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Sample records for fiberglass vertical-axis wind

  1. vertical axis wind turbine

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    vertical axis wind turbine - Sandia Energy Energy Search Icon Sandia Home Locations ... Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ...

  2. Vertical Axis Wind Turbine

    Energy Science and Technology Software Center

    2002-04-01

    Blade fatigue life is an important element in determining the economic viability of the Vertical-Axis Wind Turbine (VAWT). VAWT-SAL Vertical Axis Wind Turbine- Stochastic Aerodynamic Loads Ver 3.2 numerically simulates the stochastic (random0 aerodynamic loads of the Vertical-Axis Wind Turbine (VAWT) created by the atomspheric turbulence. The program takes into account the rotor geometry, operating conditions, and assumed turbulence properties.

  3. Vertical axis wind turbines

    DOEpatents

    Krivcov, Vladimir; Krivospitski, Vladimir; Maksimov, Vasili; Halstead, Richard; Grahov, Jurij

    2011-03-08

    A vertical axis wind turbine is described. The wind turbine can include a top ring, a middle ring and a lower ring, wherein a plurality of vertical airfoils are disposed between the rings. For example, three vertical airfoils can be attached between the upper ring and the middle ring. In addition, three more vertical airfoils can be attached between the lower ring and the middle ring. When wind contacts the vertically arranged airfoils the rings begin to spin. By connecting the rings to a center pole which spins an alternator, electricity can be generated from wind.

  4. Vertical axis wind turbine

    SciTech Connect

    Kutcher, H.R.

    1984-05-15

    A Darrieus-type vertical axis wind turbine is disclosed which includes a vertically extending rotor tube mounted on a support structure with two or three rotor blades of troposkein configuration on the rotor tube for rotating the tube in response to wind energy and thereby drive a generator to produce electrical power. The turbine includes an erection hinge which permits assembly of the rotor tube and blades at close to ground level followed by upward hinging of the rotor assembly to a vertical position. It also includes a system for automatically lubricating the top bearing upon erection and a system for visually tensioning the guy cables.

  5. Vertical axis wind turbine airfoil

    DOEpatents

    Krivcov, Vladimir; Krivospitski, Vladimir; Maksimov, Vasili; Halstead, Richard; Grahov, Jurij Vasiljevich

    2012-12-18

    A vertical axis wind turbine airfoil is described. The wind turbine airfoil can include a leading edge, a trailing edge, an upper curved surface, a lower curved surface, and a centerline running between the upper surface and the lower surface and from the leading edge to the trailing edge. The airfoil can be configured so that the distance between the centerline and the upper surface is the same as the distance between the centerline and the lower surface at all points along the length of the airfoil. A plurality of such airfoils can be included in a vertical axis wind turbine. These airfoils can be vertically disposed and can rotate about a vertical axis.

  6. Vertical-axis wind-turbine program

    SciTech Connect

    Braasch, R.H.

    1981-01-01

    During the interval since the Fourth Biennial Wind Energy Conference, the vertical axis wind turbine program has experienced significant progress. The purpose of this paper is to review that progress in aerodynamics research, structural dynamics research, and machine development.

  7. Vertical Axis Wind Turbine Foundation parameter study

    SciTech Connect

    Lodde, P.F.

    1980-07-01

    The dynamic failure criterion governing the dimensions of prototype Vertical Axis Wind Turbine Foundations is treated as a variable parameter. The resulting change in foundation dimensions and costs is examined.

  8. Offshore Ambitions for the Vertical-Axis Wind Turbine

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Ambitions for the Vertical-Axis Wind Turbine - Sandia Energy Energy Search Icon Sandia ... Offshore Ambitions for the Vertical-Axis Wind Turbine HomeEnergy, News, News & Events, ...

  9. Vertical axis wind turbine control strategy

    SciTech Connect

    McNerney, G.M.

    1981-08-01

    Early expensive in automatic operation of the Sandia 17-m vertical axis research wind turbine (VAWT) has demonstrated the need for a systematic study of control algorithms. To this end, a computer model has been developed that uses actual wind time series and turbine performance data to calculate the power produced by the Sandia 17-m VAWT operating in automatic control. The model has been used to investigate the influence of starting algorithms on annual energy production. The results indicate that, depending on turbine and local wind characteristics, a bad choice of a control algorithm can significantly reduce overall energy production. The model can be used to select control algorithms and threshold parameters that maximize long-term energy production. An attempt has been made to generalize these results from local site and turbine characteristics to obtain general guidelines for control algorithm design.

  10. Vertical-Axis Wind Turbine Mesh Generator

    SciTech Connect

    2014-01-24

    VAWTGen is a mesh generator for creating a finite element beam mesh of arbitrary vertical-axis wind turbines (VAWT). The software accepts input files specifying tower and blade structural and aerodynamic descriptions and constructs a VAWT using a minimal set of inputs. VAWTs with an arbitrary number of blades can be constructed with or without a central tower. Strut connections between the tower and blades can be specified in an arbitrary manner. The software also facilitates specifying arbitrary joints between structural components and concentrated structural tenns (mass and stiffness). The output files which describe the VAWT configuration are intended to be used with the Offshore Wind ENergy Simulation (OWENS) Toolkit software for structural dynamics analysis of VAWTs. Furthermore, VAWTGen is useful for visualizing output from the OWENS analysis software.

  11. Vertical-Axis Wind Turbine Mesh Generator

    Energy Science and Technology Software Center

    2014-01-24

    VAWTGen is a mesh generator for creating a finite element beam mesh of arbitrary vertical-axis wind turbines (VAWT). The software accepts input files specifying tower and blade structural and aerodynamic descriptions and constructs a VAWT using a minimal set of inputs. VAWTs with an arbitrary number of blades can be constructed with or without a central tower. Strut connections between the tower and blades can be specified in an arbitrary manner. The software also facilitatesmore » specifying arbitrary joints between structural components and concentrated structural tenns (mass and stiffness). The output files which describe the VAWT configuration are intended to be used with the Offshore Wind ENergy Simulation (OWENS) Toolkit software for structural dynamics analysis of VAWTs. Furthermore, VAWTGen is useful for visualizing output from the OWENS analysis software.« less

  12. Structural dynamic response characteristics of Darrieus vertical axis wind turbines

    SciTech Connect

    Sullivan, W.N.

    1981-01-01

    A brief summary of the efforts now underway in the area of the structural dynamics of vertical axis wind turbines is given. The emphasis is on discussing the status of analytical tools, the quantity and quality of existing experimental confirmation data, and the implications structural dynamic issues have on rotor design.

  13. Vertical axis wind turbine turbulent response model:

    SciTech Connect

    Not Available

    1990-01-01

    The dynamic response of Sandia National Laboratories' 34-m Darrieus rotor wind turbine at Bushland, Texas, is presented. The formulation used a double-multiple streamtube aerodynamic model with a turbulent airflow and included the effects of linear aeroelastic forces. The structural analysis used established procedures with the program MSC/NASTRAN. The effects of aeroelastic forces on the damping of natural modes agree well with previous results at operating rotor speeds, but show some discrepancies at very high rotor speeds. A number of alternative expressions for the spectrum of turbulent wind were investigated. The model loading represented by each does not differ significantly; a more significant difference is caused by imposing a full lateral coherence of the turbulent flow. Spectra of the predicted stresses at various locations show that without aeroelastic forces, very severe resonance is likely to occur at certain natural frequencies. Inclusion of aeroelastic effects greatly attenuates this stochastic response, especially in modes involving in-plane blade bending. 15 refs., 8 figs., 7 tabs.

  14. Sandia Vertical-Axis Wind-Turbine Research Presented at Science...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Vertical-Axis Wind-Turbine Research Presented at Science of Making Torque from Wind ... Twitter Google + Vimeo GovDelivery SlideShare Sandia Vertical-Axis Wind-Turbine Research ...

  15. Electrical generation using a vertical-axis wind turbine

    SciTech Connect

    Clark, R.N.

    1982-12-01

    Traditionally, windmills have been of the propeller or multiblade types, both of which have their rotational axis parallel to the flow of the wind. A vertical-axis wind turbine has its rotational axis perpendicular to the flow of wind and requires no orientation to keep the rotor in the windstream. The vertical-axis wind turbine operates on the same principle as an airfoil and produces lift and drag as any airfoil. A newly designed 100-kW vertical-axis wind turbine has been operated for one year at the USDA Conservation and Production Research Laboratory, Bushland, TX. The turbine has an induction generator and supplies power to a sprinkler irrigation system with excess power being sold to the electric utility. The turbine begins producing power at 5.5 m/s windspeed and reaches its rated output of 100-kW at 15 m/s. The unit has obtained a peak efficiency of 48% at a windspeed of 8 m/s or 81% of theoretical maximum. Using 17 years of windspeed data from the National Weather Service, the annual energy output is estimated at 200,000 kWh. The unit has experienced several operational problems during its initial testing. Guy cables were enlarged to provide greater stiffness to reduce blade stress levels, lightning shorted the main contactor, and the brake system required a complete redesign and modification. The turbine was operational about 60% of the time.

  16. Aeroelastically coupled blades for vertical axis wind turbines

    DOEpatents

    Paquette, Joshua; Barone, Matthew F.

    2016-02-23

    Various technologies described herein pertain to a vertical axis wind turbine blade configured to rotate about a rotation axis. The vertical axis wind turbine blade includes at least an attachment segment, a rear swept segment, and optionally, a forward swept segment. The attachment segment is contiguous with the forward swept segment, and the forward swept segment is contiguous with the rear swept segment. The attachment segment includes a first portion of a centroid axis, the forward swept segment includes a second portion of the centroid axis, and the rear swept segment includes a third portion of the centroid axis. The second portion of the centroid axis is angularly displaced ahead of the first portion of the centroid axis and the third portion of the centroid axis is angularly displaced behind the first portion of the centroid axis in the direction of rotation about the rotation axis.

  17. Torque ripple in a Darrieus, vertical axis wind turbine

    SciTech Connect

    Reuter, R.C. Jr.

    1980-01-01

    Interaction between a steady wind and a rotating, Darrieus, vertical axis wind turbine produces time periodic aerodynamic loads which cause time dependent torque variations, referred to as torque ripple, to occur in the mechanical link between the turbine and the electrical generator. There is concern for the effect of torque ripple upon fatigue life of drive train components and upon power quality. An analytical solution characterizing the phenomenon of torque ripple has been obtained which is based upon a Fourier expansion of the time dependent features of the problem. Numerical results for torque ripple, some experimental data, determination of acceptable levels and methods of controlling it, are presented and discussed.

  18. A 34-meter VAWT (Vertical Axis Wind Turbine) point design

    SciTech Connect

    Ashwill, T.D.; Berg, D.E.; Dodd, H.M.; Rumsey, M.A.; Sutherland, H.J.; Veers, P.S.

    1991-01-01

    The Wind Energy Division at Sandia National Laboratories recently completed a point design based on the 34-m Vertical Axis Wind Turbine (VAWT) Test Bed. The 34-m Test Bed research machine incorporates several innovations that improve Darrieus technology, including increased energy production, over previous machines. The point design differs minimally from the Test Bed; but by removing research-related items, its estimated cost is substantially reduced. The point design is a first step towards a Test-Bed-based commercial machine that would be competitive with conventional sources of power in the mid-1990s. 11 refs., 12 figs., 4 tabs.

  19. Torque ripple in a Darrieus, vertical axis wind turbine

    SciTech Connect

    Reuter, R.C. Jr.

    1980-09-01

    Interaction between a steady wind and a rotating, Darrieus, vertical axis wind turbine produces time periodic aerodynamic loads which cause time dependent torque variations, referred to as torque ripple, to occur in the mechanical link between the turbine and the electrical generator. There is concern for the effect of torque ripple upon fatigue life of drive train components and upon power quality. An analytical solution characterizing the phenomenon of torque ripple has been obtained which is based upon a Fourier expansion of the time dependent features of the problem. Numerical results for torque ripple, some experimental data, determination of acceptable levels and methods of controlling it, are presented and discussed.

  20. Vertical-axis wind turbines -- The current status of an old technology

    SciTech Connect

    Berg, D.E.

    1996-12-31

    Vertical-axis wind turbine technology is not well understood, even though the earliest wind machines rotated about a vertical axis. The operating environment of a vertical-axis wind turbine is quite complex, but detailed analysis capabilities have been developed and verified over the last 30 years. Although vertical-axis technology has not been widely commercialized, it exhibits both advantages and disadvantages compared to horizontal-axis technology, and in some applications, it appears to offer significant advantages.

  1. Fixed wake theory for vertical axis wind turbines

    SciTech Connect

    Wilson, R.E.; Walker, S.N.

    1983-11-01

    A theory for vertical axis wind turbines has been developed using a fixed wake approach. The theory combines some of the best features of vortex and streamtube approaches. This approach accounts for flow differences between fore-and-aft blade positions that are predicted by vortex methods while retaining the low computation costs associated with streamtube theories. The theory is applied to high tip speed ratio operation of a Darrieus Rotor where the use of linear aerodynamics results in explicit calculation of the induced velocities. Comparison to test results shows good agreement.

  2. Fixed wake theory for vertical axis wind turbines

    SciTech Connect

    Wilson, R.E.; Walker, S.N.

    1983-12-01

    A theory for vertical axis wind turbines has been developed using a fixed wake approach. The theory combines some of the best features of vortex and streamtube approaches. This approach accounts for flow differences between fore-and-aftblade positions that are predicted by vortex methods while retaining the low computation costs associated with streamtube theories. The theory is applied to high tip speed ratio operation of a Darrieus Rotor where the use of linear aerodynamics results in explicit calculation of the induced velocities. Comparison to test results shows good agreement.

  3. Local-circulation model for Darrieus vertical-axis wind turbines

    SciTech Connect

    Masse, B.

    1986-04-01

    A new computational model for the aerodynamics of the vertical-axis wind turbine is presented. Based on the local-circulation method generalized for curved blades, combined with a wake model for the vertical-axis wind turbine, it differs markedly from current models based on variations in the streamtube momentum and vortex models using the lifting-line theory. A computer code has been developed to calculate the loads and performance of the Darrieus vertical-axis wind turbine. The results show good agreement with experimental data and compare well with other methods. 12 references.

  4. Modal testing of the vertical axis wind turbine

    SciTech Connect

    Miller, D.E.; Nord, A.R.

    1980-01-01

    The VAWT is a 17-meter structure which has been tested in a variety of configurations. Early in the program there were three fiberglass blades reinforced with struts. A later configuration had two aluminum blades. Both of these have been tested by the modal analysis group. There is also a three-bladed aluminum structure which will be tested in the coming months. Test results are presented.

  5. Developments in blade shape design for a Darrieus vertical axis wind turbine

    SciTech Connect

    Ashwill, T.D.; Leonard, T.M.

    1986-09-01

    A new computer program package has been developed that determines the troposkein shape for a Darrieus Vertical Axis Wind Turbine Blade with any geometrical configuration or rotation rate. This package allows users to interact and develop a ''buildable'' blade whose shape closely approximates the troposkein. Use of this package can significantly reduce flatwise mean bending stresses in the blade and increase fatigue life.

  6. Recent Darrieus vertical-axis wind turbine aerodynamical experiments at Sandia National Laboratories

    SciTech Connect

    Klimas, P.C.

    1981-01-01

    Experiments contributing to the understanding of the aerodynamics of airfoils operating in the vertical axis wind turbine (VAWT) environment are described. These experiments are ultimately intended to reduce VAWT cost of energy and increase system reliability. They include chordwise pressure surveys, circumferential blade acceleration surveys, effects of blade camber, pitch and offset, blade blowing, and use of sections designed specifically for VAWT application.

  7. Accelerometer measurements of aerodynamic torque on the DOE/Sandia 17-m Vertical Axis Wind Turbine

    SciTech Connect

    McNerney, G.M.

    1981-04-01

    An experiment was conducted on the DOE/Sandia 17-m Vertical Axis Wind Turbine, using rotor shaft torque and rotor angular acceleration data to deduce the functional form of the aerodynamic torque. An analysis of the experiment, along with errors encountered, is presented and the results listed in both graphic and analytical form.

  8. Simulation of winds as seen by a rotating vertical axis wind turbine blade

    SciTech Connect

    George, R.L.

    1984-02-01

    The objective of this report is to provide turbulent wind analyses relevant to the design and testing of Vertical Axis Wind Turbines (VAWT). A technique was developed for utilizing high-speed turbulence wind data from a line of seven anemometers at a single level to simulate the wind seen by a rotating VAWT blade. Twelve data cases, representing a range of wind speeds and stability classes, were selected from the large volume of data available from the Clayton, New Mexico, Vertical Plane Array (VPA) project. Simulations were run of the rotationally sampled wind speed relative to the earth, as well as the tangential and radial wind speeds, which are relative to the rotating wind turbine blade. Spectral analysis is used to compare and assess wind simulations from the different wind regimes, as well as from alternate wind measurement techniques. The variance in the wind speed at frequencies at or above the blade rotation rate is computed for all cases, and is used to quantitatively compare the VAWT simulations with Horizontal Axis Wind Turbine (HAWT) simulations. Qualitative comparisons are also made with direct wind measurements from a VAWT blade.

  9. Structural design of the Sandia 34-meter Vertical-Axis Wind Turbine

    SciTech Connect

    Berg, D.E.

    1985-04-01

    Sandia National Laboratories, as the lead Department of Energy laboratory for Vertical-Axis Wind Turbine development, is currently designing a 34-m diameter Darrieus-type vertical-axis wind turbine. This turbine will be a research test bed that provides a focus for advancing technology and validating design and fabrication techniques in a size range suitable for utility use. Structural data from this machine will allow structural modeling to be refined and verified for a turbine on which the gravity effects and stochastic wind loading are significant. Performance data from it will allow aerodynamic modeling to be refined and verified. This design effort incorporates Sandia's state-of-the-art analysis tools in the design of a complete machine. This report describes the analytic tools being used, summarizes the conceptual design procedure, and presents portions of the detailed design as it existed in September 1984.

  10. Double-multiple streamtube model for studying vertical-axis wind turbines

    SciTech Connect

    Paraschivoiu, I.

    1988-08-01

    This work describes the present state-of-the-art in double-multiple streamtube method for modeling the Darrieus-type vertical-axis wind turbine (VAWT). Comparisons of the analytical results with the other predictions and available experimental data show a good agreement. This method, which incorporates dynamic-stall and secondary effects, can be used for generating a suitable aerodynamic-load model for structural design analysis of the Darrieus rotor. 32 references.

  11. Wake Studies at the Flowind Vertical Axis Wind Turbine Generator Site.

    SciTech Connect

    Baker, Robert W.; Walker, Stel Nathan; Katen, Paul C.

    1984-03-01

    In a continuing effort to study and characterize various types and sizes of wind turbine generator wakes a test program was conducted at the FloWind 170 kW vertical axis wind turbine (VAWT) near Ellensburg, Washington. Oregon State University (OSU) scientists measured the wake behind the 90 ft. tall Darrieus VAWT using fixed place and portable kite anemometers. Downwind velocity deficits were measured from 3-9 diameters along the wake centerline at rotor midpoint (55 ft.) and perpendicular to the wake. Wake turbulence characteristics were also measured. The measured velocity deficits were compared to wake model calculations.

  12. A method of calculation on the airloading of vertical axis wind turbine

    SciTech Connect

    Azuma, A.; Kimura, S.

    1983-08-01

    A new approach has been developed by using Local Circulation Method in order to analyze the aerodynamic characteristics of the Darrieus Type Vertical-Axis Wind Turbine. The validity of this method is assured in the aerodynamics of helicopter rotor and of horizontal-axis wind turbine. Results obtained by the present approach were compared with the test results conducted by Sandia National Laboratories and shown to be in good correlation with them. The azimuthwise variation of spanwise airloading, torque and longitudinal forces are well calculated for various operational conditions.

  13. Pressure distributions on an operating vertical-axis wind-turbine blade element

    SciTech Connect

    Akins, R.E.; Klimas, P.C.; Croll, R.H.

    1983-01-01

    Efforts to validate aerodynamic models of vertical-axis wind turbines have been limited by a lack of appropriate measurements as stall begins to occur along the blade. In order to measure the forces acting on a blade through stall and in post-stall, a blade has been instrumented using flush-mounted pressure transducers. Data have been obtained on an appropriate range of turbine operating conditions. These data indicate that at high incident wind speeds, dynamic stall occurs on the upwind portion of the rotation.

  14. Design and fabrication of a Darrieus/Savonius hybrid vertical-axis wind turbine

    SciTech Connect

    Bell, B.F.

    1983-09-01

    This report presents the results of a design and analysis of a Darrieus/Savonius hybrid vertical-axis wind turbine. The system described is a utility interfaced 3-m turbine/1-kW generator designed to be cost effective in 5.4 m/s (12 mph) average wind sites. Included are the review of design efforts in the areas of aerodynamics and structural analysis; and preliminary design details of the 3-m/1-kW Darrieus/Savonius turbine (DST).

  15. Proceedings of the vertical axis wind turbine (VAWT) design technology seminar for industry

    SciTech Connect

    Johnston, S.F. Jr.

    1980-08-01

    The objective of the Vertical Axis Wind Turbine (VAWT) Program at Sandia National Laboratories is to develop technology that results in economical, industry-produced, and commercially marketable wind energy systems. The purpose of the VAWT Design Technology Seminar or Industry was to provide for the exchange of the current state-of-the-art and predictions for future VAWT technology. Emphasis was placed on technology transfer on Sandia's technical developments and on defining the available analytic and design tools. Separate abstracts are included for presented papers.

  16. Rotor instrumentation circuits for the Sandia 34-meter vertical axis wind turbine

    SciTech Connect

    Sutherland, H.J.; Stephenson, W.A.

    1988-07-01

    Sandia National Laboratories has erected a research oriented, 34-meter diameter, Darrieus vertical axis wind turbine near Bushland, Texas, which has been designated the Sandia 34-m VAWT Test Bed. To meet present and future research needs, the machine was equipped with a large array of sensors. This manuscript details the sensors initially placed on the rotor, their respective instrumentation circuits, and the provisions incorporated into the design of the rotor instrumentation circuits for future research. This manuscript was written as a reference manual for the rotor instrumentation of the Test Bed. 16 refs., 8 figs., 7 tabs.

  17. VAWTDYN: a numerical package for the dynamic analysis of vertical axis wind turbines

    SciTech Connect

    Lobitz, D.W.; Sullivan, W.N.

    1980-07-01

    In order to design wind turbines which possess long life and at the same time use a minimum quantity of low-cost materials, it is essential that dynamic, in addition to static, structural analyses be performed to eliminate unnecessary margins of safety resulting from undetermined dynamic amplifications. The VAWTDYN package provides a tool for assessing these amplifications in two-bladed vertical axis wind turbines. The dynamic model on which the package is based contains turbine motions most commonly observed in existing research systems. Gyroscopic effects, structural damping, aerodynamic wind loading, and power generation through either an induction or synchronous generator are also included in the model. In addition to a comprehensive description of the model, this report documents the efforts that have gone into the verification, qualification, and demonstration of the package.

