Sample records for activities solar decathlon

  1. Solar Decathlon | Department of Energy

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

    Solar Decathlon Solar Decathlon In the video above, Lakiya Culley talks about how her solar-powered, passive home, which was donated to Habitat for Humanity by a Solar Decathlon...

  2. Solar Decathlon 2009 (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2009-04-01T23:59:59.000Z

    This brochure provides key information about Solar Decathlon 2009--the dates, the background of the competition and event, and where to go for more information.

  3. Solar Decathlon: Powered by the Sun (Revised)

    SciTech Connect (OSTI)

    Not Available

    2005-08-01T23:59:59.000Z

    The Solar Decathlon is a collegiate competition to design and build the most energy efficient, solar-powered house. It is also an event on the National Mall in Washington D.C. to which the public is invited. This gatefold brochure describes the Solar Decathlon 2005 competition and event, including a schedule of activities.

  4. 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 Data Center Home Page on Delicious RankCombustion |Energy Usage » SearchEnergyDepartmentScoping Study |4 Solar Background Document 4U.S.

  5. Solar Decathlon 2005

    SciTech Connect (OSTI)

    Warner, C.; Nahan, R.; King, R.

    2005-01-01T23:59:59.000Z

    Solar Decathlon 2005 is a U.S. Department of Energy and National Renewable Energy Laboratory competition involving 19 colleges and universities from the United States, Canada, and Spain. These teams will compete to design, build, and demonstrate solar homes. In fall 2005, teams will transport their competition solar houses to Washington, D.C., where they will construct a solar village on the National Mall. When the houses are assembled, the teams will compete against each other in 10 contests (hence, a decathlon) for about a week. The contests range from design to comfort to energy performance. Each team must provide an aesthetically pleasing entry that produces sufficient solar energy for space conditioning, hot water, lighting, appliances, and an electric car. The Solar Decathlon is co-sponsored by BP, The Home Depot, the American Institute of Architects, the National Association of Home Builders, and the DIY Network. For more information, visit the Web site at www.solardecathlon.org.

  6. 2005 Solar Decathlon (Competition Program)

    SciTech Connect (OSTI)

    Not Available

    2005-10-01T23:59:59.000Z

    The 2005 Solar Decathlon Competition Program is distributed to Solar Decathlon visitors, media, sponsors, and the student competitors. It contains basic facts about the Solar Decathlon: what, where, when, who, and how. It is a guide for visitors to the events and workshops. It describes the 10 contests and the technologies used in the houses. It celebrates the accomplishments of the competitors and provides an opportunity for the major sponsors to describe their roles and relay their commitment to the ideals of the Solar Decathlon.

  7. Solar Decathlon Technology Spotlight: Structural Insulated Panels...

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

    Decathlon Technology Spotlight: Structural Insulated Panels Solar Decathlon Technology Spotlight: Structural Insulated Panels September 20, 2011 - 7:13am Addthis These structural...

  8. Solar Decathlon 2013

    SciTech Connect (OSTI)

    Lewis, Chandra; Ouyang, Derek; Brown, Victoria; Ainsworth, Claire; Lee, Daniel; King, Richard; ,

    2013-10-22T23:59:59.000Z

    The Solar Decathlon is a perfect example of how the Energy Department is training and inspiring the next generation of architects, engineers and entrepreneurs. The two-year competition challenges collegiate teams to build energy-efficient, solar-powered houses. Over the course of the competition, students gain hands-on experience in everything from fundraising and marketing to design and construction. Showcasing their houses to the general public allows students to get feedback on their designs and how they work in the real world -- something that many of them would never get in the classroom.

  9. Solar Decathlon 2013

    ScienceCinema (OSTI)

    Lewis, Chandra; Ouyang, Derek; Brown, Victoria; Ainsworth, Claire; Lee, Daniel; King, Richard;

    2014-01-10T23:59:59.000Z

    The Solar Decathlon is a perfect example of how the Energy Department is training and inspiring the next generation of architects, engineers and entrepreneurs. The two-year competition challenges collegiate teams to build energy-efficient, solar-powered houses. Over the course of the competition, students gain hands-on experience in everything from fundraising and marketing to design and construction. Showcasing their houses to the general public allows students to get feedback on their designs and how they work in the real world -- something that many of them would never get in the classroom.

  10. Solar Decathlon | Department of Energy

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

    13, 2013 8:45PM EDT Orange County Great Park, Irvine California The U.S. Department of Energy Solar Decathlon is an award-winning program that challenges collegiate teams to...

  11. Shedding Light on the Solar Decathlon 2013 Teams | Department...

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

    Shedding Light on the Solar Decathlon 2013 Teams Shedding Light on the Solar Decathlon 2013 Teams August 29, 2012 - 10:13am Addthis Meet the teams competing in the Solar Decathlon...

  12. Secretary Chu Visits the 2011 Solar Decathlon

    Broader source: Energy.gov [DOE]

    Secretary Chu visited the 2011 Solar Decathlon to hear from students about their energy-efficient, solar powered homes. Watch the video!

  13. Solar Decathlon: Appalachian State Wins People's Choice Award...

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

    Decathlon: Appalachian State Wins People's Choice Award Solar Decathlon: Appalachian State Wins People's Choice Award October 3, 2011 - 10:38am Addthis On Friday, Sept. 30, 2011,...

  14. Solar Decathlon | Department of Energy

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

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

  15. Solar Decathlon 2005: The Event in Review

    SciTech Connect (OSTI)

    Moon, S.; Nahan, R.; Warner, C.; Wassmer, M.

    2006-06-01T23:59:59.000Z

    Solar Decathlon 2005: The Event in Review is a technical report describing the 2005 Solar Decathlon, an event sponsored by the U.S. Department of Energy wherein 18 collegiate teams competed in 10 contests to design, build, and operate an attractive, efficient, entirely solar-powered home. The report gives an overview of the competition, including final results, team strategies, and detailed descriptions the 18 homes.

  16. Solar Decathlon Update from Secretary Chu

    ScienceCinema (OSTI)

    Chu, Steven

    2013-05-29T23:59:59.000Z

    Secretary Steven Chu provides his insights on the 2009 Solar Decathlon in Washington, DC. To view each of the houses in this year's competition and vote for your favorite, visit http://www.solardecathlon.org/virtual_tours/

  17. Housing Innovation Awards at the Solar Decathlon

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

    the Energy Efficiency Market Buildings.Energy.gov Housing Innovation Awards at the Solar Decathlon Breakfast Presented by BASF Friday, October 4, 2013 8:30-10:30 a.m. Historic...

  18. Solar Decathlon 2011, (Small Program)(Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-11-01T23:59:59.000Z

    This brochure provides a high-level overview of the U.S. Department of Energy Solar Decathlon 2011. The competition's background, purpose, impact, 10 contests, 20 teams, and where to go for additional information.

  19. Solar Decathlon 2013: Let the Building Begin | Department of...

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

    Solar Decathlon 2013: Let the Building Begin Solar Decathlon 2013: Let the Building Begin September 30, 2013 - 10:45am Addthis Day 7 Construction 1 of 22 Day 7 Construction During...

  20. 2007 Solar Decathlon: Powered by the Sun (Competition Program)

    SciTech Connect (OSTI)

    Not Available

    2007-09-01T23:59:59.000Z

    The 2007 Solar Decathlon Competition Program is distributed to Solar Decathlon visitors, media, sponsors, and the student competitors. It contains basic facts about the Solar Decathlon: what, where, when, who, and how. It is a guide for visitors to the events and workshops. It describes the 10 contests and the technologies used in the houses. It celebrates the accomplishments of the competitors and provides an opportunity for the major sponsors to describe their roles and relay their commitment to the ideals of the Solar Decathlon.

  1. ABOUT THE SOLAR DECATHLON The U.S. Department of Energy Solar Decathlon is an award-winning program

    E-Print Network [OSTI]

    Sze, Lawrence

    ABOUT THE SOLAR DECATHLON The U.S. Department of Energy Solar Decathlon is an award-winning program that challenges collegiate teams to design, build and operate solar-powered houses that are cost-effective, energy-efficient and attractive. The competition shows consumers how to save money and energy with affordable clean energy

  2. NREL: Technology Deployment - Solar Decathlon

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

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

  3. New Location for Solar Decathlon 2011 Announced | Department...

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

    solar-powered houses that are cost-effective, energy-efficient and attractive. The first Solar Decathlon was held in 2002. Since then, they've been held biennially in 2005,...

  4. Solar Decathlon Team Using Appalachian Mountain History to Model...

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

    Using Appalachian Mountain History to Model Home of the Future Solar Decathlon Team Using Appalachian Mountain History to Model Home of the Future March 31, 2011 - 10:52am Addthis...

  5. Solar Decathlon Team Leading the Way Toward Sustainable Living...

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

    Leading the Way Toward Sustainable Living, Even in the Wake of Disasters Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of Disasters August 18,...

  6. Solar Decathlon Teams Working Around the Clock to Assemble Homes...

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

    Teams Working Around the Clock to Assemble Homes For Competition Solar Decathlon Teams Working Around the Clock to Assemble Homes For Competition September 14, 2011 - 12:59pm...

  7. Smart Meters Help Balance Energy Consumption at Solar Decathlon

    Office of Energy Efficiency and Renewable Energy (EERE)

    Clouds, rain, thunderstorms… at Solar Decathlon Village? Oh my, you may say. But less-than-ideal weather conditions are no match for this year's teams, thanks to smart grid technology that is helping them monitor their energy consumption.

  8. Here Comes the Sun: Solar Decathlon Opens To Public Today | Department...

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

    Here Comes the Sun: Solar Decathlon Opens To Public Today Here Comes the Sun: Solar Decathlon Opens To Public Today September 23, 2011 - 12:53pm Addthis At the National Mall's West...

  9. Solar Decathlon Entry Uses iPad to Monitor Home | Department...

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

    competition. The University of Tennessee, Knoxville is participating in its first Solar Decathlon competition, featuring its home, "Living Light." Named for its very...

  10. U.S. DEPARTMENT OF ENERGY SOLAR DECATHLON 2011 NEW ZEALAND VICTORIA UNIVERSITY OF WELLINGTON

    E-Print Network [OSTI]

    Frean, Marcus

    U.S. DEPARTMENT OF ENERGY SOLAR DECATHLON 2011 NEW ZEALAND ­ VICTORIA UNIVERSITY OF WELLINGTON #12 of Energy Solar Decathlon. Led by students from the School of Architecture, our team comprises students from into the mountains. #12;4 5 SOLAR CONTROL DESIGN FEATURES The First Light house is a net zero energy dwelling

  11. Team Massachusetts Brings a Fourth Dimension to the Solar Decathlon

    Broader source: Energy.gov [DOE]

    Team Massachusetts is bringing a unique perspective to the Solar Decathlon this fall. You might say it is a fourth dimension because of the team’s newly constructed 4D Home. But it could also be argued that it is because the Massachusetts College of Art and Design and University of Massachusetts Lowell are collaborating for the team’s first entry into the biannual competition, and they’re both public institutions.

  12. 2009 Solar Decathlon Winners Announced | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energyon ArmedWaste and Materials Disposition#EnergyFaceoff1 1Electricity2009 Solar Decathlon

  13. Solar Decathlon 2013: Let the Building Begin | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energyof the Americas |DOEEnergy Smooth BromeSoftware Tools1SolarDecathlon

  14. Solar Decathlon at Home in the D.C. Community | Department of...

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

    at Home in the D.C. Community Solar Decathlon at Home in the D.C. Community December 4, 2012 - 4:25pm Addthis One of the new homeowners, Layika Culley, and her family cut the...

  15. Solar Decathlon Homes -- They're Not Just for Show | Department...

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

    Homes -- They're Not Just for Show Solar Decathlon Homes -- They're Not Just for Show December 13, 2012 - 4:01pm Addthis Cornells 2009 Silo House is now a private residence...

  16. Solar Decathlon 2011, The National Mall, Washington, D.C., Fall 2011 (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-04-01T23:59:59.000Z

    This brochure provides a high-level overview of the U.S. Department of Energy Solar Decathlon 2011-the competition's background, purpose, impact, 10 contests, 20 teams, and where to go for additional information.

  17. Officers for 2012-2013 School Year 2013 Solar Decathlon Advisor: Dr. Hight

    E-Print Network [OSTI]

    Holliday, JoAnne

    Officers for 2012-2013 School Year 2013 Solar Decathlon Advisor: Dr. Hight Project Manager - Jake_g@yahoo.com Workload/Project Management Leader ­ Nicole Pal npal@scu.edu Amateur Radio Club ­ SCUARC Advisor: Dr. Kitts Engineers ­ ASCE Advisors: Dr. Serrette & Dr. He President ­ Hayley Dickson hgdickson22@gmail.com VP ­ Satej

  18. Online National Solar Energy Directory and 2005 Solar Decathlon Product Directory

    SciTech Connect (OSTI)

    Julia Hamm; Mike Taylor; America Solar Energy Society

    2005-07-01T23:59:59.000Z

    The Solar Electric Power Association (SEPA), in partnership with the American Solar Energy Society, developed an online National Solar Energy Directory with clear, comprehensive information on suppliers and purchasing options. The site was originally located at FindSolar.com, but has recently been moved to Find-Solar.org. The original FindSolar.com domain name has been taken by the American Solar Energy Society (a partner in this project) and utilized for a similar but different project. This Find-Solar.org directory offers the rapidly growing base of potential solar customers a simple, straightforward destination to learn about their solar options. Members of the public are able to easily locate contractors in their geographic area and verify companiesâ?? qualifications with accurate third-party information. It allows consumers to obtain key information on the economics, incentives, desirability, and workings of a solar energy system, as well as competing quotes from different contractors and reviews from customers they have worked with previously. Find-Solar.org is a means of facilitating the growing public interest in solar power and overcoming a major barrier to widespread development of U.S. solar markets. In addition to the development of Find-Solar.org, SEPA developed a separate online product directory for the 2005 DOE Solar Decathlon to facilitate the communication of information about the energy efficiency and renewable energy products used in each university teamâ??s home.

  19. Analysis of the passive design and solar collection techniques of the houses in the 2009 U.S. Department of Energy's Solar Decathlon competition.

    E-Print Network [OSTI]

    Lentz, Timothy Robert

    2010-01-01T23:59:59.000Z

    ??The U.S. Department of Energy‘s Solar Decathlon is a competition in which twenty university teams compete to design and build the best completely solar powered… (more)

  20. Design and Performance of Solar Decathlon 2011 High-Penetration Microgrid: Preprint

    SciTech Connect (OSTI)

    Stafford, B.; Coddington, M.; Butt, R.; Solomon, S.; Wiegand, G.; Wagner, C.; Gonzalez, B.

    2012-04-01T23:59:59.000Z

    The U.S. Department of Energy Solar Decathlon challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The Solar Decathlon 2011 was held in Washington, D.C., from September 23 to October 2, 2011 . A high-penetration microgrid was designed, installed, and operated for the Solar Decathlon 2011 to grid-connect 19 highly energy-efficient, solar-powered competition houses to a single utility connection point. The capacity penetration of this microgrid (defined as maximum PV generation divided by maximum system load over a two-week period) was 74% based on 1-minute averaged data. Temporary, ground-laid conductors and electrical distribution equipment were installed to grid-connect the Solar Decathlon village, which included the houses as well as other electrical loads used by the event organizers. While 16 of the houses were connected to the 60 Hz microgrid, three houses from Belgium, China, and New Zealand were supplied with 50 Hz power. The design of the microgrid, including the connection of the houses powered by 50 Hz and a standby diesel generator, is discussed in this paper. In addition to the utility-supplied net energy meters at each house, a microgrid monitoring system was installed to measure and record energy consumption and PV energy production at 1-second intervals at each house. Bidirectional electronic voltage regulators were installed for groups of competition houses, which held the service voltage at each house to acceptable levels. The design and successful performance of this high-penetration microgrid is presented from the house, microgrid operator, and utility perspectives.

  1. Solar Decathlon: Rain and Shine | Department of Energy

    Energy Savers [EERE]

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

  2. Supporting Diversity at the Solar Decathlon | Department of Energy

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

    with monitoring capabilities that allows homeowners to monitor energy production and use, solar panel performance, and water consumption. After the competition, the house will be...

  3. Illuminating Solar Decathlon Homes: Exploring Next Generation Lighting Technology - Light Emitting Diodes

    SciTech Connect (OSTI)

    Gordon, Kelly L.; Gilbride, Theresa L.

    2008-05-22T23:59:59.000Z

    This report was prepared by PNNL for the US Department of Energy Building Technologies Program, Solid-State Lighting Program. The report will be provided to teams of university students who are building houses for the 2009 Solar Decathlon, a home design competition sponsored in part by DOE, to encourage teams to build totally solar powered homes. One aspect of the competition is lighting. This report provides the teams with information about LED lighting that can help them determine how they incorporate LED lighting into their homes. The report provides an overview of LED technology, a status of where LED technology is today, questions and answers about lighting quality, efficiency, lifetime etc.; numerous examples of LED products; and several weblinks for further research.

  4. Team Canada Returns to the Solar Decathlon with First Nation...

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

    home's solar PV panels will result in an annual net-zero energy balance to ease rising energy costs in remote communities. The team used building materials that are extremely...

  5. Solar Decathlon Design Places People and the Outdoors at its...

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

    their clean energy take on a time-honored tradition. Addthis Related Articles "First Light," the solar home from New Zealand, stands complete on the first day of the 2011 U.S....

  6. Solar Decathlon: How far did they travel? | Department of Energy

    Energy Savers [EERE]

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

  7. Energy Department Announces Student Teams, New Location for Solar Decathlon

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehiclesTanklessDOJ TitleDr. StevenSolarResearch and Development

  8. Solar Decathlon 2013: Life After the Competition | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage » SearchEnergyDepartmentScoping Study |4 Solar Background Document

  9. Solar Decathlon 2013: Meet the Teams | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage » SearchEnergyDepartmentScoping Study |4 Solar Background DocumentMeet the

  10. Secretary Chu Congratulates Solar Decathlon Winners | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf11-161-LNG |September2-SCORECARD-01-24-13 PageUraniumDepartmentElectricNorthSolar

  11. University of Colorado Wins 2005 Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research Petroleum ReserveDepartment ofEnergy, OfficeDepartment ofDepartment ofSolar

  12. U.S. Department of Energy Solar Decathlon: Challenging Students to Build Energy Efficient, Cost-Effective, and Attractive Solar-Powered Houses

    SciTech Connect (OSTI)

    Simon, J.

    2012-01-01T23:59:59.000Z

    The U.S. Department of Energy Solar Decathlon challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The winner of the competition is the team that best blends affordability, consumer appeal, and design excellence with optimal energy production and maximum efficiency. The paper discusses the solutions developed for the event. We believe that the solutions implemented for Solar Decathlon 2011 represent current trends and that by analyzing, critiquing, and exposing the solutions pursued, the industry can become better suited to address challenges of the future. Constructing a solar community using high-efficiency design and unique materials while remaining code compliant, safe, and effective results in solutions that are market relevant, important, and interesting to the industry as a whole.

  13. Solar Decathlon Visitors Guide 2011, National Mall, West Potomac Park, Washington, D.C., September 23 - October 2, 2011 (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-09-01T23:59:59.000Z

    Guide to the student-designed houses, ten contests, exhibits, and workshops of the U.S. Department of Energy 2011 Solar Decathlon, held in Washington, D.C., from September 23 through October 2, 2011. Teams of college students designed and built the solar-powered houses on display here. They represent 13 U.S. states, five countries, and four continents. Now the teams are rising to the challenge by competing in 10 contests over nine days, with the championship trophy on the line. This is their time to shine. The 2011 teams may share a common goal - to design and build the best energy-efficient house powered by the sun - but their strategies are different. One house is made of precast concrete, while another 'dances' in response to its environment. Another house is meant to sit atop a building, proving the sky's the limit for energy innovation. Whatever your idea of sustainable living may be, you are bound to find it at the Solar Decathlon.

  14. Solar Decathlon 2013: Raising More Than Just Walls | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage » SearchEnergyDepartmentScoping Study |4 Solar Background DocumentMeet

  15. Solar Decathlon 2013: Designing the Houses of Today | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage » SearchEnergyDepartmentScoping Study |4 Solar Background Document 4U.S.1

  16. U.S. and Spain to Develop Solar Decathlon Europe | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment of Dept. of Energy, OfficeDepartment ofSpain to Develop Solar

  17. Design, Construction, Transportation, Operation and Post-Occupancy Analysis for the Texas A&M Solar Decathlon House

    E-Print Network [OSTI]

    Malhotra, M.; Ramirez, E.; Im, P.; Cho, S.; Canez, J.; Haberl, J.; Schaider, N.; Fisk, P.; Feigenbaum, L.

    configurations, yet be completely powered from the solar radiation that falls on the footprint of the structure. To accomplish this, the Texas A&M team designed and simulated varying designs using building energy simulation (DOE-2), solar thermal analysis (F...

  18. Engineering Design, Construction, Operation and Analysis of the 2007 Texas A&M University Solar Decathlon House

    E-Print Network [OSTI]

    Ramirez, Eduardo

    2008-06-10T23:59:59.000Z

    This report presents the design, construction, and operation of a 100% solar-powered house from an engineering perspective. This includes energy simulation results, selection of systems, design of systems, assembly of systems, integration between...

  19. Engineering Design, Construction, Operation and Analysis of the 2007 Texas A&M University Solar Decathlon House

    E-Print Network [OSTI]

    Ramirez, E. J.

    This report presents the design, construction, and operation of a 100% solar-powered house from an engineering perspective. This includes energy simulation results, selection of systems, design of systems, assembly of systems, integration between...

  20. Solar Decathlon | Department of Energy

    Energy Savers [EERE]

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

  1. and solar activity

    E-Print Network [OSTI]

    Memorie Della; K. Georgieva; C. Bianchi; B. Kirov

    Abstract. Solar activity, together with human activity, is considered a possible factor for the global warming observed in the last century. However, in the last decades solar activity has remained more or less constant while surface air temperature has continued to increase, which is interpreted as an evidence that in this period human activity is the main factor for global warming. We show that the index commonly used for quantifying long-term changes in solar activity, the sunspot number, accounts for only one part of solar activity and using this index leads to the underestimation of the role of solar activity in the global warming in the recent decades. A more suitable index is the geomagnetic activity which reflects all solar activity, and it is highly correlated to global temperature variations in the whole period for which we have data. Key words. Solar activity, Global warming 1. Sunspot number and global temperature The most popular index of solar activity is the International sunspot number (R). A reconstruction

  2. The Texas Solar D House

    E-Print Network [OSTI]

    Garrison, M.

    2004-01-01T23:59:59.000Z

    The Solar Decathlon provided a national forum for competition among fourteen university student teams, each of which designed, built, and operated a totally solar-powered home with a home office and their transportation needs using a solar...

  3. Solar News | Department of Energy

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

    Solar News Solar News RSS March 11, 2014 U.S. and Colombia to Collaborate on First Solar Decathlon in Latin America U.S. Deputy Secretary of Energy Daniel Poneman, Colombia's...

  4. Energy Department Announces Student Teams, New Location for Solar...

    Office of Environmental Management (EM)

    California (Los Angeles, Calif.) Vienna University of Technology (Vienna, Austria) West Virginia University (Morgantown, W. Va.) Follow the progress of Solar Decathlon 2013...

  5. The Ohio State University Readies for its Encore at the Solar...

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

    January 12-15, 2011. | Credit: All Commercial PhotographyU.S. Department of Energy Solar Decathlon The Ohio State University displayed their design model at the International...

