Sample records for optimized rotary energy

  1. Calculator program optimizes bit weight, rotary speed, reducing drilling cost

    SciTech Connect (OSTI)

    Simpson, M.A.

    1984-04-23T23:59:59.000Z

    Bit selection, bit weight, and rotary speed have repeatedly proven to be the most important and commonly overlooked alterable factors which control penetration rate, footage, and overall drilling cost. This is particularly true in offshore operations where drilling costs are highest and the greatest cost savings stand to be achieved through implementation of proven optimization techniques. The myth that bit weights and rotary speeds cannot be optimized in directional holes has hindered the industry from using this virtually cost-free method for reducing drilling cost. The use of optimized bit weights and rotary speeds in conjunction with minimum cost bit programs based on cost per foot analysis of previous bit runs in the area was implemented on a five-well platform in the Grand Isle Block 20 field, offshore Louisiana. Each of the directional wells was drilled substantially faster and cheaper than the discovery well, which was a straight hole. Average reductions in footage cost of 31.3%, based on daily operating cost of $30,000/day, and increase in average daily footage drilled of 45.2% were effected by ''collectively optimizing'' drilling performance. The ''Optimizer'' program is an HP-41CV adaptation of the Bourgoyne and Young drilling model. It was used to calculate the optimum bit weights and rotary speeds based on field drilling tests; historical bit and bearing wear data; and current operating conditions, cost, and constraints.

  2. ESP/rotary gas separator duo found to optimize production

    SciTech Connect (OSTI)

    Jacobs, G.H.

    1986-11-01T23:59:59.000Z

    A field test conducted on a low-volume waterflood well in West Texas equipped with an electric submersible pump (ESP) proved to rotary gas separator (RGS) to be more efficient than conventional reverse flow gas separators, achieving gas separation efficiencies close to 90%. Further, the RGS increased the run time of the ESP, thus lowering the wellbore fluid level and increasing oil production. The one drawback found is that RGSs can be susceptible to fluid erosion.

  3. Rim for rotary inertial energy storage device and method

    DOE Patents [OSTI]

    Knight, Jr., Charles E. (Knoxville, TN); Pollard, Roy E. (Powell, TN)

    1980-01-01T23:59:59.000Z

    The present invention is directed to an improved rim or a high-performance rotary inertial energy storage device (flywheel). The improved rim is fabricated from resin impregnated filamentary material which is circumferentially wound in a side-by-side relationship to form a plurality of discretely and sequentially formed concentric layers of filamentary material that are bound together in a resin matrix. The improved rim is provided by prestressing the filamentary material in each successive layer to a prescribed tension loading in accordance with a predetermined schedule during the winding thereof and then curing the resin in each layer prior to forming the next layer for providing a prestress distribution within the rim to effect a self-equilibrating compressive prestress within the windings which counterbalances the transverse or radial tensile stresses generated during rotation of the rim for inhibiting deleterious delamination problems.

  4. Energy management system for a rotary machine and method therefor

    DOE Patents [OSTI]

    Bowman, Michael John; Sinha, Gautam (NMN); Sheldon, Karl Edward

    2004-11-09T23:59:59.000Z

    In energy management system is provided for a power generating device having a working fluid intake in which the energy management system comprises an electrical dissipation device coupled to the power generating device and a dissipation device cooling system configured to direct a portion of a working fluid to the electrical dissipation device so as to provide thermal control to the electrical dissipation device.

  5. Rotary engine

    SciTech Connect (OSTI)

    Brownfield, L.A.

    1980-12-02T23:59:59.000Z

    The major components of this rotary engine are two equal sized rotary units, the housing containing them along with associated ignition and cooling systems. Each of the rotary units consists of a shaft, gear, two outer compressor wheels, and one center power wheel which has twice the axial thickness as the compressor wheel. All the wheels are cylindrical in shape with a lobe section comprising a 180/sup 0/ arc on the periphery of each wheel which forms an expanding and contracting volumetric chamber by means of leading and trailing lips. The lobes of the first rotary unit are situated 180/sup 0/ opposite the lobes of the second adjacent mating rotary unit, thus lobes can intermesh with its corresponding wheel.

  6. Integrated Energy System Dispatch Optimization

    E-Print Network [OSTI]

    Firestone, Ryan; Stadler, Michael; Marnay, Chris

    2006-01-01T23:59:59.000Z

    Energy System Dispatch Optimization Ryan Firestone, MichaelEnergy System Dispatch Optimization Ryan Firestone - Studentthe real-time dispatch optimization problem for a generic

  7. Solar heated rotary kiln

    DOE Patents [OSTI]

    Shell, Pamela K. (Tracy, CA)

    1984-01-01T23:59:59.000Z

    A solar heated rotary kiln utilized for decomposition of materials, such as zinc sulfate. The rotary kiln has an open end and is enclosed in a sealed container having a window positioned for directing solar energy into the open end of the kiln. The material to be decomposed is directed through the container into the kiln by a feed tube. The container is also provided with an outlet for exhaust gases and an outlet for spent solids, and rests on a tiltable base. The window may be cooled and kept clear of debris by coolant gases.

  8. American Institute of Aeronautics and Astronautics Optimal Heavy Fuel Direct Injection analysis in a Rotary

    E-Print Network [OSTI]

    1 American Institute of Aeronautics and Astronautics Optimal Heavy Fuel Direct Injection analysis = Turbulent dissipation CFD = Computation Fluid Dynamics DPM = Discrete phase modeling DOE = Design objective of this computational study is to explore the optimum fuel injection for a 0.2 liter direct

  9. Sandia Energy - Wind Plant Optimization

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

    Wind Plant Optimization Home Stationary Power Energy Conversion Efficiency Wind Energy Wind Plant Optimization Wind Plant OptimizationTara Camacho-Lopez2015-05-29T21:33:21+00:00...

  10. Predictive Energy Optimization

    E-Print Network [OSTI]

    Dickinson, P.

    2013-01-01T23:59:59.000Z

    Predictive?Energy?Optimization Peter?Dickinson Phone:?+1?(415)?233?2306 Email:??Peterd@buildingiq.com Twitter:??@Pete_BIQ BuildingIQ?Overview 2 ? Software?to?intelligently?assess?and?control?HVAC? energy for?commercial?building?portfolios...

  11. Nuclear Energy Density Optimization

    E-Print Network [OSTI]

    M. Kortelainen; T. Lesinski; J. Moré; W. Nazarewicz; J. Sarich; N. Schunck; M. V. Stoitsov; S. Wild

    2010-05-27T23:59:59.000Z

    We carry out state-of-the-art optimization of a nuclear energy density of Skyrme type in the framework of the Hartree-Fock-Bogoliubov (HFB) theory. The particle-hole and particle-particle channels are optimized simultaneously, and the experimental data set includes both spherical and deformed nuclei. The new model-based, derivative-free optimization algorithm used in this work has been found to be significantly better than standard optimization methods in terms of reliability, speed, accuracy, and precision. The resulting parameter set UNEDFpre results in good agreement with experimental masses, radii, and deformations and seems to be free of finite-size instabilities. An estimate of the reliability of the obtained parameterization is given, based on standard statistical methods. We discuss new physics insights offered by the advanced covariance analysis.

  12. Solar-heated rotary kiln

    DOE Patents [OSTI]

    Shell, P.K.

    1982-04-14T23:59:59.000Z

    A solar heated rotary kiln utilized for decomposition of materials, such as zinc sulfate is disclosed. The rotary kiln has an open end and is enclosed in a sealed container having a window positioned for directing solar energy into the open end of the kiln. The material to be decomposed is directed through the container into the kiln by a feed tube. The container is also provided with an outlet for exhaust gases and an outlet for spent solids, and rests on a tiltable base. The window may be cooled and kept clear of debris by coolant gases.

  13. Energy optimization system

    DOE Patents [OSTI]

    Zhou, Zhi; de Bedout, Juan Manuel; Kern, John Michael; Biyik, Emrah; Chandra, Ramu Sharat

    2013-01-22T23:59:59.000Z

    A system for optimizing customer utility usage in a utility network of customer sites, each having one or more utility devices, where customer site is communicated between each of the customer sites and an optimization server having software for optimizing customer utility usage over one or more networks, including private and public networks. A customer site model for each of the customer sites is generated based upon the customer site information, and the customer utility usage is optimized based upon the customer site information and the customer site model. The optimization server can be hosted by an external source or within the customer site. In addition, the optimization processing can be partitioned between the customer site and an external source.

  14. Stirling cycle rotary engine

    SciTech Connect (OSTI)

    Chandler, J.A.

    1988-06-28T23:59:59.000Z

    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.

  15. Rotary filtration system

    DOE Patents [OSTI]

    Herman, David T. (Aiken, SC); Maxwell, David N. (Aiken, SC)

    2011-04-19T23:59:59.000Z

    A rotary filtration apparatus for filtering a feed fluid into permeate is provided. The rotary filtration apparatus includes a container that has a feed fluid inlet. A shaft is at least partially disposed in the container and has a passageway for the transport of permeate. A disk stack made of a plurality of filtration disks is mounted onto the shaft so that rotation of the shaft causes rotation of the filtration disks. The filtration disks may be made of steel components and may be welded together. The shaft may penetrate a filtering section of the container at a single location. The rotary filtration apparatus may also incorporate a bellows seal to prevent leakage along the shaft, and an around the shaft union rotary joint to allow for removal of permeate. Various components of the rotary filtration apparatus may be removed as a single assembly.

  16. DOE Zero Energy Ready Home Webinar: Building Energy Optimization...

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

    Building Energy Optimization (BEopt) Software DOE Zero Energy Ready Home Webinar: Building Energy Optimization (BEopt) Software This webinar was presented on May 15, 2014 and gives...

  17. Energy Optimization (Electric)- Commercial Efficiency Program

    Broader source: Energy.gov [DOE]

    The Energy Optimization Programs, administered by WECC, provides commercial electric incentives for the following Michigan utilities:

  18. Energy Optimization (Electric)- Residential Efficiency Program

    Broader source: Energy.gov [DOE]

    The Energy Optimization Programs, administered by WECC, provides residential electric incentives for the following Michigan utilities:

  19. Optimization Online - Optimal management and sizing of energy ...

    E-Print Network [OSTI]

    Pavithra Harsha

    2012-07-30T23:59:59.000Z

    Jul 30, 2012 ... Optimal management and sizing of energy storage under dynamic pricing for the efficient integration of renewable energy. Pavithra Harsha ...

  20. Process and Energy Optimization Revitalizes Energy Management at Eastman

    E-Print Network [OSTI]

    Greenwaldt, W. C.

    2007-01-01T23:59:59.000Z

    In 2005, the Eastman-Texas Operations Energy Management Team (EMT), in response to rapidly increasing energy prices, initiated a new energy optimization program to optimize the site’s energy intensity. This new program utilized a process and energy...

  1. Cleanroom Energy Optimization Methods

    E-Print Network [OSTI]

    Naughton, P.; Schrecengost, R.

    2004-01-01T23:59:59.000Z

    significantly to the bottom line. Semiconductor Cleanroom Energy Based upon surveys the Semiconductor industry has over 12,800,000 ft2 (1,190,000 m2) of cleanroom space in the United States varying in cleanliness from Class M1 (ISO Class 3) to Class M6... (ISO Class 9). These cleanrooms have recirculation air handlers moving millions of cubic feet (cubic meters) of air to transport contamination out of the cleanroom and maintain the room?s cleanliness. Whereas, many in the semiconductor industry...

  2. Rotary Microfilter Media Evaluation

    SciTech Connect (OSTI)

    Poirier, M

    2005-04-20T23:59:59.000Z

    Savannah River National Laboratory (SRNL) received funding from DOE EM-21, Office of Cleanup Technologies, to develop the rotary microfilter for high level radioactive service. One aspect of this project evaluated alternative filter media to select one for the 2nd generation rotary microfilter being procured as a prefilter to a small column ion exchange process. The authors conducted screening tests on a variety of filter media and pore sizes using a stirred cell followed by pilot-scale testing on a more limited number of filter media and pore sizes with a three disk rotary microfilter. These tests used 5.6 molar sodium supernate, and sludge plus monosodium titanate (MST) solids. The conclusions from this work are: (1) The 0.1 {micro} nominal TruMem{reg_sign} ceramic and the Pall PMM M050 (0.5 {micro} nominal) stainless steel filter media produced the highest flux in rotary filter testing. (2) The Pall PMM M050 media produced the highest flux of the stainless steel media tested in rotary filter testing. (3) The Pall PMM M050 media met filtrate quality requirements for the rotary filter. (4) The 0.1 {micro} TruMem{reg_sign} and 0.1 {micro} Pall PMM media met filtrate quality requirements as well. (5) The Pall PMM M050 media produced comparable flux to the 0.1 {micro} TruMem{reg_sign} media, and proved more durable and easier to weld. Based on these test results, the authors recommend Pall PMM M050 filter media for the 2nd generation rotary microfilter.

  3. Coal desulfurization in a rotary kiln combustor

    SciTech Connect (OSTI)

    Cobb, J.T. Jr.

    1992-09-11T23:59:59.000Z

    The purpose of this project was to demonstrate the combustion of coal and coal wastes in a rotary kiln reactor with limestone addition for sulfur control. The rationale for the project was the perception that rotary systems could bring several advantages to combustion of these fuels, and may thus offer an alternative to fluid-bed boilers. Towards this end, an existing wood pyrolysis kiln (the Humphrey Charcoal kiln) was to be suitably refurbished and retrofitted with a specially designed version of a patented air distributor provided by Universal Energy, Inc. (UEI). As the project progressed beyond the initial stages, a number of issues were raised regarding the feasibility and the possible advantages of burning coals in a rotary kiln combustor and, in particular, the suitability of the Humphrey Charcoal kiln as a combustor. Instead, an opportunity arose to conduct combustion tests in the PEDCO Rotary Cascading-Bed Boiler (RCBB) commercial demonstration unit at the North American Rayon CO. (NARCO) in Elizabethton, TN. The tests focused on anthracite culm and had two objectives: (a) determine the feasibility of burning anthracite culms in a rotary kiln boiler and (b) obtain input for any further work involving the Humphrey Charcoal kiln combustor. A number of tests were conducted at the PEDCO unit. The last one was conducted on anthracite culm procured directly from the feed bin of a commercial circulating fluid-bed boiler. The results were disappointing; it was difficult to maintain sustained combustion even when large quantities of supplemental fuel were used. Combustion efficiency was poor, around 60 percent. The results suggest that the rotary kiln boiler, as designed, is ill-suited with respect to low-grade, hard to burn solid fuels, such as anthracite culm. Indeed, data from combustion of bituminous coal in the PEDCO unit suggest that with respect to coal in general, the rotary kiln boiler appears inferior to the circulating fluid bed boiler.

  4. Optimization Online - Robust Energy Cost Optimization of Water ...

    E-Print Network [OSTI]

    Alexander Goryashko

    2011-02-21T23:59:59.000Z

    Feb 21, 2011 ... Robust Energy Cost Optimization of Water Distribution System with Uncertain Demand. Alexander Goryashko(ale_gory ***at*** rambler.ru)

  5. Rotary mechanical latch

    DOE Patents [OSTI]

    Spletzer, Barry L.; Martinez, Michael A.; Marron, Lisa C.

    2012-11-13T23:59:59.000Z

    A rotary mechanical latch for positive latching and unlatching of a rotary device with a latchable rotating assembly having a latching gear that can be driven to latched and unlatched states by a drive mechanism such as an electric motor. A cam arm affixed to the latching gear interfaces with leading and trailing latch cams affixed to a flange within the drive mechanism. The interaction of the cam arm with leading and trailing latch cams prevents rotation of the rotating assembly by external forces such as those due to vibration or tampering.

  6. Renewable Energy Optimization (REopt) (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-06-01T23:59:59.000Z

    REopt is an energy planning platform offering concurrent, multiple technology integration and optimization capabilities to help clients meet their cost savings and energy performance goals.

  7. Rotary magnetic heat pump

    DOE Patents [OSTI]

    Kirol, Lance D. (Shelly, ID)

    1988-01-01T23:59:59.000Z

    A rotary magnetic heat pump constructed without flow seals or segmented rotor accomplishes recuperation and regeneration by using split flow paths. Heat exchange fluid pumped through heat exchangers and returned to the heat pump splits into two flow components: one flowing counter to the rotor rotation and one flowing with the rotation.

  8. Rotary magnetic heat pump

    DOE Patents [OSTI]

    Kirol, L.D.

    1987-02-11T23:59:59.000Z

    A rotary magnetic heat pump constructed without flow seals or segmented rotor accomplishes recuperation and regeneration by using split flow paths. Heat exchange fluid pumped through heat exchangers and returned to the heat pump splits into two flow components: one flowing counter to the rotor rotation and one flowing with the rotation. 5 figs.

  9. Rotary shaft sealing assembly

    DOE Patents [OSTI]

    Dietle, Lannie L. (Houston, TX); Schroeder, John E. (Richmond, TX); Kalsi, Manmohan S. (Houston, TX); Alvarez, Patricio D. (Richmond, TX)

    2010-09-21T23:59:59.000Z

    A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

  10. Rotary shaft sealing assembly

    DOE Patents [OSTI]

    Dietle, Lannie L; Schroeder, John E; Kalsi, Manmohan S; Alvarez, Patricio D

    2013-08-13T23:59:59.000Z

    A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

  11. Rotary pneumatic valve

    DOE Patents [OSTI]

    Hardee, Harry C. (Albuquerque, NM)

    1991-01-01T23:59:59.000Z

    A rotary pneumatic valve which is thrust balanced and the pneumatic pressure developed produces only radial loads on the valve cylinder producing negligible resistance and thus minimal torque on the bearings of the valve. The valve is multiplexed such that at least two complete switching cycles occur for each revolution of the cylinder spindle.

  12. Rotary Firing in Ring-Shaped Protein Explains Unidirectionality

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing in Ring-ShapedRotaryRotary

  13. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    Renewable Energy Laboratory’s Hybrid Optimization Model forRenewable Energy Laboratory’s (NREL) Hybrid Optimization

  14. Recirculating rotary gas compressor

    DOE Patents [OSTI]

    Weinbrecht, J.F.

    1992-02-25T23:59:59.000Z

    A positive displacement, recirculating Roots-type rotary gas compressor is described which operates on the basis of flow work compression. The compressor includes a pair of large diameter recirculation conduits which return compressed discharge gas to the compressor housing, where it is mixed with low pressure inlet gas, thereby minimizing adiabatic heating of the gas. The compressor includes a pair of involutely lobed impellers and an associated port configuration which together result in uninterrupted flow of recirculation gas. The large diameter recirculation conduits equalize gas flow velocities within the compressor and minimize gas flow losses. The compressor is particularly suited to applications requiring sustained operation at higher gas compression ratios than have previously been feasible with rotary pumps, and is particularly applicable to refrigeration or other applications requiring condensation of a vapor. 12 figs.

  15. Recirculating rotary gas compressor

    DOE Patents [OSTI]

    Weinbrecht, John F. (601 Oakwood Loop, NE., Albuquerque, NM 87123)

    1992-01-01T23:59:59.000Z

    A positive displacement, recirculating Roots-type rotary gas compressor which operates on the basis of flow work compression. The compressor includes a pair of large diameter recirculation conduits (24 and 26) which return compressed discharge gas to the compressor housing (14), where it is mixed with low pressure inlet gas, thereby minimizing adiabatic heating of the gas. The compressor includes a pair of involutely lobed impellers (10 and 12) and an associated port configuration which together result in uninterrupted flow of recirculation gas. The large diameter recirculation conduits equalize gas flow velocities within the compressor and minimize gas flow losses. The compressor is particularly suited to applications requiring sustained operation at higher gas compression ratios than have previously been feasible with rotary pumps, and is particularly applicable to refrigeration or other applications requiring condensation of a vapor.

  16. Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks

    E-Print Network [OSTI]

    Fisher, Kathleen

    Optimal Energy-Bandwidth Allocation for Energy Harvesting Interference Networks Zhe Wang, Vaneet@research.att.com Abstract--We develop optimal energy-bandwidth allocation algorithm for the energy harvesting transmitters in interference networks. We assume that both the channel gain and the harvested energy are known for K slots

  17. DOE ZERH Webinar: Building Energy Optimization Tool (BEopt) Training...

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

    DOE ZERH Webinar: Building Energy Optimization Tool (BEopt) Training DOE ZERH Webinar: Building Energy Optimization Tool (BEopt) Training The National Renewable Energy Laboratory...

  18. Energy Harvesting Communication Networks: Optimization and Demonstration

    E-Print Network [OSTI]

    Gesbert, David

    ) and the UK (Imperial College London). Index Terms--energy harvesting; energy packet net- works; Markov models harvesting devices. EH capability can scavenge ambient energy, such as vibrations, thermal gradients or solar1 Energy Harvesting Communication Networks: Optimization and Demonstration (The E-CROPS Project

  19. Plant Energy Cost Optimization Program (PECOP)

    E-Print Network [OSTI]

    Robinson, A. M.

    1980-01-01T23:59:59.000Z

    The Plant Energy Cost Optimization Program (PECOP) is a Management System designed to reduce operating cost in a continuous operating multi product plant by reviewing all cost factors and selecting plant wide production schedules which are most...

  20. Scalable Stochastic Optimization of Complex Energy Systems

    E-Print Network [OSTI]

    Miles Lubin

    2011-04-18T23:59:59.000Z

    Apr 18, 2011 ... Scalable Stochastic Optimization of Complex Energy Systems ... PIPS is applied to a stochastic economic dispatch problem that uses ... Performance Computing, Networking, Storage and Analysis (SC11), November 2011.

  1. Rotary internal combustion engine

    SciTech Connect (OSTI)

    Crittenden, W.

    1987-01-27T23:59:59.000Z

    This patent describes an improved rotary internal combustion engine comprising: (a) a combustion chamber which is generally circular in cross-section and which has a ring-like peripheral wall; (b) a driven shaft member journaled for rotation and disposed to pass eccentrically through the combustion chamber; (c) a compression chamber which is generally circular in cross-section positioned with a ring-like wall is adjacent to and spatially offset with the combustion chamber such that the driven shaft passes centrally therethrough; and (d) a circular combustion rotor fixed concentrically to the shaft member for rotation eccentrically within the combustion chamber. The combustion rotor is positioned such that the space between the periphery of the rotor and the periphery of the combustion chamber results in a crescent shape.

  2. Analysis of the Energy-Saving Potential of a Three-Rotary Wheel Fresh Air-Handling Unit

    E-Print Network [OSTI]

    Hao, X.; Zhang, G.; Zou, S.; Liu, H.

    2006-01-01T23:59:59.000Z

    , TRWFAHU can save 10.2% of primary energy and greatly decrease the energy consumption of chiller. If waste heat is available for regenerating the desiccant, the system can achieve greater energy savings. It is feasible to improve indoor air quality (IAQ...

  3. Enhancing Compiler Techniques for Memory Energy Optimizations

    E-Print Network [OSTI]

    Kuzmanovic, Aleksandar

    in the total energy consumption equation. 1 Introduction As the market for embedded systems continues to grow for Memory Energy Optimizations 365 tend to increase code size. This increased code size is an important. An increase in instruction memory size, in turn, increases both per access dynamic energy consumption and leak

  4. Automating Energy Optimization with Features Norbert Siegmund

    E-Print Network [OSTI]

    Apel, Sven

    is considered more important than an optimal performance. Moreover, due to increas- ing energy costs, energy power supply [37]. It is expected that energy cost of servers will soon ex- ceed the purchase cost hardware devices and operating systems often increases development time and cost. Business constraints

  5. Optimal Scheduling for Energy Harvesting Transmitters with Hybrid Energy Storage

    E-Print Network [OSTI]

    Ulukus, Sennur

    Optimal Scheduling for Energy Harvesting Transmitters with Hybrid Energy Storage Omur Ozel Khurram with an energy harvesting transmitter which has a hybrid energy storage unit composed of a perfectly efficient super-capacitor (SC) and an inefficient battery. The SC has finite space for energy storage while

  6. Nuclear Energy Density Optimization: UNEDF2

    E-Print Network [OSTI]

    M. Kortelainen; J. McDonnell; W. Nazarewicz; E. Olsen; P. -G. Reinhard; J. Sarich; N. Schunck; S. M. Wild; D. Davesne; J. Erler; A. Pastore

    2014-10-30T23:59:59.000Z

    The parameters of the UNEDF2 nuclear energy density functional (EDF) model were obtained in an optimization to experimental data consisting of nuclear binding energies, proton radii, odd-even mass staggering data, fission-isomer excitation energies, and single particle energies. In addition to parameter optimization, sensitivity analysis was done to obtain parameter uncertainties and correlations. The resulting UNEDF2 is an all-around EDF. However, the sensitivity analysis also demonstrated that the limits of current Skyrme-like EDFs have been reached and that novel approaches are called for.

  7. Coal desulfurization in a rotary kiln combustor

    SciTech Connect (OSTI)

    Cobb, J.T. Jr.

    1990-08-15T23:59:59.000Z

    BCR National Laboratory (BCRNL) has initiated a project aimed at evaluating the technical and economic feasibility of using a rotary kiln, suitably modified, to burn Pennsylvania anthracite wastes, co-fired with high-sulfur bituminous coal. Limestone will be injected into the kiln for sulfur control, to determine whether high sulfur capture levels can be achieved with high sorbent utilization. The principal objectives of this work are: (1) to prove the feasibility of burning anthracite refuse, with co-firing of high-sulfur bituminous coal and with limestone injection for sulfur emissions control, in a rotary kiln fitted with a Universal Energy International (UEI) air injector system; (2) to determine the emissions levels of SO{sub x} and NO{sub x} and specifically to identify the Ca/S ratios that are required to meet New Source Performance Standards; (3) to evaluate the technical and economic merits of a commercial rotary kiln combustor in comparison to fluidized bed combustors; and, (4) to ascertain the need for further work, including additional combustion tests, prior to commercial application, and to recommend accordingly a detailed program towards this end.

  8. Best compression: Reciprocating or rotary?

    SciTech Connect (OSTI)

    Cahill, C.

    1997-07-01T23:59:59.000Z

    A compressor is a device used to increase the pressure of a compressible fluid. The inlet pressure can vary from a deep vacuum to a high positive pressure. The discharge pressure can range from subatmospheric levels to tens of thousands of pounds per square inch. Compressors come in numerous forms, but for oilfield applications there are two primary types, reciprocating and rotary. Both reciprocating and rotary compressors are grouped in the intermittent mode of compression. Intermittent is cyclic in nature, in that a specific quantity of gas is ingested by the compressor, acted upon and discharged before the cycle is repeated. Reciprocating compression is the most common form of compression used for oilfield applications. Rotary screw compressors have a long history but are relative newcomers to oilfield applications. The rotary screw compressor-technically a helical rotor compressor-dates back to 1878. That was when the first rotary screw was manufactured for the purpose of compressing air. Today thousands of rotary screw compression packages are being used throughout the world to compress natural gas.

  9. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    Hybrid Optimization Model for Electric Renewables heating, ventilation, and air conditioning integrated energy system

  10. Rotary kiln seal

    DOE Patents [OSTI]

    Drexler, Robert L. (Idaho Falls, ID)

    1992-01-01T23:59:59.000Z

    A rotary seal used to prevent the escape of contaminates from a rotating kiln incinerator. The rotating seal combines a rotating disc plate which is attached to the rotating kiln shell and four sets of non-rotating carbon seal bars housed in a primary and secondary housing and which rub on the sides of the disc. A seal air system is used to create a positive pressure in a chamber between the primary and secondary seals to create a positive air flow into the contaminated gas chamber. The seal air system also employs an air inlet located between the secondary and tertiary seals to further insure that no contaminates pass the seal and enter the external environment and to provide makeup air for the air which flows into the contaminated gas chamber. The pressure exerted by the seal bars on the rotating disc is controlled by means of a preload spring. The seal is capable of operating in a thermally changing environment where the both radial expansion and axial movement of the rotating kiln do not result in the failure of the seal.

  11. Rotary Firing in Ring-Shaped Protein Explains Unidirectionality

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing in Ring-ShapedRotary Firing

  12. Rotary Firing in Ring-Shaped Protein Explains Unidirectionality

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing in Ring-ShapedRotary

  13. Rotary Firing in Ring-Shaped Protein Explains Unidirectionality

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing inRotary Firing in

  14. Optimizing Manufactured Housing Energy Use

    E-Print Network [OSTI]

    McGinley, W. M.; Jones, A.; Turner, C.; Chandra, S.; Beal, D.; Parker, D. S.; Moyer, N.; McIlvaine, J.

    2004-01-01T23:59:59.000Z

    In partnership with the Florida Solar Energy Center (FSEC), two manufactured homes were located on North Carolina A&T State University's campus in Greensboro, NC and used in a side-by-side energy consumption comparison. One of the homes was built...

  15. Cooling Tower Energy Conservation Optimization

    E-Print Network [OSTI]

    Burger, R.

    Energy conservation strategies involve more than examination of fan horsepower. Colder water and pumping head provide vast savings potentials. What is dollar value of 1°F in your process? What is dollar cost of pumping water to distribution system...

  16. Optimizing New Dark Energy Experiments

    SciTech Connect (OSTI)

    Tyson, J. Anthony [University of California, Davis

    2013-08-26T23:59:59.000Z

    Next generation “Stage IV” dark energy experiments under design during this grant, and now under construction, will enable the determination of the properties of dark energy and dark matter to unprecedented precision using multiple complementary probes. The most pressing challenge in these experiments is the characterization and understanding of the systematic errors present within any given experimental configuration and the resulting impact on the accuracy of our constraints on dark energy physics. The DETF and the P5 panel in their reports recommended “Expanded support for ancillary measurements required for the long-term program and for projects that will improve our understanding and reduction of the dominant systematic measurement errors.” Looking forward to the next generation Stage IV experiments we have developed a program to address the most important potential systematic errors within these experiments. Using data from current facilities it has been feasible and timely to undertake a detailed investigation of the systematic errors. In this DOE grant we studied of the source and impact of the dominant systematic effects in dark energy measurements, and developed new analysis tools and techniques to minimize their impact. Progress under this grant is briefly reviewed in this technical report. This work was a necessary precursor to the coming generations of wide-deep probes of the nature of dark energy and dark matter. The research has already had an impact on improving the efficiencies of all Stage III and IV dark energy experiments.

  17. Energy Optimizers USA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazel Crest,EnergySerranopolis Jump to:EconCompaniesMain Page JumpEnergy

  18. Sandia Energy - Wind Plant Optimization

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home DistributionTransportation Safety HomeWater PowerEnergy Staff HomeWind

  19. Pump Systems Optimization: Energy Efficiency

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 |ofDepartment ofPart| Department ofPump Systems

  20. DOE Announces Webinars on Building Energy Optimization Tool Training...

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

    previously aired videos, slides, and transcripts. May 15: Live Webinar on Building Energy Optimization Tool Training Webinar Sponsor: DOE Zero Energy Ready Home The Energy...

  1. Energy Optimization of Bioethanol Production via Hydrolysis of Switchgrass

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    1 Energy Optimization of Bioethanol Production via Hydrolysis of Switchgrass Mariano Martín Abstract. In this work, we propose the optimal flowsheet for the production of bioethanol from switchgrass, Bioethanol, Mathematical optimization, Hydrolysis, Switchgrass

  2. Optim Energy Marketing LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: EnergyExcellenceOfficeOhio:Opower Social Jump to:Open

  3. Optimal Energy Systems | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: EnergyExcellenceOfficeOhio:Opower Social Jump to:OpenOptima

  4. Optimization of the Energy Usage at CERN

    E-Print Network [OSTI]

    Burckhart, H J; Caspers, F; Doré, V; Gatignon, L; Martel, C; Nonis, M; Tommasini, D

    2013-01-01T23:59:59.000Z

    Some of the efforts of CERN to optimize its energy usage are presented. Work is proceeding in several areas: campus and infrastructure, accelerators and beam lines, as well as R&D for future accelerators. The existing building stock is being renovated and new buildings apply an integrated energy concept. The energy efficiency of the accelerators and beam lines can be further enhanced by powering more equipment dynamically only during the time it is really needed. For designing new accelerators novel approaches are being investigated to re-use energy which in today’s installations gets dumped thermally.

  5. Optimization of Energy Harvesting MISO Communication Channels

    E-Print Network [OSTI]

    Gesbert, David

    1 Optimization of Energy Harvesting MISO Communication Channels Rajeev Gangula, Student Member-to-point multiple-input single-output (MISO) communication system is con- sidered when both the transmitter (TX bound on the ergodic rate of MISO channel with beamforming and limited feedback. Feedback bit allocation

  6. Optimal Demand Response with Energy Storage Management

    E-Print Network [OSTI]

    Huang, Longbo; Ramchandran, Kannan

    2012-01-01T23:59:59.000Z

    In this paper, we consider the problem of optimal demand response and energy storage management for a power consuming entity. The entity's objective is to find an optimal control policy for deciding how much load to consume, how much power to purchase from/sell to the power grid, and how to use the finite capacity energy storage device and renewable energy, to minimize his average cost, being the disutility due to load- shedding and cost for purchasing power. Due to the coupling effect of the finite size energy storage, such problems are challenging and are typically tackled using dynamic programming, which is often complex in computation and requires substantial statistical information of the system dynamics. We instead develop a low-complexity algorithm called Demand Response with Energy Storage Management (DR-ESM). DR-ESM does not require any statistical knowledge of the system dynamics, including the renewable energy and the power prices. It only requires the entity to solve a small convex optimization pr...

  7. Optimal Power Allocation for Renewable Energy Source

    E-Print Network [OSTI]

    Sinha, Abhinav

    2011-01-01T23:59:59.000Z

    Battery powered transmitters face energy constraint, replenishing their energy by a renewable energy source (like solar or wind power) can lead to longer lifetime. We consider here the problem of finding the optimal power allocation under random channel conditions for a wireless transmitter, such that rate of information transfer is maximized. Here a rechargeable battery, which is periodically charged by renewable source, is used to power the transmitter. All of above is formulated as a Markov Decision Process. Structural properties like the monotonicity of the optimal value and policy derived in this paper will be of vital importance in understanding the kind of algorithms and approximations needed in real-life scenarios. The effect of curse of dimensionality which is prevalent in Dynamic programming problems can thus be reduced. We show our results under the most general of assumptions.

  8. Optimal Technologies International Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorthOlympia GreenThe community EnergyOptimal Technologies

  9. Optimal and Near-Optimal Energy-Efficient Broadcasting in Wireless Networks

    E-Print Network [OSTI]

    Varvarigo, Emmanouel "Manos"

    Optimal and Near-Optimal Energy-Efficient Broadcasting in Wireless Networks Christos A, 26110 Patras, Greece Abstract. In this paper we propose an energy-efficient broadcast algo- rithm on the multicost approach and selects an optimal energy-efficient set of nodes for broadcasting, tak- ing

  10. High bandwidth rotary fast tool servos and a hybrid rotary/linear electromagnetic actuator

    E-Print Network [OSTI]

    Montesanti, Richard Clement

    2005-01-01T23:59:59.000Z

    This thesis describes the development of two high bandwidth short-stroke rotary fast tool servos and the hybrid rotary/linear electromagnetic actuator developed for one of them. Design insights, trade-off methodologies, ...