  18. Structural design of the Sandia 34-M Vertical Axis Wind Turbine

    SciTech Connect

    Berg, D.E.

    1985-01-01

    Sandia National Laboratories, as the lead DOE laboratory for Vertical Axis Wind Turbine (VAWT) development, is currently designing a 34-meter diameter Darrieus-type VAWT. This turbine will be a research test bed which provides a focus for advancing technology and validating design and fabrication techniques in a size range suitable for utility use. Structural data from this machine will allow structural modeling to be refined and verified for a turbine on which the gravity effects and stochastic wind loading are significant. Performance data from it will allow aerodynamic modeling to be refined and verified. The design effort incorporates Sandia's state-of-the-art analysis tools in the design of a complete machine. This paper describes the analytic tools we are using, summarizes the conceptual design procedure and presents portions of our detailed design as it exists in September 1984.

  19. Vertical axis wind turbine power regulation through centrifugally pumped lift spoiling

    SciTech Connect

    Klimas, P.C.; Sladky, J.F. Jr.

    1985-01-01

    This paper describes an approach for lowering the rated windspeeds of Darrieus-type vertical axis wind turbines (VAWTs) whose blades are hollow aluminum extrusions. The blades, which when rotating act as centrifugal pumps, are fitted with a series of small perforations distributed along a portion of the blades' span. By valving the ends of the hollow blades, flow into the blade ends and out of the perforations may be controlled. This flow can induce premature aerodynamic stall on the blade elements, thereby reducing both the rated power of the turbine and its cost-of-energy. The concept has been proven on the Sandia National Laboratories 5-m diameter research VAWT and force balance and flow visualization wind tunnel tests have been conducted using a blade section designed for the VAWT application.

  20. Guy-cable design and damping for vertical-axis wind turbines

    SciTech Connect

    Carne, T.G.

    1981-05-01

    Guy cables are frequently used to support vertical axis wind turbines since guying the turbine reduces some of the structural requirements on the tower. The guys must be designed to provide both the required strength and the required stiffness at the top of the turbine. The axial load which the guys apply to the tower, bearings, and foundations is an undesirable consequence of using guys to support the turbine. Limiting the axial load so that it does not significantly affect the cost of the turbine is an important objective of the cable design. The lateral vibration of the cables is another feature of the cable design which needs to be considered. These aspects of the cable design are discussed in this paper, and a technique for damping cable vibrations is mathematically analyzed and demonstrated with experimental data.

  1. Field test report of the Department of Energy's 100-kW vertical axis wind turbine

    SciTech Connect

    Nellums, R.O.

    1985-02-01

    Three second-generation Darrieus-type vertical axis wind turbines of approximately 120-kW capacity per unit were installed in 1980-1981. Through March 1984, over 9000 hours of operation had been accumulated, including 6600 hours of operation on the unit installed in Bushland, Texas. The turbines were heavily instrumented and have yielded a large amount of test data. This report summarizes the test results of this program, including aerodynamic, structural, drive-train, and economic data. Among the most favorable results were an aerodynamic peak performance coefficient of 0.41; fundamental structural integrity requiring few repairs and no major component replacements as of March 1984; and an average prototype fabrication cost of approximately $970 per peak kilowatt of output. The report closes with a review of potential design improvements.

  2. Department of Energy (DOE) research program in structural analysis of vertical-axis wind turbines

    SciTech Connect

    Sullivan, W.N.

    1982-01-01

    The Darrieus-type Vertical Axis Wind Turbine (VAWT) presents a variety of unusual structural problems to designers. The level of understanding of these structural problems governs, to a large degree, the success or failure of today's rotor designs. A survey is presented of the technology available for rotor structural design with emphasis on the DOE research program now underway. Itemizations are included of the major strucural issues unique to the VAWT along with discussion of available analysis techniques for each problem area. It is concluded that tools are available to at least approximately address the most important problems. However, experimental data for confirmation is rather limited in terms of volume and the range of rotor configurations tested.

  3. Strain gauge validation experiments for the Sandia 34-meter VAWT (vertical axis wind turbine) Test Bed

    SciTech Connect

    Sutherland, H.J.

    1988-08-01

    Sandia National Laboratories has erected a research oriented, 34- meter diameter, Darrieus vertical axis wind turbine near Bushland, Texas. This machine, designated the Sandia 34-m VAWT Test Bed, is equipped with a large array of strain gauges that have been placed at critical positions about the blades. This manuscript details a series of four-point bend experiments that were conducted to validate the output of the blade strain gauge circuits. The output of a particular gauge circuit is validated by comparing its output to ''equivalent'' gauge circuits (in this stress state) and to theoretical predictions. With only a few exceptions, the difference between measured and predicted strain values for a gauge circuit was found to be of the order of the estimated repeatability for the measurement system. 8 refs., 20 figs., 3 tabs.

  4. Structural-dynamic-response characteristics of Darrieus vertical-axis wind turbines

    SciTech Connect

    Sullivan, W.N.

    1981-01-01

    Operational experience at Sandia National Laboratories (SNL) with Darrieus-type vertical axis wind turbines (VAWTs) has indicated that a variety of dynamic issues can affect structural performance of the system. The observation and analysis of structural dynamic responses in the VAWT have been divided among three major aspects of the system; namely rotor vibrations, torsional response of the drive train, and transverse vibrations of the cables. This division is not arbitrary, but is rather because the response of these subsystems can be accurately decoupled from each other in most circumstances. This paper will present only a brief summary of the efforts now underway at SNL in the area of structural dynamics. The emphasis will be on discussing the status of our analytical tools, the quantity and quality of existing experimental confirmation data, and the implications structural dynamic issues have on rotor design.

  5. Customized airfoils and their impact on VAWT (Vertical-Axis Wind Turbine) cost of energy

    SciTech Connect

    Berg, D.E.

    1990-01-01

    Sandia National Laboratories has developed a family of airfoils specifically designed for use in the equatorial portion of a Vertical-Axis Wind Turbine (VAWT) blade. An airfoil of that family has been incorporated into the rotor blades of the DOE/Sandia 34-m diameter VAWT Test Bed. The airfoil and rotor design process is reviewed. Comparisons with data recently acquired from flow visualization tests and from the DOE/Sandia 34-m diameter VAWT Test Bed illustrate the success that was achieved in the design. The economic optimization model used in the design is described and used to evaluate the effect of modifications to the current Test Bed blade. 1 tab., 11 figs., 13 refs.

  6. Improved double-multiple streamtube model for the Darrieus-type vertical-axis wind turbine

    SciTech Connect

    Berg, D.E.

    1983-01-01

    Double streamtube codes model the curved blade (Darrieus-type) vertical-axis wind turbine (VAWT) as a double actuator-disk arrangement (one disk for the upwind half of the rotor and a second disk for the downwind half) and use conservation of momentum principles to determine the forces acting on the turbine blades and the turbine performance. These models differentiate between the upwind and downwind sections of the rotor and are capable of determining blade loading more accurately than the widely-used single-actuator-disk streamtube models. Additional accuracy may be obtained by representing the turbine as a collection of several streamtubes, each of which is modeled as a double actuator disk. This is referred to as the double-multiple-streamtube model. Sandia National Laboratories has developed a double-multiple streamtube model for the VAWT which incorporates the effects of the incident wind boundary layer, nonuniform velocity between the upwind and downwind sections of the rotor, dynamic stall effects and local blade Reynolds number variations. This paper presents the theory underlying this VAWT model and describes the code capabilities. Code results are compared with experimental data from two VAWT's and with the results from another double-multiple-streamtube and a vortex-filament code. The effects of neglecting dynamic stall and horizontal wind-velocity distribution are also illustrated.

  7. Design, performance and economics of the DAF Indal 50 kw and 375 kw vertical axis wind turbine

    SciTech Connect

    Schienbein, L.A.; Malcolm, D.J.

    1982-03-01

    A review of the development and performance of the DAF Indal 50 kW vertical axis Darrieus wind turbines shows that a high level of technical development and reliability has been achieved. Features of the drive train, braking and control systems are discussed and performance details are presented. 5 refs.

  8. Design and fabrication of a low-cost Darrieus vertical axis wind turbine system. Phase I, technical report

    SciTech Connect

    Not Available

    1980-03-01

    Design and Fabrication of a Low Cost Darrieus Vertical Axis Wind Turbine System, Department of Energy Contract No. EM-78-C-04-4272, represents the first major step toward the commercialization of the Darrieus type vertical-axis wind turbine in the United States. The contract has two phases, a design phase and a fabrication and installation phase. Presented in this report is the work completed in Phase I, the design phase. As part of the Federal Wind Energy Program, the main objectives of this project are to obtain realistic fabrication cost data based on current technology and to provide a low cost system design suitable for continued production and/or to serve as a baseline for further cost reduction as well as engineering improvement efforts.

  9. Effects of blade preset pitch/offset on curved-blade Darrieus vertical axis wind turbine performance

    SciTech Connect

    Klimas, P.C.; Worstell, M.H.

    1981-10-01

    Current designs of curved-blade Darrieus vertical-axis wind turbines (VAWTs) have blades mounted in such a way that the position vector from the axis of rotation intersects the blade chord perpendicularly between the -25% and -50% chord points. This paper describes the effects on aerodynamic performance of the Sandia National Laboratories' (SNL) 5-m-dia turbine when its symmetrical cross-section blades are mounted such that the axis of rotation-blade chord position vector effects a normal intersection with the blade chord at points between -180% and +77% chord. These variations produce significant changes in cut-in tip-speed ratio, peak efficiency, and peak power.

  10. Design, performance, and economics of 50-kW and 500-kW vertical axis wind turbines

    SciTech Connect

    Schienbein, L.A.; Malcolm, D.J.

    1983-11-01

    A review of the development and performance of the DAF Indal 50-kW vertical axis Darrieus wind turbine shows that a high level of technical development and reliability has been achieved. Features of the drive train, braking and control systems are discussed and performance details are presented. Details are also presented of a 500-kW VAWT that is currently in production. A discussion of the economics of both the 50-kW and 500-kW VAWTs is included, showing the effects of charge rate, installed cost, operating cost, performance, and efficiency. 6 references.

  11. Design, performance, and economics of 50-kW and 500-kW vertical axis wind turbines

    SciTech Connect

    Scheinbein, L.A.; Malcolm, D.J.

    1983-11-01

    A review of the development and performance of the DAF Indal 50-kW vertical axis Darrieus wind turbine shows that a high level of technical development and reliability has been achieved. Features of the drive train, braking and control systems are discussed and performance details are presented. Details are also presented of a 500-kW VAWT that is currently in production. A discussion of the economics of both the 50-kW and 500-kW VAWTs is included, showing the effects of charge rate, installed cost, operating cost, performance, and efficiency.

  12. Design and fabrication of a low cost Darrieus vertical axis wind turbine system: Phase II. Volume 1. Executive summary

    SciTech Connect

    Not Available

    1983-03-01

    Described is the successful fabrication, installation, and checkout of 100 kW 17 metre Vertical Axis Wind Turbines (VAWTs). The turbines are Darrieus-type VAWTs with rotors 17 metres (55 feet) in diameter and 25.15 metres (83 feet) in height. They can produce 100 kW of electric power at a cost of energy as low as 3 cents per kWh, in an 18 mph wind regime using 12% annualized costs. Four turbines were produced; three are installed and are operable at: (1) Wind Systems Test Center, Rocky Flats, Colorado; (2) the US Department of Agriculture Conservation and Production Research Center at Bushland, Texas; and (3) Tisbury Water Authority, Vineyard Haven, Massachusetts, on the island of Martha's Vineyard. The fourth turbine is stored at Bushland, Texas, awaiting selection of an erection site.

  13. Approach to the fatigue analysis of vertical-axis wind-turbine blades

    SciTech Connect

    Veers, P.S.

    1981-09-01

    A cursory analysis of the stress history of wind turbine blades indicates that a single stress level at each wind speed does not adequately describe the blade stress history. A statistical description is required. Blade stress data collected from the DOE/ALCOA Low Cost experimental turbines indicate that the Rayleigh probability density function adequately describes the distribution of vibratory stresses at each wind speed. The Rayleigh probability density function allows the distribution of vibratory stresses to be described by the RMS of the stress vs. time signal. With the RMS stress level described for all wind speeds, the complete stress history of the turbine blades is known. Miner's linear cumulative damage rule is used as a basis for summing the fatigue damage over all operating conditions. An analytical expression is derived to predict blade fatigue life.

  14. Feasibility study on a low power vertical axis wind-powered generator. Technical report

    SciTech Connect

    Crook, W.R.; Puust, T.; Robinson, M.L.; Vencel, L.J.

    1980-09-01

    Described are investigations carried out to establish a design concept for a 1 kW wind-powered generator suitable for use as an alternative power source in isolated locations. Design criteria include high power to weight ratio, simplicity of assembly and potential for fixed, mobile or portable applications. The report proposes a suitable configuration using a Darrieus straight blade rotor with a microprocessor based control system and provides information on the power output to be expected in different wind environments.

  15. User's manual for the vertical axis wind turbine code VDART3

    SciTech Connect

    Strickland, J.H.; Smith, T.; Sun, K.

    1981-06-01

    The user's manual provides details on the Darrieus wind turbine aerodynamic performance/loads prediction computer code, VDART3. The code is the latest generation of vortex-based models and includes the effects of dynamic stall, pitching circulation, and added mass.

  16. A model for the response of vertical axis wind turbines to turbulent flow: Parts 1 and 2

    SciTech Connect

    Malcolm, D.R.

    1988-07-01

    This report describes a project intended to incorporate the effects of atmospheric turbulence into the structural response of Darrieus rotor, vertical axis wind turbines. The basis of the technique is the generation of a suitable time series of wind velocities, which are passed through a double multiple streamtube aerodynamic representation of the rotor. The aerodynamic loads are decomposed into components of the real eigenvectors of the rotor and subsequently into full-power and cross-spectral densities. These modal spectra are submitted as input to a modified NASTRAN random load analysis and the power spectra of selected responses are obtained. This procedure appears to be successful. Results at zero turbulence agree with alternative solutions, and when turbulence is included, the predicted stress spectra for the Indal 6400 rotor are in good agreement with field data. The model predicts that the effect of turbulence on harmonic frequency peaks and on all lead-lag bending will not be great. However, it appears that only 11% turbulence intensity can almost double the rms of cyclic flatwise blade bending. 23 refs., 27 figs., 4 tabs.

  17. Rotationally-sampled flow-field measurements for vertical-axis wind turbines

    SciTech Connect

    Akins, R.E.

    1983-01-01

    This effects a wind-turbine blade moving through a turbulent flow field have on the feequency content of the relative velocity seen by the blade are an important aspect of the aerodynamically induced loads and may also contribute to the fatigue loads. Recent work has emphasized these effects in large horizontal-axis turbines. Measurements of a rotationally-sampled flow field using the DOE/Sandia 17-m research turbine have been completed. These measurements show increased energy content at integer multiples of rotation rate and indicate why rotational sampling may be an important concept in rotor design. These measurements are the first to have been conducted on an operational turbine in a field environment.

  18. A user`s manual for the program TRES4: Random vibration analysis of vertical-axis wind turbines in turbulent winds

    SciTech Connect

    1994-03-01

    TRES4 is a software package that works with the MSC/NASTRAN finite element analysis code to conduct random vibration analysis of vertical-axis wind turbines. The loads on the turbine are calculated in the time domain to retain the nonlinearities of stalled aerodynamic loadings. The loads are transformed into modal coordinates to reduce the number of degrees of freedom. Power spectra and cross spectra of the loads are calculated in the modal coordinate system. These loads are written in NASTRAN Bulk Data format to be read and applied in a random vibration analysis by NASTRAN. The resulting response is then transformed back to physical coordinates to facilitate user interpretation.

  19. Innovative wind turbines. The circulation control vertical axis wind turbine. Final report, May 1, 1978-December 31, 1979

    SciTech Connect

    Walters, R.E.; Migliore, P.G.; Wolfe, W.P.

    1980-01-01

    An indoor facility was developed for use in the aerodynamic testing of Darrieus wind turbine blades. A three-component internal strain gage balance was used to deduce lift, drag and moment coefficients of blades whose angle of attack, chord to radius ratio and Reynolds number can be systematically varied. The unusual flow field of this test environment necessitates unique downwash corrections for angle of attack and induced drag.

  20. Aerodynamic characteristics of seven symmetrical airfoil sections through 180-degree angle of attack for use in aerodynamic analysis of vertical axis wind turbines

    SciTech Connect

    Sheldahl, R E; Klimas, P C

    1981-03-01

    When work began on the Darrieus vertical axis wind turbine (VAWT) program at Sandia National Laboratories, it was recognized that there was a paucity of symmetrical airfoil data needed to describe the aerodynamics of turbine blades. Curved-bladed Darrieus turbines operate at local Reynolds numbers (Re) and angles of attack (..cap alpha..) seldom encountered in aeronautical applications. This report describes (1) a wind tunnel test series conducted at moderate values of Re in which 0 less than or equal to ..cap alpha.. less than or equal to 180/sup 0/ force and moment data were obtained for four symmetrical blade-candidate airfoil sections (NACA-0009, -0012, -0012H, and -0015), and (2) how an airfoil property synthesizer code can be used to extend the measured properties to arbitrary values of Re (10/sup 4/ less than or equal to Re less than or equal to 10/sup 7/) and to certain other section profiles (NACA-0018, -0021, -0025).

  1. Design and fabrication of a low-cost Darrieus vertical-axis wind-turbine system, Phase II. Volume 2. Final technical report

    SciTech Connect

    Not Available

    1983-03-01

    This report describes Alcoa's successful fabrication, installation, and check-out of 100-kW 17-metre Vertical-Axis Wind Turbines (VAWTs). The turbines are Darrieus-type VAWTs with rotors 17 meters (55 feet) in diameter and 25.15 metres (83 feet) in height. They can produce 100 kW of electric power at a cost of energy as low as 3 cents per kWh, in an 18-mph wind regime using 12% annualized costs. Four turbines were produced; three are installed and are operable at (1) the Wind Systems Test Center, Rocky Flats, Colorado; (2) the US Department of Agriculture Conservation and Production Research Center at Bushland, Texas; and (3) Tisbury Water Authority, Vineyard Haven, Massachusetts, on the island of Martha's Vineyard. The fourth turbine is stored at Bushland, Texas, awaiting selection of an erection site. Technical direction was provided to Alcoa by Sandia National Laboratories. Contract results are documented in this report (SAND82-7113) and in the Phase I Technical Report (ALO-4272), both of which are available through NTIS.

  2. Design and fabrication of a low-cost Darrieus vertical-axis wind-turbine system, Phase II. Volume 3. Design, fabrication, and site drawing

    SciTech Connect

    Not Available

    1983-03-01

    This report contains the design, fabrication, and site drawings associated with fabrication, installation, and check-out of 100-kW 17-metre Vertical-Axis Wind Turbines (VAWTs), under a 2-year, $1.8 million Phase II contract with the US Department of Energy. Design by Alcoa in Phase I of this contract, the turbines are Darrieus-type VAWTs with rotors 17 metres (55 feet) in diameter and 25.15 metres (83 feet) in height. They can produce 100 kW of electric power at a cost of energy as low as 3 cents per kWh, in an 18-mph wind regime using 12% annualized costs. Four turbines were produced; three are installed and are operable at (1) the Wind Systems Test Center, Rocky Flats, Colorado; (2) the US Department of Agriculture Conservation and Production Research Center at Bushland, Texas; and (3) Tisbury Water Authority, Vineyard Haven, Massachusetts, on the island of Martha's Vineyard. The fourth turbine is stored at Bushland, Texas, awaiting selection of an erection site.

  3. Fourier coefficients of aerodynamic torque functions for the DOE/Sandia 17-m vertical axis wind turbine

    SciTech Connect

    McNerney, G.M.

    1980-02-01

    The spectral characteristics of the aerodynamic torque on wind turbines are important in assessing drivetrain performance. This paper describes a Fast Fourier Transform method to deduce Fourier coefficients for the periodic torque functions predicted by aerodynamic theories for Darrieus-type rotors. The method is applied to show spectral characteristics of the torque on the DOE/Sandia 17-m Darrieus rotor predicted by the single and multiple streamtube aerodynamic models.

  4. A Comparison of Platform Options for Deep-water Floating Offshore Vertical Axis Wind Turbines: An Initial Study.

    SciTech Connect

    Bull, Diana L; Fowler, Matthew; Goupee, Andrew

    2014-08-01

    This analysis utilizes a 5 - MW VAWT topside design envelope created by Sandia National Laborator ies to compare floating platform options fo r each turbine in the design space. The platform designs are based on two existing designs, the OC3 Hywind spar - buoy and Principal Power's WindFloat semi - submersible. These designs are scaled using Froude - scaling relationships to determine an appropriately sized spar - buoy and semi - submersible design for each topside. Both the physical size of the required platform as well as mooring configurations are considered. Results are compared with a comparable 5 - MW HAWT in order to identify potential differences in the platform and mooring sizing between the VAWT and HAWT . The study shows that there is potential for cost savings due to reduced platform size requirements for the VAWT.

  5. Control system for a vertical axis windmill

    DOEpatents

    Brulle, Robert V.

    1983-10-18

    A vertical axis windmill having a rotating structure is provided with a series of articulated vertical blades whose positions are controlled to maintain a constant RPM for the rotating structure, when wind speed is sufficient. A microprocessor controller is used to process information on wind speed, wind direction and RPM of the rotating structure to develop an electrical signal for establishing blade position. The preferred embodiment of the invention, when connected to a utility grid, is designed to generate 40 kilowatts of power when exposed to a 20 mile per hour wind. The control system for the windmill includes electrical blade actuators that modulate the blades of the rotating structure. Blade modulation controls the blade angle of attack, which in turn controls the RPM of the rotor. In the preferred embodiment, the microprocessor controller provides the operation logic and control functions. A wind speed sensor provides inputs to start or stop the windmill, and a wind direction sensor is used to keep the blade flip region at 90.degree. and 270.degree. to the wind. The control system is designed to maintain constant rotor RPM when wind speed is between 10 and 40 miles per hour.

  6. Control system for a vertical-axis windmill

    DOEpatents

    Brulle, R.V.