  6. Solar Decathlon 2013: New Teams! New Location!

    Broader source: Energy.gov [DOE]

    In addition to welcoming 20 new collegiate teams and hundreds of new student decathletes to our 2013 competition, we are announcing a new site.

  7. Solar Decathlon Technology Spotlight: Structural Insulated Panels |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment of Energy U.S. DepartmentCommitmentGovernmentSmartDay 7 Construction 1 of

  8. Solar Decathlon Turns Ten | Department of Energy

    Energy Savers [EERE]

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

  9. Solar Decathlon Opening | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research |RegulationRenewable Energy (EERE)SmartRemarks PreparedRSS

  10. Decathletes Demonstrate Affordable Solar Housing

    Broader source: Energy.gov [DOE]

    Two teams tied for first place in the first-ever Affordability Contest at the 2011 Solar Decathlon -- demonstrating that innovative technology doesn’t have to be expensive.

  11. Solar Decathletes Inspire Today's Green Builders and Tomorrow...

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

    Washington, D.C., Friday, Sept. 30, 2011. | Photo by Stefano PalteraU.S. Department of Energy Solar Decathlon Recognizing Innovation in Green Building Day 7 Construction Solar...

  12. Petrovay: Solar physics The solar cycle ACTIVE REGIONS

    E-Print Network [OSTI]

    Petrovay, Kristóf

    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

  13. 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.

  14. The 2005 Solar D House

    E-Print Network [OSTI]

    Garrison, M.

    2006-01-01T23:59:59.000Z

    , each of which designed, built, and operated a totally solar-powered home with a home office and their transportation needs using a solar-charged vehicle. Organized by the U.S. Department of Energy and the National Renewable energy Laboratory..., the Solar Decathlon competition challenges university teams to design and build an 800-square foot, totally solar-powered house. The competition took place on the National Mall in Washington D.C., where each house was constructed and operated from...

  15. What Do You Think About Solar Decathlon? | Department of Energy

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

    event and reminded us why DOE sponsors this bi-annual event: Because the results can transform the world by using today's renewable technology to build the houses of tomorrow. Did...

  16. Energy Department Announces Student Teams for Solar Decathlon...

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

    (Florida) The University of Texas at Austin and Technische Universitaet Muenchen (Germany) University at Buffalo, The State University of New York University of California,...

  17. Solar Decathlon Update from Secretary Chu | Department of Energy

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

    universe that you can spend 80 hours a week building a home like this with your own brain, your own hands, and still go to school. But it's fabulous. It shows how exciting...

  18. A Solar Decathlon Entry for Historic Norfolk | Department of...

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

    18 percent, the panels act as a main power source. In addition, light switches powered by remote transmitters can be placed anywhere in the house and never require replacement...

  19. DOE Solar Decathlon Coming to National Mall | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA - U.S. Department ofThe U.S. DepartmentContract atEnergyEarly

  20. DOE's Solar Decathlon to Highlight Innovation, Future Green Jobs |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA - U.S. Departmentto Develop Next-GenerationEnergy

  1. Department of Energy Considers New Venue for Solar Decathlon 2013 |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA - U.S.Development ProjectsCompleted Demo Project in OakDepartment

  2. Construction Begins for Solar Decathlon 2011 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth Codestheatfor Optimized91

  3. Housing Innovation Awards at the Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.ProgramJulietip sheetK-4In 2013 many|HumansDepartmentEricHousing Innovation

  4. Affordability Contest Adds New Dimension to Solar Decathlon 2011 |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' ResearchThe Office ofReportingEnergy AdvancedAeroSysNNC_3-25.pdf MoreDepartment

  5. German Technische Universitat Darmstadt Wins DOE's 2007 Solar Decathlon |

    Office of Environmental Management (EM)

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

  6. 2011 Solar Decathlon - The Volunteer's Perspective | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustionImprovement Awardflash2007-42attachment1.pdfmodule(EE) |the Fuel Cell Technologies ProgramFEE

  7. Miami Students' Solar Decathlon Design Focused on Sustainability |

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdfGeorgeDoesn't32 Master EM ProjectMemoDepartmentFY 2010 Methane(June 2008)

  8. October 14, 2005: 2005 Solar Decathlon | Department of Energy

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

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

  9. University of Maryland Solar Decathlon Team Celebrates with a...

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

    students, if only briefly, to stop for a moment and celebrate their accomplishments in sustainable design. As Allison said, "It's incredibly gratifying to see something we drew...

  10. Energy Department Announces Second Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergyIDIQBusiness Competition | Department of Energy RegionalSecond

  11. Energy, Interior Departments Announce New Location for Solar Decathlon 2011

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergyIDIQBusinessinSupporting JobsClean Energy and Strengthenfrom|

  12. 2007 Solar Decathlon Closing Ceremony and Awards | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energyon ArmedWaste and Materials Disposition#EnergyFaceoff1 1Electricity Supply07 Annual2007

  13. Energy Department Announces Student Teams for Solar Decathlon 2015 |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.Program -Department of

  14. Smart Meters Help Balance Energy Consumption at Solar Decathlon |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on Energy andDepartment ofAn AudienceEnergy

  15. Solar Decathlon 2013: Let the Building Begin | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on Energy andDepartment ofAnShare your opinionsCD-4),|Day 7

  16. Solar Decathlon 2013: Meet the Teams | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on Energy andDepartment ofAnShare your opinionsCD-4),|Day

  17. Solar Decathlon Design Models 2009 | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on Energy andDepartment ofAnShare your

  18. Energy Department Announces Student Teams, Location for Solar Decathlon

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA, GA5 & 6, 2012 MEETINGPreparednessHanford's2015 | Department of

  19. Solar Decathlon 2011: The Visitor's Perspective | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment of Energy U.S. DepartmentCommitmentGovernmentSmart CitiesChineseChartRSS

  20. Solar Decathlon 2013 Infographic: The Path to a Brighter Future |

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

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

  1. Solar Decathlon Opening Ceremony and VIP Ribbon Cutting | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research |RegulationRenewable Energy (EERE)SmartRemarks PreparedRSS AprilLocation

  2. Solar Decathlon 2013: Building Skills for Future Careers | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment ofat HomeAssurance:

  3. Solar Decathlon 2013: Going the Distance | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment ofat HomeAssurance:Designing the Houses

  4. Solar Decathlon 2015: Let the Competition Begin | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment ofat HomeAssurance:Designing theMeet5: Let

  5. Solar Decathlon house continues to yield data | ornl.gov

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment ofat HomeAssurance:Designing

  6. Are You Attending Solar Decathlon This Year? | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' ResearchTheMarketing, Inc. | Department Training April 30, 2008 TrainingAmanda

  7. Middlebury Students Practice 'Self-Reliance' with Solar Decathlon...

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

    become carbon neutral by 2016. The campus also houses a new biomass plant, which boasts a gasification system that converts regionally grown wood chips into gas, which it then...

  8. Gap between active and passive solar heating

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1985-01-01T23:59:59.000Z

    The gap between active and passive solar could hardly be wider. The reasons for this are discussed and advantages to narrowing the gap are analyzed. Ten years of experience in both active and passive systems are reviewed, including costs, frequent problems, performance prediction, performance modeling, monitoring, and cooling concerns. Trends are analyzed, both for solar space heating and for service water heating. A tendency for the active and passive technologies to be converging is observed. Several recommendations for narrowing the gap are presented.

  9. 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.

  10. Activ Solar | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORT Americium/Curium Vitrification ProjectAVANTI JumpPvt LtdSolar

  11. LANGMUIR WAVE ACTIVITY: COMPARING THE ULYSSES SOLAR MINIMUM AND SOLAR MAXIMUM ORBITS

    E-Print Network [OSTI]

    California at Berkeley, University of

    ). The top three panels correspond to the southern segment of the solar minimum orbit; repeated passesLANGMUIR WAVE ACTIVITY: COMPARING THE ULYSSES SOLAR MINIMUM AND SOLAR MAXIMUM ORBITS R. J at the electron plasma frequency) during the solar minimum and solar maximum orbits of Ulysses. At high latitudes

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

    E-Print Network [OSTI]

    California at Berkeley, University of

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

  13. Can origin of the 2400-year cycle of solar activity be caused by solar inertial motion?

    E-Print Network [OSTI]

    Boyer, Edmond

    Can origin of the 2400-year cycle of solar activity be caused by solar inertial motion? I. Charva 1999 / Revised: 14 January 2000 / Accepted: 17 January 2000 Abstract. A solar activity cycle of about 2400 years has until now been of uncertain origin. Recent results indicate it is caused by solar

  14. Energy Blog | Department of Energy

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

    at Urbana-Champaign Solar Decathlon Team. Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of Disasters For this year's Solar Decathlon, the...

  15. Emergency Response & Procedures | Department of Energy

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

    at Urbana-Champaign Solar Decathlon Team. Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the Wake of Disasters For this year's Solar Decathlon, the...

  16. Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra.

    E-Print Network [OSTI]

    Petrovay, Kristóf

    Petrovay: Solar physics Activity phenomena 1 SUNSPOTS Overall structure: umbra + penumbra in decaying spots (hysteresis-like behaviour). #12;Petrovay: Solar physics Activity phenomena 1 Temperature, H2, CH, CN Maltby effect: Umbrae slightly hotter in solar maximum than in minimum. Recent studies

  17. Performance of Civil Aviation Receivers during Maximum Solar Activity Events

    E-Print Network [OSTI]

    Boyer, Edmond

    Performance of Civil Aviation Receivers during Maximum Solar Activity Events Lina DEAMBROGIO on the fields of ionosphere scintillations, solar energetic particles and on the implementation of operational the upcoming period of high solar activity. Emilien ROBERT got his PhD in 2005 and started to work on behalf

  18. E-Print Network 3.0 - active solar systems Sample Search Results

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

    . ACTIVE SOLAR SYSTEMS Solar collectors are designed to take advan- tage of the greenhouse effect. The flat... " solar system (Figure 2). It is called active because it requires...

  19. E-Print Network 3.0 - active solar thermal Sample Search Results

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

    . ACTIVE SOLAR SYSTEMS Solar collectors are designed to take advan- tage of the greenhouse effect. The flat... " solar system (Figure 2). It is called active because it requires...

  20. Solar activity forecast with a dynamo model

    E-Print Network [OSTI]

    Jie Jiang; Piyali Chatterjee; Arnab Rai Choudhuri

    2007-07-16T23:59:59.000Z

    Although systematic measurements of the solar polar magnetic field exist only from mid 1970s, other proxies can be used to infer the polar field at earlier times. The observational data indicate a strong correlation between the polar field at a sunspot minimum and the strength of the next cycle, although the strength of the cycle is not correlated well with the polar field produced at its end. This suggests that the Babcock Leighton mechanism of poloidal field generation from decaying sunspots involves randomness, whereas the other aspects of the dynamo process must be reasonably ordered and deterministic. Only if the magnetic diffusivity within the convection zone is assumed to be high, we can explain the correlation between the polar field at a minimum and the next cycle. We give several independent arguments that the diffusivity must be of this order. In a dynamo model with diffusivity like this, the poloidal field generated at the mid latitudes is advected toward the poles by the meridional circulation and simultaneously diffuses towards the tachocline, where the toroidal field for the next cycle is produced. To model actual solar cycles with a dynamo model having such high diffusivity, we have to feed the observational data of the poloidal field at the minimum into the theoretical model. We develop a method of doing this in a systematic way. Our model predicts that cycle 24 will be a very weak cycle. Hemispheric asymmetry of solar activity is also calculated with our model and compared with observational data.

  1. Active Solar Heating | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles » Alternative FuelNewsWashington Auto ShowAtoActive Solar Heating

  2. E-Print Network 3.0 - active 8b solar Sample Search Results

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

    0 Summary: 12;Big Bear Solar Observatory 32 The Sun in XThe Sun in X--Ray LightRay Light Solar Activity MinimumSolar... Activity Minimum ----19961996 Solar Activity...

  3. 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.

  4. Solar activity and earth rotation variability R. Abarca del Rioa,

    E-Print Network [OSTI]

    Dai, Aiguo

    to secular times scales, meteorological and climatic data are correlated with solar variability (see reviews changes in solar output could be amplified in the Earth's atmosphere. In fact, at wavelengths not visibleSolar activity and earth rotation variability R. Abarca del Rioa, *, D. Gambisb , D. Salsteinc , P

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

    E-Print Network [OSTI]

    Webb, David F.

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

  6. Solar Energy Glossary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: AlternativeEnvironment,Institutes and ResponseStaffServicesFuture |AssuranceSolar Decathlon:

  7. The Solar Wind, CMEs and the Origins of Heliospheric Activity

    E-Print Network [OSTI]

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

  8. Annual DOE active solar heating and cooling contractors' review meeting. Premeeting proceedings and project summaries

    SciTech Connect (OSTI)

    None,

    1981-09-01T23:59:59.000Z

    Ninety-three project summaries are presented which discuss the following aspects of active solar heating and cooling: Rankine solar cooling systems; absorption solar cooling systems; desiccant solar cooling systems; solar heat pump systems; solar hot water systems; special projects (such as the National Solar Data Network, hybrid solar thermal/photovoltaic applications, and heat transfer and water migration in soils); administrative/management support; and solar collector, storage, controls, analysis, and materials technology. (LEW)

  9. Active solar heating and cooling information user study

    SciTech Connect (OSTI)

    Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

    1981-01-01T23:59:59.000Z

    The results of a series of telephone interviews with groups of users of information on active solar heating and cooling (SHAC). An earlier study identified the information user groups in the solar community and the priority (to accelerate solar energy commercialization) of getting information to each group. In the current study only high-priority groups were examined. Results from 19 SHAC groups respondents are analyzed in this report: DOE-Funded Researchers, Non-DOE-Funded Researchers, Representatives of Manufacturers (4 groups), Distributors, Installers, Architects, Builders, Planners, Engineers (2 groups), Representatives of Utilities, Educators, Cooperative Extension Service County Agents, Building Owners/Managers, and Homeowners (2 groups). The data will be used as input to the determination of information products and services the Solar Energy Research Institute, the Solar Energy Information Data Bank Network, and the entire information outreach community should be preparing and disseminating.

  10. Estimating electric current densities in solar active regions

    E-Print Network [OSTI]

    Wheatland, M S

    2015-01-01T23:59:59.000Z

    Electric currents in solar active regions are thought to provide the energy released via magnetic reconnection in solar flares. Vertical electric current densities $J_z$ at the photosphere may be estimated from vector magnetogram data, subject to substantial uncertainties. The values provide boundary conditions for nonlinear force- free modelling of active region magnetic fields. A method is presented for estimating values of $J_z$ taking into account uncertainties in vector magnetogram field values, and minimizing $J_z^2$ across the active region. The method is demonstrated using the boundary values of the field for a force-free twisted bipole, with the addition of noise at randomly chosen locations.

  11. NREL: International Activities - India Solar Resource Maps

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

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

  12. Correlation of Spectral Solar Irradiance with solar activity as measured by VIRGO

    E-Print Network [OSTI]

    Wehrli, C; Shapiro, A I

    2013-01-01T23:59:59.000Z

    Context. The variability of Solar Spectral Irradiance over the rotational period and its trend over the solar activity cycle are important for understanding the Sun-Earth connection as well as for observational constraints for solar models. Recently the SIM experiment on SORCE has published an unexpected negative correlation with Total Solar Irradiance of the visible spectral range. It is compensated by a strong and positive variability of the near UV range. Aims. We aim to verify whether the anti-correlated SIM/SORCE-trend in the visible can be confirmed by independent observations of the VIRGO experiment on SOHO. The challenge of all space experiments measuring solar irradiance are sensitivity changes of their sensors due to exposure to intense UV radiation, which are difficult to assess in orbit. Methods. We analyze a 10-year time series of VIRGO sun photometer data between 2002 and 2012. The variability of Spectral Solar Irradiance is correlated with the variability of the Total Solar Irradiance, which is...

  13. GLOBAL DYNAMICS OF SUBSURFACE SOLAR ACTIVE REGIONS

    SciTech Connect (OSTI)

    Jouve, L. [UPS-OMP, Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse CNRS, 14 Avenue Edouard Belin, F-31400 Toulouse (France)] [UPS-OMP, Institut de Recherche en Astrophysique et Planetologie, Universite de Toulouse CNRS, 14 Avenue Edouard Belin, F-31400 Toulouse (France); Brun, A. S. [Laboratoire AIM, CEA/DSM-CNRS-Universite Paris Diderot, IRFU/SAp, F-91191 Gif sur Yvette (France)] [Laboratoire AIM, CEA/DSM-CNRS-Universite Paris Diderot, IRFU/SAp, F-91191 Gif sur Yvette (France); Aulanier, G., E-mail: ljouve@irap.omp.eu [LESIA, Observatoire de Paris, CNRS, UPMC, Universite Paris-Diderot, 5 Place Jules Janssen, F-92190 Meudon Cedex (France)

    2013-01-01T23:59:59.000Z

    We present three-dimensional numerical simulations of a magnetic loop evolving in either a convectively stable or unstable rotating shell. The magnetic loop is introduced into the shell in such a way that it is buoyant only in a certain portion in longitude, thus creating an {Omega}-loop. Due to the action of magnetic buoyancy, the loop rises and develops asymmetries between its leading and following legs, creating emerging bipolar regions whose characteristics are similar to those of observed spots at the solar surface. In particular, we self-consistently reproduce the creation of tongues around the spot polarities, which can be strongly affected by convection. We further emphasize the presence of ring-shaped magnetic structures around our simulated emerging regions, which we call 'magnetic necklace' and which were seen in a number of observations without being reported as of today. We show that those necklaces are markers of vorticity generation at the periphery and below the rising magnetic loop. We also find that the asymmetry between the two legs of the loop is crucially dependent on the initial magnetic field strength. The tilt angle of the emerging regions is also studied in the stable and unstable cases and seems to be affected both by the convective motions and the presence of a differential rotation in the convective cases.

  14. THE MAGNETIC ENERGY-HELICITY DIAGRAM OF SOLAR ACTIVE REGIONS

    SciTech Connect (OSTI)

    Tziotziou, Kostas; Georgoulis, Manolis K. [Research Center for Astronomy and Applied Mathematics (RCAAM), Academy of Athens, 4 Soranou Efesiou Street, Athens, GR-11527 (Greece); Raouafi, Nour-Eddine [Johns Hopkins University Applied Physics Laboratory (JHU/APL), 11100 Johns Hopkins Rd. Laurel, MD 20723-6099 (United States)

    2012-11-01T23:59:59.000Z

    Using a recently proposed nonlinear force-free method designed for single-vector magnetograms of solar active regions, we calculate the instantaneous free magnetic energy and relative magnetic helicity budgets in 162 vector magnetograms corresponding to 42 different active regions. We find a statistically robust, monotonic correlation between the free magnetic energy and the relative magnetic helicity in the studied regions. This correlation implies that magnetic helicity, in addition to free magnetic energy, may be an essential ingredient for major solar eruptions. Eruptive active regions appear well segregated from non-eruptive ones in both free energy and relative helicity with major (at least M-class) flares occurring in active regions with free energy and relative helicity exceeding 4 Multiplication-Sign 10{sup 31} erg and 2 Multiplication-Sign 10{sup 42} Mx{sup 2}, respectively. The helicity threshold agrees well with estimates of the helicity contents of typical coronal mass ejections.

  15. Hangout with Solar Decathlon 2013 Teams on Sept. 18 at 2 pm ET | Department

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGY TAX POLICIES7.pdfFuel Celland Contractors |DOCUMENT RELEASE FORM !andDepartmentofof

  16. Purdue's "INhome" Rallies for the Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Careerlumens_placard-green.epsEnergy1.pdfMarket37963 Vol. 79,Department ofPurdue's INhome team at

  17. Secretary Chu to Speak at Solar Decathlon 2011 Awards Ceremony | Department

    Energy Savers [EERE]

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

  18. Setting the Stage for the Next Solar Decathlon | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energyof the Americas |DOE Former Worker/Energy Compensation3SeptemberSetting

  19. Come for Solar Decathlon, Stay for the Clean Energy XPO | Department of

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: Top FiveDepartment ofCarrieof Energyby Frito-Lay North America, June 2011

  20. Energy Department Selects Student Teams to Compete in 2009 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 Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergyIDIQBusiness CompetitionDepartmentandDepartmentCareerEnergyPaducahNew|

  1. Solar Decathlon at Home in the D.C. Community | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on Energy andDepartment ofAnShare yourA New Energy-Efficient

  2. U.S. Department of Energy Solar Decathlon | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe House Committee on EnergyEnergyThe sunCommerce EconomicsDepartment ofPhoto

  3. Solar Decathlon Team Leading the Way Toward Sustainable Living, Even in the

    Energy Savers [EERE]

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

  4. Solar Decathlon 2011 Opens To Media This Week | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research |RegulationRenewable Energy (EERE)SmartRemarks PreparedRSS AprilLocation of

  5. University of Maryland's "WaterShed" Wins 2011 Solar Decathlon | Department

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research Petroleum ReserveDepartment ofEnergy, OfficeDepartmentof Energy The

  6. U.S. and Colombia to Collaborate on First Solar Decathlon in Latin America

    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: AlternativeEnvironment,Institutes and1TeleworkAgriculture U.S. DepartmentofDepartmentand Brazil|

  7. Belgium's Ghent University Prepares their E-Cube for Solar Decathlon...

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

    workers or help from outside financial institutions. Ghent University's home meets Passive House standards with air-tight insulation, energy-efficient windows, and the...

  8. Solar Decathlon Participants Bring Innovation to D.C.'s Ward...

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

    Washington D.C. and the D.C. Department of Housing and Community Development to build a Passive House that will require 80 percent less energy for space heating and cooling...

  9. Prediction of solar activity for the next 500 years Friedhelm Steinhilber1

    E-Print Network [OSTI]

    Wehrli, Bernhard

    Prediction of solar activity for the next 500 years Friedhelm Steinhilber1 and Jürg Beer1 Received of solar activity has been reconstructed for the past 9400 years by combining two 10 Be records from of mean solar magnetic activity averaged over 22 years for the next 500 years mainly based on the spectral

  10. Organic solar cells: An overview focusing on active layer morphology Travis L. Benanti & D. Venkataraman*

    E-Print Network [OSTI]

    Venkataraman, Dhandapani "DV"

    Review Organic solar cells: An overview focusing on active layer morphology Travis L. Benanti & D/acceptor blend, morphology, photovoltaic devices, plastic solar cells, thin films Abstract Solar cells heterojunction concept. This review provides an overview of organic solar cells. Topics covered include: a brief

  11. SOLAR ROTATION RATE DURING THE CYCLE 24 MINIMUM IN ACTIVITY

    SciTech Connect (OSTI)

    Antia, H. M. [Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005 (India); Basu, Sarbani, E-mail: antia@tifr.res.i, E-mail: sarbani.basu@yale.ed [Department of Astronomy, Yale University, P.O. Box 208101, New Haven CT 06520-8101 (United States)

    2010-09-01T23:59:59.000Z

    The minimum of solar cycle 24 is significantly different from most other minima in terms of its duration as well as its abnormally low levels of activity. Using available helioseismic data that cover epochs from the minimum of cycle 23 to now, we study the differences in the nature of the solar rotation between the minima of cycles 23 and 24. We find that there are significant differences between the rotation rates during the two minima. There are differences in the zonal-flow pattern too. We find that the band of fast rotating region close to the equator bifurcated around 2005 and recombined by 2008. This behavior is different from that during the cycle 23 minimum. By autocorrelating the zonal-flow pattern with a time shift, we find that in terms of solar dynamics, solar cycle 23 lasted for a period of 11.7 years, consistent with the result of Howe et al. (2009). The autocorrelation coefficient also confirms that the zonal-flow pattern penetrates through the convection zone.

