National Library of Energy BETA

Sample records for wave energy converters

  1. Cycloidal Wave Energy Converter

    SciTech Connect (OSTI)

    Stefan G. Siegel, Ph.D.

    2012-11-30

    This program allowed further advancing the development of a novel type of wave energy converter, a Cycloidal Wave Energy Converter or CycWEC. A CycWEC consists of one or more hydrofoils rotating around a central shaft, and operates fully submerged beneath the water surface. It operates under feedback control sensing the incoming waves, and converts wave power to shaft power directly without any intermediate power take off system. Previous research consisting of numerical simulations and two dimensional small 1:300 scale wave flume experiments had indicated wave cancellation efficiencies beyond 95%. The present work was centered on construction and testing of a 1:10 scale model and conducting two testing campaigns in a three dimensional wave basin. These experiments allowed for the first time for direct measurement of electrical power generated as well as the interaction of the CycWEC in a three dimensional environment. The Atargis team successfully conducted two testing campaigns at the Texas A&M Offshore Technology Research Center and was able to demonstrate electricity generation. In addition, three dimensional wave diffraction results show the ability to achieve wave focusing, thus increasing the amount of wave power that can be extracted beyond what was expected from earlier two dimensional investigations. Numerical results showed wave cancellation efficiencies for irregular waves to be on par with results for regular waves over a wide range of wave lengths. Using the results from previous simulations and experiments a full scale prototype was designed and its performance in a North Atlantic wave climate of average 30kW/m of wave crest was estimated. A full scale WEC with a blade span of 150m will deliver a design power of 5MW at an estimated levelized cost of energy (LCOE) in the range of 10-17 US cents per kWh. Based on the new results achieved in the 1:10 scale experiments these estimates appear conservative and the likely performance at full scale will exceed this initial performance estimates. In advancing the Technology Readiness Level (TRL) of this type of wave energy converter from 3 to 4, we find the CycWEC to exceed our initial estimates in terms of hydrodynamic performance. Once fully developed and optimized, it has the potential to not just outperform all other WEC technologies, but to also deliver power at a lower LCOE than competing conventional renewables like wind and solar. Given the large wave power resource both domestically and internationally, this technology has the potential to lead to a large improvement in our ability to produce clean electricity at affordable cost.

  2. Sandia Energy - WEC-Sim (Wave Energy Converter SIMulator)

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

    WEC-Sim (Wave Energy Converter SIMulator) Home Stationary Power Energy Conversion Efficiency Water Power WEC-Sim (Wave Energy Converter SIMulator) WEC-Sim (Wave Energy Converter...

  3. Ocean floor mounting of wave energy converters

    DOE Patents [OSTI]

    Siegel, Stefan G

    2015-01-20

    A system for mounting a set of wave energy converters in the ocean includes a pole attached to a floor of an ocean and a slider mounted on the pole in a manner that permits the slider to move vertically along the pole and rotate about the pole. The wave energy converters can then be mounted on the slider to allow adjustment of the depth and orientation of the wave energy converters.

  4. Controller for a wave energy converter

    DOE Patents [OSTI]

    Wilson, David G.; Bull, Diana L.; Robinett, III, Rush D.

    2015-09-22

    A wave energy converter (WEC) is described, the WEC including a power take off (PTO) that converts relative motion of bodies of the WEC into electrical energy. A controller controls operation of the PTO, causing the PTO to act as a motor to widen a wave frequency spectrum that is usable to generate electrical energy.

  5. Performance Assessment of the Wave Dragon Wave Energy Converter

    E-Print Network [OSTI]

    Hansen, René Rydhof

    Performance Assessment of the Wave Dragon Wave Energy Converter Based on the EquiMar Methodology S of the wave energy sector, device developers are called to provide reliable estimates on power performanceMar, Nissum Bredning, Hanstholm, North Sea, Ekofisk, Wave-to-wire, Wave energy. I. INTRODUCTION The wave

  6. New Perspectives on Wave Energy Converter Control 

    E-Print Network [OSTI]

    Price, Alexandra A E

    2009-01-01

    This work examines some of the fundamental problems behind the control of wave energy converters (WECs). Several new perspectives are presented to aid the understanding of the problem and the interpretation of the ...

  7. Wave Energy Converter Effects on Nearshore Wave Propagation

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

    Energy Converter Effects on Nearshore Wave Propagation Jesse Roberts 1 , Grace Chang *2 , Craig Jones *3 Sandia National Laboratories 1515 Eubank SE, Albuquerque, NM 87123 USA 1...

  8. Sandia Energy - Advanced Controls of Wave Energy Converters May...

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

    Advanced Controls of Wave Energy Converters May Increase Power Capture Up to 330% Home Renewable Energy Energy Water Power Partnership News News & Events Computational Modeling &...

  9. Sandia Energy - Sandia, NREL Release Wave Energy Converter Modeling...

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

    Release Wave Energy Converter Modeling and Simulation Code: WEC-Sim Home Renewable Energy Energy Water Power Partnership News News & Events Computational Modeling & Simulation...

  10. DOE Announces Webinars on the Wave Energy Converter Prize, the...

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

    the Wave Energy Converter Prize, the Best of the Clean Cities Tools and Resources, and More DOE Announces Webinars on the Wave Energy Converter Prize, the Best of the Clean Cities...

  11. 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% improvement in power output over a ballast-free wave energy converter. General Terms Algorithms; Applications

  12. Modelling and geometry optimisation of wave energy converters

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    Modelling and geometry optimisation of wave energy converters Adi Kurniawan Supervisors: Prof;Research questions Modelling How to develop more realistic wave energy converter (WEC) models while wave energy converter (WEC) models while at the same time reduce their simulation time? Optimisation

  13. Power Maximization in Wave-Energy Converters Using Sampled -Data Extremum Seeking /

    E-Print Network [OSTI]

    Chen, Tianjia

    2013-01-01

    Power Maximization in Wave-Energy Converters Using Sampled-design optimization of wave energy converters con- sistingN. Sahinkaya. A review of wave energy converter technology.

  14. MATHEMATICAL ANALYSIS OF A WAVE ENERGY CONVERTER ARNAUD ROUGIREL

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    MATHEMATICAL ANALYSIS OF A WAVE ENERGY CONVERTER MODEL ARNAUD ROUGIREL Abstract. In a context where for buoy-type ocean wave energy converter. The simplest model for this scheme is a non autonomous piecewise and periodic solutions, and compare the energy performance of this novel WEC with respect to the one of wave

  15. Power Maximization in Wave-Energy Converters Using Sampled -Data Extremum Seeking /

    E-Print Network [OSTI]

    Chen, Tianjia

    2013-01-01

    A review of wave energy converter technology. Proceedings ofdecades. With the technology of wave-energy convert- ers(Wave energy utilization: A review of the technologies. Re-

  16. Northwest Energy Innovations (TRL 5 6 System)- WETNZ MtiMode Wave Energy Converter Advancement Project

    Broader source: Energy.gov [DOE]

    Northwest Energy Innovations (TRL 5 6 System) - WETNZ MtiMode Wave Energy Converter Advancement Project

  17. CHARACTERIZING DANGEROUS WAVES FOR OCEAN WAVE ENERGY CONVERTER SURVIVABILITY Justin Hovland

    E-Print Network [OSTI]

    Haller, Merrick

    gradient technologies. This paper is focused on Ocean Wave Energy Converters (OWECs) and the needCHARACTERIZING DANGEROUS WAVES FOR OCEAN WAVE ENERGY CONVERTER SURVIVABILITY Justin Hovland ABSTRACT Ocean Wave Energy Converters (OWECs) operating on the water surface are subject to storms

  18. Application of wave generator theory to the development of a Wave Energy Converter

    E-Print Network [OSTI]

    Wood, Stephen L.

    Application of wave generator theory to the development of a Wave Energy Converter by Maila Sepri approve the attached thesis Application of wave generator theory to the development of a Wave Energy Application of wave generator theory to the development of a Wave Energy Converter by Maila Sepri Principal

  19. Mass-modulation schemes for a class of wave energy converters: Experiments, models, and efficacy

    E-Print Network [OSTI]

    Diamond, CA; Judge, CQ; Orazov, B; Sava?, Ö; O'Reilly, OM

    2015-01-01

    dynamics of a novel ocean wave energy converter. Journal of5565. Dick, W. , 2005. Wave energy converter. U.S. Patentof the IPS buoy wave energy converter including the effect

  20. A New Methodology for Frequency Domain Analysis of Wave Energy Converters with Periodically Varying Physical Parameters

    E-Print Network [OSTI]

    Victoria, University of

    A New Methodology for Frequency Domain Analysis of Wave Energy Converters with Periodically Varying Methodology for Frequency Domain Analysis of Wave Energy Converters with Periodically Varying Physical of Mechanical Engineering) ABSTRACT Within a wave energy converter's operational bandwidth, device operation

  1. The Effects of Wave Energy Converters on a Monochromatic Wave Climate

    E-Print Network [OSTI]

    Fox-Kemper, Baylor

    in wave energy converters as a possible means of providing renewable energy, the effects of a wave energy The interest in renewable energies is currently increasing due to the reported rise in global temperature and mean wave period of wave energy fields. There is tremendous energy potential in the ocean. Solar energy

  2. Characterization of U.S. Wave Energy Converter Test Sites: A...

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

    data and wave energy characteristics at three U.S. wave energy converter (WEC) test and potential deployment sites. Its purpose is to enable the comparison of wave...

  3. Power Maximization in Wave-Energy Converters Using Sampled -Data Extremum Seeking /

    E-Print Network [OSTI]

    Chen, Tianjia

    2013-01-01

    A review of wave energy converter technology. Proceedings ofWave energy utilization: A review of the technologies. Re-decades. With the technology of wave-energy convert- ers(

  4. The impulsive effects of momentum transfer on the dynamics of a novel ocean wave energy converter

    E-Print Network [OSTI]

    Diamond, CA; O'Reilly, OM; Sava?, O

    2013-01-01

    7] J. Falnes, A review of wave-energy extraction, MarineOrazov, O. M. O’Reilly, O. wave energy converter, Journal ofsimple model for a novel wave energy converter: non-resonant

  5. Power Maximization in Wave-Energy Converters Using Sampled -Data Extremum Seeking /

    E-Print Network [OSTI]

    Chen, Tianjia

    2013-01-01

    design optimization of wave energy converters con- sistingN. Sahinkaya. A review of wave energy converter technology.2009. [6] A.F.O. Falc˜ao. Wave energy utilization: A review

  6. Development of SNL-SWAN, a Validated Wave Energy Converter Array Modeling Tool

    E-Print Network [OSTI]

    Siefert, Chris

    Development of SNL-SWAN, a Validated Wave Energy Converter Array Modeling Tool Kelley Ruehl#1 energy will lead to the necessary deployment of Wave Energy Converters (WECs) in arrays, or wave farms state dependent wave energy conversion of WECs. Keywords-- wave energy, wave farm, WEC array, SWAN

  7. The Force of a Tsunami on a Wave Energy Converter

    E-Print Network [OSTI]

    O'Brien, Laura; Renzi, Emiliano; Dutykh, Denys; Dias, Frédéric

    2012-01-01

    With an increasing emphasis on renewable energy resources, wave power technology is fast becoming a realistic solution. However, the recent tsunami in Japan was a harsh reminder of the ferocity of the ocean. It is known that tsunamis are nearly undetectable in the open ocean but as the wave approaches the shore its energy is compressed creating large destructive waves. The question posed here is whether a nearshore wave energy converter (WEC) could withstand the force of an incoming tsunami. The analytical 3D model of Renzi & Dias (2012) developed within the framework of a linear theory and applied to an array of fixed plates is used. The time derivative of the velocity potential allows the hydrodynamic force to be calculated.

  8. Control influence on the electromagnetic generator pre-design for a wave energy converter

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    461 1 Control influence on the electromagnetic generator pre-design for a wave energy converter M of an electromagnetic generator for wave energy recovery. We will start by describing the wave energy converter (WEC of the study problem. Keywords: optimization, control, design methodology, direct drive generator, wave energy

  9. Design and Control of a Floating Wave-Energy Converter Utilizing a Permanent Magnet Linear Generator

    E-Print Network [OSTI]

    Tom, Nathan Michael

    2013-01-01

    electrical generator technology for wave energy converters,”wave energy point absorber,” Proceedings of the IFAC Conference on Control Methodologies and Technologyseen, clean technologies, such as ocean wave energy, present

  10. Power Maximization in Wave-Energy Converters Using Sampled -Data Extremum Seeking /

    E-Print Network [OSTI]

    Chen, Tianjia

    2013-01-01

    with controlled motion. Power from sea waves, pages 381–399,SAN DIEGO Power Maximization in Wave-Energy Converters Usingfor wave energy con- verters with limited power takeoff

  11. Wave Energy Converter Design Tool for Point Absorbers with Arbitrary Device Geometry Kelley Ruehl

    E-Print Network [OSTI]

    Siefert, Chris

    Wave Energy Converter Design Tool for Point Absorbers with Arbitrary Device Geometry Kelley Ruehl University Corvallis, OR, USA ABSTRACT In order to promote and support the wave energy industry, a Wave strategies. KEY WORDS: wave energy; point absorber; time-domain; design tool. INTRODUCTION Wave Energy

  12. A Novel Excitation Scheme for an Ocean Wave Energy Converter

    E-Print Network [OSTI]

    Orazov, Bayram

    2011-01-01

    1.2 Wave Energy Conversion Technology 1.3 Heavinglevelhow.html) 1.2 Wave Energy Conversion Technology The

  13. Reference Model 6 (RM6): Oscillating Wave Energy Converter.

    SciTech Connect (OSTI)

    Bull, Diana L; Smith, Chris; Jenne, Dale Scott; Jacob, Paul; Copping, Andrea; Willits, Steve; Fontaine, Arnold; Brefort, Dorian; Gordon, Margaret Ellen; Copeland, Robert; Jepsen, Richard A.

    2014-10-01

    This report is an addendum to SAND2013-9040: Methodology for Design and Economic Analysis of Marine Energy Conversion (MEC) Technologies. This report describes an Oscillating Water Column Wave Energy Converter reference model design in a complementary manner to Reference Models 1-4 contained in the above report. In this report, a conceptual design for an Oscillating Water Column Wave Energy Converter (WEC) device appropriate for the modeled reference resource site was identified, and a detailed backward bent duct buoy (BBDB) device design was developed using a combination of numerical modeling tools and scaled physical models. Our team used the methodology in SAND2013-9040 for the economic analysis that included costs for designing, manufacturing, deploying, and operating commercial-scale MEC arrays, up to 100 devices. The methodology was applied to identify key cost drivers and to estimate levelized cost of energy (LCOE) for this RM6 Oscillating Water Column device in dollars per kilowatt-hour (%24/kWh). Although many costs were difficult to estimate at this time due to the lack of operational experience, the main contribution of this work was to disseminate a detailed set of methodologies and models that allow for an initial cost analysis of this emerging technology. This project is sponsored by the U.S. Department of Energy's (DOE) Wind and Water Power Technologies Program Office (WWPTO), within the Office of Energy Efficiency & Renewable Energy (EERE). Sandia National Laboratories, the lead in this effort, collaborated with partners from National Laboratories, industry, and universities to design and test this reference model.

  14. Influence of control strategy on the global efficiency of a Direct Wave Energy Converter with

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Influence of control strategy on the global efficiency of a Direct Wave Energy Converter, France Abstract--The choice of control strategy for Direct Wave Energy Converters (DWEC) is often a simple loss model in order to design a better control strategy. Keywords--Wave energy conversion; Point

  15. Design and Control of a Floating Wave-Energy Converter Utilizing a Permanent Magnet Linear Generator

    E-Print Network [OSTI]

    Tom, Nathan Michael

    2013-01-01

    electrical generator technology for wave energy converters,”seen, clean technologies, such as ocean wave energy, presentwave energy point absorber,” Proceedings of the IFAC Conference on Control Methodologies and Technology

  16. Reference Model 5 (RM5): Oscillating Surge Wave Energy Converter

    SciTech Connect (OSTI)

    Yu, Y. H.; Jenne, D. S.; Thresher, R.; Copping, A.; Geerlofs, S.; Hanna, L. A.

    2015-01-01

    This report is an addendum to SAND2013-9040: Methodology for Design and Economic Analysis of Marine Energy Conversion (MEC) Technologies. This report describes an Oscillating Water Column Wave Energy Converter (OSWEC) reference model design in a complementary manner to Reference Models 1-4 contained in the above report. A conceptual design for a taut moored oscillating surge wave energy converter was developed. The design had an annual electrical power of 108 kilowatts (kW), rated power of 360 kW, and intended deployment at water depths between 50 m and 100 m. The study includes structural analysis, power output estimation, a hydraulic power conversion chain system, and mooring designs. The results were used to estimate device capital cost and annual operation and maintenance costs. The device performance and costs were used for the economic analysis, following the methodology presented in SAND2013-9040 that included costs for designing, manufacturing, deploying, and operating commercial-scale MEC arrays up to 100 devices. The levelized cost of energy estimated for the Reference Model 5 OSWEC, presented in this report, was for a single device and arrays of 10, 50, and 100 units, and it enabled the economic analysis to account for cost reductions associated with economies of scale. The baseline commercial levelized cost of energy estimate for the Reference Model 5 device in an array comprised of 10 units is $1.44/kilowatt-hour (kWh), and the value drops to approximately $0.69/kWh for an array of 100 units.

  17. Quantification of the influence of directional sea state parameters over the performances of wave energy converters 

    E-Print Network [OSTI]

    Pascal, Remy Claude Rene

    2012-11-29

    Accurate predictions of the annual energy yield from wave energy converters are essential to the development of the wave industry. The current method based on power matrices uses only a small part of the data available ...

  18. A Novel Excitation Scheme for an Ocean Wave Energy Converter

    E-Print Network [OSTI]

    Orazov, Bayram

    2011-01-01

    1.2 Wave Energy Conversion Technology 1.3 Heavinglevelhow.html) 1.2 Wave Energy Conversion Technology Thewaves on the map as a viable energy source. Over the past 30 years, WEC technology

  19. A Novel Excitation Scheme for an Ocean Wave Energy Converter

    E-Print Network [OSTI]

    Orazov, Bayram

    2011-01-01

    1.4 Tidal Energy . . . . . . .7th European Wave and Tidal Energy Conference. Porto (for such application. 1.4 Tidal Energy Often mistakenly

  20. LABORATORY OBSERVATIONS AND NUMERICAL MODELING OF THE EFFECTS OF AN ARRAY OF WAVE ENERGY CONVERTERS

    E-Print Network [OSTI]

    Haller, Merrick

    1 LABORATORY OBSERVATIONS AND NUMERICAL MODELING OF THE EFFECTS OF AN ARRAY OF WAVE ENERGY of wave energy converters (WECs) on water waves through the analysis of extensive laboratory experiments absorption is a reasonable predictor of the effect of WECs on the far field. Keywords: wave- energy; spectral

  1. On the configuration of arrays of floating wave energy converters 

    E-Print Network [OSTI]

    Child, Benjamin Frederick Martin

    2011-11-22

    In this thesis, certain issues relating to a number of wave energy absorbers operating in the same vicinity are investigated. Specifically, arrangements of the devices within such an array are sought, such that beneficial ...

  2. Experimental Wave Tank Test for Reference Model 3 Floating-Point Absorber Wave Energy Converter Project

    SciTech Connect (OSTI)

    Yu, Y. H.; Lawson, M.; Li, Y.; Previsic, M.; Epler, J.; Lou, J.

    2015-01-01

    The U.S. Department of Energy established a reference model project to benchmark a set of marine and hydrokinetic technologies including current (tidal, open-ocean, and river) turbines and wave energy converters. The objectives of the project were to first evaluate the status of these technologies and their readiness for commercial applications. Second, to evaluate the potential cost of energy and identify cost-reduction pathways and areas where additional research could be best applied to accelerate technology development to market readiness.

  3. Wave Energy Converter (WEC) Array Effects on Wave Current and Sediment Circulation: Monterey Bay CA.

    SciTech Connect (OSTI)

    Roberts, Jesse D.; Jones, Craig; Magalen, Jason

    2014-09-01

    The goal s of this study were to develop tools to quantitatively characterize environments where wave energy converter ( WEC ) devices may be installed and to assess e ffects on hydrodynamics and lo cal sediment transport. A large hypothetical WEC array was investigated using wave, hydrodynamic, and sediment transport models and site - specific average and storm conditions as input. The results indicated that there were significant changes in sediment s izes adjacent to and in the lee of the WEC array due to reduced wave energy. The circulation in the lee of the array was also altered; more intense onshore currents were generated in the lee of the WECs . In general, the storm case and the average case show ed the same qualitative patterns suggesting that these trends would be maintained throughout the year. The framework developed here can be used to design more efficient arrays while minimizing impacts on nearshore environmen ts.

  4. Efficiency analysis of a pneu-mechanical Wave Energy Converter : model of the device losses,

    E-Print Network [OSTI]

    Psaltis, Demetri

    ENAC/ Efficiency analysis of a pneu-mechanical Wave Energy Converter : model of the device losses. Van Herle 1 Mots Clés: Efficiency Analysis, Power Take Off, Renewable Energy, WEC, Wave Energy. 1 have been focused on the efficiency of the different technologies on a test rig and building

  5. Request for Information Regarding a Proposed Funding Opportunity for Administration of the Wave Energy Converter Prize

    Broader source: Energy.gov [DOE]

    This announcement is intended to serve as a Notice of Intent of the upcoming Funding Opportunity Announcement (FOA) regarding Administration of the Wave Energy Converter (WEC) Prize and Request for Information to solicit information regarding pote

  6. Request for Information Regarding a Proposed Funding Opportunity for Administration of the Wave Energy Converter Prize

    Broader source: Energy.gov [DOE]

    This announcement is intended to serve as a Notice of Intent of the upcoming Funding Opportunity Announcement (FOA) regarding Administration of the Wave Energy Converter (WEC) Prize and Request for Information.

  7. Effect of a nonlinear power take off on a wave energy converter 

    E-Print Network [OSTI]

    Bailey, Helen Louise

    2011-11-22

    This thesis is titled The influence of a nonlinear Power Take Off on a Wave Energy Converter. It looks at the effect that having a nonlinear Power Take Off (PTO) has on an inertial referenced, slack moored, point absorber, ...

  8. THE FORCE OF A TSUNAMI ON A WAVE ENERGY CONVERTER LAURA O'BRIEN, PAUL CHRISTODOULIDES, EMILIANO RENZI, DENYS DUTYKH,

    E-Print Network [OSTI]

    THE FORCE OF A TSUNAMI ON A WAVE ENERGY CONVERTER LAURA O'BRIEN, PAUL CHRISTODOULIDES, EMILIANO waves. The question posed here is whether a nearshore wave energy converter (WEC) could withstand Acknowledgements 10 References 10 1. Introduction Wave energy devices are slowly becoming a reality. Various

  9. MHK Technologies/WAVE ENERGY CONVERTER | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMIS DTocardo <Cross flowOpenW2WAVE

  10. Sandia Energy - WEC-Sim (Wave Energy Converter SIMulator)

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

    The WEC-Sim project is funded by the U.S. Department of Energy's Wind and Water Power Technologies Office and the code development effort is a collaboration between the...

  11. Wave Energy Converter Extreme Conditions Modeling Workshop | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,VillageWarrensourceCentre Jump to: navigation, search Name:

  12. Sandia Energy - Sandia, NREL Release Wave Energy Converter Modeling and

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal EnergyRenewableCompaniesMODE,Simulation Code: WEC-Sim

  13. Relations for a periodic array of flap-type wave energy converters

    E-Print Network [OSTI]

    Renzi, Emiliano

    2012-01-01

    This paper investigates the interaction of plane incident waves with a wave farm in the open ocean. The farm consists of a periodic array of large flap-type wave energy converters. A linear inviscid potential-flow model, already developed by the authors for a single flap in a channel, is considered. Asymptotic analysis of the wave field allows to obtain new expressions of the reflection, transmission and radiation coefficients of the system. It is shown that, unlike a line of heaving buoys, an array of flap-type converters is able to exploit resonance of the system transverse modes in order to attain high capture factor levels. Relations between the hydrodynamic coefficients are derived and applied for optimising the power output of the wave farm.

  14. Investigation of Wave Energy Converter Effects on Near-shore Wave Fields: Model Generation Validation and Evaluation - Kaneohe Bay HI.

    SciTech Connect (OSTI)

    Roberts, Jesse D.; Chang, Grace; Jones, Craig

    2014-09-01

    The numerical model, SWAN (Simulating WAves Nearshore) , was used to simulate wave conditions in Kaneohe Bay, HI in order to determine the effects of wave energy converter ( WEC ) devices on the propagation of waves into shore. A nested SWAN model was validated then used to evaluate a range of initial wave conditions: significant wave heights (H s ) , peak periods (T p ) , and mean wave directions ( MWD) . Differences between wave height s in the presence and absence of WEC device s were assessed at locations in shore of the WEC array. The maximum decrease in wave height due to the WEC s was predicted to be approximately 6% at 5 m and 10 m water depths. Th is occurred for model initiation parameters of H s = 3 m (for 5 m water depth) or 4 m (10 m water depth) , T p = 10 s, and MWD = 330deg . Subsequently, bottom orbital velocities were found to decrease by about 6%.

  15. A Predictive power control of Doubly Fed Induction Generator for Wave Energy Converter

    E-Print Network [OSTI]

    Brest, Université de

    Switchgear Wave converter control Gear hal-01023509,version1-13Jul2014 Author manuscript, published in "IEEE

  16. A review of hydrodynamic investigations into arrays of ocean wave energy converters

    E-Print Network [OSTI]

    De Chowdhury, S; Sanchez, A Madrigal; Fleming, A; Winship, B; Illesinghe, S; Toffoli, A; Babanin, A; Penesis, I; Manasseh, R

    2015-01-01

    Theoretical, numerical and experimental studies on arrays of ocean wave energy converter are reviewed. The importance of extracting wave power via an array as opposed to individual wave-power machines has long been established. There is ongoing interest in implementing key technologies at commercial scale owing to the recent acceleration in demand for renewable energy. To date, several reviews have been published on the science and technology of harnessing ocean-wave power. However, there have been few reviews of the extensive literature on ocean wave-power arrays. Research into the hydrodynamic modelling of ocean wave-power arrays is analysed. Where ever possible, comparisons are drawn with physical scaled experiments. Some critical knowledge gaps have been found. Specific emphasis has been paid on understanding how the modelling and scaled experiments are likely to be complementary to each other.

  17. Resonant behaviour of an oscillating wave energy converter in a channel

    E-Print Network [OSTI]

    E. Renzi; F. Dias

    2012-04-10

    A mathematical model is developed to study the behaviour of an oscillating wave energy converter in a channel. During recent laboratory tests in a wave tank, peaks in the hydrodynamic actions on the converter occurred at certain frequencies of the incident waves. This resonant mechanism is known to be generated by the transverse sloshing modes of the channel. Here the influence of the channel sloshing modes on the performance of the device is further investigated. Within the framework of a linear inviscid potential-flow theory, application of the Green theorem yields a hypersingular integral equation for the velocity potential in the fluid domain. The solution is found in terms of a fast-converging series of Chebyshev polynomials of the second kind. The physical behaviour of the system is then analysed, showing sensitivity of the resonant sloshing modes to the geometry of the device, that concurs in increasing the maximum efficiency. Analytical results are validated with available numerical and experimental data.

  18. Resonant behaviour of an oscillating wave energy converter in a channel

    E-Print Network [OSTI]

    Renzi, E

    2012-01-01

    A mathematical model is developed to study the behaviour of an oscillating wave energy converter in a channel. During recent laboratory tests in a wave tank, peaks in the hydrodynamic actions on the converter occurred at certain frequencies of the incident waves. This resonant mechanism is known to be generated by the transverse sloshing modes of the channel. Here the influence of the channel sloshing modes on the performance of the device is further investigated. Within the framework of a linear inviscid potential-flow theory, application of the Green theorem yields a hypersingular integral equation for the velocity potential in the fluid domain. The solution is found in terms of a fast-converging series of Chebyshev polynomials of the second kind. The physical behaviour of the system is then analysed, showing sensitivity of the resonant sloshing modes to the geometry of the device, that concurs in increasing the maximum efficiency. Analytical results are validated with available numerical and experimental d...