    1981-09-03

    A vertical-axis windmill having a rotating structure is provided with a series of articulated vertical blades whose positions are controlled to maintain a constant RPM for the rotating structure, when wind speed is sufficient. A microprocessor controller is used to process information on wind speed, wind direction and RPM of the rotating structure to develop an electrical signal for establishing blade position. The preferred embodiment of the invention, when connected to a utility grid, is designed to generate 40 kilowatts of power when exposed to a 20 mile per hour wind. The control system for the windmill includes electrical blade actuators that modulate the blades of the rotating structure. Blade modulation controls the blade angle of attack, which in turn controls the RPM of the rotor. In the preferred embodiment, the microprocessor controller provides the operation logic and control functions. A wind speed sensor provides inputs to start or stop the windmill, and a wind direction sensor is used to keep the blade flip region at 90 and 270/sup 0/ to the wind. The control system is designed to maintain constant rotor RPM when wind speed is between 10 and 40 miles per hour.

  7. Three-dimensional Numerical Analysis on Blade Response of Vertical Axis Tidal Current Turbine Under Operational Condition

    SciTech Connect

    Li, Ye; Karri, Naveen K.; Wang, Qi

    2014-04-30

    Tidal power as a large-scale renewable source of energy has been receiving significant attention recently because of its advantages over the wind and other renewal energy sources. The technology used to harvest energy from tidal current is called a tidal current turbine. Though some of the principles of wind turbine design are applicable to tidal current turbines, the design of latter ones need additional considerations like cavitation damage, corrosion etc. for the long-term reliability of such turbines. Depending up on the orientation of axis, tidal current turbines can be classified as vertical axis turbines or horizontal axis turbines. Existing studies on the vertical axis tidal current turbine focus more on the hydrodynamic aspects of the turbine rather than the structural aspects. This paper summarizes our recent efforts to study the integrated hydrodynamic and structural aspects of the vertical axis tidal current turbines. After reviewing existing methods in modeling tidal current turbines, we developed a hybrid approach that combines discrete vortex method -finite element method that can simulate the integrated hydrodynamic and structural response of a vertical axis turbine. This hybrid method was initially employed to analyze a typical three-blade vertical axis turbine. The power coefficient was used to evaluate the hydrodynamic performance, and critical deflection was considered to evaluate the structural reliability. A sensitivity analysis was also conducted with various turbine height-to-radius ratios. The results indicate that both the power output and failure probability increase with the turbine height, suggesting a necessity for optimal design. An attempt to optimize a 3-blade vertical axis turbine design with hybrid method yielded a ratio of turbine height to radius (H/R) about 3.0 for reliable maximum power output.

  8. Testing appropriateness of small scale vertical axis windmills. Final progress report

    SciTech Connect

    Dengler, T.

    1984-04-26

    A comparative evaluation was performed on three vertical axis windmills; Darrieus, rotating bucket and flexible, to determine which of the three was the most practical for the homeowner to construct and use to supplement electric consumption. The design and construction of the windmills are summarized. Visual observations were made on the behavior of the windmills and an anemometer was installed for the purpose of collecting data on windmill performance in different wind velocities. Results showed that the Darrieus windmill performed best, followed closely by the flexible vane. The rotating bucket was found to be a poor performer.

  9. Sandia vertical axis wind turbines (VAWTs) demonstrate offshore...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Applications National Solar Thermal Test Facility ... EnergyWater Nexus EnergyWater History Water Monitoring & ... Market Transformation Fuel Cells Predictive Simulation of ...

  10. Dynamic stall: The case of the vertical axis wind turbine

    SciTech Connect

    Laneville, A.; Vittecog, P.

    1986-05-01

    This paper presents the results of an experimental investigation on a driven Darrieus turbine rotating at different tip speed ratios. For a Reynolds number of 3.8 x 10/sup 4/, the results indicate the presence of dynamic stall at tip speed ratio less than 4, and that helicopter blade aerodynamics can be used in order to explain some aspects of the phenomenon. It was observed that in deep stall conditions, a vortex is formed at the leading edge; this vortex moves over the airfoil surface with 1/3 of the airfoil speed and then is shed at the trailing edge. After its shedding, the vortex can interact with the airfoil surface as the blade passes downstream.

  11. Dynamic analysis of Darrieus vertical axis wind turbine rotors

    SciTech Connect

    Lobitz, D.W.

    1981-05-01

    The dynamic response characteristics of the VAWT rotor are important factors governing the safety and fatique life of VAWT systems. The principal problems are the determination of critical rotor speeds (resonances) and the assessment of forced vibration response amplitudes. The solution to these problems is complicated by centrifugal and Coriolis effects which can have substantial influence on rotor resonant frequencies and mode shapes. This paper will describe and discuss the primary tools now in use at Sandia National Laboratories for rotor analysis. These tools include a lumped spring-mass model (VAWTDYN) and also finite-element based approaches. The discussion will center on the accuracy and completeness of current capabilities and plans for future research. As this paper is meant primarily to provide an overview, much of the detail is omitted and will be presented in a follow-on report.

  12. Residual stresses in darrieus vertical axis wind turbine blades

    SciTech Connect

    Veers, P.

    1981-04-01

    A numerical package called RESID has been assembled to calculate the residual stresses in VAWT blades induced during cold forming. Using a strength of materials - elementary beam theory approach, RESID models the material response with a bilinear stress-strain curve, and the cross-sectional geometry with an array of area increments. Through an iterative solution procedure residual stresses are predicted for a specified final radius of curvature or applied bending moment. RESID results are compared to theoretical solutions for simple geometries and with MARC Finite element results for VAWT blade geometries. Calculating residual stress levels, determining acceptable residual stress levels, and a method of reducing residual stresses are discussed. A complete listing and sample run are included in the appendicies.

  13. Dynamic analysis of Darrieus vertical axis wind turbine rotors

    SciTech Connect

    Lobitz, D.W.

    1981-01-01

    The dynamic response characteristics of the VAWT rotor are important factors governing the safety and fatigue life of VAWT systems. The principal problems are the determination of critical rotor speeds (resonances) and the assessment of forced vibration response amplitudes. The solution to these problems is complicated by centrifugal and coriolis effects which can have substantial influence on rotor resonant frequencies and mode shapes. This paper will describe and discuss the primary tools now in use at Sandia National Laboratories for rotor analysis. These tools include a lumped springmass model (VAWTDYN) and also finite-element based approaches. The discussion will center on the accuracy and completeness of current capabilities and plans for future research.

  14. User's manual for the vertical axis wind turbine performance...

    Office of Scientific and Technical Information (OSTI)

    Close Cite: Bibtex Format Close 0 pages in this document matching the terms "" Search For Terms: Enter terms in the toolbar above to search the full text of this document for ...

  15. Innovative Offshore Vertical-Axis Wind Turbine Rotors

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    and Application Center for Hydrogen Energy Research Programs ARPA-E Basic Energy Sciences ... Sea State Contour) Code Online Abstracts and Reports Water Power Personnel ...

  16. Sandia and Partners Complete Phase I of a Vertical-Axis Deep...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    I of a Vertical-Axis Deep-Water Offshore Turbine Study - Sandia Energy Energy Search Icon ... Sandia and Partners Complete Phase I of a Vertical-Axis Deep-Water Offshore Turbine Study ...

  17. Design and analysis of a vertical axis ocean current power plant

    SciTech Connect

    Richard, C.C.; Hartzog, J.R.; Sorge, R.V.; Quigley, J.V.; Adams, G.R.

    1981-01-01

    This paper discusses a calculation of the power generated by a vertical axis ocean current power plant. An analytical model is presented and a computer solution described. Results of the calculation show the optimum angles of the blades about the vertical axis to maximize power output, as well as the total extractable power of the plant for various ocean current velocities. Tow tank tests are described for a scale model of the plant.

  18. TMA Global Wind Energy Systems | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Zip: 82001 Sector: Wind energy Product: Involved in the development, manufacture, and marketing of vertical axis wind energy turbines and hybrid energy systems. References: TMA...

  19. Measurements of television interference caused by a vertical-axis wind machine. Final subcontract report

    SciTech Connect

    Sengupta, D L; Senior, T B.A.; Ferris, J E

    1983-01-01

    The electromagnetic interference to television reception caused by the 17 m Darreius at Albuquerque, NM, has been studied by carrying out measurements at a number of sites in the vicinity of the VAWT. The rf sources used were the commercial vhf and uhf TV signals available in the area. Ambient field-strength measurements showed that the signals on all TV channels except one were strong, and provided good reception at all test sites. With the antenna (properly) oriented for maximum direct signal, unacceptable interference was observed on some channels at sites out to 33 m from the WT in the forward and backward regions. With the antenna beam directed at the WT, interference varying from slight to violent were observed at all sites on some or all TV channels. A simple theoretical model has been developed for analyzing the TVI produced by a VAWT like the Darrieus. Using the model in conjunction with measured data, an approximate expression for the equivalent scattering area A of the Darrieus has been developed. It is found that A is wavelength (lambda) dependent and varies as lambda/sup 1/2/.

  20. Automatic-control system for the 17-metre vertical-axis wind turbine (VAWT)

    SciTech Connect

    McNerney, G.M.

    1980-03-01

    The 17-metre DOE/Sandia VAWT began operation in March 1977. Since that time the turbine has been operated strictly by manual control for the purpose of data acquisition and performance analysis; this procedure has limited the VAWT operation time and power output. An automatic-control system has been designed and implemented to study automatic control of a VAWT and to better judge the fatigue life and reliability of the VAWT under what will be normal operating conditions for power production. This system, including the necessary hardware, is discussed in detail along with a simplified cost analysis.

  1. Aeroelastic Modeling of Large Off-shore Vertical-axis Wind Turbines...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... The blades may be affixed to the tower at their ends as in the Darrieus and V-VAWT ... of generating VAWTs of arbitrary geometry, including H, V, and Darrieus configurations. ...

  2. User's manual for the vertical axis wind turbine performance computer code darter

    SciTech Connect

    Klimas, P. C.; French, R. E.

    1980-05-01

    The computer code DARTER (DARrieus, Turbine, Elemental Reynolds number) is an aerodynamic performance/loads prediction scheme based upon the conservation of momentum principle. It is the latest evolution in a sequence which began with a model developed by Templin of NRC, Canada and progressed through the Sandia National Laboratories-developed SIMOSS (SSImple MOmentum, Single Streamtube) and DART (SARrieus Turbine) to DARTER.

  3. Computer subroutine for estimating aerodynamic blade loads on Darrieus vertical axis wind turbines. [FORCE code

    SciTech Connect

    Sullivan, W. N.; Leonard, T. M.

    1980-11-01

    An important aspect of structural design of the Darrieus rotor is the determination of aerodynamic blade loads. This report describes a load generator which has been used at Sandia for quasi-static and dynamic rotor analyses. The generator is based on the single streamtube aerodynamic flow model and is constructed as a FORTRAN IV subroutine to facilitate its use in finite element structural models. Input and output characteristics of the subroutine are described and a complete listing is attached as an appendix.

  4. Vertax Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    RH2 7LD Sector: Wind energy Product: Vertax is a British company that develops vertical axis wind turbines Coordinates: 48.231575, -101.134114 Show Map Loading map......

  5. Energy age wind ltd Co KG | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    48291 Sector: Wind energy Product: Energy-age-wind aims to develop small scale vertical-axis wind turbines. References: energy-age-wind ltd & Co. KG1 This article is a stub....

  6. Wind power 85

    SciTech Connect

    Not Available

    1985-01-01

    This book presents the papers given at a conference on wind turbines. Topics considered at the conference included resource assessment, wind tunnels, performance testing, aerodynamics, turbulence, fatigue, electric generators, wind loads, horizontal axis turbines, vertical axis turbines, Darrieus rotors, wind-powered pumps, economics, environmental impacts, national and international programs, field tests, flow models, feasibility studies, turbine blades, speed regulators, and airfoils.

  7. Wind power 85

    SciTech Connect

    Not Available

    1985-01-01

    This book presents the papers given at a conference on wind turbines. Topics considered at the conference included resource assessment, wind tunnel testing, vertical axis turbines, wind turbine generators, aerodynamics, airfoils, wind loads, Darrieus rotors, economics, legislation, regulations, environmental impacts, national and international programs, fatigue testing, and horizontal axis turbines.

  8. Vertical axis windmill: Performance evaluation and estimation of energy output with Darrieus turbines

    SciTech Connect

    Braga, S.L.; Orlando, A.F.; Saboya, F.E.M.

    1983-12-01

    The growing demand for renewable energy resources gave rise to practically rediscovering the Darrieus wind turbine in the sixties. The economic feasibility of its utilization however is dependend upon the local wind energy and the knowledge of the performance of the turbine under different operating conditions. Several turbines have been tested in this research for different values of the solidity, which is related to the mass of the turbine blade. A method has been developed to determine the performance of small wind rotors, which can be done in small wind tunnels. This methodology significantly reduces testing time and research costs, besides providing a continuous function for the power coefficient, that is, the fraction of the wind energy that can be extracted by the turbine. By using power coefficient and wind velocity data, a numerical simulation of the performance of the turbines is carried out for one year period, under a constant speed operating condition; for two cities in Brazil. The equipment operates in this condition with simple controls and generates electric energy at constant frequency. The experimental performance data were found to closely fit those of Blackwell, Sheldahl and Feltz.

  9. User's manual for the vertical axis wing turbine code VDART2

    SciTech Connect

    Strickland, J.H.; Smith, T.; Sun, K.

    1981-09-01

    This user's manual provides details on the Darrieus wind turbine aerodynamic performance/loads prediction computer code, VDART2. The code is the latest generation of vortex-based models and includes the effects of dynamic stall, pitching circulation, and added mass.

  10. Sixth biennial wind energy conference and workshop

    SciTech Connect

    Glenn, B.H.

    1984-01-01

    This book presents the papers given at the Sixth Biennial Wind Energy Conference and Workshop held in Minneapolis/St. Paul in 1983. Topics considered include the US wind energy program (e.g., the vertical axis wind turbine program, the SERI program), international wind energy programs (e.g., Netherlands, UK, Norway), large wind systems (e.g. Mod-2 wind turbine development), small wind systems (e.g. wind powered heating systems), vertical axis wind systems (e.g. advanced Darrieus wind turbines), advanced concepts (e.g. giromill rotors), community and wind farm applications (e.g. utility-owned wind turbines), aerodynamics and wakes, wind characteristics, wind turbine performance and testing, safety and environment, stand-alone systems, dynamic analysis, utility interconnection, and other applications and considerations such as the double output induction generator.

  11. Comparison of field and wind tunnel Darrieus wind turbine data

    SciTech Connect

    Sheldahl, R.E.

    1981-01-01

    A 2-m-dia Darrieus Vertical Axis Wind Turbine with NACA-0012 blades was extensively tested in the Vought Corporation Low Speed Wind Tunnel. This same turbine was installed in the field at the Sandia National Laboratories Wind Turbine Test Site and operated to determine if field data corresponded to data obtained in the wind tunnel. It is believed that the accuracy of the wind tunnel test data was verified and thus the credibility of that data base was further established.

  12. Wind ripple analysis

    SciTech Connect

    Akins, R.E.

    1981-01-01

    Efficient and economical utilization of wind power will require the ability to measure and ultimately predict the effects fluctuations in the incident wind will have on a wind turbine. In order to quantitatively assess these effects, experimental techniques have been developed which allow analysis of full-scale performance of wind turbines with particular emphasis on the effects caused by turbulence in the incident wind. Examples of these techniques are presented using data from the DOE/Sandia Vertical Axis Wind Turbine (VAWT) program.

  13. Finite element analysis and modal testing of a rotating wind turbine

    SciTech Connect

    Carne, T.G.; Lobitz, D.W.; Nord, A.R.; Watson, R.A.

    1982-05-10

    A finite element procedure, which includes geometric stiffening, and centrifugal and Coriolis terms resulting from the use of a rotating coordinate system, has been developed to compute the mode shapes and frequencies of rotating structures. Special application of this capability has been made to Darrieus, vertical axis wind turbines. In a parallel development effort, a technique for the modal testing of a rotating vertical axis wind turbine has been established to measure modal parameters directly. Results from the predictive and experimental techniques for the modal frequencies and mode shapes are compared over a wide range of rotational speeds.

  14. Finite-element analysis and modal testing of a rotating wind turbine

    SciTech Connect

    Carne, T.G.; Lobitz, D.W.; Nord, A.R.; Watson, R.A.

    1982-10-01

    A finite element procedure, which includes geometric stiffening, and centrifugal and Coriolis terms resulting from the use of a rotating coordinate system, has been developed to compute the mode shapes and frequencies of rotating structures. Special application of this capability has been made to Darrieus, vertical axis wind turbines. In a parallel development effort, a technique for the modal testing of a rotating vertical axis wind turbine has been established to measure modal parameters directly. Results from the predictive and experimental techniques for the modal frequencies and mode shapes are compared over a wide range of rotational speeds.

  15. Design of 9-meter carbon-fiberglass prototype blades : CX-100 and TX-100 : final project report.

    SciTech Connect

    Berry, Derek

    2007-09-01

    TPI Composites, Inc. (TPI), Global Energy Concepts, LLC (GEC), and MDZ Consulting (MDZ) have collaborated on a project to design, manufacture, and test prototype carbon-fiberglass hybrid wind turbine blades of 9-m length. The project, funded by Sandia National Laboratories, involves prototype blades in both conventional (unidirectional spar fibers running along the blade span) and ''adaptive'' (carbon fibers in off-axis orientation to achieve bend-twist-coupling) configurations. After manufacture, laboratory testing is being conducted to determine the static and fatigue strength of the prototypes, in conjunction with field testing to evaluate the performance under operational conditions.

  16. Wind energy for irrigation: wind-assisted pumping from wells. Final report

    SciTech Connect

    Clark, R.N.; Schneider, A.D.; Nelson, V.; Gilmore, E.; Barieau, R.E.

    1981-01-01

    Work is reported on a project whose objectives were: to assemble a complete wind-powered pumping system for irrigation wells in the Southern Great Plains; to adapt or modify existing pumping equipment so that it could effectively be powered by a vertical-axis wind turbine; to develop a data collection system for collecting, recording and processing on-site wind data and mechanical, electrical and hydraulic systems data; to combine data from all systems in an overall analysis that will permit an engineering evaluation of the complete system; to develop a dynamic mathematical model of the pumping system which includes the most appropriate model of the vertical-axis wind turbine; and to make an economic analysis of the wind-powered pumping system and construct a model for predicting the economics of such systems in general. The pumping system uses both a vertical-axis, or Darrieus, wind turbine designed to produce 40 kW in a 15 m/s wind and an electric motor to power a conventional vertical-turbine irrigation pump. The wind turbine furnishes power to the pump only when the windspeed exceeds 6 m/s and is used to reduce the load on the electric motor rather than to replace the motor. The wind-assisted pumping system and its operation are described, as is the data collection system, and the results of the performance data analysis for the wind turbine and the pumping system are discussed. The system's annual energy output is predicted, and the economics are analyzed. (LEW)

  17. Establishing a Comprehensive Wind Energy Program

    SciTech Connect

    Fleeter, Sanford

    2012-09-30

    This project was directed at establishing a comprehensive wind energy program in Indiana, including both educational and research components. A graduate/undergraduate course ME-514 - Fundamentals of Wind Energy has been established and offered and an interactive prediction of VAWT performance developed. Vertical axis wind turbines for education and research have been acquired, instrumented and installed on the roof top of a building on the Calumet campus and at West Lafayette (Kepner Lab). Computational Fluid Dynamics (CFD) calculations have been performed to simulate these urban wind environments. Also, modal dynamic testing of the West Lafayette VAWT has been performed and a novel horizontal axis design initiated. The 50-meter meteorological tower data obtained at the Purdue Beck Agricultural Research Center have been analyzed and the Purdue Reconfigurable Micro Wind Farm established and simulations directed at the investigation of wind farm configurations initiated. The virtual wind turbine and wind turbine farm simulation in the Visualization Lab has been initiated.

  18. Wind turbine spoiler

    DOEpatents

    Sullivan, W.N.

    An aerodynamic spoiler system for a vertical axis wind turbine includes spoilers on the blades initially stored near the rotor axis to minimize drag. A solenoid latch adjacent the central support tower releases the spoilers and centrifugal force causes the spoilers to move up the turbine blades away from the rotor axis, thereby producing a braking effect and actual slowing of the associated wind turbine, if desired. The spoiler system can also be used as an infinitely variable power control by regulated movement of the spoilers on the blades over the range between the undeployed and fully deployed positions. This is done by the use of a suitable powered reel and cable located at the rotor tower to move the spoilers.

  19. Wind turbine spoiler

    DOEpatents

    Sullivan, William N.

    1985-01-01

    An aerodynamic spoiler system for a vertical axis wind turbine includes spoilers on the blades initially stored near the rotor axis to minimize drag. A solenoid latch adjacent the central support tower releases the spoilers and centrifugal force causes the spoilers to move up the turbine blades away from the rotor axis, thereby producing a braking effect and actual slowing of the associated wind turbine, if desired. The spoiler system can also be used as an infinitely variable power control by regulated movement of the spoilers on the blades over the range between the undeployed and fully deployed positions. This is done by the use of a suitable powered reel and cable located at the rotor tower to move the spoilers.

  20. Aeroelastic stability analysis of a Darrieus wind turbine

    SciTech Connect

    Popelka, D.

    1982-02-01

    An aeroelastic stability analysis has been developed for predicting flutter instabilities on vertical axis wind turbines. The analytical model and mathematical formulation of the problem are described as well as the physical mechanism that creates flutter in Darrieus turbines. Theoretical results are compared with measured experimental data from flutter tests of the Sandia 2 Meter turbine. Based on this comparison, the analysis appears to be an adequate design evaluation tool.

  1. Wind, pumps, and desalination

    SciTech Connect

    Theyse, F.H.

    1980-12-01

    Worldwide there exists an increasing need for waterpumping. Functions to be served include control of waterlevel, irrigation, reclamation of soil, control of a watertable in general. Specifically in the developing countries with their still underdeveloped infrastructure this need increases rapidly. For this pumping energy is needed, energy of high exergy to drive the pumps. With the increasing costs of fossil fuels and electricity, there is ample reason to investigate the potential of wind anew. A two-bladed fixed-rotor WECS, driving screwpumps via an automotive geartrain proves to offer a very reliable, fail-safe and self-optimizing solution for up to about 200 kW power, providing water at a cost of 4 to 6 dollarcents per kWh of water pumped. This is very favorable, compared to other means. Using the same concept to drive an adapted water-brake, it proves that desalination via the multiple-flash evaporisation route also becomes a self-optimizing, fail-safe, cheap and reliable operation, providing fresh water at less than 3 dollars per m/sup 3/, under the worst conditions. This is not only of importance to the developing countries with their sparse water supply, but even more for the industrialised countries, where lack of adequate water is an increasing problem. Costs can get substantially below the level indicated. It proves, that for this type of operations at acceptable costs, vertical axis windmills are basically unsuited. Although the horizontal axis machines need provisions to follow the wind, such provisions prove far cheaper in their effect on energy costs, then the controls and/or loss in power coefficient of vertical axis machines.

