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Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
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1

A reduced Blade-Vortex Interaction rotor  

E-Print Network [OSTI]

A REDUCED BLADE - VORTEX INTERACTION ROTOR A Thesis by SOMNATH MANI . Submitted to the Offic of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1996 Major... Subject: Aerospace Engineering A REDUCED BLADE - VORTEX INTERACTION ROTOR A Thesis by SOMNATH MANI Submitted to Texas A@M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content...

Mani, Somnath

2012-06-07T23:59:59.000Z

2

Method and apparatus for reducing rotor blade deflections, loads, and/or peak rotational speed  

DOE Patents [OSTI]

A method for reducing at least one of loads, deflections of rotor blades, or peak rotational speed of a wind turbine includes storing recent historical pitch related data, wind related data, or both. The stored recent historical data is analyzed to determine at least one of whether rapid pitching is occurring or whether wind speed decreases are occurring. A minimum pitch, a pitch rate limit, or both are imposed on pitch angle controls of the rotor blades conditioned upon results of the analysis.

Moroz, Emilian Mieczyslaw; Pierce, Kirk Gee

2006-10-17T23:59:59.000Z

3

Vibration analysis of rotor systems using reduced subsystem models  

E-Print Network [OSTI]

and concern. Thanks are also extended to Dr. Alan B. Alter and Dr. Charles F. Rettleborough for their contribution to my academic program at Texas A&M University. NOMENCLATURE [] [A] [Cl [D?l [r?] (F} [G] [l-l ['~, , l ['J, ] Jrz [K] [Ml {p... of the spinning rotor can be written as m. R. Z + f. = f. + m. ai?y + m. ai?p i iZ iZ iX i iX i iY + '2 id&iY ?iY ?iY ' & iP&ix ' e iXZ ' & iYZ (la) 2 ?i id( iX iX ?ix ~ ip~iY ~ iYZ ~iXZ (lb) where / Hydrogen I or o 0 p um'p Hain Combusrion Chamber Z...

Fan, Uei-Jiun

1985-01-01T23:59:59.000Z

4

Reducing bicycle crime Bicycles provide a great way  

E-Print Network [OSTI]

Reducing bicycle crime C rim e reduction advice #12;Bicycles provide a great way of getting out, you will lessen your chances of becoming a victim of bicycle crime. Security measures · Register your bicycle at www.immobilise.com or www.bikeregister.com so if the worst happens and your bike is stolen

Royal Holloway, University of London

5

Separators for flywheel rotors  

DOE Patents [OSTI]

A separator forms a connection between the rotors of a concentric rotor assembly. This separator allows for the relatively free expansion of outer rotors away from inner rotors while providing a connection between the rotors that is strong enough to prevent disassembly. The rotor assembly includes at least two rotors referred to as inner and outer flywheel rings or rotors. This combination of inner flywheel ring, separator, and outer flywheel ring may be nested to include an arbitrary number of concentric rings. The separator may be a segmented or continuous ring that abuts the ends of the inner rotor and the inner bore of the outer rotor. It is supported against centrifugal loads by the outer rotor and is affixed to the outer rotor. The separator is allowed to slide with respect to the inner rotor. It is made of a material that has a modulus of elasticity that is lower than that of the rotors. 10 figs.

Bender, D.A.; Kuklo, T.C.

1998-07-07T23:59:59.000Z

6

Separators for flywheel rotors  

DOE Patents [OSTI]

A separator forms a connection between the rotors of a concentric rotor assembly. This separator allows for the relatively free expansion of outer rotors away from inner rotors while providing a connection between the rotors that is strong enough to prevent disassembly. The rotor assembly includes at least two rotors referred to as inner and outer flywheel rings or rotors. This combination of inner flywheel ring, separator, and outer flywheel ring may be nested to include an arbitrary number of concentric rings. The separator may be a segmented or continuous ring that abuts the ends of the inner rotor and the inner bore of the outer rotor. It is supported against centrifugal loads by the outer rotor and is affixed to the outer rotor. The separator is allowed to slide with respect to the inner rotor. It is made of a material that has a modulus of elasticity that is lower than that of the rotors.

Bender, Donald A. (Dublin, CA); Kuklo, Thomas C. (Oakdale, CA)

1998-01-01T23:59:59.000Z

7

Polygonal shaft hole rotor  

DOE Patents [OSTI]

A laminated rotor for an induction motor has a plurality of ferro-magnetic laminations mounted axially on a rotor shaft. Each of the plurality of laminations has a central aperture in the shape of a polygon with sides of equal length. The laminations are alternatingly rotated 180.degree. from one another so that the straight sides of the polygon shaped apertures are misaligned. As a circular rotor shaft is press fit into a stack of laminations, the point of maximum interference occurs at the midpoints of the sides of the polygon (i.e., at the smallest radius of the central apertures of the laminations). Because the laminates are alternatingly rotated, the laminate material at the points of maximum interference yields relatively easily into the vertices (i.e., the greatest radius of the central aperture) of the polygonal central aperture of the next lamination as the shaft is inserted into the stack of laminations. Because of this yielding process, the amount of force required to insert the shaft is reduced, and a tighter fit is achieved.

Hussey, John H. (St. Louis, MO); Rose, John Scott (Alton, IL); Meystrik, Jeffrey J. (Webster Groves, MO); White, Kent Lee (Maryland Heights, MO)

2001-01-23T23:59:59.000Z

8

Single Rotor Turbine  

DOE Patents [OSTI]

A rotor for use in turbine applications has a centrifugal compressor having axially disposed spaced apart fins forming passages and an axial turbine having hollow turbine blades interleaved with the fins and through which fluid from the centrifugal compressor flows.

Platts, David A. (Los Alamos, NM)

2004-10-26T23:59:59.000Z

9

Using a collision model to design safer wind turbine rotors for birds  

SciTech Connect (OSTI)

A mathematical model for collisions between birds and propeller-type turbine rotors identifies the variables that can be manipulated to reduce the probability that birds will collide with the rotor. This study defines a safety index--the clearance power density--that allows rotors of different sizes and designs to be compared in terms of the amount of wind energy converted to electrical energy per bird collision. The collision model accounts for variations in wind speed during the year and shows that for model rotors with simple, one-dimensional blades, the safety index increases in proportion to rotor diameter, and variable speed rotors have higher safety indexes than constant speed rotors. The safety index can also be increased by enlarging the region near the center of the rotor hub where the blades move slowly enough for birds to avoid them. Painting the blades to make them more visible might have this effect. Model rotors with practical designs can have safety indexes an order of magnitude higher than those for model rotors typical of the constant speeds rotors in common use today. This finding suggests that redesigned rotors could have collision rates with birds perhaps an order of magnitude lower than today`s rotors, with no reduction in the production of wind power. The empirical data that exist for collisions between raptors, such as hawks and eagles, and rotors are consistent with the model: the numbers of raptor carcasses found beneath large variable speed rotors, relative to the numbers found under small constant speed rotors, are in the proportions predicted by the collision model rather than in proportion to the areas swept by the rotor blades. However, uncontrolled variables associated with these data prevent a stronger claim of support for the model.

Tucker, V.A. [Duke Univ., Durham, NC (United States). Dept. of Zoology

1996-11-01T23:59:59.000Z

10

Methods and apparatus for reduction of asymmetric rotor loads in wind turbines  

DOE Patents [OSTI]

A method for reducing load and providing yaw alignment in a wind turbine includes measuring displacements or moments resulting from asymmetric loads on the wind turbine. These measured displacements or moments are used to determine a pitch for each rotor blade to reduce or counter asymmetric rotor loading and a favorable yaw orientation to reduce pitch activity. Yaw alignment of the wind turbine is adjusted in accordance with the favorable yaw orientation and the pitch of each rotor blade is adjusted in accordance with the determined pitch to reduce or counter asymmetric rotor loading.

Moroz, Emilian Mieczyslaw; Pierce, Kirk Gee

2006-10-10T23:59:59.000Z

11

Methods and apparatus for rotor load control in wind turbines  

DOE Patents [OSTI]

A wind turbine having a rotor, at least one rotor blade, and a plurality of generators, of which a first generator is configured to provide power to an electric grid and a second generator is configured to provide power to the wind turbine during times of grid loss. The wind turbine is configured to utilize power provided by the second generator to reduce loads on the wind turbine during times of grid loss.

Moroz, Emilian Mieczyslaw

2006-08-22T23:59:59.000Z

12

Single rotor turbine engine  

DOE Patents [OSTI]

There has been invented a turbine engine with a single rotor which cools the engine, functions as a radial compressor, pushes air through the engine to the ignition point, and acts as an axial turbine for powering the compressor. The invention engine is designed to use a simple scheme of conventional passage shapes to provide both a radial and axial flow pattern through the single rotor, thereby allowing the radial intake air flow to cool the turbine blades and turbine exhaust gases in an axial flow to be used for energy transfer. In an alternative embodiment, an electric generator is incorporated in the engine to specifically adapt the invention for power generation. Magnets are embedded in the exhaust face of the single rotor proximate to a ring of stationary magnetic cores with windings to provide for the generation of electricity. In this alternative embodiment, the turbine is a radial inflow turbine rather than an axial turbine as used in the first embodiment. Radial inflow passages of conventional design are interleaved with radial compressor passages to allow the intake air to cool the turbine blades.

Platts, David A. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

13

Reduced  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared at 278, 298,NIST 800-53 RevisionDivisionReduced intermittency in

14

Homopolar motor with dual rotors  

DOE Patents [OSTI]

A homopolar motor has a field rotor mounted on a frame for rotation in a first rotational direction and for producing an electromagnetic field, and an armature rotor mounted for rotation on said frame within said electromagnetic field and in a second rotational direction counter to said first rotational direction of said field rotor. The two rotors are coupled through a 1:1 gearing mechanism, so as to travel at the same speed but in opposite directions. This doubles the output voltage and output power, as compared to a motor in which only the armature is rotated. Several embodiments are disclosed. 7 figs.

Hsu, J.S.

1998-12-01T23:59:59.000Z

15

Sandia National Laboratories: National Rotor Testbed Functional...  

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

of the National Rotor Testbed: An Aeroelastically Relevant Research-Scale Wind Turbine Rotor." Approximately 60 researchers from various institutions and countries attended...

16

Electrofriction method of manufacturing squirrel cage rotors  

DOE Patents [OSTI]

A method of making a squirrel cage rotor of copper material for use in AC or DC motors, includes forming a core with longitudinal slots, inserting bars of conductive material in the slots, with ends extending out of opposite ends of the core, and joining the end rings to the bars, wherein the conductive material of either the end rings or the bars is copper. Various methods of joining the end rings to the bars are disclosed including electrofriction welding, current pulse welding and brazing, transient liquid phase joining and casting. Pressure is also applied to the end rings to improve contact and reduce areas of small or uneven contact between the bar ends and the end rings. Rotors made with such methods are also disclosed.

Hsu, John S.

2005-04-12T23:59:59.000Z

17

CFD analysis of rotating two-bladed flatback wind turbine rotor.  

SciTech Connect (OSTI)

The effects of modifying the inboard portion of the NREL Phase VI rotor using a thickened, flatback version of the S809 design airfoil are studied using a three-dimensional Reynolds-averaged Navier-Stokes method. A motivation for using such a thicker airfoil design coupled with a blunt trailing edge is to alleviate structural constraints while reducing blade weight and maintaining the power performance of the rotor. The calculated results for the baseline Phase VI rotor are benchmarked against wind tunnel results obtained at 10, 7, and 5 meters per second. The calculated results for the modified rotor are compared against those of the baseline rotor. The results of this study demonstrate that a thick, flatback blade profile is viable as a bridge to connect structural requirements with aerodynamic performance in designing future wind turbine rotors.

van Dam, C.P. (University of California, David, CA); Chao, David D.; Berg, Dale E. (University of California, David, CA)

2008-04-01T23:59:59.000Z

18

Wind turbine rotor aileron  

DOE Patents [OSTI]

A wind turbine has a rotor with at least one blade which has an aileron which is adjusted by an actuator. A hinge has two portions, one for mounting a stationary hinge arm to the blade, the other for coupling to the aileron actuator. Several types of hinges can be used, along with different actuators. The aileron is designed so that it has a constant chord with a number of identical sub-assemblies. The leading edge of the aileron has at least one curved portion so that the aileron does not vent over a certain range of angles, but vents if the position is outside the range. A cyclic actuator can be mounted to the aileron to adjust the position periodically. Generally, the aileron will be adjusted over a range related to the rotational position of the blade. A method for operating the cyclic assembly is also described.

Coleman, Clint (Warren, VT); Kurth, William T. (Warren, VT)

1994-06-14T23:59:59.000Z

19

Measurements of imbalance response for a rigid rotor fully supported on squeeze film dampers  

E-Print Network [OSTI]

speeds. Adding damping to a rotor-bearing system reduces vibration amplitudes and provides isolation from the support structure. Squeeze film dampers (SFD), if properly employed, have been shown to effectively provide viscous damping and attenuate...

Lubell, Daniel Roger

2000-01-01T23:59:59.000Z

20

Probabilistic analysis of meanline compressor rotor performance  

E-Print Network [OSTI]

This thesis addresses variability in aerodynamic performance of a compressor rotor due to geometric variation. The performance of the rotor is computed using a meanline model that includes the effect of tip clearance ...

Fitzgerald, Nathan Andrew, 1980-

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Wind energy, with an annual growth of about 30%, represents one of the fastest growing renewable energy sources. Continuous long-term monitoring of wind turbines can greatly reduce maintenance  

E-Print Network [OSTI]

renewable energy sources. Continuous long-term monitoring of wind turbines can greatly reduce maintenance the profitability of wind turbines. A decentralized wind turbine monitoring system has been developed and installed on a 500 kW wind turbine in Germany. During its operation, temporary malfunctions of the installed sensing

Stanford University

22

Turbomachine rotor with improved cooling  

DOE Patents [OSTI]

A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn.

Hultgren, Kent Goran (Winter Park, FL); McLaurin, Leroy Dixon (Winter Springs, FL); Bertsch, Oran Leroy (Titusville, FL); Lowe, Perry Eugene (Oviedo, FL)

1998-01-01T23:59:59.000Z

23

Turbomachine rotor with improved cooling  

DOE Patents [OSTI]

A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn. 5 figs.

Hultgren, K.G.; McLaurin, L.D.; Bertsch, O.L.; Lowe, P.E.

1998-05-26T23:59:59.000Z

24

Rotor Blades and Ground Effect Richard Purvis  

E-Print Network [OSTI]

Rotor Blades and Ground Effect Richard Purvis Department of Mathematics University College London to examine various aspects of rotor blade flows and ground effect. It explores two- and three- dimensional flows, generally concentrating upon regimes that have a degree of rel- evance to typical rotor blade

Purvis, Richard

25

Hi-Q Rotor - Low Wind Speed Technology  

SciTech Connect (OSTI)

The project objective was to optimize the performance of the Hi-Q Rotor. Early research funded by the California Energy Commission indicated the design might be advantageous over state-of-the-art turbines for collecting wind energy in low wind conditions. The Hi-Q Rotor is a new kind of rotor targeted for harvesting wind in Class 2, 3, and 4 sites, and has application in areas that are closer to cities, or 'load centers.' An advantage of the Hi-Q Rotor is that the rotor has non-conventional blade tips, producing less turbulence, and is quieter than standard wind turbine blades which is critical to the low-wind populated urban sites. Unlike state-of-the-art propeller type blades, the Hi-Q Rotor has six blades connected by end caps. In this phase of the research funded by DOE's Inventions and Innovation Program, the goal was to improve the current design by building a series of theoretical and numeric models, and composite prototypes to determine a best of class device. Development of the rotor was performed by aeronautical engineering and design firm, DARcorporation. From this investigation, an optimized design was determined and an 8-foot diameter, full-scale rotor was built and mounted using a Bergey LX-1 generator and furling system which were adapted to support the rotor. The Hi-Q Rotor was then tested side-by-side against the state-of-the-art Bergey XL-1 at the Alternative Energy Institute's Wind Test Center at West Texas State University for six weeks, and real time measurements of power generated were collected and compared. Early wind tunnel testing showed that the cut-in-speed of the Hi-Q rotor is much lower than a conventional tested HAWT enabling the Hi-Q Wind Turbine to begin collecting energy before a conventional HAWT has started spinning. Also, torque at low wind speeds for the Hi-Q Wind Turbine is higher than the tested conventional HAWT and enabled the wind turbine to generate power at lower wind speeds. Based on the data collected, the results of our first full-scale prototype wind turbine proved that higher energy can be captured at lower wind speeds with the new Hi-Q Rotor. The Hi-Q Rotor is almost 15% more productive than the Bergey from 6 m/s to 8 m/s, making it ideal in Class 3, 4, and 5 wind sites and has application in the critical and heretofore untapped areas that are closer to cities, 'load centers,' and may even be used directly in urban areas. The additional advantage of the Hi-Q Rotor's non-conventional blade tips, which eliminates most air turbulence, is noise reduction which makes it doubly ideal for populated urban areas. Hi-Q Products recommends one final stage of development to take the Hi-Q Rotor through Technology Readiness Levels 8-9. During this stage of development, the rotor will be redesigned to further increase efficiency, match the rotor to a more suitable generator, and lower the cost of manufacturing by redesigning the structure to allow for production in larger quantities at lower cost. Before taking the rotor to market and commercialization, it is necessary to further optimize the performance by finding a better generator and autofurling system, ones more suitable for lower wind speeds and rpms should be used in all future testing. The potential impact of this fully developed technology will be the expansion and proliferation of energy renewal into the heretofore untapped Class 2, 3, 4, and 5 Wind Sites, or the large underutilized sites where the wind speed is broken by physical features such as mountains, buildings, and trees. Market estimates by 2011, if low wind speed technology can be developed are well above: 13 million homes, 675,000 commercial buildings, 250,000 public facilities. Estimated commercial exploitation of the Hi-Q Rotor show potential increase in U.S. energy gained through the clean, renewable wind energy found in low and very low wind speed sites. This new energy source would greatly impact greenhouse emissions as well as the public sector's growing energy demands.

Todd E. Mills; Judy Tatum

2010-01-11T23:59:59.000Z

26

Tip cap for a turbine rotor blade  

DOE Patents [OSTI]

A turbine rotor blade with a spar and shell construction, and a tip cap that includes a row of lugs extending from a bottom side that form dovetail grooves that engage with similar shaped lugs and grooves on a tip end of the spar to secure the tip cap to the spar against radial displacement. The lug on the trailing edge end of the tip cap is aligned perpendicular to a chordwise line of the blade in the trailing edge region in order to minimize stress due to the lugs wanting to bend under high centrifugal loads. A two piece tip cap with lugs at different angles will reduce the bending stress even more.

Kimmel, Keith D

2014-03-25T23:59:59.000Z

27

Rotor blades for turbine engines  

DOE Patents [OSTI]

A tip shroud that includes a plurality of damping fins, each damping fin including a substantially non-radially-aligned surface that is configured to make contact with a tip shroud of a neighboring rotor blade. At least one damping fin may include a leading edge damping fin and at least one damping fin may include a trailing edge damping fin. The leading edge damping fin may be configured to correspond to the trailing edge damping fin.

Piersall, Matthew R; Potter, Brian D

2013-02-12T23:59:59.000Z

28

Method for manufacturing a rotor having superconducting coils  

DOE Patents [OSTI]

A method and apparatus for manufacturing a rotor for use with a rotating machine is provided that employs a superconducting coil on the rotor. An adhesive is applied to an outer surface of the rotor body, which may include a groove disposed within an outer surface of the rotor body. A superconducting coil is then mounted onto the rotor body such that the adhesive bonds the superconducting coil to the rotor body.

Driscoll, David I. (South Euclid, OH); Shoykhet, Boris A. (Beachwood, OH)

2001-01-01T23:59:59.000Z

29

SMART Wind Turbine Rotor: Design and Field Test | Department...  

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

Design and Field Test SMART Wind Turbine Rotor: Design and Field Test This report documents the design, fabrication, and testing of the SMART Wind Turbine Rotor. This work...

30

Multiple piece turbine rotor blade  

DOE Patents [OSTI]

A multiple piece turbine rotor blade with a shell having an airfoil shape and secured between a spar and a platform with the spar including a tip end piece. a snap ring fits around the spar and abuts against the spar tip end piece on a top side and abuts against a shell on the bottom side so that the centrifugal loads from the shell is passed through the snap ring and into the spar and not through a tip cap dovetail slot and projection structure.

Jones, Russell B; Fedock, John A

2013-05-21T23:59:59.000Z

31

Optimum balancing for flexible rotor  

E-Print Network [OSTI]

for the donation of vibration pick-ups and the loan of precious equipment. A special appreciation is extended to my friend, Miss Mei Ou-Yang, for her assistance, encouragement and unselfish support during the preparation and completion of this project. Last... Balancing Fig. 9 Typical Phase Lag Between Force and Vibration Amplitude Chart 14 20 Fig. 10 Typical Principal Modes for a Symmetric and Uniform Shaft 21 Fig. ll Test Rig Setup Fig. 12 Typical Rotor, Probe and Probe Stand Fig. 13 Critical Speed VS...

Fu, Her James

1975-01-01T23:59:59.000Z

32

Sweep-twist adaptive rotor blade : final project report.  

SciTech Connect (OSTI)

Knight & Carver was contracted by Sandia National Laboratories to develop a Sweep Twist Adaptive Rotor (STAR) blade that reduced operating loads, thereby allowing a larger, more productive rotor. The blade design used outer blade sweep to create twist coupling without angled fiber. Knight & Carver successfully designed, fabricated, tested and evaluated STAR prototype blades. Through laboratory and field tests, Knight & Carver showed the STAR blade met the engineering design criteria and economic goals for the program. A STAR prototype was successfully tested in Tehachapi during 2008 and a large data set was collected to support engineering and commercial development of the technology. This report documents the methodology used to develop the STAR blade design and reviews the approach used for laboratory and field testing. The effort demonstrated that STAR technology can provide significantly greater energy capture without higher operating loads on the turbine.

Ashwill, Thomas D.

2010-02-01T23:59:59.000Z

33

Radial-radial single rotor turbine  

DOE Patents [OSTI]

A rotor for use in turbine applications has a radial compressor/pump having radially disposed spaced apart fins forming passages and a radial turbine having hollow turbine blades interleaved with the fins and through which fluid from the radial compressor/pump flows. The rotor can, in some applications, be used to produce electrical power.

Platts, David A. (Los Alamos, NM)

2006-05-16T23:59:59.000Z

34

Active Flow Control on Bidirectional Rotors for Tidal MHK Applications  

SciTech Connect (OSTI)

A marine and hydrokinetic (MHK) tidal turbine extracts energy from tidal currents, providing clean, sustainable electricity generation. In general, all MHK conversion technologies are confronted with significant operational hurdles, resulting in both increased capital and operations and maintenance (O&M) costs. To counter these high costs while maintaining reliability, MHK turbine designs can be simplified. Prior study found that a tidal turbine could be cost-effectively simplified by removing blade pitch and rotor/nacelle yaw. Its rotor would run in one direction during ebb and then reverse direction when the current switched to flood. We dubbed such a turbine a bidirectional rotor tidal turbine (BRTT). The bidirectional hydrofoils of a BRTT are less efficient than conventional hydrofoils and capture less energy, but the elimination of the pitch and yaw systems were estimated to reduce levelized cost of energy by 7.8%-9.6%. In this study, we investigated two mechanisms for recapturing some of the performance shortfall of the BRTT. First, we developed a novel set of hydrofoils, designated the yy series, for BRTT application. Second, we investigated the use of active flow control via microtabs. Microtabs are small deployable/retractable tabs, typically located near the leading or trailing edge of an air/hydrofoil with height on the order of the boundary layer thickness (1% - 2% of chord). They deploy approximately perpendicularly to the foil surface and, like gurney flaps and plain flaps, globally affect the aerodynamics of the airfoil. By strategically placing microtabs and selectively deploying them based on the direction of the inflow, performance of a BRTT rotor can be improved while retaining bidirectional operation. The yy foils were computationally designed and analyzed. They exhibited better performance than the baseline bidirectional foil, the ellipse. For example, the yyb07cn-180 had 14.7% higher (l/d)max than an ellipse of equal thickness. The yyb07cn family also had higher c{sub p,min} than equivalently thick ellipses, indicating less susceptibility to cavitation. Microtabs applied on yy foils demonstrated improved energy capture. A series of variable speed and constant speed rotors were developed with the yyb07cn family of hydrofoils. The constant speed yyb07cn rotor (yy-B02-Rcs,opt) captured 0.45% more energy than the equivalent rotor with ellipses (e-B02-Rcs,opt). With microtabs deployed (yy?t-B02-Rcs,opt), the energy capture increase over the rotor with ellipses was 1.05%. Note, however, that microtabs must be applied judiciously to bidirectional foils. On the 18% thick ellipse, performance decreased with the addition of microtabs. Details of hydrofoil performance, microtab sizing and positioning, rotor configurations, and revenue impacts are presented herein.

Shiu, Henry [Research Engineer; van Dam, Cornelis P. [Professor

2013-08-22T23:59:59.000Z

35

Acoustic modulation effect of rotating stator/rotor interaction noise  

E-Print Network [OSTI]

order, B(k) is the number of rotor blades, (k) is the angular velocity of the rotor, (l) is the angular on the rotor blades and on the fixed parts. According to the Ffowcs-Williams and Hawk- ings analogy comes from the periodic forces on the rotor blades and the forces on the other static parts of the fan

Boyer, Edmond

36

Safety Warnings Quad Rotors (Quad-Pilot 2 F.3)  

E-Print Network [OSTI]

Safety Warnings Quad Rotors (Quad-Pilot 2 F.3) The quad rotor "quad-pilot 2 F.3" is a complicated accidents from taking place. Operation of the quad rotor should be performed in a safe and responsible not accept any liability for damage and consequent damage arising from the use of the quad rotors, as we have

Langendoen, Koen

37

Interlayer toughening of fiber composite flywheel rotors  

DOE Patents [OSTI]

An interlayer toughening mechanism to mitigate the growth of damage in fiber composite flywheel rotors for long application. The interlayer toughening mechanism may comprise one or more tough layers composed of high-elongation fibers, high-strength fibers arranged in a woven pattern at a range from 0.degree. to 90.degree. to the rotor axis and bound by a ductile matrix material which adheres to and is compatible with the materials used for the bulk of the rotor. The number and spacing of the tough interlayers is a function of the design requirements and expected lifetime of the rotor. The mechanism has particular application in uninterruptable power supplies, electrical power grid reservoirs, and compulsators for electric guns, as well as electromechanical batteries for vehicles.

Groves, Scott E. (Brentwood, CA); Deteresa, Steven J. (Livermore, CA)

1998-01-01T23:59:59.000Z

38

Interlayer toughening of fiber composite flywheel rotors  

DOE Patents [OSTI]

An interlayer toughening mechanism is described to mitigate the growth of damage in fiber composite flywheel rotors for long application. The interlayer toughening mechanism may comprise one or more tough layers composed of high-elongation fibers, high-strength fibers arranged in a woven pattern at a range from 0{degree} to 90{degree} to the rotor axis and bound by a ductile matrix material which adheres to and is compatible with the materials used for the bulk of the rotor. The number and spacing of the tough interlayers is a function of the design requirements and expected lifetime of the rotor. The mechanism has particular application in uninterruptable power supplies, electrical power grid reservoirs, and compulsators for electric guns, as well as electromechanical batteries for vehicles. 2 figs.

Groves, S.E.; Deteresa, S.J.

1998-07-14T23:59:59.000Z

39

Wind turbine rotor hub and teeter joint  

DOE Patents [OSTI]

A rotor hub is provided for coupling a wind turbine rotor blade and a shaft. The hub has a yoke with a body which is connected to the shaft, and extension portions which are connected to teeter bearing blocks, each of which has an aperture. The blocks are connected to a saddle which envelops the rotor blade by one or two shafts which pass through the apertures in the bearing blocks. The saddle and blade are separated by a rubber interface which provides for distribution of stress over a larger portion of the blade. Two teeter control mechanisms, which may include hydraulic pistons and springs, are connected to the rotor blade and to the yoke at extension portions. These control mechanisms provide end-of-stroke damping, braking, and stiffness based on the teeter angle and speed of the blade.

Coleman, Clint (Warren, VT); Kurth, William T. (Warren, VT); Jankowski, Joseph (Stowe, VT)

1994-10-11T23:59:59.000Z

40

A carbon nanotube bearing and Stodola rotor  

E-Print Network [OSTI]

A nano-scale rotor supported on a cantilevered multi-wall carbon nanotube (MWNT) shaft (Stodola configuration) is proposed. The nanotube is also expected to function as the bearing, since individual walls of a MWNT are not ...

Cook, Eugene Hightower

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Turbine bearings and rotor dynamics workshop: proceedings  

SciTech Connect (OSTI)

An EPRI workshop to address turbine bearing reliability improvement and rotor dynamics was co-hosted by Detroit Edison in Dearborn, Michigan on September 8-10, 1982. The 136 attendees represented a broad spectrum of US utilities, equipment manufacturers, and consultants, as well as representatives from England, Japan, and Switzerland. These proceedings contain the text of the formal presentations as well as summaries of the working group sessions which were devoted to topics of particular interest to the workshop participants. Formal presentations were organized under the following general session titles: utility experience and advancements in turbine bearing and lubrication systems; recent advancements in turbine bearing and lubrication systems; utility experience and advancements in turbine-generator rotor dynamics; and recent advancements in turbine-generator rotor dynamics. In addition to the technical presentations, working group sessions were held on selected topics relevant to turbine bearing reliability improvement and rotor dynamics. These groups provided a forum for engineers to exchange ideas and information in a less formal environment. The discussions provided attendees with an opportunity to discuss key issues in more detail and address subjects not covered in the formal presentations. The subjects of these working groups were: rotor dynamic analysis and problem solving; vibration signature analysis and field balancing; oil contamination monitoring and control; and operation and maintenance practices. Individual papers have been entered individually into EDB and ERA.

Brown, R.G.; Quilliam, J.F. (eds.)

1985-06-01T23:59:59.000Z

42

Complete Fuel Combustion for Diesel Engines Resulting in Greatly...  

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

Complete Fuel Combustion for Diesel Engines Resulting in Greatly Reduced Emissions and Improved Fuel Efficiency Complete Fuel Combustion for Diesel Engines Resulting in Greatly...

43

active elevon rotor: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

44

active twist rotor: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

45

advanced turbocharger rotor: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

46

active flap rotor: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

47

advanced rotor systems: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

48

adiabatic rotor model: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

49

asymmetric rotor model: Topics by E-print Network  

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

(UGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords:...

50

The cost of noise reduction in commercial tilt rotor aircraft  

E-Print Network [OSTI]

The relationship between direct operating cost and departure noise annoyance was developed for commercial tilt rotor aircraft. This was accomplished by generating a series of tilt rotor aircraft designs to meet various ...

Faulkner, Henry B.

1974-01-01T23:59:59.000Z

51

Accelerator dynamics of a fractional kicked rotor  

E-Print Network [OSTI]

It is shown that the Weyl fractional derivative can quantize an open system. A fractional kicked rotor is studied in the framework of the fractional Schrodinger equation. The system is described by the non-Hermitian Hamiltonian by virtue of the Weyl fractional derivative. Violation of space symmetry leads to acceleration of the orbital momentum. Quantum localization saturates this acceleration, such that the average value of the orbital momentum can be a direct current and the system behaves like a ratchet. The classical counterpart is a nonlinear kicked rotor with absorbing boundary conditions.

A. Iomin

2006-09-14T23:59:59.000Z

52

Variable diameter wind turbine rotor blades  

DOE Patents [OSTI]

A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can have more than one extension in a variety of configurations. A cable winching system, a hydraulic system, a pneumatic system, inflatable or elastic extensions, and a spring-loaded jack knife deployment are some of the methods of adjustment. The extension is also protected from lightning by a grounding system.

Jamieson, Peter McKeich; Hornzee-Jones, Chris; Moroz, Emilian M.; Blakemore, Ralph W.

2005-12-06T23:59:59.000Z

53

Ultra-Micro Wave Rotor Investigations Florin Iancu, Janusz Piechna*  

E-Print Network [OSTI]

Nowowiejska Str., 00-665 Warsaw, Poland Abstract Ultra Micro Gas Turbines (UµGT) are expected to be a next of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors, topping gas turbines at about 70%. Keywords: PowerMEMS, wave rotor, ultra micro gas turbine, pressure exchanger, efficiency 1

Müller, Norbert

54

Texas Fluid Dynamics Meeting, 2013 STABILITY OF ROTOR WAKES.  

E-Print Network [OSTI]

et al.(2000) [1] did eigenvalue stability analysis on multi-bladed helicopter rotor wakes and found, of multi-bladed helicopter rotor wake. Despite various analytical, numerical and flow visualiza- tion-scale four- bladed helicopter rotor in hover [6,7], revealed some impor- tant observations. Investigations

Tinney, Charles E.

55

Modeling of a rotor speed transient response with radial rubbing  

E-Print Network [OSTI]

by an accidental blade­off imbalance. In order to assess the angular deceleration of the rotor due to rubbingModeling of a rotor speed transient response with radial rubbing Sébastien Roques1 Institut deGill Univer- sity, 817 Sherbrooke St West, Montreal, Quebec H3A 2K6, Canada Abstract A rotor­stator model

Boyer, Edmond

56

On the Classification of Universal Rotor-Routers  

E-Print Network [OSTI]

The combinatorial theory of rotor-routers has connections with problems of statistical mechanics, graph theory, chaos theory, and computer science. A rotor-router network defines a deterministic walk on a digraph G in which a particle walks from a source vertex until it reaches one of several target vertices. Motivated by recent results due to Giacaglia et al., we study rotor-router networks in which all non-target vertices have the same type. A rotor type r is universal if every hitting sequence can be achieved by a homogeneous rotor-router network consisting entirely of rotors of type r. We give a conjecture that completely classifies universal rotor types. Then, this problem is simplified by a theorem we call the Reduction Theorem that allows us to consider only two-state rotors. A rotor-router network called the compressor, because it tends to shorten rotor periods, is introduced along with an associated algorithm that determines the universality of almost all rotors. New rotor classes, including boppy ro...

