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


1

Hydro, Solar, Wind The Future of Renewable Energy  

E-Print Network [OSTI]

Hydro, Solar, Wind The Future of Renewable Energy Joseph Flocco David Lath Department of Electrical. Hydropower Water has grown in previous years to become the most widely used form of renewable energy across years to come from Hydropower. It is considered to be a renewable energy source because it uses

Lavaei, Javad

2

What does it take to create a clean energy future for Washington? Solar, Wind, Hydro  

E-Print Network [OSTI]

Solar, Wind, Hydro A Complete Energy System Home and Commercial Generation Demand Response 10-10 m 10's leadership and economic advantages in clean energy. - The mission of the Clean Energy Institute is to accelerate the adoption of a clean energy future by advancing next generation solar energy and electrical

Hochberg, Michael

3

Wind/Hydro Study  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched FerromagnetismWaste and MaterialsWenjun DengWISPWind Industry2 BONNEVILLEWind/Hydro

4

Final Report - Wind and Hydro Energy Feasibility Study - June 2011  

SciTech Connect (OSTI)

This feasibility examined two of the Yurok Tribe's most promising renewable energy resources, wind and hydro, to provide the Tribe detailed, site specific information that will result in a comprehensive business plan sufficient to implement a favorable renewable energy project.

Jim Zoellick; Richard Engel; Rubin Garcia; Colin Sheppard

2011-06-17T23:59:59.000Z

5

An Integrated Approach for Optimal Coordination of Wind Power and Hydro Pumping Storage  

E-Print Network [OSTI]

1 An Integrated Approach for Optimal Coordination of Wind Power and Hydro Pumping Storage Edgardo D of the integrated system. Keywords: wind power, generation dispatch, pumped storage, hydro generation, deterministic is the active power delivered by the wind-hydro plant, during interval i; PHi is the active power produced

Paris-Sud XI, Université de

6

Solar and Wind Rights  

Broader source: Energy.gov [DOE]

Wisconsin has several laws that protect a resident's right to install and operate a solar or wind energy system. These laws cover zoning restrictions by local governments, private land use...

7

The Solar Wind Energy Flux  

E-Print Network [OSTI]

The solar-wind energy flux measured near the ecliptic is known to be independent of the solar-wind speed. Using plasma data from Helios, Ulysses, and Wind covering a large range of latitudes and time, we show that the solar-wind energy flux is independent of the solar-wind speed and latitude within 10%, and that this quantity varies weakly over the solar cycle. In other words the energy flux appears as a global solar constant. We also show that the very high speed solar-wind (VSW > 700 km/s) has the same mean energy flux as the slower wind (VSW < 700 km/s), but with a different histogram. We use this result to deduce a relation between the solar-wind speed and density, which formalizes the anti-correlation between these quantities.

Chat, G Le; Meyer-Vernet, N

2012-01-01T23:59:59.000Z

8

Solar and Wind Permitting Laws  

Broader source: Energy.gov [DOE]

New Jersey has enacted three separate laws addressing local permitting practices for solar and wind energy facilities. The first deals with solar and wind facilities located in industrial-zoned...

9

Solar and Wind Contractor Licensing  

Broader source: Energy.gov [DOE]

The Connecticut Department of Consumer Protection (DCP) is authorized to issue licenses for solar-thermal work, solar-electric work and wind-electric work. "Solar thermal work" is defined as "the...

10

Petrovay: Solar physics Solar wind and heliosphere THE SOLAR WIND AND THE HELIOSPHERE  

E-Print Network [OSTI]

with high first ionization potential are underrepresented in solar wind. Probable cause: ambipolar diffusion: Solar physics Solar wind and heliosphere Potential explanation: belt due to higher pressurePetrovay: Solar physics Solar wind and heliosphere THE SOLAR WIND AND THE HELIOSPHERE 1951: First

Petrovay, Kristóf

11

Solar and Wind Contractor Licensing  

Broader source: Energy.gov [DOE]

All solar and wind energy installations must be performed by a contractor duly licensed by and in good standing with the Louisiana Contractors Licensing Board with a classification of "Solar Energy...

12

Supercomputers Capture Turbulence in the Solar Wind  

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

Capture Turbulence in the Solar Wind Supercomputers Capture Turbulence in the Solar Wind Berkeley Lab visualizations could help scientists forecast destructive space weather...

13

Quidi Vidi Lake Hydro Power Demonstration Project  

E-Print Network [OSTI]

walking trail Comprised of a micro hydro generator a wind turbine and a solar array, metered and interpreted This presentation describes the preliminary work on the micro hydro component of the installation interests in using existing infrastructure for low impact micro hydro generation. Insurmountable Roadblocks

Bruneau, Steve

14

Wind and Solar Curtailment: Preprint  

SciTech Connect (OSTI)

High penetrations of wind and solar generation on power systems are resulting in increasing curtailment. Wind and solar integration studies predict increased curtailment as penetration levels grow. This paper examines experiences with curtailment on bulk power systems internationally. It discusses how much curtailment is occurring, how it is occurring, why it is occurring, and what is being done to reduce curtailment. This summary is produced as part of the International Energy Agency Wind Task 25 on Design and Operation of Power Systems with Large Amounts of Wind Power.

Lew, D.; Bird, L.; Milligan, M.; Speer, B.; Wang, X.; Carlini, E. M.; Estanqueiro, A.; Flynn, D.; Gomez-Lazaro, E.; Menemenlis, N.; Orths, A.; Pineda, I.; Smith, J. C.; Soder, L.; Sorensen, P.; Altiparmakis, A.; Yoh, Y.

2013-09-01T23:59:59.000Z

15

Solar wind versus magnetosheath turbulence.  

E-Print Network [OSTI]

order statistics (Number of data points ~ 105) 22 4 !" !" = # # # $ $ b b F ! ! " ! # )()( tbtb bSolar wind versus magnetosheath turbulence. Observations of Alfven vortices. O. Alexandrova A properties of turbulence (hydrodynamics) is independent on the energy injection & dissipation energy

Demoulin, Pascal

16

Indian Country Solar Energy Potential Estimates & DOE IE Updates  

Office of Environmental Management (EM)

borrower must be rural small business or agricultural producer * Technology: biomass, solar, wind, hydro, hydrogen, geothermal * Applications: equipment, construction,...

17

Solar and Wind Rights  

Broader source: Energy.gov [DOE]

Illinois law prohibits homeowners' associations, common interest community associations and condominium unit owners' associations from preventing homeowners from using or installing solar energy...

18

ASYMMETRIC SOLAR WIND ELECTRON DISTRIBUTIONS  

SciTech Connect (OSTI)

The present paper provides a possible explanation for the solar wind electron velocity distribution functions possessing asymmetric energetic tails. By numerically solving the electrostatic weak turbulence equations that involve nonlinear interactions among electrons, Langmuir waves, and ion-sound waves, it is shown that different ratios of ion-to-electron temperatures lead to the generation of varying degrees of asymmetric tails. The present finding may be applicable to observations in the solar wind near 1 AU and in other regions of the heliosphere and interplanetary space.

Yoon, Peter H.; Kim, Sunjung; Lee, Junggi; Lee, Junhyun; Park, Jongsun; Park, Kyungsun; Seough, Jungjoon [School of Space Research, Kyung Hee University, Yongin-Si, Gyeonggi-Do 446-701 (Korea, Republic of); Hong, Jinhy [Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701 (Korea, Republic of)

2012-08-20T23:59:59.000Z

19

Western Wind and Solar Integration Study  

SciTech Connect (OSTI)

This report provides a full description of the Western Wind and Solar Integration Study (WWSIS) and its findings.

GE Energy

2010-05-01T23:59:59.000Z

20

Turbulence of the Solar Wind Studies of the Solar Wind Using the ACE and Helios Spacecraft  

E-Print Network [OSTI]

Turbulence of the Solar Wind Studies of the Solar Wind Using the ACE and Helios Spacecraft Bejamin;Abstract The solar wind is a supersonic ow of plasma emanating from the sun and traveling through the interplanetary medium to the outermost reaches of the heliosphere. The solar wind experiences in situ

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


21

Solar and Wind Technologies for Hydrogen Production: Report to Congress Solar and Wind Technologies  

E-Print Network [OSTI]

.........................5 1.4 Potential Capacity for Hydrogen Production from Conventional Electrolysis Using Wind and SolarSolar and Wind Technologies for Hydrogen Production: Report to Congress Solar and Wind Technologies For Hydrogen Production Report to Congress December 2005 (ESECS EE-3060) #12;Solar and Wind Technologies

22

Geek-Up[04.01.2011]: Charting Wind, Thermal, Hydro Generation  

Broader source: Energy.gov [DOE]

Check out Bonneville Power Administration’s new near real-time energy monitoring – it displays the output of all wind, thermal and hydro generation in the agency’s balancing authority against its load. Updated every five minutes, it’s a great resource for universities, research laboratories and other utilities.

23

Risk-Based Strategies for Wind/Pumped-Hydro Coordination under Electricity Markets  

E-Print Network [OSTI]

be reduced by coupling the wind farm with energy storage facilities, thus constituting a virtual power plant energy sources (RES). However, the operation of RES units such as wind or solar plants presents the inconve- nience of being intrinsically dependent on the variability of the wind or solar resource

Boyer, Edmond

24

The Solar Wind Helium Abundance: Variation with Wind Speed and the Solar Cycle  

E-Print Network [OSTI]

The Solar Wind Helium Abundance: Variation with Wind Speed and the Solar Cycle Matthias R. Aellig Alamos National Lab., Los Alamos, NM 87545 Abstract We investigate the helium abundance in the solar wind of 1994 and early 2000 are analyzed. In agreement with similar work for previous solar cycles, we find

Richardson, John

25

Utility Wind Integration Group Distributed Wind/Solar Interconnection Workshop  

Broader source: Energy.gov [DOE]

This two-day workshop will answer your questions about interconnecting wind and solar plants and other distributed generation applications to electric distribution systems while providing insight...

26

The Heating & Acceleration of the Solar Wind  

E-Print Network [OSTI]

The Heating & Acceleration of the Solar Wind Eliot Quataert (UC Berkeley) Collaborators: Steve & Slow Winds · The Puzzle of the High Frequency Cascade (or the lack thereof ....) · Possible Solutions #12;Background · Heating required to accelerate the solar wind · Early models invoked e- conduction

Wurtele, Jonathan

27

MAGNETOHYDRODYNAMIC SIMULATIONS OF THE SOLAR CORONA AND SOLAR WIND USING A BOUNDARY TREATMENT TO LIMIT SOLAR WIND MASS FLUX  

E-Print Network [OSTI]

MAGNETOHYDRODYNAMIC SIMULATIONS OF THE SOLAR CORONA AND SOLAR WIND USING A BOUNDARY TREATMENT TO LIMIT SOLAR WIND MASS FLUX Keiji Hayashi W. W. Hansen Experimental Physics Laboratory, Stanford ABSTRACT Magnetohydrodynamic simulations of the solar corona and solar wind are sensitive to conditions

California at Berkeley, University of

28

Solar and Wind Easements and Rights Laws  

Broader source: Energy.gov [DOE]

Nevada's general statutes provide owners of solar and wind energy systems protection against restrictions that would otherwise prevent them from installing these systems on their property. NRS §...

29

How Do Wind and Solar Power Affect Grid Operations: The Western Wind and Solar Integration Study  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study is one of the largest regional wind and solar integration studies to date, examining the operational impact of up to 35% wind, photovoltaics, and concentrating solar power on the WestConnect grid in Arizona, Colorado, Nevada, New Mexico, and Wyoming. This paper reviews the scope of the study, the development of wind and solar datasets, and the results to date on three scenarios.

Lew, D.; Milligan, M.; Jordan, G.; Freeman, L.; Miller, N.; Clark, K.; Piwko, R.

2009-01-01T23:59:59.000Z

30

Wind loading on solar collectors  

SciTech Connect (OSTI)

The present design methodology for the determination of wind loading on the various solar collectors has been reviewed and assessed. The total force coefficients of flat plates of aspect ratios 1.0 and 3.0, respectively, at various angles of attack obtained by using the guidelines of the ANSI A58.1-1982, have been compared with those obtained by using the methodology of the ASCE Task Committee, 1961, and the experimental results of the full-scale test of heliostats by Peglow. The turbulent energy spectra, currently employed in the building code, are compared with those of Kaimal et al., Lumley, and Ponofsky for wind velocities of 20.0 m/s and 40.24 m/s at an elevation of 9.15 m. The longitudinal spectra of the building code overestimates the Kaimal spectra in the frequency range of 0.007 Hz to 0.08 Hz and underestimates beyond the frequency of 0.08 Hz. The peak angles of attack, on the heliostat, stowed in horizontal position, due to turbulent vertical and lateral components of wind velocity, have been estimated by using Daniel's methodology for three wind velocities and compared with the value suggested by the code. The experimental results of a simple test in the laboratory indicate the feasibility of decreasing the drag forces of the flat plate by reducing the solidity ratio.

Bhaduri, S.; Murphy, L.M.

1985-06-01T23:59:59.000Z

31

Enabling Technologies for High Penetration of Wind and Solar Energy  

SciTech Connect (OSTI)

High penetration of variable wind and solar electricity generation will require modifications to the electric power system. This work examines the impacts of variable generation, including uncertainty, ramp rate, ramp range, and potentially excess generation. Time-series simulations were performed in the Texas (ERCOT) grid where different mixes of wind, solar photovoltaic and concentrating solar power provide up to 80% of the electric demand. Different enabling technologies were examined, including conventional generator flexibility, demand response, load shifting, and energy storage. A variety of combinations of these technologies enabled low levels of surplus or curtailed wind and solar generation depending on the desired penetration of renewable sources. At lower levels of penetration (up to about 30% on an energy basis) increasing flexible generation, combined with demand response may be sufficient to accommodate variability and uncertainty. Introduction of load-shifting through real-time pricing or other market mechanisms further increases the penetration of variable generation. The limited time coincidence of wind and solar generation presents increasing challenges as these sources provide greater than 50% of total demand. System flexibility must be increased to the point of virtually eliminating must-run baseload generators during periods of high wind and solar generation. Energy storage also becomes increasingly important as lower cost flexibility options are exhausted. The study examines three classes of energy storage - electricity storage, including batteries and pumped hydro, hybrid storage (compressed-air energy storage), and thermal energy storage. Ignoring long-distance transmission options, a combination of load shifting and storage equal to about 12 hours of average demand may keep renewable energy curtailment below 10% in the simulated system.

Denholm, P.

2011-01-01T23:59:59.000Z

32

Solar and Wind Energy Equipment Exemption  

Broader source: Energy.gov [DOE]

In Wisconsin, any value added by a solar-energy system or a wind-energy system is exempt from general property taxes. A solar-energy system is defined as "equipment which directly converts and then...

33

Large-scale structure of the fast solar wind  

E-Print Network [OSTI]

measurements of Solar Wind velocity, in press, Journal of1992), The Ulysses solar wind plasma experiment, AstronomyA. Hewish (1967), The solar wind outside the plane of the

Bisi, M. M.; Fallows, R. A.; Breen, A. R.; Habbal, S. Rifai; Jones, R. A.

2007-01-01T23:59:59.000Z

34

THE SOLAR WIND PLASMA Dr. Joe Borovsky  

E-Print Network [OSTI]

involved multidipole plasma devices. Current research interests focus on structure in the solar wind THE SOLAR WIND PLASMA Dr. Joe Borovsky Los Alamos National Laboratory and University, magnetized, collisionless plasma, important for the geomagnetic activity that it drives at Earth and for its

Shyy, Wei

35

The Structure of the Solar Wind in the Inner Heliosphere  

E-Print Network [OSTI]

through the solar wind and produce extreme conditions thatspeed wind during the SC 22 period. Extreme-ultraviolet (

Lee, Christina On-Yee

2010-01-01T23:59:59.000Z

36

How do Wind and Solar Power Affect Grid Operations: The Western Wind and Solar Integration Study; Preprint  

SciTech Connect (OSTI)

This paper reviews the scope of the Western Wind and Solar Integration Study, the development of wind and solar datasets, and the results to date on three scenarios.

Lew, D.; Milligan, M.; Jordan, G.; Freeman, L.; Miller, N.; Clark, K.; Piwko, R.

2009-09-01T23:59:59.000Z

37

Solar wind electron density and temperature over solar cycle 23: Thermal noise measurements on Wind  

E-Print Network [OSTI]

upstream of the EarthÃ?s bow shock. The WIND/WAVES thermal noise receiver was specially designed to measureSolar wind electron density and temperature over solar cycle 23: Thermal noise measurements on Wind the in situ plasma thermal noise spectra, from which the electron density and temperature can be accurately

California at Berkeley, University of

38

Wind and Solar Curtailment: Preprint  

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

Integration of Wind Power Into Power Systems as Well as on Transmission Networks for Offshore Wind Power Plants London, England October 22 - 24, 2013 Conference Paper NREL...

39

Solar and Wind Easements and Local Option Rights Laws  

Broader source: Energy.gov [DOE]

Nebraska's solar and wind easement provisions allow property owners to create binding solar and wind easements for the purpose of protecting and maintaining proper access to sunlight and wind. ...

40

Community Solar and Wind Grant Program  

Broader source: Energy.gov [DOE]

The Illinois Department of Commerce and Economic Opportunity (DCEO) is offering grants for community-scale solar and wind projects located in Illinois. Eligible businesses can apply for up to 30%...

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


41

The solar wind in the outer heliosphere  

E-Print Network [OSTI]

The solar wind evolves as it moves outward due to interactions with both itself and with the circum-heliospheric interstellar medium. The speed is, on average, constant out to 30 AU, then starts a slow decrease due to the ...

Richardson, John D.

42

Wind and Solar Energy Curtailment Practices (Presentation)  

SciTech Connect (OSTI)

This presentation to the fall 2014 technical meeting of the Utility Variable-Generation Integration Group summarizes experience with curtailment of wind and solar in the U.S.

Bird, L.; Cochran, J.; Wang, X.

2014-10-01T23:59:59.000Z

43

Western Wind and Solar Integration Study  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study (WWSIS) is one of the largest regional wind and solar integration studies to date. It was initiated in 2007 to examine the operational impact of up to 35% energy penetration of wind, photovoltaics (PV), and concentrating solar power (CSP) on the power system operated by the WestConnect group of utilities in Arizona, Colorado, Nevada, New Mexico, and Wyoming (see study area map). WestConnect also includes utilities in California, but these were not included because California had already completed a renewable energy integration study for the state. This study was set up to answer questions that utilities, public utilities commissions, developers, and regional planning organizations had about renewable energy use in the west: (1) Does geographic diversity of renewable energy resource help mitigate variability; (2) How do local resources compare to out-of-state resources; (3) Can balancing area cooperation help mitigate variability; (4) What is the role and value of energy storage; (5) Should reserve requirements be modified; (6) What is the benefit of forecasting; and (7) How can hydropower help with integration of renewables? The Western Wind and Solar Integration Study is sponsored by the U.S. Department of Energy (DOE) and run by NREL with WestConnect as a partner organization. The study follows DOE's 20% Wind Energy by 2030 report, which did not find any technical barriers to reaching 20% wind energy in the continental United States by 2030. This study and its partner study, the Eastern Wind Integration and Transmission Study, performed a more in-depth operating impact analysis to see if 20% wind energy was feasible from an operational level. In DOE/NREL's analysis, the 20% wind energy target required 25% wind energy in the western interconnection; therefore, this study considered 20% and 30% wind energy to bracket the DOE analysis. Additionally, since solar is rapidly growing in the west, 5% solar was also considered in this study. The goal of the Western Wind and Solar Integration Study is to understand the costs and operating impacts due to the variability and uncertainty of wind, PV, and CSP on the grid. This is mainly an operations study, (rather than a transmission study), although different scenarios model different transmission build-outs to deliver power. Using a detailed power system production simulation model, the study identifies operational impacts and challenges of wind energy penetration up to 30% of annual electricity consumption.

Lew, D.; Piwko, R.; Jordan, G.; Miller, N.; Clark, K.; Freeman, L.; Milligan, M.

2011-01-01T23:59:59.000Z

44

Solar Wind Forecasting with Coronal Holes  

E-Print Network [OSTI]

An empirical model for forecasting solar wind speed related geomagnetic events is presented here. The model is based on the estimated location and size of solar coronal holes. This method differs from models that are based on photospheric magnetograms (e.g., Wang-Sheeley model) to estimate the open field line configuration. Rather than requiring the use of a full magnetic synoptic map, the method presented here can be used to forecast solar wind velocities and magnetic polarity from a single coronal hole image, along with a single magnetic full-disk image. The coronal hole parameters used in this study are estimated with Kitt Peak Vacuum Telescope He I 1083 nm spectrograms and photospheric magnetograms. Solar wind and coronal hole data for the period between May 1992 and September 2003 are investigated. The new model is found to be accurate to within 10% of observed solar wind measurements for its best one-month periods, and it has a linear correlation coefficient of ~0.38 for the full 11 years studied. Using a single estimated coronal hole map, the model can forecast the Earth directed solar wind velocity up to 8.5 days in advance. In addition, this method can be used with any source of coronal hole area and location data.

S. Robbins; C. J. Henney; J. W. Harvey

2007-01-09T23:59:59.000Z

45

Oxygen Loss from Venus and the Influence of Extreme Solar Wind Conditions  

E-Print Network [OSTI]

the influence of extreme solar wind conditions on O + escapeand the Influence of Extreme Solar Wind Conditions by Tessand the Influence of Extreme Solar Wind Conditions Copyright

McEnulty, Tess

2012-01-01T23:59:59.000Z

46

Measuring the Isotopic Composition of Solar Wind Noble Gases  

E-Print Network [OSTI]

noble gases. #12;Exploring the Solar Wind94 Light solar wind noble gases were directly measured by mass of the light gases are known to vary with energy, so none of these provided solar isotopic and elemental5 Measuring the Isotopic Composition of Solar Wind Noble Gases Alex Meshik, Charles Hohenberg, Olga

47

Solar-wind minor ions: recent observations  

SciTech Connect (OSTI)

During the years following the Solar Wind Four Conference at Burghausen our knowledge of the solar wind ion composition and dynamics has grown. There have been some surprises, and our understanding of the evolution of the solar wind has been improved. Systematic studies have shown that the minor ions generally travel with a common bulk speed and have temperatures roughly proportional to their masses. It has been determined that the /sup 3/He/sup + +/ content varies greatly; /sup 3/He/sup + +///sup 4/He/sup + +/ ranges from as high as 10/sup 2/ values to below 2 x 10/sup -4/. In some solar wind flows which can be related to energetic coronal events, the minor ions are found in unusual ionization states containing Fe/sup 16 +/ as a prominent ion, showing that the states were formed at unusually high temperatures. Unexpectedly, in a few flows substantial quantities of /sup 4/He/sup +/ have been detected, sometimes with ions identifiable as O/sup 2 +/ and O/sup 3 +/. Surprisingly, in some of these examples the ionization state is mixed showing that part of the plasma escaped the corona without attaining the usual million-degree temperatures while other parts were heated more nearly in the normal manner. Additionally, detailed studies of the minor ions have increased our understanding of the coronal expansion. For example, such studies have contributed to identifying near equatorial coronal streamers as the source of solar wind flows between high speed streams.

Bame, S.J.

1982-01-01T23:59:59.000Z

48

Wind Issues in Solar Thermal Performance Ratings: Preprint  

SciTech Connect (OSTI)

We suggest that wind bias against unglazed solar water heaters be mitigated by using a calibrated collector model to derive a wind correction to the measured efficiency curve.

Burch, J.; Casey, R.

2009-04-01T23:59:59.000Z

49

The global nature of solar cycle variations of the solar wind dynamic pressure  

E-Print Network [OSTI]

1 The global nature of solar cycle variations of the solar wind dynamic pressure John Richardson: SOLAR WIND DYNAMIC PRESSURE #12;2 Abstract. The solar wind dynamic pressure measured near the ecliptic varies over the solar cycle. A major unanswered question has been whether this variation is a global

Richardson, John

50

Unique observations of a geomagnetic SI+ Solar sources and associated solar wind fluctuations  

E-Print Network [OSTI]

, arising entirely from nonexplosive solar events. [4] Though the very first observations, by the Mariner 2Unique observations of a geomagnetic SI+ - SI- pair: Solar sources and associated solar wind- pair was closely correlated with corresponding variations in the solar wind density, while solar wind

Padmanabhan, Janardhan

51

Excise Tax Exemption for Solar- or Wind-Powered Systems  

Broader source: Energy.gov [DOE]

Massachusetts law exempts any "solar or wind powered climatic control unit and any solar or wind powered water heating unit or any other type unit or system powered thereby," that qualifies for the...

52

The Western Wind and Solar Integration Study: The Effects of...  

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

Wind and Solar Power- Induced Cycling on Wear-and-Tear Costs and Emissions Results From the Western Wind and Solar Integration Study Phase 2 The electric grid is a highly complex,...

53

EECBG Success Story: Hybrid Solar-Wind Generates Savings for...  

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

Hybrid Solar-Wind Generates Savings for South Dakota City EECBG Success Story: Hybrid Solar-Wind Generates Savings for South Dakota City July 19, 2010 - 4:05pm Addthis The small...

54

Solar and Wind Technologies for Hydrogen Production Report to Congress  

Fuel Cell Technologies Publication and Product Library (EERE)

DOE's Solar and Wind Technologies for Hydrogen Production Report to Congress summarizes the technology roadmaps for solar- and wind-based hydrogen production. Published in December 2005, it fulfills t

55

Solar and Wind Easements and Local Option Rights Laws  

Broader source: Energy.gov [DOE]

Minnesota law provides for the creation of solar and wind easements for solar and wind-energy systems. As in many other states, these easements are voluntary contracts. However, unlike similar...

56

Solar wind samples give insight into birth of solar system  

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

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

57

Solar and Wind Equipment Certification  

Broader source: Energy.gov [DOE]

Collectors, heat exchangers and storage units of solar energy systems -- and the installation of these systems -- sold or installed in Arizona must have a warranty of at least two years. The...

58

SUBMITTED TO GRL 1 Thermal Anisotropies in the Solar Wind  

E-Print Network [OSTI]

SUBMITTED TO GRL 1 E Thermal Anisotropies in the Solar Wind: vidence of Heating by Interstellar cyclotron instabilit s generated by newly created pickup ions and heats the thermal solar wind protons TO GRL 2 T Introduction he thermal anisotropy of the solar wind is the ratio between the temperatures p

Richardson, John

59

Magnetospheric responses to sudden and quasiperiodic solar wind variations  

E-Print Network [OSTI]

Magnetospheric responses to sudden and quasiperiodic solar wind variations K.-H. Kim,1 C. A.e., magnetosphere, magnetosheath, and solar wind) because of the solar wind dynamic pressure variations and its high orbital inclination near the subsolar magnetopause meridian. When Polar was in the magnetosheath

California at Berkeley, University of

60

The Solar Wind and Its Interaction with the Interstellar Medium  

E-Print Network [OSTI]

outward through the solar system and interacts with the interstellar neutrals which slow and heat the wind. The arrows in the top panel show the flow of the solar wind and the interstellar J. D. Richardson CenterThe Solar Wind and Its Interaction with the Interstellar Medium John D. Richardson Abstract

Richardson, John

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


61

Identifying Wind and Solar Ramping Events: Preprint  

SciTech Connect (OSTI)

Wind and solar power are playing an increasing role in the electrical grid, but their inherent power variability can augment uncertainties in power system operations. One solution to help mitigate the impacts and provide more flexibility is enhanced wind and solar power forecasting; however, its relative utility is also uncertain. Within the variability of solar and wind power, repercussions from large ramping events are of primary concern. At the same time, there is no clear definition of what constitutes a ramping event, with various criteria used in different operational areas. Here the Swinging Door Algorithm, originally used for data compression in trend logging, is applied to identify variable generation ramping events from historic operational data. The identification of ramps in a simple and automated fashion is a critical task that feeds into a larger work of 1) defining novel metrics for wind and solar power forecasting that attempt to capture the true impact of forecast errors on system operations and economics, and 2) informing various power system models in a data-driven manner for superior exploratory simulation research. Both allow inference on sensitivities and meaningful correlations, as well as the ability to quantify the value of probabilistic approaches for future use in practice.

Florita, A.; Hodge, B. M.; Orwig, K.

2013-01-01T23:59:59.000Z

62

Solar Wind | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende New EnergyAnatoliaSciraShenhuaWindPowerSohamBG Jump Place:

63

Lognormal distributions and spectra of solar wind plasma fluctuations: Wind 19951998  

E-Print Network [OSTI]

Lognormal distributions and spectra of solar wind plasma fluctuations: Wind 1995­1998 L. F. Burlaga, and T were double-peaked; nevertheless, the number of observations associated with the fast wind distribution with large tails. There remains a need for dynamical models of the solar wind that incorporate and describe

Richardson, John

64

The Solar Wind in the Outer Heliosphere at Solar John D. Richardson and Chi Wang  

E-Print Network [OSTI]

The Solar Wind in the Outer Heliosphere at Solar Maximum John D. Richardson and Chi Wang Center solar wind observations in the outer heliosphere, concentrating on the recent data near solar maximum. The speed and temperature tend to be lower at solar maximum, due to the lack of coronal holes. The near

Richardson, John

65

Western Wind and Solar Integration Study (Fact Sheet)  

SciTech Connect (OSTI)

Initiated in 2007 to examine the operational impact of up to 35% penetration of wind, photovoltaic (PV), and concentrating solar power (CSP) energy on the electric power system, the Western Wind and Solar Integration Study (WWSIS) is one of the largest regional wind and solar integration studies to date. The goal is to understand the effects of variability and uncertainty of wind, PV, and CSP on the grid. In the Western Wind and Solar Integration Study Phase 1, solar penetration was limited to 5%. Utility-scale PV was not included because of limited capability to model sub-hourly, utility-scale PV output . New techniques allow the Western Wind and Solar Integration Study Phase 2 to include high penetrations of solar - not only CSP and rooftop PV but also utility-scale PV plants.

Not Available

2012-09-01T23:59:59.000Z

66

The Solar Wind, CMEs and the Origins of Heliospheric Activity  

E-Print Network [OSTI]

release o Coronal holes o Source of high-speed solar wind #12;peter.gallagher@tcd.ie #12;#12;peter Parker => Parker Spiral: r - r0 = -(v/ )( - 0) o Winding angle: o Inclined at ~45º at 1 AU and ~90º by 10The Solar Wind, CMEs and the Origins of Heliospheric Activity Peter T. Gallagher School of Physics

67

Solar wind electron temperature and density measurements on the Solar Orbiter with thermal noise spectroscopy  

E-Print Network [OSTI]

Solar wind electron temperature and density measurements on the Solar Orbiter with thermal noise of the plasma thermal noise analysis for the Solar Orbiter, in order to get accurate measurements of the total of their small mass and therefore large thermal speed, the solar wind electrons are expected to play a major role

California at Berkeley, University of

68

Experimental investigation of wind effect on solar panels.  

E-Print Network [OSTI]

??Photovoltaic Solar Panels for electricity generation are outdoor low-rise structures that are vulnerable to damage by the wind. The existing building codes do not contain… (more)

Abiola-Ogedengbe, Ayodeji

2013-01-01T23:59:59.000Z

69

New Report: Integrating More Wind and Solar Reduces Utilities...  

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

New Report: Integrating More Wind and Solar Reduces Utilities' Carbon Emissions and Fuel Costs October 1, 2013 - 3:51pm Addthis The National Renewable Energy Laboratory (NREL)...

70

Clark County- Solar and Wind Building Permit Guides  

Broader source: Energy.gov [DOE]

Clark County, Nevada has established guides for obtaining building permits for wind and solar photovoltaic (PV) systems for both residential and commercial purposes. The guides outline applicable...

71

Solar and Wind Energy Resource Assessment Programme's Renewable...  

Open Energy Info (EERE)

Energy Resource Explorer Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Solar and Wind Energy Resource Assessment Programme's Renewable Energy Resource Explorer...

72

Optimal investment in wind and solar power in California.  

E-Print Network [OSTI]

?? Wind and solar electricity are increasingly attractive as their costs decline and greater value is given to avoiding greenhouse gas emissions. However, these technologies… (more)

Fripp, Matthias

2010-01-01T23:59:59.000Z

73

Solar and Wind Easements and Rights Laws and Local Option Solar Rights Law  

Broader source: Energy.gov [DOE]

Oregon has several laws that protect access to solar and wind resources and the use of solar energy systems. Oregon's solar access laws date back to 1979 and state that no person conveying or...

74

ELECTRON PROPERTIES AND COULOMB COLLISIONS IN THE SOLAR WIND AT 1 AU: WIND OBSERVATIONS  

E-Print Network [OSTI]

collisions thus seem to play a part in the regulation of the electron heat flux in the solar wind. Subject, the electrons play an important role in the solar wind expansion and the associated energy transport since of the energy sources that drives the expansion of the solar corona (Hundhausen 1972; Feldman et al. 1975

California at Berkeley, University of

75

City of Madison- Solar and Wind Access and Planning Laws  

Broader source: Energy.gov [DOE]

Madison, Wisconsin, has established several local laws to facilitate the planning and permitting of solar and wind systems. The planning guidelines are specific to solar, while the permitting laws...

76

Residential Solar and Wind Energy Systems Tax Credit  

Broader source: Energy.gov [DOE]

Arizona's Solar Energy Credit is available to individual taxpayers who install a solar or wind energy device at the taxpayer's Arizona residence. The credit is allowed against the taxpayer's...

77

Solar Wind: Manifestations of Solar Activity E N CYC LO PE D IA O F AS T R O N O MY AN D AS T R O PHYS I C S Solar Wind: Manifestations of Solar  

E-Print Network [OSTI]

Solar Wind: Manifestations of Solar Activity E N CYC LO PE D IA O F AS T R O N O MY AN D AS T R O PHYS I C S Solar Wind: Manifestations of Solar Activity The Sun's outer atmosphere, the corona, is continually heated and expands to create the solar wind. Solar activity waxes and wanes with the 11 yr cycle

Webb, David F.

78

Denver Solar and Wind | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revision has beenFinancialSilver Peak AreaSolar and Wind

79

ELECTRON TRANSPORT IN THE FAST SOLAR WIND  

SciTech Connect (OSTI)

The electron velocity distribution function is studied in the extended solar corona above coronal holes (i.e., the inner part of the fast solar wind) from the highly collisional corona close to the Sun to the weakly collisional regions farther out. The electron kinetic equation is solved with a finite-element method in velocity space using a linearized Fokker-Planck collision operator. The ion density and temperature profiles are assumed to be known and the electric field and electron temperature are determined self-consistently. The results show quantitatively how much lower the electron heat flux and the thermal force are than predicted by high-collisionality theory. The sensitivity of the particle and heat fluxes to the assumed ion temperature profile and the applied boundary condition at the boundary far from the Sun is also studied.

Smith, H. M.; Marsch, E. [Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Strasse 2, 37191 Katlenburg-Lindau (Germany); Helander, P., E-mail: hakan.smith@ipp.mpg.de [Max-Planck-Institut fuer Plasmaphysik, Wendelsteinstrasse 1, 17491 Greifswald (Germany)

2012-07-01T23:59:59.000Z

80

Comment on "Air Emissions Due to Wind and Solar Power" and Supporting Information  

E-Print Network [OSTI]

due to wind and solar power. Environ. Sci. Technol. (2)Emissions Due to Wind and Solar Power” Andrew Mills, ? , †due to wind and solar power. Environ. Sci. Technol. (2)

Mills, Andrew D.

2011-01-01T23:59:59.000Z

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


81

Small Solar Wind Transients and Their Connection to the Large-Scale Coronal Structure  

E-Print Network [OSTI]

I.G. : 2006, In situ solar wind and magnetic ?eld signaturesPenou, E. : 2008, The IMPACT Solar Wind Electron Analyzer (Heliospheric images of the solar wind at Earth. Astrophys.

2009-01-01T23:59:59.000Z

82

Solar wind driving of magnetospheric ULF waves: Field line resonances driven by dynamic pressure fluctuations  

E-Print Network [OSTI]

Solar wind driving of magnetospheric ULF waves: Field line resonances driven by dynamic pressure observational studies suggest that solar wind dynamic pressure fluctuations can drive magnetosphericFedderMobarry (LFM) global, threedimensional magnetohydrodynamic (MHD) simulations of the solar wind

83

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

E-Print Network [OSTI]

on how various energy sources from the solar wind ultimatelymodes. The solar wind is an important energy source for ULFmodes. The solar wind is an important energy source for ULF

Hartinger, Michael David

2012-01-01T23:59:59.000Z

84

THE SOLAR WIND INTERACTION WITH VENUS J. G. LUHMANN  

E-Print Network [OSTI]

atmosphere 2.3. Ionosphere 3. Solar Wind at 0.7 AU 4. Solar wind interaction phenomena 4.1. Bow shock 4 dynanricpressurepV2 (p = density,v = velocity)equalsthe thermal pressure.The upstreamthermal pressurenk by the thermal pressureof the ionosphericplasma,after which it continuesalongits antisolarroute. This flow, which

California at Berkeley, University of

85

The Western Wind and Solar Integration Study Phase 2  

SciTech Connect (OSTI)

The electric grid is a highly complex, interconnected machine, and changing one part of the grid can have consequences elsewhere. Adding wind and solar affects the operation of the other power plants and adding high penetrations can induce cycling of fossil-fueled generators. Cycling leads to wear-and-tear costs and changes in emissions. Phase 2 of the Western Wind and Solar Integration Study (WWSIS-2) evaluated these costs and emissions and simulated grid operations for a year to investigate the detailed impact of wind and solar on the fossil-fueled fleet. This built on Phase 1, one of the largest wind and solar integration studies ever conducted, which examined operational impacts of high wind and solar penetrations in the West.

Lew, D.; Brinkman, G.; Ibanez, E.; Hodge, B. M.; Hummon, M.; Florita, A.; Heaney, M.

