National Library of Energy BETA

Sample records for driving cycle range

  1. NREL: Transportation Research - DRIVE: Drive-Cycle Rapid Investigation,

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

    Visualization, and Evaluation Analysis Tool DRIVE: Drive-Cycle Rapid Investigation, Visualization, and Evaluation Analysis Tool The Drive-Cycle Rapid Investigation, Visualization, and Evaluation (DRIVE) analysis tool produces representative, testable drive cycles at record speed from large amounts of vehicle data gathered via onboard logging devices. Developed by NREL, DRIVE uses GPS and controller area network data to characterize vehicle operation and produce custom vehicle drive cycles

  2. Off-Cycle Benchmarking of PHEVs; Wide Range of Temperatures...

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

    Off-Cycle Benchmarking of PHEVs; Wide Range of Temperatures and Aggressive Driving Cycles Off-Cycle Benchmarking of PHEVs; Wide Range of Temperatures and Aggressive Driving ...

  3. Effect of B20 and Low Aromatic Diesel on Transit Bus NOx Emissions Over Driving Cycles with a Range of Kinetic Intensity

    SciTech Connect (OSTI)

    Lammert, M. P.; McCormick, R. L.; Sindler, P.; Williams, A.

    2012-10-01

    Oxides of nitrogen (NOx) emissions for transit buses for up to five different fuels and three standard transit duty cycles were compared to establish whether there is a real-world biodiesel NOx increase for transit bus duty cycles and engine calibrations. Six buses representing the majority of the current national transit fleet and including hybrid and selective catalyst reduction systems were tested on a heavy-duty chassis dynamometer with certification diesel, certification B20 blend, low aromatic (California Air Resources Board) diesel, low aromatic B20 blend, and B100 fuels over the Manhattan, Orange County and UDDS test cycles. Engine emissions certification level had the dominant effect on NOx; kinetic intensity was the secondary driving factor. The biodiesel effect on NOx emissions was not statistically significant for most buses and duty cycles for blends with certification diesel, except for a 2008 model year bus. CARB fuel had many more instances of a statistically significant effect of reducing NOx. SCR systems proved effective at reducing NOx to near the detection limit on all duty cycles and fuels, including B100. While offering a fuel economy benefit, a hybrid system significantly increased NOx emissions over a same year bus with a conventional drivetrain and the same engine.

  4. Light-Duty Reactivity Controlled Compression Ignition Drive Cycle...

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

    Light-Duty Reactivity Controlled Compression Ignition Drive Cycle Fuel Economy and Emissions Estimates Light-Duty Reactivity Controlled Compression Ignition Drive Cycle Fuel ...

  5. Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling...

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

    Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion 2009 DOE Hydrogen Program ...

  6. Defining Real World Drive Cycles to Support APRF Technology Evaluation...

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

    Real World Drive Cycles to Support APRF Technology Evaluations Defining Real World Drive Cycles to Support APRF Technology Evaluations 2012 DOE Hydrogen and Fuel Cells Program and...

  7. Off-Cycle Benchmarking of PHEVs; Wide Range of Temperatures and

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

    Aggressive Driving Cycles | Department of Energy Off-Cycle Benchmarking of PHEVs; Wide Range of Temperatures and Aggressive Driving Cycles Off-Cycle Benchmarking of PHEVs; Wide Range of Temperatures and Aggressive Driving Cycles 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. PDF icon vss_04_carlson.pdf More Documents & Publications AVTA … PHEV Demonstrations and Testing Advanced Vehicle

  8. DRIVE Analysis Tool Generates Custom Vehicle Drive Cycles Based on Real-World Data (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-04-01

    This fact sheet from the National Renewable Energy Laboratory describes the Drive-Cycle Rapid Investigation, Visualization, and Evaluation (DRIVE) analysis tool, which uses GPS and controller area network data to characterize vehicle operation and produce custom vehicle drive cycles, analyzing thousands of hours of data in a matter of minutes.

  9. Fact #797: September 16, 2013 Driving Ranges for Electric Vehicles |

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

    Department of Energy 7: September 16, 2013 Driving Ranges for Electric Vehicles Fact #797: September 16, 2013 Driving Ranges for Electric Vehicles The figure below shows the Environmental Protection Agency (EPA) driving ranges for electric vehicles (EVs) offered for the 2013 model year (MY). The Tesla Model S has the longest range of any EV offered, ranging from 139 miles for the 40 kilowatt-hour (kW-hr) battery pack model to 265 miles for the 85 kW-hr battery pack model. Battery capacity is

  10. NYC Taxi Drive Cycle Development and Simulation Study | Department of

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

    Energy NYC Taxi Drive Cycle Development and Simulation Study NYC Taxi Drive Cycle Development and Simulation Study 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon vss073_jones_2012_o.pdf More Documents & Publications Dynamometer Testing of USPS EV Conversions Vehicle Technologies Office Merit Review 2014: Dynamic Feasibility Study Technical Cost Modeling - Life Cycle Analysis Basis for Program Focus

  11. On the Road to ANG Vehicles with Increased Driving Ranges

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

    On the Road to ANG Vehicles with Increased Driving Ranges On the Road to ANG Vehicles with Increased Driving Ranges Print Thursday, 21 January 2016 16:08 As a cleaner, cheaper, and more globally evenly distributed fuel, natural gas has considerable environmental, economic, and political advantages over petroleum as a source of energy for the transportation sector. But its low energy density at ambient temperature and pressure has posed a severe challenge for onboard fuel storage in cars in the

  12. Defining Real World Drive Cycles to Support APRF Technology Evaluations |

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

    Department of Energy Real World Drive Cycles to Support APRF Technology Evaluations Defining Real World Drive Cycles to Support APRF Technology Evaluations 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon vss091_rask_2012_p.pdf More Documents & Publications Data Collection for Improved Cold Temperature Thermal Modeling Data Collection for Improved Cold Temperature Thermal Modeling and Strategy Development

  13. Comparison of Plug-In Hybrid Electric Vehicle Battery Life Across Geographies and Drive-Cycles

    SciTech Connect (OSTI)

    Smith, K.; Warleywine, M.; Wood, E.; Neubauer, J.; Pesaran, A.

    2012-06-01

    In a laboratory environment, it is cost prohibitive to run automotive battery aging experiments across a wide range of possible ambient environment, drive cycle and charging scenarios. Since worst-case scenarios drive the conservative sizing of electric-drive vehicle batteries, it is useful to understand how and why those scenarios arise and what design or control actions might be taken to mitigate them. In an effort to explore this problem, this paper applies a semi-empirical life model of the graphite/nickel-cobalt-aluminum lithium-ion chemistry to investigate impacts of geographic environments under storage and simplified cycling conditions. The model is then applied to analyze complex cycling conditions, using battery charge/discharge profiles generated from simulations of PHEV10 and PHEV40 vehicles across 782 single-day driving cycles taken from Texas travel survey data.

  14. Drive Cycle Analysis, Measurement of Emissions and Fuel Consumption of a PHEV School Bus: Preprint

    SciTech Connect (OSTI)

    Barnitt, R.; Gonder, J.

    2011-04-01

    The National Renewable Energy Laboratory (NREL) collected and analyzed real-world school bus drive cycle data and selected similar standard drive cycles for testing on a chassis dynamometer. NREL tested a first-generation plug-in hybrid electric vehicle (PHEV) school bus equipped with a 6.4L engine and an Enova PHEV drive system comprising a 25-kW/80 kW (continuous/peak) motor and a 370-volt lithium ion battery pack. A Bluebird 7.2L conventional school bus was also tested. Both vehicles were tested over three different drive cycles to capture a range of driving activity. PHEV fuel savings in charge-depleting (CD) mode ranged from slightly more than 30% to a little over 50%. However, the larger fuel savings lasted over a shorter driving distance, as the fully charged PHEV school bus would initially operate in CD mode for some distance, then in a transitional mode, and finally in a charge-sustaining (CS) mode for continued driving. The test results indicate that a PHEV school bus can achieve significant fuel savings during CD operation relative to a conventional bus. In CS mode, the tested bus showed small fuel savings and somewhat higher nitrogen oxide (NOx) emissions than the baseline comparison bus.

  15. Hydraulic Hybrid and Conventional Parcel Delivery Vehicles' Measured Laboratory Fuel Economy on Targeted Drive Cycles

    SciTech Connect (OSTI)

    Lammert, M. P.; Burton, J.; Sindler, P.; Duran, A.

    2014-10-01

    This research project compares laboratory-measured fuel economy of a medium-duty diesel powered hydraulic hybrid vehicle drivetrain to both a conventional diesel drivetrain and a conventional gasoline drivetrain in a typical commercial parcel delivery application. Vehicles in this study included a model year 2012 Freightliner P100H hybrid compared to a 2012 conventional gasoline P100 and a 2012 conventional diesel parcel delivery van of similar specifications. Drive cycle analysis of 484 days of hybrid parcel delivery van commercial operation from multiple vehicles was used to select three standard laboratory drive cycles as well as to create a custom representative cycle. These four cycles encompass and bracket the range of real world in-use data observed in Baltimore United Parcel Service operations. The NY Composite cycle, the City Suburban Heavy Vehicle Cycle cycle, and the California Air Resources Board Heavy Heavy-Duty Diesel Truck (HHDDT) cycle as well as a custom Baltimore parcel delivery cycle were tested at the National Renewable Energy Laboratory's Renewable Fuels and Lubricants Laboratory. Fuel consumption was measured and analyzed for all three vehicles. Vehicle laboratory results are compared on the basis of fuel economy. The hydraulic hybrid parcel delivery van demonstrated 19%-52% better fuel economy than the conventional diesel parcel delivery van and 30%-56% better fuel economy than the conventional gasoline parcel delivery van on cycles other than the highway-oriented HHDDT cycle.

  16. Fact #854 January 5, 2015 Driving Ranges for All-Electric Vehicles...

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

    4 January 5, 2015 Driving Ranges for All-Electric Vehicles in Model Year 2014 Vary from 62 to 265 Miles Fact 854 January 5, 2015 Driving Ranges for All-Electric Vehicles in Model...

  17. Evaluation of Range Estimates for Toyota FCHV-adv Under Open Road Driving

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

    Conditions | Department of Energy Range Estimates for Toyota FCHV-adv Under Open Road Driving Conditions Evaluation of Range Estimates for Toyota FCHV-adv Under Open Road Driving Conditions An evaluation to independently and objectively verify driving ranges of >400 miles announced by Toyota for its new advanced Fuel Cell Hybrid Vehicle (FCHV-adv) utilizing 70 MPa compressed hydrogen. PDF icon Evaluation of Range Estimates for Toyota FCHV-adv Under Open Road Driving Conditions More

  18. Response Surface Energy Modeling of an Electric Vehicle over a Reduced Composite Drive Cycle

    SciTech Connect (OSTI)

    Jehlik, Forrest; LaClair, Tim J

    2014-01-01

    Response surface methodology (RSM) techniques were applied to develop a predictive model of electric vehicle (EV) energy consumption over the Environmental Protection Agency's (EPA) standardized drive cycles. The model is based on measurements from a synthetic composite drive cycle. The synthetic drive cycle is a minimized statistical composite of the standardized urban (UDDS), highway (HWFET), and US06 cycles. The composite synthetic drive cycle is 20 minutes in length thereby reducing testing time of the three standard EPA cycles by over 55%. Vehicle speed and acceleration were used as model inputs for a third order least squared regression model predicting vehicle battery power output as a function of the drive cycle. The approach reduced three cycles and 46 minutes of drive time to a single test of 20 minutes. Application of response surface modeling to the synthetic drive cycle is shown to predict energy consumption of the three EPA cycles within 2.6% of the actual measured values. Additionally, the response model may be used to predict energy consumption of any cycle within the speed/acceleration envelope of the synthetic cycle. This technique results in reducing test time, which additionally provides a model that may be used to expand the analysis and understanding of the vehicle under consideration.

  19. Fact #854 January 5, 2015 Driving Ranges for All-Electric Vehicles in Model

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

    Year 2014 Vary from 62 to 265 Miles | Department of Energy 4 January 5, 2015 Driving Ranges for All-Electric Vehicles in Model Year 2014 Vary from 62 to 265 Miles Fact #854 January 5, 2015 Driving Ranges for All-Electric Vehicles in Model Year 2014 Vary from 62 to 265 Miles Driving ranges for all-electric vehicles vary considerably. Based on the official Environmental Protection Agency (EPA) range values reported on window stickers, the Mitsubishi i-MiEV has the shortest range (62 miles)

  20. Fact #798: September 23, 2013 Plug-in Hybrid Vehicle Driving Range |

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

    Department of Energy 8: September 23, 2013 Plug-in Hybrid Vehicle Driving Range Fact #798: September 23, 2013 Plug-in Hybrid Vehicle Driving Range For the 2013 model year (MY) there are four plug-in hybrid electric vehicles (PHEVs) available to consumers. PHEVs offer a limited amount of all-electric driving range that is drawn from a plug and uses a gasoline engine to provide additional range when the battery is depleted. The automakers have taken different approaches to employing this

  1. Optimizing and Diversifying Electric Vehicle Driving Range for U.S. Drivers

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

    Lin, Zhenhong

    2014-08-11

    Properly determining the driving range is critical for accurately predicting the sales and social benefits of battery electric vehicles (BEVs). This study proposes a framework for optimizing the driving range by minimizing the sum of battery price, electricity cost, and range limitation cost referred to as the "range-related cost" as a measurement of range anxiety. The objective function is linked to policy-relevant parameters, including battery cost and price markup, battery utilization, charging infrastructure availability, vehicle efficiency, electricity and gasoline prices, household vehicle ownership, daily driving patterns, discount rate, and perceived vehicle lifetime. Qualitative discussion of the framework and its empiricalmore » application to a sample (N=36664) representing new car drivers in the United States is included. The quantitative results strongly suggest that ranges of less than 100 miles are likely to be more popular in the BEV market for a long period of time. The average optimal range among U.S. drivers is found to be largely inelastic. Still, battery cost reduction significantly drives BEV demand toward longer ranges, whereas improvement in the charging infrastructure is found to significantly drive BEV demand toward shorter ranges. In conclusion, the bias of a single-range assumption and the effects of range optimization and diversification in reducing such biases are both found to be significant.« less

  2. Optimizing and Diversifying Electric Vehicle Driving Range for U.S. Drivers

    SciTech Connect (OSTI)

    Lin, Zhenhong

    2014-01-01

    Properly determining the driving range is critical for accurately predicting the sales and social benefits of battery electric vehicles (BEVs). This study proposes a framework for optimizing the driving range by minimizing the sum of battery price, electricity cost, and range limitation cost referred to as the range-related cost as a measurement of range anxiety. The objective function is linked to policy-relevant parameters, including battery cost and price markup, battery utilization, charging infrastructure availability, vehicle efficiency, electricity and gasoline prices, household vehicle ownership, daily driving patterns, discount rate, and perceived vehicle lifetime. Qualitative discussion of the framework and its empirical application to a sample (N=36,664) representing new car drivers in the United States is included. The quantitative results strongly suggest that ranges of less than 100 miles are likely to be more popular in the BEV market for a long period of time. The average optimal range among U.S. drivers is found to be largely inelastic. Still, battery cost reduction significantly drives BEV demand toward longer ranges, whereas improvement in the charging infrastructure is found to significantly drive BEV demand toward shorter ranges. The bias of a single-range assumption and the effects of range optimization and diversification in reducing such biases are both found to be significant.

  3. Modeling Heavy/Medium-Duty Fuel Consumption Based on Drive Cycle Properties

    SciTech Connect (OSTI)

    Wang, Lijuan; Duran, Adam; Gonder, Jeffrey; Kelly, Kenneth

    2015-10-13

    This paper presents multiple methods for predicting heavy/medium-duty vehicle fuel consumption based on driving cycle information. A polynomial model, a black box artificial neural net model, a polynomial neural network model, and a multivariate adaptive regression splines (MARS) model were developed and verified using data collected from chassis testing performed on a parcel delivery diesel truck operating over the Heavy Heavy-Duty Diesel Truck (HHDDT), City Suburban Heavy Vehicle Cycle (CSHVC), New York Composite Cycle (NYCC), and hydraulic hybrid vehicle (HHV) drive cycles. Each model was trained using one of four drive cycles as a training cycle and the other three as testing cycles. By comparing the training and testing results, a representative training cycle was chosen and used to further tune each method. HHDDT as the training cycle gave the best predictive results, because HHDDT contains a variety of drive characteristics, such as high speed, acceleration, idling, and deceleration. Among the four model approaches, MARS gave the best predictive performance, with an average absolute percent error of -1.84% over the four chassis dynamometer drive cycles. To further evaluate the accuracy of the predictive models, the approaches were first applied to real-world data. MARS outperformed the other three approaches, providing an average absolute percent error of -2.2% of four real-world road segments. The MARS model performance was then compared to HHDDT, CSHVC, NYCC, and HHV drive cycles with the performance from Future Automotive System Technology Simulator (FASTSim). The results indicated that the MARS method achieved a comparative predictive performance with FASTSim.

  4. Evaluating the Impact of Road Grade on Simulated Commercial Vehicle Fuel Economy Using Real-World Drive Cycles

    SciTech Connect (OSTI)

    Lopp, Sean; Wood, Eric; Duran, Adam

    2015-10-13

    Commercial vehicle fuel economy is known to vary significantly with both positive and negative road grade. Medium- and heavy-duty vehicles operating at highway speeds require incrementally larger amounts of energy to pull heavy payloads up inclines as road grade increases. Non-hybrid vehicles are then unable to recapture energy on descent and lose energy through friction braking. While the on-road effects of road grade are well understood, the majority of standard commercial vehicle drive cycles feature no climb or descent requirements. Additionally, existing literature offers a limited number of sources that attempt to estimate the on-road energy implications of road grade in the medium- and heavy-duty space. This study uses real-world commercial vehicle drive cycles from the National Renewable Energy Laboratory's Fleet DNA database to simulate the effects of road grade on fuel economy across a range of vocations, operating conditions, and locations. Drive-cycles are matched with vocation-specific vehicle models and simulated with and without grade. Fuel use due to grade is presented, and variation in fuel consumption due to drive cycle and vehicle characteristics is explored through graphical and statistical comparison. The results of this study suggest that road grade accounts for 1%-9% of fuel use in commercial vehicles on average and up to 40% on select routes.

  5. Short range smectic order driving long range nematic order: Example of cuprates

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

    Markiewicz, R. S.; Lorenzana, J.; Seibold, G.; Bansil, A.

    2016-01-27

    We present a model for describing the combined presence of nematic and ‘smectic’ or stripe-like orders seen in recent scanning tunneling microscopy (STM) experiments on cuprates. The smectic order is treated as an electronic charge density wave with an associated Peierls distortion or a ‘Pomeranchuk wave’. This primary order is restricted to nanoscale domains by disorder effects, while the secondary coupling to strain generates the nematic order with a considerably longer range. Lastly, a variety of experimental results are shown to be consistent with our theoretical predictions.

  6. Socially optimal electric driving range of plug-in hybrid electric vehicles

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

    Kontou, Eleftheria; Yin, Yafeng; Lin, Zhenhong

    2015-07-25

    This study determines the optimal electric driving range of plug-in hybrid electric vehicles (PHEVs) that minimizes the daily cost borne by the society when using this technology. An optimization framework is developed and applied to datasets representing the US market. Results indicate that the optimal range is 16 miles with an average social cost of 3.19 per day when exclusively charging at home, compared to 3.27 per day of driving a conventional vehicle. The optimal range is found to be sensitive to the cost of battery packs and the price of gasoline. When workplace charging is available, the optimal electricmore » driving range surprisingly increases from 16 to 22 miles, as larger batteries would allow drivers to better take advantage of the charging opportunities to achieve longer electrified travel distances, yielding social cost savings. If workplace charging is available, the optimal density is to deploy a workplace charger for every 3.66 vehicles. Moreover, the diversification of the battery size, i.e., introducing a pair and triple of electric driving ranges to the market, could further decrease the average societal cost per PHEV by 7.45% and 11.5% respectively.« less

  7. Socially optimal electric driving range of plug-in hybrid electric vehicles

    SciTech Connect (OSTI)

    Kontou, Eleftheria; Yin, Yafeng; Lin, Zhenhong

    2015-07-25

    This study determines the optimal electric driving range of plug-in hybrid electric vehicles (PHEVs) that minimizes the daily cost borne by the society when using this technology. An optimization framework is developed and applied to datasets representing the US market. Results indicate that the optimal range is 16 miles with an average social cost of 3.19 per day when exclusively charging at home, compared to 3.27 per day of driving a conventional vehicle. The optimal range is found to be sensitive to the cost of battery packs and the price of gasoline. When workplace charging is available, the optimal electric driving range surprisingly increases from 16 to 22 miles, as larger batteries would allow drivers to better take advantage of the charging opportunities to achieve longer electrified travel distances, yielding social cost savings. If workplace charging is available, the optimal density is to deploy a workplace charger for every 3.66 vehicles. Moreover, the diversification of the battery size, i.e., introducing a pair and triple of electric driving ranges to the market, could further decrease the average societal cost per PHEV by 7.45% and 11.5% respectively.

  8. Analysis of Battery Wear and V2G Benefits Using Real-world Drive Cycles and

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

    Ambient Data | Department of Energy of Battery Wear and V2G Benefits Using Real-world Drive Cycles and Ambient Data Analysis of Battery Wear and V2G Benefits Using Real-world Drive Cycles and Ambient Data 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon vss044_barnitt_2011_p.pdf More Documents & Publications AVTA: Vehicle to Grid Power Flow Regulations and Building Codes Review Vehicle Technologies Office Merit

  9. Light-Duty Drive Cycle Simulations of Diesel Engine-Out Exhaust Properties for an RCCI-Enabled Vehicle

    SciTech Connect (OSTI)

    Gao, Zhiming; Curran, Scott; Daw, C Stuart; Wagner, Robert M

    2013-01-01

    In-cylinder blending of gasoline and diesel fuels to achieve low-temperature reactivity controlled compression ignition (RCCI) can reduce NOx and PM emissions while maintaining or improving brake thermal efficiency compared to conventional diesel combustion (CDC). Moreover, the dual-fueling RCCI is able to achieve these benefits by tailoring combustion reactivity over a wider range of engine operation than is possible with a single fuel. However, the currently demonstrated range of stable RCCI combustion just covers a portion of the engine speed-load range required in several light-duty drive cycles. This means that engines must switch from RCCI to CDC when speed and load fall outside of the stable RCCI range. In this study we investigated the impact of RCCI as it has recently been demonstrated on practical engine-out exhaust temperature and emissions by simulating a multi-mode RCCI-enabled vehicle operating over two urban and two highway driving cycles. To implement our simulations, we employed experimental engine maps for a multi-mode RCCI/CDC engine combined with a standard mid-size, automatic transmission, passenger vehicle in the Autonomie vehicle simulation platform. Our results include both detailed transient and cycle-averaged engine exhaust temperature and emissions for each case, and we note the potential implications of the modified exhaust properties on catalytic emissions control and utilization of waste heat recovery on future RCCI-enabled vehicles.

  10. A Statistical Characterization of School Bus Drive Cycles Collected via Onboard Logging Systems

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

    ____________________________________ 2013-01-2400 Published 09/24/2013 doi:10.4271/2013-01-2400 saecomveh.saejournals.org A Statistical Characterization of School Bus Drive Cycles Collected via Onboard Logging Systems Adam Duran and Kevin Walkowicz National Renewable Energy Laboratory ABSTRACT In an effort to characterize the dynamics typical of school bus operation, National Renewable Energy Laboratory (NREL) researchers set out to gather in-use duty cycle data from school bus fleets operating

  11. Large Scale Duty Cycle (LSDC) Project: Tractive Energy Analysis Methodology and Results from Long-Haul Truck Drive Cycle Evaluations

    SciTech Connect (OSTI)

    LaClair, Tim J

    2011-05-01

    This report addresses the approach that will be used in the Large Scale Duty Cycle (LSDC) project to evaluate the fuel savings potential of various truck efficiency technologies. The methods and equations used for performing the tractive energy evaluations are presented and the calculation approach is described. Several representative results for individual duty cycle segments are presented to demonstrate the approach and the significance of this analysis for the project. The report is divided into four sections, including an initial brief overview of the LSDC project and its current status. In the second section of the report, the concepts that form the basis of the analysis are presented through a discussion of basic principles pertaining to tractive energy and the role of tractive energy in relation to other losses on the vehicle. In the third section, the approach used for the analysis is formalized and the equations used in the analysis are presented. In the fourth section, results from the analysis for a set of individual duty cycle measurements are presented and different types of drive cycles are discussed relative to the fuel savings potential that specific technologies could bring if these drive cycles were representative of the use of a given vehicle or trucking application. Additionally, the calculation of vehicle mass from measured torque and speed data is presented and the accuracy of the approach is demonstrated.

  12. Greenhouse gas emission impacts of electric vehicles under varying driving cycles in various counties and US cities

    SciTech Connect (OSTI)

    Wang, M.Q.; Marr, W.W.

    1994-02-10

    Electric vehicles (EVs) can reduce greenhouse gas emissions, relative to emissions from gasoline-fueled vehicles. However, those studies have not considered all aspects that determine greenhouse gas emissions from both gasoline vehicles (GVs) and EVs. Aspects often overlooked include variations in vehicle trip characteristics, inclusion of all greenhouse gases, and vehicle total fuel cycle. In this paper, we estimate greenhouse gas emission reductions for EVs, including these important aspects. We select four US cities (Boston, Chicago, Los Angeles, and Washington, D.C.) and six countries (Australia, France, Japan, Norway, the United Kingdom, and the United States) and analyze greenhouse emission impacts of EVs in each city or country. We also select six driving cycles developed around the world (i.e., the US federal urban driving cycle, the Economic Community of Europe cycle 15, the Japanese 10-mode cycle, the Los Angeles 92 cycle, the New York City cycle, and the Sydney cycle). Note that we have not analyzed EVs in high-speed driving (e.g., highway driving), where the results would be less favorable to EVs; here, EVs are regarded as urban vehicles only. We choose one specific driving cycle for a given city or country and estimate the energy consumption of four-passenger compact electric and gasoline cars in the given city or country. Finally, we estimate total fuel cycle greenhouse gas emissions of both GVs and EVs by accounting for emissions from primary energy recovery, transportation, and processing; energy product transportation; and powerplant and vehicle operations.

  13. Drive Cycle Analysis, Measurement of Emissions and Fuel Consumption of a PHEV School Bus: Preprint

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

    Drive Cycle Analysis, Measurement of Emissions and Fuel Consumption of a PHEV School Bus Preprint Robb Barnitt and Jeff Gonder To be presented at the SAE 2011 World Congress Detroit, Michigan April 12-14, 2011 Conference Paper NREL/CP-5400-50251 April 2011 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain

  14. Statistical Characterization of Medium-Duty Electric Vehicle Drive Cycles; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    Prohaska, R.; Duran, A.; Ragatz, A.; Kelly, K.

    2015-05-03

    With funding from the U.S. Department of Energys Vehicle Technologies Office, the National Renewable Energy Laboratory (NREL) conducts real-world performance evaluations of advanced medium- and heavy-duty fleet vehicles. Evaluation results can help vehicle manufacturers fine-tune their designs and assist fleet managers in selecting fuel-efficient, low-emission vehicles that meet their economic and operational goals. In 2011, NREL launched a large-scale performance evaluation of medium-duty electric vehicles. With support from vehicle manufacturers Smith and Navistar, NREL research focused on characterizing vehicle operation and drive cycles for electric delivery vehicles operating in commercial service across the nation.

  15. Statistical Characterization of Medium-Duty Electric Vehicle Drive Cycles: Preprint

    SciTech Connect (OSTI)

    Prohaska, R.; Duran, A.; Ragatz, A.; Kelly, K.

    2015-05-01

    In an effort to help commercialize technologies for electric vehicles (EVs) through deployment and demonstration projects, the U.S. Department of Energy’s (DOE's) American Recovery and Reinvestment Act (ARRA) provided funding to participating U.S. companies to cover part of the cost of purchasing new EVs. Within the medium- and heavy-duty commercial vehicle segment, both Smith Electric Newton and and Navistar eStar vehicles qualified for such funding opportunities. In an effort to evaluate the performance characteristics of the new technologies deployed in these vehicles operating under real world conditions, data from Smith Electric and Navistar medium-duty EVs were collected, compiled, and analyzed by the National Renewable Energy Laboratory's (NREL) Fleet Test and Evaluation team over a period of 3 years. More than 430 Smith Newton EVs have provided data representing more than 150,000 days of operation. Similarly, data have been collected from more than 100 Navistar eStar EVs, resulting in a comparative total of more than 16,000 operating days. Combined, NREL has analyzed more than 6 million kilometers of driving and 4 million hours of charging data collected from commercially operating medium-duty electric vehicles in various configurations. In this paper, extensive duty-cycle statistical analyses are performed to examine and characterize common vehicle dynamics trends and relationships based on in-use field data. The results of these analyses statistically define the vehicle dynamic and kinematic requirements for each vehicle, aiding in the selection of representative chassis dynamometer test cycles and the development of custom drive cycles that emulate daily operation. In this paper, the methodology and accompanying results of the duty-cycle statistical analysis are presented and discussed. Results are presented in both graphical and tabular formats illustrating a number of key relationships between parameters observed within the data set that relate to medium duty EVs.

  16. Comparison of Battery Life Across Real-World Automotive Drive-Cycles (Presentation)

    SciTech Connect (OSTI)

    Smith, K.; Earleywine, M.; Wood, E.; Pesaran, A.

    2011-11-01

    Laboratories run around-the-clock aging tests to try to understand as quickly as possible how long new Li-ion battery designs will last under certain duty cycles. These tests may include factors such as duty cycles, climate, battery power profiles, and battery stress statistics. Such tests are generally accelerated and do not consider possible dwell time at high temperatures and states-of-charge. Battery life-predictive models provide guidance as to how long Li-ion batteries may last under real-world electric-drive vehicle applications. Worst-case aging scenarios are extracted from hundreds of real-world duty cycles developed from vehicle travel surveys. Vehicles examined included PHEV10 and PHEV40 EDVs under fixed (28 degrees C), limited cooling (forced ambient temperature), and aggressive cooling (20 degrees C chilled liquid) scenarios using either nightly charging or opportunity charging. The results show that battery life expectancy is 7.8 - 13.2 years for the PHEV10 using a nightly charge in Phoenix, AZ (hot climate), and that the 'aggressive' cooling scenario can extend battery life by 1-3 years, while the 'limited' cooling scenario shortens battery life by 1-2 years. Frequent (opportunity) charging can reduce battery life by 1 year for the PHEV10, while frequent charging can extend battery life by one-half year.

  17. Drive cycle analysis of butanol/diesel blends in a light-duty vehicle.

    SciTech Connect (OSTI)

    Miers, S. A.; Carlson, R. W.; McConnell, S. S.; Ng, H. K.; Wallner, T.; LeFeber, J.; Energy Systems; Esper Images Video & Multimedia

    2008-10-01

    The potential exists to displace a portion of the petroleum diesel demand with butanol and positively impact engine-out particulate matter. As a preliminary investigation, 20% and 40% by volume blends of butanol with ultra low sulfur diesel fuel were operated in a 1999 Mercedes Benz C220 turbo diesel vehicle (Euro III compliant). Cold and hot start urban as well as highway drive cycle tests were performed for the two blends of butanol and compared to diesel fuel. In addition, 35 MPH and 55 MPH steady-state tests were conducted under varying road loads for the two fuel blends. Exhaust gas emissions, fuel consumption, and intake and exhaust temperatures were acquired for each test condition. Filter smoke numbers were also acquired during the steady-state tests.

  18. Fact #854 January 5, 2015 Driving Ranges for All-Electric Vehicles in Model Year 2014 Vary from 62 to 265 Miles – Dataset

    Broader source: Energy.gov [DOE]

    Excel file with dataset for Driving Ranges for All-Electric Vehicles in Model Year 2014 Vary from 62 to 265 Miles

  19. Medium Truck Duty Cycle Data from Real-World Driving Environments: Project Interim Report

    SciTech Connect (OSTI)

    Franzese, Oscar; Lascurain, Mary Beth; Capps, Gary J

    2011-01-01

    Since the early part of the 20th century, the US trucking industry has provided a safe and economical means of moving commodities across the country. At the present time, nearly 80% of the US domestic freight movement involves the use of trucks. The US Department of Energy (DOE) is spearheading a number of research efforts to improve heavy vehicle fuel efficiencies. This includes research in engine technologies (including hybrid and fuel cell technologies), lightweight materials, advanced fuels, and parasitic loss reductions. In addition, DOE is developing advanced tools and models to support heavy vehicle truck research, and is leading the 21st Century Truck Partnership whose stretch goals involve a reduction by 50% of the fuel consumption of heavy vehicles on a ton-mile basis. This Medium Truck Duty Cycle (MTDC) Project is a critical element in DOE s vision for improved heavy vehicle energy efficiency and is unique in that there is no other national database of characteristic duty cycles for medium trucks. It involves the collection of real-world data for various situational characteristics (rural/urban, freeway/arterial, congested/free-flowing, good/bad weather, etc.) and looks at the unique nature of medium trucks drive cycles (stop-and-go delivery, power takeoff, idle time, short-radius trips), to provide a rich source of data that can contribute to the development of new tools for fuel efficiency and modeling, provide DOE a sound basis upon which to make technology investment decisions, and provide a national archive of real-world-based medium-truck operational data to support heavy vehicle energy efficiency research. The MTDC project involves a two-part field operational test (FOT). For the Part-1 FOT, three vehicles, each from two vocations (urban transit and dry-box delivery) were instrumented for one year of data collection. The Part-2 FOT will involve the towing/recovery and utility vocations. The vehicles participating in the MTDC project are doing so through gratis partnerships in return for early access to the results of this study. Partnerships such as these are critical to FOTs in which real-world data is being collected. In Part 1 of the project, Oak Ridge National Laboratory(ORNL) established partnerships with the H.T. Hackney Company, one of the largest wholesale distributors in the country, distributing products to 21 states; and with the Knoxville Area Transit (KAT), the City of Knoxville s transit system, operating services across the city of Knoxville and parts of Knox co. These partnerships and agreements provided ORNL access to three Class-7 2005/2007 International day-cab tractors, model 8600, which regularly haul 28 ft pup trailers (H.T. Hackney Co) and three Class-7 2005 Optima LF-34 buses (KAT), for collection of duty cycle data. In addition, ORNL has collaborated with the Federal Motor Carrier Safety Administration (FMCSA) to determine if there were possible synergies between this duty cycle data collection effort and FMCSA s need to learn more about the operation and duty cycles of the second-largest fuel consuming commercial vehicle category in the US. FMCSA s primary interest was in collecting safety data relative to the driver, carrier, and vehicle. In order to collect the duty cycle and safety-related data, ORNL developed a data acquisition and wireless communication system that was placed on each test vehicle. Each signal recorded in this FOT was collected by means of one of the instruments incorporated into each data acquisition system (DAS). Native signals were obtained directly from the vehicle s J1939 and J1708 data buses. A VBOX II Lite collected Global Positioning System related information including speed, acceleration, and spatial location information at a rate of 5 Hz, and communicated this data via the CAN (J1939) protocol. The Air-Weigh LoadMaxx, a self-weighing system which determines the vehicle s gross weight by means of pressure transducers and posts the weight to the vehicle s J1939 data bus, was used to collect vehicle payload information. A cellular modem, the Raven X

  20. Medium Truck Duty Cycle Data from Real-World Driving Environments: Final Report

    SciTech Connect (OSTI)

    Lascurain, Mary Beth; Franzese, Oscar; Capps, Gary J; Siekmann, Adam; Thomas, Neil; LaClair, Tim J; Barker, Alan M; Knee, Helmut E

    2012-11-01

    Since the early part of the 20th century, the US trucking industry has provided a safe and economical means of moving commodities across the country. At present, nearly 80% of US domestic freight movement involves the use of trucks. The US Department of Energy (DOE) is spearheading a number of research efforts to improve heavy vehicle fuel efficiencies. This includes research in engine technologies (including hybrid and fuel cell technologies), lightweight materials, advanced fuels, and parasitic loss reductions. In addition, DOE is developing advanced tools and models to support heavy vehicle research and is leading the 21st Century Truck Partnership and the SuperTruck development effort. Both of these efforts have the common goal of decreasing the fuel consumption of heavy vehicles. In the case of SuperTruck, a goal of improving the overall freight efficiency of a combination tractor-trailer has been established. This Medium Truck Duty Cycle (MTDC) project is a critical element in DOE s vision for improved heavy vehicle energy efficiency; it is unique in that there is no other existing national database of characteristic duty cycles for medium trucks based on collecting data from Class 6 and 7 vehicles. It involves the collection of real-world data on medium trucks for various situational characteristics (e.g., rural/urban, freeway/arterial, congested/free-flowing, good/bad weather) and looks at the unique nature of medium trucks drive cycles (stop-and-go delivery, power takeoff, idle time, short-radius trips). This research provides a rich source of data that can contribute to the development of new tools for FE and modeling, provide DOE a sound basis upon which to make technology investment decisions, and provide a national archive of real-world-based medium-truck operational data to support energy efficiency research. The MTDC project involved a two-part field operational test (FOT). For the Part-1 FOT, three vehicles each from two vocations (urban transit and dry-box delivery) were instrumented for the collection of one year of operational data. The Part-2 FOT involved the towing and recovery and utility vocations for a second year of data collection. The vehicles that participated in the MTDC project did so through gratis partnerships in return for early access to the results of this study. Partnerships such as these are critical to FOTs in which real-world data is being collected. In Part 1 of the project, Oak Ridge National Laboratory (ORNL) established partnerships with the H.T. Hackney Company (HTH), one of the largest wholesale distributors in the country, distributing products to 21 states; and with Knoxville Area Transit (KAT), the city of Knoxville s transit system, which operates across Knoxville and parts of Knox County. These partnerships and agreements provided ORNL access to three Class-7 day-cab tractors that regularly haul 28 ft pup trailers (HTH) and three Class-7 buses for the collection of duty cycle data. In addition, ORNL collaborated with the Federal Motor Carrier Safety Administration (FMCSA) to determine if there were possible synergies between this duty cycle data collection effort and FMCSA s need to learn more about the operation and duty cycles of medium trucks. FMCSA s primary interest was in collecting safety data relative to the driver, carrier, and vehicle. In Part 2 of the project, ORNL partnered with the Knoxville Utilities Board, which made available three Class-8 trucks. Fountain City Wrecker Service was also a Part 2 partner, providing three Class-6 rollback trucks. In order to collect the duty cycle and safety-related data, ORNL developed a data acquisition system (DAS) that was placed on each test vehicle. Each signal recorded in this FOT was collected by means of one of the instruments incorporated into each DAS. Other signals were obtained directly from the vehicle s J1939 and J1708 data buses. A VBOX II Lite collected information available from a global positioning system (GPS), including speed, acceleration, and spatial location information at a rate of 5 Hz for the Part 1

  1. Battery Wear from Disparate Duty-Cycles: Opportunities for Electric-Drive Vehicle Battery Health Management; Preprint

    SciTech Connect (OSTI)

    Smith, K.; Earleywine, M.; Wood, E.; Pesaran, A.

