION (OTEC) SITE IN PUERTO RICO

    E-Print Network [OSTI]

    Ryan, Constance J.

    2013-01-01T23:59:59.000Z

    Ocean Thermal Energy Conversion (OTEC) sites to identify thefishery resources at potential OTEC sites. At this time, thethermal energy conversion (OTEC) program; preoperational

  8. Progress from DOE EF RC: Solid-State Solar-Thermal Energy Conversion...

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

    energy conversion center plus discussion on phonon transport and solar thermoelectric energy conversion chen.pdf More Documents & Publications Solar Thermoelectric...

  9. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    Solar Energy Conversion Applications By Dusan Coso B.S. (UniversitySolar Energy Conversion Applications by Dusan Coso Doctor of Philosophy in Engineering – Mechanical Engineering University

  10. A PRELIMINARY EVALUATION OF IMPINGEMENT AND ENTRAINMENT BY OCEAN THERMAL ENERGY CONVERSION (OTEC) PLANTS

    E-Print Network [OSTI]

    Sullivan, S.M.

    2013-01-01T23:59:59.000Z

    nental Assessment, Ocean Thermal Energy Conversion (OTEC)Impact Assessment Ocean Thermal Energy Conversion (OTEC),Intake Screens for Ocean Thermal Energy M.S. Thesis. Oregon

  11. Graphene Coating Coupled Emission

    E-Print Network [OSTI]

    Shyamasundar, R.K.

    Graphene Coating Coupled Emission A COMSET, A single sheet of sp2-hybridized carbon atoms, called of graphene and its unique properties, I will present amplification of surface graphene-Ag hybrid films which when graphene is used as the spacer layer in a conventional Ag- harnessed the nonlinear properties

  12. Secondary emission gas chamber

    E-Print Network [OSTI]

    V. In'shakov; V. Kryshkin; V. Skvortsov

    2014-12-10T23:59:59.000Z

    For a hadron calorimeter active element there is considered a gaseous secondary emis-sion detector (150 micron gap, 50 kV/cm). Such one-stage parallel plate chamber must be a radiation hard, fast and simple. A model of such detector has been produced, tested and some characteristics are presented.

  13. NEUTRINO SPIN AND FLAVOUR CONVERSION AND OSCILLATIONS IN MAGNETIC FIELD

    E-Print Network [OSTI]

    A. M. Egorov; G. G. Likhachev; A. I. Studenikin

    1995-06-09T23:59:59.000Z

    A review of the neutrino conversion and oscillations among the two neutrino species (active and sterile) induced by strong twisting magnetic field is presented and implications to neutrinos in neutron star, supernova, the Sun and interstellar galactic media are discussed. The ``cross-boundary effect" (CBE) (i.e., a possible conversion of one half of neutrinos of the bunch from active into sterile specie) at the surface of neutron star is also studied for a realistic neutron star structure.

  14. In Conversation with Jim Schuck: Nano-optics

    ScienceCinema (OSTI)

    Jim Schuck and Alice Egan

    2010-01-08T23:59:59.000Z

    Sponsored by Berkeley Lab's Materials Sciences Division (MSD), "In Conversation with" is a next generation science seminar series. Host Alice Egan is the assistant to MSD Director Miquel Salmeron. Alice conducts a fun and informative interview, touching on the lives and work of the guest. The first In Conversation With took place July 9 with Jim Schuck, a staff scientist in the Molecular Foundry's Imaging and Manipulation Facility as our first guest. He discussed the world of Nano-optics.

  15. ZERO EMISSION POWER GENERATION TECHNOLOGY DEVELOPMENT

    SciTech Connect (OSTI)

    Ronald Bischoff; Stephen Doyle

    2005-01-20T23:59:59.000Z

    Clean Energy Systems (CES) was previously funded by DOE's ''Vision 21'' program. This program provided a proof-of-concept demonstration that CES' novel gas generator (combustor) enabled production of electrical power from fossil fuels without pollution. CES has used current DOE funding for additional design study exercises which established the utility of the CES-cycle for retrofitting existing power plants for zero-emission operations and for incorporation in zero-emission, ''green field'' power plant concepts. DOE funding also helped define the suitability of existing steam turbine designs for use in the CES-cycle and explored the use of aero-derivative turbines for advanced power plant designs. This work is of interest to the California Energy Commission (CEC) and the Norwegian Ministry of Petroleum & Energy. California's air quality districts have significant non-attainment areas in which CES technology can help. CEC is currently funding a CES-cycle technology demonstration near Bakersfield, CA. The Norwegian government is supporting conceptual studies for a proposed 40 MW zero-emission power plant in Stavager, Norway which would use the CES-cycle. The latter project is called Zero-Emission Norwegian Gas (ZENG). In summary, current engineering studies: (1) supported engineering design of plant subsystems applicable for use with CES-cycle zero-emission power plants, and (2) documented the suitability and availability of steam turbines for use in CES-cycle power plants, with particular relevance to the Norwegian ZENG Project.

  16. Ammonia emission inventory for the state of Wyoming

    SciTech Connect (OSTI)

    Kirchstetter, Thomas W.; Maser, Colette R.; Brown, Nancy J.

    2003-12-17T23:59:59.000Z

    Ammonia (NH{sub 3}) is the only significant gaseous base in the atmosphere and it has a variety of impacts as an atmospheric pollutant, including the formation of secondary aerosol particles: ammonium sulfate and ammonium nitrate. NH{sub 3} preferentially forms ammonium sulfate; consequently ammonium nitrate aerosol formation may be limited by the availability of NH{sub 3}. Understanding the impact of emissions of oxides of sulfur and nitrogen on visibility, therefore, requires accurately determined ammonia emission inventories for use in air quality models, upon which regulatory and policy decisions increasingly depend. This report presents an emission inventory of NH{sub 3} for the state of Wyoming. The inventory is temporally and spatially resolved at the monthly and county level, and is comprised of emissions from individual sources in ten categories: livestock, fertilizer, domestic animals, wild animals, wildfires, soil, industry, mobile sources, humans, and publicly owned treatment works. The Wyoming NH{sub 3} inventory was developed using the Carnegie Mellon University (CMU) Ammonia Model as framework. Current Wyoming-specific activity data and emissions factors obtained from state agencies and published literature were assessed and used as inputs to the CMU Ammonia Model. Biogenic emissions from soils comprise about three-quarters of the Wyoming NH{sub 3} inventory, though emission factors from soils are highly uncertain. Published emission factors are scarce and based on limited measurements. In Wyoming, agricultural land, rangeland, and forests comprise 96% of the land area and essentially all of the estimated emissions from soils. Future research on emission rates of NH{sub 3} for these land categories may lead to a substantial change in the magnitude of soil emissions, a different inventory composition, and reduced uncertainty in the inventory. While many NH{sub 3} inventories include annual emissions, air quality modeling studies require finer temporal resolution. Published studies indicate higher emission rates from soils and animal wastes at higher temperatures, and temporal variation in fertilizer application. A recent inverse modeling study indicates temporal variation in regional NH{sub 3} emissions. Monthly allocation factors were derived to estimate monthly emissions from soils, livestock and wild animal waste based on annual emission estimates. Monthly resolution of NH{sub 3} emissions from fertilizers is based on fertilizer sales to farmers. Statewide NH{sub 3} emissions are highest in the late spring and early summer months.

  17. Nondestructive optical characterization of chemical conversion coatings on aluminum

    SciTech Connect (OSTI)

    Schram, T.; De Laet, J.; Terryn, H. [Vrije Univ. Brussel, Brussels (Belgium). Dept. of Metallurgy, Electrochemistry, and Materials Science

    1998-08-01T23:59:59.000Z

    Chromium phosphate conversion coatings on aluminum have been characterized with nondestructive optical techniques. Complementary vibrational spectroscopy techniques, i.e., Fourier transform infrared spectroscopy and confocal micro-Raman spectroscopy, prove the presence of chromium phosphate as principal component in the coating. Additionally, aluminum oxide and indications for the presence of chromium oxide and aluminum fluoride are found. Reflection/absorption infrared spectroscopy (RAIRS) allows analysis of coatings as thin as 40 nm, while confocal micro-Raman spectroscopy is limited to thicknesses above about 150 nm. Compared to RAIRS spectra, the interpretation of Raman spectra is easier due to the morphological characteristics of the conversion coatings, e.g., the coating thickness, using a simulation and regression procedure based on a two-layer optical model. The optical constants of the upper layer, which in a first approximation can be attributed to the chromium phosphate part of the conversion coating, can explain the greenish appearance of the thickest conversion coatings. A linear relationship exists between the coating thickness and the conversion time. An analogous linear relation exists between the conversion time and the peak areas of most of the absorption peaks in the RAIRS spectra.

  18. Optimization of extreme ultraviolet photons emission and collection in mass-limited laser produced plasmas for lithography application

    E-Print Network [OSTI]

    Harilal, S. S.

