Sample records for offshore maximum number

  1. CONTINUOUS FATIGUE ASSESSMENT OF AN OFFSHORE WIND TURBINE USING A LIMITED NUMBER OF VIBRATION SENSORS

    E-Print Network [OSTI]

    Boyer, Edmond

    CONTINUOUS FATIGUE ASSESSMENT OF AN OFFSHORE WIND TURBINE USING A LIMITED NUMBER OF VIBRATION, Modal decomposition and expansion, Finite Element Model INTRODUCTION Offshore wind turbines are exposed locations along the structure. This is not the case though in monopile offshore wind turbines, where fatigue

  2. ON THE PROBLEM OF UNIQUENESS FOR THE MAXIMUM STIRLING NUMBER(S) OF THE SECOND KIND

    E-Print Network [OSTI]

    Pomerance, Carl

    ON THE PROBLEM OF UNIQUENESS FOR THE MAXIMUM STIRLING NUMBER(S) OF THE SECOND KIND E. Rodney Say that an integer n is exceptional if the maximum Stirling number of the second kind S(n, k) occurs or equal to x is O(x3/5+ ), for any > 0. 1. Introduction Let S(n, k) be the Stirling number of the second

  3. Maximum stellar mass versus cluster membership number revisited

    E-Print Network [OSTI]

    Th. Maschberger; C. J. Clarke

    2008-09-05T23:59:59.000Z

    We have made a new compilation of observations of maximum stellar mass versus cluster membership number from the literature, which we analyse for consistency with the predictions of a simple random drawing hypothesis for stellar mass selection in clusters. Previously, Weidner and Kroupa have suggested that the maximum stellar mass is lower, in low mass clusters, than would be expected on the basis of random drawing, and have pointed out that this could have important implications for steepening the integrated initial mass function of the Galaxy (the IGIMF) at high masses. Our compilation demonstrates how the observed distribution in the plane of maximum stellar mass versus membership number is affected by the method of target selection; in particular, rather low n clusters with large maximum stellar masses are abundant in observational datasets that specifically seek clusters in the environs of high mass stars. Although we do not consider our compilation to be either complete or unbiased, we discuss the method by which such data should be statistically analysed. Our very provisional conclusion is that the data is not indicating any striking deviation from the expectations of random drawing.

  4. U.S. Lower 48 States Offshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb Mar Apr MayNov-142,234Cubic

  5. U.S.Lower 48 States Offshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecade Year-0SalesFour-Dimensional Seismic

  6. U.S.Lower 48 States Offshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecade Year-0SalesFour-Dimensional

  7. U.S.Lower 48 States Offshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecade

  8. U.S. Lower 48 States Offshore Maximum Number of Active Crews Engaged in

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet) U.S.Developmental WellsYear Jan FebYear Jan

  9. U.S.Lower 48 States Offshore Maximum Number of Active Crews Engaged in

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet)Year Jan Feb Monthly AnnualCubic

  10. U.S.Lower 48 States Offshore Maximum Number of Active Crews Engaged in

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet)Year Jan Feb Monthly AnnualCubicThree-Dimensional

  11. U.S.Lower 48 States Offshore Maximum Number of Active Crews Engaged in

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet)Year Jan Feb Monthly

  12. Offshore Wind Power USA

    Broader source: Energy.gov [DOE]

    The Offshore Wind Power USA conference provides the latest offshore wind market updates and forecasts.

  13. Alaska Maximum Number of Active Crews Engaged in Two-Dimensional Seismic

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at Commercial andSeptemberProcessedDecade Year-0Surveying (Number of

  14. The number e^{(1/2)} is the ratio between the time of maximum value and the time of maximum growth rate for restricted growth phenomena?

    E-Print Network [OSTI]

    Zi-Niu Wu

    2013-10-02T23:59:59.000Z

    For many natural process of growth, with the growth rate independent of size due to Gibrat law and with the growth process following a log-normal distribution, the ratio between the time (D) for maximum value and the time (L) for maximum growth rate (inflexion point) is then equal to the square root of the base of the natural logarithm (e^{1/2}). On the logarithm scale this ratio becomes one half ((1/2)). It remains an open question, due to lack of complete data for various cases with restricted growth, whether this e^{1/2} ratio can be stated as e^{1/2}-Law. Two established examples already published, one for an epidemic spreading and one for droplet production, support however this ratio. Another example appears to be the height of humain body. For boys the maximum height occurs near 23 years old while the maximum growth rate is at the age near 14, and there ratio is close to e^{1/2}. The main theoretical base to obtain this conclusion is problem independent, provided the growth process is restricted, such as public intervention to control the spreading of communicable epidemics, so that an entropy is associated with the process and the role of dissipation, representing the mechanism of intervention, is maximized. Under this formulation the principle of maximum rate of entropy production is used to make the production process problem independent.

  15. Sensitivity Analysis of Offshore Wind Cost of Energy (Poster)

    SciTech Connect (OSTI)

    Dykes, K.; Ning, A.; Graf, P.; Scott, G.; Damiami, R.; Hand, M.; Meadows, R.; Musial, W.; Moriarty, P.; Veers, P.

    2012-10-01T23:59:59.000Z

    No matter the source, offshore wind energy plant cost estimates are significantly higher than for land-based projects. For instance, a National Renewable Energy Laboratory (NREL) review on the 2010 cost of wind energy found baseline cost estimates for onshore wind energy systems to be 71 dollars per megawatt-hour ($/MWh), versus 225 $/MWh for offshore systems. There are many ways that innovation can be used to reduce the high costs of offshore wind energy. However, the use of such innovation impacts the cost of energy because of the highly coupled nature of the system. For example, the deployment of multimegawatt turbines can reduce the number of turbines, thereby reducing the operation and maintenance (O&M) costs associated with vessel acquisition and use. On the other hand, larger turbines may require more specialized vessels and infrastructure to perform the same operations, which could result in higher costs. To better understand the full impact of a design decision on offshore wind energy system performance and cost, a system analysis approach is needed. In 2011-2012, NREL began development of a wind energy systems engineering software tool to support offshore wind energy system analysis. The tool combines engineering and cost models to represent an entire offshore wind energy plant and to perform system cost sensitivity analysis and optimization. Initial results were collected by applying the tool to conduct a sensitivity analysis on a baseline offshore wind energy system using 5-MW and 6-MW NREL reference turbines. Results included information on rotor diameter, hub height, power rating, and maximum allowable tip speeds.

  16. Coupled Dynamic Analysis of Large-Scale Mono-Column Offshore Wind Turbine with a Single Tether Hinged in Seabed

    E-Print Network [OSTI]

    Chen, Jieyan

    2012-10-19T23:59:59.000Z

    The increased interest in the offshore wind resource in both industry and academic and the extension of the wind field where offshore wind turbine can be deployed has stimulated quite a number of offshore wind turbines concepts. This thesis presents...

  17. Coupled Dynamic Analysis of Large-Scale Mono-Column Offshore Wind Turbine with a Single Tether Hinged in Seabed 

    E-Print Network [OSTI]

    Chen, Jieyan

    2012-10-19T23:59:59.000Z

    The increased interest in the offshore wind resource in both industry and academic and the extension of the wind field where offshore wind turbine can be deployed has stimulated quite a number of offshore wind turbines concepts. This thesis presents...

  18. Scour around an offshore wind turbine W.F. Louwersheimer

    E-Print Network [OSTI]

    Langendoen, Koen

    Scour around an offshore wind turbine MSc Thesis W.F. Louwersheimer January, 2007 Delft University #12;Scour around an offshore wind turbine Delft University of Technology Ballast Nedam - Egmond iii Scour around an offshore wind turbine W.F. Louwersheimer Student number 1067419 January, 2007

  19. Outsourcing, offshoring and the US office market

    E-Print Network [OSTI]

    Topolewski, Tanya M., 1969-

    2004-01-01T23:59:59.000Z

    There is intense debate among industry analysts and scholars over potential job losses caused by offshoring. The real estate industry has been grappling to understanding the implications of these numbers, as some have ...

  20. Sandia Energy - Offshore Wind RD&D: Large Offshore Rotor Development

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

    Offshore Rotor Development Home Stationary Power Energy Conversion Efficiency Wind Energy Offshore Wind Offshore Wind RD&D: Large Offshore Rotor Development Offshore Wind RD&D:...

  1. Sandia Energy - Offshore Wind RD&D: Large Offshore Rotor Development

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

    Offshore Wind RD&D: Large Offshore Rotor Development Home Stationary Power Energy Conversion Efficiency Wind Energy Offshore Wind Offshore Wind RD&D: Large Offshore Rotor...

  2. Offshore Wind Geoff Sharples

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Offshore Wind Geoff Sharples geoff@clearpathenergyllc.com #12;Frequently Unanswered Ques?ons · Why don't "they" build more offshore wind? · Why not make States Cape Wind PPA at 18 c/kWh #12;The cycle of non-innova?on Offshore

  3. CONGRESSIONAL BRIEFING Offshore Wind

    E-Print Network [OSTI]

    Firestone, Jeremy

    CONGRESSIONAL BRIEFING Offshore Wind Lessons Learned from Europe: Reducing Costs and Creating Jobs Thursday, June 12, 2014 Capitol Visitors Center, Room SVC 215 Enough offshore wind capacity to power six the past decade. What has Europe learned that is applicable to a U.S. effort to deploy offshore wind off

  4. NaREC Offshore and Drivetrain Test Facility Collaboration: Cooperative Research and Development Final Report, CRADA Number CRD-04-140

    SciTech Connect (OSTI)

    Musial, W.

    2014-08-01T23:59:59.000Z

    The National Renewable Energy Laboratory (NREL) and the National Renewable Energy Centre (NaREC) in the United Kingdom (UK) have a mutual interest in collaborating in the development of full-scale offshore wind energy and drivetrain testing facilities. NREL and NaREC will work together to share resources and experiences in the development of future wind energy test facilities. This Cooperative Research and Development Agreement (CRADA) includes sharing of test protocols, infrastructure cost data, test plans, pro forma contracting instruments, and safe operating strategies. Furthermore, NREL and NaREC will exchange staff for training and development purposes.

  5. Accelerating Offshore Wind Development

    Broader source: Energy.gov [DOE]

    Today the Energy Department announced investments in seven offshore wind demonstration projects. Check out our map to see where these projects will be located.

  6. VOLUME 81, NUMBER 1 P H Y S I C A L R E V I E W L E T T E R S 6 JULY 1998 Maximum Entropy Principle for Lattice Kinetic Equations

    E-Print Network [OSTI]

    Gorban, Alexander N.

    VOLUME 81, NUMBER 1 P H Y S I C A L R E V I E W L E T T E R S 6 JULY 1998 Maximum Entropy Principle of the entropy maximum principle to take into account additional constraints. We consider a class of lattices, I-00161 Roma, Italy (Received 17 September 1997; revised manuscript received 7 May 1998) The entropy

  7. MODULAR MULTI-LEVEL CONVERTER BASED HVDC SYSTEM FOR GRID CONNECTION OF OFFSHORE WIND

    E-Print Network [OSTI]

    Chaudhary, Sanjay

    MODULAR MULTI-LEVEL CONVERTER BASED HVDC SYSTEM FOR GRID CONNECTION OF OFFSHORE WIND POWER PLANT U off-shore wind power plants. The MMC consists of a large number of simple voltage sourced converter offshore wind power plants (WPP) because they offer higher energy yield due to a superior wind profile

  8. A FRESH LOOK AT OFFSHORE WIND OPPORTUNITIES IN MASSACHUSETTS Anthony L. Rogers, Ph.D.

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    A FRESH LOOK AT OFFSHORE WIND OPPORTUNITIES IN MASSACHUSETTS Anthony L. Rogers, Ph.D. James F at Amherst Amherst, MA 01003 The utilization of offshore winds for generating electricity was first proposed that offshore wind development anywhere would be unlikely. More recently, a number of European countries have

  9. A Multistage Stochastic Programming Approach for the Planning of Offshore Oil or Gas Field Infrastructure

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    1 A Multistage Stochastic Programming Approach for the Planning of Offshore Oil or Gas Field, Houston, TX 77098 Abstract The planning of offshore oil or gas field infrastructure under uncertainty is addressed in this paper. The main uncertainties considered are in the initial maximum oil or gas flowrate

  10. Energy from Offshore Wind: Preprint

    SciTech Connect (OSTI)

    Musial, W.; Butterfield, S.; Ram, B.

    2006-02-01T23:59:59.000Z

    This paper provides an overview of the nascent offshore wind energy industry including a status of the commercial offshore industry and the technologies that will be needed for full market development.

  11. Dynamic analysis of a 5 megawatt offshore floating wind turbine

    E-Print Network [OSTI]

    Harriger, Evan Michael

    2011-01-01T23:59:59.000Z

    Why offshore wind energy? Offshore wind turbines have theturbine will also uncover potential problems that exist with offshore wind energy.

  12. Assessment of Offshore Wind System Design, Safety, and Operation Standards

    SciTech Connect (OSTI)

    Sirnivas, S.; Musial, W.; Bailey, B.; Filippelli, M.

    2014-01-01T23:59:59.000Z

    This report is a deliverable for a project sponsored by the U.S. Department of Energy (DOE) entitled National Offshore Wind Energy Resource and Design Data Campaign -- Analysis and Collaboration (contract number DE-EE0005372; prime contractor -- AWS Truepower). The project objective is to supplement, facilitate, and enhance ongoing multiagency efforts to develop an integrated national offshore wind energy data network. The results of this initiative are intended to 1) produce a comprehensive definition of relevant met-ocean resource assets and needs and design standards, and 2) provide a basis for recommendations for meeting offshore wind energy industry data and design certification requirements.

  13. Offshore Renewable Energy Solutions

    E-Print Network [OSTI]

    and sustainable energy supply. The UK is uniquely placed to harness its natural resources ­ wind, wave and tidal power ­ to meet its target of achieving 15% of energy consumption from renewable sources by 2020. CefasOffshore Renewable Energy Solutions #12;Cefas: meeting complex requirements The Centre

  14. The Future of Offshore Wind Energy

    E-Print Network [OSTI]

    Firestone, Jeremy

    1 The Future of Offshore Wind Energy #12;2 #12;3 Offshore Wind Works · Offshore wind parks: 28 in 10 countries · Operational since 1991 · Current installed capacity: 1,250 MW · Offshore wind parks in the waters around Europe #12;4 US Offshore Wind Projects Proposed Atlantic Ocean Gulf of Mexico Cape Wind

  15. A National Offshore Wind Strategy: Creating an Offshore Wind...

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

    Strategic plan for accelerating the responsible deployment of offshore wind energy in the United States. nationaloffshorewindstrategy.pdf More Documents & Publications Southeast...

  16. Feasibility of suspension culture of oysters at an offshore site on the Texas coast

    E-Print Network [OSTI]

    Ogle, John Thomas

    1975-01-01T23:59:59.000Z

    depleted due to death and vandalism, depriving the 20- month experiment of a control. It was decided to retain the oysters at the offshore station to follow survival and to initiate another experiment. As oyster numbers offshore had declined...FEASIBILITY OF SUSPENSION CULTURE OF OYSTERS AT AN OFFSHORE SITE ON THE TEXAS COAST A Thesis by JOHN THOMAS OGLE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER...

  17. Cost of Offshore Wind Energy Charlene Nalubega

    E-Print Network [OSTI]

    Mountziaris, T. J.

    water as well as on land based wind farms. The specific offshore wind energy case under consideration, most of the offshore wind farms are in Europe, which started being developed in the early 1990's Cost of Offshore Wind Energy

  18. Optimizing Installation, Operation, and Maintenance at Offshore...

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

    Optimizing Installation, Operation, and Maintenance at Offshore Wind Projects in the United States Optimizing Installation, Operation, and Maintenance at Offshore Wind Projects in...

  19. American Wind Energy Association Offshore WINDPOWER Conference...

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

    American Wind Energy Association Offshore WINDPOWER Conference & Exhibition American Wind Energy Association Offshore WINDPOWER Conference & Exhibition October 7, 2014 9:00AM EDT...

  20. Three Offshore Wind Advanced Technology Demonstration Projects...

    Office of Environmental Management (EM)

    Offshore Wind Advanced Technology Demonstration Projects Receive Phase 2 Funding Three Offshore Wind Advanced Technology Demonstration Projects Receive Phase 2 Funding September...

  1. Kentish Flats Offshore Wind Farm

    E-Print Network [OSTI]

    Firestone, Jeremy

    Kentish Flats Offshore Wind Farm #12;By August 2005 the offshore wind farm at Kentish Flats plateau just outside the main Thames shipping lanes. The Kentish Flats wind farm will comprise 30 of the wind farm could be up to 90 MW. For the benefit of the environment The British Government has set

  2. Offshore Wind Potential Tables

    Wind Powering America (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells, Wisconsin: EnergyWyandanch,EagaAbout PrintableEducationOffshore wind

  3. How to reduce sigma in offshore pipe fabrications

    SciTech Connect (OSTI)

    Still, J.

    1999-11-01T23:59:59.000Z

    The use of stainless steel for offshore oil and gas applications has increased dramatically over the last 20 years. Stainless steels fall into a number of categories depending on the composition and microstructure formed after heat treatment. Selection of pipe materials for offshore applications is dependent on the product to be carried. Austenitic and ferritic/austenitic (duplex) stainless steels are commonly used for process and utility piping systems offshore, whereas martensitic and ferritic are restricted to specific applications. Reference to sigma in offshore welding specifications has been mixed. Previously, the identification of sigma was wither not quoted or stated as being not permitted. However, achieving zero sigma content in duplex stainless steel welds and HAZs is questionable, particularly in steels and weld metals having a high chromium and molybdenum content. In the real world, how does one ensure that production welds performed offshore are free of sigma--or have a limited volume fraction of it--without having to constantly monitor welder performance? This review examines the difficulties and controls required to limit the presence of sigma in austenitic and duplex weld metals and HAZs associated with offshore piping and pipeline systems. Materials described here are those manufactured using contemporary steel making processes.

  4. Offshore Wind Turbines: Some Technical Challenges

    E-Print Network [OSTI]

    Houlsby, Guy T.

    1 Offshore Wind Turbines: Some Technical Challenges Prof. Guy Houlsby FREng Oxford University House engineers concerned with installation of offshore wind turbines. The author is Professor of Civil University Civil Engineering Offshore wind power · Scale of offshore wind power developments · Engineering

  5. Horns RevHorns Rev Offshore Wind FarmOffshore Wind Farm

    E-Print Network [OSTI]

    Horns RevHorns Rev Offshore Wind FarmOffshore Wind Farm #12;Prepared for: ELSAM A/S, Overgade 45 prior to the construction of an offshore wind farm at Horns Rev, situated approximately 15 km off

  6. Sandia Energy - Offshore Wind RD&D: Sediment Transport

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

    Transport Home Stationary Power Energy Conversion Efficiency Wind Energy Offshore Wind Offshore Wind RD&D: Sediment Transport Offshore Wind RD&D: Sediment TransportTara...

  7. U.S. Offshore Wind Advanced Technology Demonstration Projects...

    Energy Savers [EERE]

    U.S. Offshore Wind Advanced Technology Demonstration Projects Public Meeting Transcript for Offshore Wind Demonstrations U.S. Offshore Wind Advanced Technology Demonstration...

  8. Sandia Energy - Innovative Offshore Vertical-Axis Wind Turbine...

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

    Innovative Offshore Vertical-Axis Wind Turbine Rotors Home Stationary Power Energy Conversion Efficiency Wind Energy Offshore Wind Innovative Offshore Vertical-Axis Wind Turbine...

  9. Offshoring and Directed Technical Change

    E-Print Network [OSTI]

    Acemoglu, Daron

    2012-11-24T23:59:59.000Z

    To study the short-run and long-run implications on wage inequality, we introduce directed technical change into a Ricardian model of offshoring. A unique final good is produced by combining a skilled and an unskilled ...

  10. A study of cyclic pressuremeter testing for offshore applications

    E-Print Network [OSTI]

    Riner, Kenneth Byard

    1984-01-01T23:59:59.000Z

    volume corresponding to the bottom of the Nth cycle. For the curve shown in Figure 1, the secant' shear modulus and the cyclic shear modulus for the Nth cycle are calculated as follows: ~Z(M) P (r +r ) T(N) 4 (r r) R T(N) B(N) ~C(N) T(N) B(N) (2... of cycles. Discussion of C clic Loads Offshore structures are subjected to a complicated and varying wave loading history. The number of wave loading cycles to which an offshore platform may be subjected throughout its life is around 10 cycles...

  11. Offshore Wind Energy Market Overview (Presentation)

    SciTech Connect (OSTI)

    Baring-Gould, I.

    2013-07-01T23:59:59.000Z

    This presentation describes the current international market conditions regarding offshore wind, including the breakdown of installation costs, how to reduce costs, and the physical siting considerations considered when planning offshore wind construction. The presentation offers several examples of international existing and planned offshore wind farm sites and compares existing international offshore resources with U.S. resources. The presentation covers future offshore wind trends and cites some challenges that the United States must overcome before it will be able to fully develop offshore wind sites.

  12. Reassessment of offshore platforms

    SciTech Connect (OSTI)

    Nair, V.V.D.; Kuhn, J.M. (Mobil Research and Development Corporation, Dallas, TX (United States))

    1993-05-01T23:59:59.000Z

    Data from Hurricane Andrew demonstrated that the systems and procedures in place for evacuating offshore workers and minimizing oil spills and environmental damage functioned as planned. While the vast majority of the platforms survived the storm with no damage, a few of the older platforms (installed prior to 1972) either collapsed or suffered severe damage. The collapsed platforms were designed with insufficient deck height to clear the storm waves. In recent years, the API RP 2A has introduced guidance for minimum air gap, minimum structures, platform inspection and platform reuse. These provisions, coupled with natural attribution of the older platforms, will significantly improve the performance of platforms in the future. The reliability of NDT techniques to detect major structural defects should be improved through continued research. While flooded member detection is used by several operators as a screening tool to detect major defects underwater, its reliability is not always good and further research is needed in this area. Another area of high priority research is related to the use of Remotely Operated Vehicles (ROV) to perform underwater inspection of structures. 51 refs., 7 figs.

  13. New Report Characterizes Existing Offshore Wind Grid Interconnection...

    Office of Environmental Management (EM)

    New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities September 3,...

  14. Horns RevHorns Rev Offshore Wind FarmOffshore Wind Farm

    E-Print Network [OSTI]

    Horns RevHorns Rev Offshore Wind FarmOffshore Wind Farm #12;Prepared for: ELSAM A/S, Overgade 45 to establish an offshore wind farm with an output of 150 MW in the waters of Horns Rev, approximately 15 km off to some environmental guidelines for offshore wind farms prepared by the Dani

  15. Offshore Coastal Wind Speed Gradients: issues for the design and development of large offshore windfarms

    E-Print Network [OSTI]

    Pryor, Sara C.

    -situ and remote sensing data from offshore wind farms in Denmark, are used to examine both horizontal and vertical the area of the wind farm appear to be small and negligible. 1. INTRODUCTION As large offshore wind farmsOffshore Coastal Wind Speed Gradients: issues for the design and development of large offshore

  16. Infauna Monitoring Horns Rev Offshore Wind Farm

    E-Print Network [OSTI]

    Infauna Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2003 #12;Infauna Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2003 Published: 13 May 2004 Prepared: Michael Bech

  17. Offshore Wind Power Farm Environmental Impact Assessment

    E-Print Network [OSTI]

    Horns Rev Offshore Wind Power Farm Environmental Impact Assessment on Water Quality #12;Prepared with a planned 150 MW offshore wind farm at Horns Rev, an assessment was made of the effects the wind farm would for the preparation of EIA studies for offshore wind farms." Horns Rev is situated off Blåvands Huk, which is Denmark

  18. OFFSHORE WIND FARMS Guidance note for Environmental

    E-Print Network [OSTI]

    OFFSHORE WIND FARMS Guidance note for Environmental Impact Assessment In respect of FEPA and CPA requirements Version 2 - June 2004 #12;Offshore Wind Farms: Guidance Note for Environmental Impact Assessment 2004 #12;Offshore Wind Farms: Guidance Note for Environmental Impact Assessment in Respect of FEPA

  19. CONMOW: Condition Monitoring for Offshore Wind Farms

    E-Print Network [OSTI]

    1 CONMOW: Condition Monitoring for Offshore Wind Farms Edwin Wiggelinkhuizen, Theo Verbruggen, Henk in practice the European project CONMOW (Condition Monitoring for Offshore Wind Farms) was started in November for Offshore Wind Farms) was started in November 2002. This paper briefly describes the CONMOW project approach

  20. Offshore wind resource assessment through satellite images

    E-Print Network [OSTI]

    1 Slide no. 4 Offshore wind resource assessment through satellite images Charlotte Bay Hasager images for offshore wind ressource assessment in lieu of in-situ mast observations #12;4 Slide no Hasager, Dellwik, Nielsen and Furevik, 2004, Validation of ERS-2 SAR offshore wind-speed maps in the North

  1. National Offshore Wind Energy Grid Interconnection Study

    SciTech Connect (OSTI)

    Daniel, John P. [ABB Inc; Liu, Shu [ABB Inc; Ibanez, Eduardo [National Renewable Energy Laboratory; Pennock, Ken [AWS Truepower; Reed, Greg [University of Pittsburgh; Hanes, Spencer [Duke Energy

    2014-07-30T23:59:59.000Z

    The National Offshore Wind Energy Grid Interconnection Study (NOWEGIS) considers the availability and potential impacts of interconnecting large amounts of offshore wind energy into the transmission system of the lower 48 contiguous United States. A total of 54GW of offshore wind was assumed to be the target for the analyses conducted. A variety of issues are considered including: the anticipated staging of offshore wind; the offshore wind resource availability; offshore wind energy power production profiles; offshore wind variability; present and potential technologies for collection and delivery of offshore wind energy to the onshore grid; potential impacts to existing utility systems most likely to receive large amounts of offshore wind; and regulatory influences on offshore wind development. The technologies considered the reliability of various high-voltage ac (HVAC) and high-voltage dc (HVDC) technology options and configurations. The utility system impacts of GW-scale integration of offshore wind are considered from an operational steady-state perspective and from a regional and national production cost perspective.

  2. Fiber glass pipe effective for offshore water handling

    SciTech Connect (OSTI)

    Turnipseed, S.P. [Chevron Research and Technology Co., Richmond, CA (United States)

    1995-07-03T23:59:59.000Z

    Excellent corrosion resistance, weight savings, ease of construction, and reduced maintenance make fiber glass pipe attractive for water-handling service on offshore platforms. This article covers guidelines for fiber glass pipe installations and presents a number of case histories from the industry and Chevron Corp. Applications include seawater treatment, water injection, sewage and drains, deluge fire water systems, hose reel fire water, seawater cooling, produced water, and potable water. The paper gives usage guidelines.

  3. ASSESSMENT OF METHODS USED TO INVESTIGATE THE IMPACT OF OFFSHORE

    E-Print Network [OSTI]

    Aberdeen, University of

    ASSESSMENT OF METHODS USED TO INVESTIGATE THE IMPACT OF OFFSHORE WIND FARMS ON SEABIRDS Kate Louise....................................................................................2 Environmental impact assessments for offshore wind developments..................7 Study aims Chapter three: Offshore marine surveillance radar installation and methods for ensuring data quality

  4. Sandia National Laboratories: Offshore Wind Energy Simulation...

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

    Offshore Wind Energy Simulation Toolkit Sandia Vertical-Axis Wind-Turbine Research Presented at Science of Making Torque from Wind Conference On July 8, 2014, in Computational...

  5. Virginia Offshore Wind Development Authority (Virginia)

    Broader source: Energy.gov [DOE]

    The Virginia Offshore Wind Development Authority is a public body, established for the purposes of facilitating, coordinating, and supporting the development, either by the Authority or by other...

  6. Developing Integrated National Design Standards for Offshore...

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

    Certifications Signal Maturing Industry Letter from the Wind Program Director, Third Quarter 2013 edition New DOE Modeling Tool Estimates Economic Benefits of Offshore Wind Plants...

  7. Infauna Monitoring Horns Rev Offshore Wind Farm

    E-Print Network [OSTI]

    #12;Infauna Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2004 Published: 21 April-2004................................................. 48 Wind farm area (Turbine), Reference area (Ref

  8. Offshore Wind in NY State (New York)

    Broader source: Energy.gov [DOE]

    NYSERDA has expressed support for the development of offshore wind and committed funding to several publicly-available assessments that measure the potential energy benefits and environmental...

  9. Developing Integrated National Design Standards for Offshore...

    Energy Savers [EERE]

    report that summarizes the regulations, standards, and guidelines for the design and operation of offshore wind projects in the United States. In 2012, the American Wind Energy...

  10. Energy Department Announces Offshore Wind Demonstration Awardees...

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

    demonstration partnerships with broad consortia that are developing breakthrough offshore wind energy generation projects. The primary goals of these projects are to...

  11. Oregon Department of Energy Webinar: Offshore Wind

    Broader source: Energy.gov [DOE]

    The intended audience for this webinar on offshore wind basics is decision-makers, energy industry practitioners, utilities, and those knowledgeable about renewable energy. The webinar will feature...

  12. Strengthening America's Energy Security with Offshore Wind (Fact Sheet) (Revised)

    SciTech Connect (OSTI)

    Not Available

    2012-04-01T23:59:59.000Z

    This fact sheet provides a brief description of offshore wind energy development in the U.S. and DOE's Wind Program offshore wind R&D activities.

  13. Offshore Wind Jobs and Economic Development Impacts in the United...

    Energy Savers [EERE]

    the offshore wind Jobs and Economic Development Impacts (JEDI) model and provides four case studies of potential offshore wind deployment scenarios in different regions of the...

  14. Sandia Energy - Innovative Offshore Vertical-Axis Wind Turbine...

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

    Vertical-Axis Wind Turbine Rotors Home Stationary Power Energy Conversion Efficiency Wind Energy Offshore Wind Innovative Offshore Vertical-Axis Wind Turbine Rotors Innovative...