  19. Dynamics of a horizontal cylinder oscillating as a wave energy converter about an off-centred axis. 

    E-Print Network [OSTI]

    Lucas, Jorge

    2011-11-22

    The hydrodynamic properties of a horizontal cylinder which is free to pitch about an off-centred axis are studied and used to derive the equations of motion of a wave energy converter which extracts energy from incoming ...

  20. Investigation of Wave Energy Converter Effects on Wave Fields: A Modeling Sensitivity Study in Monterey Bay CA.

    SciTech Connect (OSTI)

    Roberts, Jesse D.; Grace Chang; Jason Magalen; Craig Jones

    2014-08-01

    A n indust ry standard wave modeling tool was utilized to investigate model sensitivity to input parameters and wave energy converter ( WEC ) array deploym ent scenarios. Wave propagation was investigated d ownstream of the WECs to evaluate overall near - and far - field effects of WEC arrays. The sensitivity study illustrate d that b oth wave height and near - bottom orbital velocity we re subject to the largest pote ntial variations, each decreas ed in sensitivity as transmission coefficient increase d , as number and spacing of WEC devices decrease d , and as the deployment location move d offshore. Wave direction wa s affected consistently for all parameters and wave perio d was not affected (or negligibly affected) by varying model parameters or WEC configuration .

  1. Wave Energy Converter Effects on Wave Fields: Evaluation of SNL-SWAN and Sensitivity Studies in Monterey Bay CA.

    SciTech Connect (OSTI)

    Roberts, Jesse D.; Chang, Grace; Magalen, Jason; Jones, Craig

    2014-09-01

    A modified version of an indust ry standard wave modeling tool was evaluated, optimized, and utilized to investigate model sensitivity to input parameters a nd wave energy converter ( WEC ) array deployment scenarios. Wave propagation was investigated d ownstream of the WECs to evaluate overall near - and far - field effects of WEC arrays. The sensitivity study illustrate d that wave direction and WEC device type we r e most sensitive to the variation in the model parameters examined in this study . Generally, the changes in wave height we re the primary alteration caused by the presence of a WEC array. Specifically, W EC device type and subsequently their size directly re sult ed in wave height variations; however, it is important to utilize ongoing laboratory studies and future field tests to determine the most appropriate power matrix values for a particular WEC device and configuration in order to improve modeling results .

  2. Design and Analysis for a Floating Oscillating Surge Wave Energy Converter: Preprint

    SciTech Connect (OSTI)

    Yu, Y. H.; Li, Y.; Hallett, K.; Hotimsky, C.

    2014-03-01

    This paper presents a recent study on the design and analysis of an oscillating surge wave energy converter. A successful wave energy conversion design requires the balance between the design performance and cost. The cost of energy is often used as the metric to judge the design of the wave energy conversion system. It is often determined based on the device power performance, the cost for manufacturing, deployment, operation and maintenance, as well as the effort to ensure the environmental compliance. The objective of this study is to demonstrate the importance of a cost driven design strategy and how it can affect a WEC design. Three oscillating surge wave energy converter (OSWEC) designs were used as the example. The power generation performance of the design was modeled using a time-domain numerical simulation tool, and the mass properties of the design were determined based on a simple structure analysis. The results of those power performance simulations, the structure analysis and a simple economic assessment were then used to determine the cost-efficiency of selected OSWEC designs. Finally, a discussion on the environmental barrier, integrated design strategy and the key areas that need further investigation is also presented.

  3. Design and Control of a Floating Wave-Energy Converter Utilizing a Permanent Magnet Linear Generator

    E-Print Network [OSTI]

    Tom, Nathan Michael

    2013-01-01

    control of resonant wave energy devices,” Phil. Trans. R.control of deep water wave energy devices using an activecapture of a wave energy device by inertia adjustment,”

  4. DEVELOPMENT OF PTO-SIM: A POWER PERFORMANCE MODULE FOR THE OPEN-SOURCE WAVE ENERGY CONVERTER CODE WEC-SIM

    E-Print Network [OSTI]

    DEVELOPMENT OF PTO-SIM: A POWER PERFORMANCE MODULE FOR THE OPEN-SOURCE WAVE ENERGY CONVERTER CODE National Laboratories Albuquerque, NM USA Email: kelley.ruehl@sandia.gov ABSTRACT WEC-Sim (Wave Energy Converter-SIMulator) is an open- source wave energy converter (WEC) code capable of simulat- ing WECs

  5. A DISTENSIBLETUBE WAVE ENERGY CONVERTER WITH A DISTRIBUTED POWERTAKEOFF R.C.T.Rainey, Atkins Ltd., Woodcote Grove, Epsom KT18 5BW, U.K. rod.rainey@atkinsglobal.com

    E-Print Network [OSTI]

    1 A DISTENSIBLETUBE WAVE ENERGY CONVERTER WITH A DISTRIBUTED POWERTAKEOFF R.C.T.Rainey, Atkins A distensibletube Wave Energy Converter (WEC) operates by converting the wave energy into "bulge waves interaction then occurs, and large bulge waves are generated, concentrating the wave energy

  6. Investigation of Wave Energy Converter Effects on the Nearshore Environment: A Month-Long Study in Monterey Bay CA.

    SciTech Connect (OSTI)

    Roberts, Jesse D.; Chang, Grace; Magalen, Jason; Jones, Craig

    2014-09-01

    A modified version of an indust ry standard wave modeling tool, SNL - SWAN, was used to perform model simulations for hourly initial wave conditio ns measured during the month of October 2009. The model was run with an array of 50 wave energy converters (WECs) and compared with model runs without WECs. Maximum changes in H s were found in the lee of the WEC array along the angles of incident wave dire ction and minimal changes were found along the western side of the model domain due to wave shadowing by land. The largest wave height reductions occurred during observed typhoon conditions and resulted in 14% decreases in H s along the Santa Cruz shoreline . Shoreline reductions in H s were 5% during s outh swell wave conditions and negligible during average monthly wave conditions.

  7. Predictive Power Control of Doubly-Fed Induction Generator for Wave Energy Converters

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Energy Converter Control Main Circuit Breaker Medium Voltage Switchgear Line Coupling Transformer Gear Medium Voltage Switchgear Line Coupling Transformer Fig. 1. An illustrative example of DFIG-based WEC

  8. Characterization of U.S. Wave Energy Converter (WEC) Test Sites: A Catalogue of Met-Ocean Data.

    SciTech Connect (OSTI)

    Dallman, Ann Renee; Neary, Vincent Sinclair

    2014-10-01

    This report presents met - ocean data and wave energy characteristics at three U.S. wave energy converter (WEC) test and potential deployment sites . Its purpose is to enable the compari son of wave resource characteristics among sites as well as the select io n of test sites that are most suitable for a developer's device and that best meet their testing needs and objectives . It also provides essential inputs for the design of WEC test devices and planning WEC tests, including the planning of deployment and op eration s and maintenance. For each site, this report catalogues wave statistics recommended in the (draft) International Electrotechnical Commission Technical Specification (IEC 62600 - 101 TS) on Wave Energy Characterization, as well as the frequency of oc currence of weather windows and extreme sea states, and statistics on wind and ocean currents. It also provides useful information on test site infrastructure and services .

  9. Preliminary Verification and Validation of WEC-Sim, an Open-Source Wave Energy Converter Design Tool: Preprint

    SciTech Connect (OSTI)

    Ruehl, K.; Michelen, C.; Kanner, S.; Lawson, M.; Yu, Y. H.

    2014-03-01

    To promote and support the wave energy industry, a wave energy converter (WEC) design tool, WEC-Sim, is being developed by Sandia National Laboratories and the National Renewable Energy Laboratory. In this paper, the WEC-Sim code is used to model a point absorber WEC designed by the U.S. Department of Energy's reference model project. Preliminary verification was performed by comparing results of the WEC-Sim simulation through a code-to-code comparison, utilizing the commercial codes ANSYS-AQWA, WaveDyn, and OrcaFlex. A preliminary validation of the code was also performed by comparing WEC-Sim simulation results to experimental wave tank tests.

  10. Experimental Wave Tank Test for Reference Model 3 Floating-Point Absorber Wave Energy Converter Project

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submitKansasCommunitiesof Energy8)highlights ExperimentalExperimental Test

  11. MHK Technologies/Ocean Wave Energy Converter OWEC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMI Combined Energy SystemTreaderWave

  12. Universal thermochemical energy converter

    DOE Patents [OSTI]

    Labinov, Solomon Davidovich (Oak Ridge, TN); Sand, James R. (Oak Ridge, TN); Conklin, James C. (Knoxville, TN); VanCoevering, James (Oak Ridge, TN); Courville, George E. (Oak Ridge, TN)

    2001-01-01

    Disclosed are methods and apparatus for a thermochemical closed cycle employing a polyatomic, chemically active working fluid for converting heat energy into useful work.

  13. Synthesis of Numerical Methods for Modeling Wave Energy Converter-Point Absorbers: Preprint

    SciTech Connect (OSTI)

    Li, Y.; Yu, Y. H.

    2012-05-01

    During the past few decades, wave energy has received significant attention among all ocean energy formats. Industry has proposed hundreds of prototypes such as an oscillating water column, a point absorber, an overtopping system, and a bottom-hinged system. In particular, many researchers have focused on modeling the floating-point absorber as the technology to extract wave energy. Several modeling methods have been used such as the analytical method, the boundary-integral equation method, the Navier-Stokes equations method, and the empirical method. However, no standardized method has been decided. To assist the development of wave energy conversion technologies, this report reviews the methods for modeling the floating-point absorber.

  14. MHK Technologies/Oceanlinx Mark 3 Wave Energy Converter | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMI Combined EnergyOcean

  15. Sandia Energy - Sandia-NREL Wave Energy Converter (WEC)-Sim Development

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)Geothermal EnergyRenewableCompaniesMODE,SimulationInstituteMeeting

  16. Technological cost-reduction pathways for attenuator wave energy converters in the marine hydrokinetic environment.

    SciTech Connect (OSTI)

    Bull, Diana L; Ochs, Margaret Ellen

    2013-09-01

    This report considers and prioritizes the primary potential technical costreduction pathways for offshore wave activated body attenuators designed for ocean resources. This report focuses on technical research and development costreduction pathways related to the device technology rather than environmental monitoring or permitting opportunities. Three sources of information were used to understand current cost drivers and develop a prioritized list of potential costreduction pathways: a literature review of technical work related to attenuators, a reference device compiled from literature sources, and a webinar with each of three industry device developers. Data from these information sources were aggregated and prioritized with respect to the potential impact on the lifetime levelized cost of energy, the potential for progress, the potential for success, and the confidence in success. Results indicate the five most promising costreduction pathways include advanced controls, an optimized structural design, improved power conversion, planned maintenance scheduling, and an optimized device profile.

  17. Live Webinar on the Funding Opportunity for Administration of the Wave Energy Converter Prize

    Broader source: Energy.gov [DOE]

    The Water Power Program is seeking a Prize Administrator with expertise in prize competitions to collaborate with DOE, technical experts, and a wave tank testing facility in developing and...

  18. WET-NZ Multi-Mode Wave Energy Converter Advancement Project

    SciTech Connect (OSTI)

    Kopf, Steven

    2013-10-15

    The overall objective of the project was to verify the ocean wavelength functionality of the WET-NZ through targeted hydrodynamic testing at wave tank scale and controlled open sea deployment of a 1/2 scale (1:2) experimental device. This objective was accomplished through a series of tasks designed to achieve four specific goals: ?Wave Tank Testing to Characterize Hydrodynamic Characteristics; ? Open-Sea Testing of a New 1:2 Scale Experimental Model; ? Synthesis and Analysis to Demonstrate and Confirm TRL5/6 Status; ? Market Impact & Competitor Analysis, Business Plan and Commercialization Strategy.

  19. Implementing Nonlinear Buoyancy and Excitation Forces in the WEC-Sim Wave Energy Converter Modeling Tool: Preprint

    SciTech Connect (OSTI)

    Lawson, M.; Yu, Y. H.; Nelessen, A.; Ruehl, K.; Michelen, C.

    2014-05-01

    Wave energy converters (WECs) are commonly designed and analyzed using numerical models that combine multi-body dynamics with hydrodynamic models based on the Cummins Equation and linearized hydrodynamic coefficients. These modeling methods are attractive design tools because they are computationally inexpensive and do not require the use of high performance computing resources necessitated by high-fidelity methods, such as Navier Stokes computational fluid dynamics. Modeling hydrodynamics using linear coefficients assumes that the device undergoes small motions and that the wetted surface area of the devices is approximately constant. WEC devices, however, are typically designed to undergo large motions in order to maximize power extraction, calling into question the validity of assuming that linear hydrodynamic models accurately capture the relevant fluid-structure interactions. In this paper, we study how calculating buoyancy and Froude-Krylov forces from the instantaneous position of a WEC device (referred to as instantaneous buoyancy and Froude-Krylov forces from herein) changes WEC simulation results compared to simulations that use linear hydrodynamic coefficients. First, we describe the WEC-Sim tool used to perform simulations and how the ability to model instantaneous forces was incorporated into WEC-Sim. We then use a simplified one-body WEC device to validate the model and to demonstrate how accounting for these instantaneously calculated forces affects the accuracy of simulation results, such as device motions, hydrodynamic forces, and power generation.

  20. Development of a Wireless Control and Monitoring System for Wave Energy Converters

    E-Print Network [OSTI]

    Wood, Stephen L.

    and uncertain nature of ocean energies, management of marine electric grids and stable integration of large ocean weather conditions and growing "power- quality" requirements. These and other inherent factors meters and produce electricity. This production of electricity is by harnessing the oscillatory motion

  1. DOE Announces Webinars on the Wave Energy Converter Prize, the Best of the

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i pState Efficiency, RenewablesLiteracyDevelopingResourcesthe Future,Clean

  2. High-Frequency Matrix Converter with Square Wave Input - 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (JournalvivoHigh energy neutron Computed Tomography developedHDHPPortal

  3. Wave Energy Resource Analysis for Use in Wave Energy Conversion 

    E-Print Network [OSTI]

    Pastor, J.; Liu, Y.; Dou, Y.

    2014-01-01

    In order to predict the response of wave energy converters an accurate representation of the wave climate resource is crucial. This paper gives an overview of wave resource modeling techniques as well as detailing a methodology for estimating...

  4. High-frequency matrix converter with square wave input

    DOE Patents [OSTI]

    Carr, Joseph Alexander; Balda, Juan Carlos

    2015-03-31

    A device for producing an alternating current output voltage from a high-frequency, square-wave input voltage comprising, high-frequency, square-wave input a matrix converter and a control system. The matrix converter comprises a plurality of electrical switches. The high-frequency input and the matrix converter are electrically connected to each other. The control system is connected to each switch of the matrix converter. The control system is electrically connected to the input of the matrix converter. The control system is configured to operate each electrical switch of the matrix converter converting a high-frequency, square-wave input voltage across the first input port of the matrix converter and the second input port of the matrix converter to an alternating current output voltage at the output of the matrix converter.

  5. Protocols for the Equitable Assessment of Marine Energy Converters 

    E-Print Network [OSTI]

    Ingram, David; Smith, George; Bittencourt-Ferreira, Claudio; Smith, Helen

    This book contains the suite of protocols for the equitable evaluation of marine energy converters (based on either tidal or wave energy) produced by the EquiMar consortium led by the University of Edinburgh. These protocols ...

  6. Characterization of U.S. Wave Energy Converter (WEC) Test Sites: A Catalogue of Met-Ocean Data

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a lCaribElectricSouthApplying caulkChapter 9Desert Arroyo Seepage

  7. One-way wave-equation migration of compressional and converted waves in a VTI medium

    E-Print Network [OSTI]

    Ursin, Bjørn

    One-way wave-equation migration of compressional and converted waves in a VTI medium Ørjan Pedersen- sure and shear-wave reflections, one can increase the amount of information obtained about the subsur- face than by recording pressure waves alone. Geo- logic structures which are not visible by using con

  8. Wave Energy Extraction from buoys

    E-Print Network [OSTI]

    Garnaud, Xavier

    2009-01-01

    Different types of Wave Energy Converters currently tested or under development are using the vertical movement of floating bodies to generate electricity. For commercial applications, arrays have to be considered in order ...

  9. Converting Energy to Medical Progress

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the followingConcentratingPortal ControllingConvection feedbacksConverting

  10. Multicomponent seismic data, combining P-wave and converted P-to-SV wave (C-wave) wavefields, provide inde-

    E-Print Network [OSTI]

    Texas at Austin, University of

    Multicomponent seismic data, combining P-wave and converted P-to-SV wave (C-wave) wavefields (fast and slow) with differing polarization. The 4C, 3D ocean-bottom cable (OBC) multicomponent seismic objectives were to evaluate seismic attributes, such as VP/VS velocity ratios and Poisson's ratio derived

  11. Wave Energy Development Roadmap: Design to Commercialization

    E-Print Network [OSTI]

    Siefert, Chris

    the pathway from initial design to commercialization for Wave Energy Converter (WEC) technologies. Commercialization of a wave energy technology is embodied in the deployment of an array of WEC's, a WEC Farm. Index Terms--Wave Energy, Roadmap, Technology Readiness Levels. Numerical Modeling, Experimentation I

  12. Array Converter | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC Jump to: navigation,Summaries |AreteArianeEnergy Pvt LtdAros

  13. Converting Energy to Medical Progress

    Office of Scientific and Technical Information (OSTI)

    Biological and Environmental Research (BER) Office of Science, U.S. Department of Energy Nuclear Medicine E v e r y w h e r e i n He a l t h c a r e A n d s o do e s B E R N u...

  14. Converting acoustic energy into useful other energy forms

    DOE Patents [OSTI]

    Putterman, Seth J. (Sherman Oaks, CA); Barber, Bradley Paul (Northridge, CA); Hiller, Robert Anthony (Los Angeles, CA); Lofstedt, Ritva Maire Johanna (Los Angeles, CA)

    1997-01-01

    Sonoluminescence is an off-equilibrium phenomenon in which the energy of a resonant sound wave in a liquid is highly concentrated so as to generate flashes of light. The conversion of sound to light represents an energy amplification of eleven orders of magnitude. The flashes which occur once per cycle of the audible or ultrasonic sound fields can be comprised of over one million photons and last for less 100 picoseconds. The emission displays a clocklike synchronicity; the jitter in time between consecutive flashes is less than fifty picoseconds. The emission is blue to the eye and has a broadband spectrum increasing from 700 nanometers to 200 nanometers. The peak power is about 100 milliWatts. The initial stage of the energy focusing is effected by the nonlinear oscillations of a gas bubble trapped in the liquid. For sufficiently high drive pressures an imploding shock wave is launched into the gas by the collapsing bubble. The reflection of the shock from its focal point results in high temperatures and pressures. The sonoluminescence light emission can be sustained by sensing a characteristic of the emission and feeding back changes into the driving mechanism. The liquid is in a sealed container and the seeding of the gas bubble is effected by locally heating the liquid after sealing the container. Different energy forms than light can be obtained from the converted acoustic energy. When the gas contains deuterium and tritium there is the feasibility of the other energy form being fusion, namely including the generation of neutrons.

  15. Converting Energy to Medical Progress

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby a contractorEnergy, science,6. Radiative5 PPPL-page

  16. Wave Energy Basics

    Broader source: Energy.gov [DOE]

    Wave energy technologies extract energy directly from surface waves or from pressure fluctuations below the surface. Renewable energy analysts believe there is enough energy in ocean waves to provide up to 2 terawatts of electricity.

  17. Guidelines in Wave Energy Conversion System Design 

    E-Print Network [OSTI]

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

    2014-01-01

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

  18. Heat Pump Water Heater using Solid-State Energy Converters |...

    Energy Savers [EERE]

    Heat Pump Water Heater using Solid-State Energy Converters Heat Pump Water Heater using Solid-State Energy Converters Sheetak will work on developing a full scale prototype of its...

  19. Converting urban tree maintenance residue to energy

    SciTech Connect (OSTI)

    Murphey, W.K.; Massey, J.G.; Sumrall, A.

    1980-01-01

    Three methods of utilizing urban wood waste collected by a tree maintenance firm in Houston, Texas (handling 30,000 ton waste/year) are examined: (a) hauling to a remote landfill; (b) chipping and hauling to a (local) power plant and converting to electricity; and (c) chipping and selling to an outside firm for use as boiler fuel. Breakdown of costs are given for each method in monetary and energy terms. Method (b) was the cheapest, producing a net energy gain (870 million Btu/day), but the firm chose method (c), since it realized a direct monetary return.

  20. Analysis and Development of a Three Body Heaving Wave Energy Scott J. Beatty

    E-Print Network [OSTI]

    Victoria, University of

    Analysis and Development of a Three Body Heaving Wave Energy Converter by Scott J. Beatty BASc Body Heaving Wave Energy Converter by Scott J. Beatty BASc, University of British Columbia, 2003 A relative motion based heaving point absorber wave energy converter is being co- developed by researchers

  1. Aalborg Universitet Single stage grid converters for battery energy storage

    E-Print Network [OSTI]

    Munk-Nielsen, Stig

    Aalborg Universitet Single stage grid converters for battery energy storage Trintis, Ionut; Munk). Single stage grid converters for battery energy storage. In 5th IET International Conference on Power from vbn.aau.dk on: juli 04, 2015 #12;SINGLE STAGE GRID CONVERTERS FOR BATTERY ENERGY STORAGE I

  2. Converting energy from fusion into useful forms

    E-Print Network [OSTI]

    Kovari, M; Jenkins, I; Kiely, C

    2014-01-01

    If fusion power reactors are to be feasible, it will still be necessary to convert the energy of the nuclear reaction into usable form. The heat produced will be removed from the reactor core by a primary coolant, which might be water, helium, molten lithium-lead, molten lithium-containing salt, or CO2. The heat could then be transferred to a conventional Rankine cycle or Brayton (gas turbine) cycle. Alternatively it could be used for thermochemical processes such as producing hydrogen or other transport fuels. Fusion presents new problems because of the high energy neutrons released. These affect the selection of materials and the operating temperature, ultimately determining the choice of coolant and working cycle. The limited temperature ranges allowed by present day irradiated structural materials, combined with the large internal power demand of the plant, will limit the overall thermal efficiency. The operating conditions of the fusion power source, the materials, coolant, and energy conversion system w...

  3. Mechanical vibration to electrical energy converter

    DOE Patents [OSTI]

    Kellogg, Rick Allen (Tijeras, NM); Brotz, Jay Kristoffer (Albuquerque, NM)

    2009-03-03

    Electromechanical devices that generate an electrical signal in response to an external source of mechanical vibrations can operate as a sensor of vibrations and as an energy harvester for converting mechanical vibration to electrical energy. The devices incorporate a magnet that is movable through a gap in a ferromagnetic circuit, wherein a coil is wound around a portion of the ferromagnetic circuit. A flexible coupling is used to attach the magnet to a frame for providing alignment of the magnet as it moves or oscillates through the gap in the ferromagnetic circuit. The motion of the magnet can be constrained to occur within a substantially linear range of magnetostatic force that develops due to the motion of the magnet. The devices can have ferromagnetic circuits with multiple arms, an array of magnets having alternating polarity and, encompass micro-electromechanical (MEM) devices.

  4. Wing Wave: Feasible, Alternative, Renewable, Electrical Energy Producing Ocean Floor System

    E-Print Network [OSTI]

    Wood, Stephen L.

    and feasible alternative, renewable, electrical energy producing subsea system. Index Terms--ocean energy, wave energy, wave energy converter, WEC, electrical energy, alternative energy, hydrokinetic energy on the coasts of the United States the harvesting ocean wave energy is ideal. It is projected that wave energy

  5. SEP Success Story: State Energy Program Helping Arkansans Convert...

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

    to purchase andor convert their Arkansas-licensed vehicles to compressed natural gas (CNG). | All Rights Reserved. The Arkansas Energy Office recently launched a Compressed...

  6. Converted wave imaging in anisotropic media using sea-floor seismic data 

    E-Print Network [OSTI]

    Mancini, Fabio

    velocity ratio is derived conventionally by event matching in the P-wave and converted wave stacks. I present an attempt to use well-log derived velocity ratios to avoid this interpretative step. The velocity ratio derived from 4C seismic data is about 30...

  7. Wind turbines convert the kinetic energy in moving air into rotational energy, which in turn is converted

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Wind turbines convert the kinetic energy in moving air into rotational energy, which in turn is converted to electricity. Since wind speeds vary from month to month and second to second, the amount of electricity wind can make varies constantly. Sometimes a wind turbine will make no power at all

  8. Wave Energy challenges and possibilities

    E-Print Network [OSTI]

    © Wave Energy ­ challenges and possibilities By: Per Resen Steenstrup www.WaveStarEnergy.com Risø-R-1608(EN) 161 #12;© Wave energy is an old story.... The first wave energy patent is 200 years old. Over the last 100 years more than 200 new wave energy devices have been developped and more than 1.000 patents

  9. Strong electron dissipation by a mode converted ion hybrid (Bernstein) wave

    SciTech Connect (OSTI)

    Lashmore-Davies, C.N.; Ram, A.K.

    1996-02-01

    The fast wave approximation, extended to include the effects of electron dissipation, is used to calculate the power mode converted to the ion hybrid (Bernstein) wave in the vicinity of the ion hybrid resonance. The power absorbed from the fast wave by ion cyclotron damping and by electron Landau and transit time damping (including cross terms) is also calculated. The fast wave equation is solved for either the Budden configuration of a cut-off-resonance pair or the triplet configuration of cut-off-resonance-cut-off. The fraction mode converted is compared for the triplet case and the Budden multi-pass situation. The electron damping rate of the ion hybrid wave is obtained from the local dispersion relation and a ray tracing code is used to calculate the damping of the mode converted ion hybrid wave by the electrons as it propagates away from the resonance. Quantitative results for a range of conditions relevant to JET, TFTR and ITER are given. {copyright} {ital 1996 American Institute of Physics.}

  10. Microstructural Design for Stress Wave Energy Management /

    E-Print Network [OSTI]

    Tehranian, Aref

    2013-01-01

    Nasser, S. , 2010. Stress-wave energy management throughNemat-Nasser, Stress-wave energy management through materialconstitute pressure wave energy and/or shear wave energy.

  11. Aero-Acoustic Analysis of Wells Turbine for Ocean Wave Energy Conversion

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    Aero-Acoustic Analysis of Wells Turbine for Ocean Wave Energy Conversion Ralf Starzmann Fluid of harnessing the energy from ocean waves is the oscillating water column (OWC) device. The OWC converts

  12. Energy Savings Assessment for Digital-to-Analog Converter Boxes

    SciTech Connect (OSTI)

    Cheung, Hoi Ying Iris; Meier, Alan; Brown, Richard

    2011-01-18

    The Digital Television (DTV) Converter Box Coupon Program was administered by the U.S. government to subsidize purchases of digital-to-analog converter boxes, with up to two $40 coupons for each eligible household. In order to qualify as Coupon Eligible Converter Boxes (CECBs), these devices had to meet a number of minimum performance specifications, including energy efficiency standards. The Energy Star Program also established voluntary energy efficiency specifications that are more stringent than the CECB requirements. In this study, we measured the power and energy consumptions for a sample of 12 CECBs (including 6 Energy Star labeled models) in-use in homes and estimated aggregate energy savings produced by the energy efficiency policies. Based on the 35 million coupons redeemed through the end of the program, our analysis indicates that between 2500 and 3700 GWh per year are saved as a result of the energy efficiency policies implemented on digital-to-analog converter boxes. The energy savings generated are equivalent to the annual electricity use of 280,000 average US homes.

  13. Moving core beam energy absorber and converter

    DOE Patents [OSTI]

    Degtiarenko, Pavel V.

    2012-12-18

    A method and apparatus for the prevention of overheating of laser or particle beam impact zones through the use of a moving-in-the-coolant-flow arrangement for the energy absorbing core of the device. Moving of the core spreads the energy deposition in it in 1, 2, or 3 dimensions, thus increasing the effective cooling area of the device.