    2012-10-01

    Electric-drive vehicles utilizing lithium-ion batteries experience wholly different degradation patterns than do conventional vehicles, depending on geographic ambient conditions and consumer driving and charging patterns. A semi-empirical life-predictive model for the lithium-ion graphite/nickel-cobalt-aluminum chemistry is presented that accounts for physically justified calendar and cycling fade mechanisms. An analysis of battery life for plug-in hybrid electric vehicles considers 782 duty-cycles from travel survey data superimposed with climate data from multiple geographic locations around the United States. Based on predicted wear distributions, opportunities for extending battery life including modification of battery operating limits, thermal and charge control are discussed.

  2. Medium- and Heavy-Duty Electric Drive Vehicle Simulation and...

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

    model using measured fuel consumption by drive cycle * Simulate fuel consumption 4. Analysis * Sweep range of designs, usage patterns, costs NATIONAL RENEWABLE ENERGY...

  3. Requirements for Defining Utility Drive Cycles: An Exploratory Analysis of Grid Frequency Regulation Data for Establishing Battery Performance Testing Standards

    SciTech Connect (OSTI)

    Hafen, Ryan P.; Vishwanathan, Vilanyur V.; Subbarao, Krishnappa; Kintner-Meyer, Michael CW

    2011-10-19

    Battery testing procedures are important for understanding battery performance, including degradation over the life of the battery. Standards are important to provide clear rules and uniformity to an industry. The work described in this report addresses the need for standard battery testing procedures that reflect real-world applications of energy storage systems to provide regulation services to grid operators. This work was motivated by the need to develop Vehicle-to-Grid (V2G) testing procedures, or V2G drive cycles. Likewise, the stationary energy storage community is equally interested in standardized testing protocols that reflect real-world grid applications for providing regulation services. As the first of several steps toward standardizing battery testing cycles, this work focused on a statistical analysis of frequency regulation signals from the Pennsylvania-New Jersey-Maryland Interconnect with the goal to identify patterns in the regulation signal that would be representative of the entire signal as a typical regulation data set. Results from an extensive time-series analysis are discussed, and the results are explained from both the statistical and the battery-testing perspectives. The results then are interpreted in the context of defining a small set of V2G drive cycles for standardization, offering some recommendations for the next steps toward standardizing testing protocols.

  4. Statistical Characterization of School Bus Drive Cycles Collected via Onboard Logging Systems

    SciTech Connect (OSTI)

    Duran, A.; Walkowicz, K.

    2013-10-01

    In an effort to characterize the dynamics typical of school bus operation, National Renewable Energy Laboratory (NREL) researchers set out to gather in-use duty cycle data from school bus fleets operating across the country. Employing a combination of Isaac Instruments GPS/CAN data loggers in conjunction with existing onboard telemetric systems resulted in the capture of operating information for more than 200 individual vehicles in three geographically unique domestic locations. In total, over 1,500 individual operational route shifts from Washington, New York, and Colorado were collected. Upon completing the collection of in-use field data using either NREL-installed data acquisition devices or existing onboard telemetry systems, large-scale duty-cycle statistical analyses were performed to examine underlying vehicle dynamics trends within the data and to explore vehicle operation variations between fleet locations. Based on the results of these analyses, high, low, and average vehicle dynamics requirements were determined, resulting in the selection of representative standard chassis dynamometer test cycles for each condition. In this paper, the methodology and accompanying results of the large-scale duty-cycle statistical analysis are presented, including graphical and tabular representations of a number of relationships between key duty-cycle metrics observed within the larger data set. In addition to presenting the results of this analysis, conclusions are drawn and presented regarding potential applications of advanced vehicle technology as it relates specifically to school buses.

  5. Application of a Tractive Energy Analysis to Quantify the Benefits of Advanced Efficiency Technologies Using Characteristic Drive Cycle Data

    SciTech Connect (OSTI)

    LaClair, Tim J

    2012-01-01

    Accurately predicting the fuel savings that can be achieved with the implementation of various technologies developed for fuel efficiency can be very challenging, particularly when considering combinations of technologies. Differences in the usage of highway vehicles can strongly influence the benefits realized with any given technology, which makes generalizations about fuel savings inappropriate for different vehicle applications. A model has been developed to estimate the potential for reducing fuel consumption when advanced efficiency technologies, or combinations of these technologies, are employed on highway vehicles, particularly medium- and heavy-duty trucks. The approach is based on a tractive energy analysis applied to drive cycles representative of the vehicle usage, and the analysis specifically accounts for individual energy loss factors that characterize the technologies of interest. This tractive energy evaluation is demonstrated by analyzing measured drive cycles from a long-haul trucking fleet and the results of an assessment of the fuel savings potential for combinations of technologies are presented. The results of this research will enable more reliable estimates of the fuel savings benefits that can be realized with particular technologies and technology combinations for individual trucking applications so that decision makers can make informed investment decisions for the implementation of advanced efficiency technologies.

  6. Measured Laboratory and In-Use Fuel Economy Observed over Targeted Drive Cycles for Comparable Hybrid and Conventional Package Delivery Vehicles

    SciTech Connect (OSTI)

    Lammert, M. P.; Walkowicz, K.; Duran, A.; Sindler, P.

    2012-10-01

    In-use and laboratory-derived fuel economies were analyzed for a medium-duty hybrid electric drivetrain with 'engine off at idle' capability and a conventional drivetrain in a typical commercial package delivery application. Vehicles studied included eleven 2010 Freightliner P100H hybrids in service at a United Parcel Service facility in Minneapolis during the first half of 2010. The hybrids were evaluated for 18 months against eleven 2010 Freightliner P100D diesels at the same facility. Both vehicle groups use the same 2009 Cummins ISB 200-HP engine. In-use fuel economy was evaluated using UPS's fueling and mileage records, periodic ECM image downloads, and J1939 CAN bus recordings during the periods of duty cycle study. Analysis of the in-use fuel economy showed 13%-29% hybrid advantage depending on measurement method, and a delivery route assignment analysis showed 13%-26% hybrid advantage on the less kinetically intense original diesel route assignments and 20%-33% hybrid advantage on the more kinetically intense original hybrid route assignments. Three standardized laboratory drive cycles were selected that encompassed the range of real-world in-use data. The hybrid vehicle demonstrated improvements in ton-mi./gal fuel economy of 39%, 45%, and 21% on the NYC Comp, HTUF Class 4, and CARB HHDDT test cycles, respectively.

  7. Numerical evaluation of mechanisms driving Early Jurassic changes in global carbon cycling

    SciTech Connect (OSTI)

    Beerling, D.J.; Brentnall, S.J.

    2007-03-15

    The Early Jurassic (early Toarcian, ca. 183 Ma) carbon cycle perturbation is characterized by aabout -5 parts per thousand {delta} {sup 13}C excursion in the exogenic carbon reservoirs, a 1000 ppm rise in atmospheric CO{sub 2}, and a 6-7 degrees warming. Two proposed explanations for this presumed global carbon cycle perturbation are the liberation of massive amounts of isotopically light CH4 from (1) Gondwanan coals by heating during the intrusive eruption of the Karoo-Ferrar large igneous province (LIP) or (2) the thermal dissociation of gas hydrates. Carbon cycle modeling indicates that the release of CH4 from Gondwanan coals synchronous with the eruption of the Karoo-Ferrar LIP fails to reproduce the magnitude or timing of the CO{sub 2} and {delta} {sup 13}C excursions. However, sensitivity analyses constrained by a marine cyclostratigraphically dated {delta}{sup 13}C record indicate that both features of geologic record can be explained with the huge input of about 15,340-24,750 Gt C over about 220 k.y., a result possibly pointing to the involvement of hydrothermal vent complexes in the Karoo Basin. The simulated release of > 6000 Gt C from gas hydrates also reproduces aspects of the early Toarcian rock record, but the large mass involved raises fundamental questions about its formation, storage, and release.

  8. Comparative urban drive cycle simulations of light-duty hybrid vehicles with gasoline or diesel engines and emissions controls

    SciTech Connect (OSTI)

    Gao, Zhiming; Daw, C Stuart; Smith, David E

    2013-01-01

    Electric hybridization is a very effective approach for reducing fuel consumption in light-duty vehicles. Lean combustion engines (including diesels) have also been shown to be significantly more fuel efficient than stoichiometric gasoline engines. Ideally, the combination of these two technologies would result in even more fuel efficient vehicles. However, one major barrier to achieving this goal is the implementation of lean-exhaust aftertreatment that can meet increasingly stringent emissions regulations without heavily penalizing fuel efficiency. We summarize results from comparative simulations of hybrid electric vehicles with either stoichiometric gasoline or diesel engines that include state-of-the-art aftertreatment emissions controls for both stoichiometric and lean exhaust. Fuel consumption and emissions for comparable gasoline and diesel light-duty hybrid electric vehicles were compared over a standard urban drive cycle and potential benefits for utilizing diesel hybrids were identified. Technical barriers and opportunities for improving the efficiency of diesel hybrids were identified.

  9. DRIVE CYCLE EFFICIENCY AND EMISSIONS ESTIMATES FOR REACTIVITY CONTROLLED COMPRESSION IGNITION IN A MULTI-CYLINDER LIGHT-DUTY DIESEL ENGINE

    SciTech Connect (OSTI)

    Curran, Scott; Briggs, Thomas E; Cho, Kukwon; Wagner, Robert M

    2011-01-01

    In-cylinder blending of gasoline and diesel to achieve Reactivity Controlled Compression Ignition (RCCI) has been shown to reduce NOx and PM emissions while maintaining or improving brake thermal efficiency as compared to conventional diesel combustion (CDC). The RCCI concept has an advantage over many advanced combustion strategies in that by varying both the percent of premixed gasoline and EGR rate, stable combustion can be extended over more of the light-duty drive cycle load range. Changing the percent premixed gasoline changes the fuel reactivity stratification in the cylinder providing further control of combustion phasing and pressure rise rate than the use of EGR alone. This paper examines the combustion and emissions performance of light-duty diesel engine using direct injected diesel fuel and port injected gasoline to carry out RCCI for steady-state engine conditions which are consistent with a light-duty drive cycle. A GM 1.9L four-cylinder engine with the stock compression ratio of 17.5:1, common rail diesel injection system, high-pressure EGR system and variable geometry turbocharger was modified to allow for port fuel injection with gasoline. Engine-out emissions, engine performance and combustion behavior for RCCI operation is compared against both CDC and a premixed charge compression ignition (PCCI) strategy which relies on high levels of EGR dilution. The effect of percent of premixed gasoline, EGR rate, boost level, intake mixture temperature, combustion phasing and pressure rise rate is investigated for RCCI combustion for the light-duty modal points. Engine-out emissions of NOx and PM were found to be considerably lower for RCCI operation as compared to CDC and PCCI, while HC and CO emissions were higher. Brake thermal efficiency was similar or higher for many of the modal conditions for RCCI operation. The emissions results are used to estimate hot-start FTP-75 emissions levels with RCCI and are compared against CDC and PCCI modes.

  10. Drive Cycle Powertrain Efficiencies and Trends Derived From EPA Vehicle Dynamometer Results

    SciTech Connect (OSTI)

    Thomas, John F

    2014-01-01

    Vehicle manufacturers among others are putting great emphasis on improving fuel economy (FE) of light-duty vehicles in the U.S. market, with significant FE gains being realized in recent years. The U.S. Environmental Protection Agency (EPA) data indicates that the aggregate FE of vehicles produced for the U.S. market has improved by over 20% from model year (MY) 2005 to 2013. This steep climb in FE includes changes in vehicle choice, improvements in engine and transmission technology, and reducing aerodynamic drag, rolling resistance, and parasitic losses. The powertrain related improvements focus on optimizing in-use efficiency of the transmission and engine as a system, and may make use of what is termed downsizing and/or downspeeding. This study explores quantifying recent improvements in powertrain efficiency, viewed separately from other vehicle alterations and attributes (noting that most vehicle changes are not completely independent). A methodology is outlined to estimate powertrain efficiency for the U.S city and highway cycle tests using data from the EPA vehicle database. Comparisons of common conventional gasoline powertrains for similar MY 2005 and 2013 vehicles are presented, along with results for late-model hybrid electric vehicles, the Nissan Leaf, Chevy Volt and other selected vehicles.

  11. EVALUATION OF THE EFFECTIVENESS OF TRUCK EFFICIENCY TECHNOLOGIES IN CLASS 8 TRACTOR-TRAILERS BASED ON A TRACTIVE ENERGY ANALYSIS USING MEASURED DRIVE CYCLE DATA

    SciTech Connect (OSTI)

    LaClair, Tim J; Gao, Zhiming; Fu, Joshua S.; Calcagno, Jimmy; Yun, Jeongran

    2014-01-01

    Quantifying the fuel savings that can be achieved from different truck fuel efficiency technologies for a fleet s specific usage allows the fleet to select the combination of technologies that will yield the greatest operational efficiency and profitability. This paper presents an analysis of vehicle usage in a commercial vehicle fleet and an assessment of advanced efficiency technologies using an analysis of measured drive cycle data for a class 8 regional commercial shipping fleet. Drive cycle measurements during a period of a full year from six tractor-trailers in normal operations in a less-than-truckload (LTL) carrier were analyzed to develop a characteristic drive cycle that is highly representative of the fleet s usage. The vehicle mass was also estimated to account for the variation of loads that the fleet experienced. The drive cycle and mass data were analyzed using a tractive energy analysis to quantify the fuel efficiency and CO2 emissions benefits that can be achieved on class 8 tractor-trailers when using advanced efficiency technologies, either individually or in combination. Although differences exist among class 8 tractor-trailer fleets, this study provides valuable insight into the energy and emissions reduction potential that various technologies can bring in this important trucking application.

  12. HTGR Technology Family Assessment for a Range of Fuel Cycle Missions

    SciTech Connect (OSTI)

    Steven J. Piet; Samuel E. Bays; Nick Soelberg

    2010-08-01

    This report examines how the HTGR technology family can provide options for the once through, modified open cycle (MOC), or full recycle fuel cycle strategies. The HTGR can serve all the fuel cycle missions that an LWR can; both are thermal reactors. Additional analyses are warranted to determine if HTGR full recycle service could provide improved consumption of transuranic (TRU) material than LWRs (as expected), to analyze the unique proliferation resistance issues associated with the pebble bed approach, and to further test and analyze methods to separate TRISO-coated fuel particles from graphite and/or to separate used HTGR fuel meat from its TRISO coating. The feasibility of these two separation issues is not in doubt, but further R&D could clarify and reduce the cost and enable options not adequately explored at present. The analyses here and the now-demonstrated higher fuel burnup tests (after the illustrative designs studied here) should enable future MOC and full recycle HTGR concepts to more rapidly consume TRU, thereby offering waste management advantages. Interest in limited separation or minimum fuel treatment separation approaches motivates study of impurity-tolerant fuel fabrication. Several issues are outside the scope of this report, including the following: thorium fuel cycles, gas-cooled fast reactors, the reliability of TRISO-coated particles (billions in a reactor), and how soon any new reactor or fuel type could be licensed and then deployed and therefore impact fuel cycle performance measures.

  13. Measured Laboratory and In-Use Fuel Economy Observed over Targeted Drive Cycles for Comparable Hybrid and Conventional Package Delivery Vehicles

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

    2-01-2049 Measured Laboratory and In-Use Fuel Economy Published Observed over Targeted Drive Cycles for 09/24/2012 Comparable Hybrid and Conventional Package Delivery Vehicles Michael P. Lammert, Kevin Walkowicz, Adam Duran and Petr Sindler National Renewable Energy Laboratory ABSTRACT This research project compares the in-use and laboratory- derived fuel economy of a medium-duty hybrid electric drivetrain with "engine off at idle" capability to a conventional drivetrain in a typical

  14. HTGR Technology Family Assessment for a Range of Fuel Cycle Missions

    SciTech Connect (OSTI)

    Steven J. Piet; Samuel E. Bays; Nick R. Soelberg

    2010-11-01

    This report examines how the HTGR technology family can provide options for the once through, modified open cycle (MOC), or full recycle fuel cycle strategies. The HTGR can serve all the fuel cycle missions that an LWR can; both are thermal reactors. Additional analyses are warranted to determine if HTGR full recycle service could provide improved consumption of transuranic (TRU) material than LWRs (as expected), to analyze the unique proliferation resistance issues associated with the pebble bed approach, and to further test and analyze methods to separate TRISO-coated fuel particles from graphite and/or to separate used HTGR fuel meat from its TRISO coating. The feasibility of these two separation issues is not in doubt, but further R&D could clarify and reduce the cost and enable options not adequately explored at present. The analyses here and the now-demonstrated higher fuel burnup tests (after the illustrative designs studied here) should enable future MOC and full recycle HTGR concepts to more rapidly consume TRU, thereby offering waste management advantages. Interest in limited separation or minimum fuel treatment separation approaches motivates study of impurity-tolerant fuel fabrication.

  15. Evaluation of Range Estimates for Toyota FCHV-adv Under Open...

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

    US DRIVE Hydrogen Storage Technical Team Roadmap National Fuel Cell Electric Vehicle Learning Demonstration Final Report Off-Cycle Benchmarking of PHEVs; Wide Range of ...

  16. Contribution of Road Grade to the Energy Use of Modern Automobiles Across Large Datasets of Real-World Drive Cycles: Preprint

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

    Contribution of Road Grade to the Energy Use of Modern Automobiles Across Large Datasets of Real-World Drive Cycles Preprint Eric Wood, Evan Burton, Adam Duran, and Jeff Gonder To be presented at the SAE World Congress 2014 Detroit, Michigan April 8-10, 2014 Conference Paper NREL/CP-5400-61108 January 2014 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308.

  17. Drive Diagnostic Filter Wheel Control

    Energy Science and Technology Software Center (OSTI)

    2007-07-17

    DrD Filter Wheel Control is National Instrument's Labview software that drives a Drive Diagnostic filter wheel. The software can drive the filter wheel between each end limit, detect the positive and negative limit and each home position and post the stepper motot values to an Excel spreadsheet. The software can also be used to cycle the assembly between the end limits.

  18. iDriving (Intelligent Driving)

    Energy Science and Technology Software Center (OSTI)

    2012-09-17

    iDriving identifies the driving style factors that have a major impact on fuel economy. An optimization framework is used with the aim of optimizing a driving style with respect to these driving factors. A set of polynomial metamodels is constructed to reflect the responses produced in fuel economy by changing the driving factors. The optimization framework is used to develop a real-time feedback system, including visual instructions, to enable drivers to alter their driving stylesmore »in responses to actual driving conditions to improve fuel efficiency.« less

  19. Fuel Cycle Technologies | Department of Energy

    Office of Environmental Management (EM)

    Initiatives Fuel Cycle Technologies Fuel Cycle Technologies Fuel Cycle Technologies Preparing for Tomorrow's Energy Demands Powerful imperatives drive the continued need for...

  20. DRIVING DIRECTIONS

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

    DRIVING DIRECTIONS HILTON PALACIO DEL RIO 200 South Alamo Street San Antonio, Texas 78205 (210) 222-1400 San Antonio International Airport DIRECTIONS Take Interstate 281 south to Commerce Street. Continue west on Commerce Street to Losoya Street, turn left. Losoya becomes Alamo. The Hilton Palacio del Rio is located at 200 South Alamo Street. Distance from Hotel: 8 mi. Drive Time: 20 min. From the South: -I 37 North and take Commerce Street exit -Turn left at Commerce Street -Follow Commerce

  1. AVTA: Battery Testing- Electric Drive and Advanced Battery and Components Testbed

    Broader source: Energy.gov [DOE]

    The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The AVTA runs the Electric Drive and Advanced Battery and Components Testbed to capture batteries’ real-world performance. The Testbed simulates battery charging as well as on-road driving. Researchers run the Testbed on a daily basis on cycles that represent typical driving and charging patterns. This research was conducted by Idaho National Laboratory.

  2. U.S. DRIVE

    SciTech Connect (OSTI)

    2012-03-16

    U.S. DRIVE, which stands for United States Driving Research and Innovation for Vehicle efficiency and Energy sustainability, is an expanded government-industry partnership among the U.S. Department of Energy; USCAR, representing Chrysler Group LLC, Ford Motor Company and General Motors; Tesla Motors; five energy companies BP America, Chevron Corporation, ConocoPhillips, ExxonMobil Corporation, and Shell Oil Products US; two utilities Southern California Edison and Michigan-based DTE Energy; and the Electric Power Research Institute (EPRI). The U.S. DRIVE mission is to accelerate the development of pre-competitive and innovative technologies to enable a full range of affordable and clean advanced light-duty vehicles, as well as related energy infrastructure.

  3. Magnetic compression laser driving circuit

    DOE Patents [OSTI]

    Ball, D.G.; Birx, D.; Cook, E.G.

    1993-01-05

    A magnetic compression laser driving circuit is disclosed. The magnetic compression laser driving circuit compresses voltage pulses in the range of 1.5 microseconds at 20 kilovolts of amplitude to pulses in the range of 40 nanoseconds and 60 kilovolts of amplitude. The magnetic compression laser driving circuit includes a multi-stage magnetic switch where the last stage includes a switch having at least two turns which has larger saturated inductance with less core material so that the efficiency of the circuit and hence the laser is increased.

  4. Magnetic compression laser driving circuit

    DOE Patents [OSTI]

    Ball, Don G. (Livermore, CA); Birx, Dan (Brentwood, CA); Cook, Edward G. (Livermore, CA)

    1993-01-01

    A magnetic compression laser driving circuit is disclosed. The magnetic compression laser driving circuit compresses voltage pulses in the range of 1.5 microseconds at 20 Kilovolts of amplitude to pulses in the range of 40 nanoseconds and 60 Kilovolts of amplitude. The magnetic compression laser driving circuit includes a multi-stage magnetic switch where the last stage includes a switch having at least two turns which has larger saturated inductance with less core material so that the efficiency of the circuit and hence the laser is increased.

  5. Analysis of Battery Wear and V2G Benefits Using Real-world Drive...

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

    of Battery Wear and V2G Benefits Using Real-world Drive Cycles and Ambient Data Analysis of Battery Wear and V2G Benefits Using Real-world Drive Cycles and Ambient Data 2011 DOE...

  6. Truck Duty Cycle and Performance Data Collection and Analysis...

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

    More Documents & Publications Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion Truck Duty Cycle and Performance Data Collection and Analysis Program 2010 ...

  7. Truck Duty Cycle and Performance Data Collection and Analysis...

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

    More Documents & Publications Truck Duty Cycle and Performance Data Collection and Analysis Program Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion ...

  8. Holiday Food Drive

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

    Food Drive Holiday Food Drive Laboratory employees helped donate 300 boxes of nonperishable food items and 360 frozen turkeys during the 2015 annual food drive. September 16, 2013 LANL employees organize food for the Holiday Food Drive. Contacts Annual Food & Holiday Gift Drives Mike Martinez (505) 699-3388 Community Relations & Partnerships (505) 665-4400 Email Helping feed Northern New Mexico families During the Laboratory's 2015 Annual Food Drive, employees and subcontract workers

  9. FMC high power density electric drive technology

    SciTech Connect (OSTI)

    Shafer, G.A.

    1994-12-31

    FMC has developed a unique capability in energy-efficient, high-performance AC induction electric drive systems for electric and hybrid vehicles. These drives will not only be important to future military ground combat vehicles, but will also provide significant competitive advantages to industrial and commercial machinery and vehicles. The product line under development includes drive motors and associated power converters directed at three power/vehicle weight classes. These drive systems cover a broad spectrum of potential vehicle applications, ranging from light pickup trucks to full-size transit buses. The drive motors and power converters are described.

  10. Stirling cycle machine

    SciTech Connect (OSTI)

    Burnett, S.C.; Purcell, J.R.; Creedon, W.P.; Joshi, C.H.

    1990-06-05

    This patent describes an improvement in a Stirling cycle machine including first and second variable-volume, compression-expansion chambers containing a gas a regenerator interconnecting the chambers and for conducting the gas therebetween, and eccentric drive means for driving the first and second chambers. It comprises: the eccentric drive means comprising a pair of rotatably mounted shafts, at least one pair of eccentric disks fixed on the shafts in phase with each other, and means for causing the shafts and thereby the eccentric disks to rotate in opposite directions.

  11. Adjustable Speed Drive Part-Load Efficiency

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

    Adjustable Speed Drive Part-Load Efficiency An adjustable speed drive (ASD) is a device that controls the rotational speed of motor-driven equipment. Variable frequency drives (VFDs), the most common type of ASD, are solid-state electronic motor controllers that effciently meet varying process requirements by adjusting the frequency and voltage of power supplied to an alternating current (AC) motor to enable it to operate over a wide speed range. External sensors monitor fow, liquid levels, or

  12. Frequency modulation drive for a piezoelectric motor

    DOE Patents [OSTI]

    Mittas, Anthony

    2001-01-01

    A piezoelectric motor has peak performance at a specific frequency f.sub.1 that may vary over a range of frequencies. A drive system is disclosed for operating such a motor at peak performance without feedback. The drive system consists of the motor and an ac source connected to power the motor, the ac source repeatedly generating a frequency over a range from f.sub.1 -.DELTA.x to f.sub.1 +.DELTA.y.

  13. Oscillatory nonohomic current drive for maintaining a plasma current

    DOE Patents [OSTI]

    Fisch, N.J.

    1984-01-01

    Apparatus and methods are described for maintaining a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

  14. Oscillatory nonhmic current drive for maintaining a plasma current

    DOE Patents [OSTI]

    Fisch, Nathaniel J. (Princeton, NJ)

    1986-01-01

    Apparatus and method of the invention maintain a plasma current with an oscillatory nonohmic current drive. Each cycle of operation has a generation period in which current driving energy is applied to the plasma, and a relaxation period in which current driving energy is removed. Plasma parameters, such as plasma temperature or plasma average ionic charge state, are modified during the generation period so as to oscillate plasma resistivity in synchronism with the application of current driving energy. The invention improves overall current drive efficiencies.

  15. Climate Control Load Reduction Strategies for Electric Drive Vehicles in Warm Weather

    SciTech Connect (OSTI)

    Jeffers, M. A.; Chaney, L.; Rugh, J. P.

    2015-04-30

    Passenger compartment climate control is one of the largest auxiliary loads on a vehicle. Like conventional vehicles, electric vehicles (EVs) require climate control to maintain occupant comfort and safety, but cabin heating and air conditioning have a negative impact on driving range for all electric vehicles. Range reduction caused by climate control and other factors is a barrier to widespread adoption of EVs. Reducing the thermal loads on the climate control system will extend driving range, thereby reducing consumer range anxiety and increasing the market penetration of EVs. Researchers at the National Renewable Energy Laboratory have investigated strategies for vehicle climate control load reduction, with special attention toward EVs. Outdoor vehicle thermal testing was conducted on two 2012 Ford Focus Electric vehicles to evaluate thermal management strategies for warm weather, including solar load reduction and cabin pre-ventilation. An advanced thermal test manikin was used to assess a zonal approach to climate control. In addition, vehicle thermal analysis was used to support testing by exploring thermal load reduction strategies, evaluating occupant thermal comfort, and calculating EV range impacts. Through stationary cooling tests and vehicle simulations, a zonal cooling configuration demonstrated range improvement of 6%-15%, depending on the drive cycle. A combined cooling configuration that incorporated thermal load reduction and zonal cooling strategies showed up to 33% improvement in EV range.

  16. School Supply Drive

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

    School Supply Drive School Supply Drive Each year, Laboratory employees donate school supplies and backpacks for Northern New Mexico students as they start the new school year. September 16, 2013 Del Norte Credit Union's Baxter Bear takes a moment to pose with some of the backpacks filled with school supplies that will help students start their school year off right. Contact Giving Drives Mike Martinez Community Relations & Partnerships (505) 699-3388 Email Providing students with good start

  17. Holiday Food Drive

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

    Community Programs Office (505) 665-4400 Email Get Expertise Helping feed Northern New Mexico families During the Laboratory's 2015 Annual Food Drive, employees and subcontract...

  18. Variable Frequency Drives

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

    Marketing Toolkit The Benefits of Variable Frequency Drives (VFDs) VFDs help adjust motor speeds to match loads and improve efficiency while conserving energy. The benefits...

  19. A Drive Laser for Multi-Bunch Photoinjector Operation

    SciTech Connect (OSTI)

    Gibson, D J; Cormier, E; Messerly, M J; Prantil, M A; Barty, C J

    2012-05-11

    Numerous electron beam applications would benefit from increased average current without sacrificing beam brightness. Work is underway at LLNL to investigate the performance of X-band photoinjectors that would generate electron bunches at a rate matching the RF drive frequency, i.e. one bunch per RF cycle. A critical part of this effort involves development of photo-cathode drive laser technology. Here we present a new laser architecture that can generate pulse trains at repetition rates up to several GHz. This compact, fiber-based system is driven directly by the accelerator RF and so is inherently synchronized with the accelerating fields, and scales readily over a wide range of drive frequencies (L-band through X-band). The system will be required to produce 0.5 {mu}J, {approx}200 fs rise time, spatially and temporally shaped UV pulses designed to optimize the electron beam brightness. Presented is the current status of this system, producing 2 ps pulses from a continuous-wave source.

  20. Piezoelectric drive circuit

    DOE Patents [OSTI]

    Treu, C.A. Jr.

    1999-08-31

    A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes. 7 figs.

  1. Piezoelectric drive circuit

    DOE Patents [OSTI]

    Treu, Jr., Charles A.

    1999-08-31

    A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes.

  2. Adjustable Speed Drive Part-Load Efficiency | Department of Energy

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

    Drive Part-Load Efficiency Adjustable Speed Drive Part-Load Efficiency An adjustable speed drive (ASD) is a device that controls the rotational speed of motor-driven equipment. Variable frequency drives (VFDs), the most common type of ASDs, efficiently meet varying process requirements by adjusting the frequency and voltage of the power supplied to an AC motor to enable it to operate over a wide speed range. External sensors monitor flow, liquid levels, or pressure and then transmit a signal to

  3. Control rod drive

    DOE Patents [OSTI]

    Hawke, Basil C. (Solana Beach, CA)

    1986-01-01

    A control rod drive uses gravitational forces to insert one or more control rods upwardly into a reactor core from beneath the reactor core under emergency conditions. The preferred control rod drive includes a vertically movable weight and a mechanism operatively associating the weight with the control rod so that downward movement of the weight is translated into upward movement of the control rod. The preferred control rod drive further includes an electric motor for driving the control rods under normal conditions, an electrically actuated clutch which automatically disengages the motor during a power failure and a decelerator for bringing the control rod to a controlled stop when it is inserted under emergency conditions into a reactor core.

  4. US DRIVE Driving Research and Innovation for Vehicle Efficiency...

    Energy Savers [EERE]

    Vehicle Efficiency and Energy Sustainability Partnership Plan US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability Partnership Plan This ...

  5. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2006-10-10

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  6. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett Lee; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-09-19

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  7. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Stowell, Jesse; Costin, Daniel

    2006-07-11

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  8. Direct drive wind turbine

    DOE Patents [OSTI]

    Bywaters, Garrett; Danforth, William; Bevington, Christopher; Jesse, Stowell; Costin, Daniel

    2007-02-27

    A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.

  9. Holiday Gift Drive

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

    Gift Drive Holiday Gift Drive Every year, Laboratory employees help fulfill the holiday wishes of children and seniors in our communities. In 2015, our employees donated more than 1,200 gifts to 23 nonprofit organizations to help Northern New Mexico children, senior citizens, and families have a brighter holiday season. May 7, 2015 Every holiday season, employees of Los Alamos National Laboratory donate and distribute gifts to families in need throughout Northern New Mexico. Contacts Annual Food

  10. Sandia Energy - Electric Drive Systems

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

    Electric Drive Systems Home Transportation Energy Energy Storage Components and Systems Electric Drive Systems Electric Drive Systemscwdd2015-05-08T03:08:45+00:00 Reduce Size,...

  11. Ceramic vane drive joint

    DOE Patents [OSTI]

    Smale, Charles H. (Indianapolis, IN)

    1981-01-01

    A variable geometry gas turbine has an array of ceramic composition vanes positioned by an actuating ring coupled through a plurality of circumferentially spaced turbine vane levers to the outer end of a metallic vane drive shaft at each of the ceramic vanes. Each of the ceramic vanes has an end slot of bow tie configuration including flared end segments and a center slot therebetween. Each of the vane drive shafts has a cross head with ends thereof spaced with respect to the sides of the end slot to define clearance for free expansion of the cross head with respect to the vane and the cross head being configured to uniformly distribute drive loads across bearing surfaces of the vane slot.

  12. Combined cycle power plant incorporating coal gasification

    DOE Patents [OSTI]

    Liljedahl, Gregory N. (Tariffville, CT); Moffat, Bruce K. (Simsbury, CT)

    1981-01-01

    A combined cycle power plant incorporating a coal gasifier as the energy source. The gases leaving the coal gasifier pass through a liquid couplant heat exchanger before being used to drive a gas turbine. The exhaust gases of the gas turbine are used to generate both high pressure and low pressure steam for driving a steam turbine, before being exhausted to the atmosphere.

  13. Traction drive automatic transmission for gas turbine engine driveline

    DOE Patents [OSTI]

    Carriere, Donald L. (Livonia, MI)

    1984-01-01

    A transaxle driveline for a wheeled vehicle has a high speed turbine engine and a torque splitting gearset that includes a traction drive unit and a torque converter on a common axis transversely arranged with respect to the longitudinal centerline of the vehicle. The drive wheels of the vehicle are mounted on a shaft parallel to the turbine shaft and carry a final drive gearset for driving the axle shafts. A second embodiment of the final drive gearing produces an overdrive ratio between the output of the first gearset and the axle shafts. A continuously variable range of speed ratios is produced by varying the position of the drive rollers of the traction unit. After starting the vehicle from rest, the transmission is set for operation in the high speed range by engaging a first lockup clutch that joins the torque converter impeller to the turbine for operation as a hydraulic coupling.