  11. Nuclear energy density optimization: Shell structure

    E-Print Network [OSTI]

    M. Kortelainen; J. McDonnell; W. Nazarewicz; E. Olsen; P. -G. Reinhard; J. Sarich; N. Schunck; S. M. Wild; D. Davesne; J. Erler; A. Pastore

    2014-04-28T23:59:59.000Z

    Nuclear density functional theory is the only microscopical theory that can be applied throughout the entire nuclear landscape. Its key ingredient is the energy density functional. In this work, we propose a new parameterization UNEDF2 of the Skyrme energy density functional. The functional optimization is carried out using the POUNDerS optimization algorithm within the framework of the Skyrme Hartree-Fock-Bogoliubov theory. Compared to the previous parameterization UNEDF1, restrictions on the tensor term of the energy density have been lifted, yielding a very general form of the energy density functional up to second order in derivatives of the one-body density matrix. In order to impose constraints on all the parameters of the functional, selected data on single-particle splittings in spherical doubly-magic nuclei have been included into the experimental dataset. The agreement with both bulk and spectroscopic nuclear properties achieved by the resulting UNEDF2 parameterization is comparable with UNEDF1. While there is a small improvement on single-particle spectra and binding energies of closed shell nuclei, the reproduction of fission barriers and fission isomer excitation energies has degraded. As compared to previous UNEDF parameterizations, the parameter confidence interval for UNEDF2 is narrower. In particular, our results overlap well with those obtained in previous systematic studies of the spin-orbit and tensor terms. UNEDF2 can be viewed as an all-around Skyrme EDF that performs reasonably well for both global nuclear properties and shell structure. However, after adding new data aiming to better constrain the nuclear functional, its quality has improved only marginally. These results suggest that the standard Skyrme energy density has reached its limits and significant changes to the form of the functional are needed.

  12. Rotary mode system initial instrument calibration

    SciTech Connect (OSTI)

    Johns, B.R.

    1994-10-01T23:59:59.000Z

    The attached report contains the vendor calibration procedures used for the initial instrument calibration of the rotary core sampling equipment. The procedures are from approved vendor information files.

  13. Rotary Firing in Ring-Shaped Protein Explains Unidirectionality

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing in Ring-Shaped

  14. Rotary Firing in Ring-Shaped Protein Explains Unidirectionality

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing in

  15. A Smart Energy System: Distributed Resource Management, Control and Optimization

    E-Print Network [OSTI]

    Beigl, Michael

    A Smart Energy System: Distributed Resource Management, Control and Optimization Yong Ding, Student of distributed energy resource and consumption management, which proposes to design a networked and embedded platform for realizing a dynamic energy mix and optimizing the energy consumption dy- namically. Based

  16. Actes JFPC 2012 Optimal Allocation of Renewable Energy Parks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Actes JFPC 2012 Optimal Allocation of Renewable Energy Parks: A Two-stage Optimization Model-economical study of renewable energy on the other hand, investigates gradual implantation of Renewable Energy (RE of energy demand, available resources, anticipated renewable engineering cost re- ductions [13]. However

  17. Cache Energy Optimization Techniques For Modern Processors

    SciTech Connect (OSTI)

    Mittal, Sparsh [ORNL] ORNL

    2013-01-01T23:59:59.000Z

    Modern multicore processors are employing large last-level caches, for example Intel's E7-8800 processor uses 24MB L3 cache. Further, with each CMOS technology generation, leakage energy has been dramatically increasing and hence, leakage energy is expected to become a major source of energy dissipation, especially in last-level caches (LLCs). The conventional schemes of cache energy saving either aim at saving dynamic energy or are based on properties specific to first-level caches, and thus these schemes have limited utility for last-level caches. Further, several other techniques require offline profiling or per-application tuning and hence are not suitable for product systems. In this book, we present novel cache leakage energy saving schemes for single-core and multicore systems; desktop, QoS, real-time and server systems. Also, we present cache energy saving techniques for caches designed with both conventional SRAM devices and emerging non-volatile devices such as STT-RAM (spin-torque transfer RAM). We present software-controlled, hardware-assisted techniques which use dynamic cache reconfiguration to configure the cache to the most energy efficient configuration while keeping the performance loss bounded. To profile and test a large number of potential configurations, we utilize low-overhead, micro-architecture components, which can be easily integrated into modern processor chips. We adopt a system-wide approach to save energy to ensure that cache reconfiguration does not increase energy consumption of other components of the processor. We have compared our techniques with state-of-the-art techniques and have found that our techniques outperform them in terms of energy efficiency and other relevant metrics. The techniques presented in this book have important applications in improving energy-efficiency of higher-end embedded, desktop, QoS, real-time, server processors and multitasking systems. This book is intended to be a valuable guide for both newcomers and veterans in the field of cache power management. It will help graduate students, CAD tool developers and designers in understanding the need of energy efficiency in modern computing systems. Further, it will be useful for researchers in gaining insights into algorithms and techniques for micro-architectural and system-level energy optimization using dynamic cache reconfiguration. We sincerely believe that the ``food for thought'' presented in this book will inspire the readers to develop even better ideas for designing ``green'' processors of tomorrow.

  18. Valuation of Energy Storage: An Optimal Switching Rene Carmona

    E-Print Network [OSTI]

    Carmona, Rene

    Valuation of Energy Storage: An Optimal Switching Approach Ren´e Carmona Department of Operations://www.pstat.ucsb.edu/faculty/ludkovski We consider the valuation of energy storage facilities within the framework of stochastic control;Carmona and Ludkovski: Optimal Switching for Energy Storage 2 in the commodity financial markets. Storage

  19. Optimal Energy Storage Control Policies for the Smart Power Grid

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    Optimal Energy Storage Control Policies for the Smart Power Grid Iordanis Koutsopoulos Vassiliki Center for Research and Technology Hellas (CERTH), Greece Abstract--Electric energy storage devices the optimal energy storage control problem from the side of the utility operator. The operator controller

  20. Energy and Switch Area Optimizations for FPGA Global Routing Architectures

    E-Print Network [OSTI]

    Fainman, Yeshaiahu

    13 Energy and Switch Area Optimizations for FPGA Global Routing Architectures YI ZHU, YUANFANG HU and wire style optimization, to reduce the energy and switch area of FPGA global routing architectures achieve up to 10% to 15% energy savings and up to 20% switch area savings in average for a set of seven

  1. Finite-Horizon Optimal Transmission Policies for Energy Harvesting Sensors

    E-Print Network [OSTI]

    Jagannathan, Krishna

    Finite-Horizon Optimal Transmission Policies for Energy Harvesting Sensors Rahul Vaze School: krishnaj@ee.iitm.ac.in Abstract--In this paper, we derive optimal transmission poli- cies for energy harvesting sensors to maximize the utility obtained over a finite horizon. First, we consider a single energy

  2. Low Power/Energy Compiler Optimizations Ulrich Kremer

    E-Print Network [OSTI]

    Kremer, Ulrich

    35 Low Power/Energy Compiler Optimizations Ulrich Kremer Department of Computer Science Rutgers, Power/Energy vs. Performance, Summary 35.4 List of Optimizations Dynamic Voltage and Frequency Scaling for compilation and operating strategies to reduce power dissipation and energy usage, at the potential cost

  3. Optimal Energy Allocation and Admission Control for Communications Satellites

    E-Print Network [OSTI]

    Modiano, Eytan

    Initiative. input and output of energy relatively static, such a satellite may not require a sophisticated1 Optimal Energy Allocation and Admission Control for Communications Satellites Alvin Fu, Eytan Modiano, and John Tsitsiklis Abstract--We address the issue of optimal energy alloca- tion and admission

  4. Energy Optimization in Wireless Medical Systems Using Physiological Behavior

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    Energy Optimization in Wireless Medical Systems Using Physiological Behavior Hyduke Noshadi, Foad pressure sen- sors placed in each shoe, which cover the bottom of the entire foot, resulting in energy, Algorithm, Performance Keywords Wearable Medical Systems, Energy Optimization, Sensor Se- Permission to make

  5. Optimization of Energy and Water Consumption in Cornbased Ethanol Plants

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    1 Optimization of Energy and Water Consumption in Corn­based Ethanol Plants Elvis Ahmetovi). First, we review the major alternatives in the optimization of energy consumption and its impact for the water streams. We show that minimizing energy consumption leads to process water networks with minimum

  6. The global optimization of Morse clusters by potential energy ...

    E-Print Network [OSTI]

    Jon P. K. Doye

    2003-07-15T23:59:59.000Z

    Jul 15, 2003 ... The global optimization of Morse clusters by potential energy transformations. Jon P. K. Doye (jpkd1 ***at*** cam.ac.uk) Robert H. Leary (leary ...

  7. Central Networks Low Carbon Hub Optimizing renewable energy resources...

    Open Energy Info (EERE)

    (Smart Grid Project) Jump to: navigation, search Project Name Central Networks Low Carbon Hub Optimizing renewable energy resources in Lincolnshire Country United Kingdom...

  8. National Renewable Energy Laboratory (NREL) researchers enhanced this building energy optimization tool to analyze

    E-Print Network [OSTI]

    National Renewable Energy Laboratory (NREL) researchers enhanced this building energy optimization levels at the lowest possible cost. A new version of NREL's Building Energy Optimization (BEopt) software targeting zero net energy--the new version identifies cost- optimal residential building designs at various

  9. Renewable Energy Planning: Multiparametric Cost Optimization; Preprint

    SciTech Connect (OSTI)

    Walker, A.

    2008-05-01T23:59:59.000Z

    This paper describes a method for determining the combination of renewable energy technologies that minimize life-cycle cost at a facility, often with a specified goal regarding percent of energy use from renewable sources. Technologies include: photovoltaics (PV); wind; solar thermal heat and electric; solar ventilation air preheating; solar water heating; biomass heat and electric (combustion, gasification, pyrolysis, anaerobic digestion); and daylighting. The method rests upon the National Renewable Energy Laboratory's (NREL's) capabilities in characterization of technology cost and performance, geographic information systems (GIS) resource assessment, and life-cycle cost analysis. The paper discusses how to account for the way candidate technologies interact with each other, and the solver routine used to determine the combination that minimizes life-cycle cost. Results include optimal sizes of each technology, initial cost, operating cost, and life-cycle cost, including incentives from utilities or governments. Results inform early planning to identify and prioritize projects at a site for subsequent engineering and economic feasibility study.

  10. Control and Optimization Meet the Smart Power Grid: Scheduling of Power Demands for Optimal Energy

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    Control and Optimization Meet the Smart Power Grid: Scheduling of Power Demands for Optimal Energy technologies to enforce sensible use of energy through effective demand load management. We envision a scenario con- sumer power demand requests with different power require- ments, durations, and deadlines

  11. Optimal mixing and optimal stirring for fixed energy, fixed power or fixed palenstrophy flows

    E-Print Network [OSTI]

    Novikov, Alexei

    Optimal mixing and optimal stirring for fixed energy, fixed power or fixed palenstrophy flows-time perfect mixing with a finite energy constraint on the stirring flow. On the other hand, using techniques, University of Michigan, Ann Arbor, MI 48109 (Dated: 31 March 2012) We consider passive scalar mixing

  12. Floating seal system for rotary devices

    DOE Patents [OSTI]

    Banasiuk, H.A.

    1983-08-23T23:59:59.000Z

    This invention relates to a floating seal system for rotary devices to reduce gas leakage around the rotary device in a duct and across the face of the rotary device to an adjacent duct. The peripheral seal bodies are made of resilient material having a generally U-shaped cross section wherein one of the legs is secured to a support member and the other of the legs forms a contacting seal against the rotary device. The legs of the peripheral seal form an extended angle of intersection of about 10[degree] to about 30[degree] in the unloaded condition to provide even sealing forces around the periphery of the rotary device. The peripheral seal extends around the periphery of the support member except where intersected by radial seals which reduce gas leakage across the face of the rotary device and between adjacent duct portions. The radial seal assembly is fabricated from channel bars, the smaller channel bar being secured to the divider of the support member and a larger inverted rigid floating channel bar having its legs freely movable over the legs of the smaller channel bar forming therewith a tubular channel. A resilient flexible tube is positioned within the tubular channel for substantially its full length to reduce gas leakage across the tubular channel. A spacer extends beyond the face of the floating channel near each end of the floating channel a distance to provide desired clearance between the floating channel and the face of the rotary device. 5 figs.

  13. Optimal Green Energy Utilization in MIMO Systems with Hybrid Energy Supplies

    E-Print Network [OSTI]

    1 Optimal Green Energy Utilization in MIMO Systems with Hybrid Energy Supplies Congshi Hu, Jie Gong, it is feasible for BSs to be powered by green energy, such as solar energy and wind energy. For instance

  14. Predictive control and thermal energy storage for optimizing a multi-energy district boiler

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Predictive control and thermal energy storage for optimizing a multi- energy district boiler Julien energy storage. 1. Introduction Managing energy demand, promoting renewable energy and finding ways of the OptiEnR research project, the present paper deals with optimizing the multi-energy district boiler

  15. Under consideration for publication in J. Fluid Mech. 1 Wake of a cylinder performing rotary

    E-Print Network [OSTI]

    Godoy-Diana, Ramiro

    on the mean flow and the global drag applied on the cylinder. We then discuss the mechanism responsible cylinder, the effect of "in-line" oscillations on wake structure and hydrodynamic forces have been that the rotary oscillation of the cylinder could, for optimal parameters, achieve a significant drag reduction

  16. Robust Energy Cost Optimization of Water Distribution System with ...

    E-Print Network [OSTI]

    2011-02-21T23:59:59.000Z

    Energy cost optimization of a water-supply network is a very important practical .... nonlinear equations for energy conservation. .... [water balance equations] ...... Israel Institute of Technology, Technion, Technion City, Haifa 32000, Israel.

  17. Energy Optimization of Bioethanol Production via Gasification of Switchgrass

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    1 Energy Optimization of Bioethanol Production via Gasification of Switchgrass Mariano Martín Abstract. In this paper, we address the conceptual design of the bioethanol process from switchgrass via of $0.41/gal Keywords: Energy; Biofuels; Bioethanol; Process synthesis

  18. Continuously Optimized Reliable Energy (CORE) Microgrid: Models & Tools (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-07-01T23:59:59.000Z

    This brochure describes Continuously Optimized Reliable Energy (CORE), a trademarked process NREL employs to produce conceptual microgrid designs. This systems-based process enables designs to be optimized for economic value, energy surety, and sustainability. Capabilities NREL offers in support of microgrid design are explained.

  19. Optimal Power Cost Management Using Stored Energy in Data Centers

    E-Print Network [OSTI]

    Giles, C. Lee

    Optimal Power Cost Management Using Stored Energy in Data Centers Rahul Urgaonkar, Bhuvan Urgaonkar of uninterrupted power supply (UPS) units as energy storage devices. This rep- resents a deviation from the usual average electric utility bill in a data center. Us- ing the technique of Lyapunov optimization, we develop

  20. Mapping the Energy Landscape of Non-Convex Optimization Problems

    E-Print Network [OSTI]

    Zhu, Song Chun

    Mapping the Energy Landscape of Non-Convex Optimization Problems Maira Pavlovskaia1 , Kewei Tu2@shanghaitech.edu.cn Abstract. An energy landscape map (ELM) characterizes and visualizes an energy function with a tree the barrier between adjacent energy basins. We demonstrate the utility of ELMs in analyzing non-convex energy

  1. Maximizing Thermal Efficiency and Optimizing Energy Management (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-03-01T23:59:59.000Z

    Researchers at the Thermal Test Facility (TTF) on the campus of the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in Golden, Colorado, are addressing maximizing thermal efficiency and optimizing energy management through analysis of efficient heating, ventilating, and air conditioning (HVAC) strategies, automated home energy management (AHEM), and energy storage systems.

  2. Enclosed rotary disc air pulser

    DOE Patents [OSTI]

    Olson, A. L. (Idaho Falls, ID); Batcheller, Tom A. (Idaho Falls, ID); Rindfleisch, J. A. (Arco, ID); Morgan, John M. (Arco, ID)

    1989-01-01T23:59:59.000Z

    An enclosed rotary disc air pulser for use with a solvent extraction pulse olumn includes a housing having inlet, exhaust and pulse leg ports, a shaft mounted in the housing and adapted for axial rotation therein, first and second disc members secured to the shaft within the housing in spaced relation to each other to define a chamber therebetween, the chamber being in communication with the pulse leg port, the first disc member located adjacent the inlet port, the second disc member being located adjacent the exhaust port, each disc member having a milled out portion, the disc members positioned on the shaft so that as the shaft rotates, the milled out portions permit alternative cyclical communication between the inlet port and the chamber and the exhaust port and the chamber.

  3. Method for Determining Optimal Residential Energy Efficiency Retrofit Packages

    SciTech Connect (OSTI)

    Polly, B.; Gestwick, M.; Bianchi, M.; Anderson, R.; Horowitz, S.; Christensen, C.; Judkoff, R.

    2011-04-01T23:59:59.000Z

    Businesses, government agencies, consumers, policy makers, and utilities currently have limited access to occupant-, building-, and location-specific recommendations for optimal energy retrofit packages, as defined by estimated costs and energy savings. This report describes an analysis method for determining optimal residential energy efficiency retrofit packages and, as an illustrative example, applies the analysis method to a 1960s-era home in eight U.S. cities covering a range of International Energy Conservation Code (IECC) climate regions. The method uses an optimization scheme that considers average energy use (determined from building energy simulations) and equivalent annual cost to recommend optimal retrofit packages specific to the building, occupants, and location. Energy savings and incremental costs are calculated relative to a minimum upgrade reference scenario, which accounts for efficiency upgrades that would occur in the absence of a retrofit because of equipment wear-out and replacement with current minimum standards.

  4. Rotary adsorbers for continuous bulk separations

    DOE Patents [OSTI]

    Baker, Frederick S. (Oak Ridge, TN)

    2011-11-08T23:59:59.000Z

    A rotary adsorber for continuous bulk separations is disclosed. The rotary adsorber includes an adsorption zone in fluid communication with an influent adsorption fluid stream, and a desorption zone in fluid communication with a desorption fluid stream. The fluid streams may be gas streams or liquid streams. The rotary adsorber includes one or more adsorption blocks including adsorbent structure(s). The adsorbent structure adsorbs the target species that is to be separated from the influent fluid stream. The apparatus includes a rotary wheel for moving each adsorption block through the adsorption zone and the desorption zone. A desorption circuit passes an electrical current through the adsorbent structure in the desorption zone to desorb the species from the adsorbent structure. The adsorbent structure may include porous activated carbon fibers aligned with their longitudinal axis essentially parallel to the flow direction of the desorption fluid stream. The adsorbent structure may be an inherently electrically-conductive honeycomb structure.

  5. HypoEnergy: Hybrid supercapacitor-battery power-supply optimization for Energy efficiency

    E-Print Network [OSTI]

    HypoEnergy: Hybrid supercapacitor-battery power-supply optimization for Energy efficiency Azalia the hybrid battery-supercapacitor power supply life- time. HypoEnergy combines high energy density and supercapacitors' charging overhead. HypoEnergy-KI studies the hybrid supply lifetime optimization

  6. Energy Optimal Transmission Scheduling in Wireless Sensor Networks

    E-Print Network [OSTI]

    Koksal, Can Emre

    1 Energy Optimal Transmission Scheduling in Wireless Sensor Networks Rahul Srivastava, Student networks is energy efficient communication of time-critical data. Energy wastage can be caused by failed. INTRODUCTION Energy efficient communication is one of the key concerns in the design of wireless sensor

  7. Energy-Efficient Capacity Optimization in Wireless Networks

    E-Print Network [OSTI]

    Wang, Yu

    Energy-Efficient Capacity Optimization in Wireless Networks Lu Liu, Xianghui Cao, Yu Cheng, Lili Du capacity in the most energy-efficient manner over a general large-scale wireless network, say, a multi numerical results demonstrate the energy efficiency improvement by the proposed energy-efficient

  8. Optimal Control of Distributed Energy Resources and Demand Response under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal

    2010-01-01T23:59:59.000Z

    Rio de Janeiro, Brazil Optimal Control of Distributed EnergyRio de Janeiro, Brazil Optimal Control of Distributed EnergyRio de Janeiro, Brazil Optimal Control of Distributed Energy

  9. MULTIPARAMETER OPTIMIZATION STUDIES ON GEOTHERMAL ENERGY CYCLES

    E-Print Network [OSTI]

    Pope, W.L.

    2011-01-01T23:59:59.000Z

    at the Susanville Geothermal Energy Converence, July 1976.and J. W. Tester, Geothermal Energy as a Source of Electricat the Susanville Geothermal Energy Converence, July 1976.

  10. MULTIPARAMETER OPTIMIZATION STUDIES ON GEOTHERMAL ENERGY CYCLES

    E-Print Network [OSTI]

    Pope, W.L.

    2011-01-01T23:59:59.000Z

    and J. W. Tester, Geothermal Energy as a Source of Electricat the Susanville Geothermal Energy Converence, July 1976.for Recovery of Energy from Geothermal Hot Brine Deposits."

  11. Rotary Firing in Ring-Shaped Protein Explains Unidirectionality

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements RecentlyElectronicResources ResourcesRobust,Roman SeawaterEnergyRotary

  12. Rotary Firing in Ring-Shaped Protein Explains Unidirectionality

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing in Ring-Shaped Protein

  13. Optimal Power Policy for Energy Harvesting Transmitters with Inefficient Energy Storage

    E-Print Network [OSTI]

    Yener, Aylin

    1 Optimal Power Policy for Energy Harvesting Transmitters with Inefficient Energy Storage Kaya with an inefficient energy storage device, i.e., battery or capacitor, is considered, where a fraction of the stored for optimal power allocations with energy harvesting transmitters, it is observed that storage losses

  14. Optimizing Feedback in Energy Harvesting MISO Communication Channels

    E-Print Network [OSTI]

    Gesbert, David

    Optimizing Feedback in Energy Harvesting MISO Communication Channels Rajeev Gangula1 , David.gunduz@imperial.ac.uk Abstract--In this work,1 we consider the optimization of feedback in a point-to-point MISO channel in the context of a simple multiple antenna system, namely MISO channel, where feedback can be used to improve

  15. Coal desulfurization in a rotary kiln combustor. Final report, March 15, 1990--July 31, 1991

    SciTech Connect (OSTI)

    Cobb, J.T. Jr.

    1992-09-11T23:59:59.000Z

    The purpose of this project was to demonstrate the combustion of coal and coal wastes in a rotary kiln reactor with limestone addition for sulfur control. The rationale for the project was the perception that rotary systems could bring several advantages to combustion of these fuels, and may thus offer an alternative to fluid-bed boilers. Towards this end, an existing wood pyrolysis kiln (the Humphrey Charcoal kiln) was to be suitably refurbished and retrofitted with a specially designed version of a patented air distributor provided by Universal Energy, Inc. (UEI). As the project progressed beyond the initial stages, a number of issues were raised regarding the feasibility and the possible advantages of burning coals in a rotary kiln combustor and, in particular, the suitability of the Humphrey Charcoal kiln as a combustor. Instead, an opportunity arose to conduct combustion tests in the PEDCO Rotary Cascading-Bed Boiler (RCBB) commercial demonstration unit at the North American Rayon CO. (NARCO) in Elizabethton, TN. The tests focused on anthracite culm and had two objectives: (a) determine the feasibility of burning anthracite culms in a rotary kiln boiler and (b) obtain input for any further work involving the Humphrey Charcoal kiln combustor. A number of tests were conducted at the PEDCO unit. The last one was conducted on anthracite culm procured directly from the feed bin of a commercial circulating fluid-bed boiler. The results were disappointing; it was difficult to maintain sustained combustion even when large quantities of supplemental fuel were used. Combustion efficiency was poor, around 60 percent. The results suggest that the rotary kiln boiler, as designed, is ill-suited with respect to low-grade, hard to burn solid fuels, such as anthracite culm. Indeed, data from combustion of bituminous coal in the PEDCO unit suggest that with respect to coal in general, the rotary kiln boiler appears inferior to the circulating fluid bed boiler.

  16. Optimization of time-based rates in forward energy markets

    E-Print Network [OSTI]

    Wang, J.

    This paper presents a new two-step design approach of Time-Based Rate (TBR) programs for markets with a high penetration of variable energy sources such as wind power. First, an optimal market time horizon must be determined ...

  17. Online Modeling in the Process Industry for Energy Optimization

    E-Print Network [OSTI]

    Alexander, J.

    "This paper discusses how steady state models are being used in the process industry to perform online energy optimization of steam and electrical systems. It presents process demands commonly found in the processing industry in terms of steam...

  18. REopt: A Platform for Energy System Integration and Optimization: Preprint

    SciTech Connect (OSTI)

    Simpkins, T.; Cutler, D.; Anderson, K.; Olis, D.; Elgqvist, E.; Callahan, M.; Walker, A.

    2014-08-01T23:59:59.000Z

    REopt is NREL's energy planning platform offering concurrent, multi-technology integration and optimization capabilities to help clients meet their cost savings and energy performance goals. The REopt platform provides techno-economic decision-support analysis throughout the energy planning process, from agency-level screening and macro planning to project development to energy asset operation. REopt employs an integrated approach to optimizing a site?s energy costs by considering electricity and thermal consumption, resource availability, complex tariff structures including time-of-use, demand and sell-back rates, incentives, net-metering, and interconnection limits. Formulated as a mixed integer linear program, REopt recommends an optimally-sized mix of conventional and renewable energy, and energy storage technologies; estimates the net present value associated with implementing those technologies; and provides the cost-optimal dispatch strategy for operating them at maximum economic efficiency. The REopt platform can be customized to address a variety of energy optimization scenarios including policy, microgrid, and operational energy applications. This paper presents the REopt techno-economic model along with two examples of recently completed analysis projects.

  19. Energy-Optimized Lossless Compression: Rate-Variability Tradeoff

    E-Print Network [OSTI]

    Wu, Yihong

    is larger in this case. This motivates the problem of designing efficient compressors to minimize total Alto, CA 94304 Email: marcelo.weinberger@hp.com Abstract--We pose the problem of energy energy consumption. Such energy-optimized compressors could prove useful for embedded systems

  20. Optimizing Ballast Design of Wave Energy Converters Using Evolutionary Algorithms

    E-Print Network [OSTI]

    Tumer, Kagan

    Optimizing Ballast Design of Wave Energy Converters Using Evolutionary Algorithms Mitch Colby, 97331 kagan.tumer@oregonstate.edu ABSTRACT Wave energy converters promise to be a viable alternative the ballast geometry of a wave energy genera- tor using a two step process. First, we generate a function

  1. Optimal Energy Management Strategy including Battery Health through Thermal

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Optimal Energy Management Strategy including Battery Health through Thermal Management for Hybrid: Energy management strategy, Plug-in hybrid electric vehicles, Li-ion battery aging, thermal management, Pontryagin's Minimum Principle. 1. INTRODUCTION The interest for energy management strategy (EMS) of Hybrid

  2. Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization

    E-Print Network [OSTI]

    Poovendran, Radha

    energy consumption while limiting the latency in data transfer. In this paper, we focus on pollingMinimizing Energy Consumption in Body Sensor Networks via Convex Optimization Sidharth Nabar energy consumption and latency. We show that this problem can be posed as a geometric program, which

  3. Circuit Area Optimization in Energy Temporal Sparse Scenarios for

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Circuit Area Optimization in Energy Temporal Sparse Scenarios for Multiple Harvester Powered.alarcon@upc.edu Abstract--Multi-source energy harvesters are gaining interest as a robust alternative to power wireless sensors, since the sensor node can maintain its operation regardless of the fact that one of its energy

  4. Speculative Software Management of Datapath-width for Energy Optimization

    E-Print Network [OSTI]

    Seznec, André

    Speculative Software Management of Datapath-width for Energy Optimization Gilles Pokam gpokam accommodate the execution of a program on a narrower datapath-width in or- der to save energy the width of the register file to be dynamically recon- figured, providing both static and dynamic energy

  5. Optimal Control of Residential Energy Storage Under Price Fluctuations

    E-Print Network [OSTI]

    Optimal Control of Residential Energy Storage Under Price Fluctuations Peter van de ven Department.hegde,laurent.massoulie,theodoros.salonidis}@technicolor.com Abstract--An increasing number of retail energy markets exhibit price fluctuations and provide home users the oppor- tunity to buy energy at lower than average prices. However, such cost savings are hard to realize

  6. GLOBAL OPTIMIZATION AND ANALYSIS FOR THE GIBBS FREE ENERGY FUNCTION

    E-Print Network [OSTI]

    Neumaier, Arnold

    GLOBAL OPTIMIZATION AND ANALYSIS FOR THE GIBBS FREE ENERGY FUNCTION USING THE UNIFAC, WILSON equilibrium involves two important problems: (i) the minimization of the Gibbs free energy, and (ii of the Gibbs free energy. However, a drawback of all previous approaches is that they could not provide

  7. Hybrid Heuristics for Optimizing Energy Consumption in Embedded Systems

    E-Print Network [OSTI]

    Schott, René - Institut de Mathématiques �lie Cartan, Université Henri Poincaré

    Hybrid Heuristics for Optimizing Energy Consumption in Embedded Systems Maha IDRISSI AOUAD1 , Ren energy reduction becomes crucial for many embed- ded systems designers. In this paper, we propose Hybrid to BEH). Keywords: Energy consumption reduction, Genetic algorithms, hybrid heuristics, memory allocation

  8. Optimal Power Cost Management Using Stored Energy in Data Centers

    E-Print Network [OSTI]

    Urgaonkar, Bhuvan

    the aver- age price of 1 MW-Hour of electricity. Consequently, mini- mization of energy consumption needOptimal Power Cost Management Using Stored Energy in Data Centers Rahul Urgaonkar, Bhuvan Urgaonkar that arise by the use of uninterrupted power supply (UPS) units as energy storage devices. This rep- resents

  9. Optimizing Communication Energy Consumption in Perpetual Wireless Nanosensor Networks

    E-Print Network [OSTI]

    Weigle, Michele

    Optimizing Communication Energy Consumption in Perpetual Wireless Nanosensor Networks Shahram}@cs.odu.edu Abstract--This paper investigates the effect of various param- eters of energy consumption. Finding the optimum combination of parameters to minimize energy consumption while satisfying the Qo

  10. Realistic Industrial Scale Energy Optimization: Part I - Organizing and Executing Energy Conservation Projects

    E-Print Network [OSTI]

    Jones, W. T.

    1982-01-01T23:59:59.000Z

    With increased cost and reduced availability of energy, plant managers are reviewing their options to optimize energy utilization to reduce operating costs. This paper deals with the organization and execution of an energy conservation program which...

  11. Intelligent Building Energy Information and Control Systems for Low-Energy Operations and Optimal Demand Response

    E-Print Network [OSTI]

    Piette, Mary Ann

    2014-01-01T23:59:59.000Z

    Systems for  Energy Management and Demand Response in 7.  Linking energy efficiency and demand response.   In for Low-Energy Operations and Optimal Demand Response Mary

  12. Rotary-linear axes for high speed machining

    E-Print Network [OSTI]

    Liebman, Michael Kevin, 1974-

    2001-01-01T23:59:59.000Z

    This thesis presents the design, analysis, fabrication, and control of a rotary-linear axis; this axis is a key subsystem for high speed, 5-axis machine tools intended for fabricating centimeter-scale parts. The rotary-linear ...

  13. Optimization of energy parameters in buildings

    E-Print Network [OSTI]

    Jain, Ruchi V

    2007-01-01T23:59:59.000Z

    When designing buildings, energy analysis is typically done after construction has been completed, but making the design decisions while keeping energy efficiency in mind, is one way to make energy-efficient buildings. The ...

  14. MULTIPARAMETER OPTIMIZATION STUDIES ON GEOTHERMAL ENERGY CYCLES

    E-Print Network [OSTI]

    Pope, W.L.

    2011-01-01T23:59:59.000Z

    and J. W. Tester, Geothermal Energy as a Source of Electricat the Susanville Geothermal Energy Converence, July 1976.and J. W. Tester, Geothermal Energy as a Source of Electric

  15. Optimal Energy Savings in Cellular Access Networks

    E-Print Network [OSTI]

    , for a holistic approach to energy efficient networking. In this paper we tackle the issue of energy-aware manage customer premises networking equipment. This situation, coupled with increasing energy costs, has generated

  16. Building Energy Optimization Tool (BEopt) Training

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

    Tool (BEopt) 2 | INNOVATION & INTEGRATION: Transforming the Energy Efficiency Market Buildings.Energy.gov The Home of the Future....Today 3 | INNOVATION & INTEGRATION:...

  17. Efficient energy transfer in light-harvesting systems, I: optimal temperature, reorganization energy, and spatial-

    E-Print Network [OSTI]

    Cao, Jianshu

    Efficient energy transfer in light-harvesting systems, I: optimal temperature, reorganization of efficient and robust energy transfer in light-harvesting systems provides new insights for the optimal the efficiency and maintain its stability. With the Haken-Strobl model, the maximal energy transfer efficiency

  18. Optimizing Process Loads in Industrial Cogeneration Energy Systems

    E-Print Network [OSTI]

    Ahner, D. J.; Babson, P. E.

    processes. AUTOMATION REQUIREMENTS The Operations energy Management System (OEMS) can require on-line operation using current measurements (e.g. flow, powers, temperatures, etc.), and calculating optimum energy purchase and equipment dispatch within...kW., A.. kW >- kW OPTIMIZING PROCESS LOADS IN INDUSTRIAL COGENERAnON ENERGY SYSTEMS DJ. Ahner Manager, Generation Technology Power Tecbnologies, Inc. Schenectady, New York ABSTRACT Optimum dispatcb of energy supply systems can...

  19. Methods and apparatus for controlling rotary machines

    DOE Patents [OSTI]

    Bagepalli, Bharat Sampathkumaran (Niskayuna, NY); Jansen, Patrick Lee (Scotia, NY); Barnes, Gary R. (Delanson, NY); Fric, Thomas Frank (Greer, SC); Lyons, James Patrick Francis (Niskayuna, NY); Pierce, Kirk Gee (Simpsonville, SC); Holley, William Edwin (Greer, SC); Barbu, Corneliu (Guilderland, NY)

    2009-09-01T23:59:59.000Z

    A control system for a rotary machine is provided. The rotary machine has at least one rotating member and at least one substantially stationary member positioned such that a clearance gap is defined between a portion of the rotating member and a portion of the substantially stationary member. The control system includes at least one clearance gap dimension measurement apparatus and at least one clearance gap adjustment assembly. The adjustment assembly is coupled in electronic data communication with the measurement apparatus. The control system is configured to process a clearance gap dimension signal and modulate the clearance gap dimension.

  20. MULTIPARAMETER OPTIMIZATION STUDIES ON GEOTHERMAL ENERGY CYCLES

    E-Print Network [OSTI]

    Pope, W.L.