  12. The Science of Solar As part of its public outreach activities, the UC Davis-UC Santa Cruz Solar Collaborative wishes to provide up-to-date,

    E-Print Network [OSTI]

    The Science of Solar As part of its public outreach activities, the UC Davis-UC Santa Cruz Solar Collaborative wishes to provide up-to-date, detailed information on the science behind photovoltaics. The Solar to their respective section, thereby helping to create a hub for reliable information on solar technology. · Solar

  13. Magnetic Energy Spectra in Solar Active Regions Valentyna Abramenko and Vasyl Yurchyshyn

    E-Print Network [OSTI]

    Magnetic Energy Spectra in Solar Active Regions Valentyna Abramenko and Vasyl Yurchyshyn Big Bear productivity of solar active regions (ARs) and the power-law index, , of magnetic energy spectrum, E(k) k Solar Observatory, 40386 N. Shore Lane, Big Bear City, CA 92314 ABSTRACT Line-of-sight magnetograms

  14. Sign singularity and flares in solar active region NOAA 11158

    E-Print Network [OSTI]

    Sorriso-Valvo, Luca; Kazachenko, Maria D; Krucker, Sam; Primavera, Leonardo; Servidio, Sergio; Vecchio, Antonio; Welsch, Brian T; Fisher, George H; Lepreti, Fabio; Carbone, Vincenzo

    2015-01-01T23:59:59.000Z

    Solar Active Region NOAA 11158 has hosted a number of strong flares, including one X2.2 event. The complexity of current density and current helicity are studied through cancellation analysis of their sign-singular measure, which features power-law scaling. Spectral analysis is also performed, revealing the presence of two separate scaling ranges with different spectral index. The time evolution of parameters is discussed. Sudden changes of the cancellation exponents at the time of large flares, and the presence of correlation with EUV and X-ray flux, suggest that eruption of large flares can be linked to the small scale properties of the current structures.

  15. Interpreting Helioseismic Structure Inversion Results of Solar Active Regions

    E-Print Network [OSTI]

    Chia-Hsien Lin; Sarbani Basu; Linghuai Li

    2008-09-08T23:59:59.000Z

    Helioseismic techniques such as ring-diagram analysis have often been used to determine the subsurface structural differences between solar active and quiet regions. Results obtained by inverting the frequency differences between the regions are usually interpreted as the sound-speed differences between them. These in turn are used as a measure of temperature and magnetic-field strength differences between the two regions. In this paper we first show that the "sound-speed" difference obtained from inversions is actually a combination of sound-speed difference and a magnetic component. Hence, the inversion result is not directly related to the thermal structure. Next, using solar models that include magnetic fields, we develop a formulation to use the inversion results to infer the differences in the magnetic and thermal structures between active and quiet regions. We then apply our technique to existing structure inversion results for different pairs of active and quiet regions. We find that the effect of magnetic fields is strongest in a shallow region above 0.985R_sun and that the strengths of magnetic-field effects at the surface and in the deeper (r < 0.98R_sun) layers are inversely related, i.e., the stronger the surface magnetic field the smaller the magnetic effects in the deeper layers, and vice versa. We also find that the magnetic effects in the deeper layers are the strongest in the quiet regions, consistent with the fact that these are basically regions with weakest magnetic fields at the surface. Because the quiet regions were selected to precede or follow their companion active regions, the results could have implications about the evolution of magnetic fields under active regions.

  16. THE TEMPERATURE DEPENDENCE OF SOLAR ACTIVE REGION OUTFLOWS

    SciTech Connect (OSTI)

    Warren, Harry P.; Ugarte-Urra, Ignacio; Young, Peter R.; Stenborg, Guillermo [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States)

    2011-01-20T23:59:59.000Z

    Spectroscopic observations with the EUV Imaging Spectrometer (EIS) on Hinode have revealed large areas of high-speed outflows at the periphery of many solar active regions. These outflows are of interest because they may connect to the heliosphere and contribute to the solar wind. In this paper, we use slit rasters from EIS in combination with narrowband slot imaging to study the temperature dependence and morphology of an outflow region and show that it is more complicated than previously thought. Outflows are observed primarily in emission lines from Fe XI to Fe XV. Observations at lower temperatures (Si VII), in contrast, show bright fan-like structures that are dominated by inflows. These data also indicate that the morphology of the outflows and the fans is different, outflows are observed in regions where there is no emission in Si VII. This suggests that the fans, which are often associated with outflows in studies involving imaging data, are not directly related to the active region outflows.

  17. Demo: Organic Solar Cell-equipped Energy Harvesting Active Networked Tag (EnHANT) Prototypes

    E-Print Network [OSTI]

    Carloni, Luca

    Demo: Organic Solar Cell-equipped Energy Harvesting Active Networked Tag (EnHANT) Prototypes Gerald harvesting and communications hardware, namely organic solar cells and ultra-wide-band impulse radio (UWB their communications and networking parameters to the available environmental energy harvested by the organic solar

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

    E-Print Network [OSTI]

    Anastasiadis, Anastasios

    to connect the energy re- lease process with the acceleration of electrons in solar flares, using a CA modelParticle 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

  19. Solar Energy Education. Social studies: activities and teacher's guide. Field test edition

    SciTech Connect (OSTI)

    Not Available

    1982-01-01T23:59:59.000Z

    Solar energy information is made available to students through classroom instruction by way of the Solar Energy Education teaching manuals. In this manual solar energy, as well as other energy sources like wind power, is introduced by performing school activities in the area of social studies. A glossary of energy related terms is included. (BCS)

  20. Energetic outer radiation-belt electron precipitation during recurrent solar activity

    E-Print Network [OSTI]

    Otago, University of

    on the atmosphere [Seppälä et al., 2004]. During some intense solar storms solar protons in the energy range 1Energetic outer radiation-belt electron precipitation during recurrent solar activity Mark A and Physical Sciences, University of Newcastle, Callaghan, Australia. Russell S. Grew School of Mathematical

  1. UHF Solar Powered Active Oscillator Antenna on Low Cost Flexible Substrate for Wireless Identification Applications

    E-Print Network [OSTI]

    Tentzeris, Manos

    UHF Solar Powered Active Oscillator Antenna on Low Cost Flexible Substrate for Wireless nature of the circuit and providing operational autonomy by harvesting solar power without affecting, solar power harvesting. I. INTRODUCTION The increasing use of RFIDs and wireless sensor networks

  2. Embedding metal electrodes in thick active layers for ITO-free plasmonic organic solar cells

    E-Print Network [OSTI]

    Park, Namkyoo

    Embedding metal electrodes in thick active layers for ITO-free plasmonic organic solar cells%) in optical absorption over both a conventional ITO organic solar cell and a conventional plasmonic organic solar cell with top-loaded metallic grating is predicted in the proposed structure. Optimal positioning

  3. Subsurface and Atmospheric Influences on Solar Activity ASP Conference Series, Vol. 383, c 2008

    E-Print Network [OSTI]

    Lin, Yong

    hemisphere with the Swedish 1-m Solar Telescope on 26 August 2003. The upper panel shows the filament spineSubsurface and Atmospheric Influences on Solar Activity ASP Conference Series, Vol. 383, c 2008 R and their Interrelation Y. Lin,1 S. F. Martin,2 and O. Engvold1 Abstract. The main structural components of solar

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

    E-Print Network [OSTI]

    Bergen, Universitetet i

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

  5. Solar Deployment System (SolarDS) Model: Documentation and Sample Results

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

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

  6. Energy Blog | Department of Energy

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

    Decathlon How is this 2011 Solar Decathlon unique? Try covering a roof entirely in thin film solar cells. April 15, 2011 This Month's Feature on .EDUconnections: University of...

  7. University of Maryland Wins Architecture Prize, Pulls Into Lead...

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

    Maryland Wins Architecture Prize, Pulls Into Lead in 2011 Solar Decathlon University of Maryland Wins Architecture Prize, Pulls Into Lead in 2011 Solar Decathlon September 28, 2011...

  8. SIMULATION OF THE FORMATION OF A SOLAR ACTIVE REGION

    SciTech Connect (OSTI)

    Cheung, M. C. M.; Title, A. M. [Lockheed Martin Solar and Astrophysics Laboratory, Palo Alto, CA 94304 (United States); Rempel, M. [High Altitude Observatory, NCAR, P.O. Box 3000, Boulder, CO 80307 (United States); Schuessler, M. [Max Planck Institute for Solar System Research, Katlenburg-Lindau, 37191 (Germany)

    2010-09-01T23:59:59.000Z

    We present a radiative magnetohydrodynamics simulation of the formation of an active region (AR) on the solar surface. The simulation models the rise of a buoyant magnetic flux bundle from a depth of 7.5 Mm in the convection zone up into the solar photosphere. The rise of the magnetic plasma in the convection zone is accompanied by predominantly horizontal expansion. Such an expansion leads to a scaling relation between the plasma density and the magnetic field strength such that B {proportional_to} rhov{sup 1/2}. The emergence of magnetic flux into the photosphere appears as a complex magnetic pattern, which results from the interaction of the rising magnetic field with the turbulent convective flows. Small-scale magnetic elements at the surface first appear, followed by their gradual coalescence into larger magnetic concentrations, which eventually results in the formation of a pair of opposite polarity spots. Although the mean flow pattern in the vicinity of the developing spots is directed radially outward, correlations between the magnetic field and velocity field fluctuations allow the spots to accumulate flux. Such correlations result from the Lorentz-force-driven, counterstreaming motion of opposite polarity fragments. The formation of the simulated AR is accompanied by transient light bridges between umbrae and umbral dots. Together with recent sunspot modeling, this work highlights the common magnetoconvective origin of umbral dots, light bridges, and penumbral filaments.

  9. Experimental Research of an Active Solar Heating System

    E-Print Network [OSTI]

    Gao, X.; Li, D.

    2006-01-01T23:59:59.000Z

    system are discussed in this paper. Based on the design, construction, testing and economic analysis of a demonstration project with the solar heating system, this paper discusses how to connect the solar energy collector with the electricity heater...

  10. Solar activity can be surprisingly good for Last month, the sun went haywire. Almost every day for two weeks in early September, solar flares

    E-Print Network [OSTI]

    California at Santa Cruz, University of

    Solar activity can be surprisingly good for astronauts Last month, the sun went haywire. Almost every day for two weeks in early September, solar flares issued from a giant sunspot named "active region 798/808." X-rays ionized Earth's upper atmosphere. Solar protons peppered the Moon

  11. Solar Energy Education. Humanities: activities and teacher's guide. Field test edition

    SciTech Connect (OSTI)

    Not Available

    1982-01-01T23:59:59.000Z

    Activities are outlined to introduce students to information on solar energy while performing ordinary classroom work. In this teaching manual solar energy is integrated with the humanities. The activities include such things as stories, newspapers, writing assignments, and art and musical presentations all filled with energy related terms. An energy glossary is provided. (BCS)

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

    E-Print Network [OSTI]

    Zerbo, J. L.

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

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

    E-Print Network [OSTI]

    Holappa, Lauri; Asikainen, Timo

    2015-01-01T23:59:59.000Z

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

  14. THE EXPANSION OF ACTIVE REGIONS INTO THE EXTENDED SOLAR CORONA

    SciTech Connect (OSTI)

    Morgan, Huw; Jeska, Lauren; Leonard, Drew, E-mail: hmorgan@aber.ac.uk [Sefydliad Mathemateg a Ffiseg, Prifysgol Aberystwyth, Ceredigion SY23 3BZ (United Kingdom)

    2013-06-01T23:59:59.000Z

    Advanced image processing of Large Angle and Spectrometric Coronagraph Experiment (LASCO) C2 observations reveals the expansion of the active region closed field into the extended corona. The nested closed-loop systems are large, with an apparent latitudinal extent of 50 Degree-Sign , and expanding to heights of at least 12 R{sub Sun }. The expansion speeds are {approx}10 km s{sup -1} in the AIA/SDO field of view, below {approx}20 km s{sup -1} at 2.3 R{sub Sun }, and accelerate linearly to {approx}60 km s{sup -1} at 5 R{sub Sun }. They appear with a frequency of one every {approx}3 hr over a time period of around three days. They are not coronal mass ejections (CMEs) since their gradual expansion is continuous and steady. They are also faint, with an upper limit of 3% of the brightness of background streamers. Extreme ultraviolet images reveal continuous birth and expansion of hot, bright loops from a new active region at the base of the system. The LASCO images show that the loops span a radial fan-like system of streamers, suggesting that they are not propagating within the main coronal streamer structure. The expanding loops brighten at low heights a few hours prior to a CME eruption, and the expansion process is temporarily halted as the closed field system is swept away. Closed magnetic structures from some active regions are not isolated from the extended corona and solar wind, but can expand to large heights in the form of quiescent expanding loops.

  15. The role of filament activation in a solar eruption

    E-Print Network [OSTI]

    da Costa, Fatima Rubio; Fletcher, Lyndsay; Romano, Paolo; Labrosse, Nicolas

    2014-01-01T23:59:59.000Z

    Observations show that the mutual relationship between filament eruptions and solar flares cannot be described in terms of an unique scenario. In some cases, the eruption of a filament appears to trigger a flare, while in others the observations are more consistent with magnetic reconnection that produces both the flare observational signatures (e.g., ribbons, plasma jets, post-flare loops, etc.) and later the destabilization and eruption of a filament. We study an event which occurred in NOAA 8471, where a flare and the activation of (at least) two filaments were observed on 28 February 1999. By using imaging data acquired in the 1216, 1600, 171 and 195 \\AA\\ TRACE channels and by BBSO in the continnum and in H$\\alpha$, a morphological study of the event is carried out. Using TRACE 1216 and 1600 \\AA\\ data, an estimate of the "pure" Ly$\\alpha$ power is obtained. The extrapolation of the magnetic field lines is done using the SOHO/MDI magnetograms and assuming a potential field. The potential magnetic field ext...

  16. UNCORRECTEDPROOF 2 A method to evaluate the level of solar activity at

    E-Print Network [OSTI]

    UNCORRECTEDPROOF 2 A method to evaluate the level of solar activity at 3 the remainder of a progressing solar cycle 4 K.J. Li a,b,*, J. Qiu b , F.Y. Xiang c , P.X. Gao a , T.W. Su a 5 a Solar Physics Division, National Astronomical Observatories/Yunnan Observatory, CAS, Kunming 650011, China 6 b Big Bear

  17. Recent National Solar Thermal Test Facility activities, in partnership with industry

    SciTech Connect (OSTI)

    Ghanbari, C.; Cameron, C.P.; Ralph, M.E.; Pacheco, J.E.; Rawlinson, K.S. [Sandia National Labs., Albuquerque, NM (United States); Evans, L.R. [Ewing Technical Design, Albuquerque, NM (United States)

    1994-10-01T23:59:59.000Z

    The National Solar Thermal Test Facility (NSTTF) at Sandia National Laboratories in Albuquerque, New Mexico, USA conducts testing of solar thermal components and systems, funded primarily by the US Department of Energy. Activities are conducted in support of Central Receiver Technology, Distributed Receiver Technology and Design Assistance projects. All activities are performed in support of various cost-shared government/industry joint ventures and, on a design assistance basis, in support of a number of other industry partners.

  18. The Solar Thermal Design Assistance Center report of its activities and accomplishments in Fiscal Year 1993

    SciTech Connect (OSTI)

    Menicucci, D.F.

    1994-03-01T23:59:59.000Z

    The Solar Thermal Design Assistance Center (STDAC) at Sandia National Laboratories is a resource provided by the US Department of Energy`s Solar Thermal Program. Its major objectives are to accelerate the use of solar thermal systems through (a) direct technical assistance to users, (b) cooperative test, evaluation, and development efforts with private industry, and (c) educational outreach activities. This report outlines the major activities and accomplishments of the STDAC in Fiscal Year 1993. The report also contains a comprehensive list of persons who contacted the STDAC by telephone for information or technical consulting.

  19. Long-period fading in atmospherics during severe meteorological activity and associated solar geophysical phenomena at low latitudes

    E-Print Network [OSTI]

    Boyer, Edmond

    Long-period fading in atmospherics during severe meteorological activity and associated solar activity with the solar geophysical phenomena was studied. The results are indicative of an interesting sequence of solar- terrestrial events. A tentative conclusion is reached, suggesting an origin

  20. North-south asymmetry in solar activity: predicting the amplitude of the next solar cycle

    E-Print Network [OSTI]

    J. Javaraiah

    2007-01-31T23:59:59.000Z

    Using Greenwich and SOON sunspot group data during the period 1874 -- 2005, we find that the sums of the areas of the sunspot groups in $0^\\circ$ -- $10^\\circ$ latitude-interval of the Sun's northern hemisphere and in the time-interval, minus 1.35 year to plus 2.15 year from the time of the preceding minimum--and in the same latitude interval of the southern hemisphere but plus 1.0 year to plus 1.75 year from the time of the maximum--of a sunspot cycle are well correlating with the amplitude (maximum of the smoothed monthly sunspot number) of its immediate following cycle. Using this relationship it is possible to predict the amplitude of a sunspot cycle by about 9 -- 13 years in advance. We predicted $74 \\pm 10$ for the amplitude of the upcoming cycle~24. Variations in solar meridional flows during solar cycles and 9 -- 16 year variations in solar equatorial rotation may be responsible for the aforementioned relationship.

  1. Some notes concerning the prediction of the amplitude of the two solar activity cycles

    E-Print Network [OSTI]

    A. G. Tlatov

    2007-06-12T23:59:59.000Z

    The parameter G, which is determined from the general number of sunspots groups Ng according to the daily observations G=Sum(1/Ng)^2, is offered. This parameter is calculated for the days when there is at least one sunspots group. It characterizes the minimum epoch solar activity. Parameter G mounts to the maximum during the epoch close to the minimal activity of sunspots. According too the data of the sequence of sunspots group in Greenwich-USAF/NOAA observatory format, observation data of Kislovodsk solar station and also daily Wolf number the changes of parameter G during 100 years were reconstructed. It is demonstrated in the paper that parameter G's amplitude in minimal solar activity n is linked with the sunspot cycle's amplitude Wn+1. The 24th activity cycle prediction is calculated, which makes W24=135(+/-12).

  2. The Sun-like activity of the solar twin 18 Scorpii

    E-Print Network [OSTI]

    Jeffrey C. Hall; Gregory W. Henry; G. Wesley Lockwood

    2007-03-16T23:59:59.000Z

    We present the results of 10 yr of complementary spectroscopic and photometric observations of the solar twin 18 Scorpii. We show that over the course of its ~7 year chromospheric activity cycle, 18 Sco's brightness varies in the same manner as the Sun's and with a likely brightness variation of 0.09%, similar to the 0.1% decadal variation in the total solar irradiance.

  3. 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.

  4. 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

  5. Heat Pipe Solar Receiver Development Activities at Sandia National Laboratories

    SciTech Connect (OSTI)

    Adkins, D.R.; Andraka, C.E.; Moreno, J.B.; Moss, T.A.; Rawlinson, K.S.; Showalter, S.K.

    1999-01-08T23:59:59.000Z

    Over the past decade, Sandia National Laboratories has been involved in the development of receivers to transfer energy from the focus of a parabolic dish concentrator to the heater tubes of a Stirling engine. Through the isothermal evaporation and condensation of sodium. a heat-pipe receiver can efficiently transfer energy to an engine's working fluid and compensate for irregularities in the flux distribution that is delivered by the concentrator. The operation of the heat pipe is completely passive because the liquid sodium is distributed over the solar-heated surface by capillary pumping provided by a wick structure. Tests have shown that using a heat pipe can boost the system performance by twenty percent when compared to directly illuminating the engine heater tubes. Designing heat pipe solar receivers has presented several challenges. The relatively large area ({approximately}0.2 m{sup 2}) of the receiver surface makes it difficult to design a wick that can continuously provide liquid sodium to all regions of the heated surface. Selecting a wick structure with smaller pores will improve capillary pumping capabilities of the wick, but the small pores will restrict the flow of liquid and generate high pressure drops. Selecting a wick that is comprised of very tine filaments can increase the permeability of the wick and thereby reduce flow losses, however, the fine wick structure is more susceptible to corrosion and mechanical damage. This paper provides a comprehensive review of the issues encountered in the design of heat pipe solar receivers and solutions to problems that have arisen. Topics include: flow characterization in the receiver, the design of wick systems. the minimization of corrosion and dissolution of metals in sodium systems. and the prevention of mechanical failure in high porosity wick structures.

  6. Solar Flare Activity Closely Monitored | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' Research |RegulationRenewable Energy (EERE)SmartRemarkson solar energyDr. Ken

  7. Solar activity around AD 775 from aurorae and radiocarbon

    E-Print Network [OSTI]

    Neuhaeuser, Ralph

    2015-01-01T23:59:59.000Z

    A large variation in 14 C around AD 775 has been considered to be caused by one or more solar super-flares within one year. We critically review all known aurora reports from Europe as well as the Near, Middle, and Far East from AD 731 to 825 and find 39 likely true aurorae plus four more potential aurorae and 24 other reports about halos, meteors, thunderstorms etc., which were previously misinterpreted as aurorae or misdated; we assign probabilities for all events according to five aurora criteria. We find very likely true aurorae in AD 743, 745, 762, 765, 772, 773, 793, 796, 807, and 817. There were two aurorae in the early 770s observed near Amida (now Diyarbakir in Turkey near the Turkish-Syrian border), which were not only red, but also green-yellow - being at a relatively low geo-magnetic latidude, they indicate a relatively strong solar storm. However, it cannot be argued that those aurorae (geo-magnetical latitude 43 to 50 deg, considering five different reconstructions of the geo-magnetic pole) coul...

  8. Stellar activity as noise in exoplanet detection I. Methods and application to solar-like stars and activity cycles

    E-Print Network [OSTI]

    Korhonen, H; Piskunov, N; Hackman, T; Juncher, D; Jarvinen, S P; Joergensen, U G

    2015-01-01T23:59:59.000Z

    The detection of exoplanets using any method is prone to confusion due to the intrinsic variability of the host star. We investigate the effect of cool starspots on the detectability of the exoplanets around solar-like stars using the radial velocity method. For investigating this activity-caused "jitter" we calculate synthetic spectra using radiative transfer, known stellar atomic and molecular lines, different surface spot configurations, and an added planetary signal. Here, the methods are described in detail, tested and compared to previously published studies. The methods are also applied to investigate the activity jitter in old and young solar-like stars, and over a solar-like activity cycles. We find that the mean full jitter amplitude obtained from the spot surfaces mimicking the solar activity varies during the cycle approximately between 1 m/s and 9 m/s. With a realistic observing frequency a Neptune mass planet on a one year orbit can be reliably recovered. On the other hand, the recovery of an Ea...

  9. Material and Chemical Processing (Concentrated Solar) (4 Activities...

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

    chemical reactions, and to treat materials for increased hardness and resistance to corrosion. The activities are: Can sunlight break down different kinds of plastics? Can...

  10. 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.

  11. Level and length of cyclic solar activity during the Maunder minimum as deduced from the active day statistics

    E-Print Network [OSTI]

    Vaquero, J M; Usoskin, I G; Carrasco, V M S; Gallego, M C

    2015-01-01T23:59:59.000Z

    The Maunder minimum (MM) of greatly reduced solar activity took place in 1645-1715, but the exact level of sunspot activity is uncertain as based, to a large extent, on historical generic statements of the absence of spots on the Sun. Here we aim, using a conservative approach, to assess the level and length of solar cycle during the Maunder minimum, on the basis of direct historical records by astronomers of that time. A database of the active and inactive days (days with and without recorded sunspots on the solar disc respectively) is constructed for three models of different levels of conservatism (loose ML, optimum MO and strict MS models) regarding generic no-spot records. We have used the active day fraction to estimate the group sunspot number during the MM. A clear cyclic variability is found throughout the MM with peaks at around 1655--1657, 1675, 1684 and 1705, and possibly 1666, with the active day fraction not exceeding 0.2, 0.3 or 0.4 during the core MM, for the three models. Estimated sunspot nu...