  14. Development of Radically Enhanced alnico Magnets (DREAM) for Traction Drive

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

    Motors | The Ames Laboratory Development of Radically Enhanced alnico Magnets (DREAM) for Traction Drive Motors Research Personnel Publications Synthesis In order to enable domestic automobile makers to offer a broad range of vehicles with electric drive motors with either hybrid or purely electric motor drives, this project will utilize a demonstrated science-based process to design and synthesize a high energy product permanent magnet of the alnico type in bulk final shapes without rare

  15. Manganese Reduction-Oxidation Drives Plant Debris Decomposition

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

    Manganese Reduction-Oxidation Drives Plant Debris Decomposition Manganese Reduction-Oxidation Drives Plant Debris Decomposition Print Monday, 22 February 2016 00:00 Microbial decomposition of plant debris ("litter") is a keystone ecosystem process because it regulates nutrient availability, ecosystem productivity, and carbon (C) cycling. Historically, climate (primarily temperature and precipitation) has been thought to regulate the rate of litter decomposition, which then influences

  16. Drive Cycle Analysis, Measurement of Emissions and Fuel Consumption...

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

    ... Relative to the baseline school bus, the PHEV fuel savings in charge-depleting (CD) mode ... PHEV school bus would initially operate in CD mode for some distance, then in a ...

  17. Drive alignment pays maintenance dividends

    SciTech Connect (OSTI)

    Fedder, R.

    2008-12-15

    Proper alignment of the motor and gear drive on conveying and processing equipment will result in longer bearing and coupling life, along with lower maintenance costs. Selecting an alignment free drive package instead of a traditional foot mounted drive and motor is a major advancement toward these goals. 4 photos.

  18. Fuel Cycle Technologies | Department of Energy

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

    Fuel Cycle Technologies Fuel Cycle Technologies Fuel Cycle Technologies Preparing for Tomorrow's Energy Demands Powerful imperatives drive the continued need for nuclear power, among them the need for reliable, baseload electricity and the threat of global climate change. As the only large-scale source of nearly greenhouse gas-free energy, nuclear power is an essential part of our all-of-the-above energy strategy, generating about 20 percent of our nation's electricity and more than 60 percent

  19. Base drive circuit

    DOE Patents [OSTI]

    Lange, Arnold C. (Livermore, CA)

    1995-01-01

    An improved base drive circuit (10) having a level shifter (24) for providing bistable input signals to a pair of non-linear delays (30, 32). The non-linear delays (30, 32) provide gate control to a corresponding pair of field effect transistors (100, 106) through a corresponding pair of buffer components (88, 94). The non-linear delays (30, 32) provide delayed turn-on for each of the field effect transistors (100, 106) while an associated pair of transistors (72, 80) shunt the non-linear delays (30, 32) during turn-off of the associated field effect transistor (100, 106).

  20. Base drive circuit

    DOE Patents [OSTI]

    Lange, A.C.

    1995-04-04

    An improved base drive circuit having a level shifter for providing bistable input signals to a pair of non-linear delays. The non-linear delays provide gate control to a corresponding pair of field effect transistors through a corresponding pair of buffer components. The non-linear delays provide delayed turn-on for each of the field effect transistors while an associated pair of transistors shunt the non-linear delays during turn-off of the associated field effect transistor. 2 figures.

  1. Stop/Start: Driving

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    highlighted Braking button subbanner graphic: gray bar PULLING OUT & DRIVING PART 1 The gasoline engine does not run when the vehicle is at rest. When pulling out, the electric starter/generator uses electricity from the battery to instantly start the gasoline engine---the sole source of propulsion for the vehicle. Go to next… stage graphic: vertical blue rule Main stage: See through car with battery, engine, and electric starter/generator visible. The car is stopped at an intersection.

  2. UGE Scheduler Cycle Time

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

    UGE Scheduler Cycle Time UGE Scheduler Cycle Time Genepool Cycle Time Genepool Daily Genepool Weekly Phoebe Cycle Time Phoebe Daily Phoebe Weekly What is the Scheduler Cycle? The...

  3. A novel Stirling engine with an elliptic drive

    SciTech Connect (OSTI)

    Fang, H.W.; Herold, K.E.; Holland, H.M.; Beach, E.H.

    1996-12-31

    The concept of the Stirling cycle seems quite simple when presented as a cycle involving two constant temperature and two constant volume processes. The reality of machines that have evolved from the Stirling concept is considerably more complicated. Most real machines employ a drive mechanism that approximates a sinusoidal volume variation for each of the cylinders. This results in an overall volume variation that only poorly approximates the constant volume processes postulated in the classic definition of a Stirling cycle. The difficulties of achieving the piston motions necessary to attain the discontinuous motions of the classic cycle are well known and, as a result, the sinusoidal motions are widely accepted as an inevitable compromise. It is noted that free piston Stirling machines are not constrained in the same manner. However, the discussion here focuses on kinematic drive machines. In the current study, a Rider-type engine with an elliptic drive is modeled with the objective of clarifying the potential of a more ideal volume variation. This drive mechanism is the subject of a US Patent filed with Serial Number 08/360,052 on 20 December 1994.

  4. Rotary drive mechanism

    SciTech Connect (OSTI)

    Kenderdine, E.W.

    1991-10-08

    This patent describes a rotary drive mechanism which includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de- energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti- overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

  5. Rotary drive mechanism

    DOE Patents [OSTI]

    Kenderdine, Eugene W. (Albuquerque, NM)

    1991-01-01

    A rotary drive mechanism includes a rotary solenoid having a stator and multi-poled rotor. A moving member rotates with the rotor and is biased by a biasing device. The biasing device causes a further rotational movement after rotation by the rotary solenoid. Thus, energization of the rotary solenoid moves the member in one direction to one position and biases the biasing device against the member. Subsequently, de-energization of the rotary solenoid causes the biasing device to move the member in the same direction to another position from where the moving member is again movable by energization and de-energization of the rotary solenoid. Preferably, the moving member is a multi-lobed cam having the same number of lobes as the rotor has poles. An anti-overdrive device is also preferably provided for preventing overdrive in the forward direction or a reverse rotation of the moving member and for precisely aligning the moving member.

  6. Sequenced drive for rotary valves

    DOE Patents [OSTI]

    Mittell, Larry C. (Palos Verdes Estates, CA)

    1981-01-01

    A sequenced drive for rotary valves which provides the benefits of applying rotary and linear motions to the movable sealing element of the valve. The sequenced drive provides a close approximation of linear motion while engaging or disengaging the movable element with the seat minimizing wear and damage due to scrubbing action. The rotary motion of the drive swings the movable element out of the flowpath thus eliminating obstruction to flow through the valve.

  7. Distribution Drive | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Name: Distribution Drive Place: Dallas, Texas Zip: 75205 Product: Biodiesel fuel distributor. Coordinates: 32.778155, -96.795404 Show Map Loading map......

  8. Test Drive: Honda FCX Clarity

    Broader source: Energy.gov [DOE]

    A member of the Energy Empowers team takes the Honda FCX Clarity for a drive outside the U.S. Department of Energy in Washington, D.C.

  9. Traction Drive Systems Breakout Group

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

    TRACTION DRIVE SYSTEM BREAKOUT GROUP EV Everywhere Workshop July 24, 2012 Breakout Session 1 - Discussion of Performance Targets and Barriers Comments on the Achievability of the...

  10. Long Range Development Plan

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

    scientific missions. Science drives the Lab's development. LRDPs establish a framework of land-use principles and policies to guide future growth and change through 2025. The plan...

  11. ORC Closed Loop Control Systems for Transient and Steady State Duty Cycles

    Broader source: Energy.gov [DOE]

    System-level models using iterative concept analysis are being used on a closed loop controlled, waste heat recovery system running automatically over various drive cycles.

  12. EV Everywhere: Maximizing Electric Cars' Range in Extreme Temperatures |

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

    Department of Energy Electric Vehicle Basics » EV Everywhere: Maximizing Electric Cars' Range in Extreme Temperatures EV Everywhere: Maximizing Electric Cars' Range in Extreme Temperatures The efficiency and all-electric driving range of plug-in electric vehicles (also known as electric cars or EVs) varies based on a number of factors, including driver habits, driving conditions, and temperature, such as hot or cold weather. For an all-electric vehicle, reduced range may mean the driver

  13. Light beam range finder

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1998-01-01

    A "laser tape measure" for measuring distance which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%.

  14. Light beam range finder

    DOE Patents [OSTI]

    McEwan, T.E.

    1998-06-16

    A ``laser tape measure`` for measuring distance is disclosed which includes a transmitter such as a laser diode which transmits a sequence of electromagnetic pulses in response to a transmit timing signal. A receiver samples reflections from objects within the field of the sequence of visible electromagnetic pulses with controlled timing, in response to a receive timing signal. The receiver generates a sample signal in response to the samples which indicates distance to the object causing the reflections. The timing circuit supplies the transmit timing signal to the transmitter and supplies the receive timing signal to the receiver. The receive timing signal causes the receiver to sample the reflection such that the time between transmission of pulses in the sequence in sampling by the receiver sweeps over a range of delays. The transmit timing signal causes the transmitter to transmit the sequence of electromagnetic pulses at a pulse repetition rate, and the received timing signal sweeps over the range of delays in a sweep cycle such that reflections are sampled at the pulse repetition rate and with different delays in the range of delays, such that the sample signal represents received reflections in equivalent time. The receiver according to one aspect of the invention includes an avalanche photodiode and a sampling gate coupled to the photodiode which is responsive to the received timing signal. The transmitter includes a laser diode which supplies a sequence of visible electromagnetic pulses. A bright spot projected on to the target clearly indicates the point that is being measured, and the user can read the range to that point with precision of better than 0.1%. 7 figs.

  15. Model-Based Analysis of Electric Drive Options for Medium-Duty Parcel Delivery Vehicles: Preprint

    SciTech Connect (OSTI)

    Barnitt, R. A.; Brooker, A. D.; Ramroth, L.

    2010-12-01

    Medium-duty vehicles are used in a broad array of fleet applications, including parcel delivery. These vehicles are excellent candidates for electric drive applications due to their transient-intensive duty cycles, operation in densely populated areas, and relatively high fuel consumption and emissions. The National Renewable Energy Laboratory (NREL) conducted a robust assessment of parcel delivery routes and completed a model-based techno-economic analysis of hybrid electric vehicle (HEV) and plug-in hybrid electric vehicle configurations. First, NREL characterized parcel delivery vehicle usage patterns, most notably daily distance driven and drive cycle intensity. Second, drive-cycle analysis results framed the selection of drive cycles used to test a parcel delivery HEV on a chassis dynamometer. Next, measured fuel consumption results were used to validate simulated fuel consumption values derived from a dynamic model of the parcel delivery vehicle. Finally, NREL swept a matrix of 120 component size, usage, and cost combinations to assess impacts on fuel consumption and vehicle cost. The results illustrated the dependency of component sizing on drive-cycle intensity and daily distance driven and may allow parcel delivery fleets to match the most appropriate electric drive vehicle to their fleet usage profile.

  16. Upgrading coal plant damper drives

    SciTech Connect (OSTI)

    Hood, N.R.; Simmons, K. [Alamaba Power (United States)

    2009-11-15

    The replacement of damper drives on two coal-fired units at the James H. Miller Jr. electric generating plant by Intelligent Contrac electric rotary actuators is discussed. 2 figs.

  17. Direct drive field actuator motors

    DOE Patents [OSTI]

    Grahn, Allen R. (Salt Lake City, UT)

    1998-01-01

    A positive-drive field actuator motor including a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately.

  18. ARM - SGP Rural Driving Hazards

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

    Rural Driving Hazards SGP Related Links Virtual Tour Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site SGP Fact Sheet Images Information for Guest Scientists Contacts SGP Rural Driving Hazards The rural location of the Southern Great Plains (SGP) site facilities requires that visitors travel on unpaved, dirt

  19. Direct drive field actuator motors

    DOE Patents [OSTI]

    Grahn, A.R.

    1998-03-10

    A positive-drive field actuator motor is described which includes a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 62 figs.

  20. Low backlash direct drive actuator

    DOE Patents [OSTI]

    Kuklo, T.C.

    1994-10-25

    A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly comprising a drive hub coaxially attached to the shaft of the motor and having a plurality of drive pins; a driven hub having a plurality of bores in one end thereof in alignment with the drive pins in the drive hub and a threaded shaft coaxially mounted in an opposite end of the driven hub; and a housing having a central bore therein into which are fitted the drive hub and driven hub, the housing having a motor mount on one end thereof to which is mounted the stepper motor, and a closed end portion with a threaded opening therein coaxial with the central bore in the housing and receiving therein the threaded shaft attached to the driven hub. Limit switches mounted to the housing cooperate with an enlarged lip on the driven hub to limit the lateral travel of the driven hub in the housing, which also acts to limit the lateral travel of the threaded shaft which functions as a lead screw. 10 figs.

  1. Low backlash direct drive actuator

    DOE Patents [OSTI]

    Kuklo, Thomas C. (Oakland, CA)

    1994-01-01

    A low backlash direct drive actuator is described which comprises a motor such as a stepper motor having at least 200 steps per revolution; a two part hub assembly comprising a drive hub coaxially attached to the shaft of the motor and having a plurality of drive pins; a driven hub having a plurality of bores in one end thereof in alignment with the drive pins in the drive hub and a threaded shaft coaxially mounted in an opposite end of the driven hub; and a housing having a central bore therein into which are fitted the drive hub and driven hub, the housing having a motor mount on one end thereof to which is mounted the stepper motor, and a closed end portion with a threaded opening therein coaxial with the central bore in the housing and receiving therein the threaded shaft attached to the driven hub. Limit switches mounted to the housing cooperate with an enlarged lip on the driven hub to limit the lateral travel of the driven hub in the housing, which also acts to limit the lateral travel of the threaded shaft which functions as a lead screw.

  2. Driving Green com | Open Energy Information

    Open Energy Info (EERE)

    Driving Green com Jump to: navigation, search Name: Driving Green.com Place: Melbourne, Florida Zip: 32904 Sector: Vehicles Product: Driving green.com is a website that allows...

  3. Driving Accountability for Program Performance Using Measured...

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

    Driving Accountability for Program Performance Using Measured Energy Savings (201) Driving Accountability for Program Performance Using Measured Energy Savings (201) Better ...

  4. Marketing & Driving Demand Collaborative - Social Media Tools...

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

    Marketing & Driving Demand Collaborative - Social Media Tools & Strategies Presentation slides from the Better Buildings webinar on January 6, 2011. PDF icon Marketing & Driving ...

  5. Marketing & Driving Demand: Social Media Tools & Strategies ...

    Office of Environmental Management (EM)

    Marketing & Driving Demand: Social Media Tools & Strategies - January 16, 2011 (Text Version) Marketing & Driving Demand: Social Media Tools & Strategies - January 16, 2011 (Text...

  6. Cone Drive Operations Inc | Open Energy Information

    Open Energy Info (EERE)

    enveloping worm gear technology. The company supplies azimuth and elevation drives for solar tracking applications. References: Cone Drive Operations Inc1 This article is a...

  7. Grand Challenge Portfolio: Driving Innovations in Industrial...

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

    Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January ...

  8. Advanced Electric Drive Vehicles | Department of Energy

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

    PDF icon arravt039tischwendeman2012o.pdf More Documents & Publications Advanced Electric Drive Vehicles Advanced Electric Drive Vehicles Energy & Manufacturing Workforce...

  9. Advanced Electric Drive Vehicles | Department of Energy

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

    PDF icon arravt039tischwendeman2011p.pdf More Documents & Publications Advanced Electric Drive Vehicles Advanced Electric Drive Vehicles 2010 DOE EERE Vehicle...

  10. Advanced Electric Drive Vehicles | Department of Energy

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

    D.C. PDF icon tiarravt039schwendeman2010o.pdf More Documents & Publications Advanced Electric Drive Vehicles Advanced Electric Drive Vehicles Energy & Manufacturing Workforce...

  11. Computer-Aided Engineering for Electric-Drive Vehicle Batteries

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

    Computer-Aided Engineering for Electric-Drive Vehicle Batteries - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle

  12. Manganese Reduction-Oxidation Drives Plant Debris Decomposition

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

    Manganese Reduction-Oxidation Drives Plant Debris Decomposition Print Microbial decomposition of plant debris ("litter") is a keystone ecosystem process because it regulates nutrient availability, ecosystem productivity, and carbon (C) cycling. Historically, climate (primarily temperature and precipitation) has been thought to regulate the rate of litter decomposition, which then influences the rate at which nutrients become available and C contained in the litter is released back into

  13. Manganese Reduction-Oxidation Drives Plant Debris Decomposition

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

    Manganese Reduction-Oxidation Drives Plant Debris Decomposition Print Microbial decomposition of plant debris ("litter") is a keystone ecosystem process because it regulates nutrient availability, ecosystem productivity, and carbon (C) cycling. Historically, climate (primarily temperature and precipitation) has been thought to regulate the rate of litter decomposition, which then influences the rate at which nutrients become available and C contained in the litter is released back into

  14. Manganese Reduction-Oxidation Drives Plant Debris Decomposition

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

    Manganese Reduction-Oxidation Drives Plant Debris Decomposition Print Microbial decomposition of plant debris ("litter") is a keystone ecosystem process because it regulates nutrient availability, ecosystem productivity, and carbon (C) cycling. Historically, climate (primarily temperature and precipitation) has been thought to regulate the rate of litter decomposition, which then influences the rate at which nutrients become available and C contained in the litter is released back into

  15. Manganese Reduction-Oxidation Drives Plant Debris Decomposition

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

    Manganese Reduction-Oxidation Drives Plant Debris Decomposition Print Microbial decomposition of plant debris ("litter") is a keystone ecosystem process because it regulates nutrient availability, ecosystem productivity, and carbon (C) cycling. Historically, climate (primarily temperature and precipitation) has been thought to regulate the rate of litter decomposition, which then influences the rate at which nutrients become available and C contained in the litter is released back into

  16. EV Everywhere: Maximizing Electric Cars' Range in Extreme Temperatures...

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

    The efficiency and all-electric driving range of plug-in electric vehicles (also known as electric cars or EVs) varies based on a number of factors, including driver habits, ...

  17. Drive reconfiguration mechanism for tracked robotic vehicle

    DOE Patents [OSTI]

    Willis, W. David (Idaho Falls, ID)

    2000-01-01

    Drive reconfiguration apparatus for changing the configuration of a drive unit with respect to a vehicle body may comprise a guide system associated with the vehicle body and the drive unit which allows the drive unit to rotate about a center of rotation that is located at about a point where the drive unit contacts the surface being traversed. An actuator mounted to the vehicle body and connected to the drive unit rotates the drive unit about the center of rotation between a first position and a second position.

  18. Anomalous-viscosity current drive

    DOE Patents [OSTI]

    Stix, T.H.; Ono, M.

    1986-04-25

    The present invention relates to a method and apparatus for maintaining a steady-state current for magnetically confining the plasma in a toroidal magnetic confinement device using anomalous viscosity current drive. A second aspect of this invention relates to an apparatus and method for the start-up of a magnetically confined toroidal plasma.

  19. Organic Rankine Cycle for Light Duty Passenger Vehicles | Department of

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

    Energy for Light Duty Passenger Vehicles Organic Rankine Cycle for Light Duty Passenger Vehicles Dynamic model of organic Rankine cycle with R245fa working fluid and conservative component efficiencies predict power generation in excess of electrical accessory load demand under highway drive cycle PDF icon deer11_hussain.pdf More Documents & Publications Vehicle Fuel Economy Improvement through Thermoelectric Waste Heat Recovery Automotive Thermoelectric Generator Design Issues

  20. Lessons Learned: Devolping Thermochemical Cycles for Solar Heat Storage Applications

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

    Developing Thermochemical Cycles for Solar Heat Storage Applications General Atomics Bunsen Wong IFT\P2013-001 Workshop on TES for CSP - January 8, 2013 Outline * Introduction * Case Study I: Solid Oxide Decomposition * Case Study II: Sulfur Based Cycle * Conclusions 2 Solar heat is used to drive the reduction step of a thermochemical cycle 3 Thermal Reduction Chemical Storage Re- oxidation * Energy is stored in chemical bonds * Energy is recovered upon chemical re-oxidation heat heat

  1. Combined rankine and vapor compression cycles

    DOE Patents [OSTI]

    Radcliff, Thomas D.; Biederman, Bruce P.; Brasz, Joost J.

    2005-04-19

    An organic rankine cycle system is combined with a vapor compression cycle system with the turbine generator of the organic rankine cycle generating the power necessary to operate the motor of the refrigerant compressor. The vapor compression cycle is applied with its evaporator cooling the inlet air into a gas turbine, and the organic rankine cycle is applied to receive heat from a gas turbine exhaust to heat its boiler within one embodiment, a common condenser is used for the organic rankine cycle and the vapor compression cycle, with a common refrigerant, R-245a being circulated within both systems. In another embodiment, the turbine driven generator has a common shaft connected to the compressor to thereby eliminate the need for a separate motor to drive the compressor. In another embodiment, an organic rankine cycle system is applied to an internal combustion engine to cool the fluids thereof, and the turbo charged air is cooled first by the organic rankine cycle system and then by an air conditioner prior to passing into the intake of the engine.

  2. Geothermal Life Cycle Calculator

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Sullivan, John

    This calculator is a handy tool for interested parties to estimate two key life cycle metrics, fossil energy consumption (Etot) and greenhouse gas emission (ghgtot) ratios, for geothermal electric power production. It is based solely on data developed by Argonne National Laboratory for DOEs Geothermal Technologies office. The calculator permits the user to explore the impact of a range of key geothermal power production parameters, including plant capacity, lifetime, capacity factor, geothermal technology, well numbers and depths, field exploration, and others on the two metrics just mentioned. Estimates of variations in the results are also available to the user.

  3. Geothermal Life Cycle Calculator

    SciTech Connect (OSTI)

    Sullivan, John

    2014-03-11

    This calculator is a handy tool for interested parties to estimate two key life cycle metrics, fossil energy consumption (Etot) and greenhouse gas emission (ghgtot) ratios, for geothermal electric power production. It is based solely on data developed by Argonne National Laboratory for DOEs Geothermal Technologies office. The calculator permits the user to explore the impact of a range of key geothermal power production parameters, including plant capacity, lifetime, capacity factor, geothermal technology, well numbers and depths, field exploration, and others on the two metrics just mentioned. Estimates of variations in the results are also available to the user.

  4. Advanced Nuclear Fuel Cycle Options

    SciTech Connect (OSTI)

    Roald Wigeland; Temitope Taiwo; Michael Todosow; William Halsey; Jess Gehin

    2010-06-01

    A systematic evaluation has been conducted of the potential for advanced nuclear fuel cycle strategies and options to address the issues ascribed to the use of nuclear power. Issues included nuclear waste management, proliferation risk, safety, security, economics and affordability, and sustainability. The two basic strategies, once-through and recycle, and the range of possibilities within each strategy, are considered for all aspects of the fuel cycle including options for nuclear material irradiation, separations if needed, and disposal. Options range from incremental changes to todays implementation to revolutionary concepts that would require the development of advanced nuclear technologies.

  5. UGE Scheduler Cycle Time

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

    UGE Scheduler Cycle Time UGE Scheduler Cycle Time Genepool Cycle Time Genepool Daily Genepool Weekly Phoebe Cycle Time Phoebe Daily Phoebe Weekly What is the Scheduler Cycle? The Univa Grid Engine Scheduler cycle performs a number of important tasks, including: Prioritizing Jobs Reserving Resources for jobs requesting more resources (slots / memory) Dispatching jobs or tasks to the compute nodes Evaluating job dependencies The "cycle time" is the length of time it takes the scheduler

  6. Electric Drive Component Manufacturing Facilities

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

    Electric Drive Component Manufacturing Facilities Jon Lutz - Presenter Luke Bokas - Principal Investigator Organization: UQM Technologies, Inc. Email: jlutz@uqm.com Phone: (303) 682-4900 Project ID: ARRAVT026 Project Duration: FY09 to FY15 DOE Vehicle Technologies Program Advanced Power Electronics and Electric Motors R&D FY13 Kickoff Meeting May 2013 Annual Merit Review This presentation does not contain any proprietary or confidential information DOE APEEM FY13 Kickoff Meeting 2 The

  7. Fuel cycle cost uncertainty from nuclear fuel cycle comparison

    SciTech Connect (OSTI)

    Li, J.; McNelis, D.; Yim, M.S.

    2013-07-01

    This paper examined the uncertainty in fuel cycle cost (FCC) calculation by considering both model and parameter uncertainty. Four different fuel cycle options were compared in the analysis including the once-through cycle (OT), the DUPIC cycle, the MOX cycle and a closed fuel cycle with fast reactors (FR). The model uncertainty was addressed by using three different FCC modeling approaches with and without the time value of money consideration. The relative ratios of FCC in comparison to OT did not change much by using different modeling approaches. This observation was consistent with the results of the sensitivity study for the discount rate. Two different sets of data with uncertainty range of unit costs were used to address the parameter uncertainty of the FCC calculation. The sensitivity study showed that the dominating contributor to the total variance of FCC is the uranium price. In general, the FCC of OT was found to be the lowest followed by FR, MOX, and DUPIC. But depending on the uranium price, the FR cycle was found to have lower FCC over OT. The reprocessing cost was also found to have a major impact on FCC.

  8. Aggregated Purchasing and Workplace Charging Can Drive EV Market Growth |

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

    Department of Energy Aggregated Purchasing and Workplace Charging Can Drive EV Market Growth Aggregated Purchasing and Workplace Charging Can Drive EV Market Growth November 24, 2014 - 11:06am Addthis Secretary of Energy Ernest Moniz with the utility industry's first plug-in electric hybrid drivetrain Class 5 bucket truck at the White House event on November 18, 2014. The truck, which is owned by Pacific Gas and Electric (PG&E), features up to 40 miles of all-electric range and

  9. GenDrive Limited | Open Energy Information

    Open Energy Info (EERE)

    GenDrive Limited Jump to: navigation, search Name: GenDrive Limited Place: Cambridge, United Kingdom Zip: CB23 3GY Sector: Renewable Energy, Solar, Wind energy Product: Developing...

  10. NexxtDrive | Open Energy Information

    Open Energy Info (EERE)

    NexxtDrive Jump to: navigation, search Name: NexxtDrive Place: London, England, United Kingdom Zip: WC2N 5HR Product: London-based firm developing electro-mechanical technologies...

  11. Eco Drive Capital Partners | Open Energy Information

    Open Energy Info (EERE)

    Capital Partners Jump to: navigation, search Name: Eco-Drive Capital Partners Place: New York Product: New York-based Eco-Drive is a European-American investment consortium,...

  12. SE Drive Technik | Open Energy Information

    Open Energy Info (EERE)

    Drive Technik Jump to: navigation, search Name: SE Drive Technik Place: Bochum, Germany Zip: 44791 Product: Germany-based R&D subsidiary of Indian turbine maker Suzlon. References:...

  13. National Drive Electric Week | Department of Energy

    Energy Savers [EERE]

    National Drive Electric Week National Drive Electric Week September 16, 2014 - 4:00pm Addthis Celebrate National Drive Electric Week with ways to make your all-electric or plug-in hybrid cars even greener! | Photo courtesy of Dennis Schroeder, National Renewable Energy Laboratory Celebrate National Drive Electric Week with ways to make your all-electric or plug-in hybrid cars even greener! | Photo courtesy of Dennis Schroeder, National Renewable Energy Laboratory Paige Terlip Paige Terlip Former

  14. Traction Drive Systems Breakout | Department of Energy

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

    Traction Drive Systems Breakout Traction Drive Systems Breakout Presentation given at the EV Everywhere Grand Challenge … Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL. PDF icon 9a_miller_ed.pdf More Documents & Publications Power Electronics and Thermal Management Breakout Session Electric Drive Status and Challenges Advanced Power Electronics and Electric Motors (APEEM) R&D Program Overview

  15. Driving/Idling Resources | Department of Energy

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

    Driving/Idling Resources Driving/Idling Resources While transportation efficiency policies are often implemented under local governments, national and state programs can play supportive roles in reducing vehicle miles traveled. Find driving/idling resources below. Alternative Fuels Data Center: Idle Reduction Alternative Fuels Data Center: Idle Reduction Requirements. Back to Transportation

  16. Fluid cooled vehicle drive module

    DOE Patents [OSTI]

    Beihoff, Bruce C.; Radosevich, Lawrence D.; Meyer, Andreas A.; Gollhardt, Neil; Kannenberg, Daniel G.

    2005-11-15

    An electric vehicle drive includes a support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support, in conjunction with other packaging features may form a shield from both external EM/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  17. 2013 Planning Cycle

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

    Projects Expand Projects Skip navigation links Ancillary and Control Area Services (ACS) Practices Forum Attachment K 2015 Planning Cycle 2014 Planning Cycle 2013 Planning...

  18. 2014 Planning Cycle

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

    Projects Expand Projects Skip navigation links Ancillary and Control Area Services (ACS) Practices Forum Attachment K 2015 Planning Cycle 2014 Planning Cycle 2013 Planning...

  19. 2015 Planning Cycle

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

    Projects Expand Projects Skip navigation links Ancillary and Control Area Services (ACS) Practices Forum Attachment K 2015 Planning Cycle 2014 Planning Cycle 2013 Planning...

  20. EV Everywhere: Maximizing All-Electric Range | Department of Energy

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

    As with conventional vehicles, the efficiency and all-electric driving range of plug-in electric vehicles (also known as electric cars or EVs) varies substantially based on driving conditions and habits. For an all-electric vehicle, reduced range will mean that the driver needs to charge more often. Reduced all-electric range in a plug-in hybrid electric vehicle will result in the internal combustion engine turning on more quickly, increasing fuel cost and emissions. There are many things

  1. SAR ambiguous range suppression.

    SciTech Connect (OSTI)

    Doerry, Armin Walter

    2006-09-01

    Pulsed Radar systems suffer range ambiguities, that is, echoes from pulses transmitted at different times arrive at the receiver simultaneously. Conventional mitigation techniques are not always adequate. However, pulse modulation schemes exist that allow separation of ambiguous ranges in Doppler space, allowing easy filtering of problematic ambiguous ranges.

  2. Vehicle Technologies Office: US DRIVE Materials Technical Team...

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

    US DRIVE Materials Technical Team Roadmap Vehicle Technologies Office: US DRIVE Materials Technical Team Roadmap The Materials Technical Team (MTT) of the U.S. DRIVE Partnership ...

  3. Vehicle Technologies Office: U.S. DRIVE 2014 Technical Accomplishments...

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

    Vehicle Technologies Office: U.S. DRIVE 2014 Technical Accomplishments Report Vehicle Technologies Office: U.S. DRIVE 2014 Technical Accomplishments Report The U.S. DRIVE 2014...

  4. Vehicle Technologies Office: U.S. DRIVE 2013 Technical Accomplishments...

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

    U.S. DRIVE 2013 Technical Accomplishments Report Vehicle Technologies Office: U.S. DRIVE 2013 Technical Accomplishments Report The U.S. DRIVE 2013 Highlights of Technical...

  5. Highway vehicle electric drive in the United States : 2009 status and issues.

    SciTech Connect (OSTI)

    Santini, D. J.; Energy Systems

    2011-02-16

    The status of electric drive technology in the United States as of early 2010 is documented. Rapidly evolving electric drive technologies discussed include hybrid electric vehicles, multiple types of plug-in hybrid electric vehicles, and battery electric vehicles. Recent trends for hybrids are quantified. Various plug-in vehicles entering the market in the near term are examined. The technical and economic requirements for electric drive to more broadly succeed in a wider range of highway vehicle applications are described, and implications for the most promising new markets are provided. Federal and selected state government policy measures promoting and preparing for electric drive are discussed. Taking these into account, judgment on areas where increased Clean Cities funds might be most productively focused over the next five years are provided. In closing, the request by Clean Cities for opinion on the broad range of research needs providing near-term support to electric drive is fulfilled.

  6. US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy

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

    Sustainability Partnership Plan | Department of Energy Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability Partnership Plan US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability Partnership Plan This document describes the vision, mission, scope, and governing policies of the U.S. DRIVE Partnership ("Partnership"). Dated December 2014. PDF icon U.S. DRIVE Partnership Plan - December 2014 with Addendum.pdf More

  7. Thermodynamic analysis of adsorption refrigeration cycles

    SciTech Connect (OSTI)

    Saha, B.B.; Akisawa, Atsushi; Kashiwagi, Takao

    1997-12-31

    High- and mid-temperature waste heat can be recovered by using existing heat pump technologies. However, heat utilization near environmental temperatures still faces technical hurdles. Silica gel-water adsorption cycles have a distinct advantage over other systems in their ability to be driven by near-ambient temperature heat. Waste heat (above 60 C) can be exploited by using conventional silica gel-water adsorption chiller. The advanced silica gel-water adsorption chiller can operate effectively by utilizing low-grade waste heat ({approximately}50 C) as the driving source with a cooling source of 30 C. In this paper, the effect of operating temperatures on cycle performance is discussed from the thermodynamic viewpoint. The temperature effectiveness and the entropy generation number on cycle time are analyzed. For a comparatively short cycle time, adsorber/desorber heat exchanger temperature effectiveness reaches up to 92% after only 200 sec. The entropy generation number N{sub s} is defined by the ratio between irreversibility generated during a cycle and availability of the heat transfer fluid. The result showed that for the advanced adsorption cycle the entropy generation number N{sub s} is smaller for hot water temperature between 45 to 55 C with a cooling source of 30 C, while for the conventional cycle N{sub s} is smaller for hot water temperature between 65 to 75 C /with the same cooling source temperature.

  8. Pipeline bottoming cycle study. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

    The technical and economic feasibility of applying bottoming cycles to the prime movers that drive the compressors of natural gas pipelines was studied. These bottoming cycles convert some of the waste heat from the exhaust gas of the prime movers into shaft power and conserve gas. Three typical compressor station sites were selected, each on a different pipeline. Although the prime movers were different, they were similar enough in exhaust gas flow rate and temperature that a single bottoming cycle system could be designed, with some modifications, for all three sites. Preliminary design included selection of the bottoming cycle working fluid, optimization of the cycle, and design of the components, such as turbine, vapor generator and condensers. Installation drawings were made and hardware and installation costs were estimated. The results of the economic assessment of retrofitting bottoming cycle systems on the three selected sites indicated that profitability was strongly dependent upon the site-specific installation costs, how the energy was used and the yearly utilization of the apparatus. The study indicated that the bottoming cycles are a competitive investment alternative for certain applications for the pipeline industry. Bottoming cycles are technically feasible. It was concluded that proper design and operating practices would reduce the environmental and safety hazards to acceptable levels. The amount of gas that could be saved through the year 2000 by the adoption of bottoming cycles for two different supply projections was estimated as from 0.296 trillion ft/sup 3/ for a low supply projection to 0.734 trillion ft/sup 3/ for a high supply projection. The potential market for bottoming cycle equipment for the two supply projections varied from 170 to 500 units of varying size. Finally, a demonstration program plan was developed.

  9. Coordinating Garbage Collection for Arrays of Solid-state Drives

    SciTech Connect (OSTI)

    Kim, Youngjae; Lee, Junghee; Oral, H Sarp; Dillow, David A; Wang, Feiyi; Shipman, Galen M

    2014-01-01

    Although solid-state drives (SSDs) offer significant performance improvements over hard disk drives (HDDs) for a number of workloads, they can exhibit substantial variance in request latency and throughput as a result of garbage collection (GC). When GC conflicts with an I/O stream, the stream can make no forward progress until the GC cycle completes. GC cycles are scheduled by logic internal to the SSD based on several factors such as the pattern, frequency, and volume of write requests. When SSDs are used in a RAID with currently available technology, the lack of coordination of the SSD-local GC cycles amplifies this performance variance. We propose a global garbage collection (GGC) mechanism to improve response times and reduce performance variability for a RAID of SSDs. We include a high-level design of SSD-aware RAID controller and GGC-capable SSD devices and algorithms to coordinate the GGC cycles. We develop reactive and proactive GC coordination algorithms and evaluate their I/O performance and block erase counts for various workloads. Our simulations show that GC coordination by a reactive scheme improves average response time and reduces performance variability for a wide variety of enterprise workloads. For bursty, write-dominated workloads, response time was improved by 69% and performance variability was reduced by 71%. We show that a proactive GC coordination algorithm can further improve the I/O response times by up to 9% and the performance variability by up to 15%. We also observe that it could increase the lifetimes of SSDs with some workloads (e.g. Financial) by reducing the number of block erase counts by up to 79% relative to a reactive algorithm for write-dominant enterprise workloads.

