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Sample records for windspeed 90m height

  1. Recovery Act-Funded 90-m Blade Test Facility Commissioned May...

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

    Recovery Act-Funded 90-m Blade Test Facility Commissioned May 18, 2011 Recovery Act-Funded 90-m Blade Test Facility Commissioned May 18, 2011 May 20, 2011 - 3:06pm Addthis This is ...

  2. Recovery Act-Funded 90-m Blade Test Facility Commissioned May 18, 2011

    Energy.gov [DOE]

    The Wind Technology Testing Center (WTTC) in Boston, Massachusetts, now offers a full suite of certification tests for turbine blades up to 90 m in length as the state-of-the-art facility opened May 18, 2011.

  3. Recovery Act-Funded 90-m Blade Test Facility Commissioned May...

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

    suite of certification tests for turbine blades up to 90 m in length as the state-of-the-art facility opened May 18, 2011. The center is the first commercial large blade test...

  4. Wind plant capacity credit variations: A comparison of results using multiyear actual and simulated wind-speed data

    SciTech Connect

    Milligan, M.R.

    1997-12-31

    Although it is widely recognized that variations in annual wind energy capture can be significant, it is not clear how significant this effect is on accurately calculating the capacity credit of a wind plant. An important question is raised concerning whether one year of wind data is representative of long-term patterns. This paper calculates the range of capacity credit measures based on 13 years of actual wind-speed data. The results are compared to those obtained with synthetic data sets that are based on one year of data. Although the use of synthetic data sets is a considerable improvement over single-estimate techniques, this paper finds that the actual inter-annual variation in capacity credit is still understated by the synthetic data technique.

  5. PULSE HEIGHT ANALYZER

    DOEpatents

    Goldsworthy, W.W.

    1958-06-01

    A differential pulse-height discriminator circuit is described which is readily adaptable for operation in a single-channel pulse-height analyzer. The novel aspect of the circuit lies in the specific arrangement of differential pulse-height discriminator which includes two pulse-height discriminators having a comnnon input and an anticoincidence circuit having two interconnected vacuum tubes with a common cathode resistor. Pulses from the output of one discriminator circuit are delayed and coupled to the grid of one of the anticoincidence tubes by a resistor. The output pulses from the other discriminator circuit are coupled through a cathode follower circuit, which has a cathode resistor of such value as to provide a long time constant with the interelectrode capacitance of the tube, to lenthen the output pulses. The pulses are then fed to the grid of the other anticoincidence tube. With such connections of the circuits, only when the incoming pulse has a pesk value between the operating levels of the two discriminators does an output pulse occur from the anticoincidence circuit.

  6. Could crop height affect the wind resource at agriculturally productive wind farm sites?

    SciTech Connect

    Vanderwende, Brian; Lundquist, Julie K.

    2015-11-07

    The collocation of cropland and wind turbines in the US Midwest region introduces complex meteorological interactions that could influence both agriculture and wind-power production. Crop management practices may affect the wind resource through alterations of land-surface properties. We use the weather research and forecasting (WRF) model to estimate the impact of crop height variations on the wind resource in the presence of a large turbine array. A hypothetical wind farm consisting of 121 1.8-MW turbines is represented using the WRF model wind-farm parametrization. We represent the impact of selecting soybeans rather than maize by altering the aerodynamic roughness length in a region approximately 65 times larger than that occupied by the turbine array. Roughness lengths of 0.1 and 0.25 m represent the mature soy crop and a mature maize crop, respectively. In all but the most stable atmospheric conditions, statistically significant hub-height wind-speed increases and rotor-layer wind-shear reductions result from switching from maize to soybeans. Based on simulations for the entire month of August 2013, wind-farm energy output increases by 14 %, which would yield a significant monetary gain. Further investigation is required to determine the optimal size, shape, and crop height of the roughness modification to maximize the economic benefit and minimize the cost of such crop-management practices. As a result, these considerations must be balanced by other influences on crop choice such as soil requirements and commodity prices.

  7. DIFFERENTIAL PULSE HEIGHT DISCRIMINATOR

    DOEpatents

    Test, L.D.

    1958-11-11

    Pulse-height discriminators are described, specifically a differential pulse-height discriminator which is adapted to respond to pulses of a band of amplitudes, but to reject pulses of amplitudes greater or less than tbe preselected band. In general, the discriminator includes a vacuum tube having a plurality of grids adapted to cut off plate current in the tube upon the application of sufficient negative voltage. One grid is held below cutoff, while a positive pulse proportional to the amplltude of each pulse is applled to this grid. Another grid has a negative pulse proportional to the amplitude of each pulse simultaneously applied to it. With this arrangement the tube will only pass pulses which are of sufficlent amplitude to counter the cutoff bias but not of sufficlent amplitude to cutoff the tube.

  8. PULSE HEIGHT ANALYZER

    DOEpatents

    Johnstone, C.W.

    1958-01-21

    An anticoincidence device is described for a pair of adjacent channels of a multi-channel pulse height analyzer for preventing the lower channel from generating a count pulse in response to an input pulse when the input pulse has sufficient magnitude to reach the upper level channel. The anticoincidence circuit comprises a window amplifier, upper and lower level discriminators, and a biased-off amplifier. The output of the window amplifier is coupled to the inputs of the discriminators, the output of the upper level discriminator is connected to the resistance end of a series R-C network, the output of the lower level discriminator is coupled to the capacitance end of the R-C network, and the grid of the biased-off amplifier is coupled to the junction of the R-C network. In operation each discriminator produces a negative pulse output when the input pulse traverses its voltage setting. As a result of the connections to the R-C network, a trigger pulse will be sent to the biased-off amplifier when the incoming pulse level is sufficient to trigger only the lower level discriminator.

  9. Could crop height affect the wind resource at agriculturally productive wind farm sites?

    DOE PAGES [OSTI]

    Vanderwende, Brian; Lundquist, Julie K.

    2015-11-07

    The collocation of cropland and wind turbines in the US Midwest region introduces complex meteorological interactions that could influence both agriculture and wind-power production. Crop management practices may affect the wind resource through alterations of land-surface properties. We use the weather research and forecasting (WRF) model to estimate the impact of crop height variations on the wind resource in the presence of a large turbine array. A hypothetical wind farm consisting of 121 1.8-MW turbines is represented using the WRF model wind-farm parametrization. We represent the impact of selecting soybeans rather than maize by altering the aerodynamic roughness length inmore » a region approximately 65 times larger than that occupied by the turbine array. Roughness lengths of 0.1 and 0.25 m represent the mature soy crop and a mature maize crop, respectively. In all but the most stable atmospheric conditions, statistically significant hub-height wind-speed increases and rotor-layer wind-shear reductions result from switching from maize to soybeans. Based on simulations for the entire month of August 2013, wind-farm energy output increases by 14 %, which would yield a significant monetary gain. Further investigation is required to determine the optimal size, shape, and crop height of the roughness modification to maximize the economic benefit and minimize the cost of such crop-management practices. As a result, these considerations must be balanced by other influences on crop choice such as soil requirements and commodity prices.« less

  10. ARM - Measurement - Cloud base height

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

    base height ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud base height For a given cloud or cloud layer, the lowest level of the atmosphere where cloud properties are detectable. Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all

  11. MULTICHANNEL PULSE-HEIGHT ANALYZER

    DOEpatents

    Russell, J.T.; Lefevre, H.W.

    1958-01-21

    This patent deals with electronic computing circuits and more particularly to pulse-height analyzers used for classifying variable amplitude pulses into groups of different amplitudes. The device accomplishes this pulse allocation by by converting the pulses into frequencies corresponding to the amplitudes of the pulses, which frequencies are filtered in channels individually pretuned to a particular frequency and then detected and recorded in the responsive channel. This circuit substantially overcomes the disadvantages of prior annlyzers incorporating discriminators pre-set to respond to certain voltage levels, since small variation in component values is not as critical to satisfactory circuit operation.

  12. Estimating vehicle height using homographic projections

    DOEpatents

    Cunningham, Mark F; Fabris, Lorenzo; Gee, Timothy F; Ghebretati, Jr., Frezghi H; Goddard, James S; Karnowski, Thomas P; Ziock, Klaus-peter

    2013-07-16

    Multiple homography transformations corresponding to different heights are generated in the field of view. A group of salient points within a common estimated height range is identified in a time series of video images of a moving object. Inter-salient point distances are measured for the group of salient points under the multiple homography transformations corresponding to the different heights. Variations in the inter-salient point distances under the multiple homography transformations are compared. The height of the group of salient points is estimated to be the height corresponding to the homography transformation that minimizes the variations.

  13. ARM - Measurement - Planetary boundary layer height

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

    govMeasurementsPlanetary boundary layer height ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Planetary boundary layer height Top of the planetary boundary layer; also known as depth or height of the mixing layer. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each

  14. Raman lidar/AERI PBL Height Product (Dataset) | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Raman lidarAERI PBL Height Product Title: Raman lidarAERI PBL Height Product Planetary Boundary Layer (PBL) heights have been computed using potential temperature profiles ...

  15. Raman lidar/AERI PBL Height Product

    DOE Data Explorer

    Ferrare, Richard

    2012-12-14

    Planetary Boundary Layer (PBL) heights have been computed using potential temperature profiles derived from Raman lidar and AERI measurements. Raman lidar measurements of the rotational Raman scattering from nitrogen and oxygen are used to derive vertical profiles of potential temperature. AERI measurements of downwelling radiance are used in a physical retrieval approach (Smith et al. 1999, Feltz et al. 1998) to derive profiles of temperature and water vapor. The Raman lidar and AERI potential temperature profiles are merged to create a single potential temperature profile for computing PBL heights. PBL heights were derived from these merged potential temperature profiles using a modified Heffter (1980) technique that was tailored to the SGP site (Della Monache et al., 2004). PBL heights were computed on an hourly basis for the period January 1, 2009 through December 31, 2011. These heights are provided as meters above ground level.

  16. Raman lidar/AERI PBL Height Product

    DOE Data Explorer

    Ferrare, Richard

    Planetary Boundary Layer (PBL) heights have been computed using potential temperature profiles derived from Raman lidar and AERI measurements. Raman lidar measurements of the rotational Raman scattering from nitrogen and oxygen are used to derive vertical profiles of potential temperature. AERI measurements of downwelling radiance are used in a physical retrieval approach (Smith et al. 1999, Feltz et al. 1998) to derive profiles of temperature and water vapor. The Raman lidar and AERI potential temperature profiles are merged to create a single potential temperature profile for computing PBL heights. PBL heights were derived from these merged potential temperature profiles using a modified Heffter (1980) technique that was tailored to the SGP site (Della Monache et al., 2004). PBL heights were computed on an hourly basis for the period January 1, 2009 through December 31, 2011. These heights are provided as meters above ground level.

  17. MULTI-CHANNEL PULSE HEIGHT ANALYZER

    DOEpatents

    Boyer, K.; Johnstone, C.W.

    1958-11-25

    An improved multi-channel pulse height analyzer of the type where the device translates the amplitude of each pulse into a time duration electrical quantity which is utilized to control the length of a train of pulses forwarded to a scaler is described. The final state of the scaler for any one train of pulses selects the appropriate channel in a magnetic memory in which an additional count of one is placed. The improvement consists of a storage feature for storing a signal pulse so that in many instances when two signal pulses occur in rapid succession, the second pulse is preserved and processed at a later time.

  18. DOE Taking Wind Forecasting to New Heights | Department of Energy

    Energy Saver

    Taking Wind Forecasting to New Heights DOE Taking Wind Forecasting to New Heights May 18, 2015 - 3:24pm Addthis A 2013 study conducted for the U.S. Department of Energy (DOE) by ...

  19. Property:Maximum Wave Height(m) | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Jump to: navigation, search Property Name Maximum Wave Height(m) Property Type String Pages using the property "Maximum Wave Height(m)" Showing 25 pages using this property....

  20. A new technique to measure tunneling barrier height in solid...

    Office of Scientific and Technical Information (OSTI)

    A new technique to measure tunneling barrier height in solid media Citation Details In-Document Search Title: A new technique to measure tunneling barrier height in solid media ...

  1. University Heights, Ohio: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    University Heights, Ohio: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 41.4978306, -81.5373456 Show Map Loading map... "minzoom":false,"mapp...

  2. NREL: Wind Research - New Wind Resource Maps Reach Higher Heights

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

    capacity map at a 140-meter hub height. Photo courtesy of WINDExchange August 11, 2015 The National Renewable Energy Laboratory and AWS Truepower LLC recently released maps...

  3. Alamo Heights, Texas: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Alamo Heights, Texas: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 29.4849531, -98.4658502 Show Map Loading map... "minzoom":false,"mappings...

  4. Barker Heights, North Carolina: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Barker Heights, North Carolina: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 35.3112279, -82.444008 Show Map Loading map......

  5. East Richmond Heights, California: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Richmond Heights, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 37.944924, -122.3135811 Show Map Loading map......

  6. Ben Avon Heights, Pennsylvania: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Avon Heights, Pennsylvania: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.5136795, -80.0731112 Show Map Loading map......

  7. Huber Heights, Ohio: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    by expanding it. Huber Heights is a city in Greene County and Miami County and Montgomery County, Ohio. It falls under Ohio's 8th congressional district.12 References ...

  8. Microscopic Description of Nuclear Fission: Fission Barrier Heights...

    Office of Scientific and Technical Information (OSTI)

    Conference: Microscopic Description of Nuclear Fission: Fission Barrier Heights of Even-Even Actinides Citation Details In-Document Search Title: Microscopic Description of Nuclear ...

  9. Drexel Heights, Arizona: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Drexel Heights, Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.1411888, -111.028427 Show Map Loading map... "minzoom":false,"mappi...

  10. ARM - PI Product - Raman lidar/AERI PBL Height Product

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

    ProductsRaman lidar/AERI PBL Height Product ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send PI Product : Raman lidar/AERI PBL Height Product Planetary Boundary Layer (PBL) heights have been computed using potential temperature profiles derived from Raman lidar and AERI measurements. Raman lidar measurements of the rotational Raman scattering from nitrogen and oxygen are used to derive vertical profiles of potential

  11. Maple Heights-Lake Desire, Washington: Energy Resources | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    help OpenEI by expanding it. Maple Heights-Lake Desire is a census-designated place in King County, Washington.1 References US Census Bureau 2005 Place to 2006 CBSA...

  12. Federal Heights, Colorado: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    article is a stub. You can help OpenEI by expanding it. Federal Heights is a city in Adams County, Colorado. It falls under Colorado's 2nd congressional district.12...

  13. Wind Industry Soars to New Heights | Department of Energy

    Energy Saver

    Wind Industry Soars to New Heights August 5, 2013 - 8:13am Addthis Watch the video to learn more about the new records reached by the U.S. industry as found in the 2012 Wind ...

  14. Property:Building/InteriorHeight | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    InteriorHeight" Showing 25 pages using this property. (previous 25) (next 25) S Sweden Building 05K0001 + 3.5 + Sweden Building 05K0002 + 3 + Sweden Building 05K0003 + 3 +...

  15. Windsor Heights, Iowa: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    article is a stub. You can help OpenEI by expanding it. Windsor Heights is a city in Polk County, Iowa. It falls under Iowa's 3rd congressional district.12 References US...

  16. Vadnais Heights, Minnesota: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    article is a stub. You can help OpenEI by expanding it. Vadnais Heights is a city in Ramsey County, Minnesota. It falls under Minnesota's 4th congressional district.12...

  17. San Antonio Heights, California: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Hide Map This article is a stub. You can help OpenEI by expanding it. San Antonio Heights is a census-designated place in San Bernardino County, California.1...

  18. Wind Turbine Inspection Technology Reaches New Heights | GE Global...

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

    Wind Turbine Inspection Technology Reaches New Heights Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new ...

  19. Perry Heights, Ohio: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Hide Map This article is a stub. You can help OpenEI by expanding it. Perry Heights is a census-designated place in Stark County, Ohio.1 References US...

  20. Richmond Heights, Florida: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Hide Map This article is a stub. You can help OpenEI by expanding it. Richmond Heights is a census-designated place in Miami-Dade County, Florida.1 References ...

  1. Codes for Unfolding Activation Detector Data and Pulse Height Spectra.

    Energy Science and Technology Software Center

    1980-01-30

    Version 00 ITER-2 includes two versions of the ITER code; these are ITERAD and ITERMS. ITER-2 was previously used for unfolding data from neutron activation detectors; it is now capable, also, of unfolding pulse height spectra.

  2. Porter Heights, Texas: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    You can help OpenEI by expanding it. Porter Heights is a census-designated place in Montgomery County, Texas.1 References US Census Bureau 2005 Place to 2006 CBSA Retrieved...

  3. Control of bed height in a fluidized bed gasification system

    DOEpatents

    Mehta, Gautam I.; Rogers, Lynn M.

    1983-12-20

    In a fluidized bed apparatus a method for controlling the height of the fdized bed, taking into account variations in the density of the bed. The method comprises taking simultaneous differential pressure measurements at different vertical elevations within the vessel, averaging the differential pressures, determining an average fluidized bed density, then periodically calculating a weighting factor. The weighting factor is used in the determination of the actual bed height which is used in controlling the fluidizing means.

  4. 'Data Deluge' Pushes Mass Spec Imaging to New Heights

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

    'Data Deluge' Pushes Mass Spec Imaging to New Heights 'Data Deluge' Pushes Mass Spec Imaging to New Heights MANTISSA Team Takes Novel Approach to Improve Experimental Data Analysis July 15, 2015 Contact: Kathy Kincade, +1 510 495 2124, kkincade@lbl.gov MANTISSA Ion-intensity visualization of the 20 most important ions in a mouse brain segment selected by the CX/CUR algorithm. Of the 20 ions, little redundancy is present, pointing to the effectiveness of the CX approach for information

  5. ARM - Publications: Science Team Meeting Documents: The height distribution

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

    of tropical convective clouds The height distribution of tropical convective clouds May, Peter Bureau or Meteorology Research Centre The maximum height that towering convection reaches in the tropics has been studied using operational radar data from Northern Australia as well as cloud radar (MMCR) and polarimetric radar operating in a vertical cloud mode. This analysis was partly driven by the suggestion of Johnson et al (1999) and May and Rajopadhyaya (1999) that there were two distinct

  6. ARM: X-SAPR Range Height Indicator scan (Dataset) | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Data Explorer Search Results ARM: X-SAPR Range Height Indicator scan Title: ARM: X-SAPR Range Height Indicator scan X-SAPR Range Height Indicator scan Authors: Widener, Kevin ; ...

  7. Building Height-Characteristics in Three U.S. Cities

    SciTech Connect

    Burian, S. J.; Brown, M. J.; Velugubantla, S. P.

    2002-01-01

    Urban canopy parameterizations have been used to represent urban effects in numerical models of mesoscale meteorology, the surface energy budget, and pollutant dispersion. The urban canopy parameterization accounts for the drag exerted by urban roughness elements, the enhancement of turbulent kinetic energy, and the alteration of the surface energy budget (Brown 2000). Accurate representation of urban effects in numerical simulations requires the determination of urban morphological parameters, including building height statistics. Computer analysis of 3-D building digital datasets can provide details of the urban environment in an efficient manner. Ratti ut al. (2001) describe a method for obtaining urban canopy parameters from digital imagery using image processing techniques, Burian et al. (2002) present an alternative analysis approach using a geographic information system (GIS). In this paper, building height statistics computed for three U.S. cities following the GIS approach are presented.

  8. Limiting Factors for Convective Cloud Top Height in the Tropics

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

    Limiting Factors for Convective Cloud Top Height in the Tropics M. P. Jensen and A. D. Del Genio National Aeronautics and Space Administration Goddard Institute for Space Studies Columbia University New York, New York Introduction Populations of tropical convective clouds are mainly comprised of three types: shallow trade cumulus, mid-level cumulus congestus and deep convective clouds (Johnson et al. 1999). Each of these cloud types has different impacts on the local radiation and water budgets.

  9. Process for preparing schottky diode contacts with predetermined barrier heights

    DOEpatents

    Chang, Y. Austin; Jan, Chia-Hong; Chen, Chia-Ping

    1996-01-01

    A process is provided for producing a Schottky diode having a preselected barrier height .phi..sub.Bn. The substrate is preferably n-GaAs, the metallic contact is derived from a starting alloy of the Formula [.SIGMA.M.sub..delta. ](Al.sub.x Ga.sub.1-x) wherein: .SIGMA.M is a moiety which consists of at least one M, and when more than one M is present, each M is different, M is a Group VIII metal selected from the group consisting of nickel, cobalt, ruthenium, rhodium, indium and platinum, .delta. is a stoichiometric coefficient whose total value in any given .SIGMA.M moiety is 1, and x is a positive number between 0 and 1 (that is, x ranges from greater than 0 to less than 1). Also, the starting alloy is capable of forming with the substrate a two phase equilibrium reciprocal system of the binary alloy mixture [.SIGMA.M.sub..delta. ]Ga-[.SIGMA.M.sub..delta. ]Al-AlAs-GaAs. When members of an alloy subclass within this Formula are each preliminarily correlated with the barrier height .phi..sub.Bn of a contact producable therewith, then Schottky diodes of predetermined barrier heights are producable by sputtering and annealing. Further provided are the product Schottky diodes that are produced according to this process.

  10. Plant community composition and vegetation height, Barrow, Alaska, Ver. 1

    DOE Data Explorer

    Sloan, Victoria; Norby, Richard; Siegrist, Julia; Iversen, Colleen; Brooks, Jonathan; Liebig, Jennifer; Wood, Sarah

    2014-04-25

    This dataset contains i) the results of field surveys of plant community composition and vegetation height made between 17th and 29th July 2012 in 48, 1 x 1 m plots located in areas A-D of Intensive Site 1 at the Next-Generation Ecosystem Experiments (NGEE) Arctic site near Barrow, Alaska and ii) results of a mapping exercise undertaken in August 2013 using two perpendicular transects across each polygon containing vegetation plots to determine the boundaries of vegetation communities described in 2012.

  11. Plant community composition and vegetation height, Barrow, Alaska, Ver. 1

    DOE Data Explorer

    Sloan, Victoria; Norby, Richard; Siegrist, Julia; Iversen, Colleen; Brooks, Jonathan; Liebig, Jennifer; Wood, Sarah

    This dataset contains i) the results of field surveys of plant community composition and vegetation height made between 17th and 29th July 2012 in 48, 1 x 1 m plots located in areas A-D of Intensive Site 1 at the Next-Generation Ecosystem Experiments (NGEE) Arctic site near Barrow, Alaska and ii) results of a mapping exercise undertaken in August 2013 using two perpendicular transects across each polygon containing vegetation plots to determine the boundaries of vegetation communities described in 2012.

  12. EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line...

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

    5: Vantage to Pomona Heights 230 kV Transmission Line Project; Yakima, Grant, Benton, and Kittitas Counties, Washington EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line ...

  13. Property:Maximum Wave Height(m) at Wave Period(s) | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    at Wave Period(s) Jump to: navigation, search Property Name Maximum Wave Height(m) at Wave Period(s) Property Type String Pages using the property "Maximum Wave Height(m) at Wave...

  14. 23 V.S.A. Section 1431 Height and Width Limits | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: 23 V.S.A. Section 1431 Height and Width LimitsLegal Abstract Limits for the height and width...

  15. Dilution calculations for determining laboratory exhaust stack heights

    SciTech Connect

    Ratcliff, M.A.; Sandru, E.

    1999-07-01

    Laboratory exhaust stacks should be designed with sufficient height and exit momentum to avoid re-entry of exhaust and possible air quality problems, and the design should be evaluated before construction. One evaluation method is presented in this paper that combines dilution prediction equations from the 1997 ASHRAE Handbook--Fundamentals (1997) and a dilution criteria of Halitsky (1988). This method is less conservative than a geometric method in the ASHRAE Handbook and is less costly than wind-tunnel modeling. The method should only be applied to relatively simple building geometries with no larger buildings adjacent to them. A planned change to the ASHRAE equations, which would result in larger stacks being necessary, is discussed. Further investigation of this change is recommended using comparisons to wind tunnel data.

  16. The physics and chemistry of the Schottky barrier height

    SciTech Connect

    Tung, Raymond T.

    2014-03-15

    The formation of the Schottky barrier height (SBH) is a complex problem because of the dependence of the SBH on the atomic structure of the metal-semiconductor (MS) interface. Existing models of the SBH are too simple to realistically treat the chemistry exhibited at MS interfaces. This article points out, through examination of available experimental and theoretical results, that a comprehensive, quantum-mechanics-based picture of SBH formation can already be constructed, although no simple equations can emerge, which are applicable for all MS interfaces. Important concepts and principles in physics and chemistry that govern the formation of the SBH are described in detail, from which the experimental and theoretical results for individual MS interfaces can be understood. Strategies used and results obtained from recent investigations to systematically modify the SBH are also examined from the perspective of the physical and chemical principles of the MS interface.

  17. Indium Growth and Island Height Control on Si Submonolayer Phases

    SciTech Connect

    Chen, Jizhou

    2009-05-09

    wave length of 13.4nm so it can curve on the surface of an sample to make structure as small as the order of 10nm. however, lithograph usually causes permanent damages to the surface and in many cases the QDs are damaged during the lithograph and therefore result in high percentage of defects. Quantum size effect has attracted more and more interests in surface science due to many of its effects. One of its effects is the height preference in film growing and the resulting possibility of uniformly sized self-assemble nanostructure. The experiment of Pb islands on In 4x1 phase shows that both the height and the width can be controlled by proper growth conditions, which expands the growth dimensions from 1 to 2. This discover leads us to study the In/Pb interface. In Ch.3, we found that the Pb islands growing on In 4x1-Si(111) surface which have uniform height due to QSE and uniform width due to the constriction of In 4x1 lattice have unexpected stability. These islands are stable in even RT, unlike usual nanostructures on Pb/Si surface which are stable only at low temperature. Since similar structures are usually grown at low temperature, this discovery makes the grown structures closer to technological applications. It also shows the unusual of In/Pb interface. Then we studied the In islands grown on Pb-{alpha}-{radical}3x{radical}3-Si(111) phase in Ch.4. These islands have fcc structure in the first few layers, and then convert to bct structure. The In fcc islands have sharp height preference due to QSE like Pb islands. However, the preferred height is different (7 layer for Pb on Si 7x7 and 4 layer for Pb on In 4x1), due to the difference of interface. The In islands structure prefers to be bct than fcc with coverage increase. It is quantitatively supported by first-principle calculation. Unexpectedly, the In islands grown on various of In interfaces didn't show QSE effects and phase transition from fcc and bct structures as on the Pb-{alpha} interface (Ch.6). In g

  18. ARM: Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet max range

    Office of Scientific and Technical Information (OSTI)

    (Dataset) | Data Explorer Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet max range Title: ARM: Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet max range Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet max range Authors: Morris, Victor Publication Date: 1996-10-11 OSTI Identifier: 1025313 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National

  19. ARM: Multi-Filter Radiometer (MFR): upwelling irradiance at 3-meter height

    Office of Scientific and Technical Information (OSTI)

    (Dataset) | Data Explorer Multi-Filter Radiometer (MFR): upwelling irradiance at 3-meter height Title: ARM: Multi-Filter Radiometer (MFR): upwelling irradiance at 3-meter height Multi-Filter Radiometer (MFR): upwelling irradiance at 3-meter height Authors: Gary Hodges Publication Date: 2013-09-18 OSTI Identifier: 1140239 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National

  20. ARM: X-SAPR Range Height Indicator scan (Dataset) | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    SAPR Range Height Indicator scan Title: ARM: X-SAPR Range Height Indicator scan X-SAPR Range Height Indicator scan Authors: Widener, Kevin ; Nelson, Dan ; Bharadwaj, Nitin ; Lindenmaier, Iosif [1] ; Collis, Scott + Show Author Affiliations Andrei Publication Date: 2014-01-22 OSTI Identifier: 1150305 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National Laboratory (ORNL), Oak Ridge,

  1. File:NREL-ca-90m-offshore.pdf | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Jump to: navigation, search File File history File usage California - 90 Meter Offshore Wind Speed Size of this preview: 463 599 pixels. Other resolution: 464 600...