2013-09-01T23:59:59.000Z

86

OBSERVATION OF FLUX-TUBE CROSSINGS IN THE SOLAR WIND  

SciTech Connect (OSTI)

Current sheets are ubiquitous in the solar wind. They are a major source of the solar wind MHD turbulence intermittency. They may result from nonlinear interactions of the solar wind MHD turbulence or are the boundaries of flux tubes that originate from the solar surface. Some current sheets appear in pairs and are the boundaries of transient structures such as magnetic holes and reconnection exhausts or the edges of pulsed Alfven waves. For an individual current sheet, discerning whether it is a flux-tube boundary or due to nonlinear interactions or the boundary of a transient structure is difficult. In this work, using data from the Wind spacecraft, we identify two three-current-sheet events. Detailed examination of these two events suggests that they are best explained by the flux-tube-crossing scenario. Our study provides convincing evidence supporting the scenario that the solar wind consists of flux tubes where distinct plasmas reside.

Arnold, L.; Li, G.; Li, X. [Department of Physics and CSPAR, University of Alabama in Huntsville, Huntsville, AL 35899 (United States)] [Department of Physics and CSPAR, University of Alabama in Huntsville, Huntsville, AL 35899 (United States); Yan, Y., E-mail: gang.li@uah.edu [Key Laboratory of Solar Activity, National Astronomical Observatories of Chinese Academy of Sciences, Beijing 100012 (China)

2013-03-20T23:59:59.000Z

87

Innovations in Wind and Solar PV Financing  

SciTech Connect (OSTI)

There is growing national interest in renewable energy development based on the economic, environmental, and security benefits that these resources provide. Historically, greater development of our domestic renewable energy resources has faced a number of hurdles, primarily related to cost, regulation, and financing. With the recent sustained increase in the costs and associated volatility of fossil fuels, the economics of renewable energy technologies have become increasingly attractive to investors, both large and small. As a result, new entrants are investing in renewable energy and new business models are emerging. This study surveys some of the current issues related to wind and solar photovoltaic (PV) energy project financing in the electric power industry, and identifies both barriers to and opportunities for increased investment.

Cory, K.; Coughlin, J.; Jenkin, T.; Pater, J.; Swezey, B.

2008-02-01T23:59:59.000Z

88

ASYMMETRIC ELECTRON DISTRIBUTIONS IN THE SOLAR WIND  

SciTech Connect (OSTI)

A plausible mechanism responsible for producing asymmetric electron velocity distribution functions in the solar wind is investigated by means of one-dimensional electrostatic particle-in-cell (PIC) simulation. A recent paper suggests that the variation in the ion-to-electron temperature ratio influences the nonlinear wave-particle dynamics such that it results in the formation of asymmetric distributions. The present PIC code simulation largely confirms this finding, but quantitative differences between the weak turbulence formalism and the present PIC simulation are also found, suggesting the limitation of the analytical method. The inter-relationship between the asymmetric electron distribution and the ion-to-electron temperature ratio may be a new useful concept for the observation.

Rha, Kicheol; Ryu, Chang-Mo [Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of)] [Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); Yoon, Peter H. [Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742 (United States)] [Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742 (United States)

2013-09-20T23:59:59.000Z

89

Residual Energy Spectrum of Solar Wind Turbulence  

E-Print Network [OSTI]

It has long been known that the energy in velocity and magnetic field fluctuations in the solar wind is not in equipartition. In this paper, we present an analysis of 5 years of Wind data at 1 AU to investigate the reason for this. The residual energy (difference between energy in velocity and magnetic field fluctuations) was calculated using both the standard magnetohydrodynamic (MHD) normalization for the magnetic field and a kinetic version, which includes temperature anisotropies and drifts between particle species. It was found that with the kinetic normalization, the fluctuations are closer to equipartition, with a mean normalized residual energy of sigma_r = -0.19 and mean Alfven ratio of r_A = 0.71. The spectrum of residual energy, in the kinetic normalization, was found to be steeper than both the velocity and magnetic field spectra, consistent with some recent MHD turbulence predictions and numerical simulations, having a spectral index close to -1.9. The local properties of residual energy and cros...

Chen, C H K; Salem, C S; Maruca, B A

2013-01-01T23:59:59.000Z

90

COMPOSITION OF THE SOLAR CORONA, SOLAR WIND, AND SOLAR ENERGETIC PARTICLES  

SciTech Connect (OSTI)

Along with temperature and density, the elemental abundance is a basic parameter required by astronomers to understand and model any physical system. The abundances of the solar corona are known to differ from those of the solar photosphere via a mechanism related to the first ionization potential of the element, but the normalization of these values with respect to hydrogen is challenging. Here, we show that the values used by solar physicists for over a decade and currently referred to as the 'coronal abundances' do not agree with the data themselves. As a result, recent analysis and interpretation of solar data involving coronal abundances may need to be revised. We use observations from coronal spectroscopy, the solar wind, and solar energetic particles as well as the latest abundances of the solar photosphere to establish a new set of abundances that reflect our current understanding of the coronal plasma.

Schmelz, J. T. [Physics Department, University of Memphis, Memphis, TN 38152 (United States); Reames, D. V. [IPST, University of Maryland, College Park, MD 20742 (United States); Von Steiger, R. [ISSI, Hallerstrasse 6, 3012 Bern (Switzerland); Basu, S., E-mail: jschmelz@memphis.edu [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520 (United States)

2012-08-10T23:59:59.000Z

91

Turbulent heating of the corona and solar wind: the heliospheric  

E-Print Network [OSTI]

resembles magnetic lines of force Eclipse observations show the `solar corona' Thomson-scattered white light ­ photospheric light scattered from dust, solar spectrum remains ­ `zodiacal light' E corona ­ emission linesTurbulent heating of the corona and solar wind: the heliospheric dark energy problem Stuart D. Bale

92

Wind loading on solar concentrators: some general considerations  

SciTech Connect (OSTI)

A survey has been completed to examine the problems and complications arising from wind loading on solar concentrators. Wind loading is site specific and has an important bearing on the design, cost, performance, operation and maintenance, safety, survival, and replacement of solar collecting systems. Emphasis herein is on paraboloidal, two-axis tracking systems. Thermal receiver problems also are discussed. Wind characteristics are discussed from a general point of view; current methods for determining design wind speed are reviewed. Aerodynamic coefficients are defined and illustrative examples are presented. Wind tunnel testing is discussed, and environmental wind tunnels are reviewed; recent results on heliostat arrays are reviewed as well. Aeroelasticity in relation to structural design is discussed briefly. Wind loads, i.e., forces and moments, are proportional to the square of the mean wind velocity. Forces are proportional to the square of concentrator diameter, and moments are proportional to the cube of diameter. Thus, wind loads have an important bearing on size selection from both cost and performance standpoints. It is concluded that sufficient information exists so that reasonably accurate predictions of wind loading are possible for a given paraboloidal concentrator configuration, provided that reliable and relevant wind conditions are specified. Such predictions will be useful to the design engineer and to the systems engineer as well. Information is lacking, however, on wind effects in field arrays of paraboloidal concentrators. Wind tunnel tests have been performed on model heliostat arrays, but there are important aerodynamic differences between heliostats and paraboloidal dishes.

Roschke, E. J.

1984-05-01T23:59:59.000Z

93

Comparison of VLF Wave Activity in the Solar Wind During Solar Maximum and Minimum  

E-Print Network [OSTI]

second fast latitude scan (near the solar maximum) with the wave observations during the first fast Experiments (URAP) of Ulysses during its first orbit, which occurred when the solar activity was approachingComparison of VLF Wave Activity in the Solar Wind During Solar Maximum and Minimum: Ulysses

California at Berkeley, University of

94

Solar Wind Turbulence A Study of Corotating Interaction Regions at 1 AU  

E-Print Network [OSTI]

Solar Wind Turbulence A Study of Corotating Interaction Regions at 1 AU Je rey A. Tessein Department of Physics University of New Hampshire Durham, NH 03824 May 15, 2009 #12;Abstract The solar wind's rotation and the variability in the source of the solar wind, fast moving wind can crash into slow wind

95

Solar Wind Sources in the Late Declining Phase of Cycle 23: Effects of the Weak Solar Polar Field on High Speed Streams  

E-Print Network [OSTI]

Isenberg, P.A. (eds. ) Solar Wind Nine, AIP Conf. Proc. 471,AT SOLAR MINIMUM Solar Wind Sources in the Late Decliningfor their high speed solar wind streams that dominate the

2009-01-01T23:59:59.000Z

96

Altered solar wind -magnetosphere interaction at low Mach numbers: coronal mass ejections  

E-Print Network [OSTI]

1 Altered solar wind - magnetosphere interaction at low Mach numbers: coronal mass ejections Benoit fundamental alterations of the solar wind ­ magnetosphere interaction that occur during low Mach number solar wind. We first show that low Mach number solar wind conditions are often characteristic of coronal mass

Boyer, Edmond

97

Imaging the global solar wind flow in EUV Mike Gruntman,1  

E-Print Network [OSTI]

solar wind flow is based on unique emissions of the solar wind plasmas in extreme ultraviolet (EUV). [4Imaging the global solar wind flow in EUV Mike Gruntman,1 Vlad Izmodenov,2,3 and Vic Pizzo4] We advance the original concept of imaging the three-dimensional solar wind flow (Gruntman, 2001a

Gruntman, Mike

98

Excise Tax Deduction for Solar- or Wind-Powered Systems  

Broader source: Energy.gov [DOE]

In Massachusetts, businesses may deduct from net income, for state excise tax purposes, expenditures paid or incurred from the installation of any "solar or wind powered climatic control unit and...

99

Non-Residential Solar and Wind Tax Credit (Personal)  

Broader source: Energy.gov [DOE]

Arizona’s tax credit for solar and wind installations in commercial and industrial applications was established in June 2006 ([http://www.azleg.gov/legtext/47leg/2r/bills/hb2429s.pdf HB 2429]). In...

100

Wind and Solar Energy Curtailment Practices (Presentation), NREL...  

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

Wind and Solar Energy Curtailment Practices Lori Bird, Co-authors: Jaquelin Cochran, Xi Wang, NREL UVIG October 17, 2014 San Antonio, Texas NRELPR-6A20-63054 2 Goals of Project *...

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


101

Non-Residential Solar and Wind Tax Credit (Corporate)  

Broader source: Energy.gov [DOE]

Arizona’s tax credit for solar and wind installations in commercial and industrial applications was established in June 2006 ([http://www.azleg.gov/legtext/47leg/2r/bills/hb2429s.pdf HB 2429]). In...

102

Pierre's Prototype for Wind and Solar - Capitol Lake Plaza |...  

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

major components of the renovation are about to appear at the building's highest point: solar panels and wind turbines are being installed on the roof. The 80 photovoltaic (PV)...

103

Western Wind and Solar Integration Study Phase 2 (Fact Sheet)  

SciTech Connect (OSTI)

This is one-page, two-sided fact sheet presents high-level summary results of the Western Wind and Solar Integration Study Phase 2, which examined operational impacts of high penetrations of variable renewable generation in the West.

Not Available

2013-09-01T23:59:59.000Z

104

Understanding of solar wind structure might be wrong  

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

of solar wind structure might be wrong The plasma particles flowing from the Sun and blasting past the Earth might be configured more as a network of tubes than a...

105

Wind and Solar-Electric (PV) Systems Exemption  

Broader source: Energy.gov [DOE]

Minnesota excludes the value added by solar-electric (PV) systems installed after January 1, 1992 from real property taxation. In addition all real and personal property of wind-energy systems is...

106

Local Option- Solar, Wind and Biomass Energy Systems Exemption  

Broader source: Energy.gov [DOE]

Section 487 of the New York State Real Property Tax Law provides a 15-year real property tax exemption for solar, wind energy, and farm-waste energy systems constructed in New York State. As...

107

Western Wind and Solar Integration Study: Phase 2 (Presentation)  

SciTech Connect (OSTI)

This presentation summarizes the scope and results of the Western Wind and Solar Integration Study Phase 2, which examined operational impacts of high penetrations of variable renewable generation in the West.

Lew, D.; Brinkman, G.; Ibanez, E.; Lefton, S.; Kumar, N.; Venkataraman, S.; Jordan, G.

2013-09-01T23:59:59.000Z

108

The Western Wind and Solar Integration Study Phase 2  

Office of Energy Efficiency and Renewable Energy (EERE)

Greg Brinkman will present the results of the Western Wind and Solar Integration Study (WWSIS), Phase 2. This study, which follows the first phase of WWSIS, focuses on potential emissions and wear...

109

Solar and Wind Equipment Sales Tax Exemption  

Broader source: Energy.gov [DOE]

Arizona provides a sales tax exemption* for the retail sale of solar energy devices and for the installation of solar energy devices by contractors. The statutory definition of "solar energy...

110

Potential for Development of Solar and Wind Resource in Bhutan  

SciTech Connect (OSTI)

With support from the U.S. Agency for International Development (USAID), the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) produced maps and data of the wind and solar resources in Bhutan. The solar resource data show that Bhutan has an adequate resource for flat-plate collectors, with annual average values of global horizontal solar radiation ranging from 4.0 to 5.5 kWh/m2-day (4.0 to 5.5 peak sun hours per day). The information provided in this report may be of use to energy planners in Bhutan involved in developing energy policy or planning wind and solar projects, and to energy analysts around the world interested in gaining an understanding of Bhutan's wind and solar energy potential.

Gilman, P.; Cowlin, S.; Heimiller, D.

2009-09-01T23:59:59.000Z

111

Western Wind and Solar Integration Study Phase 2: Preprint  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study (WWSIS) investigates the impacts of high penetrations of wind and solar power into the Western Interconnection of the United States. WWSIS2 builds on the Phase 1 study but with far greater refinement in the level of data inputs and production simulation. It considers the differences between wind and solar power on systems operations. It considers mitigation options to accommodate wind and solar when full costs of wear-and-tear and full impacts of emissions rates are taken into account. It determines wear-and-tear costs and emissions impacts. New data sets were created for WWSIS2, and WWSIS1 data sets were refined to improve realism of plant output and forecasts. Four scenarios were defined for WWSIS2 that examine the differences between wind and solar and penetration level. Transmission was built out to bring resources to load. Statistical analysis was conducted to investigate wind and solar impacts at timescales ranging from seasonal down to 5 minutes.

Lew, D.; Brinkman, G.; Ibanez, E.; Hodge, B.-M.; King, J.

2012-09-01T23:59:59.000Z

112

How Do High Levels of Wind and Solar Impact the Grid? The Western Wind and Solar Integration Study  

SciTech Connect (OSTI)

This paper is a brief introduction to the scope of the Western Wind and Solar Integration Study (WWSIS), inputs and scenario development, and the key findings of the study.

Lew, D.; Piwko, D.; Miller, N.; Jordan, G.; Clark, K.; Freeman, L.

2010-12-01T23:59:59.000Z

113

COLLISIONLESS DAMPING AT ELECTRON SCALES IN SOLAR WIND TURBULENCE  

SciTech Connect (OSTI)

The dissipation of turbulence in the weakly collisional solar wind plasma is governed by unknown kinetic mechanisms. Two candidates have been suggested to play an important role in the dissipation, collisionless damping via wave-particle interactions and dissipation in small-scale current sheets. High resolution spacecraft measurements of the turbulent magnetic energy spectrum provide important constraints on the dissipation mechanism. The limitations of popular fluid and hybrid numerical schemes for simulation of the dissipation of solar wind turbulence are discussed, and instead a three-dimensional kinetic approach is recommended. We present a three-dimensional nonlinear gyrokinetic simulation of solar wind turbulence at electron scales that quantitatively reproduces the exponential form of the turbulent magnetic energy spectrum measured in the solar wind. A weakened cascade model that accounts for nonlocal interactions and collisionless Landau damping also quantitatively agrees with the observed exponential form. These results establish that a turbulent cascade of kinetic Alfven waves that is terminated by collisionless Landau damping is sufficient to explain the observed magnetic energy spectrum in the dissipation range of solar wind turbulence.

TenBarge, J. M.; Howes, G. G. [Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242 (United States); Dorland, W., E-mail: jason-tenbarge@uiowa.edu [Department of Physics, University of Maryland, College Park, MA 20742-3511 (United States)

2013-09-10T23:59:59.000Z

114

Solar Energy Education. Solar solutions: Reader, Part III  

SciTech Connect (OSTI)

A collection of magazine articles which focus on the subject of solar energy is presented in this booklet. This is the third of a four part series of the Solar Energy Reader books. The articles provide brief discussions on the various applications of solar energy including: heat, photovoltaics; wind, hydro, and biomass. A glossary of terms is included. (BCS)

Not Available

1981-05-01T23:59:59.000Z

115

Evaluation of Wind Loads on Solar Panels.  

E-Print Network [OSTI]

?? The current impetus for alternative energy sources is increasing the demand for solar energy technologies in Florida – the Sunshine State. Florida’s energy production… (more)

Barata, Johann

2011-01-01T23:59:59.000Z

116

Agua Caliente Wind/Solar Project at Whitewater Ranch  

SciTech Connect (OSTI)

Agua Caliente Band of Cahuilla Indians (ACBCI) was awarded a grant by the Department of Energy (DOE) to study the feasibility of a wind and/or solar renewable energy project at the Whitewater Ranch (WWR) property of ACBCI. Red Mountain Energy Partners (RMEP) was engaged to conduct the study. The ACBCI tribal lands in the Coachella Valley have very rich renewable energy resources. The tribe has undertaken several studies to more fully understand the options available to them if they were to move forward with one or more renewable energy projects. With respect to the resources, the WWR property clearly has excellent wind and solar resources. The DOE National Renewable Energy Laboratory (NREL) has continued to upgrade and refine their library of resource maps. The newer, more precise maps quantify the resources as among the best in the world. The wind and solar technology available for deployment is also being improved. Both are reducing their costs to the point of being at or below the costs of fossil fuels. Technologies for energy storage and microgrids are also improving quickly and present additional ways to increase the wind and/or solar energy retained for later use with the network management flexibility to provide power to the appropriate locations when needed. As a result, renewable resources continue to gain more market share. The transitioning to renewables as the major resources for power will take some time as the conversion is complex and can have negative impacts if not managed well. While the economics for wind and solar systems continue to improve, the robustness of the WWR site was validated by the repeated queries of developers to place wind and/or solar there. The robust resources and improving technologies portends toward WWR land as a renewable energy site. The business case, however, is not so clear, especially when the potential investment portfolio for ACBCI has several very beneficial and profitable alternatives.

Hooks, Todd; Stewart, Royce

2014-12-16T23:59:59.000Z

117

On the response of polar cap dynamics to its solar wind and magnetotail drivers at high levels of geomagnetic activity  

E-Print Network [OSTI]

polar cap potential by intense solar wind electric fields,potentials measured with Super Dual Auroral Radar Network during quasi-steady solar wind andelectric potential as a function of solar wind parameters by

Gao, Ye

2012-01-01T23:59:59.000Z

118

Electron energy transport in the solar wind: Ulysses observations  

SciTech Connect (OSTI)

Previous analysis suggests that the whistler heat flux instability is responsible for the regulation of the electron heat flux of the solar wind. For an interval of quiescent solar wind during the in-ecliptic phase of the Ulysses mission, the plasma wave data in the whistler frequency regime are compared to the predictions of the whistler heat flux instability model. The data is well constrained by the predicted upper bound on the electron heat flux and a clear correlation between wave activity and electron heat flux dissipation is observed.

Scime, Earl E.; Gary, S. Peter; Phillips, John L.; Balogh, Andre; Lengyel-Frey, Denise [West Virginia University, Morgantown, West Virginia (United States); Los Alamos National Laboratory, Los Alamos, New Mexico (United States); Blackett Laboratory, Imperial College, London (United Kingdom); University of Maryland, College Park, Maryland (United States)

1996-07-20T23:59:59.000Z

119

Compressive turbulent cascade and heating in the solar wind  

SciTech Connect (OSTI)

A turbulent energy cascade has been recently identified in high-latitude solar wind data samples by using a Yaglom-like relation. However, analogous scaling law, suitably modified to take into account compressible fluctuations, has been observed in a much more extended fraction of the same data set recorded by the Ulysses spacecraft. Thus, it seems that large scale density fluctuations, despite their low amplitude, play a major role in the basic scaling properties of turbulence. The compressive turbulent cascade, moreover, seems to be able to supply the energy needed to account for the local heating of the non-adiabatic solar wind.

Marino, R. [Dipartimento di Fisica, Universita della Calabria, Ponte Bucci 31C, I-87036 Rende (Italy); University of Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, B.P. 4229, 06304 Nice Cedex 4 (France); Sorriso-Valvo, L. [Liquid Crystal Laboratory, INFM/CNR, Ponte Bucci 33B, I-87036 Rende (Italy); Carbone, V. [Dipartimento di Fisica, Universita della Calabria, Ponte Bucci 31C, I-87036 Rende (Italy); Noullez, A. [University of Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, B.P. 4229, 06304 Nice Cedex 4 (France); Bruno, R. [INAF-Istituto Fisica Spazio Interplanetario, Rome (Italy)

2010-03-25T23:59:59.000Z

120

The turbulent cascade and proton heating in the solar wind during solar minimum  

SciTech Connect (OSTI)

Solar wind measurements at 1 AU during the recent solar minimum and previous studies of solar maximum provide an opportunity to study the effects of the changing solar cycle on in situ heating. Our interest is to compare the levels of activity associated with turbulence and proton heating. Large-scale shears in the flow caused by transient activity are a source that drives turbulence that heats the solar wind, but as the solar cycle progresses the dynamics that drive the turbulence and heat the medium are likely to change. The application of third-moment theory to Advanced Composition Explorer (ACE) data gives the turbulent energy cascade rate which is not seen to vary with the solar cycle. Likewise, an empirical heating rate shows no significan changes in proton heating over the cycle.

Coburn, Jesse T.; Smith, Charles W.; Vasquez, Bernard J. [Physics Department and Space Science Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, New Hampshire (United States); Stawarz, Joshua E. [Department of Astrophysical and Planetary Sciences, University of Colorado at Boulder, Boulder, Colorado (United States); Forman, Miriam A. [Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York (United States)

2013-06-13T23:59:59.000Z

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


121

ACCELERATION OF THE SOLAR WIND BY ALFVEN WAVE PACKETS  

SciTech Connect (OSTI)

A scale separation kinetic model of the solar wind acceleration is presented. The model assumes an isotropic Maxwellian distribution of protons and a constant influx of outward propagating Alfven waves with a single exponent Kolmogorov-type spectrum at the base of a coronal acceleration region ({approx}2 R {sub Sun }). Our results indicate that nonlinear cyclotron resonant interaction taking energy from Alfven waves and depositing it into mostly perpendicular heating of protons in initially weakly expanding plasma in a spherically non-uniform magnetic field is able to produce the typical fast solar wind velocities for the typical plasma and wave conditions after expansion to about 5-10 solar radii R {sub Sun }. The acceleration model takes into account the gravity force and the ambipolar electric field, as well as the mirror force, which plays the most important role in driving the solar wind acceleration. Contrary to the recent claims of Isenberg, the cold plasma dispersion only slightly slows down the acceleration and actually helps in obtaining the more realistic fast solar wind speeds.

Galinsky, V. L.; Shevchenko, V. I., E-mail: vit@ucsd.edu [ECE Department, UC San Diego, MC 407, La Jolla, CA 92093-0407 (United States)

2013-01-20T23:59:59.000Z

122

A new method to estimate annual solar wind parameters and contributions of different solar wind structures to geomagnetic activity  

E-Print Network [OSTI]

In this paper, we study two sets of local geomagnetic indices from 26 stations using the principal component (PC) and the independent component (IC) analysis methods. We demonstrate that the annually averaged indices can be accurately represented as linear combinations of two first components with weights systematically depending on latitude. We show that the annual contributions of coronal mass ejections (CMEs) and high speed streams (HSSs) to geomagnetic activity are highly correlated with the first and second IC. The first and second ICs are also found to be very highly correlated with the strength of the interplanetary magnetic field (IMF) and the solar wind speed, respectively, because solar wind speed is the most important parameter driving geomagnetic activity during HSSs while IMF strength dominates during CMEs. These results help in better understanding the long-term driving of geomagnetic activity and in gaining information about the long-term evolution of solar wind parameters and the different sol...

Holappa, Lauri; Asikainen, Timo

2015-01-01T23:59:59.000Z

123

How Do High Levels of Wind and Solar Impact the Grid? The Western...  

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

How Do High Levels of Wind and Solar Impact the Grid? The Western Wind and Solar Integration Study Debra Lew National Renewable Energy Laboratory Dick Piwko, Nick Miller, Gary...

124

E-Print Network 3.0 - ancient solar wind Sample Search Results  

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

solar wind Search Powered by Explorit Topic List Advanced Search Sample search results for: ancient solar wind Page: << < 1 2 3 4 5 > >> 1 Three-dimensional multifluid simulations...

125

The Western Wind and Solar Integration Study Phase 2 (Fact Sheet...  

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

The Western Wind and Solar Integration Study Phase 2 An examination of how wind and solar power affect operations, costs, and emissions from fossil-fueled generators The electric...

126

U.S. Virgin Islands- Solar and Wind Easements and Rights Laws  

Broader source: Energy.gov [DOE]

In the U.S. Virgin Islands, the owner of a solar or wind-energy system is permitted to negotiate for assurance of continued access to the system’s energy source. "Solar or wind-energy system" is...

127

Western Wind and Solar Integration Study: Executive Summary, (WWSIS) May 2010  

SciTech Connect (OSTI)

This report provides a summary of background, approach, and findings of the Western Wind and Solar Integration Study (WWSIS).

R. Piwko; K. Clark; L. Freeman; G. Jordan; N. Miller

2010-05-01T23:59:59.000Z

128

Grand Traverse Band Renewable Energy Feasibility Study in Wind, Biomass and Solar  

SciTech Connect (OSTI)

Renewable Energy Feasibility Study for wind, biomass, solar on the Grand Traverse Band tribal lands from 2005 - 2008

Suzanne McSawby, Project Director

2008-12-31T23:59:59.000Z

129

Solar and Wind Energy Resource Assessment (SWERA)  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar PowerstoriesNrelPartnerTypePonsa,Home Aimeebailey's pictureWiki Page Solar and

130

VENUS EXPRESS STUDIES PERTAINING TO THE LOSS OF THE VENUS ATMOSPHERE BY ITS INTERACTION WITH THE SOLAR WIND  

E-Print Network [OSTI]

WITH THE SOLAR WIND C. T. Russell, T. L. Zhang, M. Delva, S. Barabash, J. G. Luhmann, and H. Y. Wei The solar effectively excludes the solar wind from the planetary atmosphere but that the solar wind can still erode is consistent with the deflection of the solar wind plasma by the magnetic barrier that in turn shields

California at Berkeley, University of

131

The genesis solar-wind sample return mission  

SciTech Connect (OSTI)

The compositions of the Earth's crust and mantle, and those of the Moon and Mars, are relatively well known both isotopically and elementally. The same is true of our knowledge of the asteroid belt composition, based on meteorite analyses. Remote measurements of Venus, the Jovian atmosphere, and the outer planet moons, have provided some estimates of their compositions. The Sun constitutes a large majority, > 99%, of all the matter in the solar system. The elemental composition of the photosphere, the visible 'surface' of the Sun, is constrained by absorption lines produced by particles above the surface. Abundances for many elements are reported to the {+-}10 or 20% accuracy level. However, the abundances of other important elements, such as neon, cannot be determined in this way due to a relative lack of atomic states at low excitation energies. Additionally and most importantly, the isotopic composition of the Sun cannot be determined astronomically except for a few species which form molecules above sunspots, and estimates derived from these sources lack the accuracy desired for comparison with meteoritic and planetary surface samples measured on the Earth. The solar wind spreads a sample of solar particles throughout the heliosphere, though the sample is very rarified: collecting a nanogram of oxygen, the third most abundant element, in a square centimeter cross section at the Earth's distance from the Sun takes five years. Nevertheless, foil collectors exposed to the solar wind for periods of hours on the surface of the Moon during the Apollo missions were used to determine the helium and neon solar-wind compositions sufficiently to show that the Earth's atmospheric neon was significantly evolved relative to the Sun. Spacecraft instruments developed subsequently have provided many insights into the composition of the solar wind, mostly in terms of elemental composition. These instruments have the advantage of observing a number of parameters simultaneously, including charge state distributions, velocities, and densities, all of which have been instrumental in characterizing the nature of the solar wind. However, these instruments have lacked the ability to make large dynamic range measurements of adjacent isotopes (i.e., {sup 17}O/{sup 16}O {approx} 2500) or provide the permil (tenths of percent) accuracy desirable for comparison with geochemical isotopic measurements. An accurate knowledge of the solar and solar-wind compositions helps to answer important questions across a number of disciplines. It aids in understanding the acceleration mechanisms of the solar wind, gives an improved picture of the charged particle environment near the photosphere, it constrains processes within the Sun over its history, and it provides a database by which to compare differences among planetary systems with the solar system's starting composition, providing key information on planetary evolution. For example, precise knowledge of solar isotopic and elemental compositions of volatile species in the Sun provides a baseline for models of atmospheric evolution over time for Earth, Venus, and Mars. Additionally, volatile and chemically active elements such as C, H, O, N, and S can tell us about processes active during the evolution of the solar nebula. A classic example of this is the oxygen isotope system. In the 1970s it was determined that the oxygen isotopic ratio in refractory inclusions in primitive meteorites was enriched {approx}4% in {sup 16}O relative to the average terrestrial, lunar, and thermally processed meteorite materials. In addition, all processed solar-system materials appeared to each have a unique oxygen isotopic composition (except the Moon and Earth, which are thought to be formed from the same materials), though differences are in the fraction of a percent range, much smaller than the refractory material {sup 16}O enrichment. Several theories were developed over the years to account for the oxygen isotope heterogeneity, each theory predicting a different solar isotopic composition and each invoking a differ

Wiens, Roger C [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

132

Global and multi-scale features of solar wind-magnetosphere coupling: From modeling to forecasting  

E-Print Network [OSTI]

and substorms; 2784 Magnetospheric Physics: Solar wind/magnetosphere interactions; 3210 Mathematical Geophysics in the solar wind-magnetosphere interaction, de- veloping first principles models that encompass allGlobal and multi-scale features of solar wind-magnetosphere coupling: From modeling to forecasting

Sitnov, Mikhail I.

133

THE SOLAR WIND INTERACTION WITH UNMAGNETIZED PLANETS: A TUTORIAL J. G. Luhmann  

E-Print Network [OSTI]

THE SOLAR WIND INTERACTION WITH UNMAGNETIZED PLANETS: A TUTORIAL J. G. Luhmann Institute of solar wind origin is transported through the ionopause and distributed within the ionosphere theorists and observationalists. The relative strength of the solar wind and ionospheric pressures at Mars

California at Berkeley, University of

134

The Solar Wind: Probing the Heliosphere with Multiple Spacecraft John D. Richardson  

E-Print Network [OSTI]

1 The Solar Wind: Probing the Heliosphere with Multiple Spacecraft John D. Richardson Center of the Voyager spacecraft in the outer heliosphere, Ulysses at high latitudes, and multiple solar wind monitors near Earth provides a unique opportunity to study the global structure and evolution of the solar wind

Richardson, John

135

Solar Wind and Interplanetary Magnetic Field: A Tutorial C. T. Russell  

E-Print Network [OSTI]

Solar Wind and Interplanetary Magnetic Field: A Tutorial C. T. Russell Institute of Geophysics at the center of the sun to its radiation into space by the photosphere, but most importantly for the solar wind controls the properties of the solar wind. In this tutorial review we examine the properties of the fields

Russell, Christopher T.

136

A TRANSONIC COLLISIONLESS MODEL OF THE SOLAR WIND I. Zouganelis,1  

E-Print Network [OSTI]

: corona 1. INTRODUCTION Most cosmic bodies eject matter into space, but the solar wind is the first and: First, the particle VDFs might not be Maxwellians at the base of the solar wind. Second, the particleA TRANSONIC COLLISIONLESS MODEL OF THE SOLAR WIND I. Zouganelis,1 M. Maksimovic,1 N. Meyer-Vernet,1

Meyer-Vernet, Nicole

137

Effect of solar wind pressure pulses on the size and strength of the auroral oval  

E-Print Network [OSTI]

Effect of solar wind pressure pulses on the size and strength of the auroral oval A. Boudouridis, E. [1] It has recently been found that solar wind dynamic pressure changes can dramatically affect solar wind dynamic pressure increases on the location, size, and intensity of the auroral oval using

Lummerzheim, Dirk

138

Enhanced solar wind geoeffectiveness after a sudden increase in dynamic pressure during southward IMF orientation  

E-Print Network [OSTI]

Enhanced solar wind geoeffectiveness after a sudden increase in dynamic pressure during southward increase in solar wind pressure results in poleward expansion of the auroral oval and closing of the polar show that southward IMF conditions combined with high solar wind dynamic pressure immediately after

Lummerzheim, Dirk

139

Impact of the solar wind dynamic pressure on the Region 2 field-aligned currents  

E-Print Network [OSTI]

Impact of the solar wind dynamic pressure on the Region 2 field-aligned currents S. Nakano,1,2 G and the solar wind dynamic pressure is investigated using magnetic field data from Defense Meteorological in the magnetosphere varies with the solar wind dynamic pressure. Therefore, we can expect that the Region 2 currents

Higuchi, Tomoyuki

140

Title: Feasibility Study for 20 MW Hybrid Solar and Wind Park in Colombia  

E-Print Network [OSTI]

the realistic ROI for a potential 20 MW solar/wind farm. The information generated will be sufficiently detailed to present the expected energy performance and economics of a 20 MW solar/wind farm to potential investors1 of 2 Title: Feasibility Study for 20 MW Hybrid Solar and Wind Park in Colombia Principal

Johnson, Eric E.

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


141

Discrepancies in the Prediction of Solar Wind using Potential Field Source Surface Model: An  

E-Print Network [OSTI]

Discrepancies in the Prediction of Solar Wind using Potential Field Source Surface Model. This inverse relation has been made use of in the prediction of solar wind speed at 1 AU using a potential between the magnetic flux tube expansion factor (FTE) at the source surface and the solar wind speed

Zhao, Xuepu

142

Assessment of existing studies of wind loading on solar collectors  

SciTech Connect (OSTI)

In developing solar collectors, wind loading is the major structural design consideration. Wind loading investigations have focused on establishing safe bounds for steady state loading and verifying rational but initial and conservative design approaches for the various solar collector concepts. As such, the effort has been very successful, and has contributed greatly to both the recognition and qualitative understanding of many of the physical phenomena involved. Loading coefficients corresponding to mean wind velocities have been derived in these prior studies to measure the expected structural loading on the various solar collectors. Current design and testing procedures for wind loading are discussed. The test results corresponding to numerous wind tests on heliostats, parabolic troughs, parabolic dishes, and field mounted photovoltaic arrays are discussed and the applicability of the findings across the various technologies is assessed. One of the most significant consistencies in the data from all the technologies is the apparent benefit provided by fences and field shielding. Taken in toto, these data show that load reductions of three or possibly more seem feasible, though a more thorough understanding of the phenomena involved must be attained before this benefit can be realized. It is recommended that the required understanding be developed to take advantage of this benefit and that field tests be conducted to correlate with both analyses and tests.

Murphy, L. M.

1981-02-01T23:59:59.000Z

143

The interaction between the Moon and the solar wind  

E-Print Network [OSTI]

We study the interaction between the Moon and the solar wind using a three-dimensional hybrid plasma solver. The proton fluxes and electromagnetical fields are presented for typical solar wind conditions with different magnetic field directions. Several features are consistent with a fluid interaction, e.g., the presence of a rarefaction cone, and an increased magnetic field in the wake. There are however several kinetic features of the interaction. We find kinks in the magnetic field at the wake boundary. There are also density and magnetic field variations in the far wake, maybe from an ion beam instability related to the wake refill. The results are compared to observations by the WIND spacecraft during a wake crossing. The model magnetic field and ion velocities are in agreement with the measurements. The density and the electron temperature in the central wake are not as well captured by the model, probably from the lack of electron physics in the hybrid model.

Holmström, M; Futaana, Y; Nilsson, H

2011-01-01T23:59:59.000Z

144

A.W. Blakers, 'Solar and Wind Electricity in Australia', Australian Journal of Environmental Management, Vol 7, pp 223-236, 2000 SOLAR AND WIND ELECTRICITY IN AUSTRALIA  

E-Print Network [OSTI]

environmental impact associated with the construction of what amounts to a coastal hydro scheme. Solar energy.blakers@anu.edu.au Abstract This paper examines the renewable generation of electricity in Australia from photovoltaics (PV environmental impacts even when deployed on very large scales. They are the only fully sustainable technologies

145

Western Wind and Solar Integration Study: Hydropower Analysis  

SciTech Connect (OSTI)

The U.S. Department of Energy's (DOE) study of 20% Wind Energy by 2030 was conducted to consider the benefits, challenges, and costs associated with sourcing 20% of U.S. energy consumption from wind power by 2030. This study found that with proactive measures, no insurmountable barriers were identified to meet the 20% goal. Following this study, DOE and the National Renewable Energy Laboratory (NREL) conducted two more studies: the Eastern Wind Integration and Transmission Study (EWITS) covering the eastern portion of the U.S., and the Western Wind and Solar Integration Study (WWSIS) covering the western portion of the United States. The WWSIS was conducted by NREL and research partner General Electric (GE) in order to provide insight into the costs, technical or physical barriers, and operational impacts caused by the variability and uncertainty of wind, photovoltaic, and concentrated solar power when employed to serve up to 35% of the load energy in the WestConnect region (Arizona, Colorado, Nevada, New Mexico, and Wyoming). WestConnect is composed of several utility companies working collaboratively to assess stakeholder and market needs to and develop cost-effective improvements to the western wholesale electricity market. Participants include the Arizona Public Service, El Paso Electric Company, NV Energy, Public Service of New Mexico, Salt River Project, Tri-State Generation and Transmission Cooperative, Tucson Electric Power, Xcel Energy and the Western Area Power Administration.