  10. Study of Advantages of PM Drive Motor with Selectable Windings for HEVs

    SciTech Connect (OSTI)

    Otaduy, Pedro J; Hsu, John S; Adams, Donald J

    2007-11-01

    The gains in efficiency and reduction in battery costs that can be achieved by changing the effective number of stator turns in an electric motor are demonstrated by simulating the performance of an electric vehicle on a set of eight standard driving cycles.

  11. High-Temperature Components for Rankine-Cycle-Based Waste Heat Recovery

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

    Systems on Combustion Engines | Department of Energy Components for Rankine-Cycle-Based Waste Heat Recovery Systems on Combustion Engines High-Temperature Components for Rankine-Cycle-Based Waste Heat Recovery Systems on Combustion Engines This poster reports on recent developments, achievements, and capabilities within a virtual environment to predict the dynamic behavior of the Rankine cycle within real driving cycles. PDF icon p-11_janssens.pdf More Documents & Publications Biodiesel

  12. Electric vehicle drive train with contactor protection

    DOE Patents [OSTI]

    Konrad, C.E.; Benson, R.A.

    1994-11-29

    A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor. 3 figures.

  13. Electric vehicle drive train with contactor protection

    DOE Patents [OSTI]

    Konrad, Charles E. (Roanoke, VA); Benson, Ralph A. (Roanoke, VA)

    1994-01-01

    A drive train for an electric vehicle includes a traction battery, a power drive circuit, a main contactor for connecting and disconnecting the traction battery and the power drive circuit, a voltage detector across contacts of the main contactor, and a controller for controlling the main contactor to prevent movement of its contacts to the closed position when the voltage across the contacts exceeds a predetermined threshold, to thereby protect the contacts of the contactor. The power drive circuit includes an electric traction motor and a DC-to-AC inverter with a capacitive input filter. The controller also inhibits the power drive circuit from driving the motor and thereby discharging the input capacitor if the contacts are inadvertently opened during motoring. A precharging contactor is controlled to charge the input filter capacitor prior to closing the main contactor to further protect the contacts of the main contactor.

  14. RangeTables.xlsx

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

    Vcmmg) LET vs. Range in Si for 15 MeV SEE Beams (low LET) 4 He 14 N 0 0.5 1 1.5 0 200 400 600 800 1000 1200 1400 Range in Silicon (m) 4 He 14 N 20 Ne 0 1 2 3 4 5 0 50 100 150...

  15. Truck Duty Cycle and Performance Data Collection and Analysis Program |

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

    Department of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon vss002_knee_2011_o.pdf More Documents & Publications Truck Duty Cycle and Performance Data Collection and Analysis Program Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion Roadmap and Technical White Papers for 21st Century Truck Partnership

  16. Truck Duty Cycle and Performance Data Collection and Analysis Program |

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

    Department of Energy 0 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. PDF icon vss002_knee_2010_o.pdf More Documents & Publications Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion Truck Duty Cycle and Performance Data Collection and Analysis Program 2010 DOE EERE Vehicle Technologies Program Merit Review - Vehicle Systems Sim

  17. MASSACHUSETTS DRIVES PERFORMANCE MEASUREMENT | Department of Energy

    Energy Savers [EERE]

    MASSACHUSETTS DRIVES PERFORMANCE MEASUREMENT MASSACHUSETTS DRIVES PERFORMANCE MEASUREMENT MASSACHUSETTS DRIVES PERFORMANCE MEASUREMENT Massachusetts' longstanding statewide Mass Save energy efficiency program, supported by ratepayer funds and sponsored by utilities, has resulted in the state being named first in energy efficiency by the American Council for an Energy Efficient Economy for the past four years. Even with this accolade, the state wanted to test strategies to achieve more-and

  18. Electric Drive Transportation Association Conference | Department of Energy

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

    Electric Drive Transportation Association Conference Electric Drive Transportation Association Conference Addthis Test Drive 1 of 5 Test Drive Deputy Assistant Secretary for Transportation Reuben Sarkar drives a Chevrolet Spark EV during the Electric Drive Transportation Association conference in Indianapolis, Indiana on May 20, 2014. The conference brings together industry leaders who are advancing electric vehicle technologies and expanding the nation's charging infrastructure. Image: Photo

  19. High Efficiency Driving Electronics for General Illumination...

    Office of Scientific and Technical Information (OSTI)

    Driving Electronics for General Illumination LED Luminaires Upadhyay, Anand 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION New generation of standalone LED driver platforms...

  20. Centerless-drive solar collector system

    SciTech Connect (OSTI)

    Butler, B. L.

    1985-12-24

    A parabolic-trough solar collector system is disclosed, with each collector driven to track the sun using a ring driven in centerless fashion. The parabolic troughs are made of laminated plywood or molded or formed of plastics or metals. The drive motor moves a flexible belt, i.e., chain or cable, which is routed about the drive ring on each collector. The motion of the cable moves all drive rings together to track the sun. A photodetector senses the position of the sun and provides the signal needed to drive the collectors in the correct direction.

  1. DistributionDrive | Open Energy Information

    Open Energy Info (EERE)

    search Name: DistributionDrive Place: Addison, Texas Zip: 75001 Product: Supplier of Biodiesel, Straight Vegetable Oil (SVO), Recycled Vegetable Oil (WVO) and Engine Conversion...

  2. Grand Challenge Portfolio: Driving Innovations in Industrial...

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

    8 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 PDF icon grandchallengesportfoliopg8.pdf More Documents & Publications ...

  3. Grand Challenge Portfolio: Driving Innovations in Industrial...

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

    6 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 6 PDF icon grandchallengesportfoliopg6.pdf More Documents & Publications ...

  4. Grand Challenge Portfolio: Driving Innovations in Industrial...

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

    9 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 9 PDF icon grandchallengesportfoliopg9.pdf More Documents & Publications ...

  5. Advanced Electric Drive Vehicles ? A Comprehensive Education...

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

    D.C. PDF icon tiarravt034ferdowsi2010o.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...

  6. Advanced Electric Drive Vehicles ? A Comprehensive Education...

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

    PDF icon arravt034tiferdowsi2011p.pdf More Documents & Publications Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program...

  7. Electric Drive Transportation Association EDTA | Open Energy...

    Open Energy Info (EERE)

    Transportation Association EDTA Jump to: navigation, search Name: Electric Drive Transportation Association (EDTA) Product: EDTA is the preeminent U.S. industry association...

  8. Electric-Drive Vehicle Basics (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-04-01

    Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

  9. On-road evaluation of advanced hybrid electric vehicles over a wide range of ambient temperatures.

    SciTech Connect (OSTI)

    Carlson, R.; Duoba, M. J.; Bocci, D.; Lohse-Busch, H.

    2007-01-01

    In recent years, Hybrid Electric Vehicles (HEV's) have become a production viable and effective mode of efficient transportation. HEV's can provide increased fuel economy over convention technology vehicle, but these advantages can be affected dramatically by wide variations in operating temperatures. The majority of data measured for benchmarking HEV technologies is generated from ambient test cell temperatures at 22 C. To investigate cold and hot temperature affects on HEV operation and efficiency, an on-road evaluation protocol is defined and conducted over a six month study at widely varying temperatures. Two test vehicles, the 2007 Toyota Camry HEV and 2005 Ford Escape HEV, were driven on a pre-defined urban driving route in ambient temperatures ranging from -14 C to 31 C. Results from the on-road evaluation were also compared and correlated to dynamometer testing of the same drive cycle. Results from this on-road evaluation show the battery power control limits and engine operation dramatically change with temperature. These changes decrease fuel economy by more than two times at -14 C as compared to 25 C. The two vehicles control battery temperature in different manners. The Escape HEV uses the air conditioning system to provide cool air to the batteries at high temperatures and is therefore able to maintain battery temperature to less than 33 C. The Camry HEV uses cabin air to cool the batteries. The observed maximum battery temperature was 44 C.

  10. Control rod drive hydraulic system

    DOE Patents [OSTI]

    Ose, Richard A. (San Jose, CA)

    1992-01-01

    A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.

  11. ARM - The Hydrologic Cycle

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

    Hydrologic Cycle Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans The Hydrologic Cycle The hydrologic cycle is the cycle through which water passes from sea to land and from land to sea. Water vapor enters the air through the evaporation of water. Water vapor in the air eventually condenses

  12. Polar-direct-drive experiments on the National Ignition Facility

    SciTech Connect (OSTI)

    Hohenberger, M.; Radha, P. B.; Myatt, J. F.; Marozas, J. A.; Marshall, F. J.; Michel, D. T.; Regan, S. P.; Seka, W.; Shvydky, A.; Sangster, T. C.; Betti, R.; Boehly, T. R.; Bonino, M. J.; Collins, T. J. B.; Craxton, R. S.; Delettrez, J. A.; Edgell, D. H.; Epstein, R.; Fiksel, G.; Froula, D. H.; and others

    2015-05-15

    To support direct-drive inertial confinement fusion experiments at the National Ignition Facility (NIF) [G. H. Miller, E. I. Moses, and C. R. Wuest, Opt. Eng. 43, 2841 (2004)] in its indirect-drive beam configuration, the polar-direct-drive (PDD) concept [S. Skupsky et al., Phys. Plasmas 11, 2763 (2004)] has been proposed. Ignition in PDD geometry requires direct-drivespecific beam smoothing, phase plates, and repointing the NIF beams toward the equator to ensure symmetric target irradiation. First experiments to study the energetics and preheat in PDD implosions at the NIF have been performed. These experiments utilize the NIF in its current configuration, including beam geometry, phase plates, and beam smoothing. Room-temperature, 2.2-mm-diam plastic shells filled with D{sub 2} gas were imploded with total drive energies ranging from ?500 to 750?kJ with peak powers of 120 to 180 TW and peak on-target irradiances at the initial target radius from 8??10{sup 14} to 1.2??10{sup 15?}W/cm{sup 2}. Results from these initial experiments are presented, including measurements of shell trajectory, implosion symmetry, and the level of hot-electron preheat in plastic and Si ablators. Experiments are simulated with the 2-D hydrodynamics code DRACO including a full 3-D ray-trace to model oblique beams, and models for nonlocal electron transport and cross-beam energy transport (CBET). These simulations indicate that CBET affects the shell symmetry and leads to a loss of energy imparted onto the shell, consistent with the experimental data.

  13. RangeTables.xls

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

    (MeVcmmg) LET vs. Range in Si for 25 MeV SEE Beams (low LET) 4 He 14 N 0 0.5 1 1.5 0 600 1200 1800 2400 3000 3600 4 He 14 N 22 Ne 0 1 2 3 4 5 6 7 8 9 10 0 100 200 300 400 500...

  14. RangeTables.xlsx

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

    30 35 40 45 eVcmmg) LET vs. Range in Si for 40 MeV SEE Beams 14 N 20 Ne 40 Ar 0 3 6 9 0 400 800 1200 1600 2000 2400 1 H 0 0.1 0.2 40 Ar 78 Kr 0 5 10 15 20 0 100 200 300 400 500...

  15. Chapter 18: Variable Frequency Drive Evaluation Protocol

    SciTech Connect (OSTI)

    Romberger, J.

    2014-11-01

    An adjustable-speed drive (ASD) includes all devices that vary the speed of a rotating load, including those that vary the motor speed and linkage devices that allow constant motor speed while varying the load speed. The Variable Frequency Drive Evaluation Protocol presented here addresses evaluation issues for variable-frequency drives (VFDs) installed on commercial and industrial motor-driven centrifugal fans and pumps for which torque varies with speed. Constant torque load applications, such as those for positive displacement pumps, are not covered by this protocol. Other ASD devices, such as magnetic drive, eddy current drives, variable belt sheave drives, or direct current motor variable voltage drives, are also not addressed. The VFD is by far the most common type of ASD hardware. With VFD speed control on a centrifugal fan or pump motor, energy use follows the affinity laws, which state that the motor electricity demand is a cubic relationship to speed under ideal conditions. Therefore, if the motor runs at 75% speed, the motor demand will ideally be reduced to 42% of full load power; however, with other losses it is about 49% of full load power.

  16. Adjustable Speed Drive Part-Load Efficiency - Motor Tip Sheet #11

    SciTech Connect (OSTI)

    2008-07-01

    An adjustable speed drive (ASD) is a device that controls the rotational speed of motor-driven equipment. Variable frequency drives (VFDs), the most common type of ASDs, efficiently meet varying process requirements by adjusting the frequency and voltage of the power supplied to an AC motor to enable it to operate over a wide speed range. External sensors monitor flow, liquid levels, or pressure and then transmit a signal to a controller that adjusts the frequency and speed to match process requirements.

  17. Ride and Drive Webinar | Department of Energy

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

    Webinar Ride and Drive Webinar Learn how on-site plug-in electric vehicle Ride and Drives can create value for your organization, your employees, and your community. Read the text version. Listen to this webinar and follow along using the slides below to learn how on-site plug-in electric vehicle (PEV) Ride and Drives can create value for your organization, your employees, and your community. Participants will learn about the value of creating PEV user experiences for increased PEV adoption and

  18. Wind turbine ring/shroud drive system

    DOE Patents [OSTI]

    Blakemore, Ralph W.

    2005-10-04

    A wind turbine capable of driving multiple electric generators having a ring or shroud structure for reducing blade root bending moments, hub loads, blade fastener loads and pitch bearing loads. The shroud may further incorporate a ring gear for driving an electric generator. In one embodiment, the electric generator may be cantilevered from the nacelle such that the gear on the generator drive shaft is contacted by the ring gear of the shroud. The shroud also provides protection for the gearing and aids in preventing gear lubricant contamination.

  19. Google Drive for Work | Department of Energy

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

    Google Drive for Work Google Drive for Work Computer.png Welcome to the U.S. Department of Energy Pilot Program, Google Drive for Work. Please read and sign the Terms of Use and Privacy Statement below. DISCLAIMER All data is owned by DOE and may be monitored, intercepted, recorded, read, copied, or captured in any manner and disclosed in any manner, by authorized personnel. THERE IS NO RIGHT OF PRIVACY IN THIS SYSTEM, and system personnel may give to law enforcement officials any potential

  20. Universal power transistor base drive control unit

    DOE Patents [OSTI]

    Gale, A.R.; Gritter, D.J.

    1988-06-07

    A saturation condition regulator system for a power transistor is disclosed which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition. 2 figs.

  1. Universal power transistor base drive control unit

    DOE Patents [OSTI]

    Gale, Allan R. (Allen Park, MI); Gritter, David J. (Racine, WI)

    1988-01-01

    A saturation condition regulator system for a power transistor which achieves the regulation objectives of a Baker clamp but without dumping excess base drive current into the transistor output circuit. The base drive current of the transistor is sensed and used through an active feedback circuit to produce an error signal which modulates the base drive current through a linearly operating FET. The collector base voltage of the power transistor is independently monitored to develop a second error signal which is also used to regulate base drive current. The current-sensitive circuit operates as a limiter. In addition, a fail-safe timing circuit is disclosed which automatically resets to a turn OFF condition in the event the transistor does not turn ON within a predetermined time after the input signal transition.

  2. Driving the Future | Argonne National Laboratory

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

    Driving the Future At Argonne National Laboratory's Center for Transportation Research, our goal is to accelerate the development and deployment of vehicle technologies that help reduce our nation's petroleum consumption and greenhouse gas emissions. PDF icon es_adv-vehicles

  3. Consider Steam Turbine Drives for Rotating Equipment

    SciTech Connect (OSTI)

    Not Available

    2006-01-01

    This revised ITP tip sheet on steam turbine drives for rotating equipment provides how-to advice for improving the system using low-cost, proven practices and technologies.

  4. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, S.H.

    1988-03-10

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are colliminated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. 1 fig.

  5. Water Cycle Pilot Study

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

    1 Water Cycle Pilot Study To learn more about Earth's water cycle, the U.S. Department of Energy (DOE) has established a multi-laboratory science team representing five DOE national laboratories: Argonne, Brookhaven, Lawrence Berkeley, Los Alamos, and Oak Ridge. The science team will conduct a three- year Water Cycle Pilot Study within the ARM SGP CART site, primarily in the Walnut River Watershed east of Wichita, Kansas. The host facility in the Walnut River Watershed is the Atmospheric

  6. Magnetically Coupled Adjustable Speed Motor Drives

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

    Magnetically Coupled Adjustable Speed Motor Drives Alternating current electric motors rotate at a nearly constant speed that is determined by motor design and line frequency. Energy savings of 50% or more may be available when fxed speed systems are modifed to allow for variable load requirements of a centrifugal fan or pump. 1 Loads that vary by 30% of full load over time offer good opportunities for cost-effective adjustable speed drive (ASD) retrofts. Market assessment studies indicate that

  7. Direct-drive field actuator motors

    DOE Patents [OSTI]

    Grahn, Allen R. (Salt Lake City, UT)

    1995-01-01

    A high-torque, low speed, positive-drive field actuator motor including a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately.

  8. Collaboration drives achievement in protein structure research

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

    Collaboration drives achievement in protein structure research Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:September 2015 all issues All Issues » submit Collaboration drives achievement in protein structure research By tracking down how bacterial defense systems work, the scientists can potentially fight infectious diseases and genetic disorders November 1, 2014 Thomas Terwilliger Thomas Terwilliger Contact Linda Anderman Email When a recent print issue of

  9. Direct-drive field actuator motors

    DOE Patents [OSTI]

    Grahn, A.R.

    1995-07-11

    A high-torque, low speed, positive-drive field actuator motor is disclosed including a stator carrying at least one field actuator which changes in dimension responsive to application of an energy field, and at least one drive shoe movable by the dimensional changes of the field actuator to contact and move a rotor element with respect to the stator. Various embodiments of the motor are disclosed, and the rotor element may be moved linearly or arcuately. 37 figs.

  10. Lab school supply drive starts July 15

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

    Lab school supply drive starts July 15 Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Lab school supply drive starts July 15 Anyone can donate supplies through the Lab's Community Programs Office July 1, 2013 Del Norte Credit Union's Baxter Bear takes a moment to pose with some of the backpacks filled with school supplies that will help students start their school year off right Del Norte

  11. Semiclassical instability of dynamical warp drives

    SciTech Connect (OSTI)

    Finazzi, Stefano; Liberati, Stefano; Barcelo, Carlos

    2009-06-15

    Warp drives are very interesting configurations in general relativity: At least theoretically, they provide a way to travel at superluminal speeds, albeit at the cost of requiring exotic matter to exist as solutions of Einstein's equations. However, even if one succeeded in providing the necessary exotic matter to build them, it would still be necessary to check whether they would survive to the switching on of quantum effects. Semiclassical corrections to warp-drive geometries have been analyzed only for eternal warp-drive bubbles traveling at fixed superluminal speeds. Here, we investigate the more realistic case in which a superluminal warp drive is created out of an initially flat spacetime. First of all we analyze the causal structure of eternal and dynamical warp-drive spacetimes. Then we pass to the analysis of the renormalized stress-energy tensor (RSET) of a quantum field in these geometries. While the behavior of the RSET in these geometries has close similarities to that in the geometries associated with gravitational collapse, it shows dramatic differences too. On one side, an observer located at the center of a superluminal warp-drive bubble would generically experience a thermal flux of Hawking particles. On the other side, such Hawking flux will be generically extremely high if the exotic matter supporting the warp drive has its origin in a quantum field satisfying some form of quantum inequalities. Most of all, we find that the RSET will exponentially grow in time close to, and on, the front wall of the superluminal bubble. Consequently, one is led to conclude that the warp-drive geometries are unstable against semiclassical backreaction.

  12. Driving Economic Growth: Advanced Technology Vehicles Manufacturing |

    Office of Environmental Management (EM)

    Department of Energy Driving Economic Growth: Advanced Technology Vehicles Manufacturing Driving Economic Growth: Advanced Technology Vehicles Manufacturing With $8 billion in loans and commitments to projects that have supported the production of more than 4 million fuel-efficient cars and more than 35,000 direct jobs across eight states, the Advanced Technology Vehicles Manufacturing (ATVM) loan program has played a key role in helping the American auto industry propel the resurgence of

  13. Soil metagenomics and carbon cycling

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

    Biosecurity, and Health Environmental Microbiology Soil metagenomics and carbon cycling Soil metagenomics and carbon cycling Establishing a foundational understanding...

  14. DOE Tour of Zero Floorplans: Hickory Drive by Glastonbury Housesmith |

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

    Department of Energy Hickory Drive by Glastonbury Housesmith DOE Tour of Zero Floorplans: Hickory Drive by Glastonbury Housesmith DOE Tour of Zero Floorplans: Hickory Drive by Glastonbury Housesmith

  15. Property:Wave Period Range(s) | Open Energy Information

    Open Energy Info (EERE)

    Property Edit with form History Property:Wave Period Range(s) Jump to: navigation, search Property Name Wave Period Range(s) Property Type String Pages using the property "Wave...

  16. Range imaging laser radar

    DOE Patents [OSTI]

    Scott, Marion W. (Albuquerque, NM)

    1990-01-01

    A laser source is operated continuously and modulated periodically (typicy sinusoidally). A receiver imposes another periodic modulation on the received optical signal, the modulated signal being detected by an array of detectors of the integrating type. Range to the target determined by measuring the phase shift of the intensity modulation on the received optical beam relative to a reference. The receiver comprises a photoemitter for converting the reflected, periodically modulated, return beam to an accordingly modulated electron stream. The electron stream is modulated by a local demodulation signal source and subsequently converted back to a photon stream by a detector. A charge coupled device (CCD) array then averages and samples the photon stream to provide an electrical signal in accordance with the photon stream.

  17. Workplace Charging Challenge: Workplace PEV Ride and Drive | Department of

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

    Energy Workplace PEV Ride and Drive Workplace Charging Challenge: Workplace PEV Ride and Drive Workplace Charging Challenge: Workplace PEV Ride and Drive Workplace plug-in electric vehicle (PEV) Ride and Drive events are one of the most effective ways to drive PEV adoption. By providing staff the opportunity to experience PEVs first hand, they can learn about the benefits of driving electric, test out the latest PEV technology, and learn about charging equipment in one concerted effort.

  18. Vehicle Technologies Office: U.S. DRIVE | Department of Energy

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

    Vehicle Technologies Office: U.S. DRIVE Vehicle Technologies Office: U.S. DRIVE Logo for U.S. DRIVE - Driving Research and Innovation for Vehicle efficiency and Energy sustainability. U.S. DRIVE stands for Driving Research and Innovation for Vehicle efficiency and Energy sustainability. It is a non-binding and voluntary government-industry partnership focused on advanced automotive and related energy infrastructure technology research and development (R&D). Specifically, the Partnership is a

  19. Charging Up with the Electric Drive Transportation Association | Department

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

    of Energy Charging Up with the Electric Drive Transportation Association Charging Up with the Electric Drive Transportation Association May 20, 2014 - 4:51pm Addthis Test Drive 1 of 5 Test Drive Deputy Assistant Secretary for Transportation Reuben Sarkar drives a Chevrolet Spark EV during the Electric Drive Transportation Association conference in Indianapolis, Indiana on May 20, 2014. The conference brings together industry leaders who are advancing electric vehicle technologies and

  20. MHK Technologies/Anaconda bulge tube drives turbine | Open Energy...

    Open Energy Info (EERE)

    Anaconda bulge tube drives turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Anaconda bulge tube drives turbine.jpg Technology Profile...

  1. Strategies for Marketing and Driving Demand for Commercial Financing...

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

    Marketing and Driving Demand for Commercial Financing Products Strategies for Marketing and Driving Demand for Commercial Financing Products Better Buildings Neighborhood Program ...

  2. US DRIVE Electrochemical Energy Storage Technical Team Roadmap...

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

    Electrochemical Energy Storage Technical Team Roadmap US DRIVE Electrochemical Energy Storage Technical Team Roadmap This U.S. DRIVE electrochemical energy storage roadmap ...

  3. Performance and mix measurements of indirect drive Cu doped Be...

    Office of Scientific and Technical Information (OSTI)

    Performance and mix measurements of indirect drive Cu doped Be implosions Citation Details In-Document Search Title: Performance and mix measurements of indirect drive Cu doped Be...

  4. Impact of Driving Behavior on PHEV Fuel Consumption for Different...

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

    Driving Behavior on PHEV Fuel Consumption for Different Powertrain, Component Sizes and Control Impact of Driving Behavior on PHEV Fuel Consumption for Different Powertrain, ...

  5. EV Everywhere Workshop: Traction Drive Systems Breakout Group...

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

    EV Everywhere Workshop: Traction Drive Systems Breakout Group Report Presentation given at the EV Everywhere Grand Challenge Electric Drive (Power Electronics and Electric ...

  6. EV Everywhere Electric Drive Workshop: Preliminary Target-Setting...

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

    EV Everywhere Electric Drive Workshop: Preliminary Target-Setting Framework Presentation given at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric ...

  7. EV Everywhere EV Everywhere Grand Challenge - Electric Drive...

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

    - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) ...

  8. EV Everywhere Grand Challenge - Electric Drive (Power Electronics...

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

    - Electric Drive (Power Electronics and Electric Machines) Workshop EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop List of ...

  9. Center for Electric Drive Transportation at the University of...

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

    Electric Drive Transportation at the University of Michigan - Dearborn Center for Electric Drive Transportation at the University of Michigan - Dearborn 2012 DOE Hydrogen and Fuel ...

  10. High-Voltage Solid Polymer Batteries for Electric Drive Vehicles...

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

    High-Voltage Solid Polymer Batteries for Electric Drive Vehicles High-Voltage Solid Polymer Batteries for Electric Drive Vehicles 2012 DOE Hydrogen and Fuel Cells Program and ...

  11. Airlines & Aviation Alternative Fuels: Our Drive to Be Early...

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

    Airlines & Aviation Alternative Fuels: Our Drive to Be Early Market Adopters Airlines & Aviation Alternative Fuels: Our Drive to Be Early Market Adopters Plenary III: Early Market ...

  12. Electric Drive and Advanced Battery and Components Testbed (EDAB...

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

    Evaluation PDF icon vss033carlson2011o.pdf More Documents & Publications Electric Drive and Advanced Battery and Components Testbed (EDAB) Electric Drive and Advanced Battery...

  13. Electric Drive Component Manufacturing: Magna E-Car Systems of...

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

    PDF icon arravt027apepeaslee2012p.pdf More Documents & Publications Electric Drive Component Manufacturing: Magna E-Car Systems of America, Inc. Electric Drive Component...

  14. Using Partnerships to Drive Demand and Provide Services in Communities...

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

    Partnerships to Drive Demand and Provide Services in Communities Using Partnerships to Drive Demand and Provide Services in Communities Better Buildings Neighborhood Program...

  15. Computer-Aided Engineering for Electric Drive Vehicle Batteries...

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

    Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) 2011 DOE Hydrogen and Fuel Cells...

  16. Electric Drive Component Manufacturing: Magna E-Car Systems of...

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

    PDF icon arravt027apethomas2011p.pdf More Documents & Publications Electric Drive Component Manufacturing: Magna E-Car Systems of America, Inc. Electric Drive Component...

  17. Solutia: Utilizing Sub-Metering to Drive Energy Project Approvals...

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

    Utilizing Sub-Metering to Drive Energy Project Approvals Through Data Solutia: Utilizing Sub-Metering to Drive Energy Project Approvals Through Data This case study describes how...

  18. How Exhaust Emissions Drive Diesel Engine Fuel Efficiency | Department...

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

    How Exhaust Emissions Drive Diesel Engine Fuel Efficiency How Exhaust Emissions Drive Diesel Engine Fuel Efficiency 2004 Diesel Engine Emissions Reduction (DEER) Conference...

  19. Ride and Drive Evaluation Results | Department of Energy

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

    Ride and Drive Evaluation Results Ride and Drive Evaluation Results 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: U.S. Department of Energy PDF icon...

  20. Thirteen States Receive Energy Department Awards to Drive Greater...

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

    States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save...

  1. Dielectric Wakefield Accelerator to drive the future FEL Light Source.

    SciTech Connect (OSTI)

    Jing, C.; Power, J.; Zholents, A. )

    2011-04-20

    X-ray free-electron lasers (FELs) are expensive instruments and a large part of the cost of the entire facility is driven by the accelerator. Using a high-energy gain dielectric wake-field accelerator (DWA) instead of the conventional accelerator may provide a significant cost saving and reduction of the facility size. In this article, we investigate using a collinear dielectric wakefield accelerator to provide a high repetition rate, high current, high energy beam to drive a future FEL x-ray light source. As an initial case study, a {approx}100 MV/m loaded gradient, 850 GHz quartz dielectric based 2-stage, wakefield accelerator is proposed to generate a main electron beam of 8 GeV, 50 pC/bunch, {approx}1.2 kA of peak current, 10 x 10 kHz (10 beamlines) in just 100 meters with the fill factor and beam loading considered. This scheme provides 10 parallel main beams with one 100 kHz drive beam. A drive-to-main beam efficiency {approx}38.5% can be achieved with an advanced transformer ratio enhancement technique. rf power dissipation in the structure is only 5 W/cm{sup 2} in the high repetition rate, high gradient operation mode, which is in the range of advanced water cooling capability. Details of study presented in the article include the overall layout, the transform ratio enhancement scheme used to increase the drive to main beam efficiency, main wakefield linac design, cooling of the structure, etc.

  2. Polar-direct-drive experiments on the National Ignition Facility

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

    Hohenberger, M.; Radha, P. B.; Myatt, J. F.; LePape, S.; Marozas, J. A.; Marshall, F. J.; Michel, D. T.; Regan, S. P.; Seka, W.; Shvydky, A.; et al

    2015-05-11

    To support direct-drive inertial confinement fusion experiments at the National Ignition Facility (NIF) [G. H. Miller, E. I. Moses, and C. R. Wuest, Opt. Eng. 43, 2841 (2004)] in its indirect-drive beam configuration, the polar-direct-drive (PDD) concept [S. Skupsky et al., Phys. Plasmas 11, 2763 (2004)] has been proposed. Ignition in PDD geometry requires direct-drive–specific beam smoothing, phase plates, and repointing the NIF beams toward the equator to ensure symmetric target irradiation. First experiments to study the energetics and preheat in PDD implosions at the NIF have been performed. These experiments utilize the NIF in its current configuration, including beammore » geometry, phase plates, and beam smoothing. Room-temperature, 2.2-mm-diam plastic shells filled with D₂ gas were imploded with total drive energies ranging from ~500 to 750 kJ with peak powers of 120 to 180 TW and peak on-target irradiances at the initial target radius from 8 10¹⁴ to 1.2 10¹⁵W/cm². Results from these initial experiments are presented, including measurements of shell trajectory, implosion symmetry, and the level of hot-electron preheat in plastic and Si ablators. Experiments are simulated with the 2-D hydrodynamics code DRACO including a full 3-D ray-trace to model oblique beams, and models for nonlocal electron transport and cross-beam energy transport (CBET). These simulations indicate that CBET affects the shell symmetry and leads to a loss of energy imparted onto the shell, consistent with the experimental data.« less

  3. Life Cycle Cost Estimate

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1997-03-28

    Life-cycle costs (LCCs) are all the anticipated costs associated with a project or program alternative throughout its life. This includes costs from pre-operations through operations or to the end of the alternative.This chapter discusses life cycle costs and the role they play in planning.

  4. Power Plant Cycling Costs

    SciTech Connect (OSTI)

    Kumar, N.; Besuner, P.; Lefton, S.; Agan, D.; Hilleman, D.

    2012-07-01

    This report provides a detailed review of the most up to date data available on power plant cycling costs. The primary objective of this report is to increase awareness of power plant cycling cost, the use of these costs in renewable integration studies and to stimulate debate between policymakers, system dispatchers, plant personnel and power utilities.

  5. Indirect-fired gas turbine dual fuel cell power cycle

    DOE Patents [OSTI]

    Micheli, Paul L. (Sacramento, CA); Williams, Mark C. (Morgantown, WV); Sudhoff, Frederick A. (Morgantown, WV)

    1996-01-01

    A fuel cell and gas turbine combined cycle system which includes dual fuel cell cycles combined with a gas turbine cycle wherein a solid oxide fuel cell cycle operated at a pressure of between 6 to 15 atms tops the turbine cycle and is used to produce CO.sub.2 for a molten carbonate fuel cell cycle which bottoms the turbine and is operated at essentially atmospheric pressure. A high pressure combustor is used to combust the excess fuel from the topping fuel cell cycle to further heat the pressurized gas driving the turbine. A low pressure combustor is used to combust the excess fuel from the bottoming fuel cell to reheat the gas stream passing out of the turbine which is used to preheat the pressurized air stream entering the topping fuel cell before passing into the bottoming fuel cell cathode. The CO.sub.2 generated in the solid oxide fuel cell cycle cascades through the system to the molten carbonate fuel cell cycle cathode.

  6. Range Resources | Open Energy Information

    Open Energy Info (EERE)

    Range Resources Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titleRangeResources&oldid612320...

  7. Neutron range spectrometer

    DOE Patents [OSTI]

    Manglos, Stephen H. (East Syracuse, NY)

    1989-06-06

    A neutron range spectrometer and method for determining the neutron energy spectrum of a neutron emitting source are disclosed. Neutrons from the source are collimnated along a collimation axis and a position sensitive neutron counter is disposed in the path of the collimated neutron beam. The counter determines positions along the collimation axis of interactions between the neutrons in the neutron beam and a neutron-absorbing material in the counter. From the interaction positions, a computer analyzes the data and determines the neutron energy spectrum of the neutron beam. The counter is preferably shielded and a suitable neutron-absorbing material is He-3. The computer solves the following equation in the analysis: ##EQU1## where: N(x).DELTA.x=the number of neutron interactions measured between a position x and x+.DELTA.x, A.sub.i (E.sub.i).DELTA.E.sub.i =the number of incident neutrons with energy between E.sub.i and E.sub.i +.DELTA.E.sub.i, and C=C(E.sub.i)=N .sigma.(E.sub.i) where N=the number density of absorbing atoms in the position sensitive counter means and .sigma. (E.sub.i)=the average cross section of the absorbing interaction between E.sub.i and E.sub.i +.DELTA.E.sub.i.

  8. Progress of the Computer-Aided Engineering of Electric Drive Vehicle Batteries (CAEBAT) (Presentation)

    SciTech Connect (OSTI)

    Pesaran, A. A.; Han, T.; Hartridge, S.; Shaffer, C.; Kim, G. H.; Pannala, S.

    2013-06-01

    This presentation, Progress of Computer-Aided Engineering of Electric Drive Vehicle Batteries (CAEBAT) is about simulation and computer-aided engineering (CAE) tools that are widely used to speed up the research and development cycle and reduce the number of build-and-break steps, particularly in the automotive industry. Realizing this, DOE?s Vehicle Technologies Program initiated the CAEBAT project in April 2010 to develop a suite of software tools for designing batteries.

  9. Gas turbine CHP leads Italy`s energy drive

    SciTech Connect (OSTI)

    Jeffs, E.

    1995-11-01

    When Italy abandoned its nuclear power program, it was the signal for the electricity market to open to industrial CHP and independent power production. This move raised energy efficiency and cut pollution, as a prelude to the privatization of the electric utility system. The Privatization of ENEL, the National Electricity Authority, is expected to happen next year, but not before a significant component of independent power generation is already in place. ENEL itself was only created in 1963 and some of the former power companies have reemerged as the leading IPP`s. Although combined cycle and IPP capacity is only 5000 MW, it is expected to increase to 15,000 MW by the year 2000. In abandoning nuclear power, Italy may have given up on an unquestionably clean thermal energy source, but an intensive drive into private power with combined cycle, repowering, and industrial CHP schemes is achieving some worthwhile improvements in energy efficiency, and a cleaner environment than what went before. 3 figs., 1 tab.