    Optimization of extreme ultraviolet photons emission and collection in mass-limited laser produced in DPP or with pre-pulsing in LPP provide wide area for optimization in regards to conversion efficiency and collection as well as calculating photons source location and size. We optimized several parameters of dual

  19. Preliminary core design studies for the advanced burner reactor over a wide range of conversion ratios.

    SciTech Connect (OSTI)

    Hoffman, E. A.; Yang, W. S.; Hill, R. N.; Nuclear Engineering Division

    2008-05-05T23:59:59.000Z

    A consistent set of designs for 1000 MWt commercial-scale sodium-cooled Advance Burner Reactors (ABR) have been developed for both metal and oxide-fueled cores with conversion ratios from breakeven (CR=1.0) to fertile-free (CR=0.0). These designs are expected to satisfy thermal and irradiation damage limits based on the currently available data. The very low conversion ratio designs require fuel that is beyond the current fuel database, which is anticipated to be qualified by and for the Advanced Burned Test Reactor. Safety and kinetic parameters were calculated, but a safety analysis was not performed. Development of these designs was required to achieve the primary goal of this study, which was to generate representative fuel cycle mass flows for system studies of ABRs as part of the Global Nuclear Energy Partnership (GNEP). There are slight variations with conversion ratio but the basic ABR configuration consists of 144 fuel assemblies and between 9 and 22 primary control assemblies for both the metal and oxide-fueled cores. Preliminary design studies indicated that it is feasible to design the ABR to accommodate a wide range of conversion ratio by employing different assembly designs and including sufficient control assemblies to accommodate the large reactivity swing at low conversion ratios. The assemblies are designed to fit within the same geometry, but the size and number of fuel pins within each assembly are significantly different in order to achieve the target conversion ratio while still satisfying thermal limits. Current irradiation experience would allow for a conversion ratio of somewhat below 0.75. The fuel qualification for the first ABR should expand this experience to allow for much lower conversion ratios and higher bunrups. The current designs were based on assumptions about the performance of high and very high enrichment fuel, which results in significant uncertainty about the details of the designs. However, the basic fuel cycle performance trends such as conversion ratio and mass flow parameters are less sensitive to these parameters and the current results should provide a good basis for static and dynamic system analysis. The conversion ratio is fundamentally a ratio of the macroscopic cross section of U-238 capture to that of TRU fission. Since the microscopic cross sections only change moderately with fuel design and isotopic concentration for the fast reactor, a specific conversion ratio requires a specific enrichment. The approximate average charge enrichment (TRU/HM) is 14%, 21%, 33%, 56%, and 100% for conversion ratios of 1.0, 0.75, 0.50, 0.25, and 0.0 for the metal-fueled cores. The approximate average charge enrichment is 17%, 25%, 38%, 60%, and 100% for conversion ratios of 1.0, 0.75, 0.50, 0.25, and 0.0 for the oxide-fueled core. For the split batch cores, the maximum enrichment will be somewhat higher. For both the metal and oxide-fueled cores, the reactivity feedback coefficients and kinetics parameters seem reasonable. The maximum single control assembly reactivity faults may be too large for the low conversion ratio designs. The average reactivity of the primary control assemblies was increased, which may cause the maximum reactivity of the central control assembly to be excessive. The values of the reactivity coefficients and kinetics parameters show that some values appear to improve significantly at lower conversion ratios while others appear far less favorable. Detailed safety analysis is required to determine if these designs have adequate safety margins or if appropriate design modifications are required. Detailed system analysis data has been generated for both metal and oxide-fueled core designs over the entire range of potential burner reactors. Additional data has been calculated for a few alternative fuel cycles. The systems data has been summarized in this report and the detailed data will be provided to the systems analysis team so that static and dynamic system analyses can be performed.

  20. Allocation of emission rights Economic incentives for emission

    E-Print Network [OSTI]

    for all countries High cost effectiviness:High cost effectiviness: International Emission trading Fairness NAM Department of Physical Resource Theory #12;Financial flows from emissions trading 450 ppmGDP SAS CPA WEU NAM Department of Physical Resource Theory #12;Financial flows from emissions trading 450

  1. Field emission from organic materials

    E-Print Network [OSTI]

    Kymissis, Ioannis, 1977-

    2003-01-01T23:59:59.000Z

    Field emission displays (FEDs) show great promise as high performance flat panel displays. The light emission process is efficient, long lifetimes are possible with high brightness, and bright passive matrix displays can ...

  2. Ocean Thermal Energy Conversion LUIS A. VEGA

    E-Print Network [OSTI]

    . Production, however, is peaking and humanity will face a steadily diminishing petroleum supply and higher make available to its customers. Baseload plant An energy plant devoted to the production of baseload generated by the production of electricity that are not included in the price charged to consumers

  3. Fuels, Engines & Emissions | Clean Energy | ORNL

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

    Fuels, Engines, Emissions SHARE Fuels, Engines and Emissions Research Fuels, Engines, and Emissions research at Oak Ridge National Laboratory is helping identify ways to increase...

  4. Greenhouse gas emissions in biogas production systems

    E-Print Network [OSTI]

    Dittert, Klaus; Senbayram, Mehmet; Wienforth, Babette; Kage, Henning; Muehling, Karl H

    2009-01-01T23:59:59.000Z

    Cameron KC. Nitrous oxide emissions from two dairy pastureand land use on N 2 O emissions from an imperfectly drainedoptions for N 2 O emissions from differently managed

  5. Neutronic Analyses for HEU to LEU fuel conversion of the Massachusetts Institute of Technology.

    SciTech Connect (OSTI)

    Wilson, E. H.; Newton, T. H.; Bergeron, A.; Horelik, N.; Stevens, J. G (Nuclear Engineering Division); ( NS)

    2011-03-02T23:59:59.000Z

    The Massachusetts Institute of Technology (MIT) reactor (MITR-II), based in Cambridge, Massachusetts, is a research reactor designed primarily for experiments using neutron beam and in-core irradiation facilities. It delivers a neutron flux comparable to current LWR power reactors in a compact 6 MW core using Highly Enriched Uranium (HEU) fuel. In the framework of its non-proliferation policies, the international community presently aims to minimize the amount of nuclear material available that could be used for nuclear weapons. In this geopolitical context, most research and test reactors both domestic and international have started a program of conversion to the use of Low Enriched Uranium (LEU) fuel. A new type of LEU fuel based on a mixture of uranium and molybdenum (UMo) is expected to allow the conversion of compact high performance reactors like the MITR-II. This report presents the results of steady state neutronic safety analyses for conversion of MITR-II from the use of HEU fuel to the use of U-Mo LEU fuel. The objective of this work was to demonstrate that the safety analyses meet current requirements for an LEU core replacement of MITR-II.

  6. 6, 57735796, 2006 Vehicular emissions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    be partly responsible for lower CO2 and higher CO and NO emission factors. Also, a fast reduction the emission (in g/km) of key and non-regulated pollutants, such as CO2, CO, NO, SO2, NH3, HCHO, NMHC, dur-10 of pollutants, even from a super ultra-low emission vehicle (SULEV). The emissions of HC's, NOx, CO20 and CO2

  7. Chemical Emissions of Residential Materials and Products: Review of Available Information

    E-Print Network [OSTI]

    Willem, Henry

    2010-01-01T23:59:59.000Z

    EQ points. Outdoor air ventilation, local exhaust, airSection no. 4.5) Local exhaust ventilation to outdoors

  8. Closed Brayton cycle power conversion systems for nuclear reactors :

    SciTech Connect (OSTI)

    Wright, Steven A.; Lipinski, Ronald J.; Vernon, Milton E.; Sanchez, Travis

    2006-04-01T23:59:59.000Z

    This report describes the results of a Sandia National Laboratories internally funded research program to study the coupling of nuclear reactors to gas dynamic Brayton power conversion systems. The research focused on developing integrated dynamic system models, fabricating a 10-30 kWe closed loop Brayton cycle, and validating these models by operating the Brayton test-loop. The work tasks were performed in three major areas. First, the system equations and dynamic models for reactors and Closed Brayton Cycle (CBC) systems were developed and implemented in SIMULINKTM. Within this effort, both steady state and dynamic system models for all the components (turbines, compressors, reactors, ducting, alternators, heat exchangers, and space based radiators) were developed and assembled into complete systems for gas cooled reactors, liquid metal reactors, and electrically heated simulators. Various control modules that use proportional-integral-differential (PID) feedback loops for the reactor and the power-conversion shaft speed were also developed and implemented. The simulation code is called RPCSIM (Reactor Power and Control Simulator). In the second task an open cycle commercially available Capstone C30 micro-turbine power generator was modified to provide a small inexpensive closed Brayton cycle test loop called the Sandia Brayton test-Loop (SBL-30). The Capstone gas-turbine unit housing was modified to permit the attachment of an electrical heater and a water cooled chiller to form a closed loop. The Capstone turbine, compressor, and alternator were used without modification. The Capstone systems nominal operating point is 1150 K turbine inlet temperature at 96,000 rpm. The annular recuperator and portions of the Capstone control system (inverter) and starter system also were reused. The rotational speed of the turbo-machinery is controlled by adjusting the alternator load by using the electrical grid as the load bank. The SBL-30 test loop was operated at the manufacturers site (Barber-Nichols Inc.) and installed and operated at Sandia. A sufficiently detailed description of the loop is provided in this report along with the design characteristics of the turbo-alternator-compressor set to allow other researchers to compare their results with those measured in the Sandia test-loop. The third task consisted of a validation effort. In this task the test loop was operated and compared with the modeled results to develop a more complete understanding of this electrically heated closed power generation system and to validate the model. The measured and predicted system temperatures and pressures are in good agreement, indicating that the model is a reasonable representation of the test loop. Typical deviations between the model and the hardware results are less than 10%. Additional tests were performed to assess the capability of the Brayton engine to continue to remove decay heat after the reactor/heater is shutdown, to develop safe and effective control strategies, and to access the effectiveness of gas inventory control as an alternative means to provide load following. In one test the heater power was turned off to simulate a rapid reactor shutdown, and the turbomachinery was driven solely by the sensible heat stored in the heater for over 71 minutes without external power input. This is an important safety feature for CBC systems as it means that the closed Brayton loop will keep cooling the reactor without the need for auxiliary power (other than that needed to circulate the waste heat rejection coolant) provided the heat sink is available.