Acker, T.; Pete, C.

2012-03-01T23:59:59.000Z

146

Small solar wind transients: Stereo-A observations in 2009  

SciTech Connect (OSTI)

Year 2009 was the last year of a long and pronounced solar activity minimum. In this year the solar wind in the inner heliosphere was for 90% of the time slow (< 450 km s{sup -1}) and with a weaker magnetic field strength compared to the previous solar minimum 1995-1996. We choose this year to present the results of a systematic search for small solar wind transients (STs) observed by the STEREO-Ahead (ST-A) probe. The data are from the PLASTIC and IMPACT instrument suites. By 'small' we mean a duration from {approx}1 to 12 hours. The parameters we search for to identify STs are (i) the total field strength, (ii) the rotation of the magnetic field vector, (iii) its smoothness, (iv) proton temperature, (v) proton beta, and (vi) Alfven Mach number. We find 45 examples. The STs have an average duration of {approx}4 hours. Ensemble averages of key quantities are: (i) maximum B = 7.01 nT; (ii) proton {beta}= 0.18; (iii) proton thermal speed = 20.8 km s{sup -1}; and (iv) Alfven Mach number = 6.13. No distinctive feature is found in the pitch angle distributions of suprathermal electrons. Our statistical results are compared with those of STs observed near Earth by Wind during 2009.

Yu, W.; Farrugia, C. J.; Galvin, A. B.; Simunac, K. D. C.; Popecki, M. A.; Lugaz, N. [Space Science Center, University of New Hampshire, Durham, NH 03824 (United States); Kilpua, E. K. J. [Dept. of Physics, Division of Geophysics and Astronomy, University of Helsinki (Finland); Moestl, C. [Institute of Physics, University of Graz, 8010 Graz, Austria and Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Luhmann, J. G. [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Opitz, A.; Sauvaud, J.-A. [Institut de Recherche en Astrophysique et Planetologie (CNRS-UPS), Universite de Toulouse, F-31038, Toulouse (France)

2013-06-13T23:59:59.000Z

147

Assessing the Evolution of the Solar Wind through the Spectrum of Velocity Fluctuations from 1 5 AU.  

E-Print Network [OSTI]

;2 Abstract: Turbulent processes occur in the solar wind and contribute to solar wind evolution and heating assistance he's provided. #12;4 Contents 1. The Solar Wind 1.1 Early Remote Observations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 #12;5 Chapter 1 The Solar Wind 1.1 Early Remote Observations The earliest observations of the sun

148

Predicted Impacts of Proton Temperature Anisotropy on Solar Wind Turbulence  

E-Print Network [OSTI]

Particle velocity distributions measured in the weakly collisional solar wind are frequently found to be non-Maxwellian, but how these non-Maxwellian distributions impact the physics of plasma turbulence in the solar wind remains unanswered. Using numerical solutions of the linear dispersion relation for a collisionless plasma with a bi-Maxwellian proton velocity distribution, we present a unified framework for the four proton temperature anisotropy instabilities, identifying the associated stable eigenmodes, highlighting the unstable region of wavevector space, and presenting the properties of the growing eigenfunctions. Based on physical intuition gained from this framework, we address how the proton temperature anisotropy impacts the nonlinear dynamics of the \\Alfvenic fluctuations underlying the dominant cascade of energy from large to small scales and how the fluctuations driven by proton temperature anisotropy instabilities interact nonlinearly with each other and with the fluctuations of the large-scal...

Klein, Kristopher G

2015-01-01T23:59:59.000Z

149

Residual energy in magnetohydrodynamic turbulence and in the solar wind  

E-Print Network [OSTI]

Recent observations indicate that kinetic and magnetic energies are not in equipartition in the solar wind turbulence. Rather, magnetic fluctuations are more energetic and have somewhat steeper energy spectrum compared to the velocity fluctuations. This leads to the presence of the so-called residual energy E_r=E_v-E_b in the inertial interval of turbulence. This puzzling effect is addressed in the present paper in the framework of weak turbulence theory. Using a simple model of weakly colliding Alfv\\'en waves, we demonstrate that the kinetic-magnetic equipartition indeed gets broken as a result of nonlinear interaction of Alfv\\'en waves. We establish that magnetic energy is indeed generated more efficiently as a result of these interactions, which proposes an explanation for the solar wind observations.

Stanislav Boldyrev; Jean Carlos Perez; Vladimir Zhdankin

2011-08-30T23:59:59.000Z

150

innovati nNREL Confirms Large Potential for Grid Integration of Wind, Solar Power  

E-Print Network [OSTI]

innovati nNREL Confirms Large Potential for Grid Integration of Wind, Solar Power To fully harvest a database of potential wind power sites and detailed, time-dependent estimates of the power that would the nation's bountiful wind and solar resources, it is critical to know how much electrical power from

151

X-RAY EMISSION FROM PLANETS AND COMETS: RELATIONSHIP WITH SOLAR X-RAYS AND SOLAR WIND  

E-Print Network [OSTI]

with the occurrence of solar X-ray flare, when light travel time delay is accounted, suggesting that X-rays fromX-RAY EMISSION FROM PLANETS AND COMETS: RELATIONSHIP WITH SOLAR X-RAYS AND SOLAR WIND ANIL BHARDWAJ Flight center, Greenbelt, MD 20771, USA Scattering of solar X-ray radiation mainly produces the non

Ã?stgaard, Nikolai

152

Propagation of three--dimensional Alfv'en waves in a stratified, thermally conducting solar wind  

E-Print Network [OSTI]

Propagation of three--dimensional Alfv'en waves in a stratified, thermally conducting solar wind S to the well--known thermal expansion of the solar corona [Parker, 1958, 1963, 1991]. In particular Alfv'en waves in the solar atmosphere and wind, taking into account relevant physical effects

153

THE GENESIS SOLAR-WIND COLLECTOR MATERIALS A. J. G. Jurewicz1  

E-Print Network [OSTI]

THE GENESIS SOLAR-WIND COLLECTOR MATERIALS A. J. G. Jurewicz1 , D. S. Burnett2 , R. C. Wiens3 , T. #12;THE GENESIS SOLAR-WIND COLLECTOR MATERIALS Abstract. Genesis (NASA Discovery Mission #5) is a sample return mission. Collectors comprised of ultra-high purity materials will be exposed to the solar

154

Corotating solar wind streams and recurrent geomagnetic activity: Bruce T. Tsurutani,1,2  

E-Print Network [OSTI]

´n waves is the solar wind energy transfer mechanism. The acceleration of relativistic electrons occurs Laboratory, Oxfordshire, UK. 6 Solar-Terrestrial Environment Laboratory, Nagoya University, Toyo- kawa, JapanCorotating solar wind streams and recurrent geomagnetic activity: A review Bruce T. Tsurutani,1

Bergen, Universitetet i

155

Complementary Effect of Wind and Solar Energy Sources in a Microgrid  

E-Print Network [OSTI]

Complementary Effect of Wind and Solar Energy Sources in a Microgrid M. A. Barik, Student Member. Index Terms--Microgrid, renewable energy sources, reactive power mismatch, solar integration, voltage-mass energy, etc. Of them wind and solar energy is broadly used for their characteristics. This paper presents

Pota, Himanshu Roy

156

The structure and origin of magnetic clouds in the solar wind V. Bothmer1  

E-Print Network [OSTI]

The structure and origin of magnetic clouds in the solar wind V. Bothmer1 * and R. Schwenn2 1 Space-forward interplanetary shock waves, supporting the close association between MCs and SMEs (solar mass ejections). Seven in the surrounding solar wind. Minimum variance analysis (MVA) showed that MCs can best be described as large- scale

Boyer, Edmond

157

Using Solar Business Models to Expand the Distributed Wind Market (Presentation)  

SciTech Connect (OSTI)

This presentation to attendees at Wind Powering America's All-States Summit in Chicago describes business models that were responsible for rapid growth in the solar industry and that may be applicable to the distributed wind industry as well.

Savage, S.

2013-05-01T23:59:59.000Z

158

Wind Tunnel Tests of Parabolic Trough Solar Collectors: March 2001--August 2003  

SciTech Connect (OSTI)

Conducted extensive wind-tunnel tests on parabolic trough solar collectors to determine practical wind loads applicable to structural design for stress and deformation, and local component design for concentrator reflectors.

Hosoya, N.; Peterka, J. A.; Gee, R. C.; Kearney, D.

2008-05-01T23:59:59.000Z

159

TURBULENT HEATING OF THE DISTANT SOLAR WIND BY INTERSTELLAR PICKUP PROTONS IN A DECELERATING FLOW  

E-Print Network [OSTI]

Previous models of solar wind heating by interstellar pickup proton-driven turbulence have assumed that the wind speed is a constant in heliocentric radial position. However, the same pickup process, which is taken to ...

Isenberg, Philip A.

160

Investigating the Correlation Between Wind and Solar Power Forecast Errors in the Western Interconnection: Preprint  

SciTech Connect (OSTI)

Wind and solar power generations differ from conventional energy generation because of the variable and uncertain nature of their power output. This variability and uncertainty can have significant impacts on grid operations. Thus, short-term forecasting of wind and solar generation is uniquely helpful for power system operations to balance supply and demand in an electricity system. This paper investigates the correlation between wind and solar power forecasting errors.

Zhang, J.; Hodge, B. M.; Florita, A.

2013-05-01T23:59:59.000Z

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


161

Production of Wind or Solar Energy on School and Public Lands (Nebraska)  

Broader source: Energy.gov [DOE]

These regulations govern the implementation and development of wind and solar resources on lands under the jurisdiction of the Board of Educational Lands and Funds

162

Operation of Concentrating Solar Power Plants in the Western Wind and Solar Integration Phase 2 Study  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study (WWSIS) explores various aspects of the challenges and impacts of integrating large amounts of wind and solar energy into the electric power system of the West. The phase 2 study (WWSIS-2) is one of the first to include dispatchable concentrating solar power (CSP) with thermal energy storage (TES) in multiple scenarios of renewable penetration and mix. As a result, it provides unique insights into CSP plant operation, grid benefits, and how CSP operation and configuration may need to change under scenarios of increased renewable penetration. Examination of the WWSIS-2 results indicates that in all scenarios, CSP plants with TES provides firm system capacity, reducing the net demand and the need for conventional thermal capacity. The plants also reduced demand during periods of short-duration, high ramping requirements that often require use of lower efficiency peaking units. Changes in CSP operation are driven largely by the presence of other solar generation, particularly PV. Use of storage by the CSP plants increases in the higher solar scenarios, with operation of the plant often shifted to later in the day. CSP operation also becomes more variable, including more frequent starts. Finally, CSP output is often very low during the day in scenarios with significant PV, which helps decrease overall renewable curtailment (over-generation). However, the configuration studied is likely not optimal for High Solar Scenario implying further analysis of CSP plant configuration is needed to understand its role in enabling high renewable scenarios in the Western United States.

Denholm, P.; Brinkman, G.; Lew, D.; Hummon, M.

2014-05-01T23:59:59.000Z

163

Reconnection outflow generated turbulence in the solar wind  

E-Print Network [OSTI]

Petschek-type time-dependent reconnection (TDR) and quasi-stationary reconnection (QSR) models are considered to understand reconnection outflow structures and the features of the associated locally generated turbulence in the solar wind. We show that the outflow structures, such as discontinuites, Kelvin-Helmholtz (KH) unstable flux tubes or continuous space filling flows cannot be distinguished from one-point WIND measurements. In both models the reconnection outflows can generate more or less spatially extended turbulent boundary layers (TBDs). The structure of an unique extended reconnection outflow is investigated in detail. The analysis of spectral scalings and break locations show that reconnection outflows can control the local field and plasma conditions which may play in favor of one or another turbulent dissipation mechanisms with their characteristic scales and wavenumbers.

Vörös, Z; Semenov, V S; Zaqarashvili, T V; Bruno, R; Khodachenko, M

2014-01-01T23:59:59.000Z

164

The solar wind interaction with Mars: Recent progress and future directions The Sun has a powerful influence on planetary atmospheres.  

E-Print Network [OSTI]

Editorial The solar wind interaction with Mars: Recent progress and future directions The Sun has field, because the solar wind can interact directly with the upper atmo- sphere. Neutral particles in the upper atmosphere are ionized by solar photons and through interactions with solar wind charged particles

California at Berkeley, University of

165

Solar and Wind Resource Assessments for Afghanistan and Pakistan  

SciTech Connect (OSTI)

The U.S. National Renewable Energy Laboratory (NREL) has recently completed the production of high-resolution wind and solar energy resource maps and related data products for Afghanistan and Pakistan. The resource data have been incorporated into a geospatial toolkit (GsT), which allows the user to manipulate the resource information along with country-specific geospatial information such as highway networks, power facilities, transmission corridors, protected land areas, etc. The toolkit allows users to then transfer resource data for specific locations into NREL's micropower optimization model known as HOMER.

Renne, D. S.; Kelly, M.; Elliott, D.; George, R.; Scott, G.; Haymes, S.; Heimiller, D.; Milbrandt, A.; Cowlin, S.; Gilman, P.; Perez, R.

2007-01-01T23:59:59.000Z

166

Solar/Wind Access Policy | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-g GrantAtlas (PACA Region - France) JumpBeginnerThinSolar/Wind Access

167

Gold SolarWind GmbH | Open Energy Information  

Open Energy Info (EERE)

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

168

Edison Solar & Wind Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump37. It is classified asThisEcoGrid EUEdgecombe-MartinEdgewoodSolar & Wind

169

Designing of Hybrid Power Generation System using Wind energy- Photovoltaic Solar energy- Solar energy with Nanoantenna  

E-Print Network [OSTI]

All the natural wastage energies are used for production of Electricity. Thus, the Electrical Power or Electricity is available with a minimum cost and pollution free to anywhere in the world at all times. This process reveals a unique step in electricity generation and availability from natural resources without hampering the ecological balance. This paper describes a new and evolving Electrical Power Generation System by integrating simultaneously photovoltaic Solar Energy, solar Energy with Nano-antenna, Wind Energy and non conventional energy sources. We can have an uninterrupted power supply irrespective of the natural condition without any sort of environmental pollution. Moreover this process yields the least production cost for electricity generation. Utilization of lightning energy for generation of electricity reveals a new step. The set-up consists of combination of photo-voltaic solar-cell array & Nano-anteena array, a mast mounted wind generator, lead-acid storage batteries, an inverter unit to convert DC power to AC power, electrical lighting loads and electrical heating loads, several fuse and junction boxes and associated wiring, and test instruments for measuring voltages, currents, power factors, and harmonic contamination data throughout the system. This hybrid solar-wind power generating system will extensively use in the Industries and also in external use like home appliance.

170

The Solar Wind Charge-Exchange Production Factor for Hydrogen  

E-Print Network [OSTI]

The production factor, or broad band averaged cross-section, for solar wind charge-exchange with hydrogen producing emission in the ROSAT 1/4 keV (R12) band is $3.8\\pm0.2\\times10^{-20}$ count degree$^{-2}$ cm$^4$. This value is derived from a comparison of the Long-Term (background) Enhancements in the ROSAT All-Sky Survey with magnetohysdrodynamic simulations of the magnetosheath. This value is 1.8 to 4.5 times higher than values derived from limited atomic data, suggesting that those values may be missing a large number of faint lines. This production factor is important for deriving the exact amount of 1/4 keV band flux that is due to the Local Hot Bubble, for planning future observations in the 1/4 keV band, and for evaluating proposals for remote sensing of the magnetosheath. The same method cannot be applied to the 3/4 keV band as that band, being composed primarily of the oxygen lines, is far more sensitive to the detailed abundances and ionization balance in the solar wind. We also show, incidentally,...

Kuntz, K D; Collier, M R; Connor, H K; Cravens, T E; Koutroumpa, D; Porter, F S; Robertson, I P; Sibeck, D G; Snowden, S L; Thomas, N E; Wash, B M

2015-01-01T23:59:59.000Z

171

Scaling of the electron dissipation range of solar wind turbulence  

E-Print Network [OSTI]

Electron scale solar wind turbulence has attracted great interest in recent years. Clear evidences have been given from the Cluster data that turbulence is not fully dissipated near the proton scale but continues cascading down to the electron scales. However, the scaling of the energy spectra as well as the nature of the plasma modes involved at those small scales are still not fully determined. Here we survey 10 years of the Cluster search-coil magnetometer (SCM) waveforms measured in the solar wind and perform a statistical study of the magnetic energy spectra in the frequency range [$1, 180$]Hz. We show that a large fraction of the spectra exhibit clear breakpoints near the electon gyroscale $\\rho_e$, followed by steeper power-law like spectra. We show that the scaling below the electron breakpoint cannot be determined unambiguously due to instrumental limitations that will be discussed in detail. We compare our results to recent ones reported in other studies and discuss their implication on the physical...

Sahraoui, F; De Patoul, J; Belmont, G; Goldstein, M L; Retino, A; Robert, P; Cornilleau-Wehrlin, N; Canu, P

2013-01-01T23:59:59.000Z

172

Integrating High Penetrations of Solar in the Western United States: Results of the Western Wind and Solar Integration Study Phase 2 (Poster)  

SciTech Connect (OSTI)

This poster presents a summary of the results of the Western Wind and Solar Integration Study Phase 2.

Bird, L.; Lew, D.

2013-10-01T23:59:59.000Z

173

Cool heliosheath plasma and deceleration of the upstream solar wind at the termination shock  

E-Print Network [OSTI]

LETTERS Cool heliosheath plasma and deceleration of the upstream solar wind at the termination. The termination shock occurs where the solar wind changes from being supersonic (with respect to the surrounding of the termination shock between 30 August and 1 September 2007 (refs 4­7). Since then, Voyager 2 has remained

Richardson, John

174

Tuesday, 31 July, 2012 Rapid radiation belt losses occurring during high speed solar wind stream1  

E-Print Network [OSTI]

Tuesday, 31 July, 2012 1 Rapid radiation belt losses occurring during high speed solar wind stream1 Raita11 Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland12 Abstract. Recent geomagnetic disturbances triggered by the arrival of a Solar14 Wind Stream Interface (SWSI). In the current

Otago, University of

175

Are energetic electrons in the solar wind the source of the outer radiation belt?  

E-Print Network [OSTI]

Are energetic electrons in the solar wind the source of the outer radiation belt? Xinlin Li,1 D. N. Mewaldt6 Abstract. Using data from WIND, SAMPEX (Solar, Anomalous, and Magnetospheric Particle Explorer), and the Los Alamos National Laboratory (LANL) sensors onboard geostationary satellites, we investigate

Li, Xinlin

176

Electron and proton heating by solar wind turbulence B. Breech,1  

E-Print Network [OSTI]

Electron and proton heating by solar wind turbulence B. Breech,1 W. H. Matthaeus,2 S. R. Cranmer,3. Oughton (2009), Electron and proton heating by solar wind turbulence, J. Geophys. Res., 114, A09103, doi profile, requiring some process(es) to provide additional heat sources. One possible, and successful

Oughton, Sean

177

Specification of >2 MeV geosynchronous electrons based on solar wind measurements  

E-Print Network [OSTI]

affected by the solar wind. Statistical asynchronous regression (SAR), a statistical method recently use measurements directly from the solar wind, instead of the Kp index, and the SAR method when they pass through these local times. We cross calibrate the electron measurements from the five

Li, Xinlin

178

Prediction of the AL index using solar wind Xinlin Li,1,2,5  

E-Print Network [OSTI]

Prediction of the AL index using solar wind parameters Xinlin Li,1,2,5 Kap Soo Oh,1,3 and M. [1] Two empirical models, one simple, one more complex, are introduced to predict the AL index are based on solar wind and magnetometer data from the year 1995. The simple model predicts the 10-min

Li, Xinlin

179

Larmor radius size density holes discovered in the solar wind upstream of Earth's bow shock  

E-Print Network [OSTI]

Larmor radius size density holes discovered in the solar wind upstream of Earth's bow shock G. K. Cao Key Laboratory for Space Weather, CSSAR, CAS, Beijing, China K. Meziane Physics Department that are five or more times the solar wind density. Particle distributions show the steepened edge can behave

California at Berkeley, University of

180

Proton aurora dynamics in response to the IMF and solar wind variations  

E-Print Network [OSTI]

Proton aurora dynamics in response to the IMF and solar wind variations S.-W. Chang,1,2 S. B. Mende; accepted 24 April 2002; published 13 July 2002. [1] On May 23, 2000, proton auroras observed by IMAGE FUV wind parameters. A proton aurora brightened at high latitude poleward from the dayside oval after solar

California at Berkeley, University of

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


181

Persistent global proton aurora caused by high solar wind dynamic pressure  

E-Print Network [OSTI]

Persistent global proton aurora caused by high solar wind dynamic pressure K. M. Laundal1 and N] Global images of the proton aurora taken with the SI-12 camera onboard the IMAGE satellite reveal a very direct relationship between the solar wind dynamic pressure and the intensity of the global proton aurora

Bergen, Universitetet i

182

Heating of the Solar Wind Beyond 1 AU by Turbulent Dissipation  

E-Print Network [OSTI]

19716, USA 2Department of Mathematics, University College London, UK Abstract The deposition of energy(comp) = Cshear(comp) U r Z2 (1) where Z2 = hv2 +b2i is the energy density, U is the solar wind speed, and Cshear in the solar wind frame would yield a spherical distribution (solid curve). The di erence in kinetic energy

Oughton, Sean

183

Abstract--The variability and non-dispatchable nature of wind and solar energy production presents  

E-Print Network [OSTI]

1 Abstract--The variability and non-dispatchable nature of wind and solar energy production needed for a variety of energy storage applications can be found in [6]. Wind and solar power variations, energy storage can be a viable solution to balance energy production against its consumption. This paper

184

Fine Structure of the Solar Wind Turbulence Inferred from Simultaneous Radio Occultation Observations at  

E-Print Network [OSTI]

Fine Structure of the Solar Wind Turbulence Inferred from Simultaneous Radio Occultation Observations at Widely-Spaced Ground Stations M.K. Bird , P. Janardhan , A.I. Efimov, L.N. Samoznaev, V extended for up to four hours, thereby allowing studies of solar wind turbulence dynamics at spatial scales

Padmanabhan, Janardhan

185

Kinetic And Potential Sputtering Of Lunar Regolith: The Contribution Of The Heavy (Minority) Solar Wind Ions  

E-Print Network [OSTI]

Kinetic And Potential Sputtering Of Lunar Regolith: The Contribution Of The Heavy (Minority) Solar Wind Ions F.W. Meyera1 , P.R. Harrisa2 , H.M. Meyer IIIb , H. Hijazia , A.F. Barghoutyc a Physics, Huntsville, AL 35812, USA Abstract. In this paper the sputtering of lunar regolith by protons and solar wind

186

Solar-wind protons and heavy ions sputtering of lunar surface materials A.F. Barghouty a,  

E-Print Network [OSTI]

Solar-wind protons and heavy ions sputtering of lunar surface materials A.F. Barghouty a, , F Available online 21 December 2010 Keywords: Solar wind sputtering Lunar regolith KREEP soil Potential a c t Lunar surface materials are exposed to $1 keV/amu solar-wind protons and heavy ions on almost

187

Features of a fully renewable US electricity system: Optimized mixes of wind and solar PV and transmission grid extensions  

E-Print Network [OSTI]

in order to follow the de- mand, wind and solar PV power output is largely determined by weather conditions Large-scale integration of renewable power generation Wind power generation Solar PV power generation Power transmission a b s t r a c t A future energy system is likely to rely heavily on wind and solar PV

Jacobson, Mark

188

Loss of solar wind plasma neutrality and affect on surface potentials near the lunar terminator and shadowed polar regions  

E-Print Network [OSTI]

Loss of solar wind plasma neutrality and affect on surface potentials near the lunar terminator (2008), Loss of solar wind plasma neutrality and affect on surface potentials near the lunar terminator observations confirm a consistent solar wind-to-wake potential difference of many hundreds of volts (negative

California at Berkeley, University of

189

Discrepancies in the prediction of solar wind using potential field source surface model: An investigation of possible sources  

E-Print Network [OSTI]

Discrepancies in the prediction of solar wind using potential field source surface model expansion factor (FTE) at the source surface and the solar wind speed (SWS) observed at Earth, which has been made use of in the prediction of solar wind speed near the Earth with reasonable accuracy. However

California at Berkeley, University of

190

Cross-Scale Effects in Solar-Wind Turbulence  

SciTech Connect (OSTI)

The understanding of the small-scale termination of the turbulent energy cascade in collisionless plasmas is nowadays one of the outstanding problems in space physics. In the absence of collisional viscosity, the dynamics at small scales is presumably kinetic in nature; the identification of the physical mechanism which replaces energy dissipation and establishes the link between macroscopic and microscopic scales would open a new scenario in the study of turbulent heating in space plasmas. We present a numerical analysis of kinetic effects along the turbulent energy cascade in solar-wind plasmas which provides an effective unified interpretation of a wide set of spacecraft observations and shows that, simultaneously with an increase in the ion perpendicular temperature, strong bursts of electrostatic activity in the form of ion-acoustic turbulence are produced together with accelerated beams in the ion distribution function.

Valentini, F.; Veltri, P. [Dipartimento di Fisica and CNISM, Universita della Calabria, 87036 Rende (Serbia and Montenegro) (Italy); Califano, F. [Dipartimento di Fisica and CNISM, Universita di Pisa, 56127 Pisa (Italy); Mangeney, A. [Observatoire de Paris-Meudon, 92195 Meudon Cedex (France)

2008-07-11T23:59:59.000Z

191

Western Wind and Solar Integration Study Phase 2 (Presentation)  

SciTech Connect (OSTI)

This presentation accompanies Phase 2 of the Western Wind and Solar Integration Study, a follow-on to Phase 1, which examined the operational impacts of high penetrations of variable renewable generation on the electric power system in the West and was one of the largest variable generation studies to date. High penetrations of variable generation can induce cycling of fossil-fueled generators. Cycling leads to wear-and-tear costs and changes in emissions. Phase 2 calculated these costs and emissions, and simulated grid operations for a year to investigate the detailed impact of variable generation on the fossil-fueled fleet. The presentation highlights the scope of the study and results.

Lew, D.; Brinkman, G.; Ibanez, E.; Kumar, N.; Lefton, S.; Jordan, G.; Venkataraman, S.; King, J.

2013-06-01T23:59:59.000Z

192

A Dynamical Model of Plasma Turbulence in the Solar Wind  

E-Print Network [OSTI]

A dynamical approach, rather than the usual statistical approach, is taken to explore the physical mechanisms underlying the nonlinear transfer of energy, the damping of the turbulent fluctuations, and the development of coherent structures in kinetic plasma turbulence. It is argued that the linear and nonlinear dynamics of Alfven waves are responsible, at a very fundamental level, for some of the key qualitative features of plasma turbulence that distinguish it from hydrodynamic turbulence, including the anisotropic cascade of energy and the development of current sheets at small scales. The first dynamical model of kinetic turbulence in the weakly collisional solar wind plasma that combines self-consistently the physics of Alfven waves with the development of small-scale current sheets is presented and its physical implications are discussed. This model leads to a simplified perspective on the nature of turbulence in a weakly collisional plasma: the nonlinear interactions responsible for the turbulent casca...

Howes, G G

2015-01-01T23:59:59.000Z

193

The relation of solar wind structure to hydromagnetic discontinuities  

SciTech Connect (OSTI)

High resolution ISEE-3 data have been used to examine the relative abundances of tangential (TD) vs rotational (RD) discontinuities in different types of solar wind flow. Three types of flow were examined; flow from coronal holes, sector boundary flow and transient flow. It has been found that coronal hole flow has substantially more discontinuities and a greater ratio of RD's to TD's than do the other types of flow. Discontinuities are least frequent in transient flows characterized by bidirectional streaming of electrons. This leads us to the conclusion that meaningful studies of the velocity dependence of the rates of occurrence of different types of discontinuities must take the type of flow (coronal hole versus transient) into account. 7 refs., 3 figs., 1 tab.

Alexander, C.J.; Neugebauer, M.; Smith, E.J.; Bame, S.J.

1987-01-01T23:59:59.000Z

194

Comment on 'Air Emissions Due to Wind and Solar Power'  

SciTech Connect (OSTI)

Katzenstein and Apt investigate the important question of pollution emission reduction benefits from variable generation resources such as wind and solar. Their methodology, which couples an individual variable generator to a dedicated gas plant to produce a flat block of power, is, however, inappropriate. For CO{sub 2}, the authors conclude that variable generators ''achieve {approx}80% of the emission reductions expected if the power fluctuations caused no additional emissions.'' They find even lower NO{sub x} emission reduction benefits with steam injected gas turbines and a 2--4 times net increase in NO{sub x} emissions for systems with dry NO{sub x} control unless the ratio of energy from natural gas to variable plants is greater than 2:1. A more appropriate methodology, however, would find a significantly lower degradation of the emissions benefit than suggested by Katzenstein and Apt.

Mills, A.; Wiser, R.; Milligan, M.; O'Malley, M.

2009-01-01T23:59:59.000Z

195

CHARGE STATE EVOLUTION IN THE SOLAR WIND. II. PLASMA CHARGE STATE COMPOSITION IN THE INNER CORONA AND ACCELERATING FAST SOLAR WIND  

SciTech Connect (OSTI)

In the present work, we calculate the evolution of the charge state distribution within the fast solar wind. We use the temperature, density, and velocity profiles predicted by Cranmer et al. to calculate the ionization history of the most important heavy elements in the solar corona and solar wind: C, N, O, Ne, Mg, Si, S, and Fe. The evolution of each charge state is calculated from the source region in the lower chromosphere to the final freeze-in point. We show that the solar wind velocity causes the plasma to experience significant departures from equilibrium at very low heights, well inside the field of view (within 0.6 R{sub sun} from the solar limb) of nearly all the available remote-sensing instrumentation, significantly affecting observed spectral line intensities. We also study the evolution of charge state ratios with distance from the source region, and the temperature they indicate if ionization equilibrium is assumed. We find that virtually every charge state from every element freezes in at a different height, so that the definition of freeze-in height is ambiguous. We also find that calculated freeze-in temperatures indicated by charge state ratios from in situ measurements have little relation to the local coronal temperature of the wind source region, and stop evolving much earlier than their correspondent charge state ratio. We discuss the implication of our results on plasma diagnostics of coronal holes from spectroscopic measurements as well as on theoretical solar wind models relying on coronal temperatures.

Landi, E.; Gruesbeck, J. R.; Lepri, S. T.; Zurbuchen, T. H.; Fisk, L. A. [Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109 (United States)

2012-12-10T23:59:59.000Z

196

Collisional Thermalization of Hydrogen and Helium in Solar Wind Plasma  

E-Print Network [OSTI]

In situ observations of the solar wind frequently show the temperature of $\\alpha$-particles (fully ionized helium), $T_\\alpha$, to significantly differ from that of protons (ionized hydrogen), $T_p$. Many heating processes in the plasma act preferentially on $\\alpha$-particles, even as collisions among ions act to gradually establish thermal equilibrium. Measurements from the $\\textit{Wind}$ spacecraft's Faraday cups reveal that, at $r=1.0\\ \\textrm{AU}$ from the Sun, the observed values of the $\\alpha$-proton temperature ratio, $\\theta_{\\alpha p} \\equiv T_\\alpha\\,/\\,T_p$ has a complex, bimodal distribution. This study applied a simple model for the radial evolution of $\\theta_{\\alpha p}$ to these data to compute expected values of $\\theta_{\\alpha p}$ at $r=0.1\\ \\textrm{AU}$. These inferred $\\theta_{\\alpha p}$-values have no trace of the bimodality seen in the $\\theta_{\\alpha p}$-values measured at $r=1.0\\ \\textrm{AU}$ but are instead consistent with the actions of the known mechanisms for $\\alpha$-particle p...

Maruca, Bennett A; Sorriso-Valvo, Luca; Kasper, Justin C; Stevens, Michael L

2013-01-01T23:59:59.000Z

197

Transmission Benefits of Co-Locating Concentrating Solar Power and Wind  

SciTech Connect (OSTI)

In some areas of the U.S. transmission constraints are a limiting factor in deploying new wind and concentrating solar power (CSP) plants. Texas is an example of one such location, where the best wind and solar resources are in the western part of the state, while major demand centers are in the east. The low capacity factor of wind is a compounding factor, increasing the relative cost of new transmission per unit of energy actually delivered. A possible method of increasing the utilization of new transmission is to co-locate both wind and concentrating solar power with thermal energy storage. In this work we examine the benefits and limits of using the dispatachability of thermal storage to increase the capacity factor of new transmission developed to access high quality solar and wind resources in remote locations.

Sioshansi, R.; Denholm, P.

2012-03-01T23:59:59.000Z

198

5-minute Solar Oscillations and Ion Cyclotron Waves in the Solar Wind  

E-Print Network [OSTI]

In the present paper we study impact of the photospheric 5-minute oscillations on the ion cyclotron waves in the solar wind. We proceed from the assumption that the ion cyclotron waves in solar wind are experiencing modulation with a characteristic period of 5 minutes under the influence of Alfven waves driven by photospheric motions. The theory presented in our paper predicts a deep frequency modulation of the ion cyclotron waves. The frequency modulation is expected mainly from variations in orientation of the IMF lines. In turn, the variations in orientation are caused by the Alfven waves, propagating from the Sun. To test the theoretical predictions we have analyzed records of the ultra-low-frequency (ULF) geoelectromagnetic waves in order to find the permanent quasi-monochromatic oscillations of natural origin in the Pc1-2 frequency band (0.1-5 Hz), the carrier frequency of which varies with time in a wide range. As a result we found the so-called "serpentine emission" (SE), which was observed in Antarct...

Guglielmi, Anatol; Dovbnya, Boris

2015-01-01T23:59:59.000Z

199

The effect of high penetration of wind power on primary frequency control of power systems.  

E-Print Network [OSTI]

??In this work, a power system with wind power units and hydro power units are considered. The hydro power unit and variable speed wind turbine… (more)

Motamed, Bardia

2013-01-01T23:59:59.000Z

200

The Western Wind and Solar Integration Study Phase 2 (Fact Sheet), NREL (National Renewable Energy Laboratory)  

Broader source: Energy.gov [DOE]

This is one-page, two-sided fact sheet presents high-level summary results of the Western Wind and Solar Integration Study Phase 2, which examined operational impacts of high penetrations of variable renewable generation in the West.

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


201

Backstreaming ions outside the earth's bow shock and their interaction with the solar wind  

SciTech Connect (OSTI)

Analysis of plasma data supplied by the European satellite ISEE 2 has confirmed the existence in the solar wind of two different ion populations (referred to as 'reflected' and 'diffuse') backstreaming from the earth's bow shock. The two populations have similar bulk velocities and flux densities but quite different temperatures. In addition, the diffuse ions strongly interact with the solar wind, producing fluctuations in the distribution of the proton velocities, while the reflected ions do not disturb significantly the incoming solar wind. The origin of the two ion populations is then discussed. Although no firm conclusion is reached, the experimental evidence seems to favor a model which explains the appearance of the diffuse population as the result of an interaction of the reflected ions with the solar wind.

Bonifazi, C.; Egidi, A.; Moreno, G.; Orsini, S.

1980-07-01T23:59:59.000Z

202

Ener-Gee Whiz Answers Your Questions: Wind vs. Solar | Department...  

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

renewable energy system and are having a hard time deciding between the wind turbines and solar panels, you might find that the right renewable energy system for you depends on a...

203

Sales and Use Tax Exemption for Residential Solar and Wind Electricity Sales (Maryland)  

Broader source: Energy.gov [DOE]

In May 2011 Maryland enacted legislation providing a sales and use tax exemption for sales of electricity from qualifying solar energy and residential wind energy equipment to residential customers...

204

High time resolution observations of the solar wind and backstreaming ions in the earth's foreshock region  

SciTech Connect (OSTI)

The interaction of the solar wind with ions backstreaming from the earth's bow shock is studied at high time resolution. It turns out that the bulk velocity of the solar wind oscillates, both in magnitude and direction, with typical periods of approx.1 minute in presence of the 'diffuse' ion population. Oscillations of comparable periods are also observed in the angular distribution and energy spectrum of the diffuse ions.

Formisano, V.; Orsini, S.; Bonifazi, C.; Egidi, A.; Moreno, G.

1980-05-01T23:59:59.000Z

205

Energy analysis of substorms based on remote sensing techniques, solar wind measurements, and geomagnetic indices  

E-Print Network [OSTI]

Energy analysis of substorms based on remote sensing techniques, solar wind measurements wind Citation: Ã?stgaard, N., G. Germany, J. Stadsnes, and R. R. Vondrak, Energy analysis of substorms satellite have been used to examine the energy deposition in the Northern Hemisphere by precipitating

Ã?stgaard, Nikolai

206

Propagation of the 12 May 1997 interplanetary coronal mass ejection in evolving solar wind  

E-Print Network [OSTI]

Propagation of the 12 May 1997 interplanetary coronal mass ejection in evolving solar wind wind was determined from the Science Applications International Corporation (SAIC) coronal model (Riley distance between the shock and the driving ejecta and in the inclination of the shock with respect

California at Berkeley, University of

207

First lunar wake passage of ARTEMIS: Discrimination of wake effects and solar wind fluctuations by 3D hybrid simulations  

E-Print Network [OSTI]

First lunar wake passage of ARTEMIS: Discrimination of wake effects and solar wind fluctuations of 3D hybrid simulations. As the solar wind magnetic field was highly dynamic during the passage wind variations or by the lunar wake; therefore, a dynamic real-time simulation of the flyby has been

California at Berkeley, University of

208

Alfven waves in the solar wind in association with solar energetic particles: Sunspot umbral origin  

SciTech Connect (OSTI)

We report on a search for Alfven waves in the solar wind during solar particle events using ISEE 3 data. During the period 1979 June 6--6, we find signatures of outgoint Alfven waves which could have been released from the Sun simultaneously with the initial release of energetic particles. The waves have durations of 200--900 s. An isolated Alfven wave is also seen when the first particles (with E< or approx. =57 MeV) are detected by ISEE 3; the width of this wave is approx.950 s. A series of five small-amplitude ''spikes'' in the magnetic field are also seen, preceding the arrival of the first particles by a few hours. The spikes are separated by intervals of 854 +- 20 s. We suggest that these periodicities may be determined by the propagation characteristics of Alfven waves in the solar atmosphere. The features which we have detected apper to be consistent with Alfven waves released from the umbra of a sunspot during a flare.