  15. arabian gulf offshore: Topics by E-print Network

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

    an easyEnvironmental impact for offshore wind farms: Geolocalized Life Cycle Assessment (LCA) approach and floating offshore wind farms. This work was undertaken within the EU-...

  16. SciTech Connect: Offshore Wind Jobs and Economic Development...

    Office of Scientific and Technical Information (OSTI)

    Technologies Office Country of Publication: United States Language: English Subject: 17 WIND ENERGY; 29 ENERGY PLANNING, POLICY AND ECONOMY OFFSHORE WIND JOBS; OFFSHORE WIND...

  17. Advanced Offshore Wind Tech: Accelerating New Opportunities for...

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

    Advanced Offshore Wind Tech: Accelerating New Opportunities for Clean Energy Advanced Offshore Wind Tech: Accelerating New Opportunities for Clean Energy May 7, 2014 - 12:11pm...

  18. WINDExchange Webinar: Economic Impacts of Offshore Wind: Market...

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

    will moderate, and the following speakers will discuss recent developments in the economics of offshore wind: Bruce Hamilton, Navigant: Offshore Wind Market Report. This...

  19. New Research Facility to Remove Hurdles to Offshore Wind and...

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

    Research Facility to Remove Hurdles to Offshore Wind and Water Power Development New Research Facility to Remove Hurdles to Offshore Wind and Water Power Development January 10,...

  20. DOE Announces Webinars on Economic Impacts of Offshore Wind,...

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

    Economic Impacts of Offshore Wind, Clean Energy Financing Programs, and More DOE Announces Webinars on Economic Impacts of Offshore Wind, Clean Energy Financing Programs, and More...

  1. DOE Announces Webinars on an Offshore Wind Economic Impacts Model...

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

    an Offshore Wind Economic Impacts Model, Resources for Tribal Energy Efficiency Projects, and More DOE Announces Webinars on an Offshore Wind Economic Impacts Model, Resources for...

  2. Assessment of Offshore Wind System Design, Safety, and Operation...

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

    Offshore Wind System Design, Safety, and Operation Standards Assessment of Offshore Wind System Design, Safety, and Operation Standards The U.S. Department of Energy's (DOE)...

  3. American Wind Energy Association Offshore WINDPOWER Conference & Exhibition

    Broader source: Energy.gov [DOE]

    AWEA Offshore WINDPOWER 2014 Conference & Exhibition is the largest offshore wind energy event in North America. The conference and exhibition will be held at the Atlantic City Convention...

  4. Assessment of Offshore Wind Energy Resources for the United States...

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

    Offshore Wind Energy Resources for the United States This report summarizes the offshore wind resource potential for the contiguous United States and Hawaii as of May 2009. The...

  5. Dynamic analysis of a 5 megawatt offshore floating wind turbine

    E-Print Network [OSTI]

    Harriger, Evan Michael

    2011-01-01T23:59:59.000Z

    Offshore wind turbines have the potential to generateuncover potential problems that exist with offshore windwind turbines in operation, this technology has the potential

  6. MELE: Maximum Entropy Leuven Estimators

    E-Print Network [OSTI]

    Paris, Quirino

    2001-01-01T23:59:59.000Z

    of the Generalized Maximum Entropy Estimator of the Generaland Douglas Miller, Maximum Entropy Econometrics, Wiley andCalifornia Davis MELE: Maximum Entropy Leuven Estimators by

  7. Maximum Parsimony and Maximum Likelihood Methods Comparisons and Bootstrap Tests

    E-Print Network [OSTI]

    Qiu, Weigang

    Maximum Parsimony and Maximum Likelihood Methods Comparisons and Bootstrap Tests Character Likelihood Methods Comparisons and Bootstrap Tests Character Reconstruction PHYLIP and T-REX Exercises Outline 1 Maximum Parsimony and Maximum Likelihood 2 Methods Comparisons and Bootstrap Tests 3 Character

  8. Jefferson Offshore | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Wind FarmJefferson City, Missouri:Offshore

  9. CT Offshore | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORT Americium/CuriumAguaBBBWind-BrizaHKC WindCT Offshore Place:

  10. Maximum Entropy Correlated Equilibria

    E-Print Network [OSTI]

    Ortiz, Luis E.

    2006-03-20T23:59:59.000Z

    We study maximum entropy correlated equilibria in (multi-player)games and provide two gradient-based algorithms that are guaranteedto converge to such equilibria. Although we do not provideconvergence rates for these ...

  11. Loads Analysis of Several Offshore Floating Wind Turbine Concepts

    SciTech Connect (OSTI)

    Robertson, A. N.; Jonkman, J. M.

    2011-10-01T23:59:59.000Z

    This paper presents a comprehensive dynamic-response analysis of six offshore floating wind turbine concepts.

  12. OFFSHORE WIND FARM LAYOUT OPTIMIZATION (OWFLO) PROJECT: AN INTRODUCTION

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    OFFSHORE WIND FARM LAYOUT OPTIMIZATION (OWFLO) PROJECT: AN INTRODUCTION C. N. Elkinton* , J. F focused on land-based wind farms, rather than on offshore farms. The conventional method used to lay out that distinguish offshore wind farms from their onshore counterparts, the Offshore Wind Farm Layout Optimization

  13. Offshore Series Wind Turbine Variable Hub heights & rotor diameters

    E-Print Network [OSTI]

    Firestone, Jeremy

    3.6MW Offshore Series Wind Turbine GE Energy #12;Feature Variable Hub heights & rotor diameters-savings feature, considering the rigors of offshore power generation. The 3.6 MW offshore wind turbine also, for both on and offshore use. Special features include... As the world's first commercially available wind

  14. ORIGINAL PAPER Review of Methodologies for Offshore Wind Resource

    E-Print Network [OSTI]

    Pryor, Sara C.

    ORIGINAL PAPER Review of Methodologies for Offshore Wind Resource Assessment in European Seas A. M installation, operation and maintenance costs associated with offshore wind parks. Successful offshore wind. Keywords Wind energy Á Offshore Á Resources assessment Á European seas Á Wind mapping Á Wind climatology Á

  15. Quantifying the hurricane risk to offshore wind turbines

    E-Print Network [OSTI]

    Jaramillo, Paulina

    Quantifying the hurricane risk to offshore wind turbines Stephen Rosea , Paulina Jaramilloa,1. Turbine tower buckling has been observed in typhoons, but no offshore wind turbines have yet been built be destroyed by hurricanes in an offshore wind farm. We apply this model to estimate the risk to offshore wind

  16. Offshore wind profile measurements from remote sensing instruments

    E-Print Network [OSTI]

    Offshore wind profile measurements from remote sensing instruments Ioannis Antoniou (1) , Hans E) have been mounted on top of a transformer platform situated offshore close to the Nysted wind farm offshore wind energy potential depends greatly on the ability to make offshore windfarms economically

  17. EA-1992: Funding for Principle Power, Inc., for the WindFloat Pacific Offshore Wind Demonstration Project, offshore of Coos Bay, Oregon

    Broader source: Energy.gov [DOE]

    Funding for Principle Power, Inc., for the WindFloat Pacific Offshore Wind Demonstration Project, offshore of Coos Bay, Oregon

  18. DOE-DOI Strategy Seeks to Harness U.S. Offshore Wind Energy Potential...

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

    offshore wind power in U.S. waters, a major step in harnessing the nation's offshore wind potential. Generating electricity from offshore wind yields multiple benefits for the...

  19. Assessing underwater noise levels during pile-driving at an offshore windfarm and its potential effects on marine mammals

    E-Print Network [OSTI]

    Aberdeen, University of

    Assessing underwater noise levels during pile-driving at an offshore windfarm and its potential of underwater noise on marine spe- cies, particularly from pile-driving for wind turbines. Environmental population of bottlenose dol- phins. We measured pile-driving noise at distances of 0.1 (maximum broadband

  20. Offshore Wind Turbines Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine Addendum 2

    SciTech Connect (OSTI)

    Aker, Pamela M.; Jones, Anthony M.; Copping, Andrea E.

    2011-03-01T23:59:59.000Z

    Additional modeling for offshore wind turbines, for proposed floating wind platforms to be deployed by University of Maine/DeepCwind.

  1. System architecture of offshore oil production systems

    E-Print Network [OSTI]

    Keller, James (James Thomas)

    2008-01-01T23:59:59.000Z

    This thesis presents an approach to applying Systems Architecture methods to the development of large, complex, commercial systems, particularly offshore oil and gas productions systems. The aim of this research was to ...

  2. Engineering Challenges for Floating Offshore Wind Turbines

    SciTech Connect (OSTI)

    Butterfield, S.; Musial, W.; Jonkman, J.; Sclavounos, P.

    2007-09-01T23:59:59.000Z

    The major objective of this paper is to survey the technical challenges that must be overcome to develop deepwater offshore wind energy technologies and to provide a framework from which the first-order economics can be assessed.

  3. Future characteristics of Offshore Support Vessels

    E-Print Network [OSTI]

    Rose, Robin Sebastian Koske

    2011-01-01T23:59:59.000Z

    The objective of this thesis is to examine trends in Offshore Support Vessel (OSV) design and determine the future characteristics of OSVs based on industry insight and supply chain models. Specifically, this thesis focuses ...

  4. Visualization of vibration experienced in offshore platforms

    E-Print Network [OSTI]

    Patrikalakis, Alexander Marinos Charles

    2010-01-01T23:59:59.000Z

    In this thesis, I design and evaluate methods to optimize the visualization of vortex-induced vibration (VIV) in marine risers. VIV is vibration experienced by marine risers in offshore drilling platforms due to ocean ...

  5. About Hercules Offshore Headquartered in Houston, Texas, Hercules Offshore serves the oil and

    E-Print Network [OSTI]

    Fisher, Kathleen

    About Hercules Offshore Headquartered in Houston, Texas, Hercules Offshore serves the oil and gas largest in the world. The company's jackup rigs, liftboats and inland barges are used for oil and gas provides shallow-water drilling and support services to the oil and gas industry. The company serves

  6. Assessing Fatigue and Ultimate Load Uncertainty in Floating Offshore Wind Turbines Due to Varying Simulation Length

    SciTech Connect (OSTI)

    Stewart, G.; Lackner, M.; Haid, L.; Matha, D.; Jonkman, J.; Robertson, A.

    2013-07-01T23:59:59.000Z

    With the push towards siting wind turbines farther offshore due to higher wind quality and less visibility, floating offshore wind turbines, which can be located in deep water, are becoming an economically attractive option. The International Electrotechnical Commission's (IEC) 61400-3 design standard covers fixed-bottom offshore wind turbines, but there are a number of new research questions that need to be answered to modify these standards so that they are applicable to floating wind turbines. One issue is the appropriate simulation length needed for floating turbines. This paper will discuss the results from a study assessing the impact of simulation length on the ultimate and fatigue loads of the structure, and will address uncertainties associated with changing the simulation length for the analyzed floating platform. Recommendations of required simulation length based on load uncertainty will be made and compared to current simulation length requirements.

  7. university-logo Maximum likelihood

    E-Print Network [OSTI]

    McCullagh, Peter

    university-logo Maximum likelihood Applications and examples REML and residual likelihood Peter McCullagh REML #12;university-logo Maximum likelihood Applications and examples JAN: Some personal remarks... IC #12;university-logo Maximum likelihood Applications and examples Outline 1 Maximum likelihood REML

  8. Federal Offshore Statistics, 1993. Leasing, exploration, production, and revenue as of December 31, 1993

    SciTech Connect (OSTI)

    Francois, D.K.

    1994-12-31T23:59:59.000Z

    This document contains statistical data on the following: federal offshore lands; offshore leasing activity and status; offshore development activity; offshore production of crude oil and natural gas; federal offshore oil and natural gas sales volume and royalties; revenue from federal offshore leases; disbursement of federal offshore revenue; reserves and resource estimates of offshore oil and natural gas; oil pollution in US and international waters; and international activities and marine minerals. A glossary is included.

  9. Lake Michigan Offshore Wind Feasibility Assessment

    SciTech Connect (OSTI)

    Boezaart, Arnold [GVSU; Edmonson, James [GVSU; Standridge, Charles [GVSU; Pervez, Nahid [GVSU; Desai, Neel [University of Michigan; Williams, Bruce [University of Delaware; Clark, Aaron [GVSU; Zeitler, David [GVSU; Kendall, Scott [GVSU; Biddanda, Bopi [GVSU; Steinman, Alan [GVSU; Klatt, Brian [Michigan State University; Gehring, J. L. [Michigan State University; Walter, K. [Michigan State University; Nordman, Erik E. [GVSU

    2014-06-30T23:59:59.000Z

    The purpose of this project was to conduct the first comprehensive offshore wind assessment over Lake Michigan and to advance the body of knowledge needed to support future commercial wind energy development on the Great Lakes. The project involved evaluation and selection of emerging wind measurement technology and the permitting, installation and operation of the first mid-lake wind assessment meteorological (MET) facilities in Michigan’s Great Lakes. In addition, the project provided the first opportunity to deploy and field test floating LIDAR and Laser Wind Sensor (LWS) technology, and important research related equipment key to the sitting and permitting of future offshore wind energy development in accordance with public participation guidelines established by the Michigan Great Lakes Wind Council (GLOW). The project created opportunities for public dialogue and community education about offshore wind resource management and continued the dialogue to foster Great Lake wind resource utilization consistent with the focus of the GLOW Council. The technology proved to be effective, affordable, mobile, and the methods of data measurement accurate. The public benefited from a substantial increase in knowledge of the wind resources over Lake Michigan and gained insights about the potential environmental impacts of offshore wind turbine placements in the future. The unique first ever hub height wind resource assessment using LWS technology over water and development of related research data along with the permitting, sitting, and deployment of the WindSentinel MET buoy has captured public attention and has helped to increase awareness of the potential of future offshore wind energy development on the Great Lakes. Specifically, this project supported the acquisition and operation of a WindSentinel (WS) MET wind assessment buoy, and associated research for 549 days over multiple years at three locations on Lake Michigan. Four research objectives were defined for the project including to: 1) test and validate floating LIDAR technology; 2) collect and access offshore wind data; 3) detect and measure bird and bat activity over Lake Michigan; 4) conduct an over water sound propagation study; 5) prepare and offer a college course on offshore energy, and; 6) collect other environmental, bathometric, and atmospheric data. Desk-top research was performed to select anchorage sites and to secure permits to deploy the buoy. The project also collected and analyzed data essential to wind industry investment decision-making including: deploying highly mobile floating equipment to gather offshore wind data; correlating offshore wind data with conventional on-shore MET tower data; and performing studies that can contribute to the advancement and deployment of offshore wind technologies. Related activities included: • Siting, permitting, and deploying an offshore floating MET facility; • Validating the accuracy of floating LWS using near shoreline cup anemometer MET instruments; • Assessment of laser pulse technology (LIDAR) capability to establish hub height measurement of wind conditions at multiple locations on Lake Michigan; • Utilizing an extended-season (9-10 month) strategy to collect hub height wind data and weather conditions on Lake Michigan; • Investigation of technology best suited for wireless data transmission from distant offshore structures; • Conducting field-validated sound propagation study for a hypothetical offshore wind farm from shoreline locations; • Identifying the presence or absence of bird and bat species near wind assessment facilities; • Identifying the presence or absence of benthic and pelagic species near wind assessment facilities; All proposed project activities were completed with the following major findings: • Floating Laser Wind Sensors are capable of high quality measurement and recordings of wind resources. The WindSentinel presented no significant operational or statistical limitations in recording wind data technology at a at a high confidence level as compared to traditional an

  10. Advanced Offshore Wind Tech: Accelerating New Opportunities for Clean Energy

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Energy Department today announced the selection of three projects that aim to advance the offshore wind industry and lower the cost of offshore wind technologies. Learn more about these technological innovations.

  11. Strengthening America's Energy Security with Offshore Wind (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-02-01T23:59:59.000Z

    This fact sheet describes the current state of the offshore wind industry in the United States and the offshore wind research and development activities conducted the U.S. Department of Energy Wind and Water Power Program.

  12. Improving Design Methods for Fixed-Foundation Offshore Wind Energy...

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

    Improving Design Methods for Fixed-Foundation Offshore Wind Energy Systems Improving Design Methods for Fixed-Foundation Offshore Wind Energy Systems October 1, 2013 - 3:10pm...

  13. Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm

    E-Print Network [OSTI]

    Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2003 #12;Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2003 Published: 14 May 2004

  14. Offshore Natural Gas Royalty Regime (Newfoundland and Labrador, Canada)

    Broader source: Energy.gov [DOE]

    The province’s offshore contains large natural gas deposits. The Provincial Government has developed an Offshore Natural Gas Royalty Regime that will ensure these resources are developed in the...

  15. New Model Demonstrates Offshore Wind Industry's Job Growth Potential...

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

    Model Demonstrates Offshore Wind Industry's Job Growth Potential New Model Demonstrates Offshore Wind Industry's Job Growth Potential May 18, 2015 - 3:11pm Addthis The U.S....

  16. Energy Department Releases New Land-Based/Offshore Wind Resource...

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

    up to 50 nautical miles from shore. It allows users to easily compare land-based with offshore wind resources. For example, it shows that the offshore wind resource of the...

  17. Study Finds 54 Gigawatts of Offshore Wind Capacity Technically...

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

    According to a new study funded by DOE, the United States has sufficient offshore wind energy resources to legitimize the installation of at least 54 gigawatts (GW) of offshore...

  18. Energy and Interior Departments Host Offshore Energy Knowledge...

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

    Related Articles DOE to Host a Booth at Offshore WINDPOWER Wind Program Newsletter: Second Quarter 2012 DOE-DOI Strategy Seeks to Harness U.S. Offshore Wind Energy Potential...

  19. Offshore Renewable Energy R&D (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-04-01T23:59:59.000Z

    This fact sheet describes the offshore renewable energy R and D efforts at the National Renewable Energy Laboratory.

  20. NREL Assesses National Design Standards for Offshore Wind (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-06-01T23:59:59.000Z

    Report summarizes regulations, standards, and guidelines for the design and operation of offshore wind projects in the United States.

  1. 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

  2. Quantifying Offshore Wind Resources from Satellite Wind Maps

    E-Print Network [OSTI]

    Pryor, Sara C.

    the spatial extent of the wake behind large offshore wind farms. Copyright © 2006 John Wiley & Sons, LtdQuantifying Offshore Wind Resources from Satellite Wind Maps: Study Area the North Sea C. B National Laboratory, Roskilde, Denmark Offshore wind resources are quantified from satellite synthetic

  3. Hydroacoustic Monitoring of Fish Communities in Offshore Wind Farms

    E-Print Network [OSTI]

    #12;Hydroacoustic Monitoring of Fish Communities in Offshore Wind Farms Annual Report 2004 Horns Rev Offshore Wind Farm Published: May 2005 Prepared by: Christian B. Hvidt Lars Brünner Frank Reier farms Horns Rev Offshore Wind Farm 2004 2519-03-003-rev3.doc TABLE OF CONTENTS PAGE 1. Introduction

  4. Ris-R-1298(EN) Validation of Satellite SAR Offshore

    E-Print Network [OSTI]

    resources, e.g. in future planning of offshore wind farms. The report describes the validation analysisRisø-R-1298(EN) Validation of Satellite SAR Offshore Wind Speed Maps to In-Situ Data, Microscale project goal is to develop a method for utilizing the satellite wind speed maps for offshore wind

  5. REVIEW Open Access Assessing environmental impacts of offshore wind

    E-Print Network [OSTI]

    Aberdeen, University of

    REVIEW Open Access Assessing environmental impacts of offshore wind farms: lessons learned offshore wind farm, Horns Rev 1 (160 MW with 80 turbines of 2 MW), became operational in 2002. The aver- age capacity of turbines and size of offshore wind farms have been increasing since then

  6. Offshore Wind Farm Layout Optimization (OWFLO) Project: Preliminary Results

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Offshore Wind Farm Layout Optimization (OWFLO) Project: Preliminary Results Christopher N. Elkinton the layout of an offshore wind farm presents a significant engineering challenge. Most of the optimization literature to date has focused on land-based wind farms, rather than on offshore farms. Typically, energy

  7. Using satellite data for mapping offshore wind resources and wakes

    E-Print Network [OSTI]

    (no wind) Horns Rev Offshore Wind Farm Blaavandshuk Met. mast N #12;Wind Horns Rev Wind speed map from · Wake near large offshore wind farms is quantified in space and time · Software for usersUsing satellite data for mapping offshore wind resources and wakes Charlotte Bay Hasager, Merete

  8. Ris-R-1407(EN) Efficient Development of Offshore

    E-Print Network [OSTI]

    leading to improved prediction of wind speed and turbu- lence profiles within large offshore wind farms. Use of new databases from existing offshore wind farms and detailed wake profiles collected using to optimise power output from offshore wind farms through minimised wake effects and optimal grid connections

  9. Challenges in Predicting Power Output from Offshore Wind Farms

    E-Print Network [OSTI]

    Pryor, Sara C.

    Challenges in Predicting Power Output from Offshore Wind Farms R. J. Barthelmie1 and S. C. Pryor2 Abstract: Offshore wind energy is developing rapidly in Europe and the trend is towards large wind farms an offshore wind farm, accurate assessment of the wind resource/power output from the wind farm is a necessity

  10. Review report 2004 The Danish Offshore Wind Farm

    E-Print Network [OSTI]

    - 1 - Review report 2004 The Danish Offshore Wind Farm Demonstration Project: Horns Rev and Nysted Offshore Wind Farms Environmental impact assessment and monitoring Prepared for The Environmental Group By Elsam Engineering and ENERGI E2 October 2005 #12;- 2 - Review Report 2004 The Danish Offshore Wind Farm

  11. Offshore Wind Power Experiences, Potential and Key Issues for

    E-Print Network [OSTI]

    offshore wind farms are installed in British, Swedish and Danish waters, and present-day costs in 2015, 2030 and 2050 14 3.1 Offshore wind farms under construction and in planning stage 14 3Offshore Wind Power Experiences, Potential and Key Issues for Deployment Jørgen Lemming, Poul Erik

  12. Assessing Novel Foundation Options for Offshore Wind Turbines

    E-Print Network [OSTI]

    Byrne, Byron

    Assessing Novel Foundation Options for Offshore Wind Turbines B.W. Byrne, BE(Hons), BCom, MA, DPhil G.T. Houlsby, MA, DSc, FREng, FICE Oxford University, UK SYNOPSIS Offshore wind farms, and of these wind power is the only one to be exploited on a commercial scale at present. Three major offshore

  13. ForPeerReview PUBLIC ACCEPTANCE OF OFFSHORE WIND POWER

    E-Print Network [OSTI]

    Firestone, Jeremy

    ForPeerReview PUBLIC ACCEPTANCE OF OFFSHORE WIND POWER PROJECTS IN THE UNITED STATES Journal: Wind, Andrew; Minerals Management Service Keywords: offshore wind power, public opinion, social acceptancePeerReview 1 PUBLIC ACCEPTANCE OF OFFSHORE WIND POWER PROJECTS IN THE UNITED STATES Jeremy Firestone*, Willett

  14. FEED-IN TARIFFS AND OFFSHORE WIND POWER DEVELOPMENT

    E-Print Network [OSTI]

    Firestone, Jeremy

    FEED-IN TARIFFS AND OFFSHORE WIND POWER DEVELOPMENT Prepared by Jon Lilley, Blaise Sheridan, Dawn.......................................................................................................................... 25 FERC Clarification as Applied to Offshore Wind........................................................................................................................ 28 #12; 3 Feed-in Tariffs and Offshore Wind Power Development Prepared Pursuant to DOE Grant Em

  15. Wave Models for Offshore Wind Turbines Puneet Agarwal

    E-Print Network [OSTI]

    Manuel, Lance

    Wave Models for Offshore Wind Turbines Puneet Agarwal§ and Lance Manuely Department of Civil. These wave modeling assumptions do not adequately represent waves in shallow waters where most offshore wind for estimating loads on the support structure (monopile) of an offshore wind turbine. We use a 5MW utility

  16. Extreme Loads for an Offshore Wind Turbine using Statistical

    E-Print Network [OSTI]

    Manuel, Lance

    Extreme Loads for an Offshore Wind Turbine using Statistical Extrapolation from Limited Field Data,itiscommontoeithercarry out extensive simulation studies or undertake a field measurement campaign. At the Blyth offshore wind here is to estimate extreme loads for an offshore wind turbine for which the environmental and load

  17. Floating Offshore Wind Technology Generating Resources Advisory Committee

    E-Print Network [OSTI]

    Floating Offshore Wind Technology Jeff King Generating Resources Advisory Committee May 28, 2014 1 to site) Potential interconnection to future offshore PNWCA intertie 4 #12;5 Ave wind speed >= 10 m. (2010) Large-scale Offshore Wind Power in the United States National Renewable Energy Laboratory. (2012

  18. Electric power from offshore wind via synoptic-scale interconnection

    E-Print Network [OSTI]

    Firestone, Jeremy

    Electric power from offshore wind via synoptic-scale interconnection Willett Kemptona,1 , Felipe M regional estimate, Kempton et al. (2) calculated that two-thirds of the offshore wind power off the U in the U.S. Atlantic region is already underway. Fig. 1 shows as black squares offshore wind developments

  19. Ris National Laboratory Satellite SAR applied in offshore wind

    E-Print Network [OSTI]

    Risø National Laboratory Satellite SAR applied in offshore wind ressource mapping: possibilities is to quantify the regional offshore wind climate for wind energy application based on satellite SAR ·Study of 85SAR(m/s) Hasager, Dellwik, Nielsen and Furevik, 2004, Validation of ERS-2 SAR offshore wind-speed maps

  20. OFFSHORE BOUNDARY-LAYER MODELLING H. Bergstrm1

    E-Print Network [OSTI]

    currently be incorporated into a wind farm design tool. The offshore thermal stratification climate is also investigated. 1 INTRODUCTION Mapping the offshore wind climate, it is important to take into account both land contribute to a complex wind field, and affect the wind also at large offshore distances. Spatial variations

  1. Powering the World: Offshore Oil & Gas Production

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    Gulf of Mexico's oil and gas production Conclusions ­ p.5/59 #12;Summary of Conclusions. . . The globalPowering the World: Offshore Oil & Gas Production Macondo post-blowout operations Tad Patzek that it may be on call for a further ordering." Technology is a "standing-reserve" of energy for humans

  2. Unique wellhead solves offshore cementing problems

    SciTech Connect (OSTI)

    Not Available

    1985-02-01T23:59:59.000Z

    A special subsea wellhead assembly that allows 2stage cementing (from both top and bottom) in weak, unconsolidated seabed sediments has been used successfully from a semi-submersible rig offshore Malta. Presented here is a description of the system and a discussion of operational considerations used to set and cement 20 and 16-in. surface casing strings.

  3. Research on the mitigation of explosions on offshore oil and gas platforms

    SciTech Connect (OSTI)

    Johnson, D.M.; Shale, G.A. [British Gas plc, Loughborough (United Kingdom). Research and Technology Div.

    1995-12-31T23:59:59.000Z

    The combination of congestion, and confinement is characteristic of many offshore oil and gas platforms in the UK and Norwegian sectors of the North Sea. These conditions can result in severe explosion overpressures following the ignition of an accidental release of gas. The consequences of such an incident were illustrated by the Piper Alpha disaster in which an explosion initiated a sequence of events which rapidly lead to total destruction of the platform and the loss of 167 lives. A number of techniques can be considered for the control and mitigation of explosions on offshore platforms, including explosion relief, blast containment, explosion suppression, changes to platform layout and platform strengthening. These techniques are reviewed in the paper. However, many of them are difficult and expensive to implement on existing structures and, their use, even within new installations has limitations. Most offshore platforms are fitted with deluge systems for protection against fire. Recent research has shown that, under certain conditions, the water spray generated by a fire deluge system, typical of those currently installed on offshore platforms, can provide effective explosion mitigation. The paper describes the large-scale experimental research which has been carried out, and indicates the mechanisms by which water spray mitigates a gas explosion.

  4. Monthly Number of Days for Maximum Temperature - Hanford Site

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTIONES2008-54174 ThisBackground The EnergyS F J u

  5. The wind speed profile at offshore wind farm sites Bernhard Lange(1)

    E-Print Network [OSTI]

    Heinemann, Detlev

    The wind speed profile at offshore wind farm sites Bernhard Lange(1) , Søren E. Larsen(2) , Jørgen in Europe will come from offshore sites. The first large offshore wind farms are #12;currently being built feasibility of offshore wind power utilisation depends on the favourable wind conditions offshore compared

  6. Achieve maximum application availability and

    E-Print Network [OSTI]

    Bernstein, Phil

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

  7. The geotechnical centrifuge in offshore engineering

    SciTech Connect (OSTI)

    Murff, J.D.

    1996-12-31T23:59:59.000Z

    One of the greatest needs in offshore geotechnical engineering is for large scale test measurements on which to calibrate design procedures. The geotechnical centrifuge offers at least a partial remedy. Because it allows one to properly simulate stresses, it is a legitimate, relatively inexpensive option to full scale field testing. As such it is a valuable technique and can be an excellent complement to laboratory tests, 1-g model tests and numerical analyses. However, it has not been widely used by industry even though the capability has existed for almost thirty years. This paper argues that this technology should gain acceptance beyond the research community. The paper presents an overview of centrifuge principles, philosophies of use, and limitations of the technique. For illustration, several actual applications of centrifuge testing for complex offshore problems are described. Results are shown to provide important insights into prototype behavior and to agree well with full scale measurements where these are available.

  8. Articles about Offshore Wind | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergyDepartment ofATVMAgriculturalAn1(BENEFIT)GridOffshore Wind

  9. Wind/Wave Misalignment in the Loads Analysis of a Floating Offshore Wind Turbine: Preprint

    SciTech Connect (OSTI)

    Barj, L.; Stewart, S.; Stewart, G.; Lackner, M.; Jonkman, J.; Robertson, A.