  14. Design Methodology for a SEAREV Wave Energy Marie Ruellan, Hamid BenAhmed, Bernard Multon, Christophe Josset, Aurelien Babarit,

    E-Print Network [OSTI]

    Boyer, Edmond

    1 Design Methodology for a SEAREV Wave Energy Converter Marie Ruellan, Hamid BenAhmed, Bernard by presenting two power take-off (PTO) technologies for the SEAREV wave energy converter (WEC) followed technologies in- tended to transform wave energy into electricity. The types of systems are twofold

  15. Maximal energy that can be converted by a dielectric elastomer generator Soo Jin Adrian Koh,1,2

    E-Print Network [OSTI]

    Suo, Zhigang

    generators have been designed to harvest energy from walking,5,6 ocean waves,7 wind, and combustion.8 or the voltage-charge plane Fig. 2 . A design of a generator may be represented by a cycle on either planeMaximal energy that can be converted by a dielectric elastomer generator Soo Jin Adrian Koh,1

  16. Converting chemical energy of hydrogenated fuels into electricity

    E-Print Network [OSTI]

    - 1 - Fuel Cells Converting chemical energy of hydrogenated fuels into electricity Project Description Invented in 1839, fuels cells powered the Gemini and Apollo space missions, as well as the space shuttle. Although fuel cells have been successfully used in such applications, they have proven difficult

  17. Wing Wave: Feasible, Alternative, Renewable, Electrical Energy Producing Ocean Floor System

    E-Print Network [OSTI]

    Wood, Stephen L.

    Wing Wave: Feasible, Alternative, Renewable, Electrical Energy Producing Ocean Floor System Mark, alternative energy system to convert the circular motion of ocean waves as they propagate through the sea and feasible alternative, renewable, electrical energy producing subsea system. Index Terms--ocean energy, wave

  18. California Small Hydropower and Ocean Wave Energy

    E-Print Network [OSTI]

    California Small Hydropower and Ocean Wave Energy Resources IN SUPPORT OF THE 2005 INTEGRATED....................................................................................................................... 9 Ocean Wave Energy............................................................................................................. 20 Wave Energy Conversion Technology

  19. Development of Feedforward Control Strategies for Wave Energy Conversion Technologies

    Energy Innovation Portal (Marketing Summaries) [EERE]

      The future of wave energy will depend on developing a new generation of wave energy converters (WECs) that maximize energy extraction and mitigate critical loads while reducing costs. Today’s WECs are relatively inefficient compared to their theoretical upper limit and lack the ability to concurrently maximize power capture and minimize structural loads.  The majority of existing WECs consist of fixed geometrical bodies relying predominantly on control of the power...

  20. Beam converter

    DOE Patents [OSTI]

    Poulsen, Peter

    2003-05-06

    A converter and method for converting electron energy to irradiative energy comprising foam and/or foil. Foam and foil optionally comprise a high-Z material, such as, but not limited to, tantalum.

  1. Bi-directional dc-dc Converter | Department of Energy

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

    Maryland. merit08goodarzi.pdf More Documents & Publications WBG Converters and Chargers Vehicle Technologies Office Merit Review 2014: WBG Converters and Chargers Vehicle...

  2. Electro-mechanical energy conversion system having a permanent magnet machine with stator, resonant transfer link and energy converter controls

    DOE Patents [OSTI]

    Skeist, S. Merrill; Baker, Richard H.

    2006-01-10

    An electro-mechanical energy conversion system coupled between an energy source and an energy load comprising an energy converter device including a permanent magnet induction machine coupled between the energy source and the energy load to convert the energy from the energy source and to transfer the converted energy to the energy load and an energy transfer multiplexer to control the flow of power or energy through the permanent magnetic induction machine.

  3. Low Head, Vortex Induced Vibrations River Energy Converter

    SciTech Connect (OSTI)

    Bernitsas, Michael B.; Dritz, Tad

    2006-06-30

    Vortex Induced Vibrations Aquatic Clean Energy (VIVACE) is a novel, demonstrated approach to extracting energy from water currents. This invention is based on a phenomenon called Vortex Induced Vibrations (VIV), which was first observed by Leonardo da Vinci in 1504AD. He called it ‘Aeolian Tones.’ For decades, engineers have attempted to prevent this type of vibration from damaging structures, such as offshore platforms, nuclear fuel rods, cables, buildings, and bridges. The underlying concept of the VIVACE Converter is the following: Strengthen rather than spoil vortex shedding; enhance rather than suppress VIV; harness rather than mitigate VIV energy. By maximizing and utilizing this unique phenomenon, VIVACE takes this “problem” and successfully transforms it into a valuable resource for mankind.

  4. MHK Technologies/OCEANTEC Wave Energy Converter | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar < MHKHydroInformationWECPendulor

  5. MHK Technologies/Seatricity wave energy converter | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMIS D E <Seabased <

  6. MHK Technologies/The Crestwing Wave Energy Converter | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMIS D ESurgeWEC <B1 buoy <

  7. MHK Technologies/The DEXAWAVE wave energy converter | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMIS D ESurgeWEC <B1 buoy

  8. MHK Technologies/Tunneled Wave Energy Converter TWEC | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMIS DTocardo < MHKTunkey OTEC

  9. Sandia Energy - WEC-Sim (Wave Energy Converter SIMulator)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II)GeothermalFuel MagnetizationTransportationVideos Home EC

  10. Sandia Energy - Advanced Controls of Wave Energy Converters May Increase

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation of Fe(II) byMultidayAlumni >Scientific andInstituteAdvanced Bit Development

  11. 670 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 18, NO. 2, MARCH 2003 Integrated Magnetic Full Wave Converter With

    E-Print Network [OSTI]

    Lehman, Brad

    of these circuits are being proposed in 30 W 100 W range, and have great potential for telecommunication power670 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 18, NO. 2, MARCH 2003 Integrated Magnetic Full Wave Converter With Flexible Output Inductor Liang Yan, Student Member, IEEE, Dayu Qu, Member, IEEE

  12. Evidence from P-to-S mantle converted waves for a flat b660-kmQ discontinuity beneath Iceland

    E-Print Network [OSTI]

    Foulger, G. R.

    Evidence from P-to-S mantle converted waves for a flat b660-kmQ discontinuity beneath Iceland Z. Du; accepted 19 September 2005 Available online 22 November 2005 Editor: R.D. van der Hilst Abstract Iceland discontinuity beneath central Iceland is shallow relative to peripheral regions and this was interpreted

  13. Manta Wings: Wave Energy Testing Floats to Puget Sound

    Broader source: Energy.gov [DOE]

    Columbia Power Technologies plans to test an intermediate-scale version of its wave energy converter device in Puget Sound later this year. The device, which is called Manta because its movements are similar to those of a manta stingray, sits like an iceberg on the water.

  14. Wave Energy Extraction from an Oscillating Water Column in a Truncated Circular Cylinder 

    E-Print Network [OSTI]

    Wang, Hao

    2013-07-19

    Oscillating Water Column (OWC) device is a relatively practical and convenient way that converts wave energy to a utilizable form, which is usually electricity. The OWC is kept inside a fixed truncated vertical cylinder, which is a hollow structure...

  15. Solar Power To Help Convert Carbon Dioxide Into Fuel : Renewable Energy News

    E-Print Network [OSTI]

    Lovley, Derek

    Solar Power To Help Convert Carbon Dioxide Into Fuel : Renewable Energy News TUESDAY 25 MAY, 2010 | | Solar Power To Help Convert Carbon Dioxide Into Fuel by Energy Matters Microbiologist Derek Lovley of energy, the solar panels, can also harvest energy 100 times more effectively than plants. Other

  16. Electrostatic-plasma-wave energy flux

    E-Print Network [OSTI]

    Amendt, P.; Rostoker, N.

    1984-01-01

    would reduce cross- field wave-energy convection since theor cross-field leakage of wave energy are ap- that thefeature of cross-field wave-energy transport, previous con-

  17. Microstructural Design for Stress Wave Energy Management /

    E-Print Network [OSTI]

    Tehranian, Aref

    2013-01-01

    Nasser, S. , 2010. Stress-wave energy management throughNemat-Nasser, Stress-wave energy management through materialS. , 2009. Acoustic wave-energy management in composite

  18. Electrostatic-plasma-wave energy flux

    E-Print Network [OSTI]

    Amendt, P.; Rostoker, N.

    1984-01-01

    would reduce cross- field wave-energy convection since theor cross-field leakage of wave energy are ap- that thecomposition of electrostatic-wave-energy field degrees of

  19. Microstructural Design for Stress Wave Energy Management /

    E-Print Network [OSTI]

    Tehranian, Aref

    2013-01-01

    mode of pressure wave and energy transfer into shearmode of pressure wave and energy transfer into shear mode ItNasser, S. , 2010. Stress-wave energy management through

  20. Abstract This article will begin by presenting two power take-off (PTO) technologies for the SEAREV wave energy

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    for the SEAREV wave energy converter (WEC) followed by the design methodology applied to electromagnetic with the SEAREV WEC before discussing the two conversion technologies intended to transform wave energy, including one featuring power leveling. Index Terms ­ wave energy conversion - electromagnetic generator

  1. Wave Energy Basics | Department of Energy

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

    Articles Pressure profile of a wave moving through an offshore structure. Courtesy of MMI Engineering Improving Design Methods for Fixed-Foundation Offshore Wind Energy Systems An...

  2. Study of Power Converter Topologies with Energy Recovery and grid power flow control Part B: boost converter with energy storage

    E-Print Network [OSTI]

    Rogelio, Garcia Retegui; Gustavo, Uicich; Mario, Benedetti; Gilles, Le Godec; Konstantinos, Papastergiou

    2015-01-01

    In the framework of a Transfer line (TT2) Consolidation Programme, a number of studies on Energy cycling have been commissioned. Part of this work involves the study of dierent power electronic system topologies for magnet energy recovery. In this report, the use of a boost front-end converter supplying DC link of a 4-quadrant magnet supply is analysed. The key objective of the study is to find control strategies that result in the control of the peak power required from the power network as well as to recover the magnet energy into capacitor banks with controlled voltage fluctuation. The study comprises the modelling of the system by means of the method of state averaging and the development of regulation strategies to energy management. The proposed control strategies can be divided in two groups: in the first group, the magnet current is used to define the reference for the control system, while in the second group this current is unknown and some strategies are devised to limit the power drawn from the el...

  3. Arnold Schwarzenegger DEVELOPING WAVE ENERGY IN

    E-Print Network [OSTI]

    Arnold Schwarzenegger Governor DEVELOPING WAVE ENERGY IN COASTAL CALIFORNIA: POTENTIAL SOCIO. Developing Wave Energy In Coastal California: Potential Socio-Economic And Environmental Effects. California-ECONOMIC AND ENVIRONMENTAL EFFECTS Prepared For: California Energy Commission Public Interest Energy Research Program

  4. The Utilization and Recovery of Energy from Blast Furnaces and Converters 

    E-Print Network [OSTI]

    Hegemann, K. R.; Niess, T.; Baare, R. D.

    1979-01-01

    comprising a gas cleaning unit for dust removal and a turbine for converting the recoverable thermal energy into mechanical and electrical energy. The adjustable annular gap scrubber for separating fine dust also serves as an element for regulating the gas...

  5. Wave refraction and wave energy on Cayo Arenas 

    E-Print Network [OSTI]

    Walsh, Donald Eugene

    1962-01-01

    WAVE REFRACTION AND WAVE ENERGY ON CAYO ARENAS A Thesis By Donald E. Welsh Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... January 1962 Major Subject: Physical Oceanography WAVE REFRACTION AND WAVE ENERGY ON CAYO ARENAS A Thesis Donald E. Walsh Approved as to style and content by: Chairman of the Committee ead of Department ' / January 1962 ACKNOWLEDGMENTS...

  6. Direct Drive Wave Energy Buoy

    SciTech Connect (OSTI)

    Rhinefrank, Kenneth E.; Lenee-Bluhm, Pukha; Prudell, Joseph H.; Schacher, Alphonse A.; Hammagren, Erik J.; Zhang, Zhe

    2013-07-29

    The most prudent path to a full-scale design, build and deployment of a wave energy conversion (WEC) system involves establishment of validated numerical models using physical experiments in a methodical scaling program. This Project provides essential additional rounds of wave tank testing at 1:33 scale and ocean/bay testing at a 1:7 scale, necessary to validate numerical modeling that is essential to a utility-scale WEC design and associated certification.

  7. Measurements of Mode Converted Ion Cyclotron Wave with Phase Contrast Imaging in Alcator C-Mod and Comparisons with Synthetic PCI Simulations in TORIC

    E-Print Network [OSTI]

    Tsijii, Naoto

    Mode converted ion cyclotron wave (ICW) has been observed with phase contrast imaging (PCI) in D-[superscript 3]He plasmas in Alcator C-Mod [1, 2]. The measurements were carried out with the optical heterodyne technique ...

  8. Beyond receiver functions: Passive source reverse time migration and inverse scattering of converted waves

    E-Print Network [OSTI]

    Shang, Xuefeng

    We present a wave equation prestack depth migration to image crust and mantle structures using multi-component earthquake data recorded at dense seismograph arrays. Transmitted P and S waves recorded on the surface are ...

  9. Accelerated lifetime testing of energy storage capacitors used in particle accelerators power converters

    E-Print Network [OSTI]

    Boattini, Fulvio

    2015-01-01

    Energy storage capacitors are used in large quantities in high power converters for particle accelerators. In this application capacitors see neither a DC nor an AC voltage but a combination of the two. The paper presents a new power converter explicitly designed to perform accelerated testing on these capacitors and the results of the tests.

  10. Multiport Converter Topologies for Distributed Energy System Applications 

    E-Print Network [OSTI]

    Hawke, Joshua

    2014-07-28

    . Next, three system designs are discussed: single-zone, dual-zone, and multi-zone. Each implements PSC technology and high-frequency isolated full-bridge converters to interface multiple fuel cell sources to a medium voltage grid via a single multilevel...

  11. VOLUME54, NUMBER9 PHYSICAL REVIEW LETTERS 4 MARCH1985 Conversion of Wave Energy to Magnetic Field Energy in a Plasma Torus

    E-Print Network [OSTI]

    Karney, Charles

    VOLUME54, NUMBER9 PHYSICAL REVIEW LETTERS 4 MARCH1985 Conversion of Wave Energy to Magnetic Field Energy in a Plasma Torus N. J. Fisch and C. F. F. Karney Plasma Physics Laboratory, Princeton University on the Princeton Large Torus (PLT)' have converted wave energy to poloidal field energy with the remarkable

  12. VOLUME54, NUMBER9 PHYSICAL REVIEW LETTERS 4 MARCH1985 Conversion of Wave Energy to Magnetic Field Energy in a Plasma Torus

    E-Print Network [OSTI]

    Karney, Charles

    VOLUME54, NUMBER9 PHYSICAL REVIEW LETTERS 4 MARCH1985 Conversion of Wave Energy to Magnetic Field on the Princeton Large Torus (PLT)' have converted wave energy to poloidal field energy with the remarkable Energy in a Plasma Torus N. J. Fisch and C. F. F. Karney Plasma Physics Laboratory, Princeton University

  13. Review of Methods for Modeling Wave Energy Converter Survival...

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

    and Arctic Engineering (OMAE), ASME. 7 ABS, 2011. Design standards for offshore wind farms. Tech. Rep. M10PC00105, American Bureau of Shipping, Sept. 8 ITTC, 2011....

  14. Reference Model 5 (RM5): Oscillating Surge Wave Energy Converter

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMassR&D100 Winners * Impactsand engineersAcquisition OfficereferenceReference Model

  15. MHK Technologies/DEXA Wave Converter | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050 JumpCoosSloughAquantis < MHKASCurrentStar

  16. MHK Technologies/Magnetohydrodynamic MHD Wave Energy Converter MWEC | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar < MHKHydro HelixLanglee E2Turbine

  17. Catching a Wave: Innovative Wave Energy Device Surfs for Power...

    Office of Environmental Management (EM)

    and cost-effective electricity from clean energy resources, including water. Marine and hydrokinetic (MHK) technologies, which generate power from waves, tides, or...

  18. Seminario de Matemtica Aplicada "Renowable wave energy

    E-Print Network [OSTI]

    Tradacete, Pedro

    Seminario de Matemática Aplicada "Renowable wave energy: potencial and technical challenges Abstract: Among the various renewable energy sources, ocean wave energy has been only recently investiga will be at first to introduce the potential of wave energy, as a significant, and often neglected, contributor

  19. A Novel Overtopping Wave Energy Device Concept Applied to California

    E-Print Network [OSTI]

    Imamura, John

    2009-01-01

    for overtopping wave energy devices are limited in theirhigh power output wave energy devices may be possible.design and modeling of wave energy devices. Nat- urally this

  20. Identifying two steps in the internal wave energy cascade

    E-Print Network [OSTI]

    Sun, Oliver Ming-Teh

    2010-01-01

    1.1.1 The internal wave energy cascade . . . . . . .? ? , which contain only wave energy trav- eling upward anddistinction is made between wave energy propagating upward

  1. High Gain Transformerless DC-DC Converters for Renewable Energy Sources 

    E-Print Network [OSTI]

    Denniston, Nicholas Aaron

    2011-08-08

    Renewable energy sources including photovoltaic cells, fuel cells, and wind turbines require converters with high voltage gain in order to interface with power transmission and distribution networks. These conversions are conventionally made using...

  2. Analysis of PS-converted wave seismic data in the presence of azimuthal anisotropy 

    E-Print Network [OSTI]

    Liu, Weining

    2014-11-27

    Shear-wave splitting and azimuthal variations of seismic attributes are two major anisotropic effects induced by vertically-aligned fractures. They both have influences on seismic data processing and interpretation, and ...

  3. Sliding Mode Control of Boost Converter: Application to energy storage system via supercapacitors

    E-Print Network [OSTI]

    Boyer, Edmond

    Sliding Mode Control of Boost Converter: Application to energy storage system via supercapacitors the contract Hysbus through the competitive pole (Lyon Urban Truck and Bus 2015). Keywords «Energy storage of an energy storage system based on supercapacitors technology in order to regulate the output voltage. Given

  4. Instrumentation for Monitoring around Marine Renewable Energy Converters: Workshop Final Report

    SciTech Connect (OSTI)

    Polagye, B. L.; Copping, A. E.; Brown-Saracino, J.; Suryan, R.; Kramer, S.; Smith, C.

    2014-01-14

    To better understand the state of instrumentation and capabilities for monitoring around marine energy converters, the U.S. Department of Energy directed Pacific Northwest National Laboratory and the Northwest National Marine Renewable Energy Center at the University of Washington to convene an invitation-only workshop of experts from around the world to address instrumentation needs.

  5. Wave Energy | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThinWarsaw, Poland:Energy InformationWausau High School

  6. Propulsion system for a motor vehicle using a bidirectional energy converter

    DOE Patents [OSTI]

    Tamor, Michael Alan (Toledo, OH); Gale, Allan Roy (Livonia, MI)

    1999-01-01

    A motor vehicle propulsion system includes an electrical energy source and a traction motor coupled to receive electrical energy from the electrical energy source. The system also has a first bus provided electrical energy by the electrical energy source and a second bus of relatively lower voltage than the first bus. In addition, the system includes an electrically-driven source of reaction gas for the electrical energy source, the source of reaction gas coupled to receive electrical energy from the first bus. Also, the system has an electrical storage device coupled to the second bus for storing electrical energy at the lower voltage. The system also includes a bidirectional energy converter coupled to convert electrical energy from the first bus to the second bus and from the second bus to the first bus.

  7. Harvesting Kinetic Energy with Switched-Inductor DCDC Converters

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    energy in motion may not compete with solar power but, in contrast to indoor lighting and thermal sources- power piezoelectric and electrostatic kinetic-harvesting sources. I. HARVESTING KINETIC ENERGY temperature gradients, the fundamental source from which the device draws energy [3]. Harvesting the kinetic

  8. WAVE-ENERGY DENSITY AND WAVE-MOMENTUM DENSITY OF EACH SPECIES OF A COLLISION-LESS PLASMA

    E-Print Network [OSTI]

    Cary, John R.

    2012-01-01

    A LiBRARY ANL WAVE-ENERGY DENSITY AND WAVE-MOMENTUM DENSITYof Califomia. To be in WAVE-ENERGY DENSITY AND WAVE~HOMENTUMExpress1ons for the wave-energy density and wave-momentum

  9. Using a Bore-Soliton-Splash to understand Rogue Waves, Tsunamis & Wave Energy

    E-Print Network [OSTI]

    Wirosoetisno, Djoko

    & new experiments, in portable BSS wave tank or Roombeek channel [7]. 7 New Wave Energy Device [2]. · Clarify connection Bore-Soliton-Splash with rogue waves and tsunamis. · New wave energy device

  10. Phase-Shifted Full Bridge DC-DC Converter with Energy Recovery Clamp and Reduced Circulating Current

    E-Print Network [OSTI]

    Phase-Shifted Full Bridge DC-DC Converter with Energy Recovery Clamp and Reduced Circulating@aei.com Abstract - This paper introduces a full bridge converter with reduced circulating current and a reduction bridge converter operating at 32 kHz switching frequency. Losses and efficiency of the experimental

  11. A High Frequency Isolated Current-fed Bidirectional DC/AC Converter For Grid-Tied Energy Storage System

    E-Print Network [OSTI]

    King Jet, TSENG

    2013-01-01

    AC Converter for Grid-tied Energy Storage System XhaFreh qu,low energy resources, grid-tied energy storage systems (ESS)I. INTRODUCTION Grid-tied energy storage system (ESS) is

  12. 100kW Energy Transfer Multiplexer Power Converter Prototype Development Project

    SciTech Connect (OSTI)

    S. Merrill Skeist; Richard H. (Dick) Baker; Anthony G.P. Marini; DOE Project Officer - Keith Bennett

    2006-03-21

    Project Final Report for "100kW Energy Transfer Multiplexer Power Converter Prototype Development Project" prepared under DOE grant number DE-FG36-03GO13138. This project relates to the further development and prototype construction/evaluation for the Energy Transfer Multiplexer (ETM) power converter topology concept. The ETM uses a series resonant link to transfer energy from any phase of a multiphase input to any phase of a multiphase output, converting any input voltage and frequency to any output voltage and frequency. The basic form of the ETM converter consists of an eight (8)-switch matrix (six phase power switches and two ground power switches) and a series L-C resonant circuit. Electronic control of the switches allows energy to be transferred in the proper amount from any phase to any other phase. Depending upon the final circuit application, the switches may be either SCRs or IGBTs. The inherent characteristics of the ETM converter include the following: Power processing in either direction (bidirectional); Large voltage gain without the need of low frequency magnetics; High efficiency independent of output load and frequency; Wide bandwidth with fast transient response and; Operation as a current source. The ETM is able to synthesize true sinusoidal waveforms with low harmonic distortions. For a low power PM wind generation system, the ETM has the following characteristics and advantages: It provides voltage gain without the need of low frequency magnetics (DC inductors) and; It has constant high efficiency independent of the load. The ETM converter can be implemented into a PM wind power system with smaller size, reduced weight and lower cost. As a result of our analyses, the ETM offers wind power generation technology for the reduction of the cost and size as well as the increase in performance of low power, low wind speed power generation. This project is the further theoretical/analytical exploration of the ETM converter concept in relationship to PM wind power generator applications in the 100kW and under power range. The theoretical/analytical and bench scale work focuses on simplifying the basic ETM converter topology (in terms of parts count and complexity) for the specific application of the low power PM system. The project goals and objectives were for Spellman HV will develop a 100kW prototype ETM power converter based on paralleled lower ratings converters. The proposed configuration of this prototype is a 100kW rated converter comprised of four (4) 34kW rated modules connected in parallel (the fourth converter is included to demonstrate N+1 fault tolerance). This approach is more viable as there is lower technological risk involved in developing a 34kW-rated converter than a single 100kW unit. The modular system approach should have a lower deployment and service cost over a single unit system, because of the economics of scale (smaller units at a higher volume means lower manufacturing cost) and because of improved serviceability (a non-redundant power system with one failed module will still operate at a lower power level). There is also the added benefit that greater commercial application and acceptance should be achieved by having a modular system available in which fault tolerance (N+1 or 2N) is a feature. This modular approach would allow the output power to be increased by adding more paralleled converters. Thus, the maximum output power of the overall power system is a function of the interconnection medium (the hot swap connection subsystem), rather than the ratings of a single module. The project was implemented with Spellman HV acting as the program management and production assembly and test facility; The Baker Company acting as a technical consultant and resource when required; and dtm Associates acting as the design/development resource for the hardware development of the 100kW ETM converter prototype.

  13. The remote Maxwell demon as energy down-converter

    E-Print Network [OSTI]

    S. Hossenfelder

    2014-08-17

    It is demonstrated that Maxwell's demon can be used to allow a machine to extract energy from a heat bath by use of information that is processed by the demon at a remote location. The model proposed here effectively replaces transmission of energy by transmission of information. For that we use a feedback protocol that enables a net gain by stimulating emission in selected fluctuations around thermal equilibrium. We estimate the down conversion rate and the efficiency of energy extraction from the heat bath.

  14. Use of a full wave correct-by-design command to control a multilevel modular converter

    E-Print Network [OSTI]

    Doyen, Laurent

    ). It also used in renewable energies for grid connection of large offshore wind farm for example the BorWin1

  15. Bi-directional dc-dc Converter | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels Researchof Energy| DepartmentofEnergyiT HelpsBeyond Design10

  16. Bi-directional dc-dc Converter | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based Fuels Researchof Energy| DepartmentofEnergyiT HelpsBeyond

  17. Wave Energy Centre | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,VillageWarrensourceCentre Jump to: navigation, search Name: Wave

  18. Wave Energy Resource Assessment | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing ToolInternationalReport FY2014 - Employers TakeVoteWaterWave Energy Resource Assessment

  19. State Energy Program Helping Arkansans Convert to Compressed Natural Gas |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo.Hydrogen4EnergySolidof2StandardFOA InformationalDepartment of

  20. A High Frequency Isolated Current-fed Bidirectional DC/AC Converter For Grid-Tied Energy Storage System

    E-Print Network [OSTI]

    King Jet, TSENG

    2013-01-01

    AC Converter for Grid-tied Energy Storage System XhaFreh qu,resources, grid-tied energy storage systems (ESS) will beincreasingly incorporated. Energy storage devices (ESD) such

  1. TAS-2013-0043 1 Abstract--Fuel cells are electrochemical energy converters

    E-Print Network [OSTI]

    Boyer, Edmond

    TAS-2013-0043 1 Abstract--Fuel cells are electrochemical energy converters which allow generation. Fuel cells are then by essence low voltage sources , so that for most practical applications of the perfectly direct current relies upon a fuel cell fed by hydrogen. The main advantages to be taken from fuel

  2. A Universal Level Converter Towards the Realization of Energy Efficient Implantable Drug Delivery

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    A Universal Level Converter Towards the Realization of Energy Efficient Implantable Drug Delivery VLSI Design and CAD Laboratory (VDCL), University of North Texas, Denton, TX 76203, USA. 2 Electrical many side effects, such as reduction in battery life time, increase in operating tempera- ture

  3. Multilevel Converters as a Utility Interface for Renewable Energy Systems Leon M. Tolbert Fang Z. Peng

    E-Print Network [OSTI]

    Tolbert, Leon M.

    interface, power quality I. INTRODUCTION Electric power production in the 21st Century will see dramatic suitable for flexible ac transmission systems (FACTS) and custom power applications [6, 7]. The useMultilevel Converters as a Utility Interface for Renewable Energy Systems Leon M. Tolbert Fang Z

  4. Energy Department Announces $10 million for Wave Energy Demonstration...

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

    million to test prototypes designed to generate clean, renewable electricity from ocean waves and help diversify America's energy portfolio. The Energy Department-supported...