Mullan, D.J.; Owens, A.J.

1984-05-01T23:59:59.000Z

209

Assessment of Wind/Solar Co-located Generation in Texas  

SciTech Connect (OSTI)

This paper evaluates the opportunity to load co-located wind and solar generation capacity onto a constrained transmission system while engendering only minimal losses. It quantifies the economic and energy opportunities and costs associated with pursuing this strategy in two Texas locations �¢���� one in west Texas and the other in south Texas. The study builds upon previous work published by the American Solar Energy Society (ASES) which illuminated the potential benefits of negative correlation of wind and solar generation in some locations by quantifying the economic and energy losses which would arise from deployment of solar generation in areas with existing wind generation and constrained transmission capacity. Clean Energy Associates (CEA) obtained and incorporated wind and solar resource data and the Electric Reliability Council of Texas (ERCOT)) load and price data into a model which evaluates varying levels of solar thermal, solar photovoltaic (PV) and wind capacity against an assumed transmission capacity limit at each of the two locations.

Steven M. Wiese

2009-07-20T23:59:59.000Z

210

Shock Acceleration of the Energetic Particle Background in the Solar Wind David T. Sodaitis  

E-Print Network [OSTI]

Shock Acceleration of the Energetic Particle Background in the Solar Wind David T. Sodaitis Physics Department, University of New Hampshire Durham, New Hampshire, USA sodaitis@cisunix.unh.edu ABSTRACT Lee with solar energetic particle (SEP) events (Desai et al. 2003) have shown that shock acceleration may act

211

ON INTERMITTENT TURBULENCE HEATING OF THE SOLAR WIND: DIFFERENCES BETWEEN TANGENTIAL AND ROTATIONAL DISCONTINUITIES  

SciTech Connect (OSTI)

The intermittent structures in solar wind turbulence, studied by using measurements from the WIND spacecraft, are identified as being mostly rotational discontinuities (RDs) and rarely tangential discontinuities (TDs) based on the technique described by Smith. Only TD-associated current sheets (TCSs) are found to be accompanied with strong local heating of the solar wind plasma. Statistical results show that the TCSs have a distinct tendency to be associated with local enhancements of the proton temperature, density, and plasma beta, and a local decrease of magnetic field magnitude. Conversely, for RDs, our statistical results do not reveal convincing heating effects. These results confirm the notion that dissipation of solar wind turbulence can take place in intermittent or locally isolated small-scale regions which correspond to TCSs. The possibility of heating associated with RDs is discussed.

Wang Xin; Tu Chuanyi; He Jiansen; Wang Linghua [School of Earth and Space Sciences, Peking University, 100871 Beijing (China); Marsch, Eckart, E-mail: chuanyitu@pku.edu.cn [Institute for Experimental and Applied Physics, Christian Albrechts University at Kiel, D-24118 Kiel (Germany)

2013-08-01T23:59:59.000Z

212

Real-time solar wind prediction based on SDO/AIA coronal hole data  

E-Print Network [OSTI]

We present an empirical model based on the visible area covered by coronal holes close to the central meridian in order to predict the solar wind speed at 1 AU with a lead time up to four days in advance with a 1hr time resolution. Linear prediction functions are used to relate coronal hole areas to solar wind speed. The function parameters are automatically adapted by using the information from the previous 3 Carrington Rotations. Thus the algorithm automatically reacts on the changes of the solar wind speed during different phases of the solar cycle. The adaptive algorithm has been applied to and tested on SDO/AIA-193A observations and ACE measurements during the years 2011-2013, covering 41 Carrington Rotations. The solar wind speed arrival time is delayed and needs on average 4.02 +/- 0.5 days to reach Earth. The algorithm produces good predictions for the 156 solar wind high speed streams peak amplitudes with correlation coefficients of cc~0.60. For 80% of the peaks, the predicted arrival matches within ...

Rotter, T; Temmer, M; Vrsnak, B

2015-01-01T23:59:59.000Z

213

Convective Instability Of The Solar Corona: Why The Solar Wind Blows  

E-Print Network [OSTI]

Chapman's (1957) conductive model of the solar corona is characterized by a temperature varying as r**(-2/7) with heliocentric distance r. The density distribution in this non-isothermal hydrostatic model has a minimum value at 123 RS, and increases with r above that altitude. It is shown that this hydrostatic model becomes convectively unstable above r = 35 RS, where the temperature lapse rate becomes superadiabatic. Beyond this radial distance heat conduction fails to be efficient enough to keep the temperature gradient smaller than the adiabatic lapse rate. We report the results obtained by Lemaire (1968) who showed that an additional mechanism is then required to transport the energy flux away from the Sun into interplanetary space. He pointed out that this additional mechanism is advection: i.e. the stationary hydrodynamic expansion of the corona. In other words the corona is unable to stay in hydrostatic equilibrium. The hydrodynamic solar wind expansion is thus a physical consequence of the too steep (...

Lemaire, Joseph

2012-01-01T23:59:59.000Z

214

Property Tax Exemption for Solar and Wind Energy Systems  

Broader source: Energy.gov [DOE]

In May 2007, Maryland established a property tax exemption for residential solar energy systems. Under this law solar energy devices “installed to heat or cool a dwelling, generate electricity to...

215

Puerto Rico- Tax Deduction for Solar and Wind Energy Systems  

Broader source: Energy.gov [DOE]

Puerto Rico offers a 30% tax deduction (up to $1500) for expenses incurred in the purchase and installation of solar equipment to heat water for residential use. "Solar equipment" is defined as ...

216

Novel Control of PV Solar and Wind Farm Inverters as STATCOM for Increasing Connectivity of Distributed Generators.  

E-Print Network [OSTI]

??The integration of distributed generators (DGs) such as wind farms and PV solar farms in distribution networks is getting severely constrained due to problems of… (more)

AC, Mahendra

2013-01-01T23:59:59.000Z

217

Impact of High Wind Power Penetration on Hydroelectric Unit Operations  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study (WWSIS) investigated the operational impacts of very high levels of variable generation penetration rates (up to 35% by energy) in the western United States. This work examines the impact of this large amount of wind penetration on hydroelectric unit operations. Changes in hydroelectric unit operating unit patterns are examined for an aggregation of all hydro generators. The cost impacts of maintaining hydro unit flexibility are assessed and compared for a number of different modes of system operation.

Hodge, B. M.; Lew, D.; Milligan, M.

2011-01-01T23:59:59.000Z

218

Studying Complexity in Solar Wind Plasma During Shock Events. Part I: Nonextensive Tsallis Statistics  

E-Print Network [OSTI]

Novel results which reveal phase transition processes in the solar wind plasma during shock events are presented in this study which is the first part of a trilogy concerning the solar wind complexity. Solar wind plasma is a typical case of stochastic spatiotemporal distribution of physical magnitudes such as force fields (B, E) and matter fields (particle and current densities or bulk plasma distributions). The results of this study can be understood in the framework of modern theoretical concepts such as non-extensive statistical mechanics (Tsallis, 2009), fractal topology (Zelenyi and Milovanov, 2004), turbulence theory (Frisch,1996), strange dynamics (Zaslavsky, 2002), percolation theory (Milovanov, 1997), anomalous diffusion theory and anomalous transport theory (Milovanov, 2001), fractional dynamics (Tarasov, 2007) and non-equilibrium phase transition theory (Chang, 1992). This study shows clearly the non-extensive and non-Gaussian character of the solar wind plasma and the existence of multi-scale strong correlations from the microscopic to the macroscopic level. This result indicates the inefficiency of classical MHD or plasma statistical theories based on the classical central limit theorem to explain the complexity of the solar wind dynamics, since these theories include smooth and differentiable spatial-temporal functions (MHD theory) or Gaussian statistics (Boltzmann-Maxwell statistical mechanics). However, the results of this study indicate the presence of non-Gaussian non-extensive statistics with heavy tails probability distribution functions, which are related to the q-extension of central limit theorem.

G. P. Pavlos; A. C. Iliopoulos; G. N. Zastenker; L. M. Zelenyi; L. P. Karakatsanis; M. Riazantseva; M. N. Xenakis; E. G. Pavlos

2013-10-01T23:59:59.000Z

219

Anomalous Viscosity, Resistivity, and Thermal Diffusivity of the Solar Wind Plasma  

E-Print Network [OSTI]

In this paper we have estimated typical anomalous viscosity, resistivity, and thermal difffusivity of the solar wind plasma. Since the solar wind is collsionless plasma, we have assumed that the dissipation in the solar wind occurs at proton gyro radius through wave-particle interactions. Using this dissipation length-scale and the dissipation rates calculated using MHD turbulence phenomenology [Verma et al., 1995a], we estimate the viscosity and proton thermal diffusivity. The resistivity and electron’s thermal diffusivity have also been estimated. We find that all our transport quantities are several orders of magnitude higher than those calculated earlier using classical transport theories of Braginskii. In this paper we have also estimated the eddy turbulent viscosity. 1 1

Mahendra K. Verma

2008-01-01T23:59:59.000Z

220

Konus-Wind and Helicon-Coronas-F Observations of Solar Flares  

E-Print Network [OSTI]

Results of solar flare observations obtained in the Konus-Wind experiment from November, 1994 to December, 2013 and in the Helicon Coronas-F experiment during its operation from 2001 to 2005, are presented. For the periods indicated Konus-Wind detected in the trigger mode 834 solar flares, and Helicon-Coronas-F detected more than 300 solar flares. A description of the instruments and data processing techniques are given. As an example, the analysis of the spectral evolution of the flares SOL2012-11-08T02:19 (M 1.7) and SOL2002-03-10T01:34 (C5.1) is made with the Konus-Wind data and the flare SOL2003-10-26T06:11 (X1.2) is analyzed in the 2.223 MeV deuterium line with the Helicon-Coronas-F data.

Pal'shin, V D; Aptekar, R L; Golenetskii, S V; Kokomov, A A; Svinkin, D S; Sokolova, Z Ya; Ulanov, M V; Frederiks, D D; Tsvetkova, A E

2014-01-01T23:59:59.000Z

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


221

Nonlinear interaction of proton whistler with kinetic Alfvén wave to study solar wind turbulence  

SciTech Connect (OSTI)

This paper presents the nonlinear interaction between small but finite amplitude kinetic Alfvén wave (KAW) and proton whistler wave using two-fluid model in intermediate beta plasma, applicable to solar wind. The nonlinearity is introduced by modification in the background density. This change in density is attributed to the nonlinear ponderomotive force due to KAW. The solutions of the model equations, governing the nonlinear interaction (and its effect on the formation of localized structures), have been obtained using semi-analytical method in solar wind at 1AU. It is concluded that the KAW properties significantly affect the threshold field required for the filament formation and their critical size (for proton whistler). The magnetic and electric field power spectra have been obtained and their relevance with the recent observations of solar wind turbulence by Cluster spacecraft has been pointed out.

Goyal, R.; Sharma, R. P. [Centre for Energy Studies, Indian Institute of Technology, Delhi-110016 (India)] [Centre for Energy Studies, Indian Institute of Technology, Delhi-110016 (India); Goldstein, M. L. [NASA Goddard Space Flight Centre, Code 673, Greenbelt, Maryland 20771 (United States)] [NASA Goddard Space Flight Centre, Code 673, Greenbelt, Maryland 20771 (United States); Dwivedi, N. K. [Austrian Academy of Sciences, Space Research Institute, Schmiedlstrasse 6, 8042 Graz (Austria)] [Austrian Academy of Sciences, Space Research Institute, Schmiedlstrasse 6, 8042 Graz (Austria)

2013-12-15T23:59:59.000Z

222

INFLUENCE OF SOLAR WIND HEATING FORMULATIONS ON THE PROPERTIES OF SHOCKS IN THE CORONA  

SciTech Connect (OSTI)

One of the challenges in constructing global magnetohydrodynamic (MHD) models of the inner heliosphere for, e.g., space weather forecasting purposes, is to correctly capture the acceleration and expansion of the solar wind. In current models, various ad hoc heating prescriptions are introduced in order to obtain a realistic steady-state solar wind solution. In this work, we demonstrate, by performing MHD simulations of erupting coronal mass ejections (CMEs) on identical solar wind solutions employing different heating formulations, that the dynamics and properties of the CME-driven shocks are significantly altered depending on the applied heating prescription. Furthermore, we show how two popular heating formulations can be altered so as to yield shock properties consistent with theory and available coronal shock observations.

Pomoell, J.; Vainio, R., E-mail: jens.pomoell@helsinki.fi [Department of Physics, University of Helsinki (Finland)

2012-02-01T23:59:59.000Z

223

Anomalous Viscosity, Resistivity, and Thermal Diffusivity of the Solar Wind Plasma  

E-Print Network [OSTI]

In this paper we have estimated typical anomalous viscosity, resistivity, and thermal difffusivity of the solar wind plasma. Since the solar wind is collsionless plasma, we have assumed that the dissipation in the solar wind occurs at proton gyro radius through wave-particle interactions. Using this dissipation length-scale and the dissipation rates calculated using MHD turbulence phenomenology [{\\it Verma et al.}, 1995a], we estimate the viscosity and proton thermal diffusivity. The resistivity and electron's thermal diffusivity have also been estimated. We find that all our transport quantities are several orders of magnitude higher than those calculated earlier using classical transport theories of {\\it Braginskii}. In this paper we have also estimated the eddy turbulent viscosity.

Mahendra K. Verma

1995-09-05T23:59:59.000Z

224

Permutation Entropy and Statistical Complexity Analysis of Turbulence in Laboratory Plasmas and the Solar Wind  

E-Print Network [OSTI]

The Bandt-Pompe permutation entropy and the Jensen-Shannon statistical complexity are used to analyze fluctuating time series of three different plasmas: the magnetohydrodynamic (MHD) turbulence in the plasma wind tunnel of the Swarthmore Spheromak Experiment (SSX), drift-wave turbulence of ion saturation current fluctuations in the edge of the Large Plasma Device (LAPD) and fully-developed turbulent magnetic fluctuations of the solar wind taken from the WIND spacecraft. The entropy and complexity values are presented as coordinates on the CH plane for comparison among the different plasma environments and other fluctuation models. The solar wind is found to have the highest permutation entropy and lowest statistical complexity of the three data sets analyzed. Both laboratory data sets have larger values of statistical complexity, suggesting these systems have fewer degrees of freedom in their fluctuations, with SSX magnetic fluctuations having slightly less complexity than the LAPD edge fluctuations. The CH ...

Weck, Peter J; Brown, Michael R; Wicks, Robert T

2014-01-01T23:59:59.000Z

225

THE DEPENDENCE OF MAGNETIC RECONNECTION ON PLASMA {beta} AND MAGNETIC SHEAR: EVIDENCE FROM SOLAR WIND OBSERVATIONS  

SciTech Connect (OSTI)

We address the conditions for the onset of magnetic reconnection based on a survey of 197 reconnection events in solar wind current sheets observed by the Wind spacecraft. We report the first observational evidence for the dependence of the occurrence of reconnection on a combination of the magnetic field shear angle, {theta}, across the current sheet and the difference in the plasma {beta} values on the two sides of the current sheet, {Delta}{beta}. For low {Delta}{beta}, reconnection occurred for both low and high magnetic shears, whereas only large magnetic shear events were observed for large {Delta}{beta}: Events with shears as low as 11{sup 0} were observed for {Delta}{beta} < 0.1, but for {Delta}{beta} > 1.5 only events with {theta} > 100{sup 0} were detected. Our observations are in quantitative agreement with a theoretical prediction that reconnection is suppressed in high {beta} plasmas at low magnetic shears due to super-Alfvenic drift of the X-line caused by plasma pressure gradients across the current sheet. The magnetic shear-{Delta}{beta} dependence could account for the high occurrence rate of reconnection observed in current sheets embedded within interplanetary coronal mass ejections, compared to those in the ambient solar wind. It would also suggest that reconnection could occur at a substantially higher rate in solar wind current sheets closer to the Sun than at 1 AU and thus may play an important role in the generation and heating of the solar wind.

Phan, T. D.; Pasma, C.; Oeieroset, M.; Larson, D.; Lin, R. P.; Davis, M. S. [SSL, University of California, Berkeley, CA 94720 (United States); Gosling, J. T. [University of Colorado, Boulder, CO (United States); Paschmann, G. [MPE, Garching (Germany); Drake, J. F., E-mail: phan@ssl.berkeley.ed [University of Maryland, College Park, MD (United States)

2010-08-20T23:59:59.000Z

226

Solar, Wind, and Energy Efficiency Easements and Rights Laws  

Broader source: Energy.gov [DOE]

Colorado's solar access laws, which date back to 1979, prohibit any residential covenants that restrict solar access. [http://www.leg.state.co.us/CLICS/CLICS2008A/csl.nsf/fsbillcont3/3F45E0C8... HB...

227

Western Wind and Solar Integration Study Phase 3 -- Frequency Response and Transient Stability (Report and Executive Summary)  

SciTech Connect (OSTI)

The primary objectives of Phase 3 of the Western Wind and Solar Integration Study (WWSIS-3) were to examine the large-scale transient stability and frequency response of the Western Interconnection with high wind and solar penetration, and to identify means to mitigate any adverse performance impacts via transmission reinforcements, storage, advanced control capabilities, or other alternatives.

Miller, N. W.; Shao, M.; Pajic, S.; D'Aquila, R.

2014-12-01T23:59:59.000Z

228

Tracing solar wind plasma entry into the magnetosphere1 using ion-to-electron temperature ratio2  

E-Print Network [OSTI]

solar wind conditions, i.e., high MA (> 6),54 energy conversion at the bow shock leads to high ion-to-551 Tracing solar wind plasma entry into the magnetosphere1 using ion-to-electron temperature ratio2 Department of Physics, La Trobe University, Victoria, Australia18 11 Geophysik & extraterrestrische physik

Paris-Sud XI, Université de

229

Solar wind structure in the outer heliosphere J.D. Richardson a,b,*, Y. Liu a  

E-Print Network [OSTI]

Solar wind structure in the outer heliosphere J.D. Richardson a,b,*, Y. Liu a , C. Wang b a Kavli Academy of Sciences, P.O. Box 8701, Beijing 100080, China Received 29 November 2006; received in revised form 8 February 2007; accepted 27 March 2007 Abstract A solar wind parcel evolves as it moves outward

California at Berkeley, University of

230

Sputtering of lunar regolith simulant by protons and singly and multicharged Ar ions at solar wind energies  

E-Print Network [OSTI]

for solar wind multi- charged ions having similar neutralization potential energies [1]. WeightedSputtering of lunar regolith simulant by protons and singly and multicharged Ar ions at solar wind energies F.W. Meyer a, , P.R. Harris a , C.N. Taylor a,1 , H.M. Meyer III b , A.F. Barghouty c , J.H. Adams

231

Integration Costs: Are They Unique to Wind and Solar Energy? Preprint  

SciTech Connect (OSTI)

Over the past several years, there has been considerable interest in assessing wind integration costs. This is understandable because wind energy does increase the variability and uncertainty that must be managed on a power system. However, there are other sources of variability and uncertainty that also must be managed in the power system. This paper describes some of these sources and shows that even the introduction of base-load generation can cause additional ramping and cycling. The paper concludes by demonstrating that integration costs are not unique to wind and solar, and should perhaps instead be assessed by power plant and load performance instead of technology type.

Milligan, M.; Hodge, B.; Kirby, B.; Clark, C.

2012-05-01T23:59:59.000Z

232

Solar and Wind Energy Business Franchise Tax Exemption  

Broader source: Energy.gov [DOE]

Companies in Texas engaged solely in the business of manufacturing, selling, or installing solar energy devices are exempted from the franchise tax. The franchise tax is Texas’s equivalent to a...

233

Solar and Wind Energy Device Franchise Tax Deduction  

Broader source: Energy.gov [DOE]

Texas allows a corporation or other entity subject the state franchise tax to deduct the cost of a solar energy device from the franchise tax. Entities are permitted to deduct 10% of the amortized...

234

Solar wind oscillations with a 1.3 year period John D. Richardson, Karolen I. Paularena, John W. Belcher, and Alan J. Lazaru  

E-Print Network [OSTI]

Solar wind oscillations with a 1.3 year period s C John D. Richardson, Karolen I. Paularena, John W Abstract. The IMP-8 and Voyager 2 spacecraft have ecently detected a very strong modulation in the solar. Introduction The Sun emits a continuous stream of ionized particles s d called the solar wind. This wind

Richardson, John

235

1987JOURNALOF GEOPHYSICALRESEARCH,VOL. 92 NO. A8, PAGES8545-8557, AUGUST1 CHARACTERISTICS OF THE MARSLIKE LIMIT OF THE VENUS-SOLAR WIND INTERACTION  

E-Print Network [OSTI]

on the interplanetary features of the solar wind inter- action. At the outer boundary of the interaction region, the bow a boundary where the incident solar wind dynamic pressure is balanced by the equivalent ionospheric thermal the solar wind at Mars. However, it is also known from the Venus observations that the bow shock can

California at Berkeley, University of

236

New Battery Design Could Help Solar and Wind Power the Grid  

Broader source: Energy.gov [DOE]

Researchers from the U.S. Department of Energy’s (DOE) SLAC National Accelerator Laboratory and Stanford University have designed a low-cost, long-life “flow” battery that could enable solar and wind energy to become major suppliers to the electrical grid.

237

The Global Solar and Wind Atlas: a unique Global Spatial Data Infrastructure for all renewable energy  

E-Print Network [OSTI]

@masdar.ac.ae Nicolas Fichaux International Renewable Energy Agency - IRENA Abu Dhabi United Arab Emirates NFichaux in the field of solar and wind energy. The initiative will be expanded to encompass all renewable energies by 2015, and will be the largest information source on renewable energy potentials ever created. It has

Paris-Sud XI, Université de

238

Impacts of Wind and Solar on Fossil-Fueled Generators: Preprint  

SciTech Connect (OSTI)

High penetrations of wind and solar power will impact the operations of the remaining generators on the power system. Regional integration studies have shown that wind and solar may cause fossil-fueled generators to cycle on and off and ramp down to part load more frequently and potentially more rapidly. Increased cycling, deeper load following, and rapid ramping may result in wear-and-tear impacts on fossil-fueled generators that lead to increased capital and maintenance costs, increased equivalent forced outage rates, and degraded performance over time. Heat rates and emissions from fossil-fueled generators may be higher during cycling and ramping than during steady-state operation. Many wind and solar integration studies have not taken these increased cost and emissions impacts into account because data have not been available. This analysis considers the cost and emissions impacts of cycling and ramping of fossil-fueled generation to refine assessments of wind and solar impacts on the power system.

Lew, D.; Brinkman, G.; Kumar, N.; Besuner, P.; Agan, D.; Lefton, S.

2012-08-01T23:59:59.000Z

239

An empirical model of magnetospheric chorus amplitude using solar wind and geomagnetic indices  

E-Print Network [OSTI]

hiss amplitude, also using THEMIS data [Golden et al., 2012]. Using the output of these models, we showAn empirical model of magnetospheric chorus amplitude using solar wind and geomagnetic indices D. I. The goal of this study is to design an empirical model of chorus amplitude, the output of which can be used

240

Genesis : the search for origins : the curation and contamination control of returned solar wind samples  

E-Print Network [OSTI]

The purpose of the studies carried out in this thesis was to aid in the curation of samples of solar wind returned to earth on the Genesis spacecraft. An experimental study was carried out to aid development of a set of ...

Jackson, Benjamin K

2005-01-01T23:59:59.000Z

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


241

NREL Energy Models Examine the Potential for Wind and Solar Grid Integration (Fact Sheet)  

SciTech Connect (OSTI)

As renewable energy generating sources, such as wind turbines and solar power systems, reach high levels of penetration in parts of the United States, the National Renewable Energy Laboratory (NREL) is helping the utility industry to peer into the future. Using software modeling tools that the lab developed, NREL is examining the future operation of the electrical grid as renewable energy continues to grow.

Not Available

2013-11-01T23:59:59.000Z

242

Value of Geographic Diversity of Wind and Solar: Stochastic Geometry Approach; Preprint  

SciTech Connect (OSTI)

Based on the available geographically dispersed data for the continental U.S. (excluding Alaska), we analyze to what extent the geographic diversity of these resources can offset their variability. A geometric model provides a convenient measure for resource variability, shows the synergy between wind and solar resources.

Diakov, V.

2012-08-01T23:59:59.000Z

243

A PARALLEL ADAPTIVE 3D MHD SCHEME FOR MODELING CORONAL AND SOLAR WIND PLASMA FLOWS  

E-Print Network [OSTI]

A PARALLEL ADAPTIVE 3D MHD SCHEME FOR MODELING CORONAL AND SOLAR WIND PLASMA FLOWS C. P. T. GROTH, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109­2143, USA K. G. POWELL Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109­2118, USA Abstract. A parallel adaptive

De Zeeuw, Darren L.

244

THE DYNAMIC QUIET SUN: CONTRIBUTION TO CORONAL HEATING ANF SOLAR WIND  

E-Print Network [OSTI]

THE DYNAMIC QUIET SUN: CONTRIBUTION TO CORONAL HEATING ANF SOLAR WIND Maria Madjarska Wednesday, September 19, 2012 #12;The dynamic Sun at all scales Wednesday, September 19, 2012 #12;The dynamic Sun at all scales Wednesday, September 19, 2012 #12;The dynamic Sun at all scales Wednesday, September 19

245

Features of a fully renewable US electricity system: Optimized mixes of wind and solar PV and transmission grid extensions  

E-Print Network [OSTI]

Wind and solar PV generation data for the entire contiguous US are calculated, on the basis of 32 years of weather data with temporal resolution of one hour and spatial resolution of 40x40km$^2$, assuming site-suitability-based as well as stochastic wind and solar PV capacity distributions throughout the country. These data are used to investigate a fully renewable electricity system, resting primarily upon wind and solar PV power. We find that the seasonal optimal mix of wind and solar PV comes at around 80% solar PV share, owing to the US summer load peak. By picking this mix, long-term storage requirements can be more than halved compared to a wind only mix. The daily optimal mix lies at about 80% wind share due to the nightly gap in solar PV production. Picking this mix instead of solar only reduces backup energy needs by about 50%. Furthermore, we calculate shifts in FERC (Federal Energy Regulatory Commission)-level LCOE (Levelized Costs Of Electricity) for wind and solar PV due to their differing resour...

Becker, Sarah; Andresen, Gorm B; Zeyer, Timo; Schramm, Stefan; Greiner, Martin; Jacobson, Mark Z

2014-01-01T23:59:59.000Z

246

Scaling Laws of Turbulence and Heating of Fast Solar Wind: The Role of Density Fluctuations  

SciTech Connect (OSTI)

Incompressible and isotropic magnetohydrodynamic turbulence in plasmas can be described by an exact relation for the energy flux through the scales. This Yaglom-like scaling law has been recently observed in the solar wind above the solar poles observed by the Ulysses spacecraft, where the turbulence is in an Alfvenic state. An analogous phenomenological scaling law, suitably modified to take into account compressible fluctuations, is observed more frequently in the same data set. Large-scale density fluctuations, despite their low amplitude, thus play a crucial role in the basic scaling properties of turbulence. The turbulent cascade rate in the compressive case can, moreover, supply the energy dissipation needed to account for the local heating of the nonadiabatic solar wind.

Carbone, V. [Dipartimento di Fisica, Universita della Calabria, Ponte Bucci 31C, I-87036 Rende (Italy); Liquid Crystal Laboratory, INFM/CNR, Ponte Bucci 33B, I-87036 Rende (Italy); Marino, R. [Dipartimento di Fisica, Universita della Calabria, Ponte Bucci 31C, I-87036 Rende (Italy); University of Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, B.P. 4229, 06304 Nice Cedex 4 (France); Sorriso-Valvo, L. [Liquid Crystal Laboratory, INFM/CNR, Ponte Bucci 33B, I-87036 Rende (Italy); Noullez, A. [University of Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, B.P. 4229, 06304 Nice Cedex 4 (France); Bruno, R. [Istituto di Fisica dello Spazio Interplanetario-INAF, via Fosso del Cavaliere Roma (Italy)

2009-08-07T23:59:59.000Z

247

Wind loading on tracking and field-mounted solar collectors  

SciTech Connect (OSTI)

Current design and testing procedures for wind loading are discussed. The test results corresponding to numerous wind tests on heliostats, parabolic troughs, parabolic dishes, and field mounted photovoltaic arrays are discussed and the applicability of the findings across the various technologies is assessed. One of the most significant consistencies in the data from all of the technologies is the apparent benefit provided by fences and field shielding. Taken in toto, these data show that load reductions of three, or possibly more, seem feasible, though a more thorough understanding of the phenomena involved must be attained before this benefit can be realized. It is recommended that the required understanding be developed to take advantage of this benefit and that field tests be conducted to correlate with both analyses and tests.

Murphy, L.M.

1980-12-01T23:59:59.000Z

248

Application of a MHD hybrid solar wind model with latitudinal dependences to Ulysses data at minimum  

E-Print Network [OSTI]

In a previous work, Ulysses data was analyzed to build a complete axisymmetric MHD solution for the solar wind at minimum including rotation and the initial flaring of the solar wind in the low corona. This model has some problems in reproducing the values of magnetic field at 1 AU despite the correct values of the velocity. Here, we intend to extend the previous analysis to another type of solutions and to improve our modelling of the wind from the solar surface to 1 AU. We compare the previous results to those obtained with a fully helicoidal model and construct a hybrid model combining both previous solutions, keeping the flexibility of the parent models in the appropriate domain. From the solar surface to the Alfven, point, a three component solution for velocity and magnetic field is used, reproducing the complex wind geometry and the well-known flaring of the field lines observed in coronal holes. From the Alfven radius to 1 AU and further, the hybrid model keeps the latitudinal dependences as flexible as possible, in order to deal with the sharp variations near the equator and we use the helicoidal solution, turning the poloidal streamlines into radial ones. Despite the absence of the initial flaring, the helicoidal model and the first hybrid solution suffer from the same low values of the magnetic field at 1 AU. However, by adjusting the parameters with a second hybrid solution, we are able to reproduce both the velocity and magnetic profiles observed by Ulysses and a reasonable description of the low corona, provided that a certain amount of energy deposit exists along the flow. The present paper shows that analytical axisymmetric solutions can be constructed to reproduce the solar structure and dynamics from 1 solar radius up to 1 AU.

A. Aibeo; J. Lima; C. Sauty

2007-01-04T23:59:59.000Z

249

Occurrence of high-speed solar wind streams over the Grand Modern Maximum  

E-Print Network [OSTI]

In the declining phase of the solar cycle, when the new-polarity fields of the solar poles are strengthened by the transport of same-signed magnetic flux from lower latitudes, the polar coronal holes expand and form non-axisymmetric extensions toward the solar equator. These extensions enhance the occurrence of high-speed solar wind streams (HSS) and related co-rotating interaction regions in the low-latitude heliosphere, and cause moderate, recurrent geomagnetic activity in the near-Earth space. Here, using a novel definition of geomagnetic activity at high (polar cap) latitudes and the longest record of magnetic observations at a polar cap station, we calculate the annually averaged solar wind speeds as proxies for the effective annual occurrence of HSS over the whole Grand Modern Maximum (GMM) from 1920s onwards. We find that a period of high annual speeds (frequent occurrence of HSS) occurs in the declining phase of each solar cycle 16-23. For most cycles the HSS activity clearly maximizes during one year...

Mursula, Kalevi; Holappa, Lauri

2015-01-01T23:59:59.000Z

250

Solar and Wind Powering Wyoming Home | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energyof the Americas |DOEEnergy SmoothSolar IndustrySB 2

251

Global Atlas for Solar and Wind Energy | Open Energy Information  

Open Energy Info (EERE)

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

252

Solar wind suprathermal electron Stahl widths across high-speed stream structures  

SciTech Connect (OSTI)

Suprathermal electrons (100-1500 eV) observed in the solar wind typically show a strahl distribution, that is, a beam directed away from the Sun along the magnetic field direction. The strahl width observed at 1 AU is highly variable, ranging from 10-70 degrees. The obsenred finite width of the strahl results from the competition between beam focusing as the interplanetary magnetic field strength drops with distance from the Sun, and pitch-angle scattering as the beam interacts with the solar wind plasma in transit from the sun. Here we examine strahl width, observed with ACE SWEPAM across high-speed stream structures to investigate variations in electron scattering as a function of local plasma characteristics. We find that narrow strahls (less than 20 degrees wide), indicating reduced scattering, are observed within high-speed streams. Narrow strahls are also observed in both very low temperature solar wind, in association with ICMEs. Case studies of high-speed streams typically show the strahl narrowing at the leading edge of the stream. In some cases, the strahl narrows at the reverse shock or pressure wave, in other cases at the stream interface. The narrowing can either occur discontinuously or gradually over a period of hours. Within the high-speed wind, the strahl remains narrow for a period of hours to days, and then gradually broadens. The strahl width is roughly constant at all energies across these structures. For some fraction of high-speed streams, counterstreaming is associated with passage of the corotating interaction region. In these cases, we find the widths of the two counterstreaming beams frequently differ by more than 40 degrees. This dramatic difference in strahl width contrasts with observations in the solar wind as a whole, in which counterstreaming strahls typically differ in width by less than 20 degrees.

Skoug, Ruth M [Los Alamos National Laboratory; Steinberg, John T [Los Alamos National Laboratory; Goodrich, Katherine A [Los Alamos National Laboratory; Anderson, Brett R [DARTMUTH UNIV.

2011-01-03T23:59:59.000Z

253

Chaotic mean wind in turbulent thermal convection and long-term correlations in solar activity  

E-Print Network [OSTI]

It is shown that correlation function of the mean wind velocity in a turbulent thermal convection (Rayleigh number $Ra \\sim 10^{11}$) exhibits exponential decay with a very long correlation time, while corresponding largest Lyapunov exponent is certainly positive. These results together with the reconstructed phase portrait indicate presence of a chaotic component in the examined mean wind. Telegraph approximation is also used to study relative contribution of the chaotic and stochastic components to the mean wind fluctuations and an equilibrium between these components has been studied. Since solar activity is based on the thermal convection processes, it is reasoned that the observed solar activity long-term correlations can be an imprint of the mean wind chaotic properties. In particular, correlation function of the daily sunspots number exhibits exponential decay with a very long correlation time and corresponding largest Lyapunov exponent is certainly positive, also relative contribution of the chaotic and stochastic components follows the same pattern as for the convection mean wind.

A. Bershadskii

2009-12-25T23:59:59.000Z

254

Climate Change in Scotland: Impact on Mini-Hydro G.P. Harrison  

E-Print Network [OSTI]

be generated from wind, wave, biomass or small- or mini-hydro plant. Production from these resources some 300 MW is small hydro potential capable of producing energy at less than 7p/kWh (Garrad Hassan, 2001). Although many of the better sites for small and mini-hydro have already been developed

Harrison, Gareth

255

Power House Solar and Wind | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories onFocusOskiPhilips ColorLoading map...ClimatePowderOpenEcaleneHouse

256

Langmuir wave-packet generation from an electron beam propagating in the inhomogeneous solar wind  

SciTech Connect (OSTI)

Recent in-situ observations by the TDS instrument equipping the STEREO spacecraft revealed that large amplitude spatially localized Langmuir waves are frequent in the solar wind, and correlated with the presence of suprathermal electron beams during type III events or close to the electron foreshock. We briefly present the new theoretical model used to perform the study of these localized electrostatic waves, and show first results of simulations of the destabilization of Langmuir waves by a beam propagating in the inhomogeneous solar wind. The main results are that the destabilized waves are mainly focalized near the minima of the density profiles, and that the nonlinear interaction of the waves with the resonant particles enhances this focalization compared to a situation in which the only propagation effects are taken into account.

Zaslavsky, A.; Maksimovic, M. [LESIA, 5 Place Jules Janssen, 92195 Meudon (France); Volokitin, A. S. [IZMIRAN, Troitsk, Moscow Region (Russian Federation); Krasnoselskikh, V. V. [LPCEE, CNRS Orleans (France); Bale, S. D. [SSL, University of California, Berkerley (United States)

2010-03-25T23:59:59.000Z

257

Solar wind turbulence from MHD to sub-ion scales: high-resolution hybrid simulations  

E-Print Network [OSTI]

We present results from a high-resolution and large-scale hybrid (fluid electrons and particle-in-cell protons) two-dimensional numerical simulation of decaying turbulence. Two distinct spectral regions (separated by a smooth break at proton scales) develop with clear power-law scaling, each one occupying about a decade in wave numbers. The simulation results exhibit simultaneously several properties of the observed solar wind fluctuations: spectral indices of the magnetic, kinetic, and residual energy spectra in the magneto-hydrodynamic (MHD) inertial range along with a flattening of the electric field spectrum, an increase in magnetic compressibility, and a strong coupling of the cascade with the density and the parallel component of the magnetic fluctuations at sub-proton scales. Our findings support the interpretation that in the solar wind large-scale MHD fluctuations naturally evolve beyond proton scales into a turbulent regime that is governed by the generalized Ohm's law.