  9. 4, 507532, 2004 Emission uncertainty

    E-Print Network [OSTI]

    Boyer, Edmond

    and Physics Discussions Impact of different emission inventories on simulated tropospheric ozone over China The importance of emission inventory uncertainty on the simulation of summertime tro- pospheric Ozone over China has been analyzed using a regional chemical transport model. Three independent emissions inventories

  10. Low emissions diesel fuel

    DOE Patents [OSTI]

    Compere, A.L.; Griffith, W.L.; Dorsey, G.F.; West, B.H.

    1998-05-05T23:59:59.000Z

    A method and matter of composition for controlling NO{sub x} emissions from existing diesel engines. The method is achieved by adding a small amount of material to the diesel fuel to decrease the amount of NO{sub x} produced during combustion. Specifically, small amounts, less than about 1%, of urea or a triazine compound (methylol melamines) are added to diesel fuel. Because urea and triazine compounds are generally insoluble in diesel fuel, microemulsion technology is used to suspend or dissolve the urea or triazine compound in the diesel fuel. A typical fuel formulation includes 5% t-butyl alcohol, 4.5% water, 0.5% urea or triazine compound, 9% oleic acid, and 1% ethanolamine. The subject invention provides improved emissions in heavy diesel engines without the need for major modifications.

  11. Low emissions diesel fuel

    DOE Patents [OSTI]

    Compere, Alicia L. (Knoxville, TN); Griffith, William L. (Oak Ridge, TN); Dorsey, George F. (Farragut, TN); West, Brian H. (Kingston, TN)

    1998-01-01T23:59:59.000Z

    A method and matter of composition for controlling NO.sub.x emissions from existing diesel engines. The method is achieved by adding a small amount of material to the diesel fuel to decrease the amount of NO.sub.x produced during combustion. Specifically, small amounts, less than about 1%, of urea or a triazine compound (methylol melamines) are added to diesel fuel. Because urea and triazine compounds are generally insoluble in diesel fuel, microemulsion technology is used to suspend or dissolve the urea or triazine compound in the diesel fuel. A typical fuel formulation includes 5% t-butyl alcohol, 4.5% water, 0.5% urea or triazine compound, 9% oleic acid, and 1% ethanolamine. The subject invention provides improved emissions in heavy diesel engines without the need for major modifications.

  12. Conversion of associated natural gas to liquid hydrocarbons. Final report, June 1, 1995--January 31, 1997

    SciTech Connect (OSTI)

    NONE

    1997-12-31T23:59:59.000Z

    The original concept envisioned for the use of Fischer-Tropsch processing (FTP) of United States associated natural gas in this study was to provide a way of utilizing gas which could not be brought to market because a pipeline was not available or for which there was no local use. Conversion of gas by FTP could provide a means of utilizing offshore associated gas which would not require installation of a pipeline or re-injection. The premium quality F-T hydrocarbons produced by conversion of the gas can be transported in the same way as the crude oil or in combination (blended) with it, eliminating the need for a separate gas transport system. FTP will produce a synthetic crude oil, thus increasing the effective size of the resource. The two conventional approaches currently used in US territory for handling of natural gas associated with crude petroleum production are re-injection and pipelining. Conversion of natural gas to a liquid product which can be transported to shore by tanker can be accomplished by FTP to produce hydrocarbons, or by conversion to chemical products such as methanol or ammonia, or by cryogenic liquefaction (LNG). This study considers FTP and briefly compares it to methanol and LNG. The Energy International Corporation cobalt catalyst, ratio adjusted, slurry bubble column F-T process was used as the basis for the study and the comparisons. An offshore F-T plant can best be accommodated by an FPSO (Floating Production, Storage, Offloading vessel) based on a converted surplus tanker, such as have been frequently used around the world recently. Other structure types used in deep water (platforms) are more expensive and cannot handle the required load.

  13. Development of Integrated Online Monitoring Systems for Detection of Diversion at Natural Uranium Conversion Facilities

    SciTech Connect (OSTI)

    Dewji, Shaheen A [ORNL] [ORNL; Lee, Denise L [ORNL] [ORNL; Croft, Stephen [ORNL] [ORNL; McElroy, Robert Dennis [ORNL] [ORNL; Hertel, Nolan [Georgia Institute of Technology] [Georgia Institute of Technology; Chapman, Jeffrey Allen [ORNL] [ORNL; Cleveland, Steven L [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    Recent work at Oak Ridge National Laboratory (ORNL) has focused on some source term modeling of uranyl nitrate (UN) as part of a comprehensive validation effort employing gamma-ray detector instrumentation for the detection of diversion from declared conversion activities. Conversion, the process by which natural uranium ore (yellowcake) is purified and converted through a series of chemical processes into uranium hexafluoride gas (UF6), has historically been excluded from the nuclear safeguards requirements of the 235U-based nuclear fuel cycle. The undeclared diversion of this product material could potentially provide feedstock for a clandestine weapons program for state or non-state entities. Given the changing global political environment and the increased availability of dual-use nuclear technology, the International Atomic Energy Agency has evolved its policies to emphasize safeguarding this potential feedstock material in response to dynamic and evolving potential diversion pathways. To meet the demand for instrumentation testing at conversion facilities, ORNL developed the Uranyl Nitrate Calibration Loop Equipment (UNCLE) facility to simulate the full-scale operating conditions of a purified uranium-bearing aqueous stream exiting the solvent extraction process in a natural uranium conversion plant. This work investigates gamma-ray signatures of UN circulating in the UNCLE facility and evaluates detector instrumentation sensitivity to UN for safeguards applications. These detector validation activities include assessing detector responses to the UN gamma-ray signatures for spectrometers based on sodium iodide, lanthanum bromide, and germanium detectors. The results of measurements under static and dynamic operating conditions at concentrations ranging from 10-90g U/L of naturally enriched UN will be presented. A range of gamma-ray lines was examined and self-attenuation factors were calculated, in addition to attenuation for transmission measurement of density, concentration and enrichment. A detailed uncertainty analysis will be presented providing insights into instrumentation limitations to spoofing.

  14. Advanced technologies for decomtamination and conversion of scrap metal

    SciTech Connect (OSTI)

    Valerie MacNair; Steve Sarten; Thomas Muth; Brajendra Mishra

    1999-05-27T23:59:59.000Z

    The Department of Energy (DOE) faces the task of decommissioning much of the vast US weapons complex. One challenge of this effort includes the disposition of large amounts of radioactively contaminated scrap metal (RSM) including but not limited to steel, nickel, copper, and aluminum. The decontamination and recycling of RSM has become a key element in the DOE's strategy for cleanup of contaminated sites and facilities. Recycling helps to offset the cost of decommissioning and saves valuable space in the waste disposal facilities. It also reduces the amount of environmental effects associated with mining new metals. Work on this project is geared toward finding decontamination and/or recycling alternatives for the RSM contained in the decommissioned gaseous diffusion plants including approximately 40,000 tons of nickel. The nickel is contaminated with Technetium-99, and is difficult to remove using traditional decontamination technologies. The project, titled ``Advanced Technologies for Decontamination and Conversion of Scrap Metal'' was proposed as a four phase project. Phase 1 and 2 are complete and Phase 3 will complete May 31, 1999. Stainless steel made from contaminated nickel barrier was successfully produced in Phase 1. An economic evaluation was performed and a market study of potential products from the recycled metal was completed. Inducto-slag refining, after extensive testing, was eliminated as an alternative to remove technetium contamination from nickel. Phase 2 included successful lab scale and pilot scale demonstrations of electrorefining to separate technetium from nickel. This effort included a survey of available technologies to detect technetium in volumetrically contaminated metals. A new process to make sanitary drums from RSM was developed and implemented. Phase 3 included a full scale demonstration of electrorefining, an evaluation of electro-refining alternatives including direct dissolution, melting of nickel into anodes, a laser cutting demonstration, an investigation of commercial markets for RSM, and refinement of methods to quantify isotopic elements.

