Sample records for heat photovoltaics solar

  1. Effects of solar photovoltaic panels on roof heat transfer

    E-Print Network [OSTI]

    Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C

    2011-01-01T23:59:59.000Z

    the energy performance of  photovoltaic roofs, ASHRAE Trans A thermal model for photovoltaic systems, Solar Energy, Effects of Solar Photovoltaic Panels on Roof Heat Transfer 

  2. Photovoltaic roof heat flux

    E-Print Network [OSTI]

    Samady, Mezhgan Frishta

    2011-01-01T23:59:59.000Z

    designs (relatively) Photovoltaic Solar P a n e l AtmosphereCALIFORNIA, SAN DIEGO Photovoltaic Roof Heat Flux A ThesisABSTRACT OF T H E THESIS Photovoltaic Roof Heat Flux by

  3. Modeling of Performance, Cost, and Financing of Concentrating Solar, Photovoltaic, and Solar Heat Systems (Poster)

    SciTech Connect (OSTI)

    Blair, N.; Mehos, M.; Christiansen, C.

    2006-10-03T23:59:59.000Z

    This poster, submitted for the CU Energy Initiative/NREL Symposium on October 3, 2006 in Boulder, Colorado, discusses the modeling, performance, cost, and financing of concentrating solar, photovoltaic, and solar heat systems.

  4. Effects of solar photovoltaic panels on roof heat transfer

    E-Print Network [OSTI]

    Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C

    2011-01-01T23:59:59.000Z

    Itron Inc. , CPUC California Solar Initiative 2009 Impact hot  days found by the California Solar Initiative impact solar photovoltaic (PV) panels were conducted in  San Diego, California.  

  5. Experimental investigation on the photovoltaic-thermal solar heat pump air-conditioning system on water-heating mode

    SciTech Connect (OSTI)

    Fang, Guiyin; Hu, Hainan; Liu, Xu [Department of Physics, Nanjing University, Nanjing 210093 (China)

    2010-09-15T23:59:59.000Z

    An experimental study on operation performance of photovoltaic-thermal solar heat pump air-conditioning system was conducted in this paper. The experimental system of photovoltaic-thermal solar heat pump air-conditioning system was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-conditioning system, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic-thermal (PV/T) solar heat pump air-conditioning system reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-conditioning system may attain 2.88 and the water temperature in water heater can increase to 42 C. These results indicate that the photovoltaic-thermal solar heat pump air-conditioning system has better performances and can stably work. (author)

  6. Effects of solar photovoltaic panels on roof heat transfer

    E-Print Network [OSTI]

    Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C

    2011-01-01T23:59:59.000Z

    the underside of the tilted solar panels and the surface of the roof under the solar panel (Fig.  2).  An air temperature of the  solar panel is similar to the roof 

  7. Renewable Energy Ready Home Solar Photovoltaic Specifications...

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

    Renewable Energy Ready Home Solar Photovoltaic Specifications Renewable Energy Ready Home Solar Photovoltaic Specifications Solar Photovoltaic Specification, Checklist and Guide,...

  8. Review of combined photovoltaic/thermal collector: solar assisted heat pump system options

    SciTech Connect (OSTI)

    Sheldon, D.B.; Russell, M.C.

    1980-01-01T23:59:59.000Z

    The advantages of using photovoltaic (PV) and combined photovoltaic/thermal (PV/T) collectors in conjunction with residential heat pumps are examined. The thermal and electrical power requirements of similar residences in New York City and Fort Worth are the loads under consideration. The TRNSYS energy balance program is used to simulate the operations of parallel, series, and cascade solar assisted heat pump systems. Similar work involving exclusively thermal collectors is reviewed, and the distinctions between thermal and PV/T systems are emphasized. Provided the defrost problem can be satisfactorily controlled, lifecycle cost analyses show that at both locations the optimum collector area is less than 50 m/sup 2/ and that the parallel system is preferred.

  9. Photovoltaic solar cell

    DOE Patents [OSTI]

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

    2013-11-26T23:59:59.000Z

    A photovoltaic solar cell for generating electricity from sunlight is disclosed. The photovoltaic solar cell comprises a plurality of spaced-apart point contact junctions formed in a semiconductor body to receive the sunlight and generate the electicity therefrom, the plurality of spaced-apart point contact junctions having a first plurality of regions having a first doping type and a second plurality of regions having a second doping type. In addition, the photovoltaic solar cell comprises a first electrical contact electrically connected to each of the first plurality of regions and a second electrical contact electrically connected to each of the second plurality of regions, as well as a passivation layer covering major surfaces and sidewalls of the photovoltaic solar cell.

  10. Photovoltaic solar cell

    DOE Patents [OSTI]

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

    2014-05-20T23:59:59.000Z

    A photovoltaic solar cell for generating electricity from sunlight is disclosed. The photovoltaic solar cell comprises a plurality of spaced-apart point contact junctions formed in a semiconductor body to receive the sunlight and generate the electricity therefrom, the plurality of spaced-apart point contact junctions having a first plurality of regions having a first doping type and a second plurality of regions having a second doping type. In addition, the photovoltaic solar cell comprises a first electrical contact electrically connected to each of the first plurality of regions and a second electrical contact electrically connected to each of the second plurality of regions, as well as a passivation layer covering major surfaces and sidewalls of the photovoltaic solar cell.