  12. On the relationship between cosmic rays, solar activity and powerful earthquakes

    E-Print Network [OSTI]

    Mikhail Kovalyov; Selena Kovalyov

    2015-02-10T23:59:59.000Z

    In this paper we analyze the correlation of cosmic rays intensity to increases in seismic activity. We also show that high-magnitude earthquakes appear in group. As a prequel, we discuss in \\S1 naive visualization of the solar-cosmic ray interplay.

  13. Global analysis of active longitudes of solar X-ray flares L. Zhang a,b,c

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    Observatories, Chinese Academy of Sciences, Beijing, China c Key Laboratory of Solar Activity, Chinese AcademyGlobal analysis of active longitudes of solar X-ray flares L. Zhang a,b,c , K. Mursula a,Ã, I of Sciences, Beijing, China d University of Oulu, Sodankyl¨a Geophysical Observatory, Oulu, Finland a r t i c

  14. Solar Contractor Licensing

    Broader source: Energy.gov [DOE]

    The California Contractors State License Board administers contractor licenses. The C-46 Solar Contractor license covers active solar water and space heating systems, solar pool heating systems,...

  15. 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.

  16. Evolution of Magnetic Helicity and Energy Spectra of Solar Active Regions

    E-Print Network [OSTI]

    Zhang, Hongqi; Sokoloff, D D

    2015-01-01T23:59:59.000Z

    We adopt an isotropic representation of the Fourier-transformed two-point correlation tensor of the magnetic field for estimating magnetic energy and helicity spectra as well as current helicity spectra of individual active regions and the change of their spectral indices with the solar cycle. The departure of the spectral index of current helicity from 5/3 is analyzed, and it is found that it is lower than that of magnetic energy. There is no obvious relationship between the change of the normalized magnetic helicity and the integral scale of the magnetic field for individual active regions. The evolution of the spectral index reflects the development and distribution of various scales of magnetic structures in active regions. It is found that around solar maximum the magnetic energy and helicity spectra are steeper.

  17. EVIDENCE FOR THE IMPACT OF STELLAR ACTIVITY ON THE DETECTABILITY OF SOLAR-LIKE OSCILLATIONS OBSERVED BY KEPLER

    SciTech Connect (OSTI)

    Chaplin, W. J.; Broomhall, A.-M.; Hekker, S.; Elsworth, Y.; Stevens, I. R. [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT (United Kingdom); Bedding, T. R.; Huber, D. [Sydney Institute for Astronomy (SIfA), School of Physics, University of Sydney, NSW 2006 (Australia); Bonanno, A. [INAF Osservatorio Astrofisico di Catania, Via S. Sofia 78, 95123, Catania (Italy); GarcIa, R. A. [Laboratoire AIM, CEA/DSM, CNRS, Universite Paris Diderot, IRFU/SAp, 91191 Gif-sur-Yvette Cedex (France); Verner, G. A. [Astronomy Unit, Queen Mary, University of London, Mile End Road, London, E1 4NS (United Kingdom); Basu, S. [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Houdek, G. [Institute of Astronomy, University of Vienna, A-1180 Vienna (Austria); Mathur, S.; Metcalfe, T. S. [High Altitude Observatory and, Scientific Computing Division, National Center for Atmospheric Research, Boulder, Colorado 80307 (United States); Mosser, B. [LESIA, CNRS, Universite Pierre et Marie Curie, Universite Denis Diderot, Observatoire de Paris, 92195 Meudon Cedex (France); New, R. [Materials Engineering Research Institute, Faculty of Arts, Computing, Engineering and Sciences, Sheffield Hallam University, Sheffield, S1 1WB (United Kingdom); Appourchaux, T. [Institut d'Astrophysique Spatiale, Universite Paris XI, CNRS (UMR8617), Batiment 121, 91405 Orsay Cedex (France); Karoff, C. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Molenda-Zakowicz, J. [Astronomical Institute, University of Wroclaw, ul. Kopernika, 11, 51-622 Wroclaw (Poland); Monteiro, M. J. P. F. G. [Centro de Astrofisica and Faculdade de Ciencias, Universidade do Porto, Rua das Estrelas, 4150-762 (Portugal)

    2011-05-01T23:59:59.000Z

    We use photometric observations of solar-type stars, made by the NASA Kepler Mission, to conduct a statistical study of the impact of stellar surface activity on the detectability of solar-like oscillations. We find that the number of stars with detected oscillations falls significantly with increasing levels of activity. The results present strong evidence for the impact of magnetic activity on the properties of near-surface convection in the stars, which appears to inhibit the amplitudes of the stochastically excited, intrinsically damped solar-like oscillations.

  18. Temporal and energy behavior of cosmic ray fluxes in the periods of low solar activity

    E-Print Network [OSTI]

    Bazilevskaya, G A; Krainev, M B; Makhmutov, V S; Svirzhevskaya, A K; Svirzhevsky, N S

    2014-01-01T23:59:59.000Z

    Modulation of galactic cosmic ray intensity is governed by several mechanisms including diffusion, convection, adiabatic energy losses and drift. Relative roles of these factors change in the course of an 11-year solar cycle. That can result in the changes in the energy dependence of the 11-year cosmic ray modulation. The minimum between the solar cycles 23 and 24 was extremely deep and long-lasting which led to the record high cosmic ray fluxes low-energy particles dominating. This was a signature of unusually soft energy spectrum of the cosmic rays. In this work we examine the energy dependence of the 11-year modulation during the last three solar cycles and argue that a soft energy spectrum was observed in the minimum of each cycle however only for particles below of energy around 10 GeV. From mid 1980s the energy dependence of cosmic rays became softer from minimum to minimum of solar activity. The work is based on the cosmic ray data of the spacecraft, balloon-borne and the ground-based observations.

  19. Ring diagram analysis of the characteristics of solar oscillation modes in active regions

    E-Print Network [OSTI]

    S. P. Rajaguru; Sarbani Basu; H. M. Antia

    2001-08-14T23:59:59.000Z

    The presence of intense magnetic fields in and around sunspots is expected to modify the solar structure and oscillation frequencies. Applying the ring diagram technique to data from the Michelson Doppler Imager (MDI) on board the Solar and Heliospheric Observatory (SOHO), we analyze the characteristics of high-degree f and p modes near active regions and compare them with the characteristics of the modes in quiet regions. As expected from earlier results, the f- and p-mode frequencies of high degree modes are found to be significantly larger in magnetically active regions. In addition, we find that the power in both f and p modes is lower in active regions, while the widths of the peaks are larger, indicating smaller lifetimes. We also find that the oscillation modes are more asymmetric in active regions than those in quiet regions, indicating that modes in active regions are excited closer to the surface. While the increase in mode frequency is monotonic in frequency, all other characteristics show more complex frequency dependences.

  20. Lithium abundance/surface activity connections in solar-type Pleiads

    E-Print Network [OSTI]

    D. Clarke; E. C. MacDonald; S. Owens

    2003-12-03T23:59:59.000Z

    The relation between the lithium abundance, A_Li, and photospheric activity of solar-type Pleiads is investigated for the first time via acquisition and analysis of B and V-band data. Predictions of activity levels of target stars were made according to the A_Li/(B-V) relation and then compared with new CCD photometric measurements. Six sources behaved according to the predictions while one star (HII 676), with low predicted activity, exhibited the largest variability of the study; another star (HII 3197), with high predicted activity, was surprisingly quiet. Two stars displayed non-periodic fadings, this being symptomatic of orbiting disk-like structures with irregular density distributions. Although the observation windows were not ideal for rotational period detection, some periodograms provided possible values; the light-curve obtained for HII 1532 is consistent with that previously recorded.

  1. 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.

  2. Active barrier films of PET for solar cell application: Processing and characterization

    SciTech Connect (OSTI)

    Rossi, Gabriella; Scarfato, Paola; Incarnato, Loredana [Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132 - 84084 Fisciano (Italy)

    2014-05-15T23:59:59.000Z

    A preliminary investigation was carried out on the possibility to improve the protective action offered by the standard multilayer structures used to encapsulate photovoltaic devices. With this aim, a commercial active barrier PET-based material, able to absorb oxygen when activated by liquid water, was used to produce flexible and transparent active barrier films, by means of a lab-scale film production plant. The obtained film, tested in terms of thermal, optical and oxygen absorption properties, shows a slow oxygen absorption kinetics, an acceptable transparency and an easy roll-to-roll processability, so proving itself as a good candidate for the development of protective coating for solar cells against the atmospheric degradation agents like the rain.

  3. Multi-scale comparative spectral analysis of satellite total solar irradiance measurements from 2003 to 2013 reveals a planetary modulation of solar activity and its non-linear dependence on the 11-year solar cycle

    E-Print Network [OSTI]

    Nicola Scafetta; Richard C. Willson

    2013-11-26T23:59:59.000Z

    Herein we adopt a multi-scale dynamical spectral analysis technique to compare and study the dynamical evolution of the harmonic components of the overlapping ACRIMSAT/ACRIM3, SOHO/VIRGO and SORCE/TIM total solar irradiance (TSI) records during 2003.15 to 2013.16 in solar cycles 23 and 24. The three TSI time series present highly correlated patterns. Significant power spectral peaks are common to these records and are observed at the following periods: 0.070 year, 0.097 year, 0.20 year, 0.25 year, 0.30-0.34 year, 0.39 year. Less certain spectral peaks occur at about 0.55 year, 0.60-0.65 year and 0.7-0.9 year. Four main frequency periods at 24.8 days (0.068 year), 27.3 days (0.075 year), at 34-35 days (0.093-0.096 year) and 36-38 days (0.099-0.104 year) characterize the solar rotation cycle. The amplitude of these oscillations, in particular of those with periods larger than 0.5 year, appears to be modulated by the 11-year solar cycle. Similar harmonics have been found in other solar indices. The observed periodicities are found highly coherent with the spring, orbital and synodic periods of Mercury, Venus, Earth and Jupiter. We conclude that solar activity is likely modulated by planetary gravitational and electromagnetic forces acting on the sun. The strength of the sun's response to planetary forcing depends non-linearly on the state of internal solar dynamics: planetary-sun coupling effects are enhanced during solar activity maxima and attenuated during minima.

  4. A SYSTEMATIC SURVEY OF HIGH-TEMPERATURE EMISSION IN SOLAR ACTIVE REGIONS

    SciTech Connect (OSTI)

    Warren, Harry P. [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States); Winebarger, Amy R. [NASA Marshall Space Flight Center, VP 62, Huntsville, AL 35812 (United States); Brooks, David H. [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States)

    2012-11-10T23:59:59.000Z

    The recent analysis of observations taken with the EUV Imaging Spectrometer and X-Ray Telescope instruments on Hinode suggests that well-constrained measurements of the temperature distribution in solar active regions can finally be made. Such measurements are critical for constraining theories of coronal heating. Past analysis, however, has suffered from limited sample sizes and large uncertainties at temperatures between 5 and 10 MK. Here we present a systematic study of the differential emission measure distribution in 15 active region cores. We focus on measurements in the 'inter-moss' region, that is, the region between the loop footpoints, where the observations are easier to interpret. To reduce the uncertainties at the highest temperatures we present a new method for isolating the Fe XVIII emission in the AIA/SDO 94 A channel. The resulting differential emission measure distributions confirm our previous analysis showing that the temperature distribution in an active region core is often strongly peaked near 4 MK. We characterize the properties of the emission distribution as a function of the total unsigned magnetic flux. We find that the amount of high-temperature emission in the active region core is correlated with the total unsigned magnetic flux, while the emission at lower temperatures, in contrast, is inversely related. These results provide compelling evidence that high-temperature active region emission is often close to equilibrium, although weaker active regions may be dominated by evolving million degree loops in the core.

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

    E-Print Network [OSTI]

    A. Bershadskii

    2009-12-25T23:59:59.000Z

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

  6. A 927 MHz Solar Powered Active Antenna Oscillator Beacon Signal Generator

    E-Print Network [OSTI]

    Tentzeris, Manos

    . Properly placed solar cells and a regulator are used to bias the device by scavenging solar energy from technology, which scavenges through solar energy the power necessary for operation. Starting from a folded the radiation performances. After that, solar cells were properly inserted for energy scavenging purposes

  7. 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.

  8. Energy Blog | Department of Energy

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

    team's Flickr photostream Solar Decathlon Design Places People and the Outdoors at its Heart The Solar Decathlon team from New Zealand is the first from the Southern Hemisphere to...

  9. Energy Department Opens Competition to Select Student Teams for...

    Office of Environmental Management (EM)

    Opens Competition to Select Student Teams for Solar Decathlon 2015 Energy Department Opens Competition to Select Student Teams for Solar Decathlon 2015 November 1, 2013 - 3:17pm...

  10. Seismic sensitivity to sub-surface solar activity from 18 years of GOLF/SoHO observations

    E-Print Network [OSTI]

    Salabert, D; Turck-Chieze, S

    2015-01-01T23:59:59.000Z

    Solar activity has significantly changed over the last two Schwabe cycles. After a long and deep minimum at the end of Cycle 23, the weaker activity of Cycle 24 contrasts with the previous cycles. In this work, the response of the solar acoustic oscillations to solar activity is used in order to provide insights on the structural and magnetic changes in the sub-surface layers of the Sun during this on-going unusual period of low activity. We analyze 18 years of continuous observations of the solar acoustic oscillations collected by the Sun-as-a-star GOLF instrument onboard the SoHO spacecraft. From the fitted mode frequencies, the temporal variability of the frequency shifts of the radial, dipolar, and quadrupolar modes are studied for different frequency ranges which are sensitive to different layers in the solar sub-surface interior. The low-frequency modes show nearly unchanged frequency shifts between Cycles 23 and 24, with a time evolving signature of the quasi-biennial oscillation, which is particularly...

  11. TURBULENT PUMPING OF MAGNETIC FLUX REDUCES SOLAR CYCLE MEMORY AND THUS IMPACTS PREDICTABILITY OF THE SUN'S ACTIVITY

    SciTech Connect (OSTI)

    Karak, Bidya Binay [Department of Physics, Indian Institute of Science, Bangalore 560012 (India); Nandy, Dibyendu, E-mail: bidya_karak@physics.iisc.ernet.in, E-mail: dnandi@iiserkol.ac.in [Indian Institute for Science Education and Research, Kolkata, Mohampur 741252, West Bengal (India)

    2012-12-10T23:59:59.000Z

    Prediction of the Sun's magnetic activity is important because of its effect on space environment and climate. However, recent efforts to predict the amplitude of the solar cycle have resulted in diverging forecasts with no consensus. Yeates et al. have shown that the dynamical memory of the solar dynamo mechanism governs predictability, and this memory is different for advection- and diffusion-dominated solar convection zones. By utilizing stochastically forced, kinematic dynamo simulations, we demonstrate that the inclusion of downward turbulent pumping of magnetic flux reduces the memory of both advection- and diffusion-dominated solar dynamos to only one cycle; stronger pumping degrades this memory further. Thus, our results reconcile the diverging dynamo-model-based forecasts for the amplitude of solar cycle 24. We conclude that reliable predictions for the maximum of solar activity can be made only at the preceding minimum-allowing about five years of advance planning for space weather. For more accurate predictions, sequential data assimilation would be necessary in forecasting models to account for the Sun's short memory.

  12. Solar Activity during Two Millennia as Estimated from Annual Tree Rings

    E-Print Network [OSTI]

    Muraki, Y; Kuramata, S; Masuda, K; Nagaya, K; Shibata, S

    2013-01-01T23:59:59.000Z

    The relationship between solar activity and the global climate is not only an academically interesting issue, but also an important problem for human beings. Lean and Rind have analyzed a considerable amount of climate data from around the world from 1889 to 2006. According to their analysis, the global effect was estimated to be 0.17 plus-minus 0.01K between the solar maximum and minimum. However, they noticed that the effect strongly appeared in the zones between 70N and 30N, and between 25S and 50S. At its peak latitude (near 40), the effect was estimated to be 0.5 K. Therefore, we analyzed a tree that survived at the Murooji temple in Nara prefecture (34d32mN, 136d2mE) Japan, for 391 years. Quite surprisingly, Fourier analysis of the annual growth rate identified two cycles with periodicities of 12 and 25 years during the Maunder minimum. We have continued the analysis, using different samples from the Nagusa shrine in Hyogo Prefecture, Itayanagi City, Aomori Prefecture, Japan, and from Yaku Island in Kyu...

  13. Directory of Solar Energy Research Activities in the United States: First Edition, May 1980. [1220 projects

    SciTech Connect (OSTI)

    None

    1980-05-01T23:59:59.000Z

    Information covering 1220, FY 1978 and FY 1979 solar energy research projects is included. In addition to the title and text of project summaries, the directory contains the following indexes: subject index, investigator index, performing organization index, and supporting organization index. This information was registered with the Smithsonian Science Information Exchange by Federal, State, and other supporting organizations. The project summaries are categorized in the following areas: biomass, ocean energy, wind energy,photovoltaics, photochemical energy conversion, photobiological energy conversion, solar heating and cooling, solar process heat, solar collectors and concentrators, solar thermal electric generation, and other solar energy conversion. (WHK)

  14. E-Print Network 3.0 - active solar heating Sample Search Results

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

    the transparent cover and dark... Thermal Solar thermal technologies use the sun's power to heat air or water. We use hot water in our homes... The two types of solar thermal...

  15. Activity 3SOLAR PHYSICS AND TERRESTRIAL EFFECTS 59Space Weather Prediction Center

    E-Print Network [OSTI]

    as the solar collection material. Ethylene glycol (antifreeze) might be used, or even a photovoltaic cell could

  16. Free Magnetic Energy in Solar Active Regions above the Minimum-Energy Relaxed State

    E-Print Network [OSTI]

    S. Regnier; E. R. Priest

    2008-05-12T23:59:59.000Z

    To understand the physics of solar flares, including the local reorganisation of the magnetic field and the acceleration of energetic particles, we have first to estimate the free magnetic energy available for such phenomena, which can be converted into kinetic and thermal energy. The free magnetic energy is the excess energy of a magnetic configuration compared to the minimum-energy state, which is a linear force-free field if the magnetic helicity of the configuration is conserved. We investigate the values of the free magnetic energy estimated from either the excess energy in extrapolated fields or the magnetic virial theorem. For four different active regions, we have reconstructed the nonlinear force-free field and the linear force-free field corresponding to the minimum-energy state. The free magnetic energies are then computed. From the energy budget and the observed magnetic activity in the active region, we conclude that the free energy above the minimum-energy state gives a better estimate and more insights into the flare process than the free energy above the potential field state.

  17. Solar energy in Italy: a profile of renewable energy activity in its national context

    SciTech Connect (OSTI)

    Shea, C.A.

    1980-12-01T23:59:59.000Z

    The following are included: country overview; energy summary; Italian Republic-geopolitical, economic, and cultural aspects; the energy profile; imported energy sources; solar energy research and development; solar energy organizations; solar energy related legislation and administration policies; and international agreements, contacts, manufacturers, and projects. (MHR)

  18. Towards an understanding of light activation processes in titanium oxide based inverted organic solar cells

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    solar cells S. Chambon, E. Destouesse, B. Pavageau, L. Hirsch, and G. Wantz Citation: J. Appl. Phys. 112. Related Articles Power losses in bilayer inverted small molecule organic solar cells Appl. Phys. Lett. 101, 233903 (2012) Thin-film encapsulation of inverted indium-tin-oxide-free polymer solar cells by atomic

  19. 'Solar Activity and its Magnetic Origin' Proceedings IAU Symposium No. 233, 2006

    E-Print Network [OSTI]

    Podladchikova, Elena

    , Imperial College London, London SW7 2BW, UK email: b.lefebvre@imperial.ac.uk Abstract. Solar coronal to energy dissipation in the solar corona. Microflares, were first detected in soft X-rays in a balloon distribu- tions of solar flare energy, peak rate and several other characteristics exhibit power

  20. Energy in Mexico: a profile of solar energy activity in its national context

    SciTech Connect (OSTI)

    Hawkins, D.

    1980-04-01T23:59:59.000Z

    The geopolitical, economic, and cultural aspects of the United States of Mexico are presented. Mexico's energy profile includes the following: energy policy objectives, government energy structure, organizations for implementation, indigeneous energy sources, imported energy sources, solar energy research and development, solar energy organizations and solar energy related legislation and administrative policies. International agreements, contacts, manufacturers, and projects are listed. (MRH)

  1. Did geomagnetic activity challenge electric power reliability during solar cycle 23? Evidence from the PJM regional transmission

    E-Print Network [OSTI]

    Schrijver, Karel

    Did geomagnetic activity challenge electric power reliability during solar cycle 23? Evidence from through 30 April 2004. During this time period PJM coordinated the movement of wholesale electricity of challenged reliability is the incidence of out-of-economic-merit order dispatching due to adverse reactive

  2. Proceedings of ICRC 2001: 3791 c Copernicus Gesellschaft 2001 Odd and even cycles in cosmic rays and solar activity

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    in cosmic rays and solar activity I.G. Usoskin1,3 , K. Mursula2 , and G.A. Kovaltsov3 1 Sodankyl¨a Geophysical Observatory (Oulu unit), FIN-90014 University of Oulu, Finland 2 Department of Physical Sciences, FIN-90014 University of Oulu, Finland 3 Ioffe Physical-Technical Institute, 194021 St

  3. Petrovay: Solar physics Helioseismology SOLAR OSCILLATIONS: INTRODUCTION

    E-Print Network [OSTI]

    Petrovay, Kristóf

    : Solar oscillations first observed by both Doppler and intensity method (Leighton, Noyes & Simon 1962: ApPetrovay: Solar physics Helioseismology SOLAR OSCILLATIONS: INTRODUCTION Small departures from hydrostatic equilibrium caused by ­ turbulent convection ­ localized events related to solar activity (e

  4. MHD wave refraction and the acoustic halo effect around solar active regions - a 3D study

    E-Print Network [OSTI]

    Rijs, Carlos; Przybylski, Damien; Cally, Paul S

    2015-01-01T23:59:59.000Z

    An enhancement in high-frequency acoustic power is commonly observed in the solar photosphere and chromosphere surrounding magnetic active regions. We perform 3D linear forward wave modelling with a simple wavelet pulse acoustic source to ascertain whether the formation of the acoustic halo is caused by MHD mode conversion through regions of moderate and inclined magnetic fields. This conversion type is most efficient when high frequency waves from below intersect magnetic field lines at a large angle. We find a strong relationship between halo formation and the equipartition surface at which the Alfv\\'en speed $a$ matches the sound speed $c$, lending support to the theory that photospheric and chromospheric halo enhancement is due to the creation and subsequent reflection of magnetically dominated fast waves from essentially acoustic waves as they cross $a=c$. In simulations where we have capped $a$ such that waves are not permitted to refract after reaching the $a=c$ height, halos are non-existent, which su...

  5. Relationship between magnetic power spectrum and flare productivity in solar active regions

    E-Print Network [OSTI]

    ; Politano et al. 1989) energy spectrum of solar wind plasma is close to k-5/3 . In the MHD case, Alfven.I. Abramenko Big Bear Solar Observatory, 40386 N. Shore Lane, Big Bear City, CA 92314, USA ABSTRACT Power turbulent regime with constant rate of energy transfer along the spectrum is holding. Due to an equilibrium

  6. Indian Solar Cities Programme: An Overview of Major Activities and Accomplishments; Preprint

    SciTech Connect (OSTI)

    Kandt, A.