  2. Jet spoiler arrangement for wind turbine

    DOEpatents

    Cyrus, Jack D.; Kadlec, Emil G.; Klimas, Paul C.

    1985-01-01

    An air jet spoiler arrangement is provided for a Darrieus-type vertical axis wind-powered turbine. Air is drawn into hollow turbine blades through air inlets at the ends thereof and is ejected in the form of air jets through small holes or openings provided along the lengths of the blades. The air jets create flow separation at the surfaces of the turbine blades, thereby inducing stall conditions and reducing the output power. A feedback control unit senses the power output of the turbine and controls the amount of air drawn into the air inlets accordingly.

  3. Jet spoiler arrangement for wind turbine

    SciTech Connect

    Cyrus, J.D.; Kadlec, E.G.; Klimas, P.C.

    1983-09-15

    An air jet spoiler arrangement is provided for a Darrieus-type vertical axis wind-powered turbine. Air is drawn into hollow turbine blades through air inlets at the end thereof and is ejected in the form of air jets through small holes or openings provided along the lengths of the blades. The air jets create flow separation at the surfaces of the turbine blades, thereby including stall conditions and reducing the output power. A feedback control unit senses the power output of the turbine and controls the amount of air drawn into the air inlets accordingly.

  4. Jet spoiler arrangement for wind turbine

    SciTech Connect

    Cyrus, J. D.; Kadlec, E. G.; Klimas, P. C.

    1985-03-12

    An air jet spoiler arrangement is provided for a Darrieus-type vertical axis wind-powered turbine. Air is drawn into hollow turbine blades through air inlets at the ends thereof and is ejected in the form of air jets through small holes or openings provided along the lengths of the blades. The air jets create flow separation at the surfaces of the turbine blades, thereby inducing stall conditions and reducing the output power. A feedback control unit senses the power output of the turbine and controls the amount of air drawn into the air inlets accordingly.

  5. SERI Advanced and Innovative Wind-Energy-Concepts Program

    SciTech Connect

    Mitchell, R.L.; Jacobs, E.W.

    1983-06-01

    In 1978 the Solar Energy Research Institute (SERI) was given the responsibility of managing the Advanced and Innovative Wind Energy Concepts (AIWEC) Task by the US Department of Energy (DOE). The objective of this program has been to determine the technical and economic potential of advanced wind energy concepts. Assessment and R and D efforts in the AIWEC program have included theoretical performance analyses, wind tunnel testing, and/or costing studies. Concepts demonstrating sufficient potential undergo prototype testing in a Proof-of-Concept research phase. Several concepts, such as the Dynamic Inducer, the Diffuser Augmented wind Turbine, the Electrofluid Dynamic Wind-Driven Generator, the Passive Cyclic Pitch concept, and higher performance airfoil configurations for vertical axis wind turbines, have recently made significant progress. The latter has currently reached the Proof-of-Concept phase. The present paper provides an overview of the technical progress and current status of these concepts.

  6. Wind machine propellers - study of prototypes in steady state regime - non-steady state aspects (helices eoliennes - etude de prototypes en regime stationnaire - aspects instationnaires)

    SciTech Connect

    Leblanc, L.; de Saint Louvent, B.; Goethals, R.

    1981-11-01

    Presented is the theoretical examination of wind power machines and results of experiments undertaken at the Poitiers Aerodynamics Laboratory and the Studies and Research Establishment of the National Weather Service. The program included models exposed to steady flow and results were satisfactory for both horizontal axis and vertical axis wind machines. In addition, a study of the effects of variable flow upon wind energy was commenced. A prototype (Darrieus type) was tested both in situ and in the wind tunnel in order to initiate a preliminary evaluation of the effects of wind fluctuations, and compare them. First results are very promising so that more fully instrumented experimentation will be continued.

  7. Aerodynamic interference between two Darrieus wind turbines

    SciTech Connect

    Schatzle, P.R.; Klimas, P.C.; Spahr, H.R.

    1980-01-01

    The effect of aerodynamic interference on the performance of two curved bladed Darrieus-type vertical axis wind turbines has been calculated using a vortex/lifting line aerodynamic model. The turbines have a tower-to-tower separation distance of 1.5 turbine diameters, with the line of turbine centers varying with respect to the ambient wind direction. The effects of freestream turbulence were neglected. For the cases examined, the calculations showed that the downwind turbine power decrement (1) was significant only when the line of turbine centers was coincident with the ambient wind direction, (2) increased with increasing tip-speed-ratio, and (3) is due more to induced flow angularities downstream than to speed deficits near the downstream turbine.

  8. Aerodynamic interference between two Darrieus wind turbines

    SciTech Connect

    Schatzle, P.R.; Klimas, P.C.; Spahr, H.R.

    1981-04-01

    The effect of aerodynamic interference on the performance of two curved bladed Darrieus-type vertical axis wind turbines has been calculated using a vortex/lifting line aerodynamic model. The turbines have a tower-to-tower separation distance of 1.5 turbine diameters, with the line of turbine centers varying with respect to the ambient wind direction. The effects of freestream turbulence were neglected. For the cases examined, the calculations showed that the downwind turbine power decrement (1) was significant only when the line of turbine centers was coincident with the ambient wind direction, (2) increased with increasing tipspeed ratio, and (3) is due more to induced flow angularities downstream than to speed deficits near the downstream turbine.

  9. Wind Turbine Blade Design | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Fabric Wind Turbine Blade Design Offers Clean Energy Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window) Click to share on Tumblr (Opens in new window) Fabric Wind Turbine Blade Design Offers Clean Energy Today, conventional wind turbine blade designs use fiberglass, which is heavy and the manufacturing process is extremely hands-on and time intensive. A new approach

  10. Impact of the temperature dependency of fiberglass insulation R-value on cooling energy use in buildings

    SciTech Connect

    Levinson, R.; Akbari, H.; Gartland, L.

    1996-08-01

    Building energy models usually employ a constant, room-temperature-measured value for the thermal resistance of fiberglass roof insulation. In summer, however, the mean temperature of roof insulation can rise significantly above room temperature, lowering the insulation`s thermal resistance by 10% to 20%. Though the temperature dependence of the thermal resistance of porous materials like fiberglass has been extensively studied, it is difficult to theoretically predict the variation with temperature of a particular fiberglass blanket, from first principles. Heat transfer within fiberglass is complicated by the presence of three significant mechanisms - conduction through air, conduction through the glass matrix, and radiative exchange within the matrix - and a complex, unknown internal geometry. Purely theoretical models of fiberglass heat transfer assume highly simplified matrix structures and require typically-unavailable information about the fiberglass, such as its optical properties. There is also a dearth of useful experimental data. While the thermal resistances of many individual fiberglass samples have been measured, there is only one practical published table of thermal resistance vs. both temperature and density. Data from this table was incorporated in the DOE-2 building energy model. DOE-2 was used to simulate the roof surface temperature, roof heat flux, and cooling energy consumption of a school bungalow whose temperature and energy use had been monitored in 1992. The DOE-2 predictions made with and without temperature variation of thermal conductivity were compared to measured values. Simulations were also run for a typical office building. Annual cooling energy loads and annual peak hourly cooling powers were calculated for the office building using both fixed and variable thermal conductivities, and using five different climates. The decrease in the R-value of the office building`s roof led to a 2% to 4% increase in annual cooling energy load.

  11. PowerPoint Presentation

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    FLOATING OFFSHORE VERTICAL AXIS WIND TURBINE PROJECT D. Todd ...energy.sandia.govenergyrenewable-energywind-poweroffshore-windinnovative-offshore-vertical-axis-wind-turbine-rotors...

  12. Rotationally sampled wind characteristics and correlations with MOD-OA wind turbine response

    SciTech Connect

    George, R.L.; Connell, J.R.

    1984-09-01

    This report presents results of a comprehensive wind and wind turbine measurement program: the Clayton, New Mexico, vertical plane array/MOD-OA project. In this experiment, the turbulent wind was measured for a large array of fixed anemometers located two blade diameters upwind of a 200-kW horizontal-axis wind turbine (HAWT). Simultaneously, key wind turbine response parameters were also measured. The first of two major objectives of this experiment was to determine the turbulent wind, rotationally sampled to emulate the motion of the wind turbine blade, for the range of different wind speeds and stability classes actually experienced by the wind turbine. The second major objective was to correlate this rotationally sampled wind with the wind turbine blade stress and power, in order to assess the usefulness of the wind measurements for wind turbine loads testing a prediction. Time series of rotationally sampled winds and wind turbine blade bending moments and power were converted to frequency spectra using Fourier transform techniques. These spectra were used as the basis for both qualitative and quantitative comparisons among the various cases. A quantitative comparison between the rotationally sampled wind input and blade bending response was made, using the Fourier spectra to estimate the blade transfer function. These transfer functions were then used to calculate an approximate damping coefficient for the MOD-OA fiberglass blade.

  13. Darrieus rotor aerodynamics in turbulent wind

    SciTech Connect

    Brahimi, M.T.; Paraschivoiu, I.

    1995-05-01

    The earlier aerodynamic models for studying vertical axis wind turbines (VAWT`s) are based on constant incident wind conditions and are thus capable of predicting only periodic variations in the loads. The purpose of the present study is to develop a model capable of predicting the aerodynamic loads on the Darrieus rotor in a turbulent wind. This model is based on the double-multiple streamtube method (DMS) and incorporates a stochastic wind model. The method used to simulate turbulent velocity fluctuations is based on the power spectral density. The problem consists in generating a region of turbulent flow with a relevant spectrum and spatial correlation. The first aerodynamic code developed is based on a one-dimensional turbulent wind model. However, since this model ignores the structure of the turbulence in the crossflow plane, an extension to three dimensions has been made. The computer code developed, CARDAAS, has been used to predict aerodynamic loads for the Sandia-17m rotor and compared to CARDAAV results and experimental data. Results have shown that the computed aerodynamic loads have been improved by including stochastic wind into the aerodynamic model.

  14. The development of CACTUS : a wind and marine turbine performance simulation code.

    SciTech Connect

    Barone, Matthew Franklin; Murray, Jonathan

    2010-12-01

    CACTUS (Code for Axial and Cross-flow TUrbine Simulation) is a turbine performance simulation code, based on a free wake vortex method, under development at Sandia National Laboratories (SNL) as part of a Department of Energy program to study marine hydrokinetic (MHK) devices. The current effort builds upon work previously done at SNL in the area of vertical axis wind turbine simulation, and aims to add models to handle generic device geometry and physical models specific to the marine environment. An overview of the current state of the project and validation effort is provided.

  15. Terrain and Ambient Wind Effects on the Warming Footprint of a Wind Machine

    SciTech Connect

    Mcmeeking, Gavin R.; Whiteman, Charles D.; Powell, Stuart G.; Clements, Craig B.

    2002-05-20

    An experiment in a vineyard in south-central Washington is described in which a vineyard wind machine used for frost protection was turned on and off while monitoring the air temperature in the vineyard. The wind machine fan, with a hub height of 12 m, rotated around a quasi-horizontal axis that was tilted downward into the vineyard at an angle of 6 degrees. The fan also rotated around a vertical axis once every 4 minutes to protect a roughly circular area surrounding the wind machine tower. A temperature inversion of about 3.5 C occurred above the vineyard between the 3-m and hub-height levels during the experiments. The 300-m diameter warming footprint of the fan was displaced down the south-facing 1-2{sup o} slope of the vineyard when the ambient wind speed was low, showing the effect of the weak and shallow nighttime drainage flow that often occurred in the vineyard. When the ambient wind speed increased, the footprint was displaced downwind and downslope of the tower. The mean warming footprint magnitude when the fan was switched on was about 1-2 C, and the temperature excess in the footprint relative to the surroundings dissipated quickly when the fan was switched off.

  16. SAND88-1807

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    oriented, 34-meter diameter, Darrieus vertical axis wind turbine near Bushland, Texas. ... Page . EXPERIMENT ......

  17. Darrieus wind-turbine performance and weight-scaling calculations. Final report

    SciTech Connect

    Lapin, E.E.

    1980-04-01

    The distribution of weight by component in three existing vertical axis wind turbines is briefly tabulated. An approach is given for studying Darrieus machine element weights, accounting for the several possible operating regimes and the maximum forces generated in these regimes which produce loads imposed on the blades and the reactions on the interfacing elements. The approach taken is to develop a means for analysis of the dominating load creating member, the blades, and a means for analysis of aerodynamic performance under a typical distribution of wind velocity. Then the blade structural loading is determined for appropriate designs for the conditions of use including the blades at rest in maximum winds. Computational results of the investigation are graphed. (LEW)

  18. MHK Technologies/Vertical Axis Venturi System | Open Energy Informatio...

    OpenEI (Open Energy Information) [EERE & EIA]

    Primary Organization Warrior Girl Corporation Technology Type Click here Axial Flow Turbine Technology Description The proprietary venturi system uses two venturies one on the...

  19. Spin-stabilized magnetic levitation without vertical axis of rotation

    DOEpatents

    Romero, Louis; Christenson, Todd; Aaronson, Gene

    2009-06-09

    The symmetry properties of a magnetic levitation arrangement are exploited to produce spin-stabilized magnetic levitation without aligning the rotational axis of the rotor with the direction of the force of gravity. The rotation of the rotor stabilizes perturbations directed parallel to the rotational axis.

  20. Flow augmenters for vertical-axis windmills and turbines

    SciTech Connect

    Evans, F.C.

    1981-03-10

    A windmill is disclosed, the windmill including a vertical shaft mounted for rotation about its longitudinal axis, a number of blades spaced circumferentially around the longitudinal axis, and being disposed generally parallel to the axis of rotation of the vertical shaft, and supporting arms extending radially outwardly from the vertical shaft for supporting the blades. The windmill also includes a first member connected to an upper end of one of the blades and defining a first surface having a leading edge with respect to the direction of movement of the blade and a trailing edge rearward of the leading edge, the leading edge being lower than the trailing edge. The first surface also includes an inside lateral edge and an outer lateral edge spaced radially outwardly from the inside lateral edge, the inside lateral edge being higher than the outer lateral edge. A second member is connected to the lower end of the blade and defines a second surface, the second surface having a leading edge with respect to the direction of movement of the blade and a trailing surface rearward of the second surface leading edge, the second surface leading edge being higher than the trailing edge. The second surface also includes an inside lateral edge and an outer lateral edge spaced radially outwardly from the second surface inside lateral edge, the second surface inside lateral edge being lower than the second surface outside lateral edge.

  1. ANALYSIS OF VAPORS FROM METHYLENE CHLORIDE EXTRACTS OF NUCLEAR GRADE HEPA FILTER FIBERGLASS SAMPLES

    SciTech Connect

    FRYE JM; ANASTOS HL; GUTIERREZ FC

    2012-06-07

    While several organic compounds were detected in the vapor samples used in the reenactment of the preparation of mounts from the extracts of nuclear grade high-efficiency particulate air filter fiberglass samples, the most significant species present in the samples were methylene chloride, phenol, phenol-d6, and 2-fluorophenol. These species were all known to be present in the extracts, but were expected to have evaporated during the preparation of the mounts, as the mounts appeared to be dry before any vapor was collected. These species were present at the following percentages of their respective occupational exposure limits: methylene chloride, 2%; phenol, 0.4%; and phenol-d6, 0.6%. However, there is no established limit for 2-fluorophenol. Several other compounds were detected at low levels for which, as in the case of 2-fluorophenol, there are no established permissible exposure limits. These compounds include 2-chlorophenol; N-nitroso-1-propanamine; 2-fluoro-1,1{prime}-biphenyl; 1,2-dihydroacenaphthylene; 2,5-cyclohexadiene-1,4-dione,2,6-bis(1,1-dimethylethyl); trimethyl oxirane; n-propylpropanamine; 2-(Propylamino)ethanol; 4-methoxy-1-butene; 6-methyl-5-hepten-2-one; and 3,4-dimethylpyridine. Some of these were among those added as surrogates or spike standards as part ofthe Advanced Technologies and Laboratories International, Inc. preparation ofthe extract of the HEPA filter media and are indicated as such in the data tables in Section 2, Results; other compounds found were not previously known to be present. The main inorganic species detected (sulfate, sodium, and sulfur) are also consistent with species added in the preparation of the methylene chloride extract of the high-efficiency particulate air sample.

  2. Reduction in the thermal resistance (R-value) of loose-fill insulation and fiberglass batts due to compression

    SciTech Connect

    Yarbrough, D.W.; Wright, J.H.

    1981-04-01

    A method is presented for calculating the thickness reduction of loose-fill insulations and fiberglass batts that result from compressive forces exerted by additional insulation. The thickness reduction is accompanied by an increase in density and a reduction in the R value of the compressed layer. Calculations for thermal resistance of two layers of insulation are given. Information in 4 appendices includes: identification of products tested (products from 3 companies); experimental values for thickness as a function of loading; Fortran programs and output; and calculated R values for stacked insulations. (MCW)

  3. West Winds Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Winds Wind Farm Jump to: navigation, search Name West Winds Wind Farm Facility West Winds Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  4. Control algorithms for effective operation of variable-speed wind turbines

    SciTech Connect

    Not Available

    1993-10-01

    This report describes a computer code, called ASYM and provides results from its application in simulating the control of the 34-m Test Bed vertical-axis wind turbine (VAWT) in Bushland, Texas. The code synthesizes dynamic wind speeds on a second-by-second basis in the time domain. The wind speeds conform to a predetermined spectral content governed by the hourly average wind speed that prevails at each hour of the simulation. The hourly average values are selected in a probabilistic sense through the application of Markov chains, but their cumulative frequency of occurrence conforms to a Rayleigh distribution that is governed by the mean annual wind speed of the site selected. The simulated wind speeds then drive a series of control algorithms that enable the code to predict key operational parameters such as number of annual starts and stops, annual energy production, and annual fatigue damage at a critically stressed joint on the wind turbine. This report also presents results from the application of ASYM that pertain to low wind speed cut-in and cut-out conditions and controlled operation near critical speed ranges that excite structural vibrations that can lead to accelerated fatigue damage.

  5. Wind Integration

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Generation - ScheduledActual Balancing Reserves - Deployed Near Real-time Wind Animation Wind Projects under Review Growth Forecast Fact Sheets Working together to address...

  6. Prairie Winds Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Farm Jump to: navigation, search Name Prairie Winds Wind Farm Facility Prairie Winds Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  7. Stand-alone irrigation pumping with wind energy

    SciTech Connect

    Clark, R.N.

    1982-12-01

    Windpower is one of the oldest forms of energy used for pumping water. Several thousand windmills are still used today to provide water for livestock and domestic needs. Because of the large water volume needed for irrigation, irrigators have selected natural gas, electricity, or diesel fuel as power sources for their irrigation pump. Wind turbines have been successfully used to generate electricity to supplement electrical requirements of irrigation systems; however, not all irrigation pumps have electricity readily available. Because of the need for an independent, high-volume pumping system powered by the wind, the USDA-ARS, Bushland, TX and the Alternative Energy Institute, Canyon, TX have designed and constructed a stand-alone wind-powered pumping system. The initial effort was an in-depth study of all types of pumps in order to locate a pump which could deliver a steady 15-to-20 l/s flow rate while the input power varied in rpm and torque. A progressive-cavity pump was selected as being best for use in moderate and deep well applications where the total head was more than 15 m. A 10-cm progressive-cavity pump was purchased and installed on a 4-kW vertical-axis wind turbine with a mechanical linkage between the wind turbine and pump. Performance data indicated that flow was 10 l/s, and head 12 m at a windspeed of 16 m/s. When the windspeed dropped to 9 m/s, the pumping load caused the wind turbine to stall. Because of the highly variable power output of the wind turbine, no presently-manufactured pump is satisfactory for stand-alone irrigation pumping.

  8. Power coefficient of tornado-type wind turbines

    SciTech Connect

    Rangwalla, A.A.; Hsu, C.T.

    1983-11-01

    In a tornado-type wind turbine the wind collecting tower is equipped with adjustable vanes that can be opened on the windward side and closed on the leeward side. The wind enters the tower tangentially through these open vanes and exits from the top. As a result, a vortex is formed inside the tower. A vertical axis turbine which is located underneath the tower floor admits air vertically and exhausts it into the vortex core. The pressure drop in the vortex core can be high, depending upon the vortex concentration, thus enhancing manyfold the total pressure drop across the turbine. The power coefficient C /SUB p/ of this system depends mainly on how low a pressure can be created in the vortex core. A maximum C /SUB p/ of about 2.5 was obtained by Yen for a spiral shaped tower. This is about 6.25 times the C /SUB p/ of conventional windmills. Analytical studies have been carried out by several investigators to study the C /SUB p/ of this vortex machine. Loth considered the conservation of angular momentum and obtained a C /SUB p/ based on the tower frontal area, which is not impressive.

  9. Darrieus wind-turbine and pump performance for low-lift irrigation pumping. Final report

    SciTech Connect

    Hagen, L.J.; Sharif, M.

    1981-10-01

    In the Great Plains about 15 percent of the irrigation water pumped on farms comes from surface water sources; for the United States as a whole, the figure is about 22 percent. Because of forecast fuel shortages, there is a need to develop alternative energy sources such as wind power for surface water pumping. Specific objectives of this investigation were to: design and assemble a prototype wind-powered pumping system for low-lift (i.e., < 15 m head) irrigation pumping; determine performance of the prototype system; design and test an irrigation system using the wind-powered prototype in a farm application; and determine the size combinations of wind turbines, tailwater pits, and temporary storage reservoirs needed for successful farm application of wind-powered tailwater pumping systems in western Kansas. The power source selected was a two-bladed, 6-m-diameter, 9-m-tall Darrieus vertical-axis wind turbine with 0.10 solidity and 36.1 M/sup 2/ swept area.

  10. Wind Turbine Testing | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Turbine Testing Photo of a large wind turbine blade sticking out of the structural testing laboratory; it is perpendicular to a building at the National Wind Technology Center. A multimegawatt wind turbine blade extends outside of the structural testing facility at the NWTC. PIX #19010 Testing capabilities at the National Wind Technology Center (NWTC) support the installation and testing of wind turbines that range in size from 400 watts to 5.0 megawatts. Engineers provide wind industry

  11. Collegiate Wind Competition Wind Tunnel Specifications | Department...

    Energy Saver

    Wind Tunnel Specifications Collegiate Wind Competition Wind Tunnel Specifications Collegiate Wind Competition Wind Tunnel Specifications Teams competing in the U.S. Department of ...

  12. Wind Simulation

    Energy Science and Technology Software Center

    2008-12-31

    The Software consists of a spreadsheet written in Microsoft Excel that provides an hourly simulation of a wind energy system, which includes a calculation of wind turbine output as a power-curve fit of wind speed.