    2011-01-01T23:59:59.000Z

    Energy Conversion Study for EPRI." The Ben Holt Company andPower Research Institute (EPRI) and ERDA-DGE, respectively,

  1. Stochastic Optimization in Energy ISO New England

    E-Print Network [OSTI]

    Powell, Warren B.

    Oct Nov Dec #12;Slide 9 Energy from wind 30 days Wind from all PJM wind farms #12;Solar energy;Solar from PSE&G solar farms Solar from a single solar farm Solar energy from a single solar farm showing significant variations due to clouds. Slide 12 #12;Solar from PSE&G solar farms Solar from all

  2. Valuation of Energy Storage: An Optimal Switching Mike Ludkovski

    E-Print Network [OSTI]

    Ludkovski, Mike

    Valuation of Energy Storage: An Optimal Switching Approach Mike Ludkovski Department of Mathematics University, Princeton, NJ 08544 rcarmona@princeton.edu, We consider the valuation of energy storage facilities within the framework of stochastic control. Our two main examples are natural gas dome storage

  3. Application Level Optimizations for Energy Efficiency and Thermal Stability

    E-Print Network [OSTI]

    Coskun, Ayse

    -efficiency, and (ii) the effect of temperature optimization on system-level energy consumption. 1. INTRODUCTION Recent]. A closely related issue is ther- mal management: High power consumption not only increases opera- tional challenges--Performance, Energy, and Temperature (PET)--solely through novel hardware design. We know

  4. PET: Reducing Database Energy Cost via Query Optimization

    E-Print Network [OSTI]

    Tu, Yicheng

    PET: Reducing Database Energy Cost via Query Optimization Zichen Xu The Ohio State University xuz@ece.osu.edu Yi-Cheng Tu The University of South Florida ytu@cse.usf.edu Xiaorui Wang The Ohio State University xwang@ece.osu.edu ABSTRACT Energy conservation is a growing important issue in designing mod- ern

  5. Energy Optimal Routing in Radio Networks Using Geometric Data Structures ?

    E-Print Network [OSTI]

    Schmitt, Peter H.

    batteries or power from solar panels, a prime optimization criterion is the energy consumption. We model the transmission cost be­ tween two sites is the square of their Euclidean distance plus a constant offset. We give C u +juvj 2 . The cost offset C u accounts for distance independent energy consumption like

  6. Metallurgical Characterization of Controlled Memory Wire Nickel-Titanium Rotary Instruments

    E-Print Network [OSTI]

    Zheng, Yufeng

    Metallurgical Characterization of Controlled Memory Wire Nickel-Titanium Rotary Instruments Ya Shen Haapasalo, DDS, PhD* Abstract Introduction: To improve the fracture resistance of nickel-titanium (Ni- tron microscopy with x-ray energy-dispersive spectro- metric (EDS) analyses. Results: The DSC analyses

  7. Annual Energy Consumption Analysis and Energy Optimization of a Solar-Assisted Heating Swimming Pool 

    E-Print Network [OSTI]

    Zuo, Z.; Hu, W.; Meng, O.

    2006-01-01T23:59:59.000Z

    This paper is concerned with the energy efficiency calculations and optimization for an indoor solar-assisted heating swimming pool in GuangZhou. The heating energy requirements for maintaining the pool constant temperature were investigated, which...

  8. Annual Energy Consumption Analysis and Energy Optimization of a Solar-Assisted Heating Swimming Pool

    E-Print Network [OSTI]

    Zuo, Z.; Hu, W.; Meng, O.

    2006-01-01T23:59:59.000Z

    This paper is concerned with the energy efficiency calculations and optimization for an indoor solar-assisted heating swimming pool in GuangZhou. The heating energy requirements for maintaining the pool constant temperature were investigated, which...

  9. Reverse Osmosis Optimization | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy at Waste-to-Energy usingofRetrofitting Doors on OpenRevenue FromReverse

  10. Plant Optimization Technologies | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCO Overview OCHCO OCHCOControlGuide to aEnergyPlanning andof

  11. Biotrans: Cost Optimization Model | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia: EnergyAvignon,Belcher HomesLyons

  12. Building Energy Optimization (BEopt) Software | Department of...

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

    costs in year from 0-2,500 on the vertical axis. The horizontal axis displays energy savings in % from 0-100. There's a curved line representing cash flow with four points...

  13. Optimize Parallel Pumping Systems | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment ofOil'sEnergy

  14. Sandia Energy - Optimizing Engines for Alternative Fuels

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiationImplementing Nonlinear757Kelley RuehlReport Postednanorod light

  15. DEVELOPMENT OF A ROTARY MICROFILTER FOR RADIOACTIVE WASTE APPLICATIONS

    SciTech Connect (OSTI)

    Poirier, M; David Herman, D; Samuel Fink, S

    2008-02-25T23:59:59.000Z

    The processing rate of Savannah River Site (SRS) high-level waste decontamination processes are limited by the flow rate of the solid-liquid separation. The baseline process, using a 0.1 micron cross-flow filter, produces {approx}0.02 gpm/sq. ft. of filtrate under expected operating conditions. Savannah River National Laboratory (SRNL) demonstrated significantly higher filter flux for actual waste samples using a small-scale rotary filter. With funding from the U. S. Department of Energy Office of Cleanup Technology, SRNL personnel are evaluating and developing the rotary microfilter for radioactive service at SRS. The authors improved the design for the disks and filter unit to make them suitable for high-level radioactive service. They procured two units using the new design, tested them with simulated SRS wastes, and evaluated the operation of the units. Work to date provides the following conclusions and program status: (1) The authors modified the design of the filter disks to remove epoxy and Ryton{reg_sign}. The new design includes welding both stainless steel and ceramic coated stainless steel filter media to a stainless steel support plate. The welded disks were tested in the full-scale unit. They showed good reliability and met filtrate quality requirements. (2) The authors modified the design of the unit, making installation and removal easier. The new design uses a modular, one-piece filter stack that is removed simply by disassembly of a flange on the upper (inlet) side of the filter housing. All seals and rotary unions are contained within the removable stack. (3) While it is extremely difficult to predict the life of the seal, the vendor representative indicates a minimum of one year in present service conditions is reasonable. Changing the seal face material from silicon-carbide to a graphite-impregnated silicon-carbide is expected to double the life of the seal. Replacement of the current seal with an air seal could increase the lifetime to 5 years and is undergoing testing in the current work. (4) The bottom bushing showed wear due to a misalignment during the manufacture of the filter tank. Replacing the graphite bushing with a more wear resistant material such as a carbide material will increase the lifetime of the bushing. This replacement requires a more wear resistant part or coating to prevent excessive wear of the shaft. The authors are currently conducting testing with the more wear resistant bushing. (5) The project team plans to use the rotary microfilter as a filter in advance of an ion exchange process under development for potential deployment in SRS waste tank risers.

  16. Optimization of Industrial Enzymes - Energy Innovation Portal

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomass and Biofuels Biomass and Biofuels Find More Like This Return

  17. Diss. ETH No. 21036 Optimal Energy Management

    E-Print Network [OSTI]

    Lygeros, John

    Federal Office of Energy and Siemens Schweiz AG for the co-funding of my project. I am further indebted for their support and helpful discussions, namely Ivan L¨otscher, Markus Gwerder and Bruno Illi of Siemens Building and operating constraints are transformed into mixed-integer linear in- equalities to integrate them

  18. Energy optimization of Hydrogen production from biomass

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    production cost 0.67 $/kg. Keywords: Energy, Biofuels, Alternative fuels, Fuel cells, Water of the fabric that covered the airship. In 1950's the first practical fuel cell was presented by Francis T. Bacon. Current developments on fuel cell technology for both stationary generation of electricity

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

    E-Print Network [OSTI]

    Ghaffari, Azad

    2013-01-01T23:59:59.000Z

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

  20. Best Practice for Energy Efficient Cleanrooms: Cooling tower and condenser water optimization

    E-Print Network [OSTI]

    Xu, Tengfang

    2005-01-01T23:59:59.000Z

    for Energy Efficient Cleanrooms: Cooling Tower and Condenserfor Energy Efficient Cleanrooms: Cooling tower and condensertower and condenser water optimization Summary Cleanroom energy

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

    E-Print Network [OSTI]

    Paderborn, Universität

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

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

    E-Print Network [OSTI]

    Paderborn, Universität

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

  3. OpenEI:Projects/Search Engine Optimization | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I Geothermal Pwer PlantMunhall,Missouri: EnergyExcellenceOfficeOhio: EnergyProjects/Search Engine Optimization

  4. Cooling Tower Considerations for Energy Optimizations

    E-Print Network [OSTI]

    Burger, R.

    1986-01-01T23:59:59.000Z

    accumulat- ing in the strainers and tubes. The California Redwood Institute states that the service life of thin section Redwood used in cooling towers .is a'pproximately 15 to 20 years. Therefore, in these older-type towers the fill Is usually... of the art cellular film fill packing. Figure 6. Eight cell blow-thru tower where rebuilding lowered the water temperature 4OF greatly reducing compressor head pressures and temperatures thereby lowering energy consumption throughout the system...

  5. Optimal Privacy-Preserving Energy Management for Smart Meters

    E-Print Network [OSTI]

    Reisslein, Martin

    Optimal Privacy-Preserving Energy Management for Smart Meters Lei Yang, Xu Chen, Junshan Zhang Abstract--Smart meters, designed for information collection and system monitoring in smart grid, report a tradeoff between the smart meter data privacy and the electricity bill. In general, a major challenge

  6. Optimizing potential energy functions for maximal intrinsic hyperpolarizability

    SciTech Connect (OSTI)

    Zhou Juefei; Szafruga, Urszula B.; Kuzyk, Mark G. [Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814 (United States); Watkins, David S. [Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164-2814 (United States); Department of Mathematics, Washington State University, Pullman, Washington 99164-3113 (United States)

    2007-11-15T23:59:59.000Z

    We use numerical optimization to study the properties of (1) the class of one-dimensional potential energy functions and (2) systems of point nuclei in two dimensions that yield the largest intrinsic hyperpolarizabilities, which we find to be within 30% of the fundamental limit. In all cases, we use a one-electron model. It is found that a broad range of optimized potentials, each of very different character, yield the same intrinsic hyperpolarizability ceiling of 0.709. Furthermore, all optimized potential energy functions share common features such as (1) the value of the normalized transition dipole moment to the dominant state, which forces the hyperpolarizability to be dominated by only two excited states and (2) the energy ratio between the two dominant states. All optimized potentials are found to obey the three-level ansatz to within about 1%. Many of these potential energy functions may be implementable in multiple quantum well structures. The subset of potentials with undulations reaffirm that modulation of conjugation may be an approach for making better organic molecules, though there appear to be many others. Additionally, our results suggest that one-dimensional molecules may have larger diagonal intrinsic hyperpolarizability {beta}{sub xxx}{sup int} than higher-dimensional systems.

  7. BACKPRESSURE TESTING OF ROTARY MICROFILTER DISKS

    SciTech Connect (OSTI)

    Fowley, M.; Herman, D.

    2011-04-14T23:59:59.000Z

    The Savannah River National Laboratory (SRNL), under the Department of Energy (DOE) Office of Environmental Management (EM), is modifying and testing the SpinTek{trademark} rotary microfilter (RMF) for radioactive filtration service in the Department of Energy (DOE) complex. The RMF has been shown to improve filtration throughput when compared to other conventional methods such as cross-flow filtration. A concern with the RMF was that backpressure, or reverse flow through the disk, would damage the filter membranes. Reverse flow might happen as a result of an inadvertent valve alignment during flushing. Testing was completed in the Engineering Development Laboratory (EDL) located in SRNL to study the physical effects of backpressure as well as to determine the maximum allowable back-pressure for RMF disks. The RMF disks tested at the EDL were manufactured by SpinTek{trademark} Filtration and used a Pall Corporation PMM050 filter membrane (0.5 micron nominal pore size) made from 316L stainless steel. Early versions of the RMF disks were made from synthetic materials that were incompatible with caustic solutions and radioactive service as well as being susceptible to delaminating when subjected to backpressure. Figure 1-1 shows the essential components of the RMF; 3 rotating disks and 3 stationary turbulence promoters (or shear elements) are shown. Figure 1-2 show the assembly view of a 25 disk RMF proposed for use at the Savannah River Site (SRS) and at the Hanford Facility. The purpose of the testing discussed in this report was to determine the allowable backpressure for RMF disks as well as study the physical effects of backpressure on RMF disks made with the Pall PMM050 membrane. This was accomplished by pressurizing the disks in the reverse flow direction (backpressure) until the test limit was reached or until membrane failure occurred. Backpressure was applied to the disks with air while submerged in deionized (DI) water. This method provided a visual representation of membrane integrity via bubble flow patterns. Membrane failure was defined as the inability to filter effectively at the nominal filter pore size. Effective filtration was determined by turbidity measurements of filtrate that was produced by applying forward-pressure to the disks while submerged in a representative simulant. The representative simulant was Tank 8F simulated sludge produced for SRNL by Optima Chemical. Two disks were tested. Disk 1 was tested primarily to determine approximate levels of backpressure where membrane failure occurred. These levels were then used to define the strategy for testing the Disk 2; a strategy that would better define and quantify the mode of failure.

  8. Data Center Optimization Plan | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy, OAPMMilestone | DepartmentEA

  9. E85 Optimized Engine | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E TDrew Bittner About UsDurable,Presentation from the

  10. E85 Optimized Engine | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E TDrew Bittner About UsDurable,Presentation from the2009

  11. Stochastic Modeling and Optimization for Energy Management in Multi-Core Systems

    E-Print Network [OSTI]

    Tasiran, Serdar

    1 Stochastic Modeling and Optimization for Energy Management in Multi-Core Systems: A Video and optimization framework which leads to effective energy management policies. At the heart of this framework lie to obtain optimal energy management policies. These policies minimize the average energy consumption using

  12. Energy efficiency improvement and cost saving opportunities for the Corn Wet Milling Industry: An ENERGY STAR Guide for Energy and Plant Managers

    E-Print Network [OSTI]

    Galitsky, Christina; Worrell, Ernst; Ruth, Michael

    2003-01-01T23:59:59.000Z

    Programme. (1997). Good Practice Guide 149: Rotary Drying inProgramme. (1998). Good Practice Guide 249: Energy Savings

  13. Optimization and integration of renewable energy sources on a community scale using Artificial Neural Networks and Genetic Algorithms

    E-Print Network [OSTI]

    Davis, Bron

    2011-01-01T23:59:59.000Z

    building design optimization." Building and Environment (programming model for optimization of the electrical energySimulated Evolutionary Optimization." IEEE TRANSACTIONS ON

  14. Rotary Vapor Compression Cycle Technology: A Pathway to Ultra...

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

    Cycle Technology: A Pathway to Ultra-Efficient Air Conditioning, Heating and Refrigeration Rotary Vapor Compression Cycle Technology: A Pathway to Ultra-Efficient Air...

  15. Emissions and Energy: An Integral Approach Using an Online Energy Management and Optimization Model

    E-Print Network [OSTI]

    Ruiz, D.; Ruiz, C.; Santollani, O.; Reitmeier, T.

    2010-01-01T23:59:59.000Z

    examples and results corresponding to the application of such systems to refineries will be discussed. In addition, the integration of CO2 emission costs and constraints into the online energy system models and their optimization is also explained....

  16. HAWAII NATURAL ENERGY INSTITUTEE CS 2004 Meeting www.hnei.hawaii.edu Optimization ofOptimization of

    E-Print Network [OSTI]

    HAWAII NATURAL ENERGY INSTITUTEE CS 2004 Meeting www.hnei.hawaii.edu Optimization ofOptimization manufacture #12;HAWAII NATURAL ENERGY INSTITUTEwww.hnei.hawaii.edu 5 E CS 2004 Meeting The HybridThe Hybrid of HybridHybrid PhotoelectrodePhotoelectrode forfor Solar WaterSolar Water--SplittingSplitting Bjorn Marsen

  17. Improving ac motor efficiency with fuzzy logic energy optimizer

    SciTech Connect (OSTI)

    Spiegel, R.J.; Chappell, P.J.; Cleland, J.G.

    1994-08-01T23:59:59.000Z

    The paper discusses EPA's research program to develop fuzzy-logic-based energy optimizers for alternating-current (AC) induction motors driven by Adjustable Speed Drives (ASDs). The technical goals of the program are to increase the efficiency of ASD/motor combinations (especially when operating at off-rated torque/speed conditions), develop a generic controller for energy optimization that can be applied to a wide range of motors and ASDs regardless of size and application, and develop a controller for energy optimization that can eliminate the requirement for tachometer or encoder feedback, and still maintain the stability and response of closed-loop control. Electric motors use over 60% of the electrical power generated in the U.S. The U.S. population of approximately 1 billion motors use over 1700 billion kWh per year. Over 140 million new motors are sold each year. A review of the U.S. motor population reveals that 90% of the motors are less than 1 hp (fractional motors) in size, but use less than 10% of the electricity consumed by motors. More that 80% of the electricity used by motors is consumed by less than 1% of the motor population (motors greater than 20 hp). Thus, it is clear that large energy savings from improvement in motor efficiency could be achieved from a relatively small motor population.

  18. Optimal Control of Distributed Energy Resources using Model Predictive Control

    SciTech Connect (OSTI)

    Mayhorn, Ebony T.; Kalsi, Karanjit; Elizondo, Marcelo A.; Zhang, Wei; Lu, Shuai; Samaan, Nader A.; Butler-Purry, Karen

    2012-07-22T23:59:59.000Z

    In an isolated power system (rural microgrid), Distributed Energy Resources (DERs) such as renewable energy resources (wind, solar), energy storage and demand response can be used to complement fossil fueled generators. The uncertainty and variability due to high penetration of wind makes reliable system operations and controls challenging. In this paper, an optimal control strategy is proposed to coordinate energy storage and diesel generators to maximize wind penetration while maintaining system economics and normal operation. The problem is formulated as a multi-objective optimization problem with the goals of minimizing fuel costs and changes in power output of diesel generators, minimizing costs associated with low battery life of energy storage and maintaining system frequency at the nominal operating value. Two control modes are considered for controlling the energy storage to compensate either net load variability or wind variability. Model predictive control (MPC) is used to solve the aforementioned problem and the performance is compared to an open-loop look-ahead dispatch problem. Simulation studies using high and low wind profiles, as well as, different MPC prediction horizons demonstrate the efficacy of the closed-loop MPC in compensating for uncertainties in wind and demand.

  19. Optimizing Architectural and Structural Aspects of Buildings towards Higher Energy Efficiency

    E-Print Network [OSTI]

    Boyer, Edmond

    Optimizing Architectural and Structural Aspects of Buildings towards Higher Energy Efficiency, intelligent building design, energy efficiency, construction costs, multi-objective optimization. 1 for the optimization of buildings, in terms of sustainable development, is the reduction of energy use (while also

  20. Optimization of a hybrid solar energy collector system 

    E-Print Network [OSTI]

    Shinkman, Alan M.

    1981-01-01T23:59:59.000Z

    OPTIMIZATION OF A HYBRID SOLAR ENERGY COLLECTOR SYSTEM A Thesis by ALAN M. SHI NEMAN Submitted to the Graduate College of Texas A&N University in partial fulfillment of the requirement for the degree MASTER OF SCIENCE May 1981 Major Subject... the investment tax credit for farm and ranch operations, 5) establishing a progressive property tax, 6) making certain forms of vertical integration in agriculture a violation of anti-trust laws, 7) prohibiting foreign ownership of farmland, and 8) limiting...

  1. Optimization of a hybrid solar energy collector system

    E-Print Network [OSTI]

    Shinkman, Alan M.

    1981-01-01T23:59:59.000Z

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

  2. The Relationship between Water and Energy: Optimizing Water and Energy 

    E-Print Network [OSTI]

    Finley, T.; Fennessey, K.; Light, R.

    2007-01-01T23:59:59.000Z

    In an effort to conserve water, drought-proof operating plants and control costs, the critical relationship of water and energy is clearly exposed. Five years of effort has transpired into countless studies, more than 100 projects and a clear...

  3. The Relationship between Water and Energy: Optimizing Water and Energy

    E-Print Network [OSTI]

    Finley, T.; Fennessey, K.; Light, R.

    2007-01-01T23:59:59.000Z

    understanding that the highest value opportunities for water conservation usually exist where there is the strongest interaction of water and energy. Steam management systems, process cooling, high quality water production and waste water treatment represent...

  4. Optimized Pump Systems Save Coal Preparation Plant Money and Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment ofOil'sEnergy8 * October 2006 OptimizeINDUSTRIAL

  5. Optimizing Your Motor-Driven System | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment ofOil'sEnergy8 * OctoberDepartmentOPTIMIZING

  6. Renewable Energy Optimization Report for Naval Station Newport

    SciTech Connect (OSTI)

    Robichaud, R.; Mosey, G.; Olis, D.

    2012-02-01T23:59:59.000Z

    In 2008, the U.S. Environmental Protection Agency (EPA) launched the RE-Powering America's Land initiative to encourage the development of renewable energy (RE) on potentially contaminated land and mine sites. As part of this effort, EPA is collaborating with the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) to evaluate RE options at Naval Station (NAVSTA) Newport in Newport, Rhode Island. NREL's Renewable Energy Optimization (REO) tool was utilized to identify RE technologies that present the best opportunity for life-cycle cost-effective implementation while also serving to reduce energy-related carbon dioxide emissions and increase the percentage of RE used at NAVSTA Newport. The technologies included in REO are daylighting, wind, solar ventilation preheating (SVP), solar water heating, photovoltaics (PV), solar thermal (heating and electric), and biomass (gasification and cogeneration). The optimal mix of RE technologies depends on several factors including RE resources; technology cost and performance; state, utility, and federal incentives; and economic parameters (discount and inflation rates). Each of these factors was considered in this analysis. Technologies not included in REO that were investigated separately per NAVSTA Newport request include biofuels from algae, tidal power, and ground source heat pumps (GSHP).

  7. Building Energy Optimization (BEopt) Software | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. Department ofJune 2,The BigSiding RetrofitforCamberlyDepartment BEopt 2.4 Now

  8. BuildingIQ, Inc: Predictive Energy Optimization | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. Department ofJune 2,The BigSidingState and localStudy - PPLBuildingBuildingIQ,

  9. Building Energy Optimization (BEopt) Software | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future ofHydronicBuildingDepartmentDavidDepartment ofAmirBuilding

  10. NREL-Renewable Energy Optimization Presentation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLu anMicrogreenMoonNASA/Ames GlobalViewLCI

  11. NREL-Renewable Energy Optimization Presentation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLu anMicrogreenMoonNASA/Ames GlobalViewLCI(Redirected from

  12. Steam distribution and energy delivery optimization using wireless sensors

    SciTech Connect (OSTI)

    Olama, Mohammed M [ORNL; Allgood, Glenn O [ORNL; Kuruganti, Phani Teja [ORNL; Sukumar, Sreenivas R [ORNL; Djouadi, Seddik M [ORNL; Lake, Joe E [ORNL

    2011-01-01T23:59:59.000Z

    The Extreme Measurement Communications Center at Oak Ridge National Laboratory (ORNL) explores the deployment of a wireless sensor system with a real-time measurement-based energy efficiency optimization framework in the ORNL campus. With particular focus on the 12-mile long steam distribution network in our campus, we propose an integrated system-level approach to optimize the energy delivery within the steam distribution system. We address the goal of achieving significant energy-saving in steam lines by monitoring and acting on leaking steam valves/traps. Our approach leverages an integrated wireless sensor and real-time monitoring capabilities. We make assessments on the real-time status of the distribution system by mounting acoustic sensors on the steam pipes/traps/valves and observe the state measurements of these sensors. Our assessments are based on analysis of the wireless sensor measurements. We describe Fourier-spectrum based algorithms that interpret acoustic vibration sensor data to characterize flows and classify the steam system status. We are able to present the sensor readings, steam flow, steam trap status and the assessed alerts as an interactive overlay within a web-based Google Earth geographic platform that enables decision makers to take remedial action. We believe our demonstration serves as an instantiation of a platform that extends implementation to include newer modalities to manage water flow, sewage and energy consumption.

  13. Predictive energy Optimization: The Next Generation of Energy Management 

    E-Print Network [OSTI]

    Dickinson, P.

    2013-01-01T23:59:59.000Z

    energy management systems. A quantum leap in building intelligence is required to close the gap between the current state of building operations and the needs of smart grids and smart cities. Unfortunately for the building HVAC controls industry... information and other information and make informed decisions. These informed decisions present the quantum leap required to bridge the gap between buildings run on rules of thumb to the smart buildings required by smart grids and smart cities. Figure...

  14. Predictive energy Optimization: The Next Generation of Energy Management

    E-Print Network [OSTI]

    Dickinson, P.

    2013-01-01T23:59:59.000Z

    energy management systems. A quantum leap in building intelligence is required to close the gap between the current state of building operations and the needs of smart grids and smart cities. Unfortunately for the building HVAC controls industry... information and other information and make informed decisions. These informed decisions present the quantum leap required to bridge the gap between buildings run on rules of thumb to the smart buildings required by smart grids and smart cities. Figure...

  15. Optimal allocation of International Atomic Energy Agency inspection resources

    SciTech Connect (OSTI)

    Markin, J.T.

    1987-12-01T23:59:59.000Z

    The Safeguards Department of the International Atomic Energy Agency (IAEA) conducts inspections to assure the peaceful use of a state's nuclear materials and facilities. Because of limited resources for conducting inspections, the careful disposition of inspection effort among these facilities is essential if the IAEA is to attain its safeguards goals. This report describes an optimization procedure for assigning an inspection effort to maximize attainment of IAEA goals. The procedure does not require quantitative estimates of safeguards effectiveness, material value, or facility importance. Instead, the optimization is based on qualitative, relative prioritizations of inspection activities and materials to be safeguarded. This allocation framework is applicable to an arbitrary group of facilities such as a state's fuel cycle, the facilities inspected by an operations division, or all of the facilities inspected by the IAEA.

  16. DOE Zero Energy Ready Home Webinar: Building Energy Optimization (BEopt)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube| Department ofDepartment of EnergyCustom Home|PV-ReadySoftware | Department

  17. Sandia Energy - Current Energy Converter Array Optimization Framework

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand RequirementsCoatings Initiated at PNNL's SequimReactors To Receive UpinCumminsCurrent

  18. Optimizing the Energy Delivery via V2G Systems based on Stochastic Inventory Theory

    E-Print Network [OSTI]

    Zhuang, Weihua

    1 Optimizing the Energy Delivery via V2G Systems based on Stochastic Inventory Theory Hao Liang, Fellow, IEEE Abstract--In this paper, we study the optimal energy delivery problem from viewpoints formulate the optimization problem based on a general plug- in hybrid electric vehicle (PHEV) model, taking

  19. Rotary sequencing valve with flexible port plate

    DOE Patents [OSTI]

    Wagner, Glenn Paul

    2005-05-10T23:59:59.000Z

    Rotary sequencing valve comprising a rotor having a rotor face rotatable about an axis perpendicular to the rotor face, wherein the rotor face has a plurality of openings, one or more of which are disposed at a selected radial distance from the axis, and wherein the rotor includes at least one passage connecting at least one pair of the plurality of openings. The valve includes a flexible port plate having a first side and a second side, wherein the first side faces the rotor and engages the rotor such that the flexible port plate can be rotated coaxially by the rotor and can move axially with respect to the rotor, wherein the flexible port plate has a plurality of ports between the first and second sides, which ports are aligned with the openings in the rotor face. The valve also includes a stator having a stator face disposed coaxially with the rotor and the flexible port plate, wherein the second side of the flexible port plate is in sealable, slidable rotary contact with the stator face, wherein the stator face has a plurality of openings, some of which are disposed at the selected radial distance from the axis, and wherein the plurality of openings extend as passages through the stator. The valve may be used in pressure or temperature swing adsorption systems.

  20. TESTING OF THE SECOND GENERATION SPINTEK ROTARY FILTER -11357

    SciTech Connect (OSTI)

    Herman, D.; Poirier, M.; Fowley, M.; Keefer, M.; Huff, T.

    2011-02-02T23:59:59.000Z

    The SpinTek rotary microfilter has been developed under the Department of Energy (DOE) Office of Environmental Management (EM) for the purpose of deployment in radioactive service in the DOE complex. The unit that was fabricated and tested is the second generation of the filter that incorporates recommended improvements from previous testing. The completion of this test satisfied a key milestone for the EM technology development program and technology readiness for deployment by Savannah River Remediation in the Small Column Ion Exchange and Sludge Washing processes at the Savannah River Site (SRS). The Savannah River National Laboratory (SRNL) contracted SpinTek Filtration to fabricate a full scale 25 disk rotary filter and perform a 1000 hour endurance test with a simulated SRS sludge. Over 1500 hours of operation have been completed with the filter. SpinTek Filtration fabricated a prototypic 25 disk rotary filter including updates to manufacturing tolerances, an updated design to the rotary joint, improved cooling to the bottom journal, decreases in disk and filter shaft hydraulic resistances. The filter disks were fabricated with 0.5 {micro} pore size, sintered-metal filter media manufactured by Pall Corporation (M050). After fabrication was complete, the filter passed acceptance tests demonstrating rejection of solids and clean water flux with a 50% improvement over the previous filters. Once the acceptance test was complete, a 1000 hour endurance test was initiated simulating a sludge washing process. The test used a simulated SRS Sludge Batch 6 recipe. The insoluble solids started at 5 wt% and were raised to 10 and 15 wt% insoluble solids to simulate the concentration of a large volume tank. The filter system was automated and set up for 24 hour unattended operation. To facilitate this, process control logic was written to operate the filter. During the development it was demonstrated that the method of starting and stopping the filter can affect the build up of filter cake on the disks and therefore the performance of the filter. The filter performed well with the simulant. Very little drop in production was noticed between the 5 and 10 wt% insoluble solids feed. Increasing to 15 wt% had a more pronounced impact due to the rheology of the feed. Acid cleaning was used to clean the filter disks in-situ and restore filtration rate to almost 90% of the initial clean disk rate. Eighty liters of 0.2 M nitric acid in conjunction with water rinses were used to clean the filter in less than 2 hours. Filter testing was completed after 1000 hours of operation were performed on the final filter assembly configuration. The total run time for the testing was over 1500 hours. At the end of the test, the sludge washing was performed successfully from approximately 5.6 M to less than 1 M sodium.

  1. Optimizing the Output of a Human-Powered Energy Harvesting System with Miniaturization and Integrated Control

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    1 Optimizing the Output of a Human-Powered Energy Harvesting System with Miniaturization mechanical energy from human foot-strikes and explore its configuration and control towards optimized energy output. Dielectric Elastomers (DEs) are high-energy density, soft, rubber-like material

  2. Self-Optimization Energy Management Considering Stochastic Influences for a Hybrid

    E-Print Network [OSTI]

    Paderborn, Universität

    Self-Optimization Energy Management Considering Stochastic Influences for a Hybrid Energy Storage--Electric and hybrid-electric vehicles place high de- mands for peak power, energy content and efficiency on the en management, hybrid energy storage system, self-optimization I. INTRODUCTION TODAY'S electric and hybrid

  3. Components for Optimized SCR Systems | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof"Wave the WhiteNational|ofSeptember 3, 2013 Leotek:for Optimized SCR

  4. Weather forecast-based optimization of integrated energy systems.

    SciTech Connect (OSTI)

    Zavala, V. M.; Constantinescu, E. M.; Krause, T.; Anitescu, M.

    2009-03-01T23:59:59.000Z

    In this work, we establish an on-line optimization framework to exploit detailed weather forecast information in the operation of integrated energy systems, such as buildings and photovoltaic/wind hybrid systems. We first discuss how the use of traditional reactive operation strategies that neglect the future evolution of the ambient conditions can translate in high operating costs. To overcome this problem, we propose the use of a supervisory dynamic optimization strategy that can lead to more proactive and cost-effective operations. The strategy is based on the solution of a receding-horizon stochastic dynamic optimization problem. This permits the direct incorporation of economic objectives, statistical forecast information, and operational constraints. To obtain the weather forecast information, we employ a state-of-the-art forecasting model initialized with real meteorological data. The statistical ambient information is obtained from a set of realizations generated by the weather model executed in an operational setting. We present proof-of-concept simulation studies to demonstrate that the proposed framework can lead to significant savings (more than 18% reduction) in operating costs.

  5. Received 7 Dec 2013 | Accepted 11 Feb 2014 | Published 4 Mar 2014 Radial-arrayed rotary electrification for high

    E-Print Network [OSTI]

    Wang, Zhong L.

    (TEG) for producing energy from rotary surfaces with unprece- dented performance. Enabled by a design of two radial-arrayed fine electrodes that are complementary on the same plane, the planar-structured TEG at a rotation rate of 3,000 r minÀ 1, a TEG having a diameter of 10 cm can produce an open-circuit voltage (Voc

  6. Optimal operation and design of solar-thermal energy storage systems

    E-Print Network [OSTI]

    Lizarraga-García, Enrique

    2012-01-01T23:59:59.000Z

    The present thesis focuses on the optimal operation and design of solar-thermal energy storage systems. First, optimization of time-variable operation to maximize revenue through selling and purchasing electricity to/from ...