  10. Drive Less, Save More | Department of Energy

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

    Drive Less, Save More Drive Less, Save More May 24, 2011 - 12:31pm Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For someone who works in the Vehicle Technologies Program, I actually don't spend that much time in my automobile. I usually get around using a combination of public transit, my bike, and my own two feet. But I'm an exception. In the U.S., the vehicle miles travelled per person is actually twice as high as it is in Western Europe and three times higher

  11. Electrifying Your Drive | Department of Energy

    Office of Environmental Management (EM)

    Electrifying Your Drive Electrifying Your Drive April 27, 2010 - 7:30am Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program For anyone who grew up watching The Jetsons (or Back to the Future, depending on your generation), the "Car of the Future!" flew through the skies with the greatest of ease. Although most of us have given up on our hopes of a flying car, anything beyond the internal combustion engine has seemed hopelessly out of reach until recently.

  12. Duty Cycle Software Model

    Energy Science and Technology Software Center (OSTI)

    2010-12-31

    The Software consists of code which is capable of processing a large volume of data to create a “duty cycle” which is representative of how equipment will function under certain conditions.

  13. A combined cycle engine test facility

    SciTech Connect (OSTI)

    Engers, R.; Cresci, D.; Tsai, C.

    1995-09-01

    Rocket-Based Combined-Cycle (RBCC) engines intended for missiles and/or space launch applications incorporate features of rocket propulsion systems operating in concert with airbreathing engine cycles. Performance evaluation of these types of engines, which are intended to operate from static sea level take-off to supersonic cruise or accerlerate to orbit, requires ground test capabilities which integrate rocket component testing with airbreathing engine testing. A combined cycle engine test facility has been constructed in the General Applied Science Laboratories, Inc. (GASL) Aeropropulsion Test Laboratory to meet this requirement. The facility was designed to support the development of an innovative combined cycle engine concept which features a rocket based ramjet combustor. The test requirements included the ability to conduct tests in which the propulsive force was generated by rocket only, the ramjet only and simultaneous rocket and ramjet power (combined cycle) to evaluate combustor operation over the entire engine cycle. The test facility provides simulation over the flight Mach number range of 0 to 8 and at various trajectories. The capabilities of the combined cycle engine test facility are presented.

  14. Waste Stream Analyses for Nuclear Fuel Cycles

    SciTech Connect (OSTI)

    N. R. Soelberg

    2010-08-01

    A high-level study was performed in Fiscal Year 2009 for the U.S. Department of Energy (DOE) Office of Nuclear Energy (NE) Advanced Fuel Cycle Initiative (AFCI) to provide information for a range of nuclear fuel cycle options (Wigeland 2009). At that time, some fuel cycle options could not be adequately evaluated since they were not well defined and lacked sufficient information. As a result, five families of these fuel cycle options are being studied during Fiscal Year 2010 by the Systems Analysis Campaign for the DOE NE Fuel Cycle Research and Development (FCRD) program. The quality and completeness of data available to date for the fuel cycle options is insufficient to perform quantitative radioactive waste analyses using recommended metrics. This study has been limited thus far to qualitative analyses of waste streams from the candidate fuel cycle options, because quantitative data for wastes from the front end, fuel fabrication, reactor core structure, and used fuel for these options is generally not yet available.

  15. 10 MWe power cycle

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

    MWe power cycle - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs Advanced Nuclear

  16. ARM - Carbon Cycle Balance

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

    Carbon Cycle Balance Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Carbon Cycle Balance The net result of this recycling is that our atmosphere now gains a total of 5 gigatonnes (1 gigatonne = 1x1012 kilograms) of carbon annually. Nearly all of this ends up in gases that are greenhouse

  17. Fuel Cycle Subcommittee

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

    Report to NEAC Fuel Cycle Subcommittee Meeting of April 23, 2013 Washington D.C. June 13, 2013 Burton Richter (Chair), Margaret Chu, Darleane Hoffman, Raymond Juzaitis, Sekazi K Mtingwa, Ronald P Omberg, Joy L Rempe, Dominique Warin 2 I Introduction and Summary The Fuel Cycle Subcommittee of NEAC met in Washington on April 23, 2013. The meeting focused on issues relating to the NE advanced reactor program (sections II, III, and IV), and on storage and transportation issues (section V) related to

  18. Fuel Cycle Subcommittee

    Office of Environmental Management (EM)

    April 29, 2015 Washington, DC June 26, 2015 Al Sattelberger (Chair), Carol Burns, Margaret Chu, Raymond Juzaitis, Chris Kouts, Sekazi Mtingwa, Ronald Omberg, Joy Rempe, Dominique Warin 2 I. Introduction The agenda for the April 29, 2015 Fuel Cycle Subcommittee meeting is given below. The meeting provided members an overview of various research efforts funded by the DOE Office of Nuclear Energy's Fuel Cycle Technologies (FCT) program and related research that is coordinated with the FCT program.

  19. Fuel Cycle Subcommittee

    Office of Environmental Management (EM)

    October 22, 2015 Washington, DC December 7, 2015 Al Sattelberger (Chair), Carol Burns, Margaret Chu, Raymond Juzaitis, Chris Kouts, Sekazi Mtingwa, Ronald Omberg, Joy Rempe, Dominique Warin 2 I. Introduction The agenda for the October 22, 2015 Fuel Cycle Subcommittee meeting is given below. The meeting provided members an overview of several research efforts funded by the DOE Office of Nuclear Energy's Fuel Cycle Technologies (FCT) program and related research that is coordinated with the FCT

  20. Light-Duty Reactivity Controlled Compression Ignition Drive Cycle Fuel Economy and Emissions Estimates

    Broader source: Energy.gov [DOE]

    Vehicle systems simulations using experimental data demonstrate improved modeled fuel economy of 15% for passenger vehicles solely from powertrain efficiency relative to a 2009 PFI gasoline baseline.

  1. Hydraulic Hybrid and Conventional Parcel Delivery Vehicles' Measured Laboratory Fuel Economy on Targeted Drive Cycles

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

    Hybrid drivetrains have shown signifcant promise as part of an overall petroleum reduction feet strategy [1, 2, 3, 4, 5, 6]. Hybrid drivetrains consist of an energy storage device and a motor integrated into a traditional powertrain and offer the potential fuel savings by capturing energy normally lost during deceleration through the application of regenerative braking. Because hybrid technologies, especially hydraulic hybrids, have low adoption rates in the medium-duty vehicle segment and

  2. Heavy Duty & Medium Duty Drive Cycle Data Collection for Modeling Expansion

    Broader source: Energy.gov [DOE]

    2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

  3. Consider Steam Turbine Drives for Rotating Equipment | Department of Energy

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

    Steam Turbine Drives for Rotating Equipment Consider Steam Turbine Drives for Rotating Equipment This tip sheet outlines the benefits of steam turbine drives for rotating equipment as part of optimized steam systems. STEAM TIP SHEET #21 PDF icon Consider Steam Turbine Drives for Rotating Equipment (January 2012) More Documents & Publications Improving Steam System Performance: A Sourcebook for Industry, Second Edition Adjustable Speed Drive Part-Load Efficiency Benchmark the Fuel Cost of

  4. Improving Motor and Drive System Performance - A Sourcebook for Industry

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

    | Department of Energy Improving Motor and Drive System Performance - A Sourcebook for Industry Improving Motor and Drive System Performance - A Sourcebook for Industry This sourcebook outlines opportunities to improve motor and drive systems performance. The sourcebook is divided into four main sections: Motor and Drive System Basics: Summarizes important terms, relationships, and system design considerations relating to motor and drive systems. Performance Opportunity Road Map: Details the

  5. Vehicle Technologies Office: U.S. DRIVE 2013 Technical Accomplishments

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

    Report | Department of Energy U.S. DRIVE 2013 Technical Accomplishments Report Vehicle Technologies Office: U.S. DRIVE 2013 Technical Accomplishments Report The U.S. DRIVE 2013 Highlights of Technical Accomplishments Report summarizes key technical accomplishments in the development of advanced automotive and related energy infrastructure technologies achieved in 2013 by the U.S. DRIVE partnership. PDF icon 2013USDRIVEAccomplishmentsReport.pdf More Documents & Publications US DRIVE

  6. Indianapolis Offers a Lesson on Driving Demand | Department of Energy

    Energy Savers [EERE]

    Indianapolis Offers a Lesson on Driving Demand Indianapolis Offers a Lesson on Driving Demand The flier for EcoHouse, with the headline 'Save energy, save money, improve your home' and the text 'EcoHouse can help' below. U Successful program managers know that understanding the factors that drive homeowners to make upgrades is critical to the widespread adoption of energy efficiency. What better place to learn about driving demand for upgrades than in Indianapolis, America's most famous driving

  7. Improving Motor and Drive System Performance - A Sourcebook for Industry

    Office of Environmental Management (EM)

    | Department of Energy Motor and Drive System Performance - A Sourcebook for Industry Improving Motor and Drive System Performance - A Sourcebook for Industry This sourcebook outlines opportunities to improve motor and drive systems performance. The sourcebook is divided into four main sections: Motor and Drive System Basics: Summarizes important terms, relationships, and system design considerations relating to motor and drive systems. Performance Opportunity Road Map: Details the key

  8. Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Efficient Driving Behaviors to Conserve Fuel to someone by E-mail Share Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Facebook Tweet about Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Twitter Bookmark Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Google Bookmark Alternative Fuels Data Center: Efficient Driving Behaviors to Conserve Fuel on Delicious Rank Alternative Fuels Data Center: Efficient

  9. High-Efficiency Receivers for Supercritical Carbon Dioxide Cycles

    Broader source: Energy.gov [DOE]

    This fact sheet describes a project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by Brayton Energy, aims to develop and demonstrate a low-cost, high-efficiency solar receiver that is compatible with s-CO2 cycles and modern thermal storage subsystems. Supercritical CO2 Brayton-cycle engines have the potential to increase conversion efficiency to more than 50%. This high conversion efficiency drives down the cost of the supporting solar field, tower, and thermal storage systems, which could significantly reduce the lifetime costs of a CSP system to achieve the SunShot goal.

  10. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, James M. (Union Lake, MI); Sereshteh, Ahmad (Union Lake, MI)

    1988-01-01

    A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify thetorque commands applied to the motor.

  11. Oscillation control system for electric motor drive

    DOE Patents [OSTI]

    Slicker, J.M.; Sereshteh, A.

    1988-08-30

    A feedback system for controlling mechanical oscillations in the torsionally complaint drive train of an electric or other vehicle. Motor speed is converted in a processor to estimate state signals in which a plant model which are used to electronically modify the torque commands applied to the motor. 5 figs.

  12. QER- Comment of Electric Drive Transportation Association

    Broader source: Energy.gov [DOE]

    Please find attached the comments of the Electric Drive Transportation Association regarding the first volume of the Department of Energy’s QER. If you have questions about our submittal or require further information, please contact me using the information provided below. Thank you for the opportunity to comment. Genevieve Cullen

  13. Mobile Facility Records Annual Climate Cycle in Niger, Africa

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

    Facility Records Annual Climate Cycle in Niger, Africa Because dust can block incoming solar energy, and because solar energy drives weather and climate, scientists around the world are looking for ways to better understand these natural phenomena. In 2006, scientists sponsored by the U.S. Department of Energy's Atmospheric Radiation Measurement (ARM) Climate Research Facility conducted a year-long field campaign in Niamey, Niger, to provide key information for the African Monsoon

  14. Helium process cycle

    DOE Patents [OSTI]

    Ganni, Venkatarao (Yorktown, VA)

    2008-08-12

    A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

  15. Helium process cycle

    DOE Patents [OSTI]

    Ganni, Venkatarao (Yorktown, VA)

    2007-10-09

    A unique process cycle and apparatus design separates the consumer (cryogenic) load return flow from most of the recycle return flow of a refrigerator and/or liquefier process cycle. The refrigerator and/or liquefier process recycle return flow is recompressed by a multi-stage compressor set and the consumer load return flow is recompressed by an independent consumer load compressor set that maintains a desirable constant suction pressure using a consumer load bypass control valve and the consumer load return pressure control valve that controls the consumer load compressor's suction pressure. The discharge pressure of this consumer load compressor is thereby allowed to float at the intermediate pressure in between the first and second stage recycle compressor sets. Utilizing the unique gas management valve regulation, the unique process cycle and apparatus design in which the consumer load return flow is separate from the recycle return flow, the pressure ratios of each recycle compressor stage and all main pressures associated with the recycle return flow are allowed to vary naturally, thus providing a naturally regulated and balanced floating pressure process cycle that maintains optimal efficiency at design and off-design process cycle capacity and conditions automatically.

  16. Drive piston assembly for a valve actuator assembly

    DOE Patents [OSTI]

    Sun, Zongxuan (Troy, MI)

    2010-02-23

    A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.

  17. Superfluid thermodynamic cycle refrigerator

    DOE Patents [OSTI]

    Swift, G.W.; Kotsubo, V.Y.

    1992-12-22

    A cryogenic refrigerator cools a heat source by cyclically concentrating and diluting the amount of [sup 3]He in a single phase [sup 3]He-[sup 4]He solution. The [sup 3]He in superfluid [sup 4]He acts in a manner of an ideal gas in a vacuum. Thus, refrigeration is obtained using any conventional thermal cycle, but preferably a Stirling or Carnot cycle. A single phase solution of liquid [sup 3]He at an initial concentration in superfluid [sup 4]He is contained in a first variable volume connected to a second variable volume through a superleak device that enables free passage of [sup 4]He while restricting passage of [sup 3]He. The [sup 3]He is compressed (concentrated) and expanded (diluted) in a phased manner to carry out the selected thermal cycle to remove heat from the heat load for cooling below 1 K. 12 figs.

  18. Superfluid thermodynamic cycle refrigerator

    DOE Patents [OSTI]

    Swift, Gregory W. (Santa Fe, NM); Kotsubo, Vincent Y. (La Canada, CA)

    1992-01-01

    A cryogenic refrigerator cools a heat source by cyclically concentrating and diluting the amount of .sup.3 He in a single phase .sup.3 He-.sup.4 He solution. The .sup.3 He in superfluid .sup.4 He acts in a manner of an ideal gas in a vacuum. Thus, refrigeration is obtained using any conventional thermal cycle, but preferably a Stirling or Carnot cycle. A single phase solution of liquid .sup.3 He at an initial concentration in superfluid .sup.4 He is contained in a first variable volume connected to a second variable volume through a superleak device that enables free passage of .sup.4 He while restricting passage of .sup.3 He. The .sup.3 He is compressed (concentrated) and expanded (diluted) in a phased manner to carry out the selected thermal cycle to remove heat from the heat load for cooling below 1 K.

  19. Impact of Solar Control PVB Glass on Vehicle Interior Temperatures, Air-Conditioning Capacity, Fuel Consumption, and Vehicle Range

    SciTech Connect (OSTI)

    Rugh, J.; Chaney, L.; Venson, T.; Ramroth, L.; Rose, M.

    2013-04-01

    The objective of the study was to assess the impact of Saflex1 S-series Solar Control PVB (polyvinyl butyral) configurations on conventional vehicle fuel economy and electric vehicle (EV) range. The approach included outdoor vehicle thermal soak testing, RadTherm cool-down analysis, and vehicle simulations. Thermal soak tests were conducted at the National Renewable Energy Laboratory's Vehicle Testing and Integration Facility in Golden, Colorado. The test results quantified interior temperature reductions and were used to generate initial conditions for the RadTherm cool-down analysis. The RadTherm model determined the potential reduction in air-conditioning (A/C) capacity, which was used to calculate the A/C load for the vehicle simulations. The vehicle simulation tool identified the potential reduction in fuel consumption or improvement in EV range between a baseline and modified configurations for the city and highway drive cycles. The thermal analysis determined a potential 4.0% reduction in A/C power for the Saflex Solar PVB solar control configuration. The reduction in A/C power improved the vehicle range of EVs and fuel economy of conventional vehicles and plug-in hybrid electric vehicles.

  20. Terrestrial Carbon Cycle

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

    Terrestrial Carbon Cycle "Only about half of the CO2 released into the atmosphere by human activities currently resides in the atmosphere, the rest absorbed on land and in the oceans. The period over which the carbon will be sequestered is unclear, and the efficiency of future sinks is unknown." US Carbon Cycle Research Plan "We" desire to be able to predict the future spatial and temporal distribution of sources and sinks of atmospheric CO2 and their interaction (forcing and

  1. Cycles in fossil diversity

    SciTech Connect (OSTI)

    Rohde, Robert A.; Muller, Richard A.

    2004-10-20

    It is well-known that the diversity of life appears to fluctuate during the course the Phanerozoic, the eon during which hard shells and skeletons left abundant fossils (0-542 Ma). Using Sepkoski's compendium of the first and last stratigraphic appearances of 36380 marine genera, we report a strong 62 {+-} 3 Myr cycle, which is particularly strong in the shorter-lived genera. The five great extinctions enumerated by Raup and Sepkoski may be an aspect of this cycle. Because of the high statistical significance, we also consider contributing environmental factors and possible causes.

  2. Inflow performance relationships for solution-gas-drive reservoirs

    SciTech Connect (OSTI)

    Camacho-V, R.G.; Raghavan, R.

    1989-05-01

    In this theoretical study, a numerical model was used to examine the influence of pressure level and skin factor on the inflow performance relationships (IPR's) of wells producing under solution-gas-drive systems. Examination of the synthetic deliverability curves suggests that the exponent of the deliverability curve is a function of time and that the exponent is usually greater than unity. The implication of this observation to field data is discussed. The accuracy of procedures given in the literature to predict oilwell deliverabilities is also examined. It is shown that these methods can be used to predict future performance provided that the exponent of the deliverability curve is known and that extrapolations over large time ranges are avoided. If single-point tests are used to predict future performance (such tests assume that the exponent of the deliverability curve is constant), then errors in predictions will be minimized. Although relative permeability and fluid property data are required, the Muskat material-balance equation and the assumption that GOR is independent of distance can be used to predict future production rates. This method avoids problems associated with other methods in the literature and always yields reliable results. New methods to modify the IPR curve to incorporate changes in skin factor are presented. A new flow-efficiency definition based on the structure of the deliverability equations for solution-gas-drive reservoirs is proposed. This definition avoids problems that result when the currently available methods are applied to heavily stimulated wells.

  3. Integrated Inverter For Driving Multiple Electric Machines

    DOE Patents [OSTI]

    Su, Gui-Jia [Knoxville, TN; Hsu, John S [Oak Ridge, TN

    2006-04-04

    An electric machine drive (50) has a plurality of inverters (50a, 50b) for controlling respective electric machines (57, 62), which may include a three-phase main traction machine (57) and two-phase accessory machines (62) in a hybrid or electric vehicle. The drive (50) has a common control section (53, 54) for controlling the plurality of inverters (50a, 50b) with only one microelectronic processor (54) for controlling the plurality of inverters (50a, 50b), only one gate driver circuit (53) for controlling conduction of semiconductor switches (S1-S10) in the plurality of inverters (50a, 50b), and also includes a common dc bus (70), a common dc bus filtering capacitor (C1) and a common dc bus voltage sensor (67). The electric machines (57, 62) may be synchronous machines, induction machines, or PM machines and may be operated in a motoring mode or a generating mode.

  4. Has Driving Come to a Halt?

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

    Has Driving Come to a Halt? Don Pickrell, Volpe Center Energy Information Administration 2014 Energy Conference July 15, 2014 The National Transportation Systems Center Advancing transportation innovation for the public good U.S. Department of Transportation Office of the Secretary of Transportation John A. Volpe National Transportation Systems Center 2 Here's What's New... 90% 100% 110% 120% 0 12 24 36 48 60 VMT as a % of Pre-Recession Level Nov 1973 - Mar 1975 Jan-July 1980 July 1981 - Nov

  5. Collaboration drives achievement in protein structure research

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

    Protein structure research Collaboration drives achievement in protein structure research By tracking down how bacterial defense systems work, the scientists can potentially fight infectious diseases and genetic disorders. September 15, 2014 Thomas Terwilliger Thomas Terwilliger Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "It is tremendously exciting working with researchers around the world, helping them apply the software and algorithms that we have developed to

  6. Heating and current drive systems for TPX

    SciTech Connect (OSTI)

    Swain, D.; Goranson, P.; Halle, A. von; Bernabei, S.; Greenough, N.

    1994-05-24

    The heating and current drive (H and CD) system proposed for the TPX tokamak will consist of ion cyclotron, neutral beam, and lower hybrid systems. It will have 17.5 MW of installed H and CD power initially, and can be upgraded to 45 MW. It will be used to explore advanced confinement and fully current-driven plasma regimes with pulse lengths of up to 1,000 s.

  7. Electric Drive Inverter R&D

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

    Electric Drive Inverter R&D Madhu Chinthavali Email: chinthavalim@ornl.gov Phone: 865-946-1411 This presentation does not contain any proprietary, confidential, or otherwise restricted information U.S. DOE Vehicle Technologies Office 2015 Annual Merit Review and Peer Evaluation Meeting Oak Ridge National Laboratory June10, 2015 Project ID: EDT053 2 Overview * Start - FY15 * Finish - FY17 * 17% complete * Availability and the cost of the WBG devices for the inverter will be barriers for

  8. Observation of Ion-Cyclotron-Frequency Mode-Conversion Flow Drive in

    Office of Scientific and Technical Information (OSTI)

    Tokamak Plasmas (Journal Article) | SciTech Connect Observation of Ion-Cyclotron-Frequency Mode-Conversion Flow Drive in Tokamak Plasmas Citation Details In-Document Search Title: Observation of Ion-Cyclotron-Frequency Mode-Conversion Flow Drive in Tokamak Plasmas Strong toroidal flow (V{sub {phi}}) and poloidal flow (V{sub {theta}}) have been observed in D-{sup 3}He plasmas with ion cyclotron range of frequencies (ICRF) mode-conversion (MC) heating on the Alcator C-Mod tokamak. The toroidal

  9. TITAN'S TRANSPORT-DRIVEN METHANE CYCLE

    SciTech Connect (OSTI)

    Mitchell, Jonathan L.

    2012-09-10

    The mechanisms behind the occurrence of large cloud outbursts and precipitation on Titan have been disputed. A global- and annual-mean estimate of surface fluxes indicated only 1% of the insolation, or {approx}0.04 W m{sup -2}, is exchanged as sensible and/or latent fluxes. Since these fluxes are responsible for driving atmospheric convection, it has been argued that moist convection should be quite rare and precipitation even rarer, even if evaporation globally dominates the surface-atmosphere energy exchange. In contrast, climate simulations indicate substantial cloud formation and/or precipitation. We argue that the top-of-atmosphere (TOA) radiative imbalance is diagnostic of horizontal heat transport by Titan's atmosphere, and thus constrains the strength of the methane cycle. Simple calculations show the TOA radiative imbalance is {approx}0.5-1 W m{sup -2} in Titan's equatorial region, which implies 2-3 MW of latitudinal heat transport by the atmosphere. Our simulation of Titan's climate suggests this transport may occur primarily as latent heat, with net evaporation at the equator and net accumulation at higher latitudes. Thus, the methane cycle could be 10-20 times previous estimates. Opposing seasonal transport at solstices, compensation by sensible heat transport, and focusing of precipitation by large-scale dynamics could further enhance the local, instantaneous strength of Titan's methane cycle by a factor of several. A limited supply of surface liquids in regions of large surface radiative imbalance may throttle the methane cycle, and if so, we predict more frequent large storms over the lakes district during Titan's northern summer.

  10. Test Driving the Toyota Mirai | Department of Energy

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

    Test Driving the Toyota Mirai Test Driving the Toyota Mirai Watch Secretary Ernest Moniz take a spin in the Toyota Mirai, the first fuel cell electric vehicle available for sale.

  11. Columbia Power Technologies, Inc. Deploys its Direct Drive Wave...

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

    Columbia Power Technologies, Inc. Deploys its Direct Drive Wave Energy Buoy Columbia Power Technologies, Inc. Deploys its Direct Drive Wave Energy Buoy April 9, 2013 - 12:00am ...

  12. DRIVE(tm) Mobile App | Open Energy Information

    Open Energy Info (EERE)

    handle all of the details related to sending incentives, provide real time status of offer accepts, and validate points earned. The DRIVE System includes the DRIVE App as a fun...

  13. Utilizing the Traction Drive Power Electronics System to Provide...

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

    Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs Utilizing the Traction Drive Power Electronics System to Provide Plug-in Capability for PHEVs 2009 ...

  14. Vehicle Technologies Office Merit Review 2015: Electric Drive...

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

    Electric Drive Inverter R&D Vehicle Technologies Office Merit Review 2015: Electric Drive Inverter R&D Presentation given by Oak Ridge National Laboratory at 2015 DOE Hydrogen and...

  15. Secrets of the Motor That Drives Archaea Revealed

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

    Secrets of the Motor That Drives Archaea Revealed Secrets of the Motor That Drives Archaea Revealed Print Thursday, 14 February 2013 00:00 An international team led by John Tainer...

  16. Driving Change in Residential Energy Efficiency: Electric Vehicles Advanced

    Office of Environmental Management (EM)

    Programs (301) | Department of Energy Driving Change in Residential Energy Efficiency: Electric Vehicles Advanced Programs (301) Driving Change in Residential Energy Efficiency: Electric Vehicles Advanced Programs (301) April 28

  17. Simulated fuel economy and emissions performance during city and interstate driving for a heavy-duty hybrid truck

    SciTech Connect (OSTI)

    Daw, C Stuart; Gao, Zhiming; Smith, David E; LaClair, Tim J; Pihl, Josh A; Edwards, Kevin Dean

    2013-01-01

    We compare simulated fuel economy and emissions for both conventional and hybrid class 8 heavy-duty diesel trucks operating over multiple urban and highway driving cycles. Both light and heavy freight loads were considered, and all simulations included full aftertreatment for NOx and particulate emissions controls. The aftertreatment components included a diesel oxidation catalyst (DOC), urea-selective catalytic NOx reduction (SCR), and a catalyzed diesel particulate filter (DPF). Our simulated hybrid powertrain was configured with a pre-transmission parallel drive, with a single electric motor between the clutch and gearbox. A conventional HD truck with equivalent diesel engine and aftertreatment was also simulated for comparison. Our results indicate that hybridization can significantly increase HD fuel economy and improve emissions control in city driving. However, there is less potential hybridization benefit for HD highway driving. A major factor behind the reduced hybridization benefit for highway driving is that there are fewer opportunities to utilize regenerative breaking. Our aftertreatment simulations indicate that opportunities for passive DPF regeneration are much greater for both hybrid and conventional trucks during highway driving due to higher sustained exhaust temperatures. When passive DPF regeneration is extensively utilized, the fuel penalty for particulate control is virtually eliminated, except for the 0.4%-0.9% fuel penalty associated with the slightly higher exhaust backpressure.

  18. Vehicle Technologies Office: 2014 Electric Drive Technologies Annual

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

    Progress Report | Department of Energy Electric Drive Technologies Annual Progress Report Vehicle Technologies Office: 2014 Electric Drive Technologies Annual Progress Report The Electric Drive Technologies research and development (R&D) subprogram within the DOE Vehicle Technologies Office (VTO) provides support and guidance for many cutting-edge automotive technologies under development. Research is focused on developing power electronics (PE), electric motor, and traction drive system

  19. Vehicle Technologies Office: US DRIVE Partnership Plan, Roadmaps, and

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

    Accomplishments | Department of Energy US DRIVE Partnership Plan, Roadmaps, and Accomplishments Vehicle Technologies Office: US DRIVE Partnership Plan, Roadmaps, and Accomplishments U.S. DRIVE roadmaps and previous accomplishments reports are available for reference and information. Partnership Plan U.S. DRIVE Partnership Plan - December 2014 Roadmaps Advanced Combustion and Emissions Control: Advanced Combustion and Emission Control Technical Team Roadmap Electrical and Electronics:

  20. Marketing & Driving Demand Collaborative - Social Media Tools & Strategies

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

    | Department of Energy & Driving Demand Collaborative - Social Media Tools & Strategies Marketing & Driving Demand Collaborative - Social Media Tools & Strategies Presentation slides from the Better Buildings webinar on January 6, 2011. PDF icon Marketing & Driving Demand Collaborative More Documents & Publications Using Social Media for Long-Term Branding Marketing & Driving Demand: Social Media Tools & Strategies - January 16, 2011 (Text Version) Generating

  1. Air-Cooled Traction Drive Inverter | Department of Energy

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

    Air-Cooled Traction Drive Inverter Air-Cooled Traction Drive Inverter 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon ape042_chinthavali_2012_o.pdf More Documents & Publications High-Temperature, Air-Cooled Traction Drive Inverter Packaging Wide Bandgap Power Electronics Vehicle Technologies Office Merit Review 2015: Electric Drive Inverter R&D

  2. Strategies for Marketing and Driving Demand for Commercial Financing

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

    Products | Department of Energy Marketing and Driving Demand for Commercial Financing Products Strategies for Marketing and Driving Demand for Commercial Financing Products Better Buildings Neighborhood Program Financing and Commercial Peer Exchange Call: Strategies for Marketing and Driving Demand for Commercial Financing Products, Call Slides and Discussion Summary, February 2, 2012. PDF icon Call Slides and Discussion Summary More Documents & Publications Using Partnerships to Drive

  3. U.S. DRIVE Highlights of Technical Accomplishments Overview

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

    Page i | Preface U.S. DRIVE Highlights of Technical Accomplishments Overview Through precompetitive collaboration and technical information exchange, U.S. DRIVE partners are accelerating the development and availability of clean, efficient automotive and energy technologies. The U.S. DRIVE Partnership (Driving Research for Vehicle efficiency and Energy sustainability) is a voluntary government-industry partnership focused on precompetitive, advanced automotive and related infrastructure

  4. US DRIVE Vehicle Systems and Analysis Technical Team Roadmap | Department

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

    of Energy Vehicle Systems and Analysis Technical Team Roadmap US DRIVE Vehicle Systems and Analysis Technical Team Roadmap VSATT provides the analytic support and subsystem characterizations that guide technology and system selections and assist U.S. DRIVE Technical Teams in determining performance goals and validation metrics. PDF icon vsatt_roadmap_june2013.pdf More Documents & Publications US DRIVE Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability

  5. EV Everywhere Grand Challenge - Electric Drive (Power Electronics and

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

    Electric Machines) Workshop | Department of Energy - Electric Drive (Power Electronics and Electric Machines) Workshop EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop List of companies in attendance at the Electric Drive Workshop held on July 24, 2012 at the Doubletree O'Hare, Chicago, IL PDF icon companies_in_attendance_ed.pdf More Documents & Publications EV Everywhere Grand Challenge Introduction for Electric Drive Workshop EV

  6. Accelerating the Electrification of U.S. Drive Trains: Ready...

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

    More Documents & Publications Accelerating the Electrification of U.S. Drive Trains: Ready and Affordable Technology Solutions for Domestically Manufactured...

  7. D-Cycle - 4-Differential -Stroke Cycle | Department of Energy

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

    D-Cycle - 4-Differential -Stroke Cycle D-Cycle - 4-Differential -Stroke Cycle The D-Cycle offers the opportunity to use less fuel and gain more power while being able to be retrofit to an OEM and aftermarket engines PDF icon deer09_conti.pdf More Documents & Publications Improving Diesel Engine Sweet-spot Efficiency and Adapting it to Improve Duty-cycle MPG - plus Increasing Propulsion and Reducing Cost Two-Stroke Engines: New Frontier in Engine Efficiency Building America Technology

  8. Experimental investigation of an advanced adsorption refrigeration cycle

    SciTech Connect (OSTI)

    Saha, B.B.; Kashiwagi, Takao

    1997-12-31

    Experimental measurements are made for a silica gel-water advanced absorption refrigeration chiller (1.2-kW [4,095-Btu/h] cooling capacity) to evaluate its performance under different temperature and adsorption/desorption cycle time conditions. This paper describes the operating principle of the chiller, outlines the experimental hardware, and discusses results obtained by varying the cooling and hot water inlet temperatures and adsorption/desorption cycle times, as well as their agreement with the simulated results given by a lumped parameter model. The chiller performance is analyzed in terms of cooling capacity and coefficient of performance (COP). Excellent qualitative agreement was obtained between the experimental data and simulated results. The results showed the advanced three-stage cycle to be particularly well suited for operation with low-grade-temperature waste heat as the driving source, since it worked with small regenerating temperature lifts (heat source-heat sink temperature) of 10 to 30 K.

  9. DC switching regulated power supply for driving an inductive load

    DOE Patents [OSTI]

    Dyer, George R. (Norris, TN)

    1986-01-01

    A power supply for driving an inductive load current from a dc power supply hrough a regulator circuit including a bridge arrangement of diodes and switching transistors controlled by a servo controller which regulates switching in response to the load current to maintain a selected load current. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. The regulator may be operated in three "stages" or modes: (1) For current runup in the load, both first and second transistor switch arrays are turned "on" and current is supplied to the load through both transistor arrays. (2) When load current reaches the desired level, the first switch is turned "off", and load current "flywheels" through the second switch array and the fourth leg diode array connecting the second switch array in series with the load. Current is maintained by alternating between modes 1 and 2 at a suitable duty cycle and switching rate set by the controller. (3) Rapid current rundown is accomplished by turning both switch arrays "off", allowing load current to be dumped back into the source through the third and fourth diode arrays connecting the source in series opposition with the load to recover energy from the inductive load. The three operating states are controlled automatically by the controller.

  10. DC switching regulated power supply for driving an inductive load

    DOE Patents [OSTI]

    Dyer, G.R.

    1983-11-29

    A dc switching regulated power supply for driving an inductive load is provided. The regulator basic circuit is a bridge arrangement of diodes and transistors. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. A dc power supply is connected to the input of the bridge and the output is connected to the load. A servo controller is provided to control the switching rate of the transistors to maintain a desired current to the load. The regulator may be operated in three stages or modes: (1) for current runup in the load, both first and second transistor switch arrays are turned on and current is supplied to the load through both transistor arrays. (2) When load current reaches the desired level, the first switch is turned off, and load current flywheels through the second switch array and the fourth leg diode array connecting the second switch array in series with the load. Current is maintained by alternating between modes 1 and 2 at a suitable duty cycle and switching rate set by the controller. (3) Rapid current rundown is accomplished by turning both switch arrays off, allowing load current to be dumped back into the source through the third and fourth diode arrays connecting the source in series opposition with the load to recover energy from the inductive load.

  11. Grand Challenge Portfolio: Driving Innovations in Industrial Energy

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

    Efficiency, January 2011 - pg 6 | Department of Energy 6 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 6 PDF icon grand_challenges_portfolio_pg6.pdf More Documents & Publications Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 9

  12. Electric Drive and Advanced Battery and Components Testbed (EDAB) |

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

    Department of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon vss033_carlson_2011_o.pdf More Documents & Publications Electric Drive and Advanced Battery and Components Testbed (EDAB) Electric Drive and Advanced Battery and Components Testbed (EDAB) Vehicle Technologies Office Merit Review 2014: Electric Drive and Advanced Battery

  13. Stirling cycle engine

    DOE Patents [OSTI]

    Lundholm, Gunnar (Lund, SE)

    1983-01-01

    In a Stirling cycle engine having a plurality of working gas charges separated by pistons reciprocating in cylinders, the total gas content is minimized and the mean pressure equalization among the serial cylinders is improved by using two piston rings axially spaced at least as much as the piston stroke and by providing a duct in the cylinder wall opening in the space between the two piston rings and leading to a source of minimum or maximum working gas pressure.

  14. Nuclear Fuel Cycle

    SciTech Connect (OSTI)

    Dale, Deborah J.

    2014-10-28

    These slides will be presented at the training course “International Training Course on Implementing State Systems of Accounting for and Control (SSAC) of Nuclear Material for States with Small Quantity Protocols (SQP),” on November 3-7, 2014 in Santa Fe, New Mexico. The slides provide a basic overview of the Nuclear Fuel Cycle. This is a joint training course provided by NNSA and IAEA.

