Sample records for usa solar fields

  1. Solar Unlimited USA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistmaSinosteelSolar Energy sro JumpProjectsSolarSolarSolar

  2. 2008 European PV Conference, Valencia, Spain COMPARISON OF SOLAR RADIATION FORECASTS FOR THE USA

    E-Print Network [OSTI]

    Perez, Richard R.

    2008 European PV Conference, Valencia, Spain COMPARISON OF SOLAR RADIATION FORECASTS FOR THE USA J models 1 INTRODUCTION Solar radiation and PV production forecasts are becoming increasingly important/) three teams of experts are benchmarking their solar radiation forecast against ground truth data

  3. Solar magnetic fields and terrestrial climate

    E-Print Network [OSTI]

    Georgieva, Katya; Kirov, Boian

    2014-01-01T23:59:59.000Z

    Solar irradiance is considered one of the main natural factors affecting terrestrial climate, and its variations are included in most numerical models estimating the effects of natural versus anthropogenic factors for climate change. Solar wind causing geomagnetic disturbances is another solar activity agent whose role in climate change is not yet fully estimated but is a subject of intense research. For the purposes of climate modeling, it is essential to evaluate both the past and the future variations of solar irradiance and geomagnetic activity which are ultimately due to the variations of solar magnetic fields. Direct measurements of solar magnetic fields are available for a limited period, but can be reconstructed from geomagnetic activity records. Here we present a reconstruction of total solar irradiance based on geomagnetic data, and a forecast of the future irradiance and geomagnetic activity relevant for the expected climate change.

  4. Adaptive Receding Horizon Control of a Distributed Collector Solar Field

    E-Print Network [OSTI]

    Sontag, Eduardo

    for a distributed collector solar field which ex- plicitly explores its distributed parameter character. The plant, distributed collector solar fields are repre- sentative of an important class of distributed parameter plantsAdaptive Receding Horizon Control of a Distributed Collector Solar Field J.M. Igreja, J. M. Lemos

  5. S. Guha, J. Yang, A. Banerjee, K. Hoffman, S. Sugiyama, and J. Call United Solar Systems Corp., Troy, Michigan 48084 USA

    E-Print Network [OSTI]

    Deng, Xunming

    ., Troy, Michigan 48084 USA S. J. Jones, X. Deng, J. Doehler, M. lzu, and H. 6. Ovshinsky Energy Conversion Devices, Inc., Troy, Michigan 48084 USA spectral-splitting, triple-junction a-S alloy solar cell

  6. Solar Cells, 3 (1981) 337 -340 337 HIGH EFFICIENCY BIFACIAL BACK SURFACE FIELD SOLAR CELLS

    E-Print Network [OSTI]

    del Alamo, Jesús A.

    . CUEVAS, A. LUQUE, J. EGUREN and J. DEL ALAMO Instituto de Energia Solar, Escuela Tdcnica Superior deSolar Cells, 3 (1981) 337 - 340 337 HIGH EFFICIENCY BIFACIAL BACK SURFACE FIELD SOLAR CELLS A solar cells are presented. Effi- ciencies of 15.7% and 13.6% were measured under front and back air mass

  7. Calyxo USA Solar Fields LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:Power LPInformation 8thCalwind II CEC Wind Farm Jump

  8. Solar World USA not SolarWorld AG | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk, NewSingapore Jump to:Voltaic Malaysia Sdn Bhd JumpSolar World

  9. Investigation of plasma velocity field solar flare footpoints

    E-Print Network [OSTI]

    Mrozek, Tomasz

    of Wroclaw NCN Grant 2011/01/M/ST9/06096 #12;The Solar Flare - observations #12;chromosphere corona photosphere The Solar Flare - cartoon - conversion of magnetic energy into other forms - transport of energyInvestigation of plasma velocity field in solar flare footpoints from RHESSI observations T. Mrozek

  10. New dynamo pattern revealed by solar helical magnetic fields

    E-Print Network [OSTI]

    Zhang, Hongqi; Pevtsov, A; Gao, Yu; Xu, Haiqing; Sokoloff, D D; Kuzanyan, K

    2009-01-01T23:59:59.000Z

    Previously unobservable mirror asymmetry of the solar magnetic field -- a key ingredient of the dynamo mechanism which is believed to drive the 11-year activity cycle -- has now been measured. This was achieved through systematic monitoring of solar active regions carried out for more than 20 years at observatories in Mees, Huairou, and Mitaka. In this paper we report on detailed analysis of vector magnetic field data, obtained at Huairou Solar Observing Station in China. Electric current helicity (the product of current and magnetic field component in the same direction) was estimated from the data and a latitude-time plot of solar helicity during the last two solar cycles has been produced. We find that like sunspots helicity patterns propagate equatorwards but unlike sunspot polarity helicity in each solar hemisphere does not change sign from cycle to cycle - confirming the theory. There are, however, two significant time-latitudinal domains in each cycle when the sign does briefly invert. Our findings she...

  11. Cyclic behavior of solar inter-network magnetic field

    E-Print Network [OSTI]

    Jin, Chunlan

    2015-01-01T23:59:59.000Z

    Solar inter-network magnetic field is the weakest component of solar magnetism, but contributes most of the solar surface magnetic flux. The study on its origin has been constrained by the inadequate tempo-spatial resolution and sensitivity of polarization observations. With dramatic advances in spatial resolution and detective sensitivity, solar spectro-polarimetry provided by the Solar Optical Telescope aboard Hinode in an interval from solar minimum to maximum of cycle 24 opens an unprecedented opportunity to study the cyclic behavior of solar inter-network magnetic field. More than 1000 Hinode magnetograms observed from 2007 January to 2014 August are selected in the study. It has been found that there is a very slight correlation between sunspot number and magnetic field at the inter-network flux spectrum. From solar minimum to maximum of cycle 24, the flux density of solar inter-network field is invariant, which is 10$\\pm1$ G. The observations suggest that the inter-network magnetic field does not arise...

  12. 1 Magnetic Fields and Solar This article describesthe relationshipbetweenmagnetic

    E-Print Network [OSTI]

    reconnection. The free magnetic energy is con- verted to thermal and non- thermal energy to power solar ares, which create thermal emissions and accel- eration of non-thermal particles. The total energy1 Magnetic Fields and Solar Flares This article describesthe relationshipbetweenmagnetic elds

  13. 1 CONFIDENTIAL1 CONFIDENTIAL GreenField Solar

    E-Print Network [OSTI]

    Rollins, Andrew M.

    1 CONFIDENTIAL1 CONFIDENTIAL GreenField Solar: Testing and Reliability needs of CPV Systems Dr-south movements only required once a day West East #12;CONFIDENTIAL 7 Industry-wide issues - Solar Issues from ­ Encapsulation failures ­ Inverter reliability Solder fatigue Encapsulant browning Junction box failures

  14. A Solar Re-Skin at FedEx Field | Department of Energy

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

    A Solar Re-Skin at FedEx Field A Solar Re-Skin at FedEx Field August 2, 2011 - 10:40am Addthis Ramamoorthy Ramesh Former Director, SunShot Initiative & Solar Energy Technologies...

  15. Lense-Thirring Field and the Solar Limb Effect

    E-Print Network [OSTI]

    M. I. Wanas; A. B. Morcos; S. I. El Gammal

    2010-08-05T23:59:59.000Z

    Solar-Limb Effect is an observational phenomena connected to the solar gravitational red-shift. It shows a variation of the magnitude of the gravitational red-shift from the center to the limb of the solar disc. In the present work an attempt, for interpreting this phenomena using a general relativistic red-shift formula, is given . This formula takes into account the effect of the the Sun's gravitational field, the effect of the solar rotation, the effect of inclination of the line of sight and the motion of the observer. In this study the gravitational field of the Sun is assumed to be given by Lense-Thirring field instead of the Schwarzschild one. The Earth is assumed to move along an elliptic orbit. Comparison with a previous relativistic study and with observation is given.

  16. Relation between photospheric flow fields and the magnetic field distribution on the solar surface

    SciTech Connect (OSTI)

    Simon, G.W.; Title, A.M.; Topka, K.P.; Tarbell, T.D.; Shine, R.A.

    1988-04-01T23:59:59.000Z

    Using the technique of local correlation tracking on a 28 minute time sequence of white-light images of solar granulation, the horizontal flow field on the solar surface is measured. The time series was obtained by the Solar Optical Universal Polarimeter (SOUP) on Spacelab 2 (Space Shuttle flight 51-F) and is free from atmospheric blurring and distortion. The SOUP flow fields have been compared with carefully aligned magnetograms taken over a nine hour period at the Big Bear Solar Observatory before, during, and after the SOUP images. The flow field and the magnetic field agree in considerable detail: vectors which define the flow of the white-light intensity pattern (granulation) point toward magnetic field regions, magnetic fields surround flow cells, and magnetic features move along the flow arrows. The projected locations of free particles (corks) in the measured flow field congregate at the same locations where the magnetic field is observed. 31 references.

  17. Periodicity of the solar full-disk magnetic fields

    SciTech Connect (OSTI)

    Xiang, N. B.; Qu, Z. N.; Zhai, Q. [National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011 (China)

    2014-07-01T23:59:59.000Z

    A full-disk solar magnetogram has been measured each day since 1970 January 19, and the daily Magnetic Plage Strength Index (MPSI) and the daily Mount Wilson Sunspot Index (MWSI) were calculated for each magnetogram at the Mount Wilson Observatory. The MPSI and MWSI are used to investigate the periodicity of the solar full-disk magnetic activity through autocorrelation analyses. Just two periods, the solar cycle and the rotation cycle, are determined in both the MPSI (the solar full-disk weak magnetic field activity) and MWSI (the solar full-disk strong magnetic field activity) with no annual signal found. The solar cycle for MPSI (10.83 yr) is found to be obviously longer than that for MWSI (9.77 yr). The rotation cycle is determined to be 26.8 0.63 sidereal days for MPSI and 27.4 2.4 sidereal days for MWSI. The rotation cycle length for MPSI is found to fluctuate around 27 days within a very small amplitude, but for MWSI it obviously temporally varies with a rather large amplitude. The rotation cycle for MWSI seems longer near solar minimum than at solar maximum. Cross-correlation analyses of daily MPSI and MWSI are carried out, and it is inferred that the MPSI components partly come from relatively early MWSI measurements.

  18. Relationship Between Solar Wind Speed and Coronal Magnetic Field Properties

    E-Print Network [OSTI]

    Fujiki, Ken'ichi; Iju, Tomoya; Hakamada, Kazuyuki; Kojima, Masayoshi

    2015-01-01T23:59:59.000Z

    We have studied the relationship between the solar-wind speed $[V]$ and the coronal magnetic-field properties (a flux expansion factor [$f$] and photospheric magnetic-field strength [$B_{\\mathrm{S}}$]) at all latitudes using data of interplanetary scintillation and solar magnetic field obtained for 24 years from 1986 to 2009. Using a cross-correlation analyses, we verified that $V$ is inversely proportional to $f$ and found that $V$ tends to increase with $B_{\\mathrm{S}}$ if $f$ is the same. As a consequence, we find that $V$ has extremely good linear correlation with $B_{\\mathrm{S}}/f$. However, this linear relation of $V$ and $B_{\\mathrm{S}}/f$ cannot be used for predicting the solar-wind velocity without information on the solar-wind mass flux. We discuss why the inverse relation between $V$ and $f$ has been successfully used for solar-wind velocity prediction, even though it does not explicitly include the mass flux and magnetic-field strength, which are important physical parameters for solar-wind accele...

  19. Advances in modeling gradual solar energetic particle events q Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins Road, Laurel, MD 20723, USA

    E-Print Network [OSTI]

    Sanahuja, Blai

    Advances in modeling gradual solar energetic particle events q D. Lario * Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins Road, Laurel, MD 20723, USA Received 19 October 2002; accepted 8 July 2005 Abstract Solar energetic particles pose one of the most serious hazards

  20. SOLAR MAGNETIC FIELD SIGNATURES IN HELIOSEISMIC SPLITTING COEFFICIENTS

    SciTech Connect (OSTI)

    Baldner, Charles S.; Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT, 06520-8101 (United States); Antia, H. M. [Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005 (India); Larson, Timothy P., E-mail: charles.baldner@yale.ed [Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305-4085 (United States)

    2009-11-10T23:59:59.000Z

    Normal modes of oscillation of the Sun are useful probes of the solar interior. In this work, we use the even-order splitting coefficients to study the evolution of magnetic fields in the convection zone over solar cycle 23, assuming that the frequency splitting is only due to rotation and a large-scale magnetic field. We find that the data are best fit by a combination of a poloidal field and a double-peaked near-surface toroidal field. The toroidal fields are centered at r {sub 0} = 0.999 R {sub sun} and r = 0.996 R {sub sun} and are confined to the near-surface layers. The poloidal field is a dipole field. The peak strength of the poloidal field is 124 +- 17 G. The toroidal field peaks at 380 +- 30 G and 1.4 +- 0.2 kG for the shallower and deeper fields, respectively. The field strengths are highly correlated with surface activity. The toroidal field strength shows a hysteresis-like effect when compared to the global 10.7 cm radio flux. The poloidal field strength shows evidence of saturation at high activity.

  1. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    are many solar photovoltaic power plants internationally andUSA, Blythe, CA Solar electric power plant, Blythe USA, SanTX Blue Wing solar electric power plant USA, Jacksonville,

  2. Magnetic field gradients in solar wind plasma and geophysics periods

    E-Print Network [OSTI]

    A. Bershadskii

    2006-11-16T23:59:59.000Z

    Using recent data obtained by Advanced Composition Explorer (ACE) the pumping scale of the magnetic field gradients of the solar wind plasma has been calculated. This pumping scale is found to be equal to 24h $\\pm$ 2h. The ACE spacecraft orbits at the L1 libration point which is a point of Earth-Sun gravitational equilibrium about 1.5 million km from Earth. Since the Earth's magnetosphere extends into the vacuum of space from approximately 80 to 60,000 kilometers on the side toward the Sun the pumping scale cannot be a consequence of the 24h-period of the Earth's rotation. Vise versa, a speculation is suggested that for the very long time of the coexistence of Earth and of the solar wind the weak interaction between the solar wind and Earth could lead to stochastic synchronization between the Earth's rotation and the pumping scale of the solar wind magnetic field gradients. This synchronization could transform an original period of the Earth's rotation to the period close to the pumping scale of the solar wind magnetic field gradients.

  3. 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

  4. Height variation of the vector magnetic field in solar spicules

    E-Print Network [OSTI]

    Suarez, D Orozco; Bueno, J Trujillo

    2015-01-01T23:59:59.000Z

    Proving the magnetic configuration of solar spicules has hitherto been difficult due to the lack of spatial resolution and image stability during off-limb ground-based observations. We report spectropolarimetric observations of spicules taken in the He I 1083 nm spectral region with the Tenerife Infrared Polarimeter II at the German Vacuum Tower Telescope of the Observatorio del Teide (Tenerife; Canary Islands; Spain). The data provide the variation with geometrical height of the Stokes I, Q, U, and V profiles whose encoded information allows the determination of the magnetic field vector by means of the HAZEL inversion code. The inferred results show that the average magnetic field strength at the base of solar spicules is about 80 gauss and then it decreases rapidly with height to about 30 gauss at a height of 3000 km above the visible solar surface. Moreover, the magnetic field vector is close to vertical at the base of the chromosphere and has mid inclinations (about 50 degree) above 2 Mm height.

  5. NREL scientists develop near-field optical microscopy techniques for imaging solar cell junctions and identify

    E-Print Network [OSTI]

    Solar cell producers are facing urgent pressures to lower module production cost.This achievementNREL scientists develop near-field optical microscopy techniques for imaging solar cell junctions is an increasingly important issue for silicon solar cells. The issue has taken center stage now that the solar

  6. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    USA, Jacksonville, FL Jacksonville Solar Energy Generation Facility Constructed Systems that produce electricity

  7. Solar Energy Applications Page 1 Rev. September 23, 2009 Field Office Serial

    E-Print Network [OSTI]

    Laughlin, Robert B.

    Solar Energy Applications Page 1 Rev. September 23, 2009 Field Office Serial Number Project Name) Located in Maricopa Co., north of Mobile AZ. Pending 9. AZA 034187 Sonoran Solar Energy Project Boulevard Co. South of Gila Bend Pending #12;Solar Energy Applications Page 2 Rev. September 23, 2009 Field

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

    E-Print Network [OSTI]

    Russell, Christopher T.

    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

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

    E-Print Network [OSTI]

    Higuchi, Tomoyuki

    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

  10. Transient horizontal magnetic fields in solar plage regions

    E-Print Network [OSTI]

    R. Ishikawa; S. Tsuneta; K. Ichimoto; H. Isobe; Y. Katsukawa; B. W. Lites; S. Nagata; T. Shimizu; R. A. Shine; Y. Suematsu; T. D. Tarbell; A. M. Title

    2008-02-13T23:59:59.000Z

    We report the discovery of isolated, small-scale emerging magnetic fields in a plage region with the Solar Optical Telescope aboard Hinode. Spectro-polarimetric observations were carried out with a cadence of 34 seconds for the plage region located near disc center. The vector magnetic fields are inferred by Milne-Eddington inversion. The observations reveal widespread occurrence of transient, spatially isolated horizontal magnetic fields. The lateral extent of the horizontal magnetic fields is comparable to the size of photospheric granules. These horizontal magnetic fields seem to be tossed about by upflows and downflows of the granular convection. We also report an event that appears to be driven by the magnetic buoyancy instability. We refer to buoyancy-driven emergence as type1 and convection-driven emergence as type2. Although both events have magnetic field strengths of about 600 G, the filling factor of type1 is a factor of two larger than that of type2. Our finding suggests that the granular convection in the plage regions is characterized by a high rate of occurrence of granular-sized transient horizontal fields.

  11. Zero-Field Dichroism in the Solar Chromosphere

    E-Print Network [OSTI]

    R. Manso Sainz; J. Trujillo Bueno

    2003-11-19T23:59:59.000Z

    We explain the linear polarization of the Ca II infrared triplet observed close to the edge of the solar disk. In particular, we demonstrate that the physical origin of the enigmatic polarizations of the 866.2 nm and 854.2 nm lines lies in the existence of atomic polarization in their metastable lower levels, which produces differential absorption of polarization components (dichroism). To this end, we have solved the problem of the generation and transfer of polarized radiation by taking fully into account all the relevant optical pumping mechanisms in multilevel atomic models. We argue that `zero-field' dichroism may be of great diagnostic value in astrophysics.

  12. Characterization of the solar light field within the ocean mesopelagic zone based on radiative transfer simulations

    E-Print Network [OSTI]

    Stramski, Dariusz

    Characterization of the solar light field within the ocean mesopelagic zone based on radiative light field Apparent optical properties Mesopelagic zone Radiative transfer modeling a b s t r a c t The solar light field within the ocean from the sea surface to the bottom of the mesopelagic zone

  13. DEMONSTRATION OF ENERGY STORAGE INTEGRATED WITH A SOLAR DISH FIELD IN WHYALLA

    E-Print Network [OSTI]

    energy storage into the thermal cycle is a key point of differentiation between solar thermalDEMONSTRATION OF ENERGY STORAGE INTEGRATED WITH A SOLAR DISH FIELD IN WHYALLA Joe Coventry 1-of-a-kind demonstration of an integrated solar dish and molten- salt storage system, using the superheated steam energy

  14. SOLARCAP: Super Capacitor Buffering of Solar Energy for Self-Sustainable Field Systems

    E-Print Network [OSTI]

    Shen, Kai

    buffering, a system that we call SOLARCAP. Using solar panels paired with super-capacitors presents uniqueSOLARCAP: Super Capacitor Buffering of Solar Energy for Self-Sustainable Field Systems Amal Fahad of the conventional battery-based energy storage, this paper argues that the super capacitor buffering of solar energy

  15. Particle acceleration and radiation by direct electric fields in flaring complex solar active regions

    E-Print Network [OSTI]

    Anastasiadis, Anastasios

    Particle acceleration and radiation by direct electric fields in flaring complex solar active-Meudon, 92195 Meudon Cedex, FRANCE Abstract The acceleration and radiation of solar energetic particles with the existing observations. 1 Introduction The approach used for particle acceleration models proposed for solar

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

    E-Print Network [OSTI]

    Zhao, Xuepu

    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

  17. Light deflection and time delay in the solar gravitational field

    SciTech Connect (OSTI)

    Richter, G.W.

    1983-01-01T23:59:59.000Z

    The second nonvanishing order of contribution to light deflection and time delay in the solar gravitational field is studied for a realistic solar model and for a wide range of metric theories of gravity. It is shown that the second-order effects arise at order (GM/c/sup 2/R)/sup 2/ identical to epsilon/sup 4/. To calculate these effects, every component of the solar metric must be known to order epsilon/sup 4/. The parametrized post-Newtonian (PPN) metric provides most of those components. However, some extension of the PPN metric is required. This extension leads to the parametrized post-linear (PPL) metric, which is used in all calculations. To study light deflection to order epsilon/sup 4/ requires that the orbits of scattered photons be known to that order. These orbits are solved for, first in the equatorial plane and then in general, and are used to determine the deflection as measured by an observer at rest with respect to the sun. In the equatorial plane there is only a radial component to this deflection. In general, there is another component orthogonal to the radial plane, but knowledge of this component is not necessary to determine the total deflection to order epsilon/sup 4/. The total second-order deflection can be as large as 300..mu.. arcsec (for deflection by Jupiter). Measurements of some second-order terms are within the astrometric capabilities of experiments proposed for the 1990's. The time delay in the round-trip travel time of a radar beam reflected from a planet is due to the variable coordinate speed of the light signal and to the bending of the beam path. The delay is calculated to order epsilon/sup 4/. It is shown that the beam-bending gives a second-order contribution as large as the present-day uncertainties in time delay experiments with the Viking spacecraft.

  18. Beryllium anomalies in solar-type field stars

    E-Print Network [OSTI]

    N. C. Santos; G. Israelian; S. Randich; R. J. Garcia Lopez; R. Rebolo

    2004-08-05T23:59:59.000Z

    We present a study of beryllium (Be) abundances in a large sample of field solar-type dwarfs and sub-giants spanning a large range of effective temperatures. The analysis shows that Be is severely depleted for F stars, as expected by the light-element depletion models. However, we also show that Beryllium abundances decrease with decreasing temperature for stars cooler than $\\sim$6000 K, a result that cannot be explained by current theoretical models including rotational mixing, but that is, at least in part, expected from the models that take into account internal wave physics. In particular, the light element abundances of the coolest and youngest stars in our sample suggest that Be, as well as lithium (Li), has already been burned early during their evolution. Furthermore, we find strong evidence for the existence of a Be-gap for solar-temperature stars. The analysis of Li and Be abundances in the sub-giants of our sample also shows the presence of one case that has still detectable amounts of Li, while Be is severely depleted. Finally, we compare the derived Be abundances with Li abundances derived using the same set of stellar parameters. This gives us the possibility to explore the temperatures for which the onset of Li and Be depletion occurs.

  19. Modeling impacts of geomagnetic field variations on middle atmospheric ozone responses to solar proton

    E-Print Network [OSTI]

    Wehrli, Bernhard

    events (SPEs) the flux of high-energy protons from the Sun is markedly increased. In order to investigateModeling impacts of geomagnetic field variations on middle atmospheric ozone responses to solar charged particles of solar and cosmic origin. Therefore variations of the geomagnetic field occurring

  20. Toward magnetic field dissipation during the 23 July 2002 solar flare measured with Solar

    E-Print Network [OSTI]

    Zharkova, Valentina V.

    and Heliospheric Observatory/Michelson Doppler Imager (SOHO/MDI) and Reuven Ramaty High Energy Solar Spectroscopic and Heliospheric Observatory/Michelson Doppler Imager (SOHO/MDI) and Reuven Ramaty High Energy Solar Spectroscopic] It is widely accepted that the source of primary energy release in solar flares is associated with magnetic

  1. Published in Conference Proceedings of THE AMERICAN SOLAR ENERGY SOCIETY (ASES) MADISON, WISCONSIN, USA, JUNE 16-21, 2000

    E-Print Network [OSTI]

    Jacobson, Arne

    Published in Conference Proceedings of THE AMERICAN SOLAR ENERGY SOCIETY (ASES) MADISON, WISCONSIN take 15 to 25 seconds each, #12;Published in Conference Proceedings of THE AMERICAN SOLAR ENERGY

  2. SEP Success Story: Solar Field Powers Historic Garden Holiday...

    Energy Savers [EERE]

    agencies and the University of Tennessee at the official opening of the West Tennessee Solar Farm. | Energy Department photo. SEP Success Story: Harvesting the Sun at the West...

  3. Multi-objective optimization of solar tower heliostat fields

    E-Print Network [OSTI]

    brahm, Erika

    the heat. Usually, the heat of the fluid is exchanged into steam which powers a turbine to generate Introduction Solar tower plants generate electric power from sunlight by focusing concentrated solar radiation. Designing commercial power plants aims always at finding the most economic plant design under a given set

  4. SOLAR MAGNETIC ACTIVITY CYCLES, CORONAL POTENTIAL FIELD MODELS AND ERUPTION RATES

    SciTech Connect (OSTI)

    Petrie, G. J. D. [National Solar Observatory, Tucson, AZ 85719 (United States)

    2013-05-10T23:59:59.000Z

    We study the evolution of the observed photospheric magnetic field and the modeled global coronal magnetic field during the past 3 1/2 solar activity cycles observed since the mid-1970s. We use synoptic magnetograms and extrapolated potential-field models based on longitudinal full-disk photospheric magnetograms from the National Solar Observatory's three magnetographs at Kitt Peak, the Synoptic Optical Long-term Investigations of the Sun vector spectro-magnetograph, the spectro-magnetograph and the 512-channel magnetograph instruments, and from Stanford University's Wilcox Solar Observatory. The associated multipole field components are used to study the dominant length scales and symmetries of the coronal field. Polar field changes are found to be well correlated with active fields over most of the period studied, except between 2003 and 2006 when the active fields did not produce significant polar field changes. Of the axisymmetric multipoles, only the dipole and octupole follow the poles whereas the higher orders follow the activity cycle. All non-axisymmetric multipole strengths are well correlated with the activity cycle. The tilt of the solar dipole is therefore almost entirely due to active-region fields. The axial dipole and octupole are the largest contributors to the global field except while the polar fields are reversing. This influence of the polar fields extends to modulating eruption rates. According to the Computer Aided CME Tracking, Solar Eruptive Event Detection System, and Nobeyama radioheliograph prominence eruption catalogs, the rate of solar eruptions is found to be systematically higher for active years between 2003 and 2012 than for those between 1997 and 2002. This behavior appears to be connected with the weakness of the late-cycle 23 polar fields as suggested by Luhmann. We see evidence that the process of cycle 24 field reversal is well advanced at both poles.

  5. Observational Evidence of Changing Photospheric Vector Magnetic Fields Associated with Solar Flares

    E-Print Network [OSTI]

    of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China 3. Key Laboratory of Solar ActivityObservational Evidence of Changing Photospheric Vector Magnetic Fields Associated with Solar Flares University, Beijing 100875, China sjt@bao.ac.cn Received ; accepted Not to appear in Nonlearned J., 45. #12

  6. Modeling of a Parabolic Trough Solar Field for Acceptance Testing: A Case Study

    SciTech Connect (OSTI)

    Wagner, M. J.; Mehos, M. S.; Kearney, D. W.; McMahan, A. C.

    2011-01-01T23:59:59.000Z

    As deployment of parabolic trough concentrating solar power (CSP) systems ramps up, the need for reliable and robust performance acceptance test guidelines for the solar field is also amplified. Project owners and/or EPC contractors often require extensive solar field performance testing as part of the plant commissioning process in order to ensure that actual solar field performance satisfies both technical specifications and performance guaranties between the involved parties. Performance test code work is currently underway at the National Renewable Energy Laboratory (NREL) in collaboration with the SolarPACES Task-I activity, and within the ASME PTC-52 committee. One important aspect of acceptance testing is the selection of a robust technology performance model. NREL1 has developed a detailed parabolic trough performance model within the SAM software tool. This model is capable of predicting solar field, sub-system, and component performance. It has further been modified for this work to support calculation at subhourly time steps. This paper presents the methodology and results of a case study comparing actual performance data for a parabolic trough solar field to the predicted results using the modified SAM trough model. Due to data limitations, the methodology is applied to a single collector loop, though it applies to larger subfields and entire solar fields. Special consideration is provided for the model formulation, improvements to the model formulation based on comparison with the collected data, and uncertainty associated with the measured data. Additionally, this paper identifies modeling considerations that are of particular importance in the solar field acceptance testing process and uses the model to provide preliminary recommendations regarding acceptable steady-state testing conditions at the single-loop level.

  7. Large-scale solar cycle features of solar photospheric magnetic field

    E-Print Network [OSTI]

    W. B. Song

    2007-05-14T23:59:59.000Z

    It is well accepted that the solar cycle originates from a magnetohydrodynamics dynamo deep inside the Sun. Many dynamo models have long been proposed based on a lot of observational constraints. In this paper, using 342 NSO/Kitt Peak solar synoptic charts we study the solar cycle phases in different solar latitudinal zones to set further constraints. Our results can be summarized as follows. (1) The variability of solar polar regions' area has a correlation with total unsigned magnetic flux in advance of 5 years. (2) The high-latitude region mainly appears unipolar in the whole solar cycle and its flux peak time lags sunspot cycle for 3 years. (3) For the activity belt, it is not surprised that its phase be the same as sunspot's. (4) The flux peak time of the low-latitude region shifts forward with an average gradient of 32.2 $day/deg$. These typical characteristics may provide some hints for constructing an actual solar dynamo.

  8. Does the variation of solar inter-network horizontal field follow sunspot cycle?

    E-Print Network [OSTI]

    Jin, Chunlan

    2015-01-01T23:59:59.000Z

    The ubiquitousness of solar inter-network horizontal magnetic field has been revealed by the space-borne observations with high spatial resolution and polarization sensitivity. However, no consensus has been achieved on the origin of the horizontal field among solar physicists. For a better understanding, in this study we analyze the cyclic variation of inter-network horizontal field by using the spectro-polarimeter observations provided by Solar Optical Telescope on board Hinode, covering the interval from 2008 April to 2015 February. The method of wavelength integration is adopted to achieve a high signal-to-noise ratio. It is found that from 2008 to 2015 the inter-network horizontal field does not vary when solar activity increases, and the average flux density of inter-network horizontal field is 87$\\pm$1 G, In addition, the imbalance between horizontal and vertical field also keeps invariant within the scope of deviation, i.e., 8.7$\\pm$0.5, from the solar minimum to maximum of solar cycle 24. This result...

  9. A Twenty Year Decline in Solar Photospheric Magnetic Fields: Inner-Heliospheric Signatures and Possible Implications?

    E-Print Network [OSTI]

    Janardhan, P; Ananthakrishnan, S; Tokumaru, M; Fujiki, K; Jose, L; Sridharan, R

    2015-01-01T23:59:59.000Z

    We report observations of a steady 20 year decline of solar photospheric fields at latitudes $\\geq$45${^{o}}$ starting from $\\sim$1995. This prolonged and continuing decline, combined with the fact that Cycle 24 is already past its peak, implies that magnetic fields are likely to continue to decline until $\\sim$2020, the expected minimum of the ongoing solar Cycle 24. In addition, interplanetary scintillation (IPS) observations of the inner heliosphere for the period 1983--2013 and in the distance range 0.2--0.8 AU, have also shown a similar and steady decline in solar wind micro-turbulence levels, in sync with the declining photospheric fields. Using the correlation between the polar field and heliospheric magnetic field (HMF) at solar minimum, we have estimated the value of the HMF in 2020 to be 3.9 ($\\pm$0.6) and a floor value of the HMF of $\\sim$3.2 ($\\pm$0.4) nT. Given this floor value for the HMF, our analysis suggests that the estimated peak sunspot number for solar Cycle 25 is likely to be $\\sim$ 62 (...