  7. A comparison of global optimization algorithms with standard benchmark functions and real-world applications using Energy Plus

    E-Print Network [OSTI]

    Kamph, Jerome Henri

    2010-01-01T23:59:59.000Z

    hybrid PSO/HJ, in minimizing standard benchmark functions and real-world building energy optimization

  8. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    the optimization of cogeneration dispatch in a deregulatedcomprised of on-site cogeneration of heat and electricity,of optimal control to a cogeneration system over current,

  9. Optimal Power Control for Energy Harvesting Transmitters in an Interference Channel

    E-Print Network [OSTI]

    Yener, Aylin

    water- filling algorithm. A practical distributed algorithm requiring only local energy harvestingOptimal Power Control for Energy Harvesting Transmitters in an Interference Channel Kaya harvesting transmit- ters and two corresponding receivers are considered. Energy harvesting transmitters have

  10. Demontration of Integrated Optimization Software at the Baldwin Energy Complex

    SciTech Connect (OSTI)

    Rob James; John McDermott; Sanjay Patnaik; Steve Piche`

    2009-01-07T23:59:59.000Z

    This project encompassed the design, development, and demonstration of integrated online optimization systems at Dynegy Midwest Generation's Baldwin Energy Complex (BEC) located in Baldwin, Illinois. The overall project objective was to improve coal-based generation's emission profile, efficiency, maintenance requirements and plant asset life in order to enhance the long-term viability of the United States abundant coal resources. Five separate but integrated optimization products were developed, addressing combustion, sootblowing, SCR operations, overall unit thermal performance, and plant-wide availability optimization. Optimization results are inherently unit-specific and cannot be known for a particular generating unit in advance. However, NeuCo believed that the following were reasonable targets for the completed, integrated set of products: Furnace NOx reduction improvement by 5%, Heat rate improvement by 1.5%, Increase of annual Available MWh by 1.5%, Commensurate reductions in greenhouse gases, mercury, and particulates; and Commensurate increases in profitability from lower costs, improved reliability, and greater commercial availability. The goal during Phase I was to establish each system and demonstrate their integration in unified plant optimization. Efforts during Phase I focused on: (1) developing, deploying, integrating, and testing prototypes for each of the five products; (2) identifying and addressing issues required for the products to integrate with plant operations; and (3) systematically collecting and assimilating feedback to improve subsequent product releases. As described in the Phase II continuation application NeuCo successfully achieved the goal for Phase I. The goal of Phase II was to improve upon the products installed and tested in Phase I and to quantify the benefits of the integrated system. As this report documents, NeuCo has also successfully achieved the goal for Phase II. The overall results of the project, compared with the project goals, are: (1) NOx Reduction: The 5% target for NOx reduction was exceeded with average CEMS and SCR Inlet (furnace) NOx reduction of between 12% and 14%. (2) Heat Rate Improvement: The optimization systems delivered an average heat rate improvement of between 0.67% and 0.7%. This falls short of the 1.5% heat rate improvement target largely because Cyclone Stability (availability) and CEMS and SCR Inlet NOx were prioritized over heat rate in the event they needed to be traded-off with one another. A different prioritization of objectives could have driven a different balance, thereby meeting the target of 1.5% improvement. There were also several factors that could have been masking greater heat rate improvements such as the decrease in fuel density over the course of the project and the impact of actions taken as a result of advice provided by the optimizers that are difficult to quantify. (3) Increased Annual Available MWh: Although difficult to measure precisely, the target of increasing available MWh's by 1.5% was met by providing prioritized alerts and knowledge-based diagnostics for a wide array of plant equipment and process anomalies; helping the plant to move from high sulfur, high Btu Illinois coal to PRB and run that fuel at low stoichiometries without derates; and improved management of cyclone flame quality as well as improved vigilance with respect to cyclone conditions which avoided some degree of temporary de-rate due to cyclone slag build up. (4) Commensurate Reductions in Greenhouse Gases, Mercury, and Particulates: Reductions in all three of these indices can be associated directly with the optimization leverage observed in the heat rate and NOx reductions. (5) Commensurate Increases in Profitability from Lower Costs, Improved Reliability, and Greater Commercial Availability: Commensurate improvements in costs, reliability and availability resulted from the previously described benefits. Also playing a role were the sustained operation of the cyclones while using more available, less expensive but off-design fuel; more effective catal

  11. Rotary fast tool servo system and methods

    DOE Patents [OSTI]

    Montesanti, Richard C. (Cambridge, MA); Trumper, David L. (Plaistow, NH)

    2007-10-02T23:59:59.000Z

    A high bandwidth rotary fast tool servo provides tool motion in a direction nominally parallel to the surface-normal of a workpiece at the point of contact between the cutting tool and workpiece. Three or more flexure blades having all ends fixed are used to form an axis of rotation for a swing arm that carries a cutting tool at a set radius from the axis of rotation. An actuator rotates a swing arm assembly such that a cutting tool is moved in and away from the lathe-mounted, rotating workpiece in a rapid and controlled manner in order to machine the workpiece. A pair of position sensors provides rotation and position information for a swing arm to a control system. A control system commands and coordinates motion of the fast tool servo with the motion of a spindle, rotating table, cross-feed slide, and in-feed slide of a precision lathe.

  12. Rotary seal with improved film distribution

    DOE Patents [OSTI]

    Dietle, Lannie Laroy; Schroeder, John Erick

    2013-10-08T23:59:59.000Z

    The present invention is a generally circular rotary seal that establishes sealing between relatively rotatable machine components for lubricant retention and environmental exclusion, and incorporates seal geometry that interacts with the lubricant during relative rotation to distribute a lubricant film within the dynamic sealing interface. The features of a variable inlet size, a variable dynamic lip flank slope, and a reduction in the magnitude and circumferentially oriented portion of the lubricant side interfacial contact pressure zone at the narrowest part of the lip, individually or in combination thereof, serve to maximize interfacial lubrication in severe operating conditions, and also serve to minimize lubricant shear area, seal torque, seal volume, and wear, while ensuring retrofitability into the seal grooves of existing equipment.

  13. Oneida Tribe of Indians of Wisconsin Energy Optimization Model

    SciTech Connect (OSTI)

    Troge, Michael [Project Manager

    2014-12-30T23:59:59.000Z

    Oneida Nation is located in Northeast Wisconsin. The reservation is approximately 96 square miles (8 miles x 12 miles), or 65,000 acres. The greater Green Bay area is east and adjacent to the reservation. A county line roughly splits the reservation in half; the west half is in Outagamie County and the east half is in Brown County. Land use is predominantly agriculture on the west 2/3 and suburban on the east 1/3 of the reservation. Nearly 5,000 tribally enrolled members live in the reservation with a total population of about 21,000. Tribal ownership is scattered across the reservation and is about 23,000 acres. Currently, the Oneida Tribe of Indians of Wisconsin (OTIW) community members and facilities receive the vast majority of electrical and natural gas services from two of the largest investor-owned utilities in the state, WE Energies and Wisconsin Public Service. All urban and suburban buildings have access to natural gas. About 15% of the population and five Tribal facilities are in rural locations and therefore use propane as a primary heating fuel. Wood and oil are also used as primary or supplemental heat sources for a small percent of the population. Very few renewable energy systems, used to generate electricity and heat, have been installed on the Oneida Reservation. This project was an effort to develop a reasonable renewable energy portfolio that will help Oneida to provide a leadership role in developing a clean energy economy. The Energy Optimization Model (EOM) is an exploration of energy opportunities available to the Tribe and it is intended to provide a decision framework to allow the Tribe to make the wisest choices in energy investment with an organizational desire to establish a renewable portfolio standard (RPS).

  14. Optimal strategies for operating energy storage in an arbitrage Lisa Flatley

    E-Print Network [OSTI]

    Sengun, Mehmet Haluk

    Optimal strategies for operating energy storage in an arbitrage market Lisa Flatley Robert S Mac, energy storage, optimal localized algorithm. AMS subject classifications. 49K30, 93C10 1 Introduction [0, T], for an energy store which is trading in an arbitrage market. Our theory allows for leakage

  15. Modeling Zero Energy Building: technical and economical optimization Maria Ferrara1-2

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Modeling Zero Energy Building: technical and economical optimization Maria Ferrara1-2 , Joseph by the recast of Energy Performance of Buildings. The aim of this work is to provide a useful method to deal combines the use of TRNSYS, building energy simulation program, with GenOpt, Generic Optimization program

  16. Secure Distributed Solution for Optimal Energy Consumption Scheduling in Smart Grid

    E-Print Network [OSTI]

    Shehab, Mohamed

    Secure Distributed Solution for Optimal Energy Consumption Scheduling in Smart Grid Mohammad Emails: {mrahman4, lbai2, mshehab, ealshaer}@uncc.edu Abstract--The demand-side energy management is crucial to optimize the energy usage with its production cost, so that the price paid by the users

  17. Optimization Intensive Energy Harvesting Mahsan Rofouei, Mohammad Ali Ghodrat, Miodrag Potkonjak

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    Optimization Intensive Energy Harvesting Mahsan Rofouei, Mohammad Ali Ghodrat, Miodrag Potkonjak of primary limiting factors of MSs is their energy sensitivity. In order to overcome this limitation, we have developed an optimization intensive approach for energy harvesting. Our goal is to size and position

  18. An Energy Management Controller to Optimally Trade Off Fuel Economy and Drivability for Hybrid Vehicles

    E-Print Network [OSTI]

    Grizzle, Jessy W.

    An Energy Management Controller to Optimally Trade Off Fuel Economy and Drivability for Hybrid Abstract--Hybrid Vehicle fuel economy performance is highly sensitive to the energy management strategy used to regulate power flow among the various energy sources and sinks. Optimal non-causal solutions

  19. EAC: A Compiler Framework for High-Level Energy Estimation and Optimization

    E-Print Network [OSTI]

    Sivasubramaniam, Anand

    University University Park, PA, 16802, USA Abstract This paper presents a novel Energy-Aware Compilation (EAC) framework that can estimate and optimize energy consumption of a given code taking as input the architec on the system power consumption. In order to develop and evaluate new energy-conscious compiler optimizations

  20. Risk-sensitive optimal switching and applications to district energy systems

    E-Print Network [OSTI]

    Glendinning, Paul

    Risk-sensitive optimal switching and applications to district energy systems Jhonny Gonzalez School. Cost optimisation of energy system assets has typically been carried out under the assumption of risk-sensitive control, storage, risk measures, op- timal switching, district energy systems. I. INTRODUCTION The optimal

  1. Energy management of HEV to optimize fuel consumption and pollutant emissions

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    AVEC'12 Energy management of HEV to optimize fuel consumption and pollutant emissions Pierre Michel, several energy management strategies are proposed to optimize jointly the fuel consumption and pollutant-line strategy are given. Keywords: Hybrid Electric Vehicle (HEV), energy management, pollution, fuel consumption

  2. Novel design of a rotary valve using axiomatic design

    E-Print Network [OSTI]

    Peliks, Robert Bilgor

    2005-01-01T23:59:59.000Z

    Rotary valves have existed for millennia; and while they have developed tremendously since the first Roman valves, many of the same problems have persisted. The basic problems are caused by the coupling of functional ...

  3. Evaluation of Alternative Filter Media for the Rotary Microfilter

    SciTech Connect (OSTI)

    Poirier, M. [Savannah River National Laboratory, Environmental and Chemical Process Technology; Herman, [Savannah River National Laboratory, Environmental and Chemical Process Technology; Bhave, Ramesh R [ORNL

    2012-01-01T23:59:59.000Z

    M. R. Poirier , D. T. Herman & R. Bhave (2012) Evaluation of Alternative Filter Media for the Rotary Microfilter, Separation Science and Technology, 47:14-15, 2108-2114

  4. Essays on the Economics of Environmental Issues: The Environmental Kuznets Curve to Optimal Energy Portfolios

    E-Print Network [OSTI]

    Meininger, Aaron G.

    2012-01-01T23:59:59.000Z

    Issues: The Environmental Kuznets Curve to Optimal EnergyE. (2005), “An environmental kuznets curve analysis of u.s.proach to environmental kuznets curves using the ecological

  5. Stochastic Optimization for Collision Selection in High Energy Physics

    E-Print Network [OSTI]

    S. Whiteson; D. Whiteson

    2006-07-10T23:59:59.000Z

    The underlying structure of matter can be deeply probed via precision measurements of the mass of the \\emph{top quark}, the most massive observed fundamental particle. Top quarks can be produced and studied only in collisions at high energy particle accelerators. Most collisions, however, do not produce top quarks; making precise measurements requires culling these collisions into a sample that is rich in collisions producing top quarks (\\emph{signal}) and spare in collisions producing other particles (\\emph{background}). Collision selection is typically performed with heuristics or supervised learning methods. However, such approaches are suboptimal because they assume that the selector with the highest classification accuracy will yield a mass measurement with the smallest statistical uncertainty. In practice, however, the mass measurement is more sensitive to some backgrounds than others. Hence, this paper presents a new approach that uses stochastic optimization techniques to directly search for selectors that minimize statistical uncertainty in the top quark mass measurement. Empirical results confirm that stochastically optimized selectors have much smaller uncertainty. This new approach contributes substantially to our knowledge of the top quark's mass, as the new selectors are currently in use selecting real collisions.

  6. A Composite Energy Function Based Sub-optimal Learning Control Approach for Nonlinear Systems with

    E-Print Network [OSTI]

    Sontag, Eduardo

    A Composite Energy Function Based Sub-optimal Learning Control Approach for Nonlinear Systems with nonlinear sub-optimal control to enhance control performance for a class of nonlinear system with time optimal control [1-4]. However it would be difficult to apply these methods in the presence of system

  7. A Relaxation Strategy for the Optimization of Airborne Wind Energy Sebastien Gros, M. Zanon and Moritz Diehl

    E-Print Network [OSTI]

    A Relaxation Strategy for the Optimization of Airborne Wind Energy Systems S´ebastien Gros, M. Zanon and Moritz Diehl Abstract-- Optimal control is recognized by the Airborne Wind Energy (AWE problem. Keywords : airborne wind energy, optimal control, non- convex optimization, flight control I

  8. Starship Sails Propelled by Cost-Optimized Directed Energy

    E-Print Network [OSTI]

    Benford, James

    2011-01-01T23:59:59.000Z

    Microwave propelled sails are a new class of spacecraft using photon acceleration. It is the only method of interstellar flight that has no physics issues. Laboratory demonstrations of basic features of beam-driven propulsion, flight, stability ('beam-riding'), and induced spin, have been completed in the last decade, primarily in the microwave. It offers much lower cost probes after a substantial investment in the launcher. Engineering issues are being addressed by other applications: fusion (microwave, millimeter and laser sources) and astronomy (large aperture antennas). There are many candidate sail materials: carbon nanotubes and microtrusses, graphene, beryllium, etc. For acceleration of a sail, what is the cost-optimum high power system? Here the cost is used to constrain design parameters to estimate system power, aperture and elements of capital and operating cost. From general relations for cost-optimal transmitter aperture and power, system cost scales with kinetic energy and inversely with sail di...

  9. Optimal energy-preserving conversions of quantum coherence

    E-Print Network [OSTI]

    Yuxiang Yang; Giulio Chiribella

    2015-03-05T23:59:59.000Z

    Quantum mechanics owes its name to the fact that certain physical quantities, like the energy of a hydrogen atom or the spin of an electron, are discrete. But even more distinctive is the existence of coherent superpositions, which provide an invaluable resource for quantum information processing and quantum technologies. The characterization, quantification, and manipulation of this resource are currently the object of intense research and are expected to contribute to the design of new high-performance quantum devices. In this paper we address the search for the best evolution that converts a given quantum superposition of energy eigenstates into another without exchang- ing energy with the surrounding environment. We consider both deterministic and probabilistic evolutions, obtained by measuring the environment and postselecting a subset of the outcomes. In both cases, we characterize the process that maximizes the fidelity with the target superposition. This characterization is used to design a branching sequence of probabilistic filters that increase the probability of success while reaching maximum fidelity at each iteration. We then show that a coherent superposition of different histories generated by such branching allows one to construct efficient approximations of the optimal fidelity-probability tradeoff, via a technique dubbed coherent coarse-graining. The benefits of our construction are illustrated in a number of applications to phase estimation, quantum cloning, coherent state amplification, and ancilla-driven computation.

  10. Proton transport and torque generation in rotary biomotors

    E-Print Network [OSTI]

    A. Yu. Smirnov; S. Savel'ev; L. G. Mourokh; Franco Nori

    2008-05-29T23:59:59.000Z

    We analyze the dynamics of rotary biomotors within a simple nano-electromechanical model, consisting of a stator part and a ring-shaped rotor having twelve proton-binding sites. This model is closely related to the membrane-embedded F$_0$ motor of adenosine triphosphate (ATP) synthase, which converts the energy of the transmembrane electrochemical gradient of protons into mechanical motion of the rotor. It is shown that the Coulomb coupling between the negative charge of the empty rotor site and the positive stator charge, located near the periplasmic proton-conducting channel (proton source), plays a dominant role in the torque-generating process. When approaching the source outlet, the rotor site has a proton energy level higher than the energy level of the site, located near the cytoplasmic channel (proton drain). In the first stage of this torque-generating process, the energy of the electrochemical potential is converted into potential energy of the proton-binding sites on the rotor. Afterwards, the tangential component of the Coulomb force produces a mechanical torque. We demonstrate that, at low temperatures, the loaded motor works in the shuttling regime where the energy of the electrochemical potential is consumed without producing any unidirectional rotation. The motor switches to the torque-generating regime at high temperatures, when the Brownian ratchet mechanism turns on. In the presence of a significant external torque, created by ATP hydrolysis, the system operates as a proton pump, which translocates protons against the transmembrane potential gradient. Here we focus on the F$_0$ motor, even though our analysis is applicable to the bacterial flagellar motor.

  11. Optimal Energy Management of a PHEV Using Trip Information

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

    on Each section - Speed limits Optimal Parameters for Controller Route Estimation Optimization Unit 0 10 20 30 0 20 40 60 Miles mph Road schedule 2012 DOE VT Merit Review -...

  12. Applications of Optimal Building Energy System Selection and Operation

    SciTech Connect (OSTI)

    Marnay, Chris; Stadler, Michael; Siddiqui, Afzal; DeForest, Nicholas; Donadee, Jon; Bhattacharya, Prajesh; Lai, Judy

    2011-04-01T23:59:59.000Z

    Berkeley Lab has been developing the Distributed Energy Resources Customer Adoption Model (DER-CAM) for several years. Given load curves for energy services requirements in a building microgrid (u grid), fuel costs and other economic inputs, and a menu of available technologies, DER-CAM finds the optimum equipment fleet and its optimum operating schedule using a mixed integer linear programming approach. This capability is being applied using a software as a service (SaaS) model. Optimisation problems are set up on a Berkeley Lab server and clients can execute their jobs as needed, typically daily. The evolution of this approach is demonstrated by description of three ongoing projects. The first is a public access web site focused on solar photovoltaic generation and battery viability at large commercial and industrial customer sites. The second is a building CO2 emissions reduction operations problem for a University of California, Davis student dining hall for which potential investments are also considered. And the third, is both a battery selection problem and a rolling operating schedule problem for a large County Jail. Together these examples show that optimization of building u grid design and operation can be effectively achieved using SaaS.

  13. Performance/Energy Optimization of DSP Transforms on the XScale Processor

    E-Print Network [OSTI]

    Franchetti, Franz

    Performance/Energy Optimization of DSP Transforms on the XScale Processor Paolo D'Alberto, Markus P). To do this, we use SPIRAL, a program generation and optimization system for signal processing transforms energy; this is especially important for devices operating on limited power sources such as batteries

  14. Optimization of Parameters in Macromolecular Potential Energy Functions by Conformational Space Annealing

    E-Print Network [OSTI]

    Lee, Jooyoung

    Optimization of Parameters in Macromolecular Potential Energy Functions by Conformational Space´sk, Sobieskiego 18, 80-952 Gdan´sk, Poland ReceiVed: March 22, 2001; In Final Form: June 4, 2001 A general protocol for refining the parameters of macromolecular potential energy functions by optimizing criteria

  15. Calculation of Protein Conformation by Global Optimization of a Potential Energy Function

    E-Print Network [OSTI]

    Lee, Jooyoung

    Calculation of Protein Conformation by Global Optimization of a Potential Energy Function Jooyoung of Gdan´sk, Gdan´sk, Poland 3Cornell Theory Center, Ithaca, New York ABSTRACT A novel hierarchical- vided by CASP3. The approach is based exclusively on the global optimization of a potential energy

  16. A Simple Asymptotically Optimal Joint Energy Allocation and Routing Scheme in Rechargeable

    E-Print Network [OSTI]

    Sinha, Prasun

    1 A Simple Asymptotically Optimal Joint Energy Allocation and Routing Scheme in Rechargeable Sensor problem for a sensor network with energy replenishment. Each sensor node consumes energy in its battery be replenished from renewable energy sources, the energy allocation should be carefully designed in order

  17. Towards Optimal Energy Store-Carry-and-Deliver for PHEVs via V2G System

    E-Print Network [OSTI]

    Zhuang, Weihua

    technology is incorporated to facilitate the energy delivery by providing electricity pricing and energy energy flow, non- stationary energy demand, battery characteristics, and TOU elec- tricity price. WeTowards Optimal Energy Store-Carry-and-Deliver for PHEVs via V2G System Hao Liang, Bong Jun Choi

  18. New Perspectives in Thermoelectric Energy Recovery System Design Optimization

    SciTech Connect (OSTI)

    Hendricks, Terry J.; Karri, Naveen K.; Hogan, Tim; Cauchy, Charles J.

    2013-02-12T23:59:59.000Z

    Abstract: Large amounts of waste heat are generated worldwide in industrial processes, automotive transportation, diesel engine exhaust, military generators, and incinerators because 60-70% of the fuel energy is typically lost in these processes. There is a strong need to develop technologies that recover this waste heat to increase fuel efficiency and minimize fuel requirements in these industrial processes, automotive and heavy vehicle engines, diesel generators, and incinerators. There are additional requirements to reduce CO2 production and environmental footprints in many of these applications. Recent work with the Strategic Environmental Research and Development Program office has investigated new thermoelectric (TE) materials and systems that can operate at higher performance levels and show a viable pathway to lightweight, small form-factor, advanced thermoelectric generator (TEG) systems to recover waste heat in many of these applications. New TE materials include nano-composite materials such as lead-antimony-silver-telluride (LAST) and lead-antimony-silver-tin-telluride (LASTT) compounds. These new materials have created opportunities for high-performance, segmented-element TE devices. New higher-performance TE devices segmenting LAST/LASTT materials with bismuth telluride have been designed and fabricated. Sectioned TEG systems using these new TE devices and materials have been designed. Integrated heat exchanger/TE device system analyses of sectioned TE system designs have been performed creating unique efficiency-power maps that provide better understandings and comparisons of design tradeoffs and nominal and off-nominal system performance conditions. New design perspectives in optimization of sectioned TE design approaches are discussed that provide insight on how to optimize such sectioned TE systems. System performance analyses using ANSYS® TE modeling capabilities have integrated heat exchanger performance models with ANSYS® TE models to extend its analysis capabilities beyond simple constant hot-side and cold-side temperature conditions . Analysis results portray external resistance effects, matched load conditions, maximum power vs. maximum efficiency points simultaneously.

  19. 3872 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 12, NO. 8, AUGUST 2013 On Optimizing Green Energy Utilization for

    E-Print Network [OSTI]

    Ansari, Nirwan

    . With the development of green energy technologies, BSs are able to be powered by green energy in order to reduce the on cellular networks are powered by both on-grid energy and green energy. We optimize the energy utilization in such networks by maximizing the utilization of green energy, and thus saving on-grid energy. The optimal usage

  20. Optimization of the baseline and the parent muon energy for a low energy neutrino factory

    E-Print Network [OSTI]

    Amol Dighe; Srubabati Goswami; Shamayita Ray

    2012-10-05T23:59:59.000Z

    We discuss the optimal setup for a low energy neutrino factory in order to achieve a 5\\sigma-discovery of a nonzero mixing angle \\theta_{13}, a nonzero CP phase \\delta_{CP}, and the mass hierarchy. We explore parent muon energies in the range 5--16 GeV, and baselines in the range 500--5000 km. We present the results in terms of the reach in sin^2\\theta_{13}, emphasizing the dependence of the optimal baseline on the true value of \\delta_{CP}. We show that the sensitivity of a given setup typically increases with parent muon energy, reaching saturation for higher energies. The saturation energy is larger for longer baselines; we present an estimate of this dependence. In the light of the recent indications of a large \\theta_{13}, we also determine how these preferences would change if indeed a large \\theta_{13} is confirmed. In such a case, the baselines ~2500 km (~1500 km) may be expected to lead to hierarchy determination (\\delta_{CP} discovery) with the minimum exposure.

  1. Computational Research Challenges and Opportunities for the Optimization of Fossil Energy Power Generation System

    SciTech Connect (OSTI)

    Zitney, S.E.

    2007-06-01T23:59:59.000Z

    Emerging fossil energy power generation systems must operate with unprecedented efficiency and near-zero emissions, while optimizing profitably amid cost fluctuations for raw materials, finished products, and energy. To help address these challenges, the fossil energy industry will have to rely increasingly on the use advanced computational tools for modeling and simulating complex process systems. In this paper, we present the computational research challenges and opportunities for the optimization of fossil energy power generation systems across the plant lifecycle from process synthesis and design to plant operations. We also look beyond the plant gates to discuss research challenges and opportunities for enterprise-wide optimization, including planning, scheduling, and supply chain technologies.

  2. Development of multiscale models for the performance of the gas and oil seals in rotary engines

    E-Print Network [OSTI]

    Picard, Mathieu

    2014-01-01T23:59:59.000Z

    Rotary engines offer higher power density, fewer parts and lower vibrations than conventional reciprocating piston engines. However, rotary engines are more difficult to seal because of the rotor shape which leads to higher ...

  3. Realistic Industrial Scale Energy Optimization: Part II - Analytic Techniques

    E-Print Network [OSTI]

    Kleinschrodt, F. J., III

    1982-01-01T23:59:59.000Z

    such as distillation path optimization, reaction path optimization and heat exchange optimization. These techniques are being supported by other workers in the area of efficiency measurement, availability analysis and exergy analysis which will serve to guide... and exergy analysis are all examples of targeting tech niques. They are all effective at describing where your process lies in the efficiency domain but do not really help you in telling you where you should be going. These techniques are being discussed...

  4. Model-based simultaneous optimization of multiple design parameters for lithium-ion batteries for maximization of energy density

    E-Print Network [OSTI]

    Subramanian, Venkat

    of energy density. optimization of design parameters. such as implantable cardiovascular defibrillators (ICDs) to high power/high energy applications such as hybrid carsModel-based simultaneous optimization of multiple design parameters for lithium-ion batteries

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

    E-Print Network [OSTI]

    Paderborn, Universität

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

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

    E-Print Network [OSTI]

    Pedram, Massoud

    Charge Migration Efficiency Optimization in Hybrid Electrical Energy Storage (HEES) Systems the excessive electric energy in the electrical energy storage (EES) rather than converting into a different) are typically not balanced with each other. Storage of excessive en- ergy and compensation of the energy

  7. Energy Management for an Onboard Storage System Based on Multi-Objective Optimization

    E-Print Network [OSTI]

    Paderborn, Universität

    Energy Management for an Onboard Storage System Based on Multi-Objective Optimization Tobias Knoke an onboard energy storage, the overhead line peak power and energy consumption can be reduced. The storage. This can be achieved by using an onboard energy storage, which recuperates the power during the braking

  8. OPTIMIZATION OF RUNNING STRATEGIES BASED ON ANAEROBIC ENERGY AND VARIATIONS OF VELOCITY

    E-Print Network [OSTI]

    OPTIMIZATION OF RUNNING STRATEGIES BASED ON ANAEROBIC ENERGY AND VARIATIONS OF VELOCITY AMANDINE extend this analysis, based on the equation of motion and aerobic energy, to include a balance of anaerobic energy (or accumulated oxygen deficit) and an energy recreation term when the speed decreases. We

  9. Incorporating Drivability Metrics into Optimal Energy Management Strategies for Hybrid Vehicles

    E-Print Network [OSTI]

    Grizzle, Jessy W.

    Incorporating Drivability Metrics into Optimal Energy Management Strategies for Hybrid Vehicles fuel economy performance is highly sensitive to the energy management strategy used to select among are characterized by multiple energy sources; the control strategy to select among these multiple energy sources

  10. Models for Optimization of Energy Consumption of Pumps in a Wastewater Processing Plant

    E-Print Network [OSTI]

    Kusiak, Andrew

    ; Energy consumption; Data collection; Neural networks; Dynamic models; Statics; Water treatment plants. Author keywords: Wastewater pump models; Energy consumption; Pump energy; Data mining; Head influenceModels for Optimization of Energy Consumption of Pumps in a Wastewater Processing Plant Zijun Zhang

  11. Ultrasonic Rayleigh wave inspection of unit train rotary couplers

    E-Print Network [OSTI]

    Salkowski, Charles Leo

    1988-01-01T23:59:59.000Z

    by the Lower Colorado River Authority (LCRA) fleet of 90, 718 kg. high side, rotary dump gondolas. The cars travel 5205 knr round trip from La Grange to the Decker Mines near Gillete, wyoming in approximately ten days. The annual rate of service accumulation.... There are several designs ol' rotary couplers in use, one of which has experienced extraordinarily high failure rates. Car maintenance occurs at the LCRA shop in Smithville, Texas and at other railroad shops along coal train routes. These shops perform...

  12. Microwave lamp with multi-purpose rotary motor

    DOE Patents [OSTI]

    Ury, Michael G. (Bethesda, MD); Turner, Brian (Myersville, MD); Wooten, Robert D. (Rockville, MD)

    1999-01-01T23:59:59.000Z

    In a microwave powered electrodeless lamp, a single rotary motor is used to a) rotate the bulb and b) provide rotary motion to a blower or pump means for providing cooling fluid to the magnetron and/or to a forced gas cooling for providing cooler gas to the bulb. The blower may consist of only of an impeller without the usual blower housing. The motor, bulb stem and bulb, or motor, bulb stem, bulb and blower may be formed as an integral unit so as to facilitate replacement.

  13. Microwave lamp with multi-purpose rotary motor

    DOE Patents [OSTI]

    Ury, M.G.; Turner, B.; Wooten, R.D.

    1999-02-02T23:59:59.000Z

    In a microwave powered electrodeless lamp, a single rotary motor is used to (a) rotate the bulb and (b) provide rotary motion to a blower or pump means for providing cooling fluid to the magnetron and/or to a forced gas cooler for providing cooling gas to the bulb. The blower may consist of only of an impeller without the usual blower housing. The motor, bulb stem and bulb, or motor, bulb stem, bulb and blower may be formed as an integral unit so as to facilitate replacement. 8 figs.

  14. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    not release detailed energy consumption data, and in generalof access to actual energy consumption data limits the scopeand simulations. Energy consumption data were collected from

  15. IBM and Energy Efficiency: Systems Recommisiong and Optimization

    E-Print Network [OSTI]

    Veilleux, Y.; Boulianne, J. P.; Lefebvre, P.

    2013-01-01T23:59:59.000Z

    for optimal operation ? HVAC motor fans: Vriable speed drives (VFD) installation on air supply and return fans. Humidification System OptimizationBefore After TEMP-HUM:M2:2-46-545.pv % HR HVAC:M2-RDC-PLA:VLV-HUM.pv % SPECS HUMIDIT? MINIMUM.Value Plot... instruments added to meet control requirements. PID control loop tuning was performed for optimal operation. Measures resulted in reducing the cooling and heating required for the systems as well as the electrical load on the fan motors. Some operational...

  16. ON-LINE OPTIMIZATION, ENERGY ANALYSIS AND ENVIRONMENTAL IMPACT ASSESSMENT OF SULFURIC ACID CATALYZED ALKYLATION

    E-Print Network [OSTI]

    Pike, Ralph W.

    reduction through technology modification in reactions and separations, energy conservation (pinch analysis Enterprises Refinery in Convent, Louisiana. Using the flowsheeting, on-line optimization, pinch analysis-line optimization and pinch analysis programs, and the EPA pollution index methodology. Visual Basic was used

  17. Dynamic Ping Optimization for Surveillance in Multistatic Sonar Buoy Networks with Energy Constraints

    E-Print Network [OSTI]

    Amir, Yair

    Dynamic Ping Optimization for Surveillance in Multistatic Sonar Buoy Networks with Energy optimization of ping schedule in an active sonar buoy network deployed to provide persistent surveillance management of power consumption for pinging is important to support the required lifetime of the network

  18. Energy Optimizations for Mobile Terminals via Computation Offloading

    E-Print Network [OSTI]

    Stojmenovic, Ivan

    design trends of energy efficient mobile applications. Index Terms--Mobile terminal, energy, computation result demonstrates that although energy consumption widely varies drastically depending upon to reduce the energy consumption of computation ­ remote execution. One can offload computational tasks

  19. High fidelity nuclear energy system optimization towards an environmentally benign, sustainable, and secure energy source.

    SciTech Connect (OSTI)

    Tsvetkov, Pavel Valeryevich (Texas A& M University, College Station, TX); Rodriguez, Salvador B.; Ames, David E., II (Texas A& M University, College Station, TX); Rochau, Gary Eugene

    2009-09-01T23:59:59.000Z

    The impact associated with energy generation and utilization is immeasurable due to the immense, widespread, and myriad effects it has on the world and its inhabitants. The polar extremes are demonstrated on the one hand, by the high quality of life enjoyed by individuals with access to abundant reliable energy sources, and on the other hand by the global-scale environmental degradation attributed to the affects of energy production and use. Thus, nations strive to increase their energy generation, but are faced with the challenge of doing so with a minimal impact on the environment and in a manner that is self-reliant. Consequently, a revival of interest in nuclear energy has followed, with much focus placed on technologies for transmuting nuclear spent fuel. The performed research investigates nuclear energy systems that optimize the destruction of nuclear waste. In the context of this effort, nuclear energy system is defined as a configuration of nuclear reactors and corresponding fuel cycle components. The proposed system has unique characteristics that set it apart from other systems. Most notably the dedicated High-Energy External Source Transmuter (HEST), which is envisioned as an advanced incinerator used in combination with thermal reactors. The system is configured for examining environmentally benign fuel cycle options by focusing on minimization or elimination of high level waste inventories. Detailed high-fidelity exact-geometry models were developed for representative reactor configurations. They were used in preliminary calculations with Monte Carlo N-Particle eXtented (MCNPX) and Standardized Computer Analysis for Licensing Evaluation (SCALE) code systems. The reactor models have been benchmarked against existing experimental data and design data. Simulink{reg_sign}, an extension of MATLAB{reg_sign}, is envisioned as the interface environment for constructing the nuclear energy system model by linking the individual reactor and fuel component sub-models for overall analysis of the system. It also provides control over key user input parameters and the ability to effectively consolidate vital output results for uncertainty/sensitivity analysis and optimization procedures. The preliminary analysis has shown promising advanced fuel cycle scenarios that include Pressure Water Reactors Pressurized Water Reactors (PWRs), Very High Temperature Reactors (VHTRs) and dedicated HEST waste incineration facilities. If deployed, these scenarios may substantially reduce nuclear waste inventories approaching environmentally benign nuclear energy system characteristics. Additionally, a spent fuel database of the isotopic compositions for multiple design and control parameters has been created for the VHTR-HEST input fuel streams. Computational approaches, analysis metrics, and benchmark strategies have been established for future detailed studies.

  20. A Framework for the Optimization of Integrated Energy Systems...

    Open Energy Info (EERE)

    Member 15 November, 2012 - 14:19 Literature Review The author proposed a generalized, control-oriented, exergy-based objective function for optimizing the ESI. It was generalized...

  1. Optimization of Energy Transfer Processes in Photosynthetic Systems...

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

    efficient and robust. In this talk, I will discuss the optimization of both natural and artificial systems: A simple scaling theory is used to examine the interplay of quantum...

  2. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    approximately to heat- or load-follow. Where there was awas approximately to heat- or load-follow. As in Baltimore,and performance. no DG load-follow heat-follow optimal load-

  3. Simulation Models to Optimize the Energy Consumption of Buildings 

    E-Print Network [OSTI]

    Burhenne, S.; Jacob, D.

    2008-01-01T23:59:59.000Z

    In practice, building operation systems are only adjusted during commissioning. This is done manually and leads to failure-free but often inefficient operation. This work deals with the development of simulation models to describe and optimize...

  4. Local energy management through mathematical modeling and optimization

    E-Print Network [OSTI]

    Craft David (David Loren), 1973-

    2004-01-01T23:59:59.000Z

    (cont.) Extensions to the core TOTEM model include a demand charge model, used for making daily optimal control decisions when the electric bill includes a charge based on the monthly maximum power draw. The problem of ...