    2014-02-01T23:59:59.000Z

    Wind resources far from the shore and in deeper seas have encouraged the offshore wind industry to look into floating platforms. The International Electrotechnical Commission (IEC) is developing a new technical specification for the design of floating offshore wind turbines that extends existing design standards for land-based and fixed-bottom offshore wind turbines. The work summarized in this paper supports the development of best practices and simulation requirements in the loads analysis of floating offshore wind turbines by examining the impact of wind/wave misalignment on the system loads under normal operation. Simulations of the OC3-Hywind floating offshore wind turbine system under a wide range of wind speeds, significant wave heights, peak-spectral periods and wind/wave misalignments have been carried out with the aero-servo-hydro-elastic tool FAST [4]. The extreme and fatigue loads have been calculated for all the simulations. The extreme and fatigue loading as a function of wind/wave misalignment have been represented as load roses and a directional binning sensitivity study has been carried out. This study focused on identifying the number and type of wind/wave misalignment simulations needed to accurately capture the extreme and fatigue loads of the system in all possible metocean conditions considered, and for a down-selected set identified as the generic US East Coast site. For this axisymmetric platform, perpendicular wind and waves play an important role in the support structure and including these cases in the design loads analysis can improve the estimation of extreme and fatigue loads. However, most structural locations see their highest extreme and fatigue loads with aligned wind and waves. These results are specific to the spar type platform, but it is expected that the results presented here will be similar to other floating platforms.

  10. Horns Rev Offshore Wind Farm Environmental Impact Assessment

    E-Print Network [OSTI]

    Horns Rev Offshore Wind Farm Environmental Impact Assessment of Sea Bottom and Marine Biology #12 Design ApS 01.03.2000 #12;Bio/consult A/S Horns Rev. Offshore Wind Farm Doc. No. 1680-1-02-03-003 rev. 1........................................................................................................................................................... 36 #12;Bio/consult A/S ELSAM Horns Rev. Offshore Wind Farm Doc. No. 1680-1-02-03-003 rev. 1 Page 4

  11. Support for Offshore Oil and Gas Drilling among the California Public

    E-Print Network [OSTI]

    Smith, Eric R.A.N.

    2003-01-01T23:59:59.000Z

    005 "Support for Offshore Oil and Gas Drilling Among theSupport for Offshore Oil and Gas Drilling among theSupport for Offshore Oil and Gas Drilling among the

  12. UNDERLYING MOTIVATIONS FOR DELAWARE PUBLIC PARTICIPATION IN SUPPORT OF OFFSHORE WIND

    E-Print Network [OSTI]

    Firestone, Jeremy

    UNDERLYING MOTIVATIONS FOR DELAWARE PUBLIC PARTICIPATION IN SUPPORT OF OFFSHORE WIND: IMPLICATIONS PARTICIPATION IN SUPPORT OF OFFSHORE WIND: IMPLICATIONS FOR STATE ENERGY POLICY by Jacqueline D Piero Approved ................................................................................................. 3 Offshore wind: a new option in the United States.............................................. 4

  13. Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines

    E-Print Network [OSTI]

    Victoria, University of

    Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines by Matthew Thomas Mooring Line Modelling and Design Optimization of Floating Offshore Wind Turbines by Matthew Thomas Jair. Curran Crawford, Supervisor (Department of Mechanical Engineering) ABSTRACT Floating offshore wind

  14. Microalgae Cultivation using Offshore Membrane Enclosures for Growing Algae (OMEGA)

    E-Print Network [OSTI]

    Wiley, Patrick Edward

    2013-01-01T23:59:59.000Z

    and J. Trent (2013). Microalgae cultivation using offshoreJ. Trent, Harvesting Microalgae by Forward Osmosis. The Open5, 1943 (2012). E. W. Becker, Microalgae: Biotechnology and

  15. Offshore Resource Assessment and Design Conditions Public Meeting...

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

    Resource Assessment and Design Conditions Public Meeting Summary Report Offshore Resource Assessment and Design Conditions Public Meeting Summary Report Report from DOE's June 2011...

  16. annual offshore technology: Topics by E-print Network

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

    and Utilization Websites Summary: Renewable Energy Center California Off-shore Wind Technology Assessment 12;California Renewable EnergyRESEARCH RESULTS FORUM FOR RENEWABLE...

  17. Operational Impacts of Large Deployments of Offshore Wind (Poster)

    SciTech Connect (OSTI)

    Ibanez, E.; Heaney, M.

    2014-10-01T23:59:59.000Z

    The potential operational impact of deploying 54 GW of offshore wind in the United States was examined. The capacity was not evenly distributed; instead, it was concentrated in regions with better wind quality and close to load centers (Table 1). A statistical analysis of offshore wind power time series was used to assess the effect on the power system. The behavior of offshore wind resembled that of onshore wind, despite the former presenting higher capacity factors, more consistent power output across seasons, and higher variability levels. Thus, methods developed to manage onshore wind variability can be extended and applied to offshore wind.

  18. Sandia Energy - Quantifying Offshore Wind Scour with Sandia's...

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

    Sandia's Environmental Fluid Dynamics Code (SNL---EFDC) Home Renewable Energy Energy News Wind Energy News & Events Computational Modeling & Simulation Quantifying Offshore Wind...

  19. EA-1970: Fishermen's Energy LLC Offshore Wind Demonstration Project...

    Office of Environmental Management (EM)

    to Fishermen's Atlantic City Windfarm, LLC to construct and operate up to six wind turbine generators, for an offshore wind demonstration project, approximately 2.8 nautical...

  20. Ecological Issues Related to Decommissioning of California's Offshore Production Platforms

    E-Print Network [OSTI]

    Carr, Mark H.

    Ecological Issues Related to Decommissioning of California's Offshore Production Platforms Report................................................................................................................ 8 II.A. Review of California platforms............................................................................. 8 II.A.i Geography of California platforms

  1. EA-1792: University of Maine's Deepwater Offshore Floating Wind...

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

    This EA evaluates the environmental impacts of a proposal to support research on floating offshore wind turbine platforms. This project would support the mission, vision, and goals...

  2. New Model Demonstrates Offshore Wind Industry's Job Growth Potential...

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

    has developed a tool to estimate jobs and other economic impacts associated with offshore wind development in the United States. The modeling tool, which illustrates the potential...

  3. University of Michigan Gets Offshore Wind Ready for Winter on...

    Energy Savers [EERE]

    Receive Energy Department Funding United States Launches First Grid-Connected Offshore Wind Turbine Mitigating Potential Environmental Impacts of Energy Development Project...

  4. New Report Highlights Trends in Offshore Wind with 14 Projects...

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

    the advanced stages of development- together representing nearly 4,900 megawatts (MW) of potential offshore wind energy capacity for the United States. Further, this year's report...

  5. Obama Administration Hosts Great Lakes Offshore Wind Workshop...

    Office of Environmental Management (EM)

    wind development in the Great Lakes closer to fruition." "The country's vast offshore wind resources have the potential to dramatically reduce America's dependence on fossil...

  6. New DOE Modeling Tool Estimates Economic Benefits of Offshore...

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

    renewable power plants. The updated version allows users to better understand the potential regional economic impacts of offshore wind development. DOE is using the new...

  7. DOE Announces Webinars on Economic Impacts of Offshore Wind,...

    Energy Savers [EERE]

    systems cost. Suzanne Tegen, National Renewable Energy Laboratory (NREL): Offshore Wind Jobs and Economic Development Impact: Four Regional Scenarios. This presentation...

  8. PNNL Reviews Wildlife-Interaction Monitoring for Offshore Wind...

    Energy Savers [EERE]

    monitoring birds, bats, and aquatic animals such as marine mammals, sea turtles, and fish in the offshore wind farm environment. Informed by monitoring results and research...

  9. Ben Ticha M. B., Ranchin T., Wald L., Using several data sources for offshore wind resource assessment, 2005, Copenhagen Offshore Wind conference 2005

    E-Print Network [OSTI]

    Boyer, Edmond

    financial risks associated to the installation of offshore wind farms. Usually, for evaluating the resourceBen Ticha M. B., Ranchin T., Wald L., Using several data sources for offshore wind resource assessment, 2005, Copenhagen Offshore Wind conference 2005 1 Using several data sources for offshore wind

  10. Offshore Code Comparison Collaboration (OC3) for IEA Wind Task 23 Offshore Wind Technology and Deployment

    SciTech Connect (OSTI)

    Jonkman, J.; Musial, W.

    2010-12-01T23:59:59.000Z

    This final report for IEA Wind Task 23, Offshore Wind Energy Technology and Deployment, is made up of two separate reports, Subtask 1: Experience with Critical Deployment Issues and Subtask 2: Offshore Code Comparison Collaborative (OC3). Subtask 1 discusses ecological issues and regulation, electrical system integration, external conditions, and key conclusions for Subtask 1. Subtask 2 included here, is the larger of the two volumes and contains five chapters that cover background information and objectives of Subtask 2 and results from each of the four phases of the project.

  11. Original article Restricted maximum likelihood

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Original article Restricted maximum likelihood estimation of covariances in sparse linear models on the simplex algorithm of Nelder and Mead [40]. Kovac [29] made modifications that turned it into a stable

  12. FOUR ESSAYS ON OFFSHORE WIND POWER POTENTIAL, DEVELOPMENT, REGULATORY FRAMEWORK, AND INTEGRATION

    E-Print Network [OSTI]

    Firestone, Jeremy

    FOUR ESSAYS ON OFFSHORE WIND POWER POTENTIAL, DEVELOPMENT, REGULATORY FRAMEWORK, AND INTEGRATION 2010 Amardeep Dhanju All Rights Reserved #12;FOUR ESSAYS ON OFFSHORE WIND POWER POTENTIAL, DEVELOPMENT

  13. NREL GIS Data: U.S. Atlantic Coast Offshore Windspeed 90m Height...

    Open Energy Info (EERE)

    offshore regions of the United States. To learn more, please see the Assessment of Offshore Wind Energy Resources for the United States. These data were produced in...

  14. Offshore Wind Turbines - Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine: Environmental Effects of Offshore Wind Energy Development

    SciTech Connect (OSTI)

    Aker, Pamela M.; Jones, Anthony M.; Copping, Andrea E.

    2010-11-23T23:59:59.000Z

    Deep C Wind, a consortium headed by the University of Maine will test the first U.S. offshore wind platforms in 2012. In advance of final siting and permitting of the test turbines off Monhegan Island, residents of the island off Maine require reassurance that the noise levels from the test turbines will not disturb them. Pacific Northwest National Laboratory, at the request of the University of Maine, and with the support of the U.S. Department of Energy Wind Program, modeled the acoustic output of the planned test turbines.

  15. EA-1970: Fishermen’s Energy LLC Offshore Wind Demonstration Project, offshore Atlantic City, New Jersey

    Broader source: Energy.gov [DOE]

    DOE is proposing to provide funding to Fishermen’s Atlantic City Windfarm, LLC to construct and operate up to six wind turbine generators, for an offshore wind demonstration project, approximately 2.8 nautical miles off the coast of Atlantic City, NJ. The proposed action includes a cable crossing from the turbines to an on-shore existing substation.

  16. Optimizing safety by inherent offshore platform design

    SciTech Connect (OSTI)

    Mansfield, D.P. [AEA Technology, Risley (United Kingdom); Kletz, T.A. [Kletz (T.A.), Cheadle (United Kingdom); Al-Hassan, T. [HSE Offshore Safety Div., Bootle (United Kingdom)

    1996-12-31T23:59:59.000Z

    Following the Cullen Report into the Piper Alpha Disaster, UK Operators and the Health and Safety Executive Offshore Safety Division (OSD) have been working together to bring in a new safety regime, progressively replacing prescriptive requirements with goal setting regulations to enable a more integrated approach to hazard management. This is allowing the industry to be more flexible and specific about the way it manages hazards throughout the life of the installation. In particular it is encouraging a hazards based focus to design which is changing the way installations are designed and which would promote the use of inherently safer design. Conventional installation design often relies on standard specification engineered safety systems such as shutdown systems and water deluge to control hazards, with less attention paid to minimizing the hazards at source. These add-on safety systems can be expensive to install and maintain, and may only be effective in some circumstances. This paper reports on a pilot study sponsored by OSD, involving offshore operators and design contractors, to assess the status of inherent safety in offshore installation design in the UK and to encourage its further use spreading best practice and examples of the benefits of the approach. The paper outlines the key considerations for implementation of inherently safer design, and describes some of the benefits these can bring to the industry. It also highlights the role regulations, industry initiatives and guidance can play in promoting inherently safer design both now and in the future. The study`s findings suggest that awareness of the inherent safety principles is limited to some safety specialists and designers, but that the industry is beginning to recognize the role and benefits of inherent safety. As a result its principles are starting to appear in some design procedures and hazard management guides.

  17. Multistage Stochastic Programming Approach for Offshore Oilfield Infrastructure Planning

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    Multistage Stochastic Programming Approach for Offshore Oilfield Infrastructure Planning under is implemented in the GAMS grid computing environment. Computational results on a variety of oilfield development cycle of a typical offshore oilfield project consists of the following five steps: (1) Exploration

  18. Offshore Oilfield Development Planning under Uncertainty and Fiscal Considerations

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    1 Offshore Oilfield Development Planning under Uncertainty and Fiscal Considerations Vijay Gupta1 of oilfields in remote locations that are often hundreds of miles offshore. Surprisingly, there has been a net by the terms of the contract between oil companies and governments. Figure 1: A unified framework for Oilfield

  19. Numerical Simulation of Wave Loads on Static Offshore Structures

    E-Print Network [OSTI]

    of Wave Loads on Static Offshore Structures ­ p. #12;VOF Free Surface Flow Model Modelling of Free Surface-cell resolution of prescribed wave forms in relaxation zones · Support for dynamic mesh with 6-DOF solver meshNumerical Simulation of Wave Loads on Static Offshore Structures Hrvoje Jasak, Inno Gatin, Vuko

  20. Riser and wellhead monitoring for improved offshore drilling operations

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    Riser and wellhead monitoring for improved offshore drilling operations Gullik A. Jensen, Ph ­ Offshore drilling with riser ­ On the riser and the riser joints ­ On damage and consequences · Operational Page 2 #12;The KONGSBERG Riser Management Systems (RMS) Integrity of drilling riser based on monitoring

  1. Ab Frhjahr 2009 startet hier der Bau von sechs Offshore-

    E-Print Network [OSTI]

    Vollmer, Heribert

    Ent- wicklung der Offshore-Wind- energie besondere Bedeutung zu. Derzeit laufen in der AusAb Frühjahr 2009 startet hier der Bau von sechs Offshore- Windenergieanlagen (OWEA) vom Typ Wind- parks sind etwa die Erweite- rung des Pilotprojektes alpha ventus, der Park Borkum West (45

  2. Visual Simulation of Offshore Liquefied Natural Gas (LNG) Terminals

    E-Print Network [OSTI]

    Standiford, Richard B.

    Visual Simulation of Offshore Liquefied Natural Gas (LNG) Terminals in a Decision-Making Context1 potential offshore Liquified Natural Gas (LNG) sites and the types of terminals that might occupy those sites. The study had to evaluate the engineering feasibility of siting an LNG receiving terminal

  3. Integrated Multidisciplinary Constrained Optimization of Offshore Support Structures

    E-Print Network [OSTI]

    Papalambros, Panos

    and convergence rate. This integrated methodology is used to redesign an existing SWT-3.6-107 wind turbine support.haghi@siemens.com Abstract. In the current offshore wind turbine support structure design method, the tower and foundation of the structure. To show the usefulness of the method, an existing SWT-3.6-107 offshore wind turbine where its

  4. DISTRIBUTED OPTIMIZATION AND CONTROL OF OFFSHORE OIL PRODUCTION: THE INTELLIGENT

    E-Print Network [OSTI]

    Foss, Bjarne A.

    DISTRIBUTED OPTIMIZATION AND CONTROL OF OFFSHORE OIL PRODUCTION: THE INTELLIGENT PLATFORM Michael R to distributed optimization and control of offshore oil production systems. The model incorporates a complex pipeline network. Oil and gas production systems are represented as a network of connected hierarchical

  5. Taming Hurricanes With Arrays of Offshore Wind Turbines

    E-Print Network [OSTI]

    Firestone, Jeremy

    Taming Hurricanes With Arrays of Offshore Wind Turbines Mark Z. Jacobson Cristina Archer, Willet) or 50 m/s (destruction) speed. Can Walls of Offshore Wind Turbines Dissipate Hurricanes? #12;Katrina Kempton Wind Energy Symposium University of Delaware February 27, 2013 145 mph; Jeff Schmaltz, NASA GSFC

  6. RELIABILITY COMPARISON MODELS FOR OFFSHORE WIND TURBINES (OWT)

    E-Print Network [OSTI]

    Bernstein, Joseph B.

    RELIABILITY COMPARISON MODELS FOR OFFSHORE WIND TURBINES (OWT) Yizhou Lu, T. M. Delorm, A. Christou of survivor functions R(t) of drive-trains, after 1 year of operation, between Offshore Wind Turbine (OWT) vs of the reliability of these 5 Types Surrogate failure rate data Onshore wind turbines (OT) 1-1.5MW CONCLUSIONS

  7. Improvement of Offshore Wind Resource Modeling in the Mid-

    E-Print Network [OSTI]

    Firestone, Jeremy

    Improvement of Offshore Wind Resource Modeling in the Mid- Atlantic Bight Wind Energy Symposium Sienkiewicz , Chris Hughes 26 February 2013 #12;Improving Atmospheric Models for Offshore Wind Resource Interaction Tower ­ 23 m NOAA Buzzard's Bay Tower ­ 25 m Cape Wind Tower (60 m from 2003-2011; just platform

  8. Cathodic protection retrofit of an offshore pipeline

    SciTech Connect (OSTI)

    Winters, R.H.; Holk, A.C. [Tenneco Energy, Houston, TX (United States)

    1997-09-01T23:59:59.000Z

    The cathodic protection anodes and corrosion coating on two 8-inch (203.2 mm) outside diameter (O.D.) offshore pipelines were damaged during deep water ({minus}380 feet, {minus}116 m) installation. In-situ methods for deep water inspection and repair of the pipelines` cathodic protection and coating systems were developed and performed. Methods are described in which underwater anode retrofits were performed and friction welding technology was used to re-attach anode leads. Standard procedures for underwater pipeline coating repair and remediation of damaged line pipe are provided.

  9. Cathodic protection retrofit of an offshore pipeline

    SciTech Connect (OSTI)

    Winters, R.H.; Holk, A.C. [Tenneco Energy, Houston, TX (United States)

    1997-09-01T23:59:59.000Z

    Cathodic protection (CP) anodes and corrosion coating on two offshore pipelines were damaged during deep water installation. In-situ methods for deep-water inspection and repair of the pipelines` CP and coating systems were developed and used. High-pressure natural gas Pipeline. A design was 5.6 miles of 8.625 in. OD by 0.406 in. W.T. API SL, Grade X-42, seamless line pipe. Pipeline B design was 0.3 miles of similar specification pipe. Both pipelines were mill-coated with 14 mil of fusion-bonded epoxy (FBE) corrosion coating. Girth welds were field-coated with FBE.

  10. Offshore Wind Projects | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM PolicyOf EnvironmentalGuide, JulyIssueOffshore Wind Projects

  11. Scira Offshore 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCalifornia Sector: WindRiegotec InternacionalhasASScira Offshore

  12. Offshore Lubricants Market | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns JumpsourceOffshore Lubricants Market Size Home

  13. Capital Energy Offshore | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergy Offshore Place: Spain Sector: Wind energy Product: JV

  14. Norfolk Offshore Wind NOW | Open Energy Information

    Open Energy Info (EERE)

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

  15. Offshore Wind Energy | OpenEI Community

    Open Energy Info (EERE)

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

  16. Offshore Wind Power | Open Energy Information

    Open Energy Info (EERE)

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

  17. Tillamook Offshore Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f <MaintainedInformationThePty Ltd Jump to:Offshore Wind Farm Jump

  18. European Wind Atlas: Offshore | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489 No revision|LLCInsulationInformation)CommissionOffshore Jump

  19. Copyright 1999, Offshore Technology Conference This paper was prepared for presentation at the 1999 Offshore Technology Conference held in

    E-Print Network [OSTI]

    Byrne, Byron

    to explore plasticity related concepts. The tests are on dry sand to ensure drained behaviour. Eight testsCopyright 1999, Offshore Technology Conference This paper was prepared for presentation at the 1999 Offshore Technology Conference held in Houston, Texas, 3­6 May 1999. This paper was selected

  20. Oxford University Civil Engineering Novel Foundations for Offshore Wind FarmsNovel Foundations for Offshore Wind Farms

    E-Print Network [OSTI]

    Houlsby, Guy T.

    Oxford University Civil Engineering Novel Foundations for Offshore Wind FarmsNovel Foundations for Offshore Wind Farms Prof. Guy Houlsby, Dr Byron Byrne, Dr Chris Martin Oxford University #12;Oxford each turbine does not generate all the time, say 3000) #12;Oxford University Civil Engineering Wind

  1. EA-1985: Virginia Offshore Wind Technology Advancement Project (VOWTAP), 24 nautical miles offshore of Virginia Beach, Virginia

    Broader source: Energy.gov [DOE]

    DOE is proposing to fund Virginia Electric and Power Company's Virginia Offshore Wind Technology Advancement Project (VOWTAP). The proposed VOWTAP project consists of design, construction and operation of a 12 megawatt offshore wind facility located approximately 24 nautical miles off the coast of Virginia Beach, VA on the Outer Continental Shelf.

  2. New Facility to Shed Light on Offshore Wind Resource (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-05-01T23:59:59.000Z

    Chesapeake Light Tower facility will gather key data for unlocking the nation's vast offshore wind resource.

  3. ENDOW: EfficieNt Development of Offshore Windfarms Rebecca Barthelmie1

    E-Print Network [OSTI]

    Heinemann, Detlev

    offshore wind farms. Use of new databases from existing offshore wind farms and detailed wake profiles manufacturers to optimise power output from offshore wind farms through minimised wake effects and optimal grid from two offshore wind farms at which both meteorological observations and power output were available

  4. EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES

    E-Print Network [OSTI]

    Heinemann, Detlev

    will come from offshore sites. The first large offshore wind farms are currently being built in severalEVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES important for offshore wind energy utilisation are discussed and tested: Four models for the surface

  5. Method for computing efficient electrical indicators for offshore wind turbine monitoring

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    by offshore deployment of wind farms. The offshore turbines have much lower accessibility(1) so maintenanceMethod for computing efficient electrical indicators for offshore wind turbine monitoring Georgia.cablea, pierre.granjon, christophe.berenguer} @gipsa-lab.grenoble-inp.fr Abstract Offshore wind turbines

  6. MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND FARM SITES

    E-Print Network [OSTI]

    Heinemann, Detlev

    in Europe will come from offshore sites. The first large offshore wind farms are currently being builtMODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND for conditions important for offshore wind energy utilisation are compared and tested: Four models

  7. Where is the ideal location for a US East Coast offshore grid? Michael J. Dvorak,1

    E-Print Network [OSTI]

    weather model data from 2006­2010 were used to approximate wind farm output. The offshore grid was located%, and the combined capacity factor was 48% (gross). By interconnecting offshore wind energy farms 450 km apart of no and full-power events. Offshore grids to connect offshore wind energy (OWE) farms have been proposed

  8. Fluctuations of offshore wind generation -Statistical modelling , L.E.A. Christensen, H. Madsen

    E-Print Network [OSTI]

    of power fluctuations at large offshore wind farms has a significant impact on the control and management of their parameters. Simulation results are given for the case of the Horns Rev and Nysted offshore wind farms. An overview of offshore wind energy in Europe is given in [1]. Such large offshore wind farms concentrate

  9. Offshore Wind Power: Science, engineering, and policy MAST 628-010, Fall 2008

    E-Print Network [OSTI]

    Firestone, Jeremy

    Offshore Wind Power: Science, engineering, and policy MAST 628-010, Fall 2008 Revised 10 October@udel.edu Class web site with lecture notes: www.udel.edu/sakai UD offshore wind research: http, plan, regulate, and develop offshore wind resources for large-scale power production. Offshore wind

  10. Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with Emphasis of offshore wind turbines Defense: 09.12.2012 2012 - : Structural Engineer in Det Norske Veritas (DNV) 2007 and higher wind speed, and less visual disturbance and noise for offshore wind energy. Offshore wind

  11. Mid-year report. [Review of offshore petroleum industry activity

    SciTech Connect (OSTI)

    Not Available

    1983-05-01T23:59:59.000Z

    A mid-year review and forecast for the offshore energy focuses on the impact of energy prices, worldwide drilling, the market for marine transportation, the mobile rig market, the diving industry, construction prospects, and seismic activity. The price of oil is seen as the most influential factor affecting offshore programs being considered for the next 10 yr. The analysis of drilling data indicates the trend for offshore activity will continue to rise, notwithstanding the current rig activity statistics. The growing importance of remotely operated vehicles in the diving industry is noted.

  12. NREL Software Aids Offshore Wind Turbine Designs (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-10-01T23:59:59.000Z

    NREL researchers are supporting offshore wind power development with computer models that allow detailed analyses of both fixed and floating offshore wind turbines. While existing computer-aided engineering (CAE) models can simulate the conditions and stresses that a land-based wind turbine experiences over its lifetime, offshore turbines require the additional considerations of variations in water depth, soil type, and wind and wave severity, which also necessitate the use of a variety of support-structure types. NREL's core wind CAE tool, FAST, models the additional effects of incident waves, sea currents, and the foundation dynamics of the support structures.

  13. Maximum likelihood estimation for cooperative sequential adsorption

    E-Print Network [OSTI]

    Burton, Geoffrey R.

    Maximum likelihood estimation for cooperative sequential adsorption Mathew D. Penrose and Vadim;Maximum likelihood estimation for cooperative sequential adsorption M.D. Penrose, Department of the region. Keywords: cooperative sequential adsorption, space-time point pro- cess, maximum likelihood

  14. Estimating a mixed strategy employing maximum entropy

    E-Print Network [OSTI]

    Golan, Amos; Karp, Larry; Perloff, Jeffrey M.

    1996-01-01T23:59:59.000Z

    MIXED STRATEGY EMPLOYING MAXIMUM ENTROPY by Amos Golan LarryMixed Strategy Employing Maximum Entropy Amos Golan Larry S.Abstract Generalized maximum entropy may be used to estimate

  15. Factors affect offshore production loss control

    SciTech Connect (OSTI)

    Ash, C.S.

    1986-05-12T23:59:59.000Z

    Many aspects of petroleum measurement on an offshore production platform are the same as at an onshore facility, but there are some unique differences. Before going into them it should be noted that even in today's climate of low or declining oil prices that stock loss control is still important. Improving measurement of the quantity of oil transfers can help reduce the amount of stock that is ''unaccounted for'' or lost. As stock loss is reduced, the salable quantity increases, the gross revenue increases, and the net revenue increases. Even in cases where transfers are between two departments of the same company, accurate measurement and proper accountability are required because they often are the basis for determining costs and can thus affect the price that is charged on a later custody transfer. Inefficiencies in intracompany transfers can often hide real losses which may occur during intercompany transfers.

  16. Meren field water injection project offshore Nigeria

    SciTech Connect (OSTI)

    Adetoba, L.A.

    1984-04-01T23:59:59.000Z

    The Meren Water Injection Project, which is one of the largest in West Africa in terms of injection volume, secondary reserves to be recovered and cost, is located in the Meren field offshore Nigeria. This study presents an updated comprehensive plan to deplete 7 reservoir units in sands that have been producing under solution gas drive and gravity segregation with minimal water influx. The reservoir units contain ca 80% of the original oil-in-place in Meren field. Detailed studies have been undertaken to evaluate the performances of the 7 reservoirs with a view to developing a secondary recovery plan which has been brought into reality. Injection was to start in mid-1982 but was delayed until mid-1983. The effect of the delay and the changing of injector locations on recovery and cost is discussed.

  17. Structure, stratigraphy, and hydrocarbons offshore southern Kalimantan, Indonesia

    SciTech Connect (OSTI)

    Bishop, W.F.

    1980-01-01T23:59:59.000Z

    Offshore southern Kalimantan (Borneo), Indonesia, the Sunda Shelf is bounded on the south by the east-west-trending Java-Madura foreland basin and on the north by outcrops of the granitic core of Kalimantan. Major northeast-southwest-trending faults created a basin and ridge province which controlled sedimentation at least until early Miocene time. Just above the unconformity, the oldest pre-CD Limestone clastic strata are fluviatile and lacustrine, the remainder consisting largely of shallow-marine, calcareous shale with interbeds of fine-grained, quartzose sandstone. A flood of terrigenous detritus - Kudjung unit 3 - resulted from post-CD Limestone uplift, and is more widely distributed. Unit 3 consists largely of fluviatile sandstone interbedded with shale and mudstone, grading upward to marine clastics with a few thin limestones near the top. The resulting Kudjing unit 2 is largely a shallow-basinal deposit, comprising thin, micritic limestones interbedded with calcareous shale and mudstone. Infilling of the basins was nearly complete by the end of Kudjing unit 1 deposition. Eastern equivalents of Kudjing units 1 and 2 are known as the Berai limestone interval (comprising bank, reefal, basinal, and open-marine limestones, and marl). Of the three oil fields in the area, two are shut in, but one has produced nearly 100 million bbl. Gas shows were recorded in most wells of the area, but the maximum flow was 1.8 MMcf methane/day, although larger flows with high percentages of carbon dioxide and nitrogen were reported. Fine-grained clastic strata of unit 3 are continuous with those farther south, where geochemical data indicate good source and hydrocarbon-generating potential. Sandstones with reservoir capability are present in the clastic intervals, and several carbonate facies have sporadically developed porosity. A variety of structural and stratigraphic traps is present. 20 figures, 1 table.