  5. Benchmark Modeling of the Near-Field and Far-Field Wave Effects of Wave Energy Arrays

    SciTech Connect (OSTI)

    Rhinefrank, Kenneth E.; Haller, Merrick C.; Ozkan-Haller, H. Tuba

    2013-01-26

    This project is an industry-led partnership between Columbia Power Technologies and Oregon State University that will perform benchmark laboratory experiments and numerical modeling of the near-field and far-field impacts of wave scattering from an array of wave energy devices. These benchmark experimental observations will help to fill a gaping hole in our present knowledge of the near-field effects of multiple, floating wave energy converters and are a critical requirement for estimating the potential far-field environmental effects of wave energy arrays. The experiments will be performed at the Hinsdale Wave Research Laboratory (Oregon State University) and will utilize an array of newly developed Buoys������� that are realistic, lab-scale floating power converters. The array of Buoys will be subjected to realistic, directional wave forcing (1:33 scale) that will approximate the expected conditions (waves and water depths) to be found off the Central Oregon Coast. Experimental observations will include comprehensive in-situ wave and current measurements as well as a suite of novel optical measurements. These new optical capabilities will include imaging of the 3D wave scattering using a binocular stereo camera system, as well as 3D device motion tracking using a newly acquired LED system. These observing systems will capture the 3D motion history of individual Buoys as well as resolve the 3D scattered wave field; thus resolving the constructive and destructive wave interference patterns produced by the array at high resolution. These data combined with the device motion tracking will provide necessary information for array design in order to balance array performance with the mitigation of far-field impacts. As a benchmark data set, these data will be an important resource for testing of models for wave/buoy interactions, buoy performance, and far-field effects on wave and current patterns due to the presence of arrays. Under the proposed project we will initiate high-resolution (fine scale, very near-field) fluid/structure interaction simulations of buoy motions, as well as array-scale, phase-resolving wave scattering simulations. These modeling efforts will utilize state-of-the-art research quality models, which have not yet been brought to bear on this complex problem of large array wave/structure interaction problem.

  6. On the Energy of Rotating Gravitational Waves

    E-Print Network [OSTI]

    Bahram Mashhoon; James C. McClune; Enrique Chavez; Hernando Quevedo

    1996-09-06

    A class of solutions of the gravitational field equations describing vacuum spacetimes outside rotating cylindrical sources is presented. A subclass of these solutions corresponds to the exterior gravitational fields of rotating cylindrical systems that emit gravitational radiation. The properties of these rotating gravitational wave spacetimes are investigated. In particular, we discuss the energy density of these waves using the gravitational stress-energy tensor.

  7. High-efficiency, monolithic, multi-bandgap, tandem, photovoltaic energy converters

    DOE Patents [OSTI]

    Wanlass, Mark W

    2014-05-27

    A monolithic, multi-bandgap, tandem solar photovoltaic converter has at least one, and preferably at least two, subcells grown lattice-matched on a substrate with a bandgap in medium to high energy portions of the solar spectrum and at least one subcell grown lattice-mismatched to the substrate with a bandgap in the low energy portion of the solar spectrum, for example, about 1 eV.

  8. High-efficiency, monolithic, multi-bandgap, tandem photovoltaic energy converters

    DOE Patents [OSTI]

    Wanlass, Mark W. (Golden, CO)

    2011-11-29

    A monolithic, multi-bandgap, tandem solar photovoltaic converter has at least one, and preferably at least two, subcells grown lattice-matched on a substrate with a bandgap in medium to high energy portions of the solar spectrum and at least one subcell grown lattice-mismatched to the substrate with a bandgap in the low energy portion of the solar spectrum, for example, about 1 eV.

  9. Renewable Energy Wave Pumps | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, New York: Energy ResourcesProducts LLC JumpTech SchoolWave Pumps

  10. Carnegie Wave Energy Limited | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank,Cammack Village, Arkansas:Fund forCarnegie Wave Energy Limited Jump to:

  11. Wave spectral energy variability in the northeast Peter D. Bromirski

    E-Print Network [OSTI]

    Bromirski, Peter D.

    Wave spectral energy variability in the northeast Pacific Peter D. Bromirski Integrative January 2005; published 8 March 2005. [1] The dominant characteristics of wave energy variability] s wave spectral energy components are considered separately. Empirical orthogonal function (EOF) analyses

  12. Direct Drive Wave Energy Buoy – 33rd scale experiment

    SciTech Connect (OSTI)

    Rhinefrank, Kenneth E.; Lenee-Bluhm, Pukha; Prudell, Joseph H.; Schacher, Alphonse A.; Hammagren, Erik J.; Zhang, Zhe

    2013-07-29

    Columbia Power Technologies (ColPwr) and Oregon State University (OSU) jointly conducted a series of tests in the Tsunami Wave Basin (TWB) at the O.H. Hinsdale Wave Research Laboratory (HWRL). These tests were run between November 2010 and February 2011. Models at 33rd scale representing Columbia Power’s Manta series Wave Energy Converter (WEC) were moored in configurations of one, three and five WEC arrays, with both regular waves and irregular seas generated. The primary research interest of ColPwr is the characterization of WEC response. The WEC response will be investigated with respect to power performance, range of motion and generator torque/speed statistics. The experimental results will be used to validate a numerical model. The primary research interests of OSU include an investigation into the effects of the WEC arrays on the near- and far-field wave propagation. This report focuses on the characterization of the response of a single WEC in isolation. To facilitate understanding of the commercial scale WEC, results will be presented as full scale equivalents.

  13. Energy-momentum relation for solitary waves of relativistic wave equations

    E-Print Network [OSTI]

    T. V. Dudnikova; A. I. Komech; H. Spohn

    2005-08-23

    Solitary waves of relativistic invariant nonlinear wave equation with symmetry group U(1) are considered. We prove that the energy-momentum relation for spherically symmetric solitary waves coincides with the Einstein energy-momentum relation for point particles.

  14. Mapping and Assessment of the United States Ocean Wave Energy...

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

    Mapping and Assessment of the United States Ocean Wave Energy Resource Mapping and Assessment of the United States Ocean Wave Energy Resource This report describes the analysis and...

  15. Proceedings of the Hydrokinetic and Wave Energy Technologies...

    Office of Environmental Management (EM)

    Proceedings of the Hydrokinetic and Wave Energy Technologies Technical and Environmental Issues Workshop Proceedings of the Hydrokinetic and Wave Energy Technologies Technical and...

  16. Advancing Technology Readiness: Wave Energy Testing and Demonstration...

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

    Advancing Technology Readiness: Wave Energy Testing and Demonstration Advancing Technology Readiness: Wave Energy Testing and Demonstration March 6, 2014 - 1:23pm Addthis Northwest...

  17. Wave Energy Harvesting unmanned maritime vehicle, Concept and Applications

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    Wave Energy Harvesting unmanned maritime vehicle, Concept and Applications Justin Manley Senior). By harvesting abundant natural energy Wave Gliders provide a persistent ocean presence to commercial scientific

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

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

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

  19. Counting energy packets in the electromagnetic wave

    E-Print Network [OSTI]

    Stefan Popescu; Bernhard Rothenstein

    2007-05-18

    We discuss the concept of energy packets in respect to the energy transported by electromagnetic waves and we demonstrate that this physical quantity can be used in physical problems involving relativistic effects. This refined concept provides results compatible to those obtained by simpler definition of energy density when relativistic effects apply to the free electromagnetic waves. We found this concept further compatible to quantum theory perceptions and we show how it could be used to conciliate between different physical approaches including the classical electromagnetic wave theory, the special relativity and the quantum theories.

  20. Wave Energy Development in Oregon Licensing & Permitting Requirements

    E-Print Network [OSTI]

    July 09 Wave Energy Development in Oregon Licensing & Permitting Requirements Prepared by Pacific Energy Ventures on behalf of the Oregon Wave Energy Trust w w w . o r e g o n w a v e . o r g #12;This study was commissioned by Oregon Wave Energy Trust. Oregon Wave Energy Trust is funded by the Oregon

  1. The worldwide demand for green energy systems is evident. In this context, wind energy converters will play a paramount role. Extending the service life of a

    E-Print Network [OSTI]

    Stanford University

    question for renewable wind energy systems is, how the operating costs and utility charges should be boredABSTRACT The worldwide demand for green energy systems is evident. In this context, wind energy converters will play a paramount role. Extending the service life of a wind energy converter translates

  2. WAVE-ENERGY DENSITY AND WAVE-MOMENTUM DENSITY OF EACH SPECIES OF A COLLISION-LESS PLASMA

    E-Print Network [OSTI]

    Cary, John R.

    2012-01-01

    case, the electrons have negative wave energy for 2w ne w wave energy for 2w .w > 0 nl Hence, unstable waves with negative phase velocity,

  3. Wave Energy Ecological Effects Workshop page 1 of 4 Ecological Effects of Wave Energy Development in the Pacific Northwest

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    Wave Energy Ecological Effects Workshop page 1 of 4 Ecological Effects of Wave Energy Development the capacity to harvest wave energy off its coast as a clean, renewable resource. An important part of moving this agenda forward must include understanding the potential effects of wave energy technology

  4. Research and Technology in Wave Energy for Electric Mobility

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    Research and Technology in Wave Energy for Electric Mobility Reza Ghorbani Assistant Professor marine energy resources that are available for our utilization. These include wave energy, energy generated by ocean current and energy extraction through ocean thermal conversion (OTEC). For wave energy

  5. Photovoltaic (PV)energy conversion is a rapidly growing technology for converting solar energy into electricity. The current production is over 20

    E-Print Network [OSTI]

    Tsymbal, Evgeny Y.

    Photovoltaic (PV)energy conversion is a rapidly growing technology for converting solar energy polymers, is making rapid strides towards becoming the low cost material of choice for PV energy conversion

  6. Soft Capacitors for Wave Energy Harvesting

    E-Print Network [OSTI]

    Karsten Ahnert; Markus Abel; Matthias Kollosche; Per Jørgen Jørgensen; Guggi Kofod

    2011-10-14

    Wave energy harvesting could be a substantial renewable energy source without impact on the global climate and ecology, yet practical attempts have struggle d with problems of wear and catastrophic failure. An innovative technology for ocean wave energy harvesting was recently proposed, based on the use of soft capacitors. This study presents a realistic theoretical and numerical model for the quantitative characterization of this harvesting method. Parameter regio ns with optimal behavior are found, and novel material descriptors are determined which simplify analysis dramatically. The characteristics of currently ava ilable material are evaluated, and found to merit a very conservative estimate of 10 years for raw material cost recovery.

  7. Wave equations with energy dependent potentials

    E-Print Network [OSTI]

    J. Formanek; R. J. Lombard; J. Mares

    2003-09-22

    We study wave equations with energy dependent potentials. Simple analytical models are found useful to illustrate difficulties encountered with the calculation and interpretation of observables. A formal analysis shows under which conditions such equations can be handled as evolution equation of quantum theory with an energy dependent potential. Once these conditions are met, such theory can be transformed into ordinary quantum theory.

  8. Design and Fabrication of a Micro Electrostatic Vibration-to-Electricity Energy Converter

    E-Print Network [OSTI]

    Chiu, Yi; Chu, Yu-Shan

    2007-01-01

    This paper presents a micro electrostatic vibration-toelectricity energy converter. For the 3.3 V supply voltage and 1cm2 chip area constraints, optimal design parameters were found from theoretical calculation and Simulink simulation. In the current design, the output power is 200 $\\mu$W/cm2 for the optimal load of 8 M\\Omega. The device was fabricated in a silicon-on-insulator (SOI) wafer. Mechanical and electrical measurements were conducted. Residual particles caused shortage of the variable capacitor and the output power could not be measured. Device design and fabrication processes are being refined.

  9. Advanced, High Power, Next Scale, Wave Energy Conversion Device

    SciTech Connect (OSTI)

    Mekhiche, Mike; Dufera, Hiz; Montagna, Deb

    2012-10-29

    The project conducted under DOE contract DE?EE0002649 is defined as the Advanced, High Power, Next Scale, Wave Energy Converter. The overall project is split into a seven?stage, gated development program. The work conducted under the DOE contract is OPT Stage Gate III work and a portion of Stage Gate IV work of the seven stage product development process. The project effort includes Full Concept Design & Prototype Assembly Testing building on our existing PowerBuoy? technology to deliver a device with much increased power delivery. Scaling?up from 150kW to 500kW power generating capacity required changes in the PowerBuoy design that addressed cost reduction and mass manufacturing by implementing a Design for Manufacturing (DFM) approach. The design changes also focused on reducing PowerBuoy Installation, Operation and Maintenance (IO&M) costs which are essential to reducing the overall cost of energy. In this design, changes to the core PowerBuoy technology were implemented to increase capability and reduce both CAPEX and OPEX costs. OPT conceptually envisaged moving from a floating structure to a seabed structure. The design change from a floating structure to seabed structure would provide the implementation of stroke? unlimited Power Take?Off (PTO) which has a potential to provide significant power delivery improvement and transform the wave energy industry if proven feasible.

  10. Energy flux of timeharmonic waves in anisotropic dissipative media

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    Energy flux of time­harmonic waves in anisotropic dissipative media Vlastislav Ÿ Cerven/transmission problem. Energy flux quantities related to the summary wavefield, composed of several waves, are derived in the summary energy flux in addition to the energy fluxes of the individual waves. The interaction energy

  11. Summary of PIER-Funded Wave Energy Research

    E-Print Network [OSTI]

    CALIFORNIA ENERGY COMMISSION Summary of PIER-Funded Wave Energy Research STAFFREPORT MARCH 2008 CEC. Please cite this report as follows: PIER 2007. Summary of PIER Funded Wave Energy Research, California Interest Energy Research Programfunded research in wave energy conversion and discusses the program's view

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

    E-Print Network [OSTI]

    Li, Bin

    2012-11-29

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

  13. Energy-momentum Density of Gravitational Waves

    E-Print Network [OSTI]

    Amir M. Abbassi; Saeed Mirshekari

    2014-11-29

    In this paper, we elaborate the problem of energy-momentum in general relativity by energy-momentum prescriptions theory. Our aim is to calculate energy and momentum densities for the general form of gravitational waves. In this connection, we have extended the previous works by using the prescriptions of Bergmann and Tolman. It is shown that they are finite and reasonable. In addition, using Tolman prescription, exactly, leads to same results that have been obtained by Einstein and Papapetrou prescriptions.

  14. Creating systems that effectively convert energy, such as efficient solar cells and electrochemical batteries, has been a

    E-Print Network [OSTI]

    Reisslein, Martin

    SEMTE abstract Creating systems that effectively convert energy, such as efficient solar cells stimuli, the solar energy from sunlight, and the mechanical motion is commonplace, indeed fundamental and electrochemical batteries, has been a longstanding scientific pursuit, especially given the global energy

  15. On the conversion of blast wave energy into radiation in active galactic nuclei and gamma-ray bursts

    E-Print Network [OSTI]

    Martin Pohl; Reinhard Schlickeiser

    1999-11-24

    It has been suggested that relativistic blast waves may power the jets of AGN and gamma-ray bursts (GRB). We address the important issue how the kinetic energy of collimated blast waves is converted into radiation. It is shown that swept-up ambient matter is quickly isotropised in the blast wave frame by a relativistic two-stream instability, which provides relativistic particles in the jet without invoking any acceleration process. The fate of the blast wave and the spectral evolution of the emission of the energetic particles is therefore solely determined by the initial conditions. We compare our model with existing multiwavelength data of AGN and find remarkable agreement.

  16. Sandia Energy - SNL-SWAN (Sandia National Laboratories - Simulating...

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

    (Sandia National Laboratories - Simulating WAves Nearshore) is an open source wave energy converter (WEC) array simulation tool. The code is a modification of the open source...

  17. Energy Department Kicks Off MHK Technologies Coding Challenge...

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

    of programmers, to develop a computational model for calculating the response of a wave energy converter (WEC) device to waves with given heights and periods. With support...

  18. Advancing Technology Readiness: Wave Energy Testing and Demonstration...

    Energy Savers [EERE]

    Addthis Northwest Energy Innovations, in partnership with the Northwest National Marine Renewable Energy Center (NNMREC), verified the functionality of the Wave Energy...

  19. 2007 Survey of Energy Resources World Energy Council 2007 Wave Energy COUNTRY NOTES

    E-Print Network [OSTI]

    2007 Survey of Energy Resources World Energy Council 2007 Wave Energy 550 COUNTRY NOTES The following Country Notes on Wave Energy have been compiled by Tom Thorpe and the Editors. Every effort has been made to be comprehensive by making contact with all known wave energy developers. However

  20. On the Use of Computational Models for Wave Climate Assessment in Support of the Wave Energy Industry

    E-Print Network [OSTI]

    Victoria, University of

    On the Use of Computational Models for Wave Climate Assessment in Support of the Wave Energy On the Use of Computational Models for Wave Climate Assessment in Support of the Wave Energy Industry Effective, economic extraction of ocean wave energy requires an intimate under- standing of the ocean wave

  1. Spectral Cascade and Energy Dissipation in Kinetic Alfven Wave Turbulence

    E-Print Network [OSTI]

    Lin, Zhihong

    Spectral Cascade and Energy Dissipation in Kinetic Alfv´en Wave Turbulence Xi Cheng, Zhihong Lin energy sources at large spatial scales. The energy of these non- linearly interacting Alfven waves. 2000). The wave-particle energy exchange rates of these channels depend on the spectral properties near

  2. Anomalous electron-ion energy coupling in electron drift wave turbulence

    E-Print Network [OSTI]

    Zhao, Lei

    annulus arises due to a wave energy flux differential acrossprincipal collisionless wave energy dissipation channel inOn the other hand, wave energy can be dissipated by ion

  3. Liquid metal thermal electric converter

    DOE Patents [OSTI]

    Abbin, Joseph P. (Albuquerque, NM); Andraka, Charles E. (Albuquerque, NM); Lukens, Laurance L. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM)

    1989-01-01

    A liquid metal thermal electric converter which converts heat energy to electrical energy. The design of the liquid metal thermal electric converter incorporates a unique configuration which directs the metal fluid pressure to the outside of the tube which results in the structural loads in the tube to be compressive. A liquid metal thermal electric converter refluxing boiler with series connection of tubes and a multiple cell liquid metal thermal electric converter are also provided.

  4. Wave Turbulence in Superfluid 4 Energy Cascades, Rogue Waves & Kinetic Phenomena

    E-Print Network [OSTI]

    Fominov, Yakov

    Outline Wave Turbulence in Superfluid 4 He: Energy Cascades, Rogue Waves & Kinetic Phenomena Conference, Chernogolovka, 3 August 2009 McClintock Efimov Ganshin Kolmakov Mezhov-Deglin Wave Turbulence in Superfluid 4 He #12;Outline Outline 1 Introduction Motivation 2 Modelling wave turbulence Need for models

  5. WAVE ENERGY RESOURCE CHARACTERIZATION US NAVY WAVE ENERGY TEST SITE

    E-Print Network [OSTI]

    the islands of Oahu, Maui, Kauai, and Hawai`i from 1979 to 2013. The wind forcing includes the Climate IN HAWAI`I Prepared by: Ning Li and Kwok Fai Cheung Department of Ocean and Resources Engineering University of Hawai`i Prepared for: luisvega@hawaii.edu Hawai`i National Marine Renewable Energy Center Hawai`i

  6. Sheets Wave Basin | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing Capacity for Low EmissionTianhongKansas: Energy Resources JumpSheets Wave

  7. Revamped Simulation Tool to Power Up Wave Energy Development...

    Energy Savers [EERE]

    Revamped Simulation Tool to Power Up Wave Energy Development Revamped Simulation Tool to Power Up Wave Energy Development May 21, 2015 - 2:40pm Addthis Revamped Simulation Tool to...

  8. WAVE-ENERGY DENSITY AND WAVE-MOMENTUM DENSITY OF EACH SPECIES OF A COLLISION-LESS PLASMA

    E-Print Network [OSTI]

    Cary, John R.

    2012-01-01

    case, the electrons have negative wave energy for 2w ne w wave energy for 2w . > w > 0 nlw/k to the negative wave energy of the electrons. positive

  9. Gravitational wave energy spectrum of hyperbolic encounters

    E-Print Network [OSTI]

    Lorenzo De Vittori; Philippe Jetzer; Antoine Klein

    2012-07-23

    The emission of gravitational waves is studied for a system of massive objects interacting on hyperbolic orbits within the quadrupole approximation following the work of Capozziello et al. Here we focus on the derivation of an analytic formula for the energy spectrum of the emitted waves. We checked numerically that our formula is in agreement with the two limiting cases for which results were already available: for the eccentricity {\\epsilon} = 1, the parabolic case whose spectrum was computed by Berry and Gair, and the large {\\epsilon} limit with the formula given by Turner.

  10. Gravitational wave energy spectrum of hyperbolic encounters

    E-Print Network [OSTI]

    De Vittori, Lorenzo; Klein, Antoine

    2012-01-01

    The emission of gravitational waves is studied for a system of massive objects interacting on hyperbolic orbits within the quadrupole approximation following the work of Capozziello et al. Here we focus on the derivation of an analytic formula for the energy spectrum of the emitted waves. We checked numerically that our formula is in agreement with the two limiting cases for which results were already available: for the eccentricity {\\epsilon} = 1, the parabolic case whose spectrum was computed by Berry and Gair, and the large {\\epsilon} limit with the formula given by Turner.

  11. Direct Drive Wave Energy Buoy

    SciTech Connect (OSTI)

    Rhinefrank, Ken

    2011-11-02

    Presentation from the 2011 Water Peer Review in which principal investigator discusses project progress and results for this project which will be used to inform the utility-scale design process, improve cost estimates, accurately forecast energy production and to observe system operation and survivability.

  12. Ecological Effects of Wave Energy Development in the Pacific Northwest

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    ......................................................................................................7 The Technology: Wave Energy Development on the West Coast Mirko Previsic, re vision consultingEcological Effects of Wave Energy Development in the Pacific Northwest A Scientific Workshop Technical Memorandum NMFS-F/SPO-92 #12;#12;Ecological Effects of Wave Energy Development in the Pacific

  13. Peculiarities in the energy transfer by waves on strained strings

    E-Print Network [OSTI]

    Butikov, Eugene

    Peculiarities in the energy transfer by waves on strained strings Eugene I. Butikov St. Petersburg of elastic potential energy associated with waves in a stretched string is discussed. The influence of nonlinear coupling between transverse and longitudinal waves on the density of energy is investigated

  14. E2I EPRI Assessment Offshore Wave Energy Conversion Devices

    E-Print Network [OSTI]

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

  15. Ecological Effects of Wave Energy Development in the Pacific Northwest

    E-Print Network [OSTI]

    Ecological Effects of Wave Energy Development in the Pacific Northwest A Scientific Workshop Technical Memorandum NMFS-F/SPO-92 #12;#12;Ecological Effects of Wave Energy Development in the Pacific Service; Justin Klure, Oregon Wave Energy Trust; Greg McMurray, Oregon Department of Land Conservation

  16. Wave Energy Resources Representative Sites Around the Hawaiian Islands

    E-Print Network [OSTI]

    Wave Energy Resources for Representative Sites Around the Hawaiian Islands Prepared by: Luis A Foreword This report provides wave energy resource information required to select coastal segments for specific wave-energy-conversion (WEC) technology and to initiate engineering design incorporating

  17. Sandia Energy - Sandia Publishes Five Reports on the Environmental...

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

    Publishes Five Reports on the Environmental Effects of Wave-Energy Converters Home Renewable Energy Energy Water Power News News & Events Computational Modeling & Simulation Sandia...

  18. Energy conversion Subject Information

    E-Print Network [OSTI]

    Greff, Isabelle

    The purpose of this course is to study the different ways of converting energy resources into useful energy thermal energy system. Wave energy: available resource, Wave energy converters (Oscillating water column from geothermal resources. Efficiency of power production from geothermal resources, economic aspects

  19. Wave Basin | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,VillageWarrensource HistoryOregon:WattQuizWaunitaWauseon,Basin

  20. Energy 101: Marine and Hydrokinetic Energy

    ScienceCinema (OSTI)

    None

    2014-06-26

    See how marine and hydrokinetic technologies harness the energy of the ocean's waves, tides, and currents and convert it into electricity to power our homes, buildings and cities.

  1. Energy 101: Marine and Hydrokinetic Energy

    SciTech Connect (OSTI)

    2013-04-29

    See how marine and hydrokinetic technologies harness the energy of the ocean's waves, tides, and currents and convert it into electricity to power our homes, buildings and cities.

  2. MHK Technologies/Multi Absorbing Wave Energy Converter MAWEC | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar < MHKHydroInformation Multi Absorbing

  3. MHK Technologies/Uppsala Seabased AB Wave Energy Converter | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMIS DTocardo <Cross flow Turbine

  4. Leancon Wave Energy | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma, Arizona: Energy ResourcesProjectMississippi: EnergyLawrieEdgeLeake

  5. Sandia Energy - EC Publications

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

    Wave Energy (26)Tara Camacho-Lopez2015-04-06T22:15:34+00:00 Order by: Title Date added Download count Development and Demonstration of the WEC-Sim Wave Energy Converter Simulation...

  6. Sandia Energy - SNL-SWAN Beta Code Development: Frequency-Dependent...

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

    SNL-SWAN Beta Code Development: Frequency-Dependent Wave-Energy Converter Module Home Renewable Energy Energy Water Power News News & Events Computational Modeling & Simulation...

  7. Sandia Energy - Joint Sandia-DOE-HMRC Testing of a Floating Oscillatin...

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

    Sandia-DOE-HMRC Testing of a Floating Oscillating Water Column Wave Energy Converter Device Home Renewable Energy Energy Water Power Partnership News News & Events Joint...

  8. Sandia Energy - SNL-SWAN Beta Code Development: Frequency-Dependent...

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

    Energy Energy Water Power SNL-SWAN Beta Code Development: Frequency-Dependent Wave-Energy Converter (WEC) Module Previous Next SNL-SWAN Beta Code Development:...

  9. Internal energy relaxation in shock wave structure

    SciTech Connect (OSTI)

    Josyula, Eswar, E-mail: Eswar.Josyula@us.af.mil; Suchyta, Casimir J. [Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States)] [Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433 (United States); Boyd, Iain D. [University of Michigan, Ann Arbor, Michigan 48109 (United States)] [University of Michigan, Ann Arbor, Michigan 48109 (United States); Vedula, Prakash [University of Oklahoma, Norman, Oklahoma 73019 (United States)] [University of Oklahoma, Norman, Oklahoma 73019 (United States)

    2013-12-15

    The Wang Chang-Uhlenbeck (WCU) equation is numerically integrated to characterize the internal structure of Mach 3 and Mach 5 shock waves in a gas with excitation in the internal energy states for the treatment of inelastic collisions. Elastic collisions are modeled with the hard sphere collision model and the transition rates for the inelastic collisions modified appropriately using probabilities based on relative velocities of the colliding particles. The collision integral is evaluated by the conservative discrete ordinate method [F. Tcheremissine, “Solution of the Boltzmann kinetic equation for high-speed flows,” Comput. Math. Math. Phys. 46, 315–329 (2006); F. Cheremisin, “Solution of the Wang Chang-Uhlenbeck equation,” Dokl. Phys. 47, 487–490 (2002)] developed for the Boltzmann equation. For the treatment of the diatomic molecules, the internal energy modes in the Boltzmann equation are described quantum mechanically given by the WCU equation. As a first step in the treatment of the inelastic collisions by the WCU equation, a two- and three-quantum system is considered to study the effect of the varying of (1) the inelastic cross section and (2) the energy gap between the quantum energy states. An alternative method, the direct simulation Monte Carlo method, is used for the Mach 3 shock wave to ensure the consistency of implementation in the two methods and there is an excellent agreement between the two methods. The results from the WCU implementation showed consistent trends for the Mach 3 and Mach5 standing shock waves simulations. Inelastic contributions change the downstream equilibrium state and allow the flow to transition to the equilibrium state further upstream.

  10. Sandia Energy - Resource Characterization

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

    siting and device deployment. Sandia develops and compiles resource assessments for potential and existing wave energy converter test and deployment sites. We utilize consistent,...

  11. Sandia Energy - Water Power

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

    6, a backward--bent duct buoy (BBDB) oscillating water column wave energy converter design. The team from HMRC included Tom Walsh, Brian Holmes, Florent Thiebaut, Neil...

  12. Sandia Energy - EC Publications

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

    project to benchmark a set of marine and hydrokinetic technologies including current (tidal, open-ocean, and river) turbines and wave energy converters. The objectives of the...

  13. Sandia Energy - EC Publications

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

    motions from Morison Equation forces for a floating Backward Bent Duct Buoy (BBDB). This Wave Energy Converter (WEC) is a particular style of Oscillating Water Column (OWC). The...

  14. Sandia Energy - EC Publications

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

    (NREL) and Sandia National Laboratories (SNL) have developed WEC---Sim to provide the wave energy converter WEC) design community with an open---source simulation tool....

  15. Sandia Energy - EC Publications

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

    model developed by Marco Alves at the Insituto Superior Tecnico for the analysis of wave energy converter devices. It has been adapted from its original form and restructured...