  2. Systems and methods that generate height map models for efficient three dimensional reconstruction from depth information

    DOEpatents

    Frahm, Jan-Michael; Pollefeys, Marc Andre Leon; Gallup, David Robert

    2015-12-08

    Methods of generating a three dimensional representation of an object in a reference plane from a depth map including distances from a reference point to pixels in an image of the object taken from a reference point. Weights are assigned to respective voxels in a three dimensional grid along rays extending from the reference point through the pixels in the image based on the distances in the depth map from the reference point to the respective pixels, and a height map including an array of height values in the reference plane is formed based on the assigned weights. An n-layer height map may be constructed by generating a probabilistic occupancy grid for the voxels and forming an n-dimensional height map comprising an array of layer height values in the reference plane based on the probabilistic occupancy grid.

  3. ARM: X-SAPR Horizon-to-horizon Range-Height Indicator scan (Dataset) | Data

    Office of Scientific and Technical Information (OSTI)

    Explorer Horizon-to-horizon Range-Height Indicator scan Title: ARM: X-SAPR Horizon-to-horizon Range-Height Indicator scan X-SAPR Horizon-to-horizon Range-Height Indicator scan Authors: Bharadwaj, Nitin ; Widener, Kevin ; Collis, Scott Publication Date: 2010-12-17 OSTI Identifier: 1025326 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (US)

  4. On the influence of shrub height and expansion on boreal climate...

    Office of Scientific and Technical Information (OSTI)

    Title: On the influence of shrub height and expansion on boreal climate Authors: Bonfils, C ; Phillips, T ; Lawrence, D ; Cameron-Smith, P ; Riley, W ; Subin, Z Publication Date: ...

  5. EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line...

    Energy Saver

    BPA's proposed action is to interconnect the proposed transmission line to an existing BPA substation. EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line Project Public ...

  6. Comparison of Cloud Top Height and Optical Depth Histograms from ISCCP,

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

    MISR, and MODIS Comparison of Cloud Top Height and Optical Depth Histograms from ISCCP, MISR, and MODIS Marchand, Roger Pacific Northwest National Laboratory Ackerman, Thomas Pacific Northwest National Laboratory Category: Cloud Properties Joint histograms of Cloud Top Height (CTH) and Optical Depth (OD) derived by the International Satellite Cloud Climatology Project (ISCCP) are being widely used by the climate modeling community in evaluating global climate models. Similar joint histograms

  7. Determination of Cloud Base Height, Wind Velocity, and Short-Range Cloud

    Office of Scientific and Technical Information (OSTI)

    Structure Using Multiple Sky Imagers Field Campaign Report (Technical Report) | SciTech Connect Determination of Cloud Base Height, Wind Velocity, and Short-Range Cloud Structure Using Multiple Sky Imagers Field Campaign Report Citation Details In-Document Search Title: Determination of Cloud Base Height, Wind Velocity, and Short-Range Cloud Structure Using Multiple Sky Imagers Field Campaign Report Clouds are a central focus of the U.S. Department of Energy (DOE)'s Atmospheric System

  8. ARM: ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

    DOE Data Explorer

    Karen Johnson; Michael Jensen

    1996-11-08

    ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

  9. ARM: ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

    DOE Data Explorer

    Karen Johnson; Michael Jensen

    ARSCL: cloud base height from first Clothiaux algorithms on Vaisala or Belfort ceilometers, Micropulse lidar, and MMCR

  10. Determination of the Schottky barrier height of ferromagnetic contacts to few-layer phosphorene

    SciTech Connect

    Anugrah, Yoska; Robbins, Matthew C.; Koester, Steven J.; Crowell, Paul A.

    2015-03-09

    Phosphorene, the 2D analogue of black phosphorus, is a promising material for studying spin transport due to its low spin-orbit coupling and its ½ nuclear spin, which could allow the study of hyperfine effects. In this work, the properties of permalloy (Py) and cobalt (Co) contacts to few-layer phosphorene are presented. The Schottky barrier height was extracted and determined as a function of gate bias. Flat-band barrier heights, relative to the valence band edge, of 110 meV and 200 meV were determined for Py and Co, respectively. These results are important for future studies of spin transport in phosphorene.

  11. Effect of habitat and foraging height on bat activity in the coastal plain of South Carolina.

    SciTech Connect

    Menzel, Jennifer, M.; Menzel, Michael A.; Kilgo, John C.; Ford, W. Mark; Edwards, John W.; McCracken, Gary F.

    2005-07-01

    A comparison of bat activity levels in the Coastal Plain of South Carolina among 5 habitat types: forested riparian areas, clearcuts, young pine plantations, mature pine plantations and pine savannas, using time expansion radio-microphones and integrated detectors to simultaneously monitor bat activity at three heights in each habitat type.

  12. Estimation of the mixing layer height over a high altitude site in Central Himalayan region by using Doppler lidar

    SciTech Connect

    Shukla, K. K.; Phanikumar, D. V.; Newsom, Rob K.; Kumar, Niranjan; Ratnam, Venkat; Naja, M.; Singh, Narendra

    2014-03-01

    A Doppler lidar was installed at Manora Peak, Nainital (29.4 N; 79.2 E, 1958 amsl) to estimate mixing layer height for the first time by using vertical velocity variance as basic measurement parameter for the period September-November 2011. Mixing layer height is found to be located ~0.57 +/- 0.1and 0.45 +/- 0.05km AGL during day and nighttime, respectively. The estimation of mixing layer height shows good correlation (R>0.8) between different instruments and with different methods. Our results show that wavelet co-variance transform is a robust method for mixing layer height estimation.

  13. Micrometeorological data for energy-budget studies near Rogers Spring, Ash Meadows National Wildlife Refuge, Nye County, Nevada, 1994

    SciTech Connect

    Nichols, W.D.; Rapp, T.R.

    1996-05-01

    The data were collected at two sites near Rogers Spring for use in energy-budget studies beginning in 1994. The data collected at each site included net radiation, air temperature at two heights, dew- point temperature at two heights, windspeed at two heights, soil heat flux, and soil temperature in the interval between the land surface and the buried heat-flux plates.

  14. Height control of self-assembled quantum dots by strain engineering during capping

    SciTech Connect

    Grossi, D. F. Koenraad, P. M.; Smereka, P.; Keizer, J. G.; Ulloa, J. M.

    2014-10-06

    Strain engineering during the capping of III-V quantum dots has been explored as a means to control the height of strained self-assembled quantum dots. Results of Kinetic Monte Carlo simulations are confronted with cross-sectional Scanning Tunnel Microscopy (STM) measurements performed on InAs quantum dots grown by molecular beam epitaxy. We studied InAs quantum dots that are capped by In{sub x}Ga{sub (1−x)}As layers of different indium compositions. Both from our realistic 3D kinetic Monte Carlo simulations and the X-STM measurements on real samples, a trend in the height of the capped quantum dot is found as a function of the lattice mismatch between the quantum dot material and the capping layer. Results obtained on additional material combinations show a generic role of the elastic energy in the control of the quantum dot morphology by strain engineering during capping.

  15. Chamberlain Heights Redevelopment: A Large Scale, Cold Climate Study of Affordable Housing Retrofits

    SciTech Connect

    Donnelly, K.; Mahle, M.

    2012-03-01

    The City of Meriden Housing Authority (MHA) collaborated with affordable housing developer Jonathon Rose Companies (JRC) to complete a gut renovation of 124 residential units in the Chamberlain Heights retrofit project. The affordable housing community is made up of 36 buildings in duplex and quad configurations located on 22 acres within two miles of downtown Meriden, CT. The final post-retrofit analysis showed 40%-45% source energy savings over the existing pre-retrofit conditions.

  16. Chamberlain Heights Redevelopment: A Large Scale, Cold Climate Study of Affordable Housing Retrofits

    SciTech Connect

    Donnelly, K.; Mahle, M.

    2012-03-01

    The City of Meriden Housing Authority (MHA) collaborated with affordable housing developer Jonathon Rose Companies (JRC) to complete a gut renovation of 124 residential units in the Chamberlain Heights retrofit project. The affordable housing community is made up of 36 buildings in duplex and quad configurations located on 22 acres within two miles of downtown Meriden, CT. The final post-retrofit analysis showed 40-45% source energy savings over the existing pre-retrofit conditions.

  17. Artificial barriers to control excessive frac height growth [open quotes]Bracketfrac[close quotes

    SciTech Connect

    Arbaugh, R. ); Greener, M. )

    1994-08-01

    The Garfield and Beaver Creek fields produce from several dolomite layers in the Devonian Richland formation at depths of 4200-4600 ft. The Richfield is a series of relatively thin, 4-20 ft dolomite reservoirs, which are confined above and below by anhydrites. These anhydrites are comparable to the dolomite reservoirs in fracture resistance and essentially do not present an effective stress barrier to fracture growth. The dolomite zones have a porosity range of 12-20%, and permeability ranges from 6-20 md. The dolomite reservoirs also contain significant amounts of free salt, which is apparent in the large quantities of produced salt in new wells. There are eight producing zones, oil gravity is 43[degrees] APi, and viscosity is 1 cp at the reservoir with a temperature of 110[degrees]F. Previous completions in the Richfield have been plagued by unrestricted fractured height growth because there is no control over where the frac is going. Standard practice has been to perforate and treat the zones in groups. If all zones are opened at the same time, communication usually occurs (up or down) during the fracturing of any group of zones. Artificial barriers to control excessive frac height growth were used in the Richfield formation for the stated reasons. Because no barrier was present between producing zones, the production capabilities of each zone and each new and existing well in the field were limited. INVERTAFRAC and DIVERTAFRAC services are techniques developed and used exclusively by Dowell Oilfield Service Company to control vertical fracture height. When both services are simultaneously used, the treatment is called BRACKETFRAC. By limiting fracture height to the pay zone, several important results are achieved: diversion from barren zones, water, or other undesirable fluids; improved fracture efficiency; deeper penetrating fractures; improved proppant distribution; and consistently better stimulation results.

  18. Advanced Ultrasonic Device with In-Situ Height Adjustment for Improved Flaw

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

    Detection - Energy Innovation Portal Find More Like This Return to Search Advanced Ultrasonic Device with In-Situ Height Adjustment for Improved Flaw Detection Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Market Sheet (595 KB) Technology Marketing Summary Ultrasonic testing is a nondestructive inspection (NDI) technique that utilizes ultra-high frequency sound to detect flaws within a part of interest. A fluid (e.g. water or gel) is

  19. Estimating Three-Dimensional Cloudy Radiative Transfer Effects from Time-Height Cross Sections

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

    Estimating Three-Dimensional Cloudy Radiative Transfer Effects from Time-Height Cross Sections C. Hannay and R. Pincus National Oceanic and Atmospheric Administration Climate Diagnostics Center Boulder, Colorado K. F. Evans Program in Atmospheric and Oceanic Sciences University of Colorado Boulder, Colorado Introduction Clouds in the atmosphere are finite in extent and variable in every direction and in time. Long data sets from ground-based profilers, such as lidars or cloud radars, could

  20. Very low Schottky barrier height at carbon nanotube and silicon carbide interface

    SciTech Connect

    Inaba, Masafumi Suzuki, Kazuma; Shibuya, Megumi; Lee, Chih-Yu; Masuda, Yoshiho; Tomatsu, Naoya; Norimatsu, Wataru; Kusunoki, Michiko; Hiraiwa, Atsushi; Kawarada, Hiroshi

    2015-03-23

    Electrical contacts to silicon carbide with low contact resistivity and high current durability are crucial for future SiC power devices, especially miniaturized vertical-type devices. A carbon nanotube (CNT) forest formed by silicon carbide (SiC) decomposition is a densely packed forest, and is ideal for use as a heat-dissipative ohmic contact in SiC power transistors. The contact resistivity and Schottky barrier height in a Ti/CNT/SiC system with various SiC dopant concentrations were evaluated in this study. Contact resistivity was evaluated in relation to contact area. The Schottky barrier height was calculated from the contact resistivity. As a result, the Ti/CNT/SiC contact resistivity at a dopant concentration of 3??10{sup 18?}cm{sup ?3} was estimated to be ?1.3??10{sup ?4} ??cm{sup 2} and the Schottky barrier height of the CNT/SiC contact was in the range of 0.400.45?eV. The resistivity is relatively low for SiC contacts, showing that CNTs have the potential to be a good ohmic contact material for SiC power electronic devices.

  1. HIA 2015 DOE Zero Energy Ready Home Case Study: Amaris Homes, Fishers Circle, Vadnais Heights, MN

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

    Homes Fishers Circle Vadnais Heights, MN DOE ZERO ENERGY READY HOME(tm) The U.S. Department of Energy invites home builders across the country to meet the extraordinary levels of excellence and quality specified in DOE's Zero Energy Ready Home program (formerly known as Challenge Home). Every DOE Zero Energy Ready Home starts with ENERGY STAR Certified Homes Version 3.0 for an energy-efficient home built on a solid foundation of building science research. Advanced technologies are designed in to

  2. Genetic analysis of inflorescence and plant height components in sorghum (Panicoidae) and comparative genetics with rice (Oryzoidae)

    DOE PAGES [OSTI]

    Zhang, Dong; Kong, Wenqian; Robertson, Jon; Goff, Valorie H.; Epps, Ethan; Kerr, Alexandra; Mills, Gabriel; Cromwell, Jay; Lugin, Yelena; Phillips, Christine; et al

    2015-04-19

    Domestication has played an important role in shaping characteristics of the inflorescence and plant height in cultivated cereals. Taking advantage of meta-analysis of QTLs, phylogenetic analyses in 502 diverse sorghum accessions, GWAS in a sorghum association panel (n = 354) and comparative data, we provide insight into the genetic basis of the domestication traits in sorghum and rice. We performed genome-wide association studies (GWAS) on 6 traits related to inflorescence morphology and 6 traits related to plant height in sorghum, comparing the genomic regions implicated in these traits by GWAS and QTL mapping, respectively. In a search for signatures ofmoreselection, we identify genomic regions that may contribute to sorghum domestication regarding plant height, flowering time and pericarp color. Comparative studies across taxa show functionally conserved hotspots in sorghum and rice for awn presence and pericarp color that do not appear to reflect corresponding single genes but may indicate co-regulated clusters of genes. We also reveal homoeologous regions retaining similar functions for plant height and flowering time since genome duplication an estimated 70 million years ago or more in a common ancestor of cereals. In most such homoeologous QTL pairs, only one QTL interval exhibits strong selection signals in modern sorghum. Intersections among QTL, GWAS and comparative data advance knowledge of genetic determinants of inflorescence and plant height components in sorghum, and add new dimensions to comparisons between sorghum and rice.less

  3. Genetic analysis of inflorescence and plant height components in sorghum (Panicoidae) and comparative genetics with rice (Oryzoidae)

    SciTech Connect

    Zhang, Dong; Kong, Wenqian; Robertson, Jon; Goff, Valorie H; Epps, Ethan; Kerr, Alexandra; Mills, Gabriel; Cromwell, Jay; Lugin, Yelena; Phillips, Christine; Paterson, Andrew H

    2015-12-01

    Domestication has played an important role in shaping characteristics of the inflorescence and plant height in cultivated cereals. Taking advantage of meta-analysis of QTLs, phylogenetic analyses in 502 diverse sorghum accessions, GWAS in a sorghum association panel (n = 354) and comparative data, we provide insight into the genetic basis of the domestication traits in sorghum and rice. We performed genome-wide association studies (GWAS) on 6 traits related to inflorescence morphology and 6 traits related to plant height in sorghum, comparing the genomic regions implicated in these traits by GWAS and QTL mapping, respectively. In a search for signatures of selection, we identify genomic regions that may contribute to sorghum domestication regarding plant height, flowering time and pericarp color. Comparative studies across taxa show functionally conserved ‘hotspots’ in sorghum and rice for awn presence and pericarp color that do not appear to reflect corresponding single genes but may indicate co-regulated clusters of genes. We also reveal homoeologous regions retaining similar functions for plant height and flowering time since genome duplication an estimated 70 million years ago or more in a common ancestor of cereals. In most such homoeologous QTL pairs, only one QTL interval exhibits strong selection signals in modern sorghum. Intersections among QTL, GWAS and comparative data advance knowledge of genetic determinants of inflorescence and plant height components in sorghum, and add new dimensions to comparisons between sorghum and rice.

  4. Genetic analysis of inflorescence and plant height components in sorghum (Panicoidae) and comparative genetics with rice (Oryzoidae)

    DOE PAGES [OSTI]

    Zhang, Dong; Kong, Wenqian; Robertson, Jon; Goff, Valorie H; Epps, Ethan; Kerr, Alexandra; Mills, Gabriel; Cromwell, Jay; Lugin, Yelena; Phillips, Christine; et al

    2015-12-01

    Domestication has played an important role in shaping characteristics of the inflorescence and plant height in cultivated cereals. Taking advantage of meta-analysis of QTLs, phylogenetic analyses in 502 diverse sorghum accessions, GWAS in a sorghum association panel (n = 354) and comparative data, we provide insight into the genetic basis of the domestication traits in sorghum and rice. We performed genome-wide association studies (GWAS) on 6 traits related to inflorescence morphology and 6 traits related to plant height in sorghum, comparing the genomic regions implicated in these traits by GWAS and QTL mapping, respectively. In a search for signatures ofmore » selection, we identify genomic regions that may contribute to sorghum domestication regarding plant height, flowering time and pericarp color. Comparative studies across taxa show functionally conserved ‘hotspots’ in sorghum and rice for awn presence and pericarp color that do not appear to reflect corresponding single genes but may indicate co-regulated clusters of genes. We also reveal homoeologous regions retaining similar functions for plant height and flowering time since genome duplication an estimated 70 million years ago or more in a common ancestor of cereals. In most such homoeologous QTL pairs, only one QTL interval exhibits strong selection signals in modern sorghum. Intersections among QTL, GWAS and comparative data advance knowledge of genetic determinants of inflorescence and plant height components in sorghum, and add new dimensions to comparisons between sorghum and rice.« less

  5. The commanding heights of oil: Control over the International oil market

    SciTech Connect

    Krapels, E.N.

    1992-01-01

    The Commanding Heights of Oil is an analysis of oil's role in the international environment. It identifies the degree of control over oil in terms of what is asserted as the most important processes and factors that determine the condition of international affairs: (1) The state of oil demand in relation to the capacity to supply, with special emphasis on the amount of spare production capacity; (2) The nature of the business, and how the structure of the industry changes over time as companies cope with the risks peculiar to an extremely capital intensive enterprise; (3) The financial strength of the parties contending for control, including their ability to outlast their opponents in contests for influence over oil affairs; and (4) The nature of the mechanisms whereby the governments and companies strive to create a situation in which they do not have to rely on price to balance supply and demand. Each of the four central factors was prominent at every major turn of the international oil market over the decades. The dissertation argues that the international oil market was controlled in the past by first a group of companies, and, later, a group of countries, for a combination of reasons that is unlikely to be repeated. That does not mean that the 1990s will be spared oil price shocks such as occurred in the 1970s and 1980s. It does suggest that those shocks are unlikely to last long, that OPEC members are unlikely to be able to leverage their position in oil into larger positions in world affairs. It means that oil is unlikely to play as prominent a role in world affairs in the 1990s as it has in the past, even if oil demand, and along with it dependence on OPEC oil, rises.

  6. Experimental study of the influence of collector height on the steady state performance of a passive solar air heater

    SciTech Connect

    Ryan, D.; Burek, S.A.M.

    2010-09-15

    Passive solar air heaters, such as solar chimneys and Trombe Walls, rely on solar-induced buoyancy-driven (natural) convection to produce the flow of air. Although buoyancy-driven convection is well understood for a single vertical plate, buoyancy-driven convection in an asymmetrically-heated channel is more problematic, and in particular, the effects of the channel height on the flow rate and heat transfer. This paper reports on experiments on test rigs resembling lightweight passive solar air-heating collectors. The test rigs were of heights 0.5, 1.0 and 2.0 m, with adjustable channel depths (20-150 mm) and heat inputs (up to 1000 W/m{sup 2}). Measurements were made of the air, plate and cover temperatures, and air velocities. Results are presented as dimensionless correlations of mass flow (as Reynolds number) and efficiency against heat input (as Rayleigh number), channel depth and height. Thermal efficiency is shown to be a function of the heat input and the system height, but not of the channel depth; mass flow is shown to be a dependent on all three parameters. (author)

  7. Annealing dependence of diamond-metal Schottky barrier heights probed by hard x-ray photoelectron spectroscopy

    SciTech Connect

    Gaowei, M.; Muller, E. M.; Rumaiz, A. K.; Weiland, C.; Cockayne, E.; Woicik, J. C.; Jordan-Sweet, J.; Smedley, J.

    2012-05-14

    Hard x-ray photoelectron spectroscopy was applied to investigate the diamond-metal Schottky barrier heights for several metals and diamond surface terminations. The position of the diamond valence-band maximum was determined by theoretically calculating the diamond density of states and applying cross section corrections. The diamond-platinum Schottky barrier height was lowered by 0.2 eV after thermal annealing, indicating annealing may increase carrier injection in diamond devices leading to photoconductive gain. The platinum contacts on oxygen-terminated diamond was found to provide a higher Schottky barrier and therefore a better blocking contact than that of the silver contact in diamond-based electronic devices.

  8. Schottky barrier height reduction for holes by Fermi level depinning using metal/nickel oxide/silicon contacts

    SciTech Connect

    Islam, Raisul, E-mail: raisul@stanford.edu; Shine, Gautam; Saraswat, Krishna C. [Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States)

    2014-11-03

    We report the experimental demonstration of Fermi level depinning using nickel oxide (NiO) as the insulator material in metal-insulator-semiconductor (M-I-S) contacts. Using this contact, we show less than 0.1?eV barrier height for holes in platinum/NiO/silicon (Pt/NiO/p-Si) contact. Overall, the pinning factor was improved from 0.08 (metal/Si) to 0.26 (metal/NiO/Si). The experimental results show good agreement with that obtained from theoretical calculation. NiO offers high conduction band offset and low valence band offset with Si. By reducing Schottky barrier height, this contact can be used as a carrier selective contact allowing hole transport but blocking electron transport, which is important for high efficiency in photonic applications such as photovoltaics and optical detectors.

  9. The Influence of Angiography Table Shields and Height on Patient and Angiographer Irradiation During Interventional Radiology Procedures

    SciTech Connect

    D'Othee, Bertrand Janne Lin, Pei-Jan Paul

    2007-06-15

    Purpose. To quantify the influence of angiography table height on patient and angiographer irradiation, as compared with other routine protective measures such as the use of protective shields hanging at the tableside and from the ceiling of angiography suites. Methods. An experimental study was carried out in which a phantom (substitute for a human body) placed on the angiography table was irradiated by pulsed fluoroscopy. Entrance exposure rates were measured at the phantom surface (surrogate of patient skin exposure by incident X-ray beam) and at 60 cm from the phantom (analog to angiographer skin exposure by scatter). Exposure rates were measured at levels corresponding to the knees, testes, waist, xyphoid appendix, shoulders, and eyes of an angiographer 178 cm tall. Measurements were repeated at angiography table heights of 85, 95, 105, and 110 cm from the floor, with and without protective shields. Results. Moving the table from its highest to lowest position increased by 32% the phantom entrance exposure but decreased scatter to the angiographer. Scatter to the angiographer could be reduced most by using the protective shields (30-105 times less), but low table heights provided relatively more important protection (412-1121 {mu}Sv/hr reduction, or 15-72% scatter reduction) when shields were not used (e.g., for unprotected regions of the angiographer's body such as the hands). Conclusion. Working at lower table heights provides a little additional protection to exposed body parts of angiographers, at the cost of somewhat higher patient exposure. Although small, this incremental protection could be clinically relevant in the long term. The choice of table position should be a compromise based on multiple factors, including at least patient exposure, scatter to angiographers, and angiographer comfort.

  10. Predicting wind shear effects: A study of Minnesota wind data collected at heights up to 70 meters

    SciTech Connect

    Artig, R.

    1997-12-31

    The Minnesota Department of Public Service (DPS) collects wind data at carefully selected sites around the state and analyzes the data to determine Minnesota`s wind power potential. DPS recently installed advanced new monitoring equipment at these sites and began to collect wind data at 30, 50, and 70 meters above ground level, with two anemometers at each level. Previously, the Department had not collected data at heights above ground level higher than 30 meters. DPS also, with the U.S. Department of Energy (DOE), installed four sophisticated monitoring sites as part of a Tall Tower Wind Shear Study that is assessing the effects of wind shear on wind power potential. At these sites, wind data are being collected at the 10, 30, 40, 50, 60, and 70 meter heights. This paper presents the preliminary results of the analysis of wind data from all sites. These preliminary results indicate that the traditional 1/7 power law does not effectively predict wind shear in Minnesota, and the result is an underestimation of Minnesota`s wind power potential at higher heights. Using a power factor of 1/5 or 1/4 may be more accurate and provide sound justification for installing wind turbines on taller towers in Minnesota.

  11. Adequacy of Power-to-Mass Scaling in Simulating PWR Incident Transient for Reduced-Height, Reduced-Pressure and Full-Height, Full-Pressure Integral System Test Facilities

    SciTech Connect

    Liu, T.-J.; Lee, C.-H

    2004-03-15

    A complete scheme of scaling methods to design the reduced-height, reduced-pressure (RHRP) Institute of Nuclear Energy Research Integral System Test (IIST) facility and to specify test conditions for incident simulation was developed. In order to preserve core decay power history and coolant mass inventory during a transient, a unique power-to-mass scaling method is proposed and utilized for RHRP and full-height, full-pressure (FHFP) systems. To validate the current scaling method, three counterpart tests done at the IIST facility are compared with the FHFP tests in small-break loss-of-coolant, station blackout, and loss-of-feedwater accidents performed at the Large-Scale Test Facility (LSTF) and the BETHSY test facility. Although differences appeared in design, scaling, and operation conditions among the IIST, LSTF, and BETHSY test facilities, the important physical phenomena shown in the facilities are almost the same. The physics involved in incident transient phenomena are well measured and modeled by showing the common thermal-hydraulic behavior of key parameters and the general consistency of chronological events. The results also confirm the adequacy of power-to-mass scaling methodology.