  18. Boiler Maximum Achievable Control Technology (MACT) Technical...

    Energy Savers [EERE]

    Boiler Maximum Achievable Control Technology (MACT) Technical Assistance - Fact Sheet, April 2015 Boiler Maximum Achievable Control Technology (MACT) Technical Assistance - Fact...

  19. Routing Subsea Cables for Scottish Offshore Renewable Search Areas 

    E-Print Network [OSTI]

    Iredale, Ingrid

    2014-01-01T23:59:59.000Z

    The UK has been the leading nation in offshore renewable energy generation since 2010 (Kern et. al., 2014), due to its substantial resources, technical expertise and strong economic and political support (Jay, 2011). Many of the resources remain...

  20. alaskan offshore silts: Topics by E-print Network

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

    Caledonia Louis Geli Paris-Sud XI, Universit de 363 OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY Renewable Energy Websites Summary:...

  1. adjacent offshore area: Topics by E-print Network

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

    20 21 22 23 24 25 Next Page Last Page Topic Index 441 OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY Renewable Energy Websites Summary:...

  2. atividades offshore da: Topics by E-print Network

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

    Caledonia Louis Geli Paris-Sud XI, Universit de 388 OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY Renewable Energy Websites Summary:...

  3. Attitudes toward offshore oil development: A summary of current evidence

    E-Print Network [OSTI]

    Gramling, R; Freudenburg, Wm R

    2006-01-01T23:59:59.000Z

    History of oil well drilling. Houston: Gulf Publishing Co;1955. World’s deepest well. Drilling December:52. [8] Logandrilling efforts continued to expand, however, the offshore industry found itself in waters that were literally as well

  4. Aeroelastic Instabilities of Large Offshore and Onshore Wind Turbines: Preprint

    SciTech Connect (OSTI)

    Bir, G.; Jonkman, J.

    2007-08-01T23:59:59.000Z

    This paper examines the aeroelastic stability of a 5-MW conceptual wind turbine mounted on a floating barge and presents results for onshore and offshore configurations for various conditions.

  5. New Report Shows Trend Toward Larger Offshore Wind Systems, with...

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

    Energy Department today released a new report showing progress for the U.S. offshore wind energy market in 2012, including the completion of two commercial lease auctions for...

  6. Rhode Island to Build First Offshore Wind Farm

    Broader source: Energy.gov [DOE]

    Block Island, a small town with only 1,000 full-time, residents, is the site for a big project, when it will become home to Rhode Island’s first offshore wind farm.

  7. Multi-hazard Reliability Assessment of Offshore Wind Turbines

    E-Print Network [OSTI]

    Mardfekri Rastehkenari, Maryam 1981-

    2012-12-04T23:59:59.000Z

    A probabilistic framework is developed to assess the structural reliability of offshore wind turbines. Probabilistic models are developed to predict the deformation, shear force and bending moment demands on the support structure of wind turbines...

  8. Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine

    E-Print Network [OSTI]

    Bae, Yoon Hyeok

    2013-04-23T23:59:59.000Z

    In the present study, a numerical simulation tool has been developed for the rotor-floater-tether coupled dynamic analysis of Multiple Unit Floating Offshore Wind Turbine (MUFOWT) in the time domain including aero-blade-tower dynamics and control...

  9. "Design of Offshore Wind Turbines for Hurricane Resilience" Graduate Seminar

    E-Print Network [OSTI]

    Connor, Ed

    "Design of Offshore Wind Turbines for Hurricane Resilience" Graduate Seminar Thursday, December 5, 2013, 12pm ­ 1pm Andrew Myers, Ph.D. Northeastern University. "Computational Methods for Evolving

  10. Development of a composite repair system for reinforcing offshore risers

    E-Print Network [OSTI]

    Alexander, Christopher Richard

    2009-05-15T23:59:59.000Z

    A research program was conducted to investigate the application of composite materials in repairing corroded offshore risers, leading to the development of an optimized repair using a hybrid carbon/E-glass system. The objective of this research...

  11. Dynamic analysis of a 5 megawatt offshore floating wind turbine

    E-Print Network [OSTI]

    Harriger, Evan Michael

    2011-01-01T23:59:59.000Z

    1985. 23. Hau, E. Wind Turbines: Fundamentals, Technologies,for Floating Offshore Wind Turbines. Tech. no. NREL/CP-500-Full-scale Floating Wind Turbine." Statoil, 14 Oct. 2009.

  12. Multi-hazard Reliability Assessment of Offshore Wind Turbines 

    E-Print Network [OSTI]

    Mardfekri Rastehkenari, Maryam 1981-

    2012-12-04T23:59:59.000Z

    A probabilistic framework is developed to assess the structural reliability of offshore wind turbines. Probabilistic models are developed to predict the deformation, shear force and bending moment demands on the support structure of wind turbines...

  13. DOE Offers Conditional Commitment to Cape Wind Offshore Wind...

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

    step toward issuing a 150 million loan guarantee to support the construction of the Cape Wind offshore wind project with a conditional commitment to Cape Wind Associates, LLC. The...

  14. Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine 

    E-Print Network [OSTI]

    Bae, Yoon Hyeok

    2013-04-23T23:59:59.000Z

    In the present study, a numerical simulation tool has been developed for the rotor-floater-tether coupled dynamic analysis of Multiple Unit Floating Offshore Wind Turbine (MUFOWT) in the time domain including aero-blade-tower dynamics and control...

  15. Offshore Wind Energy Market Installed Capacity is Anticipated...

    Open Energy Info (EERE)

    Offshore Wind Energy Market Installed Capacity is Anticipated to Reach 52,120.9 MW by 2022 Home > Groups > Renewable Energy RFPs Wayne31jan's picture Submitted by Wayne31jan(150)...

  16. Offshore Wind Market Acceleration Projects | Department of Energy

    Energy Savers [EERE]

    to connect this offshore wind energy to the grid. The University of Delaware is examining potential effects of wind penetration on the Mid-Atlantic electric grid and facilitating...

  17. NREL: Wind Research - New Report Characterizes Existing Offshore...

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

    a three-year collaborative investigation with positive outlooks for U.S.-based offshore wind potential by 2030. September 4, 2014 The Energy Department has released the first...

  18. Offshore Code Comparison Collaboration Continuation (OC4), Phase I - Results of Coupled Simulations of an Offshore Wind Turbine with Jacket Support Structure: Preprint

    SciTech Connect (OSTI)

    Popko, W.; Vorpahl, F.; Zuga, A.; Kohlmeier, M.; Jonkman, J.; Robertson, A.; Larsen, T. J.; Yde, A.; Saetertro, K.; Okstad, K. M.; Nichols, J.; Nygaard, T. A.; Gao, Z.; Manolas, D.; Kim, K.; Yu, Q.; Shi, W.; Park, H.; Vasquez-Rojas, A.

    2012-03-01T23:59:59.000Z

    This paper presents the results of the IEA Wind Task 30, Offshore Code Comparison Collaboration Continuation Project - Phase 1.

  19. The submerged offshore breakwater and its effects on seafloor topography

    E-Print Network [OSTI]

    Tallent, James Russell

    1986-01-01T23:59:59.000Z

    THE SUBMERGED OFFSHORE BREAKWATER AND ITS EFFECTS ON SEAFLOOR TOPOGRAPHY A Thesis by JAMES RUSSELL TALLENT Submitted to the Graduate College of Texas AGM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE December 19BG Major Subject: Civil Engineering THE SUBMERGEO OFFSHORE BREAKWATER AND ITS EFFECTS ON SEAFLOOR TOPOGRAPHY A Thesis by JAMES RUSSELL TALLENT Approved as to style and content by: John B. Herbich (Chairman) Lauriston R. King...

  20. Alaska Maximum Number of Active Crews Engaged in Seismic Surveying (Number

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at Commercial andSeptemberProcessedDecade Year-0 Year-1Foot)of

  1. U.S. Maximum Number of Active Crews Engaged in Seismic Surveying (Number of

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb Mar Apr MayNov-142,234CubicSeismic

  2. Alaska Maximum Number of Active Crews Engaged in Seismic Surveying (Number

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Building Floorspace (Square Feet)SalesYear Jan Feb2009 2010 2011 2012 20130 0of

  3. U.S. Maximum Number of Active Crews Engaged in Seismic Surveying (Number of

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet) U.S.Developmental WellsYear Jan FebYear

  4. Conceptual Model of Offshore Wind Environmental Risk Evaluation System

    SciTech Connect (OSTI)

    Anderson, Richard M.; Copping, Andrea E.; Van Cleve, Frances B.; Unwin, Stephen D.; Hamilton, Erin L.

    2010-06-01T23:59:59.000Z

    In this report we describe the development of the Environmental Risk Evaluation System (ERES), a risk-informed analytical process for estimating the environmental risks associated with the construction and operation of offshore wind energy generation projects. The development of ERES for offshore wind is closely allied to a concurrent process undertaken to examine environmental effects of marine and hydrokinetic (MHK) energy generation, although specific risk-relevant attributes will differ between the MHK and offshore wind domains. During FY10, a conceptual design of ERES for offshore wind will be developed. The offshore wind ERES mockup described in this report will provide a preview of the functionality of a fully developed risk evaluation system that will use risk assessment techniques to determine priority stressors on aquatic organisms and environments from specific technology aspects, identify key uncertainties underlying high-risk issues, compile a wide-range of data types in an innovative and flexible data organizing scheme, and inform planning and decision processes with a transparent and technically robust decision-support tool. A fully functional version of ERES for offshore wind will be developed in a subsequent phase of the project.

  5. U.S. Offshore Wind Manufacturing and Supply Chain Development

    SciTech Connect (OSTI)

    Hamilton, Bruce Duncan [Navigant Consulting, Inc.

    2013-02-22T23:59:59.000Z

    The objective of the report is to provide an assessment of the domestic supply chain and manufacturing infrastructure supporting the U.S. offshore wind market. The report provides baseline information and develops a strategy for future development of the supply chain required to support projected offshore wind deployment levels. A brief description of each of the key chapters includes: » Chapter 1: Offshore Wind Plant Costs and Anticipated Technology Advancements. Determines the cost breakdown of offshore wind plants and identifies technical trends and anticipated advancements in offshore wind manufacturing and construction. » Chapter 2: Potential Supply Chain Requirements and Opportunities. Provides an organized, analytical approach to identifying and bounding the uncertainties associated with a future U.S. offshore wind market. It projects potential component-level supply chain needs under three demand scenarios and identifies key supply chain challenges and opportunities facing the future U.S. market as well as current suppliers of the nation’s land-based wind market. » Chapter 3: Strategy for Future Development. Evaluates the gap or competitive advantage of adding manufacturing capacity in the U.S. vs. overseas, and evaluates examples of policies that have been successful . » Chapter 4: Pathways for Market Entry. Identifies technical and business pathways for market entry by potential suppliers of large-scale offshore turbine components and technical services. The report is intended for use by the following industry stakeholder groups: (a) Industry participants who seek baseline cost and supplier information for key component segments and the overall U.S. offshore wind market (Chapters 1 and 2). The component-level requirements and opportunities presented in Section 2.3 will be particularly useful in identifying market sizes, competition, and risks for the various component segments. (b) Federal, state, and local policymakers and economic development agencies, to assist in identifying policies with low effort and high impact (Chapter 3). Section 3.3 provides specific policy examples that have been demonstrated to be effective in removing barriers to development. (c) Current and potential domestic suppliers in the offshore wind market, in evaluating areas of opportunity and understanding requirements for participation (Chapter 4). Section 4.4 provides a step-by-step description of the qualification process that suppliers looking to sell components into a future U.S. offshore wind market will need to follow.

  6. A critique of the performance of EIA within the offshore oil and gas sector

    SciTech Connect (OSTI)

    Barker, Adam, E-mail: adam.barker@manchester.ac.uk; Jones, Carys, E-mail: carys.jones@manchester.ac.uk

    2013-11-15T23:59:59.000Z

    The oil and gas sector is a key driver of the offshore economy. Yet, it is also associated with a number of unwanted environmental impacts which potentially threaten the long term economic and environmental viability of marine ecosystems. Environmental Impact Assessment (EIA) can potentially make a significant contribution to the identification and management of adverse impacts through the promotion of evidence based decision making. However, the extent to which EIA has been embraced by key stakeholders is poorly understood. On this basis, this paper provides an initial evaluation of EIA performance within the oil and gas sector. The methodology adopted for the paper consisted of the structured review of 35 Environmental Statements (ESs) along with interviews with regulators, operators, consultants and advisory bodies. The findings reveal a mixed picture of EIA performance with a significant number of ESs falling short of satisfactory quality and a tendency for the process to be driven by compliance rather than best practice. -- Highlights: • Concerns identified relating to impacts of offshore oil and gas industry. • Research assesses performance of EIA in addressing impacts. • Findings highlight weak quality standards and procedural deficiencies. • Institutional reforms identified in order to improve practice.

  7. Development of Offshore Wind Recommended Practice for U.S. Waters: Preprint

    SciTech Connect (OSTI)

    Musial, W. D.; Sheppard, R. E.; Dolan, D.; Naughton, B.

    2013-04-01T23:59:59.000Z

    This paper discusses how the American Petroleum Institute oil and gas standards were interfaced with International Electrotechnical Commission and other wind turbine and offshore industry standards to provide guidance for reliable engineering design practices for offshore wind energy systems.

  8. Final Report DE-EE0005380 - Assessment of Offshore Wind Farm...

    Office of Environmental Management (EM)

    DE-EE0005380 - Assessment of Offshore Wind Farm Effects on Sea Surface, Subsurface and Airborne Electronic Systems Final Report DE-EE0005380 - Assessment of Offshore Wind Farm...

  9. Floating offshore wind farms : demand planning & logistical challenges of electricity generation

    E-Print Network [OSTI]

    Nnadili, Christopher Dozie, 1978-

    2009-01-01T23:59:59.000Z

    Floating offshore wind farms are likely to become the next paradigm in electricity generation from wind energy mainly because of the near constant high wind speeds in an offshore environment as opposed to the erratic wind ...

  10. Large-Scale Offshore Wind Power in the United States: Executive Summary

    SciTech Connect (OSTI)

    Musial, W.; Ram, B.

    2010-09-01T23:59:59.000Z

    This document provides a summary of a 236-page NREL report that provides a broad understanding of today's offshore wind industry, the offshore wind resource, and the associated technology challenges, economics, permitting procedures, and potential risks and benefits.

  11. Federal offshore statistics: 1992. Leasing, exploration, production, and revenues as of December 31, 1992

    SciTech Connect (OSTI)

    Francois, D.K.

    1993-12-31T23:59:59.000Z

    The Outer Continental Shelf Lands Act, enacted in 1953 and amended several times, charges the Secretary of the Interior with the responsibility for administering and managing mineral exploration and development of the outer continental shelf, as well as for conserving its natural resources. This report documents the following: Federal offshore lands; offshore leasing activity and status; offshore development activity; offshore production of crude oil and natural gas; Federal offshore oil and natural gas sales volume and royalties; revenue from Federal offshore leases; disbursement of Federal offshore revenue; reserves and resource estimates of offshore oil and natural gas; oil pollution in US and international waters; and international activities and marine minerals. 11 figs., 83 tabs.

  12. DOE Launches High-Tech Research Buoys to Advance U.S. Offshore...

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

    Launches High-Tech Research Buoys to Advance U.S. Offshore Wind Development DOE Launches High-Tech Research Buoys to Advance U.S. Offshore Wind Development May 18, 2015 - 3:18pm...

  13. First U.S. Grid-Connected Offshore Wind Turbine Installed Off...

    Office of Environmental Management (EM)

    First U.S. Grid-Connected Offshore Wind Turbine Installed Off the Coast of Maine First U.S. Grid-Connected Offshore Wind Turbine Installed Off the Coast of Maine October 1, 2013 -...

  14. U.S. Department of Energy and SWAY Collaborate on Offshore Wind...

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

    U.S. Department of Energy and SWAY Collaborate on Offshore Wind Demonstration Project U.S. Department of Energy and SWAY Collaborate on Offshore Wind Demonstration Project October...

  15. Maximum entropy principal for transportation

    SciTech Connect (OSTI)

    Bilich, F. [University of Brasilia (Brazil); Da Silva, R. [National Research Council (Brazil)

    2008-11-06T23:59:59.000Z

    In this work we deal with modeling of the transportation phenomenon for use in the transportation planning process and policy-impact studies. The model developed is based on the dependence concept, i.e., the notion that the probability of a trip starting at origin i is dependent on the probability of a trip ending at destination j given that the factors (such as travel time, cost, etc.) which affect travel between origin i and destination j assume some specific values. The derivation of the solution of the model employs the maximum entropy principle combining a priori multinomial distribution with a trip utility concept. This model is utilized to forecast trip distributions under a variety of policy changes and scenarios. The dependence coefficients are obtained from a regression equation where the functional form is derived based on conditional probability and perception of factors from experimental psychology. The dependence coefficients encode all the information that was previously encoded in the form of constraints. In addition, the dependence coefficients encode information that cannot be expressed in the form of constraints for practical reasons, namely, computational tractability. The equivalence between the standard formulation (i.e., objective function with constraints) and the dependence formulation (i.e., without constraints) is demonstrated. The parameters of the dependence-based trip-distribution model are estimated, and the model is also validated using commercial air travel data in the U.S. In addition, policy impact analyses (such as allowance of supersonic flights inside the U.S. and user surcharge at noise-impacted airports) on air travel are performed.

  16. United States- Land Based and Offshore Annual Average Wind Speed at 100 Meters

    Broader source: Energy.gov [DOE]

    Full-size, high resolution version of the 100-meter land-based and offshore wind speed resource map.

  17. Plate tectonics and offshore boundary delimitation: Tunisia-Libya case at the International Court of Justice

    SciTech Connect (OSTI)

    Stanley, D.J.

    1983-03-01T23:59:59.000Z

    Advances in the technology for exploiting resources of the oceans, particularly recovery of hydrocarbons and minerals in deep water, is benefiting a growing number of nations. At the same time, however, economic and political pressures have induced concern and there is now a much increased emphasis on jurisdiction to divide the offshore areas between the 132 coastal nations. Negotiations affect research operations at sea and, in consequence, marine scientists have been made aware of offshore problems as highlighted by the Law of the Sea Treaty (UNCLOS III) and complications arising from the legal versus scientific definitions of continental shelves and margins. The first major offshore boundary case of international scope where plate tectonics has constituted a significant argument is the one recently brought before the International Court of Justice by Libya and Tunisia concerning the delimitation of their continental shelves. Of the two parties, Libya placed the greatest emphasis on this concept as a means to determine natural prolongation of its land territory into and under the sea. Tunisia contested Libya's use of the whole of the African continental landmass as a reference unit; in Tunisia's view, considerations of geography, geomorphology, and bathymetry are at least as relevant as are those of geology. In its landmark judgment (February 1982) - which almost certainly will have far-reaching consequences in future such boundary delimitation cases - the court pronounced that It is the outcome, not the evolution in the long-distant past, which is of importance, and that it is the present-day configuration of the coasts and sea bed which are the main factors to be considered, not geology.

  18. Lower cost offshore field development utilizing autonomous vehicles

    SciTech Connect (OSTI)

    Frisbie, F.R.; Vie, K.J.; Welch, D.W.

    1996-12-31T23:59:59.000Z

    The offshore oil and gas industry has the requirement to inspect offshore oil and gas pipelines for scour, corrosion and damage as well as inspect and intervene on satellite production facilities. This task is currently performed with Remotely Operated Vehicles (ROV) operated from dynamically positioned (DP) offshore supply or diving support boats. Currently, these tasks are expensive due to the high day rates for DP ships and the slow, umbilical impeded, 1 knot inspection rates of the tethered ROVs, Emerging Autonomous Undersea Vehicle (AUV) technologies offer opportunities to perform these same inspection tasks for 50--75% lower cost, with comparable or improved quality. The new generation LAPV (Linked Autonomous Power Vehicles) will operate from fixed facilities such as TLPs or FPFs and cover an operating field 10 kms in diameter.

  19. Offshore Renewable Energy R&D (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01T23:59:59.000Z

    This fact sheet describes the offshore renewable energy R&D efforts at NREL's NWTC. As the United States increases its efforts to tap the domestic energy sources needed to diversify its energy portfolio and secure its energy supply, more attention is being focused on the rich renewable resources located offshore. Offshore renewable energy sources include offshore wind, waves, tidal currents, ocean and river currents, and ocean thermal gradients. According to a report published by the National Renewable Energy Laboratory (NREL) in 2010,1 U.S. offshore wind resources have a gross potential generating capacity four times greater than the nation's present electric capacity, and the Electric Power Research Institute estimates that the nation's ocean energy resources could ultimately supply at least 10% of its electric supply. For more than 30 years, NREL has advanced the science of renewable energy while building the capabilities to guide rapid deployment of commercial applications. Since 1993, NREL's National Wind Technology Center (NWTC) has been the nation's premier wind energy research facility, specializing in the advancement of wind technologies that range in size from a kilowatt to several megawatts. For more than 8 years, the NWTC has been an international leader in the field of offshore floating wind system analysis. Today, researchers at the NWTC are taking their decades of experience and extensive capabilities and applying them to help industry develop cost-effective hydrokinetic systems that convert the kinetic energy in water to provide power for our nation's heavily populated coastal regions. The center's capabilities and experience cover a wide spectrum of wind and water energy engineering disciplines, including atmospheric and ocean fluid mechanics, aerodynamics; aeroacoustics, hydrodynamics, structural dynamics, control systems, electrical systems, and testing.

  20. Review of technology for Arctic offshore oil and gas recovery

    SciTech Connect (OSTI)

    Sackinger, W. M.

    1980-08-01T23:59:59.000Z

    The technical background briefing report is the first step in the preparation of a plan for engineering research oriented toward Arctic offshore oil and gas recovery. A five-year leasing schedule for the ice-prone waters of the Arctic offshore is presented, which also shows the projected dates of the lease sale for each area. The estimated peak production rates for these areas are given. There is considerable uncertainty for all these production estimates, since no exploratory drilling has yet taken place. A flow chart is presented which relates the special Arctic factors, such as ice and permafrost, to the normal petroleum production sequence. Some highlights from the chart and from the technical review are: (1) in many Arctic offshore locations the movement of sea ice causes major lateral forces on offshore structures, which are much greater than wave forces; (2) spray ice buildup on structures, ships and aircraft will be considerable, and must be prevented or accommodated with special designs; (3) the time available for summer exploratory drilling, and for deployment of permanent production structures, is limited by the return of the pack ice. This time may be extended by ice-breaking vessels in some cases; (4) during production, icebreaking workboats will service the offshore platforms in most areas throughout the year; (5) transportation of petroleum by icebreaking tankers from offshore tanker loading points is a highly probable situation, except in the Alaskan Beaufort; and (6) Arctic pipelines must contend with permafrost, making instrumentation necessary to detect subtle changes of the pipe before rupture occurs.

  1. Exploring Flexible Strategies in Engineering Systems Using Screening Models Applications to Offshore Petroleum Projects

    E-Print Network [OSTI]

    de Weck, Olivier L.

    , such as offshore petroleum exploration and production systems, generally require a significant amount of capital to Offshore Petroleum Projects by Jijun Lin B.E., Mechanical Engineering, Beijing University of Aeronautics Flexible Strategies in Engineering Systems Using Screening Models Applications to Offshore Petroleum

  2. Offshore Wind Jobs and Economic Development Impact: Four Regional Scenarios (Presentation)

    SciTech Connect (OSTI)

    Tegen, S.

    2014-11-01T23:59:59.000Z

    NREL's Jobs and Economic Development Impact (JEDI) Model for Offshore Wind, is a computer tool for studying the economic impacts of fixed-bottom offshore wind projects in the United States. This presentation provides the results of an analysis of four offshore wind development scenarios in the Southeast Atlantic, Great Lakes, Mid-Atlantic, and Gulf of Mexico regions.

  3. 1 1 1 1 1 1 2 2 Network of offshore wind farms connected by

    E-Print Network [OSTI]

    Heinemann, Detlev

    2 33 3 3 1 1 1 1 1 1 2 2 Network of offshore wind farms connected by gas insulated transmission of connecting these offshore wind farms by gas in- sulated transmission lines (GIL) is investigated. Aim, Germany Corresponding author: anja.drews@forwind.de Offshore wind parks in different stages.Green- in op

  4. Mesoscale modelling for an offshore wind farm Jake Badger*, Rebecca Barthelmie, Sten Frandsen, Merete Bruun Christiansen

    E-Print Network [OSTI]

    Mesoscale modelling for an offshore wind farm Jake Badger*, Rebecca Barthelmie, Sten Frandsen for an offshore wind farm in a coastal location. Spatial gradients and vertical profiles between 25 m and 70 m offshore wind farms tend to be placed within the coastal zone, the region within around 50km from

  5. A REAL OPTIONS OPTIMIZATION MODEL TO MEET AVAILABILITY REQUIREMENTS FOR OFFSHORE WIND TURBINES

    E-Print Network [OSTI]

    Sandborn, Peter

    wind farm with prognostic capabilities. Alternative energy sources such as offshore wind turbines-based maintenance. This is especially important for offshore wind farms that require non- traditional resources for a Typical Baseline Offshore Wind Project [2] Wind farms are capital intensive projects, and the economics

  6. TRANSMISSION OPTIONS FOR OFFSHORE WIND FARMS IN THE UNITED STATES Sally D. Wright, PE

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    TRANSMISSION OPTIONS FOR OFFSHORE WIND FARMS IN THE UNITED STATES Sally D. Wright, PE Anthony L@ecs.umass.edu, rerl@ecs.umass.edu Abstract While offshore wind farms have been installed in Europe for over a decade an introduction to transmission issues for offshore wind farms in North America, aimed towards non

  7. California offshore wind energy potential Michael J. Dvorak a,*, Cristina L. Archer b

    E-Print Network [OSTI]

    California (CA). The siting of an offshore wind farm is limited by water depth, with shallow water being generally preferable economically. Acceptable depths for offshore wind farms are divided into three based wind farms which peak at night, the offshore winds near Cape Mendocino are consistently fast

  8. Modelling of offshore wind turbine wakes with the wind farm program FLaP

    E-Print Network [OSTI]

    Heinemann, Detlev

    Modelling of offshore wind turbine wakes with the wind farm program FLaP Bernhard Lange(1) , Hans from the Danish offshore wind farm Vindeby. Vertical wake profiles and mean turbulence intensities are not modelled satisfactorily. Keywords: Offshore, wind farm, wake model, Vindeby, turbulence intensity

  9. EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES

    E-Print Network [OSTI]

    Heinemann, Detlev

    sites. The first large offshore wind farms are currently being built in several countries in Europe. For the planning of offshore wind farms the vertical wind speed profile is needed for two main reasons: WindEVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES

  10. ENERGY FOR SUSTAINABILITY: HIGHLY COMPLIANT FLOATING OFFSHORE WIND TURBINES: FEASIBILITY ASSESSMENT THROUGH THEORY, SIMULATION AND DESIGN

    E-Print Network [OSTI]

    Sweetman, Bert

    revolution that enables economic development of wind farms in very challenging deepwater offshore locationsA-1 ENERGY FOR SUSTAINABILITY: HIGHLY COMPLIANT FLOATING OFFSHORE WIND TURBINES: FEASIBILITY surrounding Europe, and plans are in place for offshore developments in the US. Locating these wind turbines

  11. RWT TOOL: OFFSHORE WIND ENERGY MAPPING FROM SAR C. B. Hasager, M. Nielsen, M. B. Christiansen

    E-Print Network [OSTI]

    much interest during the last decade. The adventure started in 1991 when the first offshore wind farm. New development plans near Horns Rev and Nysted are ongoing. Offshore wind farms are in development the highest spatial detail (~500 m by 500 m grid cells) and are observed within the offshore `wind-farming

  12. Novel Foundations for Offshore Wind Farms Research Proposal to EPSRC (August 2001)

    E-Print Network [OSTI]

    Byrne, Byron

    1 Novel Foundations for Offshore Wind Farms Research Proposal to EPSRC (August 2001) Prof G offshore foundations, in situ testing, tunnelling and reinforced soil). Only projects on shallow foundation grant GR/M55657 ( 17k) was for instrumentation of a field trial of an offshore caisson. Some preliminary

  13. Risk Analysis DOI: 10.1111/risa.12085 Quantifying the Hurricane Catastrophe Risk to Offshore

    E-Print Network [OSTI]

    Jaramillo, Paulina

    to generate 20% of its electricity from wind. Developers are actively planning offshore wind farms along the URisk Analysis DOI: 10.1111/risa.12085 Quantifying the Hurricane Catastrophe Risk to Offshore Wind of Energy has estimated that over 50 GW of offshore wind power will be required for the United States

  14. Influence of Nonlinear Irregular Waves on the Fatigue Loads of an Offshore Wind Turbine

    E-Print Network [OSTI]

    Papalambros, Panos

    it acts as a bottleneck to the realization of offshore wind farms that can compete with traditional energy sources [3]. Currently, offshore wind farms are typically sited in coastal areas with water depths aroundInfluence of Nonlinear Irregular Waves on the Fatigue Loads of an Offshore Wind Turbine Michiel B

  15. Importance of thermal effects and sea surface roughness for offshore wind resource assessment

    E-Print Network [OSTI]

    Heinemann, Detlev

    sites. The first large offshore wind farms are currently being built in several countries in EuropeImportance of thermal effects and sea surface roughness for offshore wind resource assessment National Laboratory, Roskilde, Denmark Abstract The economic feasibility of offshore wind power utilisation

  16. Environmental impact for offshore wind farms: Geolocalized Life Cycle Assessment (LCA) approach

    E-Print Network [OSTI]

    Boyer, Edmond

    Environmental impact for offshore wind farms: Geolocalized Life Cycle Assessment (LCA) approach and floating offshore wind farms. This work was undertaken within the EU- sponsored EnerGEO project, aiming, and its use for the evaluation of environmental impacts of wind energy. The effects of offshore wind farms

  17. LiDAR observations of offshore winds at future wind turbine operating heights

    E-Print Network [OSTI]

    at the Horns Rev offshore wind farm. The influence of atmospheric stability on the surface layer wind shear of offshore wind farms in the coming years. In contrast with the situation over land, the knowledge turbine manufacturers and wind farm developers, although the offshore environment represents other

  18. Offshore Wind Turbine Design: Addressing Uncertainty Drivers Sten Frandsen Niels Jacob Tarp-Johansen

    E-Print Network [OSTI]

    the next generation of offshore wind farms are designed. The aim of this paper is to discuss existingOffshore Wind Turbine Design: Addressing Uncertainty Drivers Sten Frandsen Niels Jacob Tarp@civil.auc.dk leje@elsam-eng.com Abstract: Current offshore wind turbine design methods have matured to a 1st

  19. Optimal Selection of AC Cables for Large Scale Offshore Wind Farms

    E-Print Network [OSTI]

    Hu, Weihao

    Optimal Selection of AC Cables for Large Scale Offshore Wind Farms Peng Hou, Weihao Hu, Zhe Chen@et.aau.dk, whu@iet.aau.dk, zch@iet.aau.dk Abstract--The investment of large scale offshore wind farms is high the operational requirements of the offshore wind farms and the connected power systems. In this paper, a new cost

  20. RECYCLING AND REMOVAL OF OFFSHORE WIND TURBINES AN INTERACTIVE METHOD FOR REDUCTION OF NEGATIVE ENVIRONMENTAL EFFECTS

    E-Print Network [OSTI]

    phases of new wind turbines. There are plans about offshore wind farms in many countries e.g. in northernRECYCLING AND REMOVAL OF OFFSHORE WIND TURBINES ­ AN INTERACTIVE METHOD FOR REDUCTION OF NEGATIVE and an analysis of future removal and recycling processes of offshore wind turbines. The method is process

  1. MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND FARM SITES

    E-Print Network [OSTI]

    Heinemann, Detlev

    MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND important for offshore wind energy utilisation are discussed and tested: Four models for the surface tested with data from the offshore field measurement Rødsand by extrapolating the measured 10 m wind

  2. Short-term Forecasting of Offshore Wind Farm Production Developments of the Anemos Project

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Short-term Forecasting of Offshore Wind Farm Production ­ Developments of the Anemos Project J to the large dimensions of offshore wind farms, their electricity production must be known well in advance networks) models were calibrated on power data from two offshore wind farms: Tunoe and Middelgrunden

  3. Comparison of Wake Model Simulations with Offshore Wind Turbine Wake Profiles Measured by Sodar

    E-Print Network [OSTI]

    Pryor, Sara C.

    a ship-mounted sodar at a small offshore wind farm. The experiments were conducted at varying distances Offshore wind farms have increased in size from the first phase of installation with up to 20 turbinesComparison of Wake Model Simulations with Offshore Wind Turbine Wake Profiles Measured by Sodar R

  4. Wind resources and wind farm wake effects offshore observed from satellite

    E-Print Network [OSTI]

    Wind resources and wind farm wake effects offshore observed from satellite Charlotte Bay Hasager to quantify the wake effect at two large offshore wind farms in Denmark. It is found that the wake velocity further. There is fast progress on planning and installation of offshore wind farms in the European waters

  5. A FETCH DEPENDENT MODEL OF SEA SURFACE ROUGHNESS FOR OFFSHORE WIND POWER UTILISATION

    E-Print Network [OSTI]

    Heinemann, Detlev

    , Resources, Roughness, Coastal Sea Areas, Waves, Rødsand 1 INTRODUCTION Large offshore wind farms are beingA FETCH DEPENDENT MODEL OF SEA SURFACE ROUGHNESS FOR OFFSHORE WIND POWER UTILISATION Bernhard Lange wind conditions of offshore sites, since the higher energy yield has to compensate the additional

  6. Analytical Modelling of Wind Speed Deficit in Large Offshore Wind Farms

    E-Print Network [OSTI]

    Pryor, Sara C.