    2012-05-01T23:59:59.000Z

    This paper details the Indian Solar City Programme, provides an overview of one city's Master Plan and implementation progress, describes NREL's support of the Indian Solar City Programme, and outlines synergies and differences between the Indian and American programs including unique challenges and opportunities India is facing.

  7. EMERGING DIMMINGS OF ACTIVE REGIONS OBSERVED BY THE SOLAR DYNAMICS OBSERVATORY

    SciTech Connect (OSTI)

    Zhang Jun; Yang Shuhong [Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China); Liu Yang; Sun Xudong, E-mail: zjun@nao.cas.cn, E-mail: shuhongyang@nao.cas.cn, E-mail: yliu@sun.stanford.edu, E-mail: xudong@sun.stanford.edu [W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305-4085 (United States)

    2012-12-01T23:59:59.000Z

    Using the observations from the Atmospheric Imaging Assembly and the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory, we statistically investigate the emerging dimmings (EDs) of 24 isolated active regions (IARs) from 2010 June to 2011 May. All the IARs show EDs in lower-temperature lines (e.g., 171 A) at their early emerging stages. Meanwhile, in higher temperature lines (e.g., 211 A), the ED regions brighten continuously. There are two types of EDs: fan-shaped and halo-shaped. There are 19 fan-shaped EDs and 5 halo-shaped ones. The EDs appear to be delayed by several to more than ten hours relative to the first emergence of the IARs. The shortest delay is 3.6 hr and the longest is 19.0 hr. The EDs last from 3.3 hr to 14.2 hr, with a mean duration of 8.3 hr. Before the appearance of the EDs, the emergence rate of the magnetic flux of the IARs is between 1.2 Multiplication-Sign 10{sup 19} Mx hr{sup -1} to 1.4 Multiplication-Sign 10{sup 20} Mx hr{sup -1}. The larger the emergence rate is, the shorter the delay time is. While the dimmings appear, the magnetic flux of the IARs ranges from 8.8 Multiplication-Sign 10{sup 19} Mx to 1.3 Multiplication-Sign 10{sup 21} Mx. These observations imply that the reconfiguration of the coronal magnetic fields due to reconnection between the newly emerging flux and the surrounding existing fields results in a new thermal distribution which leads to a dimming for the cooler channel (171 A) and brightening in the warmer channels.

  8. Study of Adsorption of Methanol in an Activated Carbon and Carbon Nanotube Matrix for Use in a Solar Based Refrigeration Cycle

    E-Print Network [OSTI]

    Sambath, Srivaths

    2012-07-16T23:59:59.000Z

    This thesis seeks to investigate the adsorption capabilities of activated carbon and carbon nanotubes. The adsorption of methanol on both of these substances was tested for their application in a solar based refrigeration cycle. Research on carbon...

  9. 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.

  10. Performance of active solar space-heating systems, 1980-1981 heating season

    SciTech Connect (OSTI)

    Welch, K.; Kendall, P.; Pakkala, P.; Cramer, M.

    1981-01-01T23:59:59.000Z

    Data are provided on 32 solar heating sites in the National Solar Data Network (NSDN). Of these, comprehensive data are included for 14 sites which cover a range of system types and solar applications. A brief description of the remaining sites is included along with system problems experienced which prevented comprehensive seasonal analyses. Tables and discussions of individual site parameters such as collector areas, storage tank sizes, manufacturers, building dimensions, etc. are provided. Tables and summaries of 1980-1981 heating season data are also provided. Analysis results are presented in graphic form to highlight key summary information. Performance indices are graphed for two major groups of collectors - liquid and air. Comparative results of multiple NSDN systems' operation for the 1980-1981 heating season are summarized with discussions of specific cases and conclusions which may be drawn from the data. (LEW)

  11. VELOCITY MEASUREMENTS FOR A SOLAR ACTIVE REGION FAN LOOP FROM HINODE/EIS OBSERVATIONS

    SciTech Connect (OSTI)

    Young, P. R. [College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 (United States); O'Dwyer, B.; Mason, H. E. [Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

    2012-01-01T23:59:59.000Z

    The velocity pattern of a fan loop structure within a solar active region over the temperature range 0.15-1.5 MK is derived using data from the EUV Imaging Spectrometer (EIS) on board the Hinode satellite. The loop is aligned toward the observer's line of sight and shows downflows (redshifts) of around 15 km s{sup -1} up to a temperature of 0.8 MK, but for temperatures of 1.0 MK and above the measured velocity shifts are consistent with no net flow. This velocity result applies over a projected spatial distance of 9 Mm and demonstrates that the cooler, redshifted plasma is physically disconnected from the hotter, stationary plasma. A scenario in which the fan loops consist of at least two groups of 'strands'-one cooler and downflowing, the other hotter and stationary-is suggested. The cooler strands may represent a later evolutionary stage of the hotter strands. A density diagnostic of Mg VII was used to show that the electron density at around 0.8 MK falls from 3.2 Multiplication-Sign 10{sup 9} cm{sup -3} at the loop base, to 5.0 Multiplication-Sign 10{sup 8} cm{sup -3} at a projected height of 15 Mm. A filling factor of 0.2 is found at temperatures close to the formation temperature of Mg VII (0.8 MK), confirming that the cooler, downflowing plasma occupies only a fraction of the apparent loop volume. The fan loop is rooted within a so-called outflow region that displays low intensity and blueshifts of up to 25 km s{sup -1} in Fe XII {lambda}195.12 (formed at 1.5 MK), in contrast to the loop's redshifts of 15 km s{sup -1} at 0.8 MK. A new technique for obtaining an absolute wavelength calibration for the EIS instrument is presented and an instrumental effect, possibly related to a distorted point-spread function, that affects velocity measurements is identified.

  12. A solar active region loop compared with a 2D MHD model

    E-Print Network [OSTI]

    C. Gontikakis; G. J. D. Petrie; H. C. Dara; K. Tsinganos

    2005-03-31T23:59:59.000Z

    We analyzed a coronal loop observed with the Normal Incidence Spectrometer (NIS), which is part of the Coronal Diagnostic Spectrometer (CDS) on board the Solar and Heliospheric Observatory (SOHO). The measured Doppler shifts and proper motions along the selected loop strongly indicate unidirectional flows. Analysing the Emission Measure Curves of the observed spectral lines, we estimated that the temperature along the loop was about 380000 K. We adapted a solution of the ideal MHD steady equations to our set of measurements. The derived energy balance along the loop, as well as the advantages/disadvantages of this MHD model for understanding the characteristics of solar coronal loops are discussed.

  13. Indian Solar Cities Programme: An Overview of Major Activities and Accomplishments (Presentation)

    SciTech Connect (OSTI)

    Kandt, A.

    2012-05-01T23:59:59.000Z

    Indian Solar Cities Programme supports 60 Indian cities in the development of EE and RE projects. Aims to reduce conventional energy demand by 10% by 2013, compared to a baseline year of 2008, and support is provided to municipal corporations for preparing and implementing a master plan.

  14. Magnetic Energy and Helicity Budgets in the Active-Region Solar Corona. I. Linear Force-Free Approximation

    E-Print Network [OSTI]

    M. K. Georgoulis; Barry J. LaBonte

    2007-06-27T23:59:59.000Z

    We self-consistently derive the magnetic energy and relative magnetic helicity budgets of a three-dimensional linear force-free magnetic structure rooted in a lower boundary plane. For the potential magnetic energy we derive a general expression that gives results practically equivalent to those of the magnetic Virial theorem. All magnetic energy and helicity budgets are formulated in terms of surface integrals applied to the lower boundary, thus avoiding computationally intensive three-dimensional magnetic field extrapolations. We analytically and numerically connect our derivations with classical expressions for the magnetic energy and helicity, thus presenting a so-far lacking unified treatment of the energy/helicity budgets in the constant-alpha approximation. Applying our derivations to photospheric vector magnetograms of an eruptive and a noneruptive solar active regions, we find that the most profound quantitative difference between these regions lies in the estimated free magnetic energy and relative magnetic helicity budgets. If this result is verified with a large number of active regions, it will advance our understanding of solar eruptive phenomena. We also find that the constant-alpha approximation gives rise to large uncertainties in the calculation of the free magnetic energy and the relative magnetic helicity. Therefore, care must be exercised when this approximation is applied to photospheric magnetic field observations. Despite its shortcomings, the constant-alpha approximation is adopted here because this study will form the basis of a comprehensive nonlinear force-free description of the energetics and helicity in the active-region solar corona, which is our ultimate objective.

  15. 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

  16. The CoRoT target HD175726: an active star with weak solar-like oscillations

    E-Print Network [OSTI]

    Mosser, B; Appourchaux, T; Barban, C; Baudin, F; Boumier, P; Bruntt, H; Catala, C; Deheuvels, S; García, R A; Gaulme, P; Regulo, C; Roxburgh, I; Samadi, R; Verner, G; Auvergne, M; Baglin, A; Ballot, J; Benomar, O; Mathur, S

    2009-01-01T23:59:59.000Z

    Context. The CoRoT short runs give us the opportunity to observe a large variety of late-type stars through their solar-like oscillations. We report observations of the star HD175726 that lasted for 27 days during the first short run of the mission. The time series reveals a high-activity signal and the power spectrum presents an excess due to solar-like oscillations with a low signal-to-noise ratio. Aims. Our aim is to identify the most efficient tools to extract as much information as possible from the power density spectrum. Methods. The most productive method appears to be the autocorrelation of the time series, calculated as the spectrum of the filtered spectrum. This method is efficient, very rapid computationally, and will be useful for the analysis of other targets, observed with CoRoT or with forthcoming missions such as Kepler and Plato. Results. The mean large separation has been measured to be 97.2+-0.5 microHz, slightly below the expected value determined from solar scaling laws.We also show stro...

  17. Nonlinear force-free models for the solar corona I. Two active regions with very different structure

    E-Print Network [OSTI]

    S. Regnier; E. R. Priest

    2007-03-29T23:59:59.000Z

    With the development of new instrumentation providing measurements of solar photospheric vector magnetic fields, we need to develop our understanding of the effects of current density on coronal magnetic field configurations. The object is to understand the diverse and complex nature of coronal magnetic fields in active regions using a nonlinear force-free model. From the observed photospheric magnetic field we derive the photospheric current density for two active regions: one is a decaying active region with strong currents (AR8151), and the other is a newly emerged active region with weak currents (AR8210). We compare the three-dimensional structure of the magnetic fields for both active region when they are assumed to be either potential or nonlinear force-free. The latter is computed using a Grad-Rubin vector-potential-like numerical scheme. A quantitative comparison is performed in terms of the geometry, the connectivity of field lines, the magnetic energy and the magnetic helicity content. For the old decaying active region the connectivity and geometry of the nonlinear force-free model include strong twist and strong shear and are very different from the potential model. The twisted flux bundles store magnetic energy and magnetic helicity high in the corona (about 50 Mm). The newly emerged active region has a complex topology and the departure from a potential field is small, but the excess magnetic energy is stored in the low corona and is enough to trigger powerful flares.

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

    SciTech Connect (OSTI)

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

    2011-01-20T23:59:59.000Z

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

  19. High Dispersion Spectroscopy of Solar-type Superflare Stars. II. Stellar Rotation, Starspots, and Chromospheric Activities

    E-Print Network [OSTI]

    Notsu, Yuta; Maehara, Hiroyuki; Notsu, Shota; Shibayama, Takuya; Nogami, Daisaku; Shibata, Kazunari

    2014-01-01T23:59:59.000Z

    We conducted high dispersion spectroscopic observations of 50 superflare stars with Subaru/HDS. These 50 stars were selected from the solar-type superflare stars that we had discovered from the Kepler data. More than half (34 stars) of these 50 target superflare stars show no evidence of binarity, and we estimated stellar parameters of these 34 stars in our previous study (Notsu et al. 2015, hereafter called Paper I). According to our previous studies using Kepler data, superflare stars show quasi-periodic brightness variations whose amplitude (0.1-10\\%) is much larger than that of the solar brightness variations (0.01-0.1\\%) caused by the existence of sunspots on the rotating solar surface. In this study, we investigated whether these quasi-periodic brightness variations of superflare stars are explained by the rotation of a star with fairly large starspots, by using stellar parameters derived in Paper I. First, we confirmed that the value of the projected rotational velocity $v \\sin i$ is consistent with th...

  20. Exoplanet-Induced Chromospheric Activity: Realistic Light Curves from Solar-type Magnetic Fields

    E-Print Network [OSTI]

    Steven R. Cranmer; Steven H. Saar

    2007-02-20T23:59:59.000Z

    There is growing observational evidence for some kind of interaction between stars and close-in extrasolar giant planets. Shkolnik et al. reported variability in the chromospheric Ca H and K lines of HD 179949 and upsilon And that seemed to be phased with the planet's orbital period, instead of the stellar rotational period. However, the observations also indicate that the chromospheric light curves do not repeat exactly, which may be expected for a planet plowing through a variable stellar magnetic field. Using the complex solar magnetic field (modeled with the Potential Field Source Surface technique) as a guide, we simulate the shapes of light curves that would arise from planet-star interactions that are channeled along magnetic field lines. We also study the orbit-to-orbit variability of these light curves and how they vary from solar minimum (i.e., a more or less axisymmetric stretched dipole) to solar maximum (a superposition of many higher multipole moments) fields. Considering more complex magnetic fields introduces new difficulties in the interpretation of observations, but it may also lead to valuable new diagnostics of exoplanet magnetospheres.

  1. Solar Equipment Certification

    Broader source: Energy.gov [DOE]

    Minnesota law requires that all active solar space-heating and water-heating systems, sold, offered for sale, or installed on residential and commercial buildings in the state meet Solar Rating and...

  2. University Teams to Showcase Affordable, Energy Efficient Living...

    Office of Environmental Management (EM)

    solar village. For full event information, current standings, high-resolution photos, videos, an event schedule and daily results, visit www.SolarDecathlon.gov. You may also...

  3. HIGH-RESOLUTION HELIOSEISMIC IMAGING OF SUBSURFACE STRUCTURES AND FLOWS OF A SOLAR ACTIVE REGION OBSERVED BY HINODE

    SciTech Connect (OSTI)

    Zhao Junwei; Kosovichev, Alexander G. [W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305-4085 (United States); Sekii, Takashi [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)

    2010-01-01T23:59:59.000Z

    We analyze a solar active region observed by the Hinode Ca II H line using the time-distance helioseismology technique, and infer wave-speed perturbation structures and flow fields beneath the active region with a high spatial resolution. The general subsurface wave-speed structure is similar to the previous results obtained from Solar and Heliospheric Observatory/Michelson Doppler Imager observations. The general subsurface flow structure is also similar, and the downward flows beneath the sunspot and the mass circulations around the sunspot are clearly resolved. Below the sunspot, some organized divergent flow cells are observed, and these structures may indicate the existence of mesoscale convective motions. Near the light bridge inside the sunspot, hotter plasma is found beneath, and flows divergent from this area are observed. The Hinode data also allow us to investigate potential uncertainties caused by the use of phase-speed filter for short travel distances. Comparing the measurements with and without the phase-speed filtering, we find out that inside the sunspot, mean acoustic travel times are in basic agreement, but the values are underestimated by a factor of 20%-40% inside the sunspot umbra for measurements with the filtering. The initial acoustic tomography results from Hinode show a great potential of using high-resolution observations for probing the internal structure and dynamics of sunspots.

  4. 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.

  5. 1.Physics Department, Colorado School of Mines, Golden, CO 2. National Renewable Energy Laboratory, Golden, CO 3. United Solar Ovonic, LLC Troy, MI, United States THERMAL ACTIVATION OF DEEP OXYGEN DEFECT FORMATION AND HYDROGEN EFFUSION

    E-Print Network [OSTI]

    1.Physics Department, Colorado School of Mines, Golden, CO 2. National Renewable Energy Laboratory, Golden, CO 3. United Solar Ovonic, LLC Troy, MI, United States BACKGROUND THERMAL ACTIVATION OF DEEP was partially supported by a DOE grant through United Solar Ovonics, Inc., under the Solar America Initiative

  6. Efficient methylammonium lead iodide perovskite solar cells with active layers from 300 to 900 nm

    SciTech Connect (OSTI)

    Momblona, C.; Malinkiewicz, O.; Soriano, A.; Gil-Escrig, L.; Bandiello, E.; Scheepers, M.; Bolink, H. J., E-mail: henk.bolink@uv.es [Instituto de Ciencia Molecular, Universidad de Valencia, C/Catedrático J. Beltrán 2, 46980 Paterna, Valencia (Spain); Roldán-Carmona, C. [Instituto de Ciencia Molecular, Universidad de Valencia, C/Catedrático J. Beltrán 2, 46980 Paterna, Valencia (Spain); Department of Physical Chemistry and Applied Thermodynamics, University of Córdoba, Campus Rabanales, Ed. C3, 14014, Córdoba (Spain); Edri, E. [Department of Materials and Interfaces, Weizmann Institute of Science, Herzl St. 34, Rehovot 76100 (Israel)

    2014-08-01T23:59:59.000Z

    Efficient methylammonium lead iodide perovskite-based solar cells have been prepared in which the perovskite layer is sandwiched in between two organic charge transporting layers that block holes and electrons, respectively. This configuration leads to stable and reproducible devices that do not suffer from strong hysteresis effects and when optimized lead to efficiencies close to 15%. The perovskite layer is formed by using a dual-source thermal evaporation method, whereas the organic layers are processed from solution. The dual-source thermal evaporation method leads to smooth films and allows for high precision thickness variations. Devices were prepared with perovskite layer thicknesses ranging from 160 to 900 nm. The short-circuit current observed for these devices increased with increasing perovskite layer thickness. The main parameter that decreases with increasing perovskite layer thickness is the fill factor and as a result optimum device performance is obtained for perovskite layer thickness around 300 nm. However, here we demonstrate that with a slightly oxidized electron blocking layer the fill factor for the solar cells with a perovskite layer thickness of 900 nm increases to the same values as for the devices with thin perovskite layers. As a result the power conversion efficiencies for the cells with 300 and 900 nm are very similar, 12.7% and 12%, respectively.

  7. Large Solar Energetic Particle Events Associated with Filament Eruptions Outside of Active Regions

    E-Print Network [OSTI]

    Gopalswamy, N; Akiyama, S; Yashiro, S; Xie, H; Thakur, N; Kahler, S W

    2015-01-01T23:59:59.000Z

    We report on four large filament eruptions (FEs) from solar cycles 23 and 24 that were associated with large solar energetic particle (SEP) events and interplanetary type II radio bursts. The post-eruption arcades corresponded to mostly C-class soft X-ray enhancements, but an M1.0 flare was associated with one event. However, the associated coronal mass ejections (CMEs) were fast (speeds about 1000 km/s) and appeared as halo CMEs in the coronagraph field of view. The interplanetary type II radio bursts occurred over a wide wavelength range indicating the existence of strong shocks throughout the inner heliosphere. No metric type II bursts were present in three events, indicating that the shocks formed beyond 2 to 3 Rs. In one case, there was a metric type II burst with low starting frequency indicating a shock formation height of about 2 Rs. The FE-associated SEP events did have softer spectra (spectral index greater than 4) in the 10 to 100 MeV range, but there were other low-intensity SEP events with spectr...

  8. Module greenhouse with high efficiency of transformation of solar energy, utilizing active and passive glass optical rasters

    SciTech Connect (OSTI)

    Korecko, J.; Jirka, V. [ENKI, o.p.s., Dukelska 145, 379 01 Trebon (Czech Republic); Sourek, B. [ENKI, o.p.s., Dukelska 145, 379 01 Trebon (Czech Republic); Czech Technical University of Prague, Technicka 4, 166 07 Prague (Czech Republic); Cerveny, J. [ENKI, o.p.s., Dukelska 145, 379 01 Trebon (Czech Republic); Institute of Physical Biology, Zamek 136, 373 33 Nove Hrady (Czech Republic)

    2010-10-15T23:59:59.000Z

    Since the eighties of the 20th century, various types of linear glass rasters for architectural usage have been developed in the Czech Republic made by the continuous melting technology. The development was focused on two main groups of rasters - active rasters with linear Fresnel lenses in fixed installation and with movable photo-thermal and/or photo-thermal/photo-voltaic absorbers. The second group are passive rasters based on total reflection of rays on an optical prism. During the last years we have been working on their standardization, exact measuring of their optical and thermal-technical characteristics and on creation of a final product that could be applied in solar architecture. With the project supported by the Ministry of Environment of the Czech Republic we were able to build an experimental greenhouse using these active and passive optical glass rasters. The project followed the growing number of technical objectives. The concept of the greenhouse consisted of interdependence construction - structural design of the greenhouse with its technological equipment securing the required temperature and humidity conditions in the interior of the greenhouse. This article aims to show the merits of the proposed scheme and presents the results of the mathematical model in the TRNSYS environment through which we could predict the future energy balance carried out similar works, thus optimizing the investment and operating costs. In this article description of various technology applications for passive and active utilization of solar radiation is presented, as well as some results of short-term and long-term experiments, including evaluation of 1-year operation of the greenhouse from the energy and interior temperature viewpoints. A comparison of the calculated energy flows in the greenhouse to real measured values, for verification of the installed model is also involved. (author)

  9. THE LIMIT OF MAGNETIC-SHEAR ENERGY IN SOLAR ACTIVE REGIONS

    SciTech Connect (OSTI)

    Moore, Ronald L.; Falconer, David A.; Sterling, Alphonse C., E-mail: ron.moore@nasa.gov [Heliophysics and Planetary Science Office, ZP13, Marshall Space Flight Center, Huntsville, AL 35812 (United States)

    2012-05-01T23:59:59.000Z

    It has been found previously, by measuring from active-region magnetograms a proxy of the free energy in the active region's magnetic field, (1) that there is a sharp upper limit to the free energy the field can hold that increases with the amount of magnetic field in the active region, the active region's magnetic flux content, and (2) that most active regions are near this limit when their field explodes in a coronal mass ejection/flare eruption. That is, explosive active regions are concentrated in a main-sequence path bordering the free-energy-limit line in (flux content, free-energy proxy) phase space. Here, we present evidence that specifies the underlying magnetic condition that gives rise to the free-energy limit and the accompanying main sequence of explosive active regions. Using a suitable free-energy proxy measured from vector magnetograms of 44 active regions, we find evidence that (1) in active regions at and near their free-energy limit, the ratio of magnetic-shear free energy to the non-free magnetic energy the potential field would have is of the order of one in the core field, the field rooted along the neutral line, and (2) this ratio is progressively less in active regions progressively farther below their free-energy limit. Evidently, most active regions in which this core-field energy ratio is much less than one cannot be triggered to explode; as this ratio approaches one, most active regions become capable of exploding; and when this ratio is one, most active regions are compelled to explode.