Franci, Luca; Matteini, Lorenzo; Landi, Simone; Hellinger, Petr

2015-01-01T23:59:59.000Z

258

Inertial-Range Reconnection in Magnetohydrodynamic Turbulence and in the Solar Wind  

E-Print Network [OSTI]

In situ spacecraft data on the solar wind show events identified as magnetic reconnection with outflows and apparent "`$X$-lines" $10^{3-4}$ times ion scales. To understand the role of turbulence at these scales, we make a case study of an inertial-range reconnection event in a magnetohydrodynamic (MHD) simulation. We observe stochastic wandering of field-lines in space, breakdown of standard magnetic flux-freezing due to Richardson dispersion, and a broadened reconnection zone containing many current sheets. The coarse-grain magnetic geometry is like large-scale reconnection in the solar wind, however, with a hyperbolic flux-tube or "$X$-line" extending over integral length-scales.

Lalescu, Cristian C; Eyink, Gregory L; Drivas, Theodore D; Vishniac, Ethan T; Lazarian, Alexander

2015-01-01T23:59:59.000Z

259

THE GENESIS SOLAR WIND CONCENTRATOR TARGET: MASS FRACTIONATION CHARACTERISED BY NE ISOTOPES  

SciTech Connect (OSTI)

The concentrator on Genesis provides samples of increased fluences of solar wind ions for precise determination of the oxygen isotopic composition of the solar wind. The concentration process caused mass fractionation as function of the radial target position. They measured the fractionation using Ne released by UV laser ablation along two arms of the gold cross from the concentrator target to compare measured Ne with modeled Ne. The latter is based on simulations using actual conditions of the solar wind during Genesis operation. Measured Ne abundances and isotopic composition of both arms agree within uncertainties indicating a radial symmetric concentration process. Ne data reveal a maximum concentration factor of {approx} 30% at the target center and a target-wide fractionation of Ne isotopes of 3.8%/amu with monotonously decreasing {sup 20}Ne/{sup 22}Ne ratios towards the center. The experimentally determined data, in particular the isotopic fractionation, differ from the modeled data. They discuss potential reasons and propose future attempts to overcome these disagreements.

WIENS, ROGER C. [Los Alamos National Laboratory; OLINGER, C. [Los Alamos National Laboratory; HEBER, V.S. [Los Alamos National Laboratory; REISENFELD, D.B. [Los Alamos National Laboratory; BURNETT, D.S. [Los Alamos National Laboratory; ALLTON, J.H. [Los Alamos National Laboratory; BAUR, H. [Los Alamos National Laboratory; WIECHERT, U. [Los Alamos National Laboratory; WIELER, R. [Los Alamos National Laboratory

2007-01-02T23:59:59.000Z

260

Turbulence in the solar wind: spectra from Voyager 2 data at 5 AU  

E-Print Network [OSTI]

The solar wind spectral properties are far from uniformity and evolve with the increasing distance from the sun. Most of the available spectra of solar wind turbulence were computed at 1 astronomical unit, while accurate spectra on wide frequency ranges at larger distances are still few. In this paper we consider solar wind spectra derived from the data recorded by the Voyager 2 mission during 1979 at about 5 AU from the sun. Voyager 2 data are an incomplete time series with a voids/signal ratio that typically increases as the spacecraft moves away from the sun (45% missing data in 1979), making the analysis challenging. In order to estimate the uncertainty of the spectral slopes, different methods are tested on synthetic turbulence signals with the same gap distribution as V2 data. Spectra of all variables show a power law scaling with exponents between -2.1 and -1.1, depending on frequency subranges. PDFs and correlations indicate that the flow has a significant intermittency.

Fraternale, F; Iovieno, M; Opher, M; Richardson, J D; Tordella, D

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydro solar wind" from the National Library of EnergyBeta (NLEBeta).
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261

SELF-CONSISTENT ION CYCLOTRON ANISOTROPY-BETA RELATION FOR SOLAR WIND PROTONS  

SciTech Connect (OSTI)

We derive a set of self-consistent marginally stable states for a system of ion-cyclotron waves propagating parallel to the large-scale magnetic field through a homogeneous proton-electron plasma. The proton distributions and the wave dispersions are related through the condition that no further ion-cyclotron resonant particle scattering or wave growth/damping may take place. The thermal anisotropy of the protons in these states therefore defines the threshold value for triggering the proton-cyclotron anisotropy instability. A number of recent papers have noted that the anisotropy of solar wind protons at 1 AU does not seem to be limited by the proton-cyclotron anisotropy threshold, even at low plasma beta. However, this puzzle seems to be due solely to the estimation of this anisotropy threshold under the assumption that the protons have a bi-Maxwellian distribution. We note that bi-Maxwellian distributions are never marginally stable to the resonant cyclotron interaction, so these estimates do not represent physically valid thresholds. The threshold anisotropies obtained from our marginally stable states are much larger, as a function of proton parallel beta, than the bi-Maxwellian estimates, and we show that the measured data remains below these more rigorous thresholds. Thus, the results of this paper resolve the apparent contradiction presented by the solar wind anisotropy observations at 1 AU: the bi-Maxwellian anisotropies are not rigorous thresholds, and so do not limit the proton distributions in the solar wind.

Isenberg, Philip A. [Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824 (United States); Maruca, Bennett A. [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Kasper, Justin C., E-mail: phil.isenberg@unh.edu, E-mail: bmaruca@ssl.berkeley.edu, E-mail: jkasper@cfa.harvard.edu [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States)

2013-08-20T23:59:59.000Z

262

Assessment of solar and wind energy resources in Ethiopia. I. Solar energy  

SciTech Connect (OSTI)

This paper describes how data from a variety of sources are merged to present new countrywide maps of the solar energy distribution over Ethiopia. The spatial coverage of stations with radiation data was found to be unsatisfactory for the purpose of a countrywide solar energy assessment exercise. Therefore, radiation had to be predicted from sunshine hours by employing empirical models. Using data from seven stations in Ethiopia, linear and quadratic correlation relationships between monthly mean daily solar radiation and sunshine hours per day have been developed. These regional models show a distinct improvement over previously employed countrywide models. To produce a national solar-energy distribution profile, a spatial extension of the radiation/sunshine relationships had to be carried out. To do this, the intercepts(a) and slopes(b) of each of the seven linear regression equations and another six from previous studies, completed in neighbouring Sudan, Kenya and Yemen, were used to interpolate the corresponding values to areas between them. Subsequent to these procedures, 142 stations providing only sunshine data were assigned their `appropriate` a and b values to estimate the amount of solar radiation received, which was then used to produce annual and monthly solar radiation distribution maps for Ethiopia. The results show that in all regions solar energy is an abundant resource. 19 refs., 11 figs., 4 tabs.

Drake, F.; Mulugetta, Y. [Univ. of Leeds (United Kingdom)] [Univ. of Leeds (United Kingdom)

1996-09-01T23:59:59.000Z

263

White Knights: Will wind and solar come to the rescue of a looming capacity gap from nuclear phase-out or  

E-Print Network [OSTI]

rapidly but faces grid integration problems; yet the cost of PV solar panels has plummeted thanks1 White Knights: Will wind and solar come to the rescue of a looming capacity gap from nuclear renewable power generation from wind and solar as a non- emitting alternative to replace a nuclear phase

Paris-Sud XI, Université de

264

FLOW SOURCES AND FORMATION LAWS OF SOLAR WIND N. A. LOTOVA1, V. N. OBRIDKO1, K. V. VLADIMIRSKII2, M. K. BIRD3 and  

E-Print Network [OSTI]

FLOW SOURCES AND FORMATION LAWS OF SOLAR WIND STREAMS N. A. LOTOVA1, V. N. OBRIDKO1, K. V. VLADIMIRSKII2, M. K. BIRD3 and P. JANARDHAN3, 1IZMIRAN, Troitsk, Moscow Region, 142190, Russia (e-mail: nlotova structure of the solar wind flow is studied in the main acceleration zone from 10 to 40 solar radii from

Padmanabhan, Janardhan

265

Assessing Vehicle Electricity Demand Impacts on California Electricity Supply  

E-Print Network [OSTI]

Biomass Geothermal Small Hydro Solar Wind Statewide CA-N CA-with a relatively small hydro resource require additionaldairy Photovoltaic Parabolic Small hydro Wind Hydro 1 Steam

McCarthy, Ryan W.

2009-01-01T23:59:59.000Z

266

The energy market is diversifying. In addition to traditional power sources, decision makers can choose among solar, wind, and  

E-Print Network [OSTI]

the steps of analyzing the energy outputs and economics of a solar, wind, or geothermal project. NREL power towers. SAM even calculates the value of saved energy from a domestic solar water heating systeminnovati n The energy market is diversifying. In addition to traditional power sources, decision

267

Isotopic Composition of Solar Wind Calcium: First in Situ Measurement by CELIAS/MTOF on Board SOHO  

E-Print Network [OSTI]

We present first results on the Ca isotopic abundances derived from the high resolution Mass Time-of-Flight (MTOF) spectrometer of the charge, element, and isotope analysis system (CELIAS) experiment on board the Solar and Heliospheric Observatory (SOHO). We obtain isotopic ratios 40Ca/42Ca = (128+-47) and 40Ca/44Ca = (50+-8), consistent with terrestrial values. This is the first in situ determination of the solar wind calcium isotopic composition and is important for studies of stellar modeling and solar system formation since the present-day solar Ca isotopic abundances are unchanged from their original isotopic composition in the solar nebula.

R. Kallenbach; F. M. Ipavich; P. Bochsler; S. Hefti; P. Wurz; M. R. Aellig; A. B. Galvin; J. Geiss; F. Gliem; G. Gloeckler; H. Grunwaldt; M. Hilchenbach; D. Hovestadt; B. Klecker

1998-02-07T23:59:59.000Z

268

Characterization of the Turbulent Magnetic Integral Length in the Solar Wind: From 0.3 to 5 Astronomical Units  

E-Print Network [OSTI]

The solar wind is a structured and complex system, in which the fields vary strongly over a wide range of spatial and temporal scales. As an example, the turbulent activity in the wind affects the evolution in the heliosphere of the integral turbulent scale or correlation length [{\\lambda}], usually associated with the breakpoint in the turbulent-energy spectrum that separates the inertial range from the injection range. This large variability of the fields demands a statistical description of the solar wind. In this work, we study the probability distribution function (PDF) of the magnetic autocorrelation lengths observed in the solar wind at different distances from the Sun. We use observations from Helios, ACE, and Ulysses spacecraft. We distinguish between the usual solar wind and one of its transient components (Interplanetary Coronal Mass Ejections, ICMEs), and study also solar wind samples with low and high proton beta [\\beta_p ]. We find that in the last 3 regimes the PDF of {\\lambda} is a log-normal ...

Ruiz, M E; Matthaeus, W H; Weygand, J M

2014-01-01T23:59:59.000Z

269

Hydro Capital Asset Manager  

Broader source: Energy.gov [DOE]

This position is located in Federal Hydro Projects, Generation Asset Management, Power Services. Additional vacancies may be filled through this vacancy announcement or if they become available.

270

1.Bisi, M.M., Fallows, R.A., Breen, A.R., O'Neill, I.J. Interplanetary Scintillation Observations of Stream Interaction Regions in the Solar Wind. Solar Physics  

E-Print Network [OSTI]

Observations of Stream Interaction Regions in the Solar Wind. Solar Physics 261, 149-172 (2010). 2.Eastwood, J Journal 708, L95-L99 (2010). 3.Gosain, S., Schmieder, B. Estimation of width and inclination of a filament Physics online 6 (2010). 7.Lavraud, B., and 22 colleagues Statistics of counter-streaming solar wind

Christian, Eric

271

Impact of dispersed solar and wind systems on electric distribution planning and operation  

SciTech Connect (OSTI)

Small-scale dispersed solar photovoltaic and wind generation (DSW) will affect the generation, transmission, and distribution systems of an electric utility. This study examines the technical and economic impacts of dispersing DSW devices within the distribution system. Dispersed intermittent generation is included. Effects of DSW devices on capital investments, reliability, operating and maintenance costs, protection requirements, and communication and control requirements are examined. A DSW operation model is developed to help determine the dependable capacity of fluctuating solar photovoltaic and wind generation as part of the distribution planning process. Specific case studies using distribution system data and renewable resource data for Southern California Edison Company and Consumers Power Company are analyzed to gain insights into the effects of interconnecting DSW devices. The DSW devices were found to offer some distribution investment savings, depending on their availability during peak loads. For a summer-peaking utility, for example, dispersing photovoltaic systems is more likely to defer distribution capital investments than dispersing wind systems. Dispersing storage devices to increase DSW's dependable capacity for distribution systems needs is not economically attractive. Substation placement of DSW and storage devices is found to be more cost effective than feeder or customer placement. Examination of the effects of DSW on distribution system operation showed that small customer-owned DSW devices are not likely to disrupt present time-current distribution protection coordination. Present maintenance work procedures, are adequate to ensure workmen's safety. Regulating voltages within appropriate limits will become more complex with intermittent generation along the distribution feeders.

Boardman, R.W.; Patton, R.; Curtice, D.H.

1981-02-01T23:59:59.000Z

272

Evolution of turbulence in the expanding solar wind, a numerical study  

E-Print Network [OSTI]

We study the evolution of turbulence in the solar wind by solving numerically the full 3D magneto-hydrodynamic (MHD) equations embedded in a radial mean wind. The corresponding equations (expanding box model or EBM) have been considered earlier but never integrated in 3D simulations. Here, we follow the development of turbulence from 0.2 AU up to about 1.5 AU. Starting with isotropic spectra scaling as $k^{-1}$, we observe a steepening toward a $k^{-5/3}$ scaling in the middle of the wavenumber range and formation of spectral anisotropies. The advection of a plasma volume by the expanding solar wind causes a non-trivial stretching of the volume in directions transverse to radial and the selective decay of the components of velocity and magnetic fluctuations. These two effects combine to yield the following results. (i) Spectral anisotropy: gyrotropy is broken, and the radial wavevectors have most of the power. (ii) Coherent structures: radial streams emerge that resemble the observed microjets. (iii) Energy s...

Dong, Yue; Grappin, Roland

2014-01-01T23:59:59.000Z

273

Whistler mode waves and the electron heat flux in the solar wind: Cluster observations  

E-Print Network [OSTI]

The nature of the magnetic field fluctuations in the solar wind between the ion and electron scales is still under debate. Using the Cluster/STAFF instrument, we make a survey of the power spectral density and of the polarization of these fluctuations at frequencies $f\\in[1,400]$ Hz, during five years (2001-2005), when Cluster was in the free solar wind. In $\\sim 10\\%$ of the selected data, we observe narrow-band, right-handed, circularly polarized fluctuations, with wave vectors quasi-parallel to the mean magnetic field, superimposed on the spectrum of the permanent background turbulence. We interpret these coherent fluctuations as whistler mode waves. The life time of these waves varies between a few seconds and several hours. Here we present, for the first time, an analysis of long-lived whistler waves, i.e. lasting more than five minutes. We find several necessary (but not sufficient) conditions for the observation of whistler waves, mainly a low level of the background turbulence, a slow wind, a relative...

Lacombe, Catherine; Matteini, Lorenzo; Santolik, Ondrej; Cornilleau-Wehrlin, Nicole; Mangeney, Andre; de Conchy, Yvonne; Maksimovic, Milan

2014-01-01T23:59:59.000Z

274

STOCHASTIC HEATING, DIFFERENTIAL FLOW, AND THE ALPHA-TO-PROTON TEMPERATURE RATIO IN THE SOLAR WIND  

SciTech Connect (OSTI)

We extend previous theories of stochastic ion heating to account for the motion of ions along the magnetic field B . We derive an analytic expression for the temperature ratio T{sub i}/T{sub p} in the solar wind assuming that stochastic heating is the dominant ion heating mechanism, where T{sub i} is the perpendicular temperature of species i and T{sub p} is the perpendicular proton temperature. This expression describes how T{sub i}/T{sub p} depends upon U{sub i} and ?{sub ?p}, where U{sub i} is the average velocity along B of species i in the proton frame and ?{sub ?p} is the ratio of the parallel proton pressure to the magnetic pressure, which we take to be ?< 1. We compare our model with previously published measurements of alpha particles and protons from the Wind spacecraft. We find that stochastic heating offers a promising explanation for the dependence of T{sub ?}/T{sub p} on U{sub ?} and ?{sub ?p} when the fractional cross helicity and Alfvén ratio at the proton-gyroradius scale have values that are broadly consistent with solar-wind measurements. We also predict how the temperatures of other ion species depend on their drift speeds.

Chandran, B. D. G.; Verscharen, D.; Isenberg, P. A.; Bourouaine, S. [Space Science Center and Department of Physics, University of New Hampshire, Durham, NH 03824 (United States); Quataert, E. [Astronomy Department and Theoretical Astrophysics Center, 601 Campbell Hall, The University of California, Berkeley, CA 94720 (United States); Kasper, J. C., E-mail: benjamin.chandran@unh.edu, E-mail: s.bourouaine@unh.edu, E-mail: phil.isenberg@unh.edu, E-mail: daniel.verscharen@unh.edu, E-mail: eliot@astro.berkeley.edu, E-mail: jkasper@cfa.harvard.edu [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States)

2013-10-10T23:59:59.000Z

275

China energy, environment, and climate study: Background issues paper  

E-Print Network [OSTI]

Power Generation Resource Small Hydro Criteria for Selectioncapacity in 2000 (mainly small hydro; excludes large hydro),Generation, MW Technology Small Hydro Wind Solar PV Solar

Sinton, Jonathan E.; Fridley, David G.; Logan, Jeffrey; Guo, Yuan; Wang, Bangcheng; Xu, Qing

2000-01-01T23:59:59.000Z

276

On the relationship of the 27-day variations of the solar wind velocity and galactic cosmic ray intensity in minimum epoch of solar activity  

E-Print Network [OSTI]

We study the relationship of the 27-day variation of the galactic cosmic ray intensity with similar changes of the solar wind velocity and the interplanetary magnetic field based on the experimental data for the Bartels rotation period 2379 of 23 November 2007-19 December 2007. We develop a three dimensional (3-D) model of the 27-day variation of galactic cosmic ray intensity based on the heliolongitudinally dependent solar wind velocity. A consistent, divergence-free interplanetary magnetic field is derived by solving Maxwells equations with a heliolongitudinally dependent 27-day variation of the solar wind velocity reproducing in situ observations. We consider two types of 3-D models of the 27-day variation of galactic cosmic ray intensity - (1) with a plane heliospheric neutral sheet, and (2)- with the sector structure of the interplanetary magnetic field. The theoretical calculation shows that the sector structure does not influence significantly on the 27-day variation of galactic cosmic ray intensity as...

Alania, M V; Wawrzynczak, A

2015-01-01T23:59:59.000Z

277

Radial evolution of intermittency of density fluctuations in the fast solar wind  

E-Print Network [OSTI]

We study the radial evolution of intermittency of density fluctuations in the fast solar wind. The study is performed analyzing the plasma density measurements provided by Helios 2 in the inner heliosphere between $0.3$ and $0.9$ AU. The analysis is carried out by means of a complete set of diagnostic tools, including the flatness factor at different time scales to estimate intermittency, the Kolmogorov-Smirnov test to estimate the degree of intermittency, and the Fourier transform to estimate the power spectral densities of these fluctuations. Density fluctuations within fast wind are rather intermittent and their level of intermittency, together with the amplitude of intermittent events, decreases with distance from the Sun, at odds with intermittency of both magnetic field and all the other plasma parameters. Furthermore, the intermittent events are strongly correlated, exhibiting temporal clustering. This indicates that the mechanism underlying their generation departs from a time-varying Poisson process....

Bruno, R; Primavera, L; Pietropaolo, E; D'Amicis, R; Sorriso-Valvo, L; Carbone, V; Malara, F; Veltri, P

2014-01-01T23:59:59.000Z

278

The slow-mode nature of compressible wave power in solar wind turbulence  

E-Print Network [OSTI]

We use a large, statistical set of measurements from the Wind spacecraft at 1 AU, and supporting synthetic spacecraft data based on kinetic plasma theory, to show that the compressible component of inertial range solar wind turbulence is primarily in the kinetic slow mode. The zero-lag cross correlation C(delta n, delta B_parallel) between proton density fluctuations delta n and the field-aligned (compressible) component of the magnetic field delta B_parallel is negative and close to -1. The typical dependence of C(delta n,delta B_parallel) on the ion plasma beta_i is consistent with a spectrum of compressible wave energy that is almost entirely in the kinetic slow mode. This has important implications for both the nature of the density fluctuation spectrum and for the cascade of kinetic turbulence to short wavelengths, favoring evolution to the kinetic Alfven wave mode rather than the (fast) whistler mode.

Howes, G G; Klein, K G; Chen, C H K; Salem, C S; TenBarge, J M

2011-01-01T23:59:59.000Z

279

Statement of Interest in a New Project, in response to PPARC call of April 26th FHIRN: A next-generation radio network for exploring the 3-dimensional solar wind  

E-Print Network [OSTI]

-situ. The heliospheric white-light imagers to be carried on STEREO should extend the ability to estimate solar wind-generation radio network for exploring the 3-dimensional solar wind Future Heliospheric Imaging Radio Network The solar wind is a supersonically-expanding extension of the solar atmosphere into interplanetary space

280

PSW1-C0.2-D0.1-E2.4-F0.1-PSRB2-0021-02 SOLAR WIND-DRIVEN ELECTRON RADIATION BELT  

E-Print Network [OSTI]

linear filters, to remove unwanted "col- ored noise" from solar wind and radiation belt electron data output might be achieved with: 1) additional simultaneous solar wind inputs; 2) more sophisticated quality of solar, solar-wind, and magnetospheric data that has become available in recent years has led

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


281

Integrating Wind and Solar Energy in the U.S. Bulk Power System: Lessons from Regional Integration Studies  

SciTech Connect (OSTI)

Two recent studies sponsored by the U.S. Department of Energy (DOE) and the National Renewable Energy Laboratory (NREL) have examined the impacts of integrating high penetrations of wind and solar energy on the Eastern and Western electric grids. The Eastern Wind Integration and Transmission Study (EWITS), initiated in 2007, examined the impact on power system operations of reaching 20% to 30% wind energy penetration in the Eastern Interconnection. The Western Wind and Solar Integration Study (WWSIS) examined the operational implications of adding up to 35% wind and solar energy penetration to the Western Interconnect. Both studies examined the costs of integrating variable renewable energy generation into the grid and transmission and operational changes that might be necessary to address higher penetrations of wind or solar generation. This paper identifies key insights from these regional studies for integrating high penetrations of renewables in the U.S. electric grid. The studies share a number of key findings, although in some instances the results vary due to differences in grid operations and markets, the geographic location of the renewables, and the need for transmission.

Bird, L.; Lew, D.

2012-09-01T23:59:59.000Z

282

Analysis of Cycling Costs in Western Wind and Solar Integration Study  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study (WWSIS) examined the impact of up to 30% penetration of variable renewable generation on the Western Electricity Coordinating Council system. Although start-up costs and higher operating costs because of part-load operation of thermal generators were included in the analysis, further investigation of additional costs associated with thermal unit cycling was deemed worthwhile. These additional cycling costs can be attributed to increases in capital as well as operations and maintenance costs because of wear and tear associated with increased unit cycling. This analysis examines the additional cycling costs of the thermal fleet by leveraging the results of WWSIS Phase 1 study.

Jordan, G.; Venkataraman, S.

2012-06-01T23:59:59.000Z

283

NREL Confirms Large Potential for Grid Integration of Wind, Solar Power (Fact Sheet)  

SciTech Connect (OSTI)

To fully harvest the nation's bountiful wind and solar resources, it is critical to know how much electrical power from these renewable resources could be integrated reliably into the grid. To inform the discussion about the potential of such variable sources, the National Renewable Energy Laboratory (NREL) launched two key regional studies, examining the east and west sections of the U.S. power grid. The studies show that it is technically possible for U.S. power systems to integrate 20%-35% renewable electricity if infrastructure and operational improvements can be made.

Not Available

2011-10-01T23:59:59.000Z

284

Probing the Solar Wind Acceleration Region with the Sun--Grazing Comet C/2002 S2  

E-Print Network [OSTI]

Comet C/2002 S2, a member of the Kreutz family of Sungrazing comets, was discovered in white light images of the SOHO/LASCO coronagraph on 2002 September 18 and observed in \\hi\\, \\lya\\, emission by the SOHO/UVCS instrument at four different heights as it approached the Sun. The \\hi\\, \\lya\\, line profiles detected by UVCS are analyzed to determine the spectral parameters: line intensity, width and Doppler shift with respect to the coronal background. Two dimensional comet images of these parameters are reconstructed at the different heights. A novel aspect of the observations of this sungrazing comet data is that, whereas the emission from the most of the tail is blue--shifted, that along one edge of the tail is red--shifted. We attribute these shifts to a combination of solar wind speed and interaction with the magnetic field. In order to use the comet to probe the density, temperature and speed of the corona and solar wind through which it passes, as well as to determine the outgassing rate of the comet, we ...

Giordano, Silvio; Lamy, Philippe; Uzzo, Michael; Dobrzycka, Danuta

2014-01-01T23:59:59.000Z

285

Use of Solar and Wind as a Physical Hedge against Price Variability within a Generation Portfolio  

SciTech Connect (OSTI)

This study provides a framework to explore the potential use and incremental value of small- to large-scale penetration of solar and wind technologies as a physical hedge against the risk and uncertainty of electricity cost on multi-year to multi-decade timescales. Earlier studies characterizing the impacts of adding renewable energy (RE) to portfolios of electricity generators often used a levelized cost of energy or simplified net cash flow approach. In this study, we expand on previous work by demonstrating the use of an 8760 hourly production cost model (PLEXOS) to analyze the incremental impact of solar and wind penetration under a wide range of penetration scenarios for a region in the Western U.S. We do not attempt to 'optimize' the portfolio in any of these cases. Rather we consider different RE penetration scenarios, that might for example result from the implementation of a Renewable Portfolio Standard (RPS) to explore the dynamics, risk mitigation characteristics and incremental value that RE might add to the system. We also compare the use of RE to alternative mechanisms, such as the use of financial or physical supply contracts to mitigate risk and uncertainty, including consideration of their effectiveness and availability over a variety of timeframes.

Jenkin, T.; Diakov, V.; Drury, E.; Bush, B.; Denholm, P.; Milford, J.; Arent, D.; Margolis, R.; Byrne, R.

2013-08-01T23:59:59.000Z

286

Electrostatic ion-acoustic-like instabilities in the solar wind with a backstreaming alpha particle beam  

SciTech Connect (OSTI)

Nonlinear electrostatic instabilities have been shown to occur frequently and under very different conditions in plasma with two ion beams such as the fast solar wind. These instabilities can be triggered when the phase velocity of electrostatic ion-acoustic waves propagating forward and backward relative to the interplanetary magnetic field overlaps due to the presence of a finite amplitude of circularly polarized wave. The instabilities can be triggered by waves supported by the same ion component, or by waves supported by different ion components. By assuming a beam of alpha particles moving backward relative to the external magnetic field, as observed in some events in the fast solar wind, it is shown that a very small negative drift velocity of the alpha particle beam relative to the core plasma--a few percent of the local Alfven velocity--can trigger a very rich variety of nonlinear electrostatic acousticlike instabilities. Their growth rates can be rather large and they persist for larger negative alpha particles drift velocities and temperatures.

Gomberoff, L. [Departamento de Fisica, Facultad de Ciencias, Universidad de Chile, Santiago (Chile); Gomberoff, K. [Department of Physics, Technion, Haifa 32000 (Israel); Deutsch, A. [Rafael, P.O. Box 2250, Haifa 31021 (Israel)

2010-06-15T23:59:59.000Z

287

Repetitive substorms caused by Alfvenic waves of the interplanetary magnetic field during high-speed solar wind streams  

E-Print Network [OSTI]

, but they may be locally generated from stream-stream interaction effects or amplified Alfve´n waves originating-speed solar wind streams D.-Y. Lee,1 L. R. Lyons,2 K. C. Kim,1 J.-H. Baek,3 K.-H. Kim,3 H.-J. Kim,1 J. Weygand wind streams, J. Geophys. Res., 111, A12214, doi:10.1029/2006JA011685. 1. Introduction [2] During

Lyons, Larry

288

Comment on "Air Emissions Due to Wind and Solar Power" and Supporting Information  

E-Print Network [OSTI]

Inc. , 2006 Minnesota Wind Integration Study, Volume I; Min-Parsons, B. Utility wind integration and operating impactthe 2005 New York Wind Integration Study (3), the 2006

Mills, Andrew D.

2011-01-01T23:59:59.000Z

289

Markets to Facilitate Wind and Solar Energy Integration in the Bulk Power Supply: An IEA Task 25 Collaboration; Preprint  

SciTech Connect (OSTI)

Wind and solar power will give rise to challenges in electricity markets regarding flexibility, capacity adequacy, and the participation of wind and solar generators to markets. Large amounts of wind power will have impacts on bulk power system markets and electricity prices. If the markets respond to increased wind power by increasing investments in low-capital, high-cost or marginal-cost power, the average price may remain in the same range. However, experiences so far from Denmark, Germany, Spain, and Ireland are such that the average market prices have decreased because of wind power. This reduction may result in additional revenue insufficiency, which may be corrected with a capacity market, yet capacity markets are difficult to design. However, the flexibility attributes of the capacity also need to be considered. Markets facilitating wind and solar integration will include possibilities for trading close to delivery (either by shorter gate closure times or intraday markets). Time steps chosen for markets can enable more flexibility to be assessed. Experience from 5- and 10-minute markets has been encouraging.

Milligan, M.; Holttinen, H.; Soder, L.; Clark, C.; Pineda, I.

2012-09-01T23:59:59.000Z

290

A PARALLEL-PROPAGATING ALFVENIC ION-BEAM INSTABILITY IN THE HIGH-BETA SOLAR WIND  

SciTech Connect (OSTI)

We investigate the conditions under which parallel-propagating Alfven/ion-cyclotron waves are driven unstable by an isotropic (T{sub {alpha}} = T{sub Parallel-To {alpha}}) population of alpha particles drifting parallel to the magnetic field at an average speed U{sub {alpha}} with respect to the protons. We derive an approximate analytic condition for the minimum value of U{sub {alpha}} needed to excite this instability and refine this result using numerical solutions to the hot-plasma dispersion relation. When the alpha-particle number density is {approx_equal} 5% of the proton number density and the two species have similar thermal speeds, the instability requires that {beta}{sub p} {approx}> 1, where {beta}{sub p} is the ratio of the proton pressure to the magnetic pressure. For 1 {approx}< {beta}{sub p} {approx}< 12, the minimum U{sub {alpha}} needed to excite this instability ranges from 0.7v{sub A} to 0.9v{sub A}, where v{sub A} is the Alfven speed. This threshold is smaller than the threshold of {approx_equal} 1.2v{sub A} for the parallel magnetosonic instability, which was previously thought to have the lowest threshold of the alpha-particle beam instabilities at {beta}{sub p} {approx}> 0.5. We discuss the role of the parallel Alfvenic drift instability for the evolution of the alpha-particle drift speed in the solar wind. We also analyze measurements from the Wind spacecraft's Faraday cups and show that the U{sub {alpha}} values measured in solar-wind streams with T{sub {alpha}} Almost-Equal-To T{sub Parallel-To {alpha}} are approximately bounded from above by the threshold of the parallel Alfvenic instability.

Verscharen, Daniel; Bourouaine, Sofiane; Chandran, Benjamin D. G. [Space Science Center, University of New Hampshire, Durham, NH 03824 (United States); Maruca, Bennett A., E-mail: daniel.verscharen@unh.edu, E-mail: s.bourouaine@unh.edu, E-mail: benjamin.chandran@unh.edu, E-mail: bmaruca@ssl.berkeley.edu [Space Science Laboratory, University of California, Berkeley, CA 94720 (United States)

2013-08-10T23:59:59.000Z

291

A high-throughput, high-resolution spectrometer for mapping the heliopause and 3-D Solar Wind using He+ 30.4nm  

E-Print Network [OSTI]

A high-throughput, high-resolution spectrometer for mapping the heliopause and 3-D Solar Wind using Entrance slit farm with ~ 1000 slits Photon counting imager Concave grating used near normal incidence >> Need a higher throughput diffuse EUV spectrometer solar wind respond to coronal

California at Berkeley, University of

292

BENDIX SYSTEMS DIVISION ANN A R8 oR, M1CH NO. REV.NO. Solar Wind Programming for  

E-Print Network [OSTI]

experiment program decommutates its own data, organizes it, processes it, and prepares it for output. Specifically, for Solar Wind, there is provision (using sense switches) for allowing or inhibiting the outputBENDIX SYSTEMS DIVISION ANN A R8 oR, M1CH NO. REV.NO. Solar Wind Programming for I I DPS 2000

Rathbun, Julie A.

293

A New Model for the Prediction of Dst on the Basis of the Solar Wind Space Sciences Lab., University of California, Berkeley  

E-Print Network [OSTI]

1 A New Model for the Prediction of Dst on the Basis of the Solar Wind M. Temerin Space Sciences Lab., University of California, Berkeley Xinlin Li Lab. for Atmospheric and Space Physics, University on solar wind data for the years 1995-1999 gives a good fit with a prediction efficiency of 88%, a linear

Li, Xinlin

294

Global MHD modeling of the impact of a solar wind pressure change Kristi A. Keller, Michael Hesse, Maria Kuznetsova, Lutz Rastatter, and Therese Moretto  

E-Print Network [OSTI]

Global MHD modeling of the impact of a solar wind pressure change Kristi A. Keller, Michael Hesse of Michigan, Ann Arbor, Michigan, USA Received 26 February 2001; revised 21 December 2001; accepted 21 December 2001; published 23 July 2002. [1] A sudden increase in the solar wind dynamic pressure compresses

De Zeeuw, Darren L.

295

Detecting the oldest geodynamo and attendant shielding from the solar wind: Implications for habitability  

E-Print Network [OSTI]

The onset and nature of the earliest geomagnetic field is important for understanding the evolution of the core, atmosphere and life on Earth. A record of the early geodynamo is preserved in ancient silicate crystals containing minute magnetic inclusions. These data indicate the presence of a geodynamo during the Paleoarchean, between 3.4 and 3.45 billion years ago. While the magnetic field sheltered Earth's atmosphere from erosion at this time, standoff of the solar wind was greatly reduced, and similar to that during modern extreme solar storms. These conditions suggest that intense radiation from the young Sun may have modified the atmosphere of the young Earth by promoting loss of volatiles, including water. Such effects would have been more pronounced if the field were absent or very weak prior to 3.45 billion years ago, as suggested by some models of lower mantle evolution. The frontier is thus trying to obtain geomagnetic field records that are >>3.45 billion-years-old, as well as constraining solar wi...

Tarduno, John A; Mamajek, Eric E

2015-01-01T23:59:59.000Z

296

The need for high density energy storage for wind turbine and solar power has proven to be a  

E-Print Network [OSTI]

1 The need for high density energy storage for wind turbine and solar power has proven cost of these components but also considerably improve their lifetime and reliability as it removes. New breakthrough for single-layer ceramic capacitors with high performance #12;2 Benefits ANU has

Botea, Adi

297

Three-dimensional multispecies MHD studies of the solar wind interaction with Mars in the presence of crustal fields  

E-Print Network [OSTI]

Three-dimensional multispecies MHD studies of the solar wind interaction with Mars in the presence of Michigan, Ann Arbor, Michigan, USA K. G. Powell Aerospace Engineering Department, University of Michigan, Ann Arbor, Michigan, USA Received 30 January 2002; revised 5 April 2002; accepted 13 May 2002

De Zeeuw, Darren L.

298

Alternative Approaches to Calculate Benefits of an Energy Imbalance Market With Wind and Solar Energy: Preprint  

SciTech Connect (OSTI)

The anticipated increase in variable generation in the Western Interconnection over the next several years has raised concerns about how to maintain system balance, especially in smaller Balancing Authority Areas (BAAs). Given renewable portfolio standards in the West, it is possible that more than 50 gigawatts of wind capacity will be installed by 2020. Significant quantities of solar generation are likely to be added as well. The consequent increase in variability and uncertainty that must be managed by the conventional generation fleet and responsive loads has resulted in a proposal for an Energy Imbalance Market (EIM). This paper extends prior work to estimate the reserve requirements for regulation, spinning, and non-spinning reserves with and without the EIM. We also discuss alternative approaches to allocating reserve requirements and show that some apparently attractive allocation methods have undesired consequences.

Kirby, B.; King, J.; Milligan, M.

2012-06-01T23:59:59.000Z

299

Grass roots technology and energy policy: Solar ovens and wind turbines in Kenya  

SciTech Connect (OSTI)

Kenya is said to be an ideal site for projects that promote renewable energy sources since it devotes over forty percent of its GNP to the purchase of imported coal and oil. The author presents a chronology of solar oven projects in Kenya and suggests that success of the program will be measured by the number of people who move on to wind turbine use. He discusses the role of renewable energy technology in reducing greenhouse gases and closes by recommending that industrialized nations that produce large amounts of carbon dioxide provide aid to develop projects that reduce carbon dioxide elsewhere in the world. At the same time they would receive credit towards their carbon dioxide quotas.

Kammen, D.M. [Harvard Univ., Cambridge, MA (United States). Dept. of Physics

1992-12-31T23:59:59.000Z

300

LIMITS ON ALPHA PARTICLE TEMPERATURE ANISOTROPY AND DIFFERENTIAL FLOW FROM KINETIC INSTABILITIES: SOLAR WIND OBSERVATIONS  

SciTech Connect (OSTI)

Previous studies have shown that the observed temperature anisotropies of protons and alpha particles in the solar wind are constrained by theoretical thresholds for pressure and anisotropy driven instabilities such as the Alfvén/ion-cyclotron (A/IC) and fast-magnetosonic/whistler (FM/W) instabilities. In this Letter, we use a long period of in situ measurements provided by the Wind spacecraft's Faraday cups to investigate the combined constraint on the alpha proton differential flow velocity and the alpha particle temperature anisotropy due to A/IC and FM/W instabilities. We show that the majority of the data are constrained to lie within the region of parameter space in which A/IC and FM/W waves are either stable or have extremely low growth rates. In the minority of observed cases in which the growth rate of the A/IC (FM/W) instability is comparatively large, we find relatively higher values of T {sub ?}/T {sub p} (T {sub ??}/T {sub ?p}) when the alpha proton differential flow velocity is small, where T {sub ?} and T {sub p} (T {sub ??} and T {sub ?p}) are the perpendicular (parallel) temperatures of alpha particles and protons. We conjecture that this observed feature might arise from preferential alpha particle heating which can drive the alpha particles beyond the instability thresholds.