  16. Apparatus for transmitting power obtained by converting the exhaust energy of an engine

    SciTech Connect (OSTI)

    Miyajima, H.

    1988-08-30

    This patent describes an apparatus for transmitting power obtained by converting the exhaust energy of a primary engine, the primary engine having a crank shaft and an exhaust passage for passing exhaust gas from the engine. The apparatus consists of: an output turbine having an output shaft and an intake port coupled to the exhaust passage; a compressor mounted on the output shaft of the turbine and including an outlet port; a rotary type engine having a double jointed trochoidal shaped rotor housing, the housing having an expansion chamber with an intake port and an outlet port and a compression chamber, the engine further comprising an eccentrically rotatable generally triangular shaped rotor mounted within the housing and a rotor shaft coupled to the rotor. The outlet port of the compressor is coupled to the intake port of the expansion chamber, the outlet port of the expansion chamber being coupled to the intake port of the output turbine; and power transmitting means connected between the crank shaft of the primary engine and the rotor shaft of the rotary engine whereby auxiliary power is provided to the primary engine.

  17. Dartmouth Wave Energy | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments Inc JumpIowa: EnergyDark River,Energy Information

  18. Converting Limbo Lands to Energy-Generating Stations: Renewable Energy Technologies on Underused, Formerly Contaminated Sites

    SciTech Connect (OSTI)

    Mosey, G.; Heimiller, D.; Dahle, D.; Vimmerstedt, L.; Brady-Sabeff, L.

    2007-10-01

    This report addresses the potential for using 'Limbo Lands' (underused, formerly contaminated sites, landfills, brownfields, abandoned mine lands, etc. ) as sites for renewable energy generating stations.

  19. Microminiature thermionic converters

    DOE Patents [OSTI]

    King, Donald B. (Albuquerque, NM); Sadwick, Laurence P. (Salt Lake City, UT); Wernsman, Bernard R. (Clairton, PA)

    2001-09-25

    Microminiature thermionic converts (MTCs) having high energy-conversion efficiencies and variable operating temperatures. Methods of manufacturing those converters using semiconductor integrated circuit fabrication and micromachine manufacturing techniques are also disclosed. The MTCs of the invention incorporate cathode to anode spacing of about 1 micron or less and use cathode and anode materials having work functions ranging from about 1 eV to about 3 eV. Existing prior art thermionic converter technology has energy conversion efficiencies ranging from 5-15%. The MTCs of the present invention have maximum efficiencies of just under 30%, and thousands of the devices can be fabricated at modest costs.

  20. Power conditioning system for energy sources

    DOE Patents [OSTI]

    Mazumder, Sudip K. (Chicago, IL); Burra, Rajni K. (Chicago, IL); Acharya, Kaustuva (Chicago, IL)

    2008-05-13

    Apparatus for conditioning power generated by an energy source includes an inverter for converting a DC input voltage from the energy source to a square wave AC output voltage, and a converter for converting the AC output voltage from the inverter to a sine wave AC output voltage.

  1. Energy harvesting in silicon wavelength converters Kevin K. Tsia, Sasan Fathpour, and Bahram Jalali

    E-Print Network [OSTI]

    Jalali. Bahram

    ://www.ee.ucla.edu/~oecs/ Abstract: Nonlinear loss is the central problem in silicon devices that operate using nonlinear optical report the first demonstration of nonlinear photovoltaic effect in silicon wavelength converters

  2. Wave Energy Technologies Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,VillageWarrensourceCentre Jump to: navigation, search

  3. The Contribution of Environmental Siting and Permitting Requirements to the Cost of Energy for Wave Energy Devices

    SciTech Connect (OSTI)

    Copping, Andrea E.; Geerlofs, Simon H.; Hanna, Luke A.

    2014-06-30

    Responsible deployment of marine and hydrokinetic (MHK) devices in estuaries, coastal areas, and major rivers requires that biological resources and ecosystems be protected through siting and permitting (consenting) processes. Scoping appropriate deployment locations, collecting pre-installation (baseline) and post-installation data all add to the cost of developing MHK projects, and hence to the cost of energy. Under the direction of the U.S. Department of Energy, Pacific Northwest National Laboratory scientists have developed logic models that describe studies and processes for environmental siting and permitting. Each study and environmental permitting process has been assigned a cost derived from existing and proposed tidal, wave, and riverine MHK projects. Costs have been developed at the pilot scale and for commercial arrays for a surge wave energy converter

  4. Motor Wave Group | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland: EnergyInformation MontanaOhio:Hill,Morrisville, NewMoshanirMotorWave Group

  5. Triton Sea Wave Technologies | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThin Film SolarTown(LECBP) | Open Energy InformationSea Wave

  6. Long-Wave Infrared | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History ViewInformationWindsCompressedListguided wavesLone StarEnergyInfrared

  7. Alden Wave Basin | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: Energy ResourcesAirAlamoCalifornia:Wave Basin Jump to:

  8. Euro Wave Energy | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, AlabamaETEC GmbH JumpEllenville,Power CorpEnergyEunice, Louisiana:Power Pvt Ltd

  9. Dartmouth Wave Energy Searaser | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to: navigation, searchDaimler Evonik JVDaofu Co LtdEnergy

  10. Next Wave Energy Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg, Oregon: Energy Resources Jump to:Inc Jump to: navigation,Inc

  11. Wave Energy AS | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThinWarsaw, Poland:Energy InformationWausau High School Jump

  12. Wave Star Energy | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThinWarsaw, Poland:Energy InformationWausau High SchoolInc

  13. GLOBAL INFINITE ENERGY SOLUTIONS FOR THE CUBIC WAVE EQUATION

    E-Print Network [OSTI]

    Thomann, Laurent

    energy) random initial data. To the best of our knowledge such a regularity is out of reachGLOBAL INFINITE ENERGY SOLUTIONS FOR THE CUBIC WAVE EQUATION by Nicolas Burq, Laurent Thomann & Nikolay Tzvetkov Abstract. -- We prove the existence of infinite energy global solutions of the cubic wave

  14. Wave Energy Test Site (WETS) Marine Corps Base Hawaii (MCBH)

    E-Print Network [OSTI]

    Wave Energy Test Site (WETS) Marine Corps Base Hawaii (MCBH) Alexandra DeVisser, NAVFAC-EXWC Brian June 10, 2013 #12;Wave Energy Test Site (WETS) Objective: Provide location for year-long in Cable, Sound & Sea Technology (SST) Luis A. Vega, HNEI-University of Hawaii Energy Ocean International

  15. Thermionic converter

    DOE Patents [OSTI]

    Fitzpatrick, G.O.

    1987-05-19

    A thermionic converter is set forth which includes an envelope having an electron collector structure attached adjacent to a wall. An electron emitter structure is positioned adjacent the collector structure and spaced apart from opposite wall. The emitter and collector structures are in a common chamber. The emitter structure is heated substantially only by thermal radiation. Very small interelectrode gaps can be maintained utilizing the thermionic converter whereby increased efficiency results. 10 figs.

  16. Acceleration of low energy charged particles by gravitational waves

    E-Print Network [OSTI]

    G. Voyatzis; L. Vlahos; S. Ichtiaroglou; D. Papadopoulos

    2005-12-07

    The acceleration of charged particles in the presence of a magnetic field and gravitational waves is under consideration. It is shown that the weak gravitational waves can cause the acceleration of low energy particles under appropriate conditions. Such conditions may be satisfied close to the source of the gravitational waves if the magnetized plasma is in a turbulent state.

  17. Energy Department Invests $16 Million to Harness Wave and Tidal...

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

    wave conditions and adjust system settings to maximize power output. Responsible and Sustainable Energy Development As part of the Administration's commitment to developing...

  18. Energy Transfer via Solar Wind Driven Ultra Low Frequency Waves in the Earth's Magnetosphere

    E-Print Network [OSTI]

    Hartinger, Michael David

    2012-01-01

    Modeling energy transfer via solar wind driven ULFthrough which solar wind energy can drive wave activity. Inthrough which solar wind energy can drive wave activity. In

  19. Wave Energy Test Site Hawai`i Natural Energy Institute | School of Ocean & Earth Science & Technology

    E-Print Network [OSTI]

    Energy Test Site (WETS). Design by Sound and Sea Technology for US Navy 30m 80m 60m Bunker #12;WaveWave Energy Test Site Hawai`i Natural Energy Institute | School of Ocean & Earth Science`i Wave Energy Test Site (WETS), the United States' first grid- connected test site of this kind

  20. Wave turbulence revisited: Where does the energy flow?

    E-Print Network [OSTI]

    L. V. Abdurakhimov; I. A. Remizov; A. A. Levchenko; G. V. Kolmakov; Y. V. Lvov

    2014-04-03

    Turbulence in a system of nonlinearly interacting waves is referred to as wave turbulence. It has been known since seminal work by Kolmogorov, that turbulent dynamics is controlled by a directional energy flux through the wavelength scales. We demonstrate that an energy cascade in wave turbulence can be bi-directional, that is, can simultaneously flow towards large and small wavelength scales from the pumping scales at which it is injected. This observation is in sharp contrast to existing experiments and wave turbulence theory where the energy flux only flows in one direction. We demonstrate that the bi-directional energy cascade changes the energy budget in the system and leads to formation of large-scale, large-amplitude waves similar to oceanic rogue waves. To study surface wave turbulence, we took advantage of capillary waves on a free, weakly charged surface of superfluid helium He-II at temperature 1.7K. Although He-II demonstrates non-classical thermomechanical effects and quantized vorticity, waves on its surface are identical to those on a classical Newtonian fluid with extremely low viscosity. The possibility of directly driving a charged surface by an oscillating electric field and the low viscosity of He-II have allowed us to isolate the surface dynamics and study nonlinear surface waves in a range of frequencies much wider than in experiments with classical fluids.

  1. Impulsive phase flare energy transport by large-scale Alfven waves and the electron acceleration problem

    E-Print Network [OSTI]

    L. Fletcher; H. S. Hudson

    2007-12-20

    The impulsive phase of a solar flare marks the epoch of rapid conversion of energy stored in the pre-flare coronal magnetic field. Hard X-ray observations imply that a substantial fraction of flare energy released during the impulsive phase is converted to the kinetic energy of mildly relativistic electrons (10-100 keV). The liberation of the magnetic free energy can occur as the coronal magnetic field reconfigures and relaxes following reconnection. We investigate a scenario in which products of the reconfiguration - large-scale Alfven wave pulses - transport the energy and magnetic-field changes rapidly through the corona to the lower atmosphere. This offers two possibilities for electron acceleration. Firstly, in a coronal plasma with beta waves propagate as inertial Alfven waves. In the presence of strong spatial gradients, these generate field-aligned electric fields that can accelerate electrons to energies on the order of 10 keV and above, including by repeated interactions between electrons and wavefronts. Secondly, when they reflect and mode-convert in the chromosphere, a cascade to high wavenumbers may develop. This will also accelerate electrons by turbulence, in a medium with a locally high electron number density. This concept, which bridges MHD-based and particle-based views of a flare, provides an interpretation of the recently-observed rapid variations of the line-of-sight component of the photospheric magnetic field across the flare impulsive phase, and offers solutions to some perplexing flare problems, such as the flare "number problem" of finding and resupplying sufficient electrons to explain the impulsive-phase hard X-ray emission.

  2. Wave EnergyFocusing in aThree-dimensional Numerical WaveTank C. Fochesato*, F. Dias**, S. Grilli***

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    Wave EnergyFocusing in aThree-dimensional Numerical WaveTank C. Fochesato*, F. Dias**, S. Grilli Department (University of Rhode Island), Narragansett, RI, U.S.A. ABSTRACT Directional wave energy focusing in space is one of the mechanisms that may contribute to the generation of a rogue wave in the ocean

  3. Fluctuations of energy flux in wave turbulence Eric Falcon,1

    E-Print Network [OSTI]

    Falcon, Eric

    Fluctuations of energy flux in wave turbulence ´Eric Falcon,1 S´ebastien Auma^itre,2 Claudio Falc gravity and capillary wave turbulence in a statistically stationary regime displays fluctuations much interactions transfer kinetic energy toward small scales where viscous dissipation takes place

  4. Monolithic, multi-bandgap, tandem, ultra-thin, strain-counterbalanced, photovoltaic energy converters with optimal subcell bandgaps

    DOE Patents [OSTI]

    Wanlass, Mark W. (Golden, CO); Mascarenhas, Angelo (Lakewood, CO)

    2012-05-08

    Modeling a monolithic, multi-bandgap, tandem, solar photovoltaic converter or thermophotovoltaic converter by constraining the bandgap value for the bottom subcell to no less than a particular value produces an optimum combination of subcell bandgaps that provide theoretical energy conversion efficiencies nearly as good as unconstrained maximum theoretical conversion efficiency models, but which are more conducive to actual fabrication to achieve such conversion efficiencies than unconstrained model optimum bandgap combinations. Achieving such constrained or unconstrained optimum bandgap combinations includes growth of a graded layer transition from larger lattice constant on the parent substrate to a smaller lattice constant to accommodate higher bandgap upper subcells and at least one graded layer that transitions back to a larger lattice constant to accommodate lower bandgap lower subcells and to counter-strain the epistructure to mitigate epistructure bowing.

  5. Wave-Packet Revivals for Quantum Systems with Nondegenerate Energies

    E-Print Network [OSTI]

    Robert Bluhm; Alan Kostelecky; Bogdan Tudose

    1996-09-26

    The revival structure of wave packets is examined for quantum systems having energies that depend on two nondegenerate quantum numbers. For such systems, the evolution of the wave packet is controlled by two classical periods and three revival times. These wave packets exhibit quantum beats in the initial motion as well as new types of long-term revivals. The issue of whether fractional revivals can form is addressed. We present an analytical proof showing that at certain times equal to rational fractions of the revival times the wave packet can reform as a sum of subsidiary waves and that both conventional and new types of fractional revivals can occur.

  6. Self Adaptive Air Turbine for Wave Energy Conversion Using Shutter Valve and OWC Heoght Control System

    SciTech Connect (OSTI)

    Di Bella, Francis A

    2014-09-29

    An oscillating water column (OWC) is one of the most technically viable options for converting wave energy into useful electric power. The OWC system uses the wave energy to “push or pull” air through a high-speed turbine, as illustrated in Figure 1. The turbine is typically a bi-directional turbine, such as a Wells turbine or an advanced Dennis-Auld turbine, as developed by Oceanlinx Ltd. (Oceanlinx), a major developer of OWC systems and a major collaborator with Concepts NREC (CN) in Phase II of this STTR effort. Prior to awarding the STTR to CN, work was underway by CN and Oceanlinx to produce a mechanical linkage mechanism that can be cost-effectively manufactured, and can articulate turbine blades to improve wave energy capture. The articulation is controlled by monitoring the chamber pressure. Funding has been made available from the U.S. Department of Energy (DOE) to CN (DOE DE-FG-08GO18171) to co-share the development of a blade articulation mechanism for the purpose of increasing energy recovery. However, articulating the blades is only one of the many effective design improvements that can be made to the composite subsystems that constitute the turbine generator system.

  7. The Role of Wave Energy Accumulation in Tropical Cyclogenesis over the Tropical North Atlantic

    E-Print Network [OSTI]

    Webster, Peter J.

    The Role of Wave Energy Accumulation in Tropical Cyclogenesis over the Tropical North Atlantic "wave energy"). Relative vorticity increases locally leading to an increase in the likelihood scales of interaction. The importance of wave energy accumulation for tropical cyclogenesis

  8. Wave Energy Prize Narrowed from 92 Teams to Top 20 | Department...

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

    Wave Energy Prize Narrowed from 92 Teams to Top 20 Wave Energy Prize Narrowed from 92 Teams to Top 20 August 14, 2015 - 2:16pm Addthis Wave Energy Prize Narrowed from 92 Teams to...

  9. Energy Dispersed Large Data Wave Maps in 2 + 1 Dimensions

    E-Print Network [OSTI]

    Sterbenz, Jacob; Tataru, Daniel

    2010-01-01

    of Finite S Norm Wave-Maps and Energy Dispersion 10.1renormalization of large energy wave maps. In: Journées “of Finite S Norm Wave-Maps and Energy Dispersion In this

  10. Energy Transfer via Solar Wind Driven Ultra Low Frequency Waves in the Earth's Magnetosphere

    E-Print Network [OSTI]

    Hartinger, Michael David

    2012-01-01

    wind to various sinks of wave energy in the magnetosphere.magnetosphere (where wave energy can exit the magnetospheresource and a sink for ULF wave energy. One of the most well-

  11. Study of Power Converter Topologies with Energy Recovery and grid power flow control. Part A: 2-quadrant converter with energy storage.

    E-Print Network [OSTI]

    Maestri, S; Uicich, G; Benedetti, M; Le Godec, G; Papastergiou, K

    2015-01-01

    In the framework of a Transfer line (TT2) Consolidation Programme, a number of studies on Energy cycling have been commissioned. Part of this work involves the study of different power electronic system topologies for magnet energy recovery [1{5]. In this report, the use of a two-quadrant (2Q) regulator connected to the DC link of a 4-quadrant magnet supply is analysed. The key objective of the study is to find control strategies that result in the control of the peak power required from the power network as well as to recover the magnet energy into capacitor banks with controlled voltage fluctuation. The study comprises the modelling of the system by means of the method of state averaging and the development of regulation strategies to energy management. The proposed control strategies can be divided in two groups: in the first group, the magnet current is used to dene the reference for the control system, while in the second group this current is considered as a perturbation and some strategies are devised ...

  12. Energy Department Announces $7.25 Million for Projects to Advance...

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

    to advance water power as a viable resource for America's clean energy portfolio. Marine and hydrokinetic (MHK) technologies convert the energy of waves, tides, rivers, and...

  13. Sandia Energy - EC Publications

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

    Wave Energy Converter (WEC) Array Effects on Wave, Current, and Sediment Circulation: Monterey Bay, CATara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download Filename...

  14. Deployment Effects of Marine Renewable Energy Technologies: Wave Energy Scenarios

    SciTech Connect (OSTI)

    Mirko Previsic

    2010-06-17

    Given proper care in siting, design, deployment, operation and maintenance, wave energy conversion could become one of the more environmentally benign sources of electricity generation. In order to accelerate the adoption of these emerging hydrokinetic and marine energy technologies, navigational and environmental concerns must be identified and addressed. All developing hydrokinetic projects involve a wide variety of stakeholders. One of the key issues that site developers face as they engage with this range of stakeholders is that, due to a lack of technical certainty, many of the possible conflicts (e.g., shipping and fishing) and environmental issues are not well-understood,. In September 2008, re vision consulting, LLC was selected by the Department of Energy (DoE) to apply a scenario-based assessment to the emerging hydrokinetic technology sector in order to evaluate the potential impact of these technologies on the marine environment and navigation constraints. The project’s scope of work includes the establishment of baseline scenarios for wave and tidal power conversion at potential future deployment sites. The scenarios capture variations in technical approaches and deployment scales to properly identify and characterize environmental effects and navigational effects. The goal of the project is to provide all stakeholders with an improved understanding of the potential range of technical attributes and potential effects of these emerging technologies and focus all stakeholders on the critical issues that need to be addressed. By identifying and addressing navigational and environmental concerns in the early stages of the industry’s development, serious mistakes that could potentially derail industry-wide development can be avoided. This groundwork will also help in streamlining siting and associated permitting processes, which are considered key hurdles for the industry’s development in the U.S. today. Re vision is coordinating its efforts with two other project teams funded by DoE which are focused on regulatory issues (Pacific Energy Ventures) and navigational issues (PCCI). The results of this study are structured into three reports: (1) Wave power scenario description (2) Tidal power scenario description (3) Framework for Identifying Key Environmental Concerns This is the first report in the sequence and describes the results of conceptual feasibility studies of wave power plants deployed in Humboldt County, California and Oahu, Hawaii. These two sites contain many of the same competing stakeholder interactions identified at other wave power sites in the U.S. and serve as representative case studies. Wave power remains at an early stage of development. As such, a wide range of different technologies are being pursued by different manufacturers. In order to properly characterize potential effects, it is useful to characterize the range of technologies that could be deployed at the site of interest. An industry survey informed the process of selecting representative wave power devices. The selection criteria requires that devices are at an advanced stage of development to reduce technical uncertainties, and that enough data are available from the manufacturers to inform the conceptual design process of this study. Further, an attempt is made to cover the range of different technologies under development to capture variations in potential environmental effects. Table 1 summarizes the selected wave power technologies. A number of other developers are also at an advanced stage of development, but are not directly mentioned here. Many environmental effects will largely scale with the size of the wave power plant. In many cases, the effects of a single device may not be measurable, while larger scale device arrays may have cumulative impacts that differ significantly from smaller scale deployments. In order to characterize these effects, scenarios are established at three deployment scales which nominally represent (1) a small pilot deployment, (2) a small commercial deployment, and (3) a large commercial sc

  15. Energy dissipation in wave propagation in general relativistic plasma

    E-Print Network [OSTI]

    Ajanta Das; S. Chatterjee

    2009-11-03

    Based on a recent communication by the present authors the question of energy dissipation in magneto hydrodynamical waves in an inflating background in general relativity is examined. It is found that the expanding background introduces a sort of dragging force on the propagating wave such that unlike the Newtonnian case energy gets dissipated as it progresses. This loss in energy having no special relativistic analogue is, however, not mechanical in nature as in elastic wave. It is also found that the energy loss is model dependent and also depends on the number of dimensions.

  16. Synthetic Metagenomics: Converting digital information back to Biology (2013 DOE JGI Genomics of Energy and Environment 8th Annual User Meeting)

    SciTech Connect (OSTI)

    Deutsch, Sam [DOE Joint Genome Institute

    2013-03-01

    Sam Deutsch of the DOE JGI on "Synthetic Metagenomics: Converting digital information back to Biology" at the 8th Annual Genomics of Energy & Environment Meeting in Walnut Creek, Calif.

  17. On the wave energy potential of Western Black Sea shelf

    E-Print Network [OSTI]

    Galabov, Vasko

    2013-01-01

    In the present study we evaluate the approaches to estimate the wave energy potential of the western Black Sea shelf with numerical models. For the purpose of our evaluation and due to the lack of long time series of measurements in the selected area of the Black Sea, we compare the modeled mean wave power flux output from the SWAN wave model with the only available long term measurements from the buoy of Gelendzhik for the period 1997-2003 (with gaps). The forcing meteorological data for the numerical wave models for the selected years is extracted from the ERA Interim reanalysis of ECMWF (European Centre for Medium range Forecasts). For the year 2003 we also compare the estimated wave power with the modeled by SWAN, using ALADIN regional atmospheric model winds. We try to identify the shortcomings and limitations of the numerical modeling approach to the evaluation of the wave energy potential in Black Sea.

  18. Design and Control of a Floating Wave-Energy Converter Utilizing a Permanent Magnet Linear Generator

    E-Print Network [OSTI]

    Tom, Nathan Michael

    2013-01-01

    Force . . . . . . . . . . . . . . . . . . . .GeneratorGenerator Dry Bench Test . . . . . . . . .4.5.7 Generator Power

  19. Bearing options, including design and testing, for direct drive linear generators in wave energy converters 

    E-Print Network [OSTI]

    Caraher, Sarah

    2011-11-22

    The key focus of this research was to investigate the bearing options most suited to operation in a novel direct drive linear generator. This was done through bearing comparisons, modelling and testing. It is fundamental ...

  20. Design and Control of a Floating Wave-Energy Converter Utilizing a Permanent Magnet Linear Generator

    E-Print Network [OSTI]

    Tom, Nathan Michael

    2013-01-01

    Conference on Electric Machines and Drives (IEMDC-03), JuneConference on Electric Machines & Drives (IEMDC-07), 2,Vernier hybrid machines,” IEEE Proceedings Electric Power

  1. Characterization of U.S. Wave Energy Converter (WEC) Test Sites | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank,CammackFLIR Jump to:RAPIDCavalloCerionChannahon,7 Jump to:4:

  2. Sensitivity of a Wave Energy Converter Dynamics Model to Nonlinear Hydrostatic Models

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservation ofAlbuquerque|Sensitive Species Sensitive Species By avoiding or minimizing

  3. Characterization of U.S. Wave Energy Converter Test Sites: A Catalogue of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirley

  4. ENERGY CONTENT AND PROPAGATION IN TRANSVERSE SOLAR ATMOSPHERIC WAVES

    SciTech Connect (OSTI)

    Goossens, M.; Van Doorsselaere, T. [Centre for mathematical Plasma Astrophysics, Mathematics Department, Celestijnenlaan 200B bus 2400, B-3001 Heverlee (Belgium); Soler, R. [Solar Physics Group, Departament de Fisica, Universitat de les Illes Balears, E-07122 Palma de Mallorca (Spain); Verth, G., E-mail: tom.vandoorsselaere@wis.kuleuven.be [Solar Physics and Space Plasma Research Centre (SP2RC), School of Mathematics and Statistics, University of Sheffield, Hounsfield Road, Hicks Building, Sheffield S3 7RH (United Kingdom)

    2013-05-10

    Recently, a significant amount of transverse wave energy has been estimated propagating along solar atmospheric magnetic fields. However, these estimates have been made with the classic bulk Alfven wave model which assumes a homogeneous plasma. In this paper, the kinetic, magnetic, and total energy densities and the flux of energy are computed for transverse MHD waves in one-dimensional cylindrical flux tube models with a piecewise constant or continuous radial density profile. There are fundamental deviations from the properties for classic bulk Alfven waves. (1) There is no local equipartition between kinetic and magnetic energy. (2) The flux of energy and the velocity of energy transfer have, in addition to a component parallel to the magnetic field, components in the planes normal to the magnetic field. (3) The energy densities and the flux of energy vary spatially, contrary to the case of classic bulk Alfven waves. This last property has the important consequence that the energy flux computed with the well known expression for bulk Alfven waves could overestimate the real flux by a factor in the range 10-50, depending on the flux tube equilibrium properties.

  5. GECCO Ocean Energy System Luis Maristany, Nicole Waters, Billy W. Wells Jr., Mario Suarez, Richard Gestewitz, Alexej Wiest,

    E-Print Network [OSTI]

    Wood, Stephen L.

    types of materials, supplies, as well as energy; however the exploration of wave energy as a resource Operation) is a wave energy converter that extracts kinetic energy from ocean waves using a rugged, innovative mechanical multi-system. Index Terms--Ocean energy, wave energy, hydrokinetic energy, alternative

  6. Energy Contents of Gravitational Waves in Teleparallel Gravity

    E-Print Network [OSTI]

    M. Sharif; Sumaira Taj

    2009-10-02

    The conserved quantities, that are, gravitational energy-momentum and its relevant quantities are investigated for cylindrical and spherical gravitational waves in the framework of teleparallel equivalent of General Relativity using the Hamiltonian approach. For both cylindrical and spherical gravitational waves, we obtain definite energy and constant momentum. The constant momentum shows consistency with the results available in General Relativity and teleparallel gravity. The angular momentum for cylindrical and spherical gravitational waves also turn out to be constant. Further, we evaluate their gravitational energy-momentum fluxes and gravitational pressure.

  7. Energy of Alfven waves generated during magnetic reconnection

    E-Print Network [OSTI]

    Wang, L C; Ma, Z W; Zhang, X; Lee, L C

    2015-01-01

    A new method for the determination of the Alfven wave energy generated during magnetic reconnection is introduced and used to analyze the results from two-dimensional MHD simulations. It is found that the regions with strong Alfven wave perturbations almost coincide with that where both magnetic-field lines and flow-stream lines are bent, suggesting that this method is reliable for identifying Alfven waves. The magnetic energy during magnetic reconnection is mainly transformed into the thermal energy. The conversion rate to Alfven wave energy from the magnetic energy is strongly correlated to the magnetic reconnection rate. The maximum conversion rate at the time with the peak reconnection rate is found to be only about 4% for the cases with the plasma beta=0.01,0.1, and 1.0.

  8. Author's personal copy Wave energy resources along the Hawaiian Island chain

    E-Print Network [OSTI]

    Author's personal copy Wave energy resources along the Hawaiian Island chain Justin E. Stopa model Wave atlas Wave energy Wave power a b s t r a c t Hawaii's access to the ocean and remoteness from as nearshore wave energy resources in Hawaii. A global WAVEWATCH III (WW3) model forced by surface winds from

  9. Energy and Momentum of a Class of Rotating Gravitational Waves

    E-Print Network [OSTI]

    M. Sharif

    2001-02-09

    We calculate energy and momentum for a class of cylindrical rotating gravitational waves using Einstein and Papapetrou's prescriptions. It is shown that the results obtained are reduced to the special case of the cylindrical gravitational waves already available in the literature.