  5. ICREPQ (Intern. Conf. On Renewable Energies and Power Quality) 2003, Vigo (Spain) 9-11 april 2003. ECONOMIC FORMALISM FOR OPTIMIZING THE DESIGN AND ENERGY

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . ECONOMIC FORMALISM FOR OPTIMIZING THE DESIGN AND ENERGY MANAGEMENT OF A HYBRID WIND/PHOTOVOLTAIC SYSTEM O@bretagne.ens-cachan.fr Abstract: The objective herein is to establish a set of rules and tools for optimizing both energy, design optimization 1. Introduction Our aim is to satisfy the energy-related demand of the consumer

  6. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    National Renewable Energy Laboratory’s Hybrid Optimizationas the National Renewable Energy Laboratory’s (NREL) Hybrid

  7. Energy-optimal schedules of real-time jobs with hard deadlines

    E-Print Network [OSTI]

    George, John Vijoe

    2005-11-01T23:59:59.000Z

    In this thesis, we develop algorithms that make optimal use of frequency scaling to schedule jobs with real??time requirements. Dynamic voltage scaling is a technique used to reduce energy consumption in wide variety of systems. Reducing supply...

  8. Monitoring and Optimization of Building Operations of a Low-Energy School Building

    E-Print Network [OSTI]

    Koenigsdorff, R.; Heinrich, S.; Baumann, O.; Reiser, C.

    consumption was almost met during the second year of operation in 2006 and finally achieved in 2007, due to well-working optimization measures, which were identified through monitoring of the building operation. Heating and cooling energy is mainly provided...

  9. Commissioning to Meet Space Qualification Criteria vs. Energy Consumption Optimization Focused Commissioning

    E-Print Network [OSTI]

    Sellers, D.; Irvine, L.

    2001-01-01T23:59:59.000Z

    In many cases, the commissioning process is driven by space quality criteria rather than by energy consumption and optimization criteria. This is especially true for the HVAC systems serving clean rooms in the semi-conductor and pharmaceuticals...

  10. Application Study of the Pump Water Flow Station for Building Energy Consumption Monitoring and Control Optimization

    E-Print Network [OSTI]

    Liu, G.; Liu, M.

    2006-01-01T23:59:59.000Z

    This paper presents a new building energy monitoring and pump speed control method. The pump speed is controlled to maintain the system resistance at an optimized value to approach the best pump efficiency and save pump power. The system resistance...

  11. Towards optimal energy-quality tradeoff in tracking via sensor Alessio Benavoli and Luigi Chisci

    E-Print Network [OSTI]

    Chisci, Luigi

    proportional to the number of active sensors, energy efficiency calls for the implementation, inside about the current sensor energy status. This is certainly efficient in terms of tracking qualityTowards optimal energy-quality tradeoff in tracking via sensor networks Alessio Benavoli and Luigi

  12. Near Optimal Demand-Side Energy Management Under Real-time Demand-Response Pricing

    E-Print Network [OSTI]

    Boutaba, Raouf

    Near Optimal Demand-Side Energy Management Under Real-time Demand-Response Pricing Jin Xiao, Jae--In this paper, we present demand-side energy manage- ment under real-time demand-response pricing as a task, demand-response, energy management I. INTRODUCTION The growing awareness of global climate change has

  13. Optimal Traffic-Oblivious Energy-Aware Routing For Multihop Wireless Networks

    E-Print Network [OSTI]

    Holte, Robert

    constraints. If the power supply is renewable, it is desirable that the energy consumption rate is less than the renewal rate. Lin et al. [15] study power-aware routing with renewable energy sources. Some previous workOptimal Traffic-Oblivious Energy-Aware Routing For Multihop Wireless Networks Yuxi Li Janelle Harms

  14. RETROFIT: A SOFTWARE TO SOLVE OPTIMIZATION AND IDENTIFICATION PROBLEMS APPLIED TO BUILDING ENERGY

    E-Print Network [OSTI]

    Boyer, Edmond

    RETROFIT: A SOFTWARE TO SOLVE OPTIMIZATION AND IDENTIFICATION PROBLEMS APPLIED TO BUILDING ENERGY the software ReTrofiT that specifically treats this kind of problems applied to building energy performance mod, inverse problems. INTRODUCTION Energy management systems in buildings greatly contribute

  15. Optimal Integration of Renewable Energy Resources in Data Centers with Behind-the-Meter Renewable Generator

    E-Print Network [OSTI]

    Mohsenian-Rad, Hamed

    1 Optimal Integration of Renewable Energy Resources in Data Centers with Behind-the-Meter Renewable-- Renewable energy resources, such as wind and solar power, are rapidly becoming generation technologies-temporal variations, the integration of renewable energy resources is usually very challenging. Some of the previously

  16. Optimal Strategies for Communication and Remote Estimation with an Energy Harvesting Sensor

    E-Print Network [OSTI]

    Teneketzis, Demosthenis

    1 Optimal Strategies for Communication and Remote Estimation with an Energy Harvesting Sensor A strategies. Communication problems with energy harvesting transmitters have been studied recently (see [1 with an energy harvesting sensor and a remote estimator. The sensor observes the state of a discrete-time source

  17. Keller's model Variable energy recreation Bounding the derivative of f Optimization of running strategies based on

    E-Print Network [OSTI]

    Boyer, Edmond

    strategies based on anaerobic energy and variations of velocity J. Fr´ed´eric Bonnans Inria-Saclay and CMAP of running strategies hal-01024231,version1-15Jul2014 #12;Keller's model Variable energy recreation Bounding.F. Bonnans, Optimization of running strategies based on anaerobic energy and variations of velocity. SIAM J

  18. SmartTecO: Context-Based Ambient Sensing and Monitoring for Optimizing Energy Consumption

    E-Print Network [OSTI]

    Beigl, Michael

    SmartTecO: Context-Based Ambient Sensing and Monitoring for Optimizing Energy Consumption Yong Ding networks and a context awareness system, the acquired data will be interpreted into different energy the actuation mod- ule a certain context, which allows managing and saving the energy consumption of home

  19. ENERGY OPTIMIZATION OF ALGEBRAIC MULTIGRID BASES \\Lambda JAN MANDEL y , MARIAN BREZINA z , AND PETR VAN

    E-Print Network [OSTI]

    Brezina, Marian

    ], we have proposed an alternative set of objectives, which includes ffl minimization of energyENERGY OPTIMIZATION OF ALGEBRAIC MULTIGRID BASES \\Lambda JAN MANDEL y , MARIAN BREZINA z , AND PETR coarse basis functions in algebraic multigrid by minimizing the sum of their energies, subject

  20. Division of IT Convergence Engineering Optimal Demand-Side Energy Management Under

    E-Print Network [OSTI]

    Boutaba, Raouf

    Division of IT Convergence Engineering Optimal Demand-Side Energy Management Under Real-time Demand of appliance specific adapters. Designed and implemented GHS Modeled the demand-side energy management problem (NP-hard) Designed a scheduling algorithm for demand side energy management Showed that our

  1. Optimal Sleep-Wake Policies for an Energy Harvesting Sensor Node

    E-Print Network [OSTI]

    Sharma, Vinod

    devices are solar cells, wind turbines and piezo-electric cells, which extract energy from the environmentOptimal Sleep-Wake Policies for an Energy Harvesting Sensor Node Vinay Joseph, Vinod Sharma with an energy harvesting source. In any slot, the sensor node is in one of two modes: Wake or Sleep

  2. OPTIMAL OPERATION OF AN INTEGRATED ENERGY PARK INCLUDING FOSSIL FUEL POWER GENERATION,

    E-Print Network [OSTI]

    Stanford University

    OPTIMAL OPERATION OF AN INTEGRATED ENERGY PARK INCLUDING FOSSIL FUEL POWER GENERATION, CO2 CAPTURE AND WIND A THESIS SUBMITTED TO THE DEPARTMENT OF ENERGY RESOURCES ENGINEERING OF STANFORD UNIVERSITY of Master of Science in Energy Resources Engineering. (Louis J. Durlofsky) Principal Co-Adviser I certify

  3. Cost Optimal Operation of Thermal Energy Storage System with Real-Time Prices

    E-Print Network [OSTI]

    Cost Optimal Operation of Thermal Energy Storage System with Real-Time Prices Toru Kashima, Member of the result [4]. The same can be said for time varying real-time prices. Real-time energy pricing is not yet such as chillers. Energy resources such as electricity or natural gas are bought from suppliers at certain prices

  4. Representing Energy Price Variability in Long-and Medium-term Hydropower Optimization

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    1 Representing Energy Price Variability in Long- and Medium- term Hydropower Optimization Marcelo A Resources Planning and Management, 2012, in press ABSTRACT Representing peak and off-peak energy prices and examines the reliability of an existing approximate method to incorporate hourly energy price information

  5. An Optimal Approximate Dynamic Programming Algorithm for the Energy Dispatch Problem with Grid-

    E-Print Network [OSTI]

    Powell, Warren B.

    dispatch and energy allocation decisions in the presence of grid-level storage. The model makes it possible the economic behavior of energy allocation and electric power dispatch. Linear pro- gramming has been usedAn Optimal Approximate Dynamic Programming Algorithm for the Energy Dispatch Problem with Grid

  6. An Energy and Deadline Aware Resource Provisioning, Scheduling and Optimization Framework for Cloud Systems

    E-Print Network [OSTI]

    Pedram, Massoud

    An Energy and Deadline Aware Resource Provisioning, Scheduling and Optimization Framework for Cloud demand for low-cost, high performance, and energy-efficient computing. In this large-scale, heterogeneous the sense of lowering operation costs by maximizing energy efficiency, while satisfying user deadlines

  7. An Optimal Resource Control Scheme under Fidelity and Energy Constraints in Sensor Networks

    E-Print Network [OSTI]

    Zhang, Yanyong

    1 An Optimal Resource Control Scheme under Fidelity and Energy Constraints in Sensor Networks control under the fidelity and energy constraints, we present a resource increase and decrease algorithm networks, Resource control, Fidelity, Energy efficiency I. INTRODUCTION As the technologies in MEMS

  8. On downstream hydraulic geometry and optimal energy expenditure: case study of the Ashley and Taieri Rivers

    E-Print Network [OSTI]

    Ramírez, Jorge A.

    On downstream hydraulic geometry and optimal energy expenditure: case study of the Ashley Abstract The downstream distribution of channel geometry and of the rate of energy expenditure per unit the network. We look at energy expenditure from two perspectives. (1) In the context of downstream hydraulic

  9. Optimal Control of Multi-battery Energy-aware Systems Tao Wang and Christos G. Cassandras

    E-Print Network [OSTI]

    Cassandras, Christos G.

    Optimal Control of Multi-battery Energy-aware Systems Tao Wang and Christos G. Cassandras Division or connecting to the grid for electric vehicles adds an extra level of flexibility and power control. Energy-aware Battery Model (KBM) [12], [13]. Since an efficient battery model in energy-aware systems requires not only

  10. Dynamic online optimization of a house heating system in a fluctuating energy price

    E-Print Network [OSTI]

    Skogestad, Sigurd

    production should cover the demand at any given time. One possible approach to overcome this, is demand side and weather forecasts. The dynamic energy pricing for demand load management is in itself a non of the energy consumption in a building with energy storage capabilities. The goal is to find optimal policies

  11. Dynamic online optimization of a house heating system in a fluctuating energy price

    E-Print Network [OSTI]

    Skogestad, Sigurd

    at any given time. One possible approach to overcome this drawback is de- mand side load management. Here to demand information and weather forecasts. The dynamic energy pricing for demand load management of the energy consumption in a building with energy storage capabilities. The goal is to find optimal policies

  12. Reducing Building Energy Costs Using Optimized Operation Strategies for Constant Volume Air Handling Systems

    E-Print Network [OSTI]

    Liu, M.; Athar, A.; Reddy, A.; Claridge, D. E.; Haberl, J. S.; White, E.

    1994-01-01T23:59:59.000Z

    , building energy consumption can be further reduced even after these traditional O&M measures are applied. This involves optimal adjusting of cold deck and hot deck settings according to the ambient temperature and organizing cold deck settings properly... where more than one cold deck is present (Extended O&M Measures). The cold deck and hot deck settings can be adjusted continuously by the Energy Management and Control Systems without additional investment. The optimized cold deck settings can...

  13. Rotary Pipeline Processors Simon Moore, Peter Robinson, Steve Wilcox

    E-Print Network [OSTI]

    Robinson, Peter

    to the current range of superscalar designs using multiple instruction issue into parallel pipelines to increase] is designed around a bi-directional pipeline carry- ing instructions and arguments in one direction it will start to execute as soon as the data arrives. 2.2 Basic Pipeline Construction A rotary pipeline

  14. Webinar: Building Energy Optimization Tool (BEopt)Training

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy Zero Energy Ready Home (ZERH) Program represents a whole new level of home performance, with rigorous requirements that ensure outstanding levels of energy savings,...

  15. Optimization of running strategies based on anaerobic energy and ...

    E-Print Network [OSTI]

    Amandine Aftalion

    2013-08-13T23:59:59.000Z

    Aug 13, 2013 ... We extend this analysis, based on the equation of motion and aerobic energy, to include a balance of anaerobic energy (or accumulated ...

  16. Searching for the Optimal Mix of Solar and Efficiency in Zero Net Energy Buildings

    SciTech Connect (OSTI)

    Horowitz, S.; Christensen, C.; Anderson, R.

    2008-01-01T23:59:59.000Z

    Zero net energy (ZNE) buildings employ efficiency to reduce energy consumption and solar technologies to produce as much energy on site as is consumed on an annual basis. Such buildings leverage utility grids and net-metering agreements to reduce solar system costs and maintenance requirements relative to off-grid photovoltaic (PV)-powered buildings with batteries. The BEopt software was developed to efficiently identify cost-optimal building designs using detailed hour-by-hour energy simulation programs to evaluate the user-selected options. A search technique identifies optimal and near-optimal building designs (based on energy-related costs) at various levels of energy savings along the path from a reference building to a ZNE design. In this paper, we describe results based on use of the BEopt software to develop cost-optimal paths to ZNE for various climates. Comparing the different cases shows optimal building design characteristics, percent energy savings and cash flows at key points along the path, including the point at which investments shift from building improvements to purchasing PV, and PV array sizes required to achieve ZNE. From optimizations using the BEopt software for a 2,000-ft{sup 2} house in 4 climates, we conclude that, relative to a code-compliant (IECC 2006) reference house, the following are achievable: (1) minimum cost point: 22 to 38% source energy savings and 15 to 24% annual cash flow savings; (2) PV start point: 40 to 49% source energy savings at 10 to 12% annual cash flow savings; (3) break-even point: 43 to 53% source energy savings at 0% annual cash flow savings; and (4) ZNE point: 100% source energy savings with 4.5 to 8.1 kW{sub DC} PV arrays and 76 to 169% increase in cash flow.

  17. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    xliii Demand Side Management152 Demand Side Managementdemand response demand-side management energy efficiency

  18. BEopt: Software for Identifying Optimal Building Designs on the Path to Zero Net Energy; Preprint

    SciTech Connect (OSTI)

    Christensen, C.; Horowitz, S.; Givler, T.; Courtney, A.; Barker, G.

    2005-04-01T23:59:59.000Z

    A zero net energy (ZNE) building produces as much energy on-site as it uses on an annual basis--using a grid-tied, net-metered photovoltaic (PV) system and active solar. The optimal path to ZNE extends from a base case to the ZNE building through a series of energy-saving building designs with minimal energy-related owning and operating costs. BEopt is a computer program designed to find optimal building designs along the path to ZNE. A user selects from among predefined options in various categories to specify options to be considered in the optimization. Energy savings are calculated relative to a reference. The reference can be either a user-defined base-case building or a climate-specific Building America Benchmark building automatically generated by BEopt. The user can also review and modify detailed information on all available options and the Building America Benchmark in a linked options library spreadsheet.

  19. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    electric utilities, distributed generation investmentDistributed Power Generation: Planning and Evaluation Marcel Dekker, New York. Appendix A. UTILITYDistributed Generation Investment Optimization With the recent advent of small (100s of kW to several MW) DG that is cost competitive with utility

  20. Optimal Combination of Distributed Energy System in an Eco-Campusof Japan

    SciTech Connect (OSTI)

    Yang, Yongwen; Gao, Weijun; Zhou, Nan; Marnay, Chris

    2006-06-14T23:59:59.000Z

    In this study, referring to the Distributed Energy Resources Customer Adoption Model (DER-CAM) which was developed by the Ernest Orlando Lawrence Berkeley National Laboratory (LBNL), E-GAMS programmer is developed with a research of database of energy tariffs, DER (Distributed Energy Resources) technology cost and performance characteristics, and building energy consumption in Japan. E-GAMS is a tool designed to find the optimal combination of installed equipment and an idealized operating schedule to minimize a site's energy bills. In this research, by using E-GAMS, we present a tool to select the optimal combination of distributed energy system for an Ecological-Campus, Kitakyushu, Science and Research Park (KSRP). We discuss the effects of the combination of distributed energy technologies on the energy saving, economic efficiency and environmental benefits.

  1. A New Approach for Determining Optimal Air Compressor Location in A Manufacturing Facility to Increase Energy Efficiency

    E-Print Network [OSTI]

    Zahlan, J.; Avci, M.; Asfour, S.

    2014-01-01T23:59:59.000Z

    An approach is proposed to determine the optimal air compressor location in a manufacturing facility. The optimization strategy is based on an objective function that minimizes the total energy consumption of the air compressor -thereby decreasing...

  2. EVALUATION OF ALTERNATIVE FILTER MEDIA FOR THE ROTARY MICROFILTER

    SciTech Connect (OSTI)

    Poirier, M.; Herman, D.; Bhave, R.

    2011-09-13T23:59:59.000Z

    SRS is currently developing and testing several processes to treat high level radioactive liquid waste. These processes include the Integrated Salt Disposition Process (ISDP), the Salt Waste Processing Facility (SWPF), and the Small Column Ion Exchange Process (SCIX). Each of these processes has a solid-liquid separation process that limits its throughput. SRNL researchers identified and tested the rotary microfilter as a technology to increase solid-liquid separation throughput. The testing showed significant improvement in filter flux with the rotary microfilter over the baseline crossflow filter (i.e., 2.5-6.5X during scoping tests, as much as 10X in actual waste tests, and approximately 3X in pilot-scale tests). SRNL received funding from DOE EM-21, and subsequently DOE EM-31 to develop the rotary microfilter for high level radioactive service. The work has included upgrading the rotary microfilter for radioactive service, testing with simulated SRS waste streams, and testing it with simulated Hanford waste streams. While the filtration rate is better than that obtained during testing of crossflow filters, the authors believe the rotary microfilter throughput can be improved by using a better filter membrane. The rotary microfilter membrane is made of stainless steel (Pall PMM050). Previous testing, funded by DOE EM-21, showed that asymmetric filters composed of a ceramic membrane on top of a stainless steel support produced higher filter flux than 100% stainless steel symmetric filters in crossflow filter tests. In that testing, the Pall Accusep and Graver filters produced 13-21% larger filter flux than the baseline 0.1 {micro}m Mott filter. While the improvement in flux is not as dramatic as the improvement of the rotary filter over a crossflow filter, a 13-21% increase could reduce the lifetime of a 30 year process by 4-6 years, with significant cost savings. Subsequent rotary filter testing showed the Pall PMM050 stainless steel filter membrane produced higher flux than the Mott filter media in bench-scale and pilot-scale testing. The Accusep and Graver filter media were not evaluated in that testing, because they are not available as flat sheets. The Accusep filter was developed at ORNL and licensed to Pall Corporation. This filter has a stainless steel support structure with a zirconium oxide ceramic membrane. The pore size is 0.1 {micro}m absolute. The Graver filter has a stainless steel support structure with a titanium dioxide ceramic membrane. The pore size is 0.07 {micro}m absolute. SRNL and ORNL are working together to develop filter media similar to the Accusep and Graver media, and to test them in a bench-scale filtration apparatus to attempt to improve the throughput of the rotary microfilter. This report describes the effort.

  3. Online Modeling in the Process Industry for Energy Optimization 

    E-Print Network [OSTI]

    Alexander, J.

    1988-01-01T23:59:59.000Z

    and electricity. It further discusses the methods of providing this energy for refineries, petrochemical plants, and other processing plants - chemical, paper, and metal. A typical system flow diagram is used to highlight the energy system network and describe...

  4. Optimizing Production of Hydroquinone Achieves Increased Yield and Energy Efficiency 

    E-Print Network [OSTI]

    Gross, S.

    2010-01-01T23:59:59.000Z

    2009 production to model of the old production strategy ? Amount of HQ produced in one year ? Year end inventory ? Energy Savings: compared 2009 electricity and steam usage to that of 2008 ? Manufacturing Cost Reporting (SAP) Results ? Energy...

  5. IBM and Energy Efficiency: Systems Recommisiong and Optimization 

    E-Print Network [OSTI]

    Veilleux, Y.; Boulianne, J. P.; Lefebvre, P.

    2013-01-01T23:59:59.000Z

    technologie 5 Environmental Policy Verification Corrective Actions Management Review Execution Planning Environmental Management System Bromont Groupe Syst?mes et technologie 6 IBM Bromont: Energy Efficency Results Energy Conservation...

  6. Optimal Real-time Dispatch for Integrated Energy Systems

    E-Print Network [OSTI]

    Firestone, Ryan Michael

    2007-01-01T23:59:59.000Z

    IES. Demand Response xxxii Studies of utility and buildingDemand Response and Energy Management in Commercial Buildings”

  7. High fidelity nuclear energy system optimization towards an environmentally benign, sustainable, and secure energy source.

    SciTech Connect (OSTI)

    Tsvetkov, Pavel Valeryevich (Texas A& M University, College Station, TX); Rodriguez, Salvador B.; Ames, David E., II (Texas A& M University, College Station, TX); Rochau, Gary Eugene

    2010-10-01T23:59:59.000Z

    A new high-fidelity integrated system method and analysis approach was developed and implemented for consistent and comprehensive evaluations of advanced fuel cycles leading to minimized Transuranic (TRU) inventories. The method has been implemented in a developed code system integrating capabilities of Monte Carlo N - Particle Extended (MCNPX) for high-fidelity fuel cycle component simulations. In this report, a Nuclear Energy System (NES) configuration was developed to take advantage of used fuel recycling and transmutation capabilities in waste management scenarios leading to minimized TRU waste inventories, long-term activities, and radiotoxicities. The reactor systems and fuel cycle components that make up the NES were selected for their ability to perform in tandem to produce clean, safe, and dependable energy in an environmentally conscious manner. The diversity in performance and spectral characteristics were used to enhance TRU waste elimination while efficiently utilizing uranium resources and providing an abundant energy source. A computational modeling approach was developed for integrating the individual models of the NES. A general approach was utilized allowing for the Integrated System Model (ISM) to be modified in order to provide simulation for other systems with similar attributes. By utilizing this approach, the ISM is capable of performing system evaluations under many different design parameter options. Additionally, the predictive capabilities of the ISM and its computational time efficiency allow for system sensitivity/uncertainty analysis and the implementation of optimization techniques.

  8. Energy-Optimal Collaborative GPS Localization with Short Range Communication

    E-Print Network [OSTI]

    Cai, Ying

    accuracy. In this paper, we show that the collaboration among proxy devices is helpful to energy-efficiently campuses. Next, we contemplate what is the best method for selfish mobile users to collaborate for energy-efficient localization, and suggest an energy-efficient and/or user fairness localization framework. Next, we develop

  9. IEEE INFOCOM 2002 1 Optimal Energy Allocation and Admission Control

    E-Print Network [OSTI]

    Modiano, Eytan

    with lower energy requirements requires a smaller energy source (solar panel, reactor, etc.) and a lighter continuous sunshine for its solar cells except for brief periods of eclipse, while demand for energy generally consists of power from solar cells [10]. The quantity and timing of the input are known and can

  10. COMPENDIUM OF COMPLETED TESTING IN SUPPORT OF ROTARY MICROFILTRATION AT SAVANNAH RIVER SITE AND HANFORD

    SciTech Connect (OSTI)

    HUBER HJ

    2011-05-24T23:59:59.000Z

    This report presents a chronological summary of previous technology development efforts concerning the rotary microfiltration (RMF) unit from SpinTek{trademark}. Rotary microfiltration has been developed for high radiation application over the last decades as one of the optional filtration techniques for supplemental treatment. Supplemental treatment includes a near- or in-tank solids separation and subsequent cesium removal unit, followed by an immobilization technique; this includes options such as steam reforming, bulk vitrification or cast stone (grout). The main difference between RMF and standard cross flow filtration (CFF) is the disconnection of filtrate flux from feed velocity; i.e., filtrate flux is only dependent on transmembrane pressure, filter fouling and temperature. These efforts have been supported by the U.S. Department of Energy (DOE), Office of Cleanup Technologies since the 1990s by their Environmental Management Program (currently EM-31). In order to appropriately address future testing needs, a compilation of the relevant previous testing reports was essential. This compendium does not intend to cover all of the presentations/reports that were produced over the last decades but focuses on those of relevance for developing an RMF unit fit for deployment at the Hanford site. The report is split into three parts: (1) an introductory overview, (2) Figure 1 graphically covering the main development steps and its key players and (3) a more detailed table of the citations and brief descriptions of results and recommendations.

  11. Optimization of Feedback in a MISO Downlink with Energy Harvesting Users

    E-Print Network [OSTI]

    Uysal-Biyikoglu, Elif

    Optimization of Feedback in a MISO Downlink with Energy Harvesting Users Mahdi Shakiba channel states) in order to maximize certain throughput goals. While the MISO chan- nel capacity from to the energy budget of the users. Note that in the Multi Input Single Output (MISO) channel (with m antennas

  12. Optimal Operation of a Petlyuk Distillation Column: Energy Savings by Over-fractionating

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Optimal Operation of a Petlyuk Distillation Column: Energy Savings by Over-fractionating Vidar Trondheim, Norway Keywords: Distillation, Petlyuk, Divided-wall, Minimum energy Abstract This paper shows the unexpected result that over-fractionating one of the product streams in a Petlyuk distillation column may

  13. Microprocessor Energy Characterization and Optimization through Fast, Accurate, and Flexible Simulation

    E-Print Network [OSTI]

    Microprocessor Energy Characterization and Optimization through Fast, Accurate, and Flexible. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Arthur C. Smith Chairman, Department Committee on Graduate Students #12;2 #12;Microprocessor Energy dissipation is emerging as a key constraint for both high-performance and embed- ded microprocessor designs

  14. Improvement of the Energy Resolution via an Optimized Digital Signal Processing in GERDA Phase I

    E-Print Network [OSTI]

    M. Agostini; M. Allardt; A. M. Bakalyarov; M. Balata; I. Barabanov; N. Barros; L. Baudis; C. Bauer; N. Becerici-Schmidt; E. Bellotti; S. Belogurov; S. T. Belyaev; G. Benato; A. Bettini; L. Bezrukov; T. Bode; D. Borowicz; V. Brudanin; R. Brugnera; D. Budjáš; A. Caldwell; C. Cattadori; A. Chernogorov; V. D'Andrea; E. V. Demidova; A. di Vacri; A. Domula; E. Doroshkevich; V. Egorov; R. Falkenstein; O. Fedorova; K. Freund; N. Frodyma; A. Gangapshev; A. Garfagnini; P. Grabmayr; V. Gurentsov; K. Gusev; A. Hegai; M. Heisel; S. Hemmer; G. Heusser; W. Hofmann; M. Hult; L. V. Inzhechik; J. Janicskó Csáthy; J. Jochum; M. Junker; V. Kazalov; T. Kihm; I. V. Kirpichnikov; A. Kirsch; A. Klimenko; K. T. Knöpfle; O. Kochetov; V. N. Kornoukhov; V. V. Kuzminov; M. Laubenstein; A. Lazzaro; V. I. Lebedev; B. Lehnert; H. Y. Liao; M. Lindner; I. Lippi; A. Lubashevskiy; B. Lubsandorzhiev; G. Lutter; C. Macolino; B. Majorovits; W. Maneschg; E. Medinaceli; M. Misiaszek; P. Moseev; I. Nemchenok; D. Palioselitis; K. Panas; L. Pandola; K. Pelczar; A. Pullia; S. Riboldi; N. Rumyantseva; C. Sada; M. Salathe; C. Schmitt; B. Schneider; S. Schönert; J. Schreiner; A. -K. Schütz; O. Schulz; B. Schwingenheuer; O. Selivanenko; M. Shirchenko; H. Simgen; A. Smolnikov; L. Stanco; M. Stepaniuk; C. A. Ur; L. Vanhoefer; A. A. Vasenko; A. Veresnikova; K. von Sturm; V. Wagner; M. Walter; A. Wegmann; T. Wester; H. Wilsenach; M. Wojcik; E. Yanovich; P. Zavarise; I. Zhitnikov; S. V. Zhukov; D. Zinatulina; K. Zuber; G. Zuzel

    2015-02-15T23:59:59.000Z

    An optimized digital shaping filter has been developed for the GERDA experiment which searches for neutrinoless double beta decay in 76Ge. The GERDA Phase I energy calibration data have been reprocessed and an average improvement of 0.3 keV in energy resolution (FWHM) at the 76Ge Q value for 0\

  15. Optimizing the LU Factorization for Energy Efficiency on a Many-Core Architecture

    E-Print Network [OSTI]

    Gao, Guang R.

    .S.A. {egarcia@,jaime@,rspavel@,ggao@capsl.}udel.edu Abstract. Power consumption and energy efficiency have become a ma- jor bottleneck in the design of new systems for high performance com- puting. The path the use of scalable models for energy consumption and the reorientation of optimization techniques

  16. Pipeline Strategy for Improving Optimal Energy Efficiency in Ultra-Low Voltage Design

    E-Print Network [OSTI]

    Kambhampati, Subbarao

    Pipeline Strategy for Improving Optimal Energy Efficiency in Ultra-Low Voltage Design Mingoo Seok for the ultra low voltage regime. Based on an analytical model and simulations, we propose a pipelining technique that provides higher energy effi- ciency and performance than conventional approaches to ultra low

  17. On optimizing energy consumption: An adaptative authentication level in wireless sensor networks

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On optimizing energy consumption: An adaptative authentication level in wireless sensor networks-hungry. As energy is a scarce resource in wireless sensor networks, we propose a new approach that consists or third-party nodes. I. INTRODUCTION Wireless sensor networks (WSNs) are used in several fields

  18. Optimization of the Energy Efficiency of a Hybrid Broadcast/Unicast Network

    E-Print Network [OSTI]

    Boyer, Edmond

    Optimization of the Energy Efficiency of a Hybrid Broadcast/Unicast Network Nicolas Cornillet previously defined, we propose a new operating mode for the hybrid network that can improve the energy a particular attention. In [1], a model for a hybrid network is introduced. This network consists in the inter

  19. Incorporating Drivability Metrics into Optimal Energy Management Strategies for Hybrid Vehicles Part 1: Model, Methods, and

    E-Print Network [OSTI]

    Grizzle, Jessy W.

    Incorporating Drivability Metrics into Optimal Energy Management Strategies for Hybrid Vehicles-parallel configuration considered here. Hybrid vehicles are characterized by multiple energy sources; the strategy Gillespie, Jeffrey A. Cook, and J.W. Grizzle Abstract--Hybrid Vehicle fuel economy performance is highly

  20. Improvement of the Energy Resolution via an Optimized Digital Signal Processing in GERDA Phase I

    E-Print Network [OSTI]

    Agostini, M; Bakalyarov, A M; Balata, M; Barabanov, I; Barros, N; Baudis, L; Bauer, C; Becerici-Schmidt, N; Bellotti, E; Belogurov, S; Belyaev, S T; Benato, G; Bettini, A; Bezrukov, L; Bode, T; Borowicz, D; Brudanin, V; Brugnera, R; Budjáš, D; Caldwell, A; Cattadori, C; Chernogorov, A; D'Andrea, V; Demidova, E V; di Vacri, A; Domula, A; Doroshkevich, E; Egorov, V; Falkenstein, R; Fedorova, O; Freund, K; Frodyma, N; Gangapshev, A; Garfagnini, A; Grabmayr, P; Gurentsov, V; Gusev, K; Hegai, A; Heisel, M; Hemmer, S; Heusser, G; Hofmann, W; Hult, M; Inzhechik, L V; Csáthy, J Janicskó; Jochum, J; Junker, M; Kazalov, V; Kihm, T; Kirpichnikov, I V; Kirsch, A; Klimenko, A; Knöpfle, K T; Kochetov, O; Kornoukhov, V N; Kuzminov, V V; Laubenstein, M; Lazzaro, A; Lebedev, V I; Lehnert, B; Liao, H Y; Lindner, M; Lippi, I; Lubashevskiy, A; Lubsandorzhiev, B; Lutter, G; Macolino, C; Majorovits, B; Maneschg, W; Medinaceli, E; Misiaszek, M; Moseev, P; Nemchenok, I; Palioselitis, D; Panas, K; Pandola, L; Pelczar, K; Pullia, A; Riboldi, S; Rumyantseva, N; Sada, C; Salathe, M; Schmitt, C; Schneider, B; Schönert, S; Schreiner, J; Schütz, A -K; Schulz, O; Schwingenheuer, B; Selivanenko, O; Shirchenko, M; Simgen, H; Smolnikov, A; Stanco, L; Stepaniuk, M; Ur, C A; Vanhoefer, L; Vasenko, A A; Veresnikova, A; von Sturm, K; Wagner, V; Walter, M; Wegmann, A; Wester, T; Wilsenach, H; Wojcik, M; Yanovich, E; Zavarise, P; Zhitnikov, I; Zhukov, S V; Zinatulina, D; Zuber, K; Zuzel, G

    2015-01-01T23:59:59.000Z

    An optimized digital shaping filter has been developed for the GERDA experiment which searches for neutrinoless double beta decay in 76Ge. The GERDA Phase I energy calibration data have been reprocessed and an average improvement of 0.3 keV in energy resolution (FWHM) at the 76Ge Q value for 0\

  1. Simulation for the Optimal Design of a Biped Robot: Analysis of Energy Consumption

    E-Print Network [OSTI]

    Gini, Giuseppina

    Simulation for the Optimal Design of a Biped Robot: Analysis of Energy Consumption Federico Moro1 at Chicago, USA 3 University of Belgrade, Institute Mihajlo Pupin, Robotics Laboratory, Serbia Abstract. Our first aim is to develop a systematic method to estimate energy consumption of bipedal locomotion

  2. Coal desulfurization in a rotary kiln combustor. Quarterly report No. 1, April 16, 1990--July 15, 1990

    SciTech Connect (OSTI)

    Cobb, J.T. Jr.