  13. Wind Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... First Power for SWiFT Turbine Achieved during Recommissioning Facilities, News, Renewable Energy, SWIFT, Wind Energy, Wind News First Power for SWiFT Turbine Achieved during ...

  14. Wind News

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ... Laboratory PV Regional Test Centers Scaled Wind Farm Technology Facility Climate & Earth ...

  15. wind energy

    National Nuclear Security Administration (NNSA)

    5%2A en Pantex to Become Wind Energy Research Center http:nnsa.energy.govfieldofficesnponpopressreleasespantex-become-wind-energy-research-center

  16. Wind News

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ... Wind-turbine blade growth continues to have the largest impact on energy capture and ...

  17. Wind Resource Assessment | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Resource Assessment A map of the United States is color-coded to indicate the high winds at 80 meters. This map shows the wind resource at 80 meters for both land-based and ...

  18. Distributed Wind Research | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    an introduction to distributed wind projects and a brief overview of topics to consider when developing a distributed wind energy ordinance. Distributed Wind Ordinances Photo from Byers and Renier Construction, NREL 18820 Distributed Wind Ordinances The U.S. Department of Energy defines distributed wind projects as: (a) The use of wind turbines, on- or off-grid, at homes, farms and ranches, businesses, public and industrial facilities, or other sites to offset all or a portion of the local

  19. Customized DSP-based vibration measurement for wind turbines

    SciTech Connect

    LaWhite, N.E.; Cohn, K.E.

    1996-12-31

    As part of its Advanced Distributed Monitoring System (ADMS) project funded by NREL, Second Wind Inc. is developing a new vibration measurement system for use with wind turbines. The system uses low-cost accelerometers originally designed for automobile airbag crash-detection coupled with new software executed on a Digital Signal Processor (DSP) device. The system is envisioned as a means to monitor the mechanical {open_quotes}health{close_quotes} of the wind turbine over its lifetime. In addition the system holds promise as a customized emergency vibration detector. The two goals are very different and it is expected that different software programs will be executed for each function. While a fast Fourier transform (FFT) signature under given operating conditions can yield much information regarding turbine condition, the sampling period and processing requirements make it inappropriate for emergency condition monitoring. This paper briefly reviews the development of prototype DSP and accelerometer hardware. More importantly, it reviews our work to design prototype vibration alarm filters. Two-axis accelerometer test data from the experimental FloWind vertical axis wind turbine is analyzed and used as a development guide. Two levels of signal processing are considered. The first uses narrow band pre-processing filters at key fundamental frequencies such as the 1P, 2P and 3P. The total vibration energy in each frequency band is calculated and evaluated as a possible alarm trigger. In the second level of signal processing, the total vibration energy in each frequency band is further decomposed using the two-axis directional information. Directional statistics are calculated to differentiate between linear translations and circular translations. After analyzing the acceleration statistics for normal and unusual operating conditions, the acceleration processing system described could be used in automatic early detection of fault conditions. 9 figs.

  20. Offshore Wind Research | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    A photo of several rows of wind turbines standing in the ocean with the sun overhead. Capabilities NREL's offshore wind turbine research capabilities focus on critical areas that ...

  1. Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Wind The U.S. wind energy industry continued its strong growth in 2015, adding new generating capacity faster than any other source of electricity generation. Get the latest update on the state of the industry in our 2015 Wind Market Reports. The U.S. wind energy industry continued its strong growth in 2015, adding new generating capacity faster than any other source of electricity generation. Get the latest update on the state of the industry in our 2015 Wind Market Reports. The United

  2. Cisco Wind Energy Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Cisco Wind Energy Wind Farm Jump to: navigation, search Name Cisco Wind Energy Wind Farm Facility Cisco Wind Energy Sector Wind energy Facility Type Commercial Scale Wind Facility...

  3. Wind Power

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Power As the accompanying map of New Mexico shows, the best wind power generation potential near WIPP is along the Delaware Mountain ridge line of the southern Guadalupe ...

  4. Wind Farm

    Energy.gov [DOE]

    The wind farm in Greensburg, Kansas, was completed in spring 2010, and consists of ten 1.25 megawatt (MW) wind turbines that supply enough electricity to power every house, business, and municipal...

  5. Wind Easements

    Energy.gov [DOE]

    The statutes authorizing the creation of wind easements include several provisions to protect property owners. For example, a wind easement may not make the property owner liable for any property...

  6. Magwind LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Texas Sector: Wind energy Product: Inventor of the Mag-Wind vertical axis wind turbine (VAWT) for building installations. The turbines are manufactured under contract at the...

  7. Floating Windfarms Corporation | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Corporation Place: Houston, Texas Zip: 77060 Sector: Wind energy Product: Texas-based offshore wind power developer that uses floating and non-floating vertical axis wind...

  8. SAND78-0760

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    in order to define the wind characteristics of the DOESandia vertical axis wind turbine test facility, Because micrometeorological conditions under which a particular wind...

  9. Microgrid

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... High-Resolution Computational Algorithms for Simulating Offshore Wind Farms Innovative Offshore Vertical-Axis Wind Turbine Rotors Offshore Wind RD&D: Sediment Transport Offshore ...

  10. Wind-turbine-performance assessment. Technology status report No. 4

    SciTech Connect

    Vachon, W.A.

    1982-06-01

    An updated summary of recent test data and experiences is reported from both federally and privately funded large wind turbine (WT) development and test programs, as well as from key WT programs in Europe. The data presented are current as of late spring 1981. Detailed summaries of test results are presented for the four US Department of Energy (DOE) 200-kW MOD-0A horizontal-axis WT's interconnected with electric utilities at various locations around the United States. A description of progress and experiences on both the cluster of three MOD-2 2.5-MW WT's, the MOD-1 2-MW WT, and other planned, federally funded WT installations is also presented. A brief description of test data and plans on the DOE vertical-axis program is also presented. An examination of recent test experiences and plans from approximately five privately funded large WT programs in the United States indicates that, during machine checkout and startup, a number of technical problems have been identified, which will require and startup, a number of technical problems have been identified, which will require design changes and create program delays. These changes, which are to be expected on prototype equipment, should not seriously affect private WT developments in the future.

  11. Wind Energy Projects | Department of Energy

    Energy.gov [DOE] (indexed site)

    Wind Energy Projects Wind Energy Projects Wind Energy Projects Wind Energy Projects Wind Energy Projects Wind Energy Projects Wind Energy Projects Wind Energy Projects Wind Energy ...

  12. Wind Power Forecasting Data

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Operations Call 2012 Retrospective Reports 2012 Retrospective Reports 2011 Smart Grid Wind Integration Wind Integration Initiatives Wind Power Forecasting Wind Projects Email...

  13. NREL: Wind Research - Wind Career Map Shows Wind Industry Career...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Career Map Shows Wind Industry Career Opportunities, Paths A screenshot of the wind career map showing the various points on a chart that show different careers in the wind...

  14. Wind News

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & ...

  15. Offshore Wind

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & ...

  16. wind turbines

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & ...

  17. Wind Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & ...

  18. Wind Workshop

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Workshop - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy ...

  19. Wind Power Partners '94 Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    4 Wind Farm Jump to: navigation, search Name Wind Power Partners '94 Wind Farm Facility Wind Power Partners '94 Sector Wind energy Facility Type Commercial Scale Wind Facility...

  20. Wethersfield Wind Power Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wethersfield Wind Power Wind Farm Jump to: navigation, search Name Wethersfield Wind Power Wind Farm Facility Wethersfield Wind Power Sector Wind energy Facility Type Commercial...

  1. State Fair Wind Energy Education Center Wind Farm | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Fair Wind Energy Education Center Wind Farm Jump to: navigation, search Name State Fair Wind Energy Education Center Wind Farm Facility Wind Energy Education Center Sector Wind...

  2. Portsmouth Abbey School Wind Turbine Wind Farm | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Abbey School Wind Turbine Wind Farm Jump to: navigation, search Name Portsmouth Abbey School Wind Turbine Wind Farm Facility Portsmouth Abbey School Wind Turbine Sector Wind energy...

  3. Harbec Plastic Wind Turbine Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Harbec Plastic Wind Turbine Wind Farm Jump to: navigation, search Name Harbec Plastic Wind Turbine Wind Farm Facility Harbec Plastic Wind Turbine Sector Wind energy Facility Type...

  4. Stetson Wind Expansion Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Stetson Wind Expansion Wind Farm Jump to: navigation, search Name Stetson Wind Expansion Wind Farm Facility Stetson Wind Expansion Sector Wind energy Facility Type Commercial Scale...

  5. NREL: Wind Research - Offshore Wind Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL's Offshore Wind Testing Capabilities 35 years of wind turbine testing experience ... Testing Applying 35 years of wind turbine testing expertise, NREL has developed ...

  6. NREL: Wind Research - Offshore Wind Turbine Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Offshore Wind Turbine Research Photo of a European offshore wind farm. Photo by Siemens ... NREL's offshore wind turbine research capabilities focus on critical areas that reflect ...

  7. NREL: Wind Research - Offshore Wind Resource Characterization

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Resource Characterization Map of the United States, showing the wind potential of offshore areas across the country. Enlarge image US offshore wind speed estimates at 90-m ...

  8. NREL: Wind Research - Wind Resource Assessment

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    State Wind Maps International Wind Resource Maps Dynamic Maps, GIS Data, and Analysis Tools Due to the existence of special ... to anticipate wind generation levels and adjust the ...

  9. Danielson Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Danielson Wind Facility Danielson Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Developer Juhl Wind...

  10. Kawailoa Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Kawailoa Wind Facility Kawailoa Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner First Wind...

  11. Palouse Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Palouse Wind Facility Palouse Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner First Wind...

  12. Harbor Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Harbor Wind Facility Harbor Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Harbor Wind LLC...

  13. Kahuku Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Kahuku Wind Jump to: navigation, search Name Kahuku Wind Facility Kahuku Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner First Wind...

  14. Wiota Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wiota Wind Jump to: navigation, search Name Wiota Wind Facility Wiota Wind Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Wiota Wind Energy LLC...

  15. Bravo Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Bravo Wind Jump to: navigation, search Name Bravo Wind Facility Bravo Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status Proposed Developer Bravo Wind LLC...

  16. Auwahi Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Auwahi Wind Jump to: navigation, search Name Auwahi Wind Facility Auwahi Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner BP Wind Energy...

  17. Traer Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Traer Wind Jump to: navigation, search Name Traer Wind Facility Traer Wind Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Norsemen Wind Energy LLC...

  18. Sheffield Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Sheffield Wind Facility Sheffield Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner First Wind...

  19. Rollins Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Rollins Wind Facility Rollins Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner First Wind...

  20. Wyoming Wind Power Project (generation/wind)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Power > Generation Hydro Power Wind Power Monthly GSP BPA White Book Dry Year Tools Firstgov Wyoming Wind Power Project (Foote Creek Rim I and II) Thumbnail image of wind...

  1. Offshore Wind Power USA

    Energy.gov [DOE]

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

  2. WINDExchange: Selling Wind Power

    WindExchange

    Market Sectors Printable Version Bookmark and Share Utility-Scale Wind Distributed Wind Motivations for Buying Wind Power Buying Wind Power Selling Wind Power Selling Wind Power Owners of wind turbines interconnected directly to the transmission or distribution grid, or that produce more power than the host consumes, can sell wind power as well as other generation attributes. Wind-Generated Electricity Electricity generated by wind turbines can be used to cover on-site energy needs

  3. Maria Group Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Group Inc Jump to: navigation, search Name: Maria Group Inc Place: Friendswood, Texas Zip: 77546 Sector: Wind energy Product: Holds patent to Noble Wind Turbine, a vertical axis...

  4. EC Publications

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Modeling and Analysis, Renewable Energy, Water Power, Wind Energy slidetemplate default CACTUS simulation of the wake of a three-bladed Darrieus vertical-axis wind turbine

  5. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

    Office of Scientific and Technical Information (OSTI)

    of vertical axis wind turbines Sheldahl R E Klimas P C WIND ENERGY DARRIEUS ROTORS TURBINE BLADES AERODYNAMICS AIRFOILS COMPARATIVE EVALUATIONS DATA COMPILATION PERFORMANCE...

  6. WePOWER | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name: WePOWER Place: Laguna Niguel, California Zip: 92677 Sector: Solar, Wind energy Product: California-based developer of micro-scale vertical axis wind turbines...

  7. International Development Consultants Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Development Consultants, Inc Place: Portland, Oregon Zip: 97023 Sector: Hydro, Hydrogen, Wind energy Product: Markets Advanced Design Vertical Axis Wind Turbines designed to...

  8. Grid Integration of Offshore Wind | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Grid Integration of Offshore Wind Much can be learned from the existing land-based integration research for handling the variability and uncertainty of the wind resource. Photograph of a wind turbine in the ocean. Located about 10 kilometers off the coast of Arklow, Ireland, the Arklow Bank offshore wind park consists of seven GE Wind 3.6-MW wind turbines. Integration and Transmission One comprehensive grid integration study is the Eastern Wind Integration and Transmission Study (EWITS), in

  9. Wind Measurement Buoy Advances Offshore Wind Energy | Department...

    Energy Saver

    Measurement Buoy Advances Offshore Wind Energy Wind Measurement Buoy Advances Offshore Wind Energy December 7, 2015 - 1:52pm Addthis Wind Measurement Buoy Advances Offshore Wind ...

  10. Milford Wind Corridor Phase I (Clipper) Wind Farm | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Clipper) Wind Farm Jump to: navigation, search Name Milford Wind Corridor Phase I (Clipper) Wind Farm Facility Milford Wind Corridor Phase I (Clipper) Sector Wind energy Facility...

  11. Michigan Wind II Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Wind Farm Jump to: navigation, search Name Michigan Wind II Wind Farm Facility Michigan Wind II Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status...

  12. Metro Wind LLC Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind LLC Wind Farm Jump to: navigation, search Name Metro Wind LLC Wind Farm Facility Metro Wind LLC Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  13. JD Wind 6 Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    JD Wind 6 Wind Farm Jump to: navigation, search Name JD Wind 6 Wind Farm Facility JD Wind 6 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  14. JD Wind 7 Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    JD Wind 7 Wind Farm Jump to: navigation, search Name JD Wind 7 Wind Farm Facility JD Wind 7 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  15. Garnet Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Garnet Wind Facility Garnet Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Azusa Light & Water...

  16. Lime Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Lime Wind Facility Lime Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Joseph Millworks Inc...

  17. Fairhaven Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Fairhaven Wind Facility Fairhaven Wind Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Solaya Energy Palmer...

  18. Scituate Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Scituate Wind Facility Scituate Wind Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Solaya Energy ...

  19. Pacific Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Pacific Wind Facility Pacific Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner enXco Developer...

  20. Galactic Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Galactic Wind Facility Galactic Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Epic Systems...

  1. Rockland Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Rockland Wind Facility Rockland Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Developer Ridgeline...

  2. Greenfield Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Jump to: navigation, search Name Greenfield Wind Facility Greenfield Wind Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Greenfield Wind Power...

  3. Willmar Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Willmar Wind Facility Willmar Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Willmar...

  4. Wind Program News

    SciTech Connect

    2012-01-06

    Stay current on the news about the wind side of the Wind and Water Power Program and important wind energy events around the U.S.

  5. Energy 101: Wind Turbines

    ScienceCinema

    None

    2016-07-12

    See how wind turbines generate clean electricity from the power of the wind. Highlighted are the various parts and mechanisms of a modern wind turbine.

  6. Energy 101: Wind Turbines

    SciTech Connect

    2011-01-01

    See how wind turbines generate clean electricity from the power of the wind. Highlighted are the various parts and mechanisms of a modern wind turbine.

  7. Wind turbine

    DOEpatents

    Cheney, Jr., Marvin C.

    1982-01-01

    A wind turbine of the type having an airfoil blade (15) mounted on a flexible beam (20) and a pitch governor (55) which selectively, torsionally twists the flexible beam in response to wind turbine speed thereby setting blade pitch, is provided with a limiter (85) which restricts unwanted pitch change at operating speeds due to torsional creep of the flexible beam. The limiter allows twisting of the beam by the governor under excessive wind velocity conditions to orient the blades in stall pitch positions, thereby preventing overspeed operation of the turbine. In the preferred embodiment, the pitch governor comprises a pendulum (65,70) which responds to changing rotor speed by pivotal movement, the limiter comprising a resilient member (90) which engages an end of the pendulum to restrict further movement thereof, and in turn restrict beam creep and unwanted blade pitch misadjustment.

  8. Wind Turbine Control Systems | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL is researching new control methodologies for both land-based wind turbines and offshore wind turbines. A photo of a wind turbine against blue sky with white blades on their ...

  9. NREL: Wind Research - Site Wind Resource Characteristics

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Site Wind Resource Characteristics A graphic showing the location of National Wind Technology Center and its wind power class 2. Click on the image to view a larger version. ...

  10. EECBG Success Story: Milwaukee Reaps Benefits of Wind Energy...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    EECBG Success Story: Delaware Community Saves with Solar Using its fiberglass technology ... SEP Success Story: Energetx Composites: Retooling Manufacturing, Creating Michigan Jobs

  11. Wind | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Science & Innovation Energy Sources Renewable Energy Wind Wind Wind The United States is home to one of the largest and fastest growing wind markets in the world. To stay ...

  12. Offshore Wind Resource Characterization | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Resource Characterization NREL scientists and engineers are leading efforts in ... and development, and forecasting that are essential for the development of offshore wind. ...

  13. Wind Integration National Dataset (WIND) Toolkit

    Office of Energy Efficiency and Renewable Energy (EERE)

    For utility companies, grid operators and other stakeholders interested in wind energy integration, collecting large quantities of high quality data on wind energy resources is vitally important....

  14. NREL: Wind Research - Wind Energy Videos

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Energy Videos The National Wind Technology Center (NWTC) is pleased to offer video presentations of its world-class capabilities, facilities, research areas, and personnel. As ...

  15. NREL: Wind Research - Small Wind Turbine Development

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Small Wind Turbine Development A photo of Southwest Windpower's Skystream wind turbine in ... Testing included power performance, safety and function, noise, and partial loads tests. ...

  16. Numerical analysis of heat transfer by conduction and natural convection in loose-fill fiberglass insulation--effects of convection on thermal performance

    SciTech Connect

    Delmas, A.A.; Wilkes, K.E.

    1992-04-01

    A two-dimensional code for solving equations of convective heat transfer in porous media is used to analyze heat transfer by conduction and convection in the attic insulation configuration. The particular cases treated correspond to loose-fill fiberglass insulation, which is characterized by high porosity and air permeability. The effects of natural convection on the thermal performance of the insulation are analyzed for various densities, permeabilities, and thicknesses of insulation. With convection increasing the total heat transfer through the insulation, the thermal resistance was found to decrease as the temperature difference across the insulating material increases. The predicted results for the thermal resistance are compared with data obtained in the large-scale climate simulator at the Roof Research Center using the attic test module, where the same phenomenon has already been observed. The way the wood joists within the insulation influence the start of convection is studied for differing thermophysical and dynamic properties of the insulating material. The presence of wood joists induces convection at a lower temperature difference.

  17. Structural Testing of the Blade Reliability Collaborative Effect of Defect Wind Turbine Blades

    SciTech Connect

    Desmond, M.; Hughes, S.; Paquette, J.

    2015-06-08

    Two 8.3-meter (m) wind turbine blades intentionally constructed with manufacturing flaws were tested to failure at the National Wind Technology Center (NWTC) at the National Renewable Energy Laboratory (NREL) south of Boulder, Colorado. Two blades were tested; one blade was manufactured with a fiberglass spar cap and the second blade was manufactured with a carbon fiber spar cap. Test loading primarily consisted of flap fatigue loading of the blades, with one quasi-static ultimate load case applied to the carbon fiber spar cap blade. Results of the test program were intended to provide the full-scale test data needed for validation of model and coupon test results of the effect of defects in wind turbine blade composite materials. Testing was part of the Blade Reliability Collaborative (BRC) led by Sandia National Laboratories (SNL). The BRC seeks to develop a deeper understanding of the causes of unexpected blade failures (Paquette 2012), and to develop methods to enable blades to survive to their expected operational lifetime. Recent work in the BRC includes examining and characterizing flaws and defects known to exist in wind turbine blades from manufacturing processes (Riddle et al. 2011). Recent results from reliability databases show that wind turbine rotor blades continue to be a leading contributor to turbine downtime (Paquette 2012).

  18. JD Wind 1 Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Farm Jump to: navigation, search Name JD Wind 1 Wind Farm Facility JD Wind 1 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner DWSJohn...

  19. North Dakota Wind II Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Wind Farm Jump to: navigation, search Name North Dakota Wind II Wind Farm Facility North Dakota Wind II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  20. Venture Wind II Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Wind Farm Jump to: navigation, search Name Venture Wind II Wind Farm Facility Venture Wind II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  1. MinWind I & II Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    I & II Wind Farm Jump to: navigation, search Name MinWind I & II Wind Farm Facility MinWind I & II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  2. Cow Branch Wind Energy Center Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Cow Branch Wind Energy Center Wind Farm Jump to: navigation, search Name Cow Branch Wind Energy Center Wind Farm Facility Cow Branch Wind Energy Center Sector Wind energy Facility...

  3. JD Wind 5 Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    5 Wind Farm Jump to: navigation, search Name JD Wind 5 Wind Farm Facility JD Wind 5 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner John...

  4. JD Wind 4 Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    4 Wind Farm Jump to: navigation, search Name JD Wind 4 Wind Farm Facility JD Wind 4 Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner John...

  5. Aeroelastic analysis of a Darrieus type wind turbine blade with troposkien geometry

    SciTech Connect

    Nitzsche, F.

    1983-01-01

    The troposkien geometry has been invoked in structural modeling of blades belonging to a class of vertical axis wind turbines called Darrieus rotors. Although it is free of bending stresses in the equilibrium position, determined by a constant angular velocity, tests have indicated that under certain conditions serious vibrations about the original shape may occur. A new approach is proposed to study the general problem of free vibration of one-dimensional structures and in particular one of a blade initially curved in the troposkien shape. The present scheme links for the first time two already existing ideas: the transfer matrices which were first developed in the 50's and the relatively recent idea of integrating matrices. Modal superposition is employed to study the flutter problem when the blade is aerodynamically loaded according to two hypothetical experiments. In the first, a vacuum chamber containing the rotating troposkien blade is brought up to the sea level air density. The second experiment consists of placing the rotating blade in the wind tunnel, increasing the velocity of the wind from zero to characteristic values in the operating range of the turbine. Two different analytical treatments are employed in each one of the aforementioned experiments. The root-locus method of tracing complex roots of the flutter determinant in the frequency-domain is used in the first experiment, whereas the Floquet-Liapunov stability theory is applied to the second. The stability of the blade as a function of different support conditions, elastic axis location, turbine speed and structural damping is studied in detail.