  10. Solar Field Powers Historic Garden Holiday Display | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCO OverviewRepositoryManagement |Solar Energy Development in

  11. Sinocome Solar aka Perfect Field Investment | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistma AGShandongShirkeSichuanSiliconSimplySinocome Solar aka

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

    E-Print Network [OSTI]

    California at Berkeley, University of

    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

  13. Tracking Solar Energy Conersion Unit Adapted For Field Assembly

    DOE Patents [OSTI]

    Kaminar, Neil R. (Boulder Creek, CA); Ross, III, James G. (Bothell, WA); Carrie, Peter J. (Toronto, CA)

    2000-02-01T23:59:59.000Z

    A modular solar energy collector having elongated V-shaped side walls formed by a pair of coplanar panels for each side wall. The upper panels, occupying most of the wall area are diffusely reflective, but the lower panels are specularly reflective. A Fresnel lens, having a snap fit relation to the side walls focuses some light on the lower specularly reflective panels which direct light to the solar cells at the base of the V-shaped walls. A heat sink provides support for the two panels with two opposed, upwardly extending wings terminating in opposed linear clips located near the lengthwise seam of the coplanar panels, each clip holding two coplanar panels in parallel alignment. The clips not only provide support for the panels, but also transfer heat to the remainder of the heat sink. The clips are shaped so that edges of the panels engage each clip by a snap fit, outside of the clip in one embodiment and inside of the clip in another embodiment. End caps are also formed with structures which snap to the wall panels. Since all junctions of components snap together, the collector of the present invention is easily assembled without specialized tools. Using side walls which are only partly specularly reflective permits a large angle of acceptance, yet provides an economical wall design because the entire wall need not be specularly reflective.

  14. Nonlinear force-free modeling of the solar coronal magnetic field

    E-Print Network [OSTI]

    T. Wiegelmann

    2008-01-18T23:59:59.000Z

    The coronal magnetic field is an important quantity because the magnetic field dominates the structure of the solar corona. Unfortunately direct measurements of coronal magnetic fields are usually not available. The photospheric magnetic field is measured routinely with vector magnetographs. These photospheric measurements are extrapolated into the solar corona. The extrapolated coronal magnetic field depends on assumptions regarding the coronal plasma, e.g. force-freeness. Force-free means that all non-magnetic forces like pressure gradients and gravity are neglected. This approach is well justified in the solar corona due to the low plasma beta. One has to take care, however, about ambiguities, noise and non-magnetic forces in the photosphere, where the magnetic field vector is measured. Here we review different numerical methods for a nonlinear force-free coronal magnetic field extrapolation: Grad-Rubin codes, upward integration method, MHD-relaxation, optimization and the boundary element approach. We briefly discuss the main features of the different methods and concentrate mainly on recently developed new codes.

  15. The crucial role of surface magnetic fields for the solar dynamo

    E-Print Network [OSTI]

    Cameron, Robert

    2015-01-01T23:59:59.000Z

    Sunspots and the plethora of other phenomena occuring in the course of the 11-year cycle of solar activity are a consequence of the emergence of magnetic flux at the solar surface. The observed orientations of bipolar sunspot groups imply that they originate from toroidal (azimuthally orientated) magnetic flux in the convective envelope of the Sun. We show that the net toroidal magnetic flux generated by differential rotation within a hemisphere of the convection zone is determined by the emerged magnetic flux at the solar surface and thus can be calculated from the observed magnetic field distribution. The main source of the toroidal flux is the roughly dipolar surface magnetic field at the polar caps, which peaks around the minima of the activity cycle.

  16. Strong magnetic fields and inhomogeneity in the solar corona

    SciTech Connect (OSTI)

    White, S.M.; Kundu, M.R.; Gopalswamy, N. (Maryland Univ., College Park (USA))

    1991-01-01T23:59:59.000Z

    It is shown that fields of 1800 G can exist in the corona based on observations of gyroresonance emission at 15 GHz at coronal temperatures. The strong fields occur in a small source radiating in the extraordinary (x) mode over the penumbra of a large symmetric sunspot. The optically-thin ordinary mode emission from the region shows a nearby peak at only 36,000 K which may be due to a sunspot plume, and a hole over the umbra consistent with the expected low-density material there. The x-mode source is highly asymmetric, despite the apparent symmetry of the sunspot, and its appearance and location imply that the strongest magnetic fields in the corona are localized in a compact flux tube. 21 refs.

  17. Wind loading on tracking and field-mounted solar collectors

    SciTech Connect (OSTI)

    Murphy, L.M.

    1980-12-01T23:59:59.000Z

    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.

  18. MODELING MAGNETIC FIELD STRUCTURE OF A SOLAR ACTIVE REGION CORONA USING NONLINEAR FORCE-FREE FIELDS IN SPHERICAL GEOMETRY

    SciTech Connect (OSTI)

    Guo, Y.; Ding, M. D. [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China); Liu, Y.; Sun, X. D. [W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305 (United States); DeRosa, M. L. [Lockheed Martin Advanced Technology Center, 3251 Hanover Street, Palo Alto, CA 94304 (United States); Wiegelmann, T., E-mail: guoyang@nju.edu.cn [Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Strasse 2, D-37191 Katlenburg-Lindau (Germany)

    2012-11-20T23:59:59.000Z

    We test a nonlinear force-free field (NLFFF) optimization code in spherical geometry using an analytical solution from Low and Lou. Several tests are run, ranging from idealized cases where exact vector field data are provided on all boundaries, to cases where noisy vector data are provided on only the lower boundary (approximating the solar problem). Analytical tests also show that the NLFFF code in the spherical geometry performs better than that in the Cartesian one when the field of view of the bottom boundary is large, say, 20 Degree-Sign Multiplication-Sign 20 Degree-Sign . Additionally, we apply the NLFFF model to an active region observed by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory (SDO) both before and after an M8.7 flare. For each observation time, we initialize the models using potential field source surface (PFSS) extrapolations based on either a synoptic chart or a flux-dispersal model, and compare the resulting NLFFF models. The results show that NLFFF extrapolations using the flux-dispersal model as the boundary condition have slightly lower, therefore better, force-free, and divergence-free metrics, and contain larger free magnetic energy. By comparing the extrapolated magnetic field lines with the extreme ultraviolet (EUV) observations by the Atmospheric Imaging Assembly on board SDO, we find that the NLFFF performs better than the PFSS not only for the core field of the flare productive region, but also for large EUV loops higher than 50 Mm.

  19. Solar nebula magnetic fields recorded in the Semarkona meteorite

    E-Print Network [OSTI]

    Fu, Roger R.; Weiss, Benjamin P.; Lima, Eduardo A.; Harrison, Richard J.; Bai, Xue-Ning; Desch, Steven J.; Ebel, Denton S.; Suavet, Clement; Wang, Huapei; Glenn, David; Le Sage, David; Kasama, Takeshi; Walsworth, Ronald L.; Kuan, Aaron T.

    2014-11-13T23:59:59.000Z

    images of all three vector 492 components of the magnetic field produced by the sample in the plane of NV sensors using 493 optically-detected magnetic resonance (ODMR) spectroscopy. In this technique, described by 494 Le Sage et al. (74... Figure 1. Dusty olivine-bearing chondrules from the Semarkona meteorite. (A) Optical 224 photomicrograph of chondrule DOC4 showing the location of dusty olivine grains. Image taken 225 in reflected light with crossed polarizers. (B) Annular...

  20. Solar Field Gives Tennessee Economy a Boost | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssues DOE's Nuclear EnergySmart Meters and|WaterEnergyField Gives

  1. Field-effect BaTiO{sub 3}-Si solar cells

    SciTech Connect (OSTI)

    Wang, Wentao; Liu, Fude, E-mail: fordliu@hku.hk; Man Lau, Chor; Wang, Lei; Yang, Guandong; Zheng, Dawei [Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong (China); Li, Zhigang [Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Hong Kong (China)

    2014-03-24T23:59:59.000Z

    Conventional solar cells make use of the spatial variation in electronic environment due to junctions for charge separation. We investigated field-effect BaTiO{sub 3}-Si solar cells that utilize the bound surface charges of BaTiO{sub 3} to separate charge carriers in silicon. Rectifying behavior and photovoltaic effect were observed on cells with forward polarization. Theoretical simulation indicated that the induced electric field due to BaTiO{sub 3} polarization could extend into the silicon layer, which is consistent with experimental observations. In addition, adjusting relevant parameters may optimize the electric field distribution. The cells are promising in terms of material selection, device design, and fabrication.

  2. The Astrophysical Journal, 612:L81L84, 2004 September 1 2004. The American Astronomical Society. All rights reserved. Printed in U.S.A.

    E-Print Network [OSTI]

    Priest, Eric

    a substantial amount of energy that may be associated with a whole host of physical processes in the solar Society. All rights reserved. Printed in U.S.A. RECYCLING OF THE SOLAR CORONA'S MAGNETIC FIELD R. M. Close. Andrews, Fife KY16 9SS, UK; robertc@mcs.st-and.ac.uk D. W. Longcope Department of Physics, Montana State

  3. Direct Use of Solar Energy for Lighting-Results of the Hybrid Solar Lighting Field Trial Program

    SciTech Connect (OSTI)

    Lapsa, Melissa Voss [ORNL; Beshears, David L [ORNL; Maxey, L Curt [ORNL; Ward, Christina D [ORNL

    2007-01-01T23:59:59.000Z

    Today, lighting in United States residential and commercial buildings consumes close to 5 quadrillion BTUs of primary energy and one-fifth of all electricity. In commercial buildings, one-quarter of all energy demand is for lighting. With a forecasted doubling of commercial floor space by the year 2020 comes an urgent and growing need to find more efficient ways of lighting our nation's buildings. Hybrid Solar Lighting (HSL) is a technology that can do just that by collecting sunlight and distributing it via optical fibers, into the interior of a building. A nation-wide field trial program is currently under way to provide system performance data and user-feedback essential for successful commercialization of HSL. This paper will describe several locations of the HSL system and their intended use as well as some energy savings data.

  4. Ring diagram analysis of velocity fields within the solar convection zone

    E-Print Network [OSTI]

    Sarbani Basu; H. M. Antia; S. C. Tripathy

    1998-06-23T23:59:59.000Z

    Ring diagram analysis of solar oscillation power spectra obtained from MDI data is performed to study the velocity fields within the solar convection zone. The three dimensional power spectra are fitted to a model with a Lorentzian profile in frequency and includes the advection of the wave front by horizontal flows to obtain the two horizontal components of flows as a function of the horizontal wave number and radial order of the oscillation modes. This information is then inverted using the OLA and RLS techniques to infer the variation in flow velocity with depth. The resulting velocity fields yield the mean rotation velocity at different latitudes which agrees reasonably with helioseismic estimates. The zonal flow inferred in the outermost layers also appears to be in agreement with other measurements. A meridional flow from equator polewards is found to have an amplitude of about 25 m/s near the surface and the amplitude appears to increase with depth.

  5. Spectropolarimetric diagnostics of unresolved magnetic fields in the quiet solar photosphere

    E-Print Network [OSTI]

    Shchukina, Nataliya

    2012-01-01T23:59:59.000Z

    A few years before the Hinode space telescope was launched, an investigation based on the Hanle effect in atomic and molecular lines indicated that the bulk of the quiet solar photosphere is significantly magnetized, due to the ubiquitous presence of an unresolved magnetic field with an average strength = 130 G. It was pointed out also that this "hidden" field must be much stronger in the intergranular regions of solar surface convection than in the granular regions, and it was suggested that this unresolved magnetic field could perhaps provide the clue for understanding how the outer solar atmosphere is energized. In fact, the ensuing magnetic energy density is so significant that the energy flux estimated using the typical value of 1 km/s for the convective velocity (thinking in rising magnetic loops) or the Alfven speed (thinking in Alfven waves generated by magnetic reconnection) turns out to be substantially larger than that required to balance the chromospheric energy losses. Here we present a brief re...

  6. Solar coronal magnetic field topology inferred from high resolution optical and x-ray movies

    SciTech Connect (OSTI)

    Tarbell, T.; Frank, Z.; Hurlburt, N.; Morrison, M.; Shine, R.; Title, A.; Acton, L.

    1993-01-01T23:59:59.000Z

    The authors are using high resolution digital movies of solar active regions in optical and X-ray wavelengths to study solar flares and other transients. The optical movies were collected at the Swedish Solar Observatory on La Palma using the Lockheed tunable filtergraph system, in May-July, 1992. They include longitudinal and transverse magnetograms, H-alpha Doppler and intensity images at many wavelengths, Ca K, Na D, and white light images. Simultaneous X-ray images from Yohkoh are available much of the time. Several ways to establish the connectivity of some coronal magnetic field lines are being explored. Some of the clues available are: magnetic footpoint polarities and transverse field direction; H-alpha fibrils and loops seen in several wavelengths; proper motion and Dopper shifts of blobs moving along field lines; footprint brightening in micro-flares; spreading of flare ribbons during gradual phases of flares; X-ray morphology and correlations with H-alpha; and draining of flare loops. Examples of each of these will be shown on video.

  7. THE ROTATION PROFILE OF SOLAR MAGNETIC FIELDS BETWEEN {+-}60 Degree-Sign LATITUDES

    SciTech Connect (OSTI)

    Shi, X. J.; Xie, J. L., E-mail: shixiangjun@ynao.ac.cn [Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011 (China)

    2013-08-10T23:59:59.000Z

    Through a cross-correlation analysis of the Carrington synoptic maps of solar photospheric magnetic fields from Carrington Rotation Nos. 1625 to 2129 (from 1975 February to 2012 October), the sidereal rotation rates of solar magnetic fields between {+-}60 Degree-Sign latitudes are investigated. It seems that the temporal variation of rotation rates should be related to the solar cycle phase. The rotation profile of magnetic fields is obtained: the sidereal rotation rates decrease from the equator to mid-latitude and reach their minimum values of about 13.16 deg day{sup -1} (13.17 deg day{sup -1}) at 53 Degree-Sign (54 Degree-Sign ) latitude in the northern (southern) hemisphere, then increase toward higher latitudes. This rotation profile is different from the differential rotation law obtained by Snodgrass from a cross-correlation analysis of daily magnetograms, in which the rotation rates show a steep decrease from the equator to the poles. However, it is much closer to the quasi-rigid rotation law derived by Stenflo from an auto-correlation analysis of daily magnetograms. Some possible interpretations are discussed for the resulting rotation profile.

  8. POWER ANISOTROPY IN THE MAGNETIC FIELD POWER SPECTRAL TENSOR OF SOLAR WIND TURBULENCE

    SciTech Connect (OSTI)

    Wicks, R. T.; Horbury, T. S. [Physics Department, Imperial College London, London SW7 2AZ (United Kingdom); Forman, M. A. [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11790-3800 (United States); Oughton, S., E-mail: r.wicks@imperial.ac.uk [Department of Mathematics, University of Waikato, Hamilton (New Zealand)

    2012-02-10T23:59:59.000Z

    We observe the anisotropy of the power spectral tensor of magnetic field fluctuations in the fast solar wind for the first time. In heliocentric RTN coordinates, the power in each element of the tensor has a unique dependence on the angle between the magnetic field and velocity of the solar wind ({theta}{sub B}) and the angle of the vector in the plane perpendicular to the velocity ({phi}{sub B}). We derive the geometrical effect of the high speed flow of the solar wind past the spacecraft on the power spectrum in the frame of the plasma P(k) to arrive at the observed power spectrum P(f, {theta}{sub B}, {phi}{sub B}) based on a scalar field description of turbulence theory. This allows us to predict the variation in the {phi}{sub B} direction and compare it to the data. We then transform the observations from RTN coordinates to magnetic-field-aligned coordinates. The observed reduced power spectral tensor matches the theoretical predictions we derive in both RTN and field-aligned coordinates, which means that the local magnetic field we calculate with wavelet envelope functions is an accurate representation of the physical axis of symmetry for the turbulence and implies that on average the turbulence is axisymmetric. We also show that we can separate the dominant toroidal component of the turbulence from the smaller but significant poloidal component and that these have different power anisotropy. We also conclude that the magnetic helicity is anisotropic and mostly two dimensional, arising from wavevectors largely confined to the plane perpendicular to B .

  9. On the GCR intensity and the inversion of the heliospheric magnetic field during the periods of the high solar activity

    E-Print Network [OSTI]

    Krainev, M B

    2014-01-01T23:59:59.000Z

    We consider the long-term behavior of the solar and heliospheric parameters and the GCR intensity in the periods of high solar activity and the inversions of heliospheric magnetic field (HMF). The classification of the HMF polarity structures and the meaning of the HMF inversion are discussed. The procedure is considered how to use the known HMF polarity distribution for the GCR intensity modeling during the periods of high solar activity. We also briefly discuss the development and the nearest future of the sunspot activity and the GCR intensity in the current unusual solar cycle 24.

  10. ENERGETIC PARTICLE CROSS-FIELD PROPAGATION EARLY IN A SOLAR EVENT

    SciTech Connect (OSTI)

    Laitinen, T.; Dalla, S.; Marsh, M. S. [Jeremiah Horrocks Institute, University of Central Lancashire, PR1 2HE Preston (United Kingdom)

    2013-08-20T23:59:59.000Z

    Solar energetic particles (SEPs) have been observed to easily spread across heliographic longitudes, and the mechanisms responsible for this behavior remain unclear. We use full-orbit simulations of a 10 MeV proton beam in a turbulent magnetic field to study to what extent the spread across the mean field can be described as diffusion early in a particle event. We compare the full-orbit code results to solutions of a Fokker-Planck equation including spatial and pitch angle diffusion, and of one including also propagation of the particles along random-walking magnetic field lines. We find that propagation of the particles along meandering field lines is the key process determining their cross-field spread at 1 AU at the beginning of the simulated event. The mean square displacement of the particles an hour after injection is an order of magnitude larger than that given by the diffusion model, indicating that models employing spatial cross-field diffusion cannot be used to describe early evolution of an SEP event. On the other hand, the diffusion of the particles from their initial field lines is negligible during the first 5 hr, which is consistent with the observations of SEP intensity dropouts. We conclude that modeling SEP events must take into account the particle propagation along meandering field lines for the first 20 hr of the event.

  11. Dynamo Action in the Solar Convection Zone and Tachocline: Pumping and Organization of Toroidal Fields

    E-Print Network [OSTI]

    Matthew Browning; Mark S. Miesch; Allan Sacha Brun; Juri Toomre

    2006-09-06T23:59:59.000Z

    We present the first results from three-dimensional spherical shell simulations of magnetic dynamo action realized by turbulent convection penetrating downward into a tachocline of rotational shear. This permits us to assess several dynamical elements believed to be crucial to the operation of the solar global dynamo, variously involving differential rotation resulting from convection, magnetic pumping, and amplification of fields by stretching within the tachocline. The simulations reveal that strong axisymmetric toroidal magnetic fields (about 3000 G in strength) are realized within the lower stable layer, unlike in the convection zone where fluctuating fields are predominant. The toroidal fields in the stable layer possess a striking persistent antisymmetric parity, with fields in the northern hemisphere largely of opposite polarity to those in the southern hemisphere. The associated mean poloidal magnetic fields there have a clear dipolar geometry, but we have not yet observed any distinctive reversals or latitudinal propagation. The presence of these deep magnetic fields appears to stabilize the sense of mean fields produced by vigorous dynamo action in the bulk of the convection zone.

  12. Development of the Supply Chain Optimization and Planning for the Environment (SCOPE) Tool - Applied to Solar Energy

    E-Print Network [OSTI]

    Reich-Weiser, Corinne; Fletcher, Tristan; Dornfeld, David; Horne, Steve

    2008-01-01T23:59:59.000Z

    Solar Installation Installation (USA) Installation (Germany) Tracker Panel Tracker (China)China, India, the U.S.A, and elsewhere. A single company producing a single solar

  13. Dynamics of Electric Currents, Magnetic Field Topology and Helioseismic Response of a Solar Flare

    E-Print Network [OSTI]

    Sharykin, I N

    2015-01-01T23:59:59.000Z

    The solar flare on July 30, 2011 was of a modest X-ray class (M9.3), but it made a strong photospheric impact and produced a "sunquake," observed with the Helioseismic and Magnetic Imager (HMI) on NASA's Solar Dynamics Observatory (SDO). In addition to the helioseismic waves (also observed with the SDO/AIA instrument), the flare caused a large expanding area of white-light emission and was accompanied by substantial restructuring of magnetic fields, leading to the rapid formation of a sunspot structure in the flare region. The flare produced no significant hard X-ray emission and no coronal mass ejection. This indicates that the flare energy release was mostly confined to the lower atmosphere. The absence of significant coronal mass ejection rules out magnetic rope eruption as a mechanism of helioseismic waves. We discuss the connectivity of the flare energy release with the electric currents dynamics and show the potential importance of high-speed plasma flows in the lower solar atmosphere during the flare e...

  14. INTERMITTENCY AND MULTIFRACTALITY SPECTRA OF THE MAGNETIC FIELD IN SOLAR ACTIVE REGIONS

    SciTech Connect (OSTI)

    Abramenko, Valentyna; Yurchyshyn, Vasyl [Big Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314 (United States)

    2010-10-10T23:59:59.000Z

    We present the results of a study of intermittency and multifractality of magnetic structures in solar active regions (ARs). Line-of-sight magnetograms for 214 ARs of different flare productivity observed at the center of the solar disk from 1997 January until 2006 December are utilized. Data from the Michelson Doppler Imager (MDI) instrument on board the Solar and Heliospheric Observatory operating in the high resolution mode, the Big Bear Solar Observatory digital magnetograph, and the Hinode SOT/SP instrument were used. Intermittency spectra were derived from high-order structure functions and flatness functions. The flatness function exponent is a measure of the degree of intermittency. We found that the flatness function exponent at scales below approximately 10 Mm is correlated with flare productivity (the correlation coefficient is -0.63). The Hinode data show that the intermittency regime is extended toward small scales (below 2 Mm) as compared to the MDI data. The spectra of multifractality, derived from the structure functions and flatness functions, are found to be broader for ARs of higher flare productivity as compared to those of low flare productivity. The magnetic structure of high-flaring ARs consists of a voluminous set of monofractals, and this set is much richer than that for low-flaring ARs. The results indicate the relevance of the multifractal organization of the photospheric magnetic fields to the flaring activity. The strong intermittency observed in complex and high-flaring ARs is a hint that we observe a photospheric imprint of enhanced sub-photospheric dynamics.

  15. arXiv:nucl-th/0107012v23Aug2001 The Solar hep Process in Effective Field Theory

    E-Print Network [OSTI]

    Thomas Jefferson National Accelerator Facility

    arXiv:nucl-th/0107012v23Aug2001 The Solar hep Process in Effective Field Theory T.-S. Park(a) , L University, Seoul 120-749, Korea (July 24, 2001) Using effective field theory, we calculate the S-to-next-to-next-to-leading order in heavy- baryon chiral perturbation theory are considered. Fixing the only parameter

  16. A PLAUSIBLE TWO-DIMENSIONAL VERTICAL MODEL OF THE EAST MESA GEOTHERMAL FIELD, CALIFORNIA, U.S.A

    E-Print Network [OSTI]

    Goyal, K.P.

    2013-01-01T23:59:59.000Z

    report on East Mesa and Cerro Prieto Geothermal Fields, LA-of core samples from the Cerro Prieto Geothermal Field:L, x 10 cal/ cm~sec~ K in the Cerro Prieto geothermal field,

  17. Effects of non-radial magnetic field on measuring magnetic helicity transport across solar photosphere

    E-Print Network [OSTI]

    Song, Yongliang

    2015-01-01T23:59:59.000Z

    It is generally believed that the evolution of magnetic helicity has a close relationship with solar activity. Before the launch of SDO, earlier studies have mostly used MDI/SOHO line of sight magnetograms and assumed that magnetic fields are radial when calculating magnetic helicity injection rate from photospheric magnetograms. However, this assumption is not necessarily true. Here we use the vector magnetograms and line of sight magnetograms, both taken by HMI/SDO, to estimate the effects of non-radial magnetic field on measuring magnetic helicity injection rate. We find that: 1) The effect of non-radial magnetic field on estimating tangential velocity is relatively small; 2) On estimating magnetic helicity injection rate, the effect of non-radial magnetic field is strong when active regions are observed near the limb and is relatively small when active regions are close to disk center; 3) The effect of non-radial magnetic field becomes minor if the amount of accumulated magnetic helicity is the only conce...

  18. Ferroelectric field effect of the bulk heterojunction in polymer solar cells

    SciTech Connect (OSTI)

    Li, Meng; Ma, Heng, E-mail: hengma@henannu.edu.cn; Liu, Hairui; Jiang, Yurong [College of Physics and Electronic Engineering, Henan Normal University, Xinxiang 453007 (China); Henan Key Laboratory of Photovoltaic Materials, Xinxiang 453007 (China); Niu, Heying; Amat, Adil [College of Physics and Electronic Engineering, Henan Normal University, Xinxiang 453007 (China)

    2014-06-23T23:59:59.000Z

    A ferroelectric field effect in the bulk heterojunction was found when an external electric field (EEF) was applied on the active layer of polymer solar cells (PSCs) during the annealing process of the active layer spin-coated with poly(3-hexylthiophene):[6,6]-phenyl-C{sub 61} butyric acid methyl ester. For one direction field, the short circuit current density of PSCs was improved from 7.2 to 8.0?mA/cm{sup 2}, the power conversion efficiency increased from 2.4% to 2.8%, and the incident photon-to-current conversion efficiency increased from 42% to 49% corresponding to the different EEF magnitude. For an opposite direction field, the applied EEF brought a minus effect on the performance mentioned above. EEF treatment can orientate molecular ordering of the polymer, and change the morphology of the active layer. The authors suggest a explanation that the ferroelectric field has been built in the active layer, and therefore it plays a key role in PSCs system. A needle-like surface morphology of the active film was also discussed.

  19. MAGNETIC FIELD TOPOLOGY AND THE THERMAL STRUCTURE OF THE CORONA OVER SOLAR ACTIVE REGIONS

    SciTech Connect (OSTI)

    Schrijver, Carolus J.; DeRosa, Marc L.; Title, Alan M., E-mail: schryver@lmsal.co [Lockheed Martin Advanced Technology Center, Palo Alto, CA 94304 (United States)

    2010-08-20T23:59:59.000Z

    Solar extreme ultraviolet (EUV) images of quiescent active-region coronae are characterized by ensembles of bright 1-2 MK loops that fan out from select locations. We investigate the conditions associated with the formation of these persistent, relatively cool, loop fans within and surrounding the otherwise 3-5 MK coronal environment by combining EUV observations of active regions made with TRACE with global source-surface potential-field models based on the full-sphere photospheric field from the assimilation of magnetograms that are obtained by the Michelson Doppler Imager (MDI) on SOHO. We find that in the selected active regions with largely potential-field configurations these fans are associated with (quasi-)separatrix layers (QSLs) within the strong-field regions of magnetic plage. Based on the empirical evidence, we argue that persistent active-region cool-loop fans are primarily related to the pronounced change in connectivity across a QSL to widely separated clusters of magnetic flux, and confirm earlier work that suggested that neither a change in loop length nor in base field strengths across such topological features are of prime importance to the formation of the cool-loop fans. We discuss the hypothesis that a change in the distribution of coronal heating with height may be involved in the phenomenon of relatively cool coronal loop fans in quiescent active regions.

  20. The quiet geomagnetic field at geosynchronous orbit and its dependence on solar wind dynamic pressure

    SciTech Connect (OSTI)

    Rufenach, C.L.; Schaper, J. (NOAA Space Environmental Lab., Boulder, CO (United States)); McPherron, R.L. (Univ. of California, Los Angeles (United States))

    1992-01-01T23:59:59.000Z

    Vector magnetic fields at geosynchronous orbit were measured during 1980-1984 using the operational GOES 2, GOES 5, and GOES 6 spacecraft magnetometers. The authors corrected these spacecraft measurements for offsets due to spacecraft state and then used these field estimates to create a data base with 1-min resolution. Hourly quiet field values were calculated for these years from this data base using the ground-based geomagnetic index criteria AE < 120 nT and {vert bar}Dst{vert bar} < 20 nT. These quiet field components, rotated into dipole HVD coordinates, were approximated by the first two coefficients of a two-dimensional Fourier series in time of day and season. The quiet geosynchronous field components, to first order, are given by mean values of about 90 nT, {minus}60 nT, and 5 nT; and sinusoidal diurnal amplitudes of about 21 nT, 5 nT, and 5 nT, respectively, for H, V, and D where the spacecraft magnetometer was located near the geomagnetic meridian. The second harmonic diurnal amplitudes and the first and second harmonic seasonal amplitudes are typically of the order of a few nanoteslas or less except for the D component, which exhibits a larger seasonal variation. Furthermore, a one-dimensional Fourier series in time of day was used to study the quiet field dependence on solar wind dynamic pressure, P{sub d}, by indexing the measurements into five pressure ranges during 1980. These quiet H measurements, including the pressure dependence, are compared with a first-order field model superimposed with a tail current, resulting in magnetospheric currents (magnetopause and tail) in agreement with previous model values.

  1. Scaling anisotropy of the power in parallel and perpendicular components of the solar wind magnetic field

    E-Print Network [OSTI]

    Oughton, Sean

    superthermal particles and cosmic rays appear to be diffusively coupled to the solar wind, allowing exchange

  2. The role of solar absorption in climate and climate change

    E-Print Network [OSTI]

    1 The role of solar absorption in climate and climate change William Collins UC Berkeley Research Boulder, Colorado, USA #12;2 Prior Research on Absorption and Climate Field Experiments: · Central · Climate with enhanced cloud absorption Synthesis of models and aerosol observations: · Development

  3. The mean-field solar dynamo with double cell meridional circulation pattern

    E-Print Network [OSTI]

    Pipin, V V

    2013-01-01T23:59:59.000Z

    The paper addresses the question whether the dynamo remains of the solar type if it is coupled with the two-cell in radius meridional circulation pattern. The answer is positive for a wide class of dynamo models that take into account the subsurface rotational shear. We show that the Gleisberg-type cycles, representing variations of 11-year on the centure time scale, can be generated due to a nonlinear resonance between the dynamo wave, and the large-scale magnetic field amplification in the middle of the convection zone as a result of the convergent meridional shearing flows. The conditions of such resonant interaction depends on the speed of the meridional flow and other details of the model.