  15. Nuclear Fuel Cycle

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

    - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  16. Forest Carbon Cycle

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

    Forest Carbon Cycle Terrestrial carbon stocks above- and belowground (in humus and litter layers, woody debris, and mineral soil) are not only sensitive to physical environmental controls (e.g., temperature, precipitation, soil moisture) but also to land use history/management, disturbance, "quality" of carbon input (a reflection of plant carbon allocation and species controls), and the microbial community. The relative importance of these controls on soil carbon storage and flux can

  17. Jefferson Lab Visitor's Center - Driving in Virginia

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

    Driving in virginia Effective January 1, 2004, all applicants for a driver's license or photo ID card must show proof of U.S. Citizenship or Legal Presence in the United States. A U.S. birth certificate or unexpired U.S. passport will serve as both proof of identity and proof of legal presence. It can also be proved using a variety of other documents, such as a Certificate of Citizenship, Resident Alien Card or a valid foreign passport with a visa, I-94 or I-94W from a participating country. If

  18. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

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

    2006-05-01

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

  19. Evaluation of 2004 Toyota Prius Hybrid Electric Drive System

    SciTech Connect (OSTI)

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

    2006-05-01

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

  20. Optimized Operating Range for Large-Format LiFePO4/Graphite Batteries

    SciTech Connect (OSTI)

    Jiang, Jiuchun; Shi, Wei; Zheng, Jianming; Zuo, Pengjian; Xiao, Jie; Chen, Xilin; Xu, Wu; Zhang, Jiguang

    2014-06-01

    e investigated the long-term cycling performance of large format 20Ah LiFePO4/graphite batteries when they are cycled in various state-of-charge (SOC) ranges. It is found that batteries cycled in the medium SOC range (ca. 20~80% SOC) exhibit superior cycling stability than batteries cycled at both ends (0-20% or 80-100%) of the SOC even though the capcity utilized in the medium SOC range is three times as large as those cycled at both ends of the SOC. Several non-destructive techniques, including a voltage interruption approach, model-based parameter identification, electrode impedance spectra analysis, ?Q/?V analysis, and entropy change test, were used to investigate the performance of LiFePO4/graphite batteries within different SOC ranges. The results reveal that batteries at the ends of SOC exhibit much higher polarization impedance than those at the medium SOC range. These results can be attributed to the significant structural change of cathode and anode materials as revealed by the large entropy change within these ranges. The direct correlation between the polarization impedance and the cycle life of the batteries provides an effective methodology for battery management systems to control and prolong the cycle life of LiFePO4/graphite and other batteries.

  1. Brayton-Cycle Baseload Power Tower CSP System

    SciTech Connect (OSTI)

    Anderson, Bruce

    2013-12-31

    The primary objectives of Phase 2 of this Project were: 1. Engineer, fabricate, and conduct preliminary testing on a low-pressure, air-heating solar receiver capable of powering a microturbine system to produce 300kWe while the sun is shining while simultaneously storing enough energy thermally to power the system for up to 13 hours thereafter. 2. Cycle-test a high-temperature super alloy, Haynes HR214, to determine its efficacy for the systems high-temperature heat exchanger. 3. Engineer the thermal energy storage system This Phase 2 followed Wilsons Phase 1, which primarily was an engineering feasibility study to determine a practical and innovative approach to a full Brayton-cycle system configuration that could meet DOEs targets. Below is a summary table of the DOE targets with Wilsons Phase 1 Project results. The results showed that a Brayton system with an innovative (low pressure) solar receiver with ~13 hours of dry (i.e., not phase change materials or molten salts but rather firebrick, stone, or ceramics) has the potential to meet or exceed DOE targets. Such systems would consist of pre-engineered, standardized, factory-produced modules to minimize on-site costs while driving down costs through mass production. System sizes most carefully analyzed were in the range of 300 kWe to 2 MWe. Such systems would also use off-the-shelf towers, blowers, piping, microturbine packages, and heliostats. Per DOEs instructions, LCOEs are based on the elevation and DNI levels of Daggett, CA, for a 100 MWe power plant following 2 GWe of factory production of the various system components. Success criteria DOE targets Wilson system LCOE DOEs gas price $6.75/MBtu 9 cents/kWh 7.7 cents/kWh LCOE Current gas price $4.71/MBtu NA 6.9 cents/kWh Capacity factor 75% (6500hr) 75-100% Solar fraction 85% (5585hr) >5585hr Receiver cost $170/kWe $50/kWe Thermal storage cost $20/kWhth $13/kWhth Heliostat cost $120/m2 $89.8/m2

  2. Suitability of Synthetic Driving Profiles from Traffic Micro-Simulation for Real-World Energy Analysis: Preprint

    SciTech Connect (OSTI)

    Hou, Yunfei; Wood, Eric; Burton, Evan; Gonder, Jeffrey

    2015-10-14

    A shift towards increased levels of driving automation is generally expected to result in improved safety and traffic congestion outcomes. However, little empirical data exists to estimate the impact that automated driving could have on energy consumption and greenhouse gas emissions. In the absence of empirical data on differences between drive cycles from present day vehicles (primarily operated by humans) and future vehicles (partially or fully operated by computers) one approach is to model both situations over identical traffic conditions. Such an exercise requires traffic micro-simulation to not only accurately model vehicle operation under high levels of automation, but also (and potentially more challenging) vehicle operation under present day human drivers. This work seeks to quantify the ability of a commercial traffic micro-simulation program to accurately model real-world drive cycles in vehicles operated primarily by humans in terms of driving speed, acceleration, and simulated fuel economy. Synthetic profiles from models of freeway and arterial facilities near Atlanta, Georgia, are compared to empirical data collected from real-world drivers on the same facilities. Empirical and synthetic drive cycles are then simulated in a powertrain efficiency model to enable comparison on the basis of fuel economy. Synthetic profiles from traffic micro-simulation were found to exhibit low levels of transient behavior relative to the empirical data. Even with these differences, the synthetic and empirical data in this study agree well in terms of driving speed and simulated fuel economy. The differences in transient behavior between simulated and empirical data suggest that larger stochastic contributions in traffic micro-simulation (relative to those present in the traffic micro-simulation tool used in this study) are required to fully capture the arbitrary elements of human driving. Interestingly, the lack of stochastic contributions from models of human drivers in this study did not result in a significant discrepancy between fuel economy simulations based on synthetic and empirical data; a finding with implications on the potential energy efficiency gains of automated vehicle technology.

  3. DOE Tour of Zero Floorplans: Marine Drive by Clifton View Homes...

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

    Marine Drive by Clifton View Homes DOE Tour of Zero Floorplans: Marine Drive by Clifton View Homes DOE Tour of Zero Floorplans: Marine Drive by Clifton View...

  4. Extended range chemical sensing apparatus

    DOE Patents [OSTI]

    Hughes, R.C.; Schubert, W.K.

    1994-01-18

    An apparatus is described for sensing chemicals over extended range of concentrations. In particular, first and second sensors each having separate, but overlapping ranges for sensing concentrations of hydrogen are provided. Preferably, the first sensor is a MOS solid state device wherein the metal electrode or gate is a nickel alloy. The second sensor is a chemiresistor comprising a nickel alloy. 6 figures.

  5. Extended range chemical sensing apparatus

    DOE Patents [OSTI]

    Hughes, Robert C. (Albuquerque, NM); Schubert, W. Kent (Albuquerque, NM)

    1994-01-01

    An apparatus for sensing chemicals over extended range of concentrations. In particular, first and second sensors each having separate, but overlapping ranges for sensing concentrations of hydrogen are provided. Preferably, the first sensor is a MOS solid state device wherein the metal electrode or gate is a nickel alloy. The second sensor is a chemiresistor comprising a nickel alloy.

  6. Study of the Advantages of Internal Permanent Magnet Drive Motor with Selectable Windings for Hybrid-Electric Vehicles

    SciTech Connect (OSTI)

    Otaduy, P.J.; Hsu, J.S.; Adams, D.J.

    2007-11-30

    This report describes research performed on the viability of changing the effectively active number of turns in the stator windings of an internal permanent magnet (IPM) electric motor to strengthen or weaken the magnetic fields in order to optimize the motor's performance at specific operating speeds and loads. Analytical and simulation studies have been complemented with research on switching mechanisms to accomplish the task. The simulation studies conducted examine the power and energy demands on a vehicle following a series of standard driving cycles and the impact on the efficiency and battery size of an electrically propelled vehicle when it uses an IPM motor with turn-switching capabilities. Both full driving cycle electric propulsion and propulsion limited starting from zero to a set speed have been investigated.

  7. Design and development of Stirling Engines for stationary power generation applications in the 500 to 3000 hp range. Subtask 1A report: state-of-the-art conceptual design

    SciTech Connect (OSTI)

    1980-03-01

    The first portion of the Conceptual Design Study of Stirling Engines for Stationary Power Application in the 500 to 3000 hp range which was aimed at state-of-the-art stationary Stirling engines for a 1985 hardware demonstration is summarized. The main goals of this effort were to obtain reliable cost data for a stationary Stirling engine capable of meeting future needs for total energy/cogeneration sysems and to establish a pragmatic and conservative base design for a first generation hardware. Starting with an extensive screening effort, 4 engine types, i.e., V-type crank engine, radial engine, swashplate engine, and rhombic drive engine, and 3 heat transport systems, i.e., heat pipe, pressurized gas heat transport loop, and direct gas fired system, were selected. After a preliminary layout cycle, the rhombic drive engine was eliminated due to intolerable maintenance difficulties on the push rod seals. V, radial and swashplate engines were taken through a detailed design/layout cycle, to establish all important design features and reliable engine weights. After comparing engine layouts and analyzing qualitative and quantitative evaluation criteria, the V-crank engine was chosen as the candidate for a 1985 hardware demonstration.

  8. Electric power generating plant having direct-coupled steam and compressed-air cycles

    DOE Patents [OSTI]

    Drost, M.K.

    1981-01-07

    An electric power generating plant is provided with a Compressed Air Energy Storage (CAES) system which is directly coupled to the steam cycle of the generating plant. The CAES system is charged by the steam boiler during off peak hours, and drives a separate generator during peak load hours. The steam boiler load is thereby levelized throughout an operating day.

  9. Electric power generating plant having direct coupled steam and compressed air cycles

    DOE Patents [OSTI]

    Drost, Monte K. (Richland, WA)

    1982-01-01

    An electric power generating plant is provided with a Compressed Air Energy Storage (CAES) system which is directly coupled to the steam cycle of the generating plant. The CAES system is charged by the steam boiler during off peak hours, and drives a separate generator during peak load hours. The steam boiler load is thereby levelized throughout an operating day.

  10. Wetland (peat) Carbon Cycle

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

    Wetland (peat) Carbon Cycle Methane (CH4) is an important greenhouse gas, twenty times more potent than CO2, but atmospheric concentrations of CH4 under future climate change are uncertain. This is in part because many climate-sensitive ecosystems release both CH4 and carbon dioxide (CO2) and it is unknown how these systems will partition future releases of carbon to the atmosphere. Ecosystem observations of CH4 emissions lack mechanistic links to the processes that govern CH4 efflux: microbial

  11. NRELs Isothermal Battery Calorimeters are Crucial Tools for Advancing Electric-Drive Vehicles (Fact Sheet), Innovation Impact: Transportation, NREL (National Renewable Energy Laboratory)

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

    Isothermal Battery Calorimeters are Crucial Tools for Advancing Electric-Drive Vehicles With average U.S. gasoline prices hovering in the $3 to $4 per gallon range and higher fuel economy standards taking effect, drivers and automakers are thinking more about electric vehicles, hybrid electric vehicles, and plug-in hybrids. But before more Americans switch to electric-drive vehicles, automakers need batteries that can deliver the range, performance, reliability, price, and safety that drivers

  12. Soil metagenomics and carbon cycling

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

    Bioscience: Bioenergy, Biosecurity, and Health » Environmental Microbiology » Soil metagenomics and carbon cycling Soil metagenomics and carbon cycling Establishing a foundational understanding of the microbial and ecosystem factors that control carbon cycling to improve climate modeling and carbon management. Get Expertise Principle Investigator Cheryl Kuske Bioscience Division 505 665 4800 Email Get Expertise John Dunbar Bioscience Division Email Get Expertise Chris Yeager Bioscience

  13. Battery Electric Vehicles: Range Optimization and Diversification for the U.S. Drivers

    SciTech Connect (OSTI)

    Lin, Zhenhong

    2012-01-01

    Properly selecting the driving range is critical for accurately predicting the market acceptance and the resulting social benefits of BEVs. Analysis of transportation technology transition could be biased against battery electric vehicles (BEV) and mislead policy making, if BEVs are not represented with optimal ranges. This study proposes a coherent method to optimize the BEV driving range by minimizing the range-related cost, which is formulated as a function of range, battery cost, energy prices, charging frequency, access to backup vehicles, and the cost and refueling hassle of operating the backup vehicle. This method is implemented with a sample of 36,664 drivers, representing U.S. new car drivers, based on the 2009 National Household Travel Survey data. Key findings are: 1) Assuming the near term (2015) battery cost at $405/kWh, about 98% of the sampled drivers are predicted to prefer a range below 200 miles, and about 70% below 100 miles. The most popular 20-mile band of range is 57 to77 miles, unsurprisingly encompassing the Leaf s EPA-certified 73-mile range. With range limited to 4 or 7 discrete options, the majority are predicted to choose a range below 100 miles. 2) Found as a statistically robust rule of thumb, the BEV optimal range is approximately 0.6% of one s annual driving distance. 3) Reducing battery costs could motivate demand for larger range, but improving public charging may cause the opposite. 4) Using a single range to represent BEVs in analysis could significantly underestimate their competitiveness e.g. by $3226/vehicle if BEVs are represented with 73-mile range only or by $7404/BEV if with 150-mile range only. Range optimization and diversification into 4 or 7 range options reduce such analytical bias by 78% or 90%, respectively.

  14. Innovative Cell Materials and Designs for 300 Mile Range EVs

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

    Innovative Cell Materials and Design for 300 Mile Range EVs Yimin Zhu, PD/PI OneD Material, LLC (former Nanosys Energy Storage) Palo Alto, California June 16 ~20, 2014 DOE Vehicle Technologies AMR 2014 ES130_zhu_2014_p This presentation does not contain any proprietary, confidential, or otherwise restricted information TM * Barriers addressed - Performance: Low Wh/kg & Wh/L - Life: Poor deep discharge cycles - Cost: High $/kWh * Targets Anode: >700 mAh/g 1,600 mAh/g >800 cycles

  15. Vehicle drive module having improved terminal design

    DOE Patents [OSTI]

    Beihoff, Bruce C.; Radosevich, Lawrence D.; Phillips, Mark G.; Kehl, Dennis L.; Kaishian, Steven C.; Kannenberg, Daniel G.

    2006-04-25

    A terminal structure for vehicle drive power electronics circuits reduces the need for a DC bus and thereby the incidence of parasitic inductance. The structure is secured to a support that may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support may form a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as by direct contact between the terminal assembly and AC and DC circuit components. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  16. Vehicle drive module having improved cooling configuration

    DOE Patents [OSTI]

    Radosevich, Lawrence D.; Meyer, Andreas A.; Kannenberg, Daniel G.; Kaishian, Steven C.; Beihoff, Bruce C.

    2007-02-13

    An electric vehicle drive includes a thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. Power electronic circuits are thermally matched, such as between component layers and between the circuits and the support. The support may form a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  17. Vehicle drive module having improved EMI shielding

    DOE Patents [OSTI]

    Beihoff, Bruce C.; Kehl, Dennis L.; Gettelfinger, Lee A.; Kaishian, Steven C.; Phillips, Mark G.; Radosevich, Lawrence D.

    2006-11-28

    EMI shielding in an electric vehicle drive is provided for power electronics circuits and the like via a direct-mount reference plane support and shielding structure. The thermal support may receive one or more power electronic circuits. The support may aid in removing heat from the circuits through fluid circulating through the support. The support forms a shield from both external EMI/RFI and from interference generated by operation of the power electronic circuits. Features may be provided to permit and enhance connection of the circuitry to external circuitry, such as improved terminal configurations. Modular units may be assembled that may be coupled to electronic circuitry via plug-in arrangements or through interface with a backplane or similar mounting and interconnecting structures.

  18. Electric-drive tractability indicator integrated in hybrid electric vehicle tachometer

    DOE Patents [OSTI]

    Tamai, Goro; Zhou, Jing; Weslati, Feisel

    2014-09-02

    An indicator, system and method of indicating electric drive usability in a hybrid electric vehicle. A tachometer is used that includes a display having an all-electric drive portion and a hybrid drive portion. The all-electric drive portion and the hybrid drive portion share a first boundary which indicates a minimum electric drive usability and a beginning of hybrid drive operation of the vehicle. The indicated level of electric drive usability is derived from at least one of a percent battery discharge, a percent maximum torque provided by the electric drive, and a percent electric drive to hybrid drive operating cost for the hybrid electric vehicle.

  19. Integrated Vehicle Thermal Management - Combining Fluid Loops in Electric Drive Vehicles (Presentation)

    SciTech Connect (OSTI)

    Rugh, J. P.

    2013-07-01

    Plug-in hybrid electric vehicles and electric vehicles have increased vehicle thermal management complexity, using separate coolant loop for advanced power electronics and electric motors. Additional thermal components result in higher costs. Multiple cooling loops lead to reduced range due to increased weight. Energy is required to meet thermal requirements. This presentation for the 2013 Annual Merit Review discusses integrated vehicle thermal management by combining fluid loops in electric drive vehicles.

  20. Open cycle thermoacoustics

    SciTech Connect (OSTI)

    Reid, Robert Stowers

    2000-01-01

    A new type of thermodynamic device combining a thermodynamic cycle with the externally applied steady flow of an open thermodynamic process is discussed and experimentally demonstrated. The gas flowing through this device can be heated or cooled in a series of semi-open cyclic steps. The combination of open and cyclic flows makes possible the elimination of some or all of the heat exchangers (with their associated irreversibility). Heat is directly exchanged with the process fluid as it flows through the device when operating as a refrigerator, producing a staging effect that tends to increase First Law thermodynamic efficiency. An open-flow thermoacoustic refrigerator was built to demonstrate this concept. Several approaches are presented that describe the physical characteristics of this device. Tests have been conducted on this refrigerator with good agreement with a proposed theory.

  1. Stirling cycle rotary engine

    SciTech Connect (OSTI)

    Chandler, J.A.

    1988-06-28

    A Stirling cycle rotary engine for producing mechanical energy from heat generated by a heat source external to the engine, the engine including: an engine housing having an interior toroidal cavity with a central housing axis for receiving a working gas, the engine housing further having a cool as inlet port, a compressed gas outlet port, a heated compressed gas inlet port, and a hot exhaust gas outlet port at least three rotors each fixedly mounted to a respective rotor shaft and independently rotatable within the toroidal cavity about the central axis; each of the rotors including a pair of rotor blocks spaced radially on diametrically opposing sides of the respective rotor shaft, each rotor block having a radially fixed curva-linear outer surface for sealed rotational engagement with the engine housing.

  2. Gift tag drive benefits local children and seniors

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

    Gift Tag Drive Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Gift tag drive benefits local children and seniors Each year, Lab employees and contractors work to make the holidays brighter for local children and seniors through its Holiday Gift Tag drive. January 1, 2013 dummy image Read our archives Contacts Editor Linda Anderman Email Community Programs Office Kurt Steinhaus Email Individuals

  3. High-Voltage Solid Polymer Batteries for Electric Drive Vehicles |

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

    Department of Energy High-Voltage Solid Polymer Batteries for Electric Drive Vehicles High-Voltage Solid Polymer Batteries for Electric Drive Vehicles 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon es129_eitouni_2012_p.pdf More Documents & Publications High-Voltage Solid Polymer Batteries for Electric Drive Vehicles Vehicle Technologies Office Merit Review 2014: High-Voltage Solid Polymer Batteries for

  4. Minimize Adverse Motor and Adjustable Speed Drive Interactions

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

    Minimize Adverse Motor and Adjustable Speed Drive Interactions Electronic adjustable speed drives (ASDs) are extremely effcient and valuable assets to motor systems. They allow precise process control and provide energy savings within systems that do not need to operate continuously at full output. The most common ASD design sold today is the pulse-width-modulated (PWM) variable frequency drive (VFD) with a fast-rise-time insulated gate bipolar transistor (IGBT) to reduce switching losses and

  5. Development and Implementation of Degree Programs in Electric Drive Vehicle

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

    Technology | Department of Energy 0 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. PDF icon tiarravt035_ng_2010_o.pdf More Documents & Publications Development and Implementation of Degree Programs in Electric Drive Vehicle Technology Development and Implementation of Degree Programs in Electric Drive Vehicle Technology Center for Electric Drive Transportation at the University of Michigan - Dearborn

  6. Vehicle Technologies Office: US DRIVE Materials Technical Team Roadmap |

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

    Department of Energy US DRIVE Materials Technical Team Roadmap Vehicle Technologies Office: US DRIVE Materials Technical Team Roadmap The Materials Technical Team (MTT) of the U.S. DRIVE Partnership focuses primarily on reducing the mass of structural systems such as the body and chassis in light-duty vehicles (including passenger cars and light trucks). Mass reduction also enables improved vehicle efficiency regardless of the vehicle size or propulsion system employed. This roadmap lays out

  7. EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power

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

    Electronics and Electric Machines) Workshop Agenda | Department of Energy EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda EV Everywhere EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop Agenda Agenda for the EV Everywhere Grand Challenge - Electric Drive Workshop on July 24, 2012 at the Doubletree O'Hare, Chicago, IL PDF icon agenda_ed.pdf More Documents & Publications EV Everywhere

  8. EV Everywhere Electric Drive Workshop: Preliminary Target-Setting Framework

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

    | Department of Energy Electric Drive Workshop: Preliminary Target-Setting Framework EV Everywhere Electric Drive Workshop: Preliminary Target-Setting Framework Presentation given at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL. PDF icon 3_ward_ed.pdf More Documents & Publications EV Everywhere Battery Workshop: Preliminary Target-Setting Framework EV Everywhere

  9. EV Everywhere Workshop: Traction Drive Systems Breakout Group Report |

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

    Department of Energy Traction Drive Systems Breakout Group Report EV Everywhere Workshop: Traction Drive Systems Breakout Group Report Presentation given at the EV Everywhere Grand Challenge … Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL. PDF icon 7a_marlino_ed.pdf More Documents & Publications EV Everywhere - Charge to Breakout Sessions EV Everywhere Framing Workshop - Report Out & Lessons Learned

  10. Electric Drive and Advanced Battery and Components Testbed (EDAB) |

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

    Department of Energy 2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon vss033_carlson_2012_o.pdf More Documents & Publications Electric Drive and Advanced Battery and Components Testbed (EDAB) Vehicle Technologies Office Merit Review 2014: Electric Drive and Advanced Battery and Components Testbed (EDAB) Electric Drive and Advanced Battery

  11. Shell trajectory measurements from direct-drive implosion experiments

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Shell trajectory measurements from direct-drive implosion experiments Citation Details In-Document Search Title: Shell trajectory measurements from direct-drive implosion experiments A technique to measure the shell trajectory in direct-drive inertial confinement fusion implosions is presented. The x-ray self emission of the target is measured with an x-ray framing camera. Optimized filtering limits the x-ray emission from the corona plasma, isolating a

  12. CTO Speaks to Government's Role in Driving Innovation | Department of

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

    Energy CTO Speaks to Government's Role in Driving Innovation CTO Speaks to Government's Role in Driving Innovation December 4, 2014 - 3:13pm Addthis Robert G. Green (Acting) Robert G. Green (Acting) Principal Deputy CIO for Enterprise Information Resources Management | Deputy CIO for Architecture Engineering, Technology & Innovation Last week, I provided an opening keynote at the Management of Government Technology Annual Summit entitled, Driving Government Innovation: Process and

  13. Countries Launch Initiative to Drive Energy Efficiency in the Commercial

    Office of Environmental Management (EM)

    and Industrial Sectors | Department of Energy Countries Launch Initiative to Drive Energy Efficiency in the Commercial and Industrial Sectors Countries Launch Initiative to Drive Energy Efficiency in the Commercial and Industrial Sectors A fact sheet on the global superior energy performance partnership from the Clean Energy Ministerial. PDF icon Countries Launch Initiative to Drive Energy Efficiency in the Commercial and Industrial Sectors More Documents & Publications Countries Launch

  14. Vehicle Technologies Office: Materials for Hybrid and Electric Drive

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

    Systems | Department of Energy Hybrid and Electric Drive Systems Vehicle Technologies Office: Materials for Hybrid and Electric Drive Systems The Vehicle Technologies Office (VTO) is working to lower the cost and increase the convenience of electric drive vehicles, which include hybrid and plug-in electric vehicles. These vehicles use advanced power electronics and electric motors that face barriers because their subcomponents have specific material limitations. Novel propulsion materials

  15. Driving Operational Changes Through an Energy Monitoring System |

    Office of Environmental Management (EM)

    Department of Energy Driving Operational Changes Through an Energy Monitoring System Driving Operational Changes Through an Energy Monitoring System Fact sheet describes a case study of IBM's corporate energy efficiency monitoring program that focuses on basic improvements in its real estate operations. PDF icon ic_ibm.pdf More Documents & Publications Driving Operational Changes Through an Energy Monitoring System Data, Feedback, and Awareness Lead to Big Energy Savings Connecting

  16. Vehicle Technologies Office: Electric Drive Technologies Research and

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

    Development | Department of Energy Plug-in Electric Vehicles & Batteries » Vehicle Technologies Office: Electric Drive Technologies Research and Development Vehicle Technologies Office: Electric Drive Technologies Research and Development Electric drive technologies, including the electric motor, inverter, boost converter, and on-board charger, are essential components of hybrid and plug-in electric vehicles (PEV) propulsion systems. The Vehicle Technologies Office (VTO) supports

  17. EV Everywhere Grand Challenge Introduction for Electric Drive Workshop |

    Office of Environmental Management (EM)

    Department of Energy Introduction for Electric Drive Workshop EV Everywhere Grand Challenge Introduction for Electric Drive Workshop Presentation given by EERE Assistant Secretary David Danielson at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL. PDF icon 1_danielson_ed.pdf More Documents & Publications EV Everywhere Grand Challenge Overview EV Everywhere Grand Challenge

  18. Improving Motor and Drive System Performance - A Sourcebook for...

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

    The sourcebook is divided into four main sections: Motor and Drive System Basics: Summarizes important terms, relationships, and system design considerations relating to motor and ...

  19. GIZ Sourcebook Module 4f: Eco Driving | Open Energy Information

    Open Energy Info (EERE)

    is not the only one in the chain of actors involved in transport to influence fuel consumption. Manufacturers, legislators, driving schools and vehicle holders- they all can...

  20. US DRIVE Advanced Combustion and Emission Control Technical Team...

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

    Advanced Combustion and Emission Control Technical Team Roadmap US DRIVE Advanced Combustion and Emission Control Technical Team Roadmap The ACEC focuses on advanced engine and ...

  1. US DRIVE Vehicle Systems and Analysis Technical Team Roadmap...

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

    Vehicle Systems and Analysis Technical Team Roadmap US DRIVE Vehicle Systems and Analysis Technical Team Roadmap VSATT provides the analytic support and subsystem characterizations ...

  2. US DRIVE Hydrogen Codes and Standards Technical Team Roadmap...

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

    Hydrogen Codes and Standards Technical Team Roadmap US DRIVE Hydrogen Codes and Standards Technical Team Roadmap The Hydrogen Codes and Standards Tech Team (CSTT) mission is to ...

  3. Medium- and Heavy-Duty Electric Drive Vehicle Simulation and...

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

    More Documents & Publications Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis Medium and Heavy-Duty Vehicle Field Evaluations Battery Pack Requirements and ...

  4. Medium- and Heavy-Duty Electric Drive Vehicle Simulation and...

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

    More Documents & Publications Medium- and Heavy-Duty Electric Drive Vehicle Simulation and Analysis Battery Pack Requirements and Targets Validation FY 2009 DOE Vehicle ...

  5. X-Ray Microscopy Reveals How Crystal Mechanics Drive Battery...

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

    Microscopy Reveals How Crystal Mechanics Drive Battery Performance Print Rechargeable lithium-ion batteries power most portable electronics and are becoming more widely used in...

  6. Electrical motor/generator drive apparatus and method

    DOE Patents [OSTI]

    Su, Gui Jia

    2013-02-12

    The present disclosure includes electrical motor/generator drive systems and methods that significantly reduce inverter direct-current (DC) bus ripple currents and thus the volume and cost of a capacitor. The drive methodology is based on a segmented drive system that does not add switches or passive components but involves reconfiguring inverter switches and motor stator winding connections in a way that allows the formation of multiple, independent drive units and the use of simple alternated switching and optimized Pulse Width Modulation (PWM) schemes to eliminate or significantly reduce the capacitor ripple current.

  7. Airport Drive, Missouri: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Airport Drive, Missouri: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 37.1425588, -94.5107824 Show Map Loading map... "minzoom":false,"mappi...

  8. Edge Temperature Gradient as Intrinsic Rotation Drive in Alcator...

    Office of Scientific and Technical Information (OSTI)

    Edge Temperature Gradient as Intrinsic Rotation Drive in Alcator C -Mod Tokamak Plasmas Citation Details In-Document Search Title: Edge Temperature Gradient as Intrinsic Rotation ...

  9. Driving Demand: Door-to-Door Outreach & Tracking Impacts | Department...

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

    Designing Effective Incentives to Drive Residential Retrofit Program Participation Effective O&M Policy in Public Buildings How to Design and Market Energy Efficiency Programs to ...

  10. Energy Department Announces New Investments to Drive Cost-Competitive...

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

    Next Generation Efficient Lighting Energy Department Announces New Investments to Drive Cost-Competitive Next Generation Efficient Lighting June 4, 2013 - 9:30am Addthis ...

  11. The Drive for Energy Diversity and Sustainability: The Impact...

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

    program - driving unleaded gasoline nationwide in US 1970: GM introduces no lead tolerant engines on all 1971 models in US & Canada 3 Transportation is a growth industry...

  12. Countries Launch Initiative to Drive Energy Efficiency in the...

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

    Launch Initiative to Drive Energy Efficiency in the Commercial and Industrial Sectors International Cooperation on Advancing Industrial Efficiency Clean Energy Ministerial...

  13. Using Partnerships to Drive Demand and Provide Services in Communities

    Broader source: Energy.gov [DOE]

    Better Buildings Neighborhood Program Multifamily and Low-Income Peer Exchange Call: Using Partnerships to Drive Demand and Provide Services in Communities, February 2, 2012.

  14. EV Everywhere Grand Challenge Introduction for Electric Drive...

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

    Presentation given by EERE Assistant Secretary David Danielson at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, ...

  15. Advanced Electric Drive Vehicles … A Comprehensive Education...

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

    A Comprehensive Education, Training, and Outreach Program Advanced Electric Drive Vehicles A Comprehensive Education, Training, and Outreach Program US-India S&T Agreement

  16. Driving Transformation to Energy Efficient Buildings:Policies...

    Open Energy Info (EERE)

    Transformation to Energy Efficient Buildings:Policies and Actions Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Driving Transformation to Energy Efficient...

  17. High-Voltage Solid Polymer Batteries for Electric Drive Vehicles...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: High-Voltage Solid Polymer Batteries for Electric Drive Vehicles Citation Details In-Document Search Title: High-Voltage Solid Polymer Batteries for Electric ...

  18. High-Temperature, Air-Cooled Traction Drive Inverter Packaging...

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

    More Documents & Publications Air-Cooled Traction Drive Inverter Benchmarking of Competitive Technologies High Temperature, High Voltage Fully Integrated Gate Driver Circuit

  19. Driving Accountability for Program Performance Using Measured Energy Savings (201)

    Broader source: Energy.gov [DOE]

    Better Buildings Residential Network Peer Exchange Call Series: Driving Accountability for Program Performance Using Measured Energy Savings (201), November 12, 2015.

  20. Driving and detecting ferromagnetic resonance in insulators with...

    Office of Scientific and Technical Information (OSTI)

    This content will become publicly available on November 5, 2016 Title: Driving and ... become publicly available on November 5, 2016 Publisher's Version of Record 10.1103...

  1. FY 2014 Annual Progress Report - Electric Drive Technology Program

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

    FY 2014 Annual Progress Report iii Electric Drive Technologies Program CONTENTS ACRONYMS AND ABBREVIATIONS ........................................................................................................................ xvi I. INTRODUCTION ................................................................................................................................................... 1 1.0 Introduction

  2. Fact #759: December 24, 2012 Rural vs. Urban Driving Differences |

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

    Department of Energy 9: December 24, 2012 Rural vs. Urban Driving Differences Fact #759: December 24, 2012 Rural vs. Urban Driving Differences According to the National Household Travel Survey, those living in rural areas drive ten more miles in a day than those who live in cities. People living in the suburbs drive only about three to four more miles per day than those within the city. From 2001 to 2009, the total number of daily miles driven decreased by 12%, much of it due to decreases by

  3. Electric Drive and Advanced Battery and Components Testbed (EDAB...

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

    Meeting PDF icon vss033carlson2012o.pdf More Documents & Publications Electric Drive and Advanced Battery and Components Testbed (EDAB) Vehicle Technologies Office Merit...

  4. Accelerating the Electrification of U.S. Drive Trains: Ready...

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

    Accelerating the Electrification of U.S. Drive Trains: Ready and Affordable Technology Solutions for Domestically Manufactured Advanced Batteries Accelerating the Electrification...

  5. The Drive for Energy Diversity and Sustainability: The Impact...

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

    Sustainability: The Impact on Transportation Fuels and Propulsion System Portfolios The Drive for Energy Diversity and Sustainability: The Impact on Transportation Fuels and...

  6. Multi-function magnetic jack control drive mechanism

    DOE Patents [OSTI]

    Bollinger, L.R.; Crawford, D.C.

    1983-10-06

    A multi-function magnetic jack control drive mechanism for controlling a nuclear reactor is provided. The mechanism includes an elongate pressure housing in which a plurality of closely spaced drive rods are located. Each drive rod is connected to a rod which is insertable in the reactor core. An electromechanical stationary latch device is provided which is actuatable to hold each drive rod stationary with respect to the pressure housing. An electromechanical movable latch device is also provided for each one of the drive rods. Each movable latch device is provided with a base and is actuatable to hold a respective drive rod stationary with respect to the base. An electromechanical lift device is further provided for each base which is actuatable for moving a respective base longitudinally along the pressure housing. In this manner, one or more drive rods can be moved in the pressure housing by sequentially and repetitively operating the electromechanical devices. Preferably, each latch device includes a pair of opposed latches which grip teeth located on the respective drive rod. Two, three, or four drive rods can be located symmetrically about the longitudinal axis of the pressure housing.

  7. Multi-function magnetic jack control drive mechanism

    DOE Patents [OSTI]

    Bollinger, Lawrence R. (Schenectady, NY); Crawford, Donald C. (Scotia, NY)

    1986-01-01

    A multi-function magnetic jack control drive mechanism for controlling a nuclear reactor is provided. The mechanism includes an elongate pressure housing in which a plurality of closely spaced drive rods are located. Each drive rod is connected to a rod which is insertable in the reactor core. An electromechanical stationary latch device is provided which is actuatable to hold each drive rod stationary with respect to the pressure housing. An electromechanical movable latch device is also provided for each one of the drive rods. Each movable latch device is provided with a base and is actuatable to hold a respective drive rod stationary with respect to the base. An electromechanical lift device is further provided for each base which is actuatable for moving a respective base longitudinally along the pressure housing. In this manner, one or more drive rods can be moved in the pressure housing by sequentially and repetitively operating the electromechanical devices. Preferably, each latch device includes a pair of opposed latches which grip teeth located on the respective drive rod. Two, three, or four drive rods can be located symmetrically about the longitudinal axis of the pressure housing.

  8. Small Businesses Helping Drive Economy: Clean Energy, Clean Sites...

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

    Helping Drive Economy: Clean Energy, Clean Sites More Documents & Publications SmallBusinessMemoMar2010.pdf Federal Incentives for Wind Power Deployment Remarks by David...

  9. Energetic Drives LLC | Open Energy Information

    Open Energy Info (EERE)

    firm that conducts industrial efficiency improvements, as well as repair and maintenance work for grid-tie inverters and wind turbines ranging from 10kW to 1.2MW....