  15. Gas Turbine Emissions

    E-Print Network [OSTI]

    Frederick, J. D.

    technology developers and electric utilities will share emissions reductions in the coming era of pollution allowance trading is becoming prominent on the agendas of strategic planners at technology vendors and the electric power industry ??? ? (1...., "Authority to Construct for Badger Creek Limited," Kern County Air Pollution Control District, Bakersfield.. Ca., June 20, 1989. 3) Wark, K. and Warner, C. F., Air Pollution - Its Origin and Control, Harper and Row, New York, New York, 1976, pp. 453...

  16. Analysis of Emission Shapes

    E-Print Network [OSTI]

    P. Danielewicz

    2007-07-03T23:59:59.000Z

    Shapes of relative emission sources can be accessed by expanding shapes of correlations at low relative velocities in pair center of mass in Cartesian harmonics. Coefficients of expansion for correlations are related to the respective coefficients of expansion for the sources through one dimensional integral transforms involving properties of pair relative wavefunctions. The methodology is illustrated with analyses of NA49 and PHENIX correlation data.

  17. Antenna-coupled Photon Emission from hexagonal Boron Nitride Tunnel Junctions

    E-Print Network [OSTI]

    Parzefall, Markus; Jain, Achint; Watanabe, Kenji; Taniguchi, Takashi; Novotny, Lukas

    2015-01-01T23:59:59.000Z

    The ultrafast conversion of electrical to optical signals at the nanoscale is of fundamental interest for data processing, telecommunication and optical interconnects. However, the modulation bandwidths of semiconductor LEDs are limited by the spontaneous recombination rate of electron-hole pairs and the footprint of electrically-driven ultrafast lasers is too large for practical on-chip integration. A metal-insulator-metal (MIM) tunnel junction approaches the ultimate size limit of electronic devices and its operating speed is fundamentally limited only by the tunneling time. Here we study the conversion of electron energy - localized in vertical gold-h-BN-gold tunnel junctions - into free space photons, mediated by resonant slot antennas. Optical antennas efficiently bridge the size-mismatch between nanoscale volumes and far-field radiation and strongly enhance the electron-photon conversion efficiency. We achieve polarized, directional and resonantly enhanced light emission from inelastic electron tunnelin...

  18. Te (R,t) Measurements using Electron Bernstein Wave Thermal Emission on NSTX

    SciTech Connect (OSTI)

    Diem, S J; Efthimion, P C; LeBlanc, B P; Carter, M; Caughman, J; Wilgen, J B; Harvey, R W; Preinhaelter, J; Urban, J

    2006-06-09T23:59:59.000Z

    The National Spherical Torus Experiment (NSTX) routinely studies overdense plasmas with ne of (1–5) X 1019 m-3 and total magnetic field of <0.6 T, so that the first several electron cyclotron harmonics are overdense. The electrostatic electron Bernstein wave (EBW) can propagate in overdense plasmas, exhibits strong absorption, and is thermally emitted at electron cyclotron harmonics. These properties allow thermal EBW emission to be used for local Te measurement. A significant upgrade to the previous NSTX EBW emission diagnostic to measure thermal EBW emission via the oblique B-X-O mode conversion process has been completed. The new EBW diagnostic consists of two remotely steerable, quad-ridged horn antennas, each of which is coupled to a dual channel radiometer. Fundamental (8–18 GHz) and second and third harmonic (18–40 GHz) thermal EBW emission and polarization measurements can be obtained simultaneously.

  19. Surface tension induced by sphingomyelin to ceramide conversion in lipid membranes

    E-Print Network [OSTI]

    Surface tension induced by sphingomyelin to ceramide conversion in lipid membranes Iván López-Montero

  20. Assistant, Associate or Full Professor (Mid-Career)(10-657) Energy Conversion Position in MAE

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    , and biofuels. Excellent candidates in other areas of energy conversion will also be given full consideration

  1. SYNTAX-DIRECTED TRANSLATION SCHEMES FOR MULTI -AGENT SYSTEMS CONVERSATION MODELLING

    E-Print Network [OSTI]

    Fred, Ana

    SYNTAX-DIRECTED TRANSLATION SCHEMES FOR MULTI - AGENT SYSTEMS CONVERSATION MODELLING Ana Fred-intensive business processes based on formal conversations, i.e. partially ordered sets of communicative acts representation of agent conversations. In this paper we present a formal method for conversation representation

  2. Energy Conversion and Storage Program: 1992 Annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1993-06-01T23:59:59.000Z

    This report is the 1992 annual progress report for the Energy Conversion and Storage Program, a part of the Energy and Environment Division of the Lawrence Berkeley Laboratory. Work described falls into three broad areas: electrochemistry; chemical applications; and materials applications. The Energy Conversion and Storage Program applies principles of chemistry and materials science to solve problems in several areas: (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes and chemical species, and (5) study and application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Chemical applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing product and waste streams from synfuel plants, coal gasifiers, and biomass conversion processes. Materials applications research includes evaluation of the properties of advanced materials, as well as development of novel preparation techniques. For example, techniques such as sputtering, laser ablation, and poised laser deposition are being used to produce high-temperature superconducting films.

  3. Jet conversions in a quark-gluon plasma

    E-Print Network [OSTI]

    W. Liu; C. M. Ko; B. W. Zhang

    2007-05-05T23:59:59.000Z

    Quark and gluon jets traversing through a quark-gluon plasma not only lose their energies but also can undergo flavor conversions. The conversion rates via the elastic $q(\\bar q)g\\to gq(\\bar q)$ and the inelastic $q\\bar q\\leftrightarrow gg$ scatterings are evaluated in the lowest order in QCD. Including both jet energy loss and conversions in the expanding quark-gluon plasma produced in relativistic heavy ion collisions, we have found a net conversion of quark to gluon jets. This reduces the difference between the nuclear modification factors for quark and gluon jets in central heavy ion collisions and thus enhances the $p/\\pi^+$ and ${\\bar p}/\\pi^-$ ratios at high transverse momentum. However, a much larger net quark to gluon jet conversion rate than the one given by the lowest-order QCD is needed to account for the observed similar ratios in central Au+Au and p+p collisions at same energy. Implications of our results are discussed.

  4. 26th Intersociety Energy Conversion Engineering Conference

    SciTech Connect (OSTI)

    Withrow, C.A.; Kohout, L.L.; Bents, D.J.; Colozza, A.J.

    1991-05-01T23:59:59.000Z

    A trade study of power system technology for proposed lunar vehicles and servicers is presented. A variety of solar-based power systems were selected and analyzed for each. The analysis determined the power system mass, volume, and deployed area. A comparison was made between periodic refueling/recharging systems and onboard power systems to determine the most practical system. The trade study concluded that the power system significantly impacts the physical characteristics of the vehicle. The refueling/recharging systems were lighter and more compact, but dependent on availability of established lunar base infrastructure. Onboard power systems pay a mass penalty for being fully developed systems.

  5. Distributed Energy Resources for Carbon Emissions Mitigation

    E-Print Network [OSTI]

    Firestone, Ryan; Marnay, Chris

    2008-01-01T23:59:59.000Z

    Distributed Energy Resource Technology Characterizations. ”ABORATORY Distributed Energy Resources for Carbon Emissions5128 Distributed Energy Resources for Carbon Emissions

  6. Measurement and Characterization of Unregulated Emissions from...

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

    & Publications Ethanol Effects on Lean-Burn and Stoichiometric GDI Emissions Measurement and Characterization of Unregulated Emissions from Advanced Technologies...

  7. Resource Limits and Conversion Efficiency with Implications for Climate Change

    E-Print Network [OSTI]

    Croft, Gregory Donald

    2009-01-01T23:59:59.000Z

    coal seam thickness or water production in oil fields. Theinclude carbon emissions and water usage. A graph showing ain Part II. The lack of water, environmental problems with

  8. Plasma-induced conversion of surface-adsorbed hydrocarbons

    SciTech Connect (OSTI)

    Sackinger, W.M.

    1992-07-01T23:59:59.000Z

    Experimental results are reported for an electrical device for direct conversion of methane into higher hydrocarbons. A microchannel plate is excited with electrons from a photoemissive source, and electron impact ionization of methane on the inner surfaces of the microchannels creates an ion feedback process. The resulting low-density plasma creates higher hydrocarbons when charged particles impact the surfaces at grazing incidence. The production Of C{sub 2} to C{sub 8}-containing gases was noted, with a selectivity for C{sub 2} of 39% in one case. The proportions of converted products and the conversion rates depend upon the electrical voltage, the microchannel geometry, and the operating pressure. Conversion rates increase with operating pressure.

  9. Plasma-induced conversion of surface-adsorbed hydrocarbons

    SciTech Connect (OSTI)

    Sackinger, W.M.

    1992-01-01T23:59:59.000Z

    Experimental results are reported for an electrical device for direct conversion of methane into higher hydrocarbons. A microchannel plate is excited with electrons from a photoemissive source, and electron impact ionization of methane on the inner surfaces of the microchannels creates an ion feedback process. The resulting low-density plasma creates higher hydrocarbons when charged particles impact the surfaces at grazing incidence. The production Of C{sub 2} to C{sub 8}-containing gases was noted, with a selectivity for C{sub 2} of 39% in one case. The proportions of converted products and the conversion rates depend upon the electrical voltage, the microchannel geometry, and the operating pressure. Conversion rates increase with operating pressure.