  12. Evaluation of WRF predicted near hub-height winds and ramp events over a Pacific Northwest site with complex terrain

    SciTech Connect

    Yang, Qing; Berg, Larry K.; Pekour, Mikhail S.; Fast, Jerome D.; Newsom, Rob K.; Stoelinga, Mark; Finley, Cathy

    2013-08-16

    The WRF model version 3.3 is used to simulate near hub-height winds and power ramps utilizing three commonly used planetary boundary-layer (PBL) schemes: Mellor-Yamada-Janji? (MYJ), University of Washington (UW), and Yonsei University (YSU). The predicted winds have small mean biases compared with observations. Power ramps and step changes (changes within an hour) consistently show that the UW scheme performed better in predicting up ramps under stable conditions with higher prediction accuracy and capture rates. Both YSU and UW scheme show good performance predicting up- and down- ramps under unstable conditions with YSU being slightly better for ramp durations longer than an hour. MYJ is the most successful simulating down-ramps under stable conditions. The high wind speed and large shear associated with low-level jets are frequently associated with power ramps, and the biases in predicted low-level jet explain some of the shown differences in ramp predictions among different PBL schemes. Low-level jets were observed as low as ~200 m in altitude over the Columbia Basin Wind Energy Study (CBWES) site, located in an area of complex terrain. The shear, low-level peak wind speeds, as well as the height of maximum wind speed are not well predicted. Model simulations with 3 PBL schemes show the largest variability among them under stable conditions.

  13. Final Report for Project: Impacts of stratification and non-equilibrium winds and waves on hub-height winds

    SciTech Connect

    Patton, Edward G.

    2015-07-14

    This project used a combination of turbulence-resolving large-eddy simulations, single-column modeling (where turbulence is parameterized), and currently available observations to improve, assess, and develop a parameterization of the impact of non-equilibrium wave states and stratification on the buoy-observed winds to establish reliable wind data at the turbine hub-height level. Analysis of turbulence-resolving simulations and observations illuminates the non-linear coupling between the atmosphere and the undulating sea surface. This analysis guides modification of existing boundary layer parameterizations to include wave influences for upward extrapolation of surface-based observations through the turbine layer. Our surface roughness modifications account for the interaction between stratification and the effects of swell’s amplitude and wavelength as well as swell’s relative motion with respect to the mean wind direction. The single-column version of the open source Weather and Research Forecasting (WRF) model (Skamarock et al., 2008) serves as our platform to test our proposed planetary boundary layer parameterization modifications that account for wave effects on marine atmospheric boundary layer flows. WRF has been widely adopted for wind resource analysis and forecasting. The single column version is particularly suitable to development, analysis, and testing of new boundary layer parameterizations. We utilize WRF’s single-column version to verify and validate our proposed modifications to the Mellor-Yamada-Nakanishi-Niino (MYNN) boundary layer parameterization (Nakanishi and Niino, 2004). We explore the implications of our modifications for two-way coupling between WRF and wave models (e.g.,Wavewatch III). The newly implemented parameterization accounting for marine atmospheric boundary layer-wave coupling is then tested in three-dimensional WRF simulations at grid sizes near 1 km. These simulations identify the behavior of simulated winds at the

  14. A Bayesian inversion framework for yield and height-of-burst/depth-of-burial for near-surface explosions

    SciTech Connect

    Johannesson, Gardar; Bulaevskaya, Vera; Ramirez, Abe; Ford, Sean; Rodgers, Artie

    2015-09-07

    A Bayesian inversion framework is presented to estimate the yield of an explosion and height-of-burst/depth-of-burial (HOB/DOB) using seismic and air pressure data. This is accomplished by first calibrating the parameters in the forward models that relate the observations to the yield and HOB/DOB and then using the calibrated model to estimate yield and HOB/DOB associated with a new set of seismic and air pressure observations. The MCMC algorithms required to perform these steps are outlined, and the results with real data are shown. Finally, an extension is proposed for a case when clustering in the seismic displacement occurs as a function of different types of rock and other factors.

  15. Low resistance Ti Ohmic contacts to 4H-SiC by reducing barrier heights without high temperature annealing

    SciTech Connect

    Huang Lingqin; Liu Bingbing; Zhu Qiaozhi; Chen Suhua; Gao Mingchao; Wang Dejun; Qin Fuwen

    2012-06-25

    Ti Ohmic contacts to relatively highly doped (1 Multiplication-Sign 10{sup 18} cm{sup -3}) n-type 4H-SiC have been produced, without high temperature annealing, by means of low temperature electronic cyclotron resonance microwave hydrogen plasma pre-treatment (HPT) of the SiC surface. The as-deposited Ti/4H-SiC contacts show Ohmic properties, and the specific contact resistance obtained is as low as 2.07 Multiplication-Sign 10{sup -4}{Omega}{center_dot}cm{sup 2} after annealing at low temperatures (400 Degree-Sign C). This is achieved by low barrier height at Ti/SiC interface, which could be attributed to decrease of surface states density by the HPT releasing Fermi level pinning, and to band-gap narrowing, image-force, and thermionic-field emission at high doping.

  16. The Independence Heights House

    Energy.gov [DOE] (indexed site)

    1.7 Percentage of Population Below the Poverty Level 41.6% Houston- Demographics ... 1.2 Percentage of Population Below the Poverty Level 23.8% CONTEXT CONTEXT DESIGN GOALS ...

  17. Barrier height of Pt-In{sub x}Ga{sub 1-x}N (0{<=}x{<=}0.5) nanowire Schottky diodes

    SciTech Connect

    Guo Wei; Banerjee, Animesh; Zhang Meng; Bhattacharya, Pallab

    2011-05-02

    The barrier height of Schottky diodes made on In{sub x}Ga{sub 1-x}N nanowires have been determined from capacitance-voltage measurements. The nanowires were grown undoped on n-type (001) silicon substrates by plasma-assisted molecular beam epitaxy. The length, diameter and density of the nanowires are {approx}1 {mu}m, 20 nm, and 1x10{sup 11} cm{sup -2}. The Schottky contact was made on the top surface of the nanowires with Pt after planarizing with parylene. The measured barrier height {Phi}{sub B} varies from 1.4 eV (GaN) to 0.44 eV (In{sub 0.5}Ga{sub 0.5}N) and agrees well with the ideal barrier heights in the Schottky limit.

  18. Indoor air pollution from portable kerosene-fired space heaters. [Effects of wick height and fuel consumption rate

    SciTech Connect

    Traynor, G.W.; Apte, M.G.; Dillworth, J.F.; Grimsrud, D.T.

    1983-02-01

    Indoor use of unvented combustion appliances is known to cause an increase in indoor air pollutant levels. Laboratory tests were conducted on radiant and convective portable kerosene-fired space heaters to identify the pollutants they emit and to determine their emission rates. Laboratory-derived CO and NO/sub 2/ emission rates from unvented portable kerosense-fired space heaters are summarized and the effect of wick height and fuel consumption rate on CO and NO/sub 2/ emissions is given. Pollutant concentration profiles resulting from the use of kerosene heaters in a 27m/sup 3/ environmental chamber and a 240m/sup 3/ house are presented. When such heaters are operated for one hour in a 27m/sup 3/ chamber with 0.4 air changes per hour, the resultant CO/sub 2/ concentrations are well above the U.S. occupational standard, and NO/sub 2/ concentrations are well above California's short-term outdoor standard. Further data on parameters such as heater usage patterns and air exchange rates are needed to determine the actual pollutant exposure that kerosene heater users experience.

  19. Effects of surface properties on barrier height and barrier inhomogeneities of platinum contacts to n-type 4H-SiC

    SciTech Connect

    Huang Lingqin; Li Shijuan; Wang Dejun [School of Electronic Science and Technology, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024 (China); Qin Fuwen [State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), Dalian University of Technology, Dalian 116024 (China)

    2013-07-15

    We investigated the Schottky barrier of Pt/4H-SiC contact as a function of 4H-SiC surface properties which effectively controlled by electronic cyclotron resonance hydrogen plasma pretreatment for different periods and annealing. It is found that the effective barrier height monotonically increases with decreasing the degree of Fermi level pinning. Electrically homogeneous contacts are observed when the Fermi level (FL) is 'pinned (Bardeen limit)' and 'free-pinned (Schottky limit).' However, a partial pinning of FL leads to Gaussian distribution of inhomogeneous barrier height. These results could be correlated with changes in the magnitude and spatial distribution of surface state density after different pretreatments.

  20. Radiation May Indirectly Impair Growth Resulting in Reduced Standing Height via Subclinical Inflammation in Atomic-Bomb Survivors Exposed at Young Ages

    DOE PAGES [OSTI]

    Nakashima, Eiji; Neriishi, Kazuo; Hsu, Wan-Ling

    2015-01-01

    For youngmore » atomic-bomb (A-bomb) survivors, A-bomb radiation’s (total) effect on standing height is thought to comprise the sum of direct effect and indirect effect via inflammation. With the data of five inflammatory markers—white blood cell count, sialic acid, corrected erythrocyte sedimentation rate (ESR), α 1 globulin, and α 2 globulin—obtained in adulthood during the period 1988 to 1992, a summary inflammatory index was constructed as a surrogate for the five subclinical inflammatory markers. For 3,327 A-bomb survivors exposed at ages of less than 25 years, a structural equation model was analyzed to measure direct radiation effects on adult height as well as mediating effect of radiation via inflammation on the height after adjustment for other risk factors, smoking, cancer, inflammatory disease, obesity, and diabetes mellitus. The mediation proportion of the radiation effect on height via inflammation was approximately 5% for both sexes for all ages, and indirect dose effects via inflammation were statistically significant for both sexes combined and for females exposed at ages 0 to 5 years. Indirect dose effects for all ages via sialic acid, corrected ESR, and α 2 globulin were marginally significant for both sexes combined and for females. These proportions are likely underestimated.« less

  1. Correlation between amplitude of spin accumulation signals investigated by Hanle effect measurement and effective junction barrier height in CoFe/MgO/n{sup +}-Si junctions

    SciTech Connect

    Saito, Y. Ishikawa, M.; Sugiyama, H.; Inokuchi, T.; Hamaya, K.; Tezuka, N.

    2015-05-07

    Correlation between the amplitude of the spin accumulation signals and the effective barrier height estimated from the slope of the log (RA) - t{sub MgO} plot (RA: resistance area product, t{sub MgO}: thickness of MgO tunnel barrier) in CoFe/MgO/n{sup +}-Si junctions was investigated. The amplitude of spin accumulation signals increases with increasing effective barrier heights. This increase of the amplitude of spin accumulation is originated from the increase of the spin polarization (P{sub Si}) in Si. The estimated absolute values of P{sub Si} using three-terminal Hanle signals are consistent with those estimated by four-terminal nonlocal-magnetoresistance (MR) and two-terminal local-MR. To demonstrate large spin accumulation in Si bulk band and enhance the local-MR through Si channel, these results indicate that the increase of the effective barrier height at ferromagnet/(tunnel barrier)/n{sup +}-Si junction electrode is important.

  2. EMISSION HEIGHT AND TEMPERATURE DISTRIBUTION OF WHITE-LIGHT EMISSION OBSERVED BY HINODE/SOT FROM THE 2012 JANUARY 27 X-CLASS SOLAR FLARE

    SciTech Connect

    Watanabe, Kyoko; Shimizu, Toshifumi [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan); Masuda, Satoshi [Solar-Terrestrial Environment Laboratory, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601 (Japan); Ichimoto, Kiyoshi [Kwasan and Hida Observatories, Kyoto University, Yamashina, Kyoto 607-8471 (Japan); Ohno, Masanori, E-mail: watanabe.kyoko@isas.jaxa.jp [Department of Physical Sciences, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8516 (Japan)

    2013-10-20

    White-light emissions were observed from an X1.7 class solar flare on 2012 January 27, using three continuum bands (red, green, and blue) of the Solar Optical Telescope on board the Hinode satellite. This event occurred near the solar limb, and so differences in the locations of the various emissions are consistent with differences in heights above the photosphere of the various emission sources. Under this interpretation, our observations are consistent with the white-light emissions occurring at the lowest levels of where the Ca II H emission occurs. Moreover, the centers of the source regions of the red, green, and blue wavelengths of the white-light emissions are significantly displaced from each other, suggesting that those respective emissions are emanating from progressively lower heights in the solar atmosphere. The temperature distribution was also calculated from the white-light data, and we found the lower-layer emission to have a higher temperature. This indicates that high-energy particles penetrated down to near the photosphere, and deposited heat into the ambient lower layers of the atmosphere.

  3. Schottky barrier height measurements of Cu/Si(001), Ag/Si(001), and Au/Si(001) interfaces utilizing ballistic electron emission microscopy and ballistic hole emission microscopy

    SciTech Connect

    Balsano, Robert; Matsubayashi, Akitomo; LaBella, Vincent P.

    2013-11-15

    The Schottky barrier heights of both n and p doped Cu/Si(001), Ag/Si(001), and Au/Si(001) diodes were measured using ballistic electron emission microscopy and ballistic hole emission microscopy (BHEM), respectively. Measurements using both forward and reverse ballistic electron emission microscopy (BEEM) and (BHEM) injection conditions were performed. The Schottky barrier heights were found by fitting to a linearization of the power law form of the Bell-Kaiser BEEM model. The sum of the n-type and p-type barrier heights are in good agreement with the band gap of silicon and independent of the metal utilized. The Schottky barrier heights are found to be below the region of best fit for the power law form of the BK model, demonstrating its region of validity.

  4. Excitonic fine-structure splitting in telecom-wavelength InAs/GaAs quantum dots: Statistical distribution and height-dependence

    SciTech Connect

    Goldmann, Elias Barthel, Stefan; Florian, Matthias; Jahnke, Frank; Schuh, Kolja

    2013-12-09

    The variation of the excitonic fine-structure splitting is studied for semiconductor quantum dots under the influence of a strain-reducing layer, utilized to shift the emission wavelength of the excitonic transition into the telecom-wavelength regime of 1.31.5 ?m. By means of a sp{sup 3}s{sup *}-tight-binding model and configuration interaction, we calculate wavelength shifts and fine-structure splittings for various quantum dot geometries. We find the splittings remaining small and even decreasing with strain-reducing layer composition for quantum dots with large height. Combined with an observed increased emission efficiency, the applicability for generation of entanglement photons is persistent.

  5. The signal introduced into a through transducer as a function of the height of the specimen and the diameter of a concentric hole in it

    SciTech Connect

    Dyakin, V.V.; Raevskii, V.Ya.; Sandovskii, V.A.

    1994-10-01

    A method is described for solving the problem of calculating the electromagnetic field excited by an a.c. winding around a nonmagnetic cylinder with or without a hole and of limited height. The result of the pertinent computer calculations were interpreted with the aid of holographs of the relative signal. It was found that the procedure can be used to calculate the signal of a through eddy-current transducer with various cylinder configurations. When a infinitely long cylinder in a through transducer is replaced by a cylinder with a length three times its radius the resulting error is less than 10%. It was also found that a direct transistion can be made from the theory of a superposed transducer to the theory of a through transducer.

  6. Correlations between In Situ Conductivity and Uniform-Height Epitaxial Morphology in Pb/Si(111)₋(7×7)

    DOE PAGES [OSTI]

    Jałochowski, M.; Zdyb, R.; Tringides, M. C.

    2016-02-23

    The growth of Pb on Si(111)-7x7 at temperatures from 72 K to 201 K has been investigated using in situ electrical resistivity measurements and Scanning Tunneling Microscopy (STM). For temperatures T>140 K the specific resistivity ρ(θ) vs coverage θ shows an unusual "hump", instead of the expected monotonic decrease with θ. This novel result correlates well with the formation of uniform height 8-layer Pb islands and the superdiffusive motion of the wetting layer, despite the low temperatures. A model of the film resistivity as two resistors in series, the amorphous wetting layer and the crystalline islands, explains quantitatively the resistivitymore » dependence on θ.« less

  7. ARM - Measurement - Cloud top height

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

    RUC : Rapid Update Cycle Model Data Field Campaign Instruments CO2LIDAR : Carbon Dioxide Doppler Lidar MPLCMASK : Cloud mask from Micropulse Lidar VARANAL : Constrained...

  8. Spatiotemporal Monte Carlo transport methods in x-ray semiconductor detectors: Application to pulse-height spectroscopy in a-Se

    SciTech Connect

    Fang Yuan; Badal, Andreu; Allec, Nicholas; Karim, Karim S.; Badano, Aldo

    2012-01-15

    Purpose: The authors describe a detailed Monte Carlo (MC) method for the coupled transport of ionizing particles and charge carriers in amorphous selenium (a-Se) semiconductor x-ray detectors, and model the effect of statistical variations on the detected signal. Methods: A detailed transport code was developed for modeling the signal formation process in semiconductor x-ray detectors. The charge transport routines include three-dimensional spatial and temporal models of electron-hole pair transport taking into account recombination and trapping. Many electron-hole pairs are created simultaneously in bursts from energy deposition events. Carrier transport processes include drift due to external field and Coulombic interactions, and diffusion due to Brownian motion. Results: Pulse-height spectra (PHS) have been simulated with different transport conditions for a range of monoenergetic incident x-ray energies and mammography radiation beam qualities. Two methods for calculating Swank factors from simulated PHS are shown, one using the entire PHS distribution, and the other using the photopeak. The latter ignores contributions from Compton scattering and K-fluorescence. Comparisons differ by approximately 2% between experimental measurements and simulations. Conclusions: The a-Se x-ray detector PHS responses simulated in this work include three-dimensional spatial and temporal transport of electron-hole pairs. These PHS were used to calculate the Swank factor and compare it with experimental measurements. The Swank factor was shown to be a function of x-ray energy and applied electric field. Trapping and recombination models are all shown to affect the Swank factor.

  9. Study of barrier height and trap centers of Au/n-Hg{sub 3}In{sub 2}Te{sub 6} Schottky contacts by current-voltage (I-V) characteristics and deep level transient spectroscopy

    SciTech Connect

    Li, Yapeng; Fu, Li Sun, Jie; Wang, Xiaozhen

    2015-02-28

    The temperature-dependent electrical characteristics of the Au/n-Hg{sub 3}In{sub 2}Te{sub 6} Schottky contact have been studied at the temperature range of 140 K–315 K. Based on the thermionic emission theory, the ideality factor and Schottky barrier height were calculated to decrease and increase from 3.18 to 1.88 and 0.39 eV to 0.5 eV, respectively, when the temperature rose from 140 K to 315 K. This behavior was interpreted by the lateral inhomogeneities of Schottky barrier height at the interface of Au/n-Hg{sub 3}In{sub 2}Te{sub 6} contact, which was shown by the plot of zero-bias barrier heights Φ{sub bo} versus q/2kT. Meanwhile, it was found that the Schottky barrier height with a Gaussian distribution was 0.67 eV and the standard deviation σ{sub 0} was about 0.092 eV, indicating that the uneven distribution of barrier height at the interface region. In addition, the mean value of Φ{sup ¯}{sub b0} and modified Richardson constant was determined to be 0.723 eV and 62.8 A/cm{sup 2}K{sup 2} from the slope and intercept of the ln(I{sub o}/T{sup 2}) – (qσ{sub 0}{sup 2}/2k{sup 2}T{sup 2}) versus q/kT plot, respectively. Finally, two electron trap centers were observed at the interface of Au/n-Hg{sub 3}In{sub 2}Te{sub 6} Schottky contact by means of deep level transient spectroscopy.

  10. RELAP5 / MOD3.2 analysis of INSC standard problem INSCSP - R7 : void fraction distribution over RBMK fuel channel height for experiments performed in the ENTEK BM test facility.

    SciTech Connect

    Garner, P. L.

    2002-08-22

    The RELAP5/MOD3.2 computer program has been used to analyze a series of tests investigating void fraction distribution over height in RBMK fuel channels performed in Facility BM at the ENTEK. This is RBMK Standard Problem 7 in Joint Project 6, which is the investigation of Computer Code Validation for Transient Analysis of RBMK and VVER Reactors, between the United States and Russian Minatom International Nuclear Safety Centers. The experiment facility and data, RELAP5 nodalization, and results are shown for all tests. Agreement between RELAP5 and the experiment data is reasonable.

  11. RELAP5/MOD3.2 analysis of INSC standard problem INSCSP - R7 : void fraction distribution over RBMK fuel channel height for experiments performed in the ENTEK BM test facility.

    SciTech Connect

    Garner, P. L.

    2002-05-24

    The RELAP5/MOD3.2 computer program has been used to analyze a series of tests investigating void fraction distribution over height in RBMK fuel channels performed in Facility BM at the ENTEK. This is RBMK Standard Problem 7 in Joint Project 6, which is the investigation of Computer Code Validation for Transient Analysis of RBMK and VVER Reactors, between the United States and Russian Minatom International Nuclear Safety Centers. The experiment facility and data, RELAP5 nodalization, and results are shown for all tests. Agreement between RELAP5 and the experiment data is reasonable.

  12. MULTI-CHANNEL ELECTRIC PULSE HEIGHT ANALYZER

    DOEpatents

    Gallagher, J.D. et al.

    1960-11-22

    An apparatus is given for converting binary information into coded decimal form comprising means, in combination with a binary adder, a live memory and a source of bigit pulses, for synchronizing the bigit pulses and the adder output pulses; a source of digit pulses synchronized with every fourth bigit pulse; means for generating a conversion pulse in response to the time coincidence of the adder output pulse and a digit pulse: means having a delay equal to two bigit pulse periods coupling the adder output with the memory; means for promptly impressing said conversion pulse on the input of said memory: and means having a delay equal to one bigit pulse period for again impressing the conversion pulse on the input of the memory whereby a fourth bigit adder pulse results in the insertion into the memory of second, third and fourth bigits.

  13. Providence Heights Wind Farm | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Status In Service Owner Iberdrola Renewables Developer Midwest Wind Energy Location Bureau County IL Coordinates 41.264075, -89.580853 Show Map Loading map......

  14. Property:Height (m) | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Float Wave Electric Power Station + 12 + MHK TechnologiesFloating anchored OTEC plant + 540 + MHK TechnologiesGyroWaveGen + 4.5 + MHK TechnologiesHyPEG + 20 + MHK...

  15. Vantage Pomona Heights | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    lands, and federal lands managed by the BLM, the Bureau of Reclamation, and the U.S. Army - Joint Base Lewis McChord-Yakima Training Center (JBLM-YTC), as well as State of...

  16. THE ROTATION OF THE WHITE LIGHT SOLAR CORONA AT HEIGHT 4 R{sub sun} FROM 1996 TO 2010: A TOMOGRAPHICAL STUDY OF LARGE ANGLE AND SPECTROMETRIC CORONAGRAPH C2 OBSERVATIONS

    SciTech Connect

    Morgan, Huw

    2011-09-10

    Solar rotational tomography is applied to Large Angle and Spectrometric Coronagraph (LASCO) C2/Solar and Heliospheric Observatory (SOHO) observations covering the period 1996-2010, resulting in a set of electron density maps at a height of 4 R{sub sun} from which rotation rates can be calculated. Large variation of rotation rates is measured. Rates are dominated by the Carrington rotation rate (14.18 deg d{sup -1} sidereal), but at times over the solar cycle, rates are measured between -3 and 3 deg d{sup -1} relative to the Carrington rotation rate. Rotation rates can vary considerably between latitudes, even between neighboring latitudes. They can remain relatively stable or change smoothly over long periods of times, or can change rather abruptly. There are periods for certain latitudes (for example, the equator at solar maximum) when the movement is dominated by rapid structural reconfiguration, not a coherent rotation. These results raise new questions regarding the link between the Sun and the corona, and provide fresh challenges to interpretations of the coronal structural evolution and the development of large-scale coronal models. In particular, can interchange reconnection provide an explanation of the considerable latitudinal differences in rotation rates, and what mechanism can explain abrupt changes in rotation rates?

  17. Controlling potential barrier height by changing V-shaped pit size and the effect on optical and electrical properties for InGaN/GaN based light-emitting diodes

    SciTech Connect

    Okada, Narihito Kashihara, Hiroyuki; Sugimoto, Kohei; Yamada, Yoichi; Tadatomo, Kazuyuki

    2015-01-14

    The internal quantum efficiency (IQE) of InGaN/GaN multiple quantum wells (MQWs) with blue light emission was improved by inserting an InGaN/GaN superlattice (SL) beneath the MQWs. While the SL technique is useful for improving the light-emitting diode (LED) performance, its effectiveness from a multilateral point of view requires investigation. V-shaped pits (V-pits), which generate a potential barrier and screen the effect of the threading dislocation, are one of the candidates for increasing the light emission efficiency of LEDs exceptionally. In this research, we investigated the relationship between the V-pit and SL and revealed that the V-pit diameter is strongly correlated with the IQE by changing the number of SL periods. Using scanning near-field optical microscopy and photoluminescence measurements, we demonstrated the distinct presence of the potential barrier formed by the V-pits around the dislocations. The relationship between the V-pit and the number of SL periods resulted in changing the potential barrier height, which is related to the V-pit diameter determined by the number of SL periods. In addition, we made an attempt to insert pit expansion layers (PELs) composed of combination of SL and middle temperature grown GaN layer instead of only SL structure. As a result of the evaluation of LEDs using SL or PEL, the EL intensity was strongly related to pit diameter regardless of the structures to form the V-pits. In addition, it was clear that larger V-pits reduce the efficiency droop, which is considered to be suppression of the carrier loss at high injection current.

  18. Comparing Pulsed Doppler LIDAR with SODAR and Direct Measurements for Wind Assessment

    SciTech Connect

    Kelley, N. D.; Jonkman, B. J.; Scott, G. N.; Pichugina, Y. L.

    2007-07-01

    There is a pressing need for good wind-speed measurements at greater and greater heights to assess the availability of the resource in terms of power production and to identify any frequently occurring atmospheric structural characteristics that may create turbulence that impacts the operational reliability and lifetime of wind turbines and their components. In this paper, we summarize the results of a short study that compares the relative accuracies of wind speeds derived from a high-resolution pulsed Doppler LIDAR operated by the National Oceanic and Atmospheric Administration (NOAA) and a midrange Doppler SODAR with wind speeds measured by four levels of tower-based sonic anemometry up to a height of 116 m.

  19. Glenn Heights, Texas: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    lse,"poi":true,"imageoverlays":,"markercluster":false,"searchmarkers":"","locations":"text":"","title":"","link":null,"lat":32.5487479,"lon":-96.8566667,"alt":0,"address":"","i...

  20. Richmond Heights, Ohio: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    lse,"poi":true,"imageoverlays":,"markercluster":false,"searchmarkers":"","locations":"text":"","title":"","link":null,"lat":41.5528288,"lon":-81.5101208,"alt":0,"address":"","i...