  10. THE KINEMATICS AND PLASMA PROPERTIES OF A SOLAR SURGE TRIGGERED BY CHROMOSPHERIC ACTIVITY IN AR11271

    SciTech Connect (OSTI)

    Kayshap, P.; Srivastava, Abhishek K. [Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 129 (India)] [Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263 129 (India); Murawski, K., E-mail: kmur@kft.umcs.lublin.pl [Group of Astrophysics, UMCS, ul. Radziszewskiego 10, 20-031 Lublin (Poland)

    2013-01-20T23:59:59.000Z

    We observe a solar surge in NOAA AR11271 using the Solar Dynamics Observatory (SDO) Atmospheric Imaging Assembly 304 A image data on 2011 August 25. The surge rises vertically from its origin up to a height of Almost-Equal-To 65 Mm with a terminal velocity of Almost-Equal-To 100 km s{sup -1}, and thereafter falls and fades gradually. The total lifetime of the surge was Almost-Equal-To 20 minutes. We also measure the temperature and density distribution of the observed surge during its maximum rise and find an average temperature and a density of 2.0 MK and 4.1 Multiplication-Sign 10{sup 9} cm{sup -3}, respectively. The temperature map shows the expansion and mixing of cool plasma lagging behind the hot coronal plasma along the surge. Because SDO/HMI temporal image data do not show any detectable evidence of significant photospheric magnetic field cancellation for the formation of the observed surge, we infer that it is probably driven by magnetic-reconnection-generated thermal energy in the lower chromosphere. The radiance (and thus the mass density) oscillations near the base of the surge are also evident, which may be the most likely signature of its formation by a reconnection-generated pulse. In support of the present observational baseline of the triggering of the surge due to chromospheric heating, we devise a numerical model with conceivable implementation of the VAL-C atmosphere and a thermal pulse as an initial trigger. We find that the pulse steepens into a slow shock at higher altitudes which triggers plasma perturbations exhibiting the observed features of the surge, e.g., terminal velocity, height, width, lifetime, and heated fine structures near its base.

  11. 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...

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

    E-Print Network [OSTI]

    Alania, M V; Wawrzynczak, A

    2015-01-01T23:59:59.000Z

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

  13. In situ monitoring of structure formation in the active layer of polymer solar cells during roll-to-roll coating

    SciTech Connect (OSTI)

    Rossander, Lea H.; Zawacka, Natalia K.; Dam, Henrik F.; Krebs, Frederik C.; Andreasen, Jens W., E-mail: jewa@dtu.dk [Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, DK-4000 (Denmark)

    2014-08-15T23:59:59.000Z

    The active layer crystallization during roll-to-roll coating of organic solar cells is studied in situ. We developed an X-ray setup where the coater unit is an integrated part of the small angle X-ray scattering instrument, making it possible to control the coating process while recording scattering measurements in situ, enabling us to follow the crystal formation during drying. By varying the distance between the coating head and the point where the X-ray beam hits the film, we obtained measurements of 4 different stages of drying. For each of those stages, the scattering from as long a foil as possible is summed together, with the distance from coating head to scattering point kept constant. The results are average crystallographic properties for the active layer coated on a 30 m long foil. With this insight into the dynamics of crystallization in a roll-coated polymer film, we find that the formation of textured and untextured crystallites seems uncorrelated, and happens at widely different rates. Untextured P3HT crystallites form later in the drying process than expected which may explain previous studies speculating that untextured crystallization depends on concentration. Textured crystallites, however, begin forming much earlier and steadily increases as the film dries, showing a development similar to other in situ studies of these materials.

  14. Modeling the time and energy behavior of the GCR intensity in the periods of low activity around the last three solar minima

    E-Print Network [OSTI]

    Krainev, M B; Kalinin, M S; Svirzhevskaya, A K; Svirzhevsky, N S

    2014-01-01T23:59:59.000Z

    Using the simple model for the description of the GCR modulation in the heliosphere and the sets of parameters discussed in the accompanying paper we model some features of the time and energy behavior of the GCR intensity near the Earth observed during periods of low solar activity around three last solar minima. In order to understand the mechanisms underlying these features in the GCR behavior, we use the suggested earlier decomposition of the calculated intensity into the partial intensities corresponding to the main processes (diffusion, adiabatic losses, convection and drifts).

  15. The Confined X-class Flares of Solar Active Region 2192

    E-Print Network [OSTI]

    Thalmann, J K; Temmer, M; Veronig, A M

    2015-01-01T23:59:59.000Z

    The unusually large NOAA active region 2192, observed in October 2014, was outstanding in its productivity of major two-ribbon flares without coronal mass ejections. On a large scale, a predominantly north-south oriented magnetic system of arcade fields served as a strong, also lateral, confinement for a series of large two-ribbon flares originating from the core of the active region. The large initial separation of the flare ribbons, together with an almost absent growth in ribbon separation, suggests a confined reconnection site high up in the corona. Based on a detailed analysis of the confined X1.6 flare on October 22, we show how exceptional the flaring of this active region was. We provide evidence for repeated energy release, indicating that the same magnetic field structures were repeatedly involved in magnetic reconnection. We find that a large number of electrons was accelerated to non-thermal energies, revealing a steep power law spectrum, but that only a small fraction was accelerated to high ener...

  16. Concentrating Solar Power (Revised) (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-11-01T23:59:59.000Z

    The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

  17. Powering Our Sustainable Future (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-07-01T23:59:59.000Z

    One of the Energy Department's most successful outreach efforts, the Solar Decathlon provides sponsors with rich opportunities for recognition - from naming rights to signage and speaking opportunities to special events. Support from the business community is crucial to the success of the competition and the experience of thousands of student decathletes. This sponsorship brochure reveals reasons why sponsors support the U.S. Department of Energy Solar Decathlon and how organizations can become involved as Solar Decathlon sponsors.

  18. Flux Emergence in the Solar Active Region NOAA 11158: The Evolution of Net Current

    E-Print Network [OSTI]

    Vemareddy, P; Karthikreddy, S

    2015-01-01T23:59:59.000Z

    We present a detailed investigation on the evolution of observed net vertical current using a time series of vector magnetograms of the active region (AR) NOAA 11158 obtained from Helioseismic Magnetic Imager. We also discuss the relation of net current to the observed eruptive events. The AR evolved from $\\beta\\gamma$ to $\\beta\\gamma\\delta$ configuration over a period of 6 days. The AR had two sub-regions of activity with opposite chirality: one dominated by sunspot rotation producing a strong CME, the other showing large shear motions producing a strong flare. The net current in each polarity over the CME producing sub-region increased to a maximum and then decreased when the sunspots got separated. The time profile of net current in this sub-region followed the time profile of the rotation rate of the S-polarity sunspot of the same sub-region. The net current in the flaring sub-region showed a sudden increase at the time of the strong flare and remained unchanged till the end of the observation, while the ...

  19. 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...

  20. Noted Ohio State researcher named to Institute of Medicine Carlo M. Croce, an Ohio State geneticist whose research and discoveries are respected around the world, has been named

    E-Print Network [OSTI]

    ; a solar hot air system that uses phase-change technology to reduce heating and cooling loads by up to 20%; and thin-film photovoltaic solar panels that are effective even under overcast skies. The enCORE house of the Institute of Medicine. Solar Decathlon team earns a fifth place finish Ohio State's solar decathlon team

  1. Residential Buildings Integration | Department of Energy

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

    Visitors Tour Solar Decathlon Homes Featuring the Latest in Energy Efficient Building Technology.
    Learn More Visitors Tour...

  2. Ford Plug-In Project: Bringing PHEVs to Market

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

    Lecture, Schenectady Museum, Schenectady, NY (http:www.schenectadymuseum.orgevents.php?month9&year2009) PHI * DOE Solar Decathlon (National Mall, Washington DC) Slide 18 of...

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

    Broader source: Energy.gov [DOE]

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

  4. 25 People x 4 Days + 1 Manual = Team Belgium’s E-Cube

    Broader source: Energy.gov [DOE]

    No, it's not an Ikea manual; it's the instructions for how to construct Team Belgium's "E-Cube" home for the 2011 Solar Decathlon.

  5. Energy Blog | Department of Energy

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

    Department's Solar Decathlon in Washington, D.C. July 9, 2010 A wind turbine tops a Lamar Advertising billboard in Pensacola, Florida | Photo courtesy of Karena Cawthon Florida...

  6. Energy Blog | Department of Energy

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

    as possible, should Hurricane Isaac result in power outages. August 29, 2012 Shedding Light on the Solar Decathlon 2013 Teams Follow the teams through every step of the...

  7. Energy Blog | Department of Energy

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

    house. | Infographic by Sarah Gerrity, Energy Department. Solar Decathlon 2013 Infographic: The Path to a Brighter Future Our latest infographic...

  8. MODELING STATISTICAL PROPERTIES OF SOLAR ACTIVE REGIONS THROUGH DIRECT NUMERICAL SIMULATIONS OF 3D-MHD TURBULENCE

    SciTech Connect (OSTI)

    Malapaka, Shiva Kumar; Mueller, Wolf-Christian [Max-Planck Institute for Plasma Physics, Boltzmannstrasse 2, D-85748 Garching bei Muenchen (Germany)

    2013-09-01T23:59:59.000Z

    Statistical properties of the Sun's photospheric turbulent magnetic field, especially those of the active regions (ARs), have been studied using the line-of-sight data from magnetograms taken by the Solar and Heliospheric Observatory and several other instruments. This includes structure functions and their exponents, flatness curves, and correlation functions. In these works, the dependence of structure function exponents ({zeta}{sub p}) of the order of the structure functions (p) was modeled using a non-intermittent K41 model. It is now well known that the ARs are highly turbulent and are associated with strong intermittent events. In this paper, we compare some of the observations from Abramenko et al. with the log-Poisson model used for modeling intermittent MHD turbulent flows. Next, we analyze the structure function data obtained from the direct numerical simulations (DNS) of homogeneous, incompressible 3D-MHD turbulence in three cases: sustained by forcing, freely decaying, and a flow initially driven and later allowed to decay (case 3). The respective DNS replicate the properties seen in the plots of {zeta}{sub p} against p of ARs. We also reproduce the trends and changes observed in intermittency in flatness and correlation functions of ARs. It is suggested from this analysis that an AR in the onset phase of a flare can be treated as a forced 3D-MHD turbulent system in its simplest form and that the flaring stage is representative of decaying 3D-MHD turbulence. It is also inferred that significant changes in intermittency from the initial onset phase of a flare to its final peak flaring phase are related to the time taken by the system to reach the initial onset phase.

  9. 2010 Solar Program Peer Review Report: An Independent Evaluation of Program Activities for FY2009 and FY2010

    SciTech Connect (OSTI)

    DOE Solar Energy Technologies Program

    2010-12-01T23:59:59.000Z

    This document summarizes the recommendations and evaluations provided by an independent external panel of experts at the DOE Solar Energy Technologies Program's 2010 Program Review meeting, held on May 24?27, 2010, in Washington, D.C.

  10. Simulations of Solar Active

    E-Print Network [OSTI]

    sunspot fine structure as consequence of magneto- convective energy transport in umbra and penumbra. Large

  11. SATELLITE MEASUREMENTS OF MIDDLE ATMOSPHERIC IMPACTS BY SOLAR PROTON EVENTS IN SOLAR CYCLE 23

    E-Print Network [OSTI]

    Jackman, Charles H.

    SATELLITE MEASUREMENTS OF MIDDLE ATMOSPHERIC IMPACTS BY SOLAR PROTON EVENTS IN SOLAR CYCLE 23 C. H) Abstract. Solar cycle 23 was extremely active with seven of the largest twelve solar proton events (SPEs for several months past the solar events in the winter polar regions because of the enhanced NOy. Keywords

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

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01T23:59:59.000Z

    Group. All of these passive solar design activities havean LBL subcontractor of a passive solar design workbook forfrom DOE for their passive solar design. Requirements for an

  13. Solar Energy Program: Chapter from the Energy and Environmental Division Annual Report 1980

    E-Print Network [OSTI]

    Energy and Environment Division

    1981-01-01T23:59:59.000Z

    SOLAR ENERGY PROGRAM PERSONNEL Small Particle SuspensionsStrategies for Active Solar Energy Systems M. Warren, S.M. Wahlig, and S Kanzler. SOLAR ENERGY PROGRAM PERSONNEL

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

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01T23:59:59.000Z

    Suspensions for Solar Energy Collection A. Hunt . . .Strategies for Active Solar Energy Systems M. Warren, S.ENVIRONMENT DIVISION SOLAR ENERGY PROGRAM CHAPTER FROM THE

  15. Solar Energy Program: Chapter from the Energy and Environmental Division Annual Report 1980

    E-Print Network [OSTI]

    Energy and Environment Division

    1981-01-01T23:59:59.000Z

    SOLAR ENERGY PROGRAM PERSONNEL Small Particle SuspensionsStrategies for Active Solar Energy Systems M. Warren, S.tary for Conservation and Solar Energy, Office of Advanced

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

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01T23:59:59.000Z

    Suspensions for Solar Energy Collection A. Hunt . . .Strategies for Active Solar Energy Systems M. Warren, S.Sandia Laboratories and Solar Energy Research Institute (

  17. Solar Energy Program: Chapter from the Energy and Environmental Division Annual Report 1980

    E-Print Network [OSTI]

    Energy and Environment Division

    1981-01-01T23:59:59.000Z

    SOLAR ENERGY PROGRAM PERSONNEL Small Particle SuspensionsStrategies for Active Solar Energy Systems M. Warren, S.ENVIRONMENT DIVISION I SOLAR ENERGY PROGRAM Chapter from t h

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

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01T23:59:59.000Z

    Suspensions for Solar Energy Collection A. Hunt . . .Strategies for Active Solar Energy Systems M. Warren, S.Warren, and A. Heitz • Solar Energy Staff • . . INTRODUCTION

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

    E-Print Network [OSTI]

    Authors, Various

    2010-01-01T23:59:59.000Z

    Suspensions for Solar Energy Collection A. Hunt . . .Strategies for Active Solar Energy Systems M. Warren, S.of Selective Surfaces," Solar Energy A. Addeo et aI. , "

  20. Solar Easements

    Broader source: Energy.gov [DOE]

    New Hampshire's "solar skyspace easement" provisions allow property owners to create solar easements in order to create and preserve a right to unobstructed access to solar energy. Easements remain...

  1. 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...

  2. 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.

  3. Solar | Department of Energy

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

    16, 2014 Energy From the Sun (10 activities) Hands-on explorations to teach intermediate students the scientific concepts of solar energy. July 16, 2014 The Sun and Its Energy (11...

  4. HINODE/EIS SPECTROSCOPIC VALIDATION OF VERY HOT PLASMA IMAGED WITH THE SOLAR DYNAMICS OBSERVATORY IN NON-FLARING ACTIVE REGION CORES

    SciTech Connect (OSTI)

    Testa, Paola [Smithsonian Astrophysical Observatory, 60 Garden street, MS 58, Cambridge, MA 02138 (United States); Reale, Fabio, E-mail: ptesta@cfa.harvard.edu [Dipartimento di Fisica, Universita di Palermo, Piazza del Parlamento 1, 90134 Palermo (Italy)

    2012-05-01T23:59:59.000Z

    We use coronal imaging observations with the Solar Dynamics Observatory/Atmospheric Imaging Assembly (AIA), and Hinode/Extreme-ultraviolet Imaging Spectrometer (EIS) spectral data to explore the potential of narrowband EUV imaging data for diagnosing the presence of hot (T {approx}> 5 MK) coronal plasma in active regions. We analyze observations of two active regions (AR 11281, AR 11289) with simultaneous AIA imaging and EIS spectral data, including the Ca XVII line (at 192.8 A), which is one of the few lines in the EIS spectral bands sensitive to hot coronal plasma even outside flares. After careful co-alignment of the imaging and spectral data, we compare the morphology in a three-color image combining the 171, 335, and 94 A AIA spectral bands, with the image obtained for Ca XVII emission from the analysis of EIS spectra. We find that in the selected active regions the Ca XVII emission is strong only in very limited areas, showing striking similarities with the features bright in the 94 A (and 335 A) AIA channels and weak in the 171 A band. We conclude that AIA imaging observations of the solar corona can be used to track hot plasma (6-8 MK), and so to study its spatial variability and temporal evolution at high spatial and temporal resolution.

  5. 2, 605637, 2005 Influence of solar

    E-Print Network [OSTI]

    Boyer, Edmond

    HESSD 2, 605­637, 2005 Influence of solar activity on hydrological processes J. P´erez-Peraza et al Sciences Discussions Influence of solar activity on hydrological processes J. P´erez-Peraza 1 , A. Leyva;HESSD 2, 605­637, 2005 Influence of solar activity on hydrological processes J. P´erez-Peraza et al

  6. 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. , , . , . . , , , , . , . . .

  7. 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.

  8. STEM Education Programs | Department of Energy

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

    October 2013 < prev next > Sun Mon Tue Wed Thu Fri Sat 29 30 1 2 3 4 5 Solar Decathlon 3:45PM to 8:45PM EDT 6 7 8 9 10 11 12 Solar Decathlon 3:45PM to 8:45PM EDT 13 14 15...

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

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

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

  10. Renewable Energy Finance, Solar Securitization: A Status Report (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-10-01T23:59:59.000Z

    This fact sheet was designed to introduce solar securitization and the activities of NREL and the Solar Access to Public Capital (SAPC) working group to the investment community.

  11. 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...

  12. Solar Physics (2004) 224: 3747 C Springer 2005 Review Paper

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    Solar Physics (2004) 224: 37­47 C Springer 2005 Review Paper LONG-TERM SOLAR ACTIVITY: DIRECT be used before 1850. The behavior of solar activity on longer time scales can be studied only using indicators of solar activity but can be hardly quantitatively interpreted. Cosmogenic isotope records provide

  13. A Si Photocathode Protected and Activated with a Catalytic Ti and Ni Composite Film for Solar Hydrogen Production in Water

    E-Print Network [OSTI]

    Lai, Yi-Hsuan; Park, Hyun S.; Zhang, Jenny Z.; Matthews, Peter D.; Wright, Dominic S.; Reisner, Erwin

    2015-02-04T23:59:59.000Z

    , stable and scalable hybrid photo- electrode for visible-light-driven H2 generation in an aque- ous pH 9.2 electrolyte solution is reported. The photoca- thode consists of a p-type Si substrate layered with a Ti and Ni-containing composite film, which acts... for several hours, and serves as a benchmark non-noble photocathode for solar H2 evolution that operates efficiently under neutral–alka- line conditions. Photoelectrochemical (PEC) water splitting is an attractive strategy to generate the renewable energy...

  14. Solar Policy Environment: New Orleans

    Broader source: Energy.gov [DOE]

    To use unprecedented rebuilding of the city of New Orleans is an opportunity for the Office of Recovery Management and its partners to encourage solar in New Orleans’ energy marketplace. While all Solar Cities grantees are undertaking market transformation activities that will both remove barriers to the adoption of solar technologies and reduce the cost of solar technologies, the reconstruction process affords New Orleans a window of opportunity to structurally alter the ways in which solar technologies are regulated, incentivized, produced, and consumed in the Greater New Orleans area.

  15. Implementing Solar Technologies at Airports

    SciTech Connect (OSTI)

    Kandt, A.; Romero, R.

    2014-07-01T23:59:59.000Z

    Federal agencies, such as the Department of Defense and Department of Homeland Security, as well as numerous private entities are actively pursuing the installation of solar technologies to help reduce fossil fuel energy use and associated emissions, meet sustainability goals, and create more robust or reliable operations. One potential approach identified for siting solar technologies is the installation of solar energy technologies at airports and airfields, which present a significant opportunity for hosting solar technologies due to large amounts of open land. This report focuses largely on the Federal Aviation Administration's (FAA's) policies toward siting solar technologies at airports.

  16. Solar system fault detection

    DOE Patents [OSTI]

    Farrington, R.B.; Pruett, J.C. Jr.

    1984-05-14T23:59:59.000Z

    A fault detecting apparatus and method are provided for use with an active solar system. The apparatus provides an indication as to whether one or more predetermined faults have occurred in the solar system. The apparatus includes a plurality of sensors, each sensor being used in determining whether a predetermined condition is present. The outputs of the sensors are combined in a pre-established manner in accordance with the kind of predetermined faults to be detected. Indicators communicate with the outputs generated by combining the sensor outputs to give the user of the solar system and the apparatus an indication as to whether a predetermined fault has occurred. Upon detection and indication of any predetermined fault, the user can take appropriate corrective action so that the overall reliability and efficiency of the active solar system are increased.

  17. Solar system fault detection

    DOE Patents [OSTI]

    Farrington, Robert B. (Wheatridge, CO); Pruett, Jr., James C. (Lakewood, CO)

    1986-01-01T23:59:59.000Z

    A fault detecting apparatus and method are provided for use with an active solar system. The apparatus provides an indication as to whether one or more predetermined faults have occurred in the solar system. The apparatus includes a plurality of sensors, each sensor being used in determining whether a predetermined condition is present. The outputs of the sensors are combined in a pre-established manner in accordance with the kind of predetermined faults to be detected. Indicators communicate with the outputs generated by combining the sensor outputs to give the user of the solar system and the apparatus an indication as to whether a predetermined fault has occurred. Upon detection and indication of any predetermined fault, the user can take appropriate corrective action so that the overall reliability and efficiency of the active solar system are increased.

  18. Solar: A Clean Energy Source for Utilities (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-07-01T23:59:59.000Z

    Summarizes the activities that the DOE Solar Energy Technologies Program conducts to collaborate with and benenfit utilities with the goal of accelerating solar technologies adoption by removing barriers to solar deployment.

  19. Solar Easements

    Broader source: Energy.gov [DOE]

    Rhode Island allows property owners to establish solar easements in the same manner and with the same effect as a conveyance of an interest in real property. Solar easements must be created in...

  20. Solar Forecasting

    Broader source: Energy.gov [DOE]

    On December 7, 2012, DOE announced $8 million to fund two solar projects that are helping utilities and grid operators better forecast when, where, and how much solar power will be produced at U.S....

  1. Solar Easements

    Broader source: Energy.gov [DOE]

    Kansas' solar easement provisions do not create an automatic right to sunlight. Rather, they allow parties to voluntarily enter into solar easement contracts for the purpose of ensuring adequate...

  2. 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...

  3. Solar cell array interconnects

    DOE Patents [OSTI]

    Carey, P.G.; Thompson, J.B.; Colella, N.J.; Williams, K.A.

    1995-11-14T23:59:59.000Z

    Electrical interconnects are disclosed for solar cells or other electronic components using a silver-silicone paste or a lead-tin (Pb-Sn) no-clean fluxless solder cream, whereby the high breakage of thin (<6 mil thick) solar cells using conventional solder interconnect is eliminated. The interconnects of this invention employs copper strips which are secured to the solar cells by a silver-silicone conductive paste which can be used at room temperature, or by a Pb-Sn solder cream which eliminates undesired residue on the active surfaces of the solar cells. Electrical testing using the interconnects of this invention has shown that no degradation of the interconnects developed under high current testing, while providing a very low contact resistance value. 4 figs.

  4. Solar cell array interconnects

    DOE Patents [OSTI]

    Carey, Paul G. (Mountain View, CA); Thompson, Jesse B. (Brentwood, CA); Colella, Nicolas J. (Livermore, CA); Williams, Kenneth A. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    Electrical interconnects for solar cells or other electronic components using a silver-silicone paste or a lead-tin (Pb-Sn) no-clean fluxless solder cream, whereby the high breakage of thin (<6 mil thick) solar cells using conventional solder interconnect is eliminated. The interconnects of this invention employs copper strips which are secured to the solar cells by a silver-silicone conductive paste which can be used at room temperature, or by a Pb-Sn solder cream which eliminates undesired residue on the active surfaces of the solar cells. Electrical testing using the interconnects of this invention has shown that no degradation of the interconnects developed under high current testing, while providing a very low contact resistance value.

  5. Living Rev. Solar Phys., 5, (2008), 3 http://www.livingreviews.org/lrsp-2008-3 in solar physics

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    Living Rev. Solar Phys., 5, (2008), 3 http://www.livingreviews.org/lrsp-2008-3 in solar physics L I V I N G REVIEWS A History of Solar Activity over Millennia Ilya G. Usoskin Sodankyl¨a Geophysical here is a review of present knowledge of the long-term behavior of solar activity on a multi

  6. 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

  7. 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:

  8. 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.