  4. Solar Wind Sources in the Late Declining Phase ofCycle23: Effects of the Weak Solar Polar Field onHighSpeed Streams

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    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

  5. Solar system tests and interpretation of gauge field and Newtonian prepotential in general covariant Ho?ava-Lifshitz gravity

    E-Print Network [OSTI]

    Kai Lin; Shinji Mukohyama; Anzhong Wang

    2013-01-07T23:59:59.000Z

    We study spherically symmetric, stationary vacuum configurations in general covariant theory (U(1) extension) of Ho\\v{r}ava-Lifshitz gravity with the projectability condition and an arbitrary coupling constant $\\lambda$, and obtain all the solutions in closed forms. If the gauge field $A$ and the Newtonian prepotential $\\varphi$ do not directly couple to matter fields, the theory is inconsistent with solar system tests for $\\lambda\

  6. RFID TECHNOLOGY FOR AVI: FIELD DEMONSTRATION OF A WIRELESS SOLAR POWERED E-ZPASS1

    E-Print Network [OSTI]

    Mitchell, John E.

    mark of the Port Authority of New York and New Jersey #12;- 2 - ROADWAY SIDE MOUNT SOLAR PANEL OUTPUT Bluetooth GROUND/POLE-MOUNT CABINET CHARGER BATTERY ARRAY MGATE I READER OVERHEAD SOLAR PANEL (POLE MOUNTGateTM tag reader, antenna, solar panel, batteries and charger, enclosure and a pocket PC (PPC). A schematic

  7. Report on the analysis of field data relating to the reliability of solar hot water systems.

    SciTech Connect (OSTI)

    Menicucci, David F. (Building Specialists, Inc., Albuquerque, NM)

    2011-07-01T23:59:59.000Z

    Utilities are overseeing the installations of thousand of solar hot water (SHW) systems. Utility planners have begun to ask for quantitative measures of the expected lifetimes of these systems so that they can properly forecast their loads. This report, which augments a 2009 reliability analysis effort by Sandia National Laboratories (SNL), addresses this need. Additional reliability data have been collected, added to the existing database, and analyzed. The results are presented. Additionally, formal reliability theory is described, including the bathtub curve, which is the most common model to characterize the lifetime reliability character of systems, and for predicting failures in the field. Reliability theory is used to assess the SNL reliability database. This assessment shows that the database is heavily weighted with data that describe the reliability of SHW systems early in their lives, during the warranty period. But it contains few measured data to describe the ends of SHW systems lives. End-of-life data are the most critical ones to define sufficiently the reliability of SHW systems in order to answer the questions that the utilities pose. Several ideas are presented for collecting the required data, including photometric analysis of aerial photographs of installed collectors, statistical and neural network analysis of energy bills from solar homes, and the development of simple algorithms to allow conventional SHW controllers to announce system failures and record the details of the event, similar to how aircraft black box recorders perform. Some information is also presented about public expectations for the longevity of a SHW system, information that is useful in developing reliability goals.

  8. ON THE ORIGIN OF THE 1/f SPECTRUM IN THE SOLAR WIND MAGNETIC FIELD

    SciTech Connect (OSTI)

    Verdini, Andrea [Solar-Terrestrial Center of Excellence-SIDC, Royal Observatory of Belgium, Bruxelles (Belgium); Grappin, Roland [LUTH, Observatoire de Paris, CNRS, Universite Paris-Diderot, 92190 Meudon (France); Pinto, Rui [Laboratoire AIM Paris-Saclay, CEA/Irfu, and Universite Paris-Diderot CNRS/INSU, Gis-sur-Yvette (France); Velli, Marco, E-mail: verdini@oma.be, E-mail: Roland.Grappin@obspm.fr, E-mail: rui.pinto@cea.fr, E-mail: mvelli@jpl.nasa.gov [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA (United States)

    2012-05-10T23:59:59.000Z

    We present a mechanism for the formation of the low-frequency 1/f magnetic spectrum based on numerical solutions of a shell-reduced MHD model of the turbulent dynamics inside the sub-Alfvenic solar wind. We assign reasonably realistic profiles to the wind speed and the density along the radial direction, and a radial magnetic field. Alfven waves of short periodicity (600 s) are injected at the base of the chromosphere, penetrate into the corona, and are partially reflected, thus triggering a turbulent cascade. The cascade is strong for the reflected wave while it is weak for the outward propagating waves. Reflection at the transition region recycles the strong turbulent spectrum into the outward weak spectrum, which is advected beyond the Alfvenic critical point without substantial evolution. There, the magnetic field has a perpendicular power-law spectrum with slope close to the Kolmogorov -5/3. The parallel spectrum is inherited from the frequency spectrum of large (perpendicular) eddies. The shape is a double power law with slopes of {approx_equal} - 1 and -2 at low and high frequencies, respectively, with the position of the break depending on the injected spectrum. We suggest that the double power-law spectrum measured by Helios at 0.3 AU, where the average magnetic field is not aligned with the radial (contrary to our assumptions), results from the combination of such different spectral slopes. At low frequency the parallel spectrum dominates with its characteristic 1/f shape, while at higher frequencies its steep spectral slope (-2) is masked by the more energetic perpendicular spectrum (slope -5/3).

  9. Field tracer investigation of unsaturated zone flow paths and mechanisms in agricultural soils of northwestern Mississippi, USA

    E-Print Network [OSTI]

    of agricultural chemicals and withdrawal of groundwater for irrigation have led to water quality and supply issues flow of water below the root zone is consid- ered minimal; regional groundwater models predict only 5 within and below the root zone of a fallow soy- bean field were assessed by performing a 2-m ring

  10. Simulation of coastal flow fields when the incident solar radiation is obscured

    SciTech Connect (OSTI)

    Molenkamp, C.R.

    1986-12-01T23:59:59.000Z

    In the aftermath of a large scale nuclear exchange, smoke from fires started by the explosions would be lofted into the troposphere and lower stratosphere. If sufficient amounts are injected, this smoke would be so thick that very little solar radiation would penetrate to the ground. The ground surface, obscured from insolation by the smoke, would cool rapidly leading to temperature decreases of 10 to 25/sup 0/C in the lower atmosphere. Among the many possible effects accompanying this cooling, a suggestion has been made that regions of enhanced and persistent precipitation could occur along continental coastlines due to the response of the flow fields to the more rapid cooling of air over land than over the oceans. This paper describes a simulation intended to investigate this super land breeze hypothesis using a mesoscale model that has been used to simulate normal land and sea breeze flows. The simulation shows that fog and clouds form over both land and sea with the net result that there is no dramatic temperature difference at the continental coastline and no significant induced flow or vertical motion. This simulation again contravenes the super land breeze precipitation hypothesis. In addition, it points out the moderating effect cloud and fog formation would have on the rate of cooling over the continents.

  11. The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Magnetohydrodynamics Simulation Module for the Global Solar Corona

    E-Print Network [OSTI]

    Hayashi, Keiji; Liu, Yang; Bobra, Monica G; Sun, Xudong D; Norton, Aimee A

    2015-01-01T23:59:59.000Z

    Time-dependent three-dimensional magnetohydrodynamics (MHD) simulation modules are implemented at the Joint Science Operation Center (JSOC) of Solar Dynamics Observatory (SDO). The modules regularly produce three-dimensional data of the time-relaxed minimum-energy state of the solar corona using global solar-surface magnetic-field maps created from Helioseismic Magnetic Imager (HMI) full-disk magnetogram data. With the assumption of polytropic gas with specific heat ratio of 1.05, three types of simulation products are currently generated: i) simulation data with medium spatial resolution using the definitive calibrated synoptic map of the magnetic field with a cadence of one Carrington rotation, ii) data with low spatial resolution using the definitive version of the synchronic frame format of the magnetic field, with a cadence of one day, and iii) low-resolution data using near-real-time (NRT) synchronic format of the magnetic field on daily basis. The MHD data available in the JSOC database are three-dimen...

  12. Sandia National Laboratories: solar

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

    Beam Profiling On November 2, 2012, in Concentrating Solar Power, News, Renewable Energy, Solar On Thursday, June 7, we began beam profiling the NSTTF field heliostat beam....

  13. Solar Wind Sources in the Late Declining Phase ofCycle23: Effects of the Weak Solar Polar Field onHighSpeed Streams

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    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,

  14. Solar Energy Materials & Solar Cells 78 (2003) 567595 Low-mobility solar cells: a device physics primer

    E-Print Network [OSTI]

    Schiff, Eric A.

    Solar Energy Materials & Solar Cells 78 (2003) 567­595 Low-mobility solar cells: a device physics, Syracuse, New York 13244-1130, USA Abstract The properties of pin solar cells based on photogeneration for the solar conversion efficiency of amorphous silicon-based cells that are limited by valence bandtail

  15. Increasing the efficiency of organic solar cells by photonic and electrostatic-field enhancements

    SciTech Connect (OSTI)

    Nalwa, Kanwar

    2012-11-03T23:59:59.000Z

    Organic photovoltaic (OPV) technology is an attractive solar-electric conversion paradigm due to the promise of low cost roll-to-roll production and amenability to flexible substrates. Power conversion efficiency (PCE) exceeding 7% has recently been achieved. OPV cells suffer from low charge carrier mobilities of polymers, leading to recombination losses, higher series resistances and lower fill-factors. Thus, it is imperative to develop fabrication methodologies that can enable efficient optical absorption in films thinner than optical absorption length. Active layers conformally deposited on light-trapping, microscale textured, grating-type surfaces is one possible approach to achieve this objective. In this study, 40% theoretical increase in photonic absorption over flat OPVs is shown for devices with textured geometry by the simulation results. For verifying this theoretical result and improving the efficiency of OPVs by light trapping, OPVs were fabricated on grating-type textured substrates possessing t pitch and -coat PV active-layer on these textured substrates led to over filling of the valleys and shunts at the crest, which severely affected the performance of the resultant PV devices. Thus, it is established that although the optical design is important for OPV performance but the potential of light trapping can only be effectively tapped if the textures are amenable for realizing a conformal active layer. It is discovered that if the height of the underlying topographical features is reduced to sub-micron regime (e.g. 300 nm) and the pitch is increased to more than a micron (e.g. 2 ?m), the textured surface becomes amenable to coating a conformal PV active-layer. The resultant PV cells showed 100% increase in average light absorption near the band edge due to trapping of higher wavelength photons, and 20% improvement in power conversion efficiency as compared with the flat PV cell. Another factor that severely limits the performance of OPVs is recombination of charge carriers. Thus it becomes imperative to understand the effect of processing conditions such as spin coating speed and drying rate on defect density and hence induced carrier recombination mechanism. In this study, It is shown that slow growth (longer drying time) of the active-layer leads to reduction of sub-bandgap traps by an order of magnitude as compared to fast grown active-layer. By coupling the experimental results with simulations, it is demonstrated that at one sun condition, slow grown device has bimolecular recombination as the major loss mechanism while in the fast grown device with high trap density, the trap assisted recombination dominates. It has been estimated that non-radiative recombination accounts nearly 50% of efficiency loss in modern OPVs. Generally, an external bias (electric field) is required to collect all the photogenerated charges and thus prevent their recombination. The motivation is to induce additional electric field in otherwise low mobility conjugated polymer based active layer by incorporating ferroelectric dipoles. This is expected to facilitate singlet exciton dissociation in polymer matrix and impede charge transfer exciton (CTE) recombination at polymer:fullerene interface. For the first time, it is shown that the addition of ferroelectric dipoles to modern bulk heterojunction (BHJ) can significantly improve exciton dissociation, resulting in a ~50% enhancement of overall solar cell efficiency. The devices also exhibit the unique ferroelectric-photovoltaic effect with polarization-controlled power conversion efficiency.

  16. Testing a Solar Coronal Magnetic Field Extrapolation Code with the Titov-Demoulin Magnetic Flux Rope Model

    E-Print Network [OSTI]

    Jiang, Chaowei

    2015-01-01T23:59:59.000Z

    In the solar corona, magnetic flux rope is believed to be a fundamental structure accounts for magnetic free energy storage and solar eruptions. Up to the present, the extrapolation of magnetic field from boundary data is the primary way to obtain fully three-dimensional magnetic information of the corona. As a result, the ability of reliable recovering coronal magnetic flux rope is important for coronal field extrapolation. In this paper, our coronal field extrapolation code (CESE-MHD-NLFFF, Jiang & Feng 2012) is examined with an analytical magnetic flux rope model proposed by Titov & Demoulin (1999), which consists of a bipolar magnetic configuration holding an semi-circular line-tied flux rope in force-free equilibrium. By using only the vector field in the bottom boundary as input, we test our code with the model in a representative range of parameter space and find that the model field is reconstructed with high accuracy. Especially, the magnetic topological interfaces formed between the flux rop...

  17. Solar Flare Prediction Using SDO/HMI Vector Magnetic Field Data with a Machine-Learning Algorithm

    E-Print Network [OSTI]

    Bobra, Monica G

    2014-01-01T23:59:59.000Z

    We attempt to forecast M-and X-class solar flares using a machine-learning algorithm, called Support Vector Machine (SVM), and four years of data from the Solar Dynamics Observatory's Helioseismic and Magnetic Imager, the first instrument to continuously map the full-disk photospheric vector magnetic field from space. Most flare forecasting efforts described in the literature use either line-of-sight magnetograms or a relatively small number of ground-based vector magnetograms. This is the first time a large dataset of vector magnetograms has been used to forecast solar flares. We build a catalog of flaring and non-flaring active regions sampled from a database of 2,071 active regions, comprised of 1.5 million active region patches of vector magnetic field data, and characterize each active region by 25 parameters. We then train and test the machine-learning algorithm and we estimate its performances using forecast verification metrics with an emphasis on the True Skill Statistic (TSS). We obtain relatively h...

  18. Progress on the 1.6-meter New Solar Telescope at Big Bear Solar Observatory

    E-Print Network [OSTI]

    Progress on the 1.6-meter New Solar Telescope at Big Bear Solar Observatory C. Denkera, P. R, Newark, NJ 07102, U.S.A. bBig Bear Solar Observatory, 40386 North Shore Lane, Big Bear City, CA 92314, U.S.A. cSeoul National University, School of Earth and Environmental Science, Seoul, 151-742 Republic

  19. Comparative Analysis of Super-Kamiokande and SNO Solar-Neutrino Data and the Photospheric Magnetic Field

    E-Print Network [OSTI]

    P. A. Sturrock

    2006-10-05T23:59:59.000Z

    We analyze Super-Kamiokande, SNO, and photospheric magnetic-field data for the common time interval, namely the SNO D2O phase. Concerning rotational modulation, the magnetic-field power spectrum shows the strongest peaks at the second and sixth harmonics of the solar synodic rotation frequency [3 nu(rot) and 7 nu(rot)]. The restricted Super-Kamiokande dataset shows strong modulation at the second harmonic. The SNO D2O dataset shows weak modulation at that frequency, but strong modulation in the sixth-harmonic frequency band. We estimate the significance level of the correspondence of the Super-Kamiokande second-harmonic peak with the corresponding magnetic-field peak to be 0.0004, and the significance level of the correspondence of the SNO D2O sixth-harmonic peak with the corresponding magnetic-field peak to be 0.009. By estimating the amplitude of the modulation of the solar neutrino flux at the second harmonic from the restricted Super-Kamiokande dataset, we find that the weak power at that frequency in the SNO D2O power spectrum is not particularly surprising. Concerning 9.43 yr-1, we find no peak at this frequency in the power spectrum formed from the restricted Super-Kamiokande dataset, so it is no surprise that this peak does not show up in the SNO D2O dataset, either.

  20. FIELD LINES TWISTING IN A NOISY CORONA: IMPLICATIONS FOR ENERGY STORAGE AND RELEASE, AND INITIATION OF SOLAR ERUPTIONS

    SciTech Connect (OSTI)

    Rappazzo, A. F. [Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, DE 19716 (United States); Velli, M. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Einaudi, G., E-mail: rappazzo@udel.edu [Berkeley Research Associates, Inc., 6537 Mid Cities Avenue, Beltsville, MD 20705 (United States)

    2013-07-10T23:59:59.000Z

    We present simulations modeling closed regions of the solar corona threaded by a strong magnetic field where localized photospheric vortical motions twist the coronal field lines. The linear and nonlinear dynamics are investigated in the reduced magnetohydrodynamic regime in Cartesian geometry. Initially the magnetic field lines get twisted and the system becomes unstable to the internal kink mode, confirming and extending previous results. As typical in this kind of investigations, where initial conditions implement smooth fields and flux-tubes, we have neglected fluctuations and the fields are laminar until the instability sets in. However, previous investigations indicate that fluctuations, excited by photospheric motions and coronal dynamics, are naturally present at all scales in the coronal fields. Thus, in order to understand the effect of a photospheric vortex on a more realistic corona, we continue the simulations after kink instability sets in, when turbulent fluctuations have already developed in the corona. In the nonlinear stage the system never returns to the simple initial state with ordered twisted field lines, and kink instability does not occur again. Nevertheless, field lines get twisted, although in a disordered way, and energy accumulates at large scales through an inverse cascade. This energy can subsequently be released in micro-flares or larger flares, when interaction with neighboring structures occurs or via other mechanisms. The impact on coronal dynamics and coronal mass ejections initiation is discussed.

  1. The Dependence of the Strength and Thickness of Field-Aligned Currents on Solar Wind and Ionospheric Parameters

    SciTech Connect (OSTI)

    Johnson, Jay R. [PPPL; Wing, Simon [Johns Hopkins University

    2014-08-01T23:59:59.000Z

    Sheared plasma flows at the low-latitude boundary layer correlate well with early afternoon auroral arcs and #12;eld-aligned currents [Sonnerup, 1980; Lundin and Evans, 1985]. We present a simple analytic model that relates solar wind and ionospheric parameters to the strength and thickness of field-aligned currents in a region of sheared velocity, such as the low latitude boundary layer. We compare the predictions of the model with DMSP observations and #12;nd remarkably good scaling of the currents with solar wind and ionospheric parameters. The sheared boundary layer thickness is inferred to be around 3000km consistent with observational studies. The analytic model provides a simple way to organize data and to infer boundary layer structures from ionospheric data.

  2. Conference Proceedings (Refereed Invited Reviews). 1. "Role of Large-Scale Magnetic Fields and Material Flows in the Formation of Solar Filaments

    E-Print Network [OSTI]

    Mackay, Duncan

    Conference Proceedings (Refereed Invited Reviews). 1. "Role of Large-Scale Magnetic Fields Scale Structures and their Role in Solar Activity, ASP Conference Proceedings Series, 346, 177. 2. "The-297. Conference Proceedings (Others). 1. "Basic Magnetic Field Configurations for Filament Channels and Filaments

  3. Offshore Wind Power USA

    Broader source: Energy.gov [DOE]

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

  4. The Hubble Wide Field Camera 3 Test of Surfaces in the Outer Solar System: Spectral Variation on Kuiper Belt Objects

    E-Print Network [OSTI]

    Fraser, Wesley C; Glass, Florian

    2015-01-01T23:59:59.000Z

    Here we present additional photometry of targets observed as part of the Hubble Wide Field Camera 3 Test of Surfaces in the Outer Solar System. 12 targets were re-observed with the Wide Field Camera 3 in optical and NIR wavebands designed to compliment those used during the first visit. Additionally, all observations originally presented by Fraser and Brown (2012) were reanalyzed through the same updated photometry pipeline. A reanalysis of the optical and NIR colour distribution reveals a bifurcated optical colour distribution and only two identifiable spectral classes, each of which occupies a broad range of colours and have correlated optical and NIR colours, in agreement with our previous findings. We report the detection of significant spectral variations on 5 targets which cannot be attributed to photometry errors, cosmic rays, point spread function or sensitivity variations, or other image artifacts capable of explaining the magnitude of the variation. The spectrally variable objects are found to have ...

  5. Potential for Photovoltaic Solar Installation in Non-Irrigated Corners of Center Pivot Irrigation Fields in the State of Colorado

    SciTech Connect (OSTI)

    Roberts, B.

    2011-07-01T23:59:59.000Z

    The State of Colorado expressed an interest in assessing the potential for photovoltaic (PV) solar installations on non-irrigated corners of center-pivot irrigation (CPI) fields throughout the state. Using aerial imagery and irrigated land data available from the Colorado Water Conservation Board, an assessment of potentially suitable sites was produced. Productivity estimates were calculated from that assessment. The total area of non-irrigated corners of CPI fields in Colorado was estimated to be 314,674 acres, which could yield 223,418 acres of installed PV panels assuming 71% coverage in triangular plots. The total potential annual electricity production for the state was estimated to be 56,821 gigawatt hours (GWH), with an average of 1.3 GWH per available plot.

  6. Selective observation of photo-induced electric fields inside different material components in bulk-heterojunction organic solar cell

    SciTech Connect (OSTI)

    Chen, Xiangyu; Taguchi, Dai; Manaka, Takaaki; Iwamoto, Mitsumasa, E-mail: iwamoto@pe.titech.ac.jp [Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1, S3-33 O-okayama, Meguro-ku, Tokyo 152-8552 (Japan)] [Department of Physical Electronics, Tokyo Institute of Technology, 2-12-1, S3-33 O-okayama, Meguro-ku, Tokyo 152-8552 (Japan)

    2014-01-06T23:59:59.000Z

    By using electric-field-induced optical second-harmonic generation (EFISHG) measurement at two laser wavelengths of 1000?nm and 860?nm, we investigated carrier behavior inside the pentacene and C{sub 60} component of co-deposited pentacene:C{sub 60} bulk-heterojunctions (BHJs) organic solar cells (OSCs). The EFISHG experiments verified the presence of two carrier paths for electrons and holes in BHJs OSCs. That is, two kinds of electric fields pointing in opposite directions are identified as a result of the selectively probing of SHG activation from C{sub 60} and pentacene. Also, under open-circuit conditions, the transient process of the establishment of open-circuit voltage inside the co-deposited layer has been directly probed, in terms of photovoltaic effect. The EFISHG provides an additional promising method to study carrier path of electrons and holes as well as dissociation of excitons in BHJ OSCs.

  7. CALIBRATING CONVECTIVE PROPERTIES OF SOLAR-LIKE STARS IN THE KEPLER FIELD OF VIEW

    SciTech Connect (OSTI)

    Bonaca, Ana; Tanner, Joel D.; Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Chaplin, William J.; Metcalfe, Travis S.; Christensen-Dalsgaard, Jorgen; Garcia, Rafael A.; Mathur, Savita [Kavli Institute for Theoretical Physics, Kohn Hall, University of California, Santa Barbara, CA 93106 (United States); Monteiro, Mario J. P. F. G.; Campante, Tiago L. [Centro de Astrofisica and Faculdade de Ciencias, Universidade do Porto, Rua das Estrelas, 4150-762 Porto (Portugal); Ballot, Jerome [CNRS, Institut de Recherche en Astrophysique et Planetologie, 14 avenue Edouard Belin, F-31400 Toulouse (France); Bedding, Timothy R.; Corsaro, Enrico [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Bonanno, Alfio [INAF-Osservatorio Astrofisico di Catania, Via S.Sofia 78, I-95123 Catania (Italy); Broomhall, Anne-Marie; Elsworth, Yvonne [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT (United Kingdom); Bruntt, Hans; Karoff, Christoffer; Kjeldsen, Hans [Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Hekker, Saskia, E-mail: ana.bonaca@yale.edu, E-mail: sarbani.basu@yale.edu, E-mail: joel.tanner@yale.edu [Astronomical Institute Anton Pannekoek, University of Amsterdam, Science Park 904, 1098-XH Amsterdam (Netherlands); and others

    2012-08-10T23:59:59.000Z

    Stellar models generally use simple parameterizations to treat convection. The most widely used parameterization is the so-called mixing-length theory where the convective eddy sizes are described using a single number, {alpha}, the mixing-length parameter. This is a free parameter, and the general practice is to calibrate {alpha} using the known properties of the Sun and apply that to all stars. Using data from NASA's Kepler mission we show that using the solar-calibrated {alpha} is not always appropriate, and that in many cases it would lead to estimates of initial helium abundances that are lower than the primordial helium abundance. Kepler data allow us to calibrate {alpha} for many other stars and we show that for the sample of stars we have studied, the mixing-length parameter is generally lower than the solar value. We studied the correlation between {alpha} and stellar properties, and we find that {alpha} increases with metallicity. We therefore conclude that results obtained by fitting stellar models or by using population-synthesis models constructed with solar values of {alpha} are likely to have large systematic errors. Our results also confirm theoretical expectations that the mixing-length parameter should vary with stellar properties.

  8. Development of Performance Acceptance Test Guidelines for Large Commercial Parabolic Trough Solar Fields: Preprint

    SciTech Connect (OSTI)

    Kearney, D.; Mehos, M.

    2010-12-01T23:59:59.000Z

    Prior to commercial operation, large solar systems in utility-size power plants need to pass a performance acceptance test conducted by the EPC contractor or owners. In lieu of the present absence of engineering code developed for this purpose, NREL has undertaken the development of interim guidelines to provide recommendations for test procedures that can yield results of a high level of accuracy consistent with good engineering knowledge and practice. The fundamental differences between acceptance of a solar power plant and a conventional fossil-fired plant are the transient nature of the energy source and the necessity to utilize an analytical performance model in the acceptance process. These factors bring into play the need to establish methods to measure steady state performance, potential impacts of transient processes, comparison to performance model results, and the possible requirement to test, or model, multi-day performance within the scope of the acceptance test procedure. The power block and BOP are not within the boundaries of this guideline. The current guideline is restricted to the solar thermal performance of parabolic trough systems and has been critiqued by a broad range of stakeholders in CSP development and technology.

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

    E-Print Network [OSTI]

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

    2015-01-01T23:59:59.000Z

    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 ...

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

    E-Print Network [OSTI]

    Lave, Matthew S.

    2012-01-01T23:59:59.000Z

    of Tracking for Capturing Solar Radiation in the ContinentalTime Scales of the Surface Solar Radiation Field, Journal ofof Tracking for Capturing Solar Radiation in the Continental

  11. Solar Permitting & Inspection Webinar Series

    Office of Energy Efficiency and Renewable Energy (EERE)

    ICLEI Local Governments for Sustainability U.S.A. and the Interstate Renewable Energy Council, Inc. (IREC) present a series of three webinars on Solar Permitting & Inspection. As part of the U...

  12. Physics of the Earth and Planetary Interiors 154 (2006) 290298 TRM in low magnetic fields: a minimum field that can be

    E-Print Network [OSTI]

    Kletetschka, Gunther

    , University of Helsinki, Finland g Bartol Research Institute, University of Delaware, Newark, Delaware, USA, or thermal demagnetization of TRM. Extraterrestrial magnetic fields in our solar system are weaker than Interiors 154 (2006) 290­298 291 energy must play an important role in TRM acquisition in all these grain

  13. TRANSPORT EFFECTS IN THE EVOLUTION OF THE GLOBAL SOLAR MAGNETIC FIELD

    E-Print Network [OSTI]

    Petrovay, Kristóf

    Astrof?? �sica de Canarias, La Laguna, Tenerife, E­38200 Spain G. SZAK ?? ALY E? otv? os University of tracers of the magnetic field such as quiescent filaments, polar faculae, or the coronal green line

  14. Scheuten Solar USA 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt Ltd JumpInformation Evaluation, Regionalization

  15. Solar Millennium LLC USA | Open Energy Information

    Open Energy Info (EERE)

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

  16. Solar Systems USA | Open Energy Information

    Open Energy Info (EERE)

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

  17. Think Solar USA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with formSoutheasternInformationPolicyREDD+ BookThinSilicon Jump to:Think

  18. H2USA | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking of Blythe Solar Power Project Groundof|than Ever | DepartmentofH2USA H2USA

  19. Proceedings of 2004 Solar Conference

    E-Print Network [OSTI]

    Kissock, Kelly

    Proceedings of 2004 Solar Conference July 1114, 2004, Portland, Oregon USA ISEC2004-65168 A HYBRID using a hybrid of Hay, Davies, Klucher, Reindl (HDKR) method for calculating total solar radiation the 1970s and 1980s as companies sought to reduce heating costs. As awareness of the potential for natural

  20. TRANSVERSE COMPONENT OF THE MAGNETIC FIELD IN THE SOLAR PHOTOSPHERE OBSERVED BY SUNRISE

    SciTech Connect (OSTI)

    Danilovic, S.; Beeck, B.; Pietarila, A.; Schuessler, M.; Solanki, S. K.; Barthol, P.; Gandorfer, A. [Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau (Germany); MartInez Pillet, V.; Bonet, J. A. [Instituto de Astrofisica de Canarias, C/Via Lactea s/n, 38200 La Laguna, Tenerife (Spain); Del Toro Iniesta, J. C. [Instituto de Astrofisica de AndalucIa (CSIC), Apartado de Correos 3004, 18080 Granada (Spain); Domingo, V. [Grupo de AstronomIa y Ciencias del Espacio, Universidad de Valencia, 46980 Paterna, Valencia (Spain); Berkefeld, T.; Schmidt, W. [Kiepenheuer-Institut fuer Sonnenphysik, Schoeneckstr. 6, 79104 Freiburg (Germany); Knoelker, M. [High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000 (United States); Title, A. M., E-mail: danilovic@mps.mpg.d [Lockheed Martin Solar and Astrophysics Laboratory, Bldg. 252, 3251 Hanover Street, Palo Alto, CA 94304 (United States)

    2010-11-10T23:59:59.000Z

    We present the first observations of the transverse component of a photospheric magnetic field acquired by the imaging magnetograph SUNRISE/IMaX. Using an automated detection method, we obtain statistical properties of 4536 features with significant linear polarization signal. We obtain a rate of occurrence of 7 x 10{sup -4} s{sup -1} arcsec{sup -2}, which is 1-2 orders of magnitude larger than the values reported by previous studies. We show that these features have no characteristic size or lifetime. They appear preferentially at granule boundaries with most of them being caught in downflow lanes at some point. Only a small percentage are entirely and constantly embedded in upflows (16%) or downflows (8%).

  1. EVOLUTION OF SOLAR MAGNETIC FIELD AND ASSOCIATED MULTIWAVELENGTH PHENOMENA: FLARE EVENTS ON 2003 NOVEMBER 20

    SciTech Connect (OSTI)

    Kumar, Pankaj; Uddin, Wahab [Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 129 (India); Manoharan, P. K., E-mail: pkumar@aries.res.i, E-mail: wahab@aries.res.i, E-mail: mano@ncra.tifr.res.i [Radio Astronomy Centre, Tata Institute of Fundamental Research, Udhagamandalam (Ooty) 643 001 (India)

    2010-02-20T23:59:59.000Z

    We analyze Halpha images, soft X-ray profiles, magnetograms, extreme ultra-violet images and, radio observations of two homologous flare events (M1.4/1N and M9.6/2B) on 2003 November 20 in the active region NOAA 10501 and study properties of reconnection between twisted filament systems, energy release, and associated launch of coronal mass ejections. During both events twisted filaments observed in Halpha approached each other and initiated the flare processes. However, the second event showed the formation of cusp as the filaments interacted. The rotation of sunspots of opposite polarities, inferred from the magnetograms likely powered the twisted filaments and injection of helicity. Along the current sheet between these two opposite polarity sunspots, the shear was maximum, which could have caused the twist in the filament. At the time of interaction between filaments, the reconnection took place and flare emission in thermal and nonthermal energy ranges attained the maximum. The radio signatures revealed the opening of field lines resulting from the reconnection. The Halpha images and radio data provide the inflow speed leading to reconnection and the scale size of the particle acceleration region. The first event produced a narrow and slow CME, whereas the later one was associated with a fast full halo CME. The halo CME signatures observed between the Sun and Earth using white-light and scintillation images and in situ measurements indicated the magnetic energy utilized in the expansion and propagation. The magnetic cloud signature at the Earth confirmed the flux rope ejected at the time of filament interaction and reconnection.

  2. Flexible Assembly Solar Technology

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

    field and secured on steel pylons. PROJECT DESCRIPTION The research team is applying automation processes to the design of a Flexible Assembly Solar Technology (FAST). FAST is an...