  10. Novel, Integrated Reactor / Power Conversion System (LMR-AMTEC)

    SciTech Connect (OSTI)

    Pablo Rubiolo, Principal Investigator

    2003-03-21T23:59:59.000Z

    The main features of this project were the development of a long life (up to 10 years) Liquid Metal Reactor (LMR) and a static conversion subsystem comprising an Alkali Metal Thermal-to-Electric (AMTEC) topping cycle and a ThermoElectric (TE) Bottom cycle. Various coupling options of the LMR with the energy conversion subsystem were explored and, base in the performances found in this analysis, an Indirect Coupling (IC) between the LMR and the AMTEC/TE converters with Alkali Metal Boilers (AMB) was chosen as the reference design. The performance model of the fully integrated sodium-and potassium-AMTEC/TE converters shows that a combined conversion efficiency in excess of 30% could be achieved by the plant. (B204)

  11. Proceedings of the 25th intersociety energy conversion engineering conference

    SciTech Connect (OSTI)

    Nelson, P.A.; Schertz, W.W.; Till, R.H.

    1990-01-01T23:59:59.000Z

    This book contains the proceedings of the 25th Intersociety Energy Conversion Engineering Conference. Volume 5 is organized under the following headings: Photovoltaics I, Photovoltaics II, Geothermal power, Thermochemical conversion of biomass, Energy from waste and biomass, Solar thermal systems for environmental applications, Solar thermal low temperature systems and components, Solar thermal high temperature systems and components, Wind systems, Space power sterling technology Stirling cooler developments, Stirling solar terrestrial I, Stirling solar terrestrial II, Stirling engine generator sets, Stirling models and simulations, Stirling engine analysis, Stirling models and simulations, Stirling engine analysis, Stirling engine loss understanding, Novel engine concepts, Coal conversion and utilization, Power cycles, MHD water propulsion I, Underwater vehicle powerplants - performance, MHD underwater propulsion II, Nuclear power, Update of advanced nuclear power reactor concepts.

  12. Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    DOE Patents [OSTI]

    Brown, E.J.; Baldasaro, P.F.; Dziendziel, R.J.

    1997-12-23T23:59:59.000Z

    A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength {lambda}{sub IF} approximately equal to the bandgap wavelength {lambda}{sub g} of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5{lambda}{sub IF} to {lambda}{sub IF} and reflect from {lambda}{sub IF} to about 2{lambda}{sub IF}; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5{lambda}{sub IF}. 10 figs.

  13. Segregated tandem filter for enhanced conversion efficiency in a thermophotovoltaic energy conversion system

    DOE Patents [OSTI]

    Brown, Edward J. (Clifton Park, NY); Baldasaro, Paul F. (Clifton Park, NY); Dziendziel, Randolph J. (Middlegrove, NY)

    1997-01-01T23:59:59.000Z

    A filter system to transmit short wavelength radiation and reflect long wavelength radiation for a thermophotovoltaic energy conversion cell comprises an optically transparent substrate segregation layer with at least one coherent wavelength in optical thickness; a dielectric interference filter deposited on one side of the substrate segregation layer, the interference filter being disposed toward the source of radiation, the interference filter including a plurality of alternating layers of high and low optical index materials adapted to change from transmitting to reflecting at a nominal wavelength .lambda..sub.IF approximately equal to the bandgap wavelength .lambda..sub.g of the thermophotovoltaic cell, the interference filter being adapted to transmit incident radiation from about 0.5.lambda..sub.IF to .lambda..sub.IF and reflect from .lambda..sub.IF to about 2.lambda..sub.IF ; and a high mobility plasma filter deposited on the opposite side of the substrate segregation layer, the plasma filter being adapted to start to become reflecting at a wavelength of about 1.5.lambda..sub.IF.

  14. Adding value to coal conversion`s char: A strategy for lower-priced fuels

    SciTech Connect (OSTI)

    Kruse, C.W. [Illinois State Geological Survey, Champaign, IL (United States); Fatemi, M. [Amoco Corporation, Naperville, IL (United States); Feizoulof, C. [Univ. of Illinois, Urbana, IL (United States)

    1994-12-31T23:59:59.000Z

    Coal`s low hydrogen to carbon ratio gives coal physical properties that are not the most desired in fuel markets. The problem is dealt with in conversion technologies designed to upgrade coal to more desirable fuels by either: (1) chemically adding hydrogen, as in liquefaction or high-BTU gasification, or (2) the production of char, as in mild gasification. The first option is neither cost-effective nor environmentally sound. Liquefaction results in the production of one mole of carbon dioxide for each mole of hydrogen needed. The result is that despite the preferred hydrogen to carbon ratio in the fuel, carbon dioxide is produced in greater quantities than it would be by simply burning the coal. The depressed market value of char is the primary drawback of coal utilization technologies exercising the second option. Making value-added, non-fuel products from char could significantly improve the economics of overall operations and result in competitively-priced premium hydrocarbon fuels. The research goal of a growing number of groups, including ours, is to produce and describe carbon products which will command higher prices than the carbon (coal) from which they were produced.

  15. Statistics of multiphoton events in spontaneous parametric down-conversion

    E-Print Network [OSTI]

    Wojciech Wasilewski; Czeslaw Radzewicz; Robert Frankowski; Konrad Banaszek

    2008-05-12T23:59:59.000Z

    We present an experimental characterization of the statistics of multiple photon pairs produced by spontaneous parametric down-conversion realized in a nonlinear medium pumped by high-energy ultrashort pulses from a regenerative amplifier. The photon number resolved measurement has been implemented with the help of a fiber loop detector. We introduce an effective theoretical description of the observed statistics based on parameters that can be assigned direct physical nterpretation. These parameters, determined for our source from the collected experimental data, characterize the usefulness of down-conversion sources in multiphoton interference schemes that underlie protocols for quantum information processing and communication.

  16. THERMOCHEMICAL CONVERSION OF FERMENTATION-DERIVED OXYGENATES TO FUELS

    SciTech Connect (OSTI)

    Ramasamy, Karthikeyan K.; Wang, Yong

    2013-06-01T23:59:59.000Z

    At present ethanol generated from renewable resources through fermentation process is the dominant biofuel. But ethanol suffers from undesirable fuel properties such as low energy density and high water solubility. The production capacity of fermentation derived oxygenates are projected to rise in near future beyond the current needs. The conversion of oxygenates to hydrocarbon compounds that are similar to gasoline, diesel and jet fuel is considered as one of the viable option. In this chapter the thermo catalytic conversion of oxygenates generated through fermentation to fuel range hydrocarbons will be discussed.

  17. Methods for natural gas and heavy hydrocarbon co-conversion

    DOE Patents [OSTI]

    Kong, Peter C. (Idaho Falls, ID); Nelson, Lee O. (Idaho Falls, ID); Detering, Brent A. (Idaho Falls, ID)

    2009-02-24T23:59:59.000Z

    A reactor for reactive co-conversion of heavy hydrocarbons and hydrocarbon gases and includes a dielectric barrier discharge plasma cell having a pair of electrodes separated by a dielectric material and passageway therebetween. An inlet is provided for feeding heavy hydrocarbons and other reactive materials to the passageway of the discharge plasma cell, and an outlet is provided for discharging reaction products from the reactor. A packed bed catalyst may optionally be used in the reactor to increase efficiency of conversion. The reactor can be modified to allow use of a variety of light sources for providing ultraviolet light within the discharge plasma cell. Methods for upgrading heavy hydrocarbons are also disclosed.

  18. Simultaneous constraint and phase conversion processing of oxide superconductors

    DOE Patents [OSTI]

    Li, Qi (Marlborough, MA); Thompson, Elliott D. (Coventry, RI); Riley, Jr., Gilbert N. (Marlborough, MA); Hellstrom, Eric E. (Madison, WI); Larbalestier, David C. (Madison, WI); DeMoranville, Kenneth L. (Jefferson, MA); Parrell, Jeffrey A. (Roselle Park, NJ); Reeves, Jodi L. (Madison, WI)

    2003-04-29T23:59:59.000Z

    A method of making an oxide superconductor article includes subjecting an oxide superconductor precursor to a texturing operation to orient grains of the oxide superconductor precursor to obtain a highly textured precursor; and converting the textured oxide superconducting precursor into an oxide superconductor, while simultaneously applying a force to the precursor which at least matches the expansion force experienced by the precursor during phase conversion to the oxide superconductor. The density and the degree of texture of the oxide superconductor precursor are retained during phase conversion. The constraining force may be applied isostatically.

  19. Energy conversion device with support member having pore channels

    DOE Patents [OSTI]

    Routkevitch, Dmitri [Longmont, CO; Wind, Rikard A [Johnstown, CO

    2014-01-07T23:59:59.000Z

    Energy devices such as energy conversion devices and energy storage devices and methods for the manufacture of such devices. The devices include a support member having an array of pore channels having a small average pore channel diameter and having a pore channel length. Material layers that may include energy conversion materials and conductive materials are coaxially disposed within the pore channels to form material rods having a relatively small cross-section and a relatively long length. By varying the structure of the materials in the pore channels, various energy devices can be fabricated, such as photovoltaic (PV) devices, radiation detectors, capacitors, batteries and the like.