    1990-08-15T23:59:59.000Z

    BCR National Laboratory (BCRNL) has initiated a project aimed at evaluating the technical and economic feasibility of using a rotary kiln, suitably modified, to burn Pennsylvania anthracite wastes, co-fired with high-sulfur bituminous coal. Limestone will be injected into the kiln for sulfur control, to determine whether high sulfur capture levels can be achieved with high sorbent utilization. The principal objectives of this work are: (1) to prove the feasibility of burning anthracite refuse, with co-firing of high-sulfur bituminous coal and with limestone injection for sulfur emissions control, in a rotary kiln fitted with a Universal Energy International (UEI) air injector system; (2) to determine the emissions levels of SO{sub x} and NO{sub x} and specifically to identify the Ca/S ratios that are required to meet New Source Performance Standards; (3) to evaluate the technical and economic merits of a commercial rotary kiln combustor in comparison to fluidized bed combustors; and, (4) to ascertain the need for further work, including additional combustion tests, prior to commercial application, and to recommend accordingly a detailed program towards this end.

  3. Optimal Electron Energies for Driving Chromospheric Evaporation in Solar Flares

    E-Print Network [OSTI]

    Reep, Jeffrey; Alexander, David

    2015-01-01T23:59:59.000Z

    In the standard model of solar flares, energy deposition by a beam of electrons drives strong chromospheric evaporation leading to a significantly denser corona and much brighter emission across the spectrum. Chromospheric evaporation was examined in great detail by Fisher, Canfield, & McClymont (1985a,b,c), who described a distinction between two different regimes, termed explosive and gentle evaporation. In this work, we examine the importance of electron energy and stopping depths on the two regimes and on the atmospheric response. We find that with explosive evaporation, the atmospheric response does not depend strongly on electron energy. In the case of gentle evaporation, lower energy electrons are significantly more efficient at heating the atmosphere and driving up-flows sooner than higher energy electrons. We also find that the threshold between explosive and gentle evaporation is not fixed at a given beam energy flux, but also depends strongly on the electron energy and duration of heating. Furt...

  4. Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules

    SciTech Connect (OSTI)

    Center for Energy and Innovative Technologies; NEC Laboratories America Inc.; Cardoso, Goncalo; Stadler, Michael; Bozchalui, Mohammed C.; Sharma, Ratnesh; Marnay, Chris; Barbosa-Povoa, Ana; Ferrao, Paulo

    2013-10-27T23:59:59.000Z

    The large scale penetration of electric vehicles (EVs) will introduce technical challenges to the distribution grid, but also carries the potential for vehicle-to-grid services. Namely, if available in large enough numbers, EVs can be used as a distributed energy resource (DER) and their presence can influence optimal DER investment and scheduling decisions in microgrids. In this work, a novel EV fleet aggregator model is introduced in a stochastic formulation of DER-CAM [1], an optimization tool used to address DER investment and scheduling problems. This is used to assess the impact of EV interconnections on optimal DER solutions considering uncertainty in EV driving schedules. Optimization results indicate that EVs can have a significant impact on DER investments, particularly if considering short payback periods. Furthermore, results suggest that uncertainty in driving schedules carries little significance to total energy costs, which is corroborated by results obtained using the stochastic formulation of the problem.

  5. DEVELOPMENT OF A LAMINATED DISK FOR THE SPIN TEK ROTARY MICROFILTER

    SciTech Connect (OSTI)

    Herman, D.

    2011-06-03T23:59:59.000Z

    Funded by the Department of Energy Office of Environmental Management, EM-31, the Savannah River National Laboratory (SRNL) partnered with SpinTek Filtration{trademark} to develop a filter disk that would withstand a reverse pressure or flow during operation of the rotary microfilter. The ability to withstand a reverse pressure and flow eliminates a potential accident scenario that could have resulted in damage to the filter membranes. While the original welded filter disks have been shown to withstand and reverse pressure/flow in the static condition, the filter disk design discussed in this report will allow a reverse pressure/flow while the disks are rotating. In addition, the laminated disk increases the flexibility during filter startup and cleaning operations. The new filter disk developed by SRNL and SpinTek is manufactured with a more open structure significantly reducing internal flow restrictions in the disk. The prototype was tested at the University of Maryland and demonstrated to withstand the reverse pressure due to the centrifugal action of the rotary filter. The tested water flux of the disk was demonstrated to be 1.34 gpm in a single disk test. By comparison, the water flux of the current disk was 0.49 gpm per disk during a 25 disk test. The disk also demonstrated rejection of solids by filtering a 5 wt % Strontium Carbonate slurry with a filtrate clarity of less the 1.4 Nephelometric Turbidity Units (NTU) throughout the two hour test. The Savannah River National Laboratory (SRNL) has been working with SpinTek Filtration{trademark} to adapt the rotary microfilter for radioactive service in the Department of Energy (DOE) Complex. One potential weakness is the loose nature of the membrane on the filter disks. The current disk is constructed by welding the membrane at the outer edge of the disk. The seal for the center of the membrane is accomplished by an o-ring in compression for the assembled stack. The remainder of the membrane is free floating on the disk. This construction requires that a positive pressure be applied to the rotary filter tank to prevent the membrane from rising from the disk structure and potentially contacting the filter turbulence promoter. In addition, one accident scenario is a reverse flow through the filtrate line due to mis-alignment of valves resulting in the membrane rising from the disk structure. The structural integrity of the current disk has been investigated, and shown that the disk can withstand a significant reverse pressure in a static condition. However, the disk will likely incur damage if the filter stack is rotated during a reverse pressure. The development of a laminated disk would have several significant benefits for the operation of the rotary filter including the prevention of a compromise in filter disk integrity during a reverse flow accident, increasing operational flexibility, and increasing the self cleaning ability of the filter. A laminated disk would allow the filter rotor operation prior to a positive pressure in the filter tank. This would prevent the initial dead-head of the filter and prevent the resulting initial filter cake buildup. The laminated disk would allow rotor operation with cleaning fluid, eliminating the need for a recirculation pump. Additionally, a laminated disk would allow a reverse flow of fluid through the membrane pores removing trapped particles.

  6. Optimization Online - Radio Planning of Energy-Aware Cellular ...

    E-Print Network [OSTI]

    Silvia Boiardi

    2010-11-03T23:59:59.000Z

    Nov 3, 2010 ... ... tries to limit energy consumption while guaranteeing connection quality constraints for every user and minimizes operators Capex and Opex.

  7. On Optimal Information Capture by Energy-Constrained Mobile ...

    E-Print Network [OSTI]

    2009-09-27T23:59:59.000Z

    mobile sensors often run on limited batteries. When they .... We assume that the mobile sensor runs on limited battery and is therefore energy constrained. The.

  8. Optimization and homotopy methods for the Gibbs free energy of ...

    E-Print Network [OSTI]

    Andrea Cassioli

    2011-05-31T23:59:59.000Z

    May 31, 2011 ... Abstract: In this paper we consider a mathematical model for magmatic mixtures based on the Gibbs free energy. Different reformulations of the ...

  9. Energy Security: a robust optimization approach to design a robust ...

    E-Print Network [OSTI]

    2010-06-11T23:59:59.000Z

    curity of, respectively, natural gas supply and electricity supply), the current proposals for new .... The CO2, CH4 and N2O emissions related to the energy.

  10. DOE Announces Webinars on Building Energy Optimization Tool Training,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China U.S. DepartmentEnergy ThisStandards | Department of EnergyBenchmarking,

  11. Skew and twist resistant hydrodynamic rotary shaft seal

    DOE Patents [OSTI]

    Dietle, Lannie (Sugar Land, TX); Kalsi, Manmohan Singh (Houston, TX)

    1999-01-01T23:59:59.000Z

    A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which and cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland.

  12. Skew and twist resistant hydrodynamic rotary shaft seal

    DOE Patents [OSTI]

    Dietle, L.; Kalsi, M.S.

    1999-02-23T23:59:59.000Z

    A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland. 14 figs.

  13. Optimization of Dispersed Energy Supply -Stochastic Programming with Recombining

    E-Print Network [OSTI]

    Römisch, Werner

    plant park can hardly be saved. In this context, electrical energy storage offers a possibility of storages have to be valued against market prices as established at the energy exchanges. Also the operation, seasonal, and other cyclic patterns in demand, supply, and prices, which require a valuation of storage

  14. Optimization of Oxygen Purity for Coal Conversion Energy Reduction 

    E-Print Network [OSTI]

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

    1982-01-01T23:59:59.000Z

    %. Oxygen is a major tonnage chemical which is also highly energy intensive. The current United States capacity of about 80 thousand tons per day places it in the top five of basic chemicals, and its energy requirement of 350 to 450 kilowatt hours per ton...

  15. Monitoring and optimization of energy consumption of base transceiver stations

    E-Print Network [OSTI]

    Spagnuolo, Antonio; Vetromile, Carmela; Formosi, Roberto; Lubritto, Carmine

    2015-01-01T23:59:59.000Z

    The growth and development of the mobile phone network has led to an increased demand for energy by the telecommunications sector, with a noticeable impact on the environment. Monitoring of energy consumption is a great tool for understanding how to better manage this consumption and find the best strategy to adopt in order to maximize reduction of unnecessary usage of electricity. This paper reports on a monitoring campaign performed on six Base Transceiver Stations (BSs) located central Italy, with different technology, typology and technical characteristics. The study focuses on monitoring energy consumption and environmental parameters (temperature, noise, and global radiation), linking energy consumption with the load of telephone traffic and with the air conditioning functions used to cool the transmission equipment. Moreover, using experimental data collected, it is shown, with a Monte Carlo simulation based on power saving features, how the BS monitored could save energy.

  16. Evaluation of Alternative Filter Media for the Rotary Microfilter

    SciTech Connect (OSTI)

    Poirier, M. R.; Herman, D. T.; Bhave, R.

    2011-11-09T23:59:59.000Z

    The Savannah River Site is currently developing and testing several processes to treat high level radioactive liquid waste. Each of these processes has a solid-liquid separation process that limits its throughput. Savannah River National Laboratory researchers identified and tested the rotary microfilter as a technology to increase solid-liquid separation throughput. The authors believe the rotary microfilter throughput can be improved by using a better filter membrane. Previous testing showed that asymmetric filters composed of a ceramic membrane on top of a stainless steel support produced higher filter flux than 100% stainless steel symmetric filters in crossflow filter tests. Savannah River National Laboratory and Oak Ridge National Laboratory are working together to develop asymmetric ceramic ? stainless steel composite filters and asymmetric 100% stainless steel filters to improve the throughput of the rotary microfilter. The Oak Ridge National Laboratory Inorganic Membrane Group fabricated samples of alternative filter membranes. In addition, Savannah River National Laboratory obtained samples of filter membranes from Pall, Porvair, and SpinTek. They tested these samples in a static test cell with feed slurries containing monosodium titanate and simulated sludge.

  17. Rotary union for use with ultrasonic thickness measuring probe

    DOE Patents [OSTI]

    Nachbar, H.D.

    1992-09-15T23:59:59.000Z

    A rotary union for rotatably supporting an ultrasonic probe operable to nondestructively measure the thickness of steam generator tubes to determine the amount of corrosion experienced by the tubes includes a stationary body having a bore therethrough and an outlet drain, and a fitting rotatably mounted within the upper end of the body. The fitting has a bore aligned with the bore of the body. An electrical cable positioned within a water supply tube in an annular arrangement passes through the bore of the body and the bore of the fitting. This annular arrangement, in turn, is positioned within a connector element which extends outwardly from the fitting bore and is connected to the ultrasonic probe. An elastomeric lower bushing seals the annular arrangement to the lower end of the rotary union body and an elastomeric upper bushing seals the connector element to the fitting to permit the connector element and the ultrasonic probe connected thereto to rotate with the fitting relative to the body. The lower and upper bushings permit water to be passed through the annular arrangement and into the ultrasonic probe and thereafter discharged between the annular arrangement and the connector element to the outlet drain of the rotary union body. 5 figs.

  18. Rotary rail car dumper coal-dust-suppressant experiment

    SciTech Connect (OSTI)

    Meyer, J.H.; Hereford, L.G.; Lenkevich, M.J.

    1984-10-01T23:59:59.000Z

    A rotary rail car dumper dust-suppressant experiment was performed at the PEPCO Morgantown Power Plant coal handling facility, Newburg, Maryland during the late summer and early fall of 1983. From previous observations of rotary coal car dumping, it was observed that large amounts of dust, especially for washed coal, were generated from the exposed top layer of coal in the open rail car. An overhead spray system using water and surfactant was used to examine the effectiveness of surface wetting just before dumping. High volume sampling at both the entrance and exit doorways of the dumper shed was used to determine the coal dust reduction. A total of 23 tests was performed, of which 16 tests were considered valid. All data were normalized for background, number of tons dumped and sampling time. The use of an overhead spray system can substantially suppress fugitive coal dust generated by rotary rail car dumping of coal. A water and surfactant mixture provided coal-dust-suppressant efficiencies ranging from 47% to 79% with an average of 61% for a combination of washed, mixed, and unwashed coal.

  19. A thermodynamic analysis of the rotary-vee internal combustion engine

    E-Print Network [OSTI]

    Bailey, Stephen Glenn

    1994-01-01T23:59:59.000Z

    , gives rotary engines some of their appeal. As pointed out by Wankel [7], there are literally hundreds of rotary variations that have been proposed, patented, and, to a very limited extent, produced. The Wankel engine was the first positive... that are in rotary motion. The earliest patents concerning this machine in the United States dates back to 1917, with patents related to this design issued every decade since. Development of this engine has included periods of inactivity, and has not seen any...

  20. Course Overview Pump Systems Matter Optimization | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T, Inc.'sEnergyTexas1.SpaceFluorControlsEnergy Copyin Salt |Course Overview

  1. BuildingIQ, Inc: Predictive Energy Optimization - 2015 Peer Review |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy FutureDepartment of EnergyRolandBuilding the Basic

  2. FEMP Completes 2000th Renewable Energy Optimization Screening | Department

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic Plan| Department of Energy 088:EnergyFAR27.pdfFE DOCKETFEDERALFEMAof

  3. Watershed Scale Optimization to Meet Sustainable Cellulosic Energy Crop Demands

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your DensityEnergy U.S.-China Electric Vehicle and03/02ReportWaste-to-Energy andAprilWater andWatershed Scale

  4. Advanced Vacuum Clean Equipment Optimizer Ltd AVACO | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki HomeASNAddGlobe JumpRenewables LLCATDC

  5. RADIATION SCIENCE AND TECHNOLOGY | ROTARY WING AIRCRAfT | SANITARY -ENVIRONMENTAL

    E-Print Network [OSTI]

    RADIATION SCIENCE AND TECHNOLOGY | ROTARY WING AIRCRAfT | SANITARY - ENVIRONMENTAL ENGINEERING Computational Genomics & Proteomics 2008 Wearable Intelligent Devices for Human Health and Protection 2009

  6. Optimal design and operation of energy polygeneration systems

    E-Print Network [OSTI]

    Chen, Yang, Ph. D. Massachusetts Institute of Technology. Department of Chemical Engineering

    2013-01-01T23:59:59.000Z

    Polygeneration is a concept where multiple energy products are generated in a single plant by tightly integrating multiple processes into one system. Compared to conventional single-product systems, polygeneration systems ...

  7. 1 A Centralized Optimal Energy Management System for Microgrids

    E-Print Network [OSTI]

    Daniel E. Olivares; Claudio A. Cañizares; Mehrdad Kazerani; Senior Member

    Abstract — The issue of controlled and reliable integration of distributed energy resources into microgrids and large power grids has recently gained considerable attention. The microgrid concept, which basically corresponds to the coordinated operation of a cluster of loads, distributed generators

  8. Kansas City Power & Light- Energy Optimizer Programmable Thermostat Program

    Broader source: Energy.gov [DOE]

    Kansas City Power and Light (KCP&L) offers a free programmable thermostat and free installation to qualifying customers to manage energy usage. Only residential and small commercial customers...

  9. Kansas City Power and Light- Energy Optimizer Programmable Thermostat Program

    Broader source: Energy.gov [DOE]

    Kansas City Power and Light (KCP&L) offers a free Honeywell programmable thermostat, worth $300, and free installation to qualifying customers to manage energy usage. Only residential and small...

  10. Optimization of Oxygen Purity for Coal Conversion Energy Reduction

    E-Print Network [OSTI]

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

    1982-01-01T23:59:59.000Z

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

  11. Optimized Alumina Coagulants for Water Purification - Energy Innovation

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomass and Biofuels Biomass and Biofuels Find MoreRod

  12. Optimal Integration of Intermittent Energy Sources Using Distributed Multi-Step Optimization

    E-Print Network [OSTI]

    Li, Xin

    --The integration of renewable energy sources such as wind and solar into the electric power grid is a coveted yet such as wind power, but these sources are intermittent and non-dispatchable. An- other challenge is addressed as well, as storage also allows balancing the intermittent power output from the renewable

  13. Prospects for Combining Energy and Environmental Objectives in Hydropower Optimization Brennan T. Smith and Henriette I. Jager

    E-Print Network [OSTI]

    Jager, Henriette I.

    1 Prospects for Combining Energy and Environmental Objectives in Hydropower Optimization Brennan T, we review studies that derived rules for hydropower operation by solving optimization problems driven be compatible with hydropower optimization. Given the increasing value placed on the ecological sustainability

  14. TESTING OF A ROTARY MICROFILTER TO SUPPORT HANFORD APPLICATIONS

    SciTech Connect (OSTI)

    Poirier, M; David Herman, D; David Stefanko, D; Samuel Fink, S

    2008-06-26T23:59:59.000Z

    Savannah River National Laboratory (SRNL) researchers are investigating and developing a rotary microfilter for solid-liquid separation applications at the Savannah River Site (SRS). Because of the success of that work, the Hanford Site is evaluating the use of the rotary microfilter for its Supplemental Pretreatment process. The authors performed rotary filter testing with a full-scale, 25-disk unit with 0.5 {micro} filter media manufactured by Pall Corporation using a Hanford AN-105 simulant at solids loadings of 0.06, 0.29, and 1.29 wt%. The conclusions from this testing are: (1) The filter flux at 0.06 wt% solids reached a near constant value at an average of 0.26 gpm/ft{sup 2} (6.25 gpm total). (2) The filter flux at 0.29 wt% solids reached a near constant value at an average of 0.17 gpm/ft{sup 2} (4 gpm total). (3) The filter flux at 1.29 wt% solids reached a near constant value at an average of 0.10 gpm/ft{sup 2} (2.4 gpm total). (4) Because of differences in solids loadings, a direct comparison between crossflow filter flux and rotary filter flux is not possible. The data show the rotary filter produces a higher flux than the crossflow filter, but the improvement is not as large as seen in previous testing. (5) Filtrate turbidity measured < 4 NTU in all samples collected. (6) During production, the filter should be rinsed with filtrate or dilute caustic and drained prior to an extended shutdown to prevent the formation of a layer of settled solids on top of the filter disks. (7) Inspection of the seal faces after {approx} 140 hours of operation showed an expected amount of initial wear, no passing of process fluid through the seal faces, and very little change in the air channeling grooves on the stationary face. (8) Some polishing was observed at the bottom of the shaft bushing. The authors recommend improving the shaft bushing by holding it in place with a locking ring and incorporated grooves to provide additional cooling. (9) The authors recommend that CH2MHill Hanford test other pore size media to determine the optimum pore size for Hanford waste.

  15. Control and Room Temperature Optimization of Energy Efficient Buildings

    SciTech Connect (OSTI)

    Djouadi, Seddik M [ORNL] [ORNL; Kuruganti, Phani Teja [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    The building sector consumes a large part of the energy used in the United States and is responsible for nearly 40% of greenhouse gas emissions. It is therefore economically and environmentally important to reduce the building energy consumption to realize massive energy savings. In this paper, a method to control room temperature in buildings is proposed. The approach is based on a distributed parameter model represented by a three dimensional (3D) heat equation in a room with heater/cooler located at ceiling. The latter is resolved using finite element methods, and results in a model for room temperature with thousands of states. The latter is not amenable to control design. A reduced order model of only few states is then derived using Proper Orthogonal Decomposition (POD). A Linear Quadratic Regulator (LQR) is computed based on the reduced model, and applied to the full order model to control room temperature.

  16. Building America Webinar: Building Energy Optimization (BEopt) Software

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future ofHydronic HeatingManagementCrawlspaces thatTool |

  17. Building America Webinar: Building Energy Optimization (BEopt) Software

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future ofHydronic HeatingManagementCrawlspaces thatTool |Tool |

  18. Building Energy Optimization Analysis Method (BEopt) - Building America Top

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: Theof Energy Future ofHydronicBuildingDepartmentDavidDepartment

  19. Flex Fuel Optimized SI and HCCI Engine | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2 DOE Hydrogen and Fuel Cells Program and

  20. Flex Fuel Optimized SI and HCCI Engine | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2 DOE Hydrogen and Fuel Cells Program and1 DOE

  1. Flex Fuel Optimized SI and HCCI Engine | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2 DOE Hydrogen and Fuel Cells Program and1 DOE0

  2. Forecourt and Gas Infrastructure Optimization | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport inEnergy0.pdf Flash2010-60.pdf2 DOE Hydrogen andMeetingonup

  3. Central Networks Low Carbon Hub Optimizing renewable energy resources in

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.Telluric Survey asWest, NewCenterville,Lincolnshire (Smart Grid

  4. Optimization of Storage vs. Compression Capacity | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked QuestionsDepartmentGas and Oil ResearchEnergyOnHSSOpti-MN Impact

  5. Sandia Energy - Optima: Co-Optimization of Fuels and Engines

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear PressLaboratory Fellows JerryNuclear

  6. Optimizing Low Temperature Diesel Combustion | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment ofOil'sEnergy8 * OctoberDepartment ofProjects

  7. Sensor Placement + Optimization Software (SPOT) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f < RAPID‎ |Rippey JumpAir JumpCalifornia |SemikronSener SASGPLSensor

  8. ENERGY AND WATER OPTIMIZATION IN BIOFUEL PLANTS Ignacio E. Grossmann*

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    in the production of bioethanol from corn and switchgrass. We show that in order for these manufacturing processes in bioethanol plants can be significantly improved. Specifically, under some circumstances energy can even that can be implemented in the short-term [5]. Thus, bioethanol and biodiesel have become the most

  9. Optimal Routing and Scheduling in Multihop Wireless Renewable Energy Networks

    E-Print Network [OSTI]

    Sarkar, Saswati

    to solar panels. In addition to solar, energy harvested from the wind through the use of micro-turbines [3 harvested from renewable sources could range from the order of tens of watts as with solar panels, to milli constraints. For example, a solar panel (with several square feet of panel area) may be more appropriate

  10. Process Control on Workplace Level - User Comfort Energy Optimalization

    E-Print Network [OSTI]

    Verhaart, J.; Zeiler, W.; Boxem, G.

    2013-01-01T23:59:59.000Z

    . But to really reduce energy load of the building, the challenge of providing the best comfort for all people present in an office is a combined effort between ICS and building climate installation. The system should cooperate in a multi-agent system within a...

  11. Path Placement Optimization of Manipulators Based on Energy Consumption

    E-Print Network [OSTI]

    Boyer, Edmond

    utilisant la consommation ´energ´etique comme crit`ere. Ce travail propose une mthodologie pour d´es: Placement de trajectoires, Consommation ´energ´etique, Optimisation, Manipu- lateur parall`eles. hal to perform a given operation more efficiently with respect to the energy consumed. The path placement problem

  12. Light incoherence theory revisited by Heisenberg time-energy uncertainty challenges solar cell optimization

    E-Print Network [OSTI]

    Herman, Aline; Deparis, Olivier

    2014-01-01T23:59:59.000Z

    Optimization of the efficiency of solar cells is a major challenge for renewable energies. Using a rigorous theoretical approach, we show that the photocurrent generated in a solar cell depends strongly on the degree of coherence of the incident light. In accordance with Heisenberg uncertainty time-energy, incoherent light at photons of carrier energy lower than the active material bandgap can be absorbed whereas coherent light at the same carrier energy cannot. We identify cases where incoherence does enhance efficiency. This result has a dramatical impact on the way solar cells must be optimized regarding sunlight. As an illustration, surface-corrugated GaAs and c-Si thin-film solar cells are considered.

  13. DEVELOPMENT AND DEPLOYMENT OF SHOTCRETE REFRACTORIES FOR ALUMINUM ROTARY FURNACE APPLICATION

    SciTech Connect (OSTI)

    Hemrick, James Gordon [ORNL; Rodrigues-Schroer, Angela [Minteq International, Inc.; Colavito, [Minteq International, Inc.; Smith, Jeffrey D [ORNL; O'Hara, Kelley [University of Missouri, Rolla

    2013-01-01T23:59:59.000Z

    Work was performed by Oak Ridge National Laboratory (ORNL) in the United States, in collaboration with the industrial refractory manufacturer Minteq International, Inc. (MINTEQ), academic research partner Missouri University of Science and Technology (MS&T) and end users to employ novel refractory systems and techniques to reduce energy consumption of refractory lined vessels found in the aluminum industry. The project aim was to address factors that limit the applicability of currently available refractory materials such as chemical attack, mechanical degradation, use temperature, and installation or repair issues. To this end, as part of the overall project, shotcretable refractory compositions were developed based on alumino-silicate based structures utilizing new aggregate materials, bond systems, protective coatings, and phase formation techniques for use in rotary dross furnaces. Additionally a shotcretable high strength insulating back-up lining material was also developed for use in this and other applications. Development efforts, materials validation, and results from industrial validation trials are discussed.

  14. Energy optimization of water and wastewater management for municipal and industrial applications conference

    SciTech Connect (OSTI)

    Not Available

    1980-08-01T23:59:59.000Z

    These proceedings document the presentations given at the Energy Optimization of Water and Wastewater Management for Municipal and Industrial Applications Conference, sponsored by the Department of Energy (DOE). The conference was organized and coordinated by Argonne National Laboratory. The conference focused on energy use and conservation in water and wastewater. The General Session also reflects DOE's commitment to the support and development of waste and wastewater systems that are environmentally acceptable. The conference proceedings are divided into two volumes. Volume 1 contains the General Session and Sessions 1 to 5. Volume 2 covers Sessions 6 to 12. Separate abstracts are prepared for each item within the scope of the Energy Data Base.

  15. Energy optimization of water and wastewater management for municipal and industrial applications conference

    SciTech Connect (OSTI)

    Not Available

    1980-08-01T23:59:59.000Z

    These proceedings document the presentations given at the Energy Optimization of Water and Wastewater Management for Municipal and Industrial Applications, Conference, sponsored by the Department of Energy (DOE). The conference was organized and coordinated by Argonne National Laboratory. The conference focused on energy use on conservation in water and wastewater. The General Session also reflects DOE's commitment to the support and development of waste and wastewater systems that are environmentally acceptable. The conference proceedings are divided into two volumes. Volume 1 contains the General Session and Sessions 1 to 5. Volume 2 covers Sessions 6 to 12. Separate abstracts are prepared for each item within the scope of the Energy Data Base.

  16. An Optimal Wake-Up Scheduling Algorithm for Minimizing Energy Consumption while Limiting

    E-Print Network [OSTI]

    Cohen, Reuven

    are not within each other's transmission range. However, in large mesh networks, global synchronization1 An Optimal Wake-Up Scheduling Algorithm for Minimizing Energy Consumption while Limiting Maximum Delay in a Mesh Sensor Network Reuven Cohen and Boris Kapchits Department of Computer Science Technion

  17. Optimal operation of a Petlyuk Distillation Column: Energy Savings by Over-fractionation

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Optimal operation of a Petlyuk Distillation Column: Energy Savings by Over-fractionation · The Petlyuk distillation column, see Figure 1(a), with a pre-fractionator (C1) and a main column (C21 and C22) N-7465 Trondheim, Norway Abstract This work shows the unexpected result that over-fractionating one

  18. Understanding optimal data gathering in the energy and latency domains of a wireless sensor network

    E-Print Network [OSTI]

    Melodia, Tommaso

    of city districts. In typical applications, sensors monitor their neighboring area, extract informationUnderstanding optimal data gathering in the energy and latency domains of a wireless sensor network Telekommunikation Wien (ftw.), Donau City Strae 1, 1220 Wien, Austria Received 14 October 2005; received in revised

  19. OPTIMIZATION WITH ENERGY MANAGEMENT OF PV BATTERY STAND-ALONE SYSTEMS OVER THE ENTIRE LIFE CYCLE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of both the installed PV power and storage capacity (lead-acid battery technology for purposes). Keywords: Battery storage and control, Lifetime simulation, PV system. 1. INTRODUCTION Given the sizableOPTIMIZATION WITH ENERGY MANAGEMENT OF PV BATTERY STAND-ALONE SYSTEMS OVER THE ENTIRE LIFE CYCLE

  20. An Evolutionary Multi-objective Approach for Speed Tuning Optimization with Energy Saving

    E-Print Network [OSTI]

    management, Optimization I. INTRODUCTION For recent years, the concern due to pollution and global warming point of view. Indeed, global energy saving is becoming the new challenge of the transportation systems including railway. Works have been led for analytically computing ST solu- tions according to several levels

  1. Energy Efficient DSL via Heterogeneous Sleeping States: Optimization Structures and Operation

    E-Print Network [OSTI]

    transitions is lower both in energy and time. The power consumption at L3 is zero but the switching cost for LEnergy Efficient DSL via Heterogeneous Sleeping States: Optimization Structures and Operation University, USA, 2 ESAT-SCD, KU Leuven, Belgium, 3 ASSIA, Inc., USA Abstract--Switching off a DSL line

  2. Fast Energy Optimal Routing in Radio Networks Using Geometric Data Structures

    E-Print Network [OSTI]

    Beier, René

    often only limited energy reserves from batteries or power from solar panels, a prime optimization such algorithms for the important case where the transmission cost between two nodes is the square of the problem. We also outline generalizations for the case of limited ranges, di#11;erent cost functions

  3. PASI 2011: Process Modeling and Optimization for Energy and Sustainability Mineral Process Design for

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    in Asia. Asia will have a strong impact on the global trends in key metals consumption Takashi NishiyamaPASI 2011 PASI 2011: Process Modeling and Optimization for Energy and Sustainability Mineral;Balance between global consumption and the available production Motivation PSE at CICITEM Models

  4. Multiobjective Optimization Techniques: A Study Of The Energy Minimization Method And Its Application To The

    E-Print Network [OSTI]

    Coello, Carlos A. Coello

    Multiobjective Optimization Techniques: A Study Of The Energy Minimization Method And Its, Rio de Janeiro, RJ, Brazil, 22453-900 Rio de Janeiro, RJ, Brazil, 22453-900 +55-21-529-9433 +55@brain.jpl.nasa.gov Rua Marques de S. Vicente, 225, Gavea, Rio de Janeiro, RJ, Brazil, 22453-900 +55-21-529-9445 marley

  5. A parametric building energy cost optimization tool based on a genetic algorithm

    E-Print Network [OSTI]

    Tan, Xiaowei

    2007-09-17T23:59:59.000Z

    Sheng-Jen Hsieh Donald R. Smith Coordinator, College of Engineering, N. K. Anand May 2006 Major Subject: Engineering iii ABSTRACT A Parametric Building Energy Cost Optimization Tool Based on a Genetic Algorithm. (May 2006) Xiaowei Tan, B.......................................................................................5 III.1. Project Origin.............................................................................................5 III.2. Applicable Models .....................................................................................7 III.3. Input...

  6. Experimental Results on Advanced Rotary Desiccant Dehumidifiers

    E-Print Network [OSTI]

    Barathan, D.; Parsons, J. M.; MaClaine-Cross, I.

    1986-01-01T23:59:59.000Z

    of Nusselt number with Graetz number and theoretical Nusselt number limit compared to typical time constant for heat and/or mass transfer), the transfer effectiveness is gov- erned by the effective capacity of the matrix and is insignificantly affected... on developing high-performance, low-pressure drop dehumidifiers. As part of the the Department of Energy's Solar Buildings Research and Development Program SERI has been making fundamental heat and mass r , , , , , , , , boo 10 40 70 100 Dry bulb...

  7. Control and Optimization Meet the Smart Power Grid - Scheduling of Power Demands for Optimal Energy Management

    E-Print Network [OSTI]

    Koutsopoulos, Iordanis

    2010-01-01T23:59:59.000Z

    The smart power grid aims at harnessing information and communication technologies to enhance reliability and enforce sensible use of energy. Its realization is geared by the fundamental goal of effective management of demand load. In this work, we envision a scenario with real-time communication between the operator and consumers. The grid operator controller receives requests for power demands from consumers, with different power requirement, duration, and a deadline by which it is to be completed. The objective is to devise a power demand task scheduling policy that minimizes the grid operational cost over a time horizon. The operational cost is a convex function of instantaneous power consumption and reflects the fact that each additional unit of power needed to serve demands is more expensive as demand load increases.First, we study the off-line demand scheduling problem, where parameters are fixed and known. Next, we devise a stochastic model for the case when demands are generated continually and sched...

  8. Energy Optimization Management in a Petrochemical Plant: A Self-Development Case

    E-Print Network [OSTI]

    Magalhaes, E.

    2014-01-01T23:59:59.000Z

    Eduardo Magalhães| may 21, 2014 Energy Optimization Management in a Petrochemical Plant: A Self-Development Case ESL-IE-14-05-26 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 EXTRACTION... Feedstocks 1ST GENERATION Basic Petrochemicals 2ND GENERATION Thermoplastic Resins 3RD GENERATION Plastics Manufacturers PE PP PVC COMPETITIVE INTEGRATION PETROCHEMICAL INDUSTRY 2 2 ETHYLENE PROPYLENE CHLORINE SODA ALKALI NAPHTHA NATURAL GAS ETHANOL SALT ESL...

  9. ExxonMobil Baton Rouge Chemicals: Energy Optimization in a Turndown Environment

    E-Print Network [OSTI]

    Geier, E.; Panaev, L.; Waite, R.; Eiklor, L.

    events, demographic changes, and other factors discussed herein (and in Item 1 of ExxonMobil?s latest report on Form 10-K). This material is not to be reproduced without the permission of Exxon Mobil Corporation. ExxonMobil Baton Rouge Chemicals...: Energy Optimization in a Turndown Environment 2010 Industrial Energy Technology Conference New Orleans, Louisiana May 21, 2010 2 Overview ? Scene Set ? 2009 ExxonMobil Baton Rouge Chemicals ACC Awards ? Exceptional Merit 1: Elastomers Block...

  10. Optimal Sizing of Energy Storage and Photovoltaic Power Systems for Demand Charge Mitigation (Poster)

    SciTech Connect (OSTI)

    Neubauer, J.; Simpson, M.

    2013-10-01T23:59:59.000Z

    Commercial facility utility bills are often a strong function of demand charges -- a fee proportional to peak power demand rather than total energy consumed. In some instances, demand charges can constitute more than 50% of a commercial customer's monthly electricity cost. While installation of behind-the-meter solar power generation decreases energy costs, its variability makes it likely to leave the peak load -- and thereby demand charges -- unaffected. This then makes demand charges an even larger fraction of remaining electricity costs. Adding controllable behind-the-meter energy storage can more predictably affect building peak demand, thus reducing electricity costs. Due to the high cost of energy storage technology, the size and operation of an energy storage system providing demand charge management (DCM) service must be optimized to yield a positive return on investment (ROI). The peak demand reduction achievable with an energy storage system depends heavily on a facility's load profile, so the optimal configuration will be specific to both the customer and the amount of installed solar power capacity. We explore the sensitivity of DCM value to the power and energy levels of installed solar power and energy storage systems. An optimal peak load reduction control algorithm for energy storage systems will be introduced and applied to historic solar power data and meter load data from multiple facilities for a broad range of energy storage system configurations. For each scenario, the peak load reduction and electricity cost savings will be computed. From this, we will identify a favorable energy storage system configuration that maximizes ROI.