  3. Non-linear force-free field modeling of a solar active region around the time of a major flare and coronal mass ejection

    E-Print Network [OSTI]

    C. J. Schrijver; M. L. DeRosa; T. Metcalf; G. Barnes; B. Lites; T. Tarbell; J. McTiernan; G. Valori; T. Wiegelmann; M. S. Wheatland; T. Amari; G. Aulanier; P. Demoulin; M. Fuhrmann; K. Kusano; S. Regnier; J. K. Thalmann

    2007-11-30T23:59:59.000Z

    Solar flares and coronal mass ejections are associated with rapid changes in field connectivity and powered by the partial dissipation of electrical currents in the solar atmosphere. A critical unanswered question is whether the currents involved are induced by the motion of pre-existing atmospheric magnetic flux subject to surface plasma flows, or whether these currents are associated with the emergence of flux from within the solar convective zone. We address this problem by applying state-of-the-art nonlinear force-free field (NLFFF) modeling to the highest resolution and quality vector-magnetographic data observed by the recently launched Hinode satellite on NOAA Active Region 10930 around the time of a powerful X3.4 flare. We compute 14 NLFFF models with 4 different codes and a variety of boundary conditions. We find that the model fields differ markedly in geometry, energy content, and force-freeness. We discuss the relative merits of these models in a general critique of present abilities to model the coronal magnetic field based on surface vector field measurements. For our application in particular, we find a fair agreement of the best-fit model field with the observed coronal configuration, and argue (1) that strong electrical currents emerge together with magnetic flux preceding the flare, (2) that these currents are carried in an ensemble of thin strands, (3) that the global pattern of these currents and of field lines are compatible with a large-scale twisted flux rope topology, and (4) that the ~10^32 erg change in energy associated with the coronal electrical currents suffices to power the flare and its associated coronal mass ejection.

  4. Overview of BNL's Solar Energy Research Plans

    E-Print Network [OSTI]

    Homes, Christopher C.

    Overview of BNL's Solar Energy Research Plans March 2011 #12;2 Why Solar Energy Research at BNL BNL's capabilities can advance solar energy In the Northeast #12;North Array Field South Array Field Variability and Non-Dispatchability · Solar energy varies · Solar generation cannot be dispatched when needed

  5. DOE SunShot Webinar: Solar for All- A Community Solar Webinar

    Broader source: Energy.gov [DOE]

    This DOE SunShot Outreach Partnership webinar, presented in partnership with ICLEI Local Governments for Sustainability USA, will focus on solar programs that are complimentary to ICLEI's Renewables Division as part of the DOE's SunShot Initiative. The webinar will feature the city of Beaverton, Oregon's Solar on Reservoirs project, and Tompkins County, New York's Solarize Program.

  6. Modern Solar Facilities Advanced Solar Science, 18 F. Kneer, K. G. Puschmann, A. D. Wittmann (eds.)

    E-Print Network [OSTI]

    physics in the United States are periodically evaluated by panels of the National Research Council (ParkerModern Solar Facilities ­ Advanced Solar Science, 1­8 F. Kneer, K. G. Puschmann, A. D. Wittmann (eds.) c Universit¨atsverlag G¨ottingen 2007 Ground-Based Solar Facilities in the U.S.A. Carsten Denker

  7. Development and testing of a photometric method to identify non-operating solar hot water systems in field settings.

    SciTech Connect (OSTI)

    He, Hongbo (University of New Mexico, Albuquerque, NM); Vorobieff, Peter V. (University of New Mexico, Albuquerque, NM); Menicucci, David (University of New Mexico, Albuquerque, NM); Mammoli, Andrea A. (University of New Mexico, Albuquerque, NM); Carlson, Jeffrey J.

    2012-06-01T23:59:59.000Z

    This report presents the results of experimental tests of a concept for using infrared (IR) photos to identify non-operational systems based on their glazing temperatures; operating systems have lower glazing temperatures than those in stagnation. In recent years thousands of new solar hot water (SHW) systems have been installed in some utility districts. As these numbers increase, concern is growing about the systems dependability because installation rebates are often based on the assumption that all of the SHW systems will perform flawlessly for a 20-year period. If SHW systems routinely fail prematurely, then the utilities will have overpaid for grid-energy reduction performance that is unrealized. Moreover, utilities are responsible for replacing energy for loads that failed SHW system were supplying. Thus, utilities are seeking data to quantify the reliability of SHW systems. The work described herein is intended to help meet this need. The details of the experiment are presented, including a description of the SHW collectors that were examined, the testbed that was used to control the system and record data, the IR camera that was employed, and the conditions in which testing was completed. The details of the associated analysis are presented, including direct examination of the video records of operational and stagnant collectors, as well as the development of a model to predict glazing temperatures and an analysis of temporal intermittency of the images, both of which are critical to properly adjusting the IR camera for optimal performance. Many IR images and a video are presented to show the contrast between operating and stagnant collectors. The major conclusion is that the technique has potential to be applied by using an aircraft fitted with an IR camera that can fly over an area with installed SHW systems, thus recording the images. Subsequent analysis of the images can determine the operational condition of the fielded collectors. Specific recommendations are presented relative to the application of the technique, including ways to mitigate and manage potential sources of error.

  8. EnergyGauge USA: A Residential Building Energy Simulation Design Tool

    E-Print Network [OSTI]

    Fairey, P.; Vieira, R. K.; Parker, D. S.; Hanson, B.; Broman, P. A.; Grant, J. B.; Fuehrlein, B.; Gu, L.

    2002-01-01T23:59:59.000Z

    The Florida Solar Energy Center (FSEC) has developed new software (EnergyGauge USA) which allows simple calculation and rating of energy use of residential buildings around the United States. In the past, most residential analysis and rating...

  9. SOURCE REGIONS OF THE INTERPLANETARY MAGNETIC FIELD AND VARIABILITY IN HEAVY-ION ELEMENTAL COMPOSITION IN GRADUAL SOLAR ENERGETIC PARTICLE EVENTS

    SciTech Connect (OSTI)

    Ko, Yuan-Kuen; Wang, Yi-Ming [Space Science Division, Naval Research Laboratory, Code 7680, Washington, DC 20375 (United States); Tylka, Allan J. [NASA Goddard Space Flight Center, Code 672, Greenbelt, MD 20771 (United States); Ng, Chee K. [College of Science, George Mason University, Fairfax, VA 22030 (United States); Dietrich, William F., E-mail: yko@ssd5.nrl.navy.mil [Praxis, Inc., Alexandria, VA 22303 (United States)

    2013-10-20T23:59:59.000Z

    Gradual solar energetic particle (SEP) events are those in which ions are accelerated to their observed energies by interactions with a shock driven by a fast coronal mass ejection (CME). Previous studies have shown that much of the observed event-to-event variability can be understood in terms of shock speed and evolution in the shock-normal angle. However, an equally important factor, particularly for the elemental composition, is the origin of the suprathermal seed particles upon which the shock acts. To tackle this issue, we (1) use observed solar-wind speed, magnetograms, and the potential-field source-surface model to map the Sun-L1 interplanetary magnetic field (IMF) line back to its source region on the Sun at the time of the SEP observations and (2) then look for a correlation between SEP composition (as measured by Wind and Advanced Composition Explorer at ?2-30 MeV nucleon{sup 1}) and characteristics of the identified IMF source regions. The study is based on 24 SEP events, identified as a statistically significant increase in ?20 MeV protons and occurring in 1998 and 2003-2006, when the rate of newly emergent solar magnetic flux and CMEs was lower than in solar-maximum years, and the field-line tracing is therefore more likely to be successful. We find that the gradual SEP Fe/O is correlated with the field strength at the IMF source, with the largest enhancements occurring when the footpoint field is strong due to the nearby presence of an active region (AR). In these cases, other elemental ratios show a strong charge-to-mass (q/M) ordering (at least on average), similar to that found in impulsive events. Such results lead us to suggest that magnetic reconnection in footpoint regions near ARs bias the heavy-ion composition of suprathermal seed ions by processes qualitatively similar to those that produce larger heavy-ion enhancements in impulsive SEP events. To address potential technical concerns about our analysis, we also discuss efforts to exclude impulsive SEP events from our event sample.

  10. Abengoa Solar, Inc. (Mojave Solar) | Department of Energy

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

    Solar, Inc. (Mojave Solar) Abengoa Solar, Inc. (Mojave Solar) Abengoa Solar, Inc. (Mojave Solar) Abengoa Solar, Inc. (Mojave Solar) Abengoa Solar, Inc. (Mojave Solar) Abengoa...

  11. Solar Rights

    Broader source: Energy.gov [DOE]

    In June 2010, Louisiana enacted solar rights legislation (HB 751) that prohibits certain entities from unreasonably restricting a property owner from installing a solar collector. Solar collectors...

  12. Coronal and Solar Wind Elemental Abundances J. C. Raymond , J. E. Mazur + , F. Allegrini , E. Antonucci # , G. Del Zanna ,

    E-Print Network [OSTI]

    Del Zanna, Giulio

    Coronal and Solar Wind Elemental Abundances J. C. Raymond #3; , J. E. Mazur + , F. Allegrini #3, Johns Hopkins Road, Laurel, MD 20723 USA k Naval Research Laboratory, Washington, DC USA ++ MIT, Room 37. Coronal elemental abundances, as compared with abundances in the solar wind and solar energetic particles

  13. Intrinsic Solar System decoupling of a scalar-tensor theory with a universal coupling between the scalar field and the matter Lagrangian

    E-Print Network [OSTI]

    Olivier Minazzoli; Aurlien Hees

    2013-08-13T23:59:59.000Z

    In this communication, we present a class of Brans-Dicke-like theories with a universal coupling between the scalar field and the matter Lagrangian. We show this class of theories naturally exhibits a decoupling mechanism between the scalar field and matter. As a consequence, this coupling leads to almost the same phenomenology as general relativity in the Solar System: the trajectories of massive bodies and the light propagation differ from general relativity only at the second post-Newtonian order. Deviations from general relativity are beyond present detection capabilities. However, this class of theories predicts a deviation of the gravitational redshift at a level detectable by the future ACES and STE/QUEST missions.

  14. Cusp/cleft auroral forms and activities in relation to ionospheric convection: Responses to specific changes in solar wind and interplanetary magnetic field conditions

    SciTech Connect (OSTI)

    Sandholt, P.E. [Univ., of Oslo, Oslo (Norway)] [Univ., of Oslo, Oslo (Norway); Farrugia, C.J. [Univ. of Malta, Msida (Malta)] [Univ. of Malta, Msida (Malta); Stauning, P. [Danish Meteorological Institute, Copenhagen (Denmark)] [Danish Meteorological Institute, Copenhagen (Denmark); Crowley, S.W.H. [Imperial College, London (United Kingdom)] [Imperial College, London (United Kingdom)

    1996-03-01T23:59:59.000Z

    The authors describe in detail a four hour period on Dec 17, 1992, of cusp/cleft region observations, made in conjunction with the occurance of a transient auroral event. There was an IMF directional discontinuity where the fields changed from positive IMF B{sub y} (B{sub z}{much_lt}0) to large negative B{sub y} (B{sub z}>0) in conjunction with a change in convection direction in the cusp region. They present data from satellite observations, in addition to ground based data collected over an array of stations in Greenland and Svalbard. They view this as a first step toward an effort to correlate responses in the ionosphere to different solar wind and interplantetary magnetic field conditions. They analyze this data in terms of the array of different conditions which was exhibited in the ionosphere over this four hour period.

  15. Synoptic Observing Programs at Big Bear Solar Observatory

    E-Print Network [OSTI]

    Solar Observatory in China, and will explore collaboration with observatories in Canary Island to extendSynoptic Observing Programs at Big Bear Solar Observatory Haimin Wang and Philip R. Goode Big Bear Solar Observatory, New Jersey Institute of Technology, Newark, NJ 07102, USA Abstract. New Jersey

  16. THE FREQUENCY AGILE SOLAR RADIOTELESCOPE T. S. Bastian

    E-Print Network [OSTI]

    Edgemont Road, Charlottesville, VA 22903, USA ABSTRACT The Frequency Agile Solar Radiotelescope (FASR1 THE FREQUENCY AGILE SOLAR RADIOTELESCOPE T. S. Bastian National Radio Astronomy Observatory, 520), a telescope concept currently under study, will be a ground based solar-dedicated radio telescope designed

  17. MORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL

    E-Print Network [OSTI]

    Alam, Muhammad A.

    MORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL Biswajit Ray, Pradeep, West Lafayette, Indiana, USA ABSTRACT Polymer based bulk heterostructure (BH) solar cell offers a relatively inexpensive option for the future solar cell technology, provided its efficiency increases beyond

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

    SciTech Connect (OSTI)

    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

    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.

  19. Solar Policy Environment: Seattle

    Broader source: Energy.gov [DOE]

    The objective of the Emerald City Solar Initiative is to overcome the barriers to widespread deployment of solar energy technology, dramatically increasing residential, commercial, City-owned, and community-scale solar energy use. The City has assembled a strong team of partners that have proven track records in the fields of public planning, renewable energy resource mapping, financial analysis, site analysis, education and outreach, policy analysis and advocacy, community organizing and renewable energy project development.

  20. SOLAR ENERGY PROGRAM: CHAPTER FROM THE ENERGY AND ENVIRONMENT ANNUAL REPORT 1979

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01T23:59:59.000Z

    field of high-temperature solar process heat. The ultimatechemical heat storage process for a steam solar electric

  1. DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING

    E-Print Network [OSTI]

    Authors, Various

    2012-01-01T23:59:59.000Z

    energy market penetration for passive solar heating systemsMarket field test the feasibility of passive solar heating andand market aggregation). Technology development for passive solar heating and

  2. GEOMAGNETIC CONSEQUENCES OF THE SOLAR FLARES DURING THE LAST HALE SOLAR CYCLE (II)

    E-Print Network [OSTI]

    GEOMAGNETIC CONSEQUENCES OF THE SOLAR FLARES DURING THE LAST HALE SOLAR CYCLE (II) Georgeta Maris@aira.astro.ro ABSTRACT/RESUME The effects of the solar energetic phenomena cover the entire terrestrial environment, from is the solar plasma that may originate from solar eruptive phenomena that take their energy from magnetic field

  3. Public Lecture Prospects for Solar

    E-Print Network [OSTI]

    Public Lecture Prospects for Solar Energy Utilization 4 p.m., October 8 100 Lindquist Hall Scientific lecture O Thermodynamically Efficient Solar Energy Concentration 2 p.m., October 7 128 Jabara Hall-Merced and director of the California Advanced Solar Technologies Institute. He invented the field of non

  4. Predicting solar cycle 24 with a solar dynamo model

    E-Print Network [OSTI]

    Arnab Rai Choudhuri; Piyali Chatterjee; Jie Jiang

    2007-01-18T23:59:59.000Z

    Whether the upcoming cycle 24 of solar activity will be strong or not is being hotly debated. The solar cycle is produced by a complex dynamo mechanism. We model the last few solar cycles by `feeding' observational data of the Sun's polar magnetic field into our solar dynamo model. Our results fit the observed sunspot numbers of cycles 21-23 extremely well and predict that cycle~24 will be about 35% weaker than cycle~23.

  5. OCTOBER/NOVEMBER 2003 ICMEs: ACE/EPAM SOLAR ENERGETIC PARTICLE OBSERVATIONS

    E-Print Network [OSTI]

    1 OCTOBER/NOVEMBER 2003 ICMEs: ACE/EPAM SOLAR ENERGETIC PARTICLE OBSERVATIONS O. E. Malandraki1 Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey, USA 5 NJ Institute of Technology, Center for Solar-Terrestrial Research, Newark, New Jersey, USA #12;2 Abstract In late October and early

  6. SciTech Connect: Solar Energy Education. Home economics: student...

    Office of Scientific and Technical Information (OSTI)

    Solar Energy Education. Home economics: student activities. Field test edition Citation Details In-Document Search Title: Solar Energy Education. Home economics: student...

  7. National Laboratory Concentrating Solar Power Research and Development

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

    and performance improvements across all major concentrating solar power (CSP) subsystems-solar fields, power plants, receivers, and thermal storage-are necessary to achieve the...

  8. Breakthrough Cutting Technology Promises to Reduce Solar Costs

    Broader source: Energy.gov [DOE]

    Silicon Genesis advancing the field of solar energy by developing a process that will virtually eliminate all waste when cutting materials needed to implement solar technology.

  9. NRG Solar (California Valley Solar Ranch) | Department of Energy

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

    Solar (California Valley Solar Ranch) NRG Solar (California Valley Solar Ranch) NRG Solar (California Valley Solar Ranch) NRG Solar (California Valley Solar Ranch) Location: San...

  10. Solar Easements

    Broader source: Energy.gov [DOE]

    Virginia's solar easement law is similar to those in effect in other states. The Virginia Solar Easements Act of 1978 allows property owners to create binding solar easements for the purpose of...

  11. The solar interior - radial structure, rotation, solar activity cycle

    E-Print Network [OSTI]

    Axel Brandenburg

    2007-03-28T23:59:59.000Z

    Some basic properties of the solar convection zone are considered and the use of helioseismology as an observational tool to determine its depth and internal angular velocity is discussed. Aspects of solar magnetism are described and explained in the framework of dynamo theory. The main focus is on mean field theories for the Sun's magnetic field and its differential rotation.

  12. Solar collector

    DOE Patents [OSTI]

    Wilhelm, William G. (Cutchogue, NY)

    1982-01-01T23:59:59.000Z

    The field of this invention is solar collectors, and more particularly, the invention pertains to a flat plate collector that employs high performance thin films. The solar collector of this invention overcomes several problems in this field, such as excessive hardware, cost and reliability, and other prior art drawbacks outlined in the specification. In the preferred form, the apparatus features a substantially rigid planar frame (14). A thin film window (42) is bonded to one planar side of the frame. An absorber (24) of laminate construction is comprised of two thin film layers (24a, 24b) that are sealed perimetrically. The layers (24a, 24b) define a fluid-tight planar envelope (24c) of large surface area to volume through which a heat transfer fluid flows. Absorber (24) is bonded to the other planar side of the frame. The thin film construction of the absorber assures substantially full envelope wetting and thus good efficiency. The window and absorber films stress the frame adding to the overall strength of the collector.

  13. The Astrophysical Journal, 755:33 (7pp), 2012 August 10 doi:10.1088/0004-637X/755/1/33 C 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Reames, Donald V.

    and therefore control the heat flow process. They are critical for establishing a host of other solar variables. The American Astronomical Society. All rights reserved. Printed in the U.S.A. COMPOSITION OF THE SOLAR CORONA, SOLAR WIND, AND SOLAR ENERGETIC PARTICLES J. T. Schmelz1 , D. V. Reames2 , R. von Steiger3,4 , and S

  14. Young Red Spheroidal Galaxies in the Hubble Deep Fields: Evidence for a Truncated IMF at ~2M_solar and a Constant Space Density to z~2

    E-Print Network [OSTI]

    Tom Broadhurst; Rychard J. Bouwens

    1999-03-08T23:59:59.000Z

    The optical-IR images of the Northern and Southern Hubble Deep Fields are used to measure the spectral and density evolution of early-type galaxies. The mean optical SED is found to evolve passively towards a mid F-star dominated spectrum by z ~ 2. We demonstrate with realistic simulations that hotter ellipticals would be readily visible if evolution progressed blueward and brightward at z > 2, following a standard IMF. The colour distributions are best fitted by a `red' IMF, deficient above ~2 M_solar and with a spread of formation in the range 1.5 3 Gyrs independent of its formation redshift. Regarding density evolution, we demonstrate that the sharp decline in numbers claimed at z > 1 results from a selection bias against distant red galaxies in the optical, where the flux is too weak for morphological classification, but is remedied with relatively modest IR exposures revealing a roughly constant space density to z ~ 2. We point out that the lack of high mass star-formation inferred here and the requirement of metals implicates cooling-flows of pre-enriched gas in the creation of the stellar content of spheroidal galaxies. Deep-field X-ray images will be very helpful to examine this possibility.

  15. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    Estimating Unmeasured Solar Radiation Quantities . . . . . .Appendix C - Appendix 0 - Solar Radiation Glossary. ConversSolar Data a. Solar Radiation. , , . , . . , , , , . , . . .

  16. THE ASTROPHYSICAL JOURNAL, 550:10641074, 2001 April 1 ( 2001. The American Astronomical Society. All rights reserved. Printed in U.S.A.

    E-Print Network [OSTI]

    Reames, Donald V.

    that the particles in the large "" gradual ÏÏ solar energetic particle (SEP) events are acceler- ated at shock waves. All rights reserved. Printed in U.S.A. ANGULAR DISTRIBUTIONS OF SOLAR ENERGETIC PARTICLES D. V. REAMES in the angular distributions of H, He, O, and Fe ions at MeV energies during solar energetic particle (SEP

  17. THE ASTROPHYSICAL JOURNAL, 546:569575, 2001 January 1 2001. The American Astronomical Society. All rights reserved. Printed in U.S.A.(

    E-Print Network [OSTI]

    DeForest, Craig

    of the solar system at solar minimum. Plumes were originally seen in white light (Saito 1965; Koutchmy 1977 rights reserved. Printed in U.S.A.( OBSERVATION OF POLAR PLUMES AT HIGH SOLAR ALTITUDES C. E. DEFOREST1 Southwest Research Institute, 1050 Walnut Street, Suite 426, Boulder, CO 80302; deforest=boulder.swri.edu S

  18. Community Shared Solar with Solarize

    Broader source: Energy.gov [DOE]

    An overview of the concept behind The Solarize Guidebook, which offers neighborhoods a plan for getting volume discounts when making group purchases of rooftop solar energy systems.

  19. Overview of BNL's Solar Energy Research Plansgy

    E-Print Network [OSTI]

    Homes, Christopher C.

    Overview of BNL's Solar Energy Research Plansgy March 8, 2011, #12;Outline O i f th LISF S l PV P j Field LIPA Substation South Array Field LIPA Substation #12;#12;#12;BNL is developing a solar energy, February 2009 · EERE Renewable Systems interconnection Study, February 2008 · EERE Solar Energy Technology

  20. The Astrophysical Journal, 765:45 (11pp), 2013 March 1 doi:10.1088/0004-637X/765/1/45 C 2013. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Howard, Tim

    ) governs the appearance of solar wind features in heliospheric images. Thomson-scattered light yields Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA; howard@boulder.swri.edu 2 National Solar Observatory, Sunspot, NM 88349, USA 3 George Mason University, 4400 University Drive

  1. The Astrophysical Journal, 754:102 (10pp), 2012 August 1 doi:10.1088/0004-637X/754/2/102 C 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Howard, Tim

    . The American Astronomical Society. All rights reserved. Printed in the U.S.A. WHITE-LIGHT OBSERVATIONS OF SOLAR. Reinard2 1 Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA; howard-scale solar wind transients from the Sun out to 1 AU. This comparison was performed during a few weeks around

  2. Manuscript Submitted to Solar Energy 4/2002 A NEW OPERATIONAL SATELLITE-TO-IRRADIANCE MODEL DESCRIPTION AND VALIDATION

    E-Print Network [OSTI]

    Perez, Richard R.

    Manuscript Submitted to Solar Energy 4/2002 A NEW OPERATIONAL SATELLITE-TO-IRRADIANCE MODEL, OR, USA #12;Manuscript Submitted to Solar Energy 4/2002 ABSTRACT We present a new simple model zenith angle to account for first order solar #12;Manuscript Submitted to Solar Energy 4/2002 geometry

  3. Worldwide Energy and Manufacturing USA Inc formerly Worldwide...

    Open Energy Info (EERE)

    USA Inc formerly Worldwide Manufacturing USA Jump to: navigation, search Name: Worldwide Energy and Manufacturing USA Inc (formerly Worldwide Manufacturing USA) Place: San Bruno,...

  4. Philadelphia, Pennsylvania: Solar in Action (Brochure), Solar...

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

    Philadelphia, Pennsylvania: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Philadelphia, Pennsylvania: Solar in Action (Brochure),...

  5. Scattering Solar Thermal Concentrators

    Broader source: Energy.gov [DOE]

    "This fact sheet describes a scattering solar thermal concentrators project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by the Pennsylvania State University, is working to demonstrate a new, scattering-based approach to concentrating sunlight that aims to improve the overall performance and reliability of the collector field. The research team aims to show that scattering solar thermal collectors are capable of achieving optical performance equal to state-of-the-art parabolic trough systems, but with the added benefits of immunity to wind-load tracking error, more efficient land use, and utilization of stationary receivers."

  6. Next-Generation Solar Collectors for CSP

    Broader source: Energy.gov [DOE]

    This fact sheet on Next-Generation Collectors for CSP highlights a solar energy program awarded through the 2012 SunShot Concentrating Solar Power R&D awards. The team is developing new solar collector base technologies for next-generation heliostats used in power tower systems. If successful, this project will result in a 50% reduction in solar field equipment cost and a 30% reduction in field installation cost compared to existing heliostat designs.

  7. Infrared modulation spectroscopy of interfaces in amorphous silicon solar cells

    E-Print Network [OSTI]

    Schiff, Eric A.

    Infrared modulation spectroscopy of interfaces in amorphous silicon solar cells Kai Zhu a,1 , E Solar, Toano, VA 23168, USA Abstract We report infrared depletion modulation spectra for near an infrared modulation spectroscopy technique that probes the optical spectra of dopants and defects

  8. Design and global optimization of high-efficiency solar thermal systems

    E-Print Network [OSTI]

    Soljaèiæ, Marin

    Design and global optimization of high-efficiency solar thermal systems with tungsten cermets David, Massachusetts 02139, USA bermel@mit.edu Abstract: Solar thermal, thermoelectric, and thermophotovoltaic (TPV by selective solar absorbers and TPV selective emitters. To improve these critical components, we study a class

  9. Department of Solar Energy & Environmental Physics Conference presentations, 2006-2007.

    E-Print Network [OSTI]

    Prigozhin, Leonid

    Department of Solar Energy & Environmental Physics Conference presentations, 2006-2007. Albu, (eds.) Proceedings of the 22nd European Photovoltaic Solar Energy Conference. Milan, Italy, pp. 132: L. Vayssieres (ed.) Solar Hydrogen and Nanotechnology - Proceedings of SPIE, San Diego, USA. Albu

  10. Solar Energy 74 (2003) 157173 Comparison between ray-tracing simulations and bi-directional

    E-Print Network [OSTI]

    Solar Energy 74 (2003) 157­173 Comparison between ray-tracing simulations and bi-Louis Scartezzini a Solar Energy and Building Physics Laboratory LESO-PB, Swiss Federal Institute of Technology EPFL Cyclotron Road, MS 2-300, Berkeley, CA 94720-8134, USA Abstract Evaluation of solar heat gain and daylight

  11. Nanomaterials-Enabled Dye-Sensitized Solar Cells and Jun Lou1

    E-Print Network [OSTI]

    O-7 Nanomaterials-Enabled Dye-Sensitized Solar Cells Pei Dong1 and Jun Lou1 1 sensitized solar cells (DSCs), the third generation of solar cells, have attracted more and more attention Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, U.S.A. Dye

  12. Building Commissioning in the USA

    E-Print Network [OSTI]

    Castro, N.; Friedman, H.

    2006-01-01T23:59:59.000Z

    Building Commissioning in the USA Natascha Castro, Annex 47- US Team Leader National Institute of Standards and Technology Hannah Friedman, Cost-Benefit Subtask Leader Portland Energy Conservation, Inc. Asian Pacific Conference on Building...

  13. Solar Rights

    Broader source: Energy.gov [DOE]

    Cities and counties in North Carolina generally may not adopt ordinances prohibiting the installation of "a solar collector that gathers solar radiation as a substitute for traditional energy for...

  14. Total Solar Irradiance Variability and the Solar Activity Cycle

    E-Print Network [OSTI]

    Probhas Raychaudhuri

    2006-05-06T23:59:59.000Z

    It is suggested that the solar variability is due to the perturbed nature of the solar core and this variability is provided by the variability of the solar neutrino flux from the solar neutrino detectors i.e., Homestake, Superkamiokande, SAGE and GALLEX-GNO. The solar neutrino flux in the standard solar model (SSM) was calculated on the assumption of L_nu (neutrino luminosity) = L_gamma (optical luminosity) which implies that if there is a change in optical luminosity then solar neutrino flux data will also be changed. An internal dynamo due to the cyclic variation of nuclear energy generation inside the core of the sun is responsible for the solar activity cycle was suggested and thus the internal magnetic field is also variable. Again the changes in the nuclear energy generation induce structural changes that result in variations of the global solar parameters i.e., luminosity, radius and temperatures etc. From the analysis of total solar irradiance (TSI) data during the year from 1970 to 2003 we have found five phases within the solar activity cycle. The first phase (I) starts before two years from the sunspot minimum. The second phase (II) starts at the time of sunspot minimum and phase (III) starts before 2/3 years from sunspot maximum whereas phase (IV) starts at sunspot maximum and fifth phase (V) starts at after 2-3 years from sunspot maximum.

  15. Solar DEM Models : A solar image in color band b, mn pixels,

    E-Print Network [OSTI]

    Wolfe, Patrick J.

    Solar DEM Models : A solar image in color band b, mn pixels, containing a particular solar feature, for t = 1, 2, . . . , T. btM sianFieldRandomGaus I M I I bbb T t bbtt bbb bb 2 1 2 )( #12;Solar DEM.bI : the measure error of the ith row and jth column pixel of the certain image in color band b. ijbe #12;Solar DEM

  16. The 33st International Electric Propulsion Conference, The George Washington University, USA October 6 10, 2013

    E-Print Network [OSTI]

    King, Lyon B.

    The 33st International Electric Propulsion Conference, The George Washington University, USA with FerroTec EFH-1 in a non- uniform magnetic field IEPC-2013-319 Presented at the 33rd International Electric Propulsion Conference, The George Washington University Washington, D.C. USA October 6 10

  17. COMMISSION GUIDEBOOK NEW SOLAR HOMES PARTNERSHIP

    E-Print Network [OSTI]

    , incentive, CECPV Calculator, HERS Rater, field verification, Program Administrator, shading, module, inverter, plan check Nguyen, LeQuyen, Farakh Nasim. 2012. New Solar Homes Partnership Guidebook (Fifth

  18. STAFF DRAFT GUIDEBOOK NEW SOLAR HOMES PARTNERSHIP

    E-Print Network [OSTI]

    , incentive, CECPV Calculator, HERS Rater, field verification, Program Administrator, shading, module, inverter, plan check Nguyen, LeQuyen, Farakh Nasim. 2013. New Solar Homes Partnership Guidebook (Sixth

  19. Solar Phys (2009) 256: 285305 DOI 10.1007/s11207-009-9354-5

    E-Print Network [OSTI]

    California at Berkeley, University of

    2009-01-01T23:59:59.000Z

    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

  20. Where does all the data come from? Geoffrey Fox (Indiana University, USA), Tony Hey (Microsoft Research, USA) and Anne Trefethen

    E-Print Network [OSTI]

    Research, USA) and Anne Trefethen (Oxford University, UK) 1. Introduction The data deluge [1] is all around of the field with many petabytes of data derived from advanced instruments. The deluge and its impact focus on some examples of the scientific data deluge. We anticipate that some of the tools, techniques

  1. Solar forecasting review

    E-Print Network [OSTI]

    Inman, Richard Headen

    2012-01-01T23:59:59.000Z

    and forecasting of solar radiation data: a review,forecasting of solar- radiation data, Solar Energy, vol.sequences of global solar radiation data for isolated sites:

  2. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    Estimating Unmeasured Solar Radiation Quantities . . . . . .Weather Data . . . . . , . , . . . . . . . . . .Solar DataB. l'he Solar Constant. . . . . . C. Solar Time and Standard

  3. Sandia National Laboratories: solar

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

    Test Facility NSTTF Nuclear Energy photovoltaic Photovoltaics PV Renewable Energy solar Solar Energy solar power Solar Research Solid-State Lighting SSLS Connect Contact Us RSS...