  1. Microscopic Description of Nuclear Fission: Fission Barrier Heights...

    Office of Scientific and Technical Information (OSTI)

    Resource Type: Conference Resource Relation: Conference: Presented at: 5th International Conference on Fission and properties of neutron-rich nuclei, Sanibel Island, FL, United ...

  2. A new technique to measure tunneling barrier height in solid...

    Office of Scientific and Technical Information (OSTI)

    Authors: Mason, Thomas A 1 ; Dattelbaum, Andrew M 1 ; Mara, Nathan A 1 ; Kaschner, George C 1 ; Johnson, Oliver K 2 ; Seegmiller, Daniel 2 ; Fullwood, David T 2 + ...

  3. 'Data Deluge' Pushes Mass Spec Imaging to New Heights

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

    Scalable statistics and machine-learning algorithms are essential for extracting insights from big data, including the increasingly massive datasets being generated by advanced ...

  4. Wind Turbine Scaling Enables Projects to Reach New Heights |...

    Energy.gov [DOE] (indexed site)

    Turbines at the National Wind Technology Center in Boulder, Colorado. The 2013 Wind Technologies Market Report includes a new chapter that focuses on trends in wind turbine ...

  5. About Effective? Height of the Aerosol Atmosphere in Visible...

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

    Kabanov, M. V. Panchenko, Yu. A. Pkhalagov, and S. M. Sakerin Institute of Atmospheric Optics Tomsk, Russia Introduction Aerosol component of the atmosphere is one of the important...

  6. Raman lidar/AERI PBL Height Product (Dataset) | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    AERI measurements of downwelling radiance are used in a physical retrieval approach (Smith et al. 1999, Feltz et al. 1998) to derive profiles of temperature and water vapor. The ...

  7. Reaching New Heights in Accelerator Technology | Jefferson Lab

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

    many of the most compelling questions of the 21st century - regarding the fundamental nature of matter, energy, space and time, dark matter, dark energy, and extra dimensions. ...

  8. Admiralty Inlet Hub-Height Turbulence Measurements from June 2012

    DOE Data Explorer

    Kilcher, Levi

    2012-06-18

    This data is from measurements at Admiralty Head, in admiralty inlet. The measurements were made using an IMU equipped ADV mounted on a mooring, the 'Tidal Turbulence Mooring' or 'TTM'. The inertial measurements from the IMU allows for removal of mooring motion in post processing. The mooring motion has been removed from the stream-wise and vertical velocity signals (u, w). The lateral (v) velocity may have some 'persistent motion contamination' due to mooring sway. The ADV was positioned 11m above the seafloor in 58m of water at 48.1515N, 122.6858W. Units ----- - Velocity data (_u, urot, uacc) is in m/s. - Acceleration (Accel) data is in m/s^2. - Angular rate (AngRt) data is in rad/s. - The components of all vectors are in 'ENU' orientation. That is, the first index is True East, the second is True North, and the third is Up (vertical). - All other quantities are in the units defined in the Nortek Manual. Motion correction and rotation into the ENU earth reference frame was performed using the Python-based open source DOLfYN library (http://lkilcher.github.io/dolfyn/). Details on motion correction can be found there. For additional details on this dataset see the included Marine Energy Technology Symposium paper.

  9. CHIP House Takes Design to Different Heights (Literally)

    Energy.gov [DOE]

    Check out the SCI-Arc/Caltech 2011 Solar Decathlon team's house to find out more about their net-zero energy use home -- the CHIP House.

  10. Eastern Wind Integration and Transmission Study: Executive Summary...

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

    ... the weather of historical years and generate a four-dimensional gridded wind-speed data set. A wind speed time series data set can be extracted and converted to wind power output. ...

  11. Paducah Area Students See Opportunities in STEM | Department of Energy

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

    Area Students See Opportunities in STEM Paducah Area Students See Opportunities in STEM May 28, 2015 - 12:00pm Addthis Darryl Pea of Fluor Paducah Deactivation Project demonstrates use of a wind-speed meter to a class at Carlisle County Middle School. Darryl Pea of Fluor Paducah Deactivation Project demonstrates use of a wind-speed meter to a class at Carlisle County Middle School. PADUCAH, Ky. - Encouraging student interest in pursuing careers in science, technology, engineering, and math

  12. DOE Zero Energy Ready Home Case Study: Amaris Homes, Fishers Circle, Vadnais Heights, MN

    Energy.gov [DOE]

    Case study of a DOE 2015 Housing Innovation Award winning custom home in the cold climate that got a HERS 47 without PV or HERS 22 with PV, with 2x4 24” on-center walls with 1 inch rigid foam plus 3” ccsf in cavity, a slab on grade foundation with 2” rigid foam under and around slab, a vented attic with with 2” ccsf plus R-15 blown cellulose, a central heat pump and HRV.

  13. ARM: Boundary-layer height data with CEIL (Dataset) | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: USDOE Office of Science (SC), Biological and Environmental Research (BER) Country of Publication: United States Availability: ORNL Language: English Subject: 54 ...

  14. Airports Soar to New Heights with Alternative Fuels | Department of Energy

    Energy Saver

    Services | Department of Energy Agreement Template for Energy Conservation and Demand Side Management Services Agreement Template for Energy Conservation and Demand Side Management Services Template agreement between a federal agency and a utility company for the implementation of energy conservation measures and demand side management services. A detailed description of the template is also available below. Download the template agreement. (722.15 KB) Download the model agreement

  15. ARM: Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 1025313 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement (ARM) Archive, Oak ...

  16. ARM: X-SAPR Horizon-to-horizon Range-Height Indicator scan (Dataset...

    Office of Scientific and Technical Information (OSTI)

    OSTI Identifier: 1025326 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement (ARM) Archive, Oak ...

  17. Battery driven 8 channel pulse height analyzer with compact, single gamma-peak display

    DOEpatents

    Morgan, John P.; Piper, Thomas C.

    1991-01-01

    The invention comprises a hand-held wand including an l.e.d. display and a aI photomultiplier tube encased in lead or other suitable gamma shielding material, and an electronics and battery back-pack package connected to the wand.

  18. Influences of photosynthetically active radiation on cladode orientation, stem tilting, and height of cacti

    SciTech Connect

    Nobel, P.S.

    1981-08-01

    Stem orientation and morphology were investigated for 14 species of cacti in Chile, Ecuador, Mexico, and the United States. The interception of photosynthetically active radiation (PAR) was specifically considered for cladodes (flattened stems) of platyopuntias, for tilted cylindrical stems, and in the presence of surrounding vegetation.

  19. DOE/SC-ARM/TR-132 Planetary Boundary Layer (PBL) Height Value

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

    ... Figure 4 shows an example quicklook for a case classified as NRL by the Liu-Liang method. Here, there is only one panel as the wind speed and LLJ do not enter into the ...

  20. OPERATION UPSHOT-KNOTHOLE Project 6.12 DETERMINATION OF HEIGHT...

    Office of Scientific and Technical Information (OSTI)

    ... Attempts to modify a Mark III Type Bhangmeter by substituting a lead sulfide cell for the photo cell made possible successful time of flight measurements on the 260 mm gun when ...

  1. On the influence of shrub height and expansion on boreal climate...

    Office of Scientific and Technical Information (OSTI)

    Authors: Bonfils, C ; Phillips, T ; Lawrence, D ; Cameron-Smith, P ; Riley, W ; Subin, Z Publication Date: 2011-08-22 OSTI Identifier: 1113486 Report Number(s): LLNL-JRNL-495260 ...

  2. DOE ZERH Case Study: Amaris Homes, Fishers Circle, Vadnais Heights, MN

    SciTech Connect

    none,

    2015-09-01

    Case study of a DOE 2015 Housing Innovation Award winning custom home in the cold climate that got a HERS 47 without PV or HERS 22 with PV, with 2x4 24” on-center walls with 1 inch rigid foam plus 3” ccsf in cavity, a slab on grade foundation with 2” rigid foam under and around slab, a vented attic with with 2” ccsf plus R-15 blown cellulose, a central heat pump and HRV.

  3. Mechanisms of flame stabilisation at low lifted height in a turbulent lifted slot-jet flame

    SciTech Connect

    Karami, Shahram; Hawkes, Evatt R.; Talei, Mohsen; Chen, Jacqueline H.

    2015-07-23

    A turbulent lifted slot-jet flame is studied using direct numerical simulation (DNS). A one-step chemistry model is employed with a mixture-fraction-dependent activation energy which can reproduce qualitatively the dependence of the laminar burning rate on the equivalence ratio that is typical of hydrocarbon fuels. The basic structure of the flame base is first examined and discussed in the context of earlier experimental studies of lifted flames. Several features previously observed in experiments are noted and clarified. Some other unobserved features are also noted. Comparison with previous DNS modelling of hydrogen flames reveals significant structural differences. The statistics of flow and relative edge-flame propagation velocity components conditioned on the leading edge locations are then examined. The results show that, on average, the streamwise flame propagation and streamwise flow balance, thus demonstrating that edge-flame propagation is the basic stabilisation mechanism. Fluctuations of the edge locations and net edge velocities are, however, significant. It is demonstrated that the edges tend to move in an essentially two-dimensional (2D) elliptical pattern (laterally outwards towards the oxidiser, then upstream, then inwards towards the fuel, then downstream again). It is proposed that this is due to the passage of large eddies, as outlined in Suetal.(Combust. Flame, vol.144 (3), 2006, pp.494512). However, the mechanism is not entirely 2D, and out-of-plane motion is needed to explain how flames escape the high-velocity inner region of the jet. Finally, the time-averaged structure is examined. A budget of terms in the transport equation for the product mass fraction is used to understand the stabilisation from a time-averaged perspective. The result of this analysis is found to be consistent with the instantaneous perspective. The budget reveals a fundamentally 2D structure, involving transport in both the streamwise and transverse directions, as opposed to possible mechanisms involving a dominance of either one direction of transport. It features upstream transport balanced by entrainment into richer conditions, while on the rich side, upstream turbulent transport and entrainment from leaner conditions balance the streamwise convection.

  4. Mechanisms of flame stabilisation at low lifted height in a turbulent lifted slot-jet flame

    DOE PAGES [OSTI]

    Karami, Shahram; Hawkes, Evatt R.; Talei, Mohsen; Chen, Jacqueline H.

    2015-07-23

    A turbulent lifted slot-jet flame is studied using direct numerical simulation (DNS). A one-step chemistry model is employed with a mixture-fraction-dependent activation energy which can reproduce qualitatively the dependence of the laminar burning rate on the equivalence ratio that is typical of hydrocarbon fuels. The basic structure of the flame base is first examined and discussed in the context of earlier experimental studies of lifted flames. Several features previously observed in experiments are noted and clarified. Some other unobserved features are also noted. Comparison with previous DNS modelling of hydrogen flames reveals significant structural differences. The statistics of flow andmore » relative edge-flame propagation velocity components conditioned on the leading edge locations are then examined. The results show that, on average, the streamwise flame propagation and streamwise flow balance, thus demonstrating that edge-flame propagation is the basic stabilisation mechanism. Fluctuations of the edge locations and net edge velocities are, however, significant. It is demonstrated that the edges tend to move in an essentially two-dimensional (2D) elliptical pattern (laterally outwards towards the oxidiser, then upstream, then inwards towards the fuel, then downstream again). It is proposed that this is due to the passage of large eddies, as outlined in Suet al.(Combust. Flame, vol. 144 (3), 2006, pp. 494–512). However, the mechanism is not entirely 2D, and out-of-plane motion is needed to explain how flames escape the high-velocity inner region of the jet. Finally, the time-averaged structure is examined. A budget of terms in the transport equation for the product mass fraction is used to understand the stabilisation from a time-averaged perspective. The result of this analysis is found to be consistent with the instantaneous perspective. The budget reveals a fundamentally 2D structure, involving transport in both the streamwise and transverse directions, as opposed to possible mechanisms involving a dominance of either one direction of transport. Lastly, it features upstream transport balanced by entrainment into richer conditions, while on the rich side, upstream turbulent transport and entrainment from leaner conditions balance the streamwise convection.« less

  5. Mechanisms of flame stabilisation at low lifted height in a turbulent lifted slot-jet flame

    SciTech Connect

    Karami, Shahram; Hawkes, Evatt R.; Talei, Mohsen; Chen, Jacqueline H.

    2015-07-23

    A turbulent lifted slot-jet flame is studied using direct numerical simulation (DNS). A one-step chemistry model is employed with a mixture-fraction-dependent activation energy which can reproduce qualitatively the dependence of the laminar burning rate on the equivalence ratio that is typical of hydrocarbon fuels. The basic structure of the flame base is first examined and discussed in the context of earlier experimental studies of lifted flames. Several features previously observed in experiments are noted and clarified. Some other unobserved features are also noted. Comparison with previous DNS modelling of hydrogen flames reveals significant structural differences. The statistics of flow and relative edge-flame propagation velocity components conditioned on the leading edge locations are then examined. The results show that, on average, the streamwise flame propagation and streamwise flow balance, thus demonstrating that edge-flame propagation is the basic stabilisation mechanism. Fluctuations of the edge locations and net edge velocities are, however, significant. It is demonstrated that the edges tend to move in an essentially two-dimensional (2D) elliptical pattern (laterally outwards towards the oxidiser, then upstream, then inwards towards the fuel, then downstream again). It is proposed that this is due to the passage of large eddies, as outlined in Suet al.(Combust. Flame, vol. 144 (3), 2006, pp. 494–512). However, the mechanism is not entirely 2D, and out-of-plane motion is needed to explain how flames escape the high-velocity inner region of the jet. Finally, the time-averaged structure is examined. A budget of terms in the transport equation for the product mass fraction is used to understand the stabilisation from a time-averaged perspective. The result of this analysis is found to be consistent with the instantaneous perspective. The budget reveals a fundamentally 2D structure, involving transport in both the streamwise and transverse directions, as opposed to possible mechanisms involving a dominance of either one direction of transport. Lastly, it features upstream transport balanced by entrainment into richer conditions, while on the rich side, upstream turbulent transport and entrainment from leaner conditions balance the streamwise convection.

  6. Changing the Way We Fly: Biofuels Made from Waste Gases Reaching New Heights with Airline Industry

    Office of Energy Efficiency and Renewable Energy (EERE)

    Booking a flight soon? You may be leaving on a plane powered by renewable bio-based jet fuel that was made from industrial waste gases.

  7. Potential Wind Capacity at 110-m Hub Height for the United States

    WindExchange

  8. Potential Wind Capacity at 140-m Hub Height for the United States

    WindExchange

  9. 23 V.S.A. Section 1402 Overweight, Width, Height, and Length...

    OpenEI (Open Energy Information) [EERE & EIA]

    FeesLegal Abstract Sets forth fee requirements for issuing permits for operating a motor vehicle in excess of weight and size limits. Published NA Year Signed or Took Effect...

  10. Eddy-driven sediment transport in the Argentine Basin: Is the height of the Zapiola Rise hydrodynamically controlled?

    DOE PAGES [OSTI]

    Weijer, Wilbert; Maltrud, Mathew E.; Homoky, William B.; Polzin, Kurt L.; Maas, Leo R. M.

    2015-03-27

    In this study, we address the question whether eddy-driven transports in the Argentine Basin can be held responsible for enhanced sediment accumulation over the Zapiola Rise, hence accounting for the existence and growth of this sediment drift. To address this question, we perform a 6 year simulation with a strongly eddying ocean model. We release two passive tracers, with settling velocities that are consistent with silt and clay size particles. Our experiments show contrasting behavior between the silt fraction and the lighter clay. Due to its larger settling velocity, the silt fraction reaches a quasisteady state within a few years,more » with abyssal sedimentation rates that match net input. In contrast, clay settles only slowly, and its distribution is heavily stratified, being transported mainly along isopycnals. Yet, both size classes display a significant and persistent concentration minimum over the Zapiola Rise. We show that the Zapiola Anticyclone, a strong eddy-driven vortex that circulates around the Zapiola Rise, is a barrier to sediment transport, and hence prevents significant accumulation of sediments on the Rise. We conclude that sediment transport by the turbulent circulation in the Argentine Basin alone cannot account for the preferred sediment accumulation over the Rise. We speculate that resuspension is a critical process in the formation and maintenance of the Zapiola Rise.« less

  11. Eddy-driven sediment transport in the Argentine Basin: Is the height of the Zapiola Rise hydrodynamically controlled?

    SciTech Connect

    Weijer, Wilbert; Maltrud, Mathew E.; Homoky, William B.; Polzin, Kurt L.; Maas, Leo R. M.

    2015-03-27

    In this study, we address the question whether eddy-driven transports in the Argentine Basin can be held responsible for enhanced sediment accumulation over the Zapiola Rise, hence accounting for the existence and growth of this sediment drift. To address this question, we perform a 6 year simulation with a strongly eddying ocean model. We release two passive tracers, with settling velocities that are consistent with silt and clay size particles. Our experiments show contrasting behavior between the silt fraction and the lighter clay. Due to its larger settling velocity, the silt fraction reaches a quasisteady state within a few years, with abyssal sedimentation rates that match net input. In contrast, clay settles only slowly, and its distribution is heavily stratified, being transported mainly along isopycnals. Yet, both size classes display a significant and persistent concentration minimum over the Zapiola Rise. We show that the Zapiola Anticyclone, a strong eddy-driven vortex that circulates around the Zapiola Rise, is a barrier to sediment transport, and hence prevents significant accumulation of sediments on the Rise. We conclude that sediment transport by the turbulent circulation in the Argentine Basin alone cannot account for the preferred sediment accumulation over the Rise. We speculate that resuspension is a critical process in the formation and maintenance of the Zapiola Rise.

  12. EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line Project; Yakima, Grant, Benton, and Kittitas Counties, Washington

    Energy.gov [DOE]

    The Bureau of Land Management is preparing, with DOE’s Bonneville Power Administration (BPA) as a cooperating agency, an EIS that evaluates the potential environmental impacts of a proposal to construct a 230-kV transmission line in Washington State. BPA’s proposed action is to interconnect the proposed transmission line to an existing BPA substation.

  13. GAMMA-PULSE-HEIGHT EVALUATION OF A USA SAVANNAH RIVER SITE BURIAL GROUND SPECIAL CONFIGURATION WASTE ITEM

    SciTech Connect

    Dewberry, R.; Sigg, R.; Salaymeh, S.

    2009-03-23

    The Savannah River Site (SRS) Burial Ground had a container labeled as Box 33 for which they had no reliable solid waste stream designation. The container consisted of an outer box of dimensions 48-inch x 46-inch x 66-inch and an inner box that contained high density and high radiation dose material. From the outer box Radiation Control measured an extremity dose rate of 22 mrem/h. With the lid removed from the outer box, the maximum dose rate measured from the inner box was 100 mrem/h extremity and 80 mrem/h whole body. From the outer box the material was sufficiently high in density that the Solid Waste Management operators were unable to obtain a Co-60 radiograph of the contents. Solid Waste Management requested that the Analytical Development Section of Savannah River National Laboratory perform a {gamma}-ray assay of the item to evaluate the radioactive content and possibly to designate a solid waste stream. This paper contains the results of three models used to analyze the measured {gamma}-ray data acquired in an unusual configuration.

  14. Quadrennial Technology Review 2015: Technology Assessments--Wind Power

    SciTech Connect

    none,

    2015-10-07

    Wind power has become a mainstream power source in the U.S. electricity portfolio, supplying 4.9% of the nation’s electricity demand in 2014. With more than 65 GW installed across 39 states at the end of 2014, utility-scale wind power is a cost-effective source of low-emissions power generation throughout much of the nation. The United States has significant sustainable land-based and offshore wind resource potential, greater than 10 times current total U.S. electricity consumption. A technical wind resource assessment conducted by the Department of Energy (DOE) in 2009 estimated that the land-based wind energy potential for the contiguous United States is equivalent to 10,500 GW capacity at 80 meters (m) hub and 12,000 GW capacity at 100 meters (m) hub heights, assuming a capacity factor of at least 30%. A subsequent 2010 DOE report estimated the technical offshore wind energy potential to be 4,150 GW. The estimate was calculated from the total offshore area within 50 nautical miles of shore in areas where average annual wind speeds are at least 7 m per second at a hub height of 90 m.

  15. Alliance for Sustainable Colorado Renovation Raises Its Energy Performance to New Heights, Commercial Building Energy Efficiency (Fact Sheet); Energy Efficiency & Renewable Energy (EERE)

    SciTech Connect

    2015-03-01

    The Alliance for Sustainable Colorado (The Alliance) is a nonprofit organization aiming to transform sustainability from vision to reality. Part of its mission is to change the operating paradigms of commercial building design to make them more sustainable. Toward that end The Alliance uses its headquarters, The Alliance Center at 1536 Wynkoop Street in Denver, as a living laboratory, conductingpilot studies of innovative commercial-building-design solutions for using and generating energy.

  16. Electrical generation using a vertical-axis wind turbine

    SciTech Connect

    Clark, R.N.

    1982-12-01

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

  17. Viralcool | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Viralcool Jump to: navigation, search Name: Viralcool Place: Brazil Product: This company operates the 90m liter Viralcool I bioethanol plant located in Pitangueiras in the state...

  18. NREL: Wind Research - Offshore Wind Resource Characterization

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

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

  19. In-phase waves: Their behavior, internal stratification and fabric

    SciTech Connect

    Cheel, R.J. (Brock Univ., St. Catharines, Ontario (Canada). Dept. of Earth Sciences); Udri, A. (Freiburg Univ. (Germany). Dept. of Geologie)

    1993-03-01

    Experiments were conducted in 0.305m wide, 9m long recirculating sediment flume on a bed of quartz sand (mean diameter of 0.18mm). The experiments included eight runs over the following range of conditions: 0.0605m [<=] depth [<=] 0.068m, 0.51m/s [<=] mean flow velocity [<=] 0.90m/s and 0.63 [<=] Froze Number (F) [<=] 1.1. For F < 0.83 dunes were the dominant bedform and these became longer and lower as F increased. At F = 0.83 the bed was nominally plane but locally and temporarily developed low in-phase waves or dunes. Post-run bed profiles showed symmetrical bedwaves with average length (L) of 0.26m and average height (H) of 0.005m. A complete cycle was characterized by: increased height of bed and water surface waves [r arrow] upstream migration [r arrow] breaking or decay [r arrow] planing of bed surface [r arrow] growth of new in-phase waves (initially migrating downstream and then remaining stationary during continued vertical growth). Each in-phase wave normally behaved independently of other waves although less commonly a breaking wave would trigger breaking of the next downstream wave. For F > 1.0 in-phase waves behaved as described above but a breaking wave would more commonly cause breaking of other waves. With increasing F it became more common for waves to break and rebuild quickly without complete planing of the bed surface. However, complete cycles occurred frequently with the following significant differences: (1) the upstream-migrating antidune developed upstream slopes that approached 25[degree]; (2) planing was accomplished by the rapid migration of a low, asymmetrical bedform through the antidune trough.

  20. A computational framework for uncertainty quantification and stochastic optimization in unit commitment with wind power generation.

    SciTech Connect

    Constantinescu, E. M; Zavala, V. M.; Rocklin, M.; Lee, S.; Anitescu, M.

    2011-02-01

    We present a computational framework for integrating a state-of-the-art numerical weather prediction (NWP) model in stochastic unit commitment/economic dispatch formulations that account for wind power uncertainty. We first enhance the NWP model with an ensemble-based uncertainty quantification strategy implemented in a distributed-memory parallel computing architecture. We discuss computational issues arising in the implementation of the framework and validate the model using real wind-speed data obtained from a set of meteorological stations. We build a simulated power system to demonstrate the developments.

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

    SciTech Connect

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

    1989-11-01

    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.

  2. Free-flow variability on the Jess and Souza Ranches, Altamont Pass

    SciTech Connect

    Nierenberg, R.

    1989-03-01

    This report is one of a series of such documents that present the findings of field tests conducted under the Department of Energy's (DOE) Cooperative Field Test Program with the US wind industry. The report provides the results of a study to collect data at two windfarms. The two wind turbine arrays, located in the Altamont Pass east of San Francisco, were instrumented with anemometers and a central monitoring computer. To obtain a high spatial density of wind-speed measurements, every other turbine in both arrays was instrumented. Wind-speed data were collected over a period of four days during the summer high-wind season with all turbines shut down. The resultant data set was analyzed to determine the spatial variability of the wind resource in the two arrays. Because no turbine wakes were present, variation in the flow was caused by the interaction of the flow with the terrain and was not a function of turbine wake interaction. The free-flow data sets can be used by other researchers to refine numerical free-flow computer models. The data sets will be used to fine tune and validate these computer models. In addition, the free-flow data will be compared to results of a wake energy deficit study also under way on these turbine arrays. 56 figs., 14 tabs.

  3. Slide 1

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

    Insects as Clear Air Vertical Velocity Profilers Edward Luke Brookhaven National Lab Pavlos Kollias McGill University Steve Klein LLNL Velocity (m/s) Height (km) Velocity (m/s) Height (km) Cloud Base Height Velocity Velocity (m/s) Height (km) Velocity Velocity Updraft Insect Spectrum Velocity (m/s) Height (km) Velocity (m/s) Height (km) Velocity (m/s) Height (km) Velocity (m/s) Height (km) Velocity (m/s) Height (km) Velocity (m/s) Height (km) Velocity (m/s) Height (km) Velocity (m/s) Height (km)

  4. ARM - Datastreams - mwrp

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

    equilibriumLevelPres ( time ) Frequency gHz frequency ( frequency ) Height meters above ground level height ( height ) Zenith-pointing infrared temperature at 10um K...

  5. Use of ARM Products in Reanalysis Applications and IPCC Model Assessment

    SciTech Connect

    Walsh, John E; Chapman, William L

    2011-09-30

    Year-3 of the project was spent developing an observed cloud climatology for Barrow, AK and relating the observed cloud fractions to the surface circulation patterns and locally observed winds. Armed with this information, we identified errors and sources of errors of cloud fraction simulations by numerical models in the Arctic. Specifically, we compared the cloud simulations output by the North American Regional Reanalysis (NARR) to corresponding observed cloud fractions obtained by the Department of Energy’s Atmospheric Radiation Measurement (ARM) program for four mid-season months: (January, April, July, and October). Reanalyses are obtained from numerical weather prediction models that are not run in real-time. Instead, a reanalysis model ingests a wide variety of historical observations for the purpose of producing a gridded dataset of many model-derived quantities that are as temporally homogeneous as possible. Therefore, reanalysis output can be used as a proxy for observations, although some biases and other errors are inevitable because of model parameterizations and observational gaps. In the observational analysis we documented the seasonality of cloudiness at the north slope including cloud base height and dependence on synoptic regime. We followed this with an evaluation of the associations of wind-speed and direction and cloud amounts in both the observational record and the reanalysis model. The Barrow cloud fraction data show that clear conditions are most often associated with anomalous high pressure to the north of Barrow, especially in spring and early summer. Overcast skies are most commonly associated with anomalous low pressure to the south. The observational analysis shows that low, boundary layer clouds are the most common type of cloud observed North Slope ARM observing site. However, these near-surface clouds are a major source of errors in the NARR simulations. When compared to observations, the NARR over-simulates the fraction of

  6. Microsoft Word - Heliostat_Cost_Reduction_Main_Report_v2 _NEW...

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

    ... This 2006 price yields electricity at 0.067kWh and hydrogen at 3.20kg. We propose research and development that should ultimately lead to a price as low as 90m 2 , which ...