    Analytical Modelling of Wind Speed Deficit in Large Offshore Wind Farms Sten Frandsen*, Rebecca areas.As is often the need for offshore wind farms, the model handles a regular array geometry for offshore wind farms, the model handles a priori a regular array geometry with straight rows of wind

  7. Feasibility of Underwater Sensor Networks for Lifetime Assessment of Offshore Civil Structures

    E-Print Network [OSTI]

    Zhou, Shengli

    farms, the Middelgrunden and Horn Revs offshore wind farms in Denmark, are considered based on numerical, Middelgrunden and Horns Rev offshore wind farms, are simulated as case studies using numerical simulation. In this paper, the network communication topology and in-network processing algorithm for two offshore wind

  8. GEOL 467/667/MAST 667 -GEOLOGICAL ASPECTS OF OFFSHORE WIND PROJECTS **TENTATIVE** COURSE SYLLABUS

    E-Print Network [OSTI]

    Firestone, Jeremy

    GEOL 467/667/MAST 667 - GEOLOGICAL ASPECTS OF OFFSHORE WIND PROJECTS **TENTATIVE** COURSE SYLLABUS Description: Investigation of the geological and geotechnical aspects of offshore wind projects. Emphasis will be designed around geological and geotechnical topics that are relevant to the development of offshore wind

  9. PREDICTION OF WAVES, WAKES AND OFFSHORE WIND THE RESULTS OF THE POW'WOW PROJECT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    PREDICTION OF WAVES, WAKES AND OFFSHORE WIND ­ THE RESULTS OF THE POW'WOW PROJECT Gregor Giebel: The POWWOW project (Prediction of Waves, Wakes and Offshore Wind, a EU Coordination Action) aimed to develop. Keywords: Wind resource, wave resource, offshore, short-term prediction, wakes 1 Introduction The nearly

  10. From the SelectedWorks of George R. Parsons Valuing the Visual Disamenity of Offshore Wind

    E-Print Network [OSTI]

    Delaware, University of

    From the SelectedWorks of George R. Parsons May 2011 Valuing the Visual Disamenity of Offshore Wind of Offshore Wind Power Projects at Varying Distances from the Shore: An Application on the Delaware Shoreline Andrew D. Krueger, George R. Parsons, and Jeremy Firestone ABSTRACT. Several offshore wind power projects

  11. From%laggard%to%leader:%% Explaining%offshore%wind%developments%in%

    E-Print Network [OSTI]

    Sussex, University of

    From%laggard%to%leader:%% Explaining%offshore%wind%developments%in% the%UK% Florian!laggard!to!leader:!Explaining! offshore!wind!developments!in!the!UK! Florian Kern1* , Adrian Smith1 , Chris Shaw1 , Rob Raven2 and Bram for publication in Energy Policy, 19 Feb 2014 Abstract Offshore wind technology has recently undergone rapid

  12. GEOL 663 -GEOLOGICAL ASPECTS OF OFFSHORE WIND COURSE SYLLABUS 2014 Fall Semester

    E-Print Network [OSTI]

    Delaware, University of

    GEOL 663 - GEOLOGICAL ASPECTS OF OFFSHORE WIND COURSE SYLLABUS ­ 2014 Fall Semester Course Meets will be designed around geological and geotechnical topics that are relevant to the development of offshore wind wind turbine foundations; 2) A review of existing, or under construction, offshore wind projects; and 3

  13. | | | | |Monday, July 16, 2012 Three Northeast Ohio offshore wind power projects

    E-Print Network [OSTI]

    Rollins, Andrew M.

    | | | | |Monday, July 16, 2012 Home Three Northeast Ohio offshore wind power projects secure federal money By SCOTT SUTTELL 1:52 pm, September 9, 2011 Three Northeast Ohio offshore wind power to "speed technical innovations, lower costs, and shorten the timeline for deploying offshore wind energy

  14. Energy Policy 35 (2007) 15841598 Public opinion about large offshore wind power: Underlying factors

    E-Print Network [OSTI]

    Firestone, Jeremy

    2007-01-01T23:59:59.000Z

    Energy Policy 35 (2007) 1584­1598 Public opinion about large offshore wind power: Underlying opinion regarding offshore wind power based on a survey of residents near a proposed development off Cape, the first offshore wind proposal in North America, in Nantucket Sound (MA, USA) has generated a strong

  15. Offshore wind resources from satellite SAR Charlotte Bay Hasager, Merete Bruun Christiansen, Morten Nielsen,

    E-Print Network [OSTI]

    Offshore wind resources from satellite SAR Charlotte Bay Hasager, Merete Bruun Christiansen, Morten ocean wind maps were described. For offshore wind resource estimation based on satellite observations and the near-coastal zone (up to 40 km offshore) is not mapped. In contrast, Envisat ASAR wind maps can

  16. Evaluation of Offshore Wind Simulations with MM5 in the Japanese and Danish Coastal Waters

    E-Print Network [OSTI]

    Heinemann, Detlev

    Evaluation of Offshore Wind Simulations with MM5 in the Japanese and Danish Coastal Waters Teruo to evaluate the accuracy of offshore wind simulation with the mesoscale model MM5, long-term simulations to simulate offshore wind conditions in the Japanese coastal waters even using a mesoscale model, compared

  17. Investigations of migratory birds during operation of Horns rev offshore wind

    E-Print Network [OSTI]

    Investigations of migratory birds during operation of Horns rev offshore wind farm: Preliminary analyses of bird studies conducted during spring 2004 in relation to the offshore wind farm at Horns Rev of the Horns Rev offshore wind farm - preliminary note on the issue of potential habitat loss. Christensen, T

  18. Effects on birds of an offshore wind park at Horns Rev: Environmental

    E-Print Network [OSTI]

    Effects on birds of an offshore wind park at Horns Rev: Environmental impact assessment NERI Report Environmental Research Institute Effects on birds of an offshore wind park at Horns Rev: Environmental impact of an offshore wind park at Horns Rev: Environmental impact assessment Authors: Henning Noer, Thomas Kjær

  19. VALUING PUBLIC PREFERENCES FOR OFFSHORE WIND POWER: A CHOICE EXPERIMENT APPROACH

    E-Print Network [OSTI]

    Firestone, Jeremy

    VALUING PUBLIC PREFERENCES FOR OFFSHORE WIND POWER: A CHOICE EXPERIMENT APPROACH by Andrew D. Krueger All Rights Reserved #12;ii VALUING PUBLIC PREFERENCES FOR OFFSHORE WIND POWER: A CHOICE EXPERIMENT thank you for your perspective on offshore renewable energy regulation. As committee members, your

  20. www.cesos.ntnu.no Author Centre for Ships and Ocean Structures Offshore Wind Turbine Operation

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    1 www.cesos.ntnu.no Author ­ Centre for Ships and Ocean Structures Offshore Wind Turbine Operation Structures Deep Water Offshore Wind Economic Production Cost WT Life Time : 20 Years Introduction Vast icing for offshore Wind Turbines ? · Wherever there is sea icing ! · Temperature bellow zero degree

  1. SUBSPACE-BASED DETECTION OF FATIGUE DAMAGE ON JACKET SUPPORT STRUCTURES OF OFFSHORE WIND TURBINES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    SUBSPACE-BASED DETECTION OF FATIGUE DAMAGE ON JACKET SUPPORT STRUCTURES OF OFFSHORE WIND TURBINES-based Damage Detec- tion (SSDD) method on model structures for an utilization of this approach on offshore wind damage in real size structural components of offshore wind turbines. KEYWORDS : Damage detection

  2. Simulation of electricity supply of an Atlantic island by offshore wind turbines and wave

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Simulation of electricity supply of an Atlantic island by offshore wind turbines and wave energy an electricity storage for a 5000 inhabitants island supplied by both marine renewables (offshore wind and waves community. Key words: Wave energy, offshore wind turbines, marine energy 1 Introduction Marine renewables

  3. Influences of offshore environmental conditions on wind shear profile parameters in Nantucket Sound

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Influences of offshore environmental conditions on wind shear profile parameters in Nantucket Sound@ecs.umass.edu ABSTRACT Simultaneous wind resource and oceanographic data are available from an offshore monitoring tower how oceanographic data can be used to aid offshore wind resource assessment evaluations. This study

  4. THE INFLUENCE OF WAVES ON THE OFFSHORE WIND Bernhard Lange, Jrgen Hjstrup*

    E-Print Network [OSTI]

    Heinemann, Detlev

    THE INFLUENCE OF WAVES ON THE OFFSHORE WIND RESOURCE Bernhard Lange, Jørgen Højstrup* Risø National and waves and thus in air-sea interaction in general. For predicting the offshore wind climate'8&7,21 The favourable wind resource at offshore compared to land sites is caused by the very low surface roughness

  5. MAST628 Syllabus-8/12/2014 p. 1 Offshore Wind Power: Science, engineering, and policy

    E-Print Network [OSTI]

    Delaware, University of

    MAST628 Syllabus- 8/12/2014 p. 1 Offshore Wind Power: Science, engineering, and policy MAST 628-4842, dveron@udel.edu, Robinson 114B Class web site with lecture notes: www.udel.edu/sakai UD offshore wind the multiple disciplines required to understand, plan, regulate, and develop offshore wind resources for large

  6. LEEDCo awarded $4 million to launch offshore wind development on Lake Erie

    E-Print Network [OSTI]

    Rollins, Andrew M.

    LEEDCo awarded $4 million to launch offshore wind development on Lake Erie By Teresa Dixon Murray in the United States, the Lake Erie Energy Development Corp. of Cleveland will launch an offshore wind, Democrat of Ohio, who has pushed for such alternative energy projects for years, said offshore wind could

  7. Incorporating Irregular Nonlinear Waves in Coupled Simulation of Offshore Wind Turbines

    E-Print Network [OSTI]

    Manuel, Lance

    Incorporating Irregular Nonlinear Waves in Coupled Simulation of Offshore Wind Turbines Puneet, and Environmental Engineering The University of Texas, Austin, TX 78712 Design of an offshore wind turbine requires on the support structure (monopile) of an offshore wind turbine. We present the theory for the irregular

  8. AN EVALUATION OF THE WILDLIFE IMPACTS OF OFFSHORE WIND DEVELOPMENT RELATIVE TO FOSSIL FUEL

    E-Print Network [OSTI]

    Firestone, Jeremy

    AN EVALUATION OF THE WILDLIFE IMPACTS OF OFFSHORE WIND DEVELOPMENT RELATIVE TO FOSSIL FUEL POWER. Jarvis All Rights Reserved #12;AN EVALUATION OF THE WILDLIFE IMPACTS OF OFFSHORE WIND DEVELOPMENT in offshore wind energy. I would also like to thank my committee members, Dr. Jeremy Firestone

  9. American Institute of Aeronautics and Astronautics Foundation Models for Offshore Wind Turbines

    E-Print Network [OSTI]

    Manuel, Lance

    American Institute of Aeronautics and Astronautics 1 Foundation Models for Offshore Wind Turbines of alternative models for monopile pile foundations for shallow-water offshore wind turbines has on extreme loads) is the most common type of foundation used today for offshore wind turbines; the support structure connects

  10. 1 Copyright 2007 by ASME SIMULATION OF OFFSHORE WIND TURBINE RESPONSE FOR

    E-Print Network [OSTI]

    Manuel, Lance

    1 Copyright © 2007 by ASME SIMULATION OF OFFSHORE WIND TURBINE RESPONSE FOR EXTREME LIMIT STATES P loads for an offshore wind turbine using simulation, statistical extrapolation is the method of choice in the design of offshore wind turbines against ultimate limit states, and a recent draft [1] of design

  11. DATA NORMALIZATION FOR FOUNDATION SHM OF AN OFFSHORE WIND TURBINE : A REAL-LIFE CASE STUDY

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    DATA NORMALIZATION FOR FOUNDATION SHM OF AN OFFSHORE WIND TURBINE : A REAL-LIFE CASE STUDY Wout the first results in the development of a SHM approach for the foun- dations of an offshore wind turbine the performance of the presented approach. KEYWORDS : Foundation Monitoring, Offshore Wind Turbine, Operational

  12. St h ti d i l i fStochastic dynamic analysis of offshore wind turbines

    E-Print Network [OSTI]

    Nørvåg, Kjetil

    1 St h ti d i l i fStochastic dynamic analysis of offshore wind turbines ­ with emphasis on fatigue Co te ts · Overview of offshore wind technology · Modelling of environmental conditions · Dynamic analysis of offshore bottom-fixed wind turbines · Modelling and dynamic analysis of floating wind turbines

  13. The dynamics of the Mississippi River plume: Impact of topography, wind and offshore forcing

    E-Print Network [OSTI]

    Miami, University of

    The dynamics of the Mississippi River plume: Impact of topography, wind and offshore forcing), The dynamics of the Mississippi River plume: Impact of topography, wind and offshore forcing on the fate of topography, winddriven and eddydriven circulation on the offshore removal of plume waters. A realistically

  14. A MODULAR SHM-SCHEME FOR ENGINEERING STRUCTURES UNDER CHANGING CONDITIONS: APPLICATION TO AN OFFSHORE WIND

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    TO AN OFFSHORE WIND TURBINE Moritz W. H¨ackell1, Raimund Rolfes1 1 Institute of Structural Analysis, Leibniz in common. A shift from fossil to renewable energy source is the logical con- sequence. (Offshore) wind : Offshore Wind Turbine, Machine Learning, Condition Parameter, Control Charts, Affinity Propagation

  15. Estimation of methane flux offshore SW Taiwan and the influence of tectonics on gas hydrate accumulation

    E-Print Network [OSTI]

    Lin, Andrew Tien-Shun

    Estimation of methane flux offshore SW Taiwan and the influence of tectonics on gas hydrate simulating reflectors (BSRs) imply the potential existence of gas hydrates offshore southwestern Taiwan settings in offshore SW Taiwan might strongly control the stability of gas hydrates, and thus affect

  16. Offshore Wind Technologie GmbH OWT | Open Energy Information

    Open Energy Info (EERE)

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

  17. ENDOW: EFFICIENT DEVELOPMENT OF OFFSHORE WINDFARMS Rebecca Barthelmie and Gunner Larsen, *Wind Energy Department, Ris National Laboratory, 4000 Roskilde,

    E-Print Network [OSTI]

    developers and turbine manufacturers to optimise power output from offshore wind farms through minimised wake offshore wind farms (Vindeby and Bockstigen) to undertake the first comprehensive evaluation of offshore with a mesoscale model focusing on boundary-layer development within and over a large offshore wind farm

  18. On Assessing the Accuracy of Offshore Wind Turbine Reliability-Based Design Loads from the Environmental Contour Method

    E-Print Network [OSTI]

    Manuel, Lance

    On Assessing the Accuracy of Offshore Wind Turbine Reliability-Based Design Loads from to derive design loads for an active stall-regulated offshore wind turbine. Two different Danish offshore contour method; wind turbine; offshore; reliability. INTRODUCTION Inverse reliability techniques

  19. Importance of thermal effects and sea surface roughness for wind resource and wind shear at offshore sites

    E-Print Network [OSTI]

    Heinemann, Detlev

    at offshore sites Bernhard Lange*, Søren Larsen# , Jørgen Højstrup# , Rebecca Barthelmie# *ForWind - Centre of offshore wind power utilisation depends on the favourable wind conditions offshore as compared to sites for this flow. It's applicability for wind power prediction at offshore sites is investigated using data from

  20. Access Framework: Model Text (November 2011) An Act to Establish a Framework for Development of Offshore Wind Power

    E-Print Network [OSTI]

    Firestone, Jeremy

    of Offshore Wind Power Whereas, the offshore waters of [State] are ecologically and economically vital public, Whereas, offshore wind power provides utility-scale renewable energy at competitive costs, helps to meet consequences; and Whereas, offshore wind power, being a domestic source of energy enhances U.S. energy

  1. A Predictive Maintenance Policy Based on the Blade of Offshore Wind Wenjin Zhu, Troyes University of Technology

    E-Print Network [OSTI]

    McCalley, James D.

    A Predictive Maintenance Policy Based on the Blade of Offshore Wind Turbine Wenjin Zhu, Troyes onshore to offshore locations [1]. As offshore wind turbines are located at remote sites withlimited]. Operation and maintenance (O&M) costs of off-shore wind turbines contribute about 25-30% to the total energy

  2. EIS-0511: Aguirre Offshore GasPort Project, Puerto Rico

    Broader source: Energy.gov [DOE]

    FERC prepared an EIS with 10 cooperating agencies, including DOE, for the proposed Aguirre Offshore GasPort Project. The proposal would include construction and operation of a marine LNG-receiving facility about 1 mile outside of Jobos Bay, near the towns of Salinas and Guayama, Puerto Rico, and a 4-mile subsea pipeline connecting to the Aguirre Plant in Salinas.

  3. Offshore Petroleum Resource Development and Marine Mammals: A Review and

    E-Print Network [OSTI]

    with all phases of petroleum exploration and production. The physical, physiological, and behavioral efOffshore Petroleum Resource Development and Marine Mammals: A Review and Research Recommendations J to cause acute toxicity. However, the long- term effects of accumulation of petroleum basic data needed

  4. U.S. Energy Demand, Offshore Oil Production and

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    U.S. Energy Demand, Offshore Oil Production and BP's Macondo Well Spill Tad Patzek, Petroleum form well-rounded petroleum engineers, and deliver science and technology to O&G Industry, while trying that run the U.S. Complexity, models, risks Gulf of Mexico's oil and gas production Conclusions ­ p.3/4 #12

  5. arctic offshore drilling: Topics by E-print Network

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

    offshore drilling First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Riser and wellhead monitoring for...

  6. Virginia Offshore Wind Cost Reduction Through Innovation Study (VOWCRIS) (Poster)

    SciTech Connect (OSTI)

    Maples, B.; Campbell, J.; Arora, D.

    2014-10-01T23:59:59.000Z

    The VOWCRIS project is an integrated systems approach to the feasibility-level design, performance, and cost-of-energy estimate for a notional 600-megawatt offshore wind project using site characteristics that apply to the Wind Energy Areas of Virginia, Maryland and North Carolina.

  7. Coupled dynamic analysis of floating offshore wind farms

    E-Print Network [OSTI]

    Shim, Sangyun

    2009-05-15T23:59:59.000Z

    it is economically feasible and technologically manageable. So far, most of the offshore wind farm research has been limited to fixed platforms in shallow-water areas. In the water depth deeper than 30m, however, floating-type wind farms tend to be more feasible...

  8. The world's offshore continental margins contain vast reserves of

    E-Print Network [OSTI]

    Texas at Austin, University of

    The world's offshore continental margins contain vast reserves of gas hydrate, a frozen form of nat-seafloor geology. Increasing use of marine multicomponent seismic technol- ogy by oil and gas companies now allows seafloor strata over distances of several kilometers across the Green Canyon area of the Gulf of Mexico

  9. Bidding optimum bonus for federal offshore oil and gas leases

    SciTech Connect (OSTI)

    Lohrenz, J.

    1987-09-01T23:59:59.000Z

    How a bidder should bid for federal offshore oil and gas leases offered by bonus bidding is detailed. Quantitative answers are given for bidders seeking to maximize value as well as reserves. The winner's curse is delineated. Further, it is shown how bidding as a joint venture rather than solo can diminish bidders' values.

  10. Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm

    E-Print Network [OSTI]

    #12;Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm 2004 Survey Report No. 1 March protection and at the wind turbine towers at six turbine sites. Video recordings were planned at different- scription. 2. Methodology Weather and wind conditions as well as hydrographical data such as current

  11. Electrical Collection and Transmission Systems for Offshore Wind Power: Preprint

    SciTech Connect (OSTI)

    Green, J.; Bowen, A.; Fingersh, L.J.; Wan, Y.

    2007-03-01T23:59:59.000Z

    The electrical systems needed for offshore wind farms to collect power from wind turbines--and transmit it to shore--will be a significant cost element of these systems. This paper describes the development of a simplified model of the cost and performance of such systems.

  12. Coupled dynamic analysis of floating offshore wind farms 

    E-Print Network [OSTI]

    Shim, Sangyun

    2009-05-15T23:59:59.000Z

    it is economically feasible and technologically manageable. So far, most of the offshore wind farm research has been limited to fixed platforms in shallow-water areas. In the water depth deeper than 30m, however, floating-type wind farms tend to be more feasible...

  13. Basic Integrative Models for Offshore Wind Turbine Systems 

    E-Print Network [OSTI]

    Aljeeran, Fares

    2012-07-16T23:59:59.000Z

    were modeled using apparent fixity level, Randolph elastic continuum, and modified cone models. The offshore wind turbine structures were developed using a finite element formulation. A two-bladed 3.0 megawatt (MW) and a three-bladed 1.5 MW capacity...

  14. Energy Efficient Pump Control for an Offshore Oil Processing System

    E-Print Network [OSTI]

    Yang, Zhenyu

    Esbjerg, Denmark (e-mail: yang@et.aau.dk). Ramboll Oil and Gas A/S, Willemoesgade 2, DK-6700 Esbjerg control, energy saving 1. INTRODUCTION Pump systems have been extensively used in offshore oil & gas industries, for instance, in order to get the crude oil/gas out of reservoirs, transport the produced oil/gas

  15. Optimization Online - Efficient Heuristic Algorithms for Maximum ...

    E-Print Network [OSTI]

    T. G. J. Myklebust

    2012-11-19T23:59:59.000Z

    Nov 19, 2012 ... Efficient Heuristic Algorithms for Maximum Utility Product Pricing Problems. T. G. J. Myklebust(tmyklebu ***at*** csclub.uwaterloo.ca)

  16. Analyzing the Deployment of Large Amounts of Offshore Wind to Design an Offshore Transmission Grid in the United States: Preprint

    SciTech Connect (OSTI)

    Ibanez, E.; Mai, T.; Coles, L.

    2012-09-01T23:59:59.000Z

    This paper revisits the results from the U.S. Department of Energy's '20% Wind Energy By 2030' study, which envisioned that 54 GW of offshore wind would be installed by said year. The analysis is conducted using the Regional Energy Deployment System (ReEDS), a capacity expansion model developed by the National Renewable Energy Laboratory. The model is used to optimize the deployment of the 54 GW of wind capacity along the coasts and lakes of the United States. The graphical representation of the results through maps will be used to provide a qualitative description for planning and designing an offshore grid. ReEDS takes into account many factors in the process of siting offshore wind capacity, such as the quality of the resource, capital and O&M costs, interconnection costs, or variability metrics (wind capacity value, forecast error, expected curtailment). The effect of these metrics in the deployment of offshore wind will be analyzed through examples in the results.

  17. PNNL: A Supervised Maximum Entropy Approach to Word Sense Disambiguation

    SciTech Connect (OSTI)

    Tratz, Stephen C.; Sanfilippo, Antonio P.; Gregory, Michelle L.; Chappell, Alan R.; Posse, Christian; Whitney, Paul D.

    2007-06-23T23:59:59.000Z

    In this paper, we described the PNNL Word Sense Disambiguation system as applied to the English All-Word task in Se-mEval 2007. We use a supervised learning approach, employing a large number of features and using Information Gain for dimension reduction. Our Maximum Entropy approach combined with a rich set of features produced results that are significantly better than baseline and are the highest F-score for the fined-grained English All-Words subtask.

  18. Some interesting consequences of the maximum entropy production principle

    SciTech Connect (OSTI)

    Martyushev, L. M. [Russian Academy of Sciences, Institute of Industrial Ecology, Ural Division (Russian Federation)], E-mail: mlm@ecko.uran.ru

    2007-04-15T23:59:59.000Z

    Two nonequilibrium phase transitions (morphological and hydrodynamic) are analyzed by applying the maximum entropy production principle. Quantitative analysis is for the first time compared with experiment. Nonequilibrium crystallization of ice and laminar-turbulent flow transition in a circular pipe are examined as examples of morphological and hydrodynamic transitions, respectively. For the latter transition, a minimum critical Reynolds number of 1200 is predicted. A discussion of this important and interesting result is presented.

  19. Evaluation and comparison of occupational noise exposure among workers on offshore and onshore oil well drilling rigs

    E-Print Network [OSTI]

    Suarez Garcia, Humberto

    1984-01-01T23:59:59.000Z

    Engineering Department, for the loan of equipment used for th is research. A special gratitude goes to Ing. Jav ier Mendieta, Safety Manager of Petroleos Mexicanos, for his help for the use of PEMEX facilities in my data collection. I would also like... are in Villahermosa, Tabasco, and the seven offshore rigs are in the Gulf of Campeche. These 15 drilling rigs belong to Petroleos Mexicanos (The Mexican Oil Company). The rig specifica- tions, rig numbers and name of the wells are included in Appendix A...

  20. Paraffin deposition in offshore oil production 

    E-Print Network [OSTI]

    Elphingstone, Gerald Mason

    1995-01-01T23:59:59.000Z

    Appendix A.2 . ) : dT" d * 2 * ? ? _ H* z dz* L 1 d NPrRxr*~d? 1 + Npr ^ ^ ^ (111.18) wi th in i t i a l and boundary conditions at z* = 0 at r* = 0 at r* = 1 at r * = 1 T* = 1 dr dr* ? m dB*8 _ NL ~dF ~~Nr Ste ks dT k dr" dT dr* (111....19) where NpT is the Prandt l number, Nste is the Stefan number, and ks is the thermal conductivity of the paraffinic solid. T h e dimensionless variables and groups are defined as v NPr = - a = T a T-Tb Tn ~ Th pc NSte = T -Tb Tn ? Th c(T0 - Tb...

  1. Integrated reservoir management in the Carpinteria Offshore Field

    SciTech Connect (OSTI)

    Whitney, E.M.; Pawar, R.J.; Kendall, R.P.