  11. Photovoltaic roof heat flux

    E-Print Network [OSTI]

    Samady, Mezhgan Frishta

    2011-01-01T23:59:59.000Z

    under the offset unit's solar panel, the hf formula (16) wasdrop below the angle unit's solar panel at night time. D u rfor both the units, the solar panel covered roof was a heat

  12. Planar photovoltaic solar concentrator module

    DOE Patents [OSTI]

    Chiang, C.J.

    1992-12-01T23:59:59.000Z

    A planar photovoltaic concentrator module for producing an electrical signal from incident solar radiation includes an electrically insulating housing having a front wall, an opposing back wall and a hollow interior. A solar cell having electrical terminals is positioned within the interior of the housing. A planar conductor is connected with a terminal of the solar cell of the same polarity. A lens forming the front wall of the housing is operable to direct solar radiation incident to the lens into the interior of the housing. A refractive optical element in contact with the solar cell and facing the lens receives the solar radiation directed into the interior of the housing by the lens and directs the solar radiation to the solar cell to cause the solar cell to generate an electrical signal. An electrically conductive planar member is positioned in the housing to rest on the housing back wall in supporting relation with the solar cell terminal of opposite polarity. The planar member is operable to dissipate heat radiated by the solar cell as the solar cell generates an electrical signal and further forms a solar cell conductor connected with the solar cell terminal to permit the electrical signal generated by the solar cell to be measured between the planar member and the conductor. 5 figs.

  13. Planar photovoltaic solar concentrator module

    DOE Patents [OSTI]

    Chiang, Clement J. (New Brunswick, NJ)

    1992-01-01T23:59:59.000Z

    A planar photovoltaic concentrator module for producing an electrical signal from incident solar radiation includes an electrically insulating housing having a front wall, an opposing back wall and a hollow interior. A solar cell having electrical terminals is positioned within the interior of the housing. A planar conductor is connected with a terminal of the solar cell of the same polarity. A lens forming the front wall of the housing is operable to direct solar radiation incident to the lens into the interior of the housing. A refractive optical element in contact with the solar cell and facing the lens receives the solar radiation directed into the interior of the housing by the lens and directs the solar radiation to the solar cell to cause the solar cell to generate an electrical signal. An electrically conductive planar member is positioned in the housing to rest on the housing back wall in supporting relation with the solar cell terminal of opposite polarity. The planar member is operable to dissipate heat radiated by the solar cell as the solar cell generates an electrical signal and further forms a solar cell conductor connected with the solar cell terminal to permit the electrical signal generated by the solar cell to be measured between the planar member and the conductor.

  14. Photovoltaic solar concentrator

    DOE Patents [OSTI]

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

    2012-12-11T23:59:59.000Z

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

  15. Concentrating photovoltaic solar panel

    DOE Patents [OSTI]

    Cashion, Steven A; Bowser, Michael R; Farrelly, Mark B; Hines, Braden E; Holmes, Howard C; Johnson, Jr., Richard L; Russell, Richard J; Turk, Michael F

    2014-04-15T23:59:59.000Z

    The present invention relates to photovoltaic power systems, photovoltaic concentrator modules, and related methods. In particular, the present invention features concentrator modules having interior points of attachment for an articulating mechanism and/or an articulating mechanism that has a unique arrangement of chassis members so as to isolate bending, etc. from being transferred among the chassis members. The present invention also features adjustable solar panel mounting features and/or mounting features with two or more degrees of freedom. The present invention also features a mechanical fastener for secondary optics in a concentrator module.

  16. Monitoring SERC Technologies — Solar Photovoltaics

    Broader source: Energy.gov [DOE]

    A webinar by National Renewable Energy Laboratory's Market Transformation Center electrical engineer Peter McNutt about Solar Photovoltaics and how to properly monitor its installation.

  17. Hybrid Photovoltaic/Thermal Systems with a Solar-Assisted Heat Pump

    SciTech Connect (OSTI)

    Kush, E.A.

    1980-01-01T23:59:59.000Z

    An outline of possibilities for effective use of PV/T collectors with a Solar Assisted Heat Pump is given. A quantitative analysis of the performance and cost of the various configurations as a function of regional climates, using up-to-date results from solar heat pump and PV/T collector studies, will be required for more definitive assessment; and it is recommended that these be undertaken in the PV/T Program. Particular attention should be paid to development of high performance PV/T collectors, matching of heat pump electrical system to PV array and power conditioning characteristics, and optimization of storage options for cost effectiveness and utility impact.