  7. Usina Gloria | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Jump to: navigation, search Name: Usina Gloria Place: Brazil Product: The company will run a 90m liter ethanol plant, together with a 30m biodiesel facility in Mato Grosso do...

  8. Variability of interconnected wind plants: correlation length and its dependence on variability time scale

    DOE PAGES [OSTI]

    St. Martin, Clara M.; Lundquist, Julie K.; Handschy, Mark A.

    2015-04-02

    The variability in wind-generated electricity complicates the integration of this electricity into the electrical grid. This challenge steepens as the percentage of renewably-generated electricity on the grid grows, but variability can be reduced by exploiting geographic diversity: correlations between wind farms decrease as the separation between wind farms increases. However, how far is far enough to reduce variability? Grid management requires balancing production on various timescales, and so consideration of correlations reflective of those timescales can guide the appropriate spatial scales of geographic diversity grid integration. To answer 'how far is far enough,' we investigate the universal behavior of geographic diversity by exploring wind-speed correlations using three extensive datasets spanning continents, durations and time resolution. First, one year of five-minute wind power generation data from 29 wind farms span 1270 km across Southeastern Australia (Australian Energy Market Operator). Second, 45 years of hourly 10 m wind-speeds from 117 stations span 5000 km across Canada (National Climate Data Archive of Environment Canada). Finally, four years of five-minute wind-speeds from 14 meteorological towers span 350 km of the Northwestern US (Bonneville Power Administration). After removing diurnal cycles and seasonal trends from all datasets, we investigate dependence of correlation length on time scale by digitally high-pass filtering the data on 0.25–2000 h timescales and calculating correlations between sites for each high-pass filter cut-off. Correlations fall to zero with increasing station separation distance, but the characteristic correlation length varies with the high-pass filter applied: the higher the cut-off frequency, the smaller the station separation required to achieve de-correlation. Remarkable similarities between these three datasets reveal behavior that, if universal, could be particularly useful for grid management. For high

  9. Variability of interconnected wind plants: correlation length and its dependence on variability time scale

    SciTech Connect

    St. Martin, Clara M.; Lundquist, Julie K.; Handschy, Mark A.

    2015-04-02

    The variability in wind-generated electricity complicates the integration of this electricity into the electrical grid. This challenge steepens as the percentage of renewably-generated electricity on the grid grows, but variability can be reduced by exploiting geographic diversity: correlations between wind farms decrease as the separation between wind farms increases. However, how far is far enough to reduce variability? Grid management requires balancing production on various timescales, and so consideration of correlations reflective of those timescales can guide the appropriate spatial scales of geographic diversity grid integration. To answer 'how far is far enough,' we investigate the universal behavior of geographic diversity by exploring wind-speed correlations using three extensive datasets spanning continents, durations and time resolution. First, one year of five-minute wind power generation data from 29 wind farms span 1270 km across Southeastern Australia (Australian Energy Market Operator). Second, 45 years of hourly 10 m wind-speeds from 117 stations span 5000 km across Canada (National Climate Data Archive of Environment Canada). Finally, four years of five-minute wind-speeds from 14 meteorological towers span 350 km of the Northwestern US (Bonneville Power Administration). After removing diurnal cycles and seasonal trends from all datasets, we investigate dependence of correlation length on time scale by digitally high-pass filtering the data on 0.25–2000 h timescales and calculating correlations between sites for each high-pass filter cut-off. Correlations fall to zero with increasing station separation distance, but the characteristic correlation length varies with the high-pass filter applied: the higher the cut-off frequency, the smaller the station separation required to achieve de-correlation. Remarkable similarities between these three datasets reveal behavior that, if universal, could be particularly useful for grid management. For high

  10. Investigations of release phenomenon of volatile organic compounds and particulates from residual storage chip piles

    SciTech Connect

    Mohan, S.; Nagarkatti, M.

    1996-12-31

    This paper outlines the method for estimating Particulate Matter and Volatile Organic Compounds (VOCs) emissions from wood handling and storage operations at a pulp mill. Fugitive particulate matter emissions from wood handling and storage operations are due to material load/dropout operations, wind erosion from storage piles and vehicular traffic on paved roads. The particulate matter emissions are a function of a number of variables like windspeed, surface moisture content, material silt content, and number of days of precipitation. Literature review attributes VOC emissions to biological, microbiological, chemical, and physical processes occurring in wood material storage pile. The VOC emissions are from the surface of these piles and the VOC released during retrieval of chips from the pile. VOC emissions are based on the chip throughput, number of turnovers, moisture content and surface area of the pile. The emission factors with the requisite calculation methodology to be utilized for quantifying VOC emissions from chip piles has been discussed in this paper.

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

    SciTech Connect

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

    1985-01-01

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

  12. Ultimate Heat Sink Cooling Pond and Spray Pond Analysis Models.

    Energy Science and Technology Software Center

    1999-05-02

    Version 00 Three programs model performance of an ultimate heat sink cooling pond. National Weather Service data is read and analyzed to predict periods of lowest cooling performance and highest evaporative loss. The data is compared to local site data for significant differences. Then the maximum pond temperature is predicted. Five programs model performance of an ultimate heat sink spray pond. The cooling performance, evaporative water loss, and drift water loss as a function ofmore » windspeed are estimated for a spray field. These estimates are used in conjunction with National Weather Service data to predict periods of lowest cooling performance and highest evaporative loss. This data is compared to local site data for significant differences. Then the maximum pond temperature is predicted.« less

  13. Wind speed forecasting in the central California wind resource area

    SciTech Connect

    McCarthy, E.F.

    1997-12-31

    A wind speed forecasting program was implemented in the summer seasons of 1985 - 87 in the Central California Wind Resource Area (WRA). The forecasting program is designed to use either meteorological observations from the WRA and local upper air observations or upper air observations alone to predict the daily average windspeed at two locations. Forecasts are made each morning at 6 AM and are valid for a 24 hour period. Ease of use is a hallmark of the program as the daily forecast can be made using data entered into a programmable HP calculator. The forecasting program was the first step in a process to examine whether the electrical energy output of an entire wind power generation facility or defined subsections of the same facility could be predicted up to 24 hours in advance. Analysis of the results of the summer season program using standard forecast verification techniques show the program has skill over persistence and climatology.

  14. Preliminary results of Aruba wind resource assessment

    SciTech Connect

    Guda, M.H.

    1996-12-31

    As part of a project to assess the possibilities for wind energy utilitization in the Dutch Antilles islands, windspeed and -direction data were collected in Aruba for two years, from March 1992 to February 1994. Five sites that were estimated to be representative for the islands` wind regimes, were monitored during this period: two sites on the windward coast, one east and one west; two inland sites, again one east and one west, and one site topping the cliffs overlooking the eastern windward coast. Additionally, twenty years worth of data were analyzed for the reference site at the airport, which is in the middle part of the island, on the leeward coast. Correlation calculations between these data and the data for the project sites were performed, in order to establish a methodology for estimating the long-term behavior of the wind regimes at these sites. 8 figs., 3 tabs.

  15. Wind turbine performance: Methods and criteria for reliability of measured power curves

    SciTech Connect

    Griffin, D.A.

    1996-12-31

    In order to evaluate the performance of prototype turbines, and to quantify incremental changes in performance through field testing, Advanced Wind Turbines (AWT) has been developing methods and requirements for power curve measurement. In this paper, field test data is used to illustrate several issues and trends which have resulted from this work. Averaging and binning processes, data hours per wind-speed bin, wind turbulence levels, and anemometry methods are all shown to have significant impacts on the resulting power curves. Criteria are given by which the AWT power curves show a high degree of repeatability, and these criteria are compared and contrasted with current published standards for power curve measurement. 6 refs., 5 figs., 5 tabs.

  16. Stand-alone irrigation pumping with wind energy

    SciTech Connect

    Clark, R.N.

    1982-12-01

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

  17. ARM - Datastreams - wacrspeccmaskxpol

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

    Units Variable Locator Mask for Spectra unitless LocatorMask ( time, heights ) Radar Doppler Mean Doppler Velocity ms MeanDopplerVelocity ( time, heights ) Calculated...

  18. ARM - Campaign Instrument - nawx

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

    available measurements, including those recorded for diagnostic or quality assurance purposes. Cloud fraction Cloud base height Cloud top height Radar Doppler Radar reflectivity...

  19. ARM - Datastreams - wacrspeccmaskcopol

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

    Units Variable Locator Mask for Spectra unitless LocatorMask ( time, heights ) Radar Doppler Mean Doppler Velocity ms MeanDopplerVelocity ( time, heights ) Calculated...

  20. ARM - Datastreams - mwacr

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

    ( height ) North latitude degreeN lat ( time ) East longitude degreeE lon ( time ) Radar Doppler Mean Doppler velocity ms meandopplervelocity ( time, height ) Receiver...

  1. ARM - Datastreams - twr

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

    qcvaporpressuremean ( time, height ) Quality check results on field: Wind direction vector mean unitless qcwdirvecmean ( time, height ) Quality check results on field: Wind...

  2. Search for: All records | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    ARM: X-SAPR Range Height Indicator scan Widener, Kevin ; Nelson, Dan ; Bharadwaj, Nitin ; Lindenmaier, Iosif ; Collis, Scott X-SAPR Range Height Indicator scan View Dataset January ...

  3. ARM - Data Announcements Article

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

    6, 2015 Data Announcements New and Improved Ceilometer Datastream Available Bookmark and Share First cloud base height data are shown above at the various heights at which cloud ...

  4. ARM: Multi-Filter Radiometer (MFR): upwelling irradiance at 3...

    Office of Scientific and Technical Information (OSTI)

    Multi-Filter Radiometer (MFR): upwelling irradiance at 3-meter height Title: ARM: Multi-Filter Radiometer (MFR): upwelling irradiance at 3-meter height Multi-Filter Radiometer ...

  5. Combined Retrieval, Microphysical Retrievals and Heating Rates...

    Office of Scientific and Technical Information (OSTI)

    Subject: 54 Environmental Sciences Cloud optical depth; Cloud base height; Cloud top height; Ice water path; Ice water content; Longwave broadband downwelling irradiance; Longwave ...

  6. ARM - VAP Product - pblhtsondeyr1mcfarl

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

    height Planetary boundary layer height above mean sea level calculated from bulk Richardson number using critical threshold of 0.5 m pblheightbulkrichardsonpt5 ( time )...

  7. Venango County, Pennsylvania: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Pennsylvania Pleasantville, Pennsylvania Polk, Pennsylvania Rouseville, Pennsylvania Seneca, Pennsylvania Sugarcreek, Pennsylvania Utica, Pennsylvania Woodland Heights,...

  8. Methods for developing seismic and extreme wind-hazard models for evaluating critical structures and equipment at US Department of Energy facilities and commercial plutonium facilities in the United States

    SciTech Connect

    Coats, D.W.; Murray, R.C.; Bernreuter, D.L.

    1981-02-04

    Lawrence Livermore National Laboratory (LLNL) is developing seismic and wind hazard models for the US Department of Energy (DOE). The work is part of a three-phase effort to establish building design criteria developed with a uniform methodology for seismic and wind hazards at the various DOE sites throughout the United States. In Phase 1, LLNL gathered information on the sites and their critical facilities, including nuclear reactors, fuel-reprocessing plants, high-level waste storage and treatment facilities, and special nuclear material facilities. Phase 2 - development of seismic and wind hazard models - is discussed in this paper, which summarizes the methodologies used by seismic and extreme-wind experts and gives sample hazard curves for the first sites to be modeled. These hazard models express the annual probability that the site will experience an earthquake (or windspeed) greater than some specified magnitude. In the final phase, the DOE will use the hazards models and LLNL-recommended uniform design criteria to evaluate critical facilities. The methodology presented in this paper also was used for a related LLNL study - involving the seismic assessment of six commercial plutonium fabrication plants licensed by the US Nuclear Regulatory Commission (NRC). Details and results of this reassessment are documented in reference.

  9. Improved Offshore Wind Resource Assessment in Global Climate Stabilization Scenarios

    SciTech Connect

    Arent, D.; Sullivan, P.; Heimiller, D.; Lopez, A.; Eurek, K.; Badger, J.; Jorgensen, H. E.; Kelly, M.; Clarke, L.; Luckow, P.

    2012-10-01

    This paper introduces a technique for digesting geospatial wind-speed data into areally defined -- country-level, in this case -- wind resource supply curves. We combined gridded wind-vector data for ocean areas with bathymetry maps, country exclusive economic zones, wind turbine power curves, and other datasets and relevant parameters to build supply curves that estimate a country's offshore wind resource defined by resource quality, depth, and distance-from-shore. We include a single set of supply curves -- for a particular assumption set -- and study some implications of including it in a global energy model. We also discuss the importance of downscaling gridded wind vector data to capturing the full resource potential, especially over land areas with complex terrain. This paper includes motivation and background for a statistical downscaling methodology to account for terrain effects with a low computational burden. Finally, we use this forum to sketch a framework for building synthetic electric networks to estimate transmission accessibility of renewable resource sites in remote areas.

  10. Development of a windmill for water pumping for developing countries

    SciTech Connect

    Gupta, R.P.; Chandra, S.K.; Mantrawadi, S.C.

    1983-12-01

    Development of an all-metal windmill with 5 meter wheel diameter and 12 blades is described. Sound methods of mechanical and aerodynamic design are used, even though the windmill is simple enough to be fabricated in a small workshop using commonly available mild steel sections. The windmill is connected to a single acting reciprocating pump which can be inserted in a tubewell. Stroke of the pump as well as pump diameter can be varied to suit the site conditions as the water table and wind velocity vary. The designed windspeed is kept low at 14 KMPH so that the windmill is suitable for low wind regimes and the cut-in wind speed is as low as 6 KMPH. The overall efficiency of the wind pump is found to be about 12-15 percent. The cost of the wind pump together with all metallic 7 meter high tower is about US $1,200, with a life expectancy of 20 years. Few of the windmills are already working and cost of water pumping is comparable to diesel or electric pumping.

  11. Atmospheric State, Cloud Microphysics and Radiative Flux

    DOE Data Explorer

    Mace, Gerald

    2008-01-15

    Atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates for the ARM Southern Great Plains (SGP) site. The data represent a characterization of the physical state of the atmospheric column compiled on a five-minute temporal and 90m vertical grid. Sources for this information include raw measurements, cloud property and radiative retrievals, retrievals and derived variables from other third-party sources, and radiative calculations using the derived quantities.

  12. Atmospheric State, Cloud Microphysics and Radiative Flux

    DOE Data Explorer

    Mace, Gerald

    Atmospheric thermodynamics, cloud properties, radiative fluxes and radiative heating rates for the ARM Southern Great Plains (SGP) site. The data represent a characterization of the physical state of the atmospheric column compiled on a five-minute temporal and 90m vertical grid. Sources for this information include raw measurements, cloud property and radiative retrievals, retrievals and derived variables from other third-party sources, and radiative calculations using the derived quantities.

  13. may-99.PDF

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

    ... had a similar height structure. Figure 3 shows a time height cross section of the vertical motion and the radar ... Prodigious amounts of ice are generated in even these ...

  14. David Cohan

    Energy.gov [DOE]

    [[{"type":"media","view_mode":"media_large","fid":"1069436","attributes":{"alt":"Headshot of David Cohan.","class":"media-image caption","height":"162","style":"width: 108px; height: 162px; float:...

  15. Microsoft Word - Cover Page - Exhibit 5

    Energy Saver

    115 120 125 130 135 140 145 150 155 Structure Quantity Structure Height EXHIBIT 5 Project Structure Height Breakdown - HVDC & 345-kV HVDC Structures 345-kV Structures 27-JUN-2013

  16. Mark A. McCall

    Office of Energy Efficiency and Renewable Energy (EERE)

    [[{"type":"media","view_mode":"media_large","fid":"964941","attributes":{"alt":"Mark McCall_Headshot_August 2015.jpg","class":"media-image caption","height":"480","style":"width: 384px; height:...

  17. Coastal Harbors Modeling Facility | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    None Wavemaking Capabilities Wavemaking Capabilities Yes Maximum Wave Height(m) 0.2 Maximum Wave Height(m) at Wave Period(s) 2.3 Wave Period Range(s) 2.3 Current Velocity...

  18. City of Los Angeles- Zoning Code

    Energy.gov [DOE]

    Chapter I of Los Angeles' Municipal Code, Height of Building or Structures, provides an exemption for solar energy devices, or similar structures. They may be erected above the height limit...

  19. Dong Kwun Kim

    Energy.gov [DOE]

    [[{"type":"media","view_mode":"media_large","fid":"885466","attributes":{"alt":"Dong Kim Portrait.jpg","class":"media-image caption","height":"480","style":"font-size: 12px; width: 360px; height:...

  20. CX-000065: Categorical Exclusion Determination

    Energy.gov [DOE]

    Huber Heights' Replacement of Heating/Cooling TowerCX(s) Applied: B5.1, B2.5Date: 11/12/2009Location(s): Huber Heights, OhioOffice(s): Energy Efficiency and Renewable Energy

  1. ARM - Data Announcements Article

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

    7, 2015 Data Announcements Doppler Lidar Profile VAPs Now Available Bookmark and Share Top: Seen here are height-time display of wind speed and direction.Bottom: Height-time ...

  2. Workplace Charging Challenge Partner: Township High School District 214

    Energy.gov [DOE]

    Joined the Challenge: October 2014Headquarters: Arlington Heights, ILCharging Locations: Arlington Heights, IL; Buffalo Grove, IL; Elk Grove Village, IL; Mount Prospect, IL; Rolling Meadows, IL;...

  3. Research Highlight

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

    Res. Ltr, Vol.31, L10106, doi:10.10292004GL019539. Composite statistics compare ARM measurements and ECMWF model-derived cloud properties of (a) base height, (b) cloud top height, ...

  4. dong(2)-99.PDF

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

    The ground-based measurements at the ARM SGP site are cloud top height, cloud base height, cloud LWP, and downward solar ... is proportional to the 6th power of cloud particle size, ...

  5. Slide 1

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

    (ARSCL) * cloud boundaries, hydrometeor height distributions and estimates of their radar reflectivities, vertical velocities, and Doppler spectral widths * "Old" ARSCL -...

  6. EIS-0505: EPA Notice of Availability of Supplemental Draft Environmental Impact Statement

    Energy.gov [DOE]

    EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line Project; Yakima, Grant, Benton, and Kittitas Counties, Washington

  7. Sullivan County, Tennessee: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Tennessee Bluff City, Tennessee Bristol, Tennessee Colonial Heights, Tennessee Johnson City, Tennessee Kingsport, Tennessee Spurgeon, Tennessee Walnut Hill, Tennessee...

  8. Microsoft Word - Cover Page - Exhibit 13

    Energy Saver

    ... Transmission Line Information Proposed structure type: HVDC horizontal lattice Height ... PRELIMINARY Transmission Line Information Proposed structure type: HVDC horizontal ...

  9. EIS-0505: Notice of Intent to Prepare Environmental Impact Statement

    Energy.gov [DOE]

    Vantage to Pomona Heights 230 kV Transmission Line Project, Yakima, Grant, Benton and Kittitas Counties, Washington

  10. Northumberland County, Pennsylvania: Energy Resources | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    Marion Heights, Pennsylvania Marshallton, Pennsylvania McEwensville, Pennsylvania Milton, Pennsylvania Mount Carmel, Pennsylvania Northumberland, Pennsylvania Riverside,...

  11. EIS-0505: Supplemental Draft Environmental Impact Statement

    Energy.gov [DOE]

    EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line Project; Yakima, Grant, Benton, and Kittitas Counties, Washington

  12. EIS-0505: Draft Environmental Impact Statement

    Energy.gov [DOE]

    EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line Project; Yakima, Grant, Benton, and Kittitas Counties, Washington

  13. Allegheny County, Pennsylvania: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Pennsylvania Baldwin, Pennsylvania Bell Acres, Pennsylvania Bellevue, Pennsylvania Ben Avon Heights, Pennsylvania Ben Avon, Pennsylvania Bethel Park, Pennsylvania Blawnox,...

  14. Indiana County, Pennsylvania: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Armagh, Pennsylvania Black Lick, Pennsylvania Blairsville, Pennsylvania Cherry Tree, Pennsylvania Chevy Chase Heights, Pennsylvania Clymer, Pennsylvania Commodore,...

  15. EIS-0505: Final Environmental Impact Statement

    Office of Energy Efficiency and Renewable Energy (EERE)

    EIS-0505: Vantage to Pomona Heights 230 kV Transmission Line Project; Yakima, Grant, Benton, and Kittitas Counties, Washington

  16. Dissipation of turbulence in the wake of a wind turbine

    DOE PAGES [OSTI]

    Lundquist, J. K.; Bariteau, L.

    2014-11-06

    The wake of a wind turbine is characterized by increased turbulence and decreased wind speed. Turbines are generally deployed in large groups in wind farms, and so the behaviour of an individual wake as it merges with other wakes and propagates downwind is critical in assessing wind-farm power production. This evolution depends on the rate of turbulence dissipation in the wind-turbine wake, which has not been previously quantified in field-scale measurements. In situ measurements of winds and turbulence dissipation from the wake region of a multi-MW turbine were collected using a tethered lifting system (TLS) carrying a payload of high-ratemore » turbulence probes. Ambient flow measurements were provided from sonic anemometers on a meteorological tower located near the turbine. Good agreement between the tower measurements and the TLS measurements was established for a case without a wind-turbine wake. When an operating wind turbine is located between the tower and the TLS so that the wake propagates to the TLS, the TLS measures dissipation rates one to two orders of magnitude higher in the wake than outside of the wake. These data, collected between two and three rotor diameters D downwind of the turbine, document the significant enhancement of turbulent kinetic energy dissipation rate within the wind-turbine wake. These wake measurements suggest that it may be useful to pursue modelling approaches that account for enhanced dissipation. Furthermore. comparisons of wake and non-wake dissipation rates to mean wind speed, wind-speed variance, and turbulence intensity are presented to facilitate the inclusion of these measurements in wake modelling schemes.« less

  17. Advanced wind turbine near-term product development. Final technical report

    SciTech Connect

    None

    1996-01-01

    In 1990 the US Department of Energy initiated the Advanced Wind Turbine (AWT) Program to assist the growth of a viable wind energy industry in the US. This program, which has been managed through the National Renewable Energy Laboratory (NREL) in Golden, Colorado, has been divided into three phases: (1) conceptual design studies, (2) near-term product development, and (3) next-generation product development. The goals of the second phase were to bring into production wind turbines which would meet the cost goal of $0.05 kWh at a site with a mean (Rayleigh) windspeed of 5.8 m/s (13 mph) and a vertical wind shear exponent of 0.14. These machines were to allow a US-based industry to compete domestically with other sources of energy and to provide internationally competitive products. Information is given in the report on design values of peak loads and of fatigue spectra and the results of the design process are summarized in a table. Measured response is compared with the results from mathematical modeling using the ADAMS code and is discussed. Detailed information is presented on the estimated costs of maintenance and on spare parts requirements. A failure modes and effects analysis was carried out and resulted in approximately 50 design changes including the identification of ten previously unidentified failure modes. The performance results of both prototypes are examined and adjusted for air density and for correlation between the anemometer site and the turbine location. The anticipated energy production at the reference site specified by NREL is used to calculate the final cost of energy using the formulas indicated in the Statement of Work. The value obtained is $0.0514/kWh in January 1994 dollars. 71 figs., 30 tabs.

  18. Dissipation of turbulence in the wake of a wind turbine

    SciTech Connect

    Lundquist, J. K.; Bariteau, L.

    2014-11-06

    The wake of a wind turbine is characterized by increased turbulence and decreased wind speed. Turbines are generally deployed in large groups in wind farms, and so the behaviour of an individual wake as it merges with other wakes and propagates downwind is critical in assessing wind-farm power production. This evolution depends on the rate of turbulence dissipation in the wind-turbine wake, which has not been previously quantified in field-scale measurements. In situ measurements of winds and turbulence dissipation from the wake region of a multi-MW turbine were collected using a tethered lifting system (TLS) carrying a payload of high-rate turbulence probes. Ambient flow measurements were provided from sonic anemometers on a meteorological tower located near the turbine. Good agreement between the tower measurements and the TLS measurements was established for a case without a wind-turbine wake. When an operating wind turbine is located between the tower and the TLS so that the wake propagates to the TLS, the TLS measures dissipation rates one to two orders of magnitude higher in the wake than outside of the wake. These data, collected between two and three rotor diameters D downwind of the turbine, document the significant enhancement of turbulent kinetic energy dissipation rate within the wind-turbine wake. These wake measurements suggest that it may be useful to pursue modelling approaches that account for enhanced dissipation. Furthermore. comparisons of wake and non-wake dissipation rates to mean wind speed, wind-speed variance, and turbulence intensity are presented to facilitate the inclusion of these measurements in wake modelling schemes.

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

    SciTech Connect

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

    1981-01-01

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

  20. Optimal site selection and sizing of distributed utility-scale wind power plants

    SciTech Connect

    Milligan, M.R.; Artig, R.

    1998-04-01

    As electric market product unbundling occurs, sellers in the wholesale market for electricity will find it to their advantage to be able to specify the quantity of electricity available and the time of availability. Since wind power plants are driven by the stochastic nature of the wind itself, this can present difficulties. To the extent that an accurate wind forecast is available, contract deviations, and therefore penalties, can be significantly reduced. Even though one might have the ability to accurately forecast the availability of wind power, it might not be available during enough of the peak period to provide sufficient value. However, if the wind power plant is developed over geographically disperse locations, the timing and availability of wind power from these multiple sources could provide a better match with the utility`s peak load than a single site. There are several wind plants in various stages of planning or development in the US. Although some of these are small-scale demonstration projects, significant wind capacity has been developed in Minnesota, with additional developments planned in Wyoming and Iowa. As these and other projects are planned and developed, there is a need to perform analysis of the value of geographically diverse sites on the efficiency of the overall wind plant. In this paper, the authors use hourly wind-speed data from six geographically diverse sites to provide some insight into the potential benefits of disperse wind plant development. They provide hourly wind power from each of these sites to an electric reliability simulation model. This model uses generating plant characteristics of the generators within the state of Minnesota to calculate various reliability indices. Since they lack data on wholesale power transactions, they do not include them in the analysis, and they reduce the hourly load data accordingly. The authors present and compare results of their methods and suggest some areas of future research.

  1. Ram-air sample collection device for a chemical warfare agent sensor

    DOEpatents

    Megerle, Clifford A.; Adkins, Douglas R.; Frye-Mason, Gregory C.