He, Xiaoyu

2011-01-01T23:59:59.000Z

57

Dynamics and Fatigue Damage of Wind Turbine Rotors  

E-Print Network [OSTI]

6 3 RiS0-Rr512 Dynamics and Fatigue Damage of Wind Turbine Rotors during Steady Operation Peter OF WIND TURBINE ROTORS DURING STEADY OPERATION Peter Hauge Madsen, Sten Frandsen, William E. Holley-carrying capacity of a wind turbine rotor with respect to short-term strength and material fatigue are presented

58

INTRODUCTION 1.1 Aerodynamics of Rotors in Forward Flight  

E-Print Network [OSTI]

1 CHAPTER I INTRODUCTION 1.1 Aerodynamics of Rotors in Forward Flight The prediction of rotor blade aerodynamic loads, especially in forward flight, requires accurate and efficient modeling of several distinct to the nonlinear interaction between the rotor aerodynamics, trim, aeroelasticity and blade dynamics. As stated

59

Rotor bore and turbine rotor wheel/spacer heat exchange flow circuit  

DOE Patents [OSTI]

In a turbine having closed-circuit steam-cooling passages about the rim of the rotor during steady-state operation, compressor discharge air is supplied to the rotor bore for passage radially outwardly into the wheel space cavities between the wheels and spacers. Communicating slots and channels in the spacers and wheels at circumferentially spaced positions enable egress of the compressor discharge air into the hot gas flow path. At turbine startup, cooling air flows through the closed-circuit steam passages to cool the outer rim of the rotor while compressor discharge air pre-warms the wheels and spacers. At steady-state, cooling steam is supplied in the closed-circuit steam-cooling passages and compressor discharge air is supplied through the bore and into the wheel space cavities to cool the rotor.

Caruso, Philip M. (Selkirk, NY); Eldrid, Sacheverel Quentin (Saratoga Springs, NY); Ladhani, Azad A. (Niskayuna, NY); DeMania, Alan Richard (Niskayuna, NY); Palmer, Gene David (Clifton Park, NY); Wilson, Ian David (Clifton Park, NY); Rathbun, Lisa Shirley (Scotia, NY); Akin, Robert Craig (Schenectady, NY)

2002-01-01T23:59:59.000Z

60

Voith High Efficiency HM Rotor Energy Data, A Repulper Rotor Design Case Study  

E-Print Network [OSTI]

A recently completed demonstration project, funded partly by the Wisconsin Focus on Energy program and Wisconsin Public Service Corporation, shows the effectiveness of an energy efficient repulper rotor design compared with that of a conventional...

Aue, J.; Fineran, B.

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Utilization of rotor kinetic energy storage for hybrid vehicles  

DOE Patents [OSTI]

A power system for a motor vehicle having an internal combustion engine, the power system comprises an electric machine (12) further comprising a first excitation source (47), a permanent magnet rotor (28) and a magnetic coupling rotor (26) spaced from the permanent magnet rotor and at least one second excitation source (43), the magnetic coupling rotor (26) also including a flywheel having an inertial mass to store kinetic energy during an initial acceleration to an operating speed; and wherein the first excitation source is electrically connected to the second excitation source for power cycling such that the flywheel rotor (26) exerts torque on the permanent magnet rotor (28) to assist braking and acceleration of the permanent magnet rotor (28) and consequently, the vehicle. An axial gap machine and a radial gap machine are disclosed and methods of the invention are also disclosed.

Hsu, John S. (Oak Ridge, TN)

2011-05-03T23:59:59.000Z

62

Dynamical Localization in Kicked Quantum Rotors  

E-Print Network [OSTI]

The periodically $\\delta$-kicked quantum linear rotor is known to experience non-classical bounded energy growth due to quantum dynamical localization in angular momentum space. We study the effect of random deviations of the kick period in simulations and experiments. This breaks the energy and angular momentum localization and increases the rotational alignment, which is the analog of the onset of Anderson localization in 1-D chains.

Kamalov, Andrei; Bucksbaum, Philip H

2015-01-01T23:59:59.000Z

63

Double-ended ceramic helical-rotor expander  

DOE Patents [OSTI]

A ceramic helical rotor expander is disclosed using a double-ended or tandem herringbone type rotor arrangement with bearing and seal assemblies remote from the hot gas inlets and especially capable of operating at an inlet temperature of above 1,100 C. The rotors are solid or hollow and bonded to hollow metal shafts, and mounted in a composite or simple prismatic casing. The rotors, casing and shafts are constructed from low expansivity materials. In the preferred embodiment the rotors are constructed of silicon nitride and the shafts constructed of an molybdenum alloy, with the metal shafts being supported in bearings and secured to synchronizing gears. The rotors and casing may be provided with coolant channels therein, and are constructed to eliminate the problem of end leakages at inlet temperature and pressure, and the need for high temperature bearings and seals. 3 figs.

Mohr, P.B.; Myers, W.B.

1995-02-28T23:59:59.000Z

64

Effect of Cooling Flow on the Operation of a Hot Rotor-Gas Foil Bearing System  

E-Print Network [OSTI]

.2 Drive end GFB: Predicted bearing static parameters ................................. 157 M.3 Free end GFB: Predicted bearing static parameters ................................... 158 1 CHAPTER I INTRODUCTION Micro gas turbine engines (<400... kW) are light-weight compact units operating at extreme temperatures and at high rotor speeds to achieve the desired power with reduced emissions [1]. Employing gas foil bearings (GFBs) in micro gas turbines increases system efficiency...

Ryu, Keun

2012-02-14T23:59:59.000Z

65

Disc rotors with permanent magnets for brushless dc motor  

SciTech Connect (OSTI)

This patent describes a brushless dc permanent magnet motor for driving an autonomous underwater vehicle. It comprises first and second substantially flat, generally cylindrical stators disposed in side by side relation; a first substantially flat, generally cylindrical rotor; a first shaft connected to the first rotor and a second, concentric shaft connected to the second rotor; and means for providing rotation of the first and second shafts in opposite directions.

Hawsey, R.A.; Bailery, J.M.

1992-05-26T23:59:59.000Z

66

Rotor for processing liquids using movable capillary tubes  

DOE Patents [OSTI]

A rotor assembly for processing liquids, especially whole blood samples, is disclosed. The assembly includes apparatus for separating non-liquid components of whole blood samples from liquid components, apparatus for diluting the separated liquid component with a diluent and apparatus for transferring the diluted sample to an external apparatus for analysis. The rotor assembly employs several movable capillary tubes to handle the sample and diluents. A method for using the rotor assembly to process liquids is also described. 5 figs.

Johnson, W.F.; Burtis, C.A.; Walker, W.A.

1987-07-17T23:59:59.000Z

67

Interface structure for hub and mass attachment in flywheel rotors  

DOE Patents [OSTI]

An interface structure for hub and mass attachment in flywheel rotors. The interface structure efficiently transmits high radial compression forces and withstands both large circumferential elongation and local stresses generated by mass-loading and hub attachments. The interface structure is comprised of high-strength fiber, such as glass and carbon, woven into an angle pattern which is about 45.degree. with respect to the rotor axis. The woven fiber is bonded by a ductile matrix material which is compatible with and adheres to the rotor material. This woven fiber is able to elongate in the circumferential direction to match the rotor growth during spinning.

Deteresa, Steven J. (Livermore, CA); Groves, Scott E. (Brentwood, CA)

1998-06-02T23:59:59.000Z

68

Interface structure for hub and mass attachment in flywheel rotors  

DOE Patents [OSTI]

An interface structure is described for hub and mass attachment in flywheel rotors. The interface structure efficiently transmits high radial compression forces and withstands both large circumferential elongation and local stresses generated by mass-loading and hub attachments. The interface structure is comprised of high-strength fiber, such as glass and carbon, woven into an angle pattern which is about 45{degree} with respect to the rotor axis. The woven fiber is bonded by a ductile matrix material which is compatible with and adheres to the rotor material. This woven fiber is able to elongate in the circumferential direction to match the rotor growth during spinning. 2 figs.

Deteresa, S.J.; Groves, S.E.

1998-06-02T23:59:59.000Z

69

Turning Waste Heat into Power: Ener-G-Rotors and the Entrepreneurial...  

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

Turning Waste Heat into Power: Ener-G-Rotors and the Entrepreneurial Mentorship Program Turning Waste Heat into Power: Ener-G-Rotors and the Entrepreneurial Mentorship Program...

70

E-Print Network 3.0 - aero-elasticity rotor aerodynamics Sample...  

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

Summary: HVDC 12;Rotor aero-elastics and structural dynamics 12;Aerodynamics for wind turbines Flow over... and components Rotor aero-elastics and structural dynamics Grid...

71

Chaos in a rotor system supported by ball bearings  

E-Print Network [OSTI]

to observing chaos in rotor systems. Further, there has been little work carried out in the area of chaos control, of which only a small portion has been applied to rotor systems. Originally, the goal of the research described in this paper was to control...

Fisher, James Robert, 1979-

2013-02-22T23:59:59.000Z

72

Main Rotor Swashplate Test Stand Design Model and System Overview  

E-Print Network [OSTI]

on the aircraft due to reaction forces generated by rotor blade lift which varies with rotor speed and blade angle of the modified stand: Rotating Components Drivetrain o Variable speed AC Motor o Double cardan input driveshaft, and more closely mimic the operational kinematics of a swashplate which is installed on an aircraft

Almor, Amit

73

Effects of increasing tip velocity on wind turbine rotor design.  

SciTech Connect (OSTI)

A reduction in cost of energy from wind is anticipated when maximum allowable tip velocity is allowed to increase. Rotor torque decreases as tip velocity increases and rotor size and power rating are held constant. Reduction in rotor torque yields a lighter weight gearbox, a decrease in the turbine cost, and an increase in the capacity for the turbine to deliver cost competitive electricity. The high speed rotor incurs costs attributable to rotor aero-acoustics and system loads. The increased loads of high speed rotors drive the sizing and cost of other components in the system. Rotor, drivetrain, and tower designs at 80 m/s maximum tip velocity and 100 m/s maximum tip velocity are created to quantify these effects. Component costs, annualized energy production, and cost of energy are computed for each design to quantify the change in overall cost of energy resulting from the increase in turbine tip velocity. High fidelity physics based models rather than cost and scaling models are used to perform the work. Results provide a quantitative assessment of anticipated costs and benefits for high speed rotors. Finally, important lessons regarding full system optimization of wind turbines are documented.

Resor, Brian Ray; Maniaci, David Charles; Berg, Jonathan Charles; Richards, Phillip William

2014-05-01T23:59:59.000Z

74

Disc rotors with permanent magnets for brushless DC motor  

SciTech Connect (OSTI)

A brushless dc permanent magnet motor drives an autonomous underwater vehe. In one embodiment, the motor comprises four substantially flat stators in stacked relationship, with pairs of the stators axially spaced, each of the stators comprising a tape-wound stator coil, and first and second substantially flat rotors disposed between the spaced pairs of stators. Each of the rotors includes an annular array of permanent magnets embedded therein. A first shaft is connected to the first rotor and a second, concentric shaft is connected to the second rotor, and a drive unit causes rotation of the two shafts in opposite directions. The second shaft comprises a hollow tube having a central bore in which the first shaft is disposed. Two different sets of bearings support the first and second shafts. In another embodiment, the motor comprises two ironless stators and pairs of rotors mounted on opposite sides of the stators and driven by counterrotating shafts.

Hawsey, Robert A. (Oak Ridge, TN); Bailey, J. Milton (Knoxville, TN)

1992-01-01T23:59:59.000Z

75

AIAA-982909 Characterization of the Near Wake of a Helicopter Rotor*  

E-Print Network [OSTI]

of Technology. Abstract Vortex characteristics in the near wake of a 2-bladed teetering rotor in steady forward to be repeatable to within 1° of rotor revolution. Velocity was measured in the planes intersected by the rotor-blade blade side of the rotor. The axial velocity in all cases is wake-like, being directed towards the blade

76

RESULTS AND DISCUSSION -Part I UH60A Rotor in High Speed Forward Flight  

E-Print Network [OSTI]

rotor for a number of hover and forward flight conditions. This rotor is a four-bladed configuration.2: Geometric Twist Distribution for the UH-60A Rotor In the experiment, the blades were trimmed to eliminate the one-per-rev flapping. The rotor blade sectional twist including elastic deformation is available

77

Reference Model 2: %22Rev 0%22 Rotor Design.  

SciTech Connect (OSTI)

The preliminary design for a three-bladed cross-flow rotor for a reference marine hydrokinetic turbine is presented. A rotor performance design code is described, along with modifications to the code to allow prediction of blade support strut drag as well as interference between two counter-rotating rotors. The rotor is designed to operate in a reference site corresponding to a riverine environment. Basic rotor performance and rigid-body loads calculations are performed to size the rotor elements and select the operating speed range. The preliminary design is verified with a simple finite element model that provides estimates of bending stresses during operation. A concept for joining the blades and support struts is developed and analyzed with a separate finite element analysis. Rotor mass, production costs, and annual energy capture are estimated in order to allow calculations of system cost-of-energy. Evaluation Only. Created with Aspose.Pdf.Kit. Copyright 2002-2011 Aspose Pty Ltd Evaluation Only. Created with Aspose.Pdf.Kit. Copyright 2002-2011 Aspose Pty Ltd

Barone, Matthew F.; Berg, Jonathan Charles; Griffith, Daniel

2011-12-01T23:59:59.000Z

78

Great Lakes RESTORATION  

E-Print Network [OSTI]

). Microcystis, the most common blue-green algae in the Great Lakes, produces the toxin Microcystin. This toxin runoff) into lake watersheds contributes to these blooms. While Lake Erie's Western Basin is best knownGreat Lakes RESTORATION NATIONALOCEAN IC AND ATMOSPHERIC ADMINISTRATION U.S. D EPARTMENT OF COMM E

79

Variable speed operation of generators with rotor-speed feedback in wind power applications  

SciTech Connect (OSTI)

The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy we analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. in extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

Muljadi, E.; Butterfield, C.P.; Migliore, P.

1995-11-01T23:59:59.000Z

80

Variable speed operation of generators with rotor-speed feedback in wind power applications  

SciTech Connect (OSTI)

The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable-speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable-speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy analyzed uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. In extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

Muljadi, E.; Butterfield, C.P.; Migliore, P. [National Renewable Energy Lab., Golden, CO (United States). Wind Technology Div.

1996-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Variable speed operation of generators with rotor-speed feedback in wind power applications  

SciTech Connect (OSTI)

The use of induction generators in wind power applications has been common since the early development of the wind industry. Most of these generators operate at fixed frequency and are connected directly to the utility grid. Unfortunately, this mode of operation limits the rotor speed to a specific rpm. Variable speed operation is preferred in order to facilitate maximum energy capture over a wide range of wind speeds. This paper explores variable speed operating strategies for wind turbine applications. The objectives are to maximize energy production, provide controlled start-up, and reduce torque loading. This paper focuses on optimizing the energy captured by operating at maximum aerodynamic efficiency at any wind speed. The control strategy the authors analyze uses rotor speed and generator power as the feedback signals. In the normal operating region, rotor speed is used to compute a target power that corresponds to optimum operation. With power as the control objective, the power converter and generator are controlled to track the target power at any rpm. Thus, the torque-speed characteristic of the generator is shaped to optimize the energy capture. The target power is continuously updated at any rpm. In extreme areas of the operating envelope, during start-up, shutdown, generator overload, or overspeed, different strategies driven by other system considerations must be used.

Muljadi, E.; Butterfield, C.P.; Migliore, P. [National Renewable Energy Lab., Golden, CO (United States)

1996-11-01T23:59:59.000Z

82

Control coil arrangement for a rotating machine rotor  

DOE Patents [OSTI]

A rotating machine (e.g., a turbine, motor or generator) is provided wherein a fixed solenoid or other coil configuration is disposed adjacent to one or both ends of the active portion of the machine rotor for producing an axially directed flux in the active portion so as to provide planar axial control at single or multiple locations for rotor balance, levitation, centering, torque and thrust action. Permanent magnets can be used to produce an axial bias magnetic field. The rotor can include magnetic disks disposed in opposed, facing relation to the coil configuration.

Shah, Manoj R. (Latham, NY); Lewandowsk, Chad R. (Amsterdam, NY)

2001-07-31T23:59:59.000Z

83

The 5-megawatt power plant with 126 metre rotor diameter  

E-Print Network [OSTI]

The 5-megawatt power plant with 126 metre rotor diameter #12;Design data Rated power 5,000kW Cut-in speed 3.5m/s Rated wind speed 13.0m/s Cut-out speed 25.0m/s onshore 30.0m/s offshore Wind zone up to DIBt 3 Type class up to IEC Ib / GL offshore type class I Rotor Diameter 126.0m Rotor area 12,469m2

Firestone, Jeremy

84

Synchronization and Collective Dynamics in a Carpet of Microfluidic Rotors  

E-Print Network [OSTI]

We study synchronization of an array of rotors on a substrate that are coupled by hydrodynamic interaction. The rotors that are modeled by an effective rigid body, are driven by an internal torque and exerts an active force on the surrounding fluid. The long-ranged nature of the hydrodynamic interaction between the rotors causes a rich pattern of dynamical behaviors including phase ordering and turbulent spiral waves. The model provides a novel example of coupled oscillators with long-range interaction. Our results suggest strategies for designing controllable microfluidic mixers using the emergent behavior of hydrodynamically coupled active components.

Nariya Uchida; Ramin Golestanian

2010-04-28T23:59:59.000Z

85

Reduced Rank Models for Contingency Tables  

E-Print Network [OSTI]

Solution problem 73-14, Rank factorization of nonnegativein Great Britain Reduced rank models for contingency tablesclass analysis; Reduced rank models. 1. INTRODUCTION In

Jan de Leeuw; Peter van der Heijden

2011-01-01T23:59:59.000Z

86

Lean implementation across value stream in main rotor blade area  

E-Print Network [OSTI]

The primary goal for this project was to help expand the existing capability of Sikorsky's main rotor blade business from raw material (titanium) through final assembly. The project helped to facilitate the ongoing lean ...

Phoenix, Casey J. (Casey John)

2007-01-01T23:59:59.000Z

87

Methods and apparatus for rotor blade ice detection  

DOE Patents [OSTI]

A method for detecting ice on a wind turbine having a rotor and one or more rotor blades each having blade roots includes monitoring meteorological conditions relating to icing conditions and monitoring one or more physical characteristics of the wind turbine in operation that vary in accordance with at least one of the mass of the one or more rotor blades or a mass imbalance between the rotor blades. The method also includes using the one or more monitored physical characteristics to determine whether a blade mass anomaly exists, determining whether the monitored meteorological conditions are consistent with blade icing; and signaling an icing-related blade mass anomaly when a blade mass anomaly is determined to exist and the monitored meteorological conditions are determined to be consistent with icing.

LeMieux, David Lawrence

2006-08-08T23:59:59.000Z

88

Obama Administration Hosts Great Lakes Offshore Wind Workshop...  

Office of Environmental Management (EM)

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

89

Structural testing of the North Wind 250 composite rotor joint  

SciTech Connect (OSTI)

The North Wind 250 wind turbine is under development at Northern Power Systems (NPS) in Moretown, VT. The turbine uses a unique, flow-through, teetered-rotor design. This design eliminates structural discontinuities at the blade/hub interface by fabricating the rotor as one continuous structural element. To accomplish this, the two blade spars are joined at the center of the rotor using a proprietary bonding technique. Fatigue tests were conducted on the full-scale rotor joint at the National Renewable Energy Laboratory (NREL). Subsequent tests are now underway to test the full-scale rotor and hub assembly to verify the design assumptions. The test articles were mounted in dedicated test fixtures. For the joint test, a constant moment was generated across the joint and parent material. Hydraulic actuators applied sinusoidal loading to the test article at levels equivalent to 90% of the extreme wind load for over one million cycles. When the loading was increased to 112% of the extreme wind load, the joint failed by buckling. Strain levels were monitored at 14 locations inside and outside of the blade joint during the test. The tests were used to qualify this critical element of the rotor for field testing and to provide information needed to improve the structural design of the joint.

Musial, W; Link, H [National Renewable Energy Lab., Golden, CO (United States); Coleman, C [Northern Power Systems, Moretown, VT (United States)

1994-05-01T23:59:59.000Z

90

Rigid-rotor, field-reversed configuration  

SciTech Connect (OSTI)

The radial profiles, n(r), B{sub z}(r), and E{sub r}(r), for a Flux-Coil (inductively driven), Field-Reversed Configuration (FC-FRC) are measured and compared to the predictions of the Rigid-Rotor Model (RRM), which is an analytic, one-dimensional, time-independent, equilibrium description for the FRC. Injectors mounted on both ends of the confinement vessel provide a pre-fill plasma. Coaxial coils mounted outside the vacuum boundaries of the annular-confinement vessel accelerate the plasma and produce the FRC. The density profile is measured by laser interferometry, the magnetic-field profile using an in-situ probe array, and the electric-field profile using an in-situ, floating-probe array. Free parameters for each profile are measured, which also allow other intrinsic-plasma parameters to be determined, using computer-fit algorithms: null radius, radial thickness, plasma temperature, rotation frequencies, the latter of which are independently verified by spectroscopy. All radial profiles agree with the RRM predictions, for the experimental configuration, parameter regime, and specified-time interval studied here.

Conti, F., E-mail: conti@df.unipi.it; Giammanco, F. [Physics Department E. Fermi, University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa (Italy) [Physics Department E. Fermi, University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa (Italy); Plasma Diagnostics and Technologies Ltd., Via Giuntini 63, 56023 Navacchio (PI) (Italy); Wessel, F. J.; Binderbauer, M. W.; Bolte, N.; Morehouse, M.; Qerushi, A.; Rahman, H. U.; Roche, T.; Slepchenkov, M. [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States)] [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States)

2014-02-15T23:59:59.000Z

91

Great Wall Starbucks  

E-Print Network [OSTI]

along the Great Wall. When you think about it, it's not a bad marketing strategy: the Wall is high, the stairs relentless; what better than an espresso to energize you for the steep climb up? On second thought, make that a double. #ceas #china #tsutsui...

Hacker, Randi; Gatewood, Tyler; Tsutsui, William

2006-03-29T23:59:59.000Z

92

A novel isolation curtain to reduce turbine ingress heating and an advanced model for honeycomb labyrinth seals  

E-Print Network [OSTI]

, but implementation of the injection curtain slot reduced substantially T* max of the outer region. In addition, a more desirable uniform adiabatic wall temperature distribution along the outer rotor and stator surfaces was observed due to the presence...

Choi, Dong Chun

2006-08-16T23:59:59.000Z

93

Method and apparatus for assembling permanent magnet rotors  

DOE Patents [OSTI]

A permanent magnet assembly for assembly in large permanent magnet motors and generators includes a two-piece carrier that can be slid into a slot in the rotor and then secured in place using a set screw. The invention also provides an auxiliary carrier device with guide rails that line up with the teeth of the rotor, so that a permanent magnet assembly can be pushed first into a slot, and then down the slot to its proper location. An auxiliary tool is provided to move the permanent magnet assembly into position in the slot before it is secured in place. Methods of assembling and disassembling the magnet assemblies in the rotor are also disclosed. 2 figs.

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

1999-06-22T23:59:59.000Z

94

Operating Modes of a Teeter-Rotor Wind Turbine  

SciTech Connect (OSTI)

We examine the operating modes of a two-bladed teetered wind turbine. Because of the gyroscopic asymmetry of its rotor, this turbine's dynamics can be quite distinct from those of a turbine with three or more blades. This asymmetry leads to system equations with periodic coefficients that are solved using the Floquet approach to extract the correct modal parameters. The system equations are derived using a simple analytical model with four degrees of freedom: cacelle yaw, rotor teeter, and flapping associated with each blade. Results confirm that the turbine modes become more dominated by the centrifugal and gyroscopic effects as the rotor speed increases. They gyroscopic effect may also cause dynamic instability. Under certain design conditions, yaw and teeter modal frequencies may coalesce.

Bir, G. S. (National Renewable Energy Laboratory); Stol, K. (University of Colorado at Boulder)

1999-02-25T23:59:59.000Z

95

Complete Fuel Combustion for Diesel Engines Resulting in Greatly Reduced  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth Codestheat TwoDepartment14, 2008

96

BASIC CONTROL FOR FOUR ROTOR AUTONOMOUS AERIAL AGENT JONATHAN MCLEAN, CONNECTICUT COLLEGE, USA,  

E-Print Network [OSTI]

more difficult to control, requiring minute adjustments to individual rotor blades, as well as tailBASIC CONTROL FOR FOUR ROTOR AUTONOMOUS AERIAL AGENT JONATHAN MCLEAN, CONNECTICUT COLLEGE, USA platform is required. Our four-rotor platform provides researchers with a inexpensive, fully scalable test

Parker, Gary B.

97

Computational Modeling of Rotor Blade Performance Degradation Due to Ice Accretion  

E-Print Network [OSTI]

PENNSTATE _ Computational Modeling of Rotor Blade Performance Degradation Due to Ice Accretion, 2013 9:00 a.m. 301 Steidle Building Ice accretion on helicopter rotor blades can cause significant. If unabated, rotor ice can accumulate to the point where the vehicle can no longer maintain flight

Maroncelli, Mark

98

FAULT DETECTION AND STATE EVALUATION OF ROTOR BLADES Yuri Petryna, Andreas Knzel, Matthias Kannenberg  

E-Print Network [OSTI]

FAULT DETECTION AND STATE EVALUATION OF ROTOR BLADES Yuri Petryna, Andreas Künzel, Matthias an approach for cost-effective, serial integrity tests of rotor blades. At that, manufacturing faults shall be automatically detected, localized and assessed with respect to their impact on the integrity of rotor blades

Boyer, Edmond

99

Reduction of multi-stage disk models: Application to an industrial rotor  

E-Print Network [OSTI]

of the rotor into sectors. The bladed disks are coupled by intermediate rings which remove the problem that of a small portion, typically a bladed sector. This configuration no longer holds in real rotors due with multi-stage rotors. However, as underlined by Bladh et al.6 , the critical point is the choice

Boyer, Edmond

100

RESULTS AND DISCUSSION Part II AH-1G ROTOR IN LOW SPEED DESCENT FLIGHT  

E-Print Network [OSTI]

, results are presented for a two-bladed AH-1G rotor in a low-speed descent condition. In low speed forward and Acoustics Test (TAAT) was conducted on an AH-1G Cobra. It used highly instrumented rotor blades direction. The inner Navier-Stokes zone includes about 39% of the total grid points. The rotor has

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES  

E-Print Network [OSTI]

DETECTION OF IMPULSE-LIKE AIRBORNE SOUND FOR DAMAGE IDENTIFICATION IN ROTOR BLADES OF WIND TURBINES burdens of wind turbines. To detect damage of rotor blades, several research projects focus on an acoustic, rotor blade, wind turbine INTRODUCTION There are several publications of non destructive damage

Boyer, Edmond

102

American Institute of Aeronautics Astronautics DEVELOPMENT OF UNSTEADINESS IN A ROTOR WAKE  

E-Print Network [OSTI]

- speed forward flight (or cross-wind), where the wake is swept behind the rotor, the effect of ground1 American Institute of Aeronautics Astronautics DEVELOPMENT OF UNSTEADINESS IN A ROTOR WAKE Georgia Institute of Technology Atlanta, GA 30332-0150 ABSTRACT The flow field around the rotor in ground

103

Study of the non-linear dynamic response of a rotor system with faults and uncertainties  

E-Print Network [OSTI]

of the non-linear re- sponse in rotor systems with multi-faults (such as unbalance, asymmetric shaft, bow and Ferraris in fixed frame [10]. · The bow is an initial deformation of the rotor which can be caused) or all parts of the rotor (extended bow). Darpe [12] proposes to investigate the influence of a bow

Paris-Sud XI, Université de

104

LOSS OF ROTOR ISOTROPY AS A BLADE DAMAGE INDICATOR FOR WIND TURBINE STRUCTURE HEALTH MONITORING SYSTEMS  

E-Print Network [OSTI]

LOSS OF ROTOR ISOTROPY AS A BLADE DAMAGE INDICATOR FOR WIND TURBINE STRUCTURE HEALTH MONITORING to simulated vibrations of a rotating rotor. KEYWORDS : wind turbine blade, rotor anisotropy, Floquet analysis, OMA INTRODUCTION Blades of modern wind turbines are complex high-tech structures, and their cost

Paris-Sud XI, Universit de

105

The Great Marble Drop  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 and NbSe2DifferentThe FiveD. The Law ofGorgeGreat

106

The Great Marble Drop  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAboutManusScience andFebruaryTheFarrel W.Great Gas

107

Structural health and prognostics management for offshore wind turbines : case studies of rotor fault and blade damage with initial O&M cost modeling.  

SciTech Connect (OSTI)

Operations and maintenance costs for offshore wind plants are significantly higher than the current costs for land-based (onshore) wind plants. One way to reduce these costs would be to implement a structural health and prognostic management (SHPM) system as part of a condition based maintenance paradigm with smart load management and utilize a state-based cost model to assess the economics associated with use of the SHPM system. To facilitate the development of such a system a multi-scale modeling approach developed in prior work is used to identify how the underlying physics of the system are affected by the presence of damage and faults, and how these changes manifest themselves in the operational response of a full turbine. This methodology was used to investigate two case studies: (1) the effects of rotor imbalance due to pitch error (aerodynamic imbalance) and mass imbalance and (2) disbond of the shear web; both on a 5-MW offshore wind turbine in the present report. Based on simulations of damage in the turbine model, the operational measurements that demonstrated the highest sensitivity to the damage/faults were the blade tip accelerations and local pitching moments for both imbalance and shear web disbond. The initial cost model provided a great deal of insight into the estimated savings in operations and maintenance costs due to the implementation of an effective SHPM system. The integration of the health monitoring information and O&M cost versus damage/fault severity information provides the initial steps to identify processes to reduce operations and maintenance costs for an offshore wind farm while increasing turbine availability, revenue, and overall profit.

Myrent, Noah J. [Purdue Center for Systems Integrity, Lafayette, IN; Kusnick, Joshua F. [Purdue Center for Systems Integrity, Lafayette, IN; Barrett, Natalie C. [Purdue Center for Systems Integrity, Lafayette, IN; Adams, Douglas E. [Purdue Center for Systems Integrity, Lafayette, IN; Griffith, Daniel Todd

2013-04-01T23:59:59.000Z

108

TLA-55 Rotor Used in Beckman Coulter OptimaTM  

E-Print Network [OSTI]

Ultracentrifuges Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo should be read and understood before operation or maintenance of this equipment is attempted. When you, and tested for safety and reliability as part of a Beckman Coulter ultracentrifuge/rotor system. Its safety

Pawlowski, Wojtek

109

Offshore Series Wind Turbine Variable Hub heights & rotor diameters  

E-Print Network [OSTI]

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

Firestone, Jeremy

110

Single Molecular Rotor at the Nanoscale Christian Joachim1  

E-Print Network [OSTI]

?schlikon, Switzerland E-mail: gim@zurich.ibm.com The design of a monomolecular engine such as a rotating motor ®rst requires the preparation of a semi-classical rotating motion of the rotor part of the engine. We show versions of machines in our daily life, using the same working principles such as, for instance, a steam

Gimzewski, James

111

Phase modulated rotor angle encoder for switched reluctance motor drive  

E-Print Network [OSTI]

sensor. In an inexpensive systein, the rotor position sensor comprises of a magnetized ring along with Hall etfect sensors or opto-interrupters with slotted clisk. An optical sensor has a, light emitting diode which acts as a light transmitter, enid a...

Mahajan, Shailendra

1993-01-01T23:59:59.000Z

112

DEVELOPMENT OF TIP CLEARANCE FLOW DOWNSTREAM OF A ROTOR BLADE WITH COOLANT INJECTION FROM A TIP TRENCH  

E-Print Network [OSTI]

DEVELOPMENT OF TIP CLEARANCE FLOW DOWNSTREAM OF A ROTOR BLADE WITH COOLANT INJECTION FROM A TIP Rotor blade height Um Mean wheel speed, i.e. midspan rotor speed Absolute flow angle measured from the nozzle guide vane and the rotor blade need to be cooled adequately in order to maintain the 1 #12

Camci, Cengiz

113

Performance of twist-coupled blades on variable speed rotors  

SciTech Connect (OSTI)

The load mitigation and energy capture characteristics of twist-coupled HAWT blades that are mounted on a variable speed rotor are investigated in this paper. These blades are designed to twist toward feather as they bend with pretwist set to achieve a desirable twist distribution at rated power. For this investigation, the ADAMS-WT software has been modified to include blade models with bending-twist coupling. Using twist-coupled and uncoupled models, the ADAMS software is exercised for steady wind environments to generate C{sub p} curves at a number of operating speeds to compare the efficiencies of the two models. The ADAMS software is also used to generate the response of a twist-coupled variable speed rotor to a spectrum of stochastic wind time series. This spectrum contains time series with two mean wind speeds at two turbulence levels. Power control is achieved by imposing a reactive torque on the low speed shaft proportional to the RPM squared with the coefficient specified so that the rotor operates at peak efficiency in the linear aerodynamic range, and by limiting the maximum RPM to take advantage of the stall controlled nature of the rotor. Fatigue calculations are done for the generated load histories using a range of material exponents that represent materials from welded steel to aluminum to composites, and results are compared with the damage computed for the rotor without twist-coupling. Results indicate that significant reductions in damage are achieved across the spectrum of applied wind loading without any degradation in power production.

Lobitz, D.W.; Veers, P.S.; Laino, D.J.

1999-12-07T23:59:59.000Z

114

Adaptor assembly for coupling turbine blades to rotor disks  

DOE Patents [OSTI]

An adaptor assembly for coupling a blade root of a turbine blade to a root slot of a rotor disk is described. The adaptor assembly includes a turbine blade having a blade root and an adaptor body having an adaptor root. The adaptor body defines a slot having an open end configured to receive the blade root of the turbine blade such that the adaptor root of the adaptor body and the blade root of the turbine blade are adjacent to one another when the blade root of the turbine blade is positioned within the slot. Both the adaptor root of the adaptor body and the blade root of the turbine blade are configured to be received within the root slot of the rotor disk.

Garcia-Crespo, Andres Jose; Delvaux, John McConnell

2014-09-23T23:59:59.000Z

115

Analysis of a teetered, variable-speed rotor: final report  

SciTech Connect (OSTI)

A computer model of a horizontal axis wind turbine (HOOT) with four structural degrees of freedom has been derived and verified. The four degrees of freedom include flapwise motion of the blades, teeter motion, and variable rotor speed. Options for the variable rotor speed include synchronous, induction, and constant-tip speed generator models with either start, stop, or normal operations. Verification is made by comparison with analytical solutions and mean and cyclic ESI-80 data. The Veers full-field turbulence model is used as a wind input for a synchronous and induction generator test case during normal operation. As a result of the comparison, it is concluded that the computer model can be used to predict accurately mean and cyclic loads with a turbulent wind input. 47 refs., 19 figs.