Bourouaine, Sofiane; Verscharen, Daniel; Chandran, Benjamin D. G. [Space Science Center, University of New Hampshire, Durham, NH 03824 (United States)] [Space Science Center, University of New Hampshire, Durham, NH 03824 (United States); Maruca, Bennett A. [Space Science Laboratory, University of California, Berkeley, CA 94720 (United States)] [Space Science Laboratory, University of California, Berkeley, CA 94720 (United States); Kasper, Justin C., E-mail: s.bourouaine@unh.edu [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States)

2013-11-01T23:59:59.000Z

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


301

Dust Detection by the Wave Instrument on STEREO: Nanoparticles Picked up by the Solar Wind?  

E-Print Network [OSTI]

including the large solar panels which contribute to amaterial, kap- ton, solar panel mylar, and a few metallic

2009-01-01T23:59:59.000Z

302

ESTABLISHING A CONNECTION BETWEEN ACTIVE REGION OUTFLOWS AND THE SOLAR WIND: ABUNDANCE MEASUREMENTS WITH EIS/HINODE  

SciTech Connect (OSTI)

One of the most interesting discoveries from Hinode is the presence of persistent high-temperature high-speed outflows from the edges of active regions (ARs). EUV imaging spectrometer (EIS) measurements indicate that the outflows reach velocities of 50 km s{sup -1} with spectral line asymmetries approaching 200 km s{sup -1}. It has been suggested that these outflows may lie on open field lines that connect to the heliosphere, and that they could potentially be a significant source of the slow speed solar wind. A direct link has been difficult to establish, however. We use EIS measurements of spectral line intensities that are sensitive to changes in the relative abundance of Si and S as a result of the first ionization potential (FIP) effect, to measure the chemical composition in the outflow regions of AR 10978 over a 5 day period in 2007 December. We find that Si is always enhanced over S by a factor of 3-4. This is generally consistent with the enhancement factor of low FIP elements measured in situ in the slow solar wind by non-spectroscopic methods. Plasma with a slow wind-like composition was therefore flowing from the edge of the AR for at least 5 days. Furthermore, on December 10 and 11, when the outflow from the western side was favorably oriented in the Earth direction, the Si/S ratio was found to match the value measured a few days later by the Advanced Composition Explorer/Solar Wind Ion Composition Spectrometer. These results provide strong observational evidence for a direct connection between the solar wind, and the coronal plasma in the outflow regions.

Brooks, David H. [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States); Warren, Harry P., E-mail: dhbrooks@ssd5.nrl.navy.mil [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States)

2011-01-20T23:59:59.000Z

303

VELOCITY-SHEAR-INDUCED MODE COUPLING IN THE SOLAR ATMOSPHERE AND SOLAR WIND: IMPLICATIONS FOR PLASMA HEATING AND MHD TURBULENCE  

SciTech Connect (OSTI)

We analytically consider how velocity shear in the corona and solar wind can cause an initial Alfven wave to drive up other propagating signals. The process is similar to the familiar coupling into other modes induced by non-WKB refraction in an inhomogeneous plasma, except here the refraction is a consequence of velocity shear. We limit our discussion to a low-beta plasma, and ignore couplings into signals resembling the slow mode. If the initial Alfven wave is propagating nearly parallel to the background magnetic field, then the induced signals are mainly a forward-going (i.e., propagating in the same sense as the original Alfven wave) fast mode, and a driven signal propagating like a forward-going Alfven wave but polarized like the fast mode; both signals are compressive and subject to damping by the Landau resonance. For an initial Alfven wave propagating obliquely with respect to the magnetic field, the induced signals are mainly forward- and backward-going fast modes, and a driven signal propagating like a forward-going Alfven wave but polarized like the fast mode; these signals are all compressive and subject to damping by the Landau resonance. A backward-going Alfven wave, thought to be important in the development of MHD turbulence, is also produced, but it is very weak. However, we suggest that for oblique propagation of the initial Alfven wave the induced fast-polarized signal propagating like a forward-going Alfven wave may interact coherently with the initial Alfven wave and distort it at a strong-turbulence-like rate.

Hollweg, Joseph V.; Chandran, Benjamin D. G. [Space Science Center, Morse Hall, University of New Hampshire, Durham, NH 03824 (United States); Kaghashvili, Edisher Kh., E-mail: joe.hollweg@unh.edu, E-mail: ekaghash@aer.com, E-mail: benjamin.chandran@unh.edu [Atmospheric and Environmental Research, A Verisk Analytics Company, 131 Hartwell Avenue, Lexington, MA 02421 (United States)

2013-06-01T23:59:59.000Z

304

HydroPulse Drilling  

SciTech Connect (OSTI)

Tempress HydroPulse{trademark} tool increases overbalanced drilling rates by generating intense suction pulses at the drill bit. This report describes the operation of the tool; results of pressure drilling tests, wear tests and downhole drilling tests; and the business case for field applications. The HydroPulse{trademark} tool is designed to operate on weighted drilling mud at conventional flow rates and pressures. Pressure drilling tests confirm that the HydroPulse{trademark} tool provides 33% to 200% increased rate of penetration. Field tests demonstrated conventional rotary and mud motor drilling operations. The tool has been operated continuous for 50 hours on weighted mud in a wear test stand. This level of reliability is the threshold for commercial application. A seismic-while-drilling version of the tool was also developed and tested. This tool was used to demonstrate reverse vertical seismic profiling while drilling an inclined test well with a PDC bit. The primary applications for the HydroPulse{trademark} tool are deep onshore and offshore drilling where rate of penetration drives costs. The application of the seismic tool is vertical seismic profiling-while-drilling and look-ahead seismic imaging while drilling.

J.J. Kolle

2004-04-01T23:59:59.000Z

305

OBSERVATIONAL TEST OF STOCHASTIC HEATING IN LOW-{beta} FAST-SOLAR-WIND STREAMS  

SciTech Connect (OSTI)

Spacecraft measurements show that protons undergo substantial perpendicular heating during their transit from the Sun to the outer heliosphere. In this paper, we use Helios 2 measurements to investigate whether stochastic heating by low-frequency turbulence is capable of explaining this perpendicular heating. We analyze Helios 2 magnetic field measurements in low-{beta} fast-solar-wind streams between heliocentric distances r = 0.29 AU and r = 0.64 AU to determine the rms amplitude of the fluctuating magnetic field, {delta}B{sub p}, near the proton gyroradius scale {rho}{sub p}. We then evaluate the stochastic heating rate Q{sub stoch} using the measured value of {delta}B{sub p} and a previously published analytical formula for Q{sub stoch}. Using Helios measurements we estimate the ''empirical'' perpendicular heating rate Q{sub Up-Tack emp} = (k{sub B}/m{sub p}) BV (d/dr) (T{sub Up-Tack p}/B) that is needed to explain the T{sub p} profile. We find that Q{sub stoch} {approx} Q{sub emp}, but only if a key dimensionless constant appearing in the formula for Q{sub stoch} lies within a certain range of values. This range is approximately the same throughout the radial interval that we analyze and is consistent with the results of numerical simulations of the stochastic heating of test particles in reduced magnetohydrodynamic turbulence. These results support the hypothesis that stochastic heating accounts for much of the perpendicular proton heating occurring in low-{beta} fast-wind streams.

Bourouaine, Sofiane; Chandran, Benjamin D. G., E-mail: s.bourouaine@unh.edu [Space Science Center and Department of Physics, University of New Hampshire, Durham, NH 03824 (United States)

2013-09-10T23:59:59.000Z

306

A KINETIC MODEL OF SOLAR WIND GENERATION BY OBLIQUE ION-CYCLOTRON WAVES  

SciTech Connect (OSTI)

The fast solar wind is generated by extended perpendicular ion heating in coronal holes, but the kinetic mechanism responsible for this heating has not been determined. One long-standing possibility is the resonant-cyclotron dissipation of ion-cyclotron waves, replenished from a turbulent cascade of interacting counter-propagating Alfven waves. We present results of a kinetic model for proton heating by the quasilinear resonant-cyclotron wave-particle interaction in a coronal hole. The resonant wave spectrum is taken as a power law in wavenumber, uniformly distributed in propagation direction between 0 deg. and 60 deg. with respect to the large-scale radial magnetic field. We obtain the steady-state solution of the kinetic guiding-center equation for the proton distribution in an expanding coronal hole, including the effects of large-scale forces of gravity, charge-separation electric field, Alfven wave ponderomotive force, and mirror force, along with the small-scale scattering from the wave dissipation. We find that plausible wave intensities can yield reasonable flow speeds and temperatures in the heliocentric radial range between 2 and 6 solar radii. We address the claim in earlier work that dissipation of parallel-propagating ion-cyclotron waves cannot provide enough acceleration and show that claim to be incorrect. We find that the combined action of the large-scale forces and the resonant-cyclotron scattering produces proton distribution functions with a characteristic structure: compressed in the sunward half of velocity space with a high-density shell separate from the origin, and relatively expanded in the anti-sunward half of velocity space. We suggest that qualitatively similar proton distributions would result from the kinetic evolution of any sufficiently effective perpendicular heating mechanism operating in an expanding coronal hole.

Isenberg, Philip A.; Vasquez, Bernard J. [Institute for the Study of Earth, Oceans and Space and Department of Physics, University of New Hampshire, Durham, NH 03824 (United States)

2011-04-20T23:59:59.000Z

307

Analysis of the Impact of Balancing Area Cooperation on the Operation of the Western Interconnection with Wind and Solar Generation (Presentation)  

SciTech Connect (OSTI)

This presentation describes the analysis of the impact of balancing area cooperation on the operation of the Western Interconnection with wind and solar generation, including a discussion of operating reserves, ramping, production simulation, and conclusions.

Milligan, M.; Lew, D.; Jordan, G.; Piwko, R.; Kirby, B.; King, J.; Beuning, S.

2011-05-01T23:59:59.000Z

308

Solar cyclical trend study of the mid-latitude, quiet-time, meridional, neutral winds at winter solstice conditions. Master's thesis  

SciTech Connect (OSTI)

Located within the region of the thermosphere is the major portion of the ionosphere. Distribution of the ionospheric plasma within this region is a function of atmospheric mass and energy transport. For the current study, the component of the neutral wind along the magnetic meridian is derived from ground-based ionosonde measurements of the F2 peak layer height. Meridional wind variations with respect to location, universal time, and level of solar activity are the focal points on this investigation. The primary timescale of interest covers a period of one solar cycle, from 1977 to 1987. Data from one station have been extended to 1965 to study the repetitive nature of solar activity on the meridional winds. Results of this study indicate a definite variation of wind speed and direction, which correlates with changing levels of solar activity. It is hoped that the results of this study will aid current efforts to develop ionospheric models and enhance their forecasting capabilities.

Breninger, R.L.

1989-01-01T23:59:59.000Z

309

AN ANALYSIS OF THE ENERGY IMPACTS OF THE DOE APPROPRIATE ENERGY TECHNOLOGY SMALL GRANTS PROGRAM: METHODS AND RESULTS  

E-Print Network [OSTI]

Direct Energy Savings Technolo Solar Conservation BiomassSolar Conservation Biomass Hydro Geothermal Wind EnergySolar Conservation Biomass Hydro Geothermal Wind Energy

Lucarelli, Bart

2013-01-01T23:59:59.000Z

310

Aspects of the theory of incompressible MHD turbulence with cross-helicity and applications to the solar wind  

SciTech Connect (OSTI)

Solar wind observations have shown that the normalized cross-helicity {sigma}{sub c}, the ratio of the cross-helicity spectrum to the energy spectrum, is approximately constant, independent of wavenumber, throughout the inertial range. This means that the correlation between velocity and magnetic field fluctuations is the same at every scale, that the ratio of the two Elsasser energies (w{sup +}/w{sup -}){sup 2} is the same at every scale, and that the ratio of the energy cascade times of the two Elsasser energies {tau}{sup +}/{tau}{sup -} is the same at every scale. In the case when the magnetic Prandtl number is unity, it can be shown from the equations of incompressible MHD that if {sigma}{sub c} is a constant, then the cascade times of the two Elsasser energies are equal so that {tau}{sup +}/{tau}{sup -} = 1. This is an important constraint for turbulence theories. Using this result, the Goldreich and Sridhar theory and the Boldyrev theory are generalized to MHD turbulence with nonvanishing cross-helicity in such a way that the scaling laws of the original two theories are unchanged. The derivation and some of the important properties of these more general theories shall be presented. Solar wind measurements in support of these theoretical models will also be discussed. For example, new solar wind measurements of the total energy spectrum (kinetic plus magnetic) show that the power-law exponent is closer to 3/2 than 5/3, consistent with simulations of 3D incompressible MHD turbulence with a strong mean meagnetic field that show a 3/2 scaling. For highly Alfvenic, high cross-helicity solar wind turbulence, new measurements presented her show that the average spectral index is 1.540 {+-} 0.033.

Podesta, John J [Los Alamos National Laboratory

2010-12-03T23:59:59.000Z

311

Stochastic Methods for Planning and Operating Power Systems with Large Amounts of Wind and Solar Power: Preprint  

SciTech Connect (OSTI)

Wind and solar generators differ in their generation characteristics than conventional generators. The variable output and imperfect predictability of these generators face a stochastic approach to plan and operate the power system without fundamentally changing the operation and planning problems. This paper overviews stochastic modeling challenges in operations, generation planning, and transmission planning, with references to current industry and academic work. Different stochastic problem formulations, including approximations, are also discussed.

Milligan, M.; Donohoo, P.; O'Malley, M.

2012-09-01T23:59:59.000Z

312

PREDICTION OF THE PROTON-TO-TOTAL TURBULENT HEATING IN THE SOLAR WIND  

SciTech Connect (OSTI)

This paper employs a recent turbulent heating prescription to predict the ratio of proton-to-total heating due to the kinetic dissipation of Alfvenic turbulence as a function of heliocentric distance. Comparing to a recent empirical estimate for this turbulent heating ratio in the high-speed solar wind, the prediction shows good agreement with the empirical estimate for R {approx}> 0.8 AU, but predicts less ion heating than the empirical estimate at smaller heliocentric radii. At these smaller radii, the turbulent heating prescription, calculated in the gyrokinetic limit, fails because the turbulent cascade is predicted to reach the proton cyclotron frequency before Landau damping terminates the cascade. These findings suggest that the turbulent cascade can reach the proton cyclotron frequency at R {approx}< 0.8 AU, leading to a higher level of proton heating than predicted by the turbulent heating prescription in the gyrokinetic limit. At larger heliocentric radii, R {approx}> 0.8 AU, this turbulent heating prescription contains all of the necessary physical mechanisms needed to reproduce the empirically estimated proton-to-total heating ratio.

Howes, G. G. [Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242 (United States)

2011-09-01T23:59:59.000Z

313

Dynamics of large-scale solar-wind streams obtained by the double superposed epoch analysis  

E-Print Network [OSTI]

Using the OMNI data for period 1976-2000 we investigate the temporal profiles of 20 plasma and field parameters in the disturbed large-scale types of solar wind (SW): CIR, ICME (both MC and Ejecta) and Sheath as well as the interplanetary shock (IS). To take into account the different durations of SW types, we use the double superposed epoch analysis (DSEA) method: re-scaling the duration of the interval for all types in such a manner that, respectively, beginning and end for all intervals of selected type coincide. As the analyzed SW types can interact with each other and change parameters as a result of such interaction, we investigate separately 8 sequences of SW types: (1) CIR, (2) IS/CIR, (3) Ejecta, (4) Sheath/Ejecta, (5) IS/Sheath/Ejecta, (6) MC, (7) Sheath/MC, and (8) IS/Sheath/MC. The main conclusion is that the behavior of parameters in Sheath and in CIR are very similar both qualitatively and quantitatively. Both the high-speed stream (HSS) and the fast ICME play a role of pistons which push the pl...

Yermolaev, Yu I; Nikolaeva, N S; Yermolaev, M Yu

2015-01-01T23:59:59.000Z

314

Micro Hydro-Diesel Hybrid Power System  

E-Print Network [OSTI]

This paper presents the design and analysis of Neuro-Fuzzy controller based on Adaptive Neuro-Fuzzy Inference System (ANFIS) architecture for Load frequency control of an isolated wind-micro hydro-diesel hybrid power system, to regulate the frequency deviation and power deviations. Due to the sudden load changes and intermittent wind power, large frequency fluctuation problem can occur. This newly developed control strategy combines the advantage of neural networks and fuzzy inference system and has simple structure that is easy to implement. So, in order to keep system performance near its optimum, it is desirable to track the operating conditions and use updated parameters to control the system. Simulations of the proposed ANFIS based Neuro-Fuzzy controller in an isolated wind-micro hydro-diesel hybrid power system with different load disturbances are performed. Also, a conventional proportional Integral (PI) controller and a fuzzy logic (FL) controller were designed separately to control the same hybrid power system for the performance comparison. The performance of the proposed controller is verified from simulations and comparisons. Simulation results show that the performance of the proposed ANFIS based Neuro-Fuzzy Controller damps out the frequency deviation and attains the steady state value with less settling time. The proposed ANFIS based Neuro-Fuzzy controller provides best control performance over a wide range of operating conditions.

Dhanalakshmi R; Palaniswami S

315

Comment on"Air Emissions Due to Wind and Solar Power" and Supporting Information  

SciTech Connect (OSTI)

Katzenstein and Apt investigate the important question of pollution emission reduction benefits from variable generation resources such as wind and solar. Their methodology, which couples an individual variable generator to a dedicated gas plant to produce a flat block of power is, however, inappropriate. For CO{sub 2}, the authors conclude that variable generators 'achieve {approx} 80% of the emission reductions expected if the power fluctuations caused no additional emissions.' They find even lower NO{sub x} emission reduction benefits with steam-injected gas turbines and a 2-4 times net increase in NO{sub x} emissions for systems with dry NO{sub x} control unless the ratio of energy from natural gas to variable plants is greater than 2:1. A more appropriate methodology, however, would find a significantly lower degradation of the emissions benefit than suggested by Katzenstein and Apt. As has been known for many years, models of large power system operations must take into account variable demand and the unit commitment and economic dispatch functions that are practiced every day by system operators. It is also well-known that every change in wind or solar power output does not need to be countered by an equal and opposite change in a dispatchable resource. The authors recognize that several of their assumptions to the contrary are incorrect and that their estimates therefore provide at best an upper bound to the emissions degradation caused by fluctuating output. Yet they still present the strong conclusion: 'Carbon dioxide emissions reductions are likely to be 75-80% of those presently assumed by policy makers. We have shown that the conventional method used to calculate emissions is inaccurate, particularly for NO{sub x} emissions.' The inherently problematic methodology used by the authors makes such strong conclusions suspect. Specifically, assuming that each variable plant requires a dedicated natural gas backup plant to create a flat block of power ignores the benefits of diversity. In real power systems, operators are required to balance only the net variations of all loads and all generators, not the output of individual loads or generators; doing otherwise would ensure an enormous amount of unnecessary investment and operating costs. As a result, detailed studies that aggregate the variability of all loads and generators to the system level find that the amount of operating reserves required to reliably integrate variable resources into the grid are on the order of 10% of the nameplate capacity of the variable generators, even when upto25%of gross demand is being met by variable generation. The authors implicit assumption that incremental operating reserves must be 100% of the nameplate capacity of the variable generation, and be available at all times to directly counter that variability, excludes the option of decommitting conventional units when the load net of variable generation is low. In real power systems, generation response to wind variation can typically be met by a combination of committed units, each operating at a relatively efficient point of their fuel curves. In the Supporting Information, we conceptually demonstrate that the CO{sub 2} and NO{sub x} efficiency penalty found by the authors can be significantly reduced by considering the unit commitment decision with just five plants. Real systems often have tens to hundreds of plants that can be committed and decommitted over various time frames. Ignoring the flexibility of the unit commitment decision therefore leads to unsupportable results. Anumber of analyses of the fuel savings and CO{sub 2} emission benefits of variable generation have considered realistic operating reserve requirements and unit commitment decisions in models that include the reduction in part load efficiency of conventional plants. The efficiency penalty due to the variability of wind in four studies considered by Gross et al. is negligible to 7%, for up to a 20% wind penetration level. In short, for moderate wind penetration levels, 'there is no evidence available to

Mills, Andrew D.; Wiser, Ryan H.; Milligan, Michael; O'Malley, Mark

2009-03-18T23:59:59.000Z

316

Hydro | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation,Ohio:GreerHiCalifornia: Energy ResourcesPark,isHydro or hydroelectric

317

Hydro Green Energy | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:PhotonHolyName HousingIII WindHybrids Plus Jump to:EnergyHydro

318

HydroVolts | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat Jump to:PhotonHolyName HousingIII WindHybrids PlusHydroVolts Jump to:

319

Interaction of the plasma tail of comet Bradfield 1979L on 1980 February 6 with a possibly flare-generated solar-wind disturbance  

SciTech Connect (OSTI)

Solar-wind plasma data from the ISEE-3 and Helios 2 spacecraft have been examined in order to explain a uniquely rapid 10/sup 0/ turning of the plasma tail of comet Bradfield 1979L on 1980 February 6. An earlier study conducted before the availability of in situ solar-wind data (Brandt et al., 1980) suggested that the tail position angle change occurred in response to a solar-wind velocity shear across which the polar component changed by approx. 50 km s/sup -1/. The present contribution confirms this result and further suggests that the comet-tail activity was caused by non-corotating, disturbed plasma flows probably associated with an Importance 1B solar flare.

Niedner, M.B. Jr.; Brandt, J.C.; Zwickl, R.D.; Bame, S.J.

1982-01-01T23:59:59.000Z

320

Alfven waves in the solar wind in association with solar energetic particles: sunspot umbral origin. Final report 1 Oct 80-31 Mar 83  

SciTech Connect (OSTI)

We report on a search for Alfven waves in the solar wind during solar particle events. During the period June 6-8, 1979, we find clear signatures of outgoing Alfven waves which could have been released from the sun simultaneously with the initial release of energetic particles. The waves are soliton-like, with durations of 200-900 seconds. An isolated square Alfven solution is also seen when the first particles (with E approximately 57 MeV) are detected: the width of this solution is approximately 950 seconds. A series of five small amplitude spikes in the magnetic field are also seen, preceding the arrival of the first particles by a few hours. The spikes are separated by intervals of 854 + or - 20 seconds. We suggest that these periodicities are determined by conditions at the sun. The features which we have detected are consistent with Alfven waves released from the umbra of a sunspot during a flare.

Mullan, D.J.; Owens, A.J.

1983-02-04T23:59:59.000Z

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


321

Solar powered desalination system  

E-Print Network [OSTI]

As a clean energy source, solar power is inexhaustible,renewables for energy sources, including solar power. Also,Requirements Energy Source Natural Gas Nuclear Solar Wind

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

322

Power law burst and inter-burst interval distributions in the solar wind: turbulence or dissipative SOC ?  

E-Print Network [OSTI]

We calculate for the first time the probability density functions (PDFs) P of burst energy e, duration T and inter-burst interval tau for a known turbulent system in nature. Bursts in the earth-sun component of the Poynting flux at 1 AU in the solar wind were measured using the MFI and SWE experiments on the NASA WIND spacecraft. We find P(e) and P(T) to be power laws, consistent with self-organised criticality (SOC). We find also a power law form for P(tau) that distinguishes this turbulent cascade from the exponential P(tau) of ideal SOC, but not from some other SOC-like sandpile models. We discuss the implications for the relation between SOC and turbulence.

M. P. Freeman; N. W. Watkins; D. J. Riley

2000-03-08T23:59:59.000Z

323

A nuclear wind/solar oil-shale system for variable electricity and liquid fuels production  

SciTech Connect (OSTI)

The recoverable reserves of oil shale in the United States exceed the total quantity of oil produced to date worldwide. Oil shale contains no oil, rather it contains kerogen which when heated decomposes into oil, gases, and a carbon char. The energy required to heat the kerogen-containing rock to produce the oil is about a quarter of the energy value of the recovered products. If fossil fuels are burned to supply this energy, the greenhouse gas releases are large relative to producing gasoline and diesel from crude oil. The oil shale can be heated underground with steam from nuclear reactors leaving the carbon char underground - a form of carbon sequestration. Because the thermal conductivity of the oil shale is low, the heating process takes months to years. This process characteristic in a system where the reactor dominates the capital costs creates the option to operate the nuclear reactor at base load while providing variable electricity to meet peak electricity demand and heat for the shale oil at times of low electricity demand. This, in turn, may enable the large scale use of renewables such as wind and solar for electricity production because the base-load nuclear plants can provide lower-cost variable backup electricity. Nuclear shale oil may reduce the greenhouse gas releases from using gasoline and diesel in half relative to gasoline and diesel produced from conventional oil. The variable electricity replaces electricity that would have been produced by fossil plants. The carbon credits from replacing fossil fuels for variable electricity production, if assigned to shale oil production, results in a carbon footprint from burning gasoline or diesel from shale oil that may half that of conventional crude oil. The U.S. imports about 10 million barrels of oil per day at a cost of a billion dollars per day. It would require about 200 GW of high-temperature nuclear heat to recover this quantity of shale oil - about two-thirds the thermal output of existing nuclear reactors in the United States. With the added variable electricity production to enable renewables, additional nuclear capacity would be required. (authors)

Forsberg, C. [Massachusetts Inst. of Technology, 77 Massachusetts Ave., Cambridge, MA 012139 (United States)

2012-07-01T23:59:59.000Z

324

Green Industrial Policy: Trade and Theory  

E-Print Network [OSTI]

communities using solar PV, small hydro, and wind. A compet-years to bring solar, small-scale hydro and wind electricity

Karp, Larry; Stevenson, Megan

2012-01-01T23:59:59.000Z

325

VISCOUS-LIKE INTERACTION OF THE SOLAR WIND WITH THE PLASMA TAIL OF COMET SWIFT-TUTTLE  

SciTech Connect (OSTI)

We compare the results of the numerical simulation of the viscous-like interaction of the solar wind with the plasma tail of a comet, with velocities of H{sub 2}O+ ions in the tail of comet Swift-Tuttle determined by means of spectroscopic ground-based observations. Our aim is to constrain the value of the basic parameters in the viscous-like interaction model: the effective Reynolds number of the flow and the interspecies coupling timescale. We find that in our simulations the flow rapidly evolves from an arbitrary initial condition to a quasi-steady state for which there is a good agreement between the simulated tailward velocity of H{sub 2}O+ ions and the kinematics derived from the observations. The fiducial case of our model, characterized by a low effective Reynolds number (Re{sub eff} {approx} 20) selected on the basis of a comparison to in situ measurements of the plasma flow at comet Halley, yields an excellent fit to the observed kinematics. Given the agreement between model and observations, with no ad hoc assumptions, we believe that this result suggests that viscous-like momentum transport may play an important role in the interaction of the solar wind and the cometary plasma environment.

Reyes-Ruiz, Mauricio; Vazquez, Roberto [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apdo. Postal 877, Ensenada, B.C. 22800 (Mexico); Perez-de-Tejada, Hector, E-mail: maurey@astrosen.unam.m [Instituto de Geofisica, Universidad Nacional Autonoma de Mexico, Ciudad Univeritaria, Mexico D.F. (Mexico)

2010-07-01T23:59:59.000Z

326

Hydrologic Modeling with Arc Hydro Tools 1 Copyright 2007 ESRI. All rights reserved. Arc Hydro  

E-Print Network [OSTI]

Hydrologic Modeling with Arc Hydro Tools 1 Copyright © 2007 ESRI. All rights reserved. Arc Hydro Arc Hydro: GIS in Water Resources Seminar/Workshop Gainesville, Florida ­ November 15, 2007 Christine Dartiguenave, ESRI inc. cdartiguenave@esri.com #12;Hydrologic Modeling with Arc Hydro Tools 2 2Arc Hydro

Kane, Andrew S.

327

A COMPARISON OF THE AQUATIC IMPACTS OF LARGE HYDRO AND SMALL HYDRO PROJECTS  

E-Print Network [OSTI]

A COMPARISON OF THE AQUATIC IMPACTS OF LARGE HYDRO AND SMALL HYDRO PROJECTS by Lara A. Taylor, P Project: A Comparison of the Aquatic Impacts of Large Hydro and Small Hydro Projects Project No.: 501 of small hydro development in British Columbia has raised concerns surrounding the effects

328

Summary of Time Period-Based and Other Approximation Methods for Determining the Capacity Value of Wind and Solar in the United States: September 2010 - February 2012  

SciTech Connect (OSTI)

This paper updates previous work that describes time period-based and other approximation methods for estimating the capacity value of wind power and extends it to include solar power. The paper summarizes various methods presented in utility integrated resource plans, regional transmission organization methodologies, regional stakeholder initiatives, regulatory proceedings, and academic and industry studies. Time period-based approximation methods typically measure the contribution of a wind or solar plant at the time of system peak - sometimes over a period of months or the average of multiple years.

Rogers, J.; Porter, K.

2012-03-01T23:59:59.000Z

329

Analyzing and simulating the variability of solar irradiance and solar PV powerplants  

E-Print Network [OSTI]

in spatially dispersed wind turbine systems, Solar energy. ,Smoothing effects of distributed wind turbines. Part 2.power output of distant wind turbines, Wind Energy, 7 (2004)

Lave, Matthew S.

2012-01-01T23:59:59.000Z

330

Ontario Hydro Motor Efficiency Study  

E-Print Network [OSTI]

Electric motors consume more than one-half of the electrical energy produced by Ontario Hydro. In the residential sector, the major motor load is for refrigerators and freezers while packaged equipment dominate the motor load in the commercial...

Dautovich, D. R.

1980-01-01T23:59:59.000Z

331

Midwest Hydro Users Group Meeting  

Broader source: Energy.gov [DOE]

The Midwest Hydro Users Group will be holding their annual Fall meeting on November 12th and 13th in Wausau, Wisconsin.  An Owners-only meeting on the afternoon of the 12th followed by a full...

332

Spectral Slope Variation at Proton Scales from Fast to Slow Solar Wind  

E-Print Network [OSTI]

We investigated the behavior of the spectral slope of interplanetary magnetic field fluctuations at proton scales for selected high resolution time intervals from WIND and MESSENGER spacecraft at $1$ AU and $0.56$ AU, respectively. The analysis was performed within the profile of high speed streams, moving from fast to slow wind regions. The spectral slope showed a large variability between $-3.75$ and $-1.75$ and a robust tendency for this parameter to be steeper within the trailing edge where the speed is higher and to be flatter within the subsequent slower wind, following a gradual transition between these two states. The value of the spectral index seems to depend firmly on the power associated to the fluctuations within the inertial range, higher the power steeper the slope. Our result support previous analyses suggesting that there must be some response of the dissipation mechanism to the level of the energy transfer rate along the inertial range.

Bruno, R; Telloni, D

2014-01-01T23:59:59.000Z

333

Solar wind and geomagnetism: toward a standard classification of geomagnetic activity from 1868 to 2009  

E-Print Network [OSTI]

We examined solar activity with a large series of geomagnetic data from 1868 to 2009. We have revisited the geomagnetic activity classification scheme of Legrand and Simon (1989) and improve their scheme by lowering the ...

Zerbo, J. L.

334

Extreme hydro-meteorological events and their probabilities  

E-Print Network [OSTI]

Extreme hydro-meteorological events and their probabilities Jules Beersma #12;Promotor: Prof. dr. A Onderzoekschool (BBOS) #12;Extreme hydro-meteorological events and their probabilities Extreme hydro

Beersma, Jules

335

Effect of wind speed on the growth of the upper convective zone in a solar pond  

E-Print Network [OSTI]

LIST OF FIGURES CHAPTER Page 111 Vi I INTRODUCTION LITERATURE REVIEW III EXPERIMENTAL APPARATUS IV RESULTS 14 21 V ENTRAINMENT AS A FUNCTION OF RICHARDSON NUMBER 32 VI CONCLUSIONS AND RECOMMENDATIONS 44 REFERENCES APPENDIX 1 APPENDIX 2... speed. 11. Thickness of UCZ for 9. 6 m/s wind speed. 12. Thickness of UCZ for 15. 0 m/s wind speed. 52 53 54 55 56 57 58 13. Horizontal and vertical coordinates of 25 locations for measuring cross section air velocities. . . . . . 59 14. Air...

McMinn, Steven Lee

2012-06-07T23:59:59.000Z

336

Power Flow Controller for Renewables: Transformer-less Unified Power Flow Controller for Wind and Solar Power Transmission  

SciTech Connect (OSTI)

GENI Project: MSU is developing a power flow controller to improve the routing of electricity from renewable sources through existing power lines. The fast, innovative, and lightweight circuitry that MSU is incorporating into its controller will eliminate the need for a separate heavy and expensive transformer, as well as the construction of new transmission lines. MSU’s controller is better suited to control power flows from distributed and intermittent wind and solar power systems than traditional transformer-based controllers are, so it will help to integrate more renewable energy into the grid. MSU‘s power flow controller can be installed anywhere in the existing grid to optimize energy transmission and help reduce transmission congestion.

None

2012-02-08T23:59:59.000Z

337

REINTERPRETATION OF SLOWDOWN OF SOLAR WIND MEAN VELOCITY IN NONLINEAR STRUCTURES OBSERVED UPSTREAM OF EARTH'S BOW SHOCK  

SciTech Connect (OSTI)

Two of the many features associated with nonlinear upstream structures are (1) the solar wind (SW) mean flow slows down and deviates substantially and (2) the temperature of the plasma increases in the structure. In this Letter, we show that the SW beam can be present throughout the entire upstream event maintaining a nearly constant beam velocity and temperature. The decrease of the velocity is due to the appearance of new particles moving in the opposite direction that act against the SW beam and reduce the mean velocity as computed via moments. The new population, which occupies a larger velocity space, also contributes to the second moment, increasing the temperature. The new particles include the reflected SW beam at the bow shock and another population of lower energies, accelerated nearby at the shock or at the boundary of the nonlinear structures.

Parks, G. K.; Lin, N. [Space Sciences Laboratory, University of California, Berkeley, CA (United States); Lee, E.; Hong, J. [School of Space Research, Kyung Hee University, Yongin, Gyeonggi (Korea, Republic of); Fu, S. Y. [School of Earth and Space Sciences, Peking University, Beijing (China); McCarthy, M. [Earth and Space Sciences, University of Washington, Seattle, WA (United States); Cao, J. B. [Beijing University of Aeronautics and Astronautics, 100190, Beijing (China); Liu, Y.; Shi, J. K. [Space Weather, National Space Science Center, Beijing (China); Goldstein, M. L. [NASA, Goddard Space Flight Center, Greenbelt, MD (United States); Canu, P. [Laboratory for Plasma Physics, Ecole Polytechnique, Paris (France); Dandouras, I. [CNRS, IRAP, 9 Ave. Colonel Roche, Toulouse (France); Reme, H., E-mail: parks@ssl.berkeley.edu [CNRS, IRAP, University of Toulouse, UPS-OMP, Toulouse (France)

2013-07-10T23:59:59.000Z

338

Print http://us.mg4.mail.yahoo.com/neo/launch?.rand=deOsgk04ks40i Subject: RE: [s-w-h] b Solar verses wind efficiency  

E-Print Network [OSTI]

.yahoo.com/neo/launch?.rand=deOsgk04ks40i Subject: RE: [s-w-h] b Solar verses wind efficiency From: Michael Klemen (wind4energy;Print http://us.rng4.mail.yahoo.comlneo/launch?.rand=deOsgko4ks4 energy in the wind is proportional://www.ndsu.edu/ndsu/klemen/Perfect_Turbine.htm You can see that for an ideal real life wind turbine ("good turbine") the increase in energy

339

Solar Impulsive Energetic Electron Events  

E-Print Network [OSTI]

coronal mass ejections and solar energetic proton events, J.Voyager observations of solar wind proton temperature:1- 10Howard (2004), Variability of solar eruptions during cycle

Wang, Linghua

2009-01-01T23:59:59.000Z

340

Ion kinetic energy conservation and magnetic field strength constancy in multi-fluid solar wind Alfv\\'enic turbulence  

E-Print Network [OSTI]

We investigate properties of the plasma fluid motion in the large amplitude low frequency fluctuations of highly Alfv\\'enic fast solar wind. We show that protons locally conserve total kinetic energy when observed from an effective frame of reference comoving with the fluctuations. For typical properties of the fast wind, this frame can be reasonably identified by alpha particles, which, owing to their drift with respect to protons at about the Alfv\\'en speed along the magnetic field, do not partake in the fluid low frequency fluctuations. Using their velocity to transform proton velocity into the frame of Alfv\\'enic turbulence, we demonstrate that the resulting plasma motion is characterized by a constant absolute value of the velocity, zero electric fields, and aligned velocity and magnetic field vectors as expected for unidirectional Alfv\\'enic fluctuations in equilibrium. We propose that this constraint, via the correlation between velocity and magnetic field in Alfv\\'enic turbulence, is at the origin of ...

Matteini, L; Pantellini, F; Velli, M; Schwartz, S J

2015-01-01T23:59:59.000Z

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


341

Wind and Solar Energy Curtailment: Experience and Practices in the United States  

SciTech Connect (OSTI)

This report examines U.S. curtailment practices, with a particular emphasis on utilities in the Western states. The information presented here is based on a series of interviews conducted with utilities, system operators, wind energy developers, and non-governmental organizations. The report provides case studies of curtailment experience and examines the reasons for curtailment, curtailment procedures, compensation, and practices that can minimize curtailment.

Bird, L.; Cochran, J.; Wang, X.