  10. Advanced regenerative absorption refrigeration cycles

    DOE Patents [OSTI]

    Dao, Kim

    1990-01-01

    Multi-effect regenerative absorption cycles which provide a high coefficient of performance (COP) at relatively high input temperatures. An absorber-coupled double-effect regenerative cycle (ADR cycle) (10) is provided having a single-effect absorption cycle (SEA cycle) (11) as a topping subcycle and a single-effect regenerative absorption cycle (1R cycle) (12) as a bottoming subcycle. The SEA cycle (11) includes a boiler (13), a condenser (21), an expansion device (28), an evaporator (31), and an absorber (40), all operatively connected together. The 1R cycle (12) includes a multistage boiler (48), a multi-stage resorber (51), a multisection regenerator (49) and also uses the condenser (21), expansion device (28) and evaporator (31) of the SEA topping subcycle (11), all operatively connected together. External heat is applied to the SEA boiler (13) for operation up to about 500 degrees F., with most of the high pressure vapor going to the condenser (21) and evaporator (31) being generated by the regenerator (49). The substantially adiabatic and isothermal functioning of the SER subcycle (12) provides a high COP. For higher input temperatures of up to 700 degrees F., another SEA cycle (111) is used as a topping subcycle, with the absorber (140) of the topping subcycle being heat coupled to the boiler (13) of an ADR cycle (10). The 1R cycle (12) itself is an improvement in that all resorber stages (50b-f) have a portion of their output pumped to boiling conduits (71a-f) through the regenerator (49), which conduits are connected to and at the same pressure as the highest pressure stage (48a) of the 1R multistage boiler (48).

  11. Nuclear Fuel Cycle Options Catalog

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

    Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management ...

  12. Minimize Boiler Short Cycling Losses

    Broader source: Energy.gov [DOE]

    This tip sheet on minimizing boiler short cycling losses provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  13. Watts Bar Operating Cycles Simulated...

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

    Coming in our next issue of Tech Notes: Fuel Performance Predictions with VERA Watts Bar Operating Cycles Simulated to Present Among the most important accomplishments during CASL...

  14. Advanced insulated gate bipolar transistor gate drive

    DOE Patents [OSTI]

    Short, James Evans (Monongahela, PA); West, Shawn Michael (West Mifflin, PA); Fabean, Robert J. (Donora, PA)

    2009-08-04

    A gate drive for an insulated gate bipolar transistor (IGBT) includes a control and protection module coupled to a collector terminal of the IGBT, an optical communications module coupled to the control and protection module, a power supply module coupled to the control and protection module and an output power stage module with inputs coupled to the power supply module and the control and protection module, and outputs coupled to a gate terminal and an emitter terminal of the IGBT. The optical communications module is configured to send control signals to the control and protection module. The power supply module is configured to distribute inputted power to the control and protection module. The control and protection module outputs on/off, soft turn-off and/or soft turn-on signals to the output power stage module, which, in turn, supplies a current based on the signal(s) from the control and protection module for charging or discharging an input capacitance of the IGBT.

  15. Base drive and overlap protection circuit

    DOE Patents [OSTI]

    Gritter, David J. (Southfield, MI)

    1983-01-01

    An inverter (34) which provides power to an A. C. machine (28) is controlled by a circuit (36) employing PWM control strategy whereby A. C. power is supplied to the machine at a preselectable frequency and preselectable voltage. This is accomplished by the technique of waveform notching in which the shapes of the notches are varied to determine the average energy content of the overall waveform. Through this arrangement, the operational efficiency of the A. C. machine is optimized. The control circuit includes a microcomputer and memory element which receive various parametric inputs and calculate optimized machine control data signals therefrom. The control data is asynchronously loaded into the inverter through an intermediate buffer (38). A base drive and overlap protection circuit is included to insure that both transistors of a complimentary pair are not conducting at the same time. In its preferred embodiment, the present invention is incorporated within an electric vehicle (10) employing a 144 VDC battery pack (32) and a three-phase induction motor (18).

  16. Organic rankine cycle fluid

    DOE Patents [OSTI]

    Brasz, Joost J.; Jonsson, Ulf J.

    2006-09-05

    A method of operating an organic rankine cycle system wherein a liquid refrigerant is circulated to an evaporator where heat is introduced to the refrigerant to convert it to vapor. The vapor is then passed through a turbine, with the resulting cooled vapor then passing through a condenser for condensing the vapor to a liquid. The refrigerant is one of CF.sub.3CF.sub.2C(O)CF(CF.sub.3).sub.2, (CF.sub.3).sub.2 CFC(O)CF(CF.sub.3).sub.2, CF.sub.3(CF.sub.2).sub.2C(O)CF(CF.sub.3).sub.2, CF.sub.3(CF.sub.2).sub.3C(O)CF(CG.sub.3).sub.2, CF.sub.3(CF.sub.2).sub.5C(O)CF.sub.3, CF.sub.3CF.sub.2C(O)CF.sub.2CF.sub.2CF.sub.3, CF.sub.3C(O)CF(CF.sub.3).sub.2.

  17. Life Cycle Asset Management

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1998-10-14

    (The following directives are deleted or consolidated into this Order and shall be phased out as noted in Paragraph 2: DOE 1332.1A; DOE 4010.1A; DOE 4300.1C; DOE 4320.1B; DOE 4320.2A; DOE 4330.4B; DOE 4330.5; DOE 4540.1C; DOE 4700.1). This Order supersedes specific project management provisions within DOE O 430.1A, LIFE CYCLE ASSET MANAGEMENT. The specific paragraphs canceled by this Order are 6e(7); 7a(3); 7b(11) and (14); 7c(4),(6),(7),(11), and (16); 7d(4) and (8); 7e(3),(10), and (17); Attachment 1, Definitions (item 30 - Line Item Project, item 42 - Project, item 48 - Strategic System); and Attachment 2, Contractor Requirements Document (paragraph 1d regarding a project management system). The remainder of DOE O 430.1A remains in effect. Cancels DOE O 430.1. Canceled by DOE O 413.3.

  18. The Photosynthetic Cycle

    DOE R&D Accomplishments [OSTI]

    Calvin, Melvin

    1955-03-21

    A cyclic sequence of transformations, including the carboxylation of RuDP (ribulose diphosphate) and its re-formation, has been deduced as the route for the creation of reduced carbon compounds in photosynthetic organisms. With the demonstration of RuDP as substrate for the carboxylation in a cell-free system, each of the reactions has now been carried out independently in vitro. Further purification of this last enzyme system has confirmed the deduction that the carboxylation of RuDP leads directly to the two molecules of PGA (phosphoglyceric acid) involving an internal dismutation and suggesting the name "carboxydismutase" for the enzyme. As a consequence of this knowledge of each of the steps in the photosynthetic CO{sub 2} reduction cycle, it is possible to define the reagent requirements to maintain it. The net requirement for the reduction of one molecule of CO{sub 2} is four equivalents of [H]and three molecules of ATP (adenine triphosphate). These must ultimately be supplied by the photochemical reaction. Some possible ways in which this may be accomplished are discussed.

  19. Solar spectral irradiance changes during cycle 24 (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Solar spectral irradiance changes during cycle 24 Citation Details In-Document Search Title: Solar spectral irradiance changes during cycle 24 We use solar spectra obtained by the Ozone Monitoring Instrument (OMI) on board the Aura satellite to detect and follow long-term (years) and short-term (weeks) changes in the solar spectral irradiance (SSI) in the 265-500 nm spectral range. During solar Cycle 24, in the relatively line-free regions the SSI changed by ∼0.6% ± 0.2%

  20. Solar spectral irradiance changes during cycle 24

    SciTech Connect (OSTI)

    Marchenko, S. V.; DeLand, M. T.

    2014-07-10

    We use solar spectra obtained by the Ozone Monitoring Instrument (OMI) on board the Aura satellite to detect and follow long-term (years) and short-term (weeks) changes in the solar spectral irradiance (SSI) in the 265-500 nm spectral range. During solar Cycle 24, in the relatively line-free regions the SSI changed by ?0.6% 0.2% around 265 nm. These changes gradually diminish to 0.15% 0.20% at 500 nm. All strong spectral lines and blends, with the notable exception of the upper Balmer lines, vary in unison with the solar 'continuum'. Besides the lines with strong chromospheric components, the most involved species include Fe I blends and all prominent CH, NH, and CN spectral bands. Following the general trend seen in the solar 'continuum', the variability of spectral lines also decreases toward longer wavelengths. The long-term solar cycle SSI changes are closely, to within the quoted 0.1%-0.2% uncertainties, matched by the appropriately adjusted short-term SSI variations derived from the 27 day rotational modulation cycles. This further strengthens and broadens the prevailing notion about the general scalability of the UV SSI variability to the emissivity changes in the Mg II 280 nm doublet on timescales from weeks to years. We also detect subtle deviations from this general rule: the prominent spectral lines and blends at ? ? 350 nm show slightly more pronounced 27 day SSI changes when compared to the long-term (years) trends. We merge the solar data from Cycle 21 with the current Cycle 24 OMI and GOME-2 observations and provide normalized SSI variations for the 170-795 nm spectral region.

  1. Range determination for scannerless imaging

    DOE Patents [OSTI]

    Muguira, Maritza Rosa (Albuquerque, NM); Sackos, John Theodore (Albuquerque, NM); Bradley, Bart Davis (Albuquerque, NM); Nellums, Robert (Albuquerque, NM)

    2000-01-01

    A new method of operating a scannerless range imaging system (e.g., a scannerless laser radar) has been developed. This method is designed to compensate for nonlinear effects which appear in many real-world components. The system operates by determining the phase shift of the laser modulation, which is a physical quantity related physically to the path length between the laser source and the detector, for each pixel of an image.

  2. Range gated strip proximity sensor

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-12-03

    A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance. 6 figs.

  3. Range gated strip proximity sensor

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01

    A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance.

  4. HybriDrive Propulsion System | Department of Energy

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

    HybriDrive Propulsion System HybriDrive Propulsion System Presentation at DOE & DOT Joint Fuel Cell Bus Workshop, Washington DC, June 7, 2010 PDF icon buswksp10_mancini.pdf More Documents & Publications Joint Fuel Cell Bus Workshop Summary Report Vehicle Technologies Office Merit Review 2015: Zero Emission Cargo Transport II Fuel Cell Bus Workshop

  5. Grand Challenge Portfolio: Driving Innovations in Industrial Energy

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

    Efficiency, January 2011 - pg 8 | Department of Energy 8 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8 PDF icon grand_challenges_portfolio_pg8.pdf More Documents & Publications Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 9

  6. Grand Challenge Portfolio: Driving Innovations in Industrial Energy

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

    Efficiency, January 2011 - pg 9 | Department of Energy 9 Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 9 PDF icon grand_challenges_portfolio_pg9.pdf More Documents & Publications Grand Challenge Portfolio: Driving Innovations in Industrial Energy Efficiency, January 2011 - pg 8

  7. Designing Effective Incentives to Drive Residential Retrofit Program

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

    Participation | Department of Energy Incentives to Drive Residential Retrofit Program Participation Designing Effective Incentives to Drive Residential Retrofit Program Participation This webinar covered retrofit program incentive contests, decision points to consider when designing an incentive program, and examples of incentive structures. Transcript PDF icon Presentation More Documents & Publications Designing Effective Renewables Programs How to Design a Community Energy Alliance

  8. Development and Implementation of Degree Programs in Electric Drive Vehicle

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

    Technology | Department of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon arravt035_ti_ng_2011_p.pdf More Documents & Publications Development and Implementation of Degree Programs in Electric Drive Vehicle Technology Development and Implementation of Degree Programs in Electric Drive Vehicle Technology Asia/ITS

  9. Electric Drive Semiconductor Manufacturing (EDSM) Center | Department of

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

    Energy 2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon arravt030_ape_prusia_2012_p.pdf More Documents & Publications Electric Drive Semiconductor Manufacturing (EDSM) Center Electric Drive Semiconductor Manufacturing (EDSM) Center Advanced Li-Ion Polymer Battery Cell Manufacturing Plant in USA

  10. Range-gated field disturbance sensor with range-sensitivity compensation

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-05-28

    A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. The burst repetition rate is randomly or pseudorandomly modulated so that bursts in the sequence of bursts have a phase which varies. 8 figs.

  11. Range-gated field disturbance sensor with range-sensitivity compensation

    DOE Patents [OSTI]

    McEwan, Thomas E. (Livermore, CA)

    1996-01-01

    A field disturbance sensor operates with relatively low power, provides an adjustable operating range, is not hypersensitive at close range, allows co-location of multiple sensors, and is inexpensive to manufacture. The sensor includes a transmitter that transmits a sequence of transmitted bursts of electromagnetic energy. The transmitter frequency is modulated at an intermediate frequency. The sequence of bursts has a burst repetition rate, and each burst has a burst width and comprises a number of cycles at a transmitter frequency. The sensor includes a receiver which receives electromagnetic energy at the transmitter frequency, and includes a mixer which mixes a transmitted burst with reflections of the same transmitted burst to produce an intermediate frequency signal. Circuitry, responsive to the intermediate frequency signal indicates disturbances in the sensor field. Because the mixer mixes the transmitted burst with reflections of the transmitted burst, the burst width defines the sensor range. The burst repetition rate is randomly or pseudorandomly modulated so that bursts in the sequence of bursts have a phase which varies.

  12. Impacts of Vehicle Weight Reduction via Material Substitution on Life-Cycle Greenhouse Gas Emissions

    SciTech Connect (OSTI)

    Kelly, Jarod C.; Sullivan, John L.; Burnham, Andrew; Elgowainy, Amgad

    2015-10-20

    This study examines the vehicle-cycle impacts associated with substituting lightweight materials for those currently found in light-duty passenger vehicles. We determine part-based energy use and greenhouse gas (GHG) emission ratios by collecting material substitution data from both the literature and automotive experts and evaluating that alongside known mass-based energy use and GHG emission ratios associated with material pair substitutions. Several vehicle parts, along with full vehicle systems, are examined for lightweighting via material substitution to observe the associated impact on GHG emissions. Results are contextualized by additionally examining fuel-cycle GHG reductions associated with mass reductions relative to the baseline vehicle during the use phase and also determining material pair breakeven driving distances for GHG emissions. The findings show that, while material substitution is useful in reducing vehicle weight, it often increases vehicle-cycle GHGs depending upon the material substitution pair. However, for a vehicles total life cycle, fuel economy benefits are greater than the increased burdens associated with the vehicle manufacturing cycle, resulting in a net total life-cycle GHG benefit. The vehicle cycle will become increasingly important in total vehicle life-cycle GHGs, since fuel-cycle GHGs will be gradually reduced as automakers ramp up vehicle efficiency to meet fuel economy standards.

  13. Extended-range tiltable micromirror

    DOE Patents [OSTI]

    Allen, James J. (Albuquerque, NM); Wiens, Gloria J. (Newberry, FL); Bronson, Jessica R. (Gainesville, FL)

    2009-05-05

    A tiltable micromirror device is disclosed in which a micromirror is suspended by a progressive linkage with an electrostatic actuator (e.g. a vertical comb actuator or a capacitive plate electrostatic actuator) being located beneath the micromirror. The progressive linkage includes a pair of torsion springs which are connected together to operate similar to a four-bar linkage with spring joints. The progressive linkage provides a non-linear spring constant which can allow the micromirror to be tilted at any angle within its range substantially free from any electrostatic instability or hysteretic behavior.

  14. Live Fire Range Environmental Assessment

    SciTech Connect (OSTI)

    1993-08-01

    The Central Training Academy (CTA) is a DOE Headquarters Organization located in Albuquerque, New Mexico, with the mission to effectively and efficiently educate and train personnel involved in the protection of vital national security interests of DOE. The CTA Live Fire Range (LFR), where most of the firearms and tactical training occurs, is a complex separate from the main campus. The purpose of the proposed action is to expand the LFR to allow more options of implementing required training. The Department of Energy has prepared this Environmental Assessment (EA) for the proposed construction and operation of an expanded Live Fire Range Facility at the Central Training Academy in Albuquerque, New Mexico. Based on the analysis in the EA, DOE has determined that the proposed action is not a major Federal action significantly affecting the quality of the human environment, within the meaning of the National Environmental Policy Act (NEPA) of 1969. Therefore, the preparation of an environmental impact statement is not required and DOE is issuing this Finding of No Significant Impact (FONSI).

  15. Integrated Testing, Simulation and Analysis of Electric Drive Options for Medium-Duty Parcel Delivery Vehicles: Preprint

    SciTech Connect (OSTI)

    Ramroth, L. A.; Gonder, J.; Brooker, A.

    2012-09-01

    The National Renewable Energy Laboratory verified diesel-conventional and diesel-hybrid parcel delivery vehicle models to evaluate petroleum reduction and cost implications of plug-in hybrid gasoline and diesel variants. These variants are run on a field-data-derived design matrix to analyze the effects of drive cycle, distance, battery replacements, battery capacity, and motor power on fuel consumption and lifetime cost. Two cost scenarios using fuel prices corresponding to forecasted highs for 2011 and 2030 and battery costs per kilowatt-hour representing current and long-term targets compare plug-in hybrid lifetime costs with diesel conventional lifetime costs. Under a future cost scenario of $100/kWh battery energy and $5/gal fuel, plug-in hybrids are cost effective. Assuming a current cost of $700/kWh and $3/gal fuel, they rarely recoup the additional motor and battery cost. The results highlight the importance of understanding the application's drive cycle, daily driving distance, and kinetic intensity. For instances in the current-cost scenario where the additional plug-in hybrid cost is regained in fuel savings, the combination of kinetic intensity and daily distance travelled does not coincide with the usage patterns observed in the field data. If the usage patterns were adjusted, the hybrids could become cost effective.

  16. Numerical study on the stabilization of neoclassical tearing modes by electron cyclotron current drive

    SciTech Connect (OSTI)

    Wang, Xiaoguang; Zhang, Xiaodong; Wu, Bin; Zhu, Sizheng; Hu, Yemin

    2015-02-15

    It is well known that electron cyclotron current drive (ECCD) around the o-point of magnetic island along the plasma current direction can stabilize neoclassical tearing modes (NTMs) in tokamak devices. The effects of the radial misalignment between the island and the driven current, the phase misalignment, and the on-duty ratio for modulated current drive on NTM stabilization are studied numerically in this paper. A small radial misalignment is found to significantly decrease the stabilizing effect. When a sufficiently large phase misalignment occurs for the modulated ECCD, the stabilization effect is also reduced a lot. The optimal on-duty ratio of modulated ECCD to stabilize NTMs is found to be in the range of 60%70%. A larger on-duty ratio than 50% could also mitigate the effect of phase misalignment if it is not too large. There is no benefit from modulation if the phase misalignment is larger than a threshold.

  17. FABRICATE AND TEST AN ADVANCED NON-POLLUTING TURBINE DRIVE GAS GENERATOR

    SciTech Connect (OSTI)

    Eugene Baxter; Roger E. Anderson; Stephen E. Doyle

    2003-06-01

    In September 2000 the Department of Energy's National Energy Technology Laboratory (DOE/NETL) contracted with Clean Energy Systems, Inc. (CES) of Sacramento, California to design, fabricate, and test a 20 MW{sub t} (10 MW{sub e}) gas generator. Program goals were to demonstrate a non-polluting gas generator at temperatures up to 3000 F at 1500 psi, and to demonstrate resulting drive gas composition, comprising steam and carbon dioxide substantially free of pollutants. Following hardware design and fabrication, testing, originally planned to begin in the summer of 2001, was delayed by unavailability of the contracted test facility. CES designed, fabricated, and tested the proposed gas generator as originally agreed. The CES process for producing near-zero-emissions power from fossil fuels is based on the near-stoichiometric combustion of a clean gaseous fuel with oxygen in the presence of recycled water, to produce a high-temperature, high-pressure turbine drive fluid comprising steam and carbon dioxide. Tests demonstrated igniter operation over the prescribed ranges of pressure and mixture ratios. Ignition was repeatable and reliable through more than 100 ignitions. Injector design ''A'' was operated successfully at both low power ({approx}20% of rated power) and at rated power ({approx}20 MW{sub t}) in more than 95 tests. The uncooled gas generator configuration (no diluent injectors or cooldown chambers installed) produced drive gases at temperatures approaching 3000 F and at pressures greater than 1550 psia. The fully cooled gas generator configuration, with cooldown chambers and injector ''A'', operated consistently at pressures from 1100 to 1540 psia and produced high pressure, steam-rich turbine drive gases at temperatures ranging from {approx}3000 to as low as 600 F. This report includes description of the intended next steps in the gas generator technology demonstration and traces the anticipated pathway to commercialization for the gas generator technology developed in this program.

  18. Coverage Range Retiree Only Retiree

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

    Coverage Range Retiree Only Retiree and Spouse $10,000 7.00 $ 10.80 $ $20,000 14.00 $ 21.60 $ $25,000 17.50 $ 27.00 $ $30,000 21.00 $ 32.40 $ $40,000 28.00 $ 43.20 $ $50,000 35.00 $ 54.00 $ $60,000 42.00 $ 64.80 $ $70,000 49.00 $ 75.60 $ $80,000 56.00 $ 86.40 $ $90,000 63.00 $ 97.20 $ $100,000 70.00 $ 108.00 $ $150,000 105.00 $ 162.00 $ $200,000 140.00 $ 216.00 $ $250,000 175.00 $ 270.00 $ LANL Annual AD&D Retiree Insurance Premiums (Rates shown are paid by the participant)

  19. COAXIAL CONTROL ROD DRIVE MECHANISM FOR NEUTRONIC REACTORS

    DOE Patents [OSTI]

    Fox, R.J.; Oakes, L.C.

    1959-04-14

    A drive mechanism is presented for the control rod or a nuclear reactor. In this device the control rod is coupled to a drive shaft which extends coaxially through the rotor of an electric motor for relative rotation with respect thereto. A gear reduction mehanism is coupled between the rotor and the drive shaft to convert the rotary motion of the motor into linear motion of the shaft with a comparatively great reduction in speed, thereby providing relatively glow linear movement of the shaft and control rod for control purposes.

  20. Base drive circuit for a four-terminal power Darlington

    DOE Patents [OSTI]

    Lee, Fred C. (Blacksburg, VA); Carter, Roy A. (Salem, VA)

    1983-01-01

    A high power switching circuit which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In one application, the switching circuit is used in each power switching element in a chopper-inverter drive of an electric vehicle propulsion system.

  1. Scaling of lower hybrid current drive with temperature

    SciTech Connect (OSTI)

    Harvey, R.W. ); McCoy, M.G. ); Ram, A.K.; Bers, A. ); Fuchs, V. )

    1992-06-01

    The 3-D Fokker-Planck/quasilinear code (CQL3D) is used to study the temperature scaling of lower hybrid current drive (LHCD) in the JET and JT-60 experiments. An offset-linear increase of current drive efficiency is obtained as a function of volume average temperature {l angle}T{sub e}{r angle} up to {approximately} 2.5, and reduced rate of efficiency increase is found at higher temperatures. The LHCD results indicate some fast wave/LH current drive synergy in the JET LH/FW experiments; however, code results discussed here show that synergy is not due to TTMP damping of the fast wave.

  2. Driving for $1.14 Per Gallon | Department of Energy

    Energy Savers [EERE]

    Driving for $1.14 Per Gallon Driving for $1.14 Per Gallon June 11, 2013 - 7:30am Addthis News Media Contact (202) 586-4940 WASHINGTON - The Energy Department today launched the eGallon - a quick and simple way for consumers to compare the costs of fueling electric vehicles vs. driving on gasoline. Today's national average eGallon price is about $1.14, meaning that a typical electric vehicle could travel as far on $1.14 worth of electricity as a similar vehicle could travel on a gallon of

  3. Do You Drive a Hybrid Electric Vehicle? | Department of Energy

    Office of Environmental Management (EM)

    Drive a Hybrid Electric Vehicle? Do You Drive a Hybrid Electric Vehicle? July 9, 2009 - 1:34am Addthis In Tuesday's entry, Francis X. Vogel from the Wisconsin Clean Cities coalition told us about his plug-in hybrid electric vehicle (PHEV). He's one of the lucky few in the United States to drive one of these vehicles because factory-made PHEV's are not yet available to the public. Regular hybrid electric vehicles, however, are widely available and seem to be more and more common on the roads. Do

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

    SciTech Connect (OSTI)

    Barth, Matthew; Boriboonsomsin, Kanok

    2014-12-31

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

  5. Fundamental Mechanisms Driving the Amorphous to Crystalline Phase Transformation

    SciTech Connect (OSTI)

    Reed, B W; Browning, N D; Santala, M K; LaGrange, T; Gilmer, G H; Masiel, D J; Campbell, G H; Raoux, S; Topuria, T; Meister, S; Cui, Y

    2011-01-04

    Phase transformations are ubiquitous, fundamental phenomena that lie at the heart of many structural, optical and electronic properties in condensed matter physics and materials science. Many transformations, especially those occurring under extreme conditions such as rapid changes in the thermodynamic state, are controlled by poorly understood processes involving the nucleation and quenching of metastable phases. Typically these processes occur on time and length scales invisible to most experimental techniques ({micro}s and faster, nm and smaller), so our understanding of the dynamics tends to be very limited and indirect, often relying on simulations combined with experimental study of the ''time infinity'' end state. Experimental techniques that can directly probe phase transformations on their proper time and length scales are therefore key to providing fundamental insights into the whole area of transformation physics and materials science. LLNL possesses a unique dynamic transmission electron microscope (DTEM) capable of taking images and diffraction patterns of laser-driven material processes with resolution measured in nanometers and nanoseconds. The DTEM has previously used time-resolved diffraction patterns to quantitatively study phase transformations that are orders of magnitude too fast for conventional in situ TEM. More recently the microscope has demonstrated the ability to directly image a reaction front moving at {approx}13 nm/ns and the nucleation of a new phase behind that front. Certain compound semiconductor phase change materials, such as Ge{sub 2}Sb{sub 2}Te{sub 5} (GST), Sb{sub 2}Te and GeSb, exhibit a technologically important series of transformations on scales that fall neatly into the performance specifications of the DTEM. If a small portion of such material is heated above its melting point and then rapidly cooled, it quenches into an amorphous state. Heating again with a less intense pulse leads to recrystallization into a vacancy-stabilized metastable rock salt structure. Each transformation takes {approx}10-100 ns, and the cycle can be driven repeatedly a very large number of times with a nanosecond laser such as the DTEM's sample drive laser. These materials are widely used in optical storage devices such as rewritable CDs and DVDs, and they are also applied in a novel solid state memory technology - phase change memory (PCM). PCM has the potential to produce nonvolatile memory systems with high speed, extreme density, and very low power requirements. For PCM applications several materials properties are of great importance: the resistivities of both phases, the crystallization temperature, the melting point, the crystallization speed, reversibility (number of phase-transformation cycles without degradation) and stability against crystallization at elevated temperature. For a viable technology, all these properties need to have good scaling behavior, as dimensions of the memory cells will shrink with every generation. In this LDRD project, we used the unique single-shot nanosecond in situ experimentation capabilities of the DTEM to watch these transformations in GST on the time and length scales most relevant for device applications. Interpretation of the results was performed in conjunction with atomistic and finite-element computations. Samples were provided by collaborators at IBM and Stanford University. We observed, and measured the kinetics of, the amorphous-crystalline and melting-solidification transitions in uniform thin-film samples. Above a certain threshold, the crystal nucleation rate was found to be enormously high (with many nuclei appearing per cubic {micro}m even after nanosecond-scale incubation times), in agreement with atomistic simulation and consistent with an extremely low nucleation barrier. We developed data reduction techniques based on principal component analysis (PCA), revealing the complex, multi-dimensional evolution of the material while suppressing noise and irrelevant information. Using a novel specimen geometry, we also achieved repeated switching betw

  6. Program Evaluation: Program Life Cycle

    Broader source: Energy.gov [DOE]

    In general, different types of evaluation are carried out over different parts of a program's life cycle (e.g., Creating a program, Program is underway, or Closing out or end of program)....

  7. Single pressure steam bottoming cycle for gas turbines combined cycle

    SciTech Connect (OSTI)

    Zervos, N.

    1990-01-30

    This patent describes a process for recapturing waste heat from the exhaust of a gas turbine to drive a high pressure-high temperature steam turbine and a low pressure steam turbine. It comprises: delivering the exhaust of the gas turbine to the hot side of an economizer-reheater apparatus; delivering a heated stream of feedwater and recycled condensate through the cold side of the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus to elevate the temperature below the pinch point of the boiler; delivering the discharge from the high pressure-high temperature steam turbine through the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus; driving the high pressure-high temperature steam turbine with the discharge stream of feedwater and recycled condensate which is heated to a temperature below the pinch point of the boiler by the economizer-reheater apparatus; and driving the low pressure steam turbine with the discharged stream of the high pressure-high temperature steam turbine reheated below the pinch point of the boiler by the economizer-reheater apparatus.

  8. Wide-range voltage modulation

    SciTech Connect (OSTI)

    Rust, K.R.; Wilson, J.M.

    1992-06-01

    The Superconducting Super Collider`s Medium Energy Booster Abort (MEBA) kicker modulator will supply a current pulse to the abort magnets which deflect the proton beam from the MEB ring into a designated beam stop. The abort kicker will be used extensively during testing of the Low Energy Booster (LEB) and the MEB rings. When the Collider is in full operation, the MEBA kicker modulator will abort the MEB beam in the event of a malfunction during the filling process. The modulator must generate a 14-{mu}s wide pulse with a rise time of less than 1 {mu}s, including the delay and jitter times. It must also be able to deliver a current pulse to the magnet proportional to the beam energy at any time during ramp-up of the accelerator. Tracking the beam energy, which increases from 12 GeV at injection to 200 GeV at extraction, requires the modulator to operate over a wide range of voltages (4 kV to 80 kV). A vacuum spark gap and a thyratron have been chosen for test and evaluation as candidate switches for the abort modulator. Modulator design, switching time delay, jitter and pre-fire data are presented.

  9. Operation and analysis of a supercritical CO2 Brayton cycle.

    SciTech Connect (OSTI)

    Wright, Steven Alan; Radel, Ross F.; Vernon, Milton E.; Pickard, Paul S.; Rochau, Gary Eugene

    2010-09-01

    Sandia National Laboratories is investigating advanced Brayton cycles using supercritical working fluids for use with solar, nuclear or fossil heat sources. The focus of this work has been on the supercritical CO{sub 2} cycle (S-CO2) which has the potential for high efficiency in the temperature range of interest for these heat sources, and is also very compact, with the potential for lower capital costs. The first step in the development of these advanced cycles was the construction of a small scale Brayton cycle loop, funded by the Laboratory Directed Research & Development program, to study the key issue of compression near the critical point of CO{sub 2}. This document outlines the design of the small scale loop, describes the major components, presents models of system performance, including losses, leakage, windage, compressor performance, and flow map predictions, and finally describes the experimental results that have been generated.

  10. Six Thousand Electrochemical Cycles of Double-Walled Silicon Nanotube Anodes for Lithium Ion Batteries

    SciTech Connect (OSTI)

    Wu, H

    2011-08-18

    Despite remarkable progress, lithium ion batteries still need higher energy density and better cycle life for consumer electronics, electric drive vehicles and large-scale renewable energy storage applications. Silicon has recently been explored as a promising anode material for high energy batteries; however, attaining long cycle life remains a significant challenge due to materials pulverization during cycling and an unstable solid-electrolyte interphase. Here, we report double-walled silicon nanotube electrodes that can cycle over 6000 times while retaining more than 85% of the initial capacity. This excellent performance is due to the unique double-walled structure in which the outer silicon oxide wall confines the inner silicon wall to expand only inward during lithiation, resulting in a stable solid-electrolyte interphase. This structural concept is general and could be extended to other battery materials that undergo large volume changes.

  11. Watch Energy Secretary Moniz Test Drive the Toyota Mirai

    Broader source: Energy.gov [DOE]

    The Energy Department posted a video of ‪Secretary Ernest Moniz driving the Toyota Mirai, the first fuel cell electric vehicle (FCEV) for sale in the United States.

  12. EM modeling of RF drive in DTL tank 4

    SciTech Connect (OSTI)

    Kurennoy, Sergey S.

    2012-06-19

    A 3-D MicroWave Studio model for the RF drive in the LANSCE DTL tank 4 has been built. Both eigensolver and time-domain modeling are used to evaluate maximal fields in the drive module and RF coupling. The LANSCE DTL tank 4 has recently been experiencing RF problems, which may or may not be related to its replaced RF coupler. This situation stimulated a request by Dan Rees to provide EM modeling of the RF drive in the DTL tank 4 (T4). Jim O'Hara provided a CAD model that was imported into the CST Microwave Studio (MWS) and after some modifications became a part of a simplified MWS model of the T4 RF drive. This technical note describes the model and presents simulation results.

  13. Driving Research in Electric Machines |GE Global Research

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

    Driving Research in Electric Machines Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to...

  14. High-Voltage Solid Polymer Batteries for Electric Drive Vehicles...

    Office of Scientific and Technical Information (OSTI)

    Voltage Solid Polymer Batteries for Electric Drive Vehicles Eitouni, Hany; Yang, Jin; Pratt, Russell; Wang, Xiao; Grape, Ulrik The purpose of this project was for Seeo to develop a...

  15. MHK Technologies/Direct Drive Power Generation Buoy | Open Energy...

    Open Energy Info (EERE)

    license agreement with Columbia Power Technologies to jointly develop a direct drive wave energy conversion device Designed to be anchored 2 5 miles off the Oregon coast in 130...

  16. Photovoltaics: Life-cycle Analyses

    SciTech Connect (OSTI)

    Fthenakis V. M.; Kim, H.C.

    2009-10-02

    Life-cycle analysis is an invaluable tool for investigating the environmental profile of a product or technology from cradle to grave. Such life-cycle analyses of energy technologies are essential, especially as material and energy flows are often interwoven, and divergent emissions into the environment may occur at different life-cycle-stages. This approach is well exemplified by our description of material and energy flows in four commercial PV technologies, i.e., mono-crystalline silicon, multi-crystalline silicon, ribbon-silicon, and cadmium telluride. The same life-cycle approach is applied to the balance of system that supports flat, fixed PV modules during operation. We also discuss the life-cycle environmental metrics for a concentration PV system with a tracker and lenses to capture more sunlight per cell area than the flat, fixed system but requires large auxiliary components. Select life-cycle risk indicators for PV, i.e., fatalities, injures, and maximum consequences are evaluated in a comparative context with other electricity-generation pathways.

  17. Energy Department Announces $60 Million to Drive Affordable, Efficient

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

    Solar Power | Department of Energy Announces $60 Million to Drive Affordable, Efficient Solar Power Energy Department Announces $60 Million to Drive Affordable, Efficient Solar Power October 22, 2013 - 12:00am Addthis Building on President Obama's broad-based plan to cut carbon pollution and support clean energy innovation across the country, Energy Secretary Moniz announced today about $60 million to support innovative solar energy research and development. As part of the Department's

  18. The drive toward hydrogen vehicles just got shorter

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

    The drive toward hydrogen vehicles just got shorter The drive toward hydrogen vehicles just got shorter Researchers have revealed a new single-stage method for recharging the hydrogen storage compound ammonia borane. March 21, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials Los

  19. Secrets of the Motor That Drives Archaea Revealed

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

    Secrets of the Motor That Drives Archaea Revealed Secrets of the Motor That Drives Archaea Revealed Print Thursday, 14 February 2013 00:00 An international team led by John Tainer of the Life Sciences Division and Sonja-Verena Albers of the Max Planck Institute for Terrestrial Microbiology has solved the protein structure of the archaellum, the motor that propels motile species of Archaea (microorganisms), life's third domain. The Albers lab zeroed in on the crucial protein with genetics, and

  20. Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions,

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

    Technological Breakthroughs | Department of Energy New Biofuels Projects to Drive Cost Reductions, Technological Breakthroughs Secretary Moniz Announces New Biofuels Projects to Drive Cost Reductions, Technological Breakthroughs August 1, 2013 - 2:00pm Addthis News Media Contact (202) 586-4940 WASHINGTON - During remarks at the Energy Department's Biomass 2013 annual conference, Secretary Moniz today highlighted the important role biofuels play in the Administration's Climate Action Plan to

  1. High Efficiency Driving Electronics for General Illumination LED Luminaires

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

    (Technical Report) | SciTech Connect High Efficiency Driving Electronics for General Illumination LED Luminaires Citation Details In-Document Search Title: High Efficiency Driving Electronics for General Illumination LED Luminaires New generation of standalone LED driver platforms developed, which are more efficient These LED Drivers are more efficient (≥90%), smaller in size ( 0.15 in3/watt), lower in cost ( 12 cents/watt in high volumes in millions of units). And these products are very

  2. High Efficiency Driving Electronics for General Illumination LED Luminaires

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect SciTech Connect Search Results Technical Report: High Efficiency Driving Electronics for General Illumination LED Luminaires Citation Details In-Document Search Title: High Efficiency Driving Electronics for General Illumination LED Luminaires New generation of standalone LED driver platforms developed, which are more efficient These LED Drivers are more efficient (≥90%), smaller in size ( 0.15 in3/watt), lower in cost ( 12 cents/watt in high volumes in

  3. Long Duration Directional Drives for Star Formation and Photoionization

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect Long Duration Directional Drives for Star Formation and Photoionization Citation Details In-Document Search Title: Long Duration Directional Drives for Star Formation and Photoionization This research will; confirm the possibility of studying the structure and evolution of star-forming regions of molecular clouds in the laboratory; test the cometary model for the formation of the pillar structures in molecular clouds; assess the effect of magnetic fields

  4. Impact of Driving Behavior on PHEV Fuel Consumption for Different

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

    Powertrain, Component Sizes and Control | Department of Energy Driving Behavior on PHEV Fuel Consumption for Different Powertrain, Component Sizes and Control Impact of Driving Behavior on PHEV Fuel Consumption for Different Powertrain, Component Sizes and Control 2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. PDF icon vss011_rousseau_2010_o.pdf More Documents & Publications PHEV Control Strategy

  5. Energy Department Investment Drives Clean Energy Innovation at Federal

    Energy Savers [EERE]

    Facilities | Department of Energy Investment Drives Clean Energy Innovation at Federal Facilities Energy Department Investment Drives Clean Energy Innovation at Federal Facilities January 27, 2016 - 1:30pm Addthis The U.S. Department of Energy (DOE) today announced $2.85 million in funding for four projects that will advance the development of renewable energy technologies at facilities across the federal government. As the nation's largest single user of energy, the federal government is

  6. Driving and detecting ferromagnetic resonance in insulators with the spin

    Office of Scientific and Technical Information (OSTI)

    Hall effect (Journal Article) | DOE PAGES DOE PAGES Search Results Publisher's Accepted Manuscript: Driving and detecting ferromagnetic resonance in insulators with the spin Hall effect This content will become publicly available on November 5, 2016 Title: Driving and detecting ferromagnetic resonance in insulators with the spin Hall effect Authors: Sklenar, Joseph ; Zhang, Wei ; Jungfleisch, Matthias B. ; Jiang, Wanjun ; Chang, Houchen ; Pearson, John E. ; Wu, Mingzhong ; Ketterson, John B.