Weber, T.L.; Wilson, R.E.; Walker, S.N. (Oregon State Univ., Corvallis, OR (USA). Dept. of Mechanical Engineering) [Oregon State Univ., Corvallis, OR (USA). Dept. of Mechanical Engineering

1991-06-01T23:59:59.000Z

116

Preform spar cap for a wind turbine rotor blade  

DOE Patents [OSTI]

A spar cap for a wind turbine rotor blade. The spar cap may include multiple preform components. The multiple preform components may be planar sheets having a swept shape with a first end and a second end. The multiple preform components may be joined by mating the first end of a first preform component to the second end of a next preform component, forming the spar cap.

Livingston, Jamie T. (Simpsonville, SC); Driver, Howard D. (Greer, SC); van Breugel, Sjef (Enschede, NL); Jenkins, Thomas B. (Cantonment, FL); Bakhuis, Jan Willem (Nijverdal, NL); Billen, Andrew J. (Daarlerveen, NL); Riahi, Amir (Pensacola, FL)

2011-07-12T23:59:59.000Z

117

Embedded Real-Time Systems Electrical Model Quad Rotor UAV  

E-Print Network [OSTI]

Sys (2013-2014) #12;10 System SW view joystick QR PC link PC lift roll pitch yaw sensorsES joystickIn4073 Embedded Real-Time Systems Electrical Model Quad Rotor UAV #12;2 TE0300 FPGA System HW view), pitch rate (M), and yaw rate (N) (see qrsim for example!) x z y engine 4 engine 3 engine 2 engine 1 In

Langendoen, Koen

118

Oxygen-Diffused Titanium as a Candidate Brake Rotor Material  

SciTech Connect (OSTI)

Titanium alloys are one of several candidate materials for the next generation of truck disk brake rotors. Despite their advantages of lightweight relative to cast iron and good strength and corrosion resistance, titanium alloys are unlikely to be satisfactory brake rotor materials unless their friction and wear behavior can be significantly improved. In this study, a surface engineering process oxygen diffusion was applied to titanium rotors and has shown very encouraging results. The oxygen diffused Ti-6Al-4V (OD-Ti) was tested on a sub-scale brake tester against a flat block of commercial brake lining material and benchmarked against several other Ti-based materials, including untreated Ti-6Al-4V, ceramic particle-reinforced Ti composites (MMCs), and a thermal-spray-coated Ti alloy. With respect to friction, the OD-Ti outperformed all other candidate materials under the imposed test conditions with the friction coefficient remaining within a desirable range of 0.35-0.50, even under the harshest conditions when the disk surface temperature reached nearly 600 ?C. In addition, the OD-Ti showed significantly improved wear-resistance over the non-treated one and was even better than the Ti-based composite materials.

Qu, Jun [ORNL; Blau, Peter Julian [ORNL; Jolly, Brian C [ORNL

2009-01-01T23:59:59.000Z

119

Blade platform seal for ceramic/metal rotor assembly  

DOE Patents [OSTI]

A combination ceramic and metal turbine rotor for use in high temperature gas turbine engines includes a metal rotor disc having a rim with a plurality of circumferentially spaced blade root retention slots therein to receive a plurality of ceramic blades, each including side platform segments thereon and a dovetail configured root slidably received in one of the slots. Adjacent ones of the platform segments including edge portions thereon closely spaced when the blades are assembled to form expansion gaps in an annular flow surface for gas passage through the blades and wherein the assembly further includes a plurality of unitary seal members on the rotor connected to its rim and each including a plurality of spaced, axially extending, flexible fingers that underlie and conform to the edge portions of the platform segments and which are operative at turbine operating temperatures and speeds to distribute loading on the platform segments as the fingers are seated against the underside of the blade platforms to seal the gaps without undesirably stressing thin web ceramic sections of the platform.

Wertz, John L. (Indianapolis, IN)

1982-01-01T23:59:59.000Z

120

Preliminary structural design conceptualization for composite rotor for verdant power water current turbine  

SciTech Connect (OSTI)

Sandia National Laboratories (SNL) and Verdant Power Inc. (VPI) have partnered under a Cooperative Research and Development Agreement (CRADA) to develop a new kinetic hydropower rotor. The rotor features an improved hydrodynamic and structural design which features state-of-the-art technology developed for the wind industry. The new rotor will have higher energy capture, increased system reliability, and reduction of overall cost of energy. This project was divided into six tasks: (1) Composite Rotor Project Planning and Design Specification; (2) Baseline Fatigue Testing and Failure analysis; (3) Develop Blade/Rotor Performance Model; (4) Hydrofoil Survey and Selection; (5) FEM Structural Design; and (6) Develop Candidate Rotor Designs and Prepare Final Report.

Paquette, J. A.

2012-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Pump impeller-shroud leakage path forces: their effect on a Jeffcott rotor  

E-Print Network [OSTI]

for finding the frequency of free vibration as well as system stability. All results lead to the conclusion that the forces have little influence on natural frequency but can have appreciable effects on system stability. Specifically, at higher values.... Figure 15. Frequency response: whirl amplitude. Frequency response: phase angle, Rotor orbit during free vibration. Time history of rotor whirl frequency ratio during free vibration, 32 32 36 36 Figure 16. Figure 17. Rotor orbit during...

Williams, James Philip

1988-01-01T23:59:59.000Z

122

Toughness of Cr-Mo-V steels for steam-turbine rotors  

SciTech Connect (OSTI)

Cr-Mo-V steels are used extensively as the rotor material in the High Pressure and Intermediate Pressure Sections of modern steam turbines. The toughness of these rotors has a major influence on the reliability and efficiency of the turbine and the overall economy of operation and maintenance of the plant. The metallurgical factors affecting the toughness of the rotors and the methods to improve the toughness are now understood better than ever before. This paper will present a broad overview of the materials and design aspects of the toughness of Cr-Mo-V rotors with emphasis on the salient results of recent research programs aimed at improving their toughness.

Viswanathan, R.; Jaffee, R.I.

1982-04-01T23:59:59.000Z

123

Tuning thermal mismatch between turbine rotor parts with a thermal medium  

DOE Patents [OSTI]

In a turbine rotor, an aft shaft wheel and the final-stage wheel of the rotor are coupled together, including by a rabbeted joint. During shutdown and startup of the turbine, a thermal mismatch between the aft shaft wheel and final-stage wheel is avoided by respectively heating and cooling the aft shaft wheel to maintain the thermal mismatch within acceptable limits, thereby avoiding opening of the rabbeted joint and the potential for unbalancing the rotor and rotor vibration. The thermal medium may be supplied by piping in the aft bearing cavity into the cavity between the forward closure plate and the aft shaft wheel.

Schmidt, Mark Christopher (Niskayuna, NY)

2001-01-01T23:59:59.000Z

124

Design Assessments of a Magnetic-geared Double-rotor Permanent Magnet Generator.  

E-Print Network [OSTI]

??The purpose of this research is to provide systematic design of a permanent magnet (PM) generator, by adopting the double-rotor and the coaxial magnetic gear (more)

Chung, He-Yu

2013-01-01T23:59:59.000Z

125

National Forest Inventory of Great  

E-Print Network [OSTI]

National Forest Inventory of Great Britain Survey Manual #12;2 Remember to Save your Edit Session Regularly, Validate the information and Backup the Data NFI Survey Manual National Forest Inventory Survey in the surveys contributes to the National Forest Inventory (NFI) of Great Britain. With the information from

126

Neural Network Based Modeling of a Large Steam Turbine-Generator Rotor Body Parameters from On-Line Disturbance Data  

E-Print Network [OSTI]

Neural Network Based Modeling of a Large Steam Turbine-Generator Rotor Body Parameters from On technique to estimate and model rotor- body parameters of a large steam turbine-generator from real time

127

Hybrid Rotor Compression for Multiphase and Liquids-Rich Wellhead  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinement plasmasSandy-Nor'easter SituationHybrid Hybrid Rotor

128

The Ultra-micro Wave Rotor Research at Michigan State University Florin Iancu, Janusz Piechna*  

E-Print Network [OSTI]

University of Technology 24 Nowowiejska Str., 00-665 Warsaw, Poland ABSTRACT Ultra Micro Gas Turbines (Uµ concepts of incorporating a wave rotor to an ultra-micro gas turbine and the advantages of wave rotors be estimated at about 70%. 1. INTRODUCTION Starting in 1995, with the MIT "Micro Gas Turbine" project

Müller, Norbert

129

Nonlinear Dynamics of a Rotor Supported by Homopolar Magnetic Bearings with Saturation  

E-Print Network [OSTI]

magnetic bearing model. The nonlinear dynamics of permanent magnet-biased homopolar magnetic bearing (PMB HoMB) system with 2-dof rigid and 4-dof flexible rotor is analyzed. The dynamic behavior of the rotor-bearing system is examined in the feedback...

Kang, Kyungdae

2011-02-22T23:59:59.000Z

130

H-G Diagram Based Rotor Parameters Identification for Induction Motors Thermal Monitoring  

E-Print Network [OSTI]

H-G Diagram Based Rotor Parameters Identification for Induction Motors Thermal Monitoring Mohamed: In this paper, an effective on-line method for induction motor parameter identification, especially rotor for each operating point. Computer simulations and experimental tests, carried out for a 4-kW four

Brest, Université de

131

Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow  

E-Print Network [OSTI]

Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow S in a rotor-stator cavity subjected to a superimposed throughflow with heat transfer. Nu- merical predictions field from the heat transfer process. The turbulent flux is approximated by a gradient hypothesis

Boyer, Edmond

132

Numerical Investigation of a Wind Turbine Rotor with an aerodynamically redesigned hub-region  

E-Print Network [OSTI]

Numerical Investigation of a Wind Turbine Rotor with an aerodynamically redesigned hub-region J methods on a redesigned modern Mega-Watt sized wind turbine, where the new design includes an increase of the blade in the vicinity of the wind turbine nacelle, to obtain an aerodynamically more efficient rotor

133

RIS0-M-2432 SIMPLIFIED LAWS OF SIMIALRITY FOR WIND TURBINE ROTORS  

E-Print Network [OSTI]

RIS0-M-2432 SIMPLIFIED LAWS OF SIMIALRITY FOR WIND TURBINE ROTORS Helge Petersen The Test Station for Small Windmills Abstract, Laws of similarity or scaling laws for the character- istics of a wind turbine rotor are of importance to the designer even during the initial design phase of a new wind turbine con

134

Thermodynamic Cycle Analysis for Wave Rotor Combustor Based Combined Cycle Jessica Collins1  

E-Print Network [OSTI]

Thermodynamic Cycle Analysis for Wave Rotor Combustor Based Combined Cycle Jessica Collins1 , Brian of Engineering and Technology The conventional combustor that exists in today's market is a constant pressure device; whereas, the wave rotor combustor investigated in the present research is a constant volume

Zhou, Yaoqi

135

Sparkr Blade Test Centre Wind turbines with a rotor diameter exceed-  

E-Print Network [OSTI]

Sparkr Blade Test Centre Wind turbines with a rotor diameter exceed- ing 2 metres must have a type of a wind turbine. Failure of a rotor blade in service often involves damage of the entire turbine operating type cer- tification systems for wind turbines. Reg. no. 427 The Sparkr Blade Test Centre became

136

RECENT ADVANCES IN SMART-MATERIAL ROTOR CONTROL ACTUATION. Victor Giurgiutiu*,  

E-Print Network [OSTI]

RECENT ADVANCES IN SMART-MATERIAL ROTOR CONTROL ACTUATION. Victor Giurgiutiu*, University of South achievements in the application of active-materials actuation to counteract aeroelastic and vibration effects and capabilities is done first. Attention is focused on the smart rotor-blade applications. The induced twist

Giurgiutiu, Victor

137

Great Clips Green Spoon Cafe  

E-Print Network [OSTI]

Great Clips Green Spoon Cafe The Hole Sports Lounge Hong Kong Noodle Jamba Juice Jasmine Orchid's Hair Salon Smokedale Tobacco Sport Clips Starbucks Stub and Herb's TCF Bank The Tea Garden Tea House

Dahlberg, E. Dan

138

Shetland and the Great War  

E-Print Network [OSTI]

The Great War was an enormous global cataclysm affecting the lives of all inhabitants of the combatant countries and many others. The effects were not uniform, however, and, by assessing the experience of the people of ...

Riddell, Linda Katherine

2012-11-30T23:59:59.000Z

139

Great Cities Institute Comparative Urbanisms  

E-Print Network [OSTI]

Great Cities Institute Comparative Urbanisms Seminar Series Governance and Social Innovation those "socially innovative strategies" undertaken by citizens in different European cities, identity, governance and social innovation. Her upcoming publications include "Multilevel Governance

Illinois at Chicago, University of

140

Rocky Great Mountains Southwest Plains  

E-Print Network [OSTI]

Rocky Great Mountains Southwest Plains Research Note RM.502 January 1991 USDA Forest Service Rocky),Carbondale, IL.2 Propellant is now solely available through Winn- Star, Inc. (WSI),Marion, IL.,2which also

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Advanced Flywheel Composite Rotors: Low-Cost, High-Energy Density Flywheel Storage Grid Demonstration  

SciTech Connect (OSTI)

GRIDS Project: Boeing is developing a new material for use in the rotor of a low-cost, high-energy flywheel storage technology. Flywheels store energy by increasing the speed of an internal rotor slowing the rotor releases the energy back to the grid when needed. The faster the rotor spins, the more energy it can store. Boeings new material could drastically improve the energy stored in the rotor. The team will work to improve the storage capacity of their flywheels and increase the duration over which they store energy. The ultimate goal of this project is to create a flywheel system that can be scaled up for use by electric utility companies and produce power for a full hour at a cost of $100 per kilowatt hour.

None

2010-10-01T23:59:59.000Z

142

Manufacturing and properties of newly developed 9%CrMoVNiNbN high-pressure low-pressure rotor shaft forging  

SciTech Connect (OSTI)

In order to obtain the improved strength and toughness for high-pressure low-pressure rotor shaft forging, fundamental studies using laboratory heats were performed on the 9CrMoV base materials, and effects of chemistry on toughness and creep rupture strength were investigated. From the investigation, it is showed that the superclean 9CrMoVNiNbN steel with reduced Si and Mn contents and Ni addition provides a superior strength versus toughness balance. Based on these fundamental studies, a trial high-pressure low-pressure rotor shaft forging with diameter of low-pressure section of 1,750 mm and diameter of high-pressure section of 1,200 mm was successfully manufactured from the diameter of 1,800 mm, and the weight of 65 ton ESR ingot. From the evaluation test results of this trial rotor forging, homogeneous distribution of chemistry was confirmed and low impurity contents was observed in the whole forging. The superior strength and toughness were confirmed with good creep rupture strength. The FATT at the center of low-pressure section was {minus}3 C with the tensile strength level of 870 MPa. From the results of fracture toughness test, low cycle fatigue test, and isothermal aging test, superior mechanical properties were demonstrated. Thus, the superclean 9CrMoVNiNbN steel with reduced Si and Mn contents and Ni addition, is particularly suitable for the high-pressure low-pressure rotor material for advanced combined cycle power plants.

Azuma, Tsukasa; Tanaka, Yasuhiko; Ishiguro, Tohru; Yoshida, Hajime; Ikeda, Yasumi [Japan Steel Works, Muroran (Japan)

1997-12-31T23:59:59.000Z

143

VOL. 6, NO. 5, SEPT.-OCT. 1990 J. PROPULSION 621 Stator/Rotor Interaction in a Transonic Turbine  

E-Print Network [OSTI]

on the rotor blade, reflects upstream, and then reflects again off the stator blade Presented as Paper 88 and shows the large unsteadiness in the lift on the rotor blade. Basic NumericalMethod The flowfiVOL. 6, NO. 5, SEPT.-OCT. 1990 J. PROPULSION 621 Stator/Rotor Interaction in a Transonic Turbine

Giles, Mike

144

Planar velocity measurements in two rotorcraft flows are presented. The first is that of an isolated rotor  

E-Print Network [OSTI]

-light-based measurement system. The second flowfield is that of a rotor wake interacting with a fixed wing in a wind field. Isolated rotor in axial flight Substantial uncertainties remain in modeling the wake typical of a full-scale rotor wake. The clean periodicity of this flow allows capture of fundamental

145

Bottle Habitat Region: Great Lakes  

E-Print Network [OSTI]

-liter plastic soda bottles for each group · A water source · A light source (sunlight or a halogen lamp) · BlackBottle Habitat Region: Great Lakes Grade Level(s): 5-8 Time Required: One 50 minute class period/Instructional Strategies: 1. Students will, in groups of four, construct 2 aquatic habitats using 2 two-liter soda bottles

146

GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY  

E-Print Network [OSTI]

Washtenaw Avenue Ann Arbor, Michigan48104 #12;Mention of a commercial company or product does-atmosphere- sediment system of the areas in and around the Great Lakesand coastal and estuarinewaters and the many activities. GLERL'smultidisciplinaryprogram reflectsthe needfor improved understanding, prediction

147

WindPACT Turbine Rotor Design Study: June 2000--June 2002 (Revised)  

SciTech Connect (OSTI)

This report presents the results of the turbine rotor study completed by Global Energy Concepts (GEC) as part of the U.S. Department of Energy's WindPACT (Wind Partnership for Advanced Component Technologies) project. The purpose of the WindPACT project is to identify technology improvements that will enable the cost of energy from wind turbines to fall to a target of 3.0 cents/kilowatt-hour in low wind speed sites. The study focused on different rotor configurations and the effect of scale on those rotors.

Malcolm, D. J.; Hansen, A. C.

2006-04-01T23:59:59.000Z

148

Adaptor assembly for coupling turbine blades to rotor disks  

SciTech Connect (OSTI)

An adaptor assembly for coupling a blade root of a turbine blade to a root slot of a rotor disk is disclosed. The adaptor assembly may generally include an adaptor body having a root configured to be received within the root slot. The adaptor body may also define a slot having an open end configured to receive the blade root. The adaptor body may further define a channel. The adaptor assembly may also include a plate having an outwardly extending foot. The foot may be configured to be received within the channel. Additionally, the plate may be configured to cover at least a portion of the open end of the slot when the foot is received within the channel.

Delvaux, John McConnel; Garcia-Crespo, Andres Jose; Joyce, Kilmer Joseph; Tindell, Allan Randall

2014-06-03T23:59:59.000Z

149

Final project report: High energy rotor development, test and evaluation  

SciTech Connect (OSTI)

Under the auspices of the {open_quotes}Government/Industry Wind Technology Applications Project{close_quotes} [{open_quotes}Letter of Interest{close_quotes} (LOI) Number RC-1-11101], Flo Wind Corp. has successfully developed, tested, and delivered a high-energy rotor upgrade candidate for their 19-meter Vertical Axis Wind Turbine. The project included the demonstration of the innovative extended height-to-diameter ratio concept, the development of a continuous span single-piece composite blade, the demonstration of a continuous blade manufacturing technique, the utilization of the Sandia National Laboratories developed SNLA 2150 natural laminar flow airfoil and the reuse of existing wind turbine and wind power plant infrastructure.

NONE

1996-09-01T23:59:59.000Z

150

Assessment of research needs for wind turbine rotor materials technology  

SciTech Connect (OSTI)

Wind-driven power systems is a renewable energy technology that is still in the early stages of development. Wind power plants installed in early 1980s suffered structural failures chiefly because of incomplete understanding of wind forces (turbulent), in some cases because of poor product quality. Failures of rotor blades are now somewhat better understood. This committee has examined the experience base accumulated by wind turbines and the R and D programs sponsored by DOE. It is concluded that a wind energy system such as is described is within the capability of engineering practice; however because of certain gaps in knowledge, and the presence of only one major integrated manufacturer of wind power machines in the USA, a DOE R and D investment is still required.

Not Available

1991-01-01T23:59:59.000Z

151

Cooling system for a bearing of a turbine rotor  

DOE Patents [OSTI]

In a gas turbine, a bore tube assembly radially inwardly of an aft bearing conveys cooling steam to the buckets of the turbine and returns the cooling steam to a return. To cool the bearing and thermally insulate the bearing from the cooling steam paths, a radiation shield is spaced from the bore tube assembly by a dead air gap. Additionally, an air passageway is provided between the radiation shield and the inner surface of an aft shaft forming part of the rotor. Air is supplied from an inlet for flow along the passage and radially outwardly through bores in the aft shaft disk to cool the bearing and insulate it from transfer of heat from the cooling steam.

Schmidt, Mark Christopher (Niskayuna, NY)

2002-01-01T23:59:59.000Z

152

Great Lakes Steel -- PCI facility  

SciTech Connect (OSTI)

This paper discusses the planning, design, and start-up of the 90 tph PCI facility for National Steel`s Great Lakes Steel Division in River Rouge, MI. This project is owned and operated by Edison Energy Services, and was implemented on a fast-track basis by Raytheon Engineers and Constructors, Babcock Material Handling, and Babcock and Wilcox. This paper presents important process issues, basic design criteria, an the challenges of engineering and building a state-of-the-art PCI facility in two existing plants. Pulverized coal is prepared at the River Rouge Power Plant of Detroit Edison, is pneumatically conveyed 6,000 feet to a storage silo at Great Lakes Steel, and is injected into three blast furnaces.

Eichinger, F.T. [BMH Claudius Peters AG, Buxtehude (Germany); Dake, S.H.; Wagner, E.D.; Brown, G.S. [Raytheon Engineers and Constructors, Pittsburgh, PA (United States)

1997-12-31T23:59:59.000Z

153

The cost of noise reduction for departure and arrival operations of commercial tilt rotor aircraft  

E-Print Network [OSTI]

The relationship between direct operating cost (DOC) and noise annoyance due to a departure and an arrival operation was developed for commercial tilt rotor aircraft. This was accomplished by generating a series of tilt ...

Faulkner, Henry B.

1976-01-01T23:59:59.000Z

154

American Institute of Aeronautics and Astronautics Wave Rotor Research Program at Michigan State University  

E-Print Network [OSTI]

and power generation purposes including utilization of wave rotors for microturbines, ultra-micro gas turbines, and water refrigeration systems. In collaboration with the research team at Warsaw University

Müller, Norbert

155

Identification of rotordynamic forces in a flexible rotor system using magnetic bearings  

E-Print Network [OSTI]

Methods are presented for parameter identification of an annular gas seal on a flexiblerotor test rig. Dynamic loads are applied by magnetic bearings (MBs) that support the rotor. MB forces are measured using fiber-optic strain gauges...

Zutavern, Zachary Scott

2009-06-02T23:59:59.000Z

156

A study of chaos in a rotor system supported by ball bearings  

E-Print Network [OSTI]

. Numerous researchers have published a myriad of papers on the application of chaos theory to mechanical, electrical and biological systems. However, control theories of chaos have been in existence for only a decade and have not been applied to rotor...

Ortiz, Steven Rey

2013-02-22T23:59:59.000Z

157

An efficient algorithm for blade loss simulations applied to a high-order rotor dynamics problem  

E-Print Network [OSTI]

In this thesis, a novel approach is presented for blade loss simulation of an aircraft gas turbine rotor mounted on rolling element bearings with squeeze film dampers, seal rub and enclosed in a flexible housing. The modal truncation augmentation...

Parthasarathy, Nikhil Kaushik

2004-09-30T23:59:59.000Z

158

Hybrid gas bearings with controlled supply pressure to eliminate rotor vibrations while crossing system critical speeds  

E-Print Network [OSTI]

Micro-turbomachinery (MTM) implements gas bearings in compact units of enhanced mechanical reliability. Gas bearings, however, have little damping and are prone to wear during frequent rotor start-up and shut down conditions. Externally pressurized...

Ryu, Keun

2009-05-15T23:59:59.000Z

159

A RIGOROUS, ENGINEER-FRIENDLY APPROACH FOR MODELING REALISTIC, COMPOSITE ROTOR BLADES  

E-Print Network [OSTI]

structures of the type encountered in wind turbine blades, helicopter rotor blades, and the like such as wind turbine blades lead to a splitting of the problem into a (usually) linear, two-dimensional cross

Yu, Wenbin

160

Effects of rotor tip clearance on an embedded compressor stage performance  

E-Print Network [OSTI]

Compressor efficiency variation with rotor tip gap is assessed using numerical simulations on an embedded stage representative of that in a large industrial gas turbine with Reynolds number being approximately 2 x 106 to ...

Sakulkaew, Sitanun

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

UPWIND, Aerodynamics and aero-elasticity Rotor aerodynamics in atmospheric shear flow  

E-Print Network [OSTI]

UPWIND, Aerodynamics and aero-elasticity Rotor aerodynamics in atmospheric shear flow Niels N codes for wind turbines utilize aerodynamics based on BEM methods, see [1, 2]. For modern large scale

162

An embedded controller for quad-rotor flying robots running distributed algorithms  

E-Print Network [OSTI]

Multiple collaborating quad-rotor flying robots are useful in a broad range of applications, from surveillance with onboard cameras to reconfiguration of wireless networks. For these applications, it is often advantageous ...

Julian, Brian John

2009-01-01T23:59:59.000Z

163

The effect of teeth-on-stator labyrinth seals on rotor imbalance response  

E-Print Network [OSTI]

, diverging and straight refer to the pattern of cleatances between the blades and the rotor in the direction of fluid flow. Figure 2 depicts the seal clearance patterns. Synchronous response tests wctu repeated after installation of each seal to observe...THE EFFECT OF TEETH-ON-STATOR LABYRINTH SEALS ON ROTOR IMBALANCE RESPONSE A Thesis by EILEEN MARIE CONWAY Submitted to the Office of Graduate Studies of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER...

Conway, Eileen Marie

1991-01-01T23:59:59.000Z

164

Ris-R-1486(EN) KNOW-BLADE Task-3.3 report; Rotor  

E-Print Network [OSTI]

an array of VGs. The wind turbine blade is the LM19.1 blade equipped with one pair of VGs placed at radiusRisø-R-1486(EN) KNOW-BLADE Task-3.3 report; Rotor Blade Computations with 3D Vortex Generators: KNOW-BLADE Task-3.3 report; Rotor Blade Computations with 3D Vortex Generators Risø-R-1486(EN) January

165

Imbalance response of a rigid rotor supported on end sealed integral squeeze film dampers  

E-Print Network [OSTI]

IMBALANCE RESPONSE OF A RIGID ROTOR SUPPORTED ON END SEALED INTEGRAL SQUEEZE FILM DAMPERS A Thesis by OSCAR CESAR DE SANTIAGO DURAN Submitted to the Ofhce of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1998 Major Subject: Mechanical Engineering IMBALANCE RESPONSE OF A RIGID ROTOR SUPPORTED ON END SEALED INTEGRAL SQUEEZE FILM DAMPERS A Thesis by OSCAR. CESAR DE SANTIAGO DURAN Submitted to Texas ARM University...

De Santiago Duran, Oscar Cesar

1998-01-01T23:59:59.000Z

166

Analytical determination of performance degradation on a helicopter main rotor due to ice accretion  

E-Print Network [OSTI]

ANALYTICAL DETERMINATION OF PERFORMANCE DEGRADATION ON A HELICOPTER MAIN ROTOR DUE TO ICE ACCRETION A Thesis by JAVIER CAMBA III Submitted to the Graduate College of Texas AIIM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1986 Major Subject: Aerospace Engineering ANALYTICAL DETERMINATION OF PERFORMANCE DEGRADATION ON A HELICOPTER MAIN ROTOR DUE TO ICE ACCRETION A Thesis by JAVIER CAMBA III Approval as to style and content by...

Camba, Javier

1986-01-01T23:59:59.000Z

167

Genetic icing effects on forward flight performance of a model helicopter rotor  

E-Print Network [OSTI]

GENERIC ICING EFFECTS ON FORWARD FLIGHT PERFORMANCE OF A MODEL HELICOPTER ROTOR A Thesis ANA FIORELLA TINETTI-SANCHEZ Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1987 Major Subject: Aerospace Engineering GENERIC ICING EFFECTS ON FORWARD FLIGHT PERFORMANCE OF A MODEL HELICOPTER ROTOR A Thesis by ANA FIORELLA TINETTI-SANCHEZ Approved as to style and content by: Kenneth D. Korkan...

Tinetti-Sanchez, Ana Fiorella

1987-01-01T23:59:59.000Z

168

How to improve open rotor aerodynamics at cruise and take-off  

E-Print Network [OSTI]

1 Copyright 2014 University of Cambridge DRAFT HOW TO IMPROVE OPEN ROTOR AERODYNAMICS AT CRUISE AND TAKE-OFF Cesare Hall, Alexios Zachariadis, Tobias Brandvik, Nishad Sohoni cah1003@cam.ac.uk University of Cambridge, Whittle... Laboratory 1 JJ Thomson Avenue, Cambridge CB3 0DY ABSTRACT A key challenge in open rotor design is getting the optimum aerodynamics at both the cruise and take-off conditions. This is particularly difficult because the operation and the requirements...

Hall, Cesare; Zachariadis, Alexios; Brandvik, Tobias; Sohoni, Nishad

169

Upper Great Plains Home page  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduledProductionCCEIResearch Upper Great Plains Service

170

The Great Gas Hydrate Escape  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus TomAboutManusScience andFebruaryTheFarrel W.Great Gas Hydrate

171

Control system for a wound-rotor motor  

DOE Patents [OSTI]

A load switching circuit for switching two or more transformer taps under load carrying conditions includes first and second parallel connected bridge rectifier circuits which control the selective connection of a direct current load to taps of a transformer. The first bridge circuit is normally conducting so that the load is connected to a first tap through the first bridge circuit. To transfer the load to the second tap, a switch is operable to connect the second bridge circuit to a second tap, and when the second bridge circuit begins to conduct, the first bridge circuit ceases conduction because the potential at the second tap is higher than the potential at the first tap, and the load is thus connected to the second tap through the second bridge circuit. The load switching circuit is applicable in a motor speed controller for a wound-rotor motor for effecting tap switching as a function of motor speed while providing a stepless motor speed control characteristic.

Ellis, James N. (Chatsworth, CA)

1983-01-01T23:59:59.000Z

172

Dynamic Rotor Deformation and Vibration Monitoring Using a Non-Incremental Laser Doppler Distance Sensor  

SciTech Connect (OSTI)

Monitoring rotor deformations and vibrations dynamically is an important task for improving the safety and the lifetime as well as the energy efficiency of motors and turbo machines. However, due to the high rotor speed encountered in particular at turbo machines, this requires concurrently a high measurement rate and high accuracy, which can not be fulfilled by most commercially available sensors. To solve this problem, we developed a non-incremental laser Doppler distance sensor (LDDS), which is able to measure simultaneously the in-plane velocity and the out-of-plane position of moving rough solid objects with micrometer precision. In addition, this sensor concurrently offers a high temporal resolution in the microsecond range, because its position uncertainty is in principle independent of the object velocity in contrast to conventional distance sensors, which is a unique feature of the LDDS. Consequently, this novel sensor enables precise and dynamic in-process deformation and vibration measurements on rotating objects, such as turbo machine rotors, even at very high speed. In order to evidence the capability of the LDDS, measurements of rotor deformations (radial expansion), vibrations and wobbling motions are presented at up to 50,000 rpm rotor speed.

Pfister, Thorsten; Guenther, Philipp; Dreier, Florian; Czarske, Juergen [Technische Universitaet Dresden, Faculty of Electrical Engineering and Information Technology, Laboratory for Measurement and Testing Techniques, Helmholtzstrasse 18, D-01062 Dresden (Germany)

2010-05-28T23:59:59.000Z

173

NON-STATIONARY TEMPERATURE STRESSES IN THE INDUSTRIAL STEAM TURBINE ROTOR  

E-Print Network [OSTI]

The usage of industrial steam turbines in different industrial branches (chemistry, petrochemistry, refineries, sugar and ethanol plants, etc.) for a generator drive for electricity generation or a mechanical drive for compressors, blowers and pumps, is characterized by the need for high flexibility of operation. High flexibility includes numerous start-ups, shut-downs and power changes during the useful life. Changes in power and steam mass flow lead to changes of the working fluid state in the single turbine stages, and thus their aerodynamic and thermodynamic characteristics. During these transient working regimes in steam turbine rotors, large space and time-dependent temperature gradients appear, which can result in high non-stationary temperature stresses, i.e. increased local stress concentrations, what has a negative impact on the useful life of the rotor. In the worst case they can cause fracture of the turbine rotor. Today, for the determination of thermal stressed state of the steam turbine parts the user softwares based on numerical methods are used. In this paper the results of numerical modelling and calculations of non-stationary temperature fields and related stresses in the rotor of industrial steam turbine of 35 MW power during transient operating regime (a cold startup) will be presented. The results of the calculations serve for estimation of the transient regime impact on the stresses of the rotor, as well as on its entire useful life. Key words: industrial steam turbine, transient regimes, temperature stresses, numerical modelling 1.

Zvonimir Guzovi?; Kreimir Kova?i?; Tihomir Mihali?

174

Non-equilibrium steady state and subgeometric ergodicity for a chain of three coupled rotors  

E-Print Network [OSTI]

We consider a chain of three rotors (rotators) whose ends are coupled to stochastic heat baths. The temperatures of the two baths can be different, and we allow some constant torque to be applied at each end of the chain. Under some non-degeneracy condition on the interaction potentials, we show that the process admits a unique invariant probability measure, and that it is ergodic with a stretched exponential rate. The interesting issue is to estimate the rate at which the energy of the middle rotor decreases. As it is not directly connected to the heat baths, its energy can only be dissipated through the two outer rotors. But when the middle rotor spins very rapidly, it fails to interact effectively with its neighbors due to the rapid oscillations of the forces. By averaging techniques, we obtain an effective dynamics for the middle rotor, which then enables us to find a Lyapunov function. This and an irreducibility argument give the desired result. We finally illustrate numerically some properties of the non-equilibrium steady state.

No Cuneo; Jean-Pierre Eckmann; Christophe Poquet

2014-11-03T23:59:59.000Z

175

Transient analysis of a flywheel battery containment during a full rotor burst event.  

SciTech Connect (OSTI)

Flywheels are being developed for use in an Advanced Locomotive Propulsion System (ALPS) targeted for use in high speed passenger rail service. The ALPS combines high performance, high speed gas turbines, motor/generators and flywheels to provide a light-weight, fuel-efficient power system. Such a system is necessary to avoid the high cost of railway electrification, as is currently done for high speed rail service (>100mph) since diesels are too heavy. The light-weight flywheel rotors are made from multilayered composite materials, and are operated at extremely high energy levels. Metal containment structures have been designed to enclose the rotors and provide encapsulation of the rotor during postulated failure events. One such event is a burst mode failure of the rotor in which the composite rim is assumed to burst into debris that impacts against the containment. This paper presents a finite element simulation of the transient structural response of a subscale metal flywheel containment structure to a rotor burst event.

Hsieh, B. J.