  4. Sandia National Laboratories: solar

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

    NSTTF Nuclear Energy photovoltaic Photovoltaics PV Renewable Energy solar Solar Energy solar power Solar Research Solid-State Lighting SSLS Connect Contact Us RSS Google+...

  5. The Astrophysical Journal Letters, 750:L25 (5pp), 2012 May 1 doi:10.1088/2041-8205/750/1/L25 C 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Matter and Space Science, Purple Mountain Observatory, CAS, Nanjing 210008, China 2 Big Bear Solar OF SOLAR CORONA HEATING Haisheng Ji1,2 , Wenda Cao2,3 , and Philip R. Goode2,3 1 Key Laboratory for Dark Observatory, 40386 North Shore Lane, Big Bear City, CA 92314, USA 3 Center for Solar-Terrestrial Research, New

  6. The Astrophysical Journal Letters, 736:L13 (6pp), 2011 July 20 doi:10.1088/2041-8205/736/1/L13 C 2011. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Schrijver, Karel

    OF QUASI-PERIODIC FAST PROPAGATING WAVES OF 2000 km s-1 IN THE LOW SOLAR CORONA BY THE SOLAR DYNAMICS. Schrijver1 , Markus J. Aschwanden1 , Bart De Pontieu1 , and Theodore D. Tarbell1 1 Lockheed Martin Solar and NASA Goddard Space Flight Center, Code 671, 8800 Greenbelt Road, Greenbelt, MD 20771, USA Received 2011

  7. Solar Car

    SciTech Connect (OSTI)

    None

    2010-01-01T23:59:59.000Z

    Des Moines Central Academy Middle School students compete in the Solar Car Challenge at the National Science Bowl, May 2 in Washington D.C.

  8. Solar Rights

    Broader source: Energy.gov [DOE]

    Maine law requires that any municipal ordinance, bylaw, or regulation adopted after September 30, 2009 regulating solar energy devices on residential property follow certain requirements. The rules...

  9. SOLAR FLARE CYCLES , M. D. POPESCU1, 2

    E-Print Network [OSTI]

    on the solar disk. They occur when magnetic field loops undergo reorganization, releasing energy into the solar of a large amount of magnetic energy, previously stored in the solar corona, and dissipated through magneticSOLAR FLARE CYCLES G. MARI1 , M. D. POPESCU1, 2 1 Astronomical Institute of the Romanian Academy

  10. FINE-GRAINED NANOCRYSTALLINE SILICON P-LAYER FOR HIGH OPEN CIRCUIT VOLTAGE A-SI:H SOLAR CELLS

    E-Print Network [OSTI]

    Deng, Xunming

    FINE-GRAINED NANOCRYSTALLINE SILICON P-LAYER FOR HIGH OPEN CIRCUIT VOLTAGE A-SI:H SOLAR CELLS of Michigan, Ann Arbor, MI 48109, USA ABSTRACT Hydrogenated amorphous silicon (a-Si:H) single- junction solar). It is found that the p-layer that leads to high Voc a-Si:H solar cells is a mixed-phase material that contains

  11. THE ASTROPHYSICAL JOURNAL, 474:518528, 1997 January 1 1997. The American Astronomical Society. All rights reserved. Printed in U.S.A.(

    E-Print Network [OSTI]

    Rutten, Rob

    rights reserved. Printed in U.S.A.( ULTRAVIOLET JETS AND BRIGHT POINTS IN THE SOLAR CHROMOSPHERE. II Utrecht, The Netherlands AND J. W. COOK E.O. Hulburt Center for Space Research, Code 7668, Naval Research rocket observations of the solar chromosphere to search for relationships between high

  12. How is open solar magnetic flux lost over the solar cycle? M. J. Owens,1,2

    E-Print Network [OSTI]

    Lockwood, Mike

    How is open solar magnetic flux lost over the solar cycle? M. J. Owens,1,2 N. U. Crooker,3 and M 2011. [1] The Sun's open magnetic field, magnetic flux dragged out into the heliosphere by the solar wind, varies by approximately a factor of 2 over the solar cycle. We consider the evolution of open

  13. USA Manufacturing: Order (2013-CE-5336)

    Broader source: Energy.gov [DOE]

    DOE ordered USA Manufacturing to pay a $8,000 civil penalty after finding USA Manufacturing had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  14. Hisense USA: Order (2010-CE-1211)

    Broader source: Energy.gov [DOE]

    DOE issued an Order after entering into a Compromise Agreement with Hisense USA Corp. after finding Hisense USA had failed to certify that certain models of residential refrigerators, refrigerator-freezers, and freezers comply with the applicable energy conservation standards.

  15. Euro Chef USA: Order (2014-CE-23004)

    Broader source: Energy.gov [DOE]

    DOE ordered Euro Chef USA Inc. to pay a $8,000 civil penalty after finding Euro Chef USA had failed to certify that certain models of cooking products comply with the applicable energy conservation standards.

  16. Nasmyth focus instrumentation of the New Solar Telescope at Big Bear Solar Observatory

    E-Print Network [OSTI]

    field stop and heat reflector (heat-stop), elliptical secondary mirror (SM) and diagonal flats. Figure 1Nasmyth focus instrumentation of the New Solar Telescope at Big Bear Solar Observatory Wenda Caoab Coulterb, and Philip R. Goodeab aCenter for Solar-Terrestrial Research, New Jersey Institute of Technology

  17. Detection of solar events

    DOE Patents [OSTI]

    Fischbach, Ephraim; Jenkins, Jere

    2013-08-27T23:59:59.000Z

    A flux detection apparatus can include a radioactive sample having a decay rate capable of changing in response to interaction with a first particle or a field, and a detector associated with the radioactive sample. The detector is responsive to a second particle or radiation formed by decay of the radioactive sample. The rate of decay of the radioactive sample can be correlated to flux of the first particle or the field. Detection of the first particle or the field can provide an early warning for an impending solar event.

  18. About Total Lubricants USA, Inc. Headquartered in Linden, New Jersey, Total Lubricants USA provides

    E-Print Network [OSTI]

    Fisher, Kathleen

    New Jersey, Total Lubricants USA provides advanced quality industrial lubrication productsAbout Total Lubricants USA, Inc. Headquartered in Linden, New Jersey, Total Lubricants USA provides. A subsidiary of Total, S.A., the world's fourth largest oil company, Total Lubricants USA still fosters its

  19. ESMN Solar Magnetism ESMN Pages --Plain Text Copy August 13, 2011

    E-Print Network [OSTI]

    Rutten, Rob

    1 European Network ESMN Solar Magnetism ESMN Pages -- Plain Text Copy August 13, 2011 http . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Structure and dynamics of solar surface fields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.3 Topology and evolution of solar active regions

  20. CORONAL MAGNETIC FIELD MEASUREMENTS THROUGH GYRORESONANCE EMISSION

    E-Print Network [OSTI]

    White, Stephen

    Chapter 5 CORONAL MAGNETIC FIELD MEASUREMENTS THROUGH GYRORESONANCE EMISSION Stephen M. White This article reviews the use of gyroresonance emission at radio wavelengths to measure coronal magnetic fields. Keywords: Sun, solar corona, solar magnetic fields, solar radio emission Introduction Since the realization

  1. Building Commissioning in the USA

    E-Print Network [OSTI]

    Castro, N.; Friedman, H.

    2006-01-01T23:59:59.000Z

    Building Commissioning in the USA Natascha Castro, Annex 47- US Team Leader National Institute of Standards and Technology Hannah Friedman, Cost-Benefit Subtask Leader Portland Energy Conservation, Inc. Asian Pacific Conference on Building... Program (PIER)? Utility programs and non-profit organizations ? Energy Efficiency Mandates ? California, New York, Vermont, Minnesota, City of Portland Oregon ? Building Energy Codes include Cx ? California, State of Washington, Massachusetts US Team...

  2. Method for processing silicon solar cells

    DOE Patents [OSTI]

    Tsuo, Y. Simon (Golden, CO); Landry, Marc D. (Lafayette, CO); Pitts, John R. (Lakewood, CO)

    1997-01-01T23:59:59.000Z

    The instant invention teaches a novel method for fabricating silicon solar cells utilizing concentrated solar radiation. The solar radiation is concentrated by use of a solar furnace which is used to form a front surface junction and back-surface field in one processing step. The present invention also provides a method of making multicrystallline silicon from amorphous silicon. The invention also teaches a method of texturing the surface of a wafer by forming a porous silicon layer on the surface of a silicon substrate and a method of gettering impurities. Also contemplated by the invention are methods of surface passivation, forming novel solar cell structures, and hydrogen passivation.

  3. Method for processing silicon solar cells

    DOE Patents [OSTI]

    Tsuo, Y.S.; Landry, M.D.; Pitts, J.R.

    1997-05-06T23:59:59.000Z

    The instant invention teaches a novel method for fabricating silicon solar cells utilizing concentrated solar radiation. The solar radiation is concentrated by use of a solar furnace which is used to form a front surface junction and back-surface field in one processing step. The present invention also provides a method of making multicrystalline silicon from amorphous silicon. The invention also teaches a method of texturing the surface of a wafer by forming a porous silicon layer on the surface of a silicon substrate and a method of gettering impurities. Also contemplated by the invention are methods of surface passivation, forming novel solar cell structures, and hydrogen passivation. 2 figs.

  4. Solar Rights

    Broader source: Energy.gov [DOE]

    According to state law, effective July 1, 2008, community associations in Virginia generally may not prohibit a homeowner from installing or using a solar energy collection device on their property...

  5. Physics of the Solar Cycle : New Views

    E-Print Network [OSTI]

    Hiremath, K M

    2009-01-01T23:59:59.000Z

    Two well known turbulent dynamo and MHD oscillation mechanisms are critically examined and fundamental difficulties are presented. Following new ideas on the genesis of the solar cycle and activity phenomena are presented. Inevitability of most likely existence of a combined steady poloidal and toroidal magnetic field structure in the solar interior. Owing to suitable steady poloidal field structure, Alfven wave perturbations of long periods (~ 22 yrs) that excite in the solar core travel first to the poles in both the hemispheres and later reach the equator. While traveling towards the surface, Alfven wave perturbations along the weak poloidal field structure in turn perturb the embedded strong toroidal field structure producing sunspots, especially in the convective envelope, that travel to the surface due to buoyancy along isorotational contours. With realistic density structure of the solar interior, computation of Alfven wave travel times along different field lines of the poloidal field structure (Hirem...

  6. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    for Reno, Nevada . . . . . (Q) Solar Data for China Lake/using Nominal Solar Profiles China Lake/Inyokern ANGLE OFStations - China Lake, Edwards Monthly Latitude: Jan SOLAR

  7. Solar Thermal Powered Evaporators

    E-Print Network [OSTI]

    Moe, Christian Robert

    2015-01-01T23:59:59.000Z

    and C. Y. Zhao, "A review of solar collectors and thermalenergy storage in solar thermal applications," Appliedon photovoltaic/thermal hybrid solar technology," Applied

  8. Solar forecasting review

    E-Print Network [OSTI]

    Inman, Richard Headen

    2012-01-01T23:59:59.000Z

    Figure 6.3: Birds-eye view of solar array deployment siteBirds-eye 7. Birds-eye view of of solar solar array array

  9. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    2008, uses concentrated solar power to split water. Figurethe main reason the potential for solar power is boundless.a clean energy source, solar power is inexhaustible, fairly

  10. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    for Daily Solar Radiation Data. Proceedings of the 1977from total horizontal radiation data, they both suffer froma. SOLAR RADIATION Solar radiation data provide a measure of

  11. Solar forecasting review

    E-Print Network [OSTI]

    Inman, Richard Headen

    2012-01-01T23:59:59.000Z

    2.1.2 European Solar Radiation Atlas (ESRA)for supplementing solar radiation network data, FinalEstimating incident solar radiation at the surface from geo-

  12. Solar forecasting review

    E-Print Network [OSTI]

    Inman, Richard Headen

    2012-01-01T23:59:59.000Z

    2.1.2 European Solar Radiation Atlas (ESRA)2.4 Evaluation of Solar Forecasting . . . . . . . . .2.4.1 Solar Variability . . . . . . . . . . . . .

  13. Residential Solar Valuation Rates

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

    Residential Solar Valuation Rates Karl R. Rbago Rbago Energy LLC 1 The Ideal Residential Solar Tariff Fair to the utility and non-solar customers Fair compensation to...

  14. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    Solar Energy Laboratory 1303 Engineering Research Building UniversitySolar Energy Laboratory 1303 Engineering Research laboratory UniversitySolar Energy Group, Energy and Lawrence Berkeley Laboratory University

  15. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    Nov, 2005). Chapter 4 Hybrid solar cells with 3-dimensionalinorganic nanocrystal solar cells 5.1 Introduction In recentoperation of organic based solar cells and distinguish them

  16. Sandia National Laboratories: solar

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

    solar Molten Salt Test Loop Commissioning On October 10, 2012, in Concentrating Solar Power, EC, Energy, News, News & Events, Renewable Energy, Solar The Molten Salt Test Loop...

  17. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    Data for San Vicente Reservoir (l) Solar Data for BarrettDiego Monthly Solar Data, Barrett Reservoir Latitude: Janmonth. (L) SOLAR DATA FOR BARRETT RESERVOIR Nearby Climate

  18. Department of Solar Energy & Environmental Physics Scientific Publications, 2006-2007.

    E-Print Network [OSTI]

    Prigozhin, Leonid

    Department of Solar Energy & Environmental Physics Scientific Publications, 2006-2007. Albu:185-198. Faiman, D., Raviv, D. and Rosenstreich, R. (2007), Using solar energy to arrest the increasing rate of fossil-fuel consumption: The southwestern states of the USA as case studies. Energy Policy, 35

  19. Author's personal copy Maximizing the solar to H2 energy conversion efficiency

    E-Print Network [OSTI]

    Pilon, Laurent

    to thermochemical or electrolytic hydrogen production technologies [13]. However, solar to hydrogen energyAuthor's personal copy Maximizing the solar to H2 energy conversion efficiency of outdoor, Cockrell School of Engineering, The University of Texas at Austin Austin, TX 78712, USA b Mechanical

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

    E-Print Network [OSTI]

    Lummerzheim, Dirk

    in the solar wind couple to the magnetopause boundary and energy and momentum are transferred to, and propagateEffect of solar wind pressure pulses on the size and strength of the auroral oval A. Boudouridis, E, Alaska, USA Received 11 March 2002; revised 14 June 2002; accepted 8 August 2002; published 11 March 2003

  1. Heating of the Solar Wind Beyond 1 AU by Turbulent Dissipation

    E-Print Network [OSTI]

    Oughton, Sean

    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

  2. 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

  3. Vestas USA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTown of Ladoga,planningFlowmeter Logging Jump to: navigation,Vestas USA Place:

  4. California Solar Initiative- Solar Thermal Program

    Broader source: Energy.gov [DOE]

    Originally restricted to just solar water heaters, the prorgam was expanded byCPUC Decision 13-02-018in February 2013 to include other solar thermal technologies, including solar process heatin...

  5. Diameter Dependence of Vertically-Aligned Single-Walled Carbon Nanotubes for Use as Counter Electrodes in Dye Sensitized Solar Cells

    E-Print Network [OSTI]

    for Use as Counter Electrodes in Dye Sensitized Solar Cells Ronald Hobson,1,2,3 Kehang Cui,1 Chiba TakaakiJapan Program, Rice University, Houston, Texas, U.S.A. Dye sensitized solar cells (DSSCs) are electrochemical. In comparison to conventional Si-based solar cells, the manufacturing cost of DSSCs are substantially low

  6. China Solar Clean Energy Solutions Inc formerly Deli Solar USA Inc | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovation inOpenadd:Information ChinaChina New EnergyEnergy

  7. Solar Decathlon

    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 DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary ofSmallConfidential,2 Solar Background Document 2Solar

  8. Concentrating Solar Power

    SciTech Connect (OSTI)

    Not Available

    2008-09-01T23:59:59.000Z

    Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

  9. Solar Easements & Local Option Solar Rights Laws

    Broader source: Energy.gov [DOE]

    Utah's solar easement provisions are similar to easement provisions in many other states. Parties may voluntarily enter into written solar easement contracts that are enforceable by law. An...

  10. Presolar Silicate Grains: Constraints on Solar System Processes and

    E-Print Network [OSTI]

    Floss, Christine

    Presolar Silicate Grains: Constraints on Solar System Processes and Stellar Nucleosynthesis 63130, USA. (floss@wustl.edu) Presolar silicates are among the most abundant type of stardust and have. This is particularly true for presolar silicates, which are more susceptible to secondary processing than other, more

  11. CUTTING SOLAR RED TAPECUTTING SOLAR RED TAPE Evergreen State Solar PartnershipEvergreen State Solar Partnership

    E-Print Network [OSTI]

    CUTTING SOLAR RED TAPECUTTING SOLAR RED TAPE Evergreen State Solar PartnershipEvergreen State Solar Partnership Rooftop Solar Challenge 1 Sunshot #12;WASHINGTON PV CONTEXTWASHINGTON PV CONTEXT 285 cities, 39 Installations happen where process is easier #12;EVERGREEN STATE SOLAR PARTNERSHIP Commerce NWSEEDEdmonds

  12. 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]

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

    2014-01-01T23:59:59.000Z

    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 $rwind streams from the Helios and Ulysses spacecraft. We find that $Q_{\\mathrm{flow}}$ exceeds $Q_{\\alpha}$ at $r < 1\\,\\mathrm{AU}$, $Q_{...

  13. Reply to 'Influence of cosmic ray variability on the monsoon rainfall and temperature': a false-positive in the field of solar-terrestrial research

    E-Print Network [OSTI]

    Laken, Benjamin A

    2015-01-01T23:59:59.000Z

    A litany of research has been published claiming strong solar influences on the Earth's weather and climate. Much of this work includes documented errors and false-positives, yet is still frequently used to substantiate arguments of global warming denial. This manuscript reports on a recent study by Badruddin & Aslam (2014), hereafter BA14, which claimed a highly significant ($p=1.4\\times10^{-5}$) relationship between extremes in the intensity of the Indian monsoon and the cosmic ray flux. They further speculated that the relationship they observed may apply across the entire tropical and sub-tropical belt, and be of global importance. However, their statistical analysis---and consequently their conclusions---were wrong. Specifically, their error resulted from an assumption that their data's underlying distribution was Gaussian. But, as demonstrated in this work, their data closely follow an ergodic chaotic distribution biased towards extreme values. From a probability density function, calculated using a...

  14. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Modelling Concentrating Solar Power

    E-Print Network [OSTI]

    ;9 Production Cost Modeling Objective: Balance generation and load, every hour, at least cost · Natural-gas Solar Power Solar Energy Solar Field Steam Turbine Generator #12;13 Concentrating Solar Power with Thermal Energy StorageSolar Energy Solar Field Storage Tank Steam Turbine Generator #12;14 Another

  15. UMORE PARK -INTEGRATING SOLAR Overview, Solar Optimization & Technologies, & Recommendations

    E-Print Network [OSTI]

    Netoff, Theoden

    : Introduction 3 UMore Park Overview 4 Solar Optimization 7 Passive Solar 8 Solar Technologies 10 District Solar research and development of renewable resource technologies. Integrating passive design techniques as wellUMORE PARK - INTEGRATING SOLAR Overview, Solar Optimization & Technologies, & Recommendations

  16. Central solar energy receiver

    DOE Patents [OSTI]

    Drost, M. Kevin (Richland, WA)

    1983-01-01T23:59:59.000Z

    An improved tower-mounted central solar energy receiver for heating air drawn through the receiver by an induced draft fan. A number of vertically oriented, energy absorbing, fin-shaped slats are radially arranged in a number of concentric cylindrical arrays on top of the tower coaxially surrounding a pipe having air holes through which the fan draws air which is heated by the slats which receive the solar radiation from a heliostat field. A number of vertically oriented and wedge-shaped columns are radially arranged in a number of concentric cylindrical clusters surrounding the slat arrays. The columns have two mirror-reflecting sides to reflect radiation into the slat arrays and one energy absorbing side to reduce reradiation and reflection from the slat arrays.

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

    E-Print Network [OSTI]

    Gao, Ye

    2012-01-01T23:59:59.000Z

    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

  18. Heterogeneous Structure Around the Jemez Volcanic Field, New...

    Open Energy Info (EERE)

    Heterogeneous Structure Around the Jemez Volcanic Field, New Mexico, USA, as Inferred from the Envelope Inversion of Active-Experiment Seismic Data Jump to: navigation, search...

  19. 1Mohammed Atiquzzaman, University of Oklahoma, USA.

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    1Mohammed Atiquzzaman, University of Oklahoma, USA. Presentation at Tohoku University, Japan Aug 6 of Computer Science University of Oklahoma. Email: atiq@ieee.org Web: www.cs.ou.edu/~atiq Tohoku University, Sendai, Japan. Aug 6, 2002. #12;2Mohammed Atiquzzaman, University of Oklahoma, USA. Presentation

  20. 1Mohammed Atiquzzaman, University of Oklahoma, USA.

    E-Print Network [OSTI]

    Atiquzzaman, Mohammed

    1Mohammed Atiquzzaman, University of Oklahoma, USA. Presentation at Tohoku University, Japan Aug 6 of Computer Science University of Oklahoma. Email: atiq@ieee.org Web: www.cs.ou.edu/~atiq Presentation at Tohoku University, Sendai, Japan. Aug 6, 2002. #12;2Mohammed Atiquzzaman, University of Oklahoma, USA

  1. LEAD COMMISSIONER DRAFT GUIDEBOOK NEW SOLAR HOMES PARTNERSHIP

    E-Print Network [OSTI]

    , incentive, CECPV Calculator, HERS Rater, field verification, Program Administrator, shading, module, inverter, plan check Nguyen, LeQuyen, Farakh Nasim. 2013. New Solar Homes Partnership Guidebook (Sixth

  2. Solar Impulse's Solar-Powered Plane

    SciTech Connect (OSTI)

    Moniz, Ernest; Piccard, Bertrand; Reicher, Dan

    2013-07-08T23:59:59.000Z

    Solar Impulse lands in Washington, DC at Washington Dulles International Airport as part of its journey across the United States. Secretary Ernest Moniz speaks about how advancements like those at the Department of Energy are leading the way for innovations like the solar-powered plane. Footage of the solar-powered plane courtesy of Solar Impulse.

  3. Solar Impulse's Solar-Powered Plane

    ScienceCinema (OSTI)

    Moniz, Ernest; Piccard, Bertrand; Reicher, Dan

    2014-01-07T23:59:59.000Z

    Solar Impulse lands in Washington, DC at Washington Dulles International Airport as part of its journey across the United States. Secretary Ernest Moniz speaks about how advancements like those at the Department of Energy are leading the way for innovations like the solar-powered plane. Footage of the solar-powered plane courtesy of Solar Impulse.

  4. EA-1798: Abengoa Solar's Mojave Solar Project near Barstow, CA...

    Office of Environmental Management (EM)

    Abengoa Solar's Mojave Solar Project near Barstow, CA July 1, 2011 EA-1798: Final Environmental Assessment Loan Guarantee to Mojave Solar, LLC for the Abengoa Mojave Solar...

  5. Portland, Oregon: Solar in Action (Brochure), Solar America Cities...

    Energy Savers [EERE]

    Portland, Oregon: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Portland, Oregon: Solar in Action (Brochure), Solar America Cities,...

  6. SOLAR ENERGY FOR ACADEMIC INSTITUTIONS Solar Suitability Assessment

    E-Print Network [OSTI]

    Brownstone, Rob

    SOLAR ENERGY FOR ACADEMIC INSTITUTIONS Solar Suitability Assessment of Dalhousie University..................................................................................................................... 1 2 Solar Resource Assessment ........................................................................................... 2 2.1 Solar Radiation

  7. China Glass Solar aka CG Solar formerly Weihai Bluestar Terra...

    Open Energy Info (EERE)

    China Glass Solar aka CG Solar formerly Weihai Bluestar Terra Photovoltaic Co Ltd Jump to: navigation, search Name: China Glass Solar (aka CG Solar, formerly Weihai Bluestar Terra...

  8. Ann Arbor, Michigan: Solar in Action (Brochure), Solar America...

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

    Ann Arbor, Michigan: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Ann Arbor, Michigan: Solar in Action (Brochure), Solar America...

  9. Berkeley, California: Solar in Action (Brochure), Solar America...

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

    Berkeley, California: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Berkeley, California: Solar in Action (Brochure), Solar America...

  10. Austin, Texas: Solar in Action (Brochure), Solar America Cities...

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

    Austin, Texas: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Austin, Texas: Solar in Action (Brochure), Solar America Cities, Energy...

  11. Knoxville, Tennessee: Solar in Action (Brochure), Solar America...

    Energy Savers [EERE]

    Knoxville, Tennessee: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Knoxville, Tennessee: Solar in Action (Brochure), Solar America...

  12. Seattle, Washington: Solar in Action (Brochure), Solar America...

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

    Seattle, Washington: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Seattle, Washington: Solar in Action (Brochure), Solar America...

  13. The Astrophysical Journal Supplement Series, 183:142155, 2009 July doi:10.1088/0067-0049/183/1/142 C 2009. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Share, Gerald

    part of the gamma-ray emission results when flare-accelerated ions interact with the ambient solar.1088/0067-0049/183/1/142 C 2009. The American Astronomical Society. All rights reserved. Printed in the U.S.A. NUCLEAR GAMMA-RAY 20; published 2009 June 19 ABSTRACT Analyses of gamma-ray line emission in solar flares have provided

  14. The Astrophysical Journal, 757:92 (6pp), 2012 September 20 doi:10.1088/0004-637X/757/1/92 C 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    . INTRODUCTION Sporadic energy releases on the Sun can accelerate solar ener- getic particles (SEPs. The American Astronomical Society. All rights reserved. Printed in the U.S.A. OCCURRENCE OF EXTREME SOLAR-90014 Oulu, Finland; ilya.usoskin@oulu.fi 2 Ioffe Physical-Technical Institute of RAS, 194021 St

  15. The Astrophysical Journal, 765:44 (12pp), 2013 March 1 doi:10.1088/0004-637X/765/1/44 C 2013. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Howard, Tim

    Street Suite 300, Boulder, CO 80302, USA; deforest@boulder.swri.edu 2 National Solar Observatory, Sunspot The solar corona and heliosphere are visible via sunlight that is Thomson-scattered off free electrons linear polarization of this scattered light parallel and perpendicular to the plane of scatter

  16. Alfv'en Wave Solitons and Solar Intermediate Drift Bursts

    E-Print Network [OSTI]

    Guedel, Manuel

    propagate at velocities of the order of the Alfv'en velocity in a direction inclined to the magnetic field to be magnetized, as e.g. the solar atmosphere, the solar and stellar coronae, the solar wind, accretion disks'en speed v A , a fundamental plasma parameter depending on the gas and the magnetic pressures. It has been

  17. The Solar Dynamo I M.R.E.Proctor

    E-Print Network [OSTI]

    1 The Solar Dynamo I M.R.E.Proctor DAMTP, University of Cambridge Leeds, 6 September 2005 #12;2 Indicators of the Solar Cycle: Sunspots Cyclical behaviour of the Sun is shown by the evolution of sunspots magnetic field (~3000G) Axes of bipolar spots tilted by ~4 deg with respect to equator Part of the solar

  18. A new parabolic trough solar collector P. Kohlenbach1

    E-Print Network [OSTI]

    A new parabolic trough solar collector P. Kohlenbach1 , S. McEvoy1 , W. Stein1 , A. Burton1 , K) power generation system. The parabolic trough collectors have been installed in the National Solar and power generation (CHP), CSIRO has built a solar thermal parabolic trough collector field which

  19. Upcoming H2USA Workshop: Hydrogen Fueling Station Component Listings...

    Office of Environmental Management (EM)

    H2USA Workshop: Hydrogen Fueling Station Component Listings Upcoming H2USA Workshop: Hydrogen Fueling Station Component Listings April 21, 2015 - 1:04pm Addthis H2USA will host an...

  20. Solar Neutrinos

    E-Print Network [OSTI]

    R. G. H. Robertson

    2006-02-05T23:59:59.000Z

    Experimental work with solar neutrinos has illuminated the properties of neutrinos and tested models of how the sun produces its energy. Three experiments continue to take data, and at least seven are in various stages of planning or construction. In this review, the current experimental status is summarized, and future directions explored with a focus on the effects of a non-zero theta-13 and the interesting possibility of directly testing the luminosity constraint. Such a confrontation at the few-percent level would provide a prediction of the solar irradiance tens of thousands of years in the future for comparison with the present-day irradiance. A model-independent analysis of existing low-energy data shows good agreement between the neutrino and electromagnetic luminosities at the +/- 20 % level.

  1. Sandia National Laboratories: Solar Energy

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

    Test Facility NSTTF Nuclear Energy photovoltaic Photovoltaics PV Renewable Energy solar Solar Energy solar power Solar Research Solid-State Lighting SSLS Connect Contact Us RSS...

  2. Solar collector

    SciTech Connect (OSTI)

    Dostrovsky, I.

    1981-02-10T23:59:59.000Z

    A solar collector unit comprises a body of rigid thermally insulating material having a surface in the shape of about half a cylindrical parabola, the parabolic surface being provided with a reflective surface, a conduit being positioned with its long axis in the median plane of the parabola, said conduit serving as conduit for the heat-exchange medium, the surface of said conduit facing the parabolic surface being a selective surface, a transparent cover being provided on top of the device.

  3. Uncertainties in Achieving Energy Savings from HVAC Maintenance Measures in the Field

    E-Print Network [OSTI]

    California at Davis, University of

    Uncertainties in Achieving Energy Savings from HVAC Maintenance Measures in the Field Kristin Group, Davis, CA, USA 4 Southern California Edison, Irwindale, CA, USA ABSTRACT HVAC maintenance utilities across the nation to include HVAC maintenance measures in energy efficiency programs

  4. area nevada usa: Topics by E-print Network

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

    Position Description Internship Program Goal: Bell Nursery USA, LLC - is a wholesale grower of quality bedding plants, pot. Intern Project: 12;Bell Nursery USA, LLC The...

  5. USA Science and Engineering Festival: Inspiring and Educating...

    Energy Savers [EERE]

    USA Science and Engineering Festival: Inspiring and Educating the Clean Energy Workforce of Tomorrow USA Science and Engineering Festival: Inspiring and Educating the Clean Energy...

  6. MOU signed between CIAE and Jefferson National Lab, USA. (China...

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

    https:www.jlab.orgnewsarticlesmou-signed-between-ciae-and-jefferson-national-lab-usa-china-nuclear-industry-news-ge... MOU signed between CIAE and Jefferson National Lab, USA....

  7. alexandria virginia usa: Topics by E-print Network

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

    Now at University of Wisconsin, USA. Permanent address: Northeastern University, Department of Physics, Boston, 02115 MA, USA. Now at NIKHEF P.O.B. 41882 Dutz, Hartmut 8...