  7. Advanced Electric Drive Vehicles … A Comprehensive Education, Training,

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

    and Outreach Program | Department of Energy 2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon arravt034_ti_ferdowsi_2012_o.pdf More Documents & Publications Advanced Electric Drive Vehicles … A Comprehensive Education, Training, and Outreach Program Advanced Electric Drive Vehicles … A Comprehensive Education, Training, and Outreach Program US-India S&T Agreement

  8. Advanced Electric Drive Vehicles … A Comprehensive Education, Training,

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

    and Outreach Program | Department of Energy 1 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon arravt034_ti_ferdowsi_2011_p.pdf More Documents & Publications Advanced Electric Drive Vehicles … A Comprehensive Education, Training, and Outreach Program Advanced Electric Drive Vehicles … A Comprehensive Education, Training, and Outreach Program EcoCAR 2 Plugging into the Future

  9. Advanced Electric Drive Vehicles … A Comprehensive Education, Training,

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

    and Outreach Program | Department of Energy 0 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. PDF icon tiarravt034_ferdowsi_2010_o.pdf More Documents & Publications Advanced Electric Drive Vehicles … A Comprehensive Education, Training, and Outreach Program Advanced Electric Drive Vehicles … A Comprehensive Education, Training, and Outreach Program 2010 DOE EERE Vehicle Technologies Program Merit Review

  10. Navistar-Driving efficiency with integrated technology | Department of

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

    Energy Navistar-Driving efficiency with integrated technology Navistar-Driving efficiency with integrated technology Navistar global approach to deliver better fuel economy is centered around some of the main themes of the greenhouse gas (GHG) regulations PDF icon deer11_mooney.pdf More Documents & Publications The Business of Near Zero Emissions SuperTruck … Development and Demonstration of a Fuel-Efficient Class 8 Tractor & Trailer SuperTruck … Development and Demonstration of a

  11. Combined Electric Machine and Current Source Inverter Drive System - Energy

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

    Innovation Portal Hydrogen and Fuel Cell Hydrogen and Fuel Cell Energy Analysis Energy Analysis Advanced Materials Advanced Materials Find More Like This Return to Search Combined Electric Machine and Current Source Inverter Drive System Oak Ridge National Laboratory Contact ORNL About This Technology Publications: PDF Document Publication 11-G00249_ID2505.pdf (764 KB) Technology Marketing SummaryThis technology is a drive system that includes a permanent magnet-less (PM-L) electric motor

  12. NREL Team Investigates Secondary Uses for Electric Drive Vehicle Batteries

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

    - News Releases | NREL Team Investigates Secondary Uses for Electric Drive Vehicle Batteries April 5, 2011 The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL), industry and academia are teaming to give batteries from electric drive vehicles (EV) a "second life." NREL's partner is an industry-academia team led by the California Center for Sustainable Energy (CCSE). Possible secondary uses for lithium ion (Li-ion) batteries include residential and

  13. Electrical Motor Drive Apparatus and Method - Energy Innovation Portal

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

    Vehicles and Fuels Vehicles and Fuels Industrial Technologies Industrial Technologies Find More Like This Return to Search Electrical Motor Drive Apparatus and Method Oak Ridge National Laboratory Contact ORNL About This Technology Technology Marketing SummaryThis invention discloses an electrical motor drive topology that can significantly reduce the inverter dc bus ripple currents and thus the requirement of the dc bus capacitance. It enables the inverter to cost-effectively operate in

  14. Driving Progress Through the EV Everywhere Utility Partnership | Department

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

    of Energy Driving Progress Through the EV Everywhere Utility Partnership Driving Progress Through the EV Everywhere Utility Partnership December 14, 2015 - 4:37pm Addthis Assistant Secretary Danielson spoke about the importance of stakeholder collaboration to realize the goals of EV Everywhere. | Photo courtesy of Ameren Corporation Assistant Secretary Danielson spoke about the importance of stakeholder collaboration to realize the goals of EV Everywhere. | Photo courtesy of Ameren

  15. Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) |

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

    Department of Energy Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) Computer-Aided Engineering for Electric Drive Vehicle Batteries (CAEBAT) 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation PDF icon es099_pesaran_2011_p.pdf More Documents & Publications Overview of Computer-Aided Engineering of Batteries (CAEBAT) and Introduction to Multi-Scale, Multi-Dimensional (MSMD) Modeling of Lithium-Ion

  16. Development and Implementation of Degree Programs in Electric Drive Vehicle

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

    Technology | Department of Energy 2 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting PDF icon arravt035_ti_ng_2012_o.pdf More Documents & Publications Development and Implementation of Degree Programs in Electric Drive Vehicle Technology Development and Implementation of Degree Programs in Electric Drive Vehicle Technology GATE: Energy Efficient Vehicles for Sustainable Mobility

  17. US DRIVE Electrochemical Energy Storage Technical Team Roadmap | Department

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

    of Energy Electrochemical Energy Storage Technical Team Roadmap US DRIVE Electrochemical Energy Storage Technical Team Roadmap This U.S. DRIVE electrochemical energy storage roadmap describes ongoing and planned efforts to develop electrochemical energy storage technologies for plug-in electric vehicles (PEVs). The Energy Storage activity comprises a number of research areas (including advanced materials research, cell level research, battery development, and enabling R&D which includes

  18. US DRIVE Fuel Pathway Integration Technical Team Roadmap | Department of

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

    Energy Fuel Pathway Integration Technical Team Roadmap US DRIVE Fuel Pathway Integration Technical Team Roadmap The Fuel Pathway Integration Technical Team (FPITT) supports the U.S. DRIVE Partnership (the Partnership) in the identification and evaluation of implementation scenarios for fuel cell technology pathways, including hydrogen and fuel cell electric vehicles in the transportation sector, both during a transition period and in the long term. PDF icon fpitt_roadmap_june2013.pdf More

  19. Electric Drive Status and Challenges | Department of Energy

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

    Status and Challenges Electric Drive Status and Challenges Presentation given at the EV Everywhere Grand Challenge - Electric Drive (Power Electronics and Electric Machines) Workshop on July 24, 2012 held at the Doubletree O'Hare, Chicago, IL. PDF icon 4_rogers_ed.pdf More Documents & Publications Power Electronics and Thermal Management Breakout Session Advanced Power Electronics and Electric Motors (APEEM) R&D Program Overview Advanced Power Electronics and Electric Motors (APEEM)

  20. Thirteen States Receive Energy Department Awards to Drive Greater Energy

    Energy Savers [EERE]

    Efficiency, Save Money | Department of Energy States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money November 26, 2013 - 2:44pm Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on the Obama Administration's efforts to double energy productivity by 2030 and help communities save on energy bills, the Energy Department today awarded nearly $4 million to

  1. Thirteen States Receive Energy Department Awards to Drive Greater Energy

    Energy Savers [EERE]

    Efficiency, Save Money | Department of Energy Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money Thirteen States Receive Energy Department Awards to Drive Greater Energy Efficiency, Save Money November 26, 2013 - 12:00am Addthis Building on the Obama Administration's efforts to double energy productivity by 2030 and help communities save on energy bills, the Energy Department today awarded nearly $4 million to 13 states to increase statewide

  2. Students' Clean Tech Projects: Driving Commercial Success | Department of

    Energy Savers [EERE]

    Energy Students' Clean Tech Projects: Driving Commercial Success Students' Clean Tech Projects: Driving Commercial Success October 6, 2011 - 3:20pm Addthis UCSD Ph.D. candidate (structural engineering) and von Liebig Fellow Arun Manohar demonstrates unique Enhanced Infrared Thermography algorithm to identify structural defects in composite wind turbine plates. | Image Courtesy of the San Diego Renewable Energy Fellowship. UCSD Ph.D. candidate (structural engineering) and von Liebig Fellow

  3. Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive

    Energy Savers [EERE]

    America | Department of Energy Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America Advanced Biofuels: How Scientists are Engineering Bacteria to Help Drive America December 6, 2011 - 2:12pm Addthis Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars into gasoline, diesel and jet fuel. | Image courtesy of Berkeley Lab. Strains of E. coli bacteria were engineered to digest switchgrass biomass and synthesize its sugars

  4. Agriculture and Energy Departments Announce New Investments to Drive

    Energy Savers [EERE]

    Innovations in Biofuels and Biobased Products | Department of Energy Agriculture and Energy Departments Announce New Investments to Drive Innovations in Biofuels and Biobased Products Agriculture and Energy Departments Announce New Investments to Drive Innovations in Biofuels and Biobased Products July 25, 2012 - 1:37pm Addthis News Media Contact (202) 586-4940 WASHINGTON - As part of the Obama Administration's all-of-the-above strategy to enhance U.S. energy security, reduce America's

  5. Better Buildings Accelerators: Driving Uptake of Home Energy Information

    Energy Savers [EERE]

    and Upgrade Programs Nationwide | Department of Energy Accelerators: Driving Uptake of Home Energy Information and Upgrade Programs Nationwide Better Buildings Accelerators: Driving Uptake of Home Energy Information and Upgrade Programs Nationwide March 14, 2016 - 2:18pm Addthis The U.S. Department of Energy's Better Buildings Home Upgrade Program and Home Energy Information Accelerators work with partners across the nation and are making important progress in lowering the costs of energy

  6. Energy Department Announces $60 Million to Drive Affordable, Efficient

    Office of Environmental Management (EM)

    Solar Power | Department of Energy 60 Million to Drive Affordable, Efficient Solar Power Energy Department Announces $60 Million to Drive Affordable, Efficient Solar Power October 22, 2013 - 11:45am Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on President Obama's broad-based plan to cut carbon pollution and support clean energy innovation across the country, Energy Secretary Moniz announced today about $60 million to support innovative solar energy research and

  7. Energy Department Launches Competition to Drive Innovations in Wave Energy

    Office of Environmental Management (EM)

    | Department of Energy Competition to Drive Innovations in Wave Energy Energy Department Launches Competition to Drive Innovations in Wave Energy April 27, 2015 - 2:13pm Addthis The Energy Department today announced the opening of the registration period for the Wave Energy Prize competition that aims to double the state-of-the-art performance of wave energy conversion (WEC) devices over the next two years. By accelerating the development of WEC devices that capture more energy from ocean

  8. Innovation Unleashed: Sportscar Racing Takes Next Step toward Driving

    Office of Environmental Management (EM)

    Technology and Renewable Fuel Development | Department of Energy Innovation Unleashed: Sportscar Racing Takes Next Step toward Driving Technology and Renewable Fuel Development Innovation Unleashed: Sportscar Racing Takes Next Step toward Driving Technology and Renewable Fuel Development March 24, 2015 - 1:35pm Addthis All cars competing in the TUDOR Championship utilize alternative fuels including E10, cellulosic E85 and renewable synthetic clean diesel. The Department of Energy supports

  9. Sustainable Transportation Day Drives Innovation Forward | Department of

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

    Energy Sustainable Transportation Day Drives Innovation Forward Sustainable Transportation Day Drives Innovation Forward June 24, 2015 - 3:29pm Addthis Sustainable Trucking 1 of 13 Sustainable Trucking The Freightliner SuperTruck stopped by Energy Department headquarters as part of Sustainable Transportation Day on Monday, June 22, 2015. The Energy Department-supported truck has achieved a fuel efficiency of 12.2 miles per gallon, more than double that of the baseline vehicle. Image: Matt

  10. Test Driving the Toyota Mirai | Department of Energy

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

    Test Driving the Toyota Mirai Test Driving the Toyota Mirai Watch Secretary Ernest Moniz take a spin in the Toyota Mirai, the first fuel cell electric vehicle available for sale. FCTO Home About the Fuel Cell Technologies Office Hydrogen Production Hydrogen Delivery Hydrogen Storage Fuel Cells Technology Validation Manufacturing Safety, Codes & Standards Education Market Transformation Systems Analysis Information Resources Financial Opportunities News Events Contact Us

  11. Tips: Buying and Driving Fuel Efficient and Alternative Fuel Vehicles |

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

    Department of Energy Electricity & Fuel » Vehicles & Fuels » Tips: Buying and Driving Fuel Efficient and Alternative Fuel Vehicles Tips: Buying and Driving Fuel Efficient and Alternative Fuel Vehicles Electric vehicles are just one option for buyers interested in fuel efficient or alternative fuel vehicles. | Photo courtesy of Dennis Schroeder, NREL. Electric vehicles are just one option for buyers interested in fuel efficient or alternative fuel vehicles. | Photo courtesy of

  12. High-field half-cycle terahertz radiation from relativistic laser interaction with thin solid targets

    SciTech Connect (OSTI)

    Ding, W. J.; Koh, W. S. [A-STAR Institute of High Performance Computing, Singapore 138632 (Singapore)] [A-STAR Institute of High Performance Computing, Singapore 138632 (Singapore); Sheng, Z. M. [Key Laboratory for Laser Plasmas (MoE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China) [Key Laboratory for Laser Plasmas (MoE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China); SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom)

    2013-11-11

    It is found that half-cycle terahertz (THz) pulses with the peak field over 100 MV/cm can be produced in ultrashort intense laser interactions with thin solid targets. These THz pulses are shown to emit from both the front and rear sides of the solid target and are attributed to the coherent transition radiation by laser-produced ultrashort fast electron bunches. After the primary THz pulses, subsequent secondary half-cycle pulses are generated while some refluxing electrons cross the vacuum-target interfaces. Since such strong THz radiation is well synchronized with the driving lasers, it is particularly suitable for applications in various pump-probe experiments.

  13. Optimization and Comparison of Direct and Indirect Supercritical Carbon Dioxide Power Plant Cycles for Nuclear Applications

    SciTech Connect (OSTI)

    Edwin A. Harvego; Michael G. McKellar

    2011-11-01

    There have been a number of studies involving the use of gases operating in the supercritical mode for power production and process heat applications. Supercritical carbon dioxide (CO2) is particularly attractive because it is capable of achieving relatively high power conversion cycle efficiencies in the temperature range between 550 C and 750 C. Therefore, it has the potential for use with any type of high-temperature nuclear reactor concept, assuming reactor core outlet temperatures of at least 550 C. The particular power cycle investigated in this paper is a supercritical CO2 Recompression Brayton Cycle. The CO2 Recompression Brayton Cycle can be used as either a direct or indirect power conversion cycle, depending on the reactor type and reactor outlet temperature. The advantage of this cycle when compared to the helium Brayton cycle is the lower required operating temperature; 550 C versus 850 C. However, the supercritical CO2 Recompression Brayton Cycle requires an operating pressure in the range of 20 MPa, which is considerably higher than the required helium Brayton cycle operating pressure of 8 MPa. This paper presents results of analyses performed using the UniSim process analyses software to evaluate the performance of both a direct and indirect supercritical CO2 Brayton Recompression cycle for different reactor outlet temperatures. The direct supercritical CO2 cycle transferred heat directly from a 600 MWt reactor to the supercritical CO2 working fluid supplied to the turbine generator at approximately 20 MPa. The indirect supercritical CO2 cycle assumed a helium-cooled Very High Temperature Reactor (VHTR), operating at a primary system pressure of approximately 7.0 MPa, delivered heat through an intermediate heat exchanger to the secondary indirect supercritical CO2 Brayton Recompression cycle, again operating at a pressure of about 20 MPa. For both the direct and indirect cycles, sensitivity calculations were performed for reactor outlet temperature between 550 C and 850 C. The UniSim models used realistic component parameters and operating conditions to model the complete reactor and power conversion systems. CO2 properties were evaluated, and the operating ranges of the cycles were adjusted to take advantage of the rapidly changing properties of CO2 near the critical point. The results of the analyses showed that, for the direct supercritical CO2 power cycle, thermal efficiencies in the range of 40 to 50% can be achieved. For the indirect supercritical CO2 power cycle, thermal efficiencies were approximately 10% lower than those obtained for the direct cycle over the same reactor outlet temperature range.

  14. Solar Fuels and Carbon Cycle 2.0 (Carbon Cycle 2.0) (Conference...

    Office of Scientific and Technical Information (OSTI)

    Solar Fuels and Carbon Cycle 2.0 (Carbon Cycle 2.0) Citation Details In-Document Search Title: Solar Fuels and Carbon Cycle 2.0 (Carbon Cycle 2.0) Paul Alivisatos, LBNL Director...

  15. Lanthanide Al-Ni base Ericsson cycle magnetic refrigerants

    DOE Patents [OSTI]

    Gschneidner, Jr., Karl A. (Ames, IA); Takeya, Hiroyuki (Ibaraki, JP)

    1995-10-31

    A magnetic refrigerant for a magnetic refrigerator using the Ericsson thermodynamic cycle comprises DyAlNi and (Gd.sub.0.54 Er.sub.0.46)AlNi alloys having a relatively constant .DELTA.Tmc over a wide temperature range.

  16. Lanthanide Al-Ni base Ericsson cycle magnetic refrigerants

    DOE Patents [OSTI]

    Gschneidner, K.A. Jr.; Takeya, Hiroyuki

    1995-10-31

    A magnetic refrigerant for a magnetic refrigerator using the Ericsson thermodynamic cycle comprises DyAlNi and (Gd{sub 0.54}Er{sub 0.46})AlNi alloys having a relatively constant {Delta}Tmc over a wide temperature range. 16 figs.

  17. Modeling of the influences of electron cyclotron current drive on neoclassical tearing modes

    SciTech Connect (OSTI)

    Chen, Long; Liu, Jinyuan; Sun, Jizhong; Sun, Guanglan; Duan, Ping

    2015-05-15

    Influences of external current drive on neoclassical tearing modes are studied numerically with a set of compressible magnetohydrodynamics equations. By considering the effects of driven current parameters and its deposition timing, and by examining the relationship between driven current and the missing bootstrap current, the basic requirements of deposition width and external current density for effectively suppressing neoclassical tearing modes are investigated. When the driven current density is able to compensate the missing bootstrap current and the deposition region is comparable with the saturated island, the suppression results are notable. Meanwhile, the pre-emptive strategy of current deposition reported experimentally is also evaluated, and the results agree with the experimental ones that early current deposition can enhance suppression effectiveness greatly. In addition, the deficiencies of continuous driven current are discussed when the plasma rotation has been taken into account, and the application of modulated current drive, which is synchronized in phase with the rotating island, can restore the stabilizing role under some conditions. The favorable parameters of modulation such as duty cycle are also addressed.

  18. Harmonia: A Globally Coordinated Garbage Collector for Arrays of Solid-state Drives

    SciTech Connect (OSTI)

    Kim, Youngjae; Oral, H Sarp; Shipman, Galen M; Lee, Junghee; Dillow, David A; Wang, Feiyi

    2011-01-01

    Solid-State Drives (SSDs) offer significant performance improvements over hard disk drives (HDD) on a number of workloads. The frequency of garbage collection (GC) activity is directly correlated with the pattern, frequency, and volume of write requests, and scheduling of GC is controlled by logic internal to the SSD. SSDs can exhibit significant performance degradations when garbage collection (GC) conflicts with an ongoing I/O request stream. When using SSDs in a RAID array, the lack of coordination of the local GC processes amplifies these performance degradations. No RAID controller or SSD available today has the technology to overcome this limitation. This paper presents Harmonia, a Global Garbage Collection (GGC) mechanism to improve response times and reduce performance variability for a RAID array of SSDs. Our proposal includes a high-level design of SSD-aware RAID controller and GGC-capable SSD devices, as well as algorithms to coordinate the global GC cycles. Our simulations show that this design improves response time and reduces performance variability for a wide variety of enterprise workloads. For bursty, write dominant workloads response time was improved by 69% while performance variability was reduced by 71%.

  19. Control system options and strategies for supercritical CO2 cycles.

    SciTech Connect (OSTI)

    Moisseytsev, A.; Kulesza, K. P.; Sienicki, J. J.; Nuclear Engineering Division; Oregon State Univ.

    2009-06-18

    The Supercritical Carbon Dioxide (S-CO{sub 2}) Brayton Cycle is a promising alternative to Rankine steam cycle and recuperated gas Brayton cycle energy converters for use with Sodium-Cooled Fast Reactors (SFRs), Lead-Cooled Fast Reactors (LFRs), as well as other advanced reactor concepts. The S-CO{sub 2} Brayton Cycle offers higher plant efficiencies than Rankine or recuperated gas Brayton cycles operating at the same liquid metal reactor core outlet temperatures as well as reduced costs or size of key components especially the turbomachinery. A new Plant Dynamics Computer Code has been developed at Argonne National Laboratory for simulation of a S-CO{sub 2} Brayton Cycle energy converter coupled to an autonomous load following liquid metal-cooled fast reactor. The Plant Dynamics code has been applied to investigate the effectiveness of a control strategy for the S-CO{sub 2} Brayton Cycle for the STAR-LM 181 MWe (400 MWt) Lead-Cooled Fast Reactor. The strategy, which involves a combination of control mechanisms, is found to be effective for controlling the S-CO{sub 2} Brayton Cycle over the complete operating range from 0 to 100 % load for a representative set of transient load changes. While the system dynamic analysis of control strategy performance for STARLM is carried out for a S-CO{sub 2} Brayton Cycle energy converter incorporating an axial flow turbine and compressors, investigations of the S-CO{sub 2} Brayton Cycle have identified benefits from the use of centrifugal compressors which offer a wider operating range, greater stability near the critical point, and potentially further cost reductions due to fewer stages than axial flow compressors. Models have been developed at Argonne for the conceptual design and performance analysis of centrifugal compressors for use in the SCO{sub 2} Brayton Cycle. Steady state calculations demonstrate the wider operating range of centrifugal compressors versus axial compressors installed in a S-CO{sub 2} Brayton Cycle as well as the benefits in expanding the range over which individual control mechanisms are effective for cycle control. However, a combination of mechanisms is still required for control of the S-CO{sub 2} Brayton Cycle between 0 and 100 % load. An effort is underway to partially validate the Argonne models and codes by means of comparison with data from tests carried out using the small-scale Sandia Brayton Loop (SBL) recuperated gas closed Brayton cycle facility. The centrifugal compressor model has been compared with data from the SBL operating with nitrogen gas and good agreement is obtained between calculations and the measured data for the compressor outlet pressure versus flow rate, although it is necessary to assume values for certain model parameters which require information about the configuration or dimensions of the compressor components that is unavailable. Unfortunately, the compressor efficiency cannot be compared with experiment data due to the lack of outlet temperature data. A radial inflow turbine model has been developed to enable further comparison of calculations with data from the SBL which incorporates both a radial inflow turbine as well as a radial compressor. Preliminary calculations of pressure ratio and efficiency versus flow rate have been carried out using the radial inflow turbine model.

  20. Carbon Cycle Engineering | Open Energy Information

    Open Energy Info (EERE)

    Cycle Engineering Jump to: navigation, search Name: Carbon Cycle Engineering Address: 13725 Dutch Creek Road Place: Athens, Ohio Zip: 45701 Sector: Biofuels, Biomass, Efficiency,...

  1. New Cycle Capital LLC | Open Energy Information

    Open Energy Info (EERE)

    Cycle Capital LLC Jump to: navigation, search Name: New Cycle Capital, LLC. Place: San Francisco, California Zip: 94103 Product: San Francisco-based venture capitalist firm...

  2. Fuel Cycle Research and Development Presentation Title

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

    that improve current fuel cycle performance and enable a sustainable fuel cycle, with minimal processing, waste generation, and potential for material diversion to provide options ...

  3. Tunnel and Subsurface Void Detection and Range to Target Measurement

    SciTech Connect (OSTI)

    Phillip B. West

    2009-06-01

    Engineers and technicians at the Idaho National Laboratory invented, designed, built and tested a device capable of detecting and measuring the distance to, an underground void, or tunnel. Preliminary tests demonstrated positive detection of, and range to, a void thru as much as 30 meters of top-soil earth. Device uses acoustic driving point impedance principles pioneered by the Laboratory for well-bore physical properties logging. Data receipts recorded by the device indicates constructive-destructive interference patterns characteristic of acoustic wave reflection from a downward step-change in impedance mismatch. Prototype tests demonstrated that interference patterns in receipt waves could depict the patterns indicative of specific distances. A tool with this capability can quickly (in seconds) indicate the presence and depth/distance of a void or tunnel. Using such a device, border security and military personnel can identify threats of intrusion or weapons caches in most all soil conditions including moist and rocky.

  4. U.S. First Responder Safety Training for Advanced Electric Drive...

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

    First Responder Safety Training for Advanced Electric Drive Vehicle Presentation U.S. First Responder Safety Training for Advanced Electric Drive Vehicle Presentation 2010 DOE...

  5. SunLine Test Drives Hydrogen Bus: Hydrogen Fuel Cell & Infrastructure...

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

    Test Drives Hydrogen Bus: Hydrogen Fuel Cell & Infrastructure Technologies Program, Fuel Cell Bus Demonstration Projects Fact Sheet. SunLine Test Drives Hydrogen Bus: Hydrogen Fuel ...

  6. Using Community-Based Social Marketing to Drive Demand for Energy...

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

    Using Community-Based Social Marketing to Drive Demand for Energy Efficiency Using Community-Based Social Marketing to Drive Demand for Energy Efficiency Slides presented in the ...

  7. Is it Cost-Effective to Replace Old Eddy-Current Drives? - Motor Tip Sheet #12

    SciTech Connect (OSTI)

    2008-07-01

    New pulse-width-modulated (PWM) adjustable speed drives (ASDs) may be cost-effective replacements for aging or maintenance-intensive eddy-current drives.

  8. Secretary Chu to Kick-off the Electric Drive Transportation Associatio...

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

    to Kick-off the Electric Drive Transportation Association's Innovation Motorcade Secretary Chu to Kick-off the Electric Drive Transportation Association's Innovation Motorcade...

  9. Modeling the Nuclear Fuel Cycle

    SciTech Connect (OSTI)

    Jacob J. Jacobson; A. M. Yacout; G. E. Matthern; S. J. Piet; A. Moisseytsev

    2005-07-01

    The Advanced Fuel Cycle Initiative is developing a system dynamics model as part of their broad systems analysis of future nuclear energy in the United States. The model will be used to analyze and compare various proposed technology deployment scenarios. The model will also give a better understanding of the linkages between the various components of the nuclear fuel cycle that includes uranium resources, reactor number and mix, nuclear fuel type and waste management. Each of these components is tightly connected to the nuclear fuel cycle but usually analyzed in isolation of the other parts. This model will attempt to bridge these components into a single model for analysis. This work is part of a multi-national laboratory effort between Argonne National Laboratory, Idaho National Laboratory and United States Department of Energy. This paper summarizes the basics of the system dynamics model and looks at some results from the model.

  10. SNMR pulse sequence phase cycling

    DOE Patents [OSTI]

    Walsh, David O; Grunewald, Elliot D

    2013-11-12

    Technologies applicable to SNMR pulse sequence phase cycling are disclosed, including SNMR acquisition apparatus and methods, SNMR processing apparatus and methods, and combinations thereof. SNMR acquisition may include transmitting two or more SNMR pulse sequences and applying a phase shift to a pulse in at least one of the pulse sequences, according to any of a variety cycling techniques. SNMR processing may include combining SNMR from a plurality of pulse sequences comprising pulses of different phases, so that desired signals are preserved and indesired signals are canceled.

  11. Simple ocean carbon cycle models

    SciTech Connect (OSTI)

    Caldeira, K.; Hoffert, M.I.; Siegenthaler, U.

    1994-02-01

    Simple ocean carbon cycle models can be used to calculate the rate at which the oceans are likely to absorb CO{sub 2} from the atmosphere. For problems involving steady-state ocean circulation, well calibrated ocean models produce results that are very similar to results obtained using general circulation models. Hence, simple ocean carbon cycle models may be appropriate for use in studies in which the time or expense of running large scale general circulation models would be prohibitive. Simple ocean models have the advantage of being based on a small number of explicit assumptions. The simplicity of these ocean models facilitates the understanding of model results.

  12. Evaluation of Powertrain Options and Component Sizing for MD and HD Applications on Real World Drive Cycles

    Broader source: Energy.gov [DOE]

    2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

  13. Front Range Energy LLC | Open Energy Information

    Open Energy Info (EERE)

    search Logo: Front Range Energy LLC Name: Front Range Energy LLC Address: 31375 Great Western Dr Place: Windsor, Colorado Zip: 80550 Region: Rockies Area Sector: Biofuels...

  14. Correcting radar range measurements for atmospheric propagation...

    Office of Scientific and Technical Information (OSTI)

    Correcting radar range measurements for atmospheric propagation effects. Citation Details In-Document Search Title: Correcting radar range measurements for atmospheric propagation...

  15. Adiabat-shaping in indirect drive inertial confinement fusion

    SciTech Connect (OSTI)

    Baker, K. L.; Robey, H. F.; Milovich, J. L.; Jones, O. S.; Smalyuk, V. A.; Casey, D. T.; MacPhee, A. G.; Pak, A.; Celliers, P. M.; Clark, D. S.; Landen, O. L.; Peterson, J. L.; Berzak-Hopkins, L. F.; Weber, C. R.; Haan, S. W.; Dppner, T. D.; Dixit, S.; Hamza, A. V.; Jancaitis, K. S.; Kroll, J. J.; and others

    2015-05-15

    Adiabat-shaping techniques were investigated in indirect drive inertial confinement fusion experiments on the National Ignition Facility as a means to improve implosion stability, while still maintaining a low adiabat in the fuel. Adiabat-shaping was accomplished in these indirect drive experiments by altering the ratio of the picket and trough energies in the laser pulse shape, thus driving a decaying first shock in the ablator. This decaying first shock is designed to place the ablation front on a high adiabat while keeping the fuel on a low adiabat. These experiments were conducted using the keyhole experimental platform for both three and four shock laser pulses. This platform enabled direct measurement of the shock velocities driven in the glow-discharge polymer capsule and in the liquid deuterium, the surrogate fuel for a DT ignition target. The measured shock velocities and radiation drive histories are compared to previous three and four shock laser pulses. This comparison indicates that in the case of adiabat shaping the ablation front initially drives a high shock velocity, and therefore, a high shock pressure and adiabat. The shock then decays as it travels through the ablator to pressures similar to the original low-adiabat pulses when it reaches the fuel. This approach takes advantage of initial high ablation velocity, which favors stability, and high-compression, which favors high stagnation pressures.

  16. Cycling-Induced Changes in the Entropy Profiles of Lithium Cobalt Oxide Electrodes

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

    Hudak, N. S.; Davis, L. E.; Nagasubramanian, G.

    2014-12-09

    Entropy profiles of lithium cobalt oxide (LiCoO2) electrodes were measured at various stages in the cycle life to examine performance degradation and cycling-induced changes, or lack thereof, in thermodynamics. LiCoO2 electrodes were cycled at C/2 rate in half-cells (vs. lithium anodes) up to 20 cycles or C/5 rate in full cells (vs. MCMB anodes) up to 500 cycles. The electrodes were then subjected to entropy measurements (?E/?T, where E is open-circuit potential and T is temperature) in half-cells at regular intervals over the approximate range 0.5 ? x ? 1 in LixCoO2. Despite significant losses in capacity upon cycling, neithermorecycling rate resulted in any change to the overall shape of the entropy profile relative to an uncycled electrode, indicating retention of the basic LiCoO2 structure, lithium insertion mechanism, and thermodynamics. This confirms that cycling-induced performance degradation in LiCoO2 electrodes is primarily caused by kinetic barriers that increase with cycling. In the case of electrodes cycled at C/5, there was a subtle, quantitative, and gradual change in the entropy profile in the narrow potential range of the hexagonal-to-monoclinic phase transition. The observed change is indicative of a decrease in the intralayer lithium ordering that occurs at these potentials, and it demonstrates that a cyclinginduced structural disorder accompanies the kinetic degradation mechanisms.less

  17. GAX absorption cycle design process

    SciTech Connect (OSTI)

    Priedeman, D.K.; Christensen, R.N.

    1999-07-01

    This paper presents an absorption system design process that relies on computer simulations that are validated by experimental findings. An ammonia-water absorption heat pump cycle at 3 refrigeration tons (RT) and chillers at 3.3 RT and 5 RT (10.5 kW, 11.6 kW, and 17.6 kW) were initially modeled and then built and tested. The experimental results were used to calibrate both the cycle simulation and the component simulations, yielding computer design routines that could accurately predict component and cycle performance. Each system was a generator-absorber heat exchange (GAX) cycle, and all were sized for residential and light commercial use, where very little absorption equipment is currently used. The specific findings of the 5 RT (17.6 kW) chiller are presented. Modeling incorporated a heat loss from the gas-fired generator and pressure drops in both the evaporator and absorber. Simulation results and experimental findings agreed closely and validated the modeling method and simulation software.

  18. Finite driving rate and anisotropy effects in landslide modeling

    SciTech Connect (OSTI)

    Piegari, E.; Cataudella, V.; Di Maio, R.; Milano, L.; Nicodemi, M.

    2006-02-15

    In order to characterize landslide frequency-size distributions and individuate hazard scenarios and their possible precursors, we investigate a cellular automaton where the effects of a finite driving rate and the anisotropy are taken into account. The model is able to reproduce observed features of landslide events, such as power-law distributions, as experimentally reported. We analyze the key role of the driving rate and show that, as it is increased, a crossover from power-law to non-power-law behaviors occurs. Finally, a systematic investigation of the model on varying its anisotropy factors is performed and the full diagram of its dynamical behaviors is presented.

  19. FY2014 Electric Drive Technologies Annual Progress Report

    SciTech Connect (OSTI)

    2014-12-01

    The Electric Drive Technologies research and development (R&D) subprogram within the DOE Vehicle Technologies Office (VTO) provides support and guidance for many cutting-edge automotive technologies under development. Research is focused on developing power electronics (PE), electric motor, and traction drive system (TDS) technologies that will reduce system cost and improve their efficiency in transforming battery energy to useful work. The R&D is also aimed at better understanding and improving how various components of tomorrow’s automobiles will function as a unified system to improve fuel efficiency.

  20. Performance of wells in solution-gas-drive reservoirs

    SciTech Connect (OSTI)

    Camacho-V, R.G. ); Raghavan, R. )

    1989-12-01

    The authors examine buildup responses in solution-gas-drive reservoirs. The development presented here parallels the development for single-phase liquid flow. Analogs from pseudopressures and time transformations are presented and gas-drive-solutions are correlated with appropriate liquid-flow solutions. The influence of the skin region is documented. The basis for the success of the producing GOR method to compute the saturation distribution at shut-in is presented. The consequences of using the Perrine-Martin analog to analyze buildup data are discussed.