1998-04-17T23:59:59.000Z

176

Axial seal system for a gas turbine steam-cooled rotor  

DOE Patents [OSTI]

An axial seal assembly is provided at the interface between adjacent wheels and spacers of a gas turbine rotor and disposed about tubes passing through openings in the rotor adjacent the rotor rim and carrying a thermal medium. Each seal assembly includes a support bushing for supporting a land of the thermal medium carrying tube, an axially registering seat bushing disposed in the opposed opening and a frustoconical seal between the seal bushing and seat. The seal bushing includes a radial flange having an annular recess for retaining the outer diameter edge of the seal, while the seat bushing has an axially facing annular surface forming a seat for engagement by the inner diameter edge of the seal.

Mashey, Thomas Charles (Anderson, SC)

2002-01-01T23:59:59.000Z

177

THE JOURNAL OF CHEMICAL PHYSICS 135, 094304 (2011) "Adiabatic-hindered-rotor" treatment of the parahydrogen-water complex  

E-Print Network [OSTI]

THE JOURNAL OF CHEMICAL PHYSICS 135, 094304 (2011) "Adiabatic-hindered-rotor" treatment of the parahydrogen-water complex Tao Zeng,1 Hui Li,2 Robert J. Le Roy,1 and Pierre-Nicholas Roy1,a) 1 Department 1 September 2011) Inspired by a recent successful adiabatic-hindered-rotor treatment

Le Roy, Robert J.

178

Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo Alto, California 94304 SW 41 Ti ROTOR  

E-Print Network [OSTI]

Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo and understood before operation or maintenance of this equip- ment is attempted. When you see the symbol on other the performance of the rotor. This rotor was developed, manufactured, and tested for safety and reliability

Pawlowski, Wojtek

179

Scnarios d'interaction rotor/stator pour un compresseur haute pression d'un moteur d'hlicoptre  

E-Print Network [OSTI]

Scénarios d'interaction rotor/stator pour un compresseur haute pression d'un moteur d'hélicoptère A plus de prévoir les zones d'interaction. Rotor-stator interaction scenarios for the centrifugal in the centrifugal com- pressor of helicopter engines when structural contacts occur between the blade

Boyer, Edmond

180

The development of an experimental procedure to determine the amount of active internal friction in a rotor-bearing system  

E-Print Network [OSTI]

. The logarithmic decrement as calculated by the time response is used to determine the active friction force. By affecting the vibrational mode shape (by the use of weights at each end), the free-free rotor can simulate the frictional characteristics of a rotor...

Parker, Jeffrey Scott

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

The effect of adding axial freedom to the blades of a two bladed helicopter rotor  

E-Print Network [OSTI]

cire used on the rotor, the link nas all the blades attacned to it, and tne "teeter-totter" nin!;e rr&rst be excnanSe&! for a univ& rsal point, preferably of tne con: t-rrrt velocitv tyi e. Tne a?de&& blades snoula rrnve a stabilizin;, . irif i...THE Epr'ECT OZ ADDIRQ AX' AL RREEDO?l TO THE Bl ADRS QF A TWO BLADED HELICOPTER ROTOR A Thesis Frank Robert Oradat, Jr. Approveo as to style and content by: (Cnair. san of Co xttee) (liead of Dep tment) May I955 THE EPPECT OP ADDING AXIAL...

Oradat, Frank Robert

1953-01-01T23:59:59.000Z

182

Effect of a straight teeth-on-rotor labyrinth seal on rotordynamics  

E-Print Network [OSTI]

functions were made with the rotor spinning at 4500 rpm with the pressure in the seal section ranging from 0 ? 175 psig, with 25 psi steps. The effects of the increased pressure are presented in the discussion of the results. There is one other point...EFFECT OF A STRAIGHT TEETH-ON-ROTOR LABYRINTH SEAL ON ROTORDYNAMICS A Thesis by JOSEPH JOHN ZIERER, JR. Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER...

Zierer, Joseph John

1991-01-01T23:59:59.000Z

183

Improved Structure and Fabrication of Large, High-Power KHPS Rotors - Final Scientific/Technical Report  

SciTech Connect (OSTI)

Verdant Power, Inc, working in partnership with the National Renewable Energy Laboratory (NREL), Sandia National Laboratories (SNL), and the University of Minnesota St. Anthony Falls Laboratory (SAFL), among other partners, used evolving Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) models and techniques to improve the structure and fabrication of large, high-power composite Kinetic Hydropower System (KHPS) rotor blades. The objectives of the project were to: design; analyze; develop for manufacture and fabricate; and thoroughly test, in the lab and at full scale in the water, the improved KHPS rotor blade.

Corren, Dean [Verdant Power, Inc.; Colby, Jonathan [Verdant Power, Inc.; Adonizio, Mary Ann [Verdant Power, Inc.

2013-01-29T23:59:59.000Z

184

To cite this document: Barbiero, Franck and Vincent, Franois and Deloues, Thierry and Letestu, Franck Effects of rotor blade modulation on GNSS anti-jamming algorithms.  

E-Print Network [OSTI]

, Franck Effects of rotor blade modulation on GNSS anti-jamming algorithms. (2014) In: ION International be sent to the repository administrator: staff-oatao@inp-toulouse.fr #12;Effects of rotor blade modulation rotating bodies, the signal undergo complex and non-stationary effects called Rotor Blade Modulation (RBM

Mailhes, Corinne

185

American Institute of Aeronautics and Astronautics Numerical Solutions for Ultra-Micro Wave Rotors (UWR)  

E-Print Network [OSTI]

, 48824 Starting in 1995, with the MIT "Micro Gas Turbine" project, the mechanical engineering research to an ultra-micro gas turbine. It discusses the advantages of wave rotor as topping units for gas turbines. Introduction ltra Micro Gas Turbines (UµGT) are expected to be the next generation of power source for any

Müller, Norbert

186

Waves of constant shape and the structure of the \\rotors boundary" in excitable media.  

E-Print Network [OSTI]

wave patterns in R 2 , in terms of the kinematic approach. These patterns include rotating waves by Winfree [13]. The kinematic approach of [8] also considered a boundary of existence of spiral waveWaves of constant shape and the structure of the \\rotors boundary" in excitable media. Yu.E. Elkin

Biktashev, Vadim N.

187

2010 Asia-Pacific International Symposium on Aerospace Technology Rotor-stator interaction broadband noise  

E-Print Network [OSTI]

2010 Asia-Pacific International Symposium on Aerospace Technology Rotor-stator interaction-dimensional annular cascade to the impinging harmonic distortions. Each upstream har- monic mode is defined by its and Horan[2] . The #12;· 2 · Igor Vinogradov/ Chinese Journal of Aeronatics typical energy distribution over

Huang, Xun

188

Concurrent Aerodynamic Optimization of Rotor Blades Using a Nash Game Method  

E-Print Network [OSTI]

Concurrent Aerodynamic Optimization of Rotor Blades Using a Nash Game Method Enric Roca Le´on Ph Aerodynamics Leader, Airbus Helicopter, Marignane, France Michel Costes Research Engineer, ONERA, Meudon OF THE AMERICAN HELICOPTER SOCIETY Abstract A multi-objective strategy adapted to the aerodynamic concurrent

Paris-Sud XI, Université de

189

Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow  

E-Print Network [OSTI]

Numerical modeling of heat transfer and fluid flow in rotor-stator cavities with throughflow S the dynamical effects from the heat transfer process. The fluid flow in an enclosed disk system with axial with heat transfer along the stator, which corresponds to the experiment of Djaoui et al. [2]. Our results

Boyer, Edmond

190

Performance of Rotors in a Brushless Doubly-Fed Induction Machine (BDFM)  

E-Print Network [OSTI]

a novel design of BDFM rotor, will perform in a BDFM configured as a variable speed generator. The results The BDFM is attractive as a variable speed generator for wind turbines. In this application, one stator. The BDFM operates in synchronous mode with a fixed relationship between the shaft speed, grid frequency

Cambridge, University of

191

Toward a Better Understanding of Ducted Rotor Antitorque and Directional Control in Forward Flight  

E-Print Network [OSTI]

of the Core Automatic Flight Control System (CAFCS) mode. Figure 1 shows a sustained, large-amplitude 1-Hz yaw ABSTRACT Despite decades of very successful yaw-control and anti-torque applications, the aerodynamics dramatic. From a handling-qualities perspective, the ducted rotor provides the loads capacity required

192

MPC for Wind Power Gradients --Utilizing Forecasts, Rotor Inertia, and Central Energy Storage  

E-Print Network [OSTI]

MPC for Wind Power Gradients -- Utilizing Forecasts, Rotor Inertia, and Central Energy Storage iterations. We demonstrate our method in simulations with various wind scenarios and prices for energy. INTRODUCTION Today, wind power is the most important renewable energy source. For the years to come, many

193

Blade-forced vibration effects in turbomachinery rotor-stator interaction  

E-Print Network [OSTI]

This thesis presents the effects of blade-forced vibration in turbomachinery rotor-stator interaction. A quasi-three-dimensional multi-row analysis, based on an Euler/Navier-Stokes solver and a parallel computational algorithm, was used to simulate...

Collard, Joseph Eugene

2000-01-01T23:59:59.000Z

194

3-D Time-Accurate CFD Simulations of Wind Turbine Rotor Flow Fields  

E-Print Network [OSTI]

problems such as helicopter rotors and propellers. In particular, wind turbine blades can experience large from the tower support on downwind, horizontal axis wind turbines. These blade/inflow/tower wake in large scale wind turbines, because the blade passage frequency is well below the audible range

195

Preliminary Design Procedure for Gas TurbineTopping Reverse-Flow Wave Rotors  

E-Print Network [OSTI]

1 Preliminary Design Procedure for Gas TurbineTopping Reverse-Flow Wave Rotors Pezhman AKBARI1 for implementation in gas turbine applications. First, a thermodynamic cycle analysis evaluates the performance engine. Then, a one-dimensional analytical gas dynamic model of the high-pressure phase (charging zone

Müller, Norbert

196

Field Testing of a Quad Rotor Smartphone Control System  

E-Print Network [OSTI]

With recent regulatory efforts to reduce restrictions placed on the operation of Micro Air Vehicles (MAVs) in the United States, it is likely that in the next few years, these vehicles will become commonplace in the ...

Cummings, M.L.

2012-01-01T23:59:59.000Z

197

GREAT PLAINS INTERSTATE FOREST FIRE COOPERATIVE  

E-Print Network [OSTI]

GREAT PLAINS INTERSTATE FOREST FIRE COMPACT COOPERATIVE ANNUAL OPERATING PLAN 2011 #12;Great Plains are located in Appendices F through K. II. Purpose This cooperative operating plan facilitates assistance ordered through the Compact and used on joint US Federal/State fires will be considered agents

198

J. Great Lakes Res. 33 (Special Issue 3):211223 Internat. Assoc. Great Lakes Res., 2007  

E-Print Network [OSTI]

, coastal wetlands, Great Lakes. *Corresponding author. E-mail: hower@uwgb.edu 211 #12;212 Price et al

Dorcas, Michael E.

199

Risk assessment of turbine rotor failure using probabilistic ultrasonic non-destructive evaluations  

SciTech Connect (OSTI)

The study presents a method and application of risk assessment methodology for turbine rotor fatigue failure using probabilistic ultrasonic nondestructive evaluations. A rigorous probabilistic modeling for ultrasonic flaw sizing is developed by incorporating the model-assisted probability of detection, and the probability density function (PDF) of the actual flaw size is derived. Two general scenarios, namely the ultrasonic inspection with an identified flaw indication and the ultrasonic inspection without flaw indication, are considered in the derivation. To perform estimations for fatigue reliability and remaining useful life, uncertainties from ultrasonic flaw sizing and fatigue model parameters are systematically included and quantified. The model parameter PDF is estimated using Bayesian parameter estimation and actual fatigue testing data. The overall method is demonstrated using a realistic application of steam turbine rotor, and the risk analysis under given safety criteria is provided to support maintenance planning.

Guan, Xuefei; Zhang, Jingdan; Zhou, S. Kevin [Siemens Corporation, Corporate Technology, 755 College Rd. E., Princeton NJ 08540 (United States); Rasselkorde, El Mahjoub; Abbasi, Waheed A. [Siemens Energy Inc., 841 Old Frankstown Road, Pittsburgh PA 15239 (United States)

2014-02-18T23:59:59.000Z

200

Microwave-emitting rotor, separator apparatus including same, methods of operation and design thereof  

DOE Patents [OSTI]

An apparatus for use in separating, at least in part, a mixture, including at least one chamber and at least one microwave generation device configured for communicating microwave energy into the at least one chamber is disclosed. The rotor assembly may comprise an electric generator for generating electricity for operating the microwave generation device. At least one microwave generation device may be positioned within a tubular interior shaft extending within the rotor assembly. At least a portion of the tubular interior shaft may be substantially transparent to microwave energy. Microwave energy may be emitted in an outward radial direction or toward an anticipated boundary surface defined between a mixture and a separated constituent thereof. A method including flowing a mixture through at least one chamber and communicating microwave energy into the at least one chamber while rotating same is disclosed. Methods of operating a centrifugal separator and design thereof are disclosed.

Meikrantz, David H.

2006-12-19T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

A new 2D FEM analysis of a disc machine with offset rotor  

SciTech Connect (OSTI)

The paper presents a new 2-Dimensional Finite Element Method (2D FEM) analysis of a double sided axial field, permanent magnet excited brushless DC motor. The rotor of the machine is free to move in a direction perpendicular to the axis of the shaft. Computed 2D results are compared with 3D FEM analysis and the new analysis method is shown to give close agreement.

Gair, S.; Canova, A. [Napier Univ., Edinburgh (United Kingdom). Dept. of Electrical, Electronic and Computer Engineering; Eastham, J.F.; Betzer, T. [Univ. of Bath (United Kingdom). School of Electronic and Electrical Engineering

1995-12-31T23:59:59.000Z

202

Rotor dynamic analysis of multi-line systems using the polynomial transfer matrix method  

E-Print Network [OSTI]

forces generated by the working fluid of the machine; squeeze film, elastomeric or active feedback dampers; or machine mounting and attachment flexibility. Of course the results of the analysis are only good if the linearization is a valid approximation...ROTOR DYNAMIC ANALYSIS OF MULTI-LINE SYSTEMS USING THE POLYNOMIAL TRANSFER MATRIX METHOD A Thesis by PAUL JOSEPH TROXLER Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirement...

Troxler, Paul Joseph

1990-01-01T23:59:59.000Z

203

Application of SAFER-PC program to determine turbine rotor boresonic inspection intervals  

SciTech Connect (OSTI)

Public Service Company of Colorado (PSCC) used EPRI`s SAFER-PC Program to evaluate their HP/IP, LP, and generator rotors from Cherokee Station Unit 3, to determine appropriate boresonic re-inspection intervals. The program uses fracture mechanics to calculate critical crack sizes, which could lead to catastrophic failure of the rotors. Conservative stress and fracture mechanics analyses showed negligible fatigue crack growth of assumed bore surface cracks would occur over the proposed inspection interval of eighteen years. The evaluation assumed consistent operational start-up procedures for the inspection interval. If the unit experiences more severe operational procedures, the analysis may not be applicable, with smaller critical crack sizes and accelerated crack growth rates expected. The SAFER-PC analysis resulted in an extension of the previously recommended reinspection interval by eight years. By eliminating just this one inspection, PSCC achieved savings in the range of $100,000. Further savings are anticipated by utilizing the SAFER-PC Program to evaluate these and other PSCC rotors in the future.

Sachse, D.G.; Hellner, R.L.; Dupont, E.J. [Public Service Co., Denver, CO (United States)

1996-12-31T23:59:59.000Z

204

Can quantum fractal fluctuations be observed in an atom-optics kicked rotor experiment?  

E-Print Network [OSTI]

We investigate the parametric fluctuations in the quantum survival probability of an open version of the delta-kicked rotor model in the deep quantum regime. Spectral arguments [Guarneri I and Terraneo M 2001 Phys. Rev. E vol. 65 015203(R)] predict the existence of parametric fractal fluctuations owing to the strong dynamical localisation of the eigenstates of the kicked rotor. We discuss the possibility of observing such dynamically-induced fractality in the quantum survival probability as a function of the kicking period for the atom-optics realisation of the kicked rotor. The influence of the atoms' initial momentum distribution is studied as well as the dependence of the expected fractal dimension on finite-size effects of the experiment, such as finite detection windows and short measurement times. Our results show that clear signatures of fractality could be observed in experiments with cold atoms subjected to periodically flashed optical lattices, which offer an excellent control on interaction times and the initial atomic ensemble.

Andrea Tomadin; Riccardo Mannella; Sandro Wimberger

2005-12-01T23:59:59.000Z

205

Energy and water in the Great Lakes.  

SciTech Connect (OSTI)

The nexus between thermoelectric power production and water use is not uniform across the U.S., but rather differs according to regional physiography, demography, power plant fleet composition, and the transmission network. That is, in some regions water demand for thermoelectric production is relatively small while in other regions it represents the dominate use. The later is the case for the Great Lakes region, which has important implications for the water resources and aquatic ecology of the Great Lakes watershed. This is today, but what about the future? Projected demographic trends, shifting lifestyles, and economic growth coupled with the threat of global climate change and mounting pressure for greater U.S. energy security could have profound effects on the region's energy future. Planning for such an uncertain future is further complicated by the fact that energy and environmental planning and regulatory decisionmaking is largely bifurcated in the region, with environmental and water resource concerns generally taken into account after new energy facilities and technologies have been proposed, or practices are already in place. Based on these confounding needs, the objective of this effort is to develop Great Lakes-specific methods and tools to integrate energy and water resource planning and thereby support the dual goals of smarter energy planning and development, and protection of Great Lakes water resources. Guiding policies for this planning are the Great Lakes and St. Lawrence River Basin Water Resources Compact and the Great Lakes Water Quality Agreement. The desired outcome of integrated energy-water-aquatic resource planning is a more sustainable regional energy mix for the Great Lakes basin ecosystem.

Tidwell, Vincent Carroll

2011-11-01T23:59:59.000Z

206

Terra Nitrogen Company, L.P.: Ammonia Plant Greatly Reduces Natural Gas  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment of Energy TechnicalFlow Room AirNEPA

207

Terra Nitrogen Company, L.P.: Ammonia Plant Greatly Reduces Natural...  

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

Terra Nitrogen Company saved 497,000 MMBtu and 3.5 million yearly after upgrading the steam system in its ammonia plant in Verdigris, Oklahoma. Terra Nitrogen Company, L.P.:...

208

Reduces electric energy consumption  

E-Print Network [OSTI]

BENEFITS · Reduces electric energy consumption · Reduces peak electric demand · Reduces natural gas consumption · Reduces nonhazardous solid waste and wastewater generation · Potential annual savings products for the automotive industry, electrical equipment, and miscellaneous other uses nationwide. ALCOA

209

Great Plains Wind Farm | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place: Golden, COIndiana JumpGray County WindGreatGreat

210

J. Great Lakes Res. 26(4):495505 Internat. Assoc. Great Lakes Res., 2000  

E-Print Network [OSTI]

generated by strong winds. Transport during the storms was almost entirely alongshore, although someJ. Great Lakes Res. 26(4):495­505 Internat. Assoc. Great Lakes Res., 2000 NOTE Sediment. The resuspension is the result of the interaction between high bottom current veloci- ties and surface waves

211

J. Great Lakes Res. 25(4):663682 Internat. Assoc. Great Lakes Res., 1999  

E-Print Network [OSTI]

J. Great Lakes Res. 25(4):663­682 Internat. Assoc. Great Lakes Res., 1999 Anthropogenic Copper of tailings along Lake Superior shorelines and constructed numerous smelters in the watershed. Given the vast- ties? Did copper and associated precious metal mining modify regional fluxes for copper and mercury

212

Great Lakes Environmental Research Laboratory GLERLNATIONALOCEAN  

E-Print Network [OSTI]

Initiative, begun in 1999, has led the nation by successfully converting the laboratory's entire diesel-powered vessel fleet to biofuels and bio-lubricants. This effort produced the first federal vessel to run completely on non-petroleum products. The marine diesel-powered vessels in the Great Lakes are now fueled

213

Ice Cover on the Great Lakes NATIONALOCEANIC  

E-Print Network [OSTI]

. At the base of the foodweb, algae support living organisms in the lakes, including valuable commercial by an incident that occurred in Lake Erie on a warm sunny day in February 2009 when a large ice flow broke awayIce Cover on the Great Lakes NATIONALOCEANIC AND ATMOSPHERIC ADMINISTRATION U.S. D EPARTMENT

214

Conservation Assessment for Great-spurred Violet  

E-Print Network [OSTI]

Conservation Assessment for Great-spurred Violet in the Black Hills National Forest, South Dakota Forest Service Rocky Mountain Region Black Hills National Forest Custer, South Dakota April 2003 #12. Reyher, and Carolyn Hull Sieg J. Hope Hornbeck is a Botanist with the Black Hills National Forest

215

Reducing emissions from deforestation--The ``combined incentives'' mechanism and empirical simulations  

E-Print Network [OSTI]

Reducing emissions from deforestation--The ``combined incentives'' mechanism and empirical throughout a century of climate-change (Gullison et al., 2007). The financial rationale for deforestation be sufficient to greatly reduce deforestation (Stern, 2007). For political and methodological reasons

Vermont, University of

216

american great lakes: Topics by E-print Network  

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

polynorphismsobserved among the North American Great Lakes ciscoes suggest that this fish group has Bernatchez, Louis 2 Great Lakes CiteSeer Summary: Grant realized an...

217

Fueling the Navy's Great Green Fleet with Advanced Biofuels ...  

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

Navy's Great Green Fleet with Advanced Biofuels Fueling the Navy's Great Green Fleet with Advanced Biofuels December 5, 2011 - 5:44pm Addthis Idaho National Laboratory describes...

218

Rotor Design for High Pressure Magic Angle Spinning Nuclear Magnetic Resonance  

SciTech Connect (OSTI)

High pressure magic angle spinning (MAS) nuclear magnetic resonance (NMR) with a sample spinning rate exceeding 2.1 kHz and pressure greater than 165 bar has never been realized. In this work, a new sample cell design is reported, suitable for constructing cells of different sizes. Using a 7.5 mm high pressure MAS rotor as an example, internal pressure as high as 200 bar at a sample spinning rate of 6 kHz is achieved. The new high pressure MAS rotor is re-usable and compatible with most commercial NMR set-ups, exhibiting low 1H and 13C NMR background and offering maximal NMR sensitivity. As an example of its many possible applications, this new capability is applied to determine reaction products associated with the carbonation reaction of a natural mineral, antigorite ((Mg,Fe2+)3Si2O5(OH)4), in contact with liquid water in water-saturated supercritical CO2 (scCO2) at 150 bar and 50 deg C. This mineral is relevant to the deep geologic disposal of CO2, but its iron content results in too many sample spinning sidebands at low spinning rate. Hence, this chemical system is a good case study to demonstrate the utility of the higher sample spinning rates that can be achieved by our new rotor design. We expect this new capability will be useful for exploring solid-state, including interfacial, chemistry at new levels of high-pressure in a wide variety of fields.

Turcu, Romulus V.F.; Hoyt, David W.; Rosso, Kevin M.; Sears, Jesse A.; Loring, John S.; Felmy, Andrew R.; Hu, Jian Z.

2013-01-01T23:59:59.000Z

219

Plating under reduced pressure  

SciTech Connect (OSTI)

Plating under reduced pressure was evaluated for both electroless nickel and electrodeposited copper systems. The objective was to reduce pitting of these coatings thereby further enhancing their usage for diamond turning applications. Cursory experiments with electroless nickel showed reduced porosity when deposition was done at around 500 torr. Detailed experiments with electrodeposited copper at around 100 torr provided similar results. Scanning tunneling microscopy was effectively used to show the improvement in the copper deposits plated under reduced pressure. Benefits included reduced surface roughness and finer and denser grain structure.

Dini, J.W.; Beat, T.G.; Cowden, W.C. (Lawrence Livermore National Lab., CA (United States)); Ryan, L.E.; Hewitt, W.B. (TRW, Inc., Redondo Beach, CA (United States))

1992-06-01T23:59:59.000Z

220

Independent modal space control and modal filters for active vibration control of rotors  

E-Print Network [OSTI]

, as shown in equation (3. 7): ((t) = At(t) + Z(t) (3. 7) where Z is the modal force vector, and is given by: Z(t) = V BQ(t) = Vr M 'Q(t) (3 g) in which the right hand side of the equation results from the fact that only the lower n rows of the B matrix... gg Alan B. Pal o (Chair of Committee) James S. Noel (Member) Richard . Alexander (Member) Walter L. B ley (Head of Department) August 1992 ABSTRACT Independent Modal Space Control and Modal Filters for Active Vibration Control of Rotors...

Roever, Douglas Michael

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Notes 05. Dynamics of a simple rotor-fluid film bearing system  

E-Print Network [OSTI]

geometry RPM_max 10000:= MAXIMUM & design speeds Nmax 50:= # of cases for analysis RPM design 7200:= a 0.2 c?:= Amplitude of imbalance on rotor disk Mechanical energy convected by lubricant. ? 0.8:= Thermal model conditions Heat carry over - thermal mixing... coefficient. ? 0.70:= T supply 50K:= Supply Oil Temperature Take deg-K as deg-C Lubricant properties PROPERTIES OF LUBRICANT MOBIL velocite No 10 (ISO VG 22) ? supply 0.0143 Ns? m 2 ?:= Lubricant viscosity at Tsupply in Pa-sec. ? 0.028 1 K ?:= Alpha...

San Andres, Luis

2009-01-01T23:59:59.000Z

222

An experimental investigation of a tilt rotor aircraft wake in ground effect  

E-Print Network [OSTI]

: Sktlld dS t' 1, "~Et 18, 6 (1975), pp. 51-673. Hunt, J. C. R. , Poulton, E. C. , and Mumford, J. C. , "The Effects of Wldppl:Sd't*l Bd tldt lt*p*' t, "~Bi1di Environment, 11 (1976), pp. 15-28. 50 VITA gichael Louis Frey III was born January 4, 1957...EXPERIMENTAL INVESTIGATION OF A TILT ROTOR AIRCRAFT WAKE IN GROUND EFFECT A Thesis by MICHAEL LOUIS FREY III Submi. tted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER...

Frey, Michael Louis

1982-01-01T23:59:59.000Z

223

Characterizing Inflow Conditions Across the Rotor Disk of a Utility-Scale Wind Turbine (Poster)  

SciTech Connect (OSTI)

Multi-megawatt utility-scale wind turbines operate in a turbulent, thermally-driven atmosphere where wind speed and air temperature vary with height. Turbines convert the wind's momentum into electrical power, and so changes in the atmosphere across the rotor disk influence the power produced by the turbine. To characterize the inflow into utility scale turbines at the National Wind Technology Center (NWTC) near Boulder, Colorado, NREL recently built two 135-meter inflow monitoring towers. This poster introduces the towers and the measurements that are made, showing some of the data obtained in the first few months of operation in 2011.

Clifton, A.; Lundquist, J. K.; Kelley, N.; Scott, G.; Jager, D.; Schreck, S.

2012-01-01T23:59:59.000Z

224

ITC Great Plains, LLC | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Power BasicsGermany:Information IDS Climate ChangeInformationITC Great

225

Great Basin Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio: EnergyGrasslands Renewable Energy LLCGray, Maine:County,Greasy,Great

226

GreatPoint Energy | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio: EnergyGrasslands Renewable Energy LLCGray,BoilingRiver, NewGreatPoint

227

Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo Alto, California 94304 SW 28.1 ROTORS  

E-Print Network [OSTI]

Published by the Centrifuge Instrument Systems Development Center of Beckman Coulter, Inc., Palo and understood before operation or maintenance of this equip- ment is attempted. When you see the symbol on other the performance of the rotors. These rotors were developed, manufactured, and tested for safety and reliability

Pawlowski, Wojtek

228

Abstract--This paper proposes a methodology to decide the optimal matching between the size of the rotor of a wind turbine  

E-Print Network [OSTI]

of the rotor of a wind turbine and the rated power of a permanent magnet synchronous machine. This is made of the wind turbine, the gearbox's transformation ratio, the battery voltage and the wind speed probability's rated power and the wind turbine's rotor size. The system studied in this paper consists of 220 (V)/50

Paris-Sud XI, Université de

229

Geothermal fluid genesis in the Great Basin  

SciTech Connect (OSTI)

Early theories concerning geothermal recharge in the Great Basin implied recharge was by recent precipitation. Physical, chemical, and isotopic differences between thermal and non-thermal fluids and global paleoclimatic indicators suggest that recharge occurred during the late Pleistocene. Polar region isotopic studies demonstrate that a depletion in stable light-isotopes of precipitation existed during the late Pleistocene due to the colder, wetter climate. Isotopic analysis of calcite veins and packrat midden megafossils confirm the depletion event occurred in the Great Basin. Isotopic analysis of non-thermal springs is utilized as a proxy for local recent precipitation. Contoured plots of deuterium concentrations from non-thermal and thermal water show a regional, systematic variation. Subtracting contoured plots of non-thermal water from plots of thermal water reveals that thermal waters on a regional scale are generally isotopically more depleted. Isolated areas where thermal water is more enriched than non-thermal water correspond to locations of pluvial Lakes Lahontan and Bonneville, suggesting isotopically enriched lake water contributed to fluid recharge. These anomalous waters also contain high concentrations of sodium chloride, boron, and other dissolved species suggestive of evaporative enrichment. Carbon-age date and isotopic data from Great Basin thermal waters correlate with the polar paleoclimate studies. Recharge occurred along range bounding faults. 151 refs., 62 figs., 15 tabs.

Flynn, T.; Buchanan, P.K.

1990-01-01T23:59:59.000Z

230

A model for prediction of the damage and effects of explosive projectiles on helicopter composite material rotor blades  

E-Print Network [OSTI]

. The dame, ge is based on a 23-mm HEI-T projectile impacting a fiberglass rotor blade spar. The extent of damage is developed as a function of impact velocity, obliquity of the shotline, location of the impact point, and the time of fuse functioning... Projectiles on Helicopter Composite Material Rotor Blades. (December 1982) Tilden Newton Nikel, B. S. , Texas AAM University; N . S . , Texas A&N University Chairman of Advisory Committee: Dr. Clarence L. Hough Jr. A number of damage models have been...

Mikel, Tilden Newton

1982-01-01T23:59:59.000Z

231

Saving Fuel, Reducing Emissions  

E-Print Network [OSTI]

would in turn lower PHEV fuel costs and make them morestretches from fossil-fuel- powered conventional vehiclesbraking, as do Saving Fuel, Reducing Emissions Making Plug-

Kammen, Daniel M.; Arons, Samuel M.; Lemoine, Derek M.; Hummel, Holmes

2009-01-01T23:59:59.000Z

232

Mass Transfer Testing of a 12.5-cm Rotor Centrifugal Contactor  

SciTech Connect (OSTI)

TRUEX mass transfer tests were performed using a single stage commercially available 12.5 cm centrifugal contactor and stable cerium (Ce) and europium (Eu). Test conditions included throughputs ranging from 2.5 to 15 Lpm and rotor speeds of 1750 and 2250 rpm. Ce and Eu extraction forward distribution coefficients ranged from 13 to 19. The first and second stage strip back distributions were 0.5 to 1.4 and .002 to .004, respectively, throughout the dynamic test conditions studied. Visual carryover of aqueous entrainment in all organic phase samples was estimated at < 0.1 % and organic carryover into all aqueous phase samples was about ten times less. Mass transfer efficiencies of = 98 % for both Ce and Eu in the extraction section were obtained over the entire range of test conditions. The first strip stage mass transfer efficiencies ranged from 75 to 93% trending higher with increasing throughput. Second stage mass transfer was greater than 99% in all cases. Increasing the rotor speed from 1750 to 2250 rpm had no significant effect on efficiency for all throughputs tested.

D. H. Meikrantz; T. G. Garn; J. D. Law; N. R. Mann; T. A. Todd

2008-09-01T23:59:59.000Z

233

Measured and predicted rotor performance for the SERI advanced wind turbine blades  

SciTech Connect (OSTI)

Measured and predicted rotor performance for the SERI advanced wind turbine blades were compared to assess the accuracy of predictions and to identify the sources of error affecting both predictions and measurements. An awareness of these sources of error contributes to improved prediction and measurement methods that will ultimately benefit future rotor design efforts. Propeller/vane anemometers were found to underestimate the wind speed in turbulent environments such as the San Gorgonio Pass wind farm area. Using sonic or cup anemometers, good agreement was achieved between predicted and measured power output for wind speeds up to 8 m/sec. At higher wind speeds an optimistic predicted power output and the occurrence of peak power at wind speeds lower than measurements resulted from the omission of turbulence and yaw error. In addition, accurate two-dimensional (2-D) airfoil data prior to stall and a post stall airfoil data synthesization method that reflects three-dimensional (3-D) effects were found to be essential for accurate performance prediction. 11 refs.

Tangler, J.; Smith, B.; Kelley, N.; Jager, D.

1992-02-01T23:59:59.000Z

234

User's Guide for the NREL Teetering Rotor Analysis Program (STRAP). [National Renewable Energy Laboratory (NREL)  

SciTech Connect (OSTI)

The following report gives the reader an overview of instructions on the proper use of the National Renewable Energy Laboratory (formerly the Solar Energy Research Institute, or SERI) teetering Rotor Analysis Program (STRAP version 2.20). STRAP is a derivative of the Force and Loads Analysis program (FLAP). It is intended as a tool for prediction of rotor and blade loads and response for only two-bladed teetering hub wind turbines. The effects of delta-3, undersling, hub mass, and wind turbulence are accounted for. The objectives of the report are to give an overview of the code and also show the methods of data input and correct code execution steps in order to model an example two-bladed teetering hub turbine. A large portion of the discussion (Sections 6.0, 7.0, and 8.0) is devoted to the subject of inputting and running the code for wind turbulence effects. The ability to include turbulent wind effects is perhaps the biggest change in the code since the release of FLAP version 2.01 in 1988. This report is intended to be a user's guide. It does not contain a theoretical discussion on equations of motion, assumptions, underlying theory, etc. It is intended to be used in conjunction with Wright, Buhl, and Thresher (1988).

Wright, A.D.

1992-08-01T23:59:59.000Z

235

User`s Guide for the NREL Teetering Rotor Analysis Program (STRAP)  

SciTech Connect (OSTI)

The following report gives the reader an overview of instructions on the proper use of the National Renewable Energy Laboratory (formerly the Solar Energy Research Institute, or SERI) teetering Rotor Analysis Program (STRAP version 2.20). STRAP is a derivative of the Force and Loads Analysis program (FLAP). It is intended as a tool for prediction of rotor and blade loads and response for only two-bladed teetering hub wind turbines. The effects of delta-3, undersling, hub mass, and wind turbulence are accounted for. The objectives of the report are to give an overview of the code and also show the methods of data input and correct code execution steps in order to model an example two-bladed teetering hub turbine. A large portion of the discussion (Sections 6.0, 7.0, and 8.0) is devoted to the subject of inputting and running the code for wind turbulence effects. The ability to include turbulent wind effects is perhaps the biggest change in the code since the release of FLAP version 2.01 in 1988. This report is intended to be a user`s guide. It does not contain a theoretical discussion on equations of motion, assumptions, underlying theory, etc. It is intended to be used in conjunction with Wright, Buhl, and Thresher (1988).