    1998-12-31T23:59:59.000Z

    The Carpinteria Offshore Field is located near Santa Barbara, California. The State of California owns the portion of the field nearest the coast, and the US Federal Government the portion of the field that lies beyond a statutory three-mile coastal water limit. This mature reservoir has yielded more than 100 million barrels of oil from five platforms in its 30 years of production. The US Department of Energy`s Los Alamos National Laboratory (managed by the University of California) has joined with the State Lands Commission of California, the US Department of Interior`s Minerals Management Service, and the independent operator of the field, Pacific Operators Offshore, Inc., in a unique collaboration to redevelop the field. The reservoir management strategy for the Carpinteria Field relies on a long-term investment in simulation tools and expertise. These technologies and expertise are available to all project participants through a virtual enterprise business model.

  2. Offshore telerobotic equipment shows potential for nuclear use

    SciTech Connect (OSTI)

    Yemington, C.R.

    1990-01-01T23:59:59.000Z

    Because mobile robots offer considerable promise for use in nuclear power plants, they are the subject of developmental efforts at national laboratories, universities, and other institutions. This paper suggests that development potential can be foreseen by examining robotic systems now used in the offshore oil industry where they have completely replaced divers in deep water and offer cost advantages over divers in all but the shallowest waters.

  3. Assessment of Offshore Wind Energy Resources for the United States

    SciTech Connect (OSTI)

    Schwartz, M.; Heimiller, D.; Haymes, S.; Musial, W.

    2010-06-01T23:59:59.000Z

    This report summarizes the offshore wind resource potential for the contiguous United States and Hawaii as of May 2009. The development of this assessment has evolved over multiple stages as new regional meso-scale assessments became available, new validation data was obtained, and better modeling capabilities were implemented. It is expected that further updates to the current assessment will be made in future reports.

  4. Drugs offshore: companies stepping up fight against hidden adversary

    SciTech Connect (OSTI)

    Redden, J.

    1986-01-01T23:59:59.000Z

    Oil companies worldwide are effectively fighting a growing nemesis, drug and alcohol abuse on offshore installations. It is estimated that companies are losing millions of dollars in lost productivity, accidents, and thefts caused by on-the-job use of illegal drugs. Some of the measures being employed to combat the use of such drugs, e.g., tight control, better communications, diversions for employees, and the use of sniffer dogs, are discussed.

  5. Maximum entropy segmentation of broadcast news 

    E-Print Network [OSTI]

    Christensen, Heidi; Kolluru, BalaKrishna; Gotoh, Yoshihiko; Renals, Steve

    2005-01-01T23:59:59.000Z

    speech recognizer and subsequently segmenting the text into utterances and topics. A maximum entropy approach is used to build statistical models for both utterance and topic segmentation. The experimental work addresses the effect on performance...

  6. Structural deformation in the offshore Santa Maria basin, California

    SciTech Connect (OSTI)

    Willingham, C.R. (Explorametrics, Carpinteria, CA (United States)); Heck, R.G. (R.G. Heck and Associates, Carpinteria, CA (United States)); Rietman, J.M. (Rietman Consultants, Santa Ana, CA (United States))

    1991-02-01T23:59:59.000Z

    The authors divide the offshore Santa Maria basin into the southern, central, and northern provinces based on the pattern, style, and timing of late Cenozoic deformation. From their analyses of over 2,000 km of CDP seismic data and offshore well data they prepared time structure contour maps for three basin-wide unconformities: top of basement, top of Miocene, and the unconformity between early and late Pliocene chronostratigraphic units. Isochron maps were constructed between these horizons and between the early/late Pliocene unconformity and the sea floor to evaluate timing of the deformation. All maps were converted to depth and isopach values based on a three-dimensional velocity model. The regional structure contour and isopach maps show that the offshore Santa Maria basin is characterized by localized crustal shortening orthogonal to the Pacific/North America plate margin and indications of post-Miocene to recent lateral slip along the eastern basin boundary, the San Simeon/Hosgri fault system.

  7. Model study of shoreline changes due to a series of offshore breakwaters

    E-Print Network [OSTI]

    Cords, Donald Alan

    1986-01-01T23:59:59.000Z

    . An engineer has no control . over most of these parameters but does control the length of the breakwaters, the distance offshore and the spacing between the breakwaters. The placement of the breakwaters has been mainly based on field experience. But due... coming straight at the beach have been causing severe beach erosion by carrying large amounts of sand offshore from the beach with every attack of severe wind waves. This study showed that offshore breakwaters tend to stabilize the variability...

  8. Federal Offshore--Gulf of Mexico Natural Gas Number of Gas and Gas

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at1,066,688Electricity Use as anCubicWells (Million

  9. U.S. Offshore Crude Oil and Natural Gas Rotary Rigs in Operation (Number of

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecade Year-0 Year-1(Billion Cubic

  10. U.S. Offshore Crude Oil and Natural Gas Rotary Rigs in Operation (Number of

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet)Year Jan Feb MarRevision Decreases

  11. Comparison of API & IEC Standards for Offshore Wind Turbine Applications in the U.S. Atlantic Ocean: Phase II; March 9, 2009 - September 9, 2009

    SciTech Connect (OSTI)

    Jha, A.; Dolan, D.; Gur, T.; Soyoz, S.; Alpdogan, C.

    2013-01-01T23:59:59.000Z

    This report compares two design guidelines for offshore wind turbines: Recommended Practice for Planning, Designing, and Constructing Fixed Offshore Platform Structures and the International Electrotechnical Commission 61400-3 Design Requirements for Offshore Wind Turbines.

  12. Exploring flexible strategies in engineering systems using screening models : applications to offshore petroleum projects

    E-Print Network [OSTI]

    Lin, Jijun, Ph. D. Massachusetts Institute of Technology

    2009-01-01T23:59:59.000Z

    Engineering Systems, such as offshore petroleum exploration and production systems, generally require a significant amount of capital investment under various technical and market uncertainties. Choosing appropriate designs ...

  13. Secretary Chu Unveils 41 New Offshore Wind Power R&D Projects...

    Energy Savers [EERE]

    The above map shows the headquarters locations of all 41 projects. Those shown in blue are focused on advancing offshore wind technologies, such as modeling and design of...

  14. Large-Scale Offshore Wind Power in the United States: Assessment of Opportunities and Barriers

    SciTech Connect (OSTI)

    Musial, W.; Ram, B.

    2010-09-01T23:59:59.000Z

    This paper assesses the potential for U.S. offshore wind to meet the energy needs of many coastal and Great Lakes states.

  15. Assessment of Technologies Used to Characterize Wildlife Populations in the Offshore Environment

    SciTech Connect (OSTI)

    Duberstein, Corey A.; Tagestad, Jerry D.; Larson, Kyle B.

    2011-12-09T23:59:59.000Z

    Wind energy development in the offshore environment can have both direct and indirect effects on wildlife, yet little is known about most species that use near-shore and offshore waters due in part to the difficulty involved in studying animals in remote, challenging environments. Traditional methods to characterize offshore wildlife populations include shipboard observations. Technological advances have provided researches with an array of technologies to gather information about fauna from afar. This report describes the use and application of radar, thermal and optical imagery, and acoustic detection technologies for monitoring birds, bats, and marine mammals in offshore environments.

  16. Offshoring of NPD in the Electronics Industry: Patterns and Recession Effects

    E-Print Network [OSTI]

    Kraemer, Kenneth L.; Dedrick, Jason; Dunkle, Debbie

    2010-01-01T23:59:59.000Z

    OFFSHORING OF NPD IN THE ELECTRONICS INDUSTRY: PATTERNS ANDOFFSHORING OF NPD IN THE ELECTRONICS INDUSTRY: PATTERNS ANDdevelopment (NPD) in the electronics industry. It has been

  17. New Modeling Tool Analyzes Floating Platform Concepts for Offshore Wind Turbines (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-02-01T23:59:59.000Z

    Researchers at the National Renewable Energy Laboratory (NREL) developed a new complex modeling and analysis tool capable of analyzing floating platform concepts for offshore wind turbines. The new modeling tool combines the computational methodologies used to analyze land-based wind turbines with the comprehensive hydrodynamic computer programs developed for offshore oil and gas industries. This new coupled dynamic simulation tool will enable the development of cost-effective offshore technologies capable of harvesting the rich offshore wind resources at water depths that cannot be reached using the current technology.

  18. Offshore Lubricants to Exhibit 7.07% CAGR from 2014 to 2020 Due...

    Open Energy Info (EERE)

    Due to Increased Investment in Offshore Exploration Projects Home > Groups > Increase Natural Gas Energy Efficiency John55364's picture Submitted by John55364(100) Contributor...

  19. Siting Study Framework and Survey Methodology for Marine and Hydrokinetic Energy Project in Offshore Southeast Florida

    SciTech Connect (OSTI)

    Vinick, Charles; Riccobono, Antonino, MS; Messing, Charles G., Ph.D.; Walker, Brian K., Ph.D.; Reed, John K., Ph.D.

    2012-02-28T23:59:59.000Z

    Dehlsen Associates, LLC was awarded a grant by the United States Department of Energy (DOE) Golden Field Office for a project titled 'Siting Study Framework and Survey Methodology for Marine and Hydrokinetic Energy Project in Offshore Southeast Florida,' corresponding to DOE Grant Award Number DE-EE0002655 resulting from DOE funding Opportunity Announcement Number DE-FOA-0000069 for Topic Area 2, and it is referred to herein as 'the project.' The purpose of the project was to enhance the certainty of the survey requirements and regulatory review processes for the purpose of reducing the time, efforts, and costs associated with initial siting efforts of marine and hydrokinetic energy conversion facilities that may be proposed in the Atlantic Ocean offshore Southeast Florida. To secure early input from agencies, protocols were developed for collecting baseline geophysical information and benthic habitat data that can be used by project developers and regulators to make decisions early in the process of determining project location (i.e., the siting process) that avoid or minimize adverse impacts to sensitive marine benthic habitat. It is presumed that such an approach will help facilitate the licensing process for hydrokinetic and other ocean renewable energy projects within the study area and will assist in clarifying the baseline environmental data requirements described in the U.S. Department of the Interior Bureau of Ocean Energy Management, Regulation and Enforcement (formerly Minerals Management Service) final regulations on offshore renewable energy (30 Code of Federal Regulations 285, published April 29, 2009). Because projects generally seek to avoid or minimize impacts to sensitive marine habitats, it was not the intent of this project to investigate areas that did not appear suitable for the siting of ocean renewable energy projects. Rather, a two-tiered approach was designed with the first step consisting of gaining overall insight about seabed conditions offshore southeastern Florida by conducting a geophysical survey of pre-selected areas with subsequent post-processing and expert data interpretation by geophysicists and experienced marine biologists knowledgeable about the general project area. The second step sought to validate the benthic habitat types interpreted from the geophysical data by conducting benthic video and photographic field surveys of selected habitat types. The goal of this step was to determine the degree of correlation between the habitat types interpreted from the geophysical data and what actually exists on the seafloor based on the benthic video survey logs. This step included spot-checking selected habitat types rather than comprehensive evaluation of the entire area covered by the geophysical survey. It is important to note that non-invasive survey methods were used as part of this study and no devices of any kind were either temporarily or permanently attached to the seabed as part of the work conducted under this project.

  20. Cell development obeys maximum Fisher information

    E-Print Network [OSTI]

    B. R. Frieden; R. A. Gatenby

    2014-04-29T23:59:59.000Z

    Eukaryotic cell development has been optimized by natural selection to obey maximal intracellular flux of messenger proteins. This, in turn, implies maximum Fisher information on angular position about a target nuclear pore complex (NPR). The cell is simply modeled as spherical, with cell membrane (CM) diameter 10 micron and concentric nuclear membrane (NM) diameter 6 micron. The NM contains about 3000 nuclear pore complexes (NPCs). Development requires messenger ligands to travel from the CM-NPC-DNA target binding sites. Ligands acquire negative charge by phosphorylation, passing through the cytoplasm over Newtonian trajectories toward positively charged NPCs (utilizing positive nuclear localization sequences). The CM-NPC channel obeys maximized mean protein flux F and Fisher information I at the NPC, with first-order delta I = 0 and approximate 2nd-order delta I = 0 stability to environmental perturbations. Many of its predictions are confirmed, including the dominance of protein pathways of from 1-4 proteins, a 4nm size for the EGFR protein and the approximate flux value F =10^16 proteins/m2-s. After entering the nucleus, each protein ultimately delivers its ligand information to a DNA target site with maximum probability, i.e. maximum Kullback-Liebler entropy HKL. In a smoothness limit HKL approaches IDNA/2, so that the total CM-NPC-DNA channel obeys maximum Fisher I. Thus maximum information approaches non-equilibrium, one condition for life.

  1. Permanent Home Number: Residential Number

    E-Print Network [OSTI]

    Viglas, Anastasios

    Permanent Home Number: Residential Number: Mobile: Please update my contact details. Signature nominated correspondence address as indicated below. Permanent Home Adress Residential Address Other Address (Must not be a PO Box) Residential Address (Must not be a PO Box) Other - Postal/Optional Address

  2. UNIT NUMBER:

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

    193 UNIT NUMBER: 197 UNIT NAME: CONCRETE RUBBLE PILE (30) REGULATORY STATUS: AOC LOCATION: Outside plant security fence, north of the plant on Big Bayou Creek on private property....

  3. Use of synthetic aperture radar for offshore wind resource assessment and wind farm development in the UK 

    E-Print Network [OSTI]

    Cameron, Iain Dickson

    2008-01-01T23:59:59.000Z

    The UK has an abundant offshore wind resource with offshore wind farming set to grow rapidly over the coming years. Optimisation of energy production is of the utmost importance and accurate estimates of wind speed distributions are critical...

  4. Offshore Code Comparison Collaboration within IEA Wind Annex XXIII: Phase III Results Regarding Tripod Support Structure Modeling

    SciTech Connect (OSTI)

    Nichols, J.; Camp, T.; Jonkman, J.; Butterfield, S.; Larsen, T.; Hansen, A.; Azcona, J.; Martinez, A.; Munduate, X.; Vorpahl, F.; Kleinhansl, S.; Kohlmeier, M.; Kossel, T.; Boker, C.; Kaufer, D.

    2009-01-01T23:59:59.000Z

    Offshore wind turbines are designed and analyzed using comprehensive simulation codes. This paper describes the findings of code-to-code verification activities of the IEA Offshore Code Comparison Collaboration.

  5. PHYSICAL REVIEW E 86, 041144 (2012) Efficiency at maximum power for classical particle transport

    E-Print Network [OSTI]

    Lindenberg, Katja

    2012-01-01T23:59:59.000Z

    PHYSICAL REVIEW E 86, 041144 (2012) Efficiency at maximum power for classical particle transport transport. DOI: 10.1103/PhysRevE.86.041144 PACS number(s): 05.70.Ln, 05.40.-a, 05.20.-y I. INTRODUCTION Over, operating between a hot and cold bath at temperatures T (1) and T (2) , respectively, possesses universal

  6. Maximum Likelihood Haplotyping for General Pedigrees

    E-Print Network [OSTI]

    Friedman, Nir

    networks. The use of Bayesian networks enables efficient maximum likelihood haplotyping for more complex for the variables of the Bayesian network. The presented optimization algorithm also improves likelihood Analysis, Pedigree, superlink. Abstract Haplotype data is valuable in mapping disease-susceptibility genes

  7. Weak Scale From the Maximum Entropy Principle

    E-Print Network [OSTI]

    Yuta Hamada; Hikaru Kawai; Kiyoharu Kawana

    2014-09-23T23:59:59.000Z

    The theory of multiverse and wormholes suggests that the parameters of the Standard Model are fixed in such a way that the radiation of the $S^{3}$ universe at the final stage $S_{rad}$ becomes maximum, which we call the maximum entropy principle. Although it is difficult to confirm this principle generally, for a few parameters of the Standard Model, we can check whether $S_{rad}$ actually becomes maximum at the observed values. In this paper, we regard $S_{rad}$ at the final stage as a function of the weak scale ( the Higgs expectation value ) $v_{h}$, and show that it becomes maximum around $v_{h}={\\cal{O}}(300\\text{GeV})$ when the dimensionless couplings in the Standard Model, that is, the Higgs self coupling, the gauge couplings, and the Yukawa couplings are fixed. Roughly speaking, we find that the weak scale is given by \\begin{equation} v_{h}\\sim\\frac{T_{BBN}^{2}}{M_{pl}y_{e}^{5}},\

  8. Weak Scale From the Maximum Entropy Principle

    E-Print Network [OSTI]

    Hamada, Yuta; Kawana, Kiyoharu

    2014-01-01T23:59:59.000Z

    The theory of multiverse and wormholes suggests that the parameters of the Standard Model are fixed in such a way that the radiation of the $S^{3}$ universe at the final stage $S_{rad}$ becomes maximum, which we call the maximum entropy principle. Although it is difficult to confirm this principle generally, for a few parameters of the Standard Model, we can check whether $S_{rad}$ actually becomes maximum at the observed values. In this paper, we regard $S_{rad}$ at the final stage as a function of the weak scale ( the Higgs expectation value ) $v_{h}$, and show that it becomes maximum around $v_{h}={\\cal{O}}(300\\text{GeV})$ when the dimensionless couplings in the Standard Model, that is, the Higgs self coupling, the gauge couplings, and the Yukawa couplings are fixed. Roughly speaking, we find that the weak scale is given by \\begin{equation} v_{h}\\sim\\frac{T_{BBN}^{2}}{M_{pl}y_{e}^{5}},\

  9. Integrating Correlated Bayesian Networks Using Maximum Entropy

    SciTech Connect (OSTI)

    Jarman, Kenneth D.; Whitney, Paul D.

    2011-08-30T23:59:59.000Z

    We consider the problem of generating a joint distribution for a pair of Bayesian networks that preserves the multivariate marginal distribution of each network and satisfies prescribed correlation between pairs of nodes taken from both networks. We derive the maximum entropy distribution for any pair of multivariate random vectors and prescribed correlations and demonstrate numerical results for an example integration of Bayesian networks.

  10. Integrating human related errors with technical errors to determine causes behind offshore accidents

    E-Print Network [OSTI]

    Aamodt, Agnar

    Integrating human related errors with technical errors to determine causes behind offshore of offshore accidents there is a continuous focus on safety improvements. An improved evaluation method concepts in the model are structured in hierarchical categories, based on well-established knowledge

  11. OC3 -- Benchmark Exercise of Aero-Elastic Offshore Wind Turbine Codes: Preprint

    SciTech Connect (OSTI)

    Passon, P.; Kuhn, M.; Butterfield, S.; Jonkman, J.; Camp, T.; Larsen, T. J.

    2007-08-01T23:59:59.000Z

    This paper introduces the work content and status of the first international investigation and verification of aero-elastic codes for offshore wind turbines as performed by the "Offshore Code Comparison Collaboration" (OC3) within the "IEA Wind Annex XXIII -- Subtask 2".

  12. Hurricane wind fields needed to assess risk to offshore wind farms

    E-Print Network [OSTI]

    Jaramillo, Paulina

    LETTER Hurricane wind fields needed to assess risk to offshore wind farms In their paper in PNAS losses attributable to hurricane activity at four hypothetical offshore wind farm sites. We found one a 20-y typical wind farm lifetime. They combined a county annual landfall frequency probability density

  13. Loading and Response of Offshore Wind Turbine Support Structures: Prediction with Comparison to Measured Data

    E-Print Network [OSTI]

    Sweetman, Bert

    Loading and Response of Offshore Wind Turbine Support Structures: Prediction with Comparison, offshore wind support platforms differ from oil platforms is several important ways: First, wind platforms is often closer to frequencies at which there is meaningful wave energy. Second, wind farms often include

  14. Probability distributions for offshore wind speeds Eugene C. Morgan a,*, Matthew Lackner b

    E-Print Network [OSTI]

    Vogel, Richard M.

    Probability distributions for offshore wind speeds Eugene C. Morgan a,*, Matthew Lackner b Wind turbine energy output Weibull distribution Extreme wind a b s t r a c t In planning offshore wind farms, short-term wind speeds play a central role in estimating various engi- neering parameters

  15. Transient Studies in Large Offshore Wind Farms, Taking Into Account Network Breaker Interaction

    E-Print Network [OSTI]

    Bak, Claus Leth

    Transient Studies in Large Offshore Wind Farms, Taking Into Account Network Breaker Interaction studies in offshore wind farms, PSCAD. I. INTRODUCTION IN OWF applications, the consequences of component) are considered a pos- sible source of experienced component failures in existing off- shore wind farms (OWFs

  16. DISTRIBUTION AND ECOLOGY OF SKIPJACK TUNA, KATSUWONUS PELAMIS, IN AN OFFSHORE AREA OF THE

    E-Print Network [OSTI]

    DISTRIBUTION AND ECOLOGY OF SKIPJACK TUNA, KATSUWONUS PELAMIS, IN AN OFFSHORE AREA OF THE EASTERN, Katsuwonus pelamis, were studied in the offshore eastern tropical Pacific between lat. 15°N and 50 S, long and relative abun- dance of skipjack tuna, Katsuwonus pelamis, in relation to environmental conditions

  17. Simplified dynamic models for control of riser slugging in offshore oil production

    E-Print Network [OSTI]

    Skogestad, Sigurd

    ForReview Only Simplified dynamic models for control of riser slugging in offshore oil production, Department of Chemical Engineering Keywords: oil production, two-phase flow, severe slugging, riser slugging for control of riser slugging in offshore oil production Esmaeil Jahanshahi, Sigurd Skogestad Department

  18. Federal offshore statistics: 1995 - leasing, exploration, production, and revenue as of December 31, 1995

    SciTech Connect (OSTI)

    Gaechter, R.A.

    1997-07-01T23:59:59.000Z

    This report provides data on federal offshore operations for 1995. Information is included for leasing activities, development, petroleum and natural gas production, sales and royalties, revenue from federal offshore leasing, disbursement of federal revenues, reserves and resource estimates, and oil pollution in U.S. and international waters.

  19. Cyclic behaviour of monopile foundations for offshore wind turbines in clay

    E-Print Network [OSTI]

    Lau, Ben Hong

    2015-06-09T23:59:59.000Z

    Investment into offshore wind farms has been growing to address the growing threat of climate change. The majority of offshore wind turbines (both current and planned) are founded on monopiles, large circular steel pipe piles ranging from 4.0 m – 7...

  20. HVDC Connected Offshore Wind Power Plants: Review and Outlook of Current Research

    E-Print Network [OSTI]

    Bak, Claus Leth

    HVDC Connected Offshore Wind Power Plants: Review and Outlook of Current Research Jakob Glasdam-of-the-art review on grid integration of large offshore wind power plants (OWPPs) using high voltage direct voltage Sørensen Wind Power, Electrical Systems DONG Energy Fredericia, Denmark jakgl@dongenergy.dk Mogens Blanke

  1. An Assessment of Converter Modelling Needs for Offshore Wind Power Plants Connected via VSC-

    E-Print Network [OSTI]

    Bak, Claus Leth

    An Assessment of Converter Modelling Needs for Offshore Wind Power Plants Connected via VSC- HVDC, especially in case of connection of offshore wind power plants (OWPPs). Modelling challenges are faced Networks Jakob Glasdam, Lorenzo Zeni, Jesper Hjerrild, Lukasz Kocewiak, Bo Hesselbaek Wind Power

  2. New report assesses offshore wind technology challenges and potential risks and benefits.

    E-Print Network [OSTI]

    New report assesses offshore wind technology challenges and potential risks and benefits. The report estimates that U.S. offshore winds have a gross potential generating capacity four times greater wind resources can provide many potential benefits, and with effective research, policies

  3. Update on onshore disposal of offshore drilling wastes

    SciTech Connect (OSTI)

    Veil, J. A.

    1999-11-29T23:59:59.000Z

    The US Environmental Protection Agency (EPA) is developing effluent limitations guidelines to govern discharges of cuttings from wells drilled using synthetic-based muds. To support this rulemaking, Argonne National Laboratory was asked by EPA and the US Department of Energy (DOE) to collect current information about those onshore commercial disposal facilities that are permitted to receive offshore drilling wastes. Argonne contacted state officials in Louisiana, Texas, California and Alaska to obtain this information. The findings, collected during October and November 1999, are presented by state.

  4. Offshore application of a novel technology for drilling vertical boreholes

    SciTech Connect (OSTI)

    Foster, P.E. [Elf Enterprise Caldeonia Ltd., Aberdeen (United Kingdom); Aitken, A. [Baker Hughes INTEQ, Aberdeen (United Kingdom)

    1996-03-01T23:59:59.000Z

    A new concept for automatically drilling vertical boreholes was recently implemented by Elf Enterprise Caledonia called the vertical drilling system (VDS). The VDS was used to drill the 16-in. hole section of a North Sea exploration well. This was the first time this technology had been used offshore, drilling from a semisubmersible drilling unit. The VDS was shown to have an application in penetrating a drilling target that required a near-vertical wellbore. Technical functioning of the tool and field experience is reported along with performance comparisons to offset wells.

  5. Offshore Wind Technology Development Projects | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM PolicyOf EnvironmentalGuide, JulyIssueOffshore Wind

  6. Garden State Offshore Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualPropertyd8c-a9ae-f8521cbb8489InformationFrenchtown, NewG22 Jump to: navigation,LogOffshore

  7. Offshore Drilling Safety and Response Technologies | Department of Energy

    Office of Environmental Management (EM)

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

  8. U.S. Offshore Wind Port Readiness | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sureReportsofDepartmentSeries | Department of EnergyU.S. Offshore Wind

  9. AWEA Offshore WINDPOWER 2015 Conference & Exhibition | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA Newsletters 20103-03 AUDIT REPORT: OAS-L-03-03 December 3,Offshore

  10. New Reports Chart Offshore Wind's Path Forward | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy:Nanowire Solar541,9337, 2011R - 445Reports Chart Offshore Wind's

  11. DOE Announces Webinars on an Offshore Wind Economic Impacts Model,

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

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

  12. 2011 DOE Funded Offshore Wind Project Updates | 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 onYouTube YouTube Note: Since the YouTube platform is always evolving, soFuel Cell Technologies1 -2011 DOE Funded Offshore

  13. Offshore Lubricants Market Analysis | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns Jumpsource HistoryFracturesOceano,InfrastructureOffshore

  14. Offshore Lubricants Market Size | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns JumpsourceOffshore Lubricants Market Size Home John55364's

  15. Offshore Lubricants Market Trends | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns JumpsourceOffshore Lubricants Market Size Home

  16. Offshore Wind Energy Market Installed Capacity is Anticipated to Reach

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRoseConcerns JumpsourceOffshore Lubricants Market Size Home52,120.9 MW by

  17. U.S. Offshore Wind Advanced Technology Demonstration Projects Public

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCOSystems Analysis Success| DepartmentEnergyFeedMeeting Transcript for Offshore

  18. Sandia Energy - Offshore Wind RD&D: Sediment Transport

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol Home Distribution Grid IntegrationOffshore Wind RD&D: Sediment Transport

  19. Offshore Wind Research and Development | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterEnergyGlossary ofHomeJC3Minh LeOffice ofEnergyOfficeOffshore

  20. United States Offshore Wind Resource Map at 90 Meters

    Wind Powering America (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells, Wisconsin: EnergyWyandanch,EagaAbout PrintableEducationOffshore

  1. Maryland Offshore Wind Annual Meeting | 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 onYouTube YouTube Note: Since the.pdfBreaking ofOil & GasTechnical Publications » MarketMaryland Offshore Wind Annual

  2. Mustang Island Offshore Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose BendMiasoleTremor(Question) | OpenGAIsland Offshore Wind Farm Jump

  3. Property:PotentialOffshoreWindCapacity | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I GeothermalPotentialBiopowerSolidGeneration Jump to:PotentialOffshoreWindCapacity Jump to: navigation, search

  4. Property:PotentialOffshoreWindGeneration | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I GeothermalPotentialBiopowerSolidGeneration Jump to:PotentialOffshoreWindCapacity Jump to: navigation,

  5. An international comparison of Scotland and Newfoundland's offshore marine industries: exploring the connections among commercial fisheries and offshore oil and gas 

    E-Print Network [OSTI]

    Lowitt, Kerrie

    The development of the offshore oil industry in the past fifty years has created heightened interactions at sea, where traditionally fishing activities dominated. This study explores the nature of liaison bodies that have formed between...

  6. The Application of Suction Caisson Foundations to Offshore Wind Turbines Extracts from a proposal to the DTI

    E-Print Network [OSTI]

    Byrne, Byron

    The market for offshore wind farms in the UK is expected to be substantial. The initial sites proposed offshore wind farm development may require the installation of up to fifty similar or identical units for application on offshore wind farms for the following reasons: · Suction caissons are simple steel fabrications

  7. Abstract--This paper presents the harmonic analysis of offshore wind farm (OWF) models with full converters

    E-Print Network [OSTI]

    Bak, Claus Leth

    Abstract--This paper presents the harmonic analysis of offshore wind farm (OWF) models with full will be discussed based on measurements from offshore wind farm. Index Terms--full-rating converters, harmonic analysis, offshore wind farm, wind turbine, validation with measurements I. INTRODUCTION HE tendency

  8. A review of the economics of offshore wind farms Rebecca J. Barthelmie1 and Sara Pryor2,1

    E-Print Network [OSTI]

    Pryor, Sara C.