  10. Energy Content of Colliding Plane Waves using Approximate Noether Symmetries

    E-Print Network [OSTI]

    M. Sharif; Saira Waheed

    2011-09-19

    This paper is devoted to study the energy content of colliding plane waves using approximate Noether symmetries. For this purpose, we use approximate Lie symmetry method of Lagrangian for differential equations. We formulate the first-order perturbed Lagrangian for colliding plane electromagnetic and gravitational waves. It is shown that in both cases, there does not exist

  11. Wave Function Properties in a High Energy Process

    E-Print Network [OSTI]

    Arjun Berera

    1994-11-14

    A model example is given of how properties of the hadronic light-cone wave function are revealed in a particular high energy process. The meson wave function is derived in scalar quark QCD. We apply it to compute the form of the cross section for lossless diffractive jet-production, an upcoming possiblity at HERA.

  12. Self-powered microthermionic converter

    DOE Patents [OSTI]

    Marshall, Albert C.; King, Donald B.; Zavadil, Kevin R.; Kravitz, Stanley H.; Tigges, Chris P.; Vawter, Gregory A.

    2004-08-10

    A self-powered microthermionic converter having an internal thermal power source integrated into the microthermionic converter. These converters can have high energy-conversion efficiencies over a range of operating temperatures. Microengineering techniques are used to manufacture the converter. The utilization of an internal thermal power source increases potential for mobility and incorporation into small devices. High energy efficiency is obtained by utilization of micron-scale interelectrode gap spacing. Alpha-particle emitting radioisotopes can be used for the internal thermal power source, such as curium and polonium isotopes.

  13. Danish Wave Energy Development Ltd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to: navigation, searchDaimler Evonik JV JumpDanbioWave Energy

  14. California Wave Energy Partners 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank, Maine:Kansas: EnergyCalendarCalhounWebpageProjectPrograms Jump to:WellWave

  15. Multi-port DC-DC Power Converter for Renewable Energy Application 

    E-Print Network [OSTI]

    Chou, Hung-Ming

    2010-01-16

    In recent years, there has been lots of emphasis put on the development of renewable energy. While considerable improvement on renewable energy has been made, there are some inherent limitations for these renewable energies. For example, for solar...

  16. Energy Transfer via Solar Wind Driven Ultra Low Frequency Waves in the Earth's Magnetosphere

    E-Print Network [OSTI]

    Hartinger, Michael David

    2012-01-01

    spectral density comparison Wave polarization and energythe plasmasphere on ULF wave energy transfer. We conclude inan important e?ect on ULF wave energy transfer in the Pc5

  17. Internal wave energy radiated from a turbulent mixed layer

    SciTech Connect (OSTI)

    Munroe, James R.; Sutherland, Bruce R.

    2014-09-15

    We examine mixed-layer deepening and the generation of internal waves in stratified fluid resulting from turbulence that develops in response to an applied surface stress. In laboratory experiments the stress is applied over the breadth of a finite-length tank by a moving roughened conveyor belt. The turbulence in the shear layer is characterized using particle image velocimetry to measure the kinetic energy density. The internal waves are measured using synthetic schlieren to determine their amplitudes, frequencies, and energy density. We also perform fully nonlinear numerical simulations restricted to two dimensions but in a horizontally periodic domain. These clearly demonstrate that internal waves are generated by transient eddies at the integral length scale of turbulence and which translate with the background shear along the base of the mixed layer. In both experiments and simulations we find that the energy density of the generated waves is 1%–3% of the turbulent kinetic energy density of the turbulent layer.

  18. SoC Energy Savings = Reduce+Reuse+Recycle: A Case Study Using a 660MHz DC-DC Converter with Integrated Output Filter

    E-Print Network [OSTI]

    Lemieux, Guy

    that requires careful planning of the interface between the provider and receptor of the energy. In this paper between energy provider and receptor. Since fully integrated on-chip regulators are usually inefficientSoC Energy Savings = Reduce+Reuse+Recycle: A Case Study Using a 660MHz DC-DC Converter

  19. Wave energy attenuation and shoreline alteration characteristics of submerged breakwaters 

    E-Print Network [OSTI]

    Krafft, Katherine Margaret

    1993-01-01

    WAVE ENERGY ATTENUATION AND SHORELINE ALTERATION CHARACTERISTICS OF SUBMERGED BREAKWATERS A Thesis by KATHERINE MARGARET KRAFFT Submitted to the Office of Graduate Studies of Texas AIM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1993 Major Subject: Ocean Engineering WAVE ENERGY ATTENUATION AND SHORELINE ALTERATION CHARACTERISTICS OF SUBMERGED BREAKWATERS A Thesis by KATHERINE MARGARET KRAFFT Approved as to style and content by: John...

  20. Energy: Converting from acoustic to biological resource units Kelly J. Benoit-Birda)

    E-Print Network [OSTI]

    Benoit-Bird, Kelly J.

    for secondary production, carbon, ATP, and energy content calories . In every case, biomass is a measure of organic resources or available energy. Acousti- cians and fisheries biologists attempt to assess biomass to assess biomass through a direct conversion of acoustic energy to units of organic energy without

  1. Gauge Invariant Effective Stress-Energy Tensors for Gravitational Waves

    E-Print Network [OSTI]

    Paul R. Anderson

    1996-09-09

    It is shown that if a generalized definition of gauge invariance is used, gauge invariant effective stress-energy tensors for gravitational waves and other gravitational perturbations can be defined in a much larger variety of circumstances than has previously been possible. In particular it is no longer necessary to average the stress-energy tensor over a region of spacetime which is larger in scale than the wavelengths of the waves and it is no longer necessary to restrict attention to high frequency gravitational waves.

  2. Energy storage and generation from thermopower waves

    E-Print Network [OSTI]

    Abrahamson, Joel T. (Joel Theodore)

    2012-01-01

    The nonlinear coupling between an exothermic chemical reaction and a nanowire or nanotube with large axial heat conduction guides a self-propagating thermal wave along the nano-conduit. The thermal conduit accelerates the ...

  3. Mapping and Assessment of the United States Ocean Wave Energy Resource

    SciTech Connect (OSTI)

    Hagerman, G.; Scott, G.

    2011-12-01

    This project estimates the naturally available and technically recoverable U.S. wave energy resources.

  4. UTILITY OF EXTRACTING CY PARTICLE ENERGY BY WAVES N.J. FISCH, M.C. HERRMANN

    E-Print Network [OSTI]

    UTILITY OF EXTRACTING CY PARTICLE ENERGY BY WAVES N.J. FISCH, M.C. HERRMANN Princeton Plasma by injecting waves that diffuse the a particles both in space and in energy, rather than just in energy [13 particle power by waves, and that these waves might then damp resonantly on the fast energy tail

  5. Estimating Internal Wave Energy Fluxes in the Ocean JONATHAN D. NASH

    E-Print Network [OSTI]

    Balasubramanian, Ravi

    Estimating Internal Wave Energy Fluxes in the Ocean JONATHAN D. NASH College of Oceanic FE u p cgE is a fundamental quan- tity in internal wave energetics to identify energy sources, wave propagation, and energy sinks. Internal wave radiation transports energy from the boundaries

  6. Quantum Monte Carlo: Direct calculation of corrections to trial wave functions and their energies

    E-Print Network [OSTI]

    Anderson, James B.

    . The wave functions and energies for these systems are corrected to the fixed-node values desirable features of: good wave function in/better wave function out ... good energy in/better energy out wave function, and Eref is a reference energy. Making use of the difference 0 and defining another

  7. DOE Announces Webinars on Wind Energy and Property Values, the...

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

    development, and engages stakeholders from all segments of the community. View the past webinar. Addthis Related Articles DOE Announces Webinars on the Wave Energy Converter Prize...

  8. NREL: Energy Systems Integration - NREL's Power Systems Research...

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

    NREL's research in power systems. J. Weber - Progress on Structured Innovation in Wave Energy Converter Technology Development M. Lawson - Developing Numerical Modeling...

  9. Instrumentation for Monitoring around Marine Renewable Energy Converters: Workshop Final Report

    SciTech Connect (OSTI)

    Copping, Andrea E.; Polagye, Brian

    2014-01-31

    Report on workshop held in Seattle for DOE WWPTO on instrument needs for monitoring marine energy devices

  10. Modeling a thermionic energy converter using finite-difference time-domain particle-in-cell simulations

    SciTech Connect (OSTI)

    Lo, F. S.; Lee, T. H.; Lu, P. S.; Ragan-Kelley, B.; Plasma Theory and Simulation Group, University of California, Berkeley, California 94720 ; Minnich, A.; Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125 ; Lin, M. C.; Verboncoeur, J. P.; Department of Electrical and Computing Engineering, Michigan State University, East Lansing, Michigan 48824

    2014-02-15

    A thermionic energy converter (TEC) is a static device that converts heat directly into electricity by boiling electrons off a hot emitter surface across a small inter-electrode gap to a cooler collector surface. The main challenge in TECs is overcoming the space charge limit, which limits the current transmitted across a gap of a given voltage and width. We have verified the feasibility of studying and developing a TEC using a bounded finite-difference time-domain particle-in-cell plasma simulation code, OOPD1, developed by Plasma Theory and Simulation Group, formerly at UC Berkeley and now at Michigan State University. In this preliminary work, a TEC has been modeled kinetically using OOPD1, and the accuracy has been verified by comparing with an analytically solvable case, giving good agreement. With further improvement of the code, one will be able to quickly and cheaply analyze space charge effects, and seek designs that mitigate the space charge effect, allowing TECs to become more efficient and cost-effective.

  11. PHYSICAL REVIEW E 89, 023003 (2014) Energy flux measurement from the dissipated energy in capillary wave turbulence

    E-Print Network [OSTI]

    Falcon, Eric

    2014-01-01

    energy flux are in good agreement with wave turbulence theory. The Kolmogorov-Zakharov constant waves interact with each other, they can develop a regime of wave turbulence where the wave energyPHYSICAL REVIEW E 89, 023003 (2014) Energy flux measurement from the dissipated energy in capillary

  12. Fluid bed gasification – Plasma converter process generating energy from solid waste: Experimental assessment of sulphur species

    SciTech Connect (OSTI)

    Morrin, Shane, E-mail: shane.morrin@ucl.ac.uk [Department of Chemical Engineering, University College London, London WC1E 7JE (United Kingdom); Advanced Plasma Power, Swindon, Wiltshire SN3 4DE (United Kingdom); Lettieri, Paola, E-mail: p.lettieri@ucl.ac.uk [Department of Chemical Engineering, University College London, London WC1E 7JE (United Kingdom); Chapman, Chris, E-mail: chris.chapman@app-uk.com [Advanced Plasma Power, Swindon, Wiltshire SN3 4DE (United Kingdom); Taylor, Richard, E-mail: richard.taylor@app-uk.com [Advanced Plasma Power, Swindon, Wiltshire SN3 4DE (United Kingdom)

    2014-01-15

    Highlights: • We investigate gaseous sulphur species whilst gasifying sulphur-enriched wood pellets. • Experiments performed using a two stage fluid bed gasifier – plasma converter process. • Notable SO{sub 2} and relatively low COS levels were identified. • Oxygen-rich regions of the bed are believed to facilitate SO{sub 2}, with a delayed release. • Gas phase reducing regions above the bed would facilitate more prompt COS generation. - Abstract: Often perceived as a Cinderella material, there is growing appreciation for solid waste as a renewable content thermal process feed. Nonetheless, research on solid waste gasification and sulphur mechanisms in particular is lacking. This paper presents results from two related experiments on a novel two stage gasification process, at demonstration scale, using a sulphur-enriched wood pellet feed. Notable SO{sub 2} and relatively low COS levels (before gas cleaning) were interesting features of the trials, and not normally expected under reducing gasification conditions. Analysis suggests that localised oxygen rich regions within the fluid bed played a role in SO{sub 2}’s generation. The response of COS to sulphur in the feed was quite prompt, whereas SO{sub 2} was more delayed. It is proposed that the bed material sequestered sulphur from the feed, later aiding SO{sub 2} generation. The more reducing gas phase regions above the bed would have facilitated COS – hence its faster response. These results provide a useful insight, with further analysis on a suite of performed experiments underway, along with thermodynamic modelling.

  13. Power Converters for Cycling Machines

    E-Print Network [OSTI]

    Bouteille, J F

    2015-01-01

    Cycling accelerators require power converters that are capable of storing the energy that oscillates between lattice magnets and the converter during the acceleration process. This paper presents the basic requirements for such systems and reviews the various electrical circuits that have been used for a variety of differing applications. The designs currently used for fast-, medium- and slow-cycling accelerators are presented.

  14. Coordinated control and network integration of wave power farms 

    E-Print Network [OSTI]

    Nambiar, Anup Jayaprakash

    2012-11-29

    Significant progress has been made in the development of wave energy converters (WECs) during recent years, with prototypes and farms of WECs being installed in different parts of the world. With increasing sizes of ...

  15. Power Converter Topologies with Energy Recovery and Grid Power Limitation For Inductive Load Applications

    E-Print Network [OSTI]

    Rossini, Stefano; Papastergiou, Konstantinos; Le Godec, Gilles; Retegui, Rogelio Garcia; Maestri, Sebastian

    2015-01-01

    This work investigates a grid interface for power supplies used in particle accelerators for cycling loads such as large electromagnets. Two topologies are discussed integrating magnetic energy recovery. For each topology, the associated energy management strategies are examined with the objective to control the grid current profile. A model is established for each of the proposed solutions and the simulation results are presented. A critical review of the investigated energy management solutions is attempted.

  16. SEPTEMBER 2006 MOUM ET. AL. 1 Energy Transport by Nonlinear Internal Waves

    E-Print Network [OSTI]

    Pierce, Stephen

    SEPTEMBER 2006 MOUM ET. AL. 1 Energy Transport by Nonlinear Internal Waves J. N. MOUM1 , J. M of coastline. The energy transported by these waves includes a nonlinear advection term uE that is negligible in linear internal waves. Unlike linear internal waves, the pressure-velocity energy flux up includes

  17. APRIL 2006 MOUM ET. AL. 1 Energy Transport by Nonlinear Internal Waves

    E-Print Network [OSTI]

    Pierce, Stephen

    APRIL 2006 MOUM ET. AL. 1 Energy Transport by Nonlinear Internal Waves J. N. MOUM1 , J. M. KLYMAK2. The energy transported by these waves includes a nonlinear advection term uE that is negligible in linear internal waves. Unlike linear internal waves, the pressure-velocity energy flux up includes important

  18. Nonequilibrium Statistics of a Reduced Model for Energy Transfer in Waves

    E-Print Network [OSTI]

    Tabak, Esteban G.

    Nonequilibrium Statistics of a Reduced Model for Energy Transfer in Waves R. E. LEE DEVILLE Courant, with the subsequent dynamics transferring the energy to longer scales. The main dissipation mechanism is wave breaking, which usually acts on much longer (gravity) waves that intermittently remove energy from the wave system

  19. ON THE SELF-AVERAGING OF WAVE ENERGY IN RANDOM GUILLAUME BAL

    E-Print Network [OSTI]

    Bal, Guillaume

    ON THE SELF-AVERAGING OF WAVE ENERGY IN RANDOM MEDIA GUILLAUME BAL Abstract. We consider the stabilization (self-averaging) and destabilization of the energy of waves propagating in random media transport equations for arbitrary statistical moments of the wave field is used to show that wave energy

  20. Wave energy potential in the Eastern Mediterranean Levantine Basin. An integrated 10-year study

    E-Print Network [OSTI]

    Georgiou, Georgios

    Data bank Wave energy potential in the Eastern Mediterranean Levantine Basin. An integrated 10-year Article history: Received 30 July 2013 Accepted 25 March 2014 Available online Keywords: Wave energy Numerical atmospheric Wave modeling a b s t r a c t The main characteristics of wave energy potential over

  1. Zero Energy of Plane-Waves for ELKOs

    E-Print Network [OSTI]

    Luca Fabbri

    2011-02-23

    We consider the ELKO field in interaction through contorsion with its own spin density, and we investigate the form of the consequent autointeractions; to do so we take into account the high-density limit and find plane wave solutions: such plane waves give rise to contorsional autointeractions for which the Ricci metric curvature vanishes and therefore the energy density is equal to zero identically. Consequences are discussed.

  2. Double opposite-end tubesheet design for a thermovoltaic energy converter

    DOE Patents [OSTI]

    Ashcroft, John M. (Scotia, NY); Campbell, Brian C. (Scotia, NY); Depoy, David M. (Clifton Park, NY)

    2000-01-01

    A method and apparatus for the direct conversion of energy by thermovoltaic energy conversion having first and second tubesheets, at least one photon emitter plate secured to and extending from the first tubesheet, at least one cold plate secured to and extending from the second tubesheet, a plurality of thermovoltaic cells disposed along oppositely disposed exterior surfaces of the cold plate, and means cooperating with the tubesheet for maintaining a vacuum between the photon emitter plate and the cold plate.

  3. WindWaveFloat Final Report

    SciTech Connect (OSTI)

    Alla Weinstein, Dominique Roddier, Kevin Banister

    2012-03-30

    Principle Power Inc. and National Renewable Energy Lab (NREL) have completed a contract to assess the technical and economic feasibility of integrating wave energy converters into the WindFloat, resulting in a new concept called the WindWaveFloat (WWF). The concentration of several devices on one platform could offer a potential for both economic and operational advantages. Wind and wave energy converters can share the electrical cable and power transfer equipment to transport the electricity to shore. Access to multiple generation devices could be simplified, resulting in cost saving at the operational level. Overall capital costs may also be reduced, provided that the design of the foundation can be adapted to multiple devices with minimum modifications. Finally, the WindWaveFloat confers the ability to increase energy production from individual floating support structures, potentially leading to a reduction in levelized energy costs, an increase in the overall capacity factor, and greater stability of the electrical power delivered to the grid. The research conducted under this grant investigated the integration of several wave energy device types into the WindFloat platform. Several of the resulting system designs demonstrated technical feasibility, but the size and design constraints of the wave energy converters (technical and economic) make the WindWaveFloat concept economically unfeasible at this time. Not enough additional generation could be produced to make the additional expense associated with wave energy conversion integration into the WindFloat worthwhile.

  4. Title of Document: LONGITUDINAL SPACE-CHARGE WAVES INDUCED BY ENERGY MODULATIONS

    E-Print Network [OSTI]

    Anlage, Steven

    ABSTRACT Title of Document: LONGITUDINAL SPACE-CHARGE WAVES INDUCED BY ENERGY MODULATIONS Brian L. Modulations in energy or density can induce space-charge waves at low energies which could be problematic at higher energies. This thesis is a study of longitudinal space-charge waves induced by energy modulations

  5. Experimental Testing and Model Validation for Ocean Wave Energy Harvesting Buoys

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    Experimental Testing and Model Validation for Ocean Wave Energy Harvesting Buoys Douglas A. Gemme1 are presented for numerical simulations and field experiments using point absorption ocean wave energy and experimental data. Index Terms ­ energy conversion, wave energy harvesting, linear generator, ocean energy

  6. Haynes Wave Basin | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynnMassachusetts:Ohio:WebsiteInformationHawthorneNewHayfield,Wave

  7. Potential of Development and Application of Wave Energy Conversion Technology in the Gulf of Mexico 

    E-Print Network [OSTI]

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

    2014-01-01

    This paper focuses on the potential and application of developing wave energy technology in the Gulf of Mexico (GOM). The conditions (weather, wave climate, activity of the oil industry, etc.) in the GOM are assessed and the attributes of wave...

  8. The study of waves is clearly an important subject in acoustics because sound energy is transmitted by waves traveling though air. Furthermore, it turns out that the

    E-Print Network [OSTI]

    Robertson, William

    Waves The study of waves is clearly an important subject in acoustics because sound energy energy without any net movement of mass. In other words the energy in the wave moves from point A to point B without moving any material from A to B. After transmission of wave energy the medium is left

  9. On the tuning of a wave-energy driven oscillating-water-column seawater pump to polychromatic waves

    E-Print Network [OSTI]

    Godoy-Diana, Ramiro

    2007-01-01

    Performance of wave-energy devices of the oscillating water column (OWC) type is greatly enhanced when a resonant condition with the forcing waves is maintained. The natural frequency of such systems can in general be tuned to resonate with a given wave forcing frequency. In this paper we address the tuning of an OWC sea-water pump to polychromatic waves. We report results of wave tank experiments, which were conducted with a scale model of the pump. Also, a numerical solution for the pump equations, which were proven in previous work to successfully describe its behavior when driven by monochromatic waves, is tested with various polychromatic wave spectra. Results of the numerical model forced by the wave trains measured in the wave tank experiments are used to develop a tuning criterion for the sea-water pump.

  10. Study Pelamis system to capture energy of ocean wave

    E-Print Network [OSTI]

    Gobato, Ricardo; Fedrigo, Desire Francine Gobato

    2015-01-01

    Over the years, energy has become vital for humans, enabling us to comfort, leisure, mobility and other factors. The quest for cheap energy sources, renewable and clean has grown in recent years, mainly for the reduction of effects that comes degrading nature, allowing scientists and engineers to search for new technologies. Many energy sources have been researched for proper funding where some stand out for their ease of obtaining, by other low cost and others by being renewable. The main objective of this work is to study one of these energy sources - wave energy, whose capture is still in development. This energy comes from the waves of the sea and is 100% renewable and with minimal environmental impact when compared to hydro, nuclear, coal, thermal, etc. The system studied here is the Pelamis system.

  11. Energy Department Awards $7.4 Million to Develop Advanced Components...

    Energy Savers [EERE]

    take-off (PTO)-which converts mechanical motion into electrical power-and innovative structures. Waves, tides, and ocean currents represent a largely untapped renewable energy...

  12. Energy Department Announces $10.5 Million for Next-Generation...

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

    The funding opportunity includes two areas of interest: Increasing survivability of wave energy converter systems, thus decreasing capital costs or extending their life...

  13. convert program

    National Nuclear Security Administration (NNSA)

    %2A en Nuclear Material Removal http:www.nnsa.energy.govaboutusourprogramsdnnm3remove

    Pag...

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

    E-Print Network [OSTI]

    Tolbert, Leon M.

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

  15. Single Event Upset Energy Dependence In a Buck-Converter Power Supply Design

    E-Print Network [OSTI]

    Drake, G; The ATLAS collaboration; Gopalakrishnan, A; Mahadik, S; Mellado, B; Proudfoot, J; Reed, R; Senthilkumaran, A; Stanek, R

    2012-01-01

    We present a study of Single Event Upsets (SEU) performed on a commercial pulse-width modulator controller chip for switching power supplies. We performed tests to study the probability of an SEU occurring as a function of incident particle (hadron) energy. We discuss the performance of the circuit, and present a solution using external circuitry to effectively eliminate the effect.

  16. Numerical modeling of extreme rogue waves generated by directional energy focusing

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    Numerical modeling of extreme rogue waves generated by directional energy focusing Christophe that contributes to the generation of extreme waves, also known as rogue waves, in the ocean. To simulate and analyze this phenomenon, we generate extreme waves in a 3D numerical wave tank (NWT), by specifying

  17. EA-1917: Wave Energy Test Facility Project, Newport, OR

    Broader source: Energy.gov [DOE]

    This EA will evaluate the potential environmental impacts of a Wave Energy Test Facility that will be located near Newport, Oregon. The testing facility will be located within Oregon territorial waters, near the Hatfield Marine Science Center and close to onshore roads and marine support services. The site will not only allow testing of new wave energy technologies, but will also be used to help study any potential environmental impacts on sediments, invertebrates and fish. The project is being jointly funded by the State of Oregon and DOE.

  18. Thermoelectric energy converter for generation of electricity from low-grade heat

    DOE Patents [OSTI]

    Jayadev, T.S.; Benson, D.K.

    1980-05-27

    A thermoelectric energy conversion device which includes a plurality of thermoelectric elements is described. A hot liquid is supplied to one side of each element and a cold liquid is supplied to the other side of each element. The thermoelectric generator may be utilized to produce power from low-grade heat sources such as ocean thermal gradients, solar ponds, and low-grade geothermal resources. (WHK)

  19. OTRC Wave Basin | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPI VenturesNewSt. Louis, Minnesota:Nulato,Nyack, - Mining andChapterOTRC Wave

  20. Clean Wave Ventures | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (Utility Company) Jump to:New York:ClayBurnVita Jump to:Protection Tool forWave

  1. Heat Pump Water Heater using Solid-State Energy Converters | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy A plug-inPPLforLDRD Report11,Security Officer Program |quick referenceImage

  2. PP-299-1 Sea Breeze Olympic Converter LP | 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergy AEnergy Managing853926FamiliesBritish ColumbiaNorthernSharylandSea Breeze

  3. Liu UCD Phy9B 07 22 15-5. Energy in Wave Motion

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    Liu UCD Phy9B 07 22 15-5. Energy in Wave Motion x txy FtxFy -= ),( ),( t txy x txy FtxvtxFtxP yy -== ),(),( ),(),(),( For any wave on a string, instantaneous rate of energy transfer 1 dimensional: wave on a string #12;Liu UCD Phy9B 07 23 Energy Transferred by Sinusoidal Wave )cos(),( tkxAtxy -= For a sinusoidal wave )(sin

  4. Shell-instability generated waves by low energy electrons on converging magnetic field lines

    E-Print Network [OSTI]

    California at Berkeley, University of

    Shell-instability generated waves by low energy electrons on converging magnetic field lines D that the shell-instability can generate electrostatic and electromagnetic wave modes: whistler waves, electron´cre´au (2006), Shell-instability generated waves by low energy electrons on converging magnetic field lines

  5. Physics 5B Winter 2009 Rate of Energy Transfer by Sinusoidal Waves on a String

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    , Vibrations and Waves (W.W. Norton and Company, New York, 1971). First, we compute the kinetic energyPhysics 5B Winter 2009 Rate of Energy Transfer by Sinusoidal Waves on a String Consider the kinetic energy and the potential energy of this string segment due to the passage of a traveling wave

  6. A Full-Wave Rectifier for Interfacing with Multi-Phase Piezoelectric Energy Harvesters*

    E-Print Network [OSTI]

    Hurst, Paul J.

    : TECHNOLOGY TRENDS: Energy Sources and Energy Harvesting Abstract A full-wave rectifier has been fabricatedA Full-Wave Rectifier for Interfacing with Multi-Phase Piezoelectric Energy Harvesters* N. J, AND HURST 1 A Full-Wave Rectifier for Interfacing with Multi-Phase Piezoelectric Energy Harvesters* N. J

  7. Physics 5B Winter 2009 Rate of Energy Transfer by Sinusoidal Waves on a String

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Physics 5B Winter 2009 Rate of Energy Transfer by Sinusoidal Waves on a String Consider the kinetic energy and the potential energy of this string segment due to the passage of a traveling wave, Vibrations and Waves (W.W. Norton and Company, New York, 1971). First, we compute the kinetic energy

  8. ON THE GENERATION OF FLUX-TUBE WAVES IN STELLAR CONVECTION ZONES. IV. LONGITUDINAL WAVE ENERGY SPECTRA AND FLUXES FOR STARS WITH

    E-Print Network [OSTI]

    Ulmschneider, Peter

    ON THE GENERATION OF FLUX-TUBE WAVES IN STELLAR CONVECTION ZONES. IV. LONGITUDINAL WAVE ENERGY are important only for cool stars with Teff generated wave energy decreases. The maximum wave energy flux generated in Population II stars is 7 Â 108 ergs cmÀ2 sÀ1, and it is practically

  9. An alternative method for calculating the energy of gravitational waves

    E-Print Network [OSTI]

    Miroslav Sukenik; Jozef Sima

    1999-09-21

    In the expansive nondecelerative universe model, creation of matter occurs due to which the Vaidya metrics is applied. This fact allows for localizing gravitational energy and calculating the energy of gravitational waves using an approach alternative to the well established procedure based on quadrupole formula. Rationalization of the gradual increase in entropy of the Universe using relation describing the total curvature of space-time is given too.