  8. Everything Under the Sun: A Review of Solar Neutrino

    E-Print Network [OSTI]

    Gann, G D Orebi

    2015-01-01T23:59:59.000Z

    Solar neutrinos offer a unique opportunity to study the interaction of neutrinos with matter, a sensitive search for potential new physics effects, and a probe of solar structure and solar system formation. This paper describes the broad physics program addressed by solar neutrino studies, presents the current suite of experiments programs, and describes several potential future detectors that could address the open questions in this field. This paper is a summary of a talk presented at the Neutrino 2014 conference in Boston.

  9. Solar Dish Project

    SciTech Connect (OSTI)

    Robert F. Boehm

    2004-06-06T23:59:59.000Z

    (Original wording, now somewhat outdated.) The Nevada Solar Dish Project is designed to deploy at least 1 MW of dish-based, field validation power generation systems in a mini-power plant near Las Vegas, Nevada, as a transitional precursor to the full commercialization of the technology. This will occur over a period of about three years, from 2001 through 2004. The statement of work defines activities that the University of Nevada Las Vegas (UNLV) will provide by establishing a test site for two dish/Stirling systems on the UNLV campus and providing operation, test and training, and education in support of the project.

  10. Solar Innovator | Alta Devices

    ScienceCinema (OSTI)

    Mattos, Laila; Le, Minh

    2013-05-29T23:59:59.000Z

    Selected to participate in the Energy Department's SunShot Initiative, Alta Devices produces solar cells that convert sunlight into electricity at world record-breaking levels of efficiency. Through its innovative solar technology Alta is helping bring down the cost of solar. Learn more about the Energy Department's efforts to advance solar technology at energy.gov/solar .

  11. Nuclear Magnetohydrodynamic EMP, Solar Storms, and Substorms

    E-Print Network [OSTI]

    Rabinowitz, M; Glytsis, E N; Cokkinides, G J; Rabinowitz, Mario; Glytsis, Elias N.; Cokkinides, George J.

    1992-01-01T23:59:59.000Z

    In addition to a fast electromagnetic pulse (EMP), a high altitude nuclear burst produces a relatively slow magnetohydrodynarnic EMP (MHD EMP), whose effects are like those from solar storm geomagnetically induced currents (SS GIC). The MHD EMP electric field E 10^-2 V/m and lasts >10^3 sec. Although the solar storm electric field is lower than MHD EMP, the solar storm effects are generally greater due to their much longer duration. Substorms produce much smaller effects than SS GIC, but occur much more frequently. This paper describes the physics of such geomagnetic disturbances and analyzes their effects.

  12. Nuclear Magnetohydrodynamic EMP, Solar Storms, and Substorms

    E-Print Network [OSTI]

    Mario Rabinowitz; A. P. Sakis Meliopoulos; Elias N. Glytsis; George J. Cokkinides

    2003-07-12T23:59:59.000Z

    In addition to a fast electromagnetic pulse (EMP), a high altitude nuclear burst produces a relatively slow magnetohydrodynarnic EMP (MHD EMP), whose effects are like those from solar storm geomagnetically induced currents (SS GIC). The MHD EMP electric field E 10^-2 V/m and lasts >10^3 sec. Although the solar storm electric field is lower than MHD EMP, the solar storm effects are generally greater due to their much longer duration. Substorms produce much smaller effects than SS GIC, but occur much more frequently. This paper describes the physics of such geomagnetic disturbances and analyzes their effects.

  13. Solar neutrinos and the solar composition problem

    E-Print Network [OSTI]

    Carlos Pena-Garay; Aldo Serenelli

    2008-11-16T23:59:59.000Z

    Standard solar models (SSM) are facing nowadays a new puzzle: the solar composition problem. New determinations of solar metal abundances lead SSM calculations to conflict with helioseismological measurements, showing discrepancies that extend from the convection zone to the solar core and can not be easily assigned to deficiencies in the modelling of the solar convection zone. We present updated solar neutrino fluxes and uncertainties for two SSM with high (old) and low (new) solar metallicity determinations. The uncertainties in iron and carbon abundances are the largest contribution to the uncertainties of the solar neutrino fluxes. The uncertainty on the ^14N+p -> ^15O+g rate is the largest of the non-composition uncertainties to the CNO neutrino fluxes. We propose an independent method to help identify which SSM is the correct one. Present neutrino data can not distinguish the solar neutrino predictions of both models but ongoing measurements can help to solve the puzzle.

  14. Does solar structure vary with solar magnetic activity?

    E-Print Network [OSTI]

    Sarbani Basu; Anna Mandel

    2004-11-15T23:59:59.000Z

    We present evidence that solar structure changes with changes in solar activity. We find that the adiabatic index, Gamma_1, changes near the second helium ionization, i.e., at a depth of about 0.98 R_sun. We believe that this change is a result of the change in the effective equation of state caused by magnetic fields. Inversions should be able to detect the changes in Gamma_1 if mode sets with reliable and precise high-degree modes are available.

  15. High Field Magnet R&D in the USA

    E-Print Network [OSTI]

    Gourlay, S.A.

    2011-01-01T23:59:59.000Z

    beam instmmentation, accelerator physics shIdies, and designShldy in terms of accelerator physics and magnet design.magnet technology and accelerator physics and approach the

  16. Heterogeneous Structure Around the Jemez Volcanic Field, New Mexico, USA,

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG|InformationInformationHensley,Hershey,Hessen Energie GmbH

  17. Solar Technology Center

    SciTech Connect (OSTI)

    Boehm, Bob

    2011-04-27T23:59:59.000Z

    The Department of Energy, Golden Field Office, awarded a grant to the UNLV Research Foundation (UNLVRF) on August 1, 2005 to develop a solar and renewable energy information center. The Solar Technology Center (STC) is to be developed in two phases, with Phase I consisting of all activities necessary to determine feasibility of the project, including design and engineering, identification of land access issues and permitting necessary to determine project viability without permanently disturbing the project site, and completion of a National Environmental Policy Act (NEPA) Environmental Assessment. Phase II is the installation of infrastructure and related structures, which leads to commencement of operations of the STC. The STC is located in the Boulder City designated 3,000-acre Eldorado Valley Energy Zone, approximately 15 miles southwest of downtown Boulder City and fronting on Eldorado Valley Drive. The 33-acre vacant parcel has been leased to the Nevada Test Site Development Corporation (NTSDC) by Boulder City to accommodate a planned facility that will be synergistic with present and planned energy projects in the Zone. The parcel will be developed by the UNLVRF. The NTSDC is the economic development arm of the UNLVRF. UNLVRF will be the entity responsible for overseeing the lease and the development project to assure compliance with the lease stipulations established by Boulder City. The STC will be operated and maintained by University of Nevada, Las Vegas (UNLV) and its Center for Energy Research (UNLV-CER). Land parcels in the Eldorado Valley Energy Zone near the 33-acre lease are committed to the construction and operation of an electrical grid connected solar energy production facility. Other projects supporting renewable and solar technologies have been developed within the energy zone, with several more developments in the horizon.

  18. Solar Power

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our Instagram Secretary Moniz9MorganYou areInnovationPriorityImpulseSolarThermal

  19. Solar Blog

    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 JC3 RSS September 9,AwardGradsSites Pending Transfer toSocial MediaSoilSolar Access

  20. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    of organic based solar cells and distinguish them from theirof nanocrystal-based solar cells. No one approach orNov, 2005). Chapter 4 Hybrid solar cells with 3-dimensional

  1. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    Nov, 2005). Chapter 4 Hybrid solar cells with 3-dimensional5 All-inorganic nanocrystal solar cells 5.1 Introduction Inoperation of organic based solar cells and distinguish them

  2. Solar Energy Entrepreneurs

    E-Print Network [OSTI]

    Rubloff, Gary W.

    Solar Energy Entrepreneurs Meeting MD, DC, DE, VA Region May 31, 2012 #12;Solar Energy Entrepreneurs Meeting MD, DC, DE, VA Region Meeting Objectives growth Make our region an increasingly stronger hub for solar power You

  3. Solar | Department of Energy

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

    Department of Energy Using Passive Solar Design to Save Money and Energy You can harness solar energy to heat and cool your home through passive solar design. October 10, 2014...

  4. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    and William A. Beckman, Solar Energy Thermal Processes (JohnWiley, Inc" New York. Solar Energy Thermal Processes. John1977): SOLCOST, Solar Energy Design Program for Non-Thermal

  5. JEA- Solar Incentive Program

    Broader source: Energy.gov [DOE]

    The JEA Solar Incentive Program provides rebates to JEA's residential customers who install new and retrofit solar hot water heaters on their homes. The rebate is worth $800 for new solar thermal...

  6. IntrAst1 (Petrovay) Chracteristics and origon of the Solar System SOLAR SYSTEM BODIES

    E-Print Network [OSTI]

    Petrovay, Kristf

    ) Chracteristics and origon of the Solar System CHEMICAL DIFFERENTIATION IN THE SOLAR SYSTEM Chemical choose from theoretical models, based on empirical constraints. Constraints: > surface, gravity field mostly consist of ice. beyond r 30 AU methane ice also persists. Volatiles: gas or liquid at room

  7. USA oilgas production cost : recent changes

    E-Print Network [OSTI]

    Adelman, Morris Albert

    1991-01-01T23:59:59.000Z

    During 1984-1989, oil development investment cost in the USA fell, but only because of lower activity. The whole cost curve shifted unfavorably (leftward). In contrast, natural gas cost substantially decreased, the curve ...

  8. USA Manufacturing: Proposed Penalty (2013-CE-5336)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that USA Manufacturing failed to certify walk-in cooler or freezer components as compliant with the energy conservation standards.

  9. Hisense USA: Proposed Penalty (2010-CE-1211)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Hisense USA Corp. failed to certify a variety of residential refrigerators, refrigerator-freezers, and freezers as compliant with the applicable energy conservation standards.

  10. Bell Nursery USA, LLC Internship Position Description

    E-Print Network [OSTI]

    Bell Nursery USA, LLC Internship Position Description Internship Program Goal as a grower. Grower/Internship position : It is our goal at Bell to provide a rewarding and educational experience to the student/intern. The internship position

  11. Solar Phys (2009) 256: 345363 DOI 10.1007/s11207-009-9345-6

    E-Print Network [OSTI]

    California at Berkeley, University of

    2009-01-01T23:59:59.000Z

    Solar Phys (2009) 256: 345363 DOI 10.1007/s11207-009-9345-6 STEREO SCIENCE RESULTS AT SOLAR MINIMUM Effects of the Weak Polar Fields of Solar Cycle 23: Investigation Using OMNI for the STEREO(s) 2009. This article is published with open access at Springerlink.com Abstract The current solar cycle

  12. Solar cycle changes in coronal holes and space weather cycles J. G. Luhmann,1

    E-Print Network [OSTI]

    California at Berkeley, University of

    Solar cycle changes in coronal holes and space weather cycles J. G. Luhmann,1 Y. Li,1 C. N. Arge,2-heliolatitude solar wind over approximately the last three solar cycles. Related key parameters like interplanetary explain solar magnetic field control of long-term interplanetary variations. In particular, the enduring

  13. Energy-based Control of a Distributed Solar Collector Tor A. Johansena

    E-Print Network [OSTI]

    Johansen, Tor Arne

    Energy-based Control of a Distributed Solar Collector Field Tor A. Johansena Camilla Storaaa that the primary energy source, solar radiation, cannot be manipulated. The distributed solar collector eld may, Norway. Model-based control of the outlet temperature of a distributed solar col- lector eld is studied

  14. Plasmonic Enhancement of Dye-Sensitized Solar Cells Using Core-Shell-Shell Nanostructures

    E-Print Network [OSTI]

    Plasmonic Enhancement of Dye-Sensitized Solar Cells Using Core- Shell-Shell Nanostructures Stafford and demonstrate near-field plasmonic enhancement of dye-sensitized solar cells (DSSCs) incorporating them being researched, dye-sensitized solar cells (DSSCs) are a promising alternative to traditional solar

  15. Dye-Sensitized Solar Cells DOI: 10.1002/anie.201300070

    E-Print Network [OSTI]

    Dye-Sensitized Solar Cells DOI: 10.1002/anie.201300070 Stable Dye-Sensitized Solar Cell,* and Udo Bach* Dye-sensitized solar cells (DSCs) can be fabricated from low- cost components with simple fields, including renewable energy research focusing on DSCs and solar-driven hydrogen generation from

  16. TRIPLE-JUNCTION A-SI SOLAR CELLS WITH HEAVILY DOPED THIN INTERFACE LAYERS AT THE TUNNEL W. Wang, H. Povolny, W. Du, X.B. Liao and X. Deng

    E-Print Network [OSTI]

    Deng, Xunming

    TRIPLE-JUNCTION A-SI SOLAR CELLS WITH HEAVILY DOPED THIN INTERFACE LAYERS AT THE TUNNEL JUNCTIONS W of Toledo, Toledo, OH 43606 USA ABSTRACT Triple-junction a-Si based solar cells, having a structure of SS cells and between the middle and bottom component cells on the efficiency of triple- junction solar

  17. SOLAR-BLIND PYROMETRIC TEMPERATURE MEASUREMENT UNDER CONCENTRATED SOLAR

    E-Print Network [OSTI]

    SOLAR-BLIND PYROMETRIC TEMPERATURE MEASUREMENT UNDER CONCENTRATED SOLAR IRRADIATION Markus Pfnder1 temperature, pyrometric temperature measurement, solar-blind ------------------------------------ 1 #12-called solar-blind spectral measurement ranges, where the contribution of reflected solar radiation

  18. Connectable solar air collectors Solar Energy Centre Denmark

    E-Print Network [OSTI]

    Connectable solar air collectors Solar Energy Centre Denmark Danish Technological Institute SEC-R-22 #12;Connectable solar air collectors Sren stergaard Jensen Miroslav Bosanac Solar Energy Centre within the project "Connectable solar air collector/PVT collector" (Sammenkoblelig luftsolfanger

  19. Solar Industry At Work: Streamlining Home Solar Installation...

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

    Solar Industry At Work: Streamlining Home Solar Installation Solar Industry At Work: Streamlining Home Solar Installation June 12, 2012 - 11:59am Addthis Sunrun is a home solar...

  20. Solar skylight

    DOE Patents [OSTI]

    Adamson, James C. (Osprey La., Rumson, NJ 07760)

    1984-01-01T23:59:59.000Z

    A reflective shutter rotates within a skylight housing in such a fashion as to control solar energy thereby providing a combination of heating, lighting, and ventilation. The skylight housing has three faces: a glazed southern face, a glazed northern face, and an open downwardly oriented face to the interior of the structure. Counter-weighted pivot arms support the shutter at either end causing the center of rotation to pass through the center of gravity. The shutter has three basic positions: In the first position, during the winter day, the shutter closes off the northern face, allowing solar energy to enter directly into the supporting structure providing heat gain and daylighting. In the second position, during the winter night, the shutter closes off the open face to the interior, providing insulation between the structure and the skylight housing. In the third position, during the non-heating season, the shutter closes off the southern face blocking unwanted heat gain but allowing diffuse northern light to penetrate for daylighting. In this last position, a means is provided for ventilating by natural convection. The apparatus can be operated either manually or by motor.

  1. Your Solar Home

    Broader source: Energy.gov [DOE]

    Solar Schoolhouse Education supplement for the Sacramento Bee to introduce solar to elementary school children and introduce the design and AD contest for local students.

  2. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    direct solar radiation onto the PEC cell and tracking isTracking Concentration.39 Figure 1.20: PV-RO System..42 Figure 1.21: Solar

  3. Scattering Solar Thermal Concentrators

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

    eere.energy.gov * energy.govsunshot DOEGO-102012-3669 * September 2012 MOTIVATION All thermal concentrating solar power (CSP) systems use solar tracking, which involves moving...

  4. Solar forecasting review

    E-Print Network [OSTI]

    Inman, Richard Headen

    2012-01-01T23:59:59.000Z

    modeling of solar steam- generators, solar water heating systems, Heating Ventilating and Air Conditioning (HVAC) systems, wind speed predictions, control in power generation systems,

  5. Solar Thermoelectric Energy Conversion

    Broader source: Energy.gov [DOE]

    Efficiencies of different types of solar thermoelectric generators were predicted using theoretical modeling and validated with measurements using constructed prototypes under different solar intensities

  6. Solar Energy Technologies Office

    Broader source: Energy.gov [DOE]

    In 2011, the Energy Department's Solar Energy Technologies Office (SETO) became the SunShot Initiative, a collaborative national effort that aggressively drives innovation to make solar energy...

  7. Sandia National Laboratories: Solar

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

    On April 1, 2014, in Energy, News, News & Events, Partnership, Photovoltaic, Renewable Energy, Solar, Solar Newsletter, Systems Analysis Geoff Klise (in Sandia's Earth Systems...

  8. Sandia National Laboratories: Solar

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

    Grid Integration, Infrastructure Security, News, News & Events, Photovoltaic, Renewable Energy, Solar, Solar Newsletter, Systems Engineering Matthew Reno, a Sandian and an...

  9. Solar | Department of Energy

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

    February 14, 2014 The Ivanpah Solar Energy Generating System was dedicated on Thursday, February 13, 2014. | Photo courtesy of MingassonGetty Images for Bechtel. Making Solar...

  10. Department of Energy - Solar

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

    307 en Using Passive Solar Design to Save Money and Energy http:energy.govenergysaverarticlesusing-passive-solar-design-save-money-and-energy

  11. Sandia National Laboratories: Solar

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

    Testing Center (PV RTC), Photovoltaic Systems Evaluation Laboratory (PSEL), Renewable Energy, Solar, Solar Newsletter, SunShot, Systems Analysis A research team that included...

  12. Solar radiation resource assessment

    SciTech Connect (OSTI)

    Not Available

    1990-11-01T23:59:59.000Z

    The bulletin discusses the following: introduction; Why is solar radiation resource assessment important Understanding the basics; the solar radiation resource assessment project; and future activities.

  13. Concentrated Solar Thermoelectric Power

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

    CONCENTRATING SOLAR POWER PROGRAM REVIEW 2013 Concentrated Solar Thermoelectric Power Principal Investigator: Prof. Gang Chen Massachusetts Institute of Technology Cambridge, MA...

  14. PV Solar Ready

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

    Boudra: This report presents guidelines for designing and building new houses that are Solar Ready. Following Solar Ready guidelines will streamline the process of equipping these...

  15. Sandia National Laboratories: solar

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

    Gas Sectors in the United States View all EC Publications Related Topics Concentrating Solar Power CRF CSP EFRC Energy Energy Efficiency Energy Security National Solar Thermal...

  16. Residential Solar Rights

    Broader source: Energy.gov [DOE]

    In 2007, New Jersey enacted legislation preventing homeowners associations from prohibiting the installation of solar collectors on certain types of residential properties. The term "solar...

  17. Solar in Cold, Cloudy Climates

    Broader source: Energy.gov [DOE]

    Presentation delivered by Chuck Marken during the 2009 Northeastern Solar Cities Conference Solar Survey session.

  18. Solar Easements & Local Option Solar Rights Laws

    Broader source: Energy.gov [DOE]

    The New York General City, Town, and Village codes also allow local zoning districts to make regulations regarding solar access that provide for "the accommodation of solar energy systems and...

  19. Philadelphia, Pennsylvania: Solar in Action (Brochure), Solar...

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

    October 2011 Solar in Action Philadelphia was designated by the U.S. Department of Energy (DOE) on March 28, 2008, as Solar America City. At that time, the city presented a...

  20. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells 93(10): 1728-1723,Solar Energy Materials and Solar Cells 92(8) 39. Sima, C.Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (

  1. Odyssey: a Solar System Mission

    E-Print Network [OSTI]

    B. Christophe; P. H. Andersen; J. D. Anderson; S. Asmar; Ph. Brio; O. Bertolami; R. Bingham; F. Bondu; Ph. Bouyer; S. Bremer; J. -M. Courty; H. Dittus; B. Foulon; P. Gil; U. Johann; J. F. Jordan; B. Kent; C. Lmmerzahl; A. Lvy; G. Mtris; O. Olsen; J. Pramos; J. D. Prestage; S. V. Progrebenko; E. Rasel; A. Rathke; S. Reynaud; B. Rievers; E. Samain; T. J. Sumner; S. Theil; P. Touboul; S. Turyshev; P. Vrancken; P. Wolf; N. Yu

    2008-01-18T23:59:59.000Z

    The Solar System Odyssey mission uses modern-day high-precision experimental techniques to test the laws of fundamental physics which determine dynamics in the solar system. It could lead to major discoveries by using demonstrated technologies. The mission proposes to perform a set of precision gravitation experiments from the vicinity of Earth to the outer Solar System. Its scientific objectives can be summarized as follows: i) test of the gravity force law in the Solar System up to and beyond the orbit of Saturn; ii) precise investigation of navigation anomalies at the fly-bys; iii) measurement of Eddington's parameter at occultations; iv) mapping of gravity field in the outer solar system and study of the Kuiper belt. To this aim, the Odyssey mission is built up on a main spacecraft, designed to fly up to 13 AU, with the following components: a) a high-precision accelerometer, with bias-rejection system, measuring the deviation of the trajectory from the geodesics; b) Ka-band transponders, as for Cassini, for a precise range and Doppler measurement up to 13 AU, with additional VLBI equipment; c) optional laser equipment, which would allow one to improve the range and Doppler measurement. In this baseline concept, the main spacecraft is designed to operate beyond the Saturn orbit, up to 13 AU. It experiences multiple planetary fly-bys at Earth, Mars or Venus, and Jupiter. The cruise and fly-by phases allow the mission to achieve its baseline scientific objectives (i) to iii) in the above list). In addition to this baseline concept, the Odyssey mission proposes the release of the Enigma radio-beacon at Saturn, allowing one to extend the deep space gravity test up to at least 50 AU, while achieving the scientific objective of a mapping of gravity field in the outer Solar System.

  2. REAL-TIME, WEB BASED ENERGY MONITORING SYSTEM FOR A SOLAR ACADEMIC BUILDING John H. Scofield

    E-Print Network [OSTI]

    Scofield, John H.

    Field Station incorporates passive solar cooling and active solar heating, maximizes ergonomicREAL-TIME, WEB BASED ENERGY MONITORING SYSTEM FOR A SOLAR ACADEMIC BUILDING John H. Scofield. The Leslie Shao-ming Sun Field Station is a 9,800 sf single- story building designed to help Jasper Ridge

  3. THE ASTROPHYSICAL JOURNAL, 504:9961001, 1998 September 10 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A.(

    E-Print Network [OSTI]

    Bahcall, John

    . All rights reserved. Printed in U.S.A.( SCREENING IN THERMONUCLEAR REACTION RATES IN THE SUN ANDREI V by ions and electrons on low-Z thermonuclear reac- tions in the Sun. We use a mean Ðeld formalism devoted to calculating more accurately the eects on the rates of solar fusion reactions of electrostatic

  4. The Astrophysical Journal, 663: L109L112, 2007 July 10 2007. The American Astronomical Society. All rights reserved. Printed in U.S.A.

    E-Print Network [OSTI]

    California at Berkeley, University of

    1 AU by the WIND 3D Plasma and Energetic Particle (3DP) instrument. For prompt events, where Society. All rights reserved. Printed in U.S.A. SOLAR FLARE ELECTRON SPECTRA AT THE SUN AND NEAR THE EARTH source population escapes to 1 AU and the rest produce the HXRs while losing all their energy

  5. The Astrophysical Journal, 501:L213L216, 1998 July 10 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A.

    E-Print Network [OSTI]

    . All rights reserved. Printed in U.S.A. ENERGY DISTRIBUTION OF HEATING PROCESSES IN THE QUIET SOLAR of the Sun. The emission measure is found to vary significantly in at least 85% of all the pixels within 42 the observed increases in emission measure and the derived temperature. Heating events have been found

  6. The Astrophysical Journal, 589:L117L121, 2003 June 1 2003. The American Astronomical Society. All rights reserved. Printed in U.S.A.

    E-Print Network [OSTI]

    Berdyugina, Svetlana

    Lockheed Martin Solar and Astrophysics Laboratory, Building 252, 3251 Hanover Street, Palo Alto, CA 94304. All rights reserved. Printed in U.S.A. THE OBSERVATION OF SUNSPOT LIGHT-BRIDGE STRUCTURE AND DYNAMICS May 1 ABSTRACT We present very high resolution multiwavelength images of a sunspot light bridge

  7. The Astrophysical Journal, 575:L41L45, 2002 August 10 2002. The American Astronomical Society. All rights reserved. Printed in U.S.A.

    E-Print Network [OSTI]

    Corbard, Thierry

    of the radial gradient of angular velocity in the subphotospheric layer using Michelson Doppler Imager (M with such a rotation profile. We show that despite being strong, near-surface radial shear effectively contributes only. All rights reserved. Printed in U.S.A. FLUX TRANSPORT SOLAR DYNAMOS WITH NEAR-SURFACE RADIAL SHEAR

  8. The Astrophysical Journal, 669: L53L56, 2007 November 1 2007. The American Astronomical Society. All rights reserved. Printed in U.S.A.

    E-Print Network [OSTI]

    Priest, Eric

    Society. All rights reserved. Printed in U.S.A. FREE MAGNETIC ENERGY IN SOLAR ACTIVE REGIONS ABOVE THE MINIMUM-ENERGY RELAXED STATE S. Regnier and E. R. Priest School of Mathematics, University of St. Andrews, St. Andrews, Fife KY16 9SS, UK Received 2007 August 3; accepted 2007 September 7; published 2007

  9. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    improving efficiencies of solar photovoltaic technologies.quantum efficiency (EQE) of the associated photovoltaic

  10. Solar forecasting review

    E-Print Network [OSTI]

    Inman, Richard Headen

    2012-01-01T23:59:59.000Z

    solar photovoltaics (PV) in electric power systems utilizingphotovoltaics (PV) in traditional electric power systems,

  11. SOLAR ENERGY Andrew Blakers

    E-Print Network [OSTI]

    SOLAR ENERGY Andrew Blakers Director, Centre for Sustainable Energy Systems Australian National Solar energy is special. It is vast, ubiquitous and indefinitely sustainable. The solar resource utilised by photovoltaics and solar heat is hundreds of times larger than all other energy resources

  12. ENERGIA SOLAR Introduccio

    E-Print Network [OSTI]

    Batiste, Oriol

    ENERGIA SOLAR · Introducci´o · Usos t`ermics. Baixa temperatura · Sistemes de conversi´o t) Cuines Solars http://www.solarcooking.org #12;DESSALADORS SOLARS #12;APLICACIONS T`ERMIQUES BAIXA TEMPERATURA Col.lectors solars plans per a ACS #12;CONVERSI´O DIRECTA EN ELECTRICITAT C`el.lules i panells

  13. INTRODUCTIONTOTHE SOLAR ATMOSPHERE

    E-Print Network [OSTI]

    ? #12;WHAT ISTHE SOLAR ATMOSPHERE? #12;#12;1-D MODEL ATMOSPHERE Averaged over space and time GoodINTRODUCTIONTOTHE SOLAR ATMOSPHERE D. Shaun Bloomfield Trinity College Dublin #12;OUTLINE What is the solar atmosphere? How is the solar atmosphere observed? What structures exist and how do they evolve

  14. Solar Policy Environment: Houston

    Broader source: Energy.gov [DOE]

    The City of Houston is committed to achieving a sustainable solar infrastructure through strategic partnerships that address market barriers for solar energy through the Houston Solar Initiative. The initiative is dedicated to this long-term goal while focusing on near- and mid-term results that go beyond demonstration solar projects.

  15. Solar Policy Environment: Sacramento

    Broader source: Energy.gov [DOE]

    The City of Sacramento and the greater Sacramento region is the home of a long standing history of commitment to solar. Sacramento Solar Access seeks to further widespread adoption of solar energy by addressing current market barriers and preparing, through design guidelines and education, the infrastructure that will optimize solar production in the future.

  16. SOLAR WIND HEAVY IONS OVER SOLAR CYCLE 23: ACE/SWICS MEASUREMENTS

    SciTech Connect (OSTI)

    Lepri, S. T.; Landi, E.; Zurbuchen, T. H. [Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, TC 2210 Ann Arbor, MI 48109 (United States)

    2013-05-01T23:59:59.000Z

    Solar wind plasma and compositional properties reflect the physical properties of the corona and its evolution over time. Studies comparing the previous solar minimum with the most recent, unusual solar minimum indicate that significant environmental changes are occurring globally on the Sun. For example, the magnetic field decreased 30% between the last two solar minima, and the ionic charge states of O have been reported to change toward lower values in the fast wind. In this work, we systematically and comprehensively analyze the compositional changes of the solar wind during cycle 23 from 2000 to 2010 while the Sun moved from solar maximum to solar minimum. We find a systematic change of C, O, Si, and Fe ionic charge states toward lower ionization distributions. We also discuss long-term changes in elemental abundances and show that there is a {approx}50% decrease of heavy ion abundances (He, C, O, Si, and Fe) relative to H as the Sun went from solar maximum to solar minimum. During this time, the relative abundances in the slow wind remain organized by their first ionization potential. We discuss these results and their implications for models of the evolution of the solar atmosphere, and for the identification of the fast and slow wind themselves.

  17. A self-consistent nonlinear force-free solution for a solar active region magnetic M.S. Wheatland

    E-Print Network [OSTI]

    Régnier, Stéphane

    fields 1. Introduction Solar coronal magnetic fields provide the source of energy for solar flaresA self-consistent nonlinear force-free solution for a solar active region magnetic field M.S. Wheatland Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia m

  18. alto california usa: Topics by E-print Network

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

    Summary: California Energy Commission GUIDELINES GUIDELINES FOR CALIFORNIA'S SOLAR ELECTRIC INCENTIVE, this document presents guidelines for solar energy system incentive...

  19. Nuclear magnetohydrodynamic EMP, solar storms, and substorms

    SciTech Connect (OSTI)

    Rabinowitz, M. (Electric Power Research Inst., Palo Alto, CA (United States)); Meliopoulous, A.P.S.; Glytsis, E.N. (Georgia Inst. of Tech., Atlanta, GA (United States). School of Electrical Engineering); Cokkinides, G.J. (Electrical Engineering Dept., Univ. of South Carolina, Columbia, SC (United States))

    1992-10-20T23:59:59.000Z

    In addition to a fast electromagnetic pulse (EMP), a high altitude nuclear burst produces a relatively slow magnetohydrodynamic EMP (MHD EMP), whose effects are like those from solar storm geomagnetically induced currents (SS-GIC). The MHD EMP electric field E [approx lt] 10[sup [minus] 1] V/m and lasts [approx lt] 10[sup 2] sec, whereas for solar storms E [approx gt] 10[sup [minus] 2] V/m and lasts [approx gt] 10[sup 3] sec. Although the solar storm electric field is lower than MHD EMP, the solar storm effects are generally greater due to their much longer duration. Substorms produce much smaller effects than SS-GIC, but occur much more frequently. This paper describes the physics of such geomagnetic disturbances and analyzes their effects.