    A review of the economics of offshore wind farms Rebecca J. Barthelmie1 and Sara Pryor2,1 1 prototype offshore wind farms, developed and installed during the 1990's, to the commercial wind farms offshore wind farms compete with moderate onshore locations. We summarise the transition to increasing

  9. Short-term Wind Power Prediction for Offshore Wind Farms -Evaluation of Fuzzy-Neural Network Based Models

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Short-term Wind Power Prediction for Offshore Wind Farms - Evaluation of Fuzzy-Neural Network Based of offshore farms and their secure integration to the grid. Modeling the behavior of large wind farms presents the new considerations that have to be made when dealing with large offshore wind farms

  10. Framework for assessing impacts of pile-driving noise from offshore wind farm construction on a harbour seal population

    E-Print Network [OSTI]

    Aberdeen, University of

    Framework for assessing impacts of pile-driving noise from offshore wind farm construction farm Marine mammal Offshore wind farm developments may impact protected marine mammal populations (Jay, 2011; Toke, 2011). In the North Sea, many proposed wind farm sites are on submerged offshore

  11. OWEMES -Offshore Wind And Other Marine Renewable Energies In Mediterranean And European Seas Civitavecchia (Italy), 20th

    E-Print Network [OSTI]

    Heinemann, Detlev

    OWEMES - Offshore Wind And Other Marine Renewable Energies In Mediterranean And European Seas Civitavecchia (Italy), 20th -22th April 2006 How to avoid Biases in Offshore Wind Power Forecasting Lueder von, adaptive system, Neural Network, single site forecast, systematic error Abstract Large-scale offshore wind

  12. Satellite data for high resolution offshore wind resource mapping: A data fusion approach M.B. Ben Ticha a,*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Satellite data for high resolution offshore wind resource mapping: A data fusion approach M.B. Ben accurate high spatial and temporal resolutions wind measurements. Offshore, satellite data are an accurate radar, scatterometer, data fusion, offshore wind energy resource assessment. 1. INTRODUCTION Since

  13. Large CO2 reductions via offshore wind power matched to inherent storage in energy end-uses

    E-Print Network [OSTI]

    Jacobson, Mark

    Large CO2 reductions via offshore wind power matched to inherent storage in energy end-uses Willett develop methods for assessing offshore wind resources, using a model of the vertical structure offshore wind power matched to inherent storage in energy end- uses, Geophys. Res. Lett., 34, L02817, doi

  14. Valuing Public Preferences for Offshore Wind Power Andrew D. Krueger, University of Delaware, College of Marine and Earth Studies

    E-Print Network [OSTI]

    Firestone, Jeremy

    Valuing Public Preferences for Offshore Wind Power Andrew D. Krueger, University of Delaware in Massachusetts, New York, Delaware, and Texas. For Delaware, offshore wind power is currently the only cost public opposition, regulatory obstacles, and lack of incentives. Table 1: Delaware Offshore Wind Power

  15. Journal of Marine Research. 47, 81-109, 1989 The response of the coastal ocean to strong offshore winds

    E-Print Network [OSTI]

    the response of the coastal ocean to strong offshore winds: a linear 11/2-layer model, and a nonlinear 11 the wind strengthens there is an ageostrophic current (not Ekman drift) that is directed offshore toward its initial state. Throughout the wind event, cyclonic and anticyclonic gyres spin up offshore

  16. Calculating the offshore wind power resource: Robust assessment methods applied to the U.S. Atlantic Coast

    E-Print Network [OSTI]

    Firestone, Jeremy

    Calculating the offshore wind power resource: Robust assessment methods applied to the U 2011 Available online xxx Keywords: Wind power Offshore wind power Resource assessment Marine spatial, annual energy output is calculated for a representative offshore wind turbine. The average power resource

  17. Paper No. 2006-JSC-397 Agarwal Design Loads for an Offshore Wind Turbine using Statistical Extrapolation from Limited Field Data

    E-Print Network [OSTI]

    Manuel, Lance

    Paper No. 2006-JSC-397 Agarwal Design Loads for an Offshore Wind Turbine using Statistical a field measurement campaign. At the Blyth offshore wind farm in the United Kingdom, a 2MW wind turbine of variability in the parameters for load distribution is investigated. KEY WORDS: Offshore wind turbines

  18. 2 Large CO2 reductions via offshore wind power matched to inherent 3 storage in energy end-uses

    E-Print Network [OSTI]

    Firestone, Jeremy

    2 Large CO2 reductions via offshore wind power matched to inherent 3 storage in energy end-uses 4] We develop methods for assessing offshore wind 9 resources, using a model of the vertical structure. Dhanju, R. W. 26 Garvine, and M. Z. Jacobson (2007), Large CO2 reductions via 27 offshore wind power

  19. Assessment of the Southern New England Offshore Wind Energy Resource James F. Manwell, Anthony Rogers, Jon G. McGowan

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    1 Assessment of the Southern New England Offshore Wind Energy Resource James F. Manwell, Anthony the potential for the near term development of offshore wind energy projects in that region. The work summarized here consists of four aspects: 1) a review of existing offshore wind data, 2) the measurement of new

  20. An assessment of the mechanical stability of wells offshore Nigeria

    SciTech Connect (OSTI)

    Lowrey, J.P.; Ottesen, S.

    1995-03-01T23:59:59.000Z

    In 1991 lost time due to stuck pipe related drilling problems accounted for approximately 18% of total drilling time in Mobil Producing Nigeria Ultd.`s (MPN) offshore operations. The primary cause of stuck pipe was identified as mechanical wellbore instability. This paper presents an assessment of the mechanical stability of MPN`s wells offshore Nigeria. The objectives of the study were to: (1) determine the magnitude of the in-situ principal stresses and material properties of the troublesome Intra-Biafra and Qua Iboe shale sequences; (2) quantify the drilling fluid densities required to drill mechanically stable wells through these formations; (3) review and recommend well planning and operational parameters which aid in minimizing wellbore stability-related drilling problems. The well-bore stability assessment was carried out with the aid of a 3-dimensional wellbore stability model using field derived data from the study area to corroborate the results. The collection and analysis of drilling data (borehole geometry and density logs, pore pressure, leak-off tests, local geology and other relevant well records) to determine the magnitude of the in-situ principal stresses, together with compressive strength tests on formation cores are discussed. Minimum safe drilling fluid densities to promote wellbore stability as a function of well geometry and depth are presented for the most troublesome shales drilled in the study area. Implementation of the results reduced wellbore stability related problems and associated trouble time to less than 5% in 1992.

  1. QCD Level Density from Maximum Entropy Method

    E-Print Network [OSTI]

    Shinji Ejiri; Tetsuo Hatsuda

    2005-09-24T23:59:59.000Z

    We propose a method to calculate the QCD level density directly from the thermodynamic quantities obtained by lattice QCD simulations with the use of the maximum entropy method (MEM). Understanding QCD thermodynamics from QCD spectral properties has its own importance. Also it has a close connection to phenomenological analyses of the lattice data as well as experimental data on the basis of hadronic resonances. Our feasibility study shows that the MEM can provide a useful tool to study QCD level density.

  2. Tissue Radiation Response with Maximum Tsallis Entropy

    SciTech Connect (OSTI)

    Sotolongo-Grau, O.; Rodriguez-Perez, D.; Antoranz, J. C.; Sotolongo-Costa, Oscar [UNED, Departamento de Fisica Matematica y de Fluidos, 28040 Madrid (Spain); UNED, Departamento de Fisica Matematica y de Fluidos, 28040 Madrid (Spain) and University of Havana, Catedra de Sistemas Complejos Henri Poincare, Havana 10400 (Cuba); University of Havana, Catedra de Sistemas Complejos Henri Poincare, Havana 10400 (Cuba)

    2010-10-08T23:59:59.000Z

    The expression of survival factors for radiation damaged cells is currently based on probabilistic assumptions and experimentally fitted for each tumor, radiation, and conditions. Here, we show how the simplest of these radiobiological models can be derived from the maximum entropy principle of the classical Boltzmann-Gibbs expression. We extend this derivation using the Tsallis entropy and a cutoff hypothesis, motivated by clinical observations. The obtained expression shows a remarkable agreement with the experimental data found in the literature.

  3. A global maximum power point tracking DC-DC converter

    E-Print Network [OSTI]

    Duncan, Joseph, 1981-

    2005-01-01T23:59:59.000Z

    This thesis describes the design, and validation of a maximum power point tracking DC-DC converter capable of following the true global maximum power point in the presence of other local maximum. It does this without the ...

  4. Web tool for energy policy decision-making through geo-localized LCA models: A focus on offshore wind farms in Northern Europe

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . To illustrate this issue, a web map service enabling "geolocalized life cycle assessment" of offshore wind farms makers in assess- ing the global environmental impacts caused by an offshore wind farm in Northern Europe of configurations and locations of offshore wind farms. A special interest is given to Northern Europe as offshore

  5. OFFSHORE WAKE MEASUREMENTS USING A SODAR Luuk Folkerts, Jan Coelingh and Ernst van Zuylen, Ecofys bv, P.O. Box 8408, NL-3503 RK Utrecht,

    E-Print Network [OSTI]

    and evaluation of offshore wake models to improve the assessment of wind farm layout. 1 INTRODUCTION The wake in large offshore wind farms. The major objectives are to evaluate wake models in offshore environments to produce a design tool to assist planners and developers in optimising offshore wind farms. To provide

  6. 7th International Workshop on Large-Scale Integration of Wind Power and on Transmission Networks for Offshore Wind Farms Models for HLI analysis of power systems with

    E-Print Network [OSTI]

    Bak-Jensen, Birgitte

    for Offshore Wind Farms 1 Models for HLI analysis of power systems with offshore wind farms and distributed power plants, distributed generation and offshore wind farms. Particular attention is paid to the latter]-[4], but there is a lack of models of offshore wind farms, which introduce new issues for their representation, due to some

  7. \\\\server05\\productn\\C\\CJP\\14-1\\CJP102.txt unknown Seq: 1 24-FEB-05 17:48 REGULATING OFFSHORE WIND POWER AND

    E-Print Network [OSTI]

    Firestone, Jeremy

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 R C. DIFFERENCES IN THE E.U. AND U.S. WITH RESPECT TO OFFSHORE WIND FARMS\\\\server05\\productn\\C\\CJP\\14-1\\CJP102.txt unknown Seq: 1 24-FEB-05 17:48 REGULATING OFFSHORE WIND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 R A. OFFSHORE AQUACULTURE (MARICULTURE) . . . . . . . . . . . 74 R B. OFFSHORE WIND POWER

  8. articulatorily constrained maximum: Topics by E-print Network

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

    weight spanning forests. Amitabha Bagchi; Ankur Bhargava; Torsten Suel 2005-01-01 27 Maximum Entropy Correlated Equilibria MIT - DSpace Summary: We study maximum entropy...

  9. Change Number

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamos LaboratoryCertified Reference6-02-01Change Number

  10. Geomechanical Performance of Hydrate-Bearing Sediment in Offshore Environments

    SciTech Connect (OSTI)

    Stephen Holditch; Tad Patzek; Jonny Rutqvist; George Moridis; Richard Plumb

    2008-03-31T23:59:59.000Z

    The objective of this multi-year, multi-institutional research project was to develop the knowledge base and quantitative predictive capability for the description of geomechanical performance of hydrate-bearing sediments (hereafter referred to as HBS) in oceanic environments. The focus was on the determination of the envelope of hydrate stability under conditions typical of those related to the construction and operation of offshore platforms. We have developed a robust numerical simulator of hydrate behavior in geologic media by coupling a reservoir model with a commercial geomechanical code. We also investigated the geomechanical behavior of oceanic HBS using pore-scale models (conceptual and mathematical) of fluid flow, stress analysis, and damage propagation. The objective of the UC Berkeley work was to develop a grain-scale model of hydrate-bearing sediments. Hydrate dissociation alters the strength of HBS. In particular, transformation of hydrate clusters into gas and liquid water weakens the skeleton and, simultaneously, reduces the effective stress by increasing the pore pressure. The large-scale objective of the study is evaluation of geomechanical stability of offshore oil and gas production infrastructure. At Lawrence Berkeley National Laboratory (LBNL), we have developed the numerical model TOUGH + Hydrate + FLAC3D to evaluate how the formation and disassociation of hydrates in seafloor sediments affects seafloor stability. Several technical papers were published using results from this model. LBNL also developed laboratory equipment and methods to produce realistic laboratory samples of sediments containing gas hydrates so that mechanical properties could be measured in the laboratory. These properties are required to run TOUGH + Hydrate + FLAC3D to evaluate seafloor stability issues. At Texas A&M University we performed a detailed literature review to determine what gas hydrate formation properties had been measured and reported in the literature. We then used TOUGH + Hydrate to simulate the observed gas production and reservoir pressure field data at Messoyakha. We simulated various scenarios that help to explain the field behavior. We have evaluated the effect of reservoir parameters on gas recovery from hydrates. Our work should be beneficial to others who are investigating how to produce gas from a hydrate capped gas reservoir. The results also can be used to better evaluate the process of producing gas from offshore hydrates. The Schlumberger PETREL model is used in industry to the description of geologic horizons and the special distribution of properties. An interface between FLAC3D and Petrel was built by Schlumberger to allow for efficient data entry into TOUGH + Hydrate + FLAC3D.

  11. Conductivity maximum in a charged colloidal suspension

    SciTech Connect (OSTI)

    Bastea, S

    2009-01-27T23:59:59.000Z

    Molecular dynamics simulations of a charged colloidal suspension in the salt-free regime show that the system exhibits an electrical conductivity maximum as a function of colloid charge. We attribute this behavior to two main competing effects: colloid effective charge saturation due to counterion 'condensation' and diffusion slowdown due to the relaxation effect. In agreement with previous observations, we also find that the effective transported charge is larger than the one determined by the Stern layer and suggest that it corresponds to the boundary fluid layer at the surface of the colloidal particles.

  12. Effect of Second-Order Hydrodynamics on a Floating Offshore Wind Turbine

    SciTech Connect (OSTI)

    Roald, L.; Jonkman, J.; Robertson, A.

    2014-05-01T23:59:59.000Z

    The design of offshore floating wind turbines uses design codes that can simulate the entire coupled system behavior. At the present, most codes include only first-order hydrodynamics, which induce forces and motions varying with the same frequency as the incident waves. Effects due to second- and higher-order hydrodynamics are often ignored in the offshore industry, because the forces induced typically are smaller than the first-order forces. In this report, first- and second-order hydrodynamic analysis used in the offshore oil and gas industry is applied to two different wind turbine concepts--a spar and a tension leg platform.

  13. Potential Economic Impacts from Offshore Wind in the Gulf of Mexico Region (Fact Sheet)

    SciTech Connect (OSTI)

    Flores, F.; Keyser, D.; Tegen, S.

    2014-01-01T23:59:59.000Z

    Offshore wind is a clean, renewable source of energy and can be an economic driver in the United States. To better understand the employment opportunities and other potential regional economic impacts from offshore wind development, the U.S. Department of Energy (DOE) funded research that focuses on four regions of the country. The studies use multiple scenarios with various local job and domestic manufacturing content assumptions. Each regional study uses the new offshore wind Jobs and Economic Development Impacts (JEDI) model, developed by the National Renewable Energy Laboratory. This fact sheet summarizes the potential economic impacts for the Gulf of Mexico region.

  14. Potential Economic Impacts from Offshore Wind in the Great Lakes Region (Fact Sheet)

    SciTech Connect (OSTI)

    Tegen, S.; Keyser, D.

    2014-01-01T23:59:59.000Z

    Offshore wind is a clean, renewable source of energy and can be an economic driver in the United States. To better understand the employment opportunities and other potential regional economic impacts from offshore wind development, the U.S. Department of Energy (DOE) funded research that focuses on four regions of the country. The studies use multiple scenarios with various local job and domestic manufacturing content assumptions. Each regional study uses the new offshore wind Jobs and Economic Development Impacts (JEDI) model, developed by DOE's National Renewable Energy Laboratory. This fact sheet summarizes the potential economic impacts identified by the study for the Great Lakes region.

  15. Potential Economic Impacts from Offshore Wind in the Mid-Atlantic Region (Fact Sheet)

    SciTech Connect (OSTI)

    Keyser, D.; Tegen, S.; Flores, F.; Zammit, D.; Kraemer, M.; Miles, J.

    2014-01-01T23:59:59.000Z

    Offshore wind is a clean, renewable source of energy and can be an economic driver in the United States. To better understand the employment opportunities and other potential regional economic impacts from offshore wind development, the U.S. Department of Energy (DOE) funded research that focuses on four regions of the country. The studies use multiple scenarios with various local job and domestic manufacturing content assumptions. Each regional study uses the new offshore wind Jobs and Economic Development Impacts (JEDI) model, developed by the National Renewable Energy Laboratory. This fact sheet summarizes the potential economic impacts for the Mid-Atlantic region.

  16. Geological history of the west Libyan offshore and adjoining regions

    SciTech Connect (OSTI)

    Benniran, M.M.; Taleb, T.M.; McCrossan, R.G.

    1988-08-01T23:59:59.000Z

    The continental margin of the African plate north of Libya is separated from the Saharan platform to the south by a major Variscan fault system running along the coastline. The structural evolution of three sedimentary basins within the margin is discussed. The Jeffara basin, onshore western Libya-southern Tunisia, formed as a right-lateral pull-part late in the Variscan event. When the strike-slip motion ceased in the Late Permian, the basin continued to subside thermally. The Sabratah (Tripolitanian) basin, offshore western Libya-southern Tunisia, and the Benghazi basin in the Sirte rise were both formed as left-lateral pull-aparts in the Late Triassic-Early Jurassic. From the Middle Jurassic to the present they have subsided thermally. Onshore the lower Mesozoic is characterized by continental and nearshore clastics, separated by an evaporite sequence of Late Triassic-Early Jurassic age. Offshore this sequence is thought to grade northward into open marine carbonates. Uplift along the edge of the Saharan platform during the Early Cretaceous sourced coarse clastics, which grade northward into a thick sequence of shallow-water carbonates. Throughout the Late Cretaceous and early Tertiary, high-energy carbonates were deposited around the flanks of the Sabratah basin, grading into deeper-water, fine-grained clastics and carbonates toward the center of the basin. The late Tertiary succession is dominated by clastics derived from the growing Tellian Atlas to the northwest. During the Mesozoic and Tertiary a thick sequence of carbonates was deposited on the Pelagian platform to the north of the Sabratah basin. Periodically the platform was exposed subaerially.

  17. Alaska Maximum Number of Active Crews Engaged in Four-Dimensional Seismic

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at Commercial andSeptemberProcessedDecade Year-0 Year-1Foot)

  18. Alaska Maximum Number of Active Crews Engaged in Three-Dimensional Seismic

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40Coal Stocks at Commercial andSeptemberProcessedDecade Year-0

  19. U.S. Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb Mar Apr MayNov-142,234CubicSeismic Surveying

  20. U.S.Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecadeFour-Dimensional Seismic Surveying

  1. U.S.Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecadeFour-Dimensional Seismic

  2. U.S.Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto17 34 44Year Jan Feb MarDecadeFour-Dimensional SeismicTwo-Dimensional

  3. Alaska Maximum Number of Active Crews Engaged in Four-Dimensional Seismic

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Building Floorspace (Square Feet)SalesYear Jan Feb2009 2010 2011 2012 20130 0

  4. Alaska Maximum Number of Active Crews Engaged in Three-Dimensional Seismic

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Building Floorspace (Square Feet)SalesYear Jan Feb2009 2010 2011 2012 20130

  5. Alaska Maximum Number of Active Crews Engaged in Two-Dimensional Seismic

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Building Floorspace (Square Feet)SalesYear Jan Feb2009 2010 2011 2012

  6. U.S. Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet) U.S.Developmental WellsYear Jan FebYear JanSeismic

  7. U.S.Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet)Year Jan Feb MonthlyFour-Dimensional Seismic

  8. U.S.Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet)Year Jan Feb MonthlyFour-Dimensional

  9. U.S.Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion Cubic Feet)Year Jan Feb MonthlyFour-DimensionalTwo-Dimensional

  10. Assessment of Offshore Wind Energy Leasing Areas for the BOEM Massachusetts Wind Energy Area

    SciTech Connect (OSTI)

    Musial, W.; Parker, Z.; Fields, M.; Scott, G.; Elliott, D.; Draxl, C.

    2013-12-01T23:59:59.000Z

    The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL), under an interagency agreement with the Bureau of Ocean Energy Management (BOEM), is providing technical assistance to identify and delineate leasing areas for offshore wind energy development within the Atlantic Coast Wind Energy Areas (WEAs) established by BOEM. This report focuses on NREL's development of three delineated leasing area options for the Massachusetts (MA) WEA and the technical evaluation of these leasing areas. The overarching objective of this study is to develop a logical process by which the MA WEA can be subdivided into non-overlapping leasing areas for BOEM's use in developing an auction process in a renewable energy lease sale. NREL worked with BOEM to identify an appropriate number of leasing areas and proposed three delineation alternatives within the MA WEA based on the boundaries announced in May 2012. A primary output of the interagency agreement is this report, which documents the methodology, including key variables and assumptions, by which the leasing areas were identified and delineated.

  11. Quantum maximum entropy principle for a system of identical particles

    SciTech Connect (OSTI)

    Trovato, M. [Dipartimento di Matematica, Universita di Catania, Viale A. Doria, 95125 Catania (Italy); Reggiani, L. [Dipartimento di Ingegneria dell' Innovazione and CNISM, Universita del Salento, Via Arnesano s/n, 73100 Lecce (Italy)

    2010-02-15T23:59:59.000Z

    By introducing a functional of the reduced density matrix, we generalize the definition of a quantum entropy which incorporates the indistinguishability principle of a system of identical particles. With the present definition, the principle of quantum maximum entropy permits us to solve the closure problem for a quantum hydrodynamic set of balance equations corresponding to an arbitrary number of moments in the framework of extended thermodynamics. The determination of the reduced Wigner function for equilibrium and nonequilibrium conditions is found to become possible only by assuming that the Lagrange multipliers can be expanded in powers of (Planck constant/2pi){sup 2}. Quantum contributions are expressed in powers of (Planck constant/2pi){sup 2} while classical results are recovered in the limit (Planck constant/2pi)->0.

  12. Contested seascapes : space-related conflicts over offshore wind farms in Scotland and Germany 

    E-Print Network [OSTI]

    Rudolph, David Philipp

    2013-11-28T23:59:59.000Z

    Offshore wind farms are widely considered to become a cornerstone of energy transition for securing energy supply and tackling climate change simultaneously. But recent developments have demonstrated that the siting of ...

  13. Challenges in Simulation of Aerodynamics, Hydrodynamics, and Mooring-Line Dynamics of Floating Offshore Wind Turbines

    SciTech Connect (OSTI)

    Matha, D.; Schlipf, M.; Cordle, A.; Pereira, R.; Jonkman, J.

    2011-10-01T23:59:59.000Z

    This paper presents the current major modeling challenges for floating offshore wind turbine design tools and describes aerodynamic and hydrodynamic effects due to rotor and platform motions and usage of non-slender support structures.

  14. Stakeholder Engagement and Outreach Webinar: Jobs and Economic Development Impacts of Offshore Wind

    Office of Energy Efficiency and Renewable Energy (EERE)

    Starting more than a year ago, NREL initiated work to expand the Jobs and Economic Development Impacts (JEDI) model to include fixed-bottom offshore wind technology. Following the completion of the...

  15. Systematic prioritization of considerations in making offshore software development outsourcing decisions

    E-Print Network [OSTI]

    Kim, Bo S. (Bo Sung)

    2005-01-01T23:59:59.000Z

    Offshore outsourcing of software development projects has become increasingly prevalent over the past decade. In order to avoid potential pitfalls in outsourcing, companies must carefully select who to outsource to. Although ...

  16. activity-based costing offshore: Topics by E-print Network

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

    Caledonia Louis Geli Paris-Sud XI, Universit de 393 OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY Renewable Energy Websites Summary:...

  17. Monitoring and Mitigation Alternatives for Protection of North Atlantic Right Whales during Offshore Wind Farm Installation

    SciTech Connect (OSTI)

    Carlson, Thomas J.; Halvorsen, Michele B.; Matzner, Shari; Copping, Andrea E.; Stavole, Jessica

    2012-09-01T23:59:59.000Z

    Progress report on defining and determining monitoring and mitigation measures for protecting North Atlantic Right Whales from the effects of pile driving and other activities associated with installation of offshore wind farms.

  18. The impact of manufacturing offshore on technology development paths in the automotive and optoelectronics industries

    E-Print Network [OSTI]

    Fuchs, Erica R. H. (Erica Renee H.), 1977-

    2006-01-01T23:59:59.000Z

    This dissertation presents a two-case study of the impact of manufacturing offshore on the technology trajectory of the firm and the industry. It looks in particular at the automotive and optoelectronics industries. The ...

  19. A Probabilistic Deformation Demand Model and Fragility Estimates for Asymmetric Offshore Jacket Platforms

    E-Print Network [OSTI]

    Fallon, Michael Brooks

    2012-11-12T23:59:59.000Z

    to assess the deformation demand on asymmetric offshore jacket platforms subject to wave and current loadings. The probabilistic model is constructed by adding correction terms and a model error to an existing deterministic deformation demand model...

  20. Seismic amplitude and coherency response of channel sand, offshore Louisiana, Gulf of Mexico

    E-Print Network [OSTI]

    Fischer, Elena Mikhaylovna

    1999-01-01T23:59:59.000Z

    Geological drilling hazards are a major concern in the ics. drilling and development of offshore reservoirs. Some of these hazards may display high amplitudes on seismic profiles and some may be associated with stratigraphic features. Seismic...

  1. Evaluating permeability anisotropy in the early Jurassic Tilje formation, offshore mid-Norway

    E-Print Network [OSTI]

    Aliyev, Kanan

    2005-11-01T23:59:59.000Z

    The problem of evaluating permeability anisotropy in the Tilje Formation, Heidrum field, offshore mid-Norway, has been investigated by the Statoil Research Centre by a detailed combination of the geological and petrophysical data. The large...

  2. Numerical Methods in Offshore Geotechnics: Applications to Submarine Landslides and Anchor Plates

    E-Print Network [OSTI]

    Nouri, Hamid Reza

    2013-05-08T23:59:59.000Z

    combined shear and torsion. Plate anchors are increasingly being used instead of typical foundation systems to anchor offshore floating platforms to sustain uplift operating forces. However extreme loading cases would create general loading conditions...

  3. Definition of a 5-MW Reference Wind Turbine for Offshore System Development

    SciTech Connect (OSTI)

    Jonkman, J.; Butterfield, S.; Musial, W.; Scott, G.

    2009-02-01T23:59:59.000Z

    This report describes a three-bladed, upwind, variable-speed, variable blade-pitch-to-feather-controlled multimegawatt wind turbine model developed by NREL to support concept studies aimed at assessing offshore wind technology.

  4. Loads Analysis of a Floating Offshore Wind Turbine Using Fully Coupled Simulation: Preprint

    SciTech Connect (OSTI)

    Jonkman, J. M.; Buhl, M. L., Jr.

    2007-06-01T23:59:59.000Z

    This paper presents the use of fully coupled aero-hydro-servo-elastic simulation tools to perform a loads analysis of a 5-MW offshore wind turbine supported by a barge with moorings, one of many promising floating platform concepts.

  5. Design Considerations for Monopile Founded Offshore Wind Turbines Subject to Breaking Waves

    E-Print Network [OSTI]

    Owens, Garrett Reese 1987-

    2012-11-26T23:59:59.000Z

    The majority of offshore wind farms utilize monopile substructures. As these wind farms are typically located in water depths less than 30 meters, the effect of breaking waves on these structures is of great concern to design engineers...

  6. Multibody Dynamics Using Conservation of Momentum with Application to Compliant Offshore Floating Wind Turbines

    E-Print Network [OSTI]

    Wang, Lei

    2012-10-19T23:59:59.000Z

    Environmental, aesthetic and political pressures continue to push for siting off-shore wind turbines beyond sight of land, where waters tend to be deeper, and use of floating structures is likely to be considered. Savings could potentially...

  7. Pliocene to recent stratigraphy of the Cuu Long and Nam Con Son Basins, offshore Vietnam

    E-Print Network [OSTI]

    Yarbrough, Christopher Neil

    2006-08-16T23:59:59.000Z

    The Cuu Long and Nam Con Basins, offshore Vietnam, contain sediment dispersal systems, from up-dip fluvial environments to down-dip deep-water slope and basinal environments that operated along the southern continental margin of Vietnam during...

  8. Soil-Spring Model for Fatigue Evaluation of Cyclic-Loaded Offshore Conductors

    E-Print Network [OSTI]

    Ilupeju, Olusola Ayandire

    2014-05-01T23:59:59.000Z

    more important. Design considerations and methodology for dealing with conductors and piles subjected to cyclic lateral loads, have been based on modifications to formulations for monotonic loads. Soil-structure interaction problems involving offshore...

  9. Labor arbitrage : impact of offshoring in the U.S. labor market

    E-Print Network [OSTI]

    Malibran, Jorge (Malibran Ángel)

    2013-01-01T23:59:59.000Z

    The rapid growth of offshoring has ignited a contentious debate over its impact on the US labor market. Between 1983 and 2002, the United States economy lost 6 million jobs in manufacturing and income inequality increased ...

  10. Design Considerations for Monopile Founded Offshore Wind Turbines Subject to Breaking Waves 

    E-Print Network [OSTI]

    Owens, Garrett Reese 1987-

    2012-11-26T23:59:59.000Z

    The majority of offshore wind farms utilize monopile substructures. As these wind farms are typically located in water depths less than 30 meters, the effect of breaking waves on these structures is of great concern to design engineers...

  11. A nonlinear wave load model for extreme and fatigue responses of offshore floating wind turbines

    E-Print Network [OSTI]

    Lee, Sungho, Ph. D. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    Ocean energy is one of the most important sources of alternative energy and offshore floating wind turbines are considered viable and economical means of harnessing ocean energy. The accurate prediction of nonlinear ...

  12. Multibody Dynamics Using Conservation of Momentum with Application to Compliant Offshore Floating Wind Turbines 

    E-Print Network [OSTI]

    Wang, Lei

    2012-10-19T23:59:59.000Z

    Environmental, aesthetic and political pressures continue to push for siting off-shore wind turbines beyond sight of land, where waters tend to be deeper, and use of floating structures is likely to be considered. Savings could potentially...