2014-03-01T23:59:59.000Z

342

Assessment of Wind/Solar Co-Located Generation in Texas  

Broader source: Energy.gov [DOE]

As part of the Solar America Cities program, Austin Energy proposed to perform an assessment of the rooftop area available for PV development within its service area. Austin Energy contracted with Clean Energy Associates (CEA) to perform the analysis. This report summarizes the project objectives, data sources and methodological approach employed, and results.

343

Massive stars and the energy balance of the interstellar medium. II. The 35 solar mass star and a solution to the "missing wind problem"  

E-Print Network [OSTI]

We continue our numerical analysis of the morphological and energetic influence of massive stars on their ambient interstellar medium for a 35 solar mass star that evolves from the main sequence through red supergiant and Wolf-Rayet phases, until it ultimately explodes as a supernova. We find that structure formation in the circumstellar gas during the early main-sequence evolution occurs as in the 60 solar mass case but is much less pronounced because of the lower mechanical wind luminosity of the star. Since on the other hand the shell-like structure of the HII region is largely preserved, effects that rely on this symmetry become more important. At the end of the stellar lifetime 1% of the energy released as Lyman continuum radiation and stellar wind has been transferred to the circumstellar gas. From this fraction 10% is kinetic energy of bulk motion, 36% is thermal energy, and the remaining 54% is ionization energy of hydrogen. The sweeping up of the slow red supergiant wind by the fast Wolf-Rayet wind produces remarkable morphological structures and emission signatures, which are compared with existing observations of the Wolf-Rayet bubble S308. Our model reproduces the correct order of magnitude of observed X-ray luminosity, the temperature of the emitting plasma as well as the limb brightening of the intensity profile. This is remarkable, because current analytical and numerical models of Wolf-Rayet bubbles fail to consistently explain these features. A key result is that almost the entire X-ray emission in this stage comes from the shell of red supergiant wind swept up by the shocked Wolf-Rayet wind rather than from the shocked Wolf-Rayet wind itself as hitherto assumed and modeled. This offers a possible solution to what is called the ``missing wind problem'' of Wolf-Rayet bubbles.

Tim Freyer; Gerhard Hensler; Harold W. Yorke

2005-12-05T23:59:59.000Z

344

Advanced Numerical Weather Prediction Techniques for Solar Irradiance Forecasting : : Statistical, Data-Assimilation, and Ensemble Forecasting  

E-Print Network [OSTI]

Piwko, 2010: Western wind and solar integration study. NRELsources such as wind and solar power. Integration of this

Mathiesen, Patrick James

2013-01-01T23:59:59.000Z

345

Hydro-Québec Net Metering (Quebec, Canada)  

Broader source: Energy.gov [DOE]

In line with Hydro-Québec's commitment to the environment and sustainable development, Hydro-Québec is supporting self-generation with a new rate offering: the net metering option. This option...

346

North West Hydro Resource Model Research to identify potential capacity and assist NW hydro power development  

E-Print Network [OSTI]

North West Hydro Resource Model Research to identify potential capacity and assist NW hydro power University wide research, aims to develop a system to promote the exploitation of hydro power in North with regard to hydro schemes Reviewing and re-formulating ill defined requirements for environmental

Meju, Max

347

Prparation de votre examen stabilit hydro  

E-Print Network [OSTI]

Préparation de votre examen stabilité hydro: - Relisez vos notes de cours - Refaites les exercices

Hoepffner, Jérôme

348

Forecasting Uncertainty Related to Ramps of Wind Power Production  

E-Print Network [OSTI]

- namic reserve quantification [8], for the optimal oper- ation of combined wind-hydro power plants [5, 1Forecasting Uncertainty Related to Ramps of Wind Power Production Arthur Bossavy, Robin Girard - The continuous improvement of the accuracy of wind power forecasts is motivated by the increasing wind power

Boyer, Edmond

349

Runner upgrading: Learning from Ontario Hydro`s experience  

SciTech Connect (OSTI)

Planning, design, and implementation of turbine runner replacement at Ontario Hydro is described in the article. The use of fully homologous modeling for upgrade projects, including both francis and propeller runner types, is outlined. Confirmation of physical model efficiency is obtained through numerical modeling. Inlet connections, setting cavitation-erosion guarantees, and other guarantees included in tender documents are also described in some detail.

Kee, D.C.; Markovich, M.S.; Munro, R.I. [Ontario Hydro (Canada)

1997-02-01T23:59:59.000Z

350

Wind and solar power electric generation to see strong growth over the next two years  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"Click worksheet9,1,50022,3,,,,6,1,,781Title: Telephone:short version) Themonthly4BlenderWeeklyNetWind

351

A Steady-State Picture of Solar Wind Acceleration and Charge State Composition Derived from a Global Wave-Driven MHD Model  

E-Print Network [OSTI]

The higher charge states found in slow ($<$400km s$^{-1}$) solar wind streams compared to fast streams have supported the hypothesis that the slow wind originates in closed coronal loops, and released intermittently through reconnection. Here we examine whether a highly ionized slow wind can also form along steady and open magnetic field lines. We model the steady-state solar atmosphere using AWSoM, a global magnetohydrodynamic model driven by Alfv{\\'e}n waves, and apply an ionization code to calculate the charge state evolution along modeled open field lines. This constitutes the first charge states calculation covering all latitudes in a realistic magnetic field. The ratios $O^{+7}/O^{+6}$ and $C^{+6}/C^{+5}$ are compared to in-situ Ulysses observations, and are found to be higher in the slow wind, as observed; however, they are under-predicted in both wind types. The modeled ion fractions of S, Si, and Fe are used to calculate line-of-sight intensities, which are compared to EIS observations above a cor...

Oran, Rona; van der Holst, Bart; Lepri, Susan T; Frazin, Alberto M Vásquez Federico A Nuevo Richard; Manchester, Ward B; Sokolov, Igor V; Gombosi, Tamas I

2014-01-01T23:59:59.000Z

352

4, 18791891, 2007 hydro-information  

E-Print Network [OSTI]

HESSD 4, 1879­1891, 2007 WS for hydro-information systems J. Horak et al. Title Page Abstract for distributed and interoperable hydro-information systems J. Horak, A. Orlik, and J. Stromsky Institute (antonin.orlik.hgf@vsb.cz) 1879 #12;HESSD 4, 1879­1891, 2007 WS for hydro-information systems J. Horak et

Paris-Sud XI, Université de

353

The Political Economy of Wind Power in China  

E-Print Network [OSTI]

solar panels are too expensive to install domestically, China‘China,? as Chinese wind resources are abundant and wind power is cheaper than solar

Swanson, Ryan Landon

2011-01-01T23:59:59.000Z

354

OBSERVATIONAL QUANTIFICATION OF THE ENERGY DISSIPATED BY ALFVÉN WAVES IN A POLAR CORONAL HOLE: EVIDENCE THAT WAVES DRIVE THE FAST SOLAR WIND  

SciTech Connect (OSTI)

We present a measurement of the energy carried and dissipated by Alfvén waves in a polar coronal hole. Alfvén waves have been proposed as the energy source that heats the corona and drives the solar wind. Previous work has shown that line widths decrease with height in coronal holes, which is a signature of wave damping, but have been unable to quantify the energy lost by the waves. This is because line widths depend on both the non-thermal velocity v{sub nt} and the ion temperature T{sub i}. We have implemented a means to separate the T{sub i} and v{sub nt} contributions using the observation that at low heights the waves are undamped and the ion temperatures do not change with height. This enables us to determine the amount of energy carried by the waves at low heights, which is proportional to v{sub nt}. We find the initial energy flux density present was 6.7 ± 0.7 × 10{sup 5} erg cm{sup –2} s{sup –1}, which is sufficient to heat the coronal hole and accelerate the solar wind during the 2007-2009 solar minimum. Additionally, we find that about 85% of this energy is dissipated below 1.5 R{sub ?}, sufficiently low that thermal conduction can transport the energy throughout the coronal hole, heating it and driving the fast solar wind. The remaining energy is roughly consistent with what models show is needed to provide the extended heating above the sonic point for the fast solar wind. We have also studied T{sub i}, which we found to be in the range of 1-2 MK, depending on the ion species.

Hahn, M.; Savin, D. W. [Columbia Astrophysics Laboratory, Columbia University, MC 5247, 550 West 120th Street, New York, NY 10027 (United States)

2013-10-20T23:59:59.000Z

355

Solar Wind Sources in the Late Declining Phase of Cycle 23: Effects of the Weak Solar Polar Field on High Speed Streams  

E-Print Network [OSTI]

P. , Arge, C.N. : 2008, Solar Phys. Lee, C.O. , Luhmann,De Pater, I. , et al. : 2009, Solar Phys. in press. Li, Y. ,G.W. , Kopp, R.A. : 1971, Solar Phys. 18, 258. Schatten,

2009-01-01T23:59:59.000Z

356

SciTech Connect: "solar plasma wind"  

Office of Scientific and Technical Information (OSTI)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation In closing,--SpeedingSpeedingSpeeding"Sambeek, L.L. Van"solar

357

Alternative Energy Development and China's Energy Future  

E-Print Network [OSTI]

sources of non- fossil electricity generation including wind, solar, hydro, nuclear and geothermal, renewable energy

Zheng, Nina

2012-01-01T23:59:59.000Z

358

U.S. Biomass Energy: An Assessment of Costs & Infrastructure for Alternative Uses  

E-Print Network [OSTI]

technologies such as clean coal, natural gas, nuclear, hydro, wind, and solar photovoltaic technologies

359

Dynamic load Variation and Stability Analysis in Distribution Networks with Distributed Generators  

E-Print Network [OSTI]

energy sources (small hydro, modern biomass, wind, solar, geothermal, and bio fuels). The annual growth

Pota, Himanshu Roy

360

Identification of Critical Parameters for Distribution Networks with DFIG and Dynamic loads  

E-Print Network [OSTI]

sources (small hydro, modern biomass, wind, solar, geothermal, and bio fuels) . The annual growth rate

Pota, Himanshu Roy

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


361

Variation in rectal temperature, respiratory rate, and pulse rate of cattle as related to variations in solar radiation, air temperature, wind velocity, and vapor pressure  

E-Print Network [OSTI]

VARIATION IN RECTAL TEMPERATURE, RESPIRATORY RATE, AND PULSE RATE GF CATTLE AS RELATED TO VARIATIONS IN SOLAR RADIATION, AIR TEMPERATURE, WIND VELOCITY, AND VAPOR PRESSURE A Dissertation By Mohammad Fazlur Rahim Quazi Approved as to style... Dissertation By Mohammad Fazlur Rahim tyiazi Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY May 1955 Major Subject: Genetics ? ?4...

Quazi, Mohammad Fazlur Rahim

1955-01-01T23:59:59.000Z

362

Solar and Wind Energy Resource Assessment (SWERA) Data from the National Renewable Energy Library and the United Nations Environment Program (UNEP)  

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

The SWERA Programme provides easy access to credible renewable energy data to stimulate investment in, and development of, renewable energy technologies. The Solar and Wind Energy Resource Assessment (SWERA) started in 2001 to advance the large-scale use of renewable energy technologies by increasing the availability and accessibility of high-quality solar and wind resource information. SWERA began as a pilot project with funding from the Global Environment Facility (GEF) and managed by the United Nations Environment Programme's (UNEP) Division of Technology, Industry and Economics (DTIE) in collaboration with more than 25 partners around the world. With the success of the project in 13 pilot countries SWERA expanded in 2006 into a full programme. Its expanded mission is to provide high quality information on renewable energy resources for countries and regions around the world, along with the tools needed to apply these data in ways that facilitate renewable energy policies and investments.[from the SWERA Guide at http://swera.unep.net/index.php?id=sweraguide_chp1] DOE and, in particular, the National Renewable Energy Laboratory, has been a functioning partner from the beginning. NREL was part of the original technical team involved in mapping, database, and GIS activities. Solar, wind, and meteorological data for selected countries can be accessed through a variety of different tools and interfaces.

363

Optimization of satellite coverage in observing cause and effect changes in the ionosphere, magnetosphere, and solar wind. Master's thesis  

SciTech Connect (OSTI)

Disturbances in the ionosphere sometimes cause adverse effects to communications systems, power grids, etc. on the earth. Currently, very little, if any, lead time is given to warn of an impending problem. If a forecast could be made of ionospheric occurrences, some lead time may be given to appropriate agencies and equipment may be saved. Most changes that occur in the ionosphere are a result of interaction of energy, currents, etc. between the magnetosphere and/or solar wind. Before a forecast can be made, however, improvement of ionospheric models currently in use need to be made. The models currently depict features in various regions of the ionosphere but not always where these features are actually observed. So an improvement to the model is needed to create an accurate baseline condition, or in other words an accurate depiction of the current ionosphere. Models could be improved by inputting real-time data from the ionosphere into the model. This data would come from satellites and/or ground-based stations.

Loveless, M.J.

1993-06-01T23:59:59.000Z

364

International Microgrid Assessment: Governance, INcentives, and Experience (IMAGINE)  

E-Print Network [OSTI]

energy resources, such as small hydro, wind, biomass, andSolar PV Biomass Wind Small hydro Figure 25: China’s feed-in

Marnay, Chris

2014-01-01T23:59:59.000Z

365

Lessons Learned from Microgrid Demonstrations Worldwide  

E-Print Network [OSTI]

energy resources, such as small hydro, wind, biomass, andSolar PV Biomass Wind Small hydro Figure 6: China’s feed-in

Marnay, Chris

2014-01-01T23:59:59.000Z

366

Catalog of DC Appliances and Power Systems  

E-Print Network [OSTI]

>95% grid-integrated), 3% micro-hydro, and 2% micro-wind. InIn addition to solar, micro-hydro and wind, we also provide

Garbesi, Karina

2012-01-01T23:59:59.000Z

367

Renewable Resource Integration Project - Scoping Study of Strategic Transmission, Operations, and Reliability Issues  

E-Print Network [OSTI]

production level from small hydro as recorded in 2006.  kWH Geothermal Biomass Small Hydro 830 est Wind Solar TotalRPS Geothermal Biomass Small Hydro 830 est Wind Solar Total

Budhraja, Vikram

2008-01-01T23:59:59.000Z

368

Manitoba Hydro | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 - 429Lacey,(MonasterLowellis a town in Carroll County,Manitoba Hydro Jump to:

369

Linkage of the ArcHydro Data Model with SWAT  

E-Print Network [OSTI]

Linkage of the ArcHydro Data Model with SWAT Francisco Olivera, Ph.D., P.E. Milver Valenzuela Texas on a hub basis. Independent of the already connected models HUB #12;Arc Hydro Arc Hydro can be used as the hub for connecting hydrologic models. #12;Arc Hydro #12;What it is and what it is not ... Arc Hydro

370

Subsea Pumped Hydro Storage -A Technology Assessment.  

E-Print Network [OSTI]

??A novel technology for energy storage called Subsea Pumped Hydro Storage (SPHS) has been evaluated from a techno-economical point of view. Intermittent renewable energy sources… (more)

Falk, Johan

2013-01-01T23:59:59.000Z

371

Ris-R-1118(EN) Power Control for Wind Tur-  

E-Print Network [OSTI]

to increase the wind energy penetration. The main options are to combine wind power with a pumped hydro power been developed to assess that. The economic investigations have shown that for small systems where only small amounts of wind energy would otherwise have been dumped add-on PQ- controllers with battery

372

Characterization of the Solar Power Resource in Europe and Assessing Benefits of Co-Location with Wind Power Installations  

E-Print Network [OSTI]

The extent, availability and reliability of solar power generation are assessed over Europe, and—following a previously developed methodology—special attention is given to the intermittency of solar power. Combined with ...

Bozonnat, C.

373

Vortex Hydro Energy Develops Transformational Technology to Harness...  

Energy Savers [EERE]

Vortex Hydro Energy Develops Transformational Technology to Harness Energy from Water Currents Vortex Hydro Energy Develops Transformational Technology to Harness Energy from Water...

374

NOAA Fisheries Protocols For Hydro-dynamic Dredge Surveys  

E-Print Network [OSTI]

NOAA Fisheries Protocols For Hydro-dynamic Dredge Surveys: Surf Clams and Ocean Quahogs December 19..................................................................................................................................... 1 NOAA Fisheries Hydro-dynamic Clam Dredge Survey Protocols

375

Wind/Solar : A Regulatory Guide to Leasing, Permitting, and Licensing in Idaho, Montana, Oregon, and Washington.  

SciTech Connect (OSTI)

This handbook is one of a series that was recently written or updated for persons involved in the development of generating plants that use renewable resources. Other siting handbooks cover facilities powered by geothermal, hydro, and biomass resources. These handbooks are intended to introduce the reader to the regulations and their corresponding institutions that affect the development of physical facilities. The handbooks, for the most part, apply to resource development in the Pacific Northwest, i.e., Oregon, Washington, Idaho, and Western Montana. Some states have their own development or siting handbooks. These may be identified and obtained by contacting the states` energy offices.

Bain, Don; Bloomquist, R. Gordon

1992-12-01T23:59:59.000Z

376

Wind/solar: A regulatory guide to leasing, permitting, and licensing in Idaho, Montana, Oregon, and Washington  

SciTech Connect (OSTI)

This handbook is one of a series that was recently written or updated for persons involved in the development of generating plants that use renewable resources. Other siting handbooks cover facilities powered by geothermal, hydro, and biomass resources. These handbooks are intended to introduce the reader to the regulations and their corresponding institutions that affect the development of physical facilities. The handbooks, for the most part, apply to resource development in the Pacific Northwest, i.e., Oregon, Washington, Idaho, and Western Montana. Some states have their own development or siting handbooks. These may be identified and obtained by contacting the states' energy offices.

Bain, D. (Oregon State Dept. of Energy, Salem, OR (United States)); Bloomquist, R.G. (Washington State Energy Office, Olympia, WA (United States))

1992-12-01T23:59:59.000Z

377

PHNOMNES DITS HYDRO-LECTRIQUES ET HYDRO-MAGNTIQUES; THO-RMES FONDAMENTAUX ET LEUR CONSTATATION EXPRIMENTALE;  

E-Print Network [OSTI]

PH�NOM�NES DITS HYDRO-�LECTRIQUES ET HYDRO-MAGN�TIQUES; TH�O- R�MES FONDAMENTAUX ET LEUR nouveaux phénomènes. Je les désignerai ainsi comme une hydro-électicité, un hydro-magnétisme, etc. Mais'idée, d'aimants au lieu d'hydro-aimants, de masses électriques au lieu de masses hydro-électriques, et

Paris-Sud XI, Université de

378

Value of Wind Power Forecasting  

SciTech Connect (OSTI)

This study, building on the extensive models developed for the Western Wind and Solar Integration Study (WWSIS), uses these WECC models to evaluate the operating cost impacts of improved day-ahead wind forecasts.

Lew, D.; Milligan, M.; Jordan, G.; Piwko, R.

2011-04-01T23:59:59.000Z

379

HEITSCH, R OMISCH --HYDRO-STORAGE SUBPROBLEMS IN POWER GENERATION 1 Hydro-Storage Subproblems in Power Generation  

E-Print Network [OSTI]

HEITSCH, R ¨OMISCH -- HYDRO-STORAGE SUBPROBLEMS IN POWER GENERATION 1 Hydro-Storage Subproblems that owns a hydro-thermal generation sys- tem and trades on the power market often lead to complex stochas- tic optimization problems. We present a new approach to solving stochastic hydro-storage subproblems

Römisch, Werner

380

Stellar Winds on the Main-Sequence I: Wind Model  

E-Print Network [OSTI]

Aims: We develop a method for estimating the properties of stellar winds for low-mass main-sequence stars between masses of 0.4 and 1.1 solar masses at a range of distances from the star. Methods: We use 1D thermal pressure driven hydrodynamic wind models run using the Versatile Advection Code. Using in situ measurements of the solar wind, we produce models for the slow and fast components of the solar wind. We consider two radically different methods for scaling the base temperature of the wind to other stars: in Model A, we assume that wind temperatures are fundamentally linked to coronal temperatures, and in Model B, we assume that the sound speed at the base of the wind is a fixed fraction of the escape velocity. In Paper II of this series, we use observationally constrained rotational evolution models to derive wind mass loss rates. Results: Our model for the solar wind provides an excellent description of the real solar wind far from the solar surface, but is unrealistic within the solar corona. We run ...

Johnstone, C P; Lüftinger, T; Toth, G; Brott, I

2015-01-01T23:59:59.000Z

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


381

The effect of broad-band Alfven-cyclotron waves spectra on the preferential heating and differential acceleration of He{sup ++} ions in the solar wind  

SciTech Connect (OSTI)

In anticipation of results from inner heliospheric missions such as the Solar Orbiter and the Solar Probe we present the results from 1.5D hybrid simulations to study the role of magnetic fluctuations for the heating and differential acceleration of He{sup ++} ions in the solar wind. We consider the effects of nonlinear Alfven-cyclotron waves at different frequency regimes. Monochromatic nonlinear Alfven-alpha-cyclotron waves are known to preferentially heat and accelerate He{sup ++} ions in collisionless low beta plasma. In this study we demonstrate that these effects are preserved when higherfrequency monochromatic and broad-band spectra of Alfven-proton-cyclotron waves are considered. Comparison between several nonlinear monochromatic waves shows that the ion temperatures, anisotropies and relative drift are quantitatively affected by the shift in frequency. Including a broad-band wave-spectrum results in a significant reduction of both the parallel and the perpendicular temperature components for the He{sup ++} ions, whereas the proton heating is barely influenced, with the parallel proton temperature only slightly enhanced. The differential streaming is strongly affected by the available wave power in the resonant daughter ion-acoustic waves. Therefore for the same initial wave energy, the relative drift is significantly reduced in the case of initial wave-spectra in comparison to the simulations with monochromatic waves.

Maneva, Y. G. [Department of Physics, Catholic University of America, Washington DC, 20064 (United States) and Heliophysics Science Devision, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Ofman, L. [Department of Physics, Catholic University of America, Washington, DC 20064 (United States) and Heliophysics Science Devision, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Vinas, A. F. [Heliophysics Science Devision, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

2013-06-13T23:59:59.000Z

382

SOLAR PHYSICS AND TERRESTRIAL EFFECTS Solar-Terrestrial Interactions  

E-Print Network [OSTI]

SOLAR PHYSICS AND TERRESTRIAL EFFECTS Chapter 4 Chapter 4 Solar-Terrestrial Interactions from the charged particles that reach the planet steadily as part of the solar wind and the much it will be deflected into a circular or spiral path by the Lorentz Force. Most charged particles in the solar wind

Mojzsis, Stephen J.

383

Operation of a steam hydro-gasifier in a fluidized bed reactor  

E-Print Network [OSTI]

Using Self-Sustained Hydro- Gasification." [0011] In aprocess, using a steam hydro-gasification reactor (SHR) thepyrolysis and hydro-gasification in a single step. This

Park, Chan Seung; Norbeck, Joseph N.

2008-01-01T23:59:59.000Z

384

Bright Ideas in Solar Energy  

E-Print Network [OSTI]

www.popularmechanics.com/science/energy/solar-wind/3-clever-Molten Nitrate Salt for Solar Energy Storage. Retrieved fromKrisch, J. (2014). 3 Clever New Ways to Store Solar Energy.

Melville, Jo

2014-01-01T23:59:59.000Z

385

A Continuous Solar Thermochemical Hydrogen Production Plant Design  

E-Print Network [OSTI]

energy including hydroelectric, wind, geothermal, biomass, photovoltaic, and solar thermal, each having its own advantages and

Luc, Wesley Wai

386

Community Wind: Once Again Pushing the Envelope of Project Finance  

E-Print Network [OSTI]

lease financing has been popular in the commercial solarlease financing in the wind sector due to wind power’s greater inter-year variability relative to solar (

bolinger, Mark A.

2011-01-01T23:59:59.000Z

387

Vermont Wind Measurement Company Still Strong | Department of...  

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

Vermont Wind Measurement Company Still Strong Vermont Wind Measurement Company Still Strong April 9, 2010 - 3:16pm Addthis NRG's new building utilizes solar power, but their...

388

25 APRIL 2014 VOL 344 SCIENCE www.sciencemag.org352 Tanks for the BatteriesThe need to store energy from wind, solar, and other renewable energy sources  

E-Print Network [OSTI]

from wind, solar, and other renewable energy sources could spark a revival of a dormant battery25 APRIL 2014 VOL 344 SCIENCE www.sciencemag.org352 Tanks for the BatteriesThe need to store energy technology NEWSFOCUS CREDIT:MATTBEARDSLEY/SLACNATIONALACCELERATORLABORATORY EVERY LARGE-SCALE ENERGY SOURCE

Cui, Yi

389

Evaluation of Production Cost Savings from Consolidation of Balancing Authorities in the US Western Interconnection under High Wind and Solar Penetration  

SciTech Connect (OSTI)

This paper introduces a comprehensive analysis to quantify the potential savings in production cost due to consolidation of 32 US western interconnection Balancing Authorities (BAs). Three simulation scenarios are developed: current Western Electricity Coordinating Council (WECC) BAs structure, full copper-sheet consolidation, and full consolidation with transmission congestion considered. The study uses WECC Transmission Expansion Planning Policy Committee (TEPPC) model that was developed for the year 2020. The model assumes 8% wind and 3% solar energy penetration as percentage of total WECC demand in 2020. Sensitivity analyses are carried out to assess the impact of transmission hurdle rates between WECC BAs on potential benefits. The study shows savings that ranges from $400 Million (2.4% of total one year production cost) to $600 Million (3.2%) per year in thermal units production cost due to consolidation can be achieved. The copper sheet consolidation scenario shows an extra savings of $240 Million (1.4%) per year.

Nguyen, Tony B.; Samaan, Nader A.; Jin, Chunlian

2014-12-24T23:59:59.000Z

390

MAGNETIC HELICITY SPECTRUM OF SOLAR WIND FLUCTUATIONS AS A FUNCTION OF THE ANGLE WITH RESPECT TO THE LOCAL MEAN MAGNETIC FIELD  

SciTech Connect (OSTI)

Magnetic field data acquired by the Ulysses spacecraft in high-speed streams over the poles of the Sun are used to investigate the normalized magnetic helicity spectrum {sigma}{sub m} as a function of the angle {theta} between the local mean magnetic field and the flow direction of the solar wind. This spectrum provides important information about the constituent modes at the transition to kinetic scales that occurs near the spectral break separating the inertial range from the dissipation range. The energetically dominant signal at scales near the thermal proton gyroradius k{sub perpendicular{rho}i} {approx} 1 often covers a wide band of propagation angles centered about the perpendicular direction, {theta} {approx_equal} 90{sup 0} {+-} 30{sup 0}. This signal is consistent with a spectrum of obliquely propagating kinetic Alfven waves with k{sub perpendicular} >> k{sub ||} in which there is more energy in waves propagating away from the Sun and along the direction of the local mean magnetic field than toward the Sun. Moreover, this signal is principally responsible for the reduced magnetic helicity spectrum measured using Fourier transform techniques. The observations also reveal a subdominant population of nearly parallel propagating electromagnetic waves near the proton inertial scale k{sub ||} c/{omega}{sub pi} {approx} 1 that often exhibit high magnetic helicity |{sigma}{sub m}| {approx_equal} 1. These waves are believed to be caused by proton pressure anisotropy instabilities that regulate distribution functions in the collisionless solar wind. Because of the existence of a drift of alpha particles with respect to the protons, the proton temperature anisotropy instability that operates when T{sub pperpendicular}/T{sub p||} > 1 preferentially generates outward propagating ion-cyclotron waves and the fire-hose instability that operates when T{sub pperpendicular}/T{sub p||} < 1 preferentially generates inward propagating whistler waves. These kinetic processes provide a natural explanation for the magnetic field observations.

Podesta, J. J.; Gary, S. P., E-mail: jpodesta@solar.stanford.edu [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

2011-06-10T23:59:59.000Z

391

Deceleration of Alpha Particles in the Solar Wind by Instabilities and the Rotational Force: Implications for Heating, Azimuthal Flow, and the Parker Spiral Magnetic Field  

E-Print Network [OSTI]

Protons and alpha particles in the fast solar wind are only weakly collisional and exhibit a number of non-equilibrium features, including relative drifts between particle species. Two non-collisional mechanisms have been proposed for limiting differential flow between alpha particles and protons: plasma instabilities and the rotational force. Both mechanisms decelerate the alpha particles. In this paper, we derive an analytic expression for the rate $Q_{\\mathrm{flow}}$ at which energy is released by alpha-particle deceleration, accounting for azimuthal flow and conservation of total momentum. We find that $Q_{\\mathrm{flow}} > 0 $ at $r r_{\\mathrm{crit}}$. We compare the value of $Q_{\\mathrm{flow}}$ at $r< r_{\\mathrm{crit}}$ with empirical heating rates for protons and alpha particles, denoted $Q_{\\mathrm{p}}$ and $Q_{\\alpha}$, deduced from in-situ measurements of fast-wind streams from the Helios and Ulysses spacecraft. We find that $Q_{\\mathrm{flow}}$ exceeds $Q_{\\alpha}$ at $r < 1\\,\\mathrm{AU}$, $Q_{...

Verscharen, Daniel; Bourouaine, Sofiane; Hollweg, Joseph V

2014-01-01T23:59:59.000Z

392

Impact of High Wind Power Penetration on Hydroelectric Unit Operations: Preprint  

SciTech Connect (OSTI)

This paper examines the impact of this large amount of wind penetration on hydroelectric unit operations. Changes in hydroelectric unit operating unit patterns are examined for an aggregation of all hydro generators.

Hodge, B. M.; Lew, D.; Milligan, M.

2011-10-01T23:59:59.000Z

393

Impact of High Wind Power Penetration on Hydroelectric Unit Operations in the WWSIS  

SciTech Connect (OSTI)

This report examines the impact of this large amount of wind penetration on hydroelectric unit operations. Changes in hydroelectric unit operating patterns are examined both for an aggregation of all hydro generators and for select individual plants.

Hodge, B.-M.; Lew, D.; Milligan, M.

2011-07-01T23:59:59.000Z

394

Loads Analysis of a Floating Offshore Wind Turbine Using Fully Coupled Simulation: Preprint  

SciTech Connect (OSTI)

This paper presents the use of fully coupled aero-hydro-servo-elastic simulation tools to perform a loads analysis of a 5-MW offshore wind turbine supported by a barge with moorings, one of many promising floating platform concepts.

Jonkman, J. M.; Buhl, M. L., Jr.

2007-06-01T23:59:59.000Z

395

ER 100/200, PP C184/284 GSI Section Notes Energy & Society Week 13: Solar, Wind  

E-Print Network [OSTI]

. Photovoltaics: Semiconductor Basics II. Grid Connected Photovoltaic Systems III. Instantaneous and Average Power ______________________________________________________________________________ I. Photovoltaics Basics: What is really going on in a Solar Cell? A silicon atom has four outer? Based on this understanding, what are the main factors that affect the efficiency of turning all

Kammen, Daniel M.

396

hydro | OpenEI Community  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop,SaveWhiskey Flatshydro Home Water Power Forum Description: Forum

397

Coupled hydro-mechanical processes in crytalline rock and in induratedand plastic clays: A comparative discussion  

E-Print Network [OSTI]

at Grimsel. In Coupled Thermo-Hydro- Mechanical-ChemicalCOUPLED HYDRO-MECHANICAL PROCESSES IN CRYTALLINE ROCK AND IN

Tsang, Chin-Fu; Blumling, Peter; Bernier, Frederic

2008-01-01T23:59:59.000Z

398

| JANUARY/FEBRUARY 2014 | Hydro INTERNATIONAL22 symbols and features used on a  

E-Print Network [OSTI]

| JANUARY/FEBRUARY 2014 | Hydro INTERNATIONAL22 symbols and features used on a nautical chart #12;Hydro INT

New Hampshire, University of

399

Transcending the Hydro-Illogical Building a Texas Hydrologic  

E-Print Network [OSTI]

Transcending the Hydro-Illogical Cycle Building a Texas Hydrologic Information System TX-HIS #12;Q to couple streamflow models to GCMs · We need to break the hydro-illogical cycle and plan for the delivery

Yang, Zong-Liang

400

HydroGen | Open Energy Information  

Open Energy Info (EERE)

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

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


401

Advanced Numerical Weather Prediction Techniques for Solar Irradiance Forecasting : : Statistical, Data-Assimilation, and Ensemble Forecasting  

E-Print Network [OSTI]

J.B. , 2004: Probabilistic wind power forecasts using localforecast intervals for wind power output using NWP-predictedsources such as wind and solar power. Integration of this

Mathiesen, Patrick James

2013-01-01T23:59:59.000Z

402

Implications of Wide-Area Geographic Diversity for Short- Term Variability of Solar Power  

E-Print Network [OSTI]

B. , 2007. Utility wind integration and operating impact2010. Western wind and solar integration study. Tech. rep. ,is commonly used in wind integration studies. Murata et

Mills, Andrew

2010-01-01T23:59:59.000Z

403

Implications of geographic diversity for short-term variability and predictability of solar power.  

E-Print Network [OSTI]

B. Parsons, “Utility wind integration and operating impactReport: 2006 Minnesota Wind Integration Study, Volume I.detailed solar and wind integration studies. V. C ONCLUSIONS

Mills, Andrew

2013-01-01T23:59:59.000Z

404

Fraser River Hydro and Fisheries Research Project fonds  

E-Print Network [OSTI]

Fraser River Hydro and Fisheries Research Project fonds Revised by Erwin Wodarczak (1998 Fraser River Hydro and Fisheries Research Project fonds. ­ 19561961. 13 cm of textual records. Administrative History The Fraser River Hydro and Fisheries Research Project was established in 1956, financed

Handy, Todd C.

405

Interconnected hydro-thermal systems Models, methods, and applications  

E-Print Network [OSTI]

Interconnected hydro-thermal systems Models, methods, and applications Magnus Hindsberger Kgs. Lyngby 2003 IMM-PHD-2003-112 Interconnected hydro-thermalsystems #12;Technical University of Denmark 45882673 reception@imm.dtu.dk www.imm.dtu.dk IMM-PHD-2003-112 ISSN 0909-3192 #12;Interconnected hydro

406

Stochastic Co-optimization for Hydro-Electric Power Generation  

E-Print Network [OSTI]

1 Stochastic Co-optimization for Hydro-Electric Power Generation Shi-Jie Deng, Senior Member, IEEE the optimal scheduling problem faced by a hydro-electric power producer that simultaneously participates in multiple markets. Specifically, the hydro-generator participates in both the electricity spot market

407

Forestry Commission Wales Guidance on rental levels for Hydro Power  

E-Print Network [OSTI]

initiated a process to facilitate the development of small- scale hydro-electricity schemes on land ownedForestry Commission Wales Guidance on rental levels for Hydro Power Guidance on rental levels for hydro power projects Tel: 02920 475961 Email: hydrowales@forestry.gsi.gov.uk Version 1.0 Mike Pitcher 17

408

NOAA Technical Memorandum NWS HYDRO 45 RELATIONSHIP BETWEEN  

E-Print Network [OSTI]

NOAA Technical Memorandum NWS HYDRO 45 RELATIONSHIP BETWEEN STORM AND ANTECEDENT PRECIPITATION OVER TECHNICAL MEMORANDUMS National Weather Service. Office of Hydrology Series The Office of Hydrology (HYDRO and development. NOAA Technical Memorandums in the NWS HYDRO series facilitate prompt distribution of scientific

409

Atomic scale mixing for inertial confinement fusion associated hydro instabilities  

E-Print Network [OSTI]

Atomic scale mixing for inertial confinement fusion associated hydro instabilities J. Melvina, , P Alamos, NM 87545, USA Abstract Hydro instabilities have been identified as a potential cause- able. We find numerical convergence for this important quantity, in a purely hydro study, with only

New York at Stoney Brook, State University of

410

NOAA Technical Memorandum NWS HYDRO 46 A CLIMATIC ANALYSIS  

E-Print Network [OSTI]

NOAA Technical Memorandum NWS HYDRO 46 A CLIMATIC ANALYSIS OF OROGRAPHIC PRECIPITATION OVER THE BIGHydrology (HYDRO) ofthe National Weather Service (NWS) develops procedures for making river and water supply, and conducts pertinent research and development NOAA Teclmical Memorandums in the NWS HYDRO series facilitate

411

Ontario Hydro`s transportation of radioactive material and emergency response plan  

SciTech Connect (OSTI)

Ontario Hydro has been transporting radioactive material for almost 30 years without any exposure to the public or release to the environment. However, there have been three accidents involving Hydro`s shipments of radioactive material. In addition to the quality packaging and shipping program, Ontario Hydro has an Emergency Response Plan and capability to deal with an accident involving a shipment of radioactive material. The Corporation`s ability to respond, to effectively control and contain the situation, site remediation, and to provide emergency public information in the event of a road accident minimizes the risk to the public and the environment. This emphasizes their commitment to worker safety, public safety and impact to the environment. Response capability is mandated under various legislation and regulations in Canada.

Karmali, N. [Ontario Hydro, Toronto, Ontario (Canada). Nuclear Operations Branch

1993-12-31T23:59:59.000Z

412

LANL hydro test update(u)  

SciTech Connect (OSTI)

Briefings presenting W78 programmatic activities for FY11 and the status and plan for associated Hydro 3617, is included wherewith in support of the NNSA W78 Program Review Meeting scheduled for January 11 thru 13, 2011, at the Savannah River Plant, SC.

Aragon, Ezekiel D [Los Alamos National Laboratory

2011-01-06T23:59:59.000Z

413

3-D hydro + cascade model at RHIC  

E-Print Network [OSTI]

We present a 3-D hydro + cascade model in which viscosity and a realistic freezeout process for the hadronic phase are taken into account. We compare our results to experimental data and discuss the finite state interaction effects on physical observables.