  20. Positron Emission Tomography (PET)

    DOE R&D Accomplishments [OSTI]

    Welch, M. J.

    1990-01-00T23:59:59.000Z

    Positron emission tomography (PET) assesses biochemical processes in the living subject, producing images of function rather than form. Using PET, physicians are able to obtain not the anatomical information provided by other medical imaging techniques, but pictures of physiological activity. In metaphoric terms, traditional imaging methods supply a map of the body's roadways, its, anatomy; PET shows the traffic along those paths, its biochemistry. This document discusses the principles of PET, the radiopharmaceuticals in PET, PET research, clinical applications of PET, the cost of PET, training of individuals for PET, the role of the United States Department of Energy in PET, and the futures of PET.

  1. Acoustic emission intrusion detector

    DOE Patents [OSTI]

    Carver, Donald W. (Knoxville, TN); Whittaker, Jerry W. (Knoxville, TN)

    1980-01-01T23:59:59.000Z

    An intrusion detector is provided for detecting a forcible entry into a secured structure while minimizing false alarms. The detector uses a piezoelectric crystal transducer to sense acoustic emissions. The transducer output is amplified by a selectable gain amplifier to control the sensitivity. The rectified output of the amplifier is applied to a Schmitt trigger circuit having a preselected threshold level to provide amplitude discrimination. Timing circuitry is provided which is activated by successive pulses from the Schmitt trigger which lie within a selected time frame for frequency discrimination. Detected signals having proper amplitude and frequency trigger an alarm within the first complete cycle time of a detected acoustical disturbance signal.

  2. Applying guidance for methane emission estimation for landfills

    SciTech Connect (OSTI)

    Scharff, Heijo [NV Afvalzorg, Postbus 2, 1566 ZG Assendelft (Netherlands)]. E-mail: h.scharff@afvalzorg.nl; Jacobs, Joeri [NV Afvalzorg, Postbus 2, 1566 ZG Assendelft (Netherlands)]. E-mail: j.jacobs@afvalzorg.nl

    2006-07-01T23:59:59.000Z

    Quantification of methane emission from landfills is important to evaluate measures for reduction of greenhouse gas emissions. Both the United Nations and the European Union have adopted protocols to ensure quantification of methane emission from individual landfills. The purpose of these protocols is to disclose emission data to regulators and the general public. Criteria such as timeliness, completeness, certainty, comparability, consistency and transparency are set for inclusion of emission data in a publicly accessible database. All methods given as guidance to landfill operators to estimate landfill methane emissions are based on models. In this paper the consequences of applying six different models for estimates of three landfills are explored. It is not the intention of this paper to criticise or validate models. The modelling results are compared with whole site methane emission measurements. A huge difference in results is observed. This raises doubts about the accuracy of the models. It also indicates that at least some of the criteria previously mentioned are not met for the tools currently available to estimate methane emissions from individual landfills. This will inevitably lead to compiling and comparing data with an incomparable origin. Harmonisation of models is recommended. This may not necessarily reduce uncertainty, but it will at least result in comparable, consistent and transparent data.

  3. The transition from operational availability to mission

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    THALES The transition from operational availability to mission availability Case study Unclassified The transition from operational availability to mission availability Case Study I Preface The results of my from operational availability to mission availability J.L. Schmal Management summary Thales is planning

  4. High-energy Emission Processes in M 87

    E-Print Network [OSTI]

    de Jong, S; Soldi, S; Tramacere, A; Gros, A

    2015-01-01T23:59:59.000Z

    We study the contribution of thermal and non-thermal processes to the inverse Compton emission of the radio galaxy M 87 by modelling its broad-band emission. Through this we aim to derive insight into where within the AGN the X-ray, gamma-ray, and VHE emission is produced. We have analysed all available INTEGRAL IBIS/ISGRI data on M 87, spanning almost 10 years, to set an upper limit to the average hard X-ray flux of $f(20 - 60 \\rm \\, keV) energy distri...

  5. Direct conversion nuclear reactor space power systems

    SciTech Connect (OSTI)

    Britt, E.J.; Fitzpatrick, G.O.

    1982-08-01T23:59:59.000Z

    This paper presents the results of a study of space nuclear reactor power systems using either thermoelectric or thermionic energy converters. An in-core reactor design and two heat pipe cooled out-of-core reactor designs were considered. One of the out-of-core cases utilized, long heat pipes (LHP) directly coupled to the energy converter. The second utilized a larger number of smaller heat pipes (mini-pipe) radiatively coupled to the energy converter. In all cases the entire system, including power conditioning, was constrained to be launched in a single shuttle flight. Assuming presently available performance, both the LHP thermoelectric system and minipipe thermionic system, designed to produce 100 kWe for seven years, would have a specific mass near 22kg/kWe. The specific mass of the thermionic minipipe system designed for a one year mission is 165 kg/kWe due to less fuel swelling. Shuttle imposed growth limits are near 300 kWe and 1.2 MWe for the thermoelectric and thermionic systems, respectively. Converter performance improvements could double this potential, and over 10 MWe may be possible for very short missions.

  6. Infrared Emission from AGN

    E-Print Network [OSTI]

    D. B. Sanders

    1999-03-30T23:59:59.000Z

    Infrared observations of complete samples of active galactic nuclei (AGN) have shown that a substantial fraction of their bolometric luminosity is emitted at wavelengths ~8-1000microns. In radio-loud and Blazar-like objects much of this emission appears to be direct non-thermal synchrotron radiation. However, in the much larger numbers of radio-quiet AGN it is now clear that thermal dust emission is responsible for the bulk of radiation from the near-infrared through submillimeter wavelengths. Luminous infrared-selected AGN are often surrounded by powerful nuclear starbursts, both of which appear to be fueled by enormous supplies of molecular gas and dust funneled into the nuclear region during the strong interaction/merger of gas rich disks. All-sky surveys in the infrared show that luminous infrared AGN are at least as numerous as optically-selected AGN of comparable bolometric luminosity, suggesting that AGN may spend a substantial fraction of their lifetime in a dust-enshrouded phase. The space density of luminous infrared AGN at high redshift may be sufficient to account for much of the X-Ray background, and for a substantial fraction of the far-infrared background as well. These objects plausibly represent a major epoch in the formation of spheroids and massive black holes (MBH).

  7. Elastic emission polishing

    SciTech Connect (OSTI)

    Loewenthal, M.; Loseke, K.; Dow, T.A.; Scattergood, R.O.

    1988-12-01T23:59:59.000Z

    Elastic emission polishing, also called elastic emission machining (EEM), is a process where a stream of abrasive slurry is used to remove material from a substrate and produce damage free surfaces with controlled surface form. It is a noncontacting method utilizing a thick elasto-hydrodynamic film formed between a soft rotating ball and the workpiece to control the flow of the abrasive. An apparatus was built in the Center, which consists of a stationary spindle, a two-axis table for the workpiece, and a pump to circulate the working fluid. The process is controlled by a programmable computer numerical controller (CNC), which presently can operate the spindle speed and movement of the workpiece in one axis only. This apparatus has been used to determine material removal rates on different material samples as a function of time, utilizing zirconium oxide (ZrO{sub 2}) particles suspended in distilled water as the working fluid. By continuing a study of removal rates the process should become predictable, and thus create a new, effective, yet simple tool for ultra-precision mechanical machining of surfaces.

  8. Nano Catalysts for Diesel Engine Emission Remediation

    SciTech Connect (OSTI)

    Narula, Chaitanya Kumar [ORNL; Yang, Xiaofan [ORNL; Debusk, Melanie Moses [ORNL; Mullins, David R [ORNL; Mahurin, Shannon Mark [ORNL; Wu, Zili [ORNL