  13. Maximum screening fields of superconducting multilayer structures

    E-Print Network [OSTI]

    Gurevich, Alex

    2015-01-01T23:59:59.000Z

    It is shown that a multilayer comprised of alternating thin superconducting and insulating layers on a thick substrate can fully screen the applied magnetic field exceeding the superheating fields $H_s$ of both the superconducting layers and the substrate, the maximum Meissner field is achieved at an optimum multilayer thickness. For instance, a dirty layer of thickness $\\sim 0.1\\; \\mu$m at the Nb surface could increase $H_s\\simeq 240$ mT of a clean Nb up to $H_s\\simeq 290$ mT. Optimized multilayers of Nb$_3$Sn, NbN, some of the iron pnictides, or alloyed Nb deposited onto the surface of the Nb resonator cavities could potentially double the rf breakdown field, pushing the peak accelerating electric fields above 100 MV/m while protecting the cavity from dendritic thermomagnetic avalanches caused by local penetration of vortices.

  14. Dredged-material disposal and total suspended matter offshore from Galveston, Texas

    E-Print Network [OSTI]

    Cool, Thomas Edward

    1976-01-01T23:59:59.000Z

    wind speed and direction for the two week period of 11 October to 26 October, 1975 at Buoy D. Map of the bathymetry of the offshore disposal site (run in April, 1975). Erosion, transportation and deposition criteria for different grain sizes...DREDGED-MATERIAL DISPOSAL AND TOTAL SUSPENDED MATTER OFFSHORE FROM GALVESTON, TEXAS A Thesis by Thomas Edward Cool Submitted to the Graduate College of Texas ARM University in partial fulfillment of the requirement for the degree of MASTER...

  15. An experimental investigation of sediment drag forces on offshore pipelines in large scale drag tank

    E-Print Network [OSTI]

    Yin, Stanley Fuming

    1984-01-01T23:59:59.000Z

    for the degree of MASTER OF SCIENCE August 1984 Major Subject: Civil Engineering AN EXPERIMENTAL INVESTIGATION OF SEDIMENT DRAG FORCES ON OFFSHORE PIPELINES IN A LARGE SCALE DRAG TANK A Thesis by STANLEY FUMING YIN Approved as to style and content by... An ever increasing demand for petroleum products and energy has led to accelerated exploration and development of oil and gas deposits. Pipelines serve as an effective, efficient and reliable means of trans- porting the oil and gas from offshore...

  16. Review of technology for Arctic offshore oil and gas recovery. Appendices

    SciTech Connect (OSTI)

    Sackinger, W. M.

    1980-06-06T23:59:59.000Z

    This volume contains appendices of the following: US Geological Survey Arctic operating orders, 1979; Det Noske Vertas', rules for the design, construction and inspection of offshore technology, 1977; Alaska Oil and Gas Association, industry research projects, March 1980; Arctic Petroleum Operator's Association, industry research projects, January 1980; selected additional Arctic offshore bibliography on sea ice, icebreakers, Arctic seafloor conditions, ice-structures, frost heave and structure icing.

  17. Structural and depositional evolution, KH field, West Natuna Basin, offshore Indonesia 

    E-Print Network [OSTI]

    Meirita, Maria Fransisca

    2004-09-30T23:59:59.000Z

    STRUCTURAL AND DEPOSITIONAL EVOLUTION, KH FIELD, WEST NATUNA BASIN, OFFSHORE INDONESIA A Thesis by MARIA FRANSISCA MEIRITA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 2003 Major Subject: Geophysics STRUCTURAL AND DEPOSITIONAL EVOLUTION, KH FIELD, WEST NATUNA BASIN, OFFSHORE INDONESIA A Thesis by MARIA FRANSISCA MEIRITA...

  18. Structural and depositional evolution, KH field, West Natuna Basin, offshore Indonesia

    E-Print Network [OSTI]

    Meirita, Maria Fransisca

    2004-09-30T23:59:59.000Z

    STRUCTURAL AND DEPOSITIONAL EVOLUTION, KH FIELD, WEST NATUNA BASIN, OFFSHORE INDONESIA A Thesis by MARIA FRANSISCA MEIRITA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 2003 Major Subject: Geophysics STRUCTURAL AND DEPOSITIONAL EVOLUTION, KH FIELD, WEST NATUNA BASIN, OFFSHORE INDONESIA A Thesis by MARIA FRANSISCA MEIRITA...

  19. The validity of analytical methods for predicting self burial of offshore pipelines 

    E-Print Network [OSTI]

    Hamilton, Thomas Kenwood

    1977-01-01T23:59:59.000Z

    THE VALIDITY OF ANALYTICAL METHODS FOR PREDICTING SELF BURIAL OF OFFSHORE PIPELINES A Thesis by THOMAS KENWOOD HAMILTON Submitted to the Graduate College of Texas AEM University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE August 1977 Major Subject: Civil Engineering THE VALIDITY OF ANALYTICAL METHODS FOR PREDICTING SELF BURIAL OF OFFSHORE PIPELINES A Thesis by THOMAS KENWOOD HAMILTON Approved as to style and content by: Harry M. Coyle - Chairman...

  20. Comparisons on offshore structure responses to random waves using linear and high-order wave theories

    E-Print Network [OSTI]

    Ramos Heredia, Rafael Juda

    1995-01-01T23:59:59.000Z

    the first time I met him. I would also like to convey my appreciation to my sponsor, Instituto Mexicano del Petroleo, and to the Offshore Technology Research Center for providing the experimental data contained in this work. Special thanks go to Dr. John M... of the Department) May 1995 Major Subject: Ocean Engineering Comparisons on Offshore Structure Responses to Random Waves Using Linear and High-order Wave Theories. (May 1995) Refuel Juda Ramos Heredia, B. S. , Instituto Politecnico Nacional, Mexico City Chair...

  1. Jobs and Economic Development Impact (JEDI) Model: Offshore Wind User Reference Guide

    SciTech Connect (OSTI)

    Lantz, E.; Goldberg, M.; Keyser, D.

    2013-06-01T23:59:59.000Z

    The Offshore Wind Jobs and Economic Development Impact (JEDI) model, developed by NREL and MRG & Associates, is a spreadsheet based input-output tool. JEDI is meant to be a user friendly and transparent tool to estimate potential economic impacts supported by the development and operation of offshore wind projects. This guide describes how to use the model as well as technical information such as methodology, limitations, and data sources.

  2. World Energy Congress, Sydney, Australia September 5-9, 2004 OFFSHORE WIND POWER: EASING A RENEWABLE

    E-Print Network [OSTI]

    of wind energy are discussed. 2. Offshore wind energy potential Le potentiel de l'énergie éolienne When.0 0.2 0.4 0.6 0.8 1.0 1.2 Relativeenergy onshoreoffshore Figure 1: Wind energy potential at height 10019 th World Energy Congress, Sydney, Australia September 5-9, 2004 1 OFFSHORE WIND POWER: EASING

  3. Offshore Wind Plant Balance-of-Station Cost Drivers and Sensitivities (Poster)

    SciTech Connect (OSTI)

    Saur, G.; Maples, B.; Meadows, B.; Hand, M.; Musial, W.; Elkington, C.; Clayton, J.

    2012-09-01T23:59:59.000Z

    With Balance of System (BOS) costs contributing up to 70% of the installed capital cost, it is fundamental to understanding the BOS costs for offshore wind projects as well as potential cost trends for larger offshore turbines. NREL developed a BOS model using project cost estimates developed by GL Garrad Hassan. Aspects of BOS covered include engineering and permitting, ports and staging, transportation and installation, vessels, foundations, and electrical. The data introduce new scaling relationships for each BOS component to estimate cost as a function of turbine parameters and size, project parameters and size, and soil type. Based on the new BOS model, an analysis to understand the non-turbine costs associated with offshore turbine sizes ranging from 3 MW to 6 MW and offshore wind plant sizes ranging from 100 MW to 1000 MW has been conducted. This analysis establishes a more robust baseline cost estimate, identifies the largest cost components of offshore wind project BOS, and explores the sensitivity of the levelized cost of energy to permutations in each BOS cost element. This presentation shows results from the model that illustrates the potential impact of turbine size and project size on the cost of energy from US offshore wind plants.

  4. Effects of Second-Order Hydrodynamic Forces on Floating Offshore Wind Turbines

    SciTech Connect (OSTI)

    Duarte, T.; Sarmento, A. J. N. A.; Jonkman, J.

    2014-04-01T23:59:59.000Z

    Relative to first-order, second-order wave-excitation loads are known to cause significant motions and additional loads in offshore oil and gas platforms. The design of floating offshore wind turbines was partially inherited from the offshore oil and gas industry. Floating offshore wind concepts have been studied with powerful aero-hydro-servo-elastic tools; however, most of the existing work on floating offshore wind turbines has neglected the contribution of second-order wave-excitation loads. As a result, this paper presents a computationally efficient methodology to consider these loads within FAST, a wind turbine computer-aided engineering tool developed by the National Renewable Energy Laboratory. The method implemented was verified against the commercial OrcaFlex tool, with good agreement, and low computational time. A reference floating offshore wind turbine was studied under several wind and wave load conditions, including the effects of second-order slow-drift and sum-frequency loads. Preliminary results revealed that these loads excite the turbine's natural frequencies, namely the surge and pitch natural frequencies.

  5. Offshore Wind Energy Permitting: A Survey of U.S. Project Developers

    SciTech Connect (OSTI)

    Van Cleve, Frances B.; Copping, Andrea E.

    2010-11-30T23:59:59.000Z

    The U.S. Department of Energy (DOE) has adopted a goal to generate 20% of the nation’s electricity from wind power by 2030. Achieving this “20% Wind Scenario” in 2030 requires acceleration of the current rate of wind project development. Offshore wind resources contribute substantially to the nation’s wind resource, yet to date no offshore wind turbines have been installed in the U.S. Progress developing offshore wind projects has been slowed by technological challenges, uncertainties about impacts to the marine environment, siting and permitting challenges, and viewshed concerns. To address challenges associated with siting and permitting, Pacific Northwest National Laboratory (PNNL) surveyed offshore wind project developers about siting and project development processes, their experience with the environmental permitting process, and the role of coastal and marine spatial planning (CMSP) in development of the offshore wind industry. Based on the responses to survey questions, we identify several priority recommendations to support offshore wind development. Recommendations also include considerations for developing supporting industries in the U.S. and how to use Coastal and Marine Spatial Planning (CMSP) to appropriately consider ocean energy among existing ocean uses. In this report, we summarize findings, discuss the implications, and suggest actions to improve the permitting and siting process.

  6. Environmental Risk Evaluation System (ERES) for Offshore Wind - Mock-Up of ERES, Fiscal Year 2010 Progress Report

    SciTech Connect (OSTI)

    Anderson, Richard M.; Copping, Andrea E.; Van Cleve, Frances B.

    2010-11-01T23:59:59.000Z

    The Environmental Risk Evaluation System (ERES) has been created to set priorities among the environmental risks from offshore wind development. This report follows the conceptual design for ERES and shows what the system would look like, using a web interface created as part of a Knowledge Management System (KMS) for offshore wind. The KMS, called Zephyrus, and ERES for offshore wind, will be populated and made operational in a later phase of the project.

  7. Maximum Entropy Method Approach to $?$ Term

    E-Print Network [OSTI]

    Masahiro Imachi; Yasuhiko Shinno; Hiroshi Yoneyama

    2004-06-09T23:59:59.000Z

    In Monte Carlo simulations of lattice field theory with a $\\theta$ term, one confronts the complex weight problem, or the sign problem. This is circumvented by performing the Fourier transform of the topological charge distribution $P(Q)$. This procedure, however, causes flattening phenomenon of the free energy $f(\\theta)$, which makes study of the phase structure unfeasible. In order to treat this problem, we apply the maximum entropy method (MEM) to a Gaussian form of $P(Q)$, which serves as a good example to test whether the MEM can be applied effectively to the $\\theta$ term. We study the case with flattening as well as that without flattening. In the latter case, the results of the MEM agree with those obtained from the direct application of the Fourier transform. For the former, the MEM gives a smoother $f(\\theta)$ than that of the Fourier transform. Among various default models investigated, the images which yield the least error do not show flattening, although some others cannot be excluded given the uncertainty related to statistical error.

  8. Maximum Throughput Power Control in CDMA Wireless Networks

    E-Print Network [OSTI]

    Mellor-Crummey, John

    Maximum Throughput Power Control in CDMA Wireless Networks Anastasios Giannoulis Department introduce cross­layer, distributed power control algorithms that guarantee maximum possible data throughput performing dynamic routing and scheduling together with power control. The cross­layer interaction consists

  9. Architecture of Planetary Systems Based on Kepler Data: Number of Planets and Coplanarity

    E-Print Network [OSTI]

    Fang, Julia; Margot, Jean-Luc

    2012-01-01T23:59:59.000Z

    the mean number of planets per system. For BU. ,which the maximum number of planets is drawn. This plot cany-axis has the number of planets per system increasing to

  10. Canadian offshore oil production solution gas utilization alternatives

    SciTech Connect (OSTI)

    Wagner, J.V.

    1999-07-01T23:59:59.000Z

    Oil and gas development in the Province of Newfoundland and Labrador is in its early stage and the offshore industry emphasis is almost exclusively on oil production. At the Hibernia field, the Gravity Base Structure (GBS) is installed and the first wells are in production. The Terra Nova project, based on a Floating Production Storage Offloading (FPSO) ship shaped concept, is in its engineering and construction stage and first oil is expected by late 2000. Several other projects, such as Husky's White Rose and Chevron's Hebron, have significant potential for future development in the same area. It is highly probably that these projects will employ the FPSO concept. It is also expected that the solution gas disposal issues of such second generation projects will be of more significance in their regulatory approval process and of such second generation projects will be of more significance in their regulatory approval process and the operators may be forced to look for alternatives to gas reinjection. Three gas utilization alternatives for a FPSO concept based project have been considered and evaluated in this paper: liquefied natural gas (LNG), compressed natural gas (CNG), and gas-to-liquids conversion (GTL). The evaluation and the relative ranking of these alternatives is based on a first pass screening type of study which considers the technical and economical merits of each alternative. Publicly available information and in-house data, compiled within Fluor Daniel's various offices, was used to establish the basic parameters.

  11. Improved Offshore Wind Resource Assessment in Global Climate Stabilization Scenarios

    SciTech Connect (OSTI)

    Arent, D.; Sullivan, P.; Heimiller, D.; Lopez, A.; Eurek, K.; Badger, J.; Jorgensen, H. E.; Kelly, M.; Clarke, L.; Luckow, P.

    2012-10-01T23:59:59.000Z

    This paper introduces a technique for digesting geospatial wind-speed data into areally defined -- country-level, in this case -- wind resource supply curves. We combined gridded wind-vector data for ocean areas with bathymetry maps, country exclusive economic zones, wind turbine power curves, and other datasets and relevant parameters to build supply curves that estimate a country's offshore wind resource defined by resource quality, depth, and distance-from-shore. We include a single set of supply curves -- for a particular assumption set -- and study some implications of including it in a global energy model. We also discuss the importance of downscaling gridded wind vector data to capturing the full resource potential, especially over land areas with complex terrain. This paper includes motivation and background for a statistical downscaling methodology to account for terrain effects with a low computational burden. Finally, we use this forum to sketch a framework for building synthetic electric networks to estimate transmission accessibility of renewable resource sites in remote areas.

  12. Development of Sockeye field in offshore California - A case history

    SciTech Connect (OSTI)

    Sankur, V. (Chevron, USA, Inc., La Habra, CA (United States))

    1991-02-01T23:59:59.000Z

    Sockeye field, discovered in 1970, lies offshore California in the Santa Barbara Channel. The decision to develop the field was made in 1983 based on 1979-1983 exploration drilling. Platform Gail was installed in 1987 and development drilling commenced in June 1988. Currently, there are eleven single completions. The field produces from five reservoirs: middle and upper Sespe Sands, lower and upper Topanga Sands, and the Monterey Formation. Sespe Sands are fluvial channel deposits with individual sand bodies with limited areal extents. The middle Sespe produces dry sweet gas and the upper Sespe produces sweet 29{degree} API gravity oil. The Topanga Sands were deposited in a near shore environment and are more continuous in nature. Lower Topanga Sands contain sweet oil whereas upper Topanga Sands test a low gravity 18{degree} API sour oil. The Monterey Formation is composed of thin beds of chert, porcellanites, siliceous shales, mudstones, and dolostones. The fractured Lower monterey produces heavy sour oil, similar to that of the upper Topanga. To minimize risk, delineation wells were drilled early in the development program to ensure that reserves warranted additional investment in wells and facilities. Nine wells were completed during the first phase of the drilling program. Gas production from these wells was projected to exceed the capacity of the Carpinteria gas modifications to handle production. At the conclusion of the evaluation, drilling was resumed with plans to drill four more wells.

  13. Offshore Code Comparison Collaboration, Continuation: Phase II Results of a Floating Semisubmersible Wind System: Preprint

    SciTech Connect (OSTI)

    Robertson, A.; Jonkman, J.; Musial, W.; Vorpahl, F.; Popko, W.

    2013-11-01T23:59:59.000Z

    Offshore wind turbines are designed and analyzed using comprehensive simulation tools that account for the coupled dynamics of the wind inflow, aerodynamics, elasticity, and controls of the turbine, along with the incident waves, sea current, hydrodynamics, and foundation dynamics of the support structure. The Offshore Code Comparison Collaboration (OC3), which operated under the International Energy Agency (IEA) Wind Task 23, was established to verify the accuracy of these simulation tools [1]. This work was then extended under the Offshore Code Comparison Collaboration, Continuation (OC4) project under IEA Wind Task 30 [2]. Both of these projects sought to verify the accuracy of offshore wind turbine dynamics simulation tools (or codes) through code-to-code comparison of simulated responses of various offshore structures. This paper describes the latest findings from Phase II of the OC4 project, which involved the analysis of a 5-MW turbine supported by a floating semisubmersible. Twenty-two different organizations from 11 different countries submitted results using 24 different simulation tools. The variety of organizations contributing to the project brought together expertise from both the offshore structure and wind energy communities. Twenty-one different load cases were examined, encompassing varying levels of model complexity and a variety of metocean conditions. Differences in the results demonstrate the importance and accuracy of the various modeling approaches used. Significant findings include the importance of mooring dynamics to the mooring loads, the role nonlinear hydrodynamic terms play in calculating drift forces for the platform motions, and the difference between global (at the platform level) and local (at the member level) modeling of viscous drag. The results from this project will help guide development and improvement efforts for these tools to ensure that they are providing the accurate information needed to support the design and analysis needs of the offshore wind community.

  14. GMM Estimation of a Maximum Entropy Distribution with Interval Data

    E-Print Network [OSTI]

    Perloff, Jeffrey M.

    GMM Estimation of a Maximum Entropy Distribution with Interval Data Ximing Wu* and Jeffrey M estimate it using a simple yet flexible maximum entropy density. Our Monte Carlo simulations show that the proposed maximum entropy density is able to approximate various distributions extremely well. The two

  15. Coastal Ohio Wind Project for Reduced Barriers to Deployment of Offshore Wind Energy

    SciTech Connect (OSTI)

    Gorsevski, Peter; Afjeh, Abdollah; Jamali, Mohsin; Carroll, Michael

    2014-04-09T23:59:59.000Z

    The Coastal Ohio Wind Project was created to establish the viability of wind turbines on the coastal and offshore regions of Northern Ohio. The project’s main goal was to improve operational unit strategies used for environmental impact assessment of offshore turbines on lake wildlife by optimizing and fusing data from the multi-instrument surveillance system and providing an engineering analysis of potential design/operational alternatives for offshore wind turbines. The project also developed a general economic model for offshore WTG deployment to quantify potential revenue losses due to wind turbine shutdown related to ice and avian issues. In a previous phase of this project (Award Number: DE-FG36-06GO86096), we developed a surveillance system that was used to collect different parameters such as passage rates, flight paths, flight directions, and flight altitudes of nocturnal migrating species, movements of birds and bats, and bird calls for assessing patterns and peak passage rates during migration. To derive such parameters we used thermal IR imaging cameras, acoustic recorders, and marine radar Furuno (XANK250), which was coupled with a XIR3000B digitizing card from Russell Technologies and open source radR processing software. The integration yielded a development of different computational techniques and methods, which we further developed and optimized as a combined surveillance system. To accomplish this task we implemented marine radar calibration, optimization of processing parameters, and fusion of the multi-sensor data in order to make inferences about the potential avian targets. The main goal of the data fusion from the multi-sensor environment was aimed at reduction of uncertainties while providing acceptable confidence levels with detailed information about the migration patterns. Another component comprised of an assessment of wind resources in a near lake environment and an investigation of the effectiveness of ice coating materials to mitigate adverse effects of ice formation on wind turbine structures. Firstly, a Zephir LiDAR system was acquired and installed at Woodlands School in Huron, Ohio, which is located near Lake Erie. Wind resource data were obtained at ten measurement heights, 200m, 150m, 100m, 80m, 60m, 40m, 38m, 30m, 20m, and 10m. The Woodlands School’s wind turbine anemometer also measured the wind speed at the hub height. These data were collected for approximately one year. The hub anemometer data correlated well with the LiDAR wind speed measurements at the same height. The data also showed that on several days different power levels were recorded by the turbine at the same wind speed as indicated by the hub anemometer. The corresponding LiDAR data showed that this difference can be attributed to variability in the wind over the turbine rotor swept area, which the hub anemometer could not detect. The observation suggests that single point hub wind velocity measurements are inadequate to accurately estimate the power generated by a turbine at all times since the hub wind speed is not a good indicator of the wind speed over the turbine rotor swept area when winds are changing rapidly. To assess the effectiveness of ice coatings to mitigate the impact of ice on turbine structures, a closed-loop icing research tunnel (IRT) was designed and constructed. By controlling the temperature, air speed, water content and liquid droplet size, the tunnel enabled consistent and repeatable ice accretion under a variety of conditions with temperatures between approximately 0°C and -20°C and wind speeds up to 40 miles per hour in the tunnel’s test section. The tunnel’s cooling unit maintained the tunnel temperature within ±0.2°C. The coatings evaluated in the study were Boyd Coatings Research Company’s CRC6040R3, MicroPhase Coatings Inc.’s PhaseBreak TP, ESL and Flex coatings. Similar overall performance was observed in all coatings tested in that water droplets form on the test articles beginning at the stagnation region and spreading in the downstream direction in time. When compari

  16. Effect of Second-Order Hydrodynamics on Floating Offshore Wind Turbines: Preprint

    SciTech Connect (OSTI)

    Roald, L.; Jonkman, J.; Robertson, A,; Chokani, N.

    2013-07-01T23:59:59.000Z

    Offshore winds are generally stronger and more consistent than winds on land, making the offshore environment attractive for wind energy development. A large part of the offshore wind resource is however located in deep water, where floating turbines are the only economical way of harvesting the energy. The design of offshore floating wind turbines relies on the use of modeling tools that can simulate the entire coupled system behavior. At present, most of these tools include only first-order hydrodynamic theory. However, observations of supposed second-order hydrodynamic responses in wave-tank tests performed by the DeepCwind consortium suggest that second-order effects might be critical. In this paper, the methodology used by the oil and gas industry has been modified to apply to the analysis of floating wind turbines, and is used to assess the effect of second-order hydrodynamics on floating offshore wind turbines. The method relies on combined use of the frequency-domain tool WAMIT and the time-domain tool FAST. The proposed assessment method has been applied to two different floating wind concepts, a spar and a tension-leg-platform (TLP), both supporting the NREL 5-MW baseline wind turbine. Results showing the hydrodynamic forces and motion response for these systems are presented and analysed, and compared to aerodynamic effects.

  17. Assessment of Ports for Offshore Wind Development in the United States

    SciTech Connect (OSTI)

    Elkinton, Chris [DNV GL] [DNV GL; Blatiak, Alicia; Ameen, Hafsa

    2014-03-21T23:59:59.000Z

    As offshore wind energy develops in the United States, port facilities will become strategic hubs in the offshore wind farm supply chain because all plant and transport logistics must transit through these facilities. Therefore, these facilities must provide suitable infrastructure to meet the specific requirements of the offshore wind industry. As a result, it is crucial that federal and state policy-makers and port authorities take effective action to position ports in the offshore wind value chain to take best advantage of their economic potential. The U.S. Department of Energy tasked the independent consultancy GL Garrad Hassan (GL GH) with carrying out a review of the current capability of U.S. ports to support offshore wind project development and an assessment of the challenges and opportunities related to upgrading this capability to support the growth of as many as 54 gigawatts of offshore wind installed in U.S. waters by 2030. The GL GH report and the open-access web-based Ports Assessment Tool resulting from this study will aid decision-makers in making informed decisions regarding the choice of ports for specific offshore projects, and the types of investments that would be required to make individual port facilities suitable to serve offshore wind manufacturing, installation and/or operations. The offshore wind industry in the United States is still in its infancy and this study finds that additional port facilities capable of supporting offshore wind projects are needed to meet the anticipated project build-out by 2030; however, no significant barriers exist to prevent the development of such facilities. Furthermore, significant port capabilities are in place today with purpose-build port infrastructure currently being built. While there are currently no offshore wind farms operating in the United States, much of the infrastructure critical to the success of such projects does exist, albeit in the service of other industries. This conclusion is based on GL GH’s review of U.S. ports infrastructure and its readiness to support the development of proposed offshore wind projects in U.S. waters. Specific examples of facility costs and benefits are provided for five coastal regions (North Atlantic, South Atlantic, Gulf of Mexico, Great Lakes, and Pacific) around the country. GL GH began this study by identifying the logistical requirements of offshore wind ports to service offshore wind. This review was based on lessons learned through industry practice in Northern Europe. A web-based port readiness assessment tool was developed to allow a capability gap analysis to be conducted on existing port facilities based on the identified requirements. Cost models were added to the assessment tool, which allowed GL GH to estimate the total upgrade cost to a port over the period 2014-2030 based on a set of regional project build-out scenarios. Port fee information was gathered from each port allowing an estimate of the potential revenue to the port under this same set of scenarios. The comparison of these revenue and improvement cost figures provides an initial indication of the level of offshore wind port readiness. To facilitate a more in-depth infrastructure analysis, six ports from different geographic regions, with varied levels of interest and preparedness towards offshore wind, were evaluated by modeling a range of installation strategies and port use types to identify gaps in capability and potential opportunities for economic development. Commonalities, trends, and specific examples from these case studies are presented and provide a summary of the current state of offshore wind port readiness in the U.S. and also illustrate the direction some ports have chosen to take to prepare for offshore wind projects. For example, the land area required for wind turbine and foundation manufacturing is substantial, particularly due to the large size of offshore wind components. Also, the necessary bearing capacities of the quayside and storage area are typically greater for offshore wind components than for more conventiona

  18. Nonlinear ultimate strength analysis of fixed offshore platforms for earthquake environments

    SciTech Connect (OSTI)

    Chang, S.S. [Hudson Engineering Corp., Houston, TX (United States)

    1995-12-01T23:59:59.000Z

    The design of an offshore platform usually requires the use of ASME B31.3 and API (American Petroleum Institute) RP 2A design codes. ASME B31.3 addresses the design of pressure piping systems for offshore facilities while API RP 2A ``Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms`` (WSD or LRFD) addresses the structural design. This paper first identifies the difference between the ASME B31.3 and API RP 2A on the earthquake load requirements. Second, the paper presents a nonlinear static pushover analysis of a typical fixed offshore platform subject to a ductility level earthquake in 394 ft (120 m) of water depth. The analysis uses a three-dimensional structural model consisting of STRUT, BEAM-COLUMN and LINEAR BEAM elements to determine the structural response while properly accounting for structure-pile-soil interaction effort. Finally, the status of current on-going efforts to implement the API RP 2A code (LRFD version) to the ISO code (International Organization for Standardization), particularly on the earthquake resistant design aspect of fixed offshore the platforms, is briefly reported.

  19. Sequence stratigraphic framework of Neogene strata in offshore Nigeria

    SciTech Connect (OSTI)

    Pacht, J.A. [Seis Strat Services, Inc., Sugar Land, TX (United States); Bowen, B.E.; Hall, D.J. [Excalibur Consulting, Houston, TX (United States)] [and others

    1996-08-01T23:59:59.000Z

    The western portion of the Nigerian continental margin (Dahomey Basin) exhibits stable to moderately unstable progradation. Systems tracts are similar to those described by Vail for stable progradational margins. In contrast, strata off the central and eastern portions of the Nigerian coast (Niger Delta Complex) exhibit highly unstable progradation, and systems tracts are similar to those in Neogene strata of the offshore Gulf of Mexico. Lowstand basin floor fans in both areas are defined by a well-developed upper reflection. This reflection downlaps along the sequence boundary or abuts against the downthrown side of a growth fault surface. Most lower lowstand (slope fan) strata exhibit discontinuous to semi-continuous subparallel reflections. However, this systems tract also contains channel complexes characterized by chaotic bedding with small bright spots and less common large channels, which exhibit concave-upward reflections. In the western portion of the study area, lower lowstand deposits commonly pinch out on the slope. Deposition occurred largely from point sources. In contrast, contemporaneous shallow-water facies are developed in lower lowstand systems tracts in the Niger Delta Complex. Deposition occurred along a line source. Large amplitude anomalies in the upper lowstand (prograding wedge) suggest well-developed sheet sands occur in shallow-water and deep-water in the Niger Delta complex. However, in the Dahomey Basin there is little evidence of deep-water sands in this interval. The transgressive and highstand systems tracts are usually very thin in outer shelf to basin floor strata in both areas. Both the Dahomey Basin and Niger Delta Complex exhibit different stratigraphic geometries, and therefore, require different exploration strategies.

  20. OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY

    E-Print Network [OSTI]

    Perez, Richard R.

    OFF-SHORE WIND AND GRID-CONNECTED PV: HIGH PENETRATION PEAK SHAVING FOR NEW YORK CITY Richard Perez-shore wind and PV generation using the city of New York as a test case. While wind generation is not known one year's worth of hourly site & time-specific data including electrical demand PV and off-shore wind