  11. Power Compensation Effect of an Adjustable-Speed Rotary Condenser with a Flywheel for a Large Capacity Magnet Power Supply

    E-Print Network [OSTI]

    Akagi, H

    1999-01-01T23:59:59.000Z

    Power Compensation Effect of an Adjustable-Speed Rotary Condenser with a Flywheel for a Large Capacity Magnet Power Supply

  12. A Simple Optimal Power Flow Model with Energy Storage K. Mani Chandy, Steven H. Low, Ufuk Topcu and Huan Xu

    E-Print Network [OSTI]

    Xu , Huan

    A Simple Optimal Power Flow Model with Energy Storage K. Mani Chandy, Steven H. Low, Ufuk Topcu and Huan Xu Abstract-- The integration of renewable energy generation, such as wind power how storage allows optimization of power generation across multiple time periods. The model

  13. Course Overview Pump Systems Matter Optimization | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613PortsmouthBartlesvilleAbout » Contact Us ContactPractices inCostsCourse Overview Pump

  14. DOE Announces Webinars on Building Energy Optimization Tool Training,

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube| Department of Energy -State Efficiency,ofofofRFI

  15. Optimization of Energy Transfer Processes in Photosynthetic Systems |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeeding access toTest and

  16. Accepted Manuscript A wall heat transfer correlation for the baffled-rotary kilns with secondary air

    E-Print Network [OSTI]

    Boyer, Edmond

    Accepted Manuscript A wall heat transfer correlation for the baffled-rotary kilns with secondary Date: 22 January 2014 Please cite this article as: L.G. Lauredan, H. Florian, D. Jean, A wall heat;1 A wall heat transfer correlation for the baffled- rotary kilns with secondary air flow and recycled

  17. How Fo-ATPase generates rotary torque George Oster, Hongyun Wang and Michael Grabe

    E-Print Network [OSTI]

    Oster, George

    of California, Berkeley, CA 94720-3112, USA The F-ATPases synthesize ATP using a transmembrane ionmotive force to a rotary torque in the transmem- brane Fo portion. This torque is communicated from Fo to the F1 portion to Boyer's binding change mechanism. Here we explain the principle by which an IMF generates this rotary

  18. Skew And Twist Resistant Hydrodynamic Rotary Shaft Seal

    DOE Patents [OSTI]

    Dietle, Lannie (Sugar Land, TX); Kalsi, Manmohan Singh (Houston, TX)

    2000-03-14T23:59:59.000Z

    A hydrodynamically lubricated squeeze packing type rotary shaft seal suitable for lubricant retention and environmental exclusion which incorporates one or more resilient protuberances which and cooperate with the gland walls to hold the seal straight in its installation groove in unpressurized and low pressure lubricant retention applications thereby preventing skew-induced wear caused by impingement of abrasive contaminants present in the environment, and which also serve as radial bearings to prevent tipping of the seal within its installation gland. Compared to prior art, this invention provides a dramatic reduction of seal and shaft wear in abrasive environments and provides a significant increase in seal life.

  19. System and method for cooling a superconducting rotary machine

    DOE Patents [OSTI]

    Ackermann, Robert Adolf (Schenectady, NY); Laskaris, Evangelos Trifon (Schenectady, NY); Huang, Xianrui (Clifton Park, NY); Bray, James William (Niskayuna, NY)

    2011-08-09T23:59:59.000Z

    A system for cooling a superconducting rotary machine includes a plurality of sealed siphon tubes disposed in balanced locations around a rotor adjacent to a superconducting coil. Each of the sealed siphon tubes includes a tubular body and a heat transfer medium disposed in the tubular body that undergoes a phase change during operation of the machine to extract heat from the superconducting coil. A siphon heat exchanger is thermally coupled to the siphon tubes for extracting heat from the siphon tubes during operation of the machine.

  20. Intelligent Building Energy Information and Control Systems for Low-Energy Operations and Optimal Demand Response

    E-Print Network [OSTI]

    Piette, Mary Ann

    2014-01-01T23:59:59.000Z

    As  we  develop low?energy buildings, the need for models Building Energy Information and Control Systems for Low-Building  Energy  Information  and  Control  Systems  for  Low­

  1. Formalism for Simulation-based Optimization of Measurement Errors in High Energy Physics

    E-Print Network [OSTI]

    Yuehong Xie

    2009-04-29T23:59:59.000Z

    Miminizing errors of the physical parameters of interest should be the ultimate goal of any event selection optimization in high energy physics data analysis involving parameter determination. Quick and reliable error estimation is a crucial ingredient for realizing this goal. In this paper we derive a formalism for direct evaluation of measurement errors using the signal probability density function and large fully simulated signal and background samples without need for data fitting and background modelling. We illustrate the elegance of the formalism in the case of event selection optimization for CP violation measurement in B decays. The implication of this formalism on choosing event variables for data analysis is discussed.

  2. Optimal energy-harvesting cycles for load-driven dielectric generators in plane strain

    E-Print Network [OSTI]

    R. Springhetti; E. Bortot; G. deBotton; M. Gei

    2014-03-13T23:59:59.000Z

    The performances of energy harvesting generators based on dielectric elastomers are investigated. The configuration is of a thin dielectric film coated by stretchable electrodes at both sides. The film is first stretched, then charged and subsequently, afterwards it is released, and finally the charge is harvested at a higher electric potential. The amount of energy extracted by this cycle is bounded by the electric breakdown and the ultimate stretch ratio of the film as well as by structural instabilities due to loss of tension. To identify the optimal cycle that complies with these limits we formulate a constraint optimization problem and solve it with a dedicated solver for two typical classes of elastic dielectrics. As anticipated, we find that the performance of the generator depends critically on the ultimate stretch ratio of the film. However, more surprising is our finding of a universal limit on the dielectric strength of the film beyond which the optimal cycle is independent of this parameter. Thus, we reveal that, regardless of how large the dielectric strength of the material is, there is an upper bound on the amount of harvested energy that depends only on the ultimate stretch ratio. We conclude the work with detailed calculations of the optimal cycles for two commercially available elastic dielectrics.

  3. Utility Accrual Real-Time Scheduling with Energy Bounds In this paper, we consider timeliness and energy optimization in battery-powered, dynamic

    E-Print Network [OSTI]

    Ravindran, Binoy

    . An important technique used for optimizing the energy consumption of real-time embedded systems is dynamic in the physical world). Further, they are energy-critical, as they must operate on battery, with finite energy and minimizing the system's energy consumption, and not just the CPU's energy consumption. Moreover, such systems

  4. Influence and optimization of the electrodes position in a piezoelectric energy harvesting flag

    E-Print Network [OSTI]

    Piñeirua, Miguel; Michelin, Sébastien

    2015-01-01T23:59:59.000Z

    Fluttering piezoelectric plates may harvest energy from a fluid flow by converting the plate's mechanical deformation into electric energy in an output circuit. This work focuses on the influence of the arrangement of the piezoelectric electrodes along the plate's surface on the energy harvesting efficiency of the system, using a combination of experiments and numerical simulations. A weakly non-linear model of a plate in axial flow, equipped with a discrete number of piezoelectric patches is derived and confronted to experimental results. Numerical simulations are then used to optimize the position and dimensions of the piezoelectric electrodes. These optimal configurations can be understood physically in the limit of small and large electromechanical coupling.

  5. Decentralized Delay Optimal Control for Interference Networks with Limited Renewable Energy Storage

    E-Print Network [OSTI]

    Huang, Huang

    2012-01-01T23:59:59.000Z

    In this paper, we consider delay minimization for interference networks with renewable energy source, where the transmission power of a node comes from both the conventional utility power (AC power) and the renewable energy source. We assume the transmission power of each node is a function of the local channel state, local data queue state and local energy queue state only. In turn, we consider two delay optimization formulations, namely the decentralized partially observable Markov decision process (DEC-POMDP) and Non-cooperative partially observable stochastic game (POSG). In DEC-POMDP formulation, we derive a decentralized online learning algorithm to determine the control actions and Lagrangian multipliers (LMs) simultaneously, based on the policy gradient approach. Under some mild technical conditions, the proposed decentralized policy gradient algorithm converges almost surely to a local optimal solution. On the other hand, in the non-cooperative POSG formulation, the transmitter nodes are non-cooperat...

  6. Sum-Rate Optimal Power Policies for Energy Harvesting Transmitters in an Interference Channel

    E-Print Network [OSTI]

    Tutuncuoglu, Kaya

    2011-01-01T23:59:59.000Z

    This paper considers a two-user Gaussian interference channel with energy harvesting transmitters. Different than conventional battery powered wireless nodes, energy harvesting transmitters have to adapt transmission to availability of energy at a particular instant. In this setting, the optimal power allocation problem to maximize sum throughput within a given deadline is formulated. The convergence of the proposed iterative coordinate descent method for the problem is proved and the short-term throughput maximizing offline power allocation policy is found. Examples for interference regions with known sum capacities are given with directional water-filling interpretations when possible. Next, stochastic data arrivals are addressed. Finally online and/or distributed near-optimal policies are proposed. Performance of the proposed algorithms are demonstrated through simulations.

  7. Efficient energy transfer in light-harvesting systems, I: optimal temperature, reorganization energy, and spatial-temporal correlations

    E-Print Network [OSTI]

    Jianlan Wu; Fan Liu; Young Shen; Jianshu Cao; Robert J. Silbey

    2010-09-16T23:59:59.000Z

    Understanding the mechanisms of efficient and robust energy transfer in light-harvesting systems provides new insights for the optimal design of artificial systems. In this paper, we use the Fenna-Matthews-Olson (FMO) protein complex and phycocyanin 645 (PC 645) to explore the general dependence on physical parameters that help maximize the efficiency and maintain its stability. With the Haken-Strobl model, the maximal energy transfer efficiency (ETE) is achieved under an intermediate optimal value of dephasing rate. To avoid the infinite temperature assumption in the Haken-Strobl model and the failure of the Redfield equation in predicting the Forster rate behavior, we use the generalized Bloch-Redfield (GBR) equation approach to correctly describe dissipative exciton dynamics and find that maximal ETE can be achieved under various physical conditions, including temperature, reorganization energy, and spatial-temporal correlations in noise. We also identify regimes of reorganization energy where the ETE changes monotonically with temperature or spatial correlation and therefore cannot be optimized with respect to these two variables.

  8. Multiphase Nano-Composite Coatings for Achieving Energy Optimization

    SciTech Connect (OSTI)

    Dr. Jose Nainaparampil

    2012-03-26T23:59:59.000Z

    UES Inc. and ANL teamed in this work to develop novel coating systems for the protection of surfaces from thermal degradation mainly in two applications; Machining and Die casting. These coatings were specifically designed for the purpose by incorporating required material phases and the overall architecture, which led to reduce the energy usage and increase efficiency of the operations. Following the UES/ANL'Â?s feasibility work, the coatings were developed utilizing High power impulse magnetron sputtering (HiPMS) and Large area filtered arc deposition (LAFAD) techniques. Toughness, hardness and oxidation resistance: contrasting qualities have been mixed in the right proportion to attain the suitable material characteristic for the cause. Hafnium diboride (HfB2) based materials provided such a system and its properties were tamed to attain the right combination of toughness and hardness by working on the microstructure and architecture of coatings. An effective interfacing material (graded concentrations of topcoat) was also achieved in this work to provide the required adhesion between the substrate and the coating. Combination of an appropriate bond coat and a functional top coat provided the present thermal degradation resistant coating for cutting tools and die-casting applications. Laboratory level performance tests and industrial level application tests by partner companies (Beta Site Testing) were used for the development of these coatings.

  9. Analysis of Energy Savings by Painting a Rotary Kiln Surface

    E-Print Network [OSTI]

    Li, X.; Wang, T.; Tonti, R. T.; Edwards, L.

    2007-01-01T23:59:59.000Z

    of the paint because good insulation will increase the metal shell temperature. Too much temperature increase could result in structural problems induced by differential thermal expansion between the shell metal and the refractory bricks. A detailed heat...

  10. Optimal use of time dependent probability density data to extract potential energy surfaces

    E-Print Network [OSTI]

    Lukas Kurtz; Herschel Rabitz; Regina de Vivie-Riedle

    2001-11-09T23:59:59.000Z

    A novel algorithm was recently presented to utilize emerging time dependent probability density data to extract molecular potential energy surfaces. This paper builds on the previous work and seeks to enhance the capabilities of the extraction algorithm: An improved method of removing the generally ill-posed nature of the inverse problem is introduced via an extended Tikhonov regularization and methods for choosing the optimal regularization parameters are discussed. Several ways to incorporate multiple data sets are investigated, including the means to optimally combine data from many experiments exploring different portions of the potential. Results are presented on the stability of the inversion procedure, including the optimal combination scheme, under the influence of data noise. The method is applied to the simulated inversion of a double well system.

  11. The optimization problem Genetic Algorithm

    E-Print Network [OSTI]

    Giménez, Domingo

    The optimization problem Genetic Algorithm Particle Swarm Optimization Experimental results for time-power optimization META, October 27-31, 2014 1 / 25 #12;The optimization problem Genetic Algorithm Particle Swarm Optimization Experimental results Conclusions Time and energy optimization Traditionally

  12. Optimal Deployment of Thermal Energy Storage under Diverse Economic and Climate Conditions

    SciTech Connect (OSTI)

    DeForest, Nicolas; Mendes, Goncalo; Stadler, Michael; Feng, Wei; Lai, Judy; Marnay, Chris

    2014-04-15T23:59:59.000Z

    This paper presents an investigation of the economic benefit of thermal energy storage (TES) for cooling, across a range of economic and climate conditions. Chilled water TES systems are simulated for a large office building in four distinct locations, Miami in the U.S.; Lisbon, Portugal; Shanghai, China; and Mumbai, India. Optimal system size and operating schedules are determined using the optimization model DER-CAM, such that total cost, including electricity and amortized capital costs are minimized. The economic impacts of each optimized TES system is then compared to systems sized using a simple heuristic method, which bases system size as fraction (50percent and 100percent) of total on-peak summer cooling loads. Results indicate that TES systems of all sizes can be effective in reducing annual electricity costs (5percent-15percent) and peak electricity consumption (13percent-33percent). The investigation also indentifies a number of criteria which drive TES investment, including low capital costs, electricity tariffs with high power demand charges and prolonged cooling seasons. In locations where these drivers clearly exist, the heuristically sized systems capture much of the value of optimally sized systems; between 60percent and 100percent in terms of net present value. However, in instances where these drivers are less pronounced, the heuristic tends to oversize systems, and optimization becomes crucial to ensure economically beneficial deployment of TES, increasing the net present value of heuristically sized systems by as much as 10 times in some instances.

  13. Optimal Placement of Energy Storage in the Grid Subhonmesh Bose, Dennice F. Gayme, Ufuk Topcu, and K. Mani Chandy

    E-Print Network [OSTI]

    Gayme, Dennice

    Optimal Placement of Energy Storage in the Grid Subhonmesh Bose, Dennice F. Gayme, Ufuk Topcu with these sources has led to a great deal of research into grid level energy storage [1], [2]. Several authors have studied the benefits of energy storage in both the conventional [3] and renewable energy settings [2], [4

  14. Plant Wide Assessment of Energy Usage Utilizing SitEModelling as a Tool for Optimizing Energy Consumption

    SciTech Connect (OSTI)

    Ralf Janowsky, Ph.D.; Tracey Mole, Ph.D.

    2007-12-31T23:59:59.000Z

    The Evonik Degussa Corporation is the global market leader in the specialty chemicals industry. Innovative products and system solutions make an indispensable contribution to our customers' success. We refer to this as "creating essentials". In fiscal 2004, Degussa's 45,000 employees worldwide generated sales of 11.2 billion euros and operating profits (EBIT) of 965 million euros. Evonik Degussa Corporation has performed a plant wide energy usage assessment at the Mapleton, Illinois facility, which consumed 1,182,330 MMBTU in 2003. The purpose of this study was to identify opportunities for improvement regarding the plant’s utility requirements specific to their operation. The production is based mainly on natural gas usage for steam, process heating and hydrogen production. The current high price for natural gas in the US is not very competitive compared to other countries. Therefore, all efforts must be taken to minimize the utility consumption in order to maximize market position and minimize fixed cost increases due to the rising costs of energy. The main objective of this plant wide assessment was to use a methodology called Site Energy Modelling (SitE Modelling) to identify areas of potential improvement for energy savings, either in implementing a single process change or in changing the way different processes interact with each other. The overall goal was to achieve energy savings of more than 10% compared to the 2003 energy figures of the Mapleton site. The final savings breakdown is provided below: - 4.1% savings for steam generation and delivery These savings were accomplished through better control schemes, more constant and optimized loading of the boilers and increased boiler efficiency through an advanced control schemes. - 1.6% savings for plant chemical processing These saving were accomplished through optimized processing heating efficiency and batch recipes, as well as an optimized production schedule to help equalize the boiler load (e.g. steam consumption).

  15. 1742 IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS--I: REGULAR PAPERS, VOL. 55, NO. 6, JULY 2008 An Adaptive System for Optimal Solar Energy

    E-Print Network [OSTI]

    Alippi, Cesare

    An Adaptive System for Optimal Solar Energy Harvesting in Wireless Sensor Network Nodes Cesare Alippi, Fellow, with solar energy being the most inter- esting one in outdoor deployments due to its relatively high power transferring circuit for optimally conveying solar energy into rechargeable batteries even in not optimal

  16. Fermilab Central Computing Facility: Energy conservation report and mechanical systems design optimization and cost analysis study

    SciTech Connect (OSTI)

    Krstulovich, S.F.

    1986-11-12T23:59:59.000Z

    This report is developed as part of the Fermilab Central Computing Facility Project Title II Design Documentation Update under the provisions of DOE Document 6430.1, Chapter XIII-21, Section 14, paragraph a. As such, it concentrates primarily on HVAC mechanical systems design optimization and cost analysis and should be considered as a supplement to the Title I Design Report date March 1986 wherein energy related issues are discussed pertaining to building envelope and orientation as well as electrical systems design.

  17. Data Warehouse Model to Support Optimized Operation and Energy Savings in Buildings

    E-Print Network [OSTI]

    Stack, P.; Cahill, B.; Manzoor, F.; Menzel, K.

    2011-01-01T23:59:59.000Z

    University College Cork (Ireland) Department of Civil and Environmental Engineering Data Warehouse Model to support Optimized Operation and Energy Savings in Buildings Paul Stack, Brian Cahill, Farhan Manzoor, Prof. Karsten Menzel 20... October 2011 page 1ICEBO 2011 Session 10 - Brian Cahill University College Cork (Ireland) Department of Civil and Environmental Engineering ICT for Optimised Building Operation (ITOBO) 20 October 2011 ICEBO 2011 Session 10 - Brian Cahill page 2...

  18. Optima: Co-Optimization of Fuels and Engines | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment ofOil'sEnergy 9IndustrialOptima: Co-Optimization of

  19. Optimal Energy Management of a PHEV Using Trip Information | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of Contamination in ManyDepartment ofOil'sEnergy 9IndustrialOptima: Co-Optimization

  20. Development of a Low-Cost Rotary Steerable Drilling System

    SciTech Connect (OSTI)

    Roney Nazarian

    2012-01-31T23:59:59.000Z

    The project had the goal to develop and commercialize a low-cost rotary steerable system (LCRSS) capable of operating downhole at conventional pressures and temperatures to reduce operating costs by a minimum of 50% and lost-in-hole charges by at least 50% over the currently offered systems. The LCRSS system developed under this project does reduce operating costs by 55% and lost-in-hole charges by at least 50%. The developed product is not commercializable in its current form. The overall objective was to develop and commercialize a low cost rotary steerable system (LCRSS) capable of operating downhole at conventional pressures and temperatures (20,000 psi/150 C) while reducing the operating costs by 50% and the lost-in-hole charges by 50% over the currently available systems. The proposed reduction in costs were to be realized through the significant reduction in tool complexity, a corresponding increase in tool reliability as expressed in the mean-time between failure (MTBF), and a reduction in the time and costs required to service tools after each field operation. Ultimately, the LCRSS system was to be capable of drilling 7 7/8 in. to 9 5/8 in. borehole diameters. The project was divided into three Phases, of which Phases I & II were previously completed and reported on, and are part of the case file. Therefore, the previously reported information is not repeated herein. Phase III included the fabrication of two field ready prototypes that were to be subjected to a series of drilling tests at GTI Catoosa, DOE RMOTC, and at customer partnering wells, if possible, as appropriate in the timing of the field test objectives to fully exercise all elements of the LCRSS. These tests were conducted in an iterative process based on a performance/reliability improvement cycle with the goal of demonstrating the system met all aspects required for commercial viability. These tests were conducted to achieve continuous runs of 100+ hours with well trajectories that fully exercised the tool's build/turn/drop/hold target capabilities and its higher end ratings for bit weight, torque and rotary speed. The tool teardowns were rigorously analyzed at the conclusion of each field run to assess component wear rates and to fully document any detrimental behavior(s) observed.

  1. A Jackson Network Model and Threshold Policy for Joint Optimization of Energy and Delay in Multi-Hop

    E-Print Network [OSTI]

    Shihada, Basem

    of energy and delay in a multi- hop wireless network. The optimization variables are the transmission rates, transmit with the maximal rate (power); otherwise, no transmission. With these optimality properties of wireless networks since most of the mobile end users are powered by battery (Montemanni et al., 2008

  2. 66 IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, VOL. 1, NO. 2, JULY 2010 Optimization of Wind Turbine Performance With

    E-Print Network [OSTI]

    Kusiak, Andrew

    mass damper to mitigate vibrations of the blades and tower of a wind turbine was presented in [1466 IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, VOL. 1, NO. 2, JULY 2010 Optimization of Wind Turbine, IEEE Abstract--This paper presents a multiobjective optimization model of wind turbine performance

  3. Climate Change and Optimal Energy Technology Department of Mechanical and Industrial Engineering, College of Engineering, University of Massachusetts, Amherst,

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Climate Change and Optimal Energy Technology R&D Policy Erin Baker Department of Mechanical of Massachusetts, Amherst, MA 01003, solak@som.umass.edu Public policy response to global climate change presents accounting for uncertainty and learning in climate change can have a large impact on optimal policy

  4. Integration of Low Energy Technologies for Optimal Building and Space Conditioning Design

    SciTech Connect (OSTI)

    D.E. Fisher

    2006-01-07T23:59:59.000Z

    EnergyPlus is the DOE's newest building energy simulation engine. It was developed specifically to support the design of low energy building systems. This project focused on developing new low energy building simulation models for EnergyPlus, verifying and validating new and existing EnergyPlus models and transferring the new technology to the private sector. The project focused primarily on geothermal and radiant technologies, which are related by the fact that both are based on hydronic system design. As a result of this project eight peer reviewed journal and conference papers were added to the archival literature and five technical reports were published as M.S. theses and are available in the archival literature. In addition, several reports, including a trombe wall validation report were written for web publication. Thirteen new or significantly enhanced modules were added to the EnergyPlus source code and forty-two new or significantly enhanced sections were added to the EnergyPlus documentation as a result of this work. A low energy design guide was also developed as a pedagogical tool and is available for web publication. Finally several tools including a hybrid ground source heat pump optimization program and a geothermal heat pump parameter estimation tool were developed for research and design and are available for web publication.

  5. Connecting apparatus for limited rotary or rectilinear motion

    DOE Patents [OSTI]

    Hardin, Jr., Roy T. (Greensburg, PA)

    1981-11-10T23:59:59.000Z

    Apparatus for providing connection between two members movable in a horizontal plane with respect to each other in a rotary or linear fashion. The apparatus includes a set of horizontal shelves affixed to each of the two members, vertically aligned across a selected gap. A number of cables or hoses, for electrical, hydraulic or pneumatic connection are arranged on the aligned shelves in a U-shaped loop, connected through their extremities to the two members, so that through a sliding motion portions of the cable are transferred from one shelf to the other, across the gap, upon relative motion of the members. The apparatus is particularly adaptable to the rotating plugs of the reactor vessel head of a nuclear reactor.

  6. Methodology, morphology, and optimization of carbon nanotube growth for improved energy storage in a double layer capacitor

    E-Print Network [OSTI]

    Ku, Daniel C. (Daniel Chung-Ming), 1985-

    2009-01-01T23:59:59.000Z

    The goal of this thesis is to optimize the growth of carbon nanotubes (CNTs) on a conducting substrate for use as an electrode to improve energy density in a double-layer capacitor. The focus has been on several areas, ...

  7. Toward zero net energy buildings : optimized for energy use and cost

    E-Print Network [OSTI]

    Brown, Carrie Ann, Ph. D. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    Recently, there has been a push toward zero net energy buildings (ZNEBs). While there are many options to reduce the energy used in buildings, it is often difficult to determine which are the most appropriate technologies ...

  8. Control, Estimation and Optimization of Energy Efficient Buildings Jeff Borggaard , John A. Burns , Amit Surana , Lizette Zietsman

    E-Print Network [OSTI]

    Burns, John A.

    Control, Estimation and Optimization of Energy Efficient Buildings Jeff Borggaard , John A. Burns-- Commercial buildings are responsible for a sig- nificant fraction of the energy consumption and greenhouse efficient buildings can have a tremendous impact on energy cost and greenhouse gas emission. Buildings

  9. SPIRAL: JOINT RUNTIME AND ENERGY OPTIMIZATION OF LINEAR TRANSFORMS Marek Telgarsky, James C. Hoe, Jose M. F. Moura

    E-Print Network [OSTI]

    Moura, José

    : (1) have large impact on the runtime and en- ergy of computing the discrete Fourier transformSPIRAL: JOINT RUNTIME AND ENERGY OPTIMIZATION OF LINEAR TRANSFORMS Marek Telgarsky, James C. Hoe simultaneous runtime, energy and/or power constraints. Hence, in addition to runtime, power and energy

  10. A Novel Shifting Balance Theory-based Approach to Optimization of an Energy-Constrained Modulation Scheme for

    E-Print Network [OSTI]

    Arslan, Tughrul

    A Novel Shifting Balance Theory-based Approach to Optimization of an Energy-Constrained Modulation is inspired by Wright's shifting balance theory (SBT) of evolution in population ge- netics. The total energy Abstract-- This paper presents a new approach to optimiza- tion of an energy-constrained modulation scheme

  11. Battery-Aware Selective Transmitters in Energy-Harvesting Sensor Networks: Optimal Solution and Stochastic Dual Approximation

    E-Print Network [OSTI]

    Marques, Antonio Garcia

    Battery-Aware Selective Transmitters in Energy-Harvesting Sensor Networks: Optimal Solution-Sueiro, Carlos III University of Madrid, Leganes, 28911, Madrid, SPAIN Abstract Energy-harvesting devices alleviate the problem of sensor nodes being powered by finite-capacity batteries. Since har- vested energy

  12. Network design optimization of fuel cell systems and distributed energy devices.

    SciTech Connect (OSTI)

    Colella, Whitney G.

    2010-07-01T23:59:59.000Z

    This research explores the thermodynamics, economics, and environmental impacts of innovative, stationary, polygenerative fuel cell systems (FCSs). Each main report section is split into four subsections. The first subsection, 'Potential Greenhouse Gas (GHG) Impact of Stationary FCSs,' quantifies the degree to which GHG emissions can be reduced at a U.S. regional level with the implementation of different FCS designs. The second subsection, 'Optimizing the Design of Combined Heat and Power (CHP) FCSs,' discusses energy network optimization models that evaluate novel strategies for operating CHP FCSs so as to minimize (1) electricity and heating costs for building owners and (2) emissions of the primary GHG - carbon dioxide (CO{sub 2}). The third subsection, 'Optimizing the Design of Combined Cooling, Heating, and Electric Power (CCHP) FCSs,' is similar to the second subsection but is expanded to include capturing FCS heat with absorptive cooling cycles to produce cooling energy. The fourth subsection, - Thermodynamic and Chemical Engineering Models of CCHP FCSs,' discusses the physics and thermodynamic limits of CCHP FCSs.

  13. Combined Municipal Solid Waste and biomass system optimization for district energy applications

    SciTech Connect (OSTI)

    Rentizelas, Athanasios A., E-mail: arent@central.ntua.gr; Tolis, Athanasios I., E-mail: atol@central.ntua.gr; Tatsiopoulos, Ilias P., E-mail: itat@central.ntua.gr

    2014-01-15T23:59:59.000Z

    Highlights: • Combined energy conversion of MSW and agricultural residue biomass is examined. • The model optimizes the financial yield of the investment. • Several system specifications are optimally defined by the optimization model. • The application to a case study in Greece shows positive financial yield. • The investment is mostly sensitive on the interest rate, the investment cost and the heating oil price. - Abstract: Municipal Solid Waste (MSW) disposal has been a controversial issue in many countries over the past years, due to disagreement among the various stakeholders on the waste management policies and technologies to be adopted. One of the ways of treating/disposing MSW is energy recovery, as waste is considered to contain a considerable amount of bio-waste and therefore can lead to renewable energy production. The overall efficiency can be very high in the cases of co-generation or tri-generation. In this paper a model is presented, aiming to support decision makers in issues relating to Municipal Solid Waste energy recovery. The idea of using more fuel sources, including MSW and agricultural residue biomass that may exist in a rural area, is explored. The model aims at optimizing the system specifications, such as the capacity of the base-load Waste-to-Energy facility, the capacity of the peak-load biomass boiler and the location of the facility. Furthermore, it defines the quantity of each potential fuel source that should be used annually, in order to maximize the financial yield of the investment. The results of an energy tri-generation case study application at a rural area of Greece, using mixed MSW and biomass, indicate positive financial yield of investment. In addition, a sensitivity analysis is performed on the effect of the most important parameters of the model on the optimum solution, pinpointing the parameters of interest rate, investment cost and heating oil price, as those requiring the attention of the decision makers. Finally, the sensitivity analysis is enhanced by a stochastic analysis to determine the effect of the volatility of parameters on the robustness of the model and the solution obtained.

  14. Granular Attrition due to Rotary Valve in a Pneumatic Conveying System

    E-Print Network [OSTI]

    Yao, Jun

    The rotary valve is a widely used mechanical device in many solids-handling industrial processes. However, it may also be responsible for most of the attrition effects occurring in a typical process. In this study, the ...

  15. An Advanced Solar-Powered Rotary Solid Adsorption Refrigerator with High Performance

    E-Print Network [OSTI]

    Zheng, A.; Gu, J.

    2006-01-01T23:59:59.000Z

    In this paper, according to practical consideration, a new solar powered rotary solid adsorption refrigerator system adopting activated carbon fibre + ethanol as its adsorption pair has been designed with higher performance. Moreover, the principle...

  16. Research and Application on the Mechanical Characters of Rotary Steering Drilling Tool

    E-Print Network [OSTI]

    Jiang, Shan

    2014-12-10T23:59:59.000Z

    AND CHARACTERISTICS OF ROTARY STEERABLE DRILLING TOOL SYSTEMS (RSS) TECHNOLOGY ................................................. 8 2.1 Main Features of Baker Hughes AutoTrak Rotary Steering Drilling Tool ..... 10 2.2 Main Features of Schlumberger PowerDriver RSS.... Baker Hughes AutoTrak, Schlumberger PowerDrive and Halliburton Geopilot are the most typical representatives of technical progress [1] [2]. The RSS has entered a large-scale industrial application stage, greatly advancing the progress of drilling...

  17. High-Fidelity Nuclear Energy System Optimization towards an Environmentally Benign, Sustainable, and Secure Energy Source

    E-Print Network [OSTI]

    Ames, David E.

    2011-10-21T23:59:59.000Z

    CPU Central Processing Unit D Deuterium DOE U.S. Department of Energy DU Depleted Uranium EFPD Effective Full Power Days ENDF/B Evaluated Nuclear Data Files ? Basic EOC End of Cycle FP Fission Products GCC Gulf Cooperation Council GDP... management. ? Reduce the inventories of civilian plutonium ? Enhance energy security by extracting energy recoverable in spent fuel and depleted uranium, ensuring that uranium resources do not become a limiting resource for nuclear power. ? Improve fuel...

  18. A Systems-Integration Approach to Optimizing the Water-Energy Nexus in Energy Surplus Processes

    E-Print Network [OSTI]

    Gabriel, Kerron Jude

    2014-10-02T23:59:59.000Z

    ................................................................................................... 1 CHAPTER II TARGETING OF THE WATER-ENERGY NEXUS IN GAS-TO-LIQUID PROCESSES: A COMPARISON OF SYNGAS TECHNOLOGIES ........................................... 3 2.1 Introduction... .................................................................................................. 9 2.5 Process development .......................................................................................................... 10 2.5.1 Syngas production flowsheet...

  19. dlCC Opt: Optimization Software for Renewable Energy Projects - Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron4 Self-Scrubbing:,, , ., ..., ,+ .-detonation detection |New

  20. Energy-Optimal Velocity Profiles for Car-Like Robots Pratap Tokekar, Nikhil Karnad and Volkan Isler

    E-Print Network [OSTI]

    Isler, Ibrahim Volkan

    to optimize their motion so as to minimize energy consumption. The driving motors are a major source of power for energy consumption of DC motors. We present closed form solutions for the unconstrained case and for the case where there is a bound on maximum velocity. We also study a general problem where the robot's path

  1. Abstract --The growth of non-conventional renewable energies involves a new challenge for optimal network expansion. A better

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    1 Abstract -- The growth of non-conventional renewable energies involves a new challenge and implementation of policies to develop Non-Conventional Renewable Energies (NCRE), they can be seen as a mechanism for optimal network expansion. A better integration of renewables will be allowed by determining transmission

  2. Quantum efficiency enhancement in nanocrystals using nonradiative energy transfer with optimized donor-acceptor ratio for hybrid LEDs

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Quantum efficiency enhancement in nanocrystals using nonradiative energy transfer with optimized donor-acceptor ratio for hybrid LEDs Sedat Nizamoglu, Onur Akin, and Hilmi Volkan Demira Department emitting diodes LEDs . For this purpose, we investigate energy gradient mixture of nanocrystal solids

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

    SciTech Connect (OSTI)

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

    2008-05-15T23:59:59.000Z

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

  4. The Spectrum of Thorium from 250 nm to 5500 nm: Ritz Wavelengths and Optimized Energy Levels

    E-Print Network [OSTI]

    Redman, Stephen L; Sansonetti, Craig J

    2013-01-01T23:59:59.000Z

    We have made precise observations of a thorium-argon hollow cathode lamp emission spectrum in the region between 350 nm and 1175 nm using a high-resolution Fourier transform spectrometer. Our measurements are combined with results from seven previously published thorium line lists (Giacchetti et al. 1974; Zalubas & Corliss 1974; Zalubas 1976; Palmer & Engleman 1983; Engleman et al. 2003; Lovis & Pepe 2007; Kerber et al. 2008) to re-optimize the energy levels of neutral, singly-, and doubly-ionized thorium (Th I, Th II, and Th III). Using the optimized level values, we calculate accurate Ritz wavelengths for 19679 thorium lines between 250 nm and 5500 nm (40000 1/cm to 1800 1/cm). We have also found 102 new thorium energy levels. A systematic analysis of previous measurements in light of our new results allows us to identify and propose corrections for systematic errors in Palmer & Engleman (1983) and typographical errors and incorrect classifications in Kerber et al. (2008). We also found a la...