  6. Grid Integration of Wind Energy | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Grid Integration of Wind Energy Researchers study grid integration of wind energy to better understand how variable generation resources such as wind energy impact the grid and how to increase the percentage of wind generation in the United States' energy portfolio. A photo of three wind turbines with transmission lines in the background. Capabilities NREL's grid integration analysts work with the U.S. Department of Energy, university researchers, independent system operators, and regional

  7. Wind Data and Tools | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Data and Tools Learn more about wind energy through these NREL data and tools. A photo of two men silhouetted against a computer-generated simulation with white and blue rows illustrating wind plant aerodynamics. NWTC Information Portal This open-source library houses NREL's wind and water power simulation and modeling software and data, including computer-aided engineering tools and integrated system design and analysis tools. All software is available for download. Wind-Wildlife Impacts

  8. GL Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    GL Wind Jump to: navigation, search Name GL Wind Facility GL Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner GL Wind Developer Juhl...

  9. Wind Technologies & Evolving Opportunities (Presentation)

    SciTech Connect

    Robichaud, R.

    2014-07-01

    This presentation covers opportunities for wind technology; wind energy market trends; an overview of the National Wind Technology Center near Boulder, Colorado; wind energy price and cost trends; wind turbine technology improvements; and wind resource characterization improvements.

  10. Wind energy | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind energy (Redirected from Wind power) Jump to: navigation, search Wind energy is a form of solar energy.1 Wind energy (or wind power) describes the process by which wind is...

  11. WINDExchange: Potential Wind Capacity

    WindExchange

    Potential Wind Capacity Potential wind capacity maps are provided for a 2014 industry standard wind turbine installed on a 110-m tower, which represents plausible current technology options, and a wind turbine on a 140-m tower, which represents near-future technology options. For more detailed information regarding the assumptions and calculations behind the wind potential capacity maps, see the Energy Department's Enabling Wind Power Nationwide report. Enlarge image This map shows the wind

  12. 2015 Iowa Wind Power Conference and Iowa Wind Energy Association...

    Office of Environmental Management (EM)

    2015 Iowa Wind Power Conference and Iowa Wind Energy Association Midwest Regional Energy Job Fair 2015 Iowa Wind Power Conference and Iowa Wind Energy Association Midwest Regional...

  13. Brazos Wind Ranch Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Shell Wind EnergyMitsui Developer Cielo Wind PowerOrion Energy Energy Purchaser Green...

  14. Wind tunnel performance data for the Darrieus wind turbine with...

    Office of Scientific and Technical Information (OSTI)

    Wind tunnel performance data for the Darrieus wind turbine with NACA 0012 blades Citation Details In-Document Search Title: Wind tunnel performance data for the Darrieus wind ...

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

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    A National Offshore Wind Strategy: Creating an Offshore Wind Energy Industry in the United States A National Offshore Wind Strategy: Creating an Offshore Wind Energy Industry in ...

  16. 20% Wind Energy by 2030 - Chapter 2: Wind Turbine Technology...

    Energy Saver

    2: Wind Turbine Technology Summary Slides 20% Wind Energy by 2030 - Chapter 2: Wind Turbine Technology Summary Slides Summary slides for wind turbine technology, its challenges, ...

  17. First Wind (Formerly UPC Wind) (Oregon) | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    First Wind (Formerly UPC Wind) Address: 1001 S.W. Fifth Avenue Place: Portland, Oregon Zip: 97204 Region: Pacific Northwest Area Sector: Wind energy Product: Wind power developer...

  18. National Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name: National Wind Place: Minneapolis, Minnesota Zip: 55402 Sector: Wind energy Product: Wind project developer in the upper Midwest and Plains...

  19. Solar Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name: Solar Wind Place: Krasnodar, Romania Zip: 350000 Sector: Solar, Wind energy Product: Russia-based PV product manufacturer. Solar Wind...

  20. Wind Energy | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wind Energy Wind Energy Below are resources for Tribes on wind energy technologies. 2012 Market Report on Wind Technologies in Distributed Applications Includes a breakdown of ...

  1. Horn Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name: Horn Wind Place: Windthorst, Texas Zip: 76389 Sector: Wind energy Product: Texas-based company that develops community-based industrial wind...

  2. Royal Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name: Royal Wind Place: Denver, Colorado Sector: Wind energy Product: Vertical Wind Turbines Year Founded: 2008 Website: www.RoyalWindTurbines.com Coordinates: 39.7391536,...

  3. Coriolis Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Logo: Coriolis Wind Name: Coriolis Wind Place: Great Falls, Virginia Zip: 22066 Product: Mid-Scale Wind Turbine Year Founded: 2007 Website:...

  4. Jasper Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name: Jasper Wind Place: Athens, Greece Sector: Solar, Wind energy Product: Athens-based wind and solar project developer. Coordinates: 37.97615,...

  5. WINDExchange: Siting Wind Turbines

    WindExchange

    Deployment Activities Printable Version Bookmark and Share Regional Resource Centers Economic Development Siting Resources & Tools Siting Wind Turbines This page provides resources about wind turbine siting. American Wind Wildlife Institute The American Wind Wildlife Institute (AWWI) facilitates timely and responsible development of wind energy, while protecting wildlife and wildlife habitat. AWWI was created and is sustained by a unique collaboration of environmentalists, conservationists,

  6. An Exploration of Wind Energy & Wind Turbines

    Education - Teach & Learn

    This unit, which includes both a pre and post test on wind power engages students by allowing them to explore connections between wind energy and other forms of energy. Students learn about and examine the overall design of a wind turbine and then move forward with an assessment of the energy output as factors involving wind speed, direction and blade design are altered. Students are directed to work in teams to design, test and analyze components of a wind turbine such as blade length, blade shape, height of turbine, etc Student worksheets are included to facilitate the design and analysis process. Learning Goals: Below are the learning targets for the wind energy unit.

  7. Crow Lake Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Jump to: navigation, search Name Crow Lake Wind Facility Crow Lake Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Prairie Winds...

  8. Wildcat Ridge Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wildcat Ridge Wind Farm Facility Wildcat Ridge Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Midwest Wind Energy Developer Midwest Wind...

  9. Radial Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name Radial Wind Farm Facility Radial Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner Radial Wind Developer Radial Wind Location...

  10. NREL: Wind Research - News

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Technology Center at NREL provides a number of wind news sources to help you stay up-to-date with its activities, research, and new developments. NREL Wind News See...

  11. Wind Power Today

    SciTech Connect

    Not Available

    2006-05-01

    Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Hydropower Technologies Program.

  12. Wind Power Today

    SciTech Connect

    Not Available

    2007-05-01

    Wind Power Today is an annual publication that provides an overview of the wind energy research conducted by the U.S. Department of Energy Wind and Hydropower Technologies Program.

  13. Model Wind Ordinance

    Office of Energy Efficiency and Renewable Energy (EERE)

    In July, 2008 the North Carolina Wind Working Group, a coalition of state government, non-profit and wind industry organizations, published a model wind ordinance to provide guidance for...

  14. Solar and Wind Easements

    Energy.gov [DOE]

    In April 2011, the provisions related to wind easements were repealed by House Bill 295 (2011) and replaced with more extensive wind easements provisions.  This legislation defines wind energy ri...

  15. Impacts | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Impacts Read about NREL's impacts on innovations in wind energy research. Photo of four men in hard hats standing on top of a large wind turbine overlooking several other wind turbines in the distance. Fact Sheets Wind Energy Benefits thumbnail Wind Energy Benefits Screenshot of the cover of the national wind technology brochure. 35 Years of Innovation: Leading the Way to a Clean Energy Future JEDI: Jobs and Economic Development Impact Model thumbnail JEDI: Jobs and Economic Development Impact

  16. Distributed Wind Ordinances: Slides

    WindExchange

    an introduction to distributed wind projects and a brief overview of topics to consider when developing a distributed wind energy ordinance. Distributed Wind Ordinances Photo from Byers and Renier Construction, NREL 18820 Distributed Wind Ordinances The U.S. Department of Energy defines distributed wind projects as: (a) The use of wind turbines, on- or off-grid, at homes, farms and ranches, businesses, public and industrial facilities, or other sites to offset all or a portion of the local

  17. Wind Energy Integration: Slides

    WindExchange

    information about integrating wind energy into the electricity grid. Wind Energy Integration Photo by Dennis Schroeder, NREL 25907 Wind energy currently contributes significant power to energy portfolios around the world. *U.S. Department of Energy. (August 2015). 2014 Wind Technologies Market Report. Wind Energy Integration In 2014, Denmark led the way with wind power supplying roughly 39% of the country's electricity demand. Ireland, Portugal, and Spain provided more than 20% of their

  18. 2009 News | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    9 News Below are news stories related to Wind. RSS Learn about RSS. September 14, 2009 IEA Wind Energy 2008 Annual Report Now Available for Free Download The IEA Annual Report for 2008 provides the latest information on wind industries in 20 International Energy Agency (IEA) Wind member countries. August 26, 2009 NWTC Installs Multimegawatt Research Turbines NREL's National Wind Technology Center installed the first of two multimegawatt wind turbines last week to be used for research to advance

  19. Wind Power Reliability Research | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Power Reliability Research The U.S. wind power industry is well established, with nearly 75 gigawatts of installed capacity across the United States. Given this large base of ...

  20. Wind Energy Modeling and Simulation | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Energy Modeling and Simulation Wind turbines are unique devices that are typically anchored to the ground but operate in the atmosphere, which subjects them to a variety of ...

  1. Wind Vision Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Facility Status In Service Owner Wind Vision Developer Wind Vision Location St. Ansgar IA Coordinates 43.348224, -92.888816 Show Map Loading map... "minzoom":false,"mappings...

  2. Alaska Wind Update

    Energy Saver

    Alaska Wind Update BIA Providers Conference Dec. 2, 2015 Unalakleet wind farm Energy Efficiency First Make homes, workplaces and communities energy efficient thru ...

  3. @NWTC Newsletter | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    from the Energy Department's National Wind Technology Center (NWTC) at the National ... an essential partner for the technical development and deployment of wind and water power. ...

  4. Scaled Wind Farm Technology

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Scaled Wind Farm Technology - Sandia Energy Energy Search Icon Sandia Home Locations ... Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power ...

  5. Enabling Wind Power Nationwide

    Energy.gov [DOE] (indexed site)

    Enabling Wind Power Nationwide May 2015 This report is being disseminated by the U.S. ... ordering: ntis.govordering.htm Enabling Wind Power Nationwide Primary Authors Jose ...

  6. Articles about Wind Siting

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    energy.gov Model Examines Cumulative Impacts of Wind Energy Development on the Greater Sage-Grouse http:energy.goveerewindarticlesmodel-examines-cumulative-impacts-wind-ener...

  7. Wind Program: Publications

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Resources Publications Advanced Search Browse by Topic Mail Requests Help Energy Basics Wind Energy FAQs Small Wind Systems FAQs Multimedia Related Links Feature featured...

  8. Wind | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wind Wind EERE plays a key role in advancing America's "all of the above" energy strategy, leading a large network of researchers and other partners to deliver innovative ...

  9. Market Acceleration | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    NREL's team also offers energy and economic analysis, maps, forecasting, workforce development, and education. An aerial photo of three wind turbines at the National Wind ...

  10. Wind Turbine Tribology Seminar

    Energy.gov [DOE]

    Wind turbine reliability issues are often linked to failures of contacting components, such as bearings, gears, and actuators. Therefore, special consideration to tribological design in wind...

  11. NREL: Wind Research - Publications

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Publications The NREL wind research program develops publications about its R&D projects, accomplishments, and goals in wind energy technologies. Here you will find links to some ...

  12. Sandia Energy Wind News

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Sandia Wake-Imaging System Successfully Deployed at Scaled Wind Farm Technology Facility http:energy.sandia.govsandia-wake-imaging-system-successfully-deployed-at-scaled-wind-fa...

  13. Scale Models & Wind Turbines

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Turbines * Readings about Cape Wind and other offshore and onshore siting debates for wind farms * Student Worksheet * A number of scale model items: Ken, Barbie or other dolls...

  14. Small Wind Conference 2015

    Energy.gov [DOE]

    The Small Wind Conference brings together small wind installers, site assessors, manufacturers, dealers and distributors, supply chain stakeholders, educators, public benefits program managers, and...

  15. Wind for Schools (Poster)

    SciTech Connect

    Baring-Gould, I.

    2010-05-01

    As the United States dramatically expands wind energy deployment, the industry is challenged with developing a skilled workforce and addressing public resistance. Wind Powering America's Wind for Schools project addresses these issues by developing Wind Application Centers (WACs) at universities; WAC students assist in implementing school wind turbines and participate in wind courses, by installing small wind turbines at community "host" schools, by implementing teacher training with interactive curricula at each host school. This poster provides an overview of the first two years of the Wind for Schools project, primarily supporting activities in Colorado, Kansas, Nebraska, South Dakota, Montana, and Idaho.

  16. Wind energy bibliography

    SciTech Connect

    1995-05-01

    This bibliography is designed to help the reader search for information on wind energy. The bibliography is intended to help several audiences, including engineers and scientists who may be unfamiliar with a particular aspect of wind energy, university researchers who are interested in this field, manufacturers who want to learn more about specific wind topics, and librarians who provide information to their clients. Topics covered range from the history of wind energy use to advanced wind turbine design. References for wind energy economics, the wind energy resource, and environmental and institutional issues related to wind energy are also included.

  17. Requirements for Wind Development

    Office of Energy Efficiency and Renewable Energy (EERE)

    In 2015 Oklahoma amended the Oklahoma Wind Energy Development Act. The amendments added new financial security requirements, setback requirements, and notification requirements for wind energy...

  18. WINDExchange: Distributed Wind

    WindExchange

    Distributed Wind Photo of a small wind turbine next to a farm house with a colorful sunset in the background. The distributed wind market includes wind turbines and projects of many sizes, from small wind turbines less than 1 kilowatt (kW) to multi-megawatt wind farms. The term "distributed wind" describes off-grid or grid-connected wind turbines at homes, farms and ranches, businesses, public and industrial facilities, and other sites. The turbines can provide all of the power used at

  19. Cherokee Wind

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cherokee Wind Presenter: Carol Wyatt Cherokee Nation Businesses, Inc. DOE Tribal Energy Program October 26, 2010 KA W PA W N EE TO NK AW A PO NC A OT OE -M IS S OU RI CH E RO KE E Acr es: 2,633 .348 CH E RO KE E Acr es: 1,641 .687 CHEROKEE NATION Kay County Chilocco Property DATA SOU RC ES: US Census Bureau (T iger Files ) D OQQ's , USGS D RG's, USGS Cherokee Nation Realty D epartment C herokee N ation GeoD ata C enter Date: 12/19/01 e:\project\land\c hilocc o N E W S Tribal Land Chilocco

  20. Chaninik Wind Group: Harnessing Wind, Building Capacity

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Chaninik Wind Group: Harnessing Wind, Building Capacity Installation of Village Energy Information System Smart Grid Controller, Thermal Stoves and Meters to Enhance the Efficiency of Wind- Diesel Hybrid Power Generation in Tribal Regions of Alaska Department of Energy Tribal Energy Program Review November 16-20, 2009 The Chananik Wind Group Our goal is to become the "heartbeat of our region." Department of Energy Tribal Energy Program Review November 16-20, 2009 Department of Energy

  1. ARM: 915-MHz Radar Wind Profiler: Wind Moments, operating in...

    Office of Scientific and Technical Information (OSTI)

    915-MHz Radar Wind Profiler: Wind Moments, operating in low power mode Title: ARM: 915-MHz Radar Wind Profiler: Wind Moments, operating in low power mode 915-MHz Radar Wind ...

  2. Hull Wind II Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Wind Farm Jump to: navigation, search Name Hull Wind II Wind Farm Facility Hull II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Hull...

  3. Wind Vision: Continuing the Success of Wind Energy | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wind Vision: Continuing the Success of Wind Energy Wind Vision: Continuing the Success of Wind Energy April 2, 2015 - 10:35am Addthis The Wind Vision Report describes potential ...

  4. SAND80-0984

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    August 1980 Distribution Category UC-60 PROCEEDINGS OF THE VERTICAL AXIS WIND TURBINE (VAWT) DESIGN TECHNOLOGY SEMINAR FOR INDUSTRY April 1, 2, and 3, 1980 Albuquerque, New Mexico...

  5. Phase 1 of WEC-Sim Experimental Testing Underway

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... testing of the Floating Oscillating Surge Wave ... Sandia vertical axis wind turbines (VAWTs) demonstrate offshore advantages First Power for SWiFT Turbine Achieved during ...

  6. SAND81-1762

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1981 Effects of Blade Preset Pitch Offset on Curved-Blade Oarrieus Vertical Axis Wind Turbine Performance Paul C. Klimas, Mark H. Worstell Prepared by Sandia National...

  7. SAND78-0962 VOL 1

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    to update the markings to current standards. ECONOMIC ANALYSIS OF DARRIEUS VERTICAL AXIS WIND TURBINE SYSTEMS FOR THE GENERATION OF UTILITY GRID ELECTRICAL pmtER VOLUME I -...

  8. EC Publications

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Manual for the Vertical Axis Wind Turbine Code VDART3 (84) A Vortex Model of the Darrieus Turbine: An Analytical and Experimental Study (82) Accelerometer Measurements of ...

  9. EC Publications

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Electrical Power :Volume II - The Economic Optimization Model (33) Economic Analysis of Darrieus Vertical Axis Wind Turbine Systems for the Generation of Utility Grid Electrical ...

  10. Experimental And Numerical Investigation Of An Optimized Airfoil...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... layer transition is obtained in the experiment with respect to the Xfoil simulations. ... Published Online. 21 Sullivan, W. (1979). Economic analysis of darrieus vertical axis wind ...

  11. Wind Vision | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wind Vision Introduction U.S. Wind Power Impacts Roadmap Download Wind Vision: A New Era ... Back to top Chapter 4: The Wind Vision Roadmap The Wind Vision includes a detailed roadmap ...

  12. History of Wind Energy | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    History of Wind Energy History of Wind Energy

  13. History of Wind Energy | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    History of Wind Energy History of Wind Energy

  14. NREL: Innovation Impact - Wind

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Energy Menu Home Home Solar Solar Wind Wind Analysis Analysis Bioenergy Bioenergy Buildings Buildings Transportation Transportation Manufacturing Manufacturing Energy Systems Integration Energy Systems Integration Wind turbines must withstand powerful aerodynamic forces unlike any other propeller-drive machines. Close NREL's work with industry has improved the efficiency and durability of turbine blades and gearboxes. Innovations include: Specialized airfoils Variable-speed turbines

  15. Energy from the wind

    SciTech Connect

    Not Available

    1987-07-01

    This document provides a brief description of the use of wind power. Windmills from the 18th century are described. Modern wind turbines and wind turbine arrays are discussed. Present and future applications of wind power in the US are explained. (JDH)

  16. Your wind driven generator

    SciTech Connect

    Wolff, B.

    1984-01-01

    Wind energy pioneer Benjamin Lee Wolff offers practical guidance on all aspects of setting up and operating a wind machine. Potential builders will learn how to: determine if wind energy is suitable for a specific application; choose an appropriate machine; assess the financial costs and benefits of wind energy; obtain necessary permits; sell power to local utilities; and interpret a generator's specifications. Coverage includes legislation, regulations, siting, and operation. While describing wind energy characteristics, Wolff explores the relationships among wind speed, rotor diameter, and electrical power capacity. He shows how the power of wind energy can be tapped at the lowest cost.

  17. Wind Energy Benefits: Slides

    WindExchange

    1. Wind energy is cost competitive. *Wiser, R.; Bolinger, M. (2015). 2014 Wind Technologies Market Report. U.S. Department of Energy. Wind Energy Benefits Photo from DOE Flickr. 465 020 003 In 2014, the average levelized price of signed wind power purchase agreements was about 2.35 cents per kilowatt-hour. This price is cost competitive with new gas-fired power plants and projects compare favorably through 2040.* 2. Wind energy creates jobs. American Wind Energy Association. (2015). U.S. Wind

  18. ARM - Wind Chill Calculations

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    CalculatorsWind Chill Calculations Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Wind Chill Calculations Wind Chill is the apparent temperature felt on the exposed human body owing to the combination of temperature and wind speed. From 1945 to 2001, Wind Chill was calculated by the Siple

  19. Wind Power Outlook 2004

    SciTech Connect

    anon.

    2004-01-01

    The brochure, expected to be updated annually, provides the American Wind Energy Association's (AWAE's) up-to-date assessment of the wind industry. It provides a summary of the state of wind power in the U.S., including the challenges and opportunities facing the industry. It provides summary information on the growth of the industry, policy-related factors such as the federal wind energy production tax credit status, comparisons with natural gas, and public views on wind energy.

  20. WINDExchange: Collegiate Wind Competition

    WindExchange

    Education Printable Version Bookmark and Share Workforce Development Collegiate Wind Competition Wind for Schools Project School Project Locations Education & Training Programs Curricula & Teaching Materials Resources Collegiate Wind Competition The U.S. Department of Energy (DOE) Collegiate Wind Competition challenges interdisciplinary teams of undergraduate students from a variety of programs to offer a unique solution to a complex wind energy project. The Competition provides students

  1. WINDExchange: Wind Energy Ordinances

    WindExchange

    Wind Energy Ordinances Federal, state, and local regulations govern many aspects of wind energy development. The nature of the project and its location will largely drive the levels of regulation required. Wind energy ordinances adopted by counties, towns, and other types of municipalities are one of the best ways for local governments to identify conditions and priorities for all types of wind development. These ordinances regulate aspects of wind projects such as their location, permitting

  2. 2006 News | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    6 News Below are news stories related to Wind. RSS Learn about RSS. December 14, 2006 NREL and Xcel Energy Dedicate Wind-Powered Hydrogen Generator DOE's National Renewable Energy Laboratory (NREL) and Xcel Energy dedicated a new system to convert wind power into hydrogen on December 14th. The system, located at NREL's National Wind Technology Center, links two wind turbines to devices called electrolyzers, which pass the electricity through water to split the liquid into hydrogen and oxygen.