  10. Converting environmentally hazardous materials into clean energy using a novel nanostructured photoelectrochemical fuel cell

    SciTech Connect (OSTI)

    Gan, Yong X.; Gan, Bo J.; Clark, Evan; Su, Lusheng; Zhang, Lihua

    2012-09-15

    Highlights: ? A photoelectrochemical fuel cell has been made from TiO{sub 2} nanotubes. ? The fuel cell decomposes environmentally hazardous materials to produce electricity. ? Doping the anode with a transition metal oxide increases the visible light sensitivity. ? Loading the anode with a conducting polymer enhances the visible light absorption. -- Abstract: In this work, a novel photoelectrochemical fuel cell consisting of a titanium dioxide nanotube array photosensitive anode and a platinum cathode was made for decomposing environmentally hazardous materials to produce electricity and clean fuel. Titanium dioxide nanotubes (TiO{sub 2} NTs) were prepared via electrochemical oxidation of pure Ti in an ammonium fluoride and glycerol-containing solution. Scanning electron microscopy was used to analyze the morphology of the nanotubes. The average diameter, wall thickness and length of the as-prepared TiO{sub 2} NTs were determined. The photosensitive anode made from the highly ordered TiO{sub 2} NTs has good photo-catalytic property, as proven by the decomposition tests on urea, ammonia, sodium sulfide and automobile engine coolant under ultraviolet (UV) radiation. To improve the efficiency of the fuel cell, doping the TiO{sub 2} NTs with a transition metal oxide, NiO, was performed and the photosensitivity of the doped anode was tested under visible light irradiation. It is found that the NiO-doped anode is sensitive to visible light. Also found is that polyaniline-doped photosensitive anode can harvest photon energy in the visible light spectrum range much more efficiently than the NiO-doped one. It is concluded that the nanostructured photoelectrochemical fuel cell can generate electricity and clean fuel by decomposing hazardous materials under sunlight.

  11. Wind Waves and Sun | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEtGeorgia:Illinois: Energy ResourcesTurboPower IncHomesWindWind

  12. Energy-momentum relation for solitary waves of nonlinear Dirac equations

    E-Print Network [OSTI]

    T. V. Dudnikova

    2014-04-28

    Solitary waves of nonlinear Dirac, Maxwell-Dirac and Klein-Gordon-Dirac equations are considered. We prove that the energy-momentum relation for solitary waves coincides with the Einstein energy-momentum relation for point particles.

  13. If current capacity were to be expanded so that all of the non-recycled municipal solid waste that is currently sent to U.S. landfills each year could instead be converted to energy, we could generate enough electricity

    E-Print Network [OSTI]

    Columbia University

    that is currently sent to U.S. landfills each year could instead be converted to energy, we could generate enough electricity to supply 13.8 million homes with power. If current capacity were to be expanded so that the U so that we could convert our non-recycled waste to alternative energy instead of landfilling it, we

  14. Hinsdale Wave Basin 1 | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNew Jersey: Energy Resources Jump to:Hilltop,Hinsdale County,1

  15. Hinsdale Wave Basin 2 | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNew Jersey: Energy Resources Jump to:Hilltop,Hinsdale County,12

  16. Maximum gravitational-wave energy emissible in magnetar flares

    E-Print Network [OSTI]

    Alessandra Corsi; Benjamin J. Owen

    2011-02-16

    Recent searches of gravitational-wave (GW) data raise the question of what maximum GW energies could be emitted during gamma-ray flares of highly magnetized neutron stars (magnetars). The highest energies (\\sim 10^{49} erg) predicted so far come from a model [K. Ioka, Mon. Not. Roy. Astron. Soc. 327, 639 (2001)] in which the internal magnetic field of a magnetar experiences a global reconfiguration, changing the hydromagnetic equilibrium structure of the star and tapping the gravitational potential energy without changing the magnetic potential energy. The largest energies in this model assume very special conditions, including a large change in moment of inertia (which was observed in at most one flare), a very high internal magnetic field, and a very soft equation of state. Here we show that energies of 10^{48}-10^{49} erg are possible under more generic conditions by tapping the magnetic energy, and we note that similar energies may also be available through cracking of exotic solid cores. Current observational limits on gravitational waves from magnetar fundamental modes are just reaching these energies and will beat them in the era of advanced interferometers.

  17. Wave energy potential in the Eastern Mediterranean Levantine Basin. An integrated 10-year study

    E-Print Network [OSTI]

    Georgiou, Georgios

    that remains to be covered before wave energy science and technology reach the maturity level of its windData bank Wave energy potential in the Eastern Mediterranean Levantine Basin. An integrated 10-year Article history: Received 30 July 2013 Accepted 25 March 2014 Available online Keywords: Wave energy

  18. Wave Energy Machine Louise Butler, Bilal Demir, Caleb Lee, Joe Meiners, Christian Rodin

    E-Print Network [OSTI]

    van den Berg, Jur

    . Introduction Design Kinematic Model Testing Current wave energy technology harvests the vertical motion Efficiency: 33% - 48% · Efficiency of existing wave energy technology: approximately 60% Data sheetWave Energy Machine Louise Butler, Bilal Demir, Caleb Lee, Joe Meiners, Christian Rodin Advisor: Dr

  19. Loops of Energy Bands for Bloch Waves in Optical Lattices By Matt Coles and Dmitry Pelinovsky

    E-Print Network [OSTI]

    Pelinovsky, Dmitry

    Loops of Energy Bands for Bloch Waves in Optical Lattices By Matt Coles and Dmitry Pelinovsky We in this context. These bifurcations generate loops in the energy bands of the Bloch waves near the ends is the possibility of loops in the energy bands associated with the nonlinear Bloch waves. This possibility was first

  20. Surface current effects on the fetch-limited growth of wave energy Brian K. Haus1

    E-Print Network [OSTI]

    Miami, University of

    Surface current effects on the fetch-limited growth of wave energy Brian K. Haus1 Received 5 the fetch-limited growth of wind wave energy over a region with significant lateral shear of the current. Both the near-surface currents and wave energy and period were mapped over the highly sheared inshore

  1. Free energy in plasmas under wave-induced diffusion Nathaniel J. Fish

    E-Print Network [OSTI]

    Free energy in plasmas under wave-induced diffusion Nathaniel J. Fish Princeton Plasma Physics of the plasma kinetic energy. In many cases of interest, the primary effect of the wave is to cause plasma extractable energy by waves so diffusing the plasma is a quantity of fundamental interest; it can be defined

  2. Nonhydrostatic and nonlinear contributions to the energy flux budget in nonlinear internal waves

    E-Print Network [OSTI]

    Fringer, Oliver B.

    Nonhydrostatic and nonlinear contributions to the energy flux budget in nonlinear internal waves S waves. Our results show that the contributions to the total energy flux from these additional terms as well as non- linearity. The partitioning of the incident internal wave energy over the course

  3. Cyclogenesis Simulation of Typhoon Prapiroon (2000) Associated with Rossby Wave Energy Dispersion*

    E-Print Network [OSTI]

    Li, Tim

    2000-01-01

    Cyclogenesis Simulation of Typhoon Prapiroon (2000) Associated with Rossby Wave Energy Dispersion (2000), in the western North Pacific, is simulated to understand the role of Rossby wave energy process is through the conventional barotropic Rossby wave energy dispersion, which enhances the low

  4. Tapping wave energy through Longuet-Higgins microseism effect , D. Lajoie2

    E-Print Network [OSTI]

    Boyer, Edmond

    Tapping wave energy through Longuet-Higgins microseism effect B. Molin1 , D. Lajoie2 , N. Jarry2 address the theoretical modeling of wave energy extraction with such a device, in the asymptotic case when´evel proposed that energy could be extracted from the waves with a heaving horizontal plate at the sea bottom

  5. Langlee Wave Power AS | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma, Arizona: Energy Resources JumpColorado:New

  6. Experimental Testing and Model Validation for Ocean Wave Energy Harvesting Buoys

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    , convert wave motion into electricity, to allow operation under all weather conditions, while enabling harvesting buoy systems, using the heave motion of the buoys to produce useful electrical power. Two for large scale grid power applications, but rather for relatively low-power ocean sensor and communications

  7. Wave equations for determining energy-level gaps of quantum systems

    E-Print Network [OSTI]

    Zeqian Chen

    2006-09-10

    An differential equation for wave functions is proposed, which is equivalent to Schr\\"{o}dinger's wave equation and can be used to determine energy-level gaps of quantum systems. Contrary to Schr\\"{o}dinger's wave equation, this equation is on `bipartite' wave functions. It is shown that those `bipartite' wave functions satisfy all the basic properties of Schr\\"{o}dinger's wave functions. Further, it is argued that `bipartite' wave functions can present a mathematical expression of wave-particle duality. This provides an alternative approach to the mathematical formalism of quantum mechanics.

  8. Wave Wind 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,VillageWarrensourceCentre Jump to: navigation, searchWind LLC

  9. C Wave Ltd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar Energy LLC JumpBiossenceBrunswick, Maine:IAEAT Jump to: navigation, searchLtd

  10. SeWave | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg,EnergyEastCarbonOpenSchulthess Group JumpScreening Tools

  11. Wave Power Plant Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThinWarsaw, Poland:Energy InformationWausau High SchoolInc Jump

  12. WaveCatcher Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThinWarsaw, Poland:Energy InformationWausau High

  13. Momentum and Energy Transport by Gravity Waves in Stochastically Driven Stratified Flows. Part II: Radiation of Gravity Waves from a Gaussian Jet

    E-Print Network [OSTI]

    Farrell, Brian F.

    Momentum and Energy Transport by Gravity Waves in Stochastically Driven Stratified Flows. Part II structures that dominate wave momentum and energy transport. When the interior of a typical midlatitude jet and energy at jet interior critical levels. Longer waves transport momentum and energy away from the jet

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

    E-Print Network [OSTI]

    Boyer, Edmond

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

  15. Horizontal displacements contribution to tsunami wave energy balance

    E-Print Network [OSTI]

    Dutykh, Denys; Chubarov, Leonid; Shokin, Yuriy

    2010-01-01

    The main reason for the generation of tsunamis is the deformation of the bottom of the ocean caused by an underwater earthquake. Usually, only the vertical bottom motion is taken into accound while the horizontal displacements are neglected. In the present paper we study both the vertical and the horizontal bottom motion while we propose a novel methodology for reconstructing the bottom coseismic displacements field which is transmitted to the free surface using a new three-dimensional Weakly Nonlinear (WN) approach. We pay a special attention to the evolution of kinetic and potential energies of the resulting wave while the contribution of horizontal displacements into wave energy balance is also quantified. Approaches proposed in this study are illustrated on the July 17, 2006 Java tsunami.

  16. The Dual Nature of Light Wave and Particle

    E-Print Network [OSTI]

    Cochran-Stafira, D. Liane

    converted to heat 44% visible light JUST RIGHT! suitable energy for life - photosynthesis absorbed1 The Dual Nature of Light Wave and Particle Light as a particle Particles or packets of light Photon carries fixed amount of energy Determines how fast it vibrates high energy = fast low energy

  17. Abstract--Wave energy will have a key role in meeting re-newable energy targets en route to a low carbon economy. How-

    E-Print Network [OSTI]

    Harrison, Gareth

    1 Abstract--Wave energy will have a key role in meeting re- newable energy targets en route will impact on wave energy conversion. Where the resource is restricted there may be reductions in energy the sensitivity of wave energy production and econom- ics to changes in climate. Index Terms--Wave energy

  18. Cosmology with space-based gravitational-wave detectors --- dark energy and primordial gravitational waves ---

    E-Print Network [OSTI]

    Atsushi Nishizawa; Kent Yagi; Atsushi Taruya; Takahiro Tanaka

    2012-02-24

    Proposed space-based gravitational-wave (GW) detectors such as DECIGO and BBO will detect ~10^6 neutron-star (NS) binaries and determine the luminosity distances to the binaries with high precision. Combining the luminosity distances with cosmologically-induced phase corrections on the GWs, cosmological expansion out to high redshift can be measured without the redshift determinations of host galaxies by electromagnetic observation and be a unique probe for dark energy. On the other hand, such a NS-binary foreground should be subtracted to detect primordial GWs produced during inflation. Thus, the constraining power on dark energy and the detectability of the primordial gravitational waves strongly depend on the detector sensitivity and are in close relation with one another. In this paper, we investigate the constraints on the equation of state of dark energy with future space-based GW detectors with/without identifying the redshifts of host galaxies. We also study the sensitivity to the primordial GWs, properly dealing with the residual of the NS binary foreground. Based on the results, we discuss the detector sensitivity required to achieve the forementioned targeted study of cosmology.

  19. On the energy transported by exact plane gravitational-wave solutions

    E-Print Network [OSTI]

    Yuri N. Obukhov; J. G. Pereira; Guillermo F. Rubilar

    2009-09-24

    The energy and momentum transported by exact plane gravitational-wave solutions of Einstein equations are computed using the teleparallel equivalent formulation of Einstein's theory. It is shown that these waves transport neither energy nor momentum. A comparison with the usual linear plane gravitational-waves solution of the linearized Einstein equation is presented.

  20. Equal energy phase space trajectories in resonant wave interactions O. Yaakobia

    E-Print Network [OSTI]

    Friedland, Lazar

    Equal energy phase space trajectories in resonant wave interactions O. Yaakobia and L. Friedlandb interacting wave systems with nonlinear frequency/ wave vector shifts is discussed. The corresponding these parameters vary in time or space. It is shown that the oscillation periods of two equal energy trajectories

  1. Energy deposition by Alfven waves into the dayside auroral oval: Cluster and FAST observations

    E-Print Network [OSTI]

    Carlson, Charles W.

    Energy deposition by Alfve´n waves into the dayside auroral oval: Cluster and FAST observations C observations from the Cluster and FAST spacecraft showing the deposition of energy into the auroral ionosphere from broadband ULF waves in the cusp and low-latitude boundary layer. A comparison of the wave Poynting

  2. Internal wave energy radiated from a turbulent mixed layer James R. Munroe1, a)

    E-Print Network [OSTI]

    Sutherland, Bruce

    Internal wave energy radiated from a turbulent mixed layer James R. Munroe1, a) and Bruce R of the mixed layer. In both experiments and simulations we find that the energy density of the generated waves examine mixed-layer deepening and the generation of internal waves in stratified fluid resulting from

  3. Higher Energy States in the CO Dimer: Millimeter-Wave Spectra and Rovibrational Calculations

    E-Print Network [OSTI]

    Higher Energy States in the CO Dimer: Millimeter-Wave Spectra and Rovibrational Calculations Leonid millimeter-wave data yielded the precise location of 33 new energy levels of A+ symmetry and 20 levels of A extensive millimeter-wave measurements of the 12C16O dimer have been made, and more than 300 new spectral

  4. GECCO Ocean Energy System Luis Maristany, Nicole Waters, Billy W. Wells Jr., Mario Suarez, Richard Gestewitz, Alexej Wiest,

    E-Print Network [OSTI]

    Wood, Stephen L.

    types of materials, supplies, as well as energy; however the exploration of wave energy as a resource is still in its infancy. The Florida Institute of Technology has constructed an alternative energy system Operation) is a wave energy converter that extracts kinetic energy from ocean waves using a rugged

  5. If current capacity were to be expanded so that all of the non-recycled municipal solid waste that is currently sent to U.S. landfills each year could instead be converted to energy, we could generate enough electricity

    E-Print Network [OSTI]

    If current capacity were to be expanded so that all of the non-recycled municipal solid waste.S. could convert all its non-recycled plastics into oil each year, we could produce 5.7 billion gallons so that we could convert our non-recycled waste to alternative energy instead of landfilling it, we

  6. Sandia Energy - EC Publications

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

    Further Development of SNL-SWAN, a Validated Wave Energy Converter Array Modeling ToolTara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download Filename SAND2014-2678C.pdf...

  7. Sandia Energy - EC Publications

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

    of Methods for Modeling Wave Energy Converter Survival in Extreme Sea StatesTara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download Filename SAND2014-1368.pdf filesize...

  8. Sandia Energy - EC Publications

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

    Sensitivity of a Wave Energy Converter Dynamics Model to Nonlinear Hydrostatic ModelsTara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download Version 1 date 2015 Downloaded...

  9. Sandia Energy - EC Publications

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

    Cross-flow TUrbine Simulation) (52) CACTUS User's Manual (54) Characterization of U.S. Wave Energy Converter (WEC) Test Sites: A Catalogue of Met-Ocean Data (31) Cost Breakdown...

  10. Sandia Energy - EC Publications

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

    Implementing Nonlinear Buoyancy and Excitation Forces in the WEC-Sim Wave Energy Converter Modeling ToolTara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download Filename...

  11. Sandia Energy - EC Publications

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

    Characterization of U.S. Wave Energy Converter (WEC) Test Sites: A Catalogue of Met-Ocean DataTara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download Version 1 date...

  12. Sandia Energy - EC Publications

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

    Technological Cost-Reduction Pathways for Attenuator Wave Energy Converters in the Marine Hydrokinetic EnvironmentTara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download...

  13. Sandia Energy - EC Publications

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

    Method for Simulating Non-Gaussian Wind Speed Time Series (2) Characterization of U.S. Wave Energy Converter (WEC) Test Sites: A Catalogue of Met-Ocean Data (31) Cost Breakdown...

  14. Sandia Energy - EC Publications

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

    Preliminary Verification and Validation of WEC-Sim, an Open-Source Wave Energy Converter Design ToolTara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download Filename...

  15. Sandia Energy - EC Publications

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

    Design and Analysis for a Floating Oscillating Surge Wave Energy ConverterTara Camacho-Lopez2015-04-06T22:15:34+00:00 Placeholder Download Filename 4-Yu-et-al.-2014.pdf Filesize 3...

  16. Experimental studies of the hydrodynamic characteristics of a sloped wave energy device 

    E-Print Network [OSTI]

    Lin, Chia-Po

    2000-07-19

    Many wave energy convertors are designed to use either vertical (heave) or horizontal (surge) movements of waves. But the frequency response of small heaving buoys and oscillating water column devices shows that they are ...

  17. An evaluation of the potential of coastal wetlands for hurricane surge and wave energy reduction 

    E-Print Network [OSTI]

    Loder, Nicholas Mason

    2009-05-15

    potential, a segmented marsh may offer comparable surge protection to that of a continuous marsh. Wave heights are generally increased within the marsh due to the transmission of wave energy through marsh channels. Results presented in this thesis may assist...

  18. Asymptotic Stability and Completeness in the Energy Space for Nonlinear Schrödinger Equations with Small Solitary Waves

    E-Print Network [OSTI]

    Stephen Gustafson; Kenji Nakanishi; Tai-Peng Tsai

    2003-08-06

    In this paper we study a class of nonlinear Schr\\"odinger equations which admit families of small solitary wave solutions. We consider solutions which are small in the energy space $H^1$, and decompose them into solitary wave and dispersive wave components. The goal is to establish the asymptotic stability of the solitary wave and the asymptotic completeness of the dispersive wave. That is, we show that as $t \\to \\infty$, the solitary wave component converges to a fixed solitary wave, and the dispersive component converges to a solution of the free Schr\\"odinger equation.

  19. Power Converters for Accelerators

    E-Print Network [OSTI]

    Visintini, R

    2015-01-01

    Particle accelerators use a great variety of power converters for energizing their sub-systems; while the total number of power converters usually depends on the size of the accelerator or combination of accelerators (including the experimental setup), the characteristics of power converters depend on their loads and on the particle physics requirements: this paper aims to provide an overview of the magnet power converters in use in several facilities worldwide.

  20. Switching Power Converter A/D Converters

    E-Print Network [OSTI]

    to make intelligent decisions on load and system management prior to system faults. With the increased use of the converter [1]. Traditionally, system monitoring and control is performed by a central power management

  1. MHK Projects/Oregon Coastal Wave Energy | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050 JumpCoos Bay OPTHalf|MyetteNavitasOrcadian Wave

  2. Wave Energy Conversion Overview and it's Renewable Energy Potential for the Oil and Gas Industry 

    E-Print Network [OSTI]

    Pastor, J.; Liu, Y.; Dou, Y.

    2014-01-01

    Ocean energy conversion has been of interest for many years. Recent developments such as concern over global warming have renewed interest in the topic. Part II provides an overview of the energy density found in ocean waves and how it is calculated...

  3. University of Iowa Wave Basin | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThin FilmUnited States: Energy ResourcesPark CommunityWindIowa Wave

  4. 5-ft Wave Flume Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAand Dalton JumpProgram | Open Energy Information 55 et64ft Wave Flume

  5. 6-ft Wave Flume Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAand Dalton JumpProgram | Open Energy Information 55ft Wave Flume

  6. MHK Technologies/Ocean Wave Air Piston | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMI Combined Energy SystemTreaderWave Air

  7. Semiclassical wave functions and energy spectra in polygon billiards

    E-Print Network [OSTI]

    Stefan Giller

    2014-12-01

    A consistent scheme of semiclassical quantization in polygon billiards by wave function formalism is presented. It is argued that it is in the spirit of the semiclassical wave function formalism to make necessary rationalization of respective quantities accompanied the procedure of the semiclassical quantization in polygon billiards. Unfolding rational polygon billiards (RPB) into corresponding Riemann surfaces (RS) periodic structures of the latter are demonstrated with 2g independent periods on the respective multitori with g as their genuses. However it is the two dimensional real space of the real linear combinations of these periods which is used for quantizing RPB. A class of doubly rational polygon billiards (DRPB) is distinguished for which these real linear relations are rational and their semiclassical quantization by wave function formalism is presented. It is shown that semiclassical quantization of both the classical momenta and the energy spectra are determined completely by periodic structure of the corresponding RS. Each RS is then reduced to elementary polygon patterns (EPP) as its basic periodic elements. Each such EPP can be glued to a torus of genus g. Semiclassical wave functions (SWF) are then constructed on EPP. The SWF for DRPB appear to be exact. They satisfy the Dirichlet, the Neumannn or the mixed boundary conditions. Not every mixing is allowed however and a respective incompleteness of SWF is discussed. Dens families of DRPB are used for approximate semiclassical quantization of RPB. General rational polygons are quantized by approximating them by DRPB. An extension of the formalism to irrational polygons is described as well. The semiclassical approximations constructed in the paper are controlled by general criteria of the eigenvalue theory. A relation between the superscar solutions and SWF constructed in the paper is also discussed.

  8. Stress-wave energy management through material anisotropy Alireza V. Amirkhizi, Aref Tehranian, Sia Nemat-Nasser

    E-Print Network [OSTI]

    Nemat-Nasser, Sia

    Stress-wave energy management through material anisotropy Alireza V. Amirkhizi, Aref Tehranian, Sia that if this axis initially coincides with the stress-wave vector, then the energy of the plane waves would closely the required anisotropy, and to experimentally demonstrate the management of stress-wave energy in a desired

  9. Model-predicted distribution of wind-induced internal wave energy in the world's oceans

    E-Print Network [OSTI]

    Miami, University of

    Model-predicted distribution of wind-induced internal wave energy in the world's oceans Naoki 9 July 2008; published 30 September 2008. [1] The distribution of wind-induced internal wave energy-scaled kinetic energy are all consistent with the available observations in the regions of significant wind

  10. A presentation of the U.S. Navy's Wave Energy Test Site (WETS)

    E-Print Network [OSTI]

    Frandsen, Jannette B.

    A presentation of the U.S. Navy's Wave Energy Test Site (WETS) Patrick Cross Senior Project Specialist Hawaii Natural Energy Institute School of Ocean and Earth Science and Technology University of Hawaii Abstract The U.S. Navy's Wave Energy Test Site (WETS) in Hawaii is now fully operational

  11. Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part II: Numerical Simulations*

    E-Print Network [OSTI]

    Wang, Bin

    Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part (1987) and Fiorino and Els- berry (1989) showed that a cyclonic vortex experiences Rossby wave energy) ABSTRACT The cyclogenesis events associated with the tropical cyclone (TC) energy dispersion are simulated

  12. SWASH-BASED WAVE ENERGY REFLECTION ON NATURAL Rafael Almar1

    E-Print Network [OSTI]

    SWASH-BASED WAVE ENERGY REFLECTION ON NATURAL BEACHES Rafael Almar1 , Raimundo Ibaceta2 and the nature of reflected waves is crucial for various aspects of coastal science including energy balance others), have underlined the key role played by swash zone dynamics in controling the phase and energy

  13. Unravelling the influence of water depth and wave energy on the facies diversity of shelf carbonates

    E-Print Network [OSTI]

    Purkis, Sam

    Unravelling the influence of water depth and wave energy on the facies diversity of shelf their production is tied to light and wave energy, carbonate sediments are most effectively produced in shallow energy regime to be reliable indicators of facies type when considered in isolation. Consid- ered

  14. ENERGY EFFICIENT MILLIMETER WAVE RADIO LINK ESTABLISHMENT WITH SMART ARRAY ANTENNAS

    E-Print Network [OSTI]

    Baras, John S.

    1 ENERGY EFFICIENT MILLIMETER WAVE RADIO LINK ESTABLISHMENT WITH SMART ARRAY ANTENNAS Behnam of two millimeter wave transceiver nodes A and B. We assume that each node is equipped with a circular. INTRODUCTION Millimeter wave technology is becoming increasingly important in many military and commercial

  15. Electrostatic electron cyclotron waves generated by low-energy electron beams

    E-Print Network [OSTI]

    Scudder, Jack

    Electrostatic electron cyclotron waves generated by low-energy electron beams J. D. Menietti, O the role of electron beams with E ] 1 keV in the generation of these waves. Observed plasma parameters. D. Scudder, J. S. Pickett, and D. A. Gurnett, Electrostatic electron cyclotron waves generated

  16. Coda wave interferometry and the equilibration of energy in elastic media Roel Snieder

    E-Print Network [OSTI]

    Snieder, Roel

    Coda wave interferometry and the equilibration of energy in elastic media Roel Snieder Department of Geophysics and Center for Wave Phenomena, Colorado School of Mines, Golden, Colorado 80401 Received 14 May 2002; published 21 October 2002 Multiple-scattered waves usually are not useful for creating

  17. One-Way Wave Propagation Through Smoothly Varying Media Controlling the Energy Production at Home

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    One-Way Wave Propagation Through Smoothly Varying Media Controlling the Energy Production at Home, Citadel T100 As part of the application called migration or reflection seismic imaging, we model wave propagation through the earth, governed by the acoustic wave equation. Downward continuation is a technique

  18. Heteroclinic standing waves in defocussing DNLS equations -- Variational approach via energy minimization

    E-Print Network [OSTI]

    Michael Herrmann

    2010-02-08

    We study heteroclinic standing waves (dark solitons) in discrete nonlinear Schr\\"{o}dinger equations with defocussing nonlinearity. Our main result is a quite elementary existence proof for waves with monotone and odd profile, and relies on minimizing an appropriately defined energy functional. We also study the continuum limit and the numerical approximation of standing waves.

  19. Gravitational wave energy spectrum of a parabolic encounter

    E-Print Network [OSTI]

    Christopher P. L. Berry; Jonathan R. Gair

    2010-11-18

    We derive an analytic expression for the energy spectrum of gravitational waves from a parabolic Keplerian binary by taking the limit of the Peters and Matthews spectrum for eccentric orbits. This demonstrates that the location of the peak of the energy spectrum depends primarily on the orbital periapse rather than the eccentricity. We compare this weak-field result to strong-field calculations and find it is reasonably accurate (~10%) provided that the azimuthal and radial orbital frequencies do not differ by more than ~10%. For equatorial orbits in the Kerr spacetime, this corresponds to periapse radii of rp > 20M. These results can be used to model radiation bursts from compact objects on highly eccentric orbits about massive black holes in the local Universe, which could be detected by LISA.

  20. New localized Superluminal solutions to the wave equations with finite total energies and arbitrary frequencies

    E-Print Network [OSTI]

    Michel Zamboni-Rached; Erasmo Recami; Hugo E. Harnandez-Figueroa

    2002-10-02

    By a generalized bidirectional decomposition method, we obtain many new Superluminal localized solutions to the wave equation (for the electromagnetic case, in particular) which are suitable for arbitrary frequency bands; various of them being endowed with finite total energy. We construct, among the others, an infinite family of generalizations of the so-called "X-shaped" waves. [PACS nos.: 03.50.De; 41.20;Jb; 83.50.Vr; 62.30.+d; 43.60.+d; 91.30.Fn; 04.30.Nk; 42.25.Bs; 46.40.Cd; 52.35.Lv. Keywords: Wave equations; Wave propagation; Localized beams; Superluminal waves; Bidirectional decomposition; Bessel beams; X-shaped waves; Microwaves; Optics; Special relativity; Acoustics; Seismology; Mechanical waves; Elastic waves; Gravitational waves; Elementary particle physics].