Wright, A.D.

1992-08-01T23:59:59.000Z

236

Great Basin Consortium | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdf Flash2006-53.pdf0.pdfCostAnalysisTweet us! | Department ofas a FeedstockGreat Basin

237

Great Energy Debate | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdf Flash2006-53.pdf0.pdfCostAnalysisTweet us! | Department ofas a FeedstockGreat

238

Great Plains Institute | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place: Golden, COIndiana JumpGray County WindGreat

239

Reducible oxide based catalysts  

DOE Patents [OSTI]

A catalyst is disclosed herein. The catalyst includes a reducible oxide support and at least one noble metal fixed on the reducible oxide support. The noble metal(s) is loaded on the support at a substantially constant temperature and pH.

Thompson, Levi T.; Kim, Chang Hwan; Bej, Shyamal K.

2010-04-06T23:59:59.000Z

240

Reducing home lighting expenses  

SciTech Connect (OSTI)

Ways to reduce lighting expenses are summarized. These include: turning off lights when not in use; keeping fixtures and lamps clean; replacing lamps with more efficient types; using three-way bulbs; use of daylighting; buying fewer lamps and reducing lamp wattage; consider repainting rooms; replacing recessed fixtures with tracklighting; and using efficient lamps for outdoor use. (MCW)

Aimone, M.A.

1981-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

An "adiabatic-hindered-rotor" treatment allows para-H2 to be treated as if it were spherical  

E-Print Network [OSTI]

An "adiabatic-hindered-rotor" treatment allows para-H2 to be treated as if it were spherical Hui Li­ molecule interactions, the common assumption that para-H2 may be treated as a spherical particle is often K , it is often considered a good approximation to treat para-H2 as a spherical particle.1

Le Roy, Robert J.

242

Wind turbine rotor blade with in-plane sweep and devices using same, and methods for making same  

DOE Patents [OSTI]

A wind turbine includes a rotor having a hub and at least one blade having a torsionally rigid root, an inboard section, and an outboard section. The inboard section has a forward sweep relative to an elastic axis of the blade and the outboard section has an aft sweep.

Wetzel, Kyle Kristopher (Lawrence, KS)

2008-03-18T23:59:59.000Z

243

Wind turbine rotor blade with in-plane sweep and devices using the same, and methods for making the same  

DOE Patents [OSTI]

A wind turbine includes a rotor having a hub and at least one blade having a torsionally rigid root, an inboard section, and an outboard section. The inboard section has a forward sweep relative to an elastic axis of the blade and the outboard section has an aft sweep.

Wetzel, Kyle Kristopher

2014-06-24T23:59:59.000Z

244

Eliciting a human understandable model of ice adhesion strength for rotor blade leading edge materials from uncertain experimental data  

E-Print Network [OSTI]

Eliciting a human understandable model of ice adhesion strength for rotor blade leading edge: Genetic Fuzzy Systems Fuzzy rule-based classifiers Vague data Isotropic materials Ice-phobic materials Shear adhesion strength a b s t r a c t The published ice adhesion performance data of novel ``ice

Granada, Universidad de

245

Quantum and Classical Superballistic Transport in a Relativistic Kicked-Rotor System  

E-Print Network [OSTI]

As an unusual type of anomalous diffusion behavior, superballistic transport is not well known but has been experimentally simulated recently. Quantum superballistic transport models to date are mainly based on connected sublattices which are constructed to have different properties. In this work, we show that both quantum and classical superballistic transport in the momentum space can occur in a simple periodically driven Hamiltonian system, namely, a relativistic kicked-rotor system with a nonzero mass term. The nonzero mass term essentially realizes a junction-like scenario: regimes with low or high momentum values have different dispersion relations and hence different transport properties. It is further shown that the quantum and classical superballistic transport should occur under much different choices of the system parameters. The results are of interest to studies of anomalous transport, quantum and classical chaos, and the issue of quantum-classical correspondence.

Qifang Zhao; Cord A. Muller; Jiangbin Gong

2014-05-27T23:59:59.000Z

246

Indirect rotor position sensing in real time for brushless permanent magnet motor drives  

SciTech Connect (OSTI)

This paper describes a modern solution to real-time rotor position estimation of brushless permanent magnet (PM) motor drives. The position estimation scheme, based on flux linkage and line-current estimation, is implemented in real time by using the abc reference frame, and it is tested dynamically. The position estimation model of the test motor, development of hardware, and basic operation of the digital signal processor (DSP) are discussed. The overall position estimation strategy is accomplished with a fast DSP (TMS320C30). The method is a shaft position sensorless method that is applicable to a wide range of excitation types in brushless PM motors without any restriction on the motor model and the current excitation. Both rectangular and sinewave-excited brushless PM motor drives are examined, and the results are given to demonstrate the effectiveness of the method with dynamic loads in closed estimated position loop.

Ertugrul, N. [Univ. of Adelaide (Australia). Dept. of Electrical and Electronic Engineering] [Univ. of Adelaide (Australia). Dept. of Electrical and Electronic Engineering; Acarnley, P.P. [Univ. of Newcastle upon Tyne (United Kingdom). Dept. of Electrical and Electronic Engineering] [Univ. of Newcastle upon Tyne (United Kingdom). Dept. of Electrical and Electronic Engineering

1998-07-01T23:59:59.000Z

247

J. Great Lakes Res. 25(2):305317 Internat. Assoc. Great Lakes Res., 1999  

E-Print Network [OSTI]

Contaminants from Ingested Chlamydomonas rheinhardtii and Chlorella vulgaris by Zebra Mussels, Dreissena concentrations from expo- sures to contaminated Chlamydomonas rheinhardtii and Chlorella vulgaris rheinhardtii (Ma 1996) and Chlorella vulgaris (Berg et al. 1996). These species are found in the Great Lakes

248

The Impact of Climate Change on Great Lakes Water Levels Region: Great Lakes  

E-Print Network [OSTI]

. Discuss global warming as an issue to discover what students already know about polar ice cap melting of global warming, due to melting of the polar ice caps. 3. Have students discuss the effects of changes places in the world (such as the Great Lakes region), while at the same time polar melting is occurring

249

J. Great Lakes Res. 33:722735 Internat. Assoc. Great Lakes Res., 2007  

E-Print Network [OSTI]

Great Lakes, with their vast nat- ural resources, contribute significantly to the eco- nomic 1992), as well as the hy- dropower industry (Assel et al. 1983), and shipping industry (Cooper et al for icebreaking operations and the most hazardous for ship navigation, can be uniquely identified by co

250

NOAA Technical Memorandum GLERL-135 Great Lakes Ice Cover Climatology  

E-Print Network [OSTI]

____________________________________________________________________________ Great Lakes Ice Cover Climatology Update: Winters 2003, 2004, and 2005 Raymond A. Assel NOAA, Great..................................................................................................6 DATES OF FIRST (LAST) ICE AND ICE DURATION. .............................................................7 SEASONAL PROGRESSION OF ICE COVER

251

Great Lakes Water Scarcity and Regional Economic Development  

ScienceCinema (OSTI)

Great Lakes Water Scarcity and Regional Economic Development panel at Northwestern University on 10/10/2012

Cameron Davis; Tim Eder; David Ulrich; David Naftzger; Donald J. Wuebbles; Mark C. Petri

2013-06-06T23:59:59.000Z

252

Great Lakes Water Scarcity and Regional Economic Development  

SciTech Connect (OSTI)

Great Lakes Water Scarcity and Regional Economic Development panel at Northwestern University on 10/10/2012

Cameron Davis; Tim Eder; David Ulrich; David Naftzger; Donald J. Wuebbles; Mark C. Petri

2012-10-10T23:59:59.000Z

253

Canada Lynx in the Great Lakes Region 2004 Annual Report  

E-Print Network [OSTI]

Canada Lynx in the Great Lakes Region 2004 Annual Report to USDA Forest Service and MN Cooperative. #12;Canada Lynx in the Great Lakes Region 2004 Annual Report ii Executive Summary We summarize the second year of a project on the Canada lynx ecology in the Great Lakes region. The project is designed

Minnesota, University of

254

Developing a Great Lakes remote sensing community Marie C. Colton  

E-Print Network [OSTI]

in the West Basin area of Lake Erie (Lekki et al., 2009). Satellite synthetic aperture radar imagery fromCommentary Developing a Great Lakes remote sensing community Marie C. Colton NOAA Great Lakes Introduction Observational data collection of the Laurentian Great Lakes has ad- vanced during the past decade

255

book reviews Climate Changeon the Great Lakes Basin. 1992.  

E-Print Network [OSTI]

,personal communication). The second paper, "Effects of Climate Change on the Water Resources of the Great is a compilation of five papers presented at the Symposium of Climate Change on the Great Lakes Basin held as part- ested in learning more a out climate change issues andstudiesintheGreatL kesisadvisedtoconsultthe

256

Great Plains Wind Energy Transmission Development Project  

SciTech Connect (OSTI)

In fiscal year 2005, the Energy & Environmental Research Center (EERC) received funding from the U.S. Department of Energy (DOE) to undertake a broad array of tasks to either directly or indirectly address the barriers that faced much of the Great Plains states and their efforts to produce and transmit wind energy at the time. This program, entitled Great Plains Wind Energy Transmission Development Project, was focused on the central goal of stimulating wind energy development through expansion of new transmission capacity or development of new wind energy capacity through alternative market development. The original task structure was as follows: Task 1 - Regional Renewable Credit Tracking System (later rescoped to Small Wind Turbine Training Center); Task 2 - Multistate Transmission Collaborative; Task 3 - Wind Energy Forecasting System; and Task 4 - Analysis of the Long-Term Role of Hydrogen in the Region. As carried out, Task 1 involved the creation of the Small Wind Turbine Training Center (SWTTC). The SWTTC, located Grand Forks, North Dakota, consists of a single wind turbine, the Endurance S-250, on a 105-foot tilt-up guyed tower. The S-250 is connected to the electrical grid on the 'load side' of the electric meter, and the power produced by the wind turbine is consumed locally on the property. Establishment of the SWTTC will allow EERC personnel to provide educational opportunities to a wide range of participants, including grade school through college-level students and the general public. In addition, the facility will allow the EERC to provide technical training workshops related to the installation, operation, and maintenance of small wind turbines. In addition, under Task 1, the EERC hosted two small wind turbine workshops on May 18, 2010, and March 8, 2011, at the EERC in Grand Forks, North Dakota. Task 2 involved the EERC cosponsoring and aiding in the planning of three transmission workshops in the midwest and western regions. Under Task 3, the EERC, in collaboration with Meridian Environmental Services, developed and demonstrated the efficacy of a wind energy forecasting system for use in scheduling energy output from wind farms for a regional electrical generation and transmission utility. With the increased interest at the time of project award in the production of hydrogen as a critical future energy source, many viewed hydrogen produced from wind-generated electricity as an attractive option. In addition, many of the hydrogen production-related concepts involve utilization of energy resources without the need for additional electrical transmission. For this reason, under Task 4, the EERC provided a summary of end uses for hydrogen in the region and focused on one end product in particular (fertilizer), including several process options and related economic analyses.

Brad G. Stevens, P.E.; Troy K. Simonsen; Kerryanne M. Leroux

2012-06-09T23:59:59.000Z

257

Tank closure reducing grout  

SciTech Connect (OSTI)

A reducing grout has been developed for closing high level waste tanks at the Savannah River Site in Aiken, South Carolina. The grout has a low redox potential, which minimizes the mobility of Sr{sup 90}, the radionuclide with the highest dose potential after closure. The grout also has a high pH which reduces the solubility of the plutonium isotopes. The grout has a high compressive strength and low permeability, which enhances its ability to limit the migration of contaminants after closure. The grout was designed and tested by Construction Technology Laboratories, Inc. Placement methods were developed by the Savannah River Site personnel.

Caldwell, T.B.

1997-04-18T23:59:59.000Z

258

Reducing Facet Nucleation during Algorithmic Self-Assembly  

E-Print Network [OSTI]

Reducing Facet Nucleation during Algorithmic Self-Assembly Ho-Lin Chen,, Rebecca Schulman,,§ Ashish; Revised Manuscript Received July 3, 2007 ABSTRACT Algorithmic self-assembly, a generalization of crystal. Molecular self-assembly is an emerging technology that will ultimately enable the fabrication of great

Goel, Ashish

259

Increasing efficiency, reducing emissions with hydrous ethanol in diesel engines  

E-Print Network [OSTI]

Increasing efficiency, reducing emissions with hydrous ethanol in diesel engines Ethanol continuedOber 2013 Catalystcts.umn.edu Nearly all corn-based ethanol produced in the United States is anhydrous processes required to remove the water from ethanol consume a great deal of energy. Researchers from

Minnesota, University of

260

Rotor reference frame models of a multiloop 2-phase motor drive in brushless DC and microstepping modes  

SciTech Connect (OSTI)

This paper describes non-linear models of a 2-phase permanent magnet synchronous motor drive in brushless DC and microstepping modes. The models account for everything from the main power bus up to and including the mechanical load and velocity feedback loop. In particular, the models include the power electronics for each phase complete with their internal feedback loops. Classical state space averaged power electronics models are transformed to the rotor reference frame along with the usual electromechanical variables. Since SPICE linearizes the rotor reference frame model about shaft velocity, instead of shaft angle, frequency domain methods apply. The frequency domain analysis detects unstable interactions between torque angle and deliberate feedback within the drives. Time domain simulations using stator reference frame models confirm the results. All models are SPICE-compatible but were developed on Cadence`s Analog Workbench.

Chen, J.E. [Lockheed Missiles and Space Co. Inc., Sunnyvale, CA (United States)

1995-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Naval electrochemical corrosion reducer  

DOE Patents [OSTI]

A corrosion reducer for use with ships having a hull, a propeller mounted a propeller shaft and extending through the hull, bearings supporting the shaft, at least one thrust bearing and one seal. The improvement includes a current collector and a current reduction assembly for reducing the voltage between the hull and shaft in order to reduce corrosion due to electrolytic action. The current reduction assembly includes an electrical contact, the current collector, and the hull. The current reduction assembly further includes a device for sensing and measuring the voltage between the hull and the shaft and a device for applying a reverse voltage between the hull and the shaft so that the resulting voltage differential is from 0 to 0.05 volts. The current reduction assembly further includes a differential amplifier having a voltage differential between the hull and the shaft. The current reduction assembly further includes an amplifier and a power output circuit receiving signals from the differential amplifier and being supplied by at least one current supply. The current selector includes a brush assembly in contact with a slip ring over the shaft so that its potential may be applied to the differential amplifier.

Clark, Howard L. (Ballston Lake, NY)

1991-10-01T23:59:59.000Z

262

A tilt rotor UAV for long endurance operations in remote environments  

E-Print Network [OSTI]

Extended mission times will greatly expand the utility of small UAVs that are currently limited to a single flight lasting no more than a few hours. This thesis assesses the challenges to developing a small, long endurance ...

VanderMey, Josiah T

2011-01-01T23:59:59.000Z

263

Aluminum nitride transitional layer for reducing dislocation density and cracking of AIGan epitaxial films  

DOE Patents [OSTI]

A denticulated Group III nitride structure that is useful for growing Al.sub.xGa.sub.1-xN to greater thicknesses without cracking and with a greatly reduced threading dislocation (TD) density.

Allerman, Andrew A. (Tijeras, NM); Crawford, Mary H. (Albuquerque, NM); Koleske, Daniel D. (Albuquerque, NM); Lee, Stephen R. (Albuquerque, NM)

2011-03-29T23:59:59.000Z

264

Reducing Power Factor Cost  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L dDepartmentnews-flashes Office ofof EnergyReducing Peak DemandLow

265

Evaluation of Manufacturability of Embedded Sensors and Controls with Canned Rotor Pump System  

SciTech Connect (OSTI)

This report documents the current status of fabrication and assembly planning for the magnetic bearing, canned rotor pump being used as a demonstration platform for deeply integrating I&C into nuclear power plant components. The report identifies material choices and fabrication sequences for all of the required parts and the issues that need to be either resolved or accommodated during the manufacturing process. Down selection between material options has not yet been performed. Potential suppliers for all of the necessary materials have also been identified. The assembly evaluation begins by logically subdividing the pump into modules, which are themselves decomposed into individual parts. Potential materials and fabrication processes for each part in turn are then evaluated. The evaluation process includes assessment of the environmental compatibility requirements and the tolerances available for the selected fabrication processes. A description of the pump power/control electronics is also provided. The report also includes exploded views of the modules that show the integration of the various parts into modules that are then assembled to form the pump. Emphasis has been placed on thermal environment compatibility and the part dimensional changes during heat-up. No insurmountable fabrication or assembly challenges have been identified.

Kisner, Roger A [ORNL; Fugate, David L [ORNL; Melin, Alexander M [ORNL; Holcomb, David Eugene [ORNL; Wilson, Dane F [ORNL; Silva, Pamela C [ORNL; Cruz Molina, Carola [ORNL

2013-07-01T23:59:59.000Z

266

Prediction of stochastic blade loads for three-bladed, rigid-hub rotors  

SciTech Connect (OSTI)

Accurately predicting wind turbine blade loads and response is important for the design of future wind turbines. The need to include turbulent wind inputs in structural dynamics models is widely recognized. In this paper, the Force and Loads Analysis Program (FLAP) code will be used to predict turbulence-induced bending moments for the SERI Combined Experiment rotor blade and the Howden 330-kW blade. FLAP code predictions will be compared to the power spectra of measured blade-bending moments. Two methods will be used to generate turbulent wind inputs to FLAP: a theoretical simulation: the Pacific Northwest Laboratories (PNL) simulation theory; and measured wind-speed data taken from an array of anemometers upwind of the turbine. Turbulent wind-speed time series are input to FLAP for both methods outlined above. Power spectra of predicted flap-bending moments are compared to measured results for different wind conditions. Conclusions are also drawn as to the ability of the turbulence simulation models to provide accurate wind input to FLAP and to FLAP's ability to accurately simulate blade response to turbulence. Finally, suggestions are made as to needed improvements in the theoretical model. 11 refs., 8 figs.

Wright, A.D.; Weber, T.L.; Thresher, R.W.; Butterfield, C.P.

1989-11-01T23:59:59.000Z

267

Lithium In Tufas Of The Great Basin- Exploration Implications...  

Open Energy Info (EERE)

Tufas Of The Great Basin- Exploration Implications For Geothermal Energy And Lithium Resources Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper:...

268

2014 Student Poster Session marks the conclusion of another great...  

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

2014 Student Poster Session marks the conclusion of another great program September 2, 2014 As the 2014 summer student program ends, students have the opportunity to show the...

269

Stantec Investigates Bat Activity in Atlantic and Great Lakes...  

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

Maine, Great Lakes, and Mid-Atlantic coastal states regions to inform efforts to mitigate potential impacts associated with offshore wind energy development in these regions....

270

Pressure reducing regulator  

DOE Patents [OSTI]

A pressure reducing regulator that controls its downstream or outlet pressure to a fixed fraction of its upstream or inlet pressure. The regulator includes a housing which may be of a titanium alloy, within which is located a seal or gasket at the outlet end which may be made of annealed copper, a rod, and piston, each of which may be made of high density graphite. The regulator is insensitive to temperature by virtue of being without a spring or gas sealed behind a diaphragm, and provides a reference for a system in which it is being used. The rod and piston of the regulator are constructed, for example, to have a 1/20 ratio such that when the downstream pressure is less than 1/20 of the upstream pressure the regulator opens and when the downstream pressure exceeds 1/20 of the upstream pressure the regulator closes.

Whitehead, John C. (Davis, CA); Dilgard, Lemoyne W. (Willits, CA)

1995-01-01T23:59:59.000Z

271

Magnetic refrigeration, based on the magnetocaloric ef-fect, has great promise for domestic and industrial use and is at-  

E-Print Network [OSTI]

energy consumption. Furthermore, it would reduce the use of greenhouse-effect gases the industrial development of the materials, McPHy Energy for powder treatments, and Cooltech ApplicationsMagnetic refrigeration, based on the magnetocaloric ef- fect, has great promise for domestic

Canet, Léonie

272

Science and innovation strategy for forestry in Great Britain  

E-Print Network [OSTI]

Science and innovation strategy for forestry in Great Britain #12;The cover image is derived from X-rays of juniper berries (Juniperus communis), some containing seeds. #12;Science and innovation strategy COMMISSION (2014). Science and innovation strategy for forestry in Great Britain. Forestry Commission

273

GREAT LAKES ICE COVER RaymondA. Asset'  

E-Print Network [OSTI]

hydropower production and cooling water intakes, and damaging shore structures. Ice cover also impactsChapter 6 GREAT LAKES ICE COVER RaymondA. Asset' ABSTRACT: Theformation of ice on the Lallrentian (~rthe Great Lakes anel local weather and climate. The (I1Inllal seasonal and ~'Patialprogression of ice

274

INTRODUCTION Optical sensors have long been used in the Great  

E-Print Network [OSTI]

INTRODUCTION Optical sensors have long been used in the Great Lakes to track changes and Haw- ley 1998, Hawley and Lee 1999, for example), but the use of acoustic sensors for this purpose Concentrations Measured by Acoustic and Optical Sensors Nathan Hawley* Great Lakes Environmental Research

275

Alfalfa Production Guide for the Southern Great Plains  

E-Print Network [OSTI]

Alfalfa Production Guide for the Southern Great Plains Foreward Table of Contents Acknowledgment This circular, Alfalfa Production Guide for the Southern Great Plains (E-826), is available online in PDF of Agricultural Sciences and Natural Resources Oklahoma State University Stillwater, Oklahoma #12;Alfalfa

Mukhtar, Saqib

276

Great Lakes Hydrometeorological Station Directory Database and Internet Web Development  

E-Print Network [OSTI]

Great Lakes Hydrometeorological Station Directory Database and Internet Web Development Primary Investigator: Thomas Croley - NOAA GLERL (Emeritus) This project was completed in 2001 Overview A new directory in hydrometeorological data availability with in the Great Lakes. The new directory will consist of an updated database

277

DESIGN OF THE GREAT LAKES OBSERVING SYSTEM ENTERPRISE ARCHITECTURE  

E-Print Network [OSTI]

DESIGN OF THE GREAT LAKES OBSERVING SYSTEM ENTERPRISE ARCHITECTURE T.J. Dekker1 , J.V. DePinto1 , S: tdekker@limno.com 2 NOAA Great Lakes Environmental Research Lab, Ann Arbor, Michigan, USA, email: steve, collaborative, and consensus-based enterprise architecture design process was conducted under the direction

278

GREAT LAKES COASTAL WETLANDS MONITORING AND ASSESSMENT TECHNIQUES  

E-Print Network [OSTI]

GREAT LAKES COASTAL WETLANDS MONITORING AND ASSESSMENT TECHNIQUES By KRISTINA KOSTUK, B OF SCIENCE (2006) McMaster University (Biology) Hamilton, Ontario TITLE: Great Lakes Coastal Wetlands coastal wetlands. The first chapter examines the influence of gear type and sampling protocol on fish

McMaster University

279

Stewarding a Reduced Stockpile  

SciTech Connect (OSTI)

The future of the US nuclear arsenal continues to be guided by two distinct drivers: the preservation of world peace and the prevention of further proliferation through our extended deterrent umbrella. Timely implementation of US nuclear policy decisions depends, in part, on the current state of stockpile weapons, their delivery systems, and the supporting infrastructure within the Department of Defense (DoD) and the Department of Energy's National Nuclear Security Administration (NNSA). In turn, the present is a product of past choices and world events. Now more than ever, the nuclear weapons program must respond to the changing global security environment and to increasing budget pressures with innovation and sound investments. As the nation transitions to a reduced stockpile, the successes of the Stockpile Stewardship Program (SSP) present options to transition to a sustainable complex better suited to stockpile size, national strategic goals and budgetary realities. Under any stockpile size, we must maintain essential human capital, forefront capabilities, and have a right-sized effective production capacity. We present new concepts for maintaining high confidence at low stockpile numbers and to effectively eliminate the reserve weapons within an optimized complex. We, as a nation, have choices to make on how we will achieve a credible 21st century deterrent.

Goodwin, B T; Mara, G

2008-04-18T23:59:59.000Z

280

All Other Retired Employees Great-West Life is a leading Canadian life and health insurer. Great-West Life's  

E-Print Network [OSTI]

to you and your family. The Plan is underwritten by #12;Protecting Your Personal Information At Great as life, disability and critical illness insurance for individuals and families. As a leading providerAll Other Retired Employees #12;Great-West Life is a leading Canadian life and health insurer

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Apparatus and methods for aligning holes through wheels and spacers and stacking the wheels and spacers to form a turbine rotor  

DOE Patents [OSTI]

A gas turbine rotor stacking fixture includes upstanding bolts for reception in aligned bolt holes in superposed aft disk, wheels and spacers and upstanding alignment rods received in openings of the disk, wheels and spacers during the rotor stacking assembly. The axially registering openings enable insertion of thin-walled tubes circumferentially about the rim of the rotor, with tight tolerances to the openings to provide supply and return steam for cooling buckets. The alignment rods have radial dimensions substantially less than their dimensions in a circumferential direction to allow for radial opening misalignment due to thermal expansion, tolerance stack-up and wheel-to-spacer mismatch due to rabbet mechanical growth. The circumferential dimension of the alignment rods affords tightly toleranced alignment of the openings through which the cooling tubes are installed.

Berry, Robert Randolph (Greenville, SC); Palmer, Gene David (Clifton Park, NY); Wilson, Ian David (Clifton Park, NY)

2000-01-01T23:59:59.000Z

282

What Polarized Country? Clean Energy -The Great Convener  

E-Print Network [OSTI]

What Polarized Country? Clean Energy - The Great Convener Tuesday, October 2, 2012 11:30 a.m. - 1, vast agreement that we should champion clean energy and energy efficiency. Join us for an engaging

Hall, Sharon J.

283

Regional Gravity Survey of the Northern Great Salt Lake Desert...  

Open Energy Info (EERE)

navigation, search OpenEI Reference LibraryAdd to library Journal Article: Regional Gravity Survey of the Northern Great Salt Lake Desert and Adjacent Areas in Utah, Nevada, and...

284

Colorado's Economic Recovery since the Great Recession Professor Martin Shields  

E-Print Network [OSTI]

1 Colorado's Economic Recovery since the Great Recession Professor Martin Shields Regional Economics Institute Colorado State University csurei, economic performance has been mixed. The northern Front Range has fared best

285

Thomas Carlyle and the making of Frederick the Great  

E-Print Network [OSTI]

Thomas Carlyles History of Friedrich II. of Prussia, called Frederick the Great was published in six volumes between 1858 and 1865 and was his last major work. Carlyle had a specific purpose in mind when he began writing ...

Stewart, Linda Clark

2010-06-30T23:59:59.000Z

286

EIS-0106: Great Falls-Conrad Transmission Line Project, Montana  

Broader source: Energy.gov [DOE]

The Western Area Power Administration prepared this EIS to evaluate the environmental impacts of the construction and operation of a 230-kilovolt transmission line from Great Falls, Montana, to Conrad, Montana.

287

Recommendations for reducing ambiguity in written procedures.  

SciTech Connect (OSTI)

Previous studies in the nuclear weapons complex have shown that ambiguous work instructions (WIs) and operating procedures (OPs) can lead to human error, which is a major cause for concern. This report outlines some of the sources of ambiguity in written English and describes three recommendations for reducing ambiguity in WIs and OPs. The recommendations are based on commonly used research techniques in the fields of linguistics and cognitive psychology. The first recommendation is to gather empirical data that can be used to improve the recommended word lists that are provided to technical writers. The second recommendation is to have a review in which new WIs and OPs and checked for ambiguities and clarity. The third recommendation is to use self-paced reading time studies to identify any remaining ambiguities before the new WIs and OPs are put into use. If these three steps are followed for new WIs and OPs, the likelihood of human errors related to ambiguity could be greatly reduced.

Matzen, Laura E.

2009-11-01T23:59:59.000Z

288

Aluminum nitride transitional layer for reducing dislocation density and cracking of AlGaN epitaxial films  

DOE Patents [OSTI]

A denticulated Group III nitride structure that is useful for growing Al.sub.xGa.sub.1-xN to greater thicknesses without cracking and with a greatly reduced threading dislocation (TD) density.

Allerman, Andrew A.; Crawford, Mary H.; Lee, Stephen R.

2013-01-08T23:59:59.000Z

289

Reduced-dimension transistors: Reduced-dimension transistors  

E-Print Network [OSTI]

1 Reduced-dimension transistors: the HEMT LECTURE 20 · Reduced-dimension transistors · HEMT · 2-D;8 For a finite well · Wavefunction not completely confined · Use undoped spacer #12;9 Employment of a spacer scattering (µ ). · Electrons and donors separated no I I scattering, i.e., µ · Undoped spacer also helps

Pulfrey, David L.

290

Oxygen-reducing catalyst layer  

DOE Patents [OSTI]

An oxygen-reducing catalyst layer, and a method of making the oxygen-reducing catalyst layer, where the oxygen-reducing catalyst layer includes a catalytic material film disposed on a substrate with the use of physical vapor deposition and thermal treatment. The catalytic material film includes a transition metal that is substantially free of platinum. At least one of the physical vapor deposition and the thermal treatment is performed in a processing environment comprising a nitrogen-containing gas.

O'Brien, Dennis P. (Maplewood, MN); Schmoeckel, Alison K. (Stillwater, MN); Vernstrom, George D. (Cottage Grove, MN); Atanasoski, Radoslav (Edina, MN); Wood, Thomas E. (Stillwater, MN); Yang, Ruizhi (Halifax, CA); Easton, E. Bradley (Halifax, CA); Dahn, Jeffrey R. (Hubley, CA); O'Neill, David G. (Lake Elmo, MN)

2011-03-22T23:59:59.000Z

291

Real-time Stereo Visual Servoing Control of an UAV having Eight-Rotors Sergio Salazar, Hugo Romero, Jose Gomez and Rogelio Lozano  

E-Print Network [OSTI]

Real-time Stereo Visual Servoing Control of an UAV having Eight-Rotors Sergio Salazar, Hugo Romero UAV using image-based visual servoing with stereo vision. In order to control the orientation vision system we are able to estimate the UAV 3D position, while from the inertial sensors we can obtain

Paris-Sud XI, Université de

292

Turbine blade platform film cooling with simulated stator-rotor purge flow with varied seal width and upstream wake with vortex  

E-Print Network [OSTI]

. The coolant was injected through an advanced labyrinth seal to simulate purge flow through a stator-rotor seal. The width of the opening of this seal was varied to simulate the effect of misalignment. Stationary rods were placed upstream of the cascade in four...

Blake, Sarah Anne

2009-05-15T23:59:59.000Z

293

Analyse numrique qualitative d'interactions rotor/stator dans un compresseur haute pression d'un moteur d'hlicoptre  

E-Print Network [OSTI]

are carried out on the centrifugal compressor of a modern heli- copter engine, for which it is assumed méthodologie systématique d'analyse. Les simulations d'interaction sont réalisées sur un compresseur centrifuge-harmoniques du chargement imposé. A qualitative numerical analysis of rotor-casing interactions in centrifugal

Paris-Sud XI, Université de

294

Preliminary Structural Design Conceptualization for Composite Rotor for Verdant Power Water Current: Cooperative Research and Development Final Report, CRADA Number CRD-08-296  

SciTech Connect (OSTI)

The primary thrust of the CRADA will be to develop a new rotor design that will allow higher current flows (>4m/s), greater swept area (6-11m), and in the process, will maximize performance and energy capture.

Hughes, S.

2011-02-01T23:59:59.000Z

295

Canada Lynx in the Great Lakes Region 2003 Annual Report  

E-Print Network [OSTI]

Canada Lynx in the Great Lakes Region 2003 Annual Report to USDA Forest Service and MN Cooperative-01 #12;Canada Lynx Annual Report ii of 33 ii In this report we summarize accomplishments of the Canada Forest to address 4 major questions about this population of Canada lynx: location, distribution

Minnesota, University of

296

How extensive are the impacts of nitrogen pollution in Great  

E-Print Network [OSTI]

How extensive are the impacts of nitrogen pollution in Great Britain's forests? Protecting our forests from pollutant deposition is and has been a topical issue for some time. Nitrogen, as well as being an essential nutrient for trees, is one of the most important of these pollutants. This article

297

Genetic analysis of dilated cardiomyopathy in the great dane  

E-Print Network [OSTI]

that are involved in the sarcomere or cytoskeletal components, leading to problems with contraction or cardiac cell integrity. In order to identify causative or susceptibility genes for DCM in the Great Dane, a whole-genome linkage screen was conducted in a family...

Herbst, Stephanie Michelle

2009-05-15T23:59:59.000Z

298

Changing Weather and Climate in the Great Lakes Region Webinar  

Broader source: Energy.gov [DOE]

Offered by the University of Wisconsin-Madison through Coursera, this four-week course will feature a new season each week through short lectures and activities covering Great Lakes weather, observed changes in the climate, and societal impacts of climate change.

299

Polybrominated Diphenyl Ethers in the Sediments of the Great Lakes.  

E-Print Network [OSTI]

source of many pollutants, including PCBs and dioxins, to the Great Lakes. This has been particularly analysis demonstrated that the pattern of PBDEs in Lake Superior sediments differs from those in air from the point sources. Sediments are an important sink and reservoir of per- sistent pollutants

Rockne, Karl J.