Chiho Nonaka; Steffen A. Bass

2005-11-07T23:59:59.000Z

414

THERMO-HYDRO-MECHANICAL SIMULATION OF GEOTHERMAL  

E-Print Network [OSTI]

THERMO-HYDRO-MECHANICAL SIMULATION OF GEOTHERMAL RESERVOIR STIMULATIONRESERVOIR STIMULATION Silvia Seminario del Grupo de Hidrologìa Subterrànea - UPC, Barcelona #12;INTRODUCTION Enhanced geothermal systems Geothermal gradient ~ 33 °C/Km Hydraulic stimulation enhances fracture permeability (energy

Politècnica de Catalunya, Universitat

415

Doctoral Defense "Thermal-hydro-mechanical model  

E-Print Network [OSTI]

Doctoral Defense "Thermal-hydro-mechanical model for freezing and thawing soils" Yao Zhang Date & Environmental Engineering Frost susceptible soils are vulnerable to frost action in seasonal freezing as well and strengthening occurs as the soils freeze, whereas settlement and thaw weakening is expected during the melting

Kamat, Vineet R.

416

Print http://us.mg4.mail.yahoo.comfneo/launch?.rand=deOsgk04ks40i Subject: Re: [s-w-h] Solar verses wind efficiency  

E-Print Network [OSTI]

wind efficiency From: David Raine (dave@dyocore.com) To: wind4energy@yahoo.com; Date: Thursday Raine 760-580-4271 On Feb 10,2011, at 6:43 PM, Michael Klemen wind4energy@yahoo.com> wrote: David, I of energy or performance information for public consumption. Low speed wind conversion can be accomplished

417

Integrated Dynamic Analysis of Floating Offshore Wind Turbines Bjrn Skaare*, Tor David Hanson*, Finn Gunnar Nielsen*, Rune Yttervik*, Anders Melchior Hansen**,  

E-Print Network [OSTI]

Integrated Dynamic Analysis of Floating Offshore Wind Turbines Bjørn Skaare*, Tor David Hanson of floating wind turbines exposed to forces from wind, waves and current has been developed for Hydro Oil & Energy's floating wind turbine concept, HYWIND. Two existing, independent, computer program systems

418

Hydrogen from Diverse Domestic ResourcesHydrogen from Diverse Domestic Resources Distributed  

E-Print Network [OSTI]

Sequestration Biomass Hydro Wind Solar Biomass Hydro Wind Solar Coal Nuclear Natural Gas Oil Sequestration #12 on foreign oil. · Promote the use of diverse, domestic, and sustainable energy sources. · Reduce carbon

419

Evaluating China's pilot lowcarbon city initiative: nationa goals and local plans  

E-Print Network [OSTI]

Industrial energy audit Hydro Wind Clean energy supply Biogas Biomass PV solar Geothermal Waste Coal-bed Methane Heat pump

Khanna, Nina

2014-01-01T23:59:59.000Z

420

Gas Diffusion in Metals: Fundamental Study of Helium-Point Defect Interactions in Iron and Kinetics of Hydrogen Desorption from Zirconium Hydride  

E-Print Network [OSTI]

sources for electricity constitute a diverse group, from wind, solar, tidal and wave energy to hydro, geothermal and

Hu, Xunxiang

2013-01-01T23:59:59.000Z

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


421

The U.S. National Hydrogen Storage Project Overview (presentation...  

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

ZERONEAR ZERO EMISSIONS Transportation Coal with carbon sequestration Natural Gas* Nuclear Distributed Generation Hydro Wind Solar Geothermal Biomass *Transition only...

422

Review of EMGC's Recommendations for Net Metering  

E-Print Network [OSTI]

-generate" electricity using technologies such as solar PV, wind, and micro-hydro. When using these technologies, which

Hughes, Larry

423

kjkj kjkjkjkj kj Path: T:\\Projects\\CEC\\TLPP_Maps\\Statewide PP\\ARCGIS\\State OpPP_A.mxdDate: 8/28/2012  

E-Print Network [OSTI]

!( OIL/GAS kj SOLAR ã WIND " BIOMASS # COAL $1 DIGESTER GAS ^_ GEOTHERMAL # HYDRO %, LANDFILL GAS Legend

424

Austin, Texas: Solar in Action (Brochure), Solar America Cities...  

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

* An assessment of the opportunity to load co-located wind and solar generation capacity onto a constrained transmission system while resulting in minimal losses. Case...

425

Implications of geographic diversity for short-term variability and predictability of solar power.  

E-Print Network [OSTI]

Term variability of solar power,” Lawrence Berkeley Nationaldue to wind and solar power,” Environmental Science &and Predictability of Solar Power Andrew D. Mills and Ryan

Mills, Andrew

2013-01-01T23:59:59.000Z

426

Wind derivatives: hedging wind risk:.  

E-Print Network [OSTI]

??Wind derivatives are financial contracts that can be used to hedge or mitigate wind risk. In this thesis, the focus was on pricing these wind… (more)

Hoyer, S.A.

2013-01-01T23:59:59.000Z

427

Wind | Department of Energy  

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

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

428

Hour-by-Hour Cost Modeling of Optimized Central Wind-Based Water...  

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

Hydrogen Production for Energy Storage & Transportation Liquid Hydrogen Production and Delivery from a Dedicated Wind Power Plant Final Solar and Wind H2 Report EPAct 812.doc...

429

E-Print Network 3.0 - atmospheric wind sensor Sample Search Results  

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

to measure wind speed, wind direction, air... temperature, atmospheric pressure and solar radiation. The sensors and data-logger are mounted on 25-m high... calibration of...

430

Optimizing Trading Decisions for Hydro Storage Systems using ...  

E-Print Network [OSTI]

Trading with a system of hydro storage plants in a wholesale electricity market involves many decisions ...... prices due to higher demand for heating and cooling.

2012-09-19T23:59:59.000Z

431

Robust optimization based self scheduling of hydro-thermal Genco ...  

E-Print Network [OSTI]

Dec 29, 2013 ... Abstract: This paper proposes a robust optimization model for optimal self scheduling of a hydro-thermal generating company. The proposed ...

Alireza Soroudi

2013-12-29T23:59:59.000Z

432

A Hydro-Thermo-Mechanical Numerical Model For Hdr Geothermal...  

Open Energy Info (EERE)

to the most hydraulically conductive fractures in two orthogonal and vertical fracture sets. The mathematical model representing the hydro-mechanical interactions that are...

433

Microsoft Word - SNOPUD_Youngs_Cr_Hydro_CX_+_Checklist.doc  

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

Interconnection of Snohomish County Public Utility District No.1 (SNOPUD) Young's Creek Hydro Small Generation Budget Information: WO 00231295, Task 01 Categorical Exclusion...

434

Rye Patch geothermal development, hydro-chemistry of thermal...  

Open Energy Info (EERE)

development, hydro-chemistry of thermal water applied to resource definition Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Rye Patch geothermal...

435

Wind load reduction for heliostats  

SciTech Connect (OSTI)

This report presents the results of wind-tunnel tests supported through the Solar Energy Research Institute (SERI) by the Office of Solar Thermal Technology of the US Department of Energy as part of the SERI research effort on innovative concentrators. As gravity loads on drive mechanisms are reduced through stretched-membrane technology, the wind-load contribution of the required drive capacity increases in percentage. Reduction of wind loads can provide economy in support structure and heliostat drive. Wind-tunnel tests have been directed at finding methods to reduce wind loads on heliostats. The tests investigated primarily the mean forces, moments, and the possibility of measuring fluctuating forces in anticipation of reducing those forces. A significant increase in ability to predict heliostat wind loads and their reduction within a heliostat field was achieved.

Peterka, J.A.; Hosoya, N.; Bienkiewicz, B.; Cermak, J.E.

1986-05-01T23:59:59.000Z

436

Power Electronics and Controls for Wind Turbine F. Blaabjerg, F. Iov, Z. Chen, K. Ma  

E-Print Network [OSTI]

was in the beginning based on a squirrel-cage induction generator connected directly to the grid. Power pulsations technologies used in wind turbine systems. I. INTRODUCTION In classical power systems, large power generation such as wind turbines, wave generators, photovoltaic (PV) generators, small hydro, fuel cells and gas

Chen, Zhe

437

Environmental Assessment and Metrics for Solar: Case Study of SolFocus Solar Concentrator Systems  

E-Print Network [OSTI]

Greenhouse gas analysis of solar-thermal electricity gen-CdTe Concentrator PV Solar Thermal Wind Coal CC Gas Turbinefor the assessment of thermal solar systems,” Proceedings of

Reich-Weiser, Corinne; Dornfeld, David; Horne, Steve

2008-01-01T23:59:59.000Z

438

Thermo-hydro-chemical Predictive analysis for the drift-scale predictive heater test,  

E-Print Network [OSTI]

Characterization Project Thermo-Hydro-Chemical Predictive90-1116 Berkeley, C A 94720 Thermo-Hydro-Chemical PredictiveVersion 1.0 Thermo-Hydro-Chemical Predictive Analysis for

Sonnenthal, Eric L.; Spycher, Nicolas; Apps, John; Simmons, Ardyth

1998-01-01T23:59:59.000Z

439

Operation of a steam hydro-gasifier in a fluidized bed reactor  

E-Print Network [OSTI]

OPERATION OF A S T E A M HYDRO-GASIFIER IN A FLUIDIZED BEDMaterial Using Self-Sustained Hydro- Gasification." [0011]the process, using a steam hydro-gasification reactor (SHR)

Park, Chan Seung; Norbeck, Joseph N.

2008-01-01T23:59:59.000Z

440

Optimierung eines hydro-thermischen Kraftwerks-systems unter Ungewi heit  

E-Print Network [OSTI]

Optimierung eines hydro-thermischen Kraftwerks- systems unter Ungewi heit Dr. rer. nat. N. Growe Arbeit beschreiben wir ein stochastisches Modell fur den ko- stenoptimalen Einsatz eines hydro ein, entwickeln ein Losungsverfahren und validieren dies am Beispiel des hydro

Römisch, Werner

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


441

Voith Hydro Wavegen Limited | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov PtyInformationSEDS data Jump to: navigation, search ToolVoith Hydro Wavegen

442

Ascent Hydro Projects Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160 East 300AlgoilEnergyElectric Coop CorpInformation ArthurAscendantHydro Projects

443

HydroChina Corporation | Open Energy Information  

Open Energy Info (EERE)

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

444

Property:HydroSystem | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExploration Jump to:FieldProceduresFY JumpThis is a property ofHydroSystem Jump to:

445

E-Print Network 3.0 - atmosphere-sea hydro-ecological model Sample...  

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

sensitive to climate change because numerous hydro-ecological processes respond to even small changes... (see section on general hydro-ecology and 6). Even more dramatic...

446

Preliminary Assumptions for Wind Technologies  

E-Print Network [OSTI]

) Mountain Air Wind Farm (138 MW) ­ Elmore County, ID (Image courtesy of Terna-Energy) 3 #12;Current of operation Investment Tax Credit (ITC) alternative 30% towards developer's income tax for qualifying solar" prior to 12/31/16 Post-2016, credit drops to 10% - solar PV, geothermal 6 #12;Status of Regional RPS

447

POWER SCHEDULING IN A HYDRO-THERMAL SYSTEM UNDER UNCERTAINTY  

E-Print Network [OSTI]

POWER SCHEDULING IN A HYDRO-THERMAL SYSTEM UNDER UNCERTAINTY C.C. Car e1, M.P. Nowak2, W. Romisch2 Forschungsgemeinschaft. leads to a tremendous increase in the complex- ity of the traditional power optimization mod- els-burning) thermal units, pumped-storage hydro plants and delivery con- tracts and describe an optimization model

Römisch, Werner

448

Hydro-Thermal Scheduling (HTS) 1.0 Introduction  

E-Print Network [OSTI]

1 Hydro-Thermal Scheduling (HTS) 1.0 Introduction From an overall systems view, the single most, relative to that of thermal plants, are very small. There are three basic types of hydroelectric plants;2 Pump-storage This kind of hydro plant is a specialized reservoir-type plant which has capability to act

McCalley, James D.

449

NH4-smectite: Characterization, hydration properties and hydro mechanical behaviour  

E-Print Network [OSTI]

NH4-smectite: Characterization, hydration properties and hydro mechanical behaviour M. Gautier a and drive to environmental problems. The purpose of this study was to understand the hydro- physical changes the pressure on small amounts of samples, proved the strong increase of the permeability of NH4-smectite

Paris-Sud XI, Université de

450

Subsidizing Solar: The Case for an Environmental Goods and Services Carve-out from the Global Subsidies Regime  

E-Print Network [OSTI]

solar collectors and system controllers, wind- turbine parts and components, stoves, grates and cookers,

Simmons, Zachary Scott

2014-01-01T23:59:59.000Z

451

A STARMA MODEL FOR SOLAR RADIATION Chris Glasbey & Dave Allcroft  

E-Print Network [OSTI]

stabilizing the intermittency of wind power. If the car has installed solar panel, it may further generate

Glasbey, Chris

452

Optimal sequencing site of hydro-power stations  

SciTech Connect (OSTI)

At the first stage of a hydro-power survey of a river, it is important to select the optimal hydro-power site. The most important condition to be satisfied is to determine the optimal site where the greatest and most economical amount of hydro-energy can be obtained. This paper proposes a new method in which the optimal arrangement of the hydro-power stations is determined by a computational operation using discrete data at points along the river such as the drainage area, altitude, and distance along the river channel as obtained from topographical maps instead of drawing on engineers` experiences and the intuitions of experts. The results by this method are then compared with data on existing hydro-power stations and the results planned by expert engineers to show that this new computational method is superior.

Hayashi, T.; Yoshino, F.; Waka, R. [Tottori Univ., Koyama (Japan). Dept. of Mechanical Engineering

1995-06-01T23:59:59.000Z

453

WIND ENERGY Wind Energ. (2014)  

E-Print Network [OSTI]

WIND ENERGY Wind Energ. (2014) Published online in Wiley Online Library (wileyonlinelibrary Correspondence M. Wächter, ForWind-Center for Wind Energy Research, Institute of Physics, Carl Von Ossietzky on the operation of wind energy converters (WECs) imposing different risks especially in terms of highly dynamic

Peinke, Joachim

454

Essays on the Economics of Environmental Issues: The Environmental Kuznets Curve to Optimal Energy Portfolios  

E-Print Network [OSTI]

153 for hydro and geothermal power to .042 for petroleum.energy. For wind, geothermal, and solar power, the resultscost variations in geothermal and wind power. In evaluating

Meininger, Aaron G.

2012-01-01T23:59:59.000Z

455

Promoting electricity from renewable energy sources -- lessons learned from the EU, U.S. and Japan  

E-Print Network [OSTI]

prices per TGC (in size of 1MWh) of: offshore wind 90 €, on-shore wind 50€, hydro: 50€, solar energy:

Haas, Reinhard

2008-01-01T23:59:59.000Z

456

Solar Phys (2009) 256: 285305 DOI 10.1007/s11207-009-9354-5  

E-Print Network [OSTI]

Solar Phys (2009) 256: 285­305 DOI 10.1007/s11207-009-9354-5 STEREO SCIENCE RESULTS AT SOLAR MINIMUM Solar Wind Sources in the Late Declining Phase of Cycle 23: Effects of the Weak Solar Polar Field.com Abstract The declining phases of solar cycles are known for their high speed solar wind streams

California at Berkeley, University of

457

Solar and wind power advancing  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"Click worksheet9,1,50022,3,,,,6,1,,781 2,328AdministrationRelease Schedule ReleaseEconomicMarket

458

Overview of Renewables for Power Rangan Banerjee  

E-Print Network [OSTI]

;Wind Solar Small Hydro Biomass Tidal Energy Wave Energy Ocean Thermal Energy Solar Thermal Solar Gasifier 69 70% 423 Bagasse Cogeneration 379 60% 1992 Small Hydro 1603 50% 7021 Waste to Energy 41 70% 251 Coal Oil Gas Nuclear Biomass PV Hydro-electric Wind CO2 g/kWh 960 -1300 800-860 690-870 460-1230 9

Banerjee, Rangan

459

Capacity Value of Solar Power  

SciTech Connect (OSTI)

Evaluating the capacity value of renewable energy sources can pose significant challenges due to their variable and uncertain nature. In this paper the capacity value of solar power is investigated. Solar capacity value metrics and their associated calculation methodologies are reviewed and several solar capacity studies are summarized. The differences between wind and solar power are examined, the economic importance of solar capacity value is discussed and other assessments and recommendations are presented.

Duignan, Roisin; Dent, Chris; Mills, Andrew; Samaan, Nader A.; Milligan, Michael; Keane, Andrew; O'Malley, Mark

2012-11-10T23:59:59.000Z

460

Strongly Correlated Electron Systems Functionalized for Solar Cells and Memristors  

E-Print Network [OSTI]

" #12;Grand Energy Challenge Gap between production and demand: ~14TW by 2050 Install one 1GW new power Demand total industrial developing US ee/fsu Energy source World Capacity Solar Geothermal Biomass Hydro Optimization of gap: max efficiency: 31% (Shockley Queisser 1961) In real PV cells 80-85% of incident solar

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


461

Wind energy systems information user study  

SciTech Connect (OSTI)

This report describes the results of a series of telephone interviews with potential users of information on wind energy conversion. These interviews, part of a larger study covering nine different solar technologies, attempted to identify: the type of information each distinctive group of information users needed, and the best way of getting information to that group. Groups studied include: wind energy conversion system researchers; wind energy conversion system manufacturer representatives; wind energy conversion system distributors; wind turbine engineers; utility representatives; educators; county agents and extension service agents; and wind turbine owners.

Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

1981-01-01T23:59:59.000Z

462

Revised: Jan 20, 2014 56:155 [IE:4550] Wind Power Management  

E-Print Network [OSTI]

turbines, location and design of wind farms, control of turbines and wind farms, predictive modeling and systems, wind farm performance optimization, and integration of wind power with a grid. The modeling://www.nccc.gov.sg/renewables/biomass.shtm Solar http://www.nccc.gov.sg/renewables/solar.shtm #12;2 Hydrogen/Fuel Cells http

Kusiak, Andrew

463

Canonical Correlation Analysis (CCA) of GRACE, hydrological and hydro-meteorological signals  

E-Print Network [OSTI]

1 Canonical Correlation Analysis (CCA) of GRACE, hydrological and hydro-meteorological signals M. J and Hydro-meteorology Hydrology GRACE Hydro-meteorology RQ dt dS dt dMdS RETP . dt AH a #12;3 GRACE, times based signals #12;12 CCA on catchments based ­ GRACE and hydro-meteorology T GDGDGD T VUQ dt d

Stuttgart, Universität

464

WIND ENERGY Wind Energ. (2014)  

E-Print Network [OSTI]

in the near wake. In conclusion, WiTTS performs satisfactorily in the rotor region of wind turbine wakes under neutral stability. Copyright © 2014 John Wiley & Sons, Ltd. KEYWORDS wind turbine wake; wake model; self in wind farms along several rows and columns. Because wind turbines generate wakes that propagate downwind

2014-01-01T23:59:59.000Z

465

Magnetohydrodynamics and Solar Physics  

E-Print Network [OSTI]

In this short review, I present some of the recent progresses on the pending questions of solar physics. These questions let us revisit the solar wind, the solar dynamo problem, the dynamics of the photosphere and finally have a glimpse at other solar type stars. Discussing the use of direct numerical simulations in solar physics, I show that the full numerical calculation of the flow in a single supergranule would require more electric power than the luminosity of the sun itself with present computer technology.

Rieutord, Michel

2014-01-01T23:59:59.000Z

466

Hawaii Solar Integration Study Final Technical Report for Oahu  

E-Print Network [OSTI]

Hawaii Solar Integration Study Final Technical Report for Oahu Prepared for: The National Renewable ..................................................................................................................19 4.5. Statistical analysis of wind, solar and load data ................................................................................................................................... 21 5.1. Solar Site Selection Process

467

Hydro-Gravitational-Dynamics of Planets and Dark Energy  

E-Print Network [OSTI]

Self-gravitational fluid mechanical methods termed hydro-gravitational-dynamics (HGD) predict plasma fragmentation 0.03 Myr after the turbulent big bang to form protosuperclustervoids, turbulent protosuperclusters, and protogalaxies at the 0.3 Myr transition from plasma to gas. Linear protogalaxyclusters fragment at 0.003 Mpc viscous-inertial scales along turbulent vortex lines or in spirals, as observed. The plasma protogalaxies fragment on transition into white-hot planet-mass gas clouds (PFPs) in million-solar-mass clumps (PGCs) that become globular-star-clusters (GCs) from tidal forces or dark matter (PGCs) by freezing and diffusion into 0.3 Mpc halos with 97% of the galaxy mass. The weakly collisional non-baryonic dark matter diffuses to > Mpc scales and frag-ments to form galaxy cluster halos. Stars and larger planets form by binary mergers of the trillion PFPs per PGC on 0.03 Mpc galaxy accretion disks. Star deaths depend on rates of planet accretion and internal star mixing. Moderate accretion rates produce white dwarfs that evaporate surrounding gas planets by spin-radiation to form planetary nebulae before Supernova Ia events, dimming some events to give systematic distance errors misinterpreted as the dark energy hypothesis and overestimates of the universe age. Failures of standard LCDM cosmological models reflect not only obsolete Jeans 1902 fluid mechanical assumptions, but also failures of standard turbulence models that claim the cascade of turbulent kinetic energy is from large scales to small. Because turbulence is always driven at all scales by inertial-vortex forces the turbulence cascade is always from small scales to large.

Carl H. Gibson; Rudolph E. Schild

2008-08-24T23:59:59.000Z

468

Do You Wonder How Much Energy Your Home Could Get from Solar...  

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

you, you might be interested in these other resources from EERE: Small Solar Electric Systems Small Wind Electric Systems Small Wind for Homeowners, Ranchers, and Small Businesses...

469

Hawaii Solar Integration Study: Executive Summary  

Office of Energy Efficiency and Renewable Energy (EERE)

Detailed technical examination of the effects of high penetrations of solar and wind energy on the operations of the electric grids of Maui and Oahu. 

470

EIS-0166: Bangor Hydro-Electric Transmission Line, Maine  

Broader source: Energy.gov [DOE]

The Department of Energy prepared this environmental impact statement while considering whether to authorize a Presidential permit for Bangor Hydro to construct a new electric transmission facility at the U.S. border with Canada.

471

Flood survival: Getting a hydro plant back on line  

SciTech Connect (OSTI)

The Remmel Dam and Hydro Plant of Arkansas Power and Light Company was flooded on May 20, 1990. This article describes the teamwork and innovation that went into restoring the powerhouse in a short amount of time.

Weatherford, C.W. (Entergy Services, Inc., Little Rock, AR (United States))

1991-12-01T23:59:59.000Z

472

Tracking Progress Last updated 10/7/2013 Installed Capacity 1  

E-Print Network [OSTI]

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Capacity (MW) Wind Solar Small Hydro Large Hydro,813 Large Hydro 11,890 11,755 11,755 12,114 12,103 12,194 11,945 12,226 12,226 12,257 12,297 12,297 Small 2008 2009 2010 2011 2012 Energy (GWh) Wind Solar Small Hydro Large Hydro Natural Gas Nuclear Geothermal

473

Hydro-Balanced Stuffing Box field test  

SciTech Connect (OSTI)

The Hydro-Balanced Stuffing Box is a seal assembly for polished rod pumping installations commonly used in oil and gas pumping well installations to contain produced well fluids. The improved stuffing box was developed and patented by Harold H. Palmour of The Palmour Group of Livingston, TX. The stuffing box is designed to reduce the incidence of seal leakage and to utilize an environmentally safe fluid, so that if there is any leakage, environmental damage is reduced or eliminated. The unit was tested on two wells at the Rocky Mountain Oilfield Testing Center. During the test period, the performance of the stuffing box was measured by monitoring the pressure on the tubing and the inner chamber with a Barton Two-pen recorder. The amount of safe fluid consumed, fluid leakage at the top of the stuffing box, pressure supplied from the nitrogen bottle, ambient temperature, and polish rod temperature was recorded. The stuffing box is capable of providing a better seal between well fluids an d the environment than conventional stuffing boxes. It allows the polished rod to operate cooler and with lubrication, extending the life of the packing elements, and reducing the amount of attention required to prevent leakage.

Giangiacomo, L.A.

1999-05-28T23:59:59.000Z

474

Wind Farm  

Office of Energy Efficiency and Renewable Energy (EERE)

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

475

Wasted Wind  

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

why turbulent airflows are causing power losses and turbine failures in America's wind farms-and what to do about it April 1, 2014 Wasted Wind This aerial photo of Denmark's Horns...

476

Wind Energy  

Broader source: Energy.gov [DOE]

Presentation covers wind energy at the Federal Utility Partnership Working Group (FUPWG) meeting, held on November 18-19, 2009.

477

Cost-minimized combinations of wind power, solar power and electrochemical storage, powering the grid up to 99.9% of the time  

E-Print Network [OSTI]

. Due to the design constraints of both climate mitigation and fossil fuel depletion, the possibility wind, and photovoltaics) with electrochemical storage (batteries and fuel cells), incorporated of electricity without subsidies and with inclusion of external costs. Our model evaluated over 28 billion

Firestone, Jeremy

478

Evolving Einstein's Field Equations with Matter: The ``Hydro without Hydro'' Test  

E-Print Network [OSTI]

We include matter sources in Einstein's field equations and show that our recently proposed 3+1 evolution scheme can stably evolve strong-field solutions. We insert in our code known matter solutions, namely the Oppenheimer-Volkoff solution for a static star and the Oppenheimer-Snyder solution for homogeneous dust sphere collapse to a black hole, and evolve the gravitational field equations. We find that we can evolve stably static, strong-field stars for arbitrarily long times and can follow dust sphere collapse accurately well past black hole formation. These tests are useful diagnostics for fully self-consistent, stable hydrodynamical simulations in 3+1 general relativity. Moreover, they suggest a successive approximation scheme for determining gravitational waveforms from strong-field sources dominated by longitudinal fields, like binary neutron stars: approximate quasi-equilibrium models can serve as sources for the transverse field equations, which can be evolved without having to re-solve the hydrodynamical equations (``hydro without hydro'').

Thomas W. Baumgarte; Scott A. Hughes; Stuart L. Shapiro

1999-02-09T23:59:59.000Z

479

Alternative Energy Development and China's Energy Future  

E-Print Network [OSTI]

renewable energy source and with abundant solar resources inEnergy Generation and Sources 2005 Actual Wind Solar Biomasssources of non- fossil electricity generation including wind, solar, hydro, nuclear and geothermal, renewable energy

Zheng, Nina

2012-01-01T23:59:59.000Z

480

Assess the key physics that underpins high-hydro coupling-efficiency in NDCX-II experiments and high-gain heavy ion direct drive target designs using proven hydro codes like HYDRA  

E-Print Network [OSTI]

physics that underpins high-hydro coupling-efficiency in N Dtarget designs using proven hydro codes like H Y D R A . byF E targets, we have studied hydro and implosion efficiency

Barnard, J. J.

2010-01-01T23:59:59.000Z

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


481

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

SciTech Connect (OSTI)

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

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

2014-02-01T23:59:59.000Z

482

SERI advanced wind turbine blades  

SciTech Connect (OSTI)

The primary goal of the Solar Energy Research Institute`s (SERI) advanced wind turbine blades is to convert the kinetic energy in the wind into mechanical energy in an inexpensive and efficient manner. To accomplish this goal, advanced wind turbine blades have been developed by SERI that utilize unique airfoil technology. Performance characteristics of the advanced blades were verified through atmospheric testing on fixed-pitch, stall-regulated horizontal-axis wind turbines (HAWTs). Of the various wind turbine configurations, the stall-regulated HAWT dominates the market because of its simplicity and low cost. Results of the atmospheric tests show that the SERI advanced blades produce 10% to 30% more energy than conventional blades. 6 refs.

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

1992-02-01T23:59:59.000Z

483

SERI advanced wind turbine blades  

SciTech Connect (OSTI)

The primary goal of the Solar Energy Research Institute's (SERI) advanced wind turbine blades is to convert the kinetic energy in the wind into mechanical energy in an inexpensive and efficient manner. To accomplish this goal, advanced wind turbine blades have been developed by SERI that utilize unique airfoil technology. Performance characteristics of the advanced blades were verified through atmospheric testing on fixed-pitch, stall-regulated horizontal-axis wind turbines (HAWTs). Of the various wind turbine configurations, the stall-regulated HAWT dominates the market because of its simplicity and low cost. Results of the atmospheric tests show that the SERI advanced blades produce 10% to 30% more energy than conventional blades. 6 refs.

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

1992-02-01T23:59:59.000Z

484

Microsoft PowerPoint - 1-D-3-Replacement-Maldonado-CTE Reliability...  

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

as of 30 September 2010, all segments combined UK Wind 227 MW Belgium Offshore Germany Wind 3 MW France Wind - Solar Hydro United States Wind 227 MW Offshore 30 MW 3 MW Bulgaria...

485

California Energy and Consumption Projections 2005-2050  

E-Print Network [OSTI]

State NG US NG Imports State Nuclear US Nuclear Imports Biomass Solar Wind Small Hydro 1.0 Quad BTUs 4 Hydro Renewable Energy Biomass Solar Wind Geothermal #12;Model Energy Consumption in Quads Take the 2005 by Source Year 2005 Year 2050 Natural Gas (Heating) Gas/Diesel (Heating/Trans) Hydro (Electricity) Coal

Keller, Arturo A.

486

Florida Hydro Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6Theoretical vs Actual DataNext 25High School WindFlorida

487

Geo Hydro Supply | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation, searchGeauga County, Ohio: EnergySector: SolarGenoa is a

488

Climatic regulation of the Black Sea hydro-meteorological and ecological properties at interannual-to-decadal time scales  

E-Print Network [OSTI]

Climatic regulation of the Black Sea hydro-meteorological and ecological properties at interannual Available online 3 March 2006 Abstract An examination of a wide spectrum of hydro

Dippner, Joachim W.

489

Application of life cycle assessment methodology at Ontario Hydro  

SciTech Connect (OSTI)

Ontario Hydro is an electrical utility located in Ontario, Canada. In 1995, Ontario Hydro adopted Sustainable Energy Development Policy and Principles that include the governing principle: {open_quotes}Ontario Hydro will integrate environmental and social factors into its planning, decision-making, and business practices.{close_quotes} Life cycle assessment was identified as a useful tool for evaluating environmental impacts of products and processes in support of decision-making. Ontario Hydro has developed a methodology for life cycle assessment (LCA) that is consistent with generally accepted practices, practical, and suitable for application in Ontario Hydro Business Units. The methodology is based on that developed by the Society of Environmental Toxicology and Chemistry (SETAC) but follows a pragmatic and somewhat simplified approach. In scoping an LCA, the breadth and depth of analysis are compatible with and sufficient to address the stated goal of the study. The depth of analysis is tied to (i) the dollar value of the commodity, process or activity being assessed, (ii) the degree of freedom available to the assessor to make meaningful choices among options, and (iii) the importance of the environmental or technological issues leading to the evaluation. A pilot study was completed to apply the methodology to an LCA of the light vehicle fleet (cars, vans and light pick-up trucks) at Ontario Hydro. The objective of the LCA was to compare the life cycle impacts of alternative vehicle fuel cycles: gasoline, diesel, natural gas, propane, and alcohol; with particular focus on life cycle emissions, efficiency and cost. The study concluded that for large vehicles (1/2 ton and 3/4 ton) that travel more than 35000 km/year, natural gas and propane fuelling offer both cost reduction and emissions reduction when compared to gasoline vehicles.

Reuber, B.; Khan, A. [Ontario Hydro, Ontario (Canada)

1996-12-31T23:59:59.000Z

490

E-Print Network 3.0 - antas river hydro Sample Search Results  

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

Luytens Close, Chineham, Hants, UK Summary: productivity and lifetime. Hydropower on a small-scale, or micro-hydro, is the exploitation of a river's hydro... of the water at the...

491

Hydro-Ecologic Responses to Land Use in Small Urbanizing Watersheds Within the Chesapeake Bay  

E-Print Network [OSTI]

Hydro-Ecologic Responses to Land Use in Small Urbanizing Watersheds Within the Chesapeake Bay. The consequences for both the hydrology and 41 #12;42 HYDRO-ECOLOGIC RESPONSES TO LAND USE IN SMALL URBANIZING

Palmer, Margaret A.

492

Simulated watershed responses to land cover changes using the Regional Hydro-Ecological Simulation System  

E-Print Network [OSTI]

Simulated watershed responses to land cover changes using the Regional Hydro-Ecological Simulation Old Main Hill, Logan, UT, 84322-8200, USA Abstract: In this work, we used the Regional Hydro

Tarboton, David

493

Maximizing Energy Savings Reliability in BC Hydro Industrial Demand-side Management Programs  

E-Print Network [OSTI]

Maximizing Energy Savings Reliability in BC Hydro Industrial Demand-side Management Programs Supervisory Committee Maximizing Energy Savings Reliability in BC Hydro Industrial Demand-side Management of Environmental Studies) Departmental Member For energy utilities faced with expanded jurisdictional energy

Victoria, University of

494

Building and Calibration of a FAST Model of the SWAY Prototype Floating Wind Turbine: Preprint  

SciTech Connect (OSTI)

Present efforts to verify and validate aero-hydro-servo-elastic numerical simulation tools that predict the dynamic response of a floating offshore wind turbine are primarily limited to code-to-code comparisons or code-to-data comparisons using data from wind-wave basin tests. In partnership with SWAY AS, the National Renewable Energy Laboratory (NREL) installed scientific wind, wave, and motion measurement equipment on the 1/6.5th-scale prototype SWAY floating wind system to collect data to validate a FAST model of the SWAY design in an open-water condition. Nanyang Technological University (NTU), through a collaboration with NREL, assisted in this validation.

Koh, J. H.; Robertson, A.; Jonkman, J.; Driscoll, F.; Ng, E. Y. K.

2013-09-01T23:59:59.000Z

495

Wind turbine  

SciTech Connect (OSTI)

The improvement in a wind turbine comprises providing a tower with a freely liftable mount and adapting a nacelle which is fitted with a propeller windwheel consisting of a plurality of rotor blades and provided therein with means for conversion of wind energy to be shifted onto said mount attached to the tower. In case of a violent wind storm, the nacelle can be lowered down to the ground to protect the rotor blades from breakage due to the force of the wind. Required maintenance and inspection of the nacelle and replacement of rotor blades can be safely carried out on the ground.

Abe, M.

1982-01-19T23:59:59.000Z

496

ROOT LOCUS TECHNIQUE 323 7.6.1 Hydro Power Plant Experiment  

E-Print Network [OSTI]

ROOT LOCUS TECHNIQUE 323 7.6.1 Hydro Power Plant Experiment The design of a static controller for a real hydro power plant is considered in Skatariâ?? c and Gajiâ?? c (1992). The hydro power plant is treated variables of this hydro power plant are represented by x T = [1` 1! 1u f 1/ d 1/ q 1/ f 1/D 1/Q ] where 1

Gajic, Zoran

497

Assessing Desert Tortoise Survival and Reproduction at a Wind Energy  

E-Print Network [OSTI]

Assessing Desert Tortoise Survival and Reproduction at a Wind Energy Facility Near Palm Springs of their habitat are characterized by significant wind and solar energy potential. As a result, the species in the Mojave and Sonoran Deserts have preexisting wind energy facilities dating back over 25 years. One

498

Volume reduction/solidification of liquid radioactive waste using bitumen at Ontario Hydro`s Bruce Nuclear Generating Station `A`  

SciTech Connect (OSTI)

Ontario Hydro at the Bruce Nuclear Generating Station `A` has undertaken a program to render the station`s liquid radioactive waste suitable for discharge to Lake Huron by removing sufficient radiological and chemical contaminants to satisfy regulatory requirements for emissions. The system will remove radionuclide and chemical contaminants from five different plant waste streams. The contaminants will be immobilized and stored at on-site radioactive waste storage facilities and the purified streams will be discharged. The discharge targets established by Ontario Hydro are set well below the limits established by the Ontario Ministry of Environment (MOE) and are based on the Best Available Technology Economically Achievable Approach (B.A.T.E.A.). ADTECHS Corporation has been selected by Ontario Hydro to provide volume reduction/solidification technology for one of the five waste streams. The system will dry and immobilize the contaminants from a liquid waste stream in emulsified asphalt using thin film evaporation technology.

Day, J.E.; Baker, R.L.

1995-05-01T23:59:59.000Z

499

Comparison of Triton SODAR Data to Meteorological Tower Wind Measurement Data in Hebei Province, China  

SciTech Connect (OSTI)

With the increased interest in remote sensing of wind information in recent years, it is important to determine the reliability and accuracy of new wind measurement technologies if they are to replace or supplement conventional tower-based measurements. In view of this, HydroChina Corporation and the United States National Renewable Energy Laboratory (NREL) conducted a comparative test near a wind farm in Hebei Province, China. We present the results of an analysis characterizing the measurement performance of a state-of-the-art Sound Detection and Ranging (sodar) device when compared to a traditional tower measurement program. NREL performed the initial analysis of a three-month period and sent the results to HydroChina. When another month of data became available, HydroChina and their consultant Beijing Millenium Engineering Software (MLN) repeated NREL's analysis on the complete data set, also adding sensitivity analysis for temperature, humidity, and wind speed (Section 6). This report presents the results of HydroChina's final analysis of the four-month period.

Yuechun, Y.; Jixue, W.; Hongfang, W.; Guimin, L.; Bolin, Y.; Scott, G.; Elliott, D.; Kline, D.

2012-01-01T23:59:59.000Z

500

To: NW Hydro Association From: Dick Wanderscheid, Angus Duncan and Todd Reeve  

E-Print Network [OSTI]

Memo To: NW Hydro Association From: Dick Wanderscheid, Angus Duncan and Todd Reeve Re: The Bonneville Environmental Foundation's comments on the draft hydro potential study BEF staff completed to address the larger, conceptual picture of the hydro potential in the region. In particular, we attempted