  20. Fifteenth DOE solar photochemistry research conference

    SciTech Connect (OSTI)

    Not Available

    1991-01-01T23:59:59.000Z

    The annual Solar Photochemistry Research Conference brings together contractors and grantees of the Division of Chemical Sciences engaged in fundamental research on solar photochemical energy conversion to exchange information on recently completed studies, research in progress, and future plans. The meeting also provided an opportunity for interested representatives of government and industry to assess the current status of the field. The program encompassed the themes of photoelectrochemistry, organic and inorganic photochemistry, supramolecular assemblies, solvent effects on electron transfer, and photosynthesis. This year, in an effort to provide an overview on solar photochemical energy conversion to new participants and to foster a cohesive approach in problem solving, a panel discussion was added, in which the panelists addressed the current status of the field and identified propitious pathways in solar photochemistry.

  1. Solar for All: A Community Solar Webinar

    Office of Energy Efficiency and Renewable Energy (EERE)

    ICLEI Local Governments for Sustainability U.S.A. presents the second part of the Members Webinar Series highlighting best practices and innovative local solutions from the ICLEI member network....

  2. Solar Policy Environment: Pittsburgh

    Broader source: Energy.gov [DOE]

    In this project, Pittsburgh plans to build on its reputation as a national leader in green practices. Its Solar America Cities project will develop a distributed approach to adoption of solar energy technologies. Pittsburghs partnership includes universities, non-profit organizations, and business, labor and foundation communities. The city plans to transform the solar energy market and stimulate early adoption of solar technology, to show that solar technology works in a northern city.

  3. Error analysis of motion transmission mechanisms : design of a parabolic solar trough

    E-Print Network [OSTI]

    Koniski, Cyril (Cyril A.)

    2009-01-01T23:59:59.000Z

    This thesis presents the error analysis pertaining to the design of an innovative solar trough for use in solar thermal energy generation fields. The research was a collaborative effort between Stacy Figueredo from Prof. ...

  4. Improving the reliability and accuracy of a multipyranometer array measuring solar radiation

    E-Print Network [OSTI]

    Klima, Peter Miloslaw

    2000-01-01T23:59:59.000Z

    The measurement of solar radiation is crucial for the use of solar energy in fields including power generation, agriculture and meteorology. In the building sciences, It is essential for daylighting studies, energy use calculations, and thermal...

  5. Boston Massachusetts: Solar in Action (Brochure), Solar America...

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

    Boston, Massachusetts Includes case studies on: * Incorporating Solar into Emergency Preparedness Planning * Developing the Boston Solar Map October 2011 Solar in Action Boston was...

  6. Salt Lake City, Utah: Solar in Action (Brochure), Solar America...

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

    a lack of understanding about solar contributed to preventing the widespread adoption of solar energy in all markets. Salt Lake City's prior solar successes with support from...

  7. SciTech Connect: Solar Energy Education. Solar solutions: Reader...

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

    Solar solutions: Reader, Part III Citation Details In-Document Search Title: Solar Energy Education. Solar solutions: Reader, Part III You are accessing a document from the...

  8. Geothermal, Energy Efficiency, and Solar PV Opportunities at Nissan USE

    E-Print Network [OSTI]

    Ford, R.; Ong, J.; Reeder, J.; Sridar, V.; Zhang, R.

    2014-01-01T23:59:59.000Z

    Geothermal, Energy Efficiency, and Solar PV Opportunities at Nissan USA May 21st, 2014 Robinson Ford Justin Ong Jake Reeder Vikram Sridar Rica Zhang ESL-IE-14-05-04 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New... Orleans, LA. May 20-23, 2014 Carbon Goal is Driving Innovation ESL-IE-14-05-04 Proceedings of the Thrity-Sixth Industrial Energy Technology Conference New Orleans, LA. May 20-23, 2014 Research Areas Geothermal Solar Photovoltaics EE Verification ESL...

  9. The Sun's interior structure and dynamics, and the solar cycle

    E-Print Network [OSTI]

    Broomhall, A -M; Howe, R; Norton, A A; Thompson, M J

    2014-01-01T23:59:59.000Z

    The Sun's internal structure and dynamics can be studied with helioseismology, which uses the Sun's natural acoustic oscillations to build up a profile of the solar interior. We discuss how solar acoustic oscillations are affected by the Sun's magnetic field. Careful observations of these effects can be inverted to determine the variations in the structure and dynamics of the Sun's interior as the solar cycle progresses. Observed variations in the structure and dynamics can then be used to inform models of the solar dynamo, which are crucial to our understanding of how the Sun's magnetic field is generated and maintained.

  10. Theory of solar luminosity variations

    E-Print Network [OSTI]

    H. C. Spruit

    2000-03-03T23:59:59.000Z

    The theory of stellar structure can be used to identify the most plausible mechanisms for the irradiance variations associated with the solar cycle. Changes in surface emissivity, i.e. the reduced cooling in spots and enhanced emission by small scale magnetic fields, are the most effective mechanisms and account for most of the observed variation. Helioseismology will soon be able to test the consequences of changes in surface emissivity, and distinguish them from other scenarios for irradiance variability.

  11. Improved Methodology to Measure Normal Incident Solar Radiation with a Multi-Pyranometer Array

    E-Print Network [OSTI]

    Baltazar, J.C.; Sun, Y.; Haberl, J.

    ESL-PA-13-11-02 Available online at www.sciencedirect.com Energy Procedia 00 (2013) 000000 www.elsevier.com/locate/procedia 2013 ISES Solar World Congress Improved Methodology to Measure Normal... Incident Solar Radiation with a Multi-Pyranometer Array Juan-Carlos Baltazar*, Yifu Sun, Jeff Haberl Energy Systems Laboratory, Texas A&M Engineering Experiment Station, The Texas A&M University System College Station, TX 77845, U.S.A. Abstract...

  12. Global Sea Level Stabilization-Sand Dune Fixation: A Solar-powered Sahara Seawater Textile Pipeline

    E-Print Network [OSTI]

    Viorel Badescu; Richard B. Cathcart; Alexander A. Bolonkin

    2007-07-21T23:59:59.000Z

    Could anthropogenic saturation with pumped seawater of the porous ground of active sand dune fields in major deserts (e.g., the westernmost Sahara) cause a beneficial reduction of global sea level? Seawater extraction from the ocean, and its deposition on deserted sand dune fields in Mauritania and elsewhere via a Solar-powered Seawater Textile Pipeline (SSTP) can thwart the postulated future global sea level. Thus, Macro-engineering offers an additional cure for anticipated coastal change, driven by global sea level rise, that could supplement, or substitute for (1) stabilizing the shoreline with costly defensive public works (armoring macroprojects) and (2) permanent retreat from the existing shoreline (real and capital property abandonment). We propose Macro-engineering use tactical technologies that sculpt and vegetate barren near-coast sand dune fields with seawater, seawater that would otherwise, as commonly postulated, enlarge Earth seascape area! Our Macro-engineering speculation blends eremology with hydrogeology and some hydromancy. We estimate its cost at 1 billion dollars - about 0.01 per sent of the USA 2007 Gross Domestic Product.

  13. 2008 Solar Technologies Market Report

    E-Print Network [OSTI]

    Price, S.

    2010-01-01T23:59:59.000Z

    collaborating on a Solar Programmatic Environmental ImpactEconomic, and Environmental Benefits of the Solar AmericaEnergy and Environmental Benefits of Concentrating Solar

  14. Sandia National Laboratories: Solar Newsletter

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

    Energy, Solar, Solar Newsletter A team from Sandia National Laboratories' (SNL) National Solar Thermal Test Facility (NSTTF) recently won a first place Excellence Award in the...

  15. Bright Ideas in Solar Energy

    E-Print Network [OSTI]

    Melville, Jo

    2014-01-01T23:59:59.000Z

    Molten Nitrate Salt for Solar Energy Storage. Retrieved frommore-efficiently Solar Energy Industries Association (2012-year-review Solar Energy Industries Association (

  16. 2008 Solar Technologies Market Report

    E-Print Network [OSTI]

    Price, S.

    2010-01-01T23:59:59.000Z

    96 4.3.2 Customer Solar Leaseagreement financing, customer solar lease financing,eligible Minimum solar or customer-sited requirement Extra

  17. Utah Solar Outlook March 2010

    Broader source: Energy.gov [DOE]

    This presentation provides an overview of Utah's solar market, policy initiatives, and progress to date on the Solar America Cities Project: Solar Salt Lake.

  18. Solar Impulsive Energetic Electron Events

    E-Print Network [OSTI]

    Wang, Linghua

    2009-01-01T23:59:59.000Z

    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

  19. 2008 Solar Technologies Market Report

    E-Print Network [OSTI]

    Price, S.

    2010-01-01T23:59:59.000Z

    10MW Thin Film Solar Power Plant for Sempra Generation. 2009). Concentrating solar power plants of the southwest1.11. Concentrating solar power plants of the southwest

  20. Sandia National Laboratories: Solar Energy

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

    in Concentrating Solar Power, Customers & Partners, Energy, News, Partnership, Renewable Energy, Solar Areva Solar is collaborating with Sandia National Laboratories on a new...

  1. Sandia National Laboratories: Solar Newsletter

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

    for Download On March 13, 2014, in Energy, News, News & Events, Photovoltaic, Renewable Energy, Solar, Solar Newsletter Sandia developed the Solar Glare Hazard Analysis Tool...

  2. Sandia National Laboratories: Solar Energy

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

    heat can also be efficiently and cheaply stored to produce electricity when the sun ... Solar Energy On February 3, 2011, in Solar Programs Photovoltaics Concentrating Solar...

  3. Sandia National Laboratories: Solar Energy

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

    Air Force Research Laboratory Testing On August 17, 2012, in Concentrating Solar Power, Energy, Facilities, National Solar Thermal Test Facility, News, Renewable Energy, Solar...

  4. 2008 Solar Technologies Market Report

    E-Print Network [OSTI]

    Price, S.

    2010-01-01T23:59:59.000Z

    the shipments of two companies, BP Solar and Mitsubishiaddition, funding to solar companies increased dramaticallyand expansions of solar companies. Greater debt financing is

  5. Sandia National Laboratories: Solar Research

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

    Solar Research Pratt Whitney Rocketdyne Testing On December 19, 2012, in Concentrating Solar Power, EC, Energy, Facilities, National Solar Thermal Test Facility, News, News &...

  6. First Solar Corporate Template 2013

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

    2 Copyright 2013, First Solar, Inc. Why Are We Backtracking? 3 Copyright 2013, First Solar, Inc. Shading Response * First Solar modules are laid-out in landscape...

  7. Sandia National Laboratories: Solar Mirrors

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

    Solar Mirrors Concentrating Solar Power (CSP) On April 13, 2011, in CSP R&D at Sandia Testing Facilities Software & Tools Resources Contacts News Concentrating Solar Power...

  8. Solar Easements and Rights Laws

    Broader source: Energy.gov [DOE]

    Solar access provisions in the General Laws of Massachusetts allow for the creation of voluntary solar easements to protect solar exposure and authorizes zoning rules that prohibit unreasonable...

  9. Solar Design Workbook

    SciTech Connect (OSTI)

    Franta, G.; Baylin, F.; Crowther, R.; Dubin, F.; Grace, A., Griffith, J.W.; Holtz, M.; Kutscher, C.; Nordham, D.; Selkowitz, S.; Villecco, M.

    1981-06-01T23:59:59.000Z

    This Solar Design Workbook presents solar building design applications for commercial buildir^s. The book is divided into four sections. The first section describes the variety of solar applications in buildings including conservation aspects, solar fundamentals, passive systems, active systems, daylighting, and other solar options. Solar system design evaluation techniques including considerations for building energy requirements, passive systems, active systems, and economics are presented in Section II. The third section attempts to assist the designer in the building design process for energy conservation and solar applications including options and considerations for pre-design, design, and post-design phases. The information required for the solar design proee^ has not been fully developed at this time. Therefore, Section III is incomplete, but an overview of the considerations with some of the design proces elements is presented. Section IV illustrates ease studies that utilize solar applications in the building design.

  10. Sphere Light Field Rendering Zigang Wang1

    E-Print Network [OSTI]

    Sphere Light Field Rendering Zigang Wang1 and Zhengrong Liang1,2 Departments of Radiology1 and Computer Science2 , State University of New York, Stony Brook, NY 11794, USA ABSTRACT Light field algorithm is one of the most famous image-based rendering techniques. In this paper, an improved light field

  11. Homebuyer Solar Option and Solar Offset Program

    Broader source: Energy.gov [DOE]

    Senate Bill 1 of 2006, which established the statewide California Solar Initiative, also required the California Energy Commission (CEC) to implement regulations that require sellers of production...

  12. Solar buildings. Overview: The Solar Buildings Program

    SciTech Connect (OSTI)

    Not Available

    1998-04-01T23:59:59.000Z

    Buildings account for more than one third of the energy used in the United States each year, consuming vast amounts of electricity, natural gas, and fuel oil. Given this level of consumption, the buildings sector is rife with opportunity for alternative energy technologies. The US Department of Energy`s Solar Buildings Program was established to take advantage of this opportunity. The Solar Buildings Program is engaged in research, development, and deployment on solar thermal technologies, which use solar energy to produce heat. The Program focuses on technologies that have the potential to produce economically competitive energy for the buildings sector.

  13. IEEE Energy2030 Atlanta, Georgia, USA

    E-Print Network [OSTI]

    Ratnasamy, Sylvia

    an innovative electric power architecture, rooted in lessons learned from the Internet and microgrids, whichIEEE Energy2030 Atlanta, Georgia, USA 17-18 November 2008 An Architecture for Local Energy-disruptive incremental adoption. Such a system, which we term a "LoCal" grid, is controlled by intelligent power switches

  14. Black Shales Adina Paytan, Stanford University, USA

    E-Print Network [OSTI]

    Paytan, Adina

    Tales of Black Shales Adina Paytan, Stanford University, USA Several times during the middle of the Cretaceous period, between 125 and 80 million years ago, organic-carbon-rich black shales were deposited over large areas of the ocean floor. These black shales provide valuable information about past climates

  15. Ocean Thermal Energy Conversion Mostly about USA

    E-Print Network [OSTI]

    Ocean Thermal Energy Conversion History Mostly about USA 1980's to 1990's and bias towards Vega Structures (Plantships) · Bottom-Mounted Structures · Model Basin Tests/ At-Sea Tests · 210 kW OC-OTEC) #12;#12;Claude's Off Rio de Janeiro (1933) · Floating Ice Plant: 2.2 MW OC- OTEC to produce 2000

  16. Ocean Thermal Energy Conversion Mostly about USA

    E-Print Network [OSTI]

    Ocean Thermal Energy Conversion History Mostly about USA 1980's to 1990's and bias towards Vega · Floating Structures (Plantships) · Bottom-Mounted Structures · Model Basin Tests/ At-Sea Tests · 210 kW OC-OTEC: Georges Claude (Open Cycle OTEC) · 1928 Ougree Experiment, France: Factory Water Outflow (33 °C) & Meuse

  17. Solar2010, the 48th AuSES Annual Conference 1-3 December 2010, Canberra, ACT, Australia

    E-Print Network [OSTI]

    Concentrating Solar Power, Energy Storage, Molten Salt. INTRODUCTION Concentrating solar power (CSP) can both of the solar field and heat transfer fluid was subcontracted to Flagsol, a joint venture between German firmsSolar2010, the 48th AuSES Annual Conference 1-3 December 2010, Canberra, ACT, Australia A Global

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

    E-Print Network [OSTI]

    California at Berkeley, University of

    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

  19. alto ca usa: Topics by E-print Network

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

    of Technology, Pasadena, CA 91109, USA; amainzer@jpl.nasa.gov 2 Infrared Processing, Tucson, AZ 85719, USA 4 Department of Physics and Astronomy, UCLA, P.O. Box 91547, Los...

  20. austin tx usa: Topics by E-print Network

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

    78712, USA b Bureau of Economic Geology, Jackson School of Geology, The University of Texas at Austin, Austin, TX 78713, USA c Department of Mathematics Minkoff, Susan E. 50...

  1. Smeg USA: Order (2011-CE-14/1909)

    Broader source: Energy.gov [DOE]

    DOE ordered Smeg USA, Inc. to pay a $6,000 civil penalty after finding Smeg USA had failed to certify that certain models of dishwashers and refrigerators comply with the applicable energy conservation standards.

  2. DuraLamp USA: Order (2010-CE-0912)

    Broader source: Energy.gov [DOE]

    DOE ordered DuraLamp USA, Inc. to pay a $2,500 civil penalty after finding DuraLamp USA had failed to certify that model PAR 30, an incandescent reflector lamp, complies with the applicable energy conservation standards.

  3. Plasmonic conversion of solar energy

    E-Print Network [OSTI]

    Clavero, Cesar

    2014-01-01T23:59:59.000Z

    Basic Research Needs for Solar Energy Utilization, BasicS. Pillai and M. A. Green, Solar Energy Materials and SolarPlasmonic conversion of solar energy Csar Clavero Plasma

  4. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    heat exchangers, and solar cells," Sci-Tech News, vol. 65,Solar Energy Materials and Solar Cells, vol. 86, pp. 451-Nanostructured Silicon- Based Solar Cells, 2013. X. C. Tong,

  5. Pacific Northwest Solar Radiation Data

    E-Print Network [OSTI]

    Oregon, University of

    Pacific Northwest Solar Radiation Data UO SOLAR MONITORING LAB Physics Department -- Solar Energy Center 1274 University of Oregon Eugene, Oregon 97403-1274 April 1, 1999 #12;Hourly solar radiation data

  6. Sandia National Laboratories: solar power

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

    solar power Recent Solar Highlights On October 31, 2012, in View all Solar Energy News Molten Salt Test Loop Commissioning On October 10, 2012, in Concentrating Solar Power, EC,...

  7. BIG BEAR SOLAR OBSERVATORY CENTER FOR SOLAR-TERRESTRIAL RESEARCH

    E-Print Network [OSTI]

    BIG BEAR SOLAR OBSERVATORY CENTER FOR SOLAR-TERRESTRIAL RESEARCH Faculty Position in Solar Physics, New Jersey Institute of Technology A tenure track faculty position in solar physics is available of NJIT's program in solar physics, visit http://solar.njit.edu. Applicants are required to have a Ph

  8. Rooftop Solar Potential Distributed Solar Power in NW

    E-Print Network [OSTI]

    1 Rooftop Solar Potential Distributed Solar Power in NW Massoud Jourabchi June 2013 1 Renewables;3 Regional Growth In Solar Energy Consumption Solar consumption both Thermal and PV h b t d i i lhas been on steady increase since early 1990s. From 2000-2010 Solar PV grow at annual rate of 13% and solar thermal

  9. Residential Solar Investment Program

    Broader source: Energy.gov [DOE]

    In March 2012, the CT Green Bank* unveiled its solar photovoltaic residential investment program with the ultimate goal to support 30 megawatts of residential solar photovoltaics (PV). HB 6838...

  10. Junior Solar Sprint

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

    Junior Solar Sprint Overview The Junior Solar Sprint (JSS) Car Competition is a classroom-based, hands-on educational program for 6th, 7th, and 8th grade students. Student teams...

  11. Solar Thermoelectric Energy Conversion

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

    SOLID-STATE SOLAR-THERMAL ENERGY CONVERSION CENTER NanoEngineering Group Solar Thermoelectric Energy Conversion Gang Chen, 1 Daniel Kraemer, 1 Bed Poudel, 2 Hsien-Ping Feng, 1 J....

  12. Solar Construction Permitting Standards

    Broader source: Energy.gov [DOE]

    Owners of solar photovoltaic (PV) systems and solar water heating systems in Colorado are required to obtain a building permit before their systems may be installed. Permits are handled at the l...

  13. Solar Resource Assessment

    SciTech Connect (OSTI)

    Renne, D.; George, R.; Wilcox, S.; Stoffel, T.; Myers, D.; Heimiller, D.

    2008-02-01T23:59:59.000Z

    This report covers the solar resource assessment aspects of the Renewable Systems Interconnection study. The status of solar resource assessment in the United States is described, and summaries of the availability of modeled data sets are provided.

  14. Solar America Initiative

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

    Capacity (MW) 0.1494 20 Baseline (2006) 0.3181 1 0.069 150 2009-2010 2014-2015 BP Solar International Inc. Reaching Grid Parity Using BP Solar Crystalline Silicon Technology...

  15. CT Solar Loan

    Broader source: Energy.gov [DOE]

    The Clean Energy Finance and Investment Authority is offering a pilot loan program, CT Solar Loan, to provide homeowners with 15-year loans for solar PV equipment. The loans are administered...

  16. Solar Sales Tax Exemption

    Broader source: Energy.gov [DOE]

    For both residential and non-residential systems, the exemption applies to solar-energy systems that utilize solar radiation to produce energy designed to provide heating, cooling, hot water and/or...

  17. Solar Property Tax Exemption

    Broader source: Energy.gov [DOE]

    In Missouri, solar energy systems not held for resale are exempt from state, local, and county property taxes. As enacted in July 2013, the law does not define solar energy systems.

  18. Solar Construction Permitting Standards

    Broader source: Energy.gov [DOE]

    Owners of solar photovoltaic (PV) systems and solar water heating systems in Arizona are required to obtain a building permit before their systems may be installed. Permits are handled at the...

  19. Sandia National Laboratories: solar

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

    SunShot Initiative to decrease total cost of solar energy systems by 75% by 2020 and make solar energy cost-competitive with ... Page 3 of 1612345...10...Last Last...

  20. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

    of the electrical power output to the solar power input), aSolar Energy Calculator using Google Maps 23 Table 1.24: PV System Power Production Average Daily Irradiance (kWh/m2) Instillation Efficiency Labeled Efficiency Output

  1. Solar Bioethanol from Biomass Sugar Fermentation Shu Tian,1,5

    E-Print Network [OSTI]

    GP-B-21 Solar Bioethanol from Biomass Sugar Fermentation Shu Tian,1,5 Oara Neumann,1 University, Houston, Texas, U.S.A. Bioethanol is a prime alternative fuel candidate that has the potential to considerably reduce our need for petroleum-based fuels. The production of bioethanol from cellulosic feedstock

  2. ON RE-SAMPLING OF SOLAR IMAGES C. E. DeFOREST

    E-Print Network [OSTI]

    DeForest, Craig

    ON RE-SAMPLING OF SOLAR IMAGES C. E. DeFOREST Southwest Research Institute, Boulder, CO, U.S.A. (e-mail: deforest@boulder.swri.edu) (Received 14 August; accepted 18 September 2003) Abstract. Digital image data, such as super-radial expansion of a coronal hole (DeForest et al., 1997). While the theory and techniques

  3. Asymmetry of magnetosheath flows and magnetopause1 shape during low Alfvn Mach number solar wind2

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1 Asymmetry of magnetosheath flows and magnetopause1 shape during low Alfvn Mach number solar wind, 2 Avenue de l'Europe, Ramonville Saint-Agne, France10 4 Space Science Institute, Boulder, Colorado, USA11 5 Rutherford Appleton Laboratory, UK12 6 University of Warwick, Warwick, UK13 7 ISAS/JAXA

  4. SOLAR ENERGY POTENTIALS

    E-Print Network [OSTI]

    Loreta N. Gashi; Sabedin A. Meha; Besnik A. Duriqi; Fatos S. Haxhimusa

    In recent years solar energy has experienced phenomenal growth due to the technological improvements resulting in cost reductions and also governments policies supportive of renewable energy development and utilization. In this paper we will present possibilities for development and deployment of solar energy. We will use Kosovo to compare the existing power production potential and future possible potential by using solar energy.

  5. 7Name ________________________________ Solar Electricity.

    E-Print Network [OSTI]

    be attached directly to the outer surface of a satellite, or can be found on `solar panels' that the satellite. If the satellite is not big enough, additional solar panels may be needed to supply the electricity) The solar cells produce 0.03 watts per square cm, so the power available is 39819 x 0.03 = 1194 watts

  6. Cool Earth Solar

    ScienceCinema (OSTI)

    Lamkin, Rob; McIlroy, Andy; Swalwell, Eric; Rajan, Kish

    2014-02-26T23:59:59.000Z

    In a public-private partnership that takes full advantage of the Livermore Valley Open Campus (LVOC) for the first time, Sandia National Laboratories and Cool Earth Solar have signed an agreement that could make solar energy more affordable and accessible. In this piece, representatives from Sandia, Cool Earth Solar, and leaders in California government all discuss the unique partnership and its expected impact.

  7. Your Community With Solar

    E-Print Network [OSTI]

    Powering Your Community With Solar: Overcoming Market and Implementation Barriers Lessons from successful Solarize campaigns help communities seize volume discounts through collective purchasing The first Solarize program began in Portland, Oregon, as a grassroots campaign for collective SunShot will work

  8. Matter & Energy Solar Energy

    E-Print Network [OSTI]

    Rogers, John A.

    See Also: Matter & Energy Solar Energy· Electronics· Materials Science· Earth & Climate Energy at the University of Illinois, the future of solar energy just got brighter. Although silicon is the industry Electronics Over 1.2 Million Electronics Parts, Components and Equipment. www.AlliedElec.com solar energy

  9. Cool Earth Solar

    SciTech Connect (OSTI)

    Lamkin, Rob; McIlroy, Andy; Swalwell, Eric; Rajan, Kish

    2013-04-22T23:59:59.000Z

    In a public-private partnership that takes full advantage of the Livermore Valley Open Campus (LVOC) for the first time, Sandia National Laboratories and Cool Earth Solar have signed an agreement that could make solar energy more affordable and accessible. In this piece, representatives from Sandia, Cool Earth Solar, and leaders in California government all discuss the unique partnership and its expected impact.

  10. Solar forecasting review

    E-Print Network [OSTI]

    Inman, Richard Headen

    2012-01-01T23:59:59.000Z

    Quantifying PV power output variability, Solar Energy, vol.each solar sen at node i, P(t) the total power output of theSolar Forecasting Historically, traditional power generation technologies such as fossil and nu- clear power which were designed to run in stable output

  11. Solar Policy Environment: Milwaukee

    Broader source: Energy.gov [DOE]

    The City of Milwaukees SAC Initiative, Milwaukee Shines, works to reduce informational, economic and procedural barriers to the widespread adoption of solar energy systems. While the City of Milwaukee and its partners have demonstrated commitment and experience in implementing solar technologies, Milwaukee Shines aims to enhance these efforts and make solar a viable alternative throughout the region.

  12. Solar Policy Environment: Tucson

    Broader source: Energy.gov [DOE]

    The Tucson Solar Initiative seeks to institutionalize the value of nine years of solar energy development experience, secure the promise of renewable energy investment funds, facilitate the installation of a significant volume of installations in the community and establish a mechanism for sustainable solar integration for the future.

  13. Conservation and solar guidelines

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1983-01-01T23:59:59.000Z

    Guidelines are given for selecting R-values and infiltration levels, and determining the size of the solar collection area for passive solar buildings. The guidelines are based on balancing the incremental cost/benefit of conservation and passive solar strategies. Tables are given for 90 cities in the US and the results are also displayed on maps. An example is included.

  14. version:13may14a The USA & the Global Oil System

    E-Print Network [OSTI]

    O'Donnell, Tom

    ....................................................................................... 4 1.5 Fracking: USA oil & gas revolution

  15. High Energy Particles in the Solar Corona

    E-Print Network [OSTI]

    A. Widom; Y. N. Srivastava; L. Larsen

    2008-04-16T23:59:59.000Z

    Collective Ampere law interactions producing magnetic flux tubes piercing through sunspots into and then out of the solar corona allow for low energy nuclear reactions in a steady state and high energy particle reactions if a magnetic flux tube explodes in a violent event such as a solar flare. Filamentous flux tubes themselves are vortices of Ampere currents circulating around in a tornado fashion in a roughly cylindrical geometry. The magnetic field lines are parallel to and largely confined within the core of the vortex. The vortices may thereby be viewed as long current carrying coils surrounding magnetic flux and subject to inductive Faraday and Ampere laws. These laws set the energy scales of (i) low energy solar nuclear reactions which may regularly occur and (ii) high energy electro-weak interactions which occur when magnetic flux coils explode into violent episodic events such as solar flares or coronal mass ejections.

  16. Evolution of Meteorological Base Models for Estimating Hourly Global Solar Radiation in Texas

    E-Print Network [OSTI]

    Kim, H.; Baltazar, J.C.; Haberl, J.S

    2013-01-01T23:59:59.000Z

    for Estimating Hourly Global Solar Radiation in Texas Kee Han Kima,b*, Juan-Carlos Baltazarb, and Jeff S. Haberla,b aDepartment of Architecture, Texas A&M University, 3137 TAMU, College Station, TX 77843-3137, U.S.A. bEnergy Systems Laboratory, Texas A... for measured solar radiation data and, as a result, rely on the values from typical meteorological years. Texas, in a similar fashion as other states in the US, does not have an active network for solar radiation data and has a variety of weather conditions...

  17. Driving Major Solar Flares and Eruptions: Carolus J. Schrijver

    E-Print Network [OSTI]

    Schrijver, Karel

    Driving Major Solar Flares and Eruptions: A Review Carolus J. Schrijver Lockheed Martin Adv. Techn that energize and trigger M- and X-class so- lar flares and associated flux-rope destabilizations. Numerical modeling of specific solar regions is hampered by uncertain coronal-field reconstructions and by poorly

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

    E-Print Network [OSTI]

    Petrovay, Kristóf

    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

  19. Central solar-energy receiver

    DOE Patents [OSTI]

    Not Available

    1981-10-27T23:59:59.000Z

    An improved tower-mounted central solar energy receiver for heating air drawn through the receiver by an induced draft fan is described. A number of vertically oriented, energy absorbing, fin-shaped slats are radially arranged in a number of concentric cylindrical arrays on top of the tower coaxially surrounding a pipe having air holes through which the fan draws air which is heated by the slats which receive the solar radiation from a heliostat field. A number of vertically oriented and wedge-shaped columns are radially arranged in a number of concentric cylindrical clusters surrounding the slat arrays. The columns have two mirror-reflecting sides to reflect radiation into the slat arrays and one energy absorbing side to reduce reradiation and reflection from the slat arrays.

  20. Nanoparticle Solar Cell Final Technical Report

    SciTech Connect (OSTI)

    Breeze, Alison, J; Sahoo, Yudhisthira; Reddy, Damoder; Sholin, Veronica; Carter, Sue

    2008-06-17T23:59:59.000Z

    The purpose of this work was to demonstrate all-inorganic nanoparticle-based solar cells with photovoltaic performance extending into the near-IR region of the solar spectrum as a pathway towards improving power conversion efficiencies. The field of all-inorganic nanoparticle-based solar cells is very new, with only one literature publication in the prior to our project. Very little is understood regarding how these devices function. Inorganic solar cells with IR performance have previously been fabricated using traditional methods such as physical vapor deposition and sputtering, and solution-processed devices utilizing IR-absorbing organic polymers have been investigated. The solution-based deposition of nanoparticles offers the potential of a low-cost manufacturing process combined with the ability to tune the chemical synthesis and material properties to control the device properties. This work, in collaboration with the Sue Carter research group at the University of California, Santa Cruz, has greatly expanded the knowledge base in this field, exploring multiple material systems and several key areas of device physics including temperature, bandgap and electrode device behavior dependence, material morphological behavior, and the role of buffer layers. One publication has been accepted to Solar Energy Materials and Solar Cells pending minor revision and another two papers are being written now. While device performance in the near-IR did not reach the level anticipated at the beginning of this grant, we did observe one of the highest near-IR efficiencies for a nanoparticle-based solar cell device to date. We also identified several key parameters of importance for improving both near-IR performance and nanoparticle solar cells in general, and demonstrated multiple pathways which showed promise for future commercialization with further research.