  3. WINDExchange: Offshore 90-Meter Wind Maps and Wind Resource Potential

    WindExchange

    Offshore 90-Meter Wind Maps and Wind Resource Potential The U.S. Department of Energy provides 90-meter (m) height, high-resolution wind maps and estimates of the total offshore wind potential that would be possible from developing the available offshore areas. The offshore wind resource maps can be used as a guide to identify regions for commercial wind development. A map of the United States showing offshore wind resource. Washington offshore wind map. Oregon offshore wind map. California

  4. Incipient Crack Detection in Composite Wind Turbine Blades

    SciTech Connect

    Taylor, Stuart G.; Choi, Mijin; Jeong, Hyomi; Jang, Jae Kyeong; Park, Gyuhae; Farinholt, Kevin; Farrar, Charles R.; Ammerman, Curtt N.; Todd, Michael D.; Lee, Jung-Ryul

    2012-08-28

    This paper presents some analysis results for incipient crack detection in a 9-meter CX-100 wind turbine blade that underwent fatigue loading to failure. The blade was manufactured to standard specifications, and it underwent harmonic excitation at its first resonance using a hydraulically-actuated excitation system until reaching catastrophic failure. This work investigates the ability of an ultrasonic guided wave approach to detect incipient damage prior to the surfacing of a visible, catastrophic crack. The blade was instrumented with piezoelectric transducers, which were used in an active, pitchcatch mode with guided waves over a range of excitation frequencies. The performance results in detecting incipient crack formation in the fiberglass skin of the blade is assessed over the range of frequencies in order to determine the point at which the incipient crack became detectable. Higher excitation frequencies provide consistent results for paths along the rotor blade's carbon fiber spar cap, but performance falls off with increasing excitation frequencies for paths off of the spar cap. Lower excitation frequencies provide more consistent performance across all sensor paths.

  5. National Wind Assessments formerly Romuld Wind Consulting | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    Assessments formerly Romuld Wind Consulting Jump to: navigation, search Name: National Wind Assessments (formerly Romuld Wind Consulting) Place: Minneapolis, Minnesota Zip: 55416...

  6. Scaled Wind Farm Technology (SWIFT) Facility Wind Turbine Controller...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    (SWIFT) Facility Wind Turbine Controller Ground Testing - Sandia Energy Energy Search Icon ... Scaled Wind Farm Technology (SWIFT) Facility Wind Turbine Controller Ground Testing Home...

  7. NREL: Wind Research - Small and Distributed Wind Turbine Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Small and Distributed Wind Turbine Research A distributed wind farm in Wisconsin at ... Standards: The suite of tests conducted on small wind turbines includes acoustic noise ...

  8. Sinomatech Wind Power Blade aka Sinoma Science Technology Wind...

    OpenEI (Open Energy Information) [EERE & EIA]

    Sinomatech Wind Power Blade aka Sinoma Science Technology Wind Turbine Blade Co Ltd Jump to: navigation, search Name: Sinomatech Wind Power Blade (aka Sinoma Science & Technology...

  9. Distributed Wind | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Distributed Wind Distributed Wind The Wind Program's activities in wind technologies in distributed applications-or distributed wind-address the performance and reliability challenges associated with smaller turbines by focusing on technology development, testing, certification, and manufacturing. What is Distributed Wind? Photo of a turbine behind a school. The Wind Program defines distributed wind in terms of technology application, based on a wind plant's location relative to end-use and

  10. Chaninik Wind Group Wind Heat Smart Grid

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Chaninik Wind Group Wind Heat Smart Grid Our Presentation * William Igkurak, President Chaninik Wind Group * the harness renewables to lower energy costs, * create economic opportunities * build human capacity * Dennis Meiners * Principal Intelligent Energy Systems, Anchorage Ak. * How it all works Program Highlights ²Award Tribal Energy funding 2009, Village Smart Grid ²Received funds November 2010 ²Project to be complete June 2011 ²Theme: "communities working together we can become

  11. Star Point Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Point Wind Farm Jump to: navigation, search Name Star Point Wind Farm Facility Star Point Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  12. Gulf Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Farm Jump to: navigation, search Name Gulf Wind Farm Facility Gulf Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Pattern Energy...

  13. Stetson Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Farm Jump to: navigation, search Name Stetson Wind Farm Facility Stetson Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner First Wind...

  14. Zirbel Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    to: navigation, search Name Zirbel Wind Farm Facility Zirbel Wind Farm (Glenmore Wind Energy Facility) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  15. Beebe Community Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    navigation, search Name Beebe Community Wind Facility Beebe Community Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Exelon Wind...

  16. Woodstock Municipal Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name Woodstock Municipal Wind Facility Woodstock Municipal Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Developer Juhl Wind...

  17. Winona County Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    to: navigation, search Name Winona County Wind Facility Winona County Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Juhl Wind...

  18. Story City Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Jump to: navigation, search Name Story City Wind Facility Story City Wind Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Hamilton Wind Energy...

  19. Palmetto Wind Research Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Research Project Jump to: navigation, search Name Palmetto Wind Research Project Facility Palmetto Wind Research Project Sector Wind energy Facility Type Offshore Wind...

  20. Tillamook Offshore Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Tillamook Offshore Wind Farm Jump to: navigation, search Name Tillamook Offshore Wind Farm Facility Tillamook Offshore Wind Farm Sector Wind energy Facility Type Offshore Wind...

  1. Deepwater Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name Deepwater Wind Farm Facility Deepwater Wind Farm Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner PSEG Renewable Generation Deepwater Wind...

  2. Galveston Offshore Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Galveston Offshore Wind Farm Jump to: navigation, search Name Galveston Offshore Wind Farm Facility Galveston Offshore Wind Farm Sector Wind energy Facility Type Offshore Wind...

  3. Montfort Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Montfort Wind Farm Jump to: navigation, search Name Montfort Wind Farm Facility Montfort Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  4. Wildcat 1 Wind Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wildcat 1 Wind Project Jump to: navigation, search Name Wildcat 1 Wind Project Facility Wildcat 1 Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  5. Springview II Wind Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Springview II Wind Project Jump to: navigation, search Name Springview II Wind Project Facility Springview II Wind Project Sector Wind energy Facility Type Commercial Scale Wind...

  6. Shiloh Wind Power Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power Project Jump to: navigation, search Name Shiloh Wind Power Project Facility Shiloh Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  7. Fenton Wind Power Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power Project Jump to: navigation, search Name Fenton Wind Power Project Facility Fenton Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  8. Madison Wind Power Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power Project Jump to: navigation, search Name Madison Wind Power Project Facility Madison Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  9. Somerset Wind Power Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power Project Jump to: navigation, search Name Somerset Wind Power Project Facility Somerset Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  10. Desert Wind Power | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power Jump to: navigation, search Name Desert Wind Power Facility Desert Wind Power Sector Wind energy Facility Type Commercial Scale Wind Facility Status Proposed Developer...

  11. Moraine Wind Power Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power Project Jump to: navigation, search Name Moraine Wind Power Project Facility Moraine Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  12. Adams Wind Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Project Jump to: navigation, search Name Adams Wind Project Facility Adams Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  13. Blue Creek Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Creek Wind Farm Jump to: navigation, search Name Blue Creek Wind Farm Facility Blue Creek Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  14. Tuana Springs Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Springs Wind Farm Jump to: navigation, search Name Tuana Springs Wind Farm Facility Tuana Springs Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status...

  15. Thousand Springs Wind Park | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Springs Wind Park Jump to: navigation, search Name Thousand Springs Wind Park Facility Thousand Springs Wind Park Sector Wind energy Facility Type Commercial Scale Wind Facility...

  16. First State Marine Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    State Marine Wind Jump to: navigation, search Name First State Marine Wind Facility First State Marine Wind Sector Wind energy Facility Type Offshore Wind Facility Status Proposed...

  17. Minco Wind Energy Center | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Energy Center Jump to: navigation, search Name Minco Wind Energy Center Facility Minco Wind Energy Center Sector Wind energy Facility Type Commercial Scale Wind Facility...

  18. Dunlap Wind Energy Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Dunlap Wind Energy Project Jump to: navigation, search Name Dunlap Wind Energy Project Facility Dunlap Wind Energy Project Sector Wind energy Facility Type Commercial Scale Wind...

  19. Baseline Wind Energy Facility | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Energy Facility Jump to: navigation, search Name Baseline Wind Energy Facility Facility Baseline Wind Energy Facility Sector Wind energy Facility Type Commercial Scale Wind...

  20. Howard Wind Energy Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Energy Project Jump to: navigation, search Name Howard Wind Energy Project Facility Howard Wind Energy Project Sector Wind energy Facility Type Community Wind Facility Status...

  1. Cape Wind Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Project Jump to: navigation, search Name Cape Wind Project Facility Cape Wind Sector Wind energy Facility Type Offshore wind Facility Status Proposed Owner Cape Wind Developer Cape...

  2. Wales Wind Energy Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wales Wind Energy Project Jump to: navigation, search Name Wales Wind Energy Project Facility Wales Wind Energy Project Sector Wind energy Facility Type Small Scale Wind Facility...

  3. Wyoming Wind Energy Center | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Energy Center Jump to: navigation, search Name Wyoming Wind Energy Center Facility Wyoming Wind Energy Center Sector Wind energy Facility Type Commercial Scale Wind Facility...

  4. Vantage Wind Energy Center | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Energy Center Jump to: navigation, search Name Vantage Wind Energy Center Facility Vantage Wind Energy Center Sector Wind energy Facility Type Commercial Scale Wind Facility...

  5. Bayonne Wind Energy Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Bayonne Wind Energy Project Jump to: navigation, search Name Bayonne Wind Energy Project Facility Bayonne Wind Energy Project Sector Wind energy Facility Type Community Wind...

  6. Gary Wind Energy Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Gary Wind Energy Project Jump to: navigation, search Name Gary Wind Energy Project Facility Gary Wind Energy Project Sector Wind energy Facility Type Small Scale Wind Facility...

  7. Havoco Wind Energy LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Havoco Wind Energy LLC Jump to: navigation, search Name: Havoco Wind Energy LLC Place: Dallas, Texas Zip: 75206 Sector: Wind energy Product: Wind developer of Altamont Pass wind...

  8. Oliver Wind Energy Center | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Energy Center Jump to: navigation, search Name Oliver Wind Energy Center Facility Oliver Wind Energy Center Sector Wind energy Facility Type Commercial Scale Wind Facility...

  9. Flat Water Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Water Wind Farm Jump to: navigation, search Name Flat Water Wind Farm Facility Flat Water Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  10. Gray County Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Gray County Wind Farm Jump to: navigation, search Name Gray County Wind Farm Facility Gray County Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status...

  11. Hopkins Ridge Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Farm Jump to: navigation, search Name Hopkins Ridge Wind Farm Facility Hopkins Ridge Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  12. Luther College Wind Turbine | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Luther College Wind Turbine Jump to: navigation, search Name Luther College Wind Turbine Facility Luther College Wind Turbine Sector Wind energy Facility Type Community Wind...

  13. Williams Stone Wind Turbine | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Stone Wind Turbine Jump to: navigation, search Name Williams Stone Wind Turbine Facility Williams Stone Wind Turbine Sector Wind energy Facility Type Community Wind Facility Status...

  14. Portsmouth Wind Turbine | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Turbine Jump to: navigation, search Name Portsmouth Wind Turbine Facility Portsmouth Wind Turbine Sector Wind energy Facility Type Community Wind Facility Status In Service...

  15. Charlestown Wind Turbine | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Charlestown Wind Turbine Jump to: navigation, search Name Charlestown Wind Turbine Facility Charlestown Wind Turbine Sector Wind energy Facility Type Commercial Scale Wind Facility...

  16. Fenner Wind Power Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power Project Jump to: navigation, search Name Fenner Wind Power Project Facility Fenner Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility...

  17. Shane Cowell Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Shane Cowell Wind Farm Jump to: navigation, search Name Shane Cowell Wind Farm Facility Shane Cowell Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility...

  18. Antelope Ridge Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Antelope Ridge Wind Farm Jump to: navigation, search Name Antelope Ridge Wind Farm Facility Antelope Ridge Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility...

  19. Locust Ridge Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Locust Ridge Wind Farm Jump to: navigation, search Name Locust Ridge Wind Farm Facility Locust Ridge Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility...

  20. Rosiere Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Rosiere Wind Farm Jump to: navigation, search Name Rosiere Wind Farm Facility Rosiere Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  1. Paynes Ferry Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Paynes Ferry Wind Farm Jump to: navigation, search Name Paynes Ferry Wind Farm Facility Paynes Ferry Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility...

  2. Marengo Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Marengo Wind Farm Jump to: navigation, search Name Marengo Wind Farm Facility Marengo Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  3. Stoney Corners Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Stoney Corners Wind Farm Jump to: navigation, search Name Stoney Corners Wind Farm Facility Stoney Corners Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility...

  4. Marshall Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Marshall Wind Farm Jump to: navigation, search Name Marshall Wind Farm Facility Marshall Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  5. Laredo Ridge Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Laredo Ridge Wind Farm Jump to: navigation, search Name Laredo Ridge Wind Farm Facility Laredo Ridge Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility...

  6. Nine Canyon Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Nine Canyon Wind Farm Jump to: navigation, search Name Nine Canyon Wind Farm Facility Nine Canyon Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status...

  7. Casper Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Casper Wind Farm Jump to: navigation, search Name Casper Wind Farm Facility Casper Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  8. Wallys Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wallys Wind Farm Jump to: navigation, search Name Wallys Wind Farm Facility Wallys Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  9. Cassia Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Cassia Wind Farm Jump to: navigation, search Name Cassia Wind Farm Facility Cassia Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  10. Hatchet Ridge Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Hatchet Ridge Wind Farm Jump to: navigation, search Name Hatchet Ridge Wind Farm Facility Hatchet Ridge Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility...

  11. Cedar Point Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Cedar Point Wind Farm Jump to: navigation, search Name Cedar Point Wind Farm Facility Cedar Point Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status...

  12. Allegheny Ridge Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Allegheny Ridge Wind Farm Jump to: navigation, search Name Allegheny Ridge Wind Farm Facility Allegheny Ridge wind farm Sector Wind energy Facility Type Commercial Scale Wind...

  13. Greensburg Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Greensburg Wind Farm Jump to: navigation, search Name Greensburg Wind Farm Facility Greensburg Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  14. Wheatfield Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wheatfield Wind Farm Jump to: navigation, search Name Wheatfield Wind Farm Facility Wheatfield Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  15. Ewington Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Ewington Wind Farm Jump to: navigation, search Name Ewington Wind Farm Facility Ewington Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  16. Uilk Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Uilk Wind Farm Jump to: navigation, search Name Uilk Wind Farm Facility Uilk Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Developer...

  17. Octotillo Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Octotillo Wind Farm Jump to: navigation, search Name Octotillo Wind Farm Facility Octotillo Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  18. Don Sneve Wind Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Sneve Wind Project Jump to: navigation, search Name Don Sneve Wind Project Facility Don Sneve Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  19. Spring Canyon Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Spring Canyon Wind Farm Jump to: navigation, search Name Spring Canyon Wind Farm Facility Spring Canyon Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility...

  20. Green Mountain Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Farm Jump to: navigation, search Name Green Mountain Wind Farm Facility Green Mountain Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  1. Red Canyon Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Canyon Wind Farm Jump to: navigation, search Name Red Canyon Wind Farm Facility Red Canyon Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  2. Kansas/Wind Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Guidebook >> Kansas Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  3. Idaho/Wind Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Guidebook >> Idaho Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  4. Nevada/Wind Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Guidebook >> Nevada Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  5. Iowa/Wind Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Guidebook >> Iowa Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  6. Small Wind Guidebook | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Home >> Wind >> Small Wind Guidebook WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  7. Maine/Wind Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Guidebook >> Maine Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  8. Hawaii/Wind Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Guidebook >> Hawaii Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  9. Oregon/Wind Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Guidebook >> Oregon Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  10. Alaska/Wind Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Guidebook >> Alaska Wind Resources WindTurbine-icon.png Small Wind Guidebook * Introduction * First, How Can I Make My Home More Energy Efficient? * Is Wind Energy Practical...

  11. Olsen Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Olsen Wind Farm Jump to: navigation, search Name Olsen Wind Farm Facility Olsen Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  12. Sigel Wind Park | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Sigel Wind Park Jump to: navigation, search Name Sigel Wind Park Facility Sigel Wind Park Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  13. Minden Wind Park | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Minden Wind Park Jump to: navigation, search Name Minden Wind Park Facility Minden Wind Park Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  14. Fossil Gulch Wind Park | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Gulch Wind Park Jump to: navigation, search Name Fossil Gulch Wind Park Facility Fossil Gulch Wind Park Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  15. Criterion Wind Park | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Criterion Wind Park Jump to: navigation, search Name Criterion Wind Park Facility Criterion Wind Park Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  16. Golden Valley Wind Park | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Park Jump to: navigation, search Name Golden Valley Wind Park Facility Golden Valley Wind Park Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  17. Condon Wind Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Condon Wind Project Jump to: navigation, search Name Condon Wind Project Facility Condon Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  18. Turkey Track Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Track Wind Farm Jump to: navigation, search Name Turkey Track Wind Farm Facility Turkey Track Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  19. Spanish Fork Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Fork Wind Farm Jump to: navigation, search Name Spanish Fork Wind Farm Facility Spanish Fork Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  20. Wind Power (pbl/generation)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Generation Hydro Power Wind Power Monthly GSP BPA White Book Dry Year Tools Firstgov Wind Power (Updated June 16, 2014) Project Descriptions Foote Creek I Wind Project (Carbon...

  1. AWEA Wind Energy Fall Symposium

    Energy.gov [DOE]

    The AWEA Wind Energy Fall Symposium gathers wind energy professionals for informal yet productive interactions with industry peers. Jose Zayas, Director, Wind & Water Power Technologies Office,...

  2. Modular Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Signal Hill, California Sector: Wind energy Product: California-based wind turbine blade designer in stealth mode. References: Modular Wind1 This article is a stub. You can...

  3. Wind 7 | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name: Wind 7 Place: Eckernfoerde, Schleswig-Holstein, Germany Zip: 24340 Sector: Wind energy Product: Eckernfoerde-based company that develops & operates wind power projects in...

  4. Wind | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wind Wind The U.S. wind energy industry continued its strong growth in 2015, adding new generating capacity faster than any other source of electricity generation. Get the latest update on the state of the industry in our 2015 Wind Market Reports. The U.S. wind energy industry continued its strong growth in 2015, adding new generating capacity faster than any other source of electricity generation. Get the latest update on the state of the industry in our 2015 Wind Market Reports. The United

  5. Wind Power Career Chat

    SciTech Connect

    L. Flowers

    2011-01-01

    This document will teach students about careers in the wind energy industry. Wind energy, both land-based and offshore, is expected to provide thousands of new jobs in the next several decades. Wind energy companies are growing rapidly to meet America's demand for clean, renewable, and domestic energy. These companies need skilled professionals. Wind power careers will require educated people from a variety of areas. Trained and qualified workers manufacture, construct, operate, and manage wind energy facilities. The nation will also need skilled researchers, scientists, and engineers to plan and develop the next generation of wind energy technologies.

  6. Research | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Research During the past 35 years of wind research and development, NREL has pioneered many of the components and systems that have taken wind energy technologies to new heights. Through its expertise and one-of-a-kind assets, the research performed at NREL has become a guiding force, advancing wind technologies from initial concepts to deployment. A photo of six megawatt-scale wind turbines at various heights on a flat field. Land-Based Wind A photo of a singular wind turbine on a yellow

  7. See the Wind

    Education - Teach & Learn

    The goal of this activity is to help students see the difference in the speed and smoothness of the wind at different altitudes above the earth. This is important for wind engineers as they seek to place their wind turbines in the fastest and smoothest winds possible. It is also a major reason that wind turbines are getting larger and higher in the sky, and is why we are starting to see wind turbines in the plains and out in the ocean near the coast. Teacher background and assessment sheets are provided.

  8. Wind energy information guide

    SciTech Connect

    1996-04-01

    This book is divided into nine chapters. Chapters 1--8 provide background and annotated references on wind energy research, development, and commercialization. Chapter 9 lists additional sources of printed information and relevant organizations. Four indices provide alphabetical access to authors, organizations, computer models and design tools, and subjects. A list of abbreviations and acronyms is also included. Chapter topics include: introduction; economics of using wind energy; wind energy resources; wind turbine design, development, and testing; applications; environmental issues of wind power; institutional issues; and wind energy systems development.

  9. Wind Vision: A New Era for Wind Power

    Energy.gov [DOE] (indexed site)

    Highlights Wind Vision: A New Era for Wind Power in the United States Wind Vision Objectives The U.S. Department of Energy's (DOE's) Wind and Water Power Technologies Office has ...

  10. 20% Wind Energy by 2030: Increasing Wind Energy's Contribution...

    Energy Saver

    % Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply 20% Wind Energy by 2030: Increasing Wind Energy's Contribution to U.S. Electricity Supply ...

  11. EERE 2014 Wind Technologies Market Report Finds Wind Power at...

    Energy Saver

    2014 Wind Technologies Market Report Finds Wind Power at Record Low Prices EERE 2014 Wind Technologies Market Report Finds Wind Power at Record Low Prices August 10, 2015 - 11:00am ...

  12. Ion-driven instabilities in the solar wind: Wind observations...

    Office of Scientific and Technical Information (OSTI)

    Ion-driven instabilities in the solar wind: Wind observations of 19 March 2005 Citation Details In-Document Search Title: Ion-driven instabilities in the solar wind: Wind ...

  13. 2008 Wind Energy Projects, Wind Powering America (Poster)

    SciTech Connect

    Not Available

    2009-01-01

    The Wind Powering America program produces a poster at the end of every calendar year that depicts new U.S. wind energy projects. The 2008 poster includes the following projects: Stetson Wind Farm in Maine; Dutch Hill Wind Farm in New York; Grand Ridge Wind Energy Center in Illinois; Hooper Bay, Alaska; Forestburg, South Dakota; Elbow Creek Wind Project in Texas; Glacier Wind Farm in Montana; Wray, Colorado; Smoky Hills Wind Farm in Kansas; Forbes Park Wind Project in Massachusetts; Spanish Fork, Utah; Goodland Wind Farm in Indiana; and the Tatanka Wind Energy Project on the border of North Dakota and South Dakota.

  14. Community Wind Handbook/Conduct a Wind Resource Estimate | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    "Windustry. Wind Resource Assessment" "AWS Scientific for the National Renewable Energy Laboratory. Wind Resource Assessment Handbook" Retrieved from "http:...

  15. Collegiate Wind Competition Wind Tunnel Specifications | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Wind Tunnel Specifications Collegiate Wind Competition Wind Tunnel Specifications Collegiate Wind Competition Wind Tunnel Specifications Teams competing in the U.S. Department of Energy Collegiate Wind Competition must design a prototype wind turbine that fits inside the wind tunnel created to test the performance of each team's project. The tunnel has a "draw down" configuration, introduced by the fan, that sucks air through the box. There are two debris filters, one at

  16. 2016 News | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2016 News Below are news stories related to Wind. RSS Learn about RSS. September 13, 2016 Survey Reveals Projections for Lower Wind Energy Costs The cost of producing electricity ...

  17. ARM - Measurement - Horizontal wind

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    wind ARM Data Discovery Browse Data Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Horizontal wind The horizontal ...

  18. 2012 News | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    2 News Below are news stories related to Wind. RSS Learn about RSS. September 25, 2012 Wind Energy Research Institutes Join Forces at the Inaugural Meeting of the North American ...

  19. 2010 News | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    0 News Below are news stories related to Wind. RSS Learn about RSS. October 27, 2010 Offshore Wind Energy Poised to Play a Vital Role in Future U.S. Energy Markets A new report ...