300

ORIGINAL PAPER Geochemical Evolution of Great Salt Lake, Utah, USA  

E-Print Network [OSTI]

Discipline, US Geological Survey, 2329 Orton Circle, Salt Lake City, UT 84119, USA R. J. Spencer GeoscienceORIGINAL PAPER Geochemical Evolution of Great Salt Lake, Utah, USA Blair F. Jones ? David L. Naftz ? Ronald J. Spencer ? Charles G. Oviatt Received: 13 June 2008 / Accepted: 10 November 2008

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Coupling Quantitative Precipitation Estimate and Great Lakes Hydrologic Models  

E-Print Network [OSTI]

Rationale The ability to provide accurate runoff estimates not only impacts forecasting of the water levels of the Seaway, but can help business such as commercial shippers, marinas, and hydropower and nuclear plants environment, the Great Lakes basin, and GLERL will improve its LBRM to hourly computations and its AHPS

302

A Computer Tutorial for Great Lakes Ice Cover Climatology  

E-Print Network [OSTI]

A Computer Tutorial for Great Lakes Ice Cover Climatology R.A. ASSELL U.S. Department of Commerce tutorial was developed to provide an overview of the annual ~ r e a fLakes ice cycle. The tutorial includes an animation to aid in visualizing the normal seasonal progression and the spatial patterns of ice cover

303

Regional Slip Tendency Analysis of the Great Basin Region  

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

- The resulting along?fault and fault?to?fault variation in slip or dilation potential is a proxy for along fault and fault?to?fault variation in fluid flow conduit potential. Stress Magnitudes and directions were calculated across the entire Great Basin. Stress field variation within each focus area was approximated based on regional published data and the world stress database (Hickman et al., 2000; Hickman et al., 1998 Robertson?Tait et al., 2004; Hickman and Davatzes, 2010; Davatzes and Hickman, 2006; Blake and Davatzes 2011; Blake and Davatzes, 2012; Moeck et al., 2010; Moos and Ronne, 2010 and Reinecker et al., 2005). The minimum horizontal stress direction (Shmin) was contoured, and spatial bins with common Shmin directions were calculated. Based on this technique, we subdivided the Great Basin into nine regions (Shmin <070, 070140). Slip and dilation tendency were calculated using 3DStress for the faults within each region using the mean Shmin for the region. Shmin variation throughout Great Basin are shown on Figure 3. For faults within the Great Basin proper, we applied a normal faulting stress regime, where the vertical stress (sv) is larger than the maximum horizontal stress (shmax), which is larger than the minimum horizontal stress (sv>shmax>shmin). Based on visual inspection of the limited stress magnitude data in the Great Basin, we used magnitudes such that shmin/shmax = .527 and shmin/sv= .46. These values are consistent with stress magnitude data at both Dixie Valley (Hickman et al., 2000) and Yucca Mountain (Stock et al., 1985). For faults within the Walker Lane/Eastern California Shear Zone, we applied a strike?slip faulting stress, where shmax > sv > shmin. Upon visual inspection of limited stress magnitude data from the Walker Lane and Eastern California Shear zone, we chose values such that SHmin/SHmax = .46 and Shmin/Sv= .527 representative of the region. Results: The results of our slip and dilation tendency analysis are shown in Figures 4 (dilation tendency), 5 (slip tendency) and 6 (slip tendency + dilation tendency). Shmin varies from northwest to east?west trending throughout much of the Great Basin. As such, north? to northeast?striking faults have the highest tendency to slip and to dilate, depending on the local trend of shmin. These results provide a first order filter on faults and fault systems in the Great Basin, affording focusing of local?scale exploration efforts for blind or hidden geothermal resources.

Faulds, James E.

304

Reduced shedding regenerator and method  

DOE Patents [OSTI]

A reduced shedding regenerator and method are disclosed with regenerator surfaces to minimize shedding of particles from the regenerator thereby alleviating a source of potential damage and malfunction of a thermal regenerative machine using the regenerator.

Qiu, Songgang (Richland, WA); Augenblick, John E. (Richland, WA); Erbeznik, Raymond M. (Kennewick, WA)

2007-05-22T23:59:59.000Z

305

FACULTY and LIBRARIANS Great-West Life is a leading Canadian life and health insurer. Great-West Life's  

E-Print Network [OSTI]

, disability and critical illness insurance for individuals and families. As a leading provider of employee. This booklet contains important information and should be kept in a safe place known to you and your family. The Plan is underwritten by 10-11 #12;Protecting Your Personal Information At Great-West Life, we recognize

306

Application to Export Electric Energy OE Docket No. EA-389 Great...  

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

Applicaiton from Great Bay Energy to export electric energy to Canada. Federal Register Notice. EA-389 Great Bay Energy (CN).pdf More Documents & Publications Application to Export...

307

National Parks Move Transportation Forward in America's Great...  

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

the country are using alternative fuels and advanced vehicle technologies to reduce air pollution and lower fuel costs. Building on the success of its existing National Park...

308

Wind energy resource atlas. Volume 3. Great Lakes Region  

SciTech Connect (OSTI)

The Great Lakes Region atlas assimilates six collections of wind resource data, one for the region and one for each of the five states that compose the Great Lakes region: Illinois, Indiana, Michigan, Ohio, Wisconsin. At the state level, features of the climate, topography, and wind resource are discussed in greater detail than in the regional discussion and the data locations on which the assessment is based are mapped. Variations over several time scales in the wind resource at selected stations in each state are shown on graphs of monthly average and interannual wind speed and power, and of hourly average wind speed for each season. Other graphs present speed, direction, and duration frequencies of the wind at these locations.

Paton, D.L.; Bass, A.; Smith, D.G.; Elliott, D.L.; Barchet, W.R.; George, R.L.

1981-02-01T23:59:59.000Z

309

Interactive Maps from the Great Basin Center for Geothermal Energy  

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

The Great Basin Center for Geothermal Energy, part of the University of Nevada, Reno, conducts research towards the establishment of geothermal energy as an economically viable energy source within the Great Basin. The Center specializes in collecting and synthesizing geologic, geochemical, geodetic, geophysical, and tectonic data, and using Geographic Information System (GIS) technology to view and analyze this data and to produce favorability maps of geothermal potential. The interactive maps are built with layers of spatial data that are also available as direct file downloads (see DDE00299). The maps allow analysis of these many layers, with various data sets turned on or off, for determining potential areas that would be favorable for geothermal drilling or other activity. They provide information on current exploration projects and leases, Bureau of Land Management land status, and map presentation of each type of scientific spatial data: geothermal, geophysical, geologic, geodetic, groundwater, and geochemical.

310

EIS-0408: Upper Great Plains Wind Energy Programmatic EIS  

Broader source: Energy.gov [DOE]

This EIS, being prepared jointly by DOE's Western Area Power Administration and the Department of the Interiors Fish and Wildlife Service, will evaluate the environmental impacts of wind energy development in Iowa, Minnesota, Montana, Nebraska, North Dakota, and South Dakota Westerns Upper Great Plains customer service region. Western will use the EIS to implement a comprehensive regional program to manage interconnection requests for wind energy projects.

311

North Great River, New York: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoading map...(Utility Company) Jump to:City)Norristown,BraddockDruid Hills,Fair(RedirectedGreat

312

JW Great Lakes Wind LLC | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpen EnergyBoard"StartingInteruniversityIwasaki ElectricJW Great

313

Big Windy (Great Escape Restaurant Turbine) | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarre Biomass FacilityOregon:Great Escape Restaurant Turbine)

314

Great Western Malting Company geothermal project, Pocatello, Idaho. Final report  

SciTech Connect (OSTI)

The Great Western Malting Company recently constructed a barley malting facility in Pocatello, Idaho, designed to produce 6.0 million bushels per year of brewing malt. This facility uses natural gas to supply the energy for germination and kilning processes. The escalating cost of natural gas has prompted the company to look at alternate and more economical sources of energy. Trans Energy Systems has investigated the viabiity of using geothermal energy at the new barley processing plant. Preliminary investigations show that a geothermal resource probably exists, and payback on the installation of a system to utilize the resource will occur in under 2 years. The Great Western Malting plant site has geological characteristics which are similar to areas where productive geothermal wells have been established. Geological investigations indicate that resource water temperatures will be in the 150 to 200/sup 0/F range. Geothermal energy of this quality will supply 30 to 98% of the heating requirements currently supplied by natural gas for this malting plant. Trans Energy Systems has analyzed several systems of utilizing the geothermal resource at the Great Western barley malting facility. These systems included: direct use of geothermal water; geothermal energy heating process water through an intermediary heat exchanger; coal or gas boosted geothermal systems; and heat pump boosted geothermal system. The analysis examined the steps that are required to process the grain.

Christensen, N.T.; McGeen, M.A.; Corlett, D.F.; Urmston, R.

1981-12-23T23:59:59.000Z

315

The United States after the great recession: the challenge of sustainable growth  

SciTech Connect (OSTI)

The paper outlines the strengths and weaknesses of the U.S. economic growth model, assesses its ability to respond to the key economic, environmental and social challenges currently facing the U.S. and proposes policies that if adopted would move the U.S. onto a more sustainable growth path. The paper provides scenarios of projected future growth trajectories, as well as recommendations for specific policies in key areas: employment, infrastructure, energy and fiscal rebalancing. To reach this goal this paper focuses on four areas for action: Increasing employment, which is the most urgent priority to accelerate recovery from the Great Recession, while addressing underlying structural issues that have led to a decade of poor economic outcomes for most citizens; Investing in the future, as the key marker of whether the United States is prepared to make farsighted decisions to improve education, build new infrastructure and increase innovation; Maximizing an increased energy endowment in a way that grows the economy, while reinforcing the trend towards reducing resource demand and reducing greenhouse gas emissions; and, Fiscal rebalancing, where the United States must insulate economic recovery from the process of fiscal reform while reducing and stabilizing debt over the long term. Finally, we argue that President Obama can re-energize Americas global leadership if he builds on a platform of domestic actions that enhance the sustainability of Americas society and economy.

Meltzer, Joshua [The Johns Hopkins Universitys School of Advanced International Studies (United States); Steven, David (The Brookings Institution Center and the Center on International Cooperation at New York University (United States)); Langley, Claire (The Brookings Institution, Washington, DC (United States)

2013-02-15T23:59:59.000Z

316

Backward Precessional Whip and Whirl for a Two Point Rubbing Contact Model of a Rigid Rotor Supported by an Elastically Supported Rigid Stator  

E-Print Network [OSTI]

of rotor motion [L] csL, crL Damping constants [F t/L] CrL,CrR Clearance at rub surface [L] Dw W11W22-W 2 as introduce in Eq.(27) frLX, frRX, frLY frRY Reaction forces on the rotor at 2 contacts in the 2 planes [F] fL fR Reaction forces... components at the contact points are cos sin , sin cos cos sin , sin cos rLX L fL rLY L fL rRX R fR rRY R fR f N f f N f f N f f N f ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? (14) For this result, (cos sin ) (cos sin ) ( ) ( ) L...

Kumar, Dhruv Dileep

2011-10-21T23:59:59.000Z

317

Synchronous motor with soft start element formed between the motor rotor and motor output shaft to successfully synchronize loads that have high inertia and/or high torque  

DOE Patents [OSTI]

A line-start synchronous motor has a housing, a rotor shaft, and an output shaft. A soft-start coupling portion is operatively coupled to the output shaft and the rotor shaft. The soft-start coupling portion is configurable to enable the synchronous motor to obtain synchronous operation and to drive, at least near synchronous speed during normal steady state operation of the motor, a load having characteristics sufficient to prevent obtaining normal synchronous operation of the motor when the motor is operatively connected to the load in the absence of the soft-start coupling. The synchronous motor is sufficiently rated to obtain synchronous operation and to drive, at least near synchronous speed during normal steady state operation of the motor, a load having characteristics sufficient to prevent obtaining normal synchronous operation of the motor when the motor is operatively connected to the load in the absence of the soft-start coupling.

Umans, Stephen D; Nisley, Donald L; Melfi, Michael J

2014-10-28T23:59:59.000Z

318

LAURENTIAN GREAT LAKES ICE COVER TELECONNECTIONS Raymond Assel, NOAA, Great lakes EnvironmentalResearch Laboratory,Ann Arbor, MI 48105-1593  

E-Print Network [OSTI]

they were estimated using an electronic digitizer and ice charts produced by the U.S. Department of CommerceLAURENTIAN GREAT LAKES ICE COVER TELECONNECTIONS Raymond Assel, NOAA, Great lakes Environmental research on Great Lakes ice coverteleconnections.Here, annualmaximalice coverfor winters 1963

319

Abstract--The U.S. power industry is under great pressure to provide reactive power or Var support. Although it is generally  

E-Print Network [OSTI]

Abstract--The U.S. power industry is under great pressure to provide reactive power or Var support to provide local reactive power support, a thorough quantitative investigation of the economic benefit reactive power compensation. This paper investigates the benefits including reduced losses, shifting

Tolbert, Leon M.

320

Reduced Harmonic Representation of Partitions  

E-Print Network [OSTI]

In the present article the reduced integral representation of partitions in terms of harmonic products has been derived first by using hypergeometry and the new concept of fractional sum and secondly by studying the Fourier series of the kernel function appearing in the integral representation. Using the method of induction, a generalization of the theory has also been obtained.

Michalis Psimopoulos

2011-03-08T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Announcing: All Recycling Reduce your  

E-Print Network [OSTI]

Announcing: All Recycling Go Green! Reduce your contribution to the landfill, by choosing to voluntarily recycle acceptable items in the green All Recycling toters and containers around campus. ONLY THE ITEMS BELOW ARE ACCEPTED FOR ALL RECYCLING Please do not contaminate the recycling containers with trash

Papautsky, Ian

322

Conservation Stand! Reducing My Commute  

E-Print Network [OSTI]

. + Diverts plastic waste for food production. + Placed beside window, replaces light input with solarConservation Stand! Reducing My Commute 72.6 mi to 5.1 mi #12;#12;Conserving Water and Energy or contribution to sedimentation. + Food produced on site without transportation costs. - Depends on energy input

Schweik, Charles M.

323

Reliability of steam-turbine rotors. Task 1. Lifetime prediction analysis system. Final report. [Using STRAP and SAFER computer codes and boresonic data  

SciTech Connect (OSTI)

Task 1 of RP 502, Reliability of Steam Turbine Rotors, resulted in the development of a computerized lifetime prediction analysis system (STRAP) for the automatic evaluation of rotor integrity based upon the results of a boresonic examination of near-bore defects. Concurrently an advanced boresonic examination system (TREES), designed to acquire data automatically for lifetime analysis, was developed and delivered to the maintenance shop of a major utility. This system and a semi-automated, state-of-the-art system (BUCS) were evaluated on two retired rotors as part of the Task 2 effort. A modified nonproprietary version of STRAP, called SAFER, is now available for rotor lifetime prediction analysis. STRAP and SAFER share a common fracture analysis postprocessor for rapid evaluation of either conventional boresonic amplitude data or TREES cell data. The final version of this postprocessor contains general stress intensity correlations for elliptical cracks in a radial stress gradient and provision for elastic-plastic instability of the ligament between an imbedded crack and the bore surface. Both linear elastic and ligament rupture models were developed for rapid analysis of linkup within three-dimensional clusters of defects. Bore stress-rupture criteria are included, but a creep-fatigue crack growth data base is not available. Physical and mechanical properties of air-melt 1CrMoV forgings are built into the program; however, only bounding values of fracture toughness versus temperature are available. Owing to the lack of data regarding the probability of flaw detection for the boresonic systems and of quantitative verification of the flaw linkup analysis, automatic evlauation of boresonic results is not recommended, and the lifetime prediction system is currently restricted to conservative, deterministic analysis of specified flaw geometries.

Nair, P.K.; Pennick, H.G.; Peters, J.E.; Wells, C.H.

1982-12-01T23:59:59.000Z

324

Reduced Total Energy Requirements for a Modified Alcubierre Warp Drive Spacetime  

E-Print Network [OSTI]

It can be shown that negative energy requirements within the Alcubierre spacetime can be greatly reduced when one introduces a lapse function into the Einstein tensor. Thereby reducing the negative energy requirements of the warp drive spacetime arbitrarily as a function of A(ct,r_s). With this function new quantum inequality restrictions are investigated in a general form. Finally a pseudo method for controlling a warp bubble at a velocity greater than that of light is presented.

F. Loup; D. Waite; E. Halerewicz Jr

2001-11-03T23:59:59.000Z

325

Goal-oriented error estimation for reduced basis method, with application to certified sensitivity  

E-Print Network [OSTI]

of interest computed using the reduced model is tainted by a reduction error. We present a new, efficiently- tions (PDEs). These models require input data (e.g., the physical features of the considered system papers showed that using an adapted basis could lead to a great improvement of reduction error

Boyer, Edmond

326

Reducing effluent discharge and recovering bioenergy in an osmotic microbial fuel cell treating domestic wastewater  

E-Print Network [OSTI]

domestic wastewater Zheng Ge, Qingyun Ping, Li Xiao, Zhen He Department of Civil Engineering and Mechanics cell is developed to treat domestic wastewater. Wastewater effluent can be greatly reduced due to osmotic water extraction. Bioenergy recovered from wastewater can potentially support pumping system

327

Western Coal/Great Lakes Alternative export-coal conference  

SciTech Connect (OSTI)

This conference dealt with using the Great Lakes/St. Lawrence Seaway as an alternative to the East and Gulf Coasts for the exporting of coal to Europe and the potential for a piece of the European market for the subbituminous coals of Montana and Wyoming. The topics discussed included: government policies on coal exports; the coal reserves of Montana; cost of rail transport from Western mines to Lake Superior; the planning, design, and operation of the Superior Midwest Energy Terminal at Superior, Wisconsin; direct transfer of coal from self-unloading lakers to large ocean vessels; concept of total transportation from mines to users; disadvantage of a nine month season on the Great Lakes; costs of maritime transport of coal through the Great Lakes to Europe; facilities at the ice-free, deep water port at Sept Iles; the use of Western coals from an environmental and economic viewpoint; the properties of Western coal and factors affecting its use; the feasibility of a slurry pipeline from the Powder River Basin to Lake Superior; a systems analysis of the complete hydraulic transport of coal from the mine to users in Europe; the performance of the COJA mill-burner for the combustion of superfine coal; demand for steam coal in Western Europe; and the effect the New Source Performance Standards will have on the production and use of Western coal. A separate abstract was prepared for each of the 19 papers for the Energy Data Base (EDB); 17 will appear in Energy Research Abstracts (ERA) and 11 in Energy Abstracts for Policy Analysis (EAPA). (CKK)

Not Available

1981-01-01T23:59:59.000Z

328

Obama Administration Hosts Great Lakes Offshore Wind Workshop in Chicago  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergyDepartment of Energy(National1 -OSSGas and OilinPrograms inwith Great

329

Great Lakes Science Center Wind Farm | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:Photon Place: Golden, COIndiana JumpGray County WindGreat Lakes

330

Nanoparticle Research Creates Great Contrast | GE Global Research  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions andData andFleet TestAccountsNanoparticle Research Creates Great

331

Reducing carbon dioxide to products  

DOE Patents [OSTI]

A method reducing carbon dioxide to one or more products may include steps (A) to (C). Step (A) may bubble said carbon dioxide into a solution of an electrolyte and a catalyst in a divided electrochemical cell. The divided electrochemical cell may include an anode in a first cell compartment and a cathode in a second cell compartment. The cathode may reduce said carbon dioxide into said products. Step (B) may adjust one or more of (a) a cathode material, (b) a surface morphology of said cathode, (c) said electrolyte, (d) a manner in which said carbon dioxide is bubbled, (e), a pH level of said solution, and (f) an electrical potential of said divided electrochemical cell, to vary at least one of (i) which of said products is produced and (ii) a faradaic yield of said products. Step (C) may separate said products from said solution.

Cole, Emily Barton; Sivasankar, Narayanappa; Parajuli, Rishi; Keets, Kate A

2014-09-30T23:59:59.000Z

332

Modeling Creep-Fatigue-Environment Interactions in Steam Turbine Rotor Materials for Advanced Ultra-supercritical Coal Power Plants  

SciTech Connect (OSTI)

The goal of this project is to model creep-fatigue-environment interactions in steam turbine rotor materials for advanced ultra-supercritical (A-USC) coal power Alloy 282 plants, to develop and demonstrate computational algorithms for alloy property predictions, and to determine and model key mechanisms that contribute to the damages caused by creep-fatigue-environment interactions. The nickel based Alloy 282 is selected for this project because it is one of the leading candidate materials for the high temperature/pressure section of an A-USC steam turbine. The methods developed in the project are expected to be applicable to other metal alloys in similar steam/oxidation environments. The major developments are: ? failure mechanism and microstructural characterization ? atomistic and first principles modeling of crack tip oxygen embrittlement ? modeling of gamma prime microstructures and mesoscale microstructure-defect interactions ? microstructure and damage-based creep prediction ? multi-scale crack growth modeling considering oxidation, viscoplasticity and fatigue The technology developed in this project is expected to enable more accurate prediction of long service life of advanced alloys for A-USC power plants, and provide faster and more effective materials design, development, and implementation than current state-of-the-art computational and experimental methods. This document is a final technical report for the project, covering efforts conducted from January 2011 to January 2014.

Shen, Chen

2014-01-20T23:59:59.000Z

333

Great Lakes Biomass State and Regional Partnership (GLBSRP)  

SciTech Connect (OSTI)

The Council of Great Lakes Governors administered the Great Lakes Biomass State and Regional Partnership (GLBSRP) under contract with the U. S. Department of Energy (DOE). This Partnership grew out of the existing Regional Biomass Energy Program which the Council had administered since 1983. The GLBSRP includes the States of Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio and Wisconsin. The GLBSRP??s overall goal is to facilitate the increased production and use of bioenergy and biobased products throughout the region. The GLBSRP has traditionally addressed its goals and objectives through a three-pronged approach: providing grants to the States; undertaking region-wide education, outreach and technology transfer projects; and, providing in-house management, support and information dissemination. At the direction of US Department of Energy, the primary emphasis of the GLBSRP in recent years has been education and outreach. Therefore, most activities have centered on developing educational materials, hosting workshops and conferences, and providing technical assistance. This report summarizes a selection of activities that were accomplished under this cooperative agreement.

Frederic Kuzel

2009-09-01T23:59:59.000Z

334

Hydraulic fracturing experiments in the Great Northern Coal seam  

SciTech Connect (OSTI)

Two field-scale hydraulic fracturing experiments were performed in vertical boreholes on the lease of Munmorah Colliery located south of Newcastle, NSW. The treatments fractured the 3-meter thick, 220-meter deep Great Northern coal seam and were designed to provide a direct comparison between a borate-crosslinked gel and a water treatment. The fracture geometries were mapped during mining of the coal seam. Geologic mapping disclosed a well-defined coal face cleat and systematic full-seam joints perpendicular to bedding and trending NW. The vertical hydraulic fractures extended along the joint and face cleat direction. Evidence that an early slurry stage of fine mesh proppant acted to block off one of two competing parallel fractures was found at one of the mineback sites.

Jeffrey, R.G.; Weber, C.R.; Vlahovic, W.; Enever, J.R.

1994-12-31T23:59:59.000Z

335

Reduced vibration motor winding arrangement  

DOE Patents [OSTI]

An individual phase winding arrangement having a sixty electrical degree phase belt width for use with a three phase motor armature includes a delta connected phase winding portion and a wye connected phase winding portion. Both the delta and wye connected phase winding portions have a thirty electrical degree phase belt width. The delta and wye connected phase winding portions are each formed from a preselected number of individual coils each formed, in turn, from an unequal number of electrical conductor turns in the approximate ratio of {radical}3. The individual coils of the delta and wye connected phase winding portions may either be connected in series or parallel. This arrangement provides an armature winding for a three phase motor which retains the benefits of the widely known and utilized thirty degree phase belt concept, including improved mmf waveform and fundamental distribution factor, with consequent reduced vibrations and improved efficiency. 4 figs.

Slavik, C.J.; Rhudy, R.G.; Bushman, R.E.

1997-11-11T23:59:59.000Z

336

Student Job (2 positions at Great Lakes Bioenergy Research Center (GLBRC))  

E-Print Network [OSTI]

Student Job (2 positions at Great Lakes Bioenergy Research Center (GLBRC)) Full-time summer job upon experience and qualifications. The Great Lakes Bioenergy Research Center (GLBRC) has openings

Liblit, Ben

337

The reception and study of Renaissance architecture in Great Britain, 1890-1914  

E-Print Network [OSTI]

The writing of Renaissance architectural history in the period 1890-1914 in Great Britain changed dramatically. Despite modernism's tenet of rejecting history from design, Renaissance architectural history in Great Britain ...

Wheeler, Katherine Jean

2007-01-01T23:59:59.000Z

338

Multi-Mode RCCI Has Great Potential to Improve Fuel Economy in...  

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

Multi-Mode RCCI Has Great Potential to Improve Fuel Economy in Light-Duty Diesel Engines Multi-Mode RCCI Has Great Potential to Improve Fuel Economy in Light-Duty Diesel Engines...

339

GREAT MINDSTHINK ELECTRIC / WWW.EVS26.ORG Mitigation of Vehicle Fast Charge  

E-Print Network [OSTI]

GREAT MINDSTHINK ELECTRIC / WWW.EVS26.ORG Mitigation of Vehicle Fast Charge Grid Impacts-55080 #12;GREAT MINDSTHINK ELECTRIC / WWW.EVS26.ORG Electric Vehicle Grid Integration 2 Cross Cutting & TESTING DEPLOYMENT & PARTNERSHIPS Tx Tx Tx #12;GREAT MINDSTHINK ELECTRIC / WWW.EVS26.ORG3 Vehicle Test

340

Tmoins Muets/Mute Witnesses: ethnography and archaeology encounter the objects of the Great War  

E-Print Network [OSTI]

59 Tmoins Muets/Mute Witnesses: ethnography and archaeology encounter the objects of the Great War MUTE WITNESSES: AN ARCHAEOLOGICAL AND ETHNOLOGICAL APPROACH TO OBJECTS FROM THE GREAT WAR "Mute witnesses" are objects from the Great War according to the brochure of a remarkable collection open

Paris-Sud XI, Universit de

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

NYSGA 2010 Trip 4 -Olsen Fossil Great Lakes of the Newark Supergroup  

E-Print Network [OSTI]

of the dinosaurs, the rifting process, carbon sequestration, and chaos in the Solar System. INTRODUCTION: THE TRIASSIC-JURASSIC GREAT LAKES OF CENTRAL PANGEA This guidebook focuses of the deposits, fossils dimension comparable to the scale of the American Great Lakes or the East African Great Lakes and perhaps

Olsen, Paul E.

342

Long-term Trends in Laurentian Great Lakes Ice Cover Raymond A. Assel  

E-Print Network [OSTI]

Long-term Trends in Laurentian Great Lakes Ice Cover Raymond A. Assel OPEN FILE REPORT December Commonwealth Blvd. Ann Arbor, MI 48105 #12;Long-Term Trends in Laurentian Great Lakes Ice Cover Raymond A is to give a brief overview of nearshore and lake wide trends in Great Lakes ice cover over the past one

343

Great Lakes Ice Thickness Data Rescue Primary Investigator: Raymond Assel -NOAA/GLERL (Emeritus)  

E-Print Network [OSTI]

Great Lakes Ice Thickness Data Rescue Primary Investigator: Raymond Assel - NOAA/GLERL (Emeritus) Overview Ice cover is an important environmental factor affecting physical and biological processes in the coastal region of the Great Lakes. However, computerized ice thickness data along the shores of the Great

344

PROCEEDINGS OF THE GREAT LAKES ICE RESEARCH WORKSHOP* Held October 18-19, 1983  

E-Print Network [OSTI]

PROCEEDINGS OF THE GREAT LAKES ICE RESEARCH WORKSHOP* Held October 18-19, 1983 at the Ohio State, and where we should be going relative to ice cover research on the Great Lakes. The original papers research in which Great Lakes ice is an important consideration. #12;CONTENTS Page INTRODUCTION

345

Adapting to Climate Change and Variability in the Great Lakes-St. Lawrence Basin Great Lakes-St. Lawrence Basin Project  

E-Print Network [OSTI]

; this is the adaptation component. Communication of climate change information to various publicsAdapting to Climate Change and Variability in the Great Lakes-St. Lawrence Basin 52 Great Lakes in response to potential climate change and variability. When we were preparing for this talk on what we have

346

Reduced models for quantum gravity  

E-Print Network [OSTI]

The preceding talks given at this conference have dealt mainly with general ideas for, main problems of and techniques for the task of quantizing gravity canonically. Since one of the major motivations to arrange for this meeting was that it should serve as a beginner's introduction to canonical quantum gravity, we regard it as important to demonstrate the usefulness of the formalism by means of applying it to simplified models of quantum gravity, here formulated in terms of Ashtekar's new variables. From the various, completely solvable, models that have been discussed in the literature we choose those that we consider as most suitable for our pedagogical reasons, namely 2+1 gravity and the spherically symmetric model. The former model arises from a dimensional, the latter from a Killing reduction of full 3+1 gravity. While 2+1 gravity is usually treated in terms of closed topologies without boundary of the initial data hypersurface, the toplogy for the spherically symmetric system is chosen to be asymptotically flat. Finally, 2+1 gravity is more suitably quantized using the loop representation while spherically symmetric gravity is easier to quantize via the self-dual representation. Accordingly, both types of reductions, both types of topologies and both types of representations that are mainly employed in the literature in the context of the new variables come into practice. What makes the discussion especially clear is the fact that for both models the reduced phase space turns out to be finitely dimensional.

T. Thiemann

1999-10-04T23:59:59.000Z

347

The Distribution of Satellite Galaxies: The Great Pancake  

E-Print Network [OSTI]

The 11 known satellite galaxies within 250 kpc of the Milky Way lie close to a great circle on the sky. We use high resolution N-body simulations of galactic dark matter halos to test if this remarkable property can be understood within the context of the cold dark matter cosmology. We construct halo merger trees from the simulations and use a semianalytic model to follow the formation of satellite galaxies. We find that in all 6 of our simulations, the 11 brightest satellites are indeed distributed along thin, disk-like structures analogous to that traced by the Milky Way's satellites. This is in sharp contrast to the overall distributions of dark matter in the halo and of subhalos within it which, although triaxial, are not highly aspherical. We find that the spatial distribution of satellites is significantly different from that of the most massive subhalos but is similar to that of the subset of subhalos that had the most massive progenitors at earlier times. The elongated disk-like structure delineated by the satellites has its long axis aligned with the major axis of the dark matter halo. We interpret our results as reflecting the preferential infall of satellites along the spines of a few filaments of the cosmic web.

Noam I Libeskind; Carlos S Frenk; Shaun Cole; John C Helly; Adrian Jenkins; Julio F Navarro; Chris Power

2005-03-18T23:59:59.000Z

348

Mercury and cause of death in great white herons  

SciTech Connect (OSTI)

Mercury contamination is suspected to adversely affect wading birds in southern Florida. To determine the magnitude of contamination associated with cause of death we followed 3 adult and 19 juvenile radio-tagged great white herons (Ardea herodias occidentalis), recovered them soon after death, and determined liver mercury content and cause of death. Birds that died from acute causes had less (P < 0.001) mercury in their livers (geometric [bar x] [GM] = 1.77 ppm wet mass [wm], range 0.6-4.0 ppm, n = 9) than did those that died of chronic, often multiple, diseases (GM = 9.76 ppm, range 2.9-59.4 ppm, n = 13). Juvenile herons that migrated to mainland Florida accumulated more (P = 0.009) mercury in their livers than those that did not migrate. Kidney disease and gout were present in birds that died with >25 ppm wm liver mercury. Although detrimental to the health of wading birds, mercury contamination is presumably more detrimental to their reproductive efforts; therefore, an understanding of its ill effects is important in the management of these birds. 29 refs., 1 fig.

Spalding, M.G.; Sundlof, S.F. (Univ. of Florida, Gainesville, FL (United States)); Djork, R.D.; Powell, G.V.N. (National Audobon Research, Tavernier, FL (United States))

1994-10-01T23:59:59.000Z

349

Water Conservation in Southern Great Plains Wheat Production.  

E-Print Network [OSTI]

and wind erosion damage was reduced. Zievc use 01 areas -.!-P-l ticabili rnethw ertheless, water conservation alone is not enough to make the best F current soil and water resources available in the winter wheat of the Texas high plains. The amount... and distribution of seasonal rainrail naturally vary so much that a definite program of flexibility in the use of summer fallowing, tillage methods, and the rotation of diversi- fied crops becomes a physical necessity. The combined objectives of wind erosion...

Finnell, H. H. (Henry Howard)

1944-01-01T23:59:59.000Z

350

Optimizing MapReduce for Multicore Architectures  

E-Print Network [OSTI]

MapReduce is a programming model for data-parallel programs originally intended for data centers. MapReduce simplifies parallel programming, hiding synchronization and task management. These properties make it a promising ...

Kaashoek, Frans

2010-05-02T23:59:59.000Z

351

Significantly reduce maintenance time Documents&Mediabecomesthekey  

E-Print Network [OSTI]

Significantly reduce maintenance time Documents&Mediabecomesthekey contactforallmaintenanceneeds. MajorpartsarestoredbyDocuments& MediaattheMissionCenter.Thisreduces thetimeneededtoorderpartsandresultsin&Mediaoffersthecampus communityaconvenientandeconomicsolution foritscopiers,multifunctiondevicesandprinter needs. Print Management Program advantages Reduce

Mullins, Dyche

352

WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED,  

E-Print Network [OSTI]

to the manufacturer . Replaced with energy efficient light emitting diode (LED) signs. Project reduced risk of tritium

353

Reducing the Energy Usage of Oce Applications  

E-Print Network [OSTI]

Reducing the Energy Usage of Oce Applications Jason Flinn 1 , Eyal de Lara 2 , M. Satyanarayanan 1 of the energy usage of Microsoft's PowerPoint application and show that adaptive policies can reduce energy research e#11;ort, no silver bullet for reducing energy usage has yet been found. Instead, a comprehensive

Flinn, Jason

354

Great River Energy (28 Member Cooperatives)- Commercial and Industrial Efficiency Rebates  

Broader source: Energy.gov [DOE]

Great River Energy, a generation and transmission cooperative which serves 28 electric distribution cooperatives in Minnesota, offers rebates for the installation of certain energy efficiency...

355

Division of Water, Part 675: Great Lakes Water Withdrawal Registration Regulations (New York)  

Broader source: Energy.gov [DOE]

These regulations set forth requirements for the registration of water withdrawals and reporting of water losses from the Great Lakes Basin. The regulations apply to water withdrawals from...

356

Terra nitrogen Company, L.P.: Ammonia Plant Greatly Reduces Natural Gas Consumption After Energy Assessment. Industrial Technologies Program (ITP) Save Energy Now Case Study.  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of Energy StrainClientDesignOffice -Template for aofof EnergyEconomy

357

Urban Design to Reduce Automobile Dependence  

E-Print Network [OSTI]

transport energy and area of the city, but in terms oftransport energy (reduce the area for the city, i.e. ,

Newman, Peter; Kenworthy, Jeffrey

2006-01-01T23:59:59.000Z

358

Reducing Petroleum Despendence in California: Uncertainties About...  

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

Petroleum Despendence in California: Uncertainties About Light-Duty Diesel Reducing Petroleum Despendence in California: Uncertainties About Light-Duty Diesel 2002 DEER Conference...

359

Reducing Emissions Through Sustainable Transport: Proposal for...  

Open Energy Info (EERE)

Through Sustainable Transport: Proposal for a Sectoral Approach Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Reducing Emissions Through Sustainable Transport:...

360

Combustion with reduced carbon in the ash  

DOE Patents [OSTI]

Combustion of coal in which oxygen is injected into the coal as it emerges from burner produces ash having reduced amounts of carbon.