  9. Solar Mapper

    Broader source: Energy.gov [DOE]

    Interactive, online mapping tool providing access to spatial data related to siting utility-scale solar facilities in the southwestern United States.

  10. 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...

  11. Solar Energy.

    E-Print Network [OSTI]

    Bafana, Ramzi

    2014-01-01T23:59:59.000Z

    ??This thesis is about Photovoltaic (PV) cells and its stresses in various directions by calculating the power generated using solar cells under different conditions to… (more)

  12. 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.

  13. Solar America Cities Awards, Solar Energy Technologies Program, Fact Sheet, March 2009

    SciTech Connect (OSTI)

    Not Available

    2009-03-01T23:59:59.000Z

    This publication represents an ongoing effort to support outreach activities through the Solar America Cities program. The two-page fact sheet offers an overview of the SAC program and lists specific resources for more information on developing solar programs.

  14. Market assessment for active solar heating and cooling products. Category B: a survey of decision-makers in the HVAC marketplace. Final report

    SciTech Connect (OSTI)

    None

    1980-09-01T23:59:59.000Z

    A comprehensive evaluation of the market for solar heating and cooling products for new and retrofit markets is reported. The emphasis is on the analysis of solar knowledge among HVAC decision makers and a comprehensive evaluation of their solar attitudes and behavior. The data from each of the following sectors are described and analyzed: residential consumers, organizational and manufacturing buildings, HVAC engineers and architects, builders/developers, and commercial/institutional segments. (MHR)

  15. Photovoltaic solar system connected to the electric power grid operating as active power generator and reactive power compensator

    SciTech Connect (OSTI)

    Albuquerque, Fabio L.; Moraes, Adelio J.; Guimaraes, Geraldo C.; Sanhueza, Sergio M.R.; Vaz, Alexandre R. [Universidade Federal de Uberlandia, Uberlandia-MG, CEP 38400-902 (Brazil)

    2010-07-15T23:59:59.000Z

    In the case of photovoltaic (PV) systems acting as distributed generation (DG) systems, the DC energy that is produced is fed to the grid through the power-conditioning unit (inverter). The majority of contemporary inverters used in DG systems are current source inverters (CSI) operating at unity power factor. If, however, we assume that voltage source inverters (VSI) can replace CSIs, we can generate reactive power proportionally to the remaining unused capacity at any given time. According to the theory of instantaneous power, the inverter reactive power can be regulated by changing the amplitude of its output voltage. In addition, the inverter active power can be adjusted by modifying the phase angle of its output voltage. Based on such theory, both the active power supply and the reactive power compensation (RPC) can be carried out simultaneously. When the insolation is weak or the PV modules are inoperative at night, the RPC feature of a PV system can still be used to improve the inverter utilisation factor. Some MATLAB simulation results are included here to show the feasibility of the method. (author)

  16. Constraining magnetic-activity modulations in 3~solar-like stars observed by CoRoT and NARVAL

    E-Print Network [OSTI]

    Mathur, S; Morgenthaler, A; Salabert, D; Petit, P; Ballot, J; Regulo, C; Catala, C

    2012-01-01T23:59:59.000Z

    Stellar activity cycles are the manifestation of dynamo process running in the stellar interiors. They have been observed during years to decades thanks to the measurement of stellar magnetic proxies at the surface of the stars such as the chromospheric and X-ray emissions, and the measurement of the magnetic field with spectropolarimetry. However, all of these measurements rely on external features that cannot be visible during for example, a Maunder-type minimum. With the advent of long observations provided by space asteroseismic missions, it has been possible to pierce inside the stars and study their properties. Moreover, the acoustic-mode properties are also perturbed by the presence of these dynamos. We track the temporal variations of the amplitudes and frequencies of acoustic modes allowing us to search for signature of magnetic activity cycles, as has already been done in the Sun and in the CoRoT target HD49933. We use asteroseimic tools and more classical spectroscopic measurements performed with t...

  17. Energy Blog | Department of Energy

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

    September 29, 2011 "First Light," the solar home from New Zealand, stands complete on the first day of the 2011 U.S. Department of Energy Solar Decathlon. The 25-student team from...

  18. Systems Integration: 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 systems integration subprogram.

  19. Possible solar cycle variations in the convection zone

    E-Print Network [OSTI]

    Sarbani Basu; H. M. Antia

    2000-01-26T23:59:59.000Z

    Using data from the Global Oscillations Network Group (GONG) that covers the period from 1995 to 1998 we study the change in frequencies of solar oscillations with solar activity. From these frequencies we attempt to determine any possible variation in solar structure with solar activity. We do not find any evidence of a change in the convection zone depth or extent of overshoot below the convection zone during the solar cycle.

  20. The HARPS search for southern extra-solar planets XXXV. Planetary systems and stellar activity of the M dwarfs GJ 3293, GJ 3341, and GJ 3543

    E-Print Network [OSTI]

    Astudillo-Defru, N; Delfosse, X; Segransan, D; Forveille, T; Bouchy, F; Gillon, M; Lovis, C; Mayor, M; Neves, V; Pepe, F; Perrier, C; Queloz, D; Rojo, P; Santos, N C; Udry, S

    2014-01-01T23:59:59.000Z

    Context. Planetary companions of a fixed mass induce larger amplitude reflex motions around lower-mass stars, which helps make M dwarfs excellent targets for extra-solar planet searches. State of the art velocimeters with $\\sim$1m/s stability can detect very low-mass planets out to the habitable zone of these stars. Low-mass, small, planets are abundant around M dwarfs, and most known potentially habitable planets orbit one of these cool stars. Aims. Our M-dwarf radial velocity monitoring with HARPS on the ESO 3.6m telescope at La Silla observatory makes a major contribution to this sample. Methods. We present here dense radial velocity (RV) time series for three M dwarfs observed over $\\sim5$ years: GJ 3293 (0.42M$_\\odot$), GJ 3341 (0.47M$_\\odot$), and GJ 3543 (0.45M$_\\odot$). We extract those RVs through minimum $\\chi^2$ matching of each spectrum against a high S/N ratio stack of all observed spectra for the same star. We then vet potential orbital signals against several stellar activity indicators, to dis...

  1. Solar cycle variation in solar f-mode frequencies and radius

    E-Print Network [OSTI]

    H. M. Antia; Sarbani Basu; J. Pintar; B. Pohl

    2000-01-17T23:59:59.000Z

    Using data from the Global Oscillation Network Group (GONG) covering the period from 1995 to 1998, we study the change with solar activity in solar f-mode frequencies. The results are compared with similar changes detected from the Michelson Doppler Imager (MDI) data. We find variations in f-mode frequencies which are correlated with solar activity indices. If these changes are due to variation in solar radius then the implications are that the solar radius decreases by about 5 km from minimum to maximum activity.

  2. A solar concentrating photovoltaic / thermal collector J.S. Coventry

    E-Print Network [OSTI]

    A solar concentrating photovoltaic / thermal collector J.S. Coventry Centre for Sustainable Energy.Coventry@anu.edu.au Abstract Australia is a good location for solar concentrator applications. Current activities in Australia OF THE SOLAR RESOURCE IN AUSTRALIA Australia has relatively high solar insolation, as shown in figure 1

  3. Solar Rights

    Broader source: Energy.gov [DOE]

    Hawaii law prohibits the creation of any covenant or restriction contained in any document restricting the installation or use of a solar energy system on a residential dwelling or townhouse. ...

  4. adolescent physical activity: Topics by E-print Network

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

    Bandettini, Peter A. 74 Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra. Physics Websites Summary: Petrovay: Solar physics Activity phenomena 1...

  5. adult physical activity: Topics by E-print Network

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

    Bandettini, Peter A. 85 Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra. Physics Websites Summary: Petrovay: Solar physics Activity phenomena 1...

  6. alberta physical activity: Topics by E-print Network

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

    Bandettini, Peter A. 97 Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra. Physics Websites Summary: Petrovay: Solar physics Activity phenomena 1...

  7. adapted physical activity: Topics by E-print Network

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

    Bandettini, Peter A. 87 Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra. Physics Websites Summary: Petrovay: Solar physics Activity phenomena 1...

  8. asymptomatic physically active: Topics by E-print Network

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

    Bandettini, Peter A. 53 Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra. Physics Websites Summary: Petrovay: Solar physics Activity phenomena 1...

  9. active geological structures: Topics by E-print Network

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

    Hasselmo, Michael 93 Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra. Physics Websites Summary: Petrovay: Solar physics Activity phenomena 1...

  10. activator ntrc1 structural: Topics by E-print Network

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

    Hasselmo, Michael 33 Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra. Physics Websites Summary: Petrovay: Solar physics Activity phenomena 1...

  11. abilities physical activity: Topics by E-print Network

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

    Bandettini, Peter A. 68 Petrovay: Solar physics Activity phenomena 1 Overall structure: umbra + penumbra. Physics Websites Summary: Petrovay: Solar physics Activity phenomena 1...

  12. The Telescope Control System of the New Solar Telescope at Big Bear Solar Observatory

    E-Print Network [OSTI]

    mirror (M1) and its alignment with the secondary mirror (M2) will be actively controlled. HighThe Telescope Control System of the New Solar Telescope at Big Bear Solar Observatory G. Yang*a, J of Technology, 323 Martin Luther King Blvd., Newark, NJ 07104; bBig Bear Solar Observatory, 40386 North Shore

  13. The Sun and Climate Solar Irradiance

    E-Print Network [OSTI]

    Walter, Frederick M.

    The Sun and Climate #12;Solar Irradiance The Solar Constant f = 1.4 x 106 erg/cm2/s. Over is higher when the Sun is more magnetically active. ·The Sun was magnetically active, and the climate the Sun Drive Climate? #12;The Temperature's Rising #12;Sunspots and CO2 What is Cause and What is Effect

  14. 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 . . . . . . . . . . . . .

  15. 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...

  16. 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

  17. 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

  18. 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

  19. 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

  20. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    room )I I( I I ,i I CALIFORNIA SOLAR DATA MANUAL I. ! I ienergy resource. The California Solar Data Manual describestowards fulfilling California's solar data needs is the

  1. 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

  2. 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

  3. 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-

  4. Solar Resource Assessment

    Broader source: Energy.gov [DOE]

    DOE solar resource research focuses on understanding historical solar resource patterns and making future predictions, both of which are needed to support reliable power system operation. As solar...

  5. Solar powered desalination system

    E-Print Network [OSTI]

    Mateo, Tiffany Alisa

    2011-01-01T23:59:59.000Z

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

  6. Boston solar retrofits: studies of solar access and economics

    SciTech Connect (OSTI)

    Shapiro, M.

    1980-11-01T23:59:59.000Z

    Studies of solar access and solar retrofit economics are described for residential applications in the City of Boston. The study of solar access was based upon a random sample of 94 buildings; the sample was stratified to ensure a broad geographic representation from the city's various sections. Using available data on the heights and orientations of the sampled structures and surrounding buildings, each building's hourly access to sunlight was computed separately for the roof and south facing walls. These data were then aggregated by broad structural classifications in order to provide general measures of solar access. The second study was a comparative analysis of the economics of several solar heating and hot water systems. An active hot water system, installed using pre-assembled, commercially purchased equipment, was selected as a reference technology. A variety of measures of economic performance were computed for this system, with and without existing tax credits and under various financing arrangements. Next, a number of alternative approaches for solar space and water heating were identified from interviews with individuals and groups involved in solar retrofit projects in the Boston area. The objective was to identify approaches that many of those interviewed believe to be low-cost means of applying solar energy in residential settings. The approaches selected include thermal window covers, wall collectors, bread box water heaters, and sun spaces. Preliminary estimates of the performance of several representative designs were developed and the economics of these designs evaluated.

  7. Bites and B-Roll: Announcments of the Architecture Contest Winners

    ScienceCinema (OSTI)

    None

    2010-09-01T23:59:59.000Z

    Broadcast-quality downloads of this video are available free and unrestricted at http://stratacomm.net/solar-decathlon... Video contains announcements of the architecture awards announcement at the 2009 Solar Decathlon. Includes announcement and house b-roll of 1st place winner Team California and 2nd place winner Rice University's houses, general Solar Village b-roll, and bites from students and architecture experts

  8. SOLAR ENERGY PROGRAM. CHAPTER FROM THE ENERGY AND ENVIRONMENT ANNUAL REPORT 1978

    E-Print Network [OSTI]

    authors, Various

    2011-01-01T23:59:59.000Z

    PG&E/LBL Solar Data Network D. Anson . • . • . . • The RoleWahlig Development of Solar-Driven Ammonia-Water AbsorptionSupport Activities for DOE Solar Heating and Cooling

  9. 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

  10. Solar Energy Program: Chapter from the Energy and Environmental Division Annual Report 1980

    E-Print Network [OSTI]

    Energy and Environment Division

    1981-01-01T23:59:59.000Z

    SOLAR ENERGY PROGRAM PERSONNEL Small Particle SuspensionsStrategies for Active Solar Energy Systems M. Warren, S.R a d i a t i o n , " Solar Energy, v o l . 4, no. 3 , 1960,

  11. Shenandoah parabolic dish solar collector

    SciTech Connect (OSTI)

    Kinoshita, G.S.

    1985-01-01T23:59:59.000Z

    The objectives of the Shenandoah, Georgia, Solar Total Energy System are to design, construct, test, and operate a solar energy system to obtain experience with large-scale hardware systems for future applications. This report describes the initial design and testing activities conducted to select and develop a collector that would serve the need of such a solar total energy system. The parabolic dish was selected as the collector most likely to maximize energy collection as required by this specific site. The fabrication, testing, and installation of the parabolic dish collector incorporating improvements identified during the development testing phase are described.

  12. Solar ADEPT: Efficient Solar Energy Systems

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    Solar ADEPT Project: The 7 projects that make up ARPA-E's Solar ADEPT program, short for 'Solar Agile Delivery of Electrical Power Technology,' aim to improve the performance of photovoltaic (PV) solar energy systems, which convert the sun's rays into electricity. Solar ADEPT projects are integrating advanced electrical components into PV systems to make the process of converting solar energy to electricity more efficient.

  13. Infrared Imaging Solar Spectrograph at Purple Mountain Observatory Hui Li , Zhongyu Fan and Jianqi You

    E-Print Network [OSTI]

    Li, Hui

    of solar activity. Studies of solar flares have scored great success. However, some problems pertinent to solar flare, such as energy transportation and line broadening mechanisms, have puzzled solar physicists formed at different heights in the solar atmosphere to assure the energy transportation is via thermal

  14. Solar: A Clean Energy Source for Utilities (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-09-01T23:59:59.000Z

    The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts with utilities to remove the technical, regulatory, and market challenges they face in deploying solar technologies.

  15. 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

  16. Baseline study of US industry solar exports

    SciTech Connect (OSTI)

    Jacobius, T M; Levi, R S; Bereny, J A

    1980-10-01T23:59:59.000Z

    This study is a detailed aggregate profile of US solar export activity in 1979 based on a survey of all segments of the solar industry. It identifies the dollar volume of exports by technology: (1) solar heating and cooling products; (2) wind products; (3) photovoltaics; (4) solar thermal electric; (5) OTEC and biomass; and (6) support products and services. The study offers to government and industry groups, for the first time, comprehensive information with which to formulate export goals and assistance measures based on the current realities of the solar export marketplace. Specific and aggregate recommendations which can lead to identification of realistic solar export opportunities and development of solar export markets are included.

  17. 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.................................................................................................. 2 2.2 Solar Radiation Data for Calculating Solar Energy Resource .................... 3 3 Campus.1 Evaluation of Suitability for Solar Energy Generation................................ 12 4.2 Solar

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

    SciTech Connect (OSTI)

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

    2013-06-13T23:59:59.000Z

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

  19. Market assessment for active solar heating and cooling products. Category B: A survey of decision makers in the HVAC market place. Survey instruments

    SciTech Connect (OSTI)

    Lilien, G. L.; Johnston, P. E.

    1980-09-01T23:59:59.000Z

    Telephone screener questionnaires and mail-out questionnaires for marketing surveys for solar heating and cooling equipment are presented. Questionnaires are included for the residential segment, industrial segment, HVAC professionals segment, builder/developer segment, and the commercial segment. No results are reported. (WHK)

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

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

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

  1. Webinar: Engaging Students in Energy (Text Version) | Department...

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

    are in the midst of trying to figure out what their specific requirements will be for the 2014 competition, and like the Collegiate Wind and the Solar Decathlon competitions this...

  2. Energy Blog | Department of Energy

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

    Rain and Shine Friday marked the end of the Solar Decathlon competition. Team Germany won (for the second time) in a very competitive field, in a ceremony marked by gray...

  3. Request for Proposals Number RXL-4-42172 entitled, "U.S. Department...

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

    for Sustainable Energy, LLC Request for Proposals Number RXL-4-42172 "U.S. Department of Energy Solar Decathlon 2015 Construction Cost Estimates" REQUEST FOR PROPOSALS READ THIS...

  4. Appendix A - Statement of Work

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

    ATTACHMENT 1 to NREL RFP No. RXL-4-42172 APPENDIX A STATEMENT OF WORK "U.S. Department of Energy Solar Decathlon 2015 Construction Cost Estimates" 071614 1.0 BACKGROUND The U.S....

  5. Blog Archive | Department of Energy

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

    August 29, 2012 Shedding Light on the Solar Decathlon 2013 Teams Follow the teams through every step of the competition on social media. August 20, 2012 Freda Hopper serves as a...

  6. Maryland Water Resources Research Center Annual Technical Report

    E-Print Network [OSTI]

    the topic of Flood Risk and Climate Change. Finally, the Center contributed seed funding to a multi Stormwater & Wastewater Treatment in WaterShed, Maryland's Solar Decathlon 2011 Entry, Amy Gardner

  7. Energy Blog | Department of Energy

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

    June 2, 2011 A model of Team Canada's TRTL house | Courtest of Riley Brandt, Team Canada Team Canada Returns to the Solar Decathlon with First Nation Values in Mind Team Canada's...

  8. Recognizing Innovation in Green Building | Department of Energy

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

    Recognizing Innovation in Green Building Recognizing Innovation in Green Building February 6, 2013 - 8:45am Addthis Visitors tour the U.S. Department of Energy Solar Decathlon 2011...

  9. OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...

    Office of Scientific and Technical Information (OSTI)

    DOE's Solar Decathlon - Building the Future OSTIblog Comment policy We welcome your comments and your submission of web links to the OSTIblog and look forward to civil discourse on...

  10. Energy Blog | Department of Energy

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

    team invited all of their sponsors to the event. | Photo courtesy of the University of North Carolina at Charlotte. Solar Decathlon 2013: Raising More Than Just Walls Part two...

  11. 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.

  12. 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.

  13. Living Rev. Solar Phys., 10, (2013), 1 http://www.livingreviews.org/lrsp-2013-1

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    Living Rev. Solar Phys., 10, (2013), 1 http://www.livingreviews.org/lrsp-2013-1 (Update of lrsp-2008-3) in solar physics L I V I N G REVIEWS A History of Solar Activity over Millennia Ilya G. Usoskin is a review of present knowledge of the long-term behavior of solar activity on a multi-millennial timescale

  14. 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...

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

    Open Energy Info (EERE)

    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 Photovoltaic...

  16. Tucson, Arizona: Solar in Action (Brochure), Solar America Cities...

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

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

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

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

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

  18. Pittsburgh, Pennsylvania: Solar in Action (Brochure), Solar America...

    Energy Savers [EERE]

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

  19. 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...

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

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

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

  1. EIS-0449: Solar Millennium Blythe Solar Power Project in Riverside...

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

    9: Solar Millennium Blythe Solar Power Project in Riverside County, CA EIS-0449: Solar Millennium Blythe Solar Power Project in Riverside County, CA December 10, 2010 EIS-0449:...

  2. EA-1683: Abengoa Solar's Solana Concentrating Solar Power Facility...

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

    83: Abengoa Solar's Solana Concentrating Solar Power Facility, Gila Bend, AZ EA-1683: Abengoa Solar's Solana Concentrating Solar Power Facility, Gila Bend, AZ May 3, 2010 EA-1683:...

  3. San Antonio, Texas: Solar in Action (Brochure), Solar America...

    Energy Savers [EERE]

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

  4. Denver, Colorado: Solar in Action (Brochure), Solar America Cities...

    Energy Savers [EERE]

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

  5. Milwaukee, Wisconsin: Solar in Action (Brochure), Solar America...

    Energy Savers [EERE]

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

  6. San Diego, California: Solar in Action (Brochure), Solar America...

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

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

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

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

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

  8. Madison, Wisconsin: Solar in Action (Brochure), Solar America...

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

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

  9. 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.

  10. Solar Policy Environment: Salt Lake

    Broader source: Energy.gov [DOE]

    The overall objective of the “Solar Salt Lake” (SSL) team is to develop a fully-scoped city and county-level implementation plan that will facilitate at least an additional ten megawatts of solar photovoltaic (PV) installations in the government, commercial, industrial, and residential sectors by 2015. To achieve this aggressive goal, the program strategy includes a combination of barrier identification, research, and policy analysis that utilizes the input of various stakeholders. Coupled with these activities will be the development and implementation of pilot installations in the government and residential sectors, and broad outreach to builders and potential practitioners of solar energy products in the process. In this way, while creating mechanisms to enable a demand for solar, SSL will also facilitate capacity building for suppliers, thereby helping to ensure long-term sustainability for the regional market.

  11. 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.

  12. 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: AlternativeEnvironment,Institutes and ResponseStaffServicesFuture |Assurance PlanCD-4),Solar96426

  13. THE SOLAR WIND PLASMA Dr. Joe Borovsky

    E-Print Network [OSTI]

    Shyy, Wei

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

  14. Update on the Million Solar Roofs Initiative

    SciTech Connect (OSTI)

    Herig, C.

    1999-05-09T23:59:59.000Z

    The Million Solar Roofs Initiative, announced by the President in June of 1997, spans a period of twelve years and intends to increase domestic deployment of solar technologies. This paper presents an overview of the development of the initiative and significant activities to date.

  15. 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 .

  16. 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.

  17. Optical Durability of Candidate Solar Reflectors for Concentrating Solar Power

    SciTech Connect (OSTI)

    Kennedy, C. E.; Terwilliger, K.

    2007-01-01T23:59:59.000Z

    Concentrating solar power (CSP) technologies use large mirrors to collect sunlight to convert thermal energy to electricity. The viability of CSP systems requires the development of advanced reflector materials that are low in cost and maintain high specular reflectance for extended lifetimes under severe outdoor environments. The long-standing goals for a solar reflector are specular reflectance above 90% into a 4 mrad half-cone angle for at least 10 years outdoors with a cost of less than $13.8/m{sup 2} (the 1992 $10.8/m{sup 2} goal corrected for inflation to 2002 dollars) when manufactured in large volumes. Durability testing of a variety of candidate solar reflector materials at outdoor test sites and in laboratory accelerated weathering chambers is the main activity within the Advanced Materials task of the CSP Program at the National Renewable Energy Laboratory (NREL) in Golden, Colorado. Test results to date for several candidate solar reflector materials will be presented. These include the optical durability of thin glass, thick glass, aluminized reflectors, front-surface mirrors, and silvered polymer mirrors. The development, performance, and durability of these materials will be discussed. Based on accelerated exposure testing the glass, silvered polymer, and front-surface mirrors may meet the 10 year lifetime goals, but at this time because of significant process changes none of the commercially available solar reflectors and advanced solar reflectors have demonstrated the 10 year or more aggressive 20 year lifetime goal.