    2002-01-01

    In a surface acoustic wave sensor mounted within a body, the sensor having a surface acoustic wave array detector and a micro-fabricated sample preconcentrator exposed on a surface of the body, an apparatus for collecting air for the sensor, comprising a housing operatively arranged to mount atop the body, the housing including a multi-stage channel having an inlet and an outlet, the channel having a first stage having a first height and width proximate the inlet, a second stage having a second lower height and width proximate the micro-fabricated sample preconcentrator, a third stage having a still lower third height and width proximate the surface acoustic wave array detector, and a fourth stage having a fourth height and width proximate the outlet, where the fourth height and width are substantially the same as the first height and width.

  2. America's Home Energy Education Challenge Poster Contest | Department of

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

    Energy America's Home Energy Education Challenge Poster Contest America's Home Energy Education Challenge Poster Contest Addthis Estes Park Middle School 1 of 4 Estes Park Middle School Estes Park Middle School in Estes Park, Colorado received $1,000 as the National Poster Winner for visually demonstrating simple, inexpensive ways to reduce energy usage and save money. Image: Estes Park Middle School Leon Heights Elementary School 2 of 4 Leon Heights Elementary School Leon Heights Elementary

  3. Removing a sheet from the surface of a melt using elasticity and buoyancy

    DOEpatents

    Kellerman, Peter L.; Sun, Dawei; Helenbrook, Brian; Harvey, David S.

    2014-07-01

    Embodiments related to sheet production are disclosed. A melt of a material is cooled to form a sheet of the material on the melt. The sheet is formed in a first region at a first sheet height. The sheet is translated to a second region such that it has a second sheet height higher than the first sheet height. The sheet is then separated from the melt. A seed wafer may be used to form the sheet.

  4. A different approach to solar cell simulation

    SciTech Connect

    Kavasoglu, Nese; Kavasoglu, A. Sertap; Metin, Bengul

    2015-10-15

    Highlights: • A new simulation program has been developed and operated for the Au/n-GaN device. • Device inhomogeneity is introduced to program via fluctuation factor term. • The barrier height fluctuation factor strongly affects the device characteristics. - Abstract: Zero barrier height inhomogeneity in the device is generally assumed to conform to Gaussian distribution in the literature. In this study, zero barrier height inhomogeneity has been adopted to obey random distribution. Cell was divided into elementary diodes, which were connected in parallel to each other. The current–voltage characteristics of the cell were obtained by developed device modeling program for various zero barrier height inhomogeneity levels at room temperature in dark and under light conditions. The cell parameters were then calculated by using simulated current–voltage data. It is displayed that increase in zero barrier height inhomogeneity results in Schottky barrier height enhancement and decrease in the diode factor of the cell. Fill factor and V{sub oc} values showed a decreasing trend with increasing zero barrier height inhomogeneity. Also, random distribution of zero barrier height effect on interface state density was examined. Interface state density increases with increasing zero barrier height inhomogeneity.

  5. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... height (Berg, 1975) at which seepage might begin, through their confining shale layers. ... pressure and the effective permeability to gas in the presence of a wetting phase, ...

  6. Benton County, Arkansas: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Retail Energy, LLC (Texas) Places in Benton County, Arkansas Avoca, Arkansas Bella Vista, Arkansas Bentonville, Arkansas Bethel Heights, Arkansas Cave Springs, Arkansas...

  7. Jared Langevin

    Energy.gov [DOE]

    [[{"type":"media","view_mode":"media_large","fid":"897486","attributes":{"alt":"Langevin_Portrait.jpg","class":"media-image caption","height":"480","typeof":"foaf:Image","width":"480"}}

  8. Integrated Concepts and Research Corporation ICRC | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Concepts and Research Corporation ICRC Jump to: navigation, search Name: Integrated Concepts and Research Corporation (ICRC) Place: Madison Heights, Michigan Zip: 48071 Sector:...

  9. ARM - VAP Product - mmcrmode3ge200408121cloth

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Southern Great Plains SGP C1 Browse...

  10. ARM - VAP Product - mmcrmode3ge200404141cloth

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

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    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Tropical Western Pacific TWP C3...

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Tropical Western Pacific TWP C3...

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Tropical Western Pacific TWP C2...

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

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

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Tropical Western Pacific TWP C2...

  1. ARM - VAP Product - mmcrmode3ge200712011cloth

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations North Slope Alaska NSA C1 Browse...

  2. ARM - VAP Product - mmcrmode1bl200608121cloth

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Tropical Western Pacific TWP C2...

  3. ARM - VAP Product - mmcrmode2ci200404141cloth

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

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    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Tropical Western Pacific TWP C1...

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

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Tropical Western Pacific TWP C3...

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    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Southern Great Plains SGP C1 Browse...

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations North Slope Alaska NSA C1 Browse...

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

    by this product are those considered scientifically relevant. Cloud base height Radar Doppler Radar reflectivity Vertical velocity Locations Tropical Western Pacific TWP C3...

  11. Characterizing Arctic Mixed-phase Cloud Structure

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

    have two distinguished cloud base heights (CBHs) that can be defined by both ceilometer (black dots) and micropulse lidar (MPL; pink dots) measurements (Figure 1). For a...

  12. Array of virtual Frisch-grid CZT detectors with common cathode...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 72 PHYSICS OF ... SHIELDING; SPECTRAL RESPONSE; TESTING Frisch-grid; pulse-height correction; CZT

  13. Search for: All records | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    PBL heights were derived from these merged potential temperature profiles usingmore a modified Heffter (1980) technique that was tailored to the SGP site (Della Monache et al., ...

  14. Clay Electric Cooperative, Inc- Solar Thermal Loans

    Energy.gov [DOE]

    Clay Electric Cooperative (CEC), a Touchstone Energy Cooperative, covers 14 counties in northern Florida, including Gainesville, Keystone Heights, Lake City, Orange Park, Palatka, and Salt Springs....

  15. Length scale selects directionality of droplets on vibrating...

    Office of Scientific and Technical Information (OSTI)

    Here, arrays of tilted pillars ranging in height from the nanoscale to the microscale are used as structural ratchets to directionally transport water at room temperature. Water ...

  16. Assessment of Land Surface Model Performance in WRF for Simulating...

    Office of Scientific and Technical Information (OSTI)

    Assessment of Land Surface Model Performance in WRF for Simulating Wind at Heights Relevant to the Wind Energy Community Citation Details In-Document Search Title: Assessment of ...

  17. Spokane County, Washington: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    in Spokane County, Washington Avista Corp City of Cheney, Washington (Utility Company) Modern Electric Water Company Places in Spokane County, Washington Airway Heights, Washington...

  18. ARM - Datastreams - sodar

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

    Variable Altitude above mean sea level m alt Backscatter, as total intensity of received signal, filtered and range-normalized unitless backscatter ( time, height ) Base time in...

  19. Search for: All records | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Widener, Kevin (6) Lindenmaier, Iosif Andrei (2) Nelson, Dan (2) Save Results Excel ... ARM: X-SAPR Range Height Indicator scan Widener, Kevin ; Nelson, Dan ; Bharadwaj, Nitin ; ...

  20. Polk County, Florida: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Four Corners, Florida Frostproof, Florida Fussels Corner, Florida Gibsonia, Florida Haines City, Florida Highland City, Florida Highland Park, Florida Hillcrest Heights, Florida...

  1. Tax Credits, Rebates & Savings | Department of Energy

    Energy.gov [DOE] (indexed site)

    14 North Florida counties, including Gainesville, Keystone Heights, Lake City, Orange Park, Palatka, and Salt Springs. It... Eligibility: Residential Savings Category: Solar...

  2. Phycal LLC | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Park Place: Highland Heights, Ohio Zip: 44143 Sector: Biofuels, Biomass Product: Agriculture; Raw materialsextraction; Research and development Phone Number: 440-460-2477...

  3. Argonne National Laboratory 9700 South Cass Avenue, Argonne,...

    Office of Legacy Management (LM)

    ... material in contaminated zone soil Emanating power of radon gre Radon vertical dimension of mixing Average annual wind speed Average building air excbange rate Height of ...

  4. ARM - Datastreams - 50rwptempmom

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

    rwptempmom Documentation Data Quality Plots ARM Data Discovery Browse Data Comments? We ... Radar Doppler Spectral width ms; 100*%, see comment specw ( time, height ) Acoustic ...

  5. ARM - VAP Product - pblhtsonde1mcfarl

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

    ( layer ) The maximum difference in potential temperature across inversion layers from Heffter (1980) method. K deltathetamax ( layer ) Height above mean sea level...

  6. Trumbull County, Ohio: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Trumbull County, Ohio Bolindale, Ohio Brookfield Center, Ohio Champion Heights, Ohio Churchill, Ohio Cortland, Ohio Girard, Ohio Hilltop, Ohio Howland Center, Ohio Hubbard, Ohio...

  7. Section 11

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

    that would be expected in the shortwave irradiance increasing altitude, reversible fluids can be used that change as a function of height. Measurements of broadband phase...

  8. University of Missouri | OSTI, US Dept of Energy, Office of Scientific...

    Office of Scientific and Technical Information (OSTI)

    nuclear reactions meet at Mizzou Plasma 'ring' sets the stage for further research Drones take journalism to new heights Biological engineering graduate student Rui Xing ...

  9. Gila County, Arizona: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Day, Arizona Central Heights-Midland City, Arizona Claypool, Arizona Gisela, Arizona Globe, Arizona Hayden, Arizona Miami, Arizona Payson, Arizona Peridot, Arizona Pine, Arizona...

  10. Wind Program News | Department of Energy

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

    to training for the clean energy workforce. December 10, 2014 This map shows wind potential capacity for turbine hub heights at 140 meters. Mapping the Frontier of New...

  11. EA-1753: Finding of No Significant Impact | Department of Energy

    Energy.gov [DOE] (indexed site)

    Beacon Power Corporation Flywheel Frequency Regulation Plant, Chicago Heights, Illinois Based on the analyses in the environmental assessment (EA), DOE determined that its proposed...

  12. Tax Credits, Rebates & Savings | Department of Energy

    Energy.gov [DOE] (indexed site)

    including Gainesville, Keystone Heights, Lake City, Orange Park, Palatka, and Salt Springs. It... Eligibility: Residential Savings Category: Solar Water Heat, Solar Thermal...

  13. Prince George's County, Maryland: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Maryland Camp Springs, Maryland Capitol Heights, Maryland Carmody Hills-Pepper Mill Village, Maryland Cheverly, Maryland Chillum, Maryland Clinton, Maryland College Park,...

  14. ARM - Data Announcements Article

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

    lidar best-estimate VAP for April 3, 2011. Panels (a), (b), and (c) show time-height cross sections of relative humidity, aerosol backscatter coefficient, and aerosol...

  15. Tax Credits, Rebates & Savings | Department of Energy

    Energy.gov [DOE] (indexed site)

    counties, including Gainesville, Keystone Heights, Lake City, Orange Park, Palatka, and Salt Springs. It... Eligibility: Residential Savings Category: Solar Water Heat, Solar...

  16. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... liquid wastes (4) safety analysis (4) seismic effects (4) buckling (3) fasteners (3) ... aging (2) concretes (2) corrections (2) design (2) engineering (2) height (2) Filter by ...

  17. NREL GIS Data: Bhutan High Resolution Wind Resource - Datasets...

    OpenEI (Open Energy Information) [EERE & EIA]

    NREL GIS Data: Bhutan High Resolution Wind Resource This shapefile containing 50 meter height data has been validated by NREL and wind energy meteorological consultants. However,...

  18. EA-1802: Final Environmental Assessment | Department of Energy

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

    and the alternative of not implementing this project (No-Action Alternative). Final Environmental Assessment for Chicago View Wind Project, Chicago Heights, Cook County, ...

  19. First observations of tracking clouds using scanning ARM cloud...

    Office of Scientific and Technical Information (OSTI)

    These measurements complement cloud and precipitation tracking using geostationary satellites and weather radars. Here, two-dimensional (2-D) Along-Wind Range Height Indicator ...

  20. Clermont County, Ohio: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Batavia, Ohio Bethel, Ohio Chilo, Ohio Day Heights, Ohio Felicity, Ohio Loveland, Ohio Milford, Ohio Moscow, Ohio Mount Carmel, Ohio Mount Repose, Ohio Mulberry, Ohio Neville, Ohio...

  1. Barton County, Missouri: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Golden City, Missouri Lamar Heights, Missouri Lamar, Missouri Liberal, Missouri Milford, Missouri Mindenmines, Missouri Retrieved from "http:en.openei.orgw...

  2. MHK Technologies/Brandl Generator | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    direct connected magnets that induce an electrical current when they move through the induction coils. This drawing shows the basic idea. Technology Dimensions Width (m) 10 Height...

  3. Princeton Plasma Physics Lab - Plasma physics

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

    highlighted-imageSami%20Diagnostices12.jpg" width"2304" height"1500" alt"David Thomas and Jakob Brunner" title"Elle StarkmanOffice of Communications" >

    <...

  4. Logan County, West Virginia: Energy Resources | Open Energy Informatio...

    OpenEI (Open Energy Information) [EERE & EIA]

    West Virginia Holden, West Virginia Logan, West Virginia Mallory, West Virginia Man, West Virginia Mitchell Heights, West Virginia Mount Gay-Shamrock, West Virginia...

  5. Hand County, South Dakota: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Climate Zone Number 6 Climate Zone Subtype A. Places in Hand County, South Dakota Miller, South Dakota Northwest Hand, South Dakota Ree Heights, South Dakota St. Lawrence,...

  6. Fergus County, Montana: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Denton, Montana Grass Range, Montana Lewistown Heights, Montana Lewistown, Montana Moore, Montana Winifred, Montana Retrieved from "http:en.openei.orgw...

  7. Johnson County, Iowa: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Iowa Coralville, Iowa Hills, Iowa Iowa City, Iowa Lone Tree, Iowa North Liberty, Iowa Oxford, Iowa Shueyville, Iowa Solon, Iowa Swisher, Iowa Tiffin, Iowa University Heights, Iowa...

  8. Madison County, Indiana: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Indiana Bright Automotive Inc Places in Madison County, Indiana Alexandria, Indiana Anderson, Indiana Chesterfield, Indiana Country Club Heights, Indiana Edgewood, Indiana...

  9. Charlotte County, Florida: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Englewood, Florida Grove City, Florida Harbour Heights, Florida Manasota Key, Florida Port Charlotte, Florida Punta Gorda, Florida Rotonda, Florida Solana, Florida Retrieved from...

  10. Charles County, Maryland: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Bryans Road, Maryland Hughesville, Maryland Indian Head, Maryland La Plata, Maryland Port Tobacco Village, Maryland Potomac Heights, Maryland St. Charles, Maryland Waldorf,...

  11. Sarasota County, Florida: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Lake Sarasota, Florida Laurel, Florida Longboat Key, Florida Nokomis, Florida North Port, Florida North Sarasota, Florida Osprey, Florida Ridge Wood Heights, Florida Sarasota...

  12. Kenton County, Kentucky: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Lakeside Park, Kentucky Ludlow, Kentucky Park Hills, Kentucky Ryland Heights, Kentucky Taylor Mill, Kentucky Villa Hills, Kentucky Walton, Kentucky Retrieved from "http:...

  13. Robotics Methods for Beam Line Instrument Simulation and Control

    SciTech Connect

    James, J. A.; Oliver, E. C.; Paradowska, A; Hubbard, Camden R; Schmidlin, Joshua E; Edwards, L

    2008-01-01

    NOBUGS 2008 Conference, Ansto, Lucas Heights, Australia, http://www.nbi.ansto.gov.au/nobugs2008/papers/paper107.pdf, November 3-5, 2008

  14. 1

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

    on horizontal location (translational invariance), but do depend on height. It is straightforward to produce fields having the correct single point statistics (probability density...

  15. Search for: All records | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Cloud-Scale Vertical Velocity and Turbulent Dissipation Rate Retrievals Shupe, Matthew Time-height fields of retrieved in-cloud vertical wind velocity and turbulent dissipation ...

  16. Princeton Plasma Physics Lab - Fusion roadmapping

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

    height"285" width"400" xmlns:dc"http:purl.orgdcterms" xmlns:media"http:search.yahoo.comsearchmonkeymedia" rel"media:video" resource"https:...

  17. EA-1802: Finding of No Significant Impact | Department of Energy

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

    2: Finding of No Significant Impact EA-1802: Finding of No Significant Impact Chicago View Wind Project Chicago Heights, Cook County, Illinois The Department of Energy's Proposed...

  18. Del Genio-AD

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

    ... upper troposphere; however, simulation of land-ocean differences would necessitate a ... A representation of vertically unresolved lowering of PBL height by subsidence and its ...

  19. Search for: All records | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Micropulse lidar (MPL) can provide much higher temporal resolution than radiosonde and better vertical resolution than infrared spectrometer (AERI), but PBL heights from all three ...

  20. LaPorte County, Indiana: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Kingsbury, Indiana Kingsford Heights, Indiana La Crosse, Indiana La Porte, Indiana Long Beach, Indiana Michiana Shores, Indiana Michigan City, Indiana Pottawattamie Park,...

  1. 1

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

    the entire height of the clouds. Here the cross-correlation functions are found via Fourier methods. Fourier interpolation is used to increase the resolution of peak locations...

  2. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... Our computational analysis of model DOP systems confirms the strong effect of the pillar height and also explains the broadband sensitivity of the implemented SERS substrates. Our ...

  3. Widget:DisplayDialog | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Lightbox |buttonOK |width500 |height600 |classbiglink |stylemargin:0px auto; Hello World ...groovy. Show Content of ID Show Content Click Here for Sibling...

  4. ARM - Article

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

    temporal resolution, improved algorithms for cloud amount and mixing-layer height, and a modular design for easy field servicing. They have been configured to optimize the...

  5. Afghanistan Pakistan High Resolution Wind Resource - Datasets...

    OpenEI (Open Energy Information) [EERE & EIA]

    Pakistan High Resolution Wind Resource This shapefile containing 50 meter height data has been validated by NREL and wind energy meteorological consultants. However, the data is...

  6. Assessment of Land Surface Model Performance in WRF for Simulating...

    Office of Scientific and Technical Information (OSTI)

    Wind Energy Community Citation Details In-Document Search Title: Assessment of Land Surface Model Performance in WRF for Simulating Wind at Heights Relevant to the Wind Energy ...

  7. Tax Credits, Rebates & Savings | Department of Energy

    Energy.gov [DOE] (indexed site)

    covers 14 North Florida counties, including Gainesville, Keystone Heights, Lake City, Orange Park, Palatka, and Salt Springs. It... Eligibility: Residential Savings Category:...

  8. ARM - Data Announcements Article

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

    the sub-sampled potential temperature (black) and potential temperature lapse rate (red) from a single radiosonde along with the estimates of PBL height from the three...

  9. Renewable Energy and Energy Efficiency Partnership Feed | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    src"http:www.reeep.orgsitesdefaultfilesstylesmediumpublicfieldimagePhoto%20solar%20general.jpg?itokdw49h-ND" width"220" height"146" alt"" >

  10. RAPID/Roadmap/13-FD-f | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    facilitate review. The following project-specific information must be included: Solar: Solar tower or panel height; Solar layout; and Solar array acreage (with map)....

  11. 1

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

    pathogens and deliver drugs through the skin," he said. "We extended our current capability in antimicrobial platforms with ionic liquids to new heights by partnering with Dr. ...

  12. MHK Technologies/Triton II | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    almost doubling the incident wave height on the breakwater frontage and high reliability and operational safety Each sea wave converter unit is composed of three main parts...

  13. MHK Projects/Seatricity Orkney | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    e":"ROADMAP","zoom":5,"types":"ROADMAP","SATELLITE","HYBRID","TERRAIN","geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":""...

  14. MHK Projects/Stouts Pass | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    e":"ROADMAP","zoom":5,"types":"ROADMAP","SATELLITE","HYBRID","TERRAIN","geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":""...

  15. MHK Projects/Linwood Bend | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    e":"ROADMAP","zoom":5,"types":"ROADMAP","SATELLITE","HYBRID","TERRAIN","geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":""...

  16. MHK Projects/Tiger Island | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    e":"ROADMAP","zoom":5,"types":"ROADMAP","SATELLITE","HYBRID","TERRAIN","geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":""...

  17. MHK Projects/Matthews Bend | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    e":"ROADMAP","zoom":5,"types":"ROADMAP","SATELLITE","HYBRID","TERRAIN","geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":""...

  18. MHK Projects/Cypress Point | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    e":"ROADMAP","zoom":5,"types":"ROADMAP","SATELLITE","HYBRID","TERRAIN","geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":""...

  19. New Jersey Institute of Technology Center for Building Knowledge...

    OpenEI (Open Energy Information) [EERE & EIA]

    Institute of Technology Center for Building Knowledge Jump to: navigation, search Name: New Jersey Institute of Technology Center for Building Knowledge Place: University Heights...

  20. ARM - Datastreams - ncepgfsflx

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

    relevant. Measurement Variable Surface albedo albedo Precipitation convprecip Soil heat flux groundhflx Cloud fraction higha Planetary boundary layer height hpbl Latent...

  1. ARM - Datastreams - ncepgfsmanflx

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

    relevant. Measurement Variable Surface albedo albedo Precipitation convprecip Soil heat flux groundhflx Cloud fraction higha Planetary boundary layer height hpbl Latent...

  2. ARM - Datastreams - ncepgfsbrwflx

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

    relevant. Measurement Variable Surface albedo albedo Precipitation convprecip Soil heat flux groundhflx Cloud fraction higha Planetary boundary layer height hpbl Latent...

  3. ARM - Datastreams - ncepgfsatkflx

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

    relevant. Measurement Variable Surface albedo albedo Precipitation convprecip Soil heat flux groundhflx Cloud fraction higha Planetary boundary layer height hpbl Latent...

  4. ARM - Datastreams - ncepgfsnauflx

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

    relevant. Measurement Variable Surface albedo albedo Precipitation convprecip Soil heat flux groundhflx Cloud fraction higha Planetary boundary layer height hpbl Latent...

  5. Black Hawk County, Iowa: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Solutions Places in Black Hawk County, Iowa Cedar Falls, Iowa Dunkerton, Iowa Elk Run Heights, Iowa Evansdale, Iowa Gilbertville, Iowa Hudson, Iowa Janesville, Iowa Jesup,...

  6. Davis County, Utah: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Utah Fruit Heights, Utah Kaysville, Utah Layton, Utah North Salt Lake, Utah South Weber, Utah Sunset, Utah Syracuse, Utah West Bountiful, Utah West Point, Utah Woods Cross,...

  7. Stable Boundary Layer Education Field Campaign Summary

    Office of Scientific and Technical Information (OSTI)

    ... (derived from the temperature) and water vapor mixing ratio retrieved from the AERI ... The other panels show time- height cross sections of potential temperature, water vapor ...

  8. The Road to Net Zero (Presentation), NREL (National Renewable...

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

    ... reflective surfaces and low cubicle heights permit the penetration deep into workspaces. NATIONAL RENEWABLE ENERGY LABORATORY 19 Thermal Mass * Incorporates many passive ...

  9. Ray County, Missouri: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Missouri Homestead, Missouri Lawson, Missouri Orrick, Missouri Rayville, Missouri Richmond, Missouri Wood Heights, Missouri Retrieved from "http:en.openei.orgw...

  10. Jasper County, Missouri: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Climate Zone Number 4 Climate Zone Subtype A. Places in Jasper County, Missouri Airport Drive, Missouri Alba, Missouri Asbury, Missouri Avilla, Missouri Brooklyn Heights,...

  11. Microsoft Word - ARESE&.21

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

    ... and (ii) the slope of cloud reflectance versus transmission. ... into a vertical velocity 9 distribution at each height. ... Observatory (BAO) tower measurements (Cess et al., ...

  12. Microsoft Word - WP 12-IS.01-6 R11

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

    ... 81 46.9 External Transmission or Reproduction of ... be in accordance with the tower manufacturer's requirements. ... not be used to increase the working height of a scaffold. ...

  13. Orange County, Florida: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Orlovista, Florida Paradise Heights, Florida Pine Castle, Florida Pine Hills, Florida Sky Lake, Florida South Apopka, Florida Southchase, Florida Taft, Florida Tangelo Park,...

  14. Hamilton County, Ohio: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Ohio Glendale, Ohio Golf Manor, Ohio Grandview, Ohio Greenhills, Ohio Groesbeck, Ohio Harrison, Ohio Kenwood, Ohio Lincoln Heights, Ohio Lockland, Ohio Loveland Park, Ohio...

  15. Cedar County, Missouri: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Climate Zone Number 4 Climate Zone Subtype A. Places in Cedar County, Missouri El Dorado Springs, Missouri Jerico Springs, Missouri Stockton, Missouri Umber View Heights,...

  16. Energy Department Announces Funding for Demonstration and Testing...

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

    industry to demonstrate innovative technologies that produce energy from ocean waves. ... on the characteristics of waves, including their height, period, direction, and steepness. ...

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

    Energy Saver

    Marine and hydrokinetic (MHK) technologies convert the energy of waves, tides, rivers, and ... physical data on ocean waves such as height, period, directionality, and steepness. ...

  18. ARM TR-008

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

    ... Clouds may transmit, scatter or absorb radiant energy that impinges upon them. For a given cloud, the synergy of these processes depends on both cloud macrophysical (cloud height, ...

  19. Union County, New Jersey: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    New Jersey Strategic Energy LLC (New Jersey) Places in Union County, New Jersey Berkeley Heights, New Jersey Clark, New Jersey Cranford, New Jersey Elizabeth, New Jersey...

  20. Kinetic model for an auroral double layer that spans many gravitationa...

    Office of Scientific and Technical Information (OSTI)

    Below this altitude, the ionospheric ions are gravitationally confined and have the expected scale height for quasineutral plasma in gravity. Authors: Robertson, Scott 1 + Show ...

  1. Planetary Boundary Layer from AERI and MPL (Dataset) | Data Explorer

    Office of Scientific and Technical Information (OSTI)

    Because radiative heating and cooling of the surface strongly affect the PBL top height, ... thus improve model parameterizations and our understanding of boundary-layer processes. ...

  2. PowerPoint Presentation

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

    ... Hour Hour Height (km) Comparison of Microbase, Mace and Marchand Products References: Mace, GG, et al. 2006. "Cloud radiative forcing at the ARM Climate Research Facility: Part 1. ...

  3. 1

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

    ... Journal of Atmospheric Science, in press. Clothiaux, EE, TP Ackerman, GG Mace, KP Moran, RT Marchand, M Miller, and BE Martner. 2000. "Objective determination of cloud heights and ...

  4. Solar access of residential rooftops in four California cities...

    Office of Scientific and Technical Information (OSTI)

    of surface height were used to create a digital elevation model of all trees and ... (the flat elements of roofs) was computed geometrically from the digital elevation model. ...

  5. Measurement of Neutron Yields from UF4 (Conference) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Neutrons and gamma rays were separated by a multichannel digital pulse shape discriminator, and the neutron pulse-height spectra were unfolded using sequential least-squares ...