Kobayashi, Hisashi; Bool III, Lawrence E.

2005-12-27T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

An optimizing reduced order FDS for the tropical Pacific Ocean reduced gravity model  

E-Print Network [OSTI]

An optimizing reduced order FDS for the tropical Pacific Ocean reduced gravity model Zhendong Luoa) for the tropical Pacific Ocean reduced gravity model. Ensembles of data are compiled from transient solutions computed from the discrete equation system derived by FDS for the tropical Pacific Ocean reduced gravity

Aluffi, Paolo

362

The Great Moderation and Leptokurtosis after GARCH WenShwo Fang  

E-Print Network [OSTI]

The Great Moderation and Leptokurtosis after GARCH Adjustment WenShwo Fang Department of Economics that this finding of fat tails may reflect the Great Moderation. That is, leptokurtosis disappears after GARCH Moderation, leptokurtosis, GARCH models JEL classification: C32; E32; O40 * Corresponding author #12

Ahmad, Sajjad

363

...2!.J1... .J. J!j btl Great Lakes Gill Net  

E-Print Network [OSTI]

...2!.J1... .J. J!j btl Great Lakes Gill Net AUG1;) 1968 UNITED ST ATES DEPARTMENT OF THE INTERIOR DEPARTMENT OF THE INTERIOR U.S. FISH AND WILDLIFE SERVICE BUREAU OF COMMERCIAL FISHERIES Great Lakes Gill Net and cordage Synthetic twines. Cordage . Mesh size Gill net construction Fishing operations . . Setting

364

Citizen Science Case Study: The Great Sunflower Project Nathan R. Prestopnik  

E-Print Network [OSTI]

Citizen Science Case Study: The Great Sunflower Project Nathan R. Prestopnik Syracuse University napresto@syr.edu Abstract The Great Sunflower Project is a citizen science project designed to collect of citizen science dependent investigations. Associated Links The following links are to projects

Crowston, Kevin

365

Non-native grasses alter evapotranspiration and energy balance in Great Basin sagebrush communities  

E-Print Network [OSTI]

Non-native grasses alter evapotranspiration and energy balance in Great Basin sagebrush communities Avenue, Urbana, IL 61801, United States Received 19 April 2006; accepted 23 August 2006 Abstract Over key ecosystem processes in the Great Basin, including hydrology and energy balance. To determine how

DeLucia, Evan H.

366

Invasive Species, Harmful Algae & Hypoxia in the Great Lakes: An Ecosystem Approach Introduction  

E-Print Network [OSTI]

Invasive Species, Harmful Algae & Hypoxia in the Great Lakes: An Ecosystem Approach Introduction. Hypoxia has occurred frequently in the summer in western Lake Erie. HABs have been responsible The Laurentian Great Lakes are a major resource to North America, containing 18% of the world's surface

367

Great Lakes & Ohio River Division Harmful Algae Blooms (HAB) Response Plan  

E-Print Network [OSTI]

USACE Great Lakes & Ohio River Division Harmful Algae Blooms (HAB) Response Plan Erich Emery USACE Louisville District 28-29 MAY 2014 #12;Great Lakes & Ohio River Division 2 #12;Lake Erie 3 NOAA processed satellite imagery showing concentrations of cyanobacteria in Western Basin Lake Erie 7/27/2010 #12;Focus

US Army Corps of Engineers

368

Great Lakes Ice Cycle Primary Investigator: Raymond Assel -NOAA GLERL (Emeritus)  

E-Print Network [OSTI]

and cooling water intakes, and damaging shoreline structures. The ice cover also has an impact on the waterGreat Lakes Ice Cycle Primary Investigator: Raymond Assel - NOAA GLERL (Emeritus) Co Board The formation, duration, and extent of ice cover on the Great Lakes has a major impact

369

GRC Transactions, Vol. 29, 2005 Geothermal, GIS, potential, favorability, Great Basin, map  

E-Print Network [OSTI]

_gis2. htm) of the Great Basin Center for Geothermal Energy (GBC- GE). This map allows for separate to host high-temperature (> 150° C) geothermal systems capable of producing electrical energy. ThreeGRC Transactions, Vol. 29, 2005 223 Keywords Geothermal, GIS, potential, favorability, Great Basin

370

GCI Monthly A publication of the Great Cities Institute at the University of Illinois at Chicago  

E-Print Network [OSTI]

1 GCI Monthly A publication of the Great Cities Institute at the University of Illinois. I hope the summer treated you well, and that you can join us at Great Cities with renewed energy at the University of Illinois at Chicago. She holds a PhD degree in Computer Science from the University of Toronto

Illinois at Chicago, University of

371

Natural history of thorny devils Moloch horridus (Lacertilia: Agamidae) in the Great Victoria Desert  

E-Print Network [OSTI]

183 Natural history of thorny devils Moloch horridus (Lacertilia: Agamidae) in the Great Victoria received August 1997; accepted February 1998 Abstract Daily movements and activity of three male and five female thorny devils (Moloch horridus) were monitored using biotelemetry in the Great Victoria Desert

Pianka, Eric R.

372

Using Satellite Radar Data to Map and Monitor Variations in Great Lakes Ice Cover  

E-Print Network [OSTI]

Using Satellite Radar Data to Map and Monitor Variations in Great Lakes Ice Cover G.A. Leshkevich synthetic aperture radar (SAR) and scatterometer data, are used to classify and map Great Lakes ice cover and to derive freeze-up date, break- up date, and ice cover duration. These are important indicators of regional

373

Improved Great Lakes Ice Cover Climatology Primary Investigator: Raymond Assel -NOAA GLERL (Emeritus)  

E-Print Network [OSTI]

Improved Great Lakes Ice Cover Climatology Primary Investigator: Raymond Assel - NOAA GLERL (Emeritus) Co-Investigators: Thomas Croley - NOAA GLERL (Emeritus) Overview Ice cover affects mass and energy exchange between the planetary boundary layer and the waters of the Great Lakes. The improved ice

374

Is the Relationship between Great Lakes Ice Cover and Climate Patterns Statistically Significant?  

E-Print Network [OSTI]

Is the Relationship between Great Lakes Ice Cover and Climate Patterns Statistically Significant) - NOAA GLERL Overview This work is based on previous projects titled "Great Lakes Ice Cycle" conducted and climate GCM products along with historical sea ice observations including recent satellite measurements

375

Conservation Cores: Reducing the Energy of  

E-Print Network [OSTI]

1 Conservation Cores: Reducing the Energy of Mature Computations Ganesh Venkatesh, Jack Sampson! Dark Silicon #12;9 Conservation Cores Specialized cores for reducing energy ­ Automatically generated Conservation Core Architecture & Synthesis Patchable Hardware Results Conclusions #12;12 Constructing a C

Wang, Deli

376

Identify the Problem: Reduce Waste By  

E-Print Network [OSTI]

aims to reduce waste by banning plastic bags in light of the California state law AB 2449 which Primary energy Plastic uses 23% less Paper uses 80% less Solid waste Plastic contributes 76% less AbioticIdentify the Problem: Reduce Waste By Banning Plastic Bag Use Define Goal: Is the ban the most

Iglesia, Enrique

377

A simple rotor current observer with an arbitrary rate of convergence for the Brushless Doubly-Fed  

E-Print Network [OSTI]

. These advantages are realised through a reduced capital installation cost, due to a frac- tional inverter power drive (VSD), and as a generator where the prime mover speed can be variable, such as in a wind turbine requirement (as compared to that for an induction machine VSD (or generator)), and further, the advantages

Cambridge, University of

378

Performance of reduced wall EPR insulated medium voltage power cables. Part 2: Mechanical characteristics  

SciTech Connect (OSTI)

For the replacement of paper insulated lead covered cables (PILC) reduced insulation wall designs have been developed. They provide a reliable lower diameter cable design for installation in existing PILC conduits. Representing Part 2 of the investigation, this paper presents the results of mechanical testing conducted on both reduced and full wall EPR insulated cables. Both jacketed and non-jacketed cable designs have been subjected to mechanical pulling forces which greatly exceed recommended industry limitations, followed by electrical testing to ascertain cable performance. The results of this study conclude that reduced wall EPR insulated cables can safely withstand the same pulling forces as recommended for conventional walls and can be designed for installation under the same pulling limitations.

Wen, Y.; Cinquemani, P.L. [Pirelli Cable Corp., Lexington, SC (United States)

1997-04-01T23:59:59.000Z

379

Program and abstracts of the 28th conference on Great Lakes research  

SciTech Connect (OSTI)

Abstracts of papers presented at the 28th Conference on Great Lakes Research and the annual meeting of the International Association for Great Lakes Research covered two symposia. The first was a comparison of Great Lakes and Baltic ecosystems, which provided an opportunity for international exchanges of information and insights. The second featured pollution problems in the Green Bay estuary environment that is of particular value to Wisconsin and Michigan. There are 41 separate abstracts selected for the Energy Data Base (EDB). Four of those were also selected for Energy Research Abstracts (ERA), six for Energy Abstracts for Policy Analysis (EAPA), and two for INS.

Not Available

1985-01-01T23:59:59.000Z

380

Healthy habits: reducing our carbon footprint  

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

energy or creating waste? Big changes for a smaller carbon footprint and less pollution The Lab is working to reduce emissions by nearly 30 percent from energy use in...

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Reducing Safety Flaring through Advanced Control  

E-Print Network [OSTI]

An advanced process control application, using DMCplus (Aspen Technology, Inc.), was developed to substantially reduce fuel gas losses to the flare at a large integrated refining / petrochemical complex. Fluctuations in internal fuel gas system...

Hokanson, D.; Lehman, K.; Matsumoto, S.; Takai, N.; Takase, F.

2010-01-01T23:59:59.000Z

382

How to Reduce Energy Supply Costs  

E-Print Network [OSTI]

Rising energy costs have many businesses looking for creative ways to reduce their energy usage and lower the costs of energy delivered to their facilities. This paper explores innovative renewable and alternative energy technologies that can help...

Swanson, G.

2007-01-01T23:59:59.000Z

383

Continuous Improvement Energy Projects Reduce Energy Consumption  

E-Print Network [OSTI]

Continuous Improvement Energy Projects Reduce Energy Consumption Eric Niemeyer, Operations Superintendent Drilling Specialties Company A division of Chevron Phillips Chemical Company LP ESL-IE-14-05-31 Proceedings of the Thrity...

Niemeyer, E.

2014-01-01T23:59:59.000Z

384

Examples of Process Modifications that Reduce Waste  

E-Print Network [OSTI]

The ideal approach to reducing or eliminating waste products is to avoid making them in the first place. This article will examine numerous process modifications that have accomplished that goal. We'll look at changes to raw materials, reactors...

Nelson, K. E.

385

Process for reducing aqueous nitrate to ammonia  

DOE Patents [OSTI]

Powdered aluminum is added to a nitrate-containing alkaline, aqueous solution to reduce the nitrate and/or nitrite to ammonia and co-produce a sinterable ceramic product.

Mattus, Alfred J. (Oak Ridge, TN)

1993-01-01T23:59:59.000Z

386

Swimming Upstream: How to Reduce Homelessness in  

E-Print Network [OSTI]

Swimming Upstream: How to Reduce Homelessness in Tempe's Emerging Urban Setting David V. Summers will be served) Wrigley Hall, Room 481 RSVP link: Download any free QR-Code reader app to your smart phone. Scan

Zhang, Junshan

387

Technologies for Reducing Nutrients in Dairy Effluent  

E-Print Network [OSTI]

on the amount of phosphorus that the river can accept safely. These limits, or total maximum daily loads (TMDLs), require that annual loading and annual average soluble concentrations of phosphorus in the river be reduced by 50 percent. To meet these new... standards, phosphorus must be reduced from dairy effluent applied to waste application fields. Consequently, dairies will need to adopt new, more effective and more efficient waste management practices. Case studies were conducted on a Geotube ? de...

Mukhtar, Saqib; Wagner, Kevin; Gregory, Lucas

2007-01-31T23:59:59.000Z

388

RECONSTRUCTING CLIMATE ON THE GREAT PLAINS FROM BURIED SOILS: A QUANTITATIVE APPROACH  

E-Print Network [OSTI]

The Great Plains, U.S.A. lack quantitative paleoclimatic data for the late Quaternary largely because two common sources of paleoclimatic data, tree ring and pollen records, are rare in the region. Sequences of buried ...

Zung, Ashley B.

2013-05-31T23:59:59.000Z

389

Law Seminars International Conference: Tribal Energy Development in the Great Lakes  

Broader source: Energy.gov [DOE]

This conference will focus on new opportunities for tribal energy projects in the Great Lakes region, as well as grant, loan, and other incentive programs, long-term energy market trends, the...

390

Microbiology (2000), 146, 851860 Printed in Great Britain Absence of translationally selected  

E-Print Network [OSTI]

Microbiology (2000), 146, 851860 Printed in Great Britain Absence of translationally selected Batterie des Lions, 13007 Marseille, France. Abbreviations: GC3s, GjC content at synonymously variable

Paris-Sud XI, Universit de

2000-01-01T23:59:59.000Z

391

E-Print Network 3.0 - adjacent great plains Sample Search Results  

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

OKLAHOMA THE ECOLOGY OF THEWESTERN OKLAHOMA Summary: at no great depth. 3. The Cherokee Salt Plain is the largest one in the State, having a roughly circular shape... FIGURE...

392

E-Print Network 3.0 - american great plains Sample Search Results  

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

OKLAHOMA THE ECOLOGY OF THEWESTERN OKLAHOMA Summary: at no great depth. 3. The Cherokee Salt Plain is the largest one in the State, having a roughly circular shape... FIGURE...

393

Great Lakes Issues of Interest by Dr. Stephen B. Brandt and Margaret B. Lansing  

E-Print Network [OSTI]

26 T Great Lakes Issues of Interest by Dr. Stephen B. Brandt and Margaret B. Lansing he National. This figure was provided by Stuart Ludsin (NOAA-GLERL) and Tom Johengen (CILER, U of Michigan). (including

394

Estimating Nonpoint Source Pollution Loadings in the Great Lakes Watersheds Chansheng He  

E-Print Network [OSTI]

contaminated sediments, urban runoff, storm sewers, and agriculture impairs Great Lakes shoreline waters will be used as the input to the water quality model for simulating pollutant transport through surface-scale water quality model to estimat

395

A house four all seasons : a suggested habitation model for Great Barrington  

E-Print Network [OSTI]

Great Barrington, Massachusetts. A naturally beautiful setting combined with four distinct weather seasons dictates a lifestyle for this small South Berkshire town's residents and visitors alike. This thesis proposes that ...

Davis, Jeffrey R

1988-01-01T23:59:59.000Z

396

Did the Great Recession Wipe Out a Decade of Economic Progress in Colorado?  

E-Print Network [OSTI]

1 Did the Great Recession Wipe Out a Decade of Economic Associate Professor of Economics Michael Marturana Research Economist Colorado rebuild. To make better decisions about Colorado's open economic path

397

Seizing a species : the story of the Great Salt Lake brine shrimp harvest  

E-Print Network [OSTI]

In the early 1950s, C.C. "Sparkplug" Sanders began harvesting brine shrimp from Utah's Great Salt Lake. Sanders built up a small business selling their eggs, called "cysts, to aquarium stores across the country. During the ...

Wotipka, Samuel Alex

2014-01-01T23:59:59.000Z

398

Great Lakes-St. Lawrence River Basin Water Resources Compact (multi-state)  

Broader source: Energy.gov [DOE]

This Act describes the management of the Great Lakes - St. Lawrence River basin, and regulates water withdrawals, diversions, and consumptive uses from the basin. The Act establishes a Council,...

399

On death ground : why weak states resist great powers explaining coercion failure in asymmetric interstate conflict  

E-Print Network [OSTI]

Great Powers often adopt coercive strategies, threatening or using limited force to convince weak states to comply with their demands. While coercive strategies have succeeded in just over half of asymmetric crises since ...

Haun, Phil M

2010-01-01T23:59:59.000Z

400

Training Program Plan for the Sales Department of Great Western Manufacturing  

E-Print Network [OSTI]

This field project for the Masters of Science in Engineering Management at the University of Kansas was designed to provide a layout for a training program for the Sales Department of Great Western Manufacturing. It began with a literature review...

Wiley, Katherine

2011-07-29T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

An investigation of dust storm generation in the Southern Great Plains  

E-Print Network [OSTI]

An investigation of dust sto'rms in the Southern Great Plains was conducted to determine correlations between dust and precipitation, Antecedent Precipitation Index (API), wind, time of occurrence, and dew-point depression. Re- lationships between blowing dust... Summary of favorable parameters and conditions for springtime generation of blowing dust in local areas of the Southern Great Plains 66 LIST OF FIGURES Figure Title Page Physiographic regions of the United States and their dominant landf orms (after...

Pollard, Marshall Conrad

1977-01-01T23:59:59.000Z

402

Fitting Reduced Rank Regression Models by Alternating Maximum Likelihoods  

E-Print Network [OSTI]

Fitting longitudinal reduced rank regression models byA J . (1965). Reduced-rank regression for the multivariateFITTING LONGITUDINAL REDUCED RANK REGRESSION MODELS BY

Jan de Leeuw

2011-01-01T23:59:59.000Z

403

Process for reducing beta activity in uranium  

DOE Patents [OSTI]

This invention is a method for lowering the beta radiation hazards associated with the casting of uranium. The method reduces the beta radiation emitted from the as-cast surfaces of uranium ingots. The method also reduces the amount of beta radiation emitters retained on the interiors of the crucibles that have been used to melt the uranium charges and which have undergone cleaning in a remote handling facility. The lowering of the radioactivity is done by scavenging the beta emitters from the molten uranium with a molten mixture containing the fluorides of magnesium and calcium. The method provides a means of collection and disposal of the beta emitters in a manner that reduces radiation exposure to operating personnel in the work area where the ingots are cast and processed.

Briggs, Gifford G. (Cincinnatti, OH); Kato, Takeo R. (Cincinnatti, OH); Schonegg, Edward (Cleves, OH)

1986-01-01T23:59:59.000Z

404

Process for reducing beta activity in uranium  

DOE Patents [OSTI]

This invention is a method for lowering the beta radiation hazards associated with the casting of uranium. The method reduces the beta radiation emitted from the as-cast surfaces of uranium ingots. The method also reduces the amount of beta radiation emitters retained on the interiors of the crucibles that have been used to melt the uranium charges and which undergone cleaning in a remote handling facility. The lowering of the radioactivity is done by scavenging the beta emitters from the molten uranium with a molten mixture containing the fluorides of magnesium and calcium. The method provides a means of collection and disposal of the beta emitters in a manner that reduces radiation exposure to operating personnel in the work area where the ingots are cast and processed. 5 tabs.

Briggs, G.G.; Kato, T.R.; Schonegg, E.

1985-04-11T23:59:59.000Z

405

Alternatives for reducing hot-water bills  

SciTech Connect (OSTI)

A two stage approach to reducing residential water heating bills is described. In Stage I, simple conservation measures were included to reduce the daily hot water energy consumption and the energy losses from the water tank. Once these savings are achieved, Stage II considers more costly options for further reducing the water heating bill. Four alternatives are considered in Stage II: gas water heaters; solar water heaters (two types); heat pump water heaters; and heat recovery from a heat pump or air conditioner. To account for variations within the MASEC region, information on water heating in Rapid City, Minneapolis, Chicago, Detroit, and Kansas City is presented in detail. Information on geography, major population centers, fuel prices, climate, and state solar incentives is covered. (MCW)

Bennington, G.E.; Spewak, P.C.

1981-06-01T23:59:59.000Z

406

Infrared photoemitting diode having reduced work function  

DOE Patents [OSTI]

In electro-optical detectors which include as elements a photoemitting photocathode and anode, a photoemitting diode is fabricated which lowers the diode's work function, thus reducing the cooling requirement typically needed for this type of device. The work function is reduced by sandwiching between the photocathode and anode a liquid meidum of the formula NR/sub 3/ and having an electron affinity for the electrons of the photocathode, which liquid medium permits free electrons leaving the photocathode to remain as stable solvated species in the liquid medium. Thus, highly light-absorbent, and therefore thin, metallic layers can be used for detection, thereby reducing dark current at a given temperature, with a consequent reduction in cooling requirements at constant detector performance.

Hirschfeld, T.B.

1982-05-06T23:59:59.000Z

407

CONTRIBUTIONS TO 'fHE BIOLOGY OF THE GREAT LAKES. THE PLANKTON ALG~ OF LAKE ERIE, WITH SPECIAL REFERENCE TO  

E-Print Network [OSTI]

OF THE GREAT LAKES. THE PLANKTON ALGA3 OF LAKE ERIE, WITH SPECIAL REFERENCE TO THE CHLOROPHYCEA3. By JULIA WCONTRIBUTIONS TO 'fHE BIOLOGY OF THE GREAT LAKES. THE PLANKTON ALG~ OF LAKE ERIE, WITH SPECIAL

408

Dilemmas of decline, risks of rise : the systemic and military sources of rising state strategy towards declining great powers  

E-Print Network [OSTI]

What explains variation in relatively rising state strategy towards declining great powers? This project develops and tests a theory of state strategy vis-a-vis declining great powers, termed Realist Decline Theory. Realist ...

Itzkowitz Shifrinson, Joshua R

2013-01-01T23:59:59.000Z

409

Reduced Basis Method for Nanodevices Simulation  

SciTech Connect (OSTI)

Ballistic transport simulation in nanodevices, which involves self-consistently solving a coupled Schrodinger-Poisson system of equations, is usually computationally intensive. Here, we propose coupling the reduced basis method with the subband decomposition method to improve the overall efficiency of the simulation. By exploiting a posteriori error estimation procedure and greedy sampling algorithm, we are able to design an algorithm where the computational cost is reduced significantly. In addition, the computational cost only grows marginally with the number of grid points in the confined direction.

Pau, George Shu Heng

2008-05-23T23:59:59.000Z

410

Reducing Regulatory Burden | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September 15,2015 |Rebecca MatulkaDeliveryUpdatedRFI ReducingBurden Reducing

411

Reducing Power Factor Cost | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergyDepartmentEnergy DataRemediated |Reducing LED Costs ThroughReducing Power

412

Reducing Regulatory Burden | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L dDepartmentnews-flashes Office ofof EnergyReducing PeakReducing

413

Progress of the RERTR (Reduced Enrichment Research and Test Reactor) Program in 1989  

SciTech Connect (OSTI)

The progress of the Reduced Enrichment Research and Test Reactor (RERTR) Program is described. After a brief summary of the results which the RERTR Program, in collaboration with its many international partners, had achieved by the end of 1988, the major events, findings, and activities of 1989 are reviewed. The scope of the RERTR Program activities was curtailed, in 1989, by an unexpected legislative restriction which limited the ability of the Arms Control and Disarmament Agency to adequately fund the program. Nevertheless, the thrust of the major planned program activities was maintained, and meaningful results were obtained in several areas of great significance for future work. 15 refs., 12 figs.

Travelli, A.

1989-01-01T23:59:59.000Z

414

Scientific Guidance, Research, and Educational Outreach for the ARM Climate Research Facility (ACRF) in the Southern Great Plains  

SciTech Connect (OSTI)

Scientific Guidance, Research, and Educational Outreach for the ARM Climate Research Facility (ACRF) in the Southern Great Plains

Lamb, Peter J.

2013-06-13T23:59:59.000Z

415

Towards a chronology of brownware pottery in the western Great Basin: A case study from owens valley  

E-Print Network [OSTI]

Revisions in Archaeological Sequences of the Great Basin in Interior Southern California, Nevada Archaeological Survey Research Papers, 5,

Eerkens, J W

2003-01-01T23:59:59.000Z

416

Wind Regimes in Complex Terrain of the Great Valley of Eastern Tennessee  

SciTech Connect (OSTI)

This research was designed to provide an understanding of physical wind mechanisms within the complex terrain of the Great Valley of Eastern Tennessee to assess the impacts of regional air flow with regard to synoptic and mesoscale weather changes, wind direction shifts, and air quality. Meteorological data from 2008 2009 were analyzed from 13 meteorological sites along with associated upper level data. Up to 15 ancillary sites were used for reference. Two-step complete linkage and K-means cluster analyses, synoptic weather studies, and ambient meteorological comparisons were performed to generate hourly wind classifications. These wind regimes revealed seasonal variations of underlying physical wind mechanisms (forced channeled, vertically coupled, pressure-driven, and thermally-driven winds). Synoptic and ambient meteorological analysis (mixing depth, pressure gradient, pressure gradient ratio, atmospheric and surface stability) suggested up to 93% accuracy for the clustered results. Probabilistic prediction schemes of wind flow and wind class change were developed through characterization of flow change data and wind class succession. Data analysis revealed that wind flow in the Great Valley was dominated by forced channeled winds (45 67%) and vertically coupled flow (22 38%). Down-valley pressure-driven and thermally-driven winds also played significant roles (0 17% and 2 20%, respectively), usually accompanied by convergent wind patterns (15 20%) and large wind direction shifts, especially in the Central/Upper Great Valley. The behavior of most wind regimes was associated with detectable pressure differences between the Lower and Upper Great Valley. Mixing depth and synoptic pressure gradients were significant contributors to wind pattern behavior. Up to 15 wind classes and 10 sub-classes were identified in the Central Great Valley with 67 joined classes for the Great Valley at-large. Two-thirds of Great Valley at-large flow was defined by 12 classes. Winds flowed on-axis only 40% of the time. The Great Smoky Mountains helped create down-valley pressure-driven winds, downslope mountain breezes, and divergent air flow. The Cumberland Mountains and Plateau were associated with wind speed reductions in the Central Great Valley, Emory Gap Flow, weak thermally-driven winds, and northwesterly down sloping. Ridge-and-valley terrain enhanced wind direction reversals, pressure-driven winds, as well as locally and regionally produced thermally-driven flow.

Birdwell, Kevin R [ORNL

2011-05-01T23:59:59.000Z

417

Combination process for upgrading reduced crude  

SciTech Connect (OSTI)

A reduced crude conversion process is described for heavy oil feeds having Conradson carbon numbers above two, which process comprises contacting a heavy oil feed with a catalyst to form products comprising lower molecular weight hydrocarbons and coke-on-catalyst, the coke containing minor amounts of hydrogen, and thereafter regenerating the catalyst by removing at least a portion of the coke.

Hettinger, W.P. Jr.

1986-07-15T23:59:59.000Z

418

Reduced models of algae growth Heikki Haario,  

E-Print Network [OSTI]

Reduced models of algae growth Heikki Haario, Leonid Kalachev Marko Laine, Lappeenranta University of the phenomena studied. Here, in the case of algae growth modelling, we show how a systematic model reduction may: Algae growth modelling, asymptotic methods, model reduction, MCMC, Adaptive Markov chain Monte Carlo. 1

Bardsley, John

419

WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED,  

E-Print Network [OSTI]

Fuel oil and Turkey Based Biofuel Energy Rocovery 12,000 Industrial Waste $30,000 $500 $29,500 1500WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED, REUSED, RECYCLED OR CONSERVED IN 2006 WASTE TYPE DESCRIPTION DETAILS * Aerosol Can Disposal System Recycling 528 66 pounds of hazardous waste per unit $7

420

Light gas gun with reduced timing jitter  

DOE Patents [OSTI]

Gas gun with reduced timing jitter is disclosed. A gas gun having a prepressurized projectile held in place with a glass rod in compression is described. The glass rod is destroyed with an explosive at a precise time which allows a restraining pin to be moved and free the projectile. 4 figs.

Laabs, G.W.; Funk, D.J.; Asay, B.W.

1998-06-09T23:59:59.000Z

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Projection screen having reduced ambient light scattering  

DOE Patents [OSTI]

An apparatus and method for improving the contrast between incident projected light and ambient light reflected from a projection screen are described. The efficiency of the projection screen for reflection of the projected light remains high, while permitting the projection screen to be utilized in a brightly lighted room. Light power requirements from the projection system utilized may be reduced.

Sweatt, William C. (Albuquerque, NM)

2010-05-11T23:59:59.000Z

422

WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED,  

E-Print Network [OSTI]

WASTE DESCRIPTION TYPE OF PROJECT POUNDS REDUCED, REUSED, RECYCLED OR CONSERVED IN 2004 WASTE TYPE Brake Cleaner Recycling System Mercury Utility Devices Substitution 60 Hazardous Waste $1,750 $2,500 $1 of one PCB spill and clean-up event. Organic Solvents Substitution 678 Hazardous Waste $1,355 $36,500 $26

423

Kittiwakes strategically reduce investment in replacement clutches  

E-Print Network [OSTI]

Kittiwakes strategically reduce investment in replacement clutches Julien Gasparini1,*, Alexandre). In birds, egg production is lower in replacement clutches than in first clutches, but it is unknown whether the replacement clutch is produced) or from a strategic allocation of resources between the two breeding attempts

Alvarez, Nadir

424

Noble Metal-Free Reduced Graphene Oxide-ZnxCd1-xS Nanocomposite with Enhanced Solar Photocatalytic H2Production  

E-Print Network [OSTI]

solar energy by production of hydrogen from water splitting is of great importance from both theoretical strategy for solving simultaneously the incoming energy and environmental problems.2 So far, numerousNoble Metal-Free Reduced Graphene Oxide-ZnxCd1-xS Nanocomposite with Enhanced Solar Photocatalytic

Gong, Jian Ru

425

Indiana: the history and archaeology of an early Great Lakes propeller  

E-Print Network [OSTI]

-1873). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 1-4 Figure 1-5 Figure 1-6 Figure 1-7 Ericsson's early propeller-driven vessel Robert F. Stockton (1838). . . . . 13 Vandaiia (1841): the first propeller-schooner on the Great Lakes. . . . . . . . 15 Early Great Lakes passenger.... . Johnston, Hera Konstantinou, Michael A. Lang, John R. Stccle, John V. Stine, and George West; and 1993 field season: William H. Cohrs, Joseph R. Cozzi, Alan T. Flanigan, Peter Hentschel, Paul F. Johnston; John R. Steele, and John N. Stine. I am...

Robinson, David Stewart

1999-01-01T23:59:59.000Z

426

Reduced crude processing with Ashland's RCC process  

SciTech Connect (OSTI)

Ashland Oil has long recognized the need to improve the process for the direct conversion of residual feedstocks into transportation fuels and other lighter products. The reduced crude oil conversion (RCC) unit now under construction at the Catlettsburg, Kentucky, refinery was developed to meet these demands. The facility incorporates RCC process innovations and recent catalyst technology improvements, and provides increased operating flexibility. Heavier, higher-sulfur crude oils can be processed under several economically attractive scenarios. They allow for an excellent balance between the production of transportation fuels, and reduced amounts of heavy fractions. An outstanding feature of the RCC process is the highoctane quality of full-boiling-range gasoline that results when converting residual feedstocks.

Zandona, O.J.; Busch, L.E.; Hettinger, W.P.

1982-05-01T23:59:59.000Z

427

Reduced activation ferritic alloys for fusion  

SciTech Connect (OSTI)

Reduced activation martensitic alloys can now be developed with properties similar to commercial counterparts, and oxide dispersion strengthened alloys are under consideration. However, low chromium Bainitic alloys with vanadium additions undergo severe irradiation hardening at low irradiation temperatures and excessive softening at high temperatures, resulting in a very restricted application window. Manganese additions result in excessive embrittlement, as demonstrated by post-irradiation Charpy impact testing. The best composition range for martensitic alloys appears to be 7 to 9 Cr and 2 W, with swelling of minor concern and low temperature irradiation embrittlement perhaps eliminated. Therefore, reduced activation martensitic steels in the 7 to 9 Cr range should be considered leading contenders for structural materials applications in power-producing fusion machines.

Gelles, D.S. [Pacific Northwest Lab., Richland, VA (United States)

1992-12-31T23:59:59.000Z

428

Quantum cryptographic system with reduced data loss  

DOE Patents [OSTI]

A secure method for distributing a random cryptographic key with reduced data loss is disclosed. Traditional quantum key distribution systems employ similar probabilities for the different communication modes and thus reject at least half of the transmitted data. The invention substantially reduces the amount of discarded data (those that are encoded and decoded in different communication modes e.g. using different operators) in quantum key distribution without compromising security by using significantly different probabilities for the different communication modes. Data is separated into various sets according to the actual operators used in the encoding and decoding process and the error rate for each set is determined individually. The invention increases the key distribution rate of the BB84 key distribution scheme proposed by Bennett and Brassard in 1984. Using the invention, the key distribution rate increases with the number of quantum signals transmitted and can be doubled asymptotically. 23 figs.

Lo, H.K.; Chau, H.F.

1998-03-24T23:59:59.000Z

429

Soft torque rotary system reduces drillstring failures  

SciTech Connect (OSTI)

This paper reports that the use of the soft torque system has significantly reduced torque fluctuations (up to 80%), torsional drillstring vibrations, and bit slip-stick conditions to help reduce drillstring failures and improve penetration rates in deep directional wells. The system was instrumental in eliminating expensive ($5-10 million) drillstring failures on Well SL 531 No. 3, a complex directional well in Mobile Bay. The soft torque rotary system attenuates and interrupts the torsional oscillations of the drillstring and thus prevents the buildup of energy in torsional waves that are reflected back and forth between the bit and the rotary table. The soft torque rotary system can be installed on any rig equipped with an independent electronically driven rotary table or top drive. The system is relatively inexpensive and easy to install.

Javanmardi, K.; Gaspard, D. (Shell Offshore Inc., New Orleans, LA (United States))

1992-10-12T23:59:59.000Z

430

Methods of reducing vehicle aerodynamic drag  

SciTech Connect (OSTI)

A small scale model (length 1710 mm) of General Motor SUV was built and tested in the wind tunnel for expected wind conditions and road clearance. Two passive devices, rear screen which is plate behind the car and rear fairing where the end of the car is aerodynamically extended, were incorporated in the model and tested in the wind tunnel for different wind conditions. The conclusion is that rear screen could reduce drag up to 6.5% and rear fairing can reduce the drag by 26%. There were additional tests for front edging and rear vortex generators. The results for drag reduction were mixed. It should be noted that there are aesthetic and practical considerations that may allow only partial implementation of these or any drag reduction options.

Sirenko V.; Rohatgi U.

2012-07-08T23:59:59.000Z

431

Device for reducing vehicle aerodynamic resistance  

DOE Patents [OSTI]

A device for reducing vehicle aerodynamic resistance for vehicles having a generally rectangular body disposed above rear wheels, comprising a plurality of load bearing struts attached to the bottom of the rectangular body adjacent its sides, a plurality of opposing flat sheets attached to the load bearing struts, and angled flaps attached to the lower edge of the opposing sheets defining an obtuse angle with the opposing flat sheets extending inwardly with respect to the sides of the rectangular body to a predetermined height above the ground, which, stiffen the opposing flat sheets, bend to resist damage when struck by the ground, and guide airflow around the rear wheels of the vehicle to reduce its aerodynamic resistance when moving.