  1. A Global Optimization Approach to the Design of Solar Power Plants

    E-Print Network [OSTI]

    2014-05-08T23:59:59.000Z

    May 8, 2014 ... Keywords: solar thermal power, heliostat field layout, thermo- ... at a high temperature is then transferred to the heat transfer fluid to produce.

  2. Photovoltaic solar concentrator

    DOE Patents [OSTI]

    Nielson, Gregory N.; Okandan, Murat; Resnick, Paul J.; Cruz-Campa, Jose Luis

    2012-12-11T23:59:59.000Z

    A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.

  3. Solar Physics (2006) 237: 85--100 DOI: 10.1007/s1120700601737 C

    E-Print Network [OSTI]

    Li, Hui

    2006-01-01T23:59:59.000Z

    Solar Physics (2006) 237: 85--100 DOI: 10.1007/s11207­006­0173­7 C # Springer 2006 IS PRE Beijing Road, Nanjing 210008, China (e­mail: lihui@mail.pmo.ac.cn) BRIGITTE SCHMIEDER and GUILLAUME Imager (MDI) onboard Solar and Heliospheric Obser­ vatory (SOHO), the Solar Magnetic Field Telescope

  4. Design and Analysis of Micro-Solar Power Systems for Wireless

    E-Print Network [OSTI]

    California at Berkeley, University of

    Design and Analysis of Micro- Solar Power Systems for Wireless Sensor Networks Jaein Jeong UC in Richmond Field Station Trio Heliomote #12;3 Our Contributions Model for micro-solar power system guideline for micro-solar power systems. #12;4 Organization System Architecture Model for Each Component

  5. 2010MIT SOLAR ELECTRIC VEHICLE TEAM A MESSAGE FROM THE PRESIDENT

    E-Print Network [OSTI]

    2010MIT SOLAR ELECTRIC VEHICLE TEAM #12;A MESSAGE FROM THE PRESIDENT President Hockfield poses with SEVT members at an outreach event ONE #12;The MIT Solar Electric Vehicle Team (SEVT) is a student of innovators. Team Goals: Facilitate continuous innovation and development in all fields related to solar

  6. First Asia-Pacific Solar Physics Meeting ASI Conference Series, 2011, Vol. 2, pp 291296

    E-Print Network [OSTI]

    Li, Hui

    show solar cycle variations (Cook, Mackay & Nandy 2009). The definition, classification and propertiesFirst Asia-Pacific Solar Physics Meeting ASI Conference Series, 2011, Vol. 2, pp 291­296 Edited by Arnab Rai Choudhuri & Dipankar Banerjee Magnetic field configurations leading to solar eruptions Hui Li

  7. Solar Two: A Molten Salt Power Tower Demonstration* Craig E.Tyner

    E-Print Network [OSTI]

    Laughlin, Robert B.

    .S. Department of Energy (DOE),Sandia National Laboratories, and industry to convert the 10-MwSolar One Power receiver, a new thermal storage system, and a new steam generator; it utilizes Solar One's heliostat field and turbine generator. Successful operation of the convertedplant, called SolarTwo, will reduce

  8. The renaissance of hybrid solar cells: progresses, challenges, and perspectives

    E-Print Network [OSTI]

    Feng, Gao; Ren, Shenqiang; Jianpu, Wang

    2013-06-12T23:59:59.000Z

    Solution-processed hybrid solar cells, a blend of conjugated polymers and semiconducting nanocrystals, are a promising candidate for next-generation energy-conversion devices. The renaissance of this field in recent years has yielded a much deeper...

  9. The cause of the weak solar cycle 24

    E-Print Network [OSTI]

    Jiang, Jie; Schuessler, Manfred

    2015-01-01T23:59:59.000Z

    The ongoing 11-year cycle of solar activity is considerably less vigorous than the three cycles before. It was preceded by a very deep activity minimum with a low polar magnetic flux, the source of the toroidal field responsible for solar magnetic activity in the subsequent cycle. Simulation of the evolution of the solar surface field shows that the weak polar fields and thus the weakness of the present cycle 24 are mainly caused by a number of bigger bipolar regions emerging at low latitudes with a `wrong' (i.e., opposite to the majority for this cycle) orientation of their magnetic polarities in the North-South direction, which impaired the growth of the polar field. These regions had a particularly strong effect since they emerged within $\\pm10^\\circ$ latitude from the solar equator.

  10. California Solar Initiative- Solar Thermal Program

    Broader source: Energy.gov [DOE]

    '''''Note: This program was modified by AB 2249, signed in September 2012. The bill allows for non-residential solar pool heating to qualify for incentives, and requires program administrators to...

  11. Solar Energy International Solar PV 101 Training

    Office of Energy Efficiency and Renewable Energy (EERE)

    Solar Energy International is offering a five-day training that provides an overview of the three basic PV system applications, primarily focusing on grid-direct systems. The goal of the course is...

  12. ANALYSIS OF THE CALIFORNIA SOLAR RESOURCE

    E-Print Network [OSTI]

    Berdahl, P.

    2011-01-01T23:59:59.000Z

    NEEDS FOR SOLAR RADIATION DATA SUMMARY AND DESCRIPTION OFSOURCES OF SOLAR RADIATION DATA CALI FORN IA SOLAR DATA MANNEED FOR SOLAR RADIATION DATA - Made direct contacts with

  13. ECOLOGICAL CONSIDERATIONS OF THE SOLAR ALTERNATIVE

    E-Print Network [OSTI]

    Davidson, M.

    2010-01-01T23:59:59.000Z

    et al. , April 1975. 4. Solar Thermal Conversion Missionof.Several Central Reveiver Solar Thermal Power Plant Designterm solar energy are: Included solar thermal conversion to

  14. Sandia National Laboratories: Jawaharlal Nehru Solar National...

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

    Jawaharlal Nehru Solar National Solar Energy Mission Solar Energy Research Institute for India and the United States Kick-Off On November 27, 2012, in Concentrating Solar Power,...

  15. Sandia National Laboratories: SolarReserve Inc.

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

    & Events, Partnership, Renewable Energy, Solar, Solar Newsletter SolarReserve is testing engineering units at the National Solar Thermal Test Facility (NSTTF) operated by Sandia....

  16. SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS

    E-Print Network [OSTI]

    Lampert, Carl M.

    2013-01-01T23:59:59.000Z

    fabrication of solar collector panels. adhesives and bondingdirectly to solar collector panels. the solar selectivefabrication of solar collector panels. However, the finish

  17. Sandia National Laboratories: Concentrating Solar Power

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

    Concentrating Solar Power National Solar Thermal Testing Facility Beam Profiling On November 2, 2012, in Concentrating Solar Power, News, Renewable Energy, Solar On Thursday, June...

  18. Sandia National Laboratories: multiscale concentrated solar power

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

    concentrated solar power Solar Energy Research Institute for India and the United States Kick-Off On November 27, 2012, in Concentrating Solar Power, Energy, National Solar Thermal...

  19. Helioseismology and Solar Abundances

    E-Print Network [OSTI]

    Sarbani Basu; H. M. Antia

    2007-11-28T23:59:59.000Z

    Helioseismology has allowed us to study the structure of the Sun in unprecedented detail. One of the triumphs of the theory of stellar evolution was that helioseismic studies had shown that the structure of solar models is very similar to that of the Sun. However, this agreement has been spoiled by recent revisions of the solar heavy-element abundances. Heavy element abundances determine the opacity of the stellar material and hence, are an important input to stellar model calculations. The models with the new, low abundances do not satisfy helioseismic constraints. We review here how heavy-element abundances affect solar models, how these models are tested with helioseismology, and the impact of the new abundances on standard solar models. We also discuss the attempts made to improve the agreement of the low-abundance models with the Sun and discuss how helioseismology is being used to determine the solar heavy-element abundance. A review of current literature shows that attempts to improve agreement between solar models with low heavy-element abundances and seismic inference have been unsuccessful so far. The low-metallicity models that have the least disagreement with seismic data require changing all input physics to stellar models beyond their acceptable ranges. Seismic determinations of the solar heavy-element abundance yield results that are consistent with the older, higher values of the solar abundance, and hence, no major changes to the inputs to solar models are required to make higher-metallicity solar models consistent with helioseismic data.

  20. Turbulence in the Solar Atmosphere: Manifestations and Diagnostics via Solar Image Processing

    E-Print Network [OSTI]

    Manolis K. Georgoulis

    2005-11-15T23:59:59.000Z

    Intermittent magnetohydrodynamical turbulence is most likely at work in the magnetized solar atmosphere. As a result, an array of scaling and multi-scaling image-processing techniques can be used to measure the expected self-organization of solar magnetic fields. While these techniques advance our understanding of the physical system at work, it is unclear whether they can be used to predict solar eruptions, thus obtaining a practical significance for space weather. We address part of this problem by focusing on solar active regions and by investigating the usefulness of scaling and multi-scaling image-processing techniques in solar flare prediction. Since solar flares exhibit spatial and temporal intermittency, we suggest that they are the products of instabilities subject to a critical threshold in a turbulent magnetic configuration. The identification of this threshold in scaling and multi-scaling spectra would then contribute meaningfully to the prediction of solar flares. We find that the fractal dimension of solar magnetic fields and their multi-fractal spectrum of generalized correlation dimensions do not have significant predictive ability. The respective multi-fractal structure functions and their inertial-range scaling exponents, however, probably provide some statistical distinguishing features between flaring and non-flaring active regions. More importantly, the temporal evolution of the above scaling exponents in flaring active regions probably shows a distinct behavior starting a few hours prior to a flare and therefore this temporal behavior may be practically useful in flare prediction. The results of this study need to be validated by more comprehensive works over a large number of solar active regions.

  1. Connectable solar air collectors Solar Energy Centre Denmark

    E-Print Network [OSTI]

    Connectable solar air collectors Solar Energy Centre Denmark Danish Technological Institute SEC-R-22 #12;Connectable solar air collectors Sren stergaard Jensen Miroslav Bosanac Solar Energy Centre Package 91 #12;92 #12;93 #12;Appendix B Working drawings for the connectable solar air collectors 94 #12

  2. Rooftop Solar Potential Distributed Solar Power in NW

    E-Print Network [OSTI]

    6/19/2013 1 Rooftop Solar Potential Distributed Solar Power in NW Massoud Jourabchi June 2013 1 in 2012 4 #12;6/19/2013 3 Regional Growth In Solar Energy Consumption Solar consumption both Thermal and PV h b t d i i lhas been on steady increase since early 1990s. From 2000-2010 Solar PV grow

  3. Petrovay: Solar physics The solar cycle ACTIVE REGIONS

    E-Print Network [OSTI]

    Petrovay, Kristf

    Petrovay: Solar physics The solar cycle ACTIVE REGIONS Large scale (up to 100 Mm) anomalies in the structure and radiation of the solar atmosphere. Photosphere : AR = cluster of strong magnetic flux tubes of facular points. Filamentary structure due to supergranulation. #12;Petrovay: Solar physics The solar cycle

  4. Solar and Heliospheric Physics with the Square Kilometre Array

    E-Print Network [OSTI]

    Nakariakov, Valery M; Browning, Philippa K; Maia, Dalmiro; Kontar, Eduard P; Oberoi, Divya; Gallagher, Peter T; Cairns, Iver H; Ratcliffe, Heather

    2015-01-01T23:59:59.000Z

    The fields of solar radiophysics and solar system radio physics, or radio heliophysics, will benefit immensely from an instrument with the capabilities projected for SKA. Potential applications include interplanetary scintillation (IPS), radio-burst tracking, and solar spectral radio imaging with a superior sensitivity. These will provide breakthrough new insights and results in topics of fundamental importance, such as the physics of impulsive energy releases, magnetohydrodynamic oscillations and turbulence, the dynamics of post-eruptive processes, energetic particle acceleration, the structure of the solar wind and the development and evolution of solar wind transients at distances up to and beyond the orbit of the Earth. The combination of the high spectral, time and spatial resolution and the unprecedented sensitivity of the SKA will radically advance our understanding of basic physical processes operating in solar and heliospheric plasmas and provide a solid foundation for the forecasting of space weathe...

  5. Review of legal and institutional issues in the use of decentralized solar energy systems

    SciTech Connect (OSTI)

    Schweitzer, M.

    1980-04-01T23:59:59.000Z

    The legal and institutional issues involved in the use of decentralized solar energy systems are examined for the purpose of advising government planners and policymakers, the solar industry, solar researchers, and prospective solar users of present and potential impediments and incentives to solar commercialization. This information was gathered primarily through a comprehensive literature review, with supplementary data provided through interviews with representatives of organizations active in the solar field. Five major issue areas were identified in the course of this study: (1) prohibitions on the use of solar equipment, (2) regulation of the production and placement of solar systems, (3) access to sunlight, (4) financial incentives and impediments to the use of solar technologies, and (5) the public utility-solar user interface. Each can be important in its impacts on the incidence of solar usage. The major actors involved with the issues identified above represent both the private and public sectors. Important private sector participants include solar manufacturers and installers, labor unions, lending institutions, utility companies, solar users themselves, and other community property owners. In the public sector, local, state, and federal governments are all capable of acting in ways that can influence the solar commercialization effort. Implementation options are available for all levels of government seeking to take an active role in addressing the previously mentioned legal and institutional issues. The appropriate actions will vary from federal to state to local governments, but each level can be important in removing existing barriers and creating new incentives for solar use.

  6. Solar Chemical Peculiarities?

    E-Print Network [OSTI]

    Carlos Allende Prieto

    2006-12-08T23:59:59.000Z

    Several investigations of FGK stars in the solar neighborhood have suggested that thin-disk stars with an iron abundance similar to the Sun appear to show higher abundances of other elements, such as silicon, titanium, or nickel. Offsets could arise if the samples contain stars with ages, mean galactocentric distances, or kinematics, that differ on average from the solar values. They could also arise due to systematic errors in the abundance determinations, if the samples contain stars that are different from the Sun regarding their atmospheric parameters. We re-examine this issue by studying a sample of 80 nearby stars with solar-like colors and luminosities. Among these solar "analogs", the objects with solar iron abundances exhibit solar abundances of carbon, silicon, calcium, titanium and nickel.

  7. The Solar Argon Abundance

    E-Print Network [OSTI]

    Katharina Lodders

    2007-10-24T23:59:59.000Z

    The solar argon abundance cannot be directly derived by spectroscopic observations of the solar photosphere. The solar Ar abundance is evaluated from solar wind measurements, nucleosynthetic arguments, observations of B stars, HII regions, planetary nebulae, and noble gas abundances measured in Jupiter's atmosphere. These data lead to a recommended argon abundance of N(Ar) = 91,200(+/-)23,700 (on a scale where Si = 10^6 atoms). The recommended abundance for the solar photosphere (on a scale where log N(H) = 12) is A(Ar)photo = 6.50(+/-)0.10, and taking element settling into account, the solar system (protosolar) abundance is A(Ar)solsys = 6.57(+/-)0.10.

  8. Solar Policy Environment: Philadelphia

    Broader source: Energy.gov [DOE]

    The project will identify promising locations for photovoltaic installations and create a roadmap for commercial and residential system developers. The roadmap, published as the Solar Developers Guide to Philadelphia, will be used to promote and attract solar energy investment. Philadelphias long-term goal for solar energy is to fully utilize the potential of solar energy to safely, reliably, and cost-effectively displace the use of energy generated by fossil fuels. To achieve its solar energy goals, the City of Philadelphia must add large commercial scale (> 500 kW) solar installations to its ongoing efforts on the smaller scale (we note that a new 1 MW PV installation will be installed at the Philadelphia Navy Yard by the end of 2008).

  9. Solar thermal aircraft

    DOE Patents [OSTI]

    Bennett, Charles L. (Livermore, CA)

    2007-09-18T23:59:59.000Z

    A solar thermal powered aircraft powered by heat energy from the sun. A heat engine, such as a Stirling engine, is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller. The heat engine has a thermal battery in thermal contact with it so that heat is supplied from the thermal battery. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

  10. EVIDENCE FOR SOLAR FREQUENCY DEPENDENCE ON SUNSPOT TYPE

    SciTech Connect (OSTI)

    Baldner, Charles S.; Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Bogart, Richard S. [Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305-4085 (United States)

    2011-05-20T23:59:59.000Z

    High-degree solar mode frequencies as measured by ring diagrams are known to change in the presence of the strong magnetic fields found in active regions. We examine these changes in frequency for a large sample of active regions analyzed with data from the Michelson Doppler Imager on board the Solar and Heliospheric Observatory spacecraft, spanning most of solar cycle 23. We confirm that the frequencies increase with increasing magnetic field strength, and that this dependence is generally linear. We find that the dependence is slightly but significantly different for active regions with different sunspot types.

  11. Absolute Energy USA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat 1AMEE Jump to: navigation, search40Georgia:SL JumpAREGAbout(USA)

  12. Norvento USA LLC | Open Energy Information

    Open Energy Info (EERE)

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

  13. CleanFUEL USA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof EnergyInnovationin UrbanCity ofCityClean Economy Network JumpCleanCleanFUEL USA

  14. Energy Pro USA | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOEHazel Crest,EnergySerranopolis Jump to:EconCompaniesMainEnergy Pro USA Place:

  15. AREA USA LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDITCaliforniaWeifangwiki Home Jweers'sAIRMaster+APFED-GoodAPIsAREA USA

  16. Solar selective absorption coatings

    DOE Patents [OSTI]

    Mahoney, Alan R. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Martinez, F. Edward (Horseheads, NY)

    2004-08-31T23:59:59.000Z

    A new class of solar selective absorption coatings are disclosed. These coatings comprise a structured metallic overlayer such that the overlayer has a sub-micron structure designed to efficiently absorb solar radiation, while retaining low thermal emissivity for infrared thermal radiation. A sol-gel layer protects the structured metallic overlayer from mechanical, thermal, and environmental degradation. Processes for producing such solar selective absorption coatings are also disclosed.

  17. Solar selective absorption coatings

    DOE Patents [OSTI]

    Mahoney, Alan R. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Martinez, F. Edward (Horseheads, NY)

    2003-10-14T23:59:59.000Z

    A new class of solar selective absorption coatings are disclosed. These coatings comprise a structured metallic overlayer such that the overlayer has a sub-micron structure designed to efficiently absorb solar radiation, while retaining low thermal emissivity for infrared thermal radiation. A sol-gel layer protects the structured metallic overlayer from mechanical, thermal, and environmental degradation. Processes for producing such solar selective absorption coatings are also disclosed.

  18. for doubling solar panel

    E-Print Network [OSTI]

    An outline for doubling solar panel efficiency C o l o ra do S c ho o l of M i ne s Ma g a z i ne Take a look at a solar panel on a sunny Colorado day and, if you're like most people, you won't see physics professor and solar energy researcher, who admits to checking out his panels and their energy

  19. Solar radiation intensity calculations

    E-Print Network [OSTI]

    Levine, Randolph Steven

    1978-01-01T23:59:59.000Z

    SOLAR RADIATION INTENSITY CALCULATIONS A Thesis by RANDOLPH STEVEN LEVINE Submitted to the Graduate College of Texas A&M University in partia'l fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1978 Major Subject...: Physics SOLAR RADIATION INTENSITY CALCULATIONS A Thesis by RANDOLPH STEVEN LEVINE Approved as to style and content by: (Chairman of Committee) (Member) (Member) ( member) (Head of Department) December 1978 f219 037 ABSTRACT Solar Radiation...

  20. Heterojunction solar cell

    DOE Patents [OSTI]

    Olson, J.M.

    1994-08-30T23:59:59.000Z

    A high-efficiency single heterojunction solar cell is described wherein a thin emitter layer (preferably Ga[sub 0.52]In[sub 0.48]P) forms a heterojunction with a GaAs absorber layer. The conversion efficiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the emitter layer. 1 fig.

  1. Ashland, Orgen's solar strategy

    SciTech Connect (OSTI)

    Fegonese, J.A.

    1981-01-01T23:59:59.000Z

    The conceptualization, implementation, and experiences of a small southern Oregon community in attempting to increase the energy efficiency of new residential developments is outlined. The two main ordinances used are (1) a city-wide solar access ordinance, which establishes a special solar setback in the city, and (2) a new development code for housing, which provides for powerful incentives for passive solar housing. Successes and insights gained from the experience are discussed.

  2. Heterojunction solar cell

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO)

    1994-01-01T23:59:59.000Z

    A high-efficiency single heterojunction solar cell wherein a thin emitter layer (preferably Ga.sub.0.52 In.sub.0.48 P) forms a heterojunction with a GaAs absorber layer. The conversion effiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the emitter layer.

  3. Conservation and solar guidelines

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1986-01-01T23:59:59.000Z

    Guidelines are given for selecting R-values and infiltration levels, and determining the size of the solar collection area for passive solar buildings. The guidelines are based on balancing the incremental cost/benefit of conservation and passive solar strategies. Tables are given for 90 cities in the United States and the results are also displayed on maps. The procedures are developed in an appendix, which gives the cost assumptions used and explains how to develop different guidelines for different costs.

  4. Community Solar Scenario Tool: Planning for a Fruitful Solar Garden

    Office of Energy Efficiency and Renewable Energy (EERE)

    As part of a Do-It-Yourself Solar Market Analysis summer series, NREL's Solar Technical Assistance Team (STAT) is presenting a live webinar titled, "Community Solar Scenario Tool: Planning for a...

  5. Seattle, Washington: Solar in Action (Brochure), Solar America...

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

    October 2011 Solar in Action The City of Seattle was designated by the U.S. Department of Energy (DOE) on March 28, 2008, as a Solar America City. Seattle began its Solar America...

  6. The Astrophysical Journal, 715:651655, 2010 May 20 doi:10.1088/0004-637X/715/1/651 C 2010. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    California at Berkeley, University of

    ; watanabe.kyoko@isas.jaxa.jp 2 Space Sciences Laboratory, University of California at Berkeley, 7 Gauss Way , Toshifumi Shimizu1 , Satoshi Masuda3 , and Kiyoshi Ichimoto4 1 Institute of Space and Astronautical Science, Berkeley, CA 94720-7450, USA 3 Solar-Terrestrial Environment Laboratory, Nagoya University, Furo

  7. The Astrophysical Journal, 745:103 (8pp), 2012 February 1 doi:10.1088/0004-637X/745/2/103 C 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A.

    E-Print Network [OSTI]

    Kaiser, Ralf I.

    Institute, University of Hawaii at Manoa, Honolulu, HI 96822, USA Received 2011 May 20; accepted 2011 in laboratory experiments simulating the interaction of ions from the solar wind and those abundant in planetary of nuclear stopping processes irrespective of the mass of the particle irradiation in the kinetic energy

  8. Passive solar technology

    SciTech Connect (OSTI)

    Watson, D

    1981-04-01T23:59:59.000Z

    The present status of passive solar technology is summarized, including passive solar heating, cooling and daylighting. The key roles of the passive solar system designer and of innovation in the building industry are described. After definitions of passive design and a summary of passive design principles are given, performance and costs of passive solar technology are discussed. Passive energy design concepts or methods are then considered in the context of the overall process by which building decisions are made to achieve the integration of new techniques into conventional design. (LEW).

  9. Hybrid Solar Lighting

    SciTech Connect (OSTI)

    Maxey, L Curt [ORNL

    2008-01-01T23:59:59.000Z

    Hybrid solar lighting systems focus highly concentrated sunlight into a fiber optic bundle to provide sunlight in rooms without windows or conventional skylights.

  10. Long Island Solar Farm

    SciTech Connect (OSTI)

    Anders, R.

    2013-05-01T23:59:59.000Z

    The Long Island Solar Farm (LISF) is a remarkable success story, whereby very different interest groups found a way to capitalize on unusual circumstances to develop a mutually beneficial source of renewable energy. The uniqueness of the circumstances that were necessary to develop the Long Island Solar Farm make it very difficult to replicate. The project is, however, an unparalleled resource for solar energy research, which will greatly inform large-scale PV solar development in the East. Lastly, the LISF is a superb model for the process by which the project developed and the innovation and leadership shown by the different players.

  11. 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...

  12. Deed Restrictions for Solar

    Broader source: Energy.gov [DOE]

    This report summarizes the efforts made to address Task 3 - Examples of Residential Deed Restrictions Allowing Solar. The focus of the study is on communities surrounding Houston, Texas.

  13. Electromechanical solar tracking apparatus

    DOE Patents [OSTI]

    Stromberg, Robert P. (Albuquerque, NM)

    1981-01-01T23:59:59.000Z

    The invention relates to an electromechanical solar tracking device which tracks the position of the sun using paired, partially-shaded bimetallic elements.

  14. Flexible Assembly Solar Technology

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

    Energy, Inc. All rights reserved. 3 About BrightSource Energy We develop and build solar thermal projects using our own central tower technology Headquartered in...

  15. Solar energt focusing means

    SciTech Connect (OSTI)

    Tsubota, J.

    1981-11-10T23:59:59.000Z

    A highly efficient solar focusing means being hollow and in semi-cylindrical or arcuate shape, the surface has such fine menisci as to act like convex lenses to focus solar rays towards the center of the focusing body, irrespective of the position of the sun, where a solar energy conversion device is located and further acts to disperse light reflected thereonto from the solar energy conversion device. The focusing body can assume several shapes and thus can be used for roofing of a building, such as a house, or the like, and still be aesthetically pleasing.

  16. Concentrated Solar Thermoelectric Power

    Broader source: Energy.gov [DOE]

    This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 2325, 2013 near Phoenix, Arizona.

  17. Washington County- Solar Ordinance

    Broader source: Energy.gov [DOE]

    Provides for zoning restrictions on solar energy systems, including (1) six foot setbacks; (2) 20 foot height limitations on freestanding systems; (3) limitations on square feet of freestanding...

  18. Sandia National Laboratories: solar

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

    Interactive Tour Operated by Sandia National Laboratories for the U.S. Department of Energy (DOE), the National Solar Thermal Test Facility (NSTTF) is the only test facility...

  19. The Solar Chimney

    E-Print Network [OSTI]

    scul

    2002-11-27T23:59:59.000Z

    Hot air for the solar chimney is produced by the greenhouse effect in a simple air collec- tor consisting only of a glass or plastic film covering stretched...

  20. Solar | Department of Energy

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

    Research Award Program work on. | Photo by Dennis Schroeder, National Renewable Energy Laboratory Shining Stars of Solar: Meet Three SunShot Postdoctoral Award Recipients...

  1. Solar | Department of Energy

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

    Soft costs now account for more than 60% of the total price of installing residential solar energy systems.

  2. Solar | Department of Energy

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

    collected and discuss what has happened in their stills. June 20, 2014 Photovoltaics and Solar Energy (2 Activities) This module addresses issues dealing with the energy from the...

  3. Solar | Department of Energy

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

    Hands-on explorations to teach intermediate students the scientific concepts of solar energy. July 16, 2014 The Sun and Its Energy (11 activities) Hands-on investigations...

  4. Sandia National Laboratories: Solar

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

    Photovoltaic (PV) Regional Test Center (RTC) Website Goes Live On February 26, 2013, in Energy, National Solar Thermal Test Facility, News, News & Events, Partnership,...

  5. Sandia National Laboratories: solar

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

    Workshop On September 10, 2012, in Energy, News, Partnership, Photovoltaic, Renewable Energy, Solar Achieving High Penetrations of PV: Streamlining Interconnection and Managing...

  6. Sandia National Laboratories: Solar

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

    Mesa del Sol, Microgrid, News, News & Events, Partnership, Photovoltaic, Renewable Energy, SMART Grid, Solar, Systems Analysis, Systems Engineering The Mesa del Sol...

  7. Sandia National Laboratories: Solar

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

    Security, News, News & Events, Nuclear Energy, Photovoltaic, Renewable Energy, Solar, Transportation Energy, Wind Energy Sandia has more than a dozen scientists and...

  8. Sandia National Laboratories: Solar

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

    recent successes with metal-organic framework (MOF) materials by combining them with dye-sensitized solar cells (DSSCs). ... Page 2 of 1712345...10...Last Last Updated:...

  9. Sandia National Laboratories: solar

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

    solar Storing Hydrogen Underground Could Boost Transportation, Energy Security On February 26, 2015, in Capabilities, Center for Infrastructure Research and Innovation (CIRI),...

  10. Sandia National Laboratories: solar

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

    2011 issue of Innovation Magazine. Glitter-Sized Photovoltaic Cells in Utility-Scale Solar Power Systems On October 17, 2011, in Energy, News, Photovoltaic, Renewable Energy,...

  11. Prison Solar Project

    Broader source: Energy.gov [DOE]

    Presentation covers the Prison Solar Project for the Federal Utility Partnership Working Group (FUPWG) meeting, held on November 18-19, 2009.

  12. The Sundyne Solar Cooker

    SciTech Connect (OSTI)

    Long, J.B.

    1992-11-23T23:59:59.000Z

    Problems involved in obtaining the results from a program for user testing of 150 solar cookers in Haitian villages since the coup are detailed.

  13. Passive solar space heating

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1980-01-01T23:59:59.000Z

    An overview of passive solar space heating is presented indicating trends in design, new developments, performance measures, analytical design aids, and monitored building results.

  14. Passive solar design handbook

    SciTech Connect (OSTI)

    Jones, R.W.

    1981-01-01T23:59:59.000Z

    The Passive Solar Design Handbook, Volume Three updates Volume Two by presenting extensive new data on the optimum mix of conservation and solar direct gain, sunspaces, thermal storage walls, and solar radiation. The direct gain, thermal storage wall, and solar radiation data are greatly expanded relative to the Volume 2 coverage. The needed flexibility to analyze a variety of system designs is accommodated by the large number of reference designs to be encompassed - 94 in contrast to 6 in Volume two - and the large amount of sensitivity data for direct gain and sunspace systems - approximately 1100 separate curves.

  15. Solar Energy Materials & Solar Cells 91 (2007) 13881391 Bifacial configurations for CdTe solar cells

    E-Print Network [OSTI]

    Romeo, Alessandro

    2007-01-01T23:59:59.000Z

    Solar Energy Materials & Solar Cells 91 (2007) 13881391 Bifacial configurations for CdTe solar We present a different back contact for CdTe solar cell by the application of only a transparent that acts as a free-Cu stable back contact and at the same time allows to realize bifacial CdTe solar cells

  16. Concentrating Solar Power: Solar Energy Technologies Program (SETP) (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-10-01T23:59:59.000Z

    Fact sheet summarizing the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

  17. EIS-0454: Tonopah Solar Energy Crescent Dunes Solar Energy Project...

    Office of Environmental Management (EM)

    in Nye County, NV Documents Available for Download February 11, 2011 EIS-0454: Final Environmental Impact Statement Tonopah Solar Energy Crescent Dunes Solar Energy Project...

  18. EA-1683: Abengoa Solar's Solana Concentrating Solar Power Facility...

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

    Solana Concentrating Solar Power Facility, Gila Bend, AZ May 3, 2010 EA-1683: Final Environmental Assessment Loan Guarantee to Abengoa Solar Inc. for the Solana Thermal...

  19. Passive Solar Building Design and Solar Thermal Space Heating Webinar

    Broader source: Energy.gov [DOE]

    Webinar of National Renewable Energy Laboratory (NREL) Senior Engineer Andy Walker's presentation about passive solar building design and solar thermal space heating technologies and applications.

  20. Berkeley, California: Solar in Action (Brochure), Solar America...

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

    Berkeley, California Includes case studies on: * Smart Solar Independent Client Advising Service * BerkeleyFIRST-A Property Assessed Clean Energy Financing Program * Berkeley Solar...