  6. Microsoft Word - STIP 11732.doc

    Office of Scientific and Technical Information (OSTI)

    Not modeled at this time are those perturbations from the more recent pulse height light (PHL) tally feature, although what spectral deviations are seen can be largely attributed ...

  7. Preliminary Benchmarking Efforts and MCNP Simulation Results...

    Office of Scientific and Technical Information (OSTI)

    Not modeled at this time are those perturbations from the more recent pulse height light (PHL) tally feature, although what spectral deviations are seen can be largely attributed ...

  8. Working Group Reports A Short-Wave Radiometer Array Across

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

    ... Figure 7. Mean pitch angles as a function of wave height for three oceanographic buoys. 64 ... According to Fairall (personal communication) the uncertainty in the mean surface energy ...

  9. TurbSim User's Guide: Version 1.50

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

    ... of Abbreviations ART Advanced Research Turbine BLAS Basic ... HH hub height IEC International Electrotechnical ... Journal of the Atmospheric Sciences, Vol. 39, October ...

  10. Example Queries | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Avoca, New York Avoca, Pennsylvania Avoca, Wisconsin Avocado Heights, California Avon Lake, Ohio Avon Park, Florida Avon, Alabama Avon, Colorado Avon, Connecticut Avon,...

  11. EGS Demonstration | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ogle","zoom":14,"width":"600px","height":"350px","centre":false,"layers":,"controls":"pan","zoom","type","scale","streetview","zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoi...

  12. Category:Political Action Committees | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ogle","zoom":14,"width":"600px","height":"350px","centre":false,"layers":,"controls":"pan","zoom","type","scale","streetview","zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoi...

  13. Low Temperature Direct Use Snowmelt Geothermal Facilities | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    e","zoom":false,"width":"600px","height":"350px","centre":false,"layers":,"controls":"pan","zoom","type","scale","streetview","zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoi...

  14. Fracture Characterization Technologies | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    ogle","zoom":14,"width":"600px","height":"350px","centre":false,"layers":,"controls":"pan","zoom","type","scale","streetview","zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoi...

  15. Slide 1

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

    separately for each cloud system (daily) Concept Mather et al (adjacent poster) shows utility of classifying ARM heating rate profiles by cloud height and optical depth. Here...

  16. ARM - Datastreams - ncepgfsdarzprof

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

    NCEPGFSDARZPROF NCEP GFS: vertical profiles of met quantities at standard heights, at Darwin Active Dates 2002.09.01 - 2010.07.26 Measurement Categories Atmospheric State, Cloud...

  17. St. Charles County, Missouri: Energy Resources | Open Energy...

    OpenEI (Open Energy Information) [EERE & EIA]

    Missouri O'Fallon, Missouri Portage Des Sioux, Missouri St. Charles, Missouri St. Paul, Missouri St. Peters, Missouri Weldon Spring Heights, Missouri Weldon Spring, Missouri...

  18. 3010DLFinal.doc

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

    Instrument Preparation Set from "DP" to "Normal" mode. Check gun and column IGP ... Carry out alignments Find beam Eucentric height Gun alignment C2 aperture, ...

  19. X:\\ARM_19~1\\PGS29-47.WPD

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

    Clouds are one of the most important moderators of the earth radiation budget and one of ... tions including cloud base height determination and cloud-type occurrence statistics. ...

  20. Section 36

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

    ... Cloud climatology statistics such as this will be very important for studying cloud cover ... lidar measurement instrument for determining the correct cloud height statistics. alone. ...

  1. Autonomous Combustion-Powered Hopping Robot - Energy Innovation...

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

    a groundbreaking, energy efficient capability. Hopping mobility has been shown to be five times more efficient than hovering when traversing obstacles at heights under 10...

  2. Clay Electric Cooperative, Inc- Energy Conservation Loans

    Office of Energy Efficiency and Renewable Energy (EERE)

    Clay Electric Cooperative (CEC), a Touchstone Energy Cooperative, covers 14 North Florida counties, including Gainesville, Keystone Heights, Lake City, Orange Park, Palatka, and Salt Springs. It...

  3. Neutronics Design and Fuel Cycle Analysis of a High Conversion...

    Office of Scientific and Technical Information (OSTI)

    ... core height and improve neutron economy without the risk of a positive void coefficient. ... been well assessed and benchmarked for analysis of light water reactor systems. ...

  4. University holiday, offices closed | The Ames Laboratory

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

    Offshore Wind Speed at 90 m 10-JAN-2011 1.1.1 Wind Speed at 90 m m/s 11.5 - 12.0 11.0 - 11.5 10.5 - 11.0 10.0 - 10.5 9.5 - 10.0 9.0 - 9.5 8.5 - 9.0 8.0 - 8.5 7.5 - 8.0 7.0 - 7.5 6.5 - 7.0 6.0 - 6.5 0.0 - 6.0 mph 25.7 - 26.8 24.6 - 25.7 23.5 - 24.6 22.4 - 23.5 21.3 - 22.4 20.1 - 21.3 19.0 - 20.1 17.9 - 19.0 16.8 - 17.9 15.7 - 16.8 14.5 - 15.7 13.4 - 14.5 0.0 - 13.4

    University holiday, offices closed Event Type: Holiday Date: 11/24/2016 (All day)

  5. United States Offshore Wind Resource Map at 90 Meters

    WindExchange

    Offshore Wind Speed at 90 m 10-JAN-2011 1.1.1 Wind Speed at 90 m m/s 11.5 - 12.0 11.0 - 11.5 10.5 - 11.0 10.0 - 10.5 9.5 - 10.0 9.0 - 9.5 8.5 - 9.0 8.0 - 8.5 7.5 - 8.0 7.0 - 7.5 6.5 - 7.0 6.0 - 6.5 0.0 - 6.0 mph 25.7 - 26.8 24.6 - 25.7 23.5 - 24.6 22.4 - 23.5 21.3 - 22.4 20.1 - 21.3 19.0 - 20.1 17.9 - 19.0 16.8 - 17.9 15.7 - 16.8 14.5 - 15.7 13.4 - 14.5 0.0 - 13.4

  6. NWTC Dynamometer Specifications

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

    (45') max hook height -45,00 kg (50 ton) overhead crane -9.14 m (30 ft) maximum hook height -13,605 kg (15 ton) overhead crane Test Article Grid Connection -13.2 kVAC, 60 Hz. ...

  7. CX-005793: Categorical Exclusion Determination

    Energy.gov [DOE]

    Illinois-City-Arlington Heights, Village ofCX(s) Applied: A1, A9, A11, B2.5, B5.1Date: 05/02/2011Location(s): Arlington Heights, IllinoisOffice(s): Energy Efficiency and Renewable Energy

  8. IMPULSIVE ACCELERATION OF CORONAL MASS EJECTIONS. I. STATISTICS AND CORONAL MASS EJECTION SOURCE REGION CHARACTERISTICS

    SciTech Connect

    Bein, B. M.; Berkebile-Stoiser, S.; Veronig, A. M.; Temmer, M.; Muhr, N.; Kienreich, I.; Utz, D.

    2011-09-10

    We use high time cadence images acquired by the STEREO EUVI and COR instruments to study the evolution of coronal mass ejections (CMEs) from their initiation through impulsive acceleration to the propagation phase. For a set of 95 CMEs we derived detailed height, velocity, and acceleration profiles and statistically analyzed characteristic CME parameters: peak acceleration, peak velocity, acceleration duration, initiation height, height at peak velocity, height at peak acceleration, and size of the CME source region. The CME peak accelerations we derived range from 20 to 6800 m s{sup -2} and are inversely correlated with the acceleration duration and the height at peak acceleration. Seventy-four percent of the events reach their peak acceleration at heights below 0.5 R{sub sun}. CMEs that originate from compact sources low in the corona are more impulsive and reach higher peak accelerations at smaller heights. These findings can be explained by the Lorentz force, which drives the CME accelerations and decreases with height and CME size.

  9. Ultrasonic testing device having an adjustable water column

    DOEpatents

    Roach, Dennis P.; Neidigk, Stephen O.; Rackow, Kirk A.; Duvall, Randy L.

    2015-09-01

    An ultrasonic testing device having a variable fluid column height is disclosed. An operator is able to adjust the fluid column height in real time during an inspection to to produce optimum ultrasonic focus and separate extraneous, unwanted UT signals from those stemming from the area of interest.

  10. CX-000156: Categorical Exclusion Determination

    Energy.gov [DOE]

    Huber Heights' Replacement of High-Pressure Sodium Outdoor Fixtures With Efficient Compact Fluorescent FixturesCX(s) Applied: B2.5, B5.1, B1.3Date: 01/14/2010Location(s): Huber Heights, OhioOffice(s): Energy Efficiency and Renewable Energy

  11. Amplitude sorting of oscillatory burst signals by sampling

    DOEpatents

    Davis, Thomas J.

    1977-01-01

    A method and apparatus for amplitude sorting of oscillatory burst signals is described in which the burst signal is detected to produce a burst envelope signal and an intermediate or midportion of such envelope signal is sampled to provide a sample pulse output. The height of the sample pulse is proportional to the amplitude of the envelope signal and to the maximum burst signal amplitude. The sample pulses are fed to a pulse height analyzer for sorting. The present invention is used in an acoustic emission testing system to convert the amplitude of the acoustic emission burst signals into sample pulse heights which are measured by a pulse height analyzer for sorting the pulses in groups according to their height in order to identify the material anomalies in the test material which emit the acoustic signals.

  12. Effect of temperature on the current (capacitance and conductance)voltage characteristics of Ti/n-GaAs diode

    SciTech Connect

    Ejderha, K.; Duman, S. Urhan, F.; Nuhoglu, C.; Turut, A.

    2014-12-21

    In this study, Ti/n-GaAs Schottky barrier diode has been fabricated by DC magnetron sputtering. The currentvoltage, capacitancevoltage, and conductancevoltage characteristics of Ti/nGaAs diode have been investigated in the temperature range of 80320?K. The ideality factor and barrier height values have been calculated from the forward currentvoltage characteristics. The variation of the diode parameters with the sample temperature has been attributed to the presence of the lateral inhomogeneities of the barrier height. The temperature dependent capacitancevoltage characteristics have been measured to calculate the carrier concentration, diffusion potential, barrier height, and temperature coefficient of the barrier height (??=??0.65?meV K{sup ?1}). The fact that the temperature coefficient of the barrier height changes from metal to metal has been ascribed to the chemical nature of the contact metal or metal electronegativity.

  13. Large-eddy simulations of surface roughness parameter sensitivity to canopy-structure characteristics

    DOE PAGES [OSTI]

    Maurer, K. D.; Bohrer, G.; Kenny, W. T.; Ivanov, V. Y.

    2015-04-30

    Surface roughness parameters, namely the roughness length and displacement height, are an integral input used to model surface fluxes. However, most models assume these parameters to be a fixed property of plant functional type and disregard the governing structural heterogeneity and dynamics. In this study, we use large-eddy simulations to explore, in silico, the effects of canopy-structure characteristics on surface roughness parameters. We performed a virtual experiment to test the sensitivity of resolved surface roughness to four axes of canopy structure: (1) leaf area index, (2) the vertical profile of leaf density, (3) canopy height, and (4) canopy gap fraction.more » We found roughness parameters to be highly variable, but uncovered positive relationships between displacement height and maximum canopy height, aerodynamic canopy height and maximum canopy height and leaf area index, and eddy-penetration depth and gap fraction. We also found negative relationships between aerodynamic canopy height and gap fraction, as well as between eddy-penetration depth and maximum canopy height and leaf area index. We generalized our model results into a virtual "biometric" parameterization that relates roughness length and displacement height to canopy height, leaf area index, and gap fraction. Using a decade of wind and canopy-structure observations in a site in Michigan, we tested the effectiveness of our model-driven biometric parameterization approach in predicting the friction velocity over heterogeneous and disturbed canopies. We compared the accuracy of these predictions with the friction-velocity predictions obtained from the common simple approximation related to canopy height, the values calculated with large-eddy simulations of the explicit canopy structure as measured by airborne and ground-based lidar, two other parameterization approaches that utilize varying canopy-structure inputs, and the annual and decadal means of the surface roughness parameters at

  14. Precision manometer gauge

    DOEpatents

    McPherson, Malcolm J. (Lafayette, CA); Bellman, Robert A. (Berkeley, CA)

    1984-01-01

    A precision manometer gauge which locates a zero height and a measured height of liquid using an open tube in communication with a reservoir adapted to receive the pressure to be measured. The open tube has a reference section carried on a positioning plate which is moved vertically with machine tool precision. Double scales are provided to read the height of the positioning plate accurately, the reference section being inclined for accurate meniscus adjustment, and means being provided to accurately locate a zero or reference position.

  15. Changing the Way We Fly: Renewable Jet Fuels Made from Waste Gases Reaching

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

    New Heights with Airline Industry | Department of Energy Changing the Way We Fly: Renewable Jet Fuels Made from Waste Gases Reaching New Heights with Airline Industry Changing the Way We Fly: Renewable Jet Fuels Made from Waste Gases Reaching New Heights with Airline Industry August 11, 2016 - 10:45am Addthis In June 2015, United Airlines announced a partnership with biofuel company Fulcrum BioEnergy to invest in future commercial-scale aviation biofuel plants. The company’s innovative

  16. SEASAT altimeter determination of ocean current variability

    SciTech Connect

    Bernstein, R.L.; Born, G.H.; Whritner, R.H.

    1982-04-30

    Radar altimeters of great precision (roughly-equal10 cm), such as the one that flew on the SEASAT satellite, are capable of measuring the small oceanic height variations associated with geostrophic ocean currents. An experiment was concluded in the Kuroshio Current east of Japan, verifying this capability. Air-expendable bathythermographs (AXBT's) were dropped to coincide with the SEASAT subtract during flights on September 25 and October 5 and 13, 1978. Changes in surface dynamic height between flights were inferred from the AXBT data. They agreed generally to within +- 10 cm of height changes observed in the altimeter data.

  17. New Meteorlogical Data for Ventsar XL

    SciTech Connect

    T. Foley; Jannik, T.

    2010-06-13

    Every five years Savannah River National Laboratory (SRNL) generates an updated meteorological database to facilitate dosimetric calculations of accident and routine release scenarios for onsite and offsite populations. This information becomes the input of various environmental dosimetry codes run by the Environmental Dosimetry Group (EDG) at SRNL. The three most recent databases prior to the current one were completed for the time periods 1987-1991, 1992-1996, and 1997-2001. The current database covers the period 2002-2006. This study represents a portion of a larger study to compare the meteorological data among these four five-year periods and focuses on updating VENTSAR XL{copyright} for the current meteorological database. The updated meteorological data are also applied in other dosimetry models approved for risk and dose assessment at Savannah River Site (SRS). VENTSAR XL{copyright} is a Gaussian Plume model that includes building effects and plume rise. The typical input involves the location of the release, building dimensions, distance to the building, release height, vent diameter, vent gas temperature, gas molecular weight, ambient air temperature, breathing rate, meteorological conditions, radionuclides and their amount released. The output is easily converted into tables and graphs for further analysis and shows the concentrations and pathway doses for each of the incremental downwind distances. VENTSAR XL{copyright} has been used at SRS to investigate building effects such as reactor cooling towers in support of safety analyses. VENTSAR XL{copyright} has also been applied to Good Engineering Practice (GEP) stack height evaluations for various projects at SRS. In accordance with the Clean Air Act Amendments of 1977, GEP must be used in determining the height of any stack that will be used to disperse routine emissions. With respect to stack heights, the GEP height is 'the height necessary to ensure that emissions from the stack do not result in

  18. Microsoft Word - Cover Page - Exhibit 5

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

    5 Northern Pass Project Chart of Proposed Structure Heights 1 3 3 6 21 29 40 22 20 12 18 10 14 14 29 26 26 14 7 4 0 1 0 0 0 3 29 66 148 244 291 190 121 57 45 24 17 7 6 1 0 0 0 0 0 50 100 150 200 250 300 350 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 Structure Quantity Structure Height EXHIBIT 5 Project Structure Height Breakdown - HVDC & 345-kV HVDC Structures 345-kV Structures 27-JUN-2013

  19. Precision manometer gauge

    DOEpatents

    McPherson, M.J.; Bellman, R.A.

    1982-09-27

    A precision manometer gauge which locates a zero height and a measured height of liquid using an open tube in communication with a reservoir adapted to receive the pressure to be measured. The open tube has a reference section carried on a positioning plate which is moved vertically with machine tool precision. Double scales are provided to read the height of the positioning plate accurately, the reference section being inclined for accurate meniscus adjustment, and means being provided to accurately locate a zero or reference position.

  20. Method of determining forest production from remotely sensed forest parameters

    DOEpatents

    Corey, J.C.; Mackey, H.E. Jr.

    1987-08-31

    A method of determining forest production entirely from remotely sensed data in which remotely sensed multispectral scanner (MSS) data on forest 5 composition is combined with remotely sensed radar imaging data on forest stand biophysical parameters to provide a measure of forest production. A high correlation has been found to exist between the remotely sensed radar imaging data and on site measurements of biophysical 10 parameters such as stand height, diameter at breast height, total tree height, mean area per tree, and timber stand volume.

  1. Crosslinked polymer gel electrolytes based on polyethylene glycol methacrylate and ionic liquid for lithium battery applications

    SciTech Connect

    Liao, Chen; Sun, Xiao-Guang; Dai, Sheng

    2013-01-01

    Gel polymer electrolytes were synthesized by copolymerization polyethylene glycol methyl ether methacrylate with polyethylene glycol dimethacrylate in the presence of a room temperature ionic liquid, methylpropylpyrrolidinium bis(trifluoromethanesulfonyl)imide (MPPY TFSI). The physical properties of gel polymer electrolytes were characterized by thermal analysis, impedance spectroscopy, and electrochemical tests. The ionic conductivities of the gel polymer electrolytes increased linearly with the amount of MPPY TFSI and were mainly attributed to the increased ion mobility as evidenced by the decreased glass transition temperatures. Li||LiFePO4 cells were assembled using the gel polymer electrolytes containing 80 wt% MPPY TFSI via an in situ polymerization method. A reversible cell capacity of 90 mAh g 1 was maintained under the current density of C/10 at room temperature, which was increased to 130 mAh g 1 by using a thinner membrane and cycling at 50 C.

  2. Laser ion source with solenoid field

    DOE PAGES [OSTI]

    Kanesue, Takeshi; Fuwa, Yasuhiro; Kondo, Kotaro; Okamura, Masahiro

    2014-11-12

    Pulse length extension of highly charged ion beam generated from a laser ion source is experimentally demonstrated. In this study, the laser ion source (LIS) has been recognized as one of the most powerful heavy ion source. However, it was difficult to provide long pulse beams. By applying a solenoid field (90 mT, 1 m) at plasma drifting section, a pulse length of carbon ion beam reached 3.2 μs which was 4.4 times longer than the width from a conventional LIS. The particle number of carbon ions accelerated by a radio frequency quadrupole linear accelerator was 1.2 × 1011, whichmore » was provided by a single 1 J Nd-YAG laser shot. A laser ion source with solenoid field could be used in a next generation heavy ion accelerator.« less

  3. Enabling cost-effective high-current burst-mode operation in superconducting accelerators

    SciTech Connect

    Sheffield, Richard L.

    2015-06-01

    Superconducting (SC) accelerators are very efficient for CW or long-pulse operation, and normal conducting (NC) accelerators are cost effective for short-pulse operation. The addition of a short NC linac section to a SC linac can correct for the energy droop that occurs when pulsed high-current operation is required that exceeds the capability of the klystrons to replenish the cavity RF fields due to the long field fill-times of SC structures, or a requirement to support a broad range of beam currents results in variable beam loading. This paper describes the implementation of this technique to enable microseconds of high beam-current, 90 mA or more, in a 12 GeV SC long-pulse accelerator designed for the MaRIE 42-keV XFEL proposed for Los Alamos National Laboratory.

  4. Laser ion source with solenoid field

    SciTech Connect

    Kanesue, Takeshi Okamura, Masahiro; Fuwa, Yasuhiro; Kondo, Kotaro

    2014-11-10

    Pulse length extension of highly charged ion beam generated from a laser ion source is experimentally demonstrated. The laser ion source (LIS) has been recognized as one of the most powerful heavy ion source. However, it was difficult to provide long pulse beams. By applying a solenoid field (90?mT, 1?m) at plasma drifting section, a pulse length of carbon ion beam reached 3.2??s which was 4.4 times longer than the width from a conventional LIS. The particle number of carbon ions accelerated by a radio frequency quadrupole linear accelerator was 1.2??10{sup 11}, which was provided by a single 1?J Nd-YAG laser shot. A laser ion source with solenoid field could be used in a next generation heavy ion accelerator.

  5. Laser ion source with solenoid field

    SciTech Connect

    Kanesue, Takeshi; Fuwa, Yasuhiro; Kondo, Kotaro; Okamura, Masahiro

    2014-11-12

    Pulse length extension of highly charged ion beam generated from a laser ion source is experimentally demonstrated. In this study, the laser ion source (LIS) has been recognized as one of the most powerful heavy ion source. However, it was difficult to provide long pulse beams. By applying a solenoid field (90 mT, 1 m) at plasma drifting section, a pulse length of carbon ion beam reached 3.2 ?s which was 4.4 times longer than the width from a conventional LIS. The particle number of carbon ions accelerated by a radio frequency quadrupole linear accelerator was 1.2 1011, which was provided by a single 1 J Nd-YAG laser shot. A laser ion source with solenoid field could be used in a next generation heavy ion accelerator.

  6. Enabling cost-effective high-current burst-mode operation in superconducting accelerators

    DOE PAGES [OSTI]

    Sheffield, Richard L.

    2015-06-01

    Superconducting (SC) accelerators are very efficient for CW or long-pulse operation, and normal conducting (NC) accelerators are cost effective for short-pulse operation. The addition of a short NC linac section to a SC linac can correct for the energy droop that occurs when pulsed high-current operation is required that exceeds the capability of the klystrons to replenish the cavity RF fields due to the long field fill-times of SC structures, or a requirement to support a broad range of beam currents results in variable beam loading. This paper describes the implementation of this technique to enable microseconds of high beam-current,more » 90 mA or more, in a 12 GeV SC long-pulse accelerator designed for the MaRIE 42-keV XFEL proposed for Los Alamos National Laboratory.« less

  7. Nitrogen doping study in ingot niobium cavities

    SciTech Connect

    Dhakal, Pashupati; Ciovati, Gianluigi; Kneisel, Peter; Myneni, Ganapati Rao; Makita, Junki

    2015-09-01

    Thermal diffusion of nitrogen in niobium superconducting radio frequency cavities at temperature ~800 °C has resulted in the increase in quality factor with a low-field Q-rise extending to Bp > 90 mT. However, the maximum accelerating gradient of these doped cavities often deteriorates below the values achieved by standard treatments prior to doping. Here, we present the results of the measurements on ingot niobium cavities doped with nitrogen at 800 °C. The rf measurements were carried out after the successive electropolishing to remove small amount of material from the inner surface layer. The result showed higher breakdown field with lower quality factor as material removal increases.

  8. Computational analysis of kidney scintigrams

    SciTech Connect

    Vrincianu, D.; Puscasu, E.; Creanga, D.; Stefanescu, C.

    2013-11-13

    The scintigraphic investigation of normal and pathological kidneys was carried out using specialized gamma-camera device from nuclear medicine hospital department. Technetium 90m isotope with gamma radiation emission, coupled with vector molecules for kidney tissues was introduced into the subject body, its dynamics being recorded as data source for kidney clearance capacity. Two representative data series were investigated, corresponding to healthy and pathological organs respectively. The semi-quantitative tests applied for the comparison of the two distinct medical situations were: the shape of probability distribution histogram, the power spectrum, the auto-correlation function and the Lyapunov exponent. While power spectrum led to similar results in both cases, significant differences were revealed by means of distribution probability, Lyapunov exponent and correlation time, recommending these numerical tests as possible complementary tools in clinical diagnosis.

  9. Laser ion source with solenoid field

    SciTech Connect

    Kanesue, Takeshi; Fuwa, Yasuhiro; Kondo, Kotaro; Okamura, Masahiro

    2014-11-10

    Pulse length extension of highly charged ion beam generated from a laser ion source is experimentally demonstrated. The laser ion source (LIS) has been recognized as one of the most powerful heavy ion source. However, it was difficult to provide long pulse beams. By applying a solenoid field (90 mT, 1 m) at plasma drifting section, a pulse length of carbon ion beam reached 3.2 ?s which was 4.4 times longer than the width from a conventional LIS. The particle number of carbon ions accelerated by a radio frequency quadrupole linear accelerator was 1.2 1011, which was provided by a single 1 J Nd-YAG laser shot. A laser ion source with solenoid field could be used in a next generation heavy ion accelerator.

  10. The materials test station: a fast spectrum irradiation facility

    SciTech Connect

    Pitcher, Eric J.

    2007-07-01

    The Materials Test Station is a fast-neutron spectrum irradiation facility under design at the Los Alamos National Laboratory in support of the United States Department of Energy's Global Nuclear Energy Partnership. The facility will be capable of rodlets-scale irradiations of candidate fuel forms being developed to power the next generation of fast reactors. Driven by a powerful proton beam, the fuel irradiation region exhibits a neutron spectrum similar to that seen in a fast reactor, with a peak neutron flux of 1.6 x 10{sup 15} n.cm{sup -2}.s{sup -1}. Site preparation and construction are estimated to take four years, with a cost range of $60 M to $90 M. (author)

  11. Complexation of Am(III) by oxalate in NaClO{sub 4} media

    SciTech Connect

    Choppin, G.R.; Chen, J.F.

    1995-09-01

    The complexation of Am(III) by oxalate has been investigated in solutions of NaClO{sub 4} up to 9.0 M ionic strength at 25{degrees}C. The dissociation constants of oxalic acid were determined by potentiometric titration, while the stability constants of the Am(III)-oxalate complexation were measured by the solvent extraction technique. A thermodynamic model was constructed to predict the apparent equilibrium constants at different ionic strengths by applying the Pitzer equation using parameters for the Na{sup +}-HOx{sup -}, Na{sup +}-Ox{sup -}, AmOx{sup +}-ClO{sub 4}{sup -}, and Na{sup +}-Am(Ox){sub 2}{sup -} interactions obtained by fitting the data.

  12. Higgs Searches

    SciTech Connect

    Peters, Krisztian

    2009-11-01

    We present the status and prospects of Higgs searches at the Tevatron and the LHC. Results from the Tevatron are using up to 5 fb{sup -} of data collected with the CDF and D0 detectors. The major contributing processes include associated production (WH {yields} l{nu}bb, ZH {yields} {nu}{nu}bb, ZH {yields} llbb) and gluon fusion (gg {yields} H {yields} WW{sup (*)}). Improvements across the full mass range resulting from the larger data sets, improved analyses techniques and increased signal acceptance are discussed. Recent results exclude the SM Higgs boson in a mass range of 160 < m{sub H} < 170 GeV. Searches for the neutral MSSM Higgs boson in the region 90 < m{sub A} < 200 GeV exclude tan {beta} values down to 30 for several benchmark scenarios.