Graham, Sean C.

2006-08-22T23:59:59.000Z

432

Quantum cryptographic system with reduced data loss  

DOE Patents [OSTI]

A secure method for distributing a random cryptographic key with reduced data loss. Traditional quantum key distribution systems employ similar probabilities for the different communication modes and thus reject at least half of the transmitted data. The invention substantially reduces the amount of discarded data (those that are encoded and decoded in different communication modes e.g. using different operators) in quantum key distribution without compromising security by using significantly different probabilities for the different communication modes. Data is separated into various sets according to the actual operators used in the encoding and decoding process and the error rate for each set is determined individually. The invention increases the key distribution rate of the BB84 key distribution scheme proposed by Bennett and Brassard in 1984. Using the invention, the key distribution rate increases with the number of quantum signals transmitted and can be doubled asymptotically.

Lo, Hoi-Kwong (1309, Low Block, Lei Moon House Ap Lei Chau Estate, Hong Kong, HK); Chau, Hoi Fung (Flat C, 42nd Floor, Tower 1, University Heights 23 Pokfield Road, Pokfulam, Hong Kong, HK)

1998-01-01T23:59:59.000Z

433

Shallow Water Offshore Wind Optimization for the Great Lakes (DE-FOA-0000415) Final Report: A Conceptual Design for Wind Energy in the Great Lakes  

SciTech Connect (OSTI)

The primary objective of the project was to develop a innovative Gravity Base Foundation (GBF) concepts, including fabrication yards, launching systems and installation equipment, for a 500MW utility scale project in the Great Lakes (Lake Erie). The goal was to lower the LCOE by 25%. The project was the first to investigate an offshore wind project in the Great Lakes and it has furthered the body of knowledge for foundations and installation methods within Lake Erie. The project collected historical geotechnical information for Lake Erie and also used recently obtained data from the LEEDCo Icebreaker Project (FOA DE-EE0005989) geotechnical program to develop the conceptual designs. Using these data-sets, the project developed design wind and wave conditions from actual buoy data in order to develop a concept that would de-risk a project using a GBF. These wind and wave conditions were then utilized to create reference designs for various foundations specific to installation in Lake Erie. A project partner on the project (Weeks Marine) provided input for construction and costing the GBF fabrication and installation. By having a marine contractor with experience with large marine projects as part of the team provides credibility to the LCOE developed by NREL. NREL then utilized the design and construction costing information as part of the LCOE model. The report summarizes the findings of the project. Developed a cost model and baseline LCOE Documented Site Conditions within Lake Erie Developed Fabrication, Installation and Foundations Innovative Concept Designs Evaluated LCOE Impact of Innovations Developed Assembly line Rail System for GBF Construction and Staging Developed Transit-Inspired Foundation Designs which incorporated: Semi-Floating Transit with Supplemental Pontoons Barge mounted Winch System Developed GBF with Penetration Skirt Developed Integrated GBF with Turbine Tower Developed Turbine, Plant Layout and O&M Strategies The report details lowering LCOE by 22.3% and identified additional strategies that could further lower LCOE when building an utility scale wind farm in the Great Lakes.

Wissemann, Chris [Freshwater Wind I, LLC] [Freshwater Wind I, LLC; White, Stanley M [Stanley White Engineering LLC] [Stanley White Engineering LLC

2014-02-28T23:59:59.000Z

434

Reducing NOx in Fired Heaters and Boilers  

E-Print Network [OSTI]

-6, 2000 Reducing NOx in Fired Heaters Air Pollution Control and Boilers Keeping the environment clean Presented by Ashutosh Garg Furnace Improvements Low cost solutions for fired heaters Trace compounds ? Nitric oxides ? Carbon monoxide ? Sulfur... it is essential to estimate accurately baseline NOx emissions. ? This will establish each units current compliance status. ? Emissions ? Current excess air level ? Carbon monoxide ? Combustibles ? NOx corrected to 3% 02 314 ESL-IE-00-04-46 Proceedings...

Garg, A.

435

Renewable Energy Can Help Reduce Oil Dependency  

ScienceCinema (OSTI)

In a speech to the Economic Club of Kansas City on June 23, 2010, NREL Director Dan Arvizu takes a realistic look at how renewable energy can help reduce America's dependence on oil, pointing out that the country gets as much energy from renewable sources now as it does from offshore oil production. For a transcript, visit http://www.nrel.gov/director/pdfs/energy_overview_06_10.pdf

Arvizu, Dan

2013-05-29T23:59:59.000Z

436

Reduce Steam Trap Failures at Chambers Works  

E-Print Network [OSTI]

Ultrasonic Inspection At least 2 times per year Steam Trap Surveyor Submit reports to area management, energy team, and reliability engineers for each area every month Steam Trap Team Leader Control Plan ? Process Owner agrees...Reduce Steam Trap Failures at Chambers Works GB/BB Name: Cyndi Kouba Mentor/MBB: Andrew Degraff Team Members Michael Crowley(Site Energy Lead), (Charlie) Flanigan (Aramids-maintenance), Ben Snyder (Aramids-ATO), Michael Scruggs (Central...

Kouba, C.

437

Reduce generating costs and eliminate brownouts  

SciTech Connect (OSTI)

Improving the manoeuverability of a coal-fired plant to allow it to participate in primary frequency support will reduce generation cost and minimize brownouts. The challenge is to do so without compromising efficiency or emissions. This article describes an approach - activation of stored energy - that is cost-effective and applicable to both greenfield and brownfield installations. It requires a new control philosophy, plus the correct application of new level and flow measurement 'best practices'. 4 refs., 1 tab.

Nogaja, R.; Menezes, M. [Emerson Process Management (United States)

2007-06-15T23:59:59.000Z

438

Method for reducing ignition delay of fuels  

SciTech Connect (OSTI)

A method of reducing ignition delay /tau/, of fuels to negligible values and negligible differences is disclosed. Fuels conditioned to have such negligible values and differences are readily used in multiple fuel engines, such fuels self-ignite substantially instantaneously when injected into an oxidant, require substantially no heat transfer from the oxidant to effect the self-ignition, and the self-ignition is sufficient to sustain continued combustion.

Hoppie, L.O.

1984-05-15T23:59:59.000Z

439

Device for reducing vehicle aerodynamic resistance  

DOE Patents [OSTI]

A device for a vehicle with a pair of swinging rear doors, which converts flat sheets of pliable material hinged to the sides of the vehicle adjacent the rear thereof into effective curved airfoils that reduce the aerodynamic resistance of the vehicle, when the doors are closed by hand, utilizing a plurality of stiffeners disposed generally parallel to the doors and affixed to the sheets and a plurality of collapsible tension bearings struts attached to each stiffener and the adjacent door.

Graham, Sean C.

2005-02-15T23:59:59.000Z

440

Reducing Your Electricity Use | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »ExchangeDepartment ofManagementManagementReduce Hot Water Use

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Reducing emissions by addressing steam turbine inefficiencies  

SciTech Connect (OSTI)

This paper reports that inefficient steam turbines increase fossil plant emissions because additional fuel must be burned to meet the power output requirements. During a turbine outage, plant performance and maintenance staff make and prioritize repair decisions within tight time and budget constraints. This paper describes how Georgia Power identifies performance losses of degraded components in the steam path and determines their impact on heat rate. Turbine performance is assessed by a steam path audit program that Encotech has developed and make available to utilities. Georgia Power has conducted several operating tests that give good correlation with audit results. Georgia Power uses the audit information to make the most cost-effective repairs to maintain a low heat rate and to reduce emissions. The Clean Air Act presents electric utilities with the challenge of reducing emissions from fossil plants in the most cost-effective way possible. Meeting the stack emissions limitations often translates to large capital expenditures and increased cycle heat rate. One resource the electric utilities have to reduce the costly impact of compliance with the Clean Air Act is control over the efficiency of their steam turbines.

Harris, J.C. (Georgia Power Co., Atlanta, GA (United States)); Cioffi, D.H. (Encotech, Inc., Schenectady, NY (United States))

1992-01-01T23:59:59.000Z

442

Development of reduced crude cracking catalysts  

SciTech Connect (OSTI)

In 1974 OPEC imposed an embargo on oil to the United States and caused a rapid rise in the price of a barrel of oil. At the time of the embargo, Ashland imported a considerable portion of its oil from the Middle East, thus raising the question of oil availability. As the problem increased in severity, Messrs. George Meyer, Oliver Zandona and Llyod Busch, began to explore alternative ways of squeezing more product from a given barrel of crude. After considering many alternatives, they arrived at the innovative thought that it might be possible to catalytically crack the 1050{degree}F plus fraction of the barrel directly to gasoline which would in effect, give them an additional volume of crude oil. Also, if vacuum fractionation were eliminated and if the entire 650{degree}F plus (reduced crude) portion of the barrel processed, this would further reduce operating costs. With these objectives and some new process innovations in mind, they began reduced crude cracking experimentation in a small 12,000 B/D FCC operating unit at Louisville. It was from these goals, concepts and a small operating unit, that the RCC process was born.

Hettinger, W.P. Jr. (Ashland Petroleum Company, KY (USA))

1987-08-01T23:59:59.000Z

443

Universal decay rule for reduced widths  

SciTech Connect (OSTI)

Emission processes including {alpha} decay, heavy cluster decay, and proton and di-proton emission are analyzed in terms of the well-known factorization between the penetrability and the reduced width. By using a shifted harmonic oscillator plus Coulomb cluster-daughter interaction it is possible to derive a linear relation between the logarithm of the reduced width squared and the fragmentation potential, defined as the difference between the Coulomb barrier and the Q value. This relation is fulfilled with a good accuracy for transitions between ground states, as well as for most {alpha} decays to low-lying 2{sup +} excited states. The well-known Viola-Seaborg rule, connecting half-lives with the Coulomb parameter and the product between fragment charge numbers, as well as the Blendowske scaling rule, connecting the spectroscopic factor with the mass number of the emitted cluster, can be easily understood in terms of the fragmentation potential. It is shown that the recently evidenced two regions in the dependence of reduced proton half-lives versus the Coulomb parameter are directly connected with the corresponding regions of the fragmentation potential.

Delion, D. S. [Horia Hulubei National Institute of Physics and Nuclear Engineering, 407 Atomistilor, Bucharest-Magurele 077125 (Romania) and Academy of Romanian Scientists, 54 Splaiul Independentei, Bucharest 050094 (Romania)

2009-08-15T23:59:59.000Z

444

Capital improvements can contribute greatly to an airport's future success, but  

E-Print Network [OSTI]

description, cost estimate, federal programming sheets (available at www.mnaero.com), and start date. FederalCapital improvements can contribute greatly to an airport's future success, but they require a serious financial commit- ment by the airport owner. Planning ahead for capital improvements is critical

Minnesota, University of

445

The discovery of topological insulators and possible topological superconductors has greatly expanded research into  

E-Print Network [OSTI]

The discovery of topological insulators and possible topological superconductors has greatly Superconductor, a Copper-doped Topological Insulator: Cu1/4Bi2Se3 Ben J. Lawson1, Y. S. Hor2, J. Mannhart3, Lu Li in CuxBi2Se3 and its implications for pairing in the undoped topological insulator" PRL, 104, 057001

Weston, Ken

446

Korarchaeota Diversity, Biogeography, and Abundance in Yellowstone and Great Basin Hot Springs and  

E-Print Network [OSTI]

, Christian A. Ross1 , Everett L. Shock2,3 , Amanda J. Williams1 , Hilairy E. Hartnett2,3 , Austin I. McDonald1¤ , Jeff R. Havig2 , Brian P. Hedlund1 * 1 School of Life Sciences, University of Nevada, Las Vegas, Williams AJ, et al. (2012) Korarchaeota Diversity, Biogeography, and Abundance in Yellowstone and Great

Ahmad, Sajjad

447

Downscaling Satellite Soil Moisture Estimates in the Southern Great Plains through a  

E-Print Network [OSTI]

2009 #12;Motivation · Soil moisture () is a key variable controlling energy and water fluxes among soil components of the energy balance are not di- rectly impacted by soil moisture. Small (10 W m2 ) errors in GDownscaling Satellite Soil Moisture Estimates in the Southern Great Plains through a Calibrated

Vivoni, Enrique R.

448

Development, implementation, and skill assessment of the NOAA/NOS Great Lakes Operational Forecast System  

E-Print Network [OSTI]

Development, implementation, and skill assessment of the NOAA/NOS Great Lakes Operational Forecast Lakes Operational Forecast System (GLOFS) uses near-real-time atmospheric observa- tions and numerical weather prediction forecast guidance to produce three-dimensional forecasts of water temperature

449

Change in biomass of benthic and planktonic algae along a disturbance gradient for 24 Great  

E-Print Network [OSTI]

Change in biomass of benthic and planktonic algae along a disturbance gradient for 24 Great Lakes. The PC1 site score was significantly related to both periphyton and phytoplankton biomass, respectively accounted for 18% of the variation in epiphyton biomass. Periphytic and epiphytic biomass were negatively

McMaster University

450

AEROSOL CHEMICAL COMPOSITION CHARACTERIZATION AT THE ARM SOUTHERN GREAT PLAINS (SGP) SITE USING AN AEROSOL CHEMICAL  

E-Print Network [OSTI]

AEROSOL CHEMICAL COMPOSITION CHARACTERIZATION AT THE ARM SOUTHERN GREAT PLAINS (SGP) SITE USING AN AEROSOL CHEMICAL SPECIATION MONITOR Yin-Nan Lee1 , Fan Mei1 , Stephanie DeJong1 , Anne Jefferson2 1 Atmospheric Sciences Division, Brookhaven National Lab, Upton, NY 2 CIRES, University of Colorado, Boulder, CO

451

Tycho Brahe made observations of the motions of the planets from his great observatory on  

E-Print Network [OSTI]

Tycho Brahe made observations of the motions of the planets from his great observatory,and understood the importance of random and systematic errors in his observations. In 1600Tycho Brahe employed such a diligent observer inTycho Brahe that his observations convicted this Ptolemaic calculation of an error of 8

452

A model for simulation of the climate and hydrology of the Great Lakes basin  

E-Print Network [OSTI]

. One factor that makes the net supply of water (precipitation minus evaporation) to the Great Lakes troublesome are the tendency for unrealistically low pressure at mean sea level and for persistent heavy low stratus clouds. INDEX TERMS: 1620 Global Change: Climate dynamics (3309); 1655 Global Change: Water cycles

453

THE GREAT DEBATE: STARBURSTS AS THE ENERGY SOURCE OF ULTRALUMINOUS INFRARED GALAXIES  

E-Print Network [OSTI]

THE GREAT DEBATE: STARBURSTS AS THE ENERGY SOURCE OF ULTRALUMINOUS INFRARED GALAXIES R. D. JOSEPH response (from someone aged less than 30 yr) will be, "Wow! Cool!" On the other hand, if you reply, "I am as the principal and dominant energy source in ULIRGs. 2. Evidence that ULIRGS Are Predominantly Powered by Star

Joseph, Robert D.

454

Comparison between active sensor and radiosonde cloud boundaries over the ARM Southern Great Plains site  

E-Print Network [OSTI]

of radar, lidar, and ceilometer data collected at the Atmospheric Radiation Measurements Southern Great [1995] and Chernykh and Eskridge [1996]. The lidar and ceilometer data yield lowest-level cloud base. These quantities are used to assess the accuracy of coincident cloud base heights obtained from radar and the two

455

Planet. Space Sri. Vol. 30, No. 8. pp.&g-854, 1982 Printed in Great Britain.  

E-Print Network [OSTI]

Planet. Space Sri. Vol. 30, No. 8. pp.&g-854, 1982 Printed in Great Britain. 0032-0533/82/08084946s, and the Lyman-alpha dayglow of Saturn when analyzed in conjunction with photochemical models of the hydrocarbons and energy budget, of the upper atmospheric composition and thermal structure of Jupiter (Atreya, Donahue

Atreya, Sushil

456

Planet. Space Sci., Vol. 37, No. I, pp. 109-129, 1989 Printed in Great Britain.  

E-Print Network [OSTI]

spectra and model predictions. Differences occur at low energies (below 500 eV) in the structurePlanet. Space Sci., Vol. 37, No. I, pp. 109-129, 1989 Printed in Great Britain. ANGULAR DEPENDENT scattering of electrons resulting in changes of pitch angle, and degradation in energy as the electrons

Lummerzheim, Dirk

457

Ultrafast Switching of Coherent Electronic Excitation: Great Promise for Reaction Control  

E-Print Network [OSTI]

With the advent of femtosecond laser pulses the temporal aspect of the interplay of light and molecular dynamics pulses [4] are the suitable tools to exert microscopic control on molecular dynamics at the quantum levelUltrafast Switching of Coherent Electronic Excitation: Great Promise for Reaction Control

Peinke, Joachim

458

People love watching TV and going to the movies. This is great news for multimedia  

E-Print Network [OSTI]

People love watching TV and going to the movies. This is great news for multimedia researchers that rarely gets addressed in the research is, Why do people love to consume TV programs and movies? Current, which lift them out of their ordinary exis- tence. Viewers develop strong attachments

Zimmerman, John

459

Why is this Important? The Great Lakes are the nation's single most important aquatic resource  

E-Print Network [OSTI]

.S. D EPARTMENT OF COMM E R CE Drinking Water Swimming & Recreation Toxic Algae Bloom Lake Circulation in the Great Lakes, including algae. When high nutrient or light levels are present, these organisms can a toxin that poses human health risks. The development of the Lake Erie Experiment Harmful Algal Bloom

460

Late-summer phytoplankton in western Lake Erie (Laurentian Great Lakes): bloom distributions, toxicity,  

E-Print Network [OSTI]

Late-summer phytoplankton in western Lake Erie (Laurentian Great Lakes): bloom distributions to environmental parameters in western Lake Erie during late-summer (2003­2005). Spatially explicit distributions on earth and are an invaluable natural resource. Lake Erie, the shallowest and smallest of the Lakes

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

NOAA Technical Memorandum ERL GLERL-26 SUMMARY OF GREAT LAKES WEATHER AND ICE CONDITIONS,  

E-Print Network [OSTI]

.1.3 Satellite Imagery 3.2 General Description 3.2.1 Fall Cooling Phase 3.2.2 Ice Formation and Breakup Phases 3NOAA Technical Memorandum ERL GLERL-26 SUMMARY OF GREAT LAKES WEATHER AND ICE CONDITIONS, WINTER Degree-Days 2.3 Comparison With Previous Winters 3. SIJNNARY OF ICE CONDITIONS 3.1 Data Collection

462

ANIMATION OF THE NORMAL ICE CYCLE OF THE LAURENTIAN GREAT LAKES OF NORTH AMERICA  

E-Print Network [OSTI]

OF ANNUAL ICE CYCLE 1. Fall Cooling 2. Ice Formation 3. Ice Thickness 4. Seasonal Maximum Ice Cover 5ANIMATION OF THE NORMAL ICE CYCLE OF THE LAURENTIAN GREAT LAKES OF NORTH AMERICA R.A. Assel and J describes an interactive menu- driven computer tutorial on the contemporary ice cover climatology

463

Development of the Great Lakes Ice-circulation Model (GLIM): Application to Lake Erie in 20032004  

E-Print Network [OSTI]

due to strong cooling and wind mixing. Prediction of the lake's ice extent (i.e., ice coverDevelopment of the Great Lakes Ice-circulation Model (GLIM): Application to Lake Erie in 2003: Received 4 May 2009 Accepted 30 November 2009 Communicated by Dr. Ram Yerubandi Index words: Coupled Ice

464

NOAA Technical Memorandum ERL GLERL-20 SUMMARY OF GREAT LAKES WEATHER AND ICE CONDITIONS,  

E-Print Network [OSTI]

Cooling Phase 3.2.2 Ice Formation and Breakup Phases 3.2.3 The Ice Cycle on Lake Superior 3.2.4 The IceNOAA Technical Memorandum ERL GLERL-20 SUMMARY OF GREAT LAKES WEATHER AND ICE CONDITIONS, WINTER of this NOAA Environmental Research Laboratories publication. ii #12;LANDSAT fake color image of ice cover

465

Using Open Source Geospatial Tools to Create OSM Web Services for Great Britain  

E-Print Network [OSTI]

OSMGB OSMGB Using Open Source Geospatial Tools to Create OSM Web Services for Great Britain A use case of integrating a variety of open-source geospatial tools is presented in this paper of the volunteer nature of the commu- nity, many open-source geospatial tools have been developed around OSM

Kbben, Barend

466

The crystallographic texture of a great number of polyethylene films manufactured by the film  

E-Print Network [OSTI]

The crystallographic texture of a great number of polyethylene films manufactured by the film polymer films (fig. 1). It is essentially dedicated to polyethylene, espe- cially for packaging in polyethylene blown films J.-M. Haudin, J.-M. André, G. Bellet, B. Monasse, P. Navard ?cole des Mines de Paris

Paris-Sud XI, Université de

467

Anthony Wayne: The History and Archaeology of an Early Great Lakes Steamboat  

E-Print Network [OSTI]

The Great Lakes side-wheel steamboat Anthony Wayne was built in 1837 at Perrysburg, OH and participated in lakes shipping during a time when such vessels were experiencing their heyday. Designed as a passenger and cargo carrier, the steamer spent 13...

Krueger, Bradley Alan

2012-07-16T23:59:59.000Z

468

www.carbon-business.com 67 THERE'S REALLY NOT a great deal of guidance for  

E-Print Network [OSTI]

thirty BELC companies and developed a model for business to address climate change as a business problem and operations, the sustainable consumption of resources, improving the efficiencies of processes and methodswww.carbon-business.com 67 THERE'S REALLY NOT a great deal of guidance for business when it comes

Hoffman, Andrew J.

469

GRC Transactions, Vol. 31, 2007 Geothermal, energy resources, Great Basin, GPS, geodesy,  

E-Print Network [OSTI]

GRC Transactions, Vol. 31, 2007 391 Keywords Geothermal, energy resources, Great Basin, GPS, and will be incorporated in future models. Introduction Geothermal energy resources have long been associated of active crustal deformation and its spatial relationship to active geothermal systems in the northern

470

Histology of Herniations through the Body Wall and Cuticle of Zooplankton from the Laurentian Great Lakes  

E-Print Network [OSTI]

, University of Michigan, Ann Arbor, Michigan 48109; Department of Pathology, Veterans Administration Medical and then preserved. A fresh sam- ple was collected from Lake Michigan at 3 m on 2 June 1999, placed on ice Center, Ann Arbor, Michigan 48105; and Great Lakes Environmental Research Laboratory, National Oceanic

471

The Great Lakes at a Crossroads Preparing for a Changing Climate  

E-Print Network [OSTI]

/index.html Communication Tactics for Climate Change: www.futerra.co.uk/downloads/NewRules:NewGame.pdf Union of ConcernedThe Great Lakes at a Crossroads Preparing for a Changing Climate International Association Climate Change Science 2007 Intergovernmental Panel on Climate Change (IPCC) Assessment Report: www

472

Assessing Naturalness in Northern Great Lakes Forests Based on Historical Land-Cover and Vegetation Changes  

E-Print Network [OSTI]

was developed to assess to what degree landscapes represent a natural state. Protected areas are often regarded Land-use history Land-use change Naturalness Logging Great Lakes Protected areas Introduction the question to what degree protected areas represent a natural state. To assess this question conservation

473

Great Lakes Spatially Distributed Watershed Model of Water and Materials Runoff Thomas E. Croley II  

E-Print Network [OSTI]

Great Lakes Spatially Distributed Watershed Model of Water and Materials Runoff Thomas E. Croley II.S. Environmental Protection Agency (EPA) has identified contaminated sediments, urban runoff and storm sewers there are no integrated spatially distributed physically based watershed-scale hydrological/water quality models available

474

FIRE HISTORY AT THE EASTERN GREAT PLAINS MARGIN, MISSOURI RIVER LOESS HILLS  

E-Print Network [OSTI]

FIRE HISTORY AT THE EASTERN GREAT PLAINS MARGIN, MISSOURI RIVER LOESS HILLS Michael C. Stambaugh-Columbia Columbia, MO 65211 stambaughm@missouri.edu and Daniel C. Dey United States Forest Service, North Central Hills of northwest Missouri. We sampled 33 bur oak (Quercus macrocarpa Michx.), chinkapin oak (Q

Stambaugh, Michael C

475

Estimating the return times of great Himalayan earthquakes in eastern Nepal: Evidence  

E-Print Network [OSTI]

Estimating the return times of great Himalayan earthquakes in eastern Nepal: Evidence from the Patu, Kathmandu, Nepal, 3 Earth Observatory of Singapore, Nanyang Technological University, Singapore, Singapore not documented the occurrence of several similar events at the same location. In east central Nepal, however

Klinger, Yann

476

On the study of wind energy at great heights using remote sensing techniques  

E-Print Network [OSTI]

On the study of wind energy at great heights using remote sensing techniques Alfredo Pe~na1 by the wind energy industry due to the high sensitivity that the wind characteristics have on the performance Dong energy, Dong Energy, Kraftværksvej 53, DK-7000, Fredericia, Denmark e-mail: alfredo

477

NOAA GREAT LAKES COASTAL FORECASTING SYSTEM Forecasts (up to 5 days in the future)  

E-Print Network [OSTI]

conditions for up to 5 days in the future. These forecasts are run twice daily, and you can step through are generated every 6 hours and you can step backward in hourly increments to view conditions over the previousNOAA GREAT LAKES COASTAL FORECASTING SYSTEM Forecasts (up to 5 days in the future) and Nowcasts

478

Robotics & Computerlntegrated Manufacturing, Vol. 9, No.6, pp. 505-511, 1992 Printed in Great Britain  

E-Print Network [OSTI]

involving industrial robots has been found essential for smaller manufacturing lots with more frequent model workcell3 or to predict the error outcome of a robot in precision applications such as in assemblyRobotics & Computer·lntegrated Manufacturing, Vol. 9, No.6, pp. 505-511, 1992 Printed in Great

Yao, Y. Lawrence

479

Copper has proven to be a metal of great benefit to people throughout history.  

E-Print Network [OSTI]

Copper has proven to be a metal of great benefit to people throughout history. Copper has been molded into many instru- ments such as pots, weapons and jewelry. In recent history, copper and its alloys have been fashioned into plumbing pipes and fixtures. Although these applications of copper

480

Drought experience and cavitation resistance in six shrubs from the Great Basin, Utah  

E-Print Network [OSTI]

Drought experience and cavitation resistance in six shrubs from the Great Basin, Utah Uwe G. Hacke capability of the xylem. This is due to drought-induced cavitation. We used the centrifuge method to measure the vulnerability of root and stem xylem to cavitation in six native shrub species. The shrubs fall into three

Hacke, Uwe

Note: This page contains sample records for the topic "greatly reduced rotor" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Eggs in the Nest The last several years have produced a great deal of ev-  

E-Print Network [OSTI]

Eggs in the Nest The last several years have produced a great deal of ev- idence supporting clusters variously called germ cell nests, germ cell cysts, or germ cell syncytia (5, 7). The utility cell nests persist until a few days after birth in the mouse, when the syncytium breaks down

Mayo, Kelly E.

482

Atmospheric Mercury in the Great Lakes Region An Evaluation of the Community Multiscale Air Quality  

E-Print Network [OSTI]

Atmospheric Mercury in the Great Lakes Region An Evaluation of the Community Multiscale Air Quality Tracey Holloway #12;i Abstract Atmospheric mercury is a significant source for methylmercury (Me. In order to control MeHg exposures, policy-makers need a clear understanding of the atmospheric mercury

Wisconsin at Madison, University of

483

FALL/WINTER 2011 11 great deal of planning is required  

E-Print Network [OSTI]

of the needed transit trips for a given day. Extraboard-Driver Workforce Planning for Bus Transit Operations that help monitor bus transit workforce efficiency and support better transit workforce planning; to analyzeFALL/WINTER 2011 11 A great deal of planning is required to provide safe and reliable bus service

Gupta, Diwakar

484

Low-rank coal research: Volume 3, Combustion research: Final report. [Great Plains  

SciTech Connect (OSTI)

Volume III, Combustion Research, contains articles on fluidized bed combustion, advanced processes for low-rank coal slurry production, low-rank coal slurry combustion, heat engine utilization of low-rank coals, and Great Plains Gasification Plant. These articles have been entered individually into EDB and ERA. (LTN)

Mann, M. D.; Hajicek, D. R.; Zobeck, B. J.; Kalmanovitch, D. P.; Potas, T. A.; Maas, D. J.; Malterer, T. J.; DeWall, R. A.; Miller, B. G.; Johnson, M. D.

1987-04-01T23:59:59.000Z

485

www.physicstoday.org November 2012 Physics Today 59 Nuclear energy can provide great  

E-Print Network [OSTI]

www.physicstoday.org November 2012 Physics Today 59 Nuclear energy can provide great The Nuclear on keeping costs and book length in check. For example, most of the graphics use gray- scale, with only a few pages in the cen- ter providing color plates. In addition, in many places additional graphics could have

486

96 International THE WORLD IN 2OO5 he new millennium opened with great expectations.  

E-Print Network [OSTI]

through trade policy, increased official development assistance (oda) and technology transfer to extend96 International THE WORLD IN 2OO5 T he new millennium opened with great expectations. When 147 the benefits of globalisation and new technologies to the world's poorest people, with quantified targets

487

Classification of Annual Great Lakes Ice Cycles: Winters of 19732002* RAYMOND A. ASSEL  

E-Print Network [OSTI]

Classification of Annual Great Lakes Ice Cycles: Winters of 19732002* RAYMOND A. ASSEL National (Manuscript received 12 July 2004, in final form 13 June 2005) ABSTRACT Annual seasonal average ice cover from 1973 to 2002 and associated dates of first ice, last ice, and ice duration are presented and discussed

488

Developing Great Lakes Ice Model (GLIM) using CIOM (Coupled Ice-Ocean Model) in Lake Erie  

E-Print Network [OSTI]

Developing Great Lakes Ice Model (GLIM) using CIOM (Coupled Ice- Ocean Model) in Lake Erie Primary of the ice-ocean models, assistance with development of project reports and scientific presentations will first start the implementation of the CIOM in Lake Erie, assemble satellite observations of ice cover

489

Satellite SAR Remote Sensing of Great Lakes Ice Cover, Part 2. Ice Classification and Mapping  

E-Print Network [OSTI]

Satellite SAR Remote Sensing of Great Lakes Ice Cover, Part 2. Ice Classification and Mapping (freshwater) ice types using the Jet Propulsion Laboratory C-band scatterometer, together with surface-based ice physical characterization measurements and environmental parameters, were acquired concurrently

490

IMPLICATIONS OF CO, GLOBAL WARMING O N GREAT LAKES ICE COVER  

E-Print Network [OSTI]

IMPLICATIONS OF CO, GLOBAL WARMING O N GREAT LAKES ICE COVER RAYMOND A. ASSEL US. Department to project daily mean basin ice cover and annual ice cover duration for Lakes Superior and Erie. Models were), and the Oregon State University (OSU)general circulationmodels. Ice cover estimateswere made for the West

491

[ ]May 2014 Portland cement concrete (PCC) overlays have been used with great success in many locations  

E-Print Network [OSTI]

accelerated pavement testing on bonded concrete overlay pavements to be constructed at the Pavement Research testing; evaluate the structural bearing capacity of the concrete overlay pavement structures[ ]May 2014 PROBLEM Portland cement concrete (PCC) overlays have been used with great success

Harms, Kyle E.

492

Lack of conservation effort rapidly increases African great ape extinction risk  

E-Print Network [OSTI]

, Leipzig, Germany 3 Fauna Flora International 4 Wildlife Conservation Society 5 Garamba National ParkLETTER Lack of conservation effort rapidly increases African great ape extinction risk Sandra, Democratic Republic of Congo 6 Ghana Wildlife Society 7 Federal University of Technology, Akure, Nigeria 8

493

Bad money and distributive conflict: is stagflation coming back after the great depression?  

E-Print Network [OSTI]

1 Bad money and distributive conflict: is stagflation coming back after the great depression? Angel is that bad money has been (endogenously) delivered which did not lead to a proportionate increase of real to limit the artificial increase of assets prices, the circulating bad money may trigger a generalized

Paris-Sud XI, Université de

494

THE EFFECT OF DOMINANT GRASS SPECIES ON NITROGEN CYCLING IN GREAT SIPPEWISSETT SALT MARSH SEDIMENTS  

E-Print Network [OSTI]

of the salt marsh. To do this, I studied three dominant high-marsh grass species: Phragmites australis alterniflora, S. patens, Phragmites australis, nitrogen cycling, Great Sippewissett Marsh INTRODUCTION: Phragmites australis. Phragmites is a common reed that grows in dense, often monoculture stands that achieve

Vallino, Joseph J.

495

Zigzag laser with reduced optical distortion  

DOE Patents [OSTI]

The architecture of the present invention has been driven by the need to solve the beam quality problems inherent in Brewster's angle tipped slab lasers. The entrance and exit faces of a solid state slab laser are cut perpendicular with respect to the pump face, thus intrinsically eliminating distortion caused by the unpumped Brewster's angled faces. For a given zigzag angle, the residual distortions inherent in the remaining unpumped or lightly pumped ends may be reduced further by tailoring the pump intensity at these ends. 11 figures.

Albrecht, G.F.; Comaskey, B.; Sutton, S.B.

1994-04-19T23:59:59.000Z

496

Zigzag laser with reduced optical distortion  

DOE Patents [OSTI]

The architecture of the present invention has been driven by the need to solve the beam quality problems inherent in Brewster's angle tipped slab lasers. The entrance and exit faces of a solid state slab laser are cut perpendicular with respect to the pump face, thus intrinsically eliminating distortion caused by the unpumped Brewster's angled faces. For a given zigzag angle, the residual distortions inherent in the remaining unpumped or lightly pumped ends may be reduced further by tailoring the pump intensity at these ends.

Albrecht, Georg F. (Livermore, CA); Comaskey, Brian (Stockton, CA); Sutton, Steven B. (Manteca, CA)

1994-01-01T23:59:59.000Z

497

Reducing Regulatory Burden | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September 15,2015 |Rebecca MatulkaDeliveryUpdatedRFI Reducing

498

Reducing Energy Loss | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergyDepartmentEnergy DataRemediated | DepartmentRecruitPumpingStudyReducing

499

Reducing Photovoltaic Costs | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergyDepartmentEnergy DataRemediated |Reducing LED Costs Through

500

Reducing Petroleum Despendence in California: Uncertainties About  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L dDepartmentnews-flashes Office ofof EnergyReducing Peak Demand