  20. DOE Wind Program Update

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wind Program Update March 2007 P.J. Dougherty Wind and Hydropower Technologies Program Since the 1970's, DOE has spent just over 1B in developing a market, which will reach over ...

  1. 2011 News | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    1 News Below are news stories related to Wind. RSS Learn about RSS. December 9, 2011 Saving Farmland One Wind Energy Project at a Time Rich VanderVeen, president of Mackinaw Power, ...

  2. WINDExchange: Learn About Wind

    WindExchange

    wind turbines in a row at sunset. The sky is varying hues of orange and the sun is halfway past the horizon. Wind power comes in many sizes. Here, several...

  3. WindWaveFloat

    SciTech Connect

    Weinstein, Alla

    2011-11-01

    Presentation from the 2011 Water Peer Review includes in which principal investigator Alla Weinstein discusses project progress in development of a floating offshore wind structure - the WindFloat - and incorporation therin of a Spherical Wave Energy Device.

  4. Articles about Offshore Wind

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    unprecedented information on offshore wind patterns, making it possible to harness wind power in entirely new locations.

    Mon, 07 Dec 2015 18:52:00 +0000...

  5. Renaissance for wind power

    SciTech Connect

    Flavin, C.

    1981-10-01

    Wind research and development during the 1970s and recent studies showing wind to be a feasible source of both electrical and mechanical power are behind the rapid expansion of wind energy. Improved technology should make wind energy economical in most countries having sufficient wind and appropriate needs. A form of solar energy, winds form a large pattern of global air circulation because the earth's rotation causes differences in pressure and oceans cause differences in temperature. New development in the ancient art of windmill making date to the 1973 oil embargo, but wind availability must be determined at local sites to determine feasibility. Whether design features of the new technology and the concept of large wind farms will be incorporated in national energy policies will depend on changing attitudes, acceptance by utilities, and the speed with which new information is developed and disseminated. 44 references, 6 figures. (DCK)

  6. Research Facilities | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Photo of five wind turbines of varying sizes in the background and an office building in the foreground. Field Test Sites A photo of two people wearing hard hats in front of a wind ...

  7. Wind Energy Basics | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... How Wind Turbines Work U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy. Photo of a girl and a boy standing beneath a large wind turbine. Students can ...

  8. Distributed Wind 2015

    Energy.gov [DOE]

    Distributed Wind 2015 is committed to the advancement of both distributed and community wind energy. This two day event includes a Business Conference with sessions focused on advancing the...

  9. NREL: Wind Research - Events

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Events Below are upcoming events related to wind energy technology. December 2015 Wind and Water Power Small Business Voucher Open House December 2, 2015, 9:00 - 1:00 MST Boulder,...

  10. See the Wind

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... Engineers are also concerned about wind shear and turbulence as this can cause a great deal of stress on their gearbox and bearings in their turbines. Characterizing Shear and Wind ...

  11. Distributed Wind Energy Workshop

    Energy.gov [DOE]

    Join instructor Brent Summerville for a fun and interactive workshop at Appalachian State University's Small Wind Research and Demonstration Site. Learn about a variety of distributed wind energy...

  12. Wind Vision | Department of Energy

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    A New Era for Wind Power in the United States The Wind Vision report updates the Department of Energy's 2008 20% Wind Energy by 2030 through analysis of scenarios of wind power ...

  13. WIND ENERGY | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    WIND ENERGY WIND ENERGY WIND ENERGY POSTER (3.22 MB) More Documents & Publications WIND ENERGY Download LPO's Illustrated Poster Series LPO Financial Performance Report DOE-LPO_Email-Update_001_Through_1

  14. 2007 News | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    7 News Below are news stories related to Wind. RSS Learn about RSS. June 27, 2007 U.S., Danish laboratories to cooperate on wind energy research NREL and Denmark's Risø National Laboratory, Technical University of Denmark (DTU), have signed an agreement to cooperate closely on improving wind energy technologies. June 25, 2007 Large Wind Turbine Blade Test Facilities to be in Mass., Texas NREL will work with consortiums from Texas and Massachusetts to design, build and operate new facilities to

  15. Wind Energy Markets, 2. edition

    SciTech Connect

    2007-11-15

    The report provides an overview of the global market for wind energy, including a concise look at wind energy development in key markets including installations, government incentives, and market trends. Topics covered include: an overview of wind energy including the history of wind energy production and the current market for wind energy; key business drivers of the wind energy market; barriers to the growth of wind energy; key wind energy trends and recent developments; the economics of wind energy, including cost, revenue, and government subsidy components; regional and national analyses of major wind energy markets; and, profiles of key wind turbine manufacturers.

  16. Wind farm electrical system

    DOEpatents

    Erdman, William L.; Lettenmaier, Terry M.

    2006-07-04

    An approach to wind farm design using variable speed wind turbines with low pulse number electrical output. The output of multiple wind turbines are aggregated to create a high pulse number electrical output at a point of common coupling with a utility grid network. Power quality at each individual wind turbine falls short of utility standards, but the aggregated output at the point of common coupling is within acceptable tolerances for utility power quality. The approach for aggregating low pulse number electrical output from multiple wind turbines relies upon a pad mounted transformer at each wind turbine that performs phase multiplication on the output of each wind turbine. Phase multiplication converts a modified square wave from the wind turbine into a 6 pulse output. Phase shifting of the 6 pulse output from each wind turbine allows the aggregated output of multiple wind turbines to be a 24 pulse approximation of a sine wave. Additional filtering and VAR control is embedded within the wind farm to take advantage of the wind farm's electrical impedence characteristics to further enhance power quality at the point of common coupling.

  17. Wind power outlook 2006

    SciTech Connect

    anon.

    2006-04-15

    This annual brochure provides the American Wind Energy Association's up-to-date assessment of the wind industry in the United States. This 2006 general assessment shows positive signs of growth, use and acceptance of wind energy as a vital component of the U.S. energy mix.

  18. Wind Economic Development (Postcard)

    SciTech Connect

    Not Available

    2011-08-01

    The U.S. Department of Energy's Wind Powering America initiative provides information on the economic development benefits of wind energy. This postcard is a marketing piece that stakeholders can provide to interested parties; it will guide them to the economic development benefits section on the Wind Powering America website.

  19. Wind power soars

    SciTech Connect

    Flavin, C.

    1996-12-31

    Opinions on the world market for wind power are presented in this paper. Some data for global wind power generating capacity are provided. European and other markets are discussed individually. Estimated potential for wind power is given for a number of countries. 3 figs.

  20. Wind Vision | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Information Resources » Wind Vision Wind Vision Wind Vision About In support of the President's strategy to diversify our nation's clean energy mix, an elite team of researchers, academics, scientists, engineers, and wind industry experts revisited the findings of the Energy Department's 2008 20% Wind by 2030 report and built upon its findings to conceptualize a new vision for wind energy through 2050. The Wind Vision Report takes America's current installed wind power capacity across all

  1. Wind for Schools Curriculum Brief

    SciTech Connect

    2010-08-01

    This fact sheet provides an overview of wind energy curricula as it relates to the Wind for Schools project.

  2. WINDExchange: Wind Maps and Data

    WindExchange

    Wind Maps and Data WINDExchange provides wind maps and anemometer data to help homeowners, communities, states, and regions learn more about their available wind resources and plan wind energy projects. WINDExchange also maintains more than a decade of installed capacity maps showing how wind energy has progressed across the United States over time as advances in wind technology and materials make wind resources more available. A map illustration of the United States showing the various wind

  3. NREL: Wind Research - Winds of Change Blowing for Wind Farm Research...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Winds of Change Blowing for Wind Farm Research with NREL's SOWFA Tool Simulation from SOWFA that shows a number of wind turbines and how the wind is flowing between them, with the ...

  4. Wind energy applications guide

    SciTech Connect

    anon.

    2001-01-01

    The brochure is an introduction to various wind power applications for locations with underdeveloped transmission systems, from remote water pumping to village electrification. It includes an introductory section on wind energy, including wind power basics and system components and then provides examples of applications, including water pumping, stand-alone systems for home and business, systems for community centers, schools, and health clinics, and examples in the industrial area. There is also a page of contacts, plus two specific example applications for a wind-diesel system for a remote station in Antarctica and one on wind-diesel village electrification in Russia.

  5. Wind Energy Basics | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Energy Basics We have been harnessing the wind's energy for hundreds of years. From old Holland to farms in the United States, windmills have been used for pumping water or grinding grain. Today, the windmill's modern equivalent-a wind turbine-can use the wind's energy to generate electricity. Text Version Wind turbines, like windmills, are mounted on a tower to capture the most energy. At 100 feet (30 meters) or more aboveground, they can take advantage of the faster and less turbulent

  6. Arkansas/Wind Resources/Full Version | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Distributed Wind Energy Association Arkansas Wind Resources Arkansas Energy Office: Wind AWEA State Wind Energy Statistics: Arkansas Southeastern Wind Coalition...

  7. Wind tower service lift

    DOEpatents

    Oliphant, David; Quilter, Jared; Andersen, Todd; Conroy, Thomas

    2011-09-13

    An apparatus used for maintaining a wind tower structure wherein the wind tower structure may have a plurality of legs and may be configured to support a wind turbine above the ground in a better position to interface with winds. The lift structure may be configured for carrying objects and have a guide system and drive system for mechanically communicating with a primary cable, rail or other first elongate member attached to the wind tower structure. The drive system and guide system may transmit forces that move the lift relative to the cable and thereby relative to the wind tower structure. A control interface may be included for controlling the amount and direction of the power into the guide system and drive system thereby causing the guide system and drive system to move the lift relative to said first elongate member such that said lift moves relative to said wind tower structure.

  8. Wind energy conversion system

    DOEpatents

    Longrigg, Paul

    1987-01-01

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

  9. Kansas Wind Energy Consortium

    SciTech Connect

    Gruenbacher, Don

    2015-12-31

    This project addresses both fundamental and applied research problems that will help with problems defined by the DOE “20% Wind by 2030 Report”. In particular, this work focuses on increasing the capacity of small or community wind generation capabilities that would be operated in a distributed generation approach. A consortium (KWEC – Kansas Wind Energy Consortium) of researchers from Kansas State University and Wichita State University aims to dramatically increase the penetration of wind energy via distributed wind power generation. We believe distributed generation through wind power will play a critical role in the ability to reach and extend the renewable energy production targets set by the Department of Energy. KWEC aims to find technical and economic solutions to enable widespread implementation of distributed renewable energy resources that would apply to wind.

  10. Wind Vision | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wind Vision Wind Vision Wind Vision Introduction U.S. Wind Power Impacts Roadmap Download Wind Vision: A New Era for Wind Power in the United States The Wind Vision report updates the Department of Energy's 2008 20% Wind Energy by 2030 through analysis of scenarios of wind power supplying 10% of national end-use electricity demand by 2020, 20% by 2030, and 35% by 2050. With more than 4.5% of the nation's electricity supplied by wind energy today, the Department of Energy has collaborated with

  11. WINDExchange: Where Is Wind Power?

    WindExchange

    Where Is Wind Power? WINDExchange offers maps to help you visualize the wind resource at a local level and to show how much wind power has been installed in the United States. How much wind power is on my land? Go to the wind resource maps. Go to the wind resource maps. Go to the wind resource maps. If you want to know how much wind power is in a particular area, these wind resource maps can give you a visual indication of the average wind speeds to a local level such as a neighborhood. These

  12. 2014 WIND POWER PROGRAM PEER REVIEW-DISTRIBUTED WIND

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Distributed Wind March 24-27, 2014 Wind Energy Technologies PR-5000-62152 2 Contents Distributed Wind Annual Market Report on Wind Technologies in Distributed Applications & Distributed Wind Policy Comparison Tool-Alice Orrell, Pacific Northwest National Laboratory Government, Industry, International Partnerships-Karin Sinclair, National Renewable Energy Laboratory Certifying Distributed Wind Turbines-Brent Summerville, Small Wind Certification Council Loads Analysis and Standards

  13. Chaninik Wind Group: Wind Heat Smart Grids

    Office of Environmental Management (EM)

    Wind Heat System Components * ETS heat output at high is equivalent to a Toyostove Laser 56 * .10 per kwh is equivalent to buying diesel at 2.90 per gallon * Current diesel ...

  14. Small Wind Guidebook/Is Wind Energy Practical for Me | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind GuidebookIs Wind Energy Practical for Me < Small Wind Guidebook Jump to: navigation, search Print PDF WIND ENERGY STAKEHOLDER ENGAGEMENT & OUTREACHSmall Wind Guidebook...

  15. WINDExchange: Wind Energy Market Sectors

    WindExchange

    Market Sectors Printable Version Bookmark and Share Utility-Scale Wind Distributed Wind Motivations for Buying Wind Power Buying Wind Power Selling Wind Power Wind Energy Market Sectors U.S. power plants generate electricity for homes, factories, and businesses from a variety of resources, including coal, hydro, natural gas, nuclear, petroleum, and (non-hydro) renewable resources such as wind and solar energy. This power generation mix varies significantly across the country depending on

  16. SERI Wind Energy Program

    SciTech Connect

    Noun, R. J.

    1983-06-01

    The SERI Wind Energy Program manages the areas or innovative research, wind systems analysis, and environmental compatibility for the U.S. Department of Energy. Since 1978, SERI wind program staff have conducted in-house aerodynamic and engineering analyses of novel concepts for wind energy conversion and have managed over 20 subcontracts to determine technical feasibility; the most promising of these concepts is the passive blade cyclic pitch control project. In the area of systems analysis, the SERI program has analyzed the impact of intermittent generation on the reliability of electric utility systems using standard utility planning models. SERI has also conducted methodology assessments. Environmental issues related to television interference and acoustic noise from large wind turbines have been addressed. SERI has identified the causes, effects, and potential control of acoustic noise emissions from large wind turbines.

  17. ARM - Lesson Plans: Winds

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Winds Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Lesson Plans: Winds Objective The objective of this activity is to investigate how pressure differences create wind. Materials Each student or group of students will need the following: Balloon (long balloons or round ones) Bicycle pump

  18. Enabling Wind Power Nationwide

    SciTech Connect

    Jose, Zayas; Michael, Derby; Patrick, Gilman; Ananthan, Shreyas; Lantz, Eric; Cotrell, Jason; Beck, Fredic; Tusing, Richard

    2015-05-01

    Leveraging this experience, the U.S. Department of Energy’s (DOE’s) Wind and Water Power Technologies Office has evaluated the potential for wind power to generate electricity in all 50 states. This report analyzes and quantifies the geographic expansion that could be enabled by accessing higher above ground heights for wind turbines and considers the means by which this new potential could be responsibly developed.

  19. Research Staff | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Research Staff Learn more about the expertise and technical skills of the wind energy research team and staff at NREL by reading their biographical information. Photo of Daniel Laird Daniel Laird Center Director Dr. Daniel Laird is director of the National Wind Technology Center (NWTC). Laird also serves as an executive committee member of the U.S. Department of Energy's (DOE's) Atmosphere to Electrons Wind Plant Optimization Initiative and provides leadership in the focus areas of high-fidelity

  20. 2014 News | Wind | NREL

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    4 News Below are news stories related to Wind. RSS Learn about RSS. November 12, 2014 NREL Research Facilitates Several Multi-Party Collaborations in Advanced Controls NREL's two Advanced Controls Research Turbines are providing the basis for several collaborative research projects involving multiple partners to advance the state-of-the-art wind turbine controls. November 6, 2014 NREL Analyzes Floating Offshore Wind Technology for Statoil NREL engineers traveled to Oslo, Norway, to meet with

  1. Energy in the Wind

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Provi and BP Energy in the Wind - Exploring Basic Electrical Concepts by Modeling Wind Turbines Curriculum: Wind Power (simple machines, aerodynamics, weather/climatology, leverage, mechanics, atmospheric pressure, and energy resources/transformations) Grade Level: High School Small groups: 2 students Time: Introductory packet will take 2-3 periods. Scientific investigation will take 2-3 periods. (45-50 minute periods) Summary: Students explore basic electrical concepts. Students are introduced

  2. WINDExchange: Buying Wind Power

    WindExchange

    Buying Wind Power Individuals, communities, businesses, and government entities may decide that buying wind power to supply their energy needs is the right fit. There are several ways to purchase wind power. Green Power Marketing Green power marketing refers to green power being offered by multiple suppliers in a competitive marketplace. In states that have established retail competition, customers may be able to purchase green power from a competitive supplier. Learn more about green power

  3. Wind Energy Impacts: Slides

    WindExchange

    help to alleviate common misconceptions about wind energy. Wind Energy Impacts Photo from Invenergy LLC, NREL 14371 Wildlife impacts vary by location,* and new developments have helped to reduce these effects. Photo from LuRay Parker, NREL 17429 Wind Energy Impacts Pre- and post-development studies, educated siting, and curtailment during high-activity periods have decreased wildlife impacts.** Additional strategies are being researched to better understand and further decrease impacts.

  4. Silver Star Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Star Wind Farm Jump to: navigation, search Name Silver Star Wind Farm Facility Silver Star Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  5. University of Delaware Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name University of Delaware Wind Facility University of Delaware Wind Sector Wind energy Facility Type Community Wind Facility Status In Service Owner University of...

  6. West Stevens Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Jump to: navigation, search Name West Stevens Wind Facility West Stevens Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status Under Construction Developer...

  7. Brown County Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Jump to: navigation, search Name Brown County Wind Facility Brown County Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Adams Electric...

  8. Kingdom Community Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name Kingdom Community Wind Facility Kingdom Community Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Green Mountain...

  9. Wing River Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    to: navigation, search Name Wing River Wind Farm Facility Wing River Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Wing River...

  10. Osage Municipal Utilities Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name Osage Municipal Utilities Wind Facility Osage Municipal Utilities Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Osage...

  11. Wessington Springs Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    to: navigation, search Name Wessington Springs Wind Farm Facility Wessington Springs Wind Energy Center Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  12. Junction Hilltop Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    navigation, search Name Junction Hilltop Wind Facility Junction Hilltop Wind Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Community Owned...

  13. Franklin County Wind LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    search Name Franklin County Wind LLC Facility Franklin County Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Franklin...

  14. MWRA Deer Island Wind | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    navigation, search Name MWRA Deer Island Wind Facility MWRA Deer Island Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner MWRA Deer...

  15. Barton Chapel Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    navigation, search Name Barton Chapel Wind Farm Facility Barton Chapel Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Iberdrola...

  16. Wolverine Creek Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Jump to: navigation, search Name Wolverine Creek Wind Farm Facility Wolverine Creek Wind Energy Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In...

  17. Wapsipinicon Wind Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    navigation, search Name Wapsipinicon Wind Project Facility Wapsipinicon Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner EnXco...

  18. Silver Sage Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Sage Wind Farm Jump to: navigation, search Name Silver Sage Wind Farm Facility Silver Sage Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  19. Ashtabula II Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Wind Farm Jump to: navigation, search Name Ashtabula II Wind Farm Facility Ashtabula II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  20. Marengo II Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Wind Farm Jump to: navigation, search Name Marengo II Wind Farm Facility Marengo II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  1. Klondike II Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Klondike II Wind Farm Jump to: navigation, search Name Klondike II Wind Farm Facility Klondike II Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  2. Harvest Wind Farm II | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Jump to: navigation, search Name Harvest Wind Farm II Facility Harvest Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner John...

  3. Kotzebue Wind Project II | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Jump to: navigation, search Name Kotzebue Wind Project II Facility Kotzebue Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  4. Tatanka Wind Project II | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    II Jump to: navigation, search Name Tatanka Wind Project II Facility Tatanka Wind Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  5. Crownbutte Wind Power LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Crownbutte Wind Power LLC Jump to: navigation, search Name: Crownbutte Wind Power LLC Place: Mandan, North Dakota Zip: 58554 Sector: Wind energy Product: North Dakota wind power...

  6. Northwestern Wind Power | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power Jump to: navigation, search Name: Northwestern Wind Power Place: Wasco, Oregon Zip: OR 97065 Sector: Wind energy Product: US-based wind project developer. Coordinates:...

  7. Daqing Longjiang Wind Power | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Longjiang Wind Power Jump to: navigation, search Name: Daqing Longjiang Wind Power Place: Daqing, Heilongjiang Province, China Zip: 163316 Sector: Wind energy Product: Local wind...

  8. Laizhou Luneng Wind Power | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Laizhou Luneng Wind Power Jump to: navigation, search Name: Laizhou Luneng Wind Power Place: Laizhou, Shandong Province, China Sector: Wind energy Product: A wind project...

  9. Clear Wind Renewable Power | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Renewable Power Jump to: navigation, search Name: Clear Wind Renewable Power Place: Minneapolis, Minnesota Zip: 55416 Sector: Wind energy Product: Clear Wind focuses its...

  10. Padoma Wind Power LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Padoma Wind Power LLC Jump to: navigation, search Name: Padoma Wind Power LLC Place: La Jolla, California Zip: 92037 Sector: Wind energy Product: A wind energy consulting and...

  11. Evergreen Wind Power LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Power LLC Jump to: navigation, search Name: Evergreen Wind Power LLC Place: Bangor, Maine Zip: 4401 Sector: Wind energy Product: Formed to develop wind projects in Maine....

  12. Hardscrabble Wind Power Project | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Hardscrabble Wind Power Project Jump to: navigation, search Name Hardscrabble Wind Power Project Facility Hardscrabble Wind Power Project Sector Wind energy Facility Type...

  13. Heilongjiang Lishu Wind Power | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Lishu Wind Power Jump to: navigation, search Name: Heilongjiang Lishu Wind Power Place: Heilongjiang Province, China Sector: Wind energy Product: China-based wind project developer...

  14. TS Wind Power Developers | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    TS Wind Power Developers Jump to: navigation, search Name: TS Wind Power Developers Place: Satara, Maharashtra, India Sector: Wind energy Product: Setting up 30MW wind farm in...

  15. Bluewater Wind Rhode Island | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Island Sector Wind energy Facility Type Offshore Wind Facility Status Proposed Owner NRG Bluewater Wind Developer NRG Bluewater Wind Location Atlantic Ocean RI Coordinates...

  16. Wind Integration National Dataset Toolkit | Grid Modernization...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Wind Integration National Dataset Toolkit The Wind Integration National Dataset (WIND) Toolkit is an update and expansion of the Eastern Integration Data Set and Western Wind ...

  17. Campbell Hill Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Hill Wind Farm Jump to: navigation, search Name Campbell Hill Wind Farm Facility Campbell Hill Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  18. Articles about Distributed Wind | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Articles about Distributed Wind Articles about Distributed Wind Below are stories about distributed wind featured by the U.S. Department of Energy (DOE) Wind Program. October 1,...

  19. Camp Springs Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Farm Jump to: navigation, search Name Camp Springs Wind Farm Facility Camp Springs Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner...

  20. Hot Springs Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Wind Farm Jump to: navigation, search Name Hot Springs Wind Farm Facility Hot Springs Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Idaho...