  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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment ofatRenewable Energy »Buildings Solar

  19. E-Print Network 3.0 - activity cycles Sample Search Results

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

    Sciences and Ecology 3 UNCORRECTEDPROOF 2 A method to evaluate the level of solar activity at Summary: the level of solar activity at the remainder of a progressing...

  20. E-Print Network 3.0 - activation heat Sample Search Results

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

    to collect and distribute solar heat. These buildings have active solar heating systems. Active... in an ordinary fur- nace system. ... Source: North Carolina State...

  1. SOLAR-CYCLE VARIATION OF SOUND SPEED NEAR THE SOLAR SURFACE

    SciTech Connect (OSTI)

    Rabello-Soares, M. C., E-mail: cristina@sun.stanford.edu [W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305 (United States)

    2012-02-01T23:59:59.000Z

    We present evidence that the sound-speed variation with solar activity has a two-layer configuration, similar to the one observed below an active region, which consists of a negative layer near the solar surface and a positive one in the layer immediately below the first one. Frequency differences between the activity minimum and maximum of solar cycle 23, obtained applying global helioseismology to the Michelson Doppler Imager on board the Solar and Heliospheric Observatory, is used to determine the sound-speed variation from below the base of the convection zone to a few Mm below the solar surface. We find that the sound speed at solar maximum is smaller than at solar minimum at the limit of our determination (5.5 Mm). The min-to-max difference decreases in absolute values until {approx}7 Mm. At larger depths, the sound speed at solar maximum is larger than at solar minimum and the difference increases with depth until {approx}10 Mm. At this depth, the relative difference ({delta}c{sup 2}/c{sup 2}) is less than half of the value observed at the lowest depth determination. At deeper layers, it slowly decreases with depth until there is no difference between maximum and minimum activity.

  2. NREL showcase solar systems and energy efficient design

    SciTech Connect (OSTI)

    NONE

    1995-12-31T23:59:59.000Z

    THe Thermal Test Facility at NREL, which should be completed in the summer of 1996, will incorporate natural lighting from clerestories and may other solar and energy-efficiency features; roof-mounted solar collectors, which will be monitored as part of NREL`s work on active solar systems, will help to heat water and interior spaces in the building.

  3. LONG-TERM SOLAR CYCLE EVOLUTION: REVIEW OF RECENT DEVELOPMENTS

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    LONG-TERM SOLAR CYCLE EVOLUTION: REVIEW OF RECENT DEVELOPMENTS I. G. USOSKIN1 and K. MURSULA2 1 September 2003) Abstract. The sunspot number series forms the longest directly observed index of solar of the recent achievements and findings in long-term evolution of solar activity cycles such as determinism

  4. 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

  5. Solar forecasting review

    E-Print Network [OSTI]

    Inman, Richard Headen

    2012-01-01T23:59:59.000Z

    P(t) and the boring solar sensor. Denoting the bulk veloci ¯equipped with solar irradiance sensors, see Figure 10.3.f that utilizes the low solar cost sensor network deployment

  6. 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 should attend if you.... · ... work in the solar energy market

  7. Solar Equipment Certification

    Broader source: Energy.gov [DOE]

    Under the Solar Energy Standards Act of 1976, the Florida Solar Energy Center (FSEC) is responsible for certifying all solar equipment sold in Florida. A manufacturer who wishes to have their...

  8. Solar Contractor Licensing

    Broader source: Energy.gov [DOE]

    Nevada law requires that solar energy system installers be licensed by the Nevada State Contractors Board. Contractors may be licensed under License Classification C-37 (solar contracting for solar...

  9. Solar Heating Contractor Licensing

    Broader source: Energy.gov [DOE]

    Michigan offers a solar heating contractor specialty license to individuals who have at least three years of experience installing solar equipment under the direction of a licensed solar contractor...

  10. 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...

  11. Sandia National Laboratories: solar

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational Solar Thermal Test Facility On March 2, 2011,

  12. Sandia National Laboratories: solar

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational Solar Thermal Test Facility On March 2,

  13. Sandia National Laboratories: solar

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational Solar Thermal Test Facility On March 2,Molten

  14. Sandia National Laboratories: solar

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational Solar Thermal Test Facility On March

  15. Sandia National Laboratories: solar

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational Solar Thermal Test Facility On MarchSunShot

  16. 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.

  17. 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.

  18. Property Tax Exclusion for Solar Energy Systems

    Broader source: Energy.gov [DOE]

    '''''Note: The California State Board of Equalization (BOE) approved new [http://www.boe.ca.gov/proptaxes/pdf/lta12053.pdf guidelines] for the Active Solar Energy Systems New Construction Exclusion...

  19. Research & Development Needs for Building-Integrated Solar Technologie...

    Energy Savers [EERE]

    photovoltaic-thermal systems (PVT), active solar lighting, and building-integrated photovoltaics (BIPV). View the full report Report: Research & Development Needs for...

  20. 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...

  1. 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...

  2. Solar heating in Colombia.

    E-Print Network [OSTI]

    Skytt, Johanna

    2012-01-01T23:59:59.000Z

    ?? This report describes the process of a thesis implemented in Colombia concerning solar energy. The project was to install a self-circulating solar heating system,… (more)

  3. Solar | Department of Energy

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

    Concentrating Solar Power Plant The Ivanpah Solar Energy Generating System has the capacity to generate 392 megawattsof clean electricity -- enough to power 94,400 average...

  4. Application of solar energy.

    E-Print Network [OSTI]

    Li, Jingcheng

    2010-01-01T23:59:59.000Z

    ??The purpose of the project is to learn the principle and application of solar energy and to know the situation of solar energy in China… (more)

  5. Solar Contractor Licensing

    Broader source: Energy.gov [DOE]

    Hawaii offers several specialty licenses for solar contractors through Hawaii’s Department of Commerce and Consumer Affairs. The following specialty licenses are available: Solar Power Systems...

  6. 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.

  7. 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...

  8. 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

  9. Subsidizing Global Solar Power.

    E-Print Network [OSTI]

    Arnesson, Daniel

    2013-01-01T23:59:59.000Z

    ?? With national cuts on solar PV subsidies and the current “oversupply” of panels, the global solar market is clearly threatened by a contraction. Yet,… (more)

  10. Concentrated Solar Power Generation.

    E-Print Network [OSTI]

    Jin, Zhilei

    2013-01-01T23:59:59.000Z

    ??Solar power generation is the most promising technology to transfer energy consumption reliance from fossil fuel to renewable sources. Concentrated solar power generation is a… (more)

  11. Solar power satellites.

    E-Print Network [OSTI]

    Palmas, Alessandro

    2013-01-01T23:59:59.000Z

    ??During energy crisis at the end of the Sixties, a new idea to exploit solar energy arose: Solar Power Satellites. These satellites need a huge… (more)

  12. 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...

  13. 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.

  14. Sandia National Laboratories: Solar Resource Assessment

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

    Tagged with: Energy * photovoltaic * Photovoltaics * PV * Renewable Energy * solar * Solar Energy * Solar Research * Solar Resource Assessment Comments are closed. Renewable...

  15. 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

  16. SOLAR ENERGY Andrew Blakers

    E-Print Network [OSTI]

    and conversion methods usually entail few environmental problems. Solar energy includes both direct radiationSOLAR 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

  17. 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.

  18. 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.

  19. Solar Policy Environment: Boston

    Broader source: Energy.gov [DOE]

    City of Boston’s objective in creating Solar Boston is to maximize solar technology’s role in the City’s sustainable development, educational and emergency preparedness policies. Solar Boston’s objective is the installation of solar technology on all feasible and appropriate locations throughout Boston.

  20. 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

  1. Solar flux variability of Mars' exosphere densities and temperatures Jeffrey M. Forbes,1

    E-Print Network [OSTI]

    Forbes, Jeffrey

    Solar flux variability of Mars' exosphere densities and temperatures Jeffrey M. Forbes,1 Frank G, the response of Mars' exosphere to long-term solar change is established and compared to that of Earth conditions) change only 36­50% as much as those at Earth as solar activity increases from solar minimum

  2. Helicity Thinkshop on Solar Physics October 13-15, Beijing, China

    E-Print Network [OSTI]

    Brandenburg, Axel

    Helicity Thinkshop on Solar Physics October 13-15, Beijing, China Dear Colleagues, Magnetic academic areas. This meeting would like to invite a part of solar physicists who are active. Topics to be discussed: · Observations of helicity in solar atmosphere · The helicity and solar dynamo

  3. Insignificant solar-terrestrial triggering of earthquakes Jeffrey J. Love1

    E-Print Network [OSTI]

    Thomas, Jeremy N.

    Insignificant solar-terrestrial triggering of earthquakes Jeffrey J. Love1 and Jeremy N. Thomas2 that solar-terrestrial interaction, as measured by sunspots, solar wind velocity, and geomagnetic activity by the corresponding rank of annual, monthly, and daily averages of the solar-terrestrial variables. We measure

  4. Solar surface rotation: N-S asymmetry and recent speed-up

    E-Print Network [OSTI]

    Zhang, L; Usoskin, I

    2015-01-01T23:59:59.000Z

    Context. The relation between solar surface rotation and sunspot activity still remains open. Sunspot activity has dramatically reduced in solar cycle 24 and several solar activity indices and flux measurements experienced unprecedentedly low levels during the last solar minimum. Aims. We aim to reveal the momentary variation of solar surface rotation, especially during the recent years of reducing solar activity. Methods. We used a dynamic, differentially rotating reference system to determine the best-fit annual values of the differential rotation parameters of active longitudes of solar X-ray flares and sunspots in 1977-2012. Results. The evolution of rotation of solar active longitudes obtained with X-ray flares and with sunspots is very similar. Both hemispheres speed up since the late 1990s, with the southern hemisphere rotating slightly faster than the north. Earlier, in 1980s, rotation in the northern hemisphere was considerably faster, but experienced a major decrease in the early 1990s. On the other...

  5. 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. Pittsburgh’s 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.

  6. NREL: Technology Deployment - Solar Deployment and Market Transformation

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

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

  7. CHARACTERISTICS OF SOLAR MERIDIONAL FLOWS DURING SOLAR CYCLE 23

    SciTech Connect (OSTI)

    Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Antia, H. M., E-mail: sarbani.basu@yale.ed, E-mail: antia@tifr.res.i [Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005 (India)

    2010-07-01T23:59:59.000Z

    We have analyzed available full-disk data from the Michelson Doppler Imager on board SOHO using the 'ring diagram' technique to determine the behavior of solar meridional flows over solar cycle 23 in the outer 2% of the solar radius. We find that the dominant component of meridional flows during solar maximum was much lower than that during the minima at the beginning of cycles 23 and 24. There were differences in the flow velocities even between the two minima. The meridional flows show a migrating pattern with higher-velocity flows migrating toward the equator as activity increases. Additionally, we find that the migrating pattern of the meridional flow matches those of sunspot butterfly diagram and the zonal flows in the shallow layers. A high-latitude band in meridional flow appears around 2004, well before the current activity minimum. A Legendre polynomial decomposition of the meridional flows shows that the latitudinal pattern of the flow was also different during the maximum as compared to that during the two minima. The different components of the flow have different time dependences, and the dependence is different at different depths.

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

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

    Initiative) Solar installation goal: 25 megawatts (MW) cumulative installed solar capacity in the city by 2015 The reinvigorated Solar Boston Partnership builds on the work of...

  9. 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...

  10. San Francisco, California: Solar in Action (Brochure), Solar...

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

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

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

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

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

  12. 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

  13. 2008 Solar Technologies Market Report

    E-Print Network [OSTI]

    Price, S.

    2010-01-01T23:59:59.000Z

    96 4.3.2 Customer Solar Leasefinancing, customer solar lease financing, property-assessedagreement (PPA), the solar lease, and property-assessed

  14. 2008 Solar Technologies Market Report

    E-Print Network [OSTI]

    Price, S.

    2010-01-01T23:59:59.000Z

    Commission launched the California Solar Initiative (CSI), aenergy bond California Solar Initiative concentrating solarprograms, such as the California Solar Initiative (CSI) and

  15. 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...

  16. 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.

  17. New functional polymers for sensors, smart materials and solar cells

    E-Print Network [OSTI]

    Lobez Comeras, Jose Miguel

    2012-01-01T23:59:59.000Z

    Organic polymers can be used as the active component of sensors, smart materials, chemical-delivery systems and the active layer of solar cells. The rational design and modification of the chemical structure of polymers ...

  18. State of the art in passive solar heating

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1981-01-01T23:59:59.000Z

    The state of the art is outlined according to four major categories: passive solar practice, evaluation, design air, and products and materials. Needed future research activities and joint industry/government activities are listed. (MHR)

  19. Constraints on Energy Independent Solutions of the Solar Neutrino Problem

    E-Print Network [OSTI]

    P. I. Krastev; S. T. Petcov

    1996-12-04T23:59:59.000Z

    We analyze the latest published solar neutrino data assuming an arbitrary neutrino oscillation/conversion mechanism suppresses the electron neutrino flux from the Sun independent of energy. For oscillations/transitions into active (sterile) neutrinos such mechanisms are ruled out at 99.96 (99.9997) % C.L. assuming the standard solar model by Bahcall and Pinnsoneault '95 correctly predicts all solar neutrino fluxes within their estimated uncertainties. Even if one allows for $^8{\\rm B}$ and $^7{\\rm Be}$ solar neutrino fluxes that are vastly different from the ones in contemporary standard solar models these mechanisms are strongly disfavored by the data.

  20. Solar Energy Education. Renewable energy: a background text. [Includes glossary

    SciTech Connect (OSTI)

    Not Available

    1985-01-01T23:59:59.000Z

    Some of the most common forms of renewable energy are presented in this textbook for students. The topics include solar energy, wind power hydroelectric power, biomass ocean thermal energy, and tidal and geothermal energy. The main emphasis of the text is on the sun and the solar energy that it yields. Discussions on the sun's composition and the relationship between the earth, sun and atmosphere are provided. Insolation, active and passive solar systems, and solar collectors are the subtopics included under solar energy. (BCS)

  1. Solar Resource Characterization; Session: Modeling and Analysis (Presentation)

    SciTech Connect (OSTI)

    Renne, D.

    2008-04-01T23:59:59.000Z

    This project supports the Solar America Initiative by: (1) meeting increasing demands for expertise in and products on solar radiation data and models--production and distribution of reliable, accurate domestic and international solar resource data, benchmarking and cross-comparison of solar irradiance models; and coordination with the international community (IEA/SHC Task 36, WMO); (2) reducing data uncertainties and increasing temporal and spatial data resolutions; (3) developing and testing short term solar resource forecasts; (4) evaluating methods for producing long term data sets from short term observations; and (5) conducting measurement activities at selected sites.

  2. EA-1784: Fotowatio Nevada Solar, LLC's Apex Solar Power Project...

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

    84: Fotowatio Nevada Solar, LLC's Apex Solar Power Project in Clark County, NV EA-1784: Fotowatio Nevada Solar, LLC's Apex Solar Power Project in Clark County, NV July 1, 2010...

  3. EIS-0454: Tonopah Solar Energy Crescent Dunes Solar Energy Project...

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

    EIS-0454: Tonopah Solar Energy Crescent Dunes Solar Energy Project in Nye County, NV EIS-0454: Tonopah Solar Energy Crescent Dunes Solar Energy Project in Nye County, NV Documents...

  4. Solar-collector test report

    SciTech Connect (OSTI)

    Stoney, W. E. [comp.] [comp.

    1981-06-01T23:59:59.000Z

    Activities to evaluate the commercial readiness and potential of an all plastic solar hot water collector are summarized. The results of tests at the Florida Solar Energy Center are reported. The collector is described and data are given including the efficiency curve, incident angle modifier, raw test data, and the results of static tests. A meeting is also described which was called to obtain an outside evaluation of the collector and recommendations as to future activities. It was agreed that the design demonstrated that a thin-film plastic absorber could be built to produce performance at least equal to the mid-range of conventional copper or aluminum absorbers and that production costs could probably be at least half that of currently available collectors. (LEW)

  5. Capturing the Sun, Creating a Clean Energy Future (Brochure), SunShot, Solar Energy Technologies Program (SETP), U.S. Department of Energy (DOE)

    Broader source: Energy.gov [DOE]

    Through partnerships with industry academia, and national laboratories, the DOE Solar Energy Technologies Program sponsors research and development (R&D) in addition to activities designed to accelerate solar market development and reduce the cost of solar power.

  6. Abstract--The behavior of Solar Photo-Voltaic Generation (SPVG) in the grid is defined by the way its output active and

    E-Print Network [OSTI]

    Cañizares, Claudio A.

    its output active and reactive power are controlled; the reactive power can be controlled directly). Therefore, two basic modeling approaches are considered in the present work: constant reactive power of electricity. The Ontario Power Authority (OPA), as per the Green Energy Act [1], considers renewable energy

  7. Solar desiccant cooling: an evolving technology

    SciTech Connect (OSTI)

    Haas, S.A.

    1982-06-01T23:59:59.000Z

    The potential for improved solar cooling economics has not been realized. The absorption cycle, and heat activated Rankine engine suffer from low efficiency. Desiccant cooling is simple and can acheive a Coefficient of Performance (COP) double that of the other systems. The basic desiccant system technology is described. This has been integrated with solar collecter regeneration to demonstrate feasibility. A performance analysis shows that desiccant cooling can be competitive, but that the capital cost penalty of solar-desiccant systems was the most serious detriment to economic competitiveness. Tax incentives are recommended.

  8. Thermal metastabilities in the solar core

    E-Print Network [OSTI]

    Attila Grandpierre; Gabor Agoston

    2002-01-18T23:59:59.000Z

    Linear stability analysis indicates that solar core is thermally stable for infinitesimal internal perturbations. For the first time, thermal metastabilities are found in the solar core when outer perturbations with significant amplitude are present. The obtained results show that hot bubbles generated by outer perturbations may travel a significant distance in the body of the Sun. These deep-origin hot bubbles have mass, energy, and chemical composition that may be related to solar flares. The results obtained may have remarkable relations to activity cycles in planets like Jupiter and also in extrasolar planetary systems.

  9. Solar Phys (2014) 289:47014709 DOI 10.1007/s11207-014-0587-6

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    Solar Phys (2014) 289:4701­4709 DOI 10.1007/s11207-014-0587-6 Cosmogenic Isotope Variability During Be during the Maunder Minimum is comparable to that during the recent epoch of high solar activity. Because contradicts an intuitive expectation that lower activity would result in smaller solar-cycle variations

  10. Solar Phys (2014) 289:23332342 DOI 10.1007/s11207-014-0475-0

    E-Print Network [OSTI]

    Usoskin, Ilya G.

    Solar Phys (2014) 289:2333­2342 DOI 10.1007/s11207-014-0475-0 Critical Analysis of a Hypothesis of the Planetary Tidal Influence on Solar Activity S. Poluianov · I. Usoskin Received: 25 June 2013 / Accepted: 4 The present work is a critical revision of the hypothesis of the planetary tidal influence on solar activity

  11. Solar Energy Education. Home economics: teacher's guide. Field test edition. [Includes glossary

    SciTech Connect (OSTI)

    Not Available

    1981-06-01T23:59:59.000Z

    An instructional aid is provided for home economics teachers who wish to integrate the subject of solar energy into their classroom activities. This teacher's guide was produced along with the student activities book for home economics by the US Department of Energy Solar Energy Education. A glossary of solar energy terms is included. (BCS)

  12. Effects of Solar Radio Bursts on Wireless Systems Dale E. Gary1

    E-Print Network [OSTI]

    emissions from the sun were first reported by Southworth (1945). Radio bursts at the time of solar activity of intense solar activity (on 28 February 1942) that produced the first-ever measured ground level1 Chapter Effects of Solar Radio Bursts on Wireless Systems Dale E. Gary1 , Louis J. Lanzerotti1

  13. Solar Power for Tanzania

    SciTech Connect (OSTI)

    Chen, Christine; Gerace, Jay; Mehner, Nicole; Mohamed, Sharif; Reiss, Kelly

    1999-12-06T23:59:59.000Z

    Condensed list of products and activities: 8 educational posters and 1 informational brochure (all original illustrations and text); a business plan with micro-agreements; corporation created called Tanzanian Power, LLC; business feasibility study developed with the University of Albany; Hampshire College collaborated in project development; research conducted seeking similar projects in underdeveloped countries; Citibank proposal submitted (but rejected); cleaned and sent PV panels to Tanzania; community center built in Tanzania; research and list provided to Robinson for educational TV videos and product catalogs; networked with Chase Manhattan Bank for new solar panels; maintained flow of information among many people (stateside and Tanzania); wrote and sent press releases and other outreach information. Several families purchased panels.

  14. Sandia National Laboratories: solar forecasting

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational Solar Thermal Test Facility

  15. Sandia National Laboratories: 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational Solar Thermal Test Facilitysolar

  16. Sandia National Laboratories: solar thermal

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1developmentturbineredox-activeNational Solar Thermal Test Facilitysolarsolar

  17. 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

  18. 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

  19. 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 César Clavero Plasma

  20. 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

  1. 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.

  2. Solar | Department of Energy

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

    a solar energy system on a Habitat for Humanity home. GRID installed solar electric systems on 10 affordable homes developed by Habitat for Humanity in the Ivy City neighborhood...

  3. 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...

  4. 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...

  5. 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

  6. 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....

  7. Solar Contractor Licensing

    Broader source: Energy.gov [DOE]

    Until 1994, Florida offered limited specialty licenses for residential solar hot water and pool heating, as well a general solar contractor's license. These specialty licenses have not been issued...

  8. Solar Contractor Licensing

    Broader source: Energy.gov [DOE]

    The Arizona Registrar of Contractors does not offer a general solar electric contractor license, but the state's C-11/L-11 electrical license covers solar electric installations. C-11 licenses are...

  9. 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...

  10. CALIFORNIA SOLAR DATA MANUAL

    E-Print Network [OSTI]

    Berdahl, P.

    2010-01-01T23:59:59.000Z

    SOLA DATA MANUAL Jan Paul Berdahl, Donald Grether, Marlo Martin, and Michael Wahlig ronment Division Solar Energy

  11. Low-cost selective deposition of wax onto textured solar cells

    E-Print Network [OSTI]

    Páez, Daýan

    2008-01-01T23:59:59.000Z

    The active regions of a solar cell must be inoculated with wax, while leaving the metal fingers and bus bars bare, in preparation for the electroplating step of a new solar panel manufacturing process. Different methods ...

  12. 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

  13. 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.

  14. 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.

  15. Standard Solar Model

    SciTech Connect (OSTI)

    Loong, Lim Yaw; Yusof, Norhasliza; Kassim, Hasan Abu [Physics Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia)

    2008-05-20T23:59:59.000Z

    Solar models are important in our understanding of stars and stellar evolution. Solar models have been constructed using different methods. In this work, a solar model will be built using the fitting method. The model will incorporate the most recent input data. The model will be evolved to the current epoch starting from the zero-age main sequence model.

  16. Solar Policy Environment: Milwaukee

    Broader source: Energy.gov [DOE]

    The City of Milwaukee’s 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.

  17. Digital Solar Explorer Introduction

    E-Print Network [OSTI]

    Zanibbi, Richard

    Digital Solar Explorer Introduction Description Content Design Physical Interaction An element of interactivity is added to the Digital Solar Explorer exhibit through the use of a controller. Simple, intuitive the learning process, which is the number one goal of the Digital Solar Explorer exhibit. Essentially, the user

  18. 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.

  19. 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

  20. 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.