  1. Ocean Wave Energy Company OWECO | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPI VenturesNewSt. Louis,Energy Information AreaCountyEnergy Company OWECO

  2. Ocean Wave Wind Energy Ltd OWWE | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPI VenturesNewSt. Louis,Energy Information AreaCountyEnergy Company

  3. Energy Department Announces $10 million for Wave Energy Demonstration at

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n cEnergy (AZ,LocalEfficiency |<Technologies | Department of

  4. Interleaved power converter

    DOE Patents [OSTI]

    Zhu, Lizhi (Canton, MI)

    2007-11-13

    A power converter architecture interleaves full bridge converters to alleviate thermal management problems in high current applications, and may, for example, double the output power capability while reducing parts count and costs. For example, one phase of a three phase inverter is shared between two transformers, which provide power to a rectifier such as a current doubler rectifier to provide two full bridge DC/DC converters with three rather than four high voltage inverter legs.

  5. Medium-induced jet evolution: wave turbulence and energy loss

    E-Print Network [OSTI]

    Leonard Fister; Edmond Iancu

    2014-09-06

    We study the gluon cascade generated via successive medium-induced branchings by an energetic parton propagating through a dense QCD medium. We focus on the high-energy regime where the energy $E$ of the leading particle is much larger than the characteristic medium scale $\\omega_c=\\hat q L^2/2$, with $\\hat q$ the jet quenching parameter and $L$ the distance travelled through the medium. In this regime the leading particle loses only a small fraction $\\sim\\alpha_s(\\omega_c/E)$ of its energy and can be treated as a steady source of radiation for gluons with energies $\\omega\\le\\omega_c$. For this effective problem with a source, we obtain exact analytic solutions for the gluon spectrum and the energy flux. The solutions exhibit wave turbulence: the basic physical process is a continuing fragmentation which is `quasi-democratic' (i.e. quasi-local in energy) and which provides an energy transfer from the source to the medium at a rate (the energy flux $\\mathcal{F}$) which is quasi-independent of $\\omega$. The locality of the branching process implies a spectrum of the Kolmogorov-Obukhov type, i.e. a power-law spectrum which is a fixed point of the branching process and whose strength is proportional to the energy flux: $D(\\omega)\\sim\\mathcal{F}/\\sqrt\\omega$ for $\\omega\\ll\\omega_c$. Via this turbulent flow, the gluon cascade loses towards the medium an energy $\\Delta E\\sim\\alpha_s^2\\omega_c$, which is independent of the initial energy $E$ of the leading particle and of the details of the thermalization mechanism at the low-energy end of the cascade. This energy is carried away by very soft gluons, which propagate at very large angles with respect to the jet axis. Our predictions for the value of $\\Delta E$ and for its angular distribution appear to agree quite well, qualitatively and even semi-quantitatively, with the phenomenology of di-jet asymmetry in nucleus-nucleus collisions at the LHC.

  6. Track 2: Sustainable Energy I. Renewable Energy: Wind and Wave

    E-Print Network [OSTI]

    of Poseidon's device.!!!! Cal-ePower Vertical-Axis Wind Turbine (VAWT) Produces High Power Densities Summer A: the oncoming air that drives the turbine also impedes the returning blades.!!!! Vertical-Axis Wind Turbine. Scobell, California Energy & Power!! Small wind turbines can provide power for individual home owners

  7. Photon Science for Renewable Energy

    E-Print Network [OSTI]

    Hussain, Zahid

    2010-01-01

    convert solar energy into electricity using earth- abundantin converting solar energy into electricity are needed in

  8. Oregon Wave Energy Trust OWET | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPIProtectio Program | Open EnergyInformationSitingSystems (DEQRights

  9. NREL Refines Method to Convert Lignin to Nylon Precursor - News...

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

    to Convert Lignin to Nylon Precursor Recent Findings Published in Energy & Environmental Science February 26, 2015 A new study from the Energy Department's National Renewable...

  10. WETGen (Wave Energy Turbine GENerator) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,Village of Wellington,FL97-11 SEPA Rules Jump to:22WEWETGen

  11. Offshore Wave Energy Ltd OWEL | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop Inc Jump to:Newberg, Oregon:OGE Energy Resources,Electric CooperativeLtd OWEL Jump

  12. SyncWave Energy Inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EIS ReportEuropeEnergySustainabilitySynapsense Corporation Jump

  13. Wave Energy Technology New Zealand | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThinWarsaw, Poland:Energy InformationWausau High School JumpNew

  14. Green Wave Energy Corp GWEC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View New Pages RecentPlantMagmaIncentivesEnergy | OpenWind

  15. MHK Technologies/Wave Energy Conversion Activator WECA | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMIS DTocardoInformation Energy

  16. Energy Department Launches Competition to Drive Innovations in Wave Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum12, 2015 Infographic courtesy ofDepartment ofDepartment of EnergyCampaign|

  17. Stress-wave energy management through material anisotropy Alireza V. Amirkhizi, Aref Tehranian, Sia Nemat-Nasser

    E-Print Network [OSTI]

    Nemat-Nasser, Sia

    Stress-wave energy management through material anisotropy Alireza V. Amirkhizi, Aref Tehranian, Sia February 2010 Accepted 11 March 2010 Available online 27 March 2010 Stress-wave propagation in solids can that if this axis initially coincides with the stress-wave vector, then the energy of the plane waves would closely

  18. SMOOTH TYPE II BLOW UP SOLUTIONS TO THE FOUR DIMENSIONAL ENERGY CRITICAL WAVE EQUATION

    E-Print Network [OSTI]

    Raphaël, Pierre

    SMOOTH TYPE II BLOW UP SOLUTIONS TO THE FOUR DIMENSIONAL ENERGY CRITICAL WAVE EQUATION MATTHIEU HILLAIRET AND PIERRE RAPHA¨EL Abstract. We exhibit C type II blow up solutions to the focusing energy critical wave equation in dimension N = 4. These solutions admit near blow up time a decomposiiton u(t, x

  19. Ion energy measurements in a Direct Wave-Drive Matthew S. Feldman

    E-Print Network [OSTI]

    Ion energy measurements in a Direct Wave-Drive Thruster Matthew S. Feldman and Edgar Y. Choueiri difference is a DWDT operates continuously to inject wave momentum, whereas PIT discharges its energy Propulsion Laboratory, California Institute of Technology, Pasadena, California, 91109, USA An experiment

  20. Version 2.0 Ground state wave function and energy of the lithium atom

    E-Print Network [OSTI]

    Pachucki, Krzysztof

    Version 2.0 Ground state wave function and energy of the lithium atom Mariusz Puchalski Abstract Highly accurate nonrelativistic ground­state wave function and energy of the lithium atom# 6 corrections has been obtained for few low lying states of helium only [2, 3], not for lithium nor

  1. Shock-Wave Attenuation and Energy-Dissipation Potential of Granular Materials

    E-Print Network [OSTI]

    Grujicic, Mica

    Shock-Wave Attenuation and Energy-Dissipation Potential of Granular Materials Mica Grujicic, B this approach, both compression shocks and decompression waves are treated as (stress, specific volume, particle velocity, mass-based internal energy density, temperature, and mass-based entropy density) propagating

  2. Electromagnetic Surface Wave Propagation Applicable to UltraHigh Energy Neutrino

    E-Print Network [OSTI]

    Electromagnetic Surface Wave Propagation Applicable to UltraHigh Energy Neutrino Detection Peter ultrahigh energy cosmic rays (UHECR), which would typically interact very close to the surface. Since of electromagnetic surface waves and their propagation is presented. The charged particle shower is modelled

  3. Local energy decay and Strichartz estimates for the wave equation with time-periodic

    E-Print Network [OSTI]

    Petkov, Vesselin

    Local energy decay and Strichartz estimates for the wave equation with time-periodic perturbations(z) = (U(T, 0) - z)-1 , (x) C 0 (Rn ), where U(t, s) is the propagator related to the wave equation) and T > 0 is the period. Assuming that R(z) has no poles z with |z| 1, we establish a local energy decay

  4. Alpha channeling in rotating plasma with stationary waves Abraham J. Fetterman and Nathaniel J. Fisch

    E-Print Network [OSTI]

    particle energy. Alpha channeling uses radiofrequency waves to remove alpha particles collisionlessly at low energy. It is shown that stationary magnetic fields with high n can be used for this purpose, and simulations indicate that a large fraction of the alpha energy can be converted to rotation energy. © 2010

  5. Fast magnetosonic waves launched by transient, current sheet reconnection D. W. Longcope

    E-Print Network [OSTI]

    Priest, Eric

    the separatrix at a rate consistent with the external wave propagation. The majority of the magnetic energy magnetic energy to both heat and kinetic energy. The structure of magnetic reconnection in these mod- els, they convert magnetic energy into heat and kine

  6. Semi-empirical Probability Distributions and Their Application in Wave-Structure Interaction Problems 

    E-Print Network [OSTI]

    Izadparast, Amir Hossein

    2012-02-14

    energetic ocean waves may be converted to usable energy, utilizing Wave Energy Convertor (WEC) devices. The random characteristic of ocean environment requires engineers to consider the effects of random variability of the pertinent variables...-1 SEMI-EMPIRICAL PROBABILITY DISTRIBUTIONS AND THEIR APPLICATION IN WAVE-STRUCTURE INTERACTION PROBLEMS A Dissertation by AMIR HOSSEIN IZADPARAST Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

  7. MHK Projects/Douglas County Wave Energy Project | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050 JumpCoos Bay OPT Wave ParkDouglas County Wave Energy

  8. IEEE INFOCOM 2002 1 Design of Wavelength Converting Switches for

    E-Print Network [OSTI]

    Turner, Jonathan S.

    IEEE INFOCOM 2002 1 Design of Wavelength Converting Switches for Optical Burst Switching Jeyashankher Ramamirtham, Jonathan Turner Abstract-- Optical Burst Switching (OBS) is an experi- mental network- tronic control. In this paper, we study two designs for wave- length converting switches

  9. Ocean Engineering 34 (2007) 23742384 On the tuning of a wave-energy driven oscillating-water-column

    E-Print Network [OSTI]

    Godoy-Diana, Ramiro

    2007-01-01

    2006; accepted 15 May 2007 Available online 21 May 2007 Abstract Performance of wave-energy devices, 2003). An OWC wave energy device intended for seawater pumping, involving no generation of electricity

  10. Loss of purity by wave packet scattering at low energies

    E-Print Network [OSTI]

    Jia Wang; C. K. Law; M. -C. Chu

    2006-01-06

    We study the quantum entanglement produced by a head-on collision between two gaussian wave packets in three-dimensional space. By deriving the two-particle wave function modified by s-wave scattering amplitudes, we obtain an approximate analytic expression of the purity of an individual particle. The loss of purity provides an indicator of the degree of entanglement. In the case the wave packets are narrow in momentum space, we show that the loss of purity is solely controlled by the ratio of the scattering cross section to the transverse area of the wave packets.

  11. Measurement and Interpretation of Interaction of MeV Energy Protons with Lower Hybrid Waves in JET Plasmas

    E-Print Network [OSTI]

    Measurement and Interpretation of Interaction of MeV Energy Protons with Lower Hybrid Waves in JET Plasmas

  12. The unexpected role of D waves in low-energy neutral pion photoproduction

    E-Print Network [OSTI]

    C. Fernandez-Ramirez

    2009-12-21

    It has been commonly assumed that low-energy neutral pion photoproduction from the proton can be described accounting only for S and P waves, and that higher partial waves are irrelevant. We have found that this assumption is not correct and that the inclusion of D waves is necessary to obtain a reliable extraction of the $E_{0+}$ multipole from experimental data. This is due in large measure to the spontaneous breaking of chiral symmetry in QCD which leads to very small S-wave contributions. This makes the usual partial wave expansion less accurate and although D waves are small, their contribution is enhanced through the interference with P waves, which compromises the S-wave extraction from data if D waves are not taken into account. In our work we have used Heavy Baryon Chiral Perturbation Theory to one loop, and up to ${\\cal O}(q^4)$, to account for the S and P waves, while D waves are added in an almost model-independent way using standard Born terms and vector mesons. We also show that higher partial waves do not play an important role.

  13. Third-order Coulomb corrections to the S-wave Green function, energy levels and wave functions at the origin

    E-Print Network [OSTI]

    M. Beneke; Y. Kiyo; K. Schuller

    2007-05-30

    We obtain analytic expressions for the third-order corrections due to the strong interaction Coulomb potential to the S-wave Green function, energy levels and wave functions at the origin for arbitrary principal quantum number n. Together with the known non-Coulomb correction this results in the complete spectrum of S-states up to order alpha_s^5. The numerical impact of these corrections on the Upsilon spectrum and the top quark pair production cross section near threshold is estimated.

  14. Generating Isolated Outputs in a Multilevel Modular Capacitor Clamped DC-DC Converter

    E-Print Network [OSTI]

    Tolbert, Leon M.

    -dc converters based on inductive energy transfer method (IETM) such as buck, boost, and buck-boost converter967 Generating Isolated Outputs in a Multilevel Modular Capacitor Clamped DC-DC Converter (MMCCC clamped dc-dc converter. The multilevel modular capacitor clamped converter (MMCCC) has several key

  15. Introduction Counterpropagating interactions Numerical methods Co-propagating interactions A result on energy transfer Solitary water wave interactions

    E-Print Network [OSTI]

    Craig, Walter

    on energy transfer Solitary water wave interactions Walter Craig Department of Mathematics & Statistics (energy loss) and S (amplitude change). Walter Craig McMaster University Solitary wave interactions #12 (energy loss) and S (amplitude change). Walter Craig McMaster University Solitary wave interactions #12

  16. Energy Transport by Nonlinear Internal Waves College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, Oregon

    E-Print Network [OSTI]

    Balasubramanian, Ravi

    Energy Transport by Nonlinear Internal Waves J. N. MOUM College of Oceanic and Atmospheric Sciences in the bottom bound- ary layer. In the nonlinear internal waves that were observed, the kinetic energy. The energy transported by these waves includes a nonlinear advection term uE that is negligible in linear

  17. Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part I: Satellite Data Analyses*

    E-Print Network [OSTI]

    Li, Tim

    Tropical Cyclogenesis Associated with Rossby Wave Energy Dispersion of a Preexisting Typhoon. Part with the Rossby wave energy dispersion of a preexisting TC. The wave trains are oriented in a northwest induced by tropical cyclone (TC) energy dispersion are revealed based on the Quick Scatterometer (Quik

  18. Experimental and Numerical Study of Spar Buoy-magnet/spring Oscillators Used as Wave Energy Annette R. Grilli

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    Experimental and Numerical Study of Spar Buoy-magnet/spring Oscillators Used as Wave Energy.g., latching) of the SSLG, in order to further improve power generation. KEYWORDS : Wave energy systems networks), based on captur- ing renewable wave energy. To do so, we design and optimize a new type

  19. 27.5 A Single-Inductor ACDC Piezoelectric Energy-Harvester/Battery-Charger IC Converting (0.35 to 1.2V) to (2.7 to 4.5V)

    E-Print Network [OSTI]

    Rincon-Mora, Gabriel A.

    1 27.5 A Single-Inductor AC­DC Piezoelectric Energy-Harvester/Battery- Charger IC Converting ±(0, GA Microscale integration constrains energy and the lifetime microsystems like wireless sensors and quiescent current nonetheless limit the input voltage range of the system and dissipate power. The harvester-charger

  20. Voltage Converter TYPICAL APPLICATION

    E-Print Network [OSTI]

    Berns, Hans-Gerd

    1 LTC660 100mA CMOS Voltage Converter TYPICAL APPLICATION U s Simple Conversion of 5V to ­5V Supply s Output Drive: 100mA s ROUT: 6.5 (0.65V Loss at 100mA) s BOOST Pin (Pin 1) for Higher Switching Frequency-capacitor voltage converter. It performs supply voltage conversion from positive to negative from an input range

  1. Resonant energy conversion of 3-minute intensity oscillations into Alfven waves in the solar atmosphere

    E-Print Network [OSTI]

    D. Kuridze; T. V. Zaqarashvili

    2007-03-19

    Nonlinear coupling between 3-minute oscillations and Alfven waves in the solar lower atmosphere is studied. 3-minute oscillations are considered as acoustic waves trapped in a chromospheric cavity and oscillating along transversally inhomogeneous vertical magnetic field. It is shown that under the action of the oscillations the temporal dynamics of Alfven waves is governed by Mathieu equation. Consequently, the harmonics of Alfven waves with twice period and wavelength of 3-minute oscillations grow exponentially in time near the layer where the sound and Alfven speeds equal. Thus the 3-minute oscillations are resonantly absorbed by pure Alfven waves near this resonant layer. The resonant Alfven waves may penetrate into the solar corona taking energy from the chromosphere. Therefore the layer c_s=v_A may play a role of energy channel for otherwise trapped acoustic oscillations.

  2. Energy propagation by transverse waves in multiple flux tube systems using filling factors

    SciTech Connect (OSTI)

    Van Doorsselaere, T.; Gijsen, S. E.; Andries, J.; Verth, G. E-mail: stief.gijsen@wis.kuleuven.be E-mail: g.verth@sheffield.ac.uk

    2014-11-01

    In the last few years, it has been found that transverse waves are present at all times in coronal loops or spicules. Their energy has been estimated with an expression derived for bulk Alfvén waves in homogeneous media, with correspondingly uniform wave energy density and flux. The kink mode, however, is localized in space with the energy density and flux dependent on the position in the cross-sectional plane. The more relevant quantities for the kink mode are the integrals of the energy density and flux over the cross-sectional plane. The present paper provides an approximation to the energy propagated by kink modes in an ensemble of flux tubes by means of combining the analysis of single flux tube kink oscillations with a filling factor for the tube cross-sectional area. This finally allows one to compare the expressions for energy flux of Alfvén waves with an ensemble of kink waves. We find that the correction factor for the energy in kink waves, compared to the bulk Alfvén waves, is between f and 2f, where f is the density filling factor of the ensemble of flux tubes.

  3. Investigation of Nonequilibrium Internal Energy Excitation in Shock Waves by means of a Spectral-Lagrangian

    E-Print Network [OSTI]

    Investigation of Nonequilibrium Internal Energy Excitation in Shock Waves by means of a Spectral energy) to a multi energy level gas. The numerical method is based on the weak form of the collision to account for both elastic and inelastic collisions, the latter being responsible for internal energy

  4. 15.1 Preliminaries: Wave Motion and Light 15.2 Experimental Basis of Energy Quantization

    E-Print Network [OSTI]

    Ihee, Hyotcherl

    #12;15.1 Preliminaries: Wave Motion and Light #12;#12;#12;15.2 Experimental Basis of Energy the radical concept of energy quantization to explain two of these results. #12;Blackbody Radiation · Every object emits energy through thermal radiation from its surface. · This energy is carried

  5. Natural rubber for sustainable high-power electrical energy generation

    E-Print Network [OSTI]

    Suo, Zhigang

    to harvest ocean wave energy,2 but they are not economically competitive. These devices couple with the ocean no technology exists to convert such mechanical motions to electricity economically. Other sources of mechanical to satisfy the total worldwide demand for electrical energy.1 No technologies, however, exist to convert

  6. Dissipation of Modified Entropic Gravitational Energy Through Gravitational Waves

    E-Print Network [OSTI]

    Clovis Jacinto de Matos

    2011-11-04

    The phenomenological nature of a new gravitational type interaction between two different bodies derived from Verlinde's entropic approach to gravitation in combination with Sorkin's definition of Universe's quantum information content, is investigated. Assuming that the energy stored in this entropic gravitational field is dissipated under the form of gravitational waves and that the Heisenberg principle holds for this system, one calculates a possible value for an absolute minimum time scale in nature $\\tau=15/16 \\frac{\\Lambda^{1/2}\\hbar G}{c^4}\\sim9.27\\times10^{-105}$ seconds, which is much smaller than the Planck time $t_{P}=(\\hbar G/c^5)^{1/2}\\sim 5.38\\times10^{-44}$ seconds. This appears together with an absolute possible maximum value for Newtonian gravitational forces generated by matter $F_g=32/30\\frac{c^7}{\\Lambda \\hbar G^2}\\sim 3.84\\times 10^{165}$ Newtons, which is much higher than the gravitational field between two Planck masses separated by the Planck length $F_{gP}=c^4/G\\sim1.21\\times10^{44}$ Newtons.

  7. February 5, 2013 10:35 9in x 6in Advances in Wave Turbulence b1517-ch02 2nd Reading Fluctuations of the Energy Flux in Wave Turbulence

    E-Print Network [OSTI]

    Falcon, Eric

    Fluctuations of the Energy Flux in Wave Turbulence S. Auma^itre , E. Falcon,§ and S. Fauve SPEC, DSM, CEA.falcon@univ-paris-diderot.fr The key governing parameter of wave turbulence is the energy flux that drives the waves and cascades of energy among different scales through the weak interaction between waves. It was understood first

  8. Ulysses observations of magnetic waves due to newborn interstellar pickup ions. II. Application of turbulence concepts to limiting wave energy and observability

    SciTech Connect (OSTI)

    Cannon, Bradford E.; Smith, Charles W.; Isenberg, Philip A.; Vasquez, Bernard J.; Joyce, Colin J.; Murphy, Neil; Nuno, Raquel G. E-mail: Charles.Smith@unh.edu E-mail: Bernie.Vasquez@unh.edu E-mail: Neil.Murphy@jpl.nasa.gov

    2014-06-01

    The low-frequency magnetic waves that arise from the isotropization of newborn interstellar pickup ions (PUIs) are reasonably well described by linear and quasi-linear kinetic theory in so far as those theories predict the wave frequency and polarization in the spacecraft frame. Those theories fail to describe the scarce observability of the waves. Quasilinear theory predicts that the wave power should accumulate over long periods of time as the relatively weak kinetic instability slowly adds power to the observed spectrum. At the same time it has been argued that the same wave energy must serve as a secondary source of thermal ion heating in the outer heliosphere once the initial turbulence is depleted. To the extent that turbulent transport of the wave energy acts against the spectrally confined accumulation of wave energy, turbulence should be a limiting factor in observability. We argue that turbulence does limit the observability of the waves and we use turbulence theory to predict the observed wave energy. We compare this prediction against a database of 502 wave observations attributed to newborn interstellar PUIs observed by the Ulysses spacecraft.

  9. Waves

    E-Print Network [OSTI]

    LaCure, Mari Mae

    2010-04-29

    the surface of my drawings with a subtle vibration of energy. I work on thin paper that records and responds to my drawn marks by bending, stretching, and crinkling. The long fibers of the Mulberry paper bend with a strength and flexibility like... the fibers of the paper to swell and buckle. I use watercolor to hand print woodblocks, which has a similar effect on the paper with the added pressure of the printed impression. Particles of Mica illuminate the surface of the paper by reflecting light...

  10. Vector generator scan converter

    DOE Patents [OSTI]

    Moore, James M. (Livermore, CA); Leighton, James F. (Livermore, CA)

    1990-01-01

    High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O (input/output) channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardward for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold.

  11. Vector generator scan converter

    DOE Patents [OSTI]

    Moore, J.M.; Leighton, J.F.

    1988-02-05

    High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardware for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold. 7 figs.

  12. Optimisation and comparison of integrated models of direct-drive linear machines for wave energy conversion 

    E-Print Network [OSTI]

    Crozier, Richard Carson

    2014-06-30

    Combined electrical and structural models of five types of permanent magnet linear electrical machines suitable for direct-drive power take-off on wave energy applications are presented. Electromagnetic models were ...

  13. Novel millimeter wave sensor concepts for energy, environment, and national security

    E-Print Network [OSTI]

    Sundaram, S. K.

    Millimeter waves are ideally suited for sensing and diagnosing materials, devices, and processes that are broadly important to energy, environment, and national security. Thermal return reflection (TRR) techniques that ...

  14. Global energy conversion rate from geostrophic flows into internal lee waves in the deep ocean

    E-Print Network [OSTI]

    Nikurashin, Maxim

    A global estimate of the energy conversion rate from geostrophic flows into internal lee waves in the ocean is presented. The estimate is based on a linear theory applied to bottom topography at O(1–10) km scales obtained ...

  15. MHK Projects/US Navy Wave Energy Technology WET Program at Marine...

    Open Energy Info (EERE)

    MHK ProjectsUS Navy Wave Energy Technology WET Program at Marine Corps Base Hawaii MCBH < MHK Projects Jump to: navigation, search << Return to the MHK database homepage Loading...

  16. Department of Energy Awards $37 Million for Marine and Hydrokinetic...

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

    will obtain critical technical and cost performance data for one of the most advanced wave energy converters in the U.S. DOE Funding: 2,400,000. Total Project Value:...

  17. Energy Momentum Pseudo-Tensor of Relic Gravitational Wave in Expanding Universe

    E-Print Network [OSTI]

    Daiqin Su; Yang Zhang

    2012-04-04

    We study the energy-momentum pseudo-tensor of gravitational wave, and examine the one introduced by Landau-Lifshitz for a general gravitational field and the effective one recently used in literature. In short wavelength limit after Brill-Hartle average, both lead to the same gauge invariant stress tensor of gravitational wave. For relic gravitational waves in the expanding universe, we examine two forms of pressure, $p_{gw}$ and $\\mathcal{P}_{gw}$, and trace the origin of their difference to a coupling between gravitational waves and the background matter. The difference is shown to be negligibly small for most of cosmic expansion stages starting from inflation. We demonstrate that the wave equation is equivalent to the energy conservation equation using the pressure $\\mathcal{P}_{gw}$ that includes the mentioned coupling.

  18. Refraction of electromagnetic energy for wave packets incident on a negative-index medium is always negative

    E-Print Network [OSTI]

    Sridhar, Srinivas

    Refraction of electromagnetic energy for wave packets incident on a negative-index medium is always, including the model of Valanju et al., the energy and mo- mentum of the wave refract negatively. Since February 2004 We analyze refraction of electromagnetic wave packets on passing from an isotropic positive

  19. Mapping and Assessment of the United States Ocean Wave Energy Resource

    SciTech Connect (OSTI)

    Paul T. Jacobson; George Hagerman; George Scott

    2011-12-01

    This project estimates the naturally available and technically recoverable U.S. wave energy resources, using a 51-month Wavewatch III hindcast database developed especially for this study by National Oceanographic and Atmospheric Administration�¢����s (NOAA�¢����s) National Centers for Environmental Prediction. For total resource estimation, wave power density in terms of kilowatts per meter is aggregated across a unit diameter circle. This approach is fully consistent with accepted global practice and includes the resource made available by the lateral transfer of wave energy along wave crests, which enables wave diffraction to substantially reestablish wave power densities within a few kilometers of a linear array, even for fixed terminator devices. The total available wave energy resource along the U.S. continental shelf edge, based on accumulating unit circle wave power densities, is estimated to be 2,640 TWh/yr, broken down as follows: 590 TWh/yr for the West Coast, 240 TWh/yr for the East Coast, 80 TWh/yr for the Gulf of Mexico, 1570 TWh/yr for Alaska, 130 TWh/yr for Hawaii, and 30 TWh/yr for Puerto Rico. The total recoverable wave energy resource, as constrained by an array capacity packing density of 15 megawatts per kilometer of coastline, with a 100-fold operating range between threshold and maximum operating conditions in terms of input wave power density available to such arrays, yields a total recoverable resource along the U.S. continental shelf edge of 1,170 TWh/yr, broken down as follows: 250 TWh/yr for the West Coast, 160 TWh/yr for the East Coast, 60 TWh/yr for the Gulf of Mexico, 620 TWh/yr for Alaska, 80 TWh/yr for Hawaii, and 20 TWh/yr for Puerto Rico.

  20. MULTILEVEL CONVERTERS - A NEW BREED OF POWER CONVERTERS Jih-Sheng...

    Office of Scientific and Technical Information (OSTI)

    has been a well-known method and has been implemented in 18- and 48-pulse converters for battery energy storage and static condenser (STATCON) applications, respectively 15,161....