  5. Building Distributed Energy Performance Optimization for China a Regional Analysis of Building Energy Costs and CO2 Emissions

    E-Print Network [OSTI]

    Feng, Wei

    2013-01-01T23:59:59.000Z

    optimizations. Technologies assessed include photovoltaics (PV), solar thermal, gas turbines, microturbines, fuel cells,

  6. A Systems-Integration Approach to Optimizing the Water-Energy Nexus in Energy Surplus Processes 

    E-Print Network [OSTI]

    Gabriel, Kerron Jude

    2014-10-02T23:59:59.000Z

    . In the screening problem, a targeting and benchmarking approach was used to identify the limits of the process for producing water and power from surplus energy. Various designs of the process were explored to compare the effects of process change on the overall...

  7. Apparatus and methods for cooling and sealing rotary helical screw compressors

    DOE Patents [OSTI]

    Fresco, Anthony N. (P.O. Box 734, Upton, NY 11973)

    1997-01-01T23:59:59.000Z

    In a compression system which incorporates a rotary helical screw compressor, and for any type of gas or refrigerant, the working liquid oil is atomized through nozzles suspended in, and parallel to, the suction gas flow, or alternatively the nozzles are mounted on the suction piping. In either case, the aim is to create positively a homogeneous mixture of oil droplets to maximize the effectiveness of the working liquid oil in improving the isothermal and volumetric efficiencies. The oil stream to be atomized may first be degassed at compressor discharge pressure by heating within a pressure vessel and recovering the energy added by using the outgoing oil stream to heat the incoming oil stream. The stripped gas is typically returned to the compressor discharge flow. In the preferred case, the compressor rotors both contain a hollow cavity through which working liquid oil is injected into channels along the edges of the rotors, thereby forming a continuous and positive seal between the rotor edges and the compressor casing. In the alternative method, working liquid oil is injected either in the same direction as the rotor rotation or counter to rotor rotation through channels in the compressor casing which are tangential to the rotor edges and parallel to the rotor centerlines or alternatively the channel paths coincide with the helical path of the rotor edges.

  8. Apparatus and methods for cooling and sealing rotary helical screw compressors

    DOE Patents [OSTI]

    Fresco, A.N.

    1997-08-05T23:59:59.000Z

    In a compression system which incorporates a rotary helical screw compressor, and for any type of gas or refrigerant, the working liquid oil is atomized through nozzles suspended in, and parallel to, the suction gas flow, or alternatively the nozzles are mounted on the suction piping. In either case, the aim is to create positively a homogeneous mixture of oil droplets to maximize the effectiveness of the working liquid oil in improving the isothermal and volumetric efficiencies. The oil stream to be atomized may first be degassed at compressor discharge pressure by heating within a pressure vessel and recovering the energy added by using the outgoing oil stream to heat the incoming oil stream. The stripped gas is typically returned to the compressor discharge flow. In the preferred case, the compressor rotors both contain a hollow cavity through which working liquid oil is injected into channels along the edges of the rotors, thereby forming a continuous and positive seal between the rotor edges and the compressor casing. In the alternative method, working liquid oil is injected either in the same direction as the rotor rotation or counter to rotor rotation through channels in the compressor casing which are tangential to the rotor edges and parallel to the rotor center lines or alternatively the channel paths coincide with the helical path of the rotor edges. 14 figs.

  9. Sway control method and system for rotary cranes

    DOE Patents [OSTI]

    Robinett, Rush D. (Tijeras, NM); Parker, Gordon G. (Houghton, MI); Feddema, John T. (Albuquerque, NM); Dohrmann, Clark R. (Albuquerque, NM); Petterson, Ben J. (Albuquerque, NM)

    1999-01-01T23:59:59.000Z

    Methods and apparatuses for reducing the oscillatory motion of rotary crane payloads during operator-commanded or computer-controlled maneuvers. An Input-shaping filter receives input signals from multiple operator input devices and converts them into output signals readable by the crane controller to dampen the payload tangential and radial sway associated with rotation of the jib. The input signals are characterized by a hub rotation trajectory .gamma.(t), which includes a jib angular acceleration .gamma., a trolley acceleration x, and a load-line length velocity L. The system state variables are characterized by a tangential rotation angle .theta.(t) and a radial rotation angle .phi.(t) of the load-line. The coupled equations of motion governing the filter are non-linear and configuration-dependent. In one embodiment, a filter is provided between the operator and the crane for filtering undesired frequencies from the angular .gamma. and trolley x velocities to suppress payload oscillation. In another embodiment, crane commands are computer generated and controlled to suppress vibration of the payload using a postulated asymmetrical shape for the acceleration profiles of the jib, which profiles are uniquely determined by a set of parameters (including the acceleration pulse amplitude and the duration and coast time between pulses), or a dynamic programming approach.

  10. Sway control method and system for rotary cranes

    DOE Patents [OSTI]

    Robinett, R.D.; Parker, G.G.; Feddema, J.T.; Dohrmann, C.R.; Petterson, B.J.

    1999-06-01T23:59:59.000Z

    Methods and apparatuses are disclosed for reducing the oscillatory motion of rotary crane payloads during operator-commanded or computer-controlled maneuvers. An Input-shaping filter receives input signals from multiple operator input devices and converts them into output signals readable by the crane controller to dampen the payload tangential and radial sway associated with rotation of the jib. The input signals are characterized by a hub rotation trajectory [gamma](t), which includes a jib angular acceleration [gamma], a trolley acceleration x, and a load-line length velocity L. The system state variables are characterized by a tangential rotation angle [theta](t) and a radial rotation angle [phi](t) of the load-line. The coupled equations of motion governing the filter are non-linear and configuration-dependent. In one embodiment, a filter is provided between the operator and the crane for filtering undesired frequencies from the angular [gamma] and trolley x velocities to suppress payload oscillation. In another embodiment, crane commands are computer generated and controlled to suppress vibration of the payload using a postulated asymmetrical shape for the acceleration profiles of the jib, which profiles are uniquely determined by a set of parameters (including the acceleration pulse amplitude and the duration and coast time between pulses), or a dynamic programming approach. 25 figs.

  11. Evaluation and Optimization of Underground Thermal Energy Storage Systems of Energy Efficient Buildings (WKSP)- A Project within the new German R&D- Framework EnBop 

    E-Print Network [OSTI]

    Bockelmann, F.; Kipry, H.; Plesser, S.; Fisch, M. N.

    2008-01-01T23:59:59.000Z

    Evaluation and optimization of underground thermal energy storage systems of Energy Efficient Buildings (WKSP) - A project within the new German R&D-framework EnBop Dipl.-Ing. Franziska Bockelmann IGS ? Institute of Building Services... and Energydesign, Technical University of Braunschweig, Germany Dipl.-Ing. Herdis Kipry IGS ? Institute of Building Services and Energydesign, Technical University of Braunschweig, Germany Dipl.-Ing. Stefan Plesser Head of Energy Efficient Non...

  12. A Full Demand Response Model in Co-Optimized Energy and

    SciTech Connect (OSTI)

    Liu, Guodong [ORNL; Tomsovic, Kevin [University of Tennessee, Knoxville (UTK)

    2014-01-01T23:59:59.000Z

    It has been widely accepted that demand response will play an important role in reliable and economic operation of future power systems and electricity markets. Demand response can not only influence the prices in the energy market by demand shifting, but also participate in the reserve market. In this paper, we propose a full model of demand response in which demand flexibility is fully utilized by price responsive shiftable demand bids in energy market as well as spinning reserve bids in reserve market. A co-optimized day-ahead energy and spinning reserve market is proposed to minimize the expected net cost under all credible system states, i.e., expected total cost of operation minus total benefit of demand, and solved by mixed integer linear programming. Numerical simulation results on the IEEE Reliability Test System show effectiveness of this model. Compared to conventional demand shifting bids, the proposed full demand response model can further reduce committed capacity from generators, starting up and shutting down of units and the overall system operating costs.

  13. Event based Kalman filter observer for rotary high speed on/off valve Meng Wang, Perry Y. Li

    E-Print Network [OSTI]

    Li, Perry Y.

    Event based Kalman filter observer for rotary high speed on/off valve Meng Wang, Perry Y. Li ERC, pli}@me.umn.edu Abstract-- A novel hydraulic rotary self-spinning high speed on/off valve is being- width-modulation (PWM). The valve is designed to operate at a spool frequency of 20Hz to 40Hz. A coarse

  14. Rotary seal with enhanced lubrication and contaminant flushing

    DOE Patents [OSTI]

    Dietle, Lannie L. (Sugar Land, TX)

    2000-01-01T23:59:59.000Z

    A resilient, ring shaped interference-type hydrodynamic rotary seal having waves on the lubricant side which provide increased film thickness and flushing action by creating contact pressure induced angulated restrictions formed by abrupt restrictive diverters. The angulated restrictions are defined by projecting ridges, corners at the trailing edge of the waves, or simply by use of a converging shape at the trailing edge of the waves which is more abrupt than the gently converging hydrodynamic inlet shape at the leading edge of the waves. The abrupt restrictive diverter performs two functions; a restricting function and a diverting function. The angulated restrictions cause a local film thickness restriction which produces a damming effect preventing a portion of the lubricant from leaking out of the dynamic sealing interface at the trailing edge of the wave, and results in a much thicker lubricant film thickness under the waves. This contributes to more film thickness in the remainder of the dynamic sealing interface toward the environment because film thickness tends to decay gradually rather than abruptly due to the relative stiffness of the seal material. Because of the angle of the abrupt restrictive diverter relative to the relative rotation direction, in conjunction with the restriction or damming effect, a strong diverting action is produced which pumps lubricant across the dynamic sealing interface toward the environment. The lubricant diversion is caused by the component of the rotational velocity tangent to the abrupt restrictive diverter. The component of rotational velocity normal to the abrupt restrictive diverter causes a portion of the lubricant film to be pumped past the abrupt restrictive diverter, thereby assuring adequate lubrication thereof.

  15. Conceptual Design of Optimized Fossil Energy Systems with Capture and Sequestration of Carbon Dioxide

    SciTech Connect (OSTI)

    Nils Johnson; Joan Ogden

    2010-12-31T23:59:59.000Z

    In this final report, we describe research results from Phase 2 of a technical/economic study of fossil hydrogen energy systems with carbon dioxide (CO{sub 2}) capture and storage (CCS). CO{sub 2} capture and storage, or alternatively, CO{sub 2} capture and sequestration, involves capturing CO{sub 2} from large point sources and then injecting it into deep underground reservoirs for long-term storage. By preventing CO{sub 2} emissions into the atmosphere, this technology has significant potential to reduce greenhouse gas (GHG) emissions from fossil-based facilities in the power and industrial sectors. Furthermore, the application of CCS to power plants and hydrogen production facilities can reduce CO{sub 2} emissions associated with electric vehicles (EVs) and hydrogen fuel cell vehicles (HFCVs) and, thus, can also improve GHG emissions in the transportation sector. This research specifically examines strategies for transitioning to large-scale coal-derived energy systems with CCS for both hydrogen fuel production and electricity generation. A particular emphasis is on the development of spatially-explicit modeling tools for examining how these energy systems might develop in real geographic regions. We employ an integrated modeling approach that addresses all infrastructure components involved in the transition to these energy systems. The overall objective is to better understand the system design issues and economics associated with the widespread deployment of hydrogen and CCS infrastructure in real regions. Specific objectives of this research are to: Develop improved techno-economic models for all components required for the deployment of both hydrogen and CCS infrastructure, Develop novel modeling methods that combine detailed spatial data with optimization tools to explore spatially-explicit transition strategies, Conduct regional case studies to explore how these energy systems might develop in different regions of the United States, and Examine how the design and cost of coal-based H{sub 2} and CCS infrastructure depend on geography and location.

  16. Control of Greenhouse Gas Emissions by Optimal DER Technology Investment and Energy Management in Zero-Net-Energy Buildings

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01T23:59:59.000Z

    Deru, D. Crawley (2006), “Zero Energy Buildings: A Criticaland Energy Management in Zero-Net-Energy Buildings Michaeland Energy Management in Zero-Net-Energy Buildings 1 Michael

  17. Machine imparting complex rotary motion for lapping a spherical inner diameter

    DOE Patents [OSTI]

    Carroll, T.A.; Yetter, H.H.

    1985-01-30T23:59:59.000Z

    An apparatus for imparting complex rotary motion is used to lap an inner spherical diameter surface of a workpiece. A lapping tool consists of a dome and rod mounted along the dome's vertical axis. The workpiece containing the lapping tool is held in a gimbal which uses power derived from a secondary takeoff means to impart rotary motion about a horizontal axis. The gimbal is rotated about a vertical axis by a take means while mounted at a radially outward position on a rotating arm.

  18. Progress In Electromagnetics Research M, Vol. 37, 1120, 2014 Energy Optimized Wireless Sensor Network for Monitoring inside

    E-Print Network [OSTI]

    Halgamuge, Malka N.

    , lighting, cooling, humidity levels and ventilation systems in a building using the electronic devicesProgress In Electromagnetics Research M, Vol. 37, 11­20, 2014 Energy Optimized Wireless Sensor. INTRODUCTION Building Automation System (BAS) challenges to monitor and have automatic control of the security

  19. OpenPEOPLE D2.8 Ergonomic Page 1/37 Open Power and Energy Optimization Platform and Estimator

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    OpenPEOPLE D2.8­ Ergonomic Page 1/37 OpenPEOPLE Open Power and Energy Optimization Platform and Estimator Internal Deliverable 2.8 Ergonomics Document Manager Contributors Checked by Name Jonathan PONROY ergonomic for the OpenPEOPLE software platform. inria-00624000,version1-16Sep2011 #12;OpenPEOPLE D2

  20. MIDWEST ISO CO-OPTIMIZATION BASED REAL-TIME DISPATCH AND PRICING OF ENERGY AND ANCILLARY SERVICES

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    day-ahead counterpart, real-time locational marginal prices (LMP) are calculated every fiveMIDWEST ISO CO-OPTIMIZATION BASED REAL-TIME DISPATCH AND PRICING OF ENERGY AND ANCILLARY SERVICES-time dispatch and pricing. The RT SCED formulation at the core of the real-time dispatch and pricing market

  1. Optimizing Cluster Heads for Energy Efficiency in Large-Scale Heterogeneous Wireless Sensor Networks

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

    Gu, Yi; Wu, Qishi; Rao, Nageswara S. V.

    2010-01-01T23:59:59.000Z

    Many complex sensor network applications require deploying a large number of inexpensive and small sensors in a vast geographical region to achieve quality through quantity. Hierarchical clustering is generally considered as an efficient and scalable way to facilitate the management and operation of such large-scale networks and minimize the total energy consumption for prolonged lifetime. Judicious selection of cluster heads for data integration and communication is critical to the success of applications based on hierarchical sensor networks organized as layered clusters. We investigate the problem of selecting sensor nodes in a predeployed sensor network to be the cluster heads tomore »minimize the total energy needed for data gathering. We rigorously derive an analytical formula to optimize the number of cluster heads in sensor networks under uniform node distribution, and propose a Distance-based Crowdedness Clustering algorithm to determine the cluster heads in sensor networks under general node distribution. The results from an extensive set of experiments on a large number of simulated sensor networks illustrate the performance superiority of the proposed solution over the clustering schemes based onk-means algorithm.« less

  2. Optimizing the Low Temperature Cooling Energy Supply: Experimental Performance of an Absorption Chiller, a Compression Refrigeration Machine and Direct Cooling - a Comparison

    E-Print Network [OSTI]

    Uhrhan, S.; Gerber, A.

    2012-01-01T23:59:59.000Z

    A strategy to optimize the low temperature cooling energy supply of a newly build office building is discussed against the background of a changing energy system. It is focused on, what production way - Direct Cooling, the Compression Refrigeration...

  3. Start | Grid View | Browse by Day OR Group/Topical | Author Index | Keyword Index | Personal Scheduler Optimal Design of Energy-Efficient Integrated Distillation Processes for

    E-Print Network [OSTI]

    Skogestad, Sigurd

    Scheduler Optimal Design of Energy-Efficient Integrated Distillation Processes for Multicomponent Ideal Optimal design of energy-efficient integrated distillation processes for multicomponent ideal and non, The Netherlands The dividing wall distillation columns (DWC) find increased use in industrial practice

  4. Optimal Indoor Air Temperature Considering Energy Savings and Thermal Comfort in the Shanghai Area

    E-Print Network [OSTI]

    Yao, Y.; Lian, Z.; Hou, Z.; Liu, W.

    2006-01-01T23:59:59.000Z

    influence on the optimal indoor air temperature than other influential factors. (2) The optimal indoor air temperature is nonlinear with the air velocity, and be linear with the air humidity and the clothes thermo-resistance. 25 25.5 26 26.5 27 27.5 28...) Optimal indoor air temperature in summer () ? Fig. 3 Influence of clothes thermo-resistance on the optimal indoor air temperature 3. OPTIMAL INDOOR AIR TEMPERATURE Known from the above analysis, when the indoor air velocity is below 0.3m...

  5. ROTARY FILTER FINES TESTING FOR SMALL COLUMN ION EXCHANGE

    SciTech Connect (OSTI)

    Herman, D.

    2011-08-03T23:59:59.000Z

    SRNL was requested to quantify the amount of 'fines passage' through the 0.5 micron membranes currently used for the rotary microfilter (RMF). Testing was also completed to determine if there is any additional benefit to utilizing a 0.1 micron filter to reduce the amount of fines that could pass through the filter. Quantifying of the amount of fines that passed through the two sets of membranes that were tested was accomplished by analyzing the filtrate by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) for titanium. Even with preparations to isolate the titanium, all samples returned results of less than the instrument's detection limit of 0.184 mg/L. Test results show that the 0.5 micron filters produced a significantly higher flux while showing a negligible difference in filtrate clarity measured by turbidity. The first targeted deployment of the RMF is with the Small Column Ion Exchange (SCIX) at the Savannah River Site (SRS). SCIX uses crystalline silicotitanate (CST) to sorb cesium to decontaminate a clarified salt solution. The passage of fine particles through the filter membranes in sufficient quantities has the potential to impact the downstream facilities. To determine the amount of fines passage, a contract was established with SpinTek Filtration to operate a 3-disk pilot scale unit with prototypic filter disk and various feeds and two different filter disk membranes. SpinTek evaluated a set of the baseline 0.5 micron filter disks as well as a set of 0.1 micron filter disks to determine the amount of fine particles that would pass the membrane and to determine the flux each set produced. The membrane on both disk sets is manufactured by the Pall Corporation (PMM 050). Each set of disks was run with three feed combinations: prototypically ground CST, CST plus monosodium titanate (MST), and CST, MST, plus Sludge Batch 6 (SB6) simulant. Throughout the testing, samples of the filtrate were collected, measured for turbidity, and sent back to SRNL for analysis to quantify the amount of fines that passed through the membrane. It should be noted that even though ground CST was tested, it will be transferred to the Defense Waste Processing Facility (DWPF) feed tank and is not expected to require filtration.

  6. Optimization of Operating Parameters for Minimum Mechanical Specific Energy in Drilling

    SciTech Connect (OSTI)

    Hamrick, Todd

    2011-05-25T23:59:59.000Z

    Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM. It is well documented that minimizing MSE by optimizing controllable factors results in maximum Rate of Penetration. Current methods for computing MSE make it possible to minimize MSE in the field only through a trial-and-error process. This work makes it possible to compute the optimum drilling parameters that result in minimum MSE. The parameters that have been traditionally used to compute MSE are interdependent. Mathematical relationships between the parameters were established, and the conventional MSE equation was rewritten in terms of a single parameter, Weight on Bit, establishing a form that can be minimized mathematically. Once the optimum Weight on Bit was determined, the interdependent relationship that Weight on Bit has with Torque and Penetration per Revolution was used to determine optimum values for those parameters for a given drilling situation. The improved method was validated through laboratory experimentation and analysis of published data. Two rock types were subjected to four treatments each, and drilled in a controlled laboratory environment. The method was applied in each case, and the optimum parameters for minimum MSE were computed. The method demonstrated an accurate means to determine optimum drilling parameters of Weight on Bit, Torque, and Penetration per Revolution. A unique application of micro-cracking is also presented, which demonstrates that rock failure ahead of the bit is related to axial force more than to rotation speed.

  7. Building Distributed Energy Performance Optimization for China a Regional Analysis of Building Energy Costs and CO2 Emissions

    E-Print Network [OSTI]

    Feng, Wei

    2013-01-01T23:59:59.000Z

    Retrieved from National Renewable Energy Laboratory: http://Golden, Colorado: National Renewable Energy Laboratory.for Energy Efficiency and Renewable Energy, Building

  8. Control of Greenhouse Gas Emissions by Optimal DER Technology Investment and Energy Management in Zero-Net-Energy Buildings

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01T23:59:59.000Z

    optimal could be acquired. Battery storage costs are roughlylead/acid battery) and thermal storage capabilities wereis limited by battery size - Heat storage is limited by

  9. On the power required to control the circular cylinder wake by rotary oscillations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    On the power required to control the circular cylinder wake by rotary oscillations Michel Bergmann Communication, we determine an approximate relation which gives the mean time power required to control the wake on whole or part of the cylinder surface. The mean control power thus depends on four parameters

  10. MODELING AND VALIDATION OF A HIGH SPEED ROTARY PWM ON/OFF VALVE Haink C. Tu

    E-Print Network [OSTI]

    Li, Perry Y.

    MODELING AND VALIDATION OF A HIGH SPEED ROTARY PWM ON/OFF VALVE Haink C. Tu Center for Compact-speed on/off valves are a critical technology for enabling digital control of hydraulic systems via pulse-width- modulation (PWM). High-speed valves, when used in virtually variable displacement pumps (VVDP), increase

  11. Ion mobilitymass spectrometry of a rotary ATPase reveals ATP-induced reduction in

    E-Print Network [OSTI]

    Cai, Long

    conversion as their catalytic rotation is associated with interdomain fluctuations and heterogeneity cooperation of components from both soluble and membrane domains, which results in heterogeneity of conformational states along the time axis of rotary catalysis. This, combined with the amphipathic nature

  12. Roundtables | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection TechnicalResonantNovember 15Rotary Firing inRotary Firing inRound

  13. Essays on the Economics of Environmental Issues: The Environmental Kuznets Curve to Optimal Energy Portfolios

    E-Print Network [OSTI]

    Meininger, Aaron G.

    2012-01-01T23:59:59.000Z

    allow for renewable energy’s full potential to be released.technical potential of the renewable energy technologies,

  14. Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules

    E-Print Network [OSTI]

    Cardoso, Goncalo

    2014-01-01T23:59:59.000Z

    management of small electric energy systems including V2Gand renewable energy sources,” Electric Power Systemsof electric-drive vehicles with renewable energy,” Energy,

  15. Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson...

    Open Energy Info (EERE)

    system planning The methods used in the paper are linear deterministic system without control signal, optimal power flow and economic dispatch The proposed method stabilized...

  16. Optimal Technology Investment and Operation in Zero-Net-Energy Buildings with Demand Response

    E-Print Network [OSTI]

    Stadler, Michael

    2009-01-01T23:59:59.000Z

    optimal could be acquired. Battery storage costs are roughlylead/acid battery) and thermal storage capabilities wereis limited by battery size - Heat storage is limited by

  17. Robust optimal sizing of an hybrid energy stand-alone system

    E-Print Network [OSTI]

    Alain Billionnet

    2014-03-25T23:59:59.000Z

    Mar 25, 2014 ... Abstract: This paper deals with the optimal design of a stand-alone hybrid system composed of wind turbines, solar photovoltaic panels and ...

  18. Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01T23:59:59.000Z

    are the dominant energy storage technology used with suchutilizing energy storage and other enabling technologies.

  19. Delay and Energy Optimal Two-Hop Relaying in Delay Tolerant Networks

    E-Print Network [OSTI]

    Kumar, Anurag

    Bangalore 560012, India Email: {chandra, anurag, rajeshs}@ece.iisc.ernet.in Abstract--We study the trade of the optimal policy. We also propose a simple suboptimal policy. We then compare the performance of the suboptimal policy against that of the optimal control with perfect information. These are bounds

  20. Energy 42 (2012) 486-496 Thermoeconomic operation optimization of a coal-fired power plant

    E-Print Network [OSTI]

    Luh, Peter

    2012-01-01T23:59:59.000Z

    optimization of a coal-fired power plant Jie Xiong a, Haibo Zhao a.*, Chao Zhang a, Chuguang Zheng a, Peter B optimization on a 300 MW coal-fired power plant located in Yiyang (Hunan Province, China) is accomplished based, are succes- sively realized on the power plant. Both strategies aim to minimize the total annual cost ofthe

  1. Building Distributed Energy Performance Optimization for China a Regional Analysis of Building Energy Costs and CO2 Emissions

    E-Print Network [OSTI]

    Feng, Wei

    2013-01-01T23:59:59.000Z

    of Public Buildings. Energy and Buildings (41), 426–435.and Renewable Energy, Building Technologies Program, of theand Renewable Energy, Building Technologies Program, of the

  2. Building Distributed Energy Performance Optimization for China a Regional Analysis of Building Energy Costs and CO2 Emissions

    E-Print Network [OSTI]

    Feng, Wei

    2013-01-01T23:59:59.000Z

    fast urbanization makes building energy efficiency a crucials potential for building energy efficiency and on-siteor carbon effective building energy efficiency and on-site

  3. Control of Greenhouse Gas Emissions by Optimal DER Technology Investment and Energy Management in Zero-Net-Energy Buildings

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01T23:59:59.000Z

    these renewable energy and storage technologies would makechiller, energy storage, or solar-based technologies areStorage Technologies,” ACEEE 2008 Summer Study on Energy

  4. Optimization Online - Convex and Nonsmooth Optimization ...

    E-Print Network [OSTI]

    Convex Optimization Methods for Dimension Reduction and Coefficient Estimation in ... Impulsive Optimal Control of Hybrid Finite-Dimensional Lagrangian Systems ... Incremental-like Bundle Methods with Application to Energy Planning

  5. This is a preprint of the following article, which is available from http://mdolab.engin.umich.edu/content/ multidisciplinary-design-optimization-offshore-wind-turbines-minimum-levelized-cost-energy. The published

    E-Print Network [OSTI]

    Papalambros, Panos

    ://mdolab.engin.umich.edu/content/ multidisciplinary-design-optimization-offshore-wind-turbines-minimum-levelized-cost-energy. The published article.A.M. van Kuik. Multidisciplinary Design Optimization of Offshore Wind Turbines for Minimum Levelized Cost of Energy. Renewable Energy (In press), 2014 Multidisciplinary Design Optimization of Offshore Wind Turbines

  6. Fluid MicropumpsBased on RotaryMagnetic Actuators Chong H. Ahn I and Mark G. Allen 2

    E-Print Network [OSTI]

    operation characteristics. A basic concept of micromachined microturbine was introduced and fabricated] allows that the concept of the microturbine to be reversed; i.e., to realize a rotary fluid micropump

  7. Chemical Distribution and Bonding of Lithium in Intercalated Graphite: Identification with Optimized Electron Energy Loss Spectroscopy

    SciTech Connect (OSTI)

    Wang, Feng; Graetz, Jason; Moreno, M. Sergio; Ma, Chao; Wu, Lijun; Volkov, Vyacheslav; Zhu, Yimei

    2011-01-01T23:59:59.000Z

    Direct mapping of the lithium spatial distribution and the chemical state provides critical information on structure-correlated lithium transport in electrode materials for lithium batteries. Nevertheless, probing lithium, the lightest solid element in the periodic table, poses an extreme challenge with traditional X-ray or electron scattering techniques due to its weak scattering power and vulnerability to radiation damage. Here, we report nanoscale maps of the lithium spatial distribution in electrochemically lithiated graphite using electron energy loss spectroscopy in the transmission electron microscope under optimized experimental conditions. The electronic structure of the discharged graphite was obtained from the near-edge fine structure of the Li and C K-edges and ab initio calculations. A 2.7 eV chemical shift of the Li K-edge, along with changes in the density of states, reveals the ionic nature of the intercalated lithium with significant charge transfer to the graphene sheets. Direct mapping of lithium in graphite revealed nanoscale inhomogeneities (nonstoichiometric regions), which are correlated with local phase separation and structural disorder (i.e., lattice distortion and dislocations) as observed by high-resolution transmission electron microscopy. The surface solid?electrolyte interphase (SEI) layer was also imaged and determined to have a thickness of 10?50 nm, covering both edge and basal planes with LiF as its primary inorganic component. The Li K-edge spectroscopy and mapping, combined with electron microscopy-based structural analysis provide a comprehensive view of the structure-correlated lithium intercalation in graphite and of the formation of the SEI layer.

  8. Chemical Distribution and Bonding of Lithium in Intercalated Graphite: Identification with Optimized Electron Energy Loss Spectroscopy

    SciTech Connect (OSTI)

    Zhu, Y.; Wang, F.; Graetz, J.; Moreno, M.S.; Ma, C.; Wu, L.; Volkov, V.

    2011-02-01T23:59:59.000Z

    Direct mapping of the lithium spatial distribution and the chemical state provides critical information on structure-correlated lithium transport in electrode materials for lithium batteries. Nevertheless, probing lithium, the lightest solid element in the periodic table, poses an extreme challenge with traditional X-ray or electron scattering techniques due to its weak scattering power and vulnerability to radiation damage. Here, we report nanoscale maps of the lithium spatial distribution in electrochemically lithiated graphite using electron energy loss spectroscopy in the transmission electron microscope under optimized experimental conditions. The electronic structure of the discharged graphite was obtained from the near-edge fine structure of the Li and C K-edges and ab initio calculations. A 2.7 eV chemical shift of the Li K-edge, along with changes in the density of states, reveals the ionic nature of the intercalated lithium with significant charge transfer to the graphene sheets. Direct mapping of lithium in graphite revealed nanoscale inhomogeneities (nonstoichiometric regions), which are correlated with local phase separation and structural disorder (i.e., lattice distortion and dislocations) as observed by high-resolution transmission electron microscopy. The surface solid-electrolyte interphase (SEI) layer was also imaged and determined to have a thickness of 10-50 nm, covering both edge and basal planes with LiF as its primary inorganic component. The Li K-edge spectroscopy and mapping, combined with electron microscopy-based structural analysis provide a comprehensive view of the structure-correlated lithium intercalation in graphite and of the formation of the SEI layer.

  9. Essays on the Economics of Environmental Issues: The Environmental Kuznets Curve to Optimal Energy Portfolios

    E-Print Network [OSTI]

    Meininger, Aaron G.

    2012-01-01T23:59:59.000Z

    157 B.2 Renewable Energy Funding and Speci?c Technology161 ix B.3 Renewable Energy Penetrationof Renewable Energy Consumption . . . . . . . . . . . . .

  10. Green queue : a framework for selecting energy optimal DVFS congurations in large scale MPI applications

    E-Print Network [OSTI]

    Peraza, Joshua

    2012-01-01T23:59:59.000Z

    settings . . . . . Green Queue Energy Savings with VariousApplication Figure 4.3: Green Queue Energy Savings withBlind Scaling Relative Energy Green Queue Relative Delay

  11. Essays on the Economics of Environmental Issues: The Environmental Kuznets Curve to Optimal Energy Portfolios

    E-Print Network [OSTI]

    Meininger, Aaron G.

    2012-01-01T23:59:59.000Z

    Factors are Most Supportive to Green Energy Penetrationare Most Supportive to Green Energy Penetration Introductionin the di?usion of green energy technology. After this

  12. Specification of an Information Delivery Tool to Support Optimal Holistic Environmental and Energy Management in Buildings

    E-Print Network [OSTI]

    O'Donnell, James

    2008-01-01T23:59:59.000Z

    Laboratory Buildings. ” Energy and Buildings 34 Geoghegan,consumption data. ” Energy and Buildings 24, Hampton, Dave.building operations. ” Energy and Buildings 33, (8):783–791.

  13. Searching for the Optimal Mix of Solar and Efficiency in Zero Net Energy Buildings: Preprint

    SciTech Connect (OSTI)

    Horowitz, S.; Christensen, C.; Anderson, R.

    2008-08-01T23:59:59.000Z

    Zero net energy buildings employ efficiency to reduce energy consumption and solar technologies to produce as much energy on site as is consumed on an annual basis.

  14. Optimal Deployment of Thermal Energy Storage under Diverse Economic and Climate Conditions

    E-Print Network [OSTI]

    DeForest, Nicolas

    2014-01-01T23:59:59.000Z

    Deployment  of  Thermal  Energy   Storage  under  Diverse  Dincer I. On thermal energy storage systems and applicationsin research on cold thermal energy storage, International

  15. Essays on the Economics of Environmental Issues: The Environmental Kuznets Curve to Optimal Energy Portfolios

    E-Print Network [OSTI]

    Meininger, Aaron G.

    2012-01-01T23:59:59.000Z

    cations for renewables and energy security”, Mitigation andfor Europe: maximising energy security and climate changeS. (2007), “Providing energy security in an interdepen- dent

  16. Optimal Control of Distributed Energy Resources and Demand Response under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal

    2010-01-01T23:59:59.000Z

    of Distributed Energy Resources and Demand Response underof Distributed Energy Resources and Demand Response underof Distributed Energy Resources and Demand Response under

  17. Essays on the Economics of Environmental Issues: The Environmental Kuznets Curve to Optimal Energy Portfolios

    E-Print Network [OSTI]

    Meininger, Aaron G.

    2012-01-01T23:59:59.000Z

    hydro, nuclear, and coal energy production. The portfoliosused to produce that energy; coal, natural gas, crude oil,gas relative to coal in producing energy, there remains a

  18. Optimal Deployment of Thermal Energy Storage under Diverse Economic and Climate Conditions

    E-Print Network [OSTI]

    DeForest, Nicolas

    2014-01-01T23:59:59.000Z

    > [5] Sivak M, Potential energy demand for cooling in the 50residential cooling energy demand to climate change, Energyof the potential cooling energy demand comes from developing

  19. Optimal Control of Distributed Energy Resources and Demand Response under Uncertainty

    E-Print Network [OSTI]

    Siddiqui, Afzal

    2010-01-01T23:59:59.000Z

    Control of Distributed Energy Resources and Demand ResponseControl of Distributed Energy Resources and Demand Responseinstalled distribution energy resources (DER) in the form of

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

    E-Print Network [OSTI]

    Stadler, Michael

    2008-01-01T23:59:59.000Z

    Gas-Fired Distributed Energy Resource Characterizations”,National Renewable Energy Resource Laboratory, Golden, CO,Edwards, “Distributed Energy Resources Customer Adoption