    2012-06-01T23:59:59.000Z

    The objective of this project was to develop durable zeolite nanocatalysts with broader operating temperature windows to treat diesel engine emissions to enable diesel engine based equipment and vehicles to meet future regulatory requirements. A second objective was to improve hydrothermal durability of zeolite catalysts to at least 675 C. The results presented in this report show that we have successfully achieved both objectives. Since it is accepted that the first step in NO{sub x} conversion under SCR (selective catalytic reduction) conditions involves NO oxidation to NO{sub 2}, we reasoned that catalyst modification that can enhance NO oxidation at low-temperatures should facilitate NO{sub x} reduction at low temperatures. Considering that Cu-ZSM-5 is a more efficient catalyst than Fe-ZSM-5 at low-temperature, we chose to modify Cu-ZSM-5. It is important to point out that the poor low-temperature efficiency of Fe-ZSM-5 has been shown to be due to selective absorption of NH{sub 3} at low-temperatures rather than poor NO oxidation activity. In view of this, we also reasoned that an increased electron density on copper in Cu-ZSM-5 would inhibit any bonding with NH{sub 3} at low-temperatures. In addition to modified Cu-ZSM-5, we synthesized a series of new heterobimetallic zeolites, by incorporating a secondary metal cation M (Sc{sup 3+}, Fe{sup 3+}, In{sup 3+}, and La{sup 3+}) in Cu exchanged ZSM-5, zeolite-beta, and SSZ-13 zeolites under carefully controlled experimental conditions. Characterization by diffuse-reflectance ultra-violet-visible spectroscopy (UV-Vis), X-ray powder diffraction (XRD), extended X-ray absorption fine structure spectroscopy (EXAFS) and electron paramagnetic resonance spectroscopy (EPR) does not permit conclusive structural determination but supports the proposal that M{sup 3+} has been incorporated in the vicinity of Cu(II). The protocols for degreening catalysts, testing under various operating conditions, and accelerated aging conditions were provided by our collaborators at John Deere Power Systems. Among various zeolites reported here, CuFe-SSZ-13 offers the best NO{sub x} conversion activity in 150-650 C range and is hydrothermally stable when tested under accelerated aging conditions. It is important to note that Cu-SSZ-13 is now a commercial catalyst for NO{sub x} treatment on diesel passenger vehicles. Thus, our catalyst performs better than the commercial catalyst under fast SCR conditions. We initially focused on fast SCR tests to enable us to screen catalysts rapidly. Only the catalysts that exhibit high NO{sub x} conversion at low temperatures are selected for screening under varying NO{sub 2}:NO{sub x} ratio. The detailed tests of CuFe-SSZ-13 show that CuFe-SSZ-13 is more effective than commercial Cu-SSZ-13 even at NO{sub 2}:NO{sub x} ratio of 0.1. The mechanistic studies, employing stop-flow diffuse reflectance FTIR spectroscopy (DRIFTS), suggest that high concentration of NO{sup +}, generated by heterobimetallic zeolites, is probably responsible for their superior low temperature NO{sub x} activity. The results described in this report clearly show that we have successfully completed the first step in a new emission treatment catalyst which is synthesis and laboratory testing employing simulated exhaust. The next step in the catalyst development is engine testing. Efforts are in progress to obtain follow-on funding to carry out scale-up and engine testing to facilitate commercialization of this technology.

  9. Stress and Cognitive Load in Multimodal Conversational Interactions

    E-Print Network [OSTI]

    Nijholt, Anton

    ) and time pressure. Heart rate variability (HRV) and galvanic skin response (GSR) as well as subjective with a multimodal conversational system for crisis management. 2 Experiment Design A first system simulation was build using the CSLU toolkit1 . The simulation is meant to serve as a support tool for crisis managers

  10. Power Conversion Efficiency Characterization and Optimization for Smartphones

    E-Print Network [OSTI]

    Pedram, Massoud

    Power Conversion Efficiency Characterization and Optimization for Smartphones Woojoo Lee Yanzhi charging operations even with a 2000 mAh battery. This is in spite of many power manage- ment techniques waste a significant amount of the battery's stored energy during power con- version from the 3.7V output

  11. Instrumental Borders of Gender and Religious Conversion in the Balkans*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Instrumental Borders of Gender and Religious Conversion in the Balkans* ALBERT DOJA ABSTRACT In this paper I look at religious identifications and affiliations in the Balkans as instrumental political else, the Balkans is a place of passages, encounters and contacts, formidable in its capability

  12. Wind Energy Conversion Systems Fault Diagnosis Using Wavelet Analysis

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Wind Energy Conversion Systems Fault Diagnosis Using Wavelet Analysis Elie Al-Ahmar1,2 , Mohamed El, induction generator, Discrete Wavelet Transform (DWT), failure diagnosis. I. Introduction Wind energy the condition of induction machines. Fig. 1. Worldwide growth of wind energy installed capacity [1]. 1 E. Al

  13. What is Supercomputing? A Conversation with Kathy Yelick

    ScienceCinema (OSTI)

    Kathy Yelick

    2013-06-24T23:59:59.000Z

    In this highlight video, Jeff Miller, head of Public Affairs, sat down in conversation with Kathy Yelick, Associate Berkeley Lab Director, Computing Sciences, in the second of a series of "powerpoint-free" talks on July 18th 2012, at Berkeley Lab.

  14. Tidal Conversion at a Submarine Ridge FRANOIS PTRLIS

    E-Print Network [OSTI]

    Young, William R.

    that control the tidally powered radiation of in- ternal gravity waves (the "tidal conversion") from received 30 July 2003, in final form 20 January 2004) ABSTRACT The radiative flux of internal wave energy tide over submarine topography is a main source of the mechanical energy required to power the internal

  15. Catalyst and process development for synthesis gas conversion to isobutylene

    SciTech Connect (OSTI)

    Anthony, R.G.; Akgerman, A.

    1992-05-26T23:59:59.000Z

    The objectives of this project are to develop a new catalyst, the kinetics for this catalyst, reactor models for trickle bed, slurry and fixed bed, and simulate the performance of fixed bed trickle flow reactors, slurry flow reactors, and fixed bed gas phase reactors for conversion of a hydrogen lean synthesis gas to isobutylene.

  16. CRAD, Training- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of the Training Program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  17. Modal conversion with artificial materials for photonic-crystal waveguides

    E-Print Network [OSTI]

    Boyer, Edmond

    Optics (Van Nostrand Reinhold, New York, 1972). 3. Y. Xu, R. K. Lee and A. Yariv, "Adiabatic coupling, France Philippe.lalanne@iota.u-psud.fr A. Talneau Laboratoire de Photonique et de Nanostructures, Centre and adiabatic modal conversion," Appl. Phys. Lett. 78, 1466-69 (2001). 5. A. Mekis and J.D. Joannopoulos

  18. Computational study of power conversion and luminous efficiency performance for

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Computational study of power conversion and luminous efficiency performance for semiconductor) and luminous efficiency (LE) performance levels of high photometric quality white LEDs integrated with quantum dots (QDs) achieving an averaged color rendering index of 90 (with R9 at least 70), a luminous efficacy

  19. Conversion and Operation of CAST as a massive axion detector

    E-Print Network [OSTI]

    Elias, Nuno; Bordalo, Paula

    2010-01-01T23:59:59.000Z

    The axion was postulated after an elegant solution proposed by R. Peccei and H. Quinn to solve the strong CP problem of Quantum Chromodynamics. The CAST experiment searches for axions created in the core of the Sun. It uses an LHC superconducting prototype magnet to trigger the axion conversion into detectable X-ray photons. During its First Phase, with the magnetic field region kept under vacuum, CAST searched with high sensitivity for axion masses up to 0.02 eV/c2, for higher values the conversion coherence is lost. This thesis reflects the work that allows CAST to extend its search up to axion masses of 1 eV/c2. To restore the lost coherence a buffer gas is introduced in the magnet cold bores, such that the photon arising from the Primakoff conversion acquires an effective mass. The axion mass can be effectively scanned by fine tuning the gas density. The conversion of the experiment required the study, design and construction of a complex gas handling system to deal with a rare helium isotope, 3He. It rep...

  20. Compact anhydrous HCl to aqueous HCl conversion system

    DOE Patents [OSTI]

    Grossman, M.W.; Speer, R.

    1993-06-01T23:59:59.000Z

    The present invention is directed to an inexpensive and compact apparatus adapted for use with a [sup 196]Hg isotope separation process and the conversion of anhydrous HCl to aqueous HCl without the use of air flow to carry the HCl vapor into the converter system.

  1. Compact anhydrous HCl to aqueous HCl conversion system

    SciTech Connect (OSTI)

    Grossman, Mark W. (Belmont, MA); Speer, Richard (S. Hamilton, MA)

    1993-01-01T23:59:59.000Z

    The present invention is directed to an inexpensive and compact apparatus adapted for use with a .sup.196 Hg isotope separation process and the conversion of anhydrous HCl to aqueous HCl without the use of air flow to carry the HCl vapor into the converter system.

  2. Thermochemical conversion of waste materials to valuable products

    SciTech Connect (OSTI)

    Saraf, S. [Engineering Technologies, Lombard, IL (United States)

    1997-12-31T23:59:59.000Z

    The potential offered by a large variety of solid and liquid wastes for generating value added products is widely recognized. Extensive research and development has focused on developing technologies to recover energy and valuable products from waste materials. These treatment technologies include use of waste materials for direct combustion, upgrading the waste materials into useful fuel such as fuel gas or fuel oil, and conversion of waste materials into higher value products for the chemical industry. Thermal treatment in aerobic (with oxygen) conditions or direct combustion of waste materials in most cases results in generating air pollution and thereby requiring installation of expensive control devices. Thermochemical conversion in aerobic (without oxygen) conditions, referred to as thermal decomposition (destructive distillation) results in formation of usable liquid, solid, and gaseous products. Thermochemical conversion includes gasification, liquefaction, and thermal decomposition (pyrolysis). Each thermochemical conversion process yields a different range of products and this paper will discuss thermal decomposition in detail. This paper will also present results of a case study for recovering value added products, in the form of a liquid, solid, and gas, from thermal decomposition of waste oil and scrap tires. The product has a high concentration of benzene, xylene, and toluene. The solid product has significant amounts of carbon black and can be used as an asphalt modifier for road construction. The gas product is primarily composed of methane and is used for heating the reactor.