  13. Offshore Wind Potential Tables

    WindExchange

    Offshore wind resource by state and wind speed interval within 50 nm of shore. Wind Speed at 90 m (m/s) 7.0 - 7.5 7.5 - 8.0 8.0 - 8.5 8.5 - 9.0 9.0 - 9.5 9.5 - 10.0 >10.0 Total >7.0 State Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) Area km 2 (MW) California 11,439 (57,195) 24,864 (124,318) 23,059 (115,296) 22,852 (114,258) 13,185 (65,924) 15,231 (76,153) 6,926 (34,629) 117,555 (587,773) Connecticut 530 (2,652) 702 (3,508) 40

  14. Data Driven Approach for High Resolution Population Distribution and Dynamics Models

    SciTech Connect

    Bhaduri, Budhendra L; Bright, Eddie A; Rose, Amy N; Liu, Cheng; Urban, Marie L; Stewart, Robert N

    2014-01-01

    High resolution population distribution data are vital for successfully addressing critical issues ranging from energy and socio-environmental research to public health to human security. Commonly available population data from Census is constrained both in space and time and does not capture population dynamics as functions of space and time. This imposes a significant limitation on the fidelity of event-based simulation models with sensitive space-time resolution. This paper describes ongoing development of high-resolution population distribution and dynamics models, at Oak Ridge National Laboratory, through spatial data integration and modeling with behavioral or activity-based mobility datasets for representing temporal dynamics of population. The model is resolved at 1 km resolution globally and describes the U.S. population for nighttime and daytime at 90m. Integration of such population data provides the opportunity to develop simulations and applications in critical infrastructure management from local to global scales.

  15. RECONSTRUCTING PALEO-SMT POSITIONS ON THE CASCADIA MARGIN USING MAGNETIC SUSCEPTIBILITY

    SciTech Connect

    Johnson, Joel; Phillips, Stephen

    2014-09-30

    Magnetic susceptibility (κ) is a mixed signal in marine sediments, representing primary depositional and secondary diagenetic processes. Production of hydrogen sulfide via anaerobic oxidation of methane (AOM) at the sulfate-methane transition (SMT) and organoclastic sulfate reduction above the SMT can result in the dissolution of iron oxides, altering κ in sediments in methane gas and gas hydrate bearing regions. We investigated records of κ on the Cascadia margin (ODP Sites 1249 and 1252; IODP Site 1325) using a Zr/Rb heavy mineral proxy from XRF core scanning to identify intervals of primary detrital magnetic susceptibility and intervals and predict intervals affected by magnetite dissolutions. We also measured total sulfur content, grain size distributions, total organic carbon (TOC) content, and magnetic mineral assemblage. The upper 100 m of Site 1252 contains a short interval of κ driven by primary magnetite, with multiple intervals (> 90 m total) of decreased κ correlated with elevated sulfur content, consistent with dissolution of magnetite and re-precipitation of pyrite. In the upper 90 m of Site 1249, κ is almost entirely altered by diagenetic processes, with much of the low κ explained by a high degree of pyritization, and some intervals affected by the precipitation of magnetic iron sulfides. At Site 1325, κ between 0-20 and 51-73 mbsf represents primary mineralogy, and in the interval 24-51 mbsf, κ may be reduced due to pyritization. This integrated approach allows for a prediction of primary κ and the amount of κ loss at each site when compared to actual κ measurements. In the case of magnetite dissolution and full pyritization, these drawdowns in κ are supported by sulfur measurements, and the exposure times of magnetite to hydrogen sulfide can be modeled. The presence of methane and methane hydrates at these sites, as well as large variations in TOC content, suggest that the past migration rates of the SMT and variation in sulfate

  16. POWER Templates

    Energy.gov [DOE] (indexed site)

    ... maximum structure deflection will be assumed at 1% of the structure above ground height. ... and a distance between the 2 OPGWs of about 14 m45 ft, and assuming the average ruling ...

  17. CX-004498: Categorical Exclusion Determination

    Energy.gov [DOE]

    Energy and Daylighting Demonstration & Assessment of Sunlight Responsive Thermochromic Window SystemsCX(s) Applied: A9Date: 11/19/2010Location(s): Arlington Heights, IllinoisOffice(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory

  18. How Well Are Shallow Convective Clouds Simulated in the CAM5...

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

    heights were estimated from two different methods: red (Heffter 1980) and black and green (Richardson number approach using critical thresholds of 0.5 and 0.25 respectively)....

  19. Radiative Effects of Cloud Inhomogeneity and

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

    ... Note that the peak concentration of cloud water is independent of the cloud base height, ... The upper panel is for the SGP data, and the lower panel is for the CRM data (see text for ...

  20. Jason Walsh

    Energy.gov [DOE]

    [[{"type":"media","view_mode":"media_large","fid":"752684","attributes":{"alt":"Photo of Jason Walsh.","class":"media-image caption","style":"width: 161px; height: 201px; float: right;","typeof":...

  1. NREL: Wind Research - Site Tours

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

    Site Tours Get the Adobe Flash Player to see this video. This is a simulated tour of the ... This video shows the proper heights of turbines and meteorological towers. The buildings ...

  2. Operating Experience Level 3, Dangers of Objects Falling into...

    Energy Saver

    3 (OE-3) document provides information about a safety concern related to the dangers of items falling from heights into spaces normally occupied by workers at Department of Energy...

  3. 1

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

    ... Time-height color contours of temperature, WV density, and LWC are presented in Figure 2 for January 13 - 17, 2001, at Barrow, Alaska. Except for the power outage, the data ...

  4. Pneumatic Conveyance Device - Energy Innovation Portal

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

    Height: 70 feet plus 1 inch diameter nozzle connected to 100 ft. of 2 inch diameter PVC hose - dust collector and barrel Nozzle annulus air supply and flow rate: 50 SCFM at 80...

  5. Index of public plots and other data representations

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

    the purity monitor appear here from the Phase I operation of the MicroBooNE cryogenics system. The electron drift lifetime can be determined from taking the ratio of the heights...

  6. small buisness

    National Nuclear Security Administration (NNSA)

    DOE prime contractors.
    height351 title"From left: CNS Supply Chain Management Director Skip Skelton, Y 12 Small Business Program Manager Lisa Copeland, Y 12...

  7. Microsoft PowerPoint - arm2008_1.ppt

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

    TEMPLATE DESIGN © 2007 www.PosterPresentations.com 20 25 30 35 40 45 Fractional day 0 100 200 300 400 OLR (W/m 2 ) SCAM_std SCAM_ice OBS 20 25 30 35 40 45 Fractional day 380 400 420 440 460 surface LW DN flux(W/m 2 ) OBS SCAM_ice SCAM_std 0 5 10 15 20 Height (km) 0.1 1.0 3.0 4.0 6.0 8.0 14.0 20.0 30.0 40.0 60.0 (10 -3 g/m 3 ) SCAM_std 0 5 10 15 20 Height (km) SCAM_ice 0 5 10 15 20 Height (km) Radar 20 25 30 35 40 45 Fractional day 0 5 10 15 20 Height (km) Satellite Evaluating cloud

  8. TITLE

    Office of Legacy Management (LM)

    ... materialb In mutamhated r m e soilb Emanating power ot &-22zb Radon vertical dimension oh rnhim Average annual wind speedb Average building air e d m q e rateb Height of ...

  9. Doppler Lidar Vertical Velocity Statistics Value-Added Product

    SciTech Connect

    Newsom, R. K.; Sivaraman, C.; Shippert, T. R.; Riihimaki, L. D.

    2015-07-01

    Accurate height-resolved measurements of higher-order statistical moments of vertical velocity fluctuations are crucial for improved understanding of turbulent mixing and diffusion, convective initiation, and cloud life cycles. The Atmospheric Radiation Measurement (ARM) Climate Research Facility operates coherent Doppler lidar systems at several sites around the globe. These instruments provide measurements of clear-air vertical velocity profiles in the lower troposphere with a nominal temporal resolution of 1 sec and height resolution of 30 m. The purpose of the Doppler lidar vertical velocity statistics (DLWSTATS) value-added product (VAP) is to produce height- and time-resolved estimates of vertical velocity variance, skewness, and kurtosis from these raw measurements. The VAP also produces estimates of cloud properties, including cloud-base height (CBH), cloud frequency, cloud-base vertical velocity, and cloud-base updraft fraction.

  10. Title

    National Nuclear Security Administration (NNSA)

    These regions included the ground zeros of above-ground nuclear tests, underground tests that vented, and some safety ... including an amplifier and power supply, a pulse-height ...

  11. Upcoming Funding Opportunity for Tower Manufacturing and Installation

    Energy.gov [DOE]

    The DOE Wind Program has issued a Notice of Intent for a funding opportunity, tentatively titled U.S. Wind Manufacturing: Taller Hub Heights to Access Higher Wind Resources, and Lower Cost of Energy.

  12. President Obama Names Scientists Mildred Dresselhaus and Burton...

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

    She was a Fulbright Fellow at Newnham College at the University of Cambridge from 1951 to 1952. Born and raised in New York City at the height of the Depression, she was inspired ...

  13. Mildred S. Dresselhaus, 2010 | U.S. DOE Office of Science (SC...

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

    She was a Fulbright Fellow at Newnham College at the University of Cambridge from 1951 to 1952. Born and raised in New York City at the height of the Depression, she was inspired ...

  14. Tax Credits, Rebates & Savings | Department of Energy

    Energy.gov [DOE] (indexed site)

    additional height up to 3 stories for special exception site plan requests. The site plan proposal must guarantee a minimum level of energy savings and a LEED rating at the Silver,...

  15. ARM - Datastreams - 915rwptempmom

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

    noise ratio dB*100 ssnr ( time, height ) Acoustic spectral width ms; 100*%, see comment ... Locations North Slope Alaska NSA C1 Browse Data Central Facility, Barrow AK retired ...

  16. Property:Scale Test | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    it generated 40kW in 2 5 m wave height and 4 sec wave period condition MHK TechnologiesHydroGen 10 + Tenths of tests at sea have already been performed MHK TechnologiesHydroflo...

  17. Microsoft Word - TOC&Units.doc

    Office of Legacy Management (LM)

    ... 1-15 Figure 1-7 2004 Wind Rose, 33-Foot (10-Meter) Height...... 1-17 Figure 1-8 2004 Wind Rose, 197-Foot (60-Meter) ...

  18. ARM - VAP Process - mwrret

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

    static Tb offsets are not applied. Additionally, if ARSCL (Active Remote Sensing of Cloud Layers) data is not available in real-time, cloud base height is determined from...

  19. ARM Scanning Radar

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

    (fixed elevation) 3. Sector scan (for cloud tracking) 4. Staring mode 3D-Cloud Products Case Study - Marine Stratocumulus 75 o Horizontal Wind Height In-cloud horizontal wind and...

  20. Daniel C. Tobin

    Energy.gov [DOE]

    [[{"type":"media","view_mode":"media_large","fid":"885651","attributes":{"alt":"Dan Tobin Portrait.jpg","class":"media-image caption","style":"font-size: 12px; width: 360px; height: 450px; float:...

  1. 1

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

    A multi-million dollar project is planned to raise the height of the dam and recover part of the lost storage, but any storage gains will be lost within 15 to 20 years if the ...

  2. Valri Lightner

    Office of Energy Efficiency and Renewable Energy (EERE)

    [[{"type":"media","view_mode":"media_large","fid":"886121","attributes":{"alt":"Lightner Photo_Cropped.jpg","class":"media-image caption","style":"font-size: 12px; width: 360px; height: 450px;...

  3. Douglas Schultz

    Office of Energy Efficiency and Renewable Energy (EERE)

    [[{"type":"media","view_mode":"media_large","fid":"885621","attributes":{"alt":"Doug Schultz Portrait.jpg","class":"media-image caption","style":"font-size: 12px; width: 360px; height: 450px; float...

  4. X:\\ARM_19~1\\P283-315.WPD

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

    Introduction A cloud and aerosol lidar data set from over a year of near continuous ... A cloud presence and base height algorithm is in use, and a data set from the CART site is ...

  5. ARM - Data Announcements Article

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

    Data Set Available Bookmark and Share Height-time plots for 30-minute ensemble means and standard deviations of liquid effective radius are shown here from the MICROBASEEN data set...

  6. institutional research

    National Nuclear Security Administration (NNSA)

    leadership on issues and matters related to R&D.

    Please select the links below for more information:

  1. stockpile

    National Nuclear Security Administration (NNSA)

    2%2A en The man who trains everyone on the bombs http:nnsa.energy.govblogman-who-trains-everyone-bombs

    height: 1.231;">

  2. Erie County, New York: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Places in Erie County, New York Akron, New York Alden, New York Amherst, New York Angola on the Lake, New York Angola, New York Billington Heights, New York Blasdell, New York...

  3. BPA-2012-00180-Consult Request

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

    9,2011); Patrick Reis and Darrcu Goode, Senators hedge bets aa4eadof CSAPR vote - Second anti-reg bill to gel vote Penys debate gaffe - Acrimony hits new heights in So(yndra...

  4. Tax Credits, Rebates & Savings | Department of Energy

    Energy.gov [DOE] (indexed site)

    Standards The base of any tower must be at least 110% of the maximum height of the tower away from any property line or public road. Towers must be at least 1,000 feet from...

  5. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Takatoshi ; Iwamoto, Akira ; Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki, 319-1195 We estimate the decrease of the Coulomb-barrier height between...

  6. ARM - Data Announcements Article

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

    with an improved cloud mask, attenuation flag, and extended height range to 20 kilometers. Data are now available at 2-minute and 10-minute resolution for the Raman Lidar...

  7. schwartz(2)-98.pdf

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

    7 Turnover Times and Mean Heights of Modeled Sulfate and SO 2 over the North Atlantic and Adjacent Continental Regions S. E. Schwartz and C. M. Benkovitz Environmental Chemistry...

  8. Geologic Map of the Eugene Mountains, Northwestern Nevada | Open...

    OpenEI (Open Energy Information) [EERE & EIA]

    Northwestern NevadaInfo GraphicMapChart Abstract Relief shown by contours and spot heights. Includes 3 col. cross sections, 3 col. graphical insets and 1 table designated...

  9. DOE/SC-ARM-0903

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

    ... heights and lifting condensation level (LCL) to the left, ... final.output.files,.data.transfer.and.processing.is.much.fas... for Sensible and Latent Heat Fluxes at the SGP Site ...

  10. PRELIMINARY SURVEY OF ROHM AND HAAS COMPANY Philadelphia, Pennsylvania

    Office of Legacy Management (LM)

    status of those facilities utilized under Atomic Energy Commission (AEC) Contract ... The measurements consisted of gamma-ray exposure rates made at a height of 1 m above floor ...

  11. Jefferson Lab - Science

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

    60 en 12 GeV Upgrade https:www.jlab.org12-gev-upgrade

    height"329"...

  12. sandia national labs

    National Nuclear Security Administration (NNSA)

    href"https:storify.comNNSANewsstockpile-stewardship" style"line-height: 1.231;">Social media comments and photos on the event via Storify.

  13. CTBT

    National Nuclear Security Administration (NNSA)

    href"https:storify.comNNSANewsstockpile-stewardship" style"line-height: 1.231;">Social media comments and photos on the event via Storify.

  14. Satellite Data Support for the ARM Climate Research Facility...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Satellite Data Support for the ARM Climate ... such as cloud amount, height, and optical depth as well as outgoing longwave and shortwave ...

  15. Source Physics Experiment

    National Nuclear Security Administration (NNSA)

    archived and available on the IRIS (Incorporated Research Institutions for Seismology) web site:height: 1.231;">http:...

  16. 1

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

    ... Pyrheliometer (NIP) times the cosine of the solar zenith angle (Michalsky et al. 1999). ... The top panel shows retrieved cloud base and top heights from the MMCR and MPL. The ...

  17. Data Products from ECMWF (European Centre for Medium Range Weather Forecasts) Covering the MAGIC AMF2 Deployment

    DOE Data Explorer

    Ahlgrimm, Maike

    2015-04-02

    ECMWF derived diagnostic variables over MAGIC's ship path from Los Angeles, CA and Honolulu, HI. Two dimensional (time and height) slices were extracted once the ship's exact positions were known.

  18. Informal Report

    Office of Scientific and Technical Information (OSTI)

    ... conductivity of refer- ence, R ratio of area of reference sample to height, cmcm, R ... Temperature, and Pretreatment," Kunstoffe 51, No. 9, 512-517 (1961). 9. E. S. Watson, M. ...

  19. untitled

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

    1.1.9 United States - Wind Resource Map This map shows the annual average wind power estimates at a height of 50 meters. It is a combination of high resolution and low...

  20. ARM - Data Announcements Article

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

    at the 2012 ASR Science Team Meeting and received a recommendation from the lidar focus group, PBL height interest group, and Cloud Life Cycle working group that led to the...

  1. Operating Experience Level 3, Dangers of Objects Falling into Normally Occupied Areas

    Office of Energy Efficiency and Renewable Energy (EERE)

    This Operating Experience Level 3 (OE-3) document provides information about a safety concern related to the dangers of items falling from heights into spaces normally occupied by workers at Department of Energy (DOE) facilities.

  2. Native File Formats and PDFs on Websites Outside of the Energy...

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

    by 2020 reportheight"14" ... Links to the icons and their alt text should be coded as follows:

  3. Slender tip laser scalpel

    DOEpatents

    Veligdan, James T.

    2004-01-06

    A laser scalpel includes a ribbon optical waveguide extending therethrough and terminating at a slender optical cutting tip. A laser beam is emitted along the height of the cutting tip for cutting tissue therealong.

  4. ARM - Datastreams - 50rwpwindspec

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

    Oblique FFT bandwidth ms oband ( time ) Number of pulse code bits count pcbits ( time ) Pulse length ns plen ( time ) Pulse repetition frequency kHz prf ( time ) Height index...

  5. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Wind Data

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

    resource data at various hub heights and spatial resolutions for both land-based and offshore data including the data used in the maps located at the WINDExchange and U.S. DOE...

  6. NOTICE: U.S. Department of Energy (DOE) Portsmouth/Paducah Project...

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

    ... comply with any height requirements under local zoning ordinances. iii) Geology and Soils. ... Future uses of the PGDP site could have positive impacts to the regional economy. Based on ...

  7. Chemung County, New York: Energy Resources | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Climate Zone Subtype A. Places in Chemung County, New York Baldwin, New York Big Flats Airport, New York Big Flats, New York Catlin, New York Chemung, New York Elmira Heights, New...

  8. Idaho_SmithSwanLake

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

    Steve Smith, Swanlake Site 0603 Latitude: N. 42 deg. 29.804' Longitude: W. 112 deg. 01.934' Elevation: 6950' Anemometer Height: 20 Meters Placed in service: September 17, 2004...

  9. ARM - Facility News Article

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

    Bookmark and Share This chart shows the spectral and height dependence of the infrared cooling rates for a mid-latitude summer profile. Note that the majority of the infrared...

  10. Search for: All records | DOE PAGES

    Office of Scientific and Technical Information (OSTI)

    Here, two-dimensional (2-D) Along-Wind Range Height Indicator (AW-RHI) observations of a population of shallow cumuli (with and without precipitation) from the 35-GHz scanning ARM ...

  11. ARM - Datastreams - vdisdrops

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

    ( time ) Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 basetime Hydrometeor Geometry Individual drop height as measured by camera A mm dropheighta ( time ) Hydrometeor...

  12. The Right Idea at the Right Time - 2004 DOE Tribal Energy Program...

    Energy.gov [DOE] (indexed site)

    A Unique, Modular Generator Design The rise and fall of the waves moves the outer cylinder ... and height of the waves facilitating real-time optimization of the power generation. ...

  13. 2006 - 11 | Jefferson Lab

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

    1 Nov 2006 Mon, 2006-11-27 14:00 Reaching New Heights in Accelerator Technology Wed, 2006-11-08 14:45 Researchers' Hottest New Laser Beams 14.2 kW

  14. Applicant/Institution: The University of Georgia Research Foundation...

    Office of Scientific and Technical Information (OSTI)

    ... Wind profiles from 20 to 905 m height were recorded every 30 ... probe (GMP343, Vaisala, Finland) with an atmospheric ... is important due to the energy and momentum they ...

  15. Unknown

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

    we study a D-spar composite structure, which is part of the airfoil shape. The basic dimension of the D-spar is 6' (long), 6" (wide) and 3" (height) as shown in Figure 2...

  16. SSMP

    National Nuclear Security Administration (NNSA)

    released its height: 1.231;">Fiscal Year 2016 Stockpile Stewardship and Management Plan (SSMP). The FY16 SSMP documents NNSA's 25-year strategic plan for...

  17. Kerry Duggan

    Energy.gov [DOE]

    [[{"type":"media","view_mode":"media_large","fid":"719526","attributes":{"alt":"Photo of Kerry Duggan","class":"media-image caption","style":"width: 160px; height: 200px; float: right;","typeof":...

  18. MCNP Comparison With Point Source Measurements From a Portable...

    Office of Scientific and Technical Information (OSTI)

    and 37 cm 16 cm 32 cm in overall size It utilizes a P-type 50 mm diameter and 30 mm height coaxial HPGe detector and has more than 3 hours of battery life when fully charged. ...

  19. coulter-98.pdf

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

    As such, the height of the mixed layer (z i ) is a measure of the effectiveness of energy transfer from the sun to the earth's surface and, in turn, to the lower atmosphere (Stull ...

  20. Impact of Fixed Change on Metal-Insulator-Semiconductor Barrier...

    Office of Scientific and Technical Information (OSTI)

    Title: Impact of Fixed Change on Metal-Insulator-Semiconductor Barrier Height Reduction Authors: Hu, J. ; Nainani, A. ; Sun, Y. ; Saraswat, K.C. ; Wong, H.-S.P. Publication Date: ...

  1. A Unique Summer Experience at NNSA's Annual MSI Program | National...

    National Nuclear Security Administration (NNSA)

    Given that both of my grandfathers worked for defense contractors during the height of the Cold War, my family instilled in me a certain sense of patriotism. We have always ...

  2. CX-006984: Categorical Exclusion Determination

    Office of Energy Efficiency and Renewable Energy (EERE)

    Clean Energy Coalition - Michigan Green FleetsCX(s) Applied: B5.1Date: 09/22/2011Location(s): Sterling Heights, MichiganOffice(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory

  3. Single-Column Modeling C. J. Walcek Atmospheric Sciences Research...

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

    a is a function of height in the troposphere and represents the relative humidity depression from 100% at which cloud amount falls off to 37% (e-1): 0.2+a3 a <0.75 a -...

  4. ARM - Facility News Article

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

    scanning ARM precipitation radars at the SGP site and was performed using tools in the Python-ARM radar toolkit. Click on image to enlarge. This data plot shows the height and...

  5. Wind Energy Permitting Standards

    Energy.gov [DOE]

    The base of any tower must be at least 110% of the maximum height of the tower away from any property line or public road. Towers must be at least 1,000 feet from residential dwelling or occupied...

  6. Microsoft PowerPoint - C_pol_lightning_summary.ppt

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

    * no dead time * no signals rejected - TOA Method for lightning location IC - CG discrimination - Height of IC events Network Configuration Nov 05 - Feb 06 BoM C-POL and Berrimah...

  7. Susan Hamm

    Energy.gov [DOE]

    [[{"type":"media","view_mode":"media_large","fid":"1022446","attributes":{"alt":"Photo of Susan Hamm.","class":"media-image caption","style":"width: 161px; height: 242px; float: right;","typeof":...

  8. ARM - Data Announcements Article

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

    Derived Wind Profile Data from Doppler Lidar Ready for Review Bookmark and Share Height-time display of wind speed (colors) and direction (arrows) from the Doppler lidar at the ...

  9. ARM - Datastreams - dlrhi

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

    hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : DLRHI Doppler LIDAR Range-Height Indicator scan Active Dates 2011.07.21 - 2015.08.24 Measurement...

  10. ARM - Datastreams - dlrhi2

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

    from you Send us a note below or call us at 1-888-ARM-DATA. Send Datastream : DLRHI2 Doppler Lidar - Patrial Range-Height-Indicator scan Active Dates 2010.10.21 - 2010.11.21...

  11. Section 42

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

    The simulation domain has a 3600-m horizontal extent and a height of 2880 m. The ... This loss of water mass and reduction in cloud-top radiative cooling causes model ...

  12. Field Emission Cathode Gating for RF Electron Guns (IN-04-039...

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

    Contact ANL About This Technology

    Field emission (FE) gun          

    Field emission (FE) gun

    height: ...

  13. BPA-2016-00278-FOIA Request

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

    of actual ground observations, that measure the ground-to-line heights. Sincerely, James L. Buchal Murphy & Buchal LLP 3425 SE Yamhill Street, Suite 100 Portland, OR 97214 Phone:...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    of any tower must be at least 110% of the maximum height of the tower away from any property line or public road. Towers must be at least 1,000 feet from residential dwelling or...

  15. Tax Credits, Rebates & Savings | Department of Energy

    Energy.gov [DOE] (indexed site)

    base of any tower must be at least 110% of the maximum height of the tower away from any property line or public road. Towers must be at least 1,000 feet from residential dwelling...

  16. NREL-Wind Resource Assessment Handbook | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    or more measurement sites are located. The handbook's scope encompasses state-of-the-art measurement and analysis techniques at multiple heights on tall towers (e.g., 50 m) for a...

  17. Anemometer Data (Wind Speed, Direction) for Pascua Yaqui, AZ...

    OpenEI (Open Energy Information) [EERE & EIA]

    from a height of 20 m. The data was originally made available by Wind Powering America, a DOE Office of Energy Efficiency & Renewable Energy (EERE) program. Data and Resources...

  18. Minnis-P

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

    Over the ARM SGP Domain P. Minnis, W. L. Smith, Jr., and D. F. Young National Aeronautics ... together with the technique of Minnis and Smith (1998) to derive cloud fraction, height, ...

  19. ARM - Feature Stories and Releases Article

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

    November 16, 2015 [Feature Stories and Releases] Taking Stock of the Atmosphere Bookmark and Share ARM-ACME VI field campaign will chart changes in greenhouse gas levels Scientists are taking air samples at different heights above the Southern Great Plains site in this Cessna 206 aircraft. Scientists are taking air samples at different heights above the Southern Great Plains site in this Cessna 206 aircraft. For the next year, a Cessna 206 aircraft from the Atmospheric Radiation Measurement

  20. ARM - VAP Process - mplcbh

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

    Productsmplcbh Documentation & Plots Data Management Facility Plots (Quick Looks) ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send VAP : Cloud Base Height from MPL Using Scott-Spinhirne Algorithm (MPLCBH) Instrument Categories Cloud Properties Output Products mplcbh1scott : MPL: cloud base heights using the Scott/Spinhirne algorithm Primary Measurements The following measurements are those considered