  3. Wireless Sensor Network Energy Conversation Nathan A. Menhorn

    E-Print Network [OSTI]

    Wireless Sensor Network Energy Conversation Techniques Nathan A. Menhorn October 20, 2005 #12;Contents 1 Introduction to Wireless Sensor Networks 3 1.1 General Overview A Wireless Sensor Network Glossary 68 2 #12;Chapter 1 Introduction to Wireless Sensor Networks 1.1 General

  4. Photon-Axion conversions in transversely inhomogeneous magnetic fields

    E-Print Network [OSTI]

    Javier Redondo

    2010-03-01T23:59:59.000Z

    We compute the photon-axion conversion probability in an external magnetic field with a strong transverse gradient in the eikonal approximation for plane waves. We find it typically smaller than a comparable uniform case. Some insights into the phenomenon of photon-axion splitting are given.

  5. Biological Conversion of Sugars to Hydrocarbons Technology Pathway

    SciTech Connect (OSTI)

    Davis, R.; Biddy, M.; Tan, E.; Tao, L.; Jones, S.

    2013-03-01T23:59:59.000Z

    This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot-scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

  6. A New Optimum Jitter Protection for Conversational VoIP

    E-Print Network [OSTI]

    Kabal, Peter

    A New Optimum Jitter Protection for Conversational VoIP Qipeng Gong, Peter Kabal Electrical.kabal@mcgill.ca Abstract--In Voice-over-IP, jitter buffers are introduced at both sides of the sender and the receiver to compensate for delay jitters. A longer buffer reduces the possibility of packet loss and packet disorder

  7. Conversations for a smarter planet: A planet of smarter cities.

    E-Print Network [OSTI]

    a real impact today. But they are just the first step toward a true smart city. For a glimpse of whatConversations for a smarter planet: A planet of smarter cities. © Copyright IBM Australia Limited.ibm.com/legal/copytrade.shtml IBMCCA1043_Cities_R In 1901, only 36% of Australia's population lived in metropolitan areas. Now

  8. Bridging the Divide in Democratic Engagement: Studying Conversation Patterns in

    E-Print Network [OSTI]

    Ramakrishnan, Naren

    , where there is a concentration of poverty, are both less likely to exhibit these democratic behaviors compare informal conversational activity that takes place online in communities of high and low poverty of i-Neighbors by poverty level, and apply our algorithm to six neighborhoods (three economically

  9. CRAD, Management- Y-12 Enriched Uranium Operations Oxide Conversion Facility

    Broader source: Energy.gov [DOE]

    A section of Appendix C to DOE G 226.1-2 "Federal Line Management Oversight of Department of Energy Nuclear Facilities." Consists of Criteria Review and Approach Documents (CRADs) used for a January 2005 assessment of Management program at the Y-12 - Enriched Uranium Operations Oxide Conversion Facility.

  10. Surface Tension Mediated Conversion of Light to Work David Okawa,,

    E-Print Network [OSTI]

    Zettl, Alex

    of intermediates. Considerable effort has been devoted to improving energy collection, storage, and utilization;2Surface Tension Mediated Conversion of Light to Work David Okawa,, Stefan J. Pastine, Alex Zettl,,§ and Jean M. J. Fre´chet*,,§ College of Chemistry and Department of Physics, UniVersity of California

  11. Energy Conversion and Storage Program. 1990 annual report

    SciTech Connect (OSTI)

    Cairns, E.J.

    1992-03-01T23:59:59.000Z

    The Energy Conversion and Storage Program applies chemistry and materials science principles to solve problems in (1) production of new synthetic fuels, (2) development of high-performance rechargeable batteries and fuel cells, (3) development of advanced thermochemical processes for energy conversion, (4) characterization of complex chemical processes, and (5) application of novel materials for energy conversion and transmission. Projects focus on transport-process principles, chemical kinetics, thermodynamics, separation processes, organic and physical chemistry, novel materials, and advanced methods of analysis. Electrochemistry research aims to develop advanced power systems for electric vehicle and stationary energy storage applications. Topics include identification of new electrochemical couples for advanced rechargeable batteries, improvements in battery and fuel-cell materials, and the establishment of engineering principles applicable to electrochemical energy storage and conversion. Chemical Applications research includes topics such as separations, catalysis, fuels, and chemical analyses. Included in this program area are projects to develop improved, energy-efficient methods for processing waste streams from synfuel plants and coal gasifiers. Other research projects seek to identify and characterize the constituents of liquid fuel-system streams and to devise energy-efficient means for their separation. Materials Applications research includes the evaluation of the properties of advanced materials, as well as the development of novel preparation techniques. For example, the use of advanced techniques, such as sputtering and laser ablation, are being used to produce high-temperature superconducting films.

  12. Indoor Dose Conversion Coefficients for Radon Progeny for Different

    E-Print Network [OSTI]

    Yu, K.N.

    Indoor Dose Conversion Coefficients for Radon Progeny for Different Ambient Environments K . N . Y Inhaled progeny of 222Rn (radon progeny) are the most important source of irradiation of the human-, urban-, and marine-influenced aerosols. The ASDs of attached radon progeny for all three studied ambient

  13. Proceedings of the 27th intersociety energy conversion engineering conference

    SciTech Connect (OSTI)

    Not Available

    1992-01-01T23:59:59.000Z

    This book contains the proceedings of the 27th Intersociety Energy Conversion Engineering Conference. Topics included: Stirling Cycle Analysis; Stirling Cycle Models; Stirling Refrigerators/Heat Pumps and Cryocoolers; Domestic Policy; Efficiency/Conservation; Stirling Solar Terrestrial; Stirling Component Technology; Environmental Impacts; Renewable Resource Systems; Stirling Power Generation; Stirling Heat Transport System Technology; and Stirling Cycle Loss Understanding.

  14. Energy conversion of fully random thermal relaxation times Franois Barriquand

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Energy conversion of fully random thermal relaxation times François Barriquand proba5050@hotmail.com ABSTRACT. Thermodynamic random processes in thermal systems are generally associated with one or several relaxation times, the inverse of which are formally homogeneous with energy. Here, we show in a precise way

  15. The Natural Gas Vehicle Challenge `92: Exhaust emissions testing and results

    SciTech Connect (OSTI)

    Rimkus, W.A.; Larsen, R.P. [Argonne National Lab., IL (United States); Zammit, M.G. [Johnson Matthey, Wayne, PA (United States); Davies, J.G.; Salmon, G.S. [General Motors of Canada Ltd., Toronto, ON (Canada); Bruetsch, R.I. [US Environmental Protection Agency (United States)

    1992-11-01T23:59:59.000Z

    The Natural Gas Vehicle (NGV) Challenge `92, was organized by Argonne National Laboratory. The main sponsors were the US Department of Energy the Energy, Mines, and Resources -- Canada, and the Society of Automotive Engineers. It resulted in 20 varied approaches to the conversion of a gasoline-fueled, spark-ignited, internal combustion engine to dedicated natural gas use. Starting with a GMC Sierra 2500 pickup truck donated by General Motors, teams of college and university student engineers worked to optimize Chevrolet V-8 engines operating on natural gas for improved emissions, fuel economy, performance, and advanced design features. This paper focuses on the results of the emission event, and compares engine mechanical configurations, engine management systems, catalyst configurations and locations, and approaches to fuel control and the relationship of these parameters to engine. out and tailpipe emissions of regulated exhaust constituents. Nine of the student modified trucks passed the current levels of exhaust emission standards, and some exceeded the strictest future emissions standards envisioned by the US Environmental Protection Agency. Factors contributing to good emissions control using natural gas are summarized, and observations concerning necessary components of a successful emissions control strategy are presented.

  16. Fuel Mix and Emissions Disclosure

    Broader source: Energy.gov [DOE]

    Electricity suppliers and electricity companies must also provide a fuel mix report to customers twice annually, within the June and December billing cycles. Emissions information must be disclos...

  17. Emission Impacts of Electric Vehicles

    E-Print Network [OSTI]

    Wang, Quanlu; DeLuchi, Mark A.; Sperling, Daniel

    1990-01-01T23:59:59.000Z

    California, 1982. 26. R. E. Simkins, "Evaporative runningevapora- tive emissions. Simkins concluded that runningis consis- tent with Simkins’ result. Weuse EPA’sestimates

  18. Fuel Mix and Emissions Disclosure

    Broader source: Energy.gov [DOE]

    Maryland’s 1999 electric utility restructuring legislation requires all electric companies and electricity suppliers to provide customers with details regarding the fuel mix and emissions of...

  19. Fuel Mix and Emissions Disclosure

    Broader source: Energy.gov [DOE]

    Ohio's 1999 electric industry restructuring law requires the state's electricity suppliers to disclose details regarding their fuel mix and emissions to customers. Electric utilities and...

  20. Fuel Mix and Emissions Disclosure

    Broader source: Energy.gov [DOE]

    Virginia’s 1999 electric industry restructuring law requires the state's electricity providers to disclose -- "to the extent feasible" -- fuel mix and emissions data regarding electric generation....