  18. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    Production of Solar Photovoltaic Cells”, Center for theconcerns is solar photovoltaic cells (PVs), which captureProduction of Solar Photovoltaic Cells Solar PV cells

  19. Analysis of the Potential Applications of Solar Termal and Photovoltaic Systems for Northwest Vista College

    E-Print Network [OSTI]

    Ugursal, A.; Martinez, J.; Baltazar, J. C.; Zilbershtein, G.

    2013-01-01T23:59:59.000Z

    the following RE technologies as viable: ground source heat pump (GSHP) systems, closed loop solar thermal system and photovoltaic (PV)....

  20. Photon management in thermal and solar photovoltaics

    E-Print Network [OSTI]

    Hu, Lu

    2008-01-01T23:59:59.000Z

    Photovoltaics is a technology that directly converts photon energy into electrical energy. Depending on the photon source, photovoltaic systems can be categorized into two groups: solar photovoltaics (PV) and thermophotovoltaics ...

  1. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    Investigation of Photovoltaic Cost Trends in California,”The Market Value and Cost of Solar Photovoltaic ElectricityThe Market Value and Cost of Solar Photovoltaic Electricity

  2. Photovoltaic roof heat flux

    E-Print Network [OSTI]

    Samady, Mezhgan Frishta

    2011-01-01T23:59:59.000Z

    t y (2009). 11. Pacific Gas &Electric, Go Solar California:California Solar Initiative (2008). A consumer's guide toprograms such as the California Solar Initiative (CSI) to

  3. The Solar Photovoltaics Technology Conflict between

    E-Print Network [OSTI]

    Deutch, John

    A Duel in the Sun The Solar Photovoltaics Technology Conflict between China and the United States A Duel in the Sun The Solar Photovoltaics Technology Conflict between China and the United States1 John domestically, and selling interna- tionally solar photovoltaic (PV) electricity- generating technology. Over

  4. Chapter 9: Photovoltaic DevicesChapter 9: Photovoltaic Devices Solar energy spectrumSolar energy spectrum

    E-Print Network [OSTI]

    Wang, Jianfang

    Chapter 9: Photovoltaic DevicesChapter 9: Photovoltaic Devices Solar energy spectrumSolar energy Solar Energy? · Clean · Nearly unlimited PHYS5320 Chapter Nine 3 #12;S l ll l t PHYS5320 Chapter Nine 4 Solar cell plant #12;Cars powered by photovoltaic devices PHYS5320 Chapter Nine 5 #12;Solar Energy

  5. Agua Caliente, World's Largest Solar Photovoltaic Plant, Helps...

    Office of Environmental Management (EM)

    Agua Caliente, World's Largest Solar Photovoltaic Plant, Helps Advance America's Solar Leadership Agua Caliente, World's Largest Solar Photovoltaic Plant, Helps Advance America's...

  6. EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques

    E-Print Network [OSTI]

    Kaiser, Todd J.

    ;3 Screen Printed Solar Cells · Firing the contacts ­ The furnace heats the cell to a high temperature by Efficiency 22 Rear Panel before Lamination 23 Buried Contact Solar Cells · High Efficiency · Laser groved1 EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques Dr. Todd J. Kaiser

  7. Photovoltaic roof heat flux

    E-Print Network [OSTI]

    Samady, Mezhgan Frishta

    2011-01-01T23:59:59.000Z

    d b y t h e a n g l e d solar panel F i g u r e 62: C a l cK l e i s s l , C h a i r Solar panels were mounted w i t hthe optimal angles for solar panels [9], i n this study both

  8. Soiling losses for solar photovoltaic systems in California

    E-Print Network [OSTI]

    Mejia, Felipe A; Kleissl, Jan

    2013-01-01T23:59:59.000Z

    on Large Grid-Connected Photovoltaic Systems in Californiaof Dust on Solar Photovoltaic (PV) Performance: Researchclimatology in design of photovoltaic systems. In: Markvart

  9. Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies

    E-Print Network [OSTI]

    Wang, Chunhua

    2011-01-01T23:59:59.000Z

    and V.U. Ho?mann. Photovoltaic Solar Energy Gen- eration.Concentrations for Photovoltaic Technologies A dissertationThirteenth IEEE Photovoltaic Specialists Conference- 1978—

  10. Low-Cost Photovoltaics: Luminescent Solar Concentrators And Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01T23:59:59.000Z

    Photovoltaic Solar Energy Conference and Exhibition, Barcelona, Spain,Photovoltaic Solar Energy Conference and Exhibition, Valencia, Spain,

  11. Solar Photovoltaics development -Status and perspectives

    E-Print Network [OSTI]

    Solar Photovoltaics development - Status and perspectives Jørgen Fenhann Risø National Laboratory for the development of solar photovoltaics, contributing to the Macro Task E1 on production cost for fusion.S. with 53 MWp followed by Japan and EU. Until now off-grid installation have dominated the solar PV market

  12. Recording of SERC Monitoring Technologies- Solar Photovoltaics

    Broader source: Energy.gov [DOE]

    This document provides a transcript of the of SERC Monitoring Technologies - Solar Photovoltaics webinar, presented on 10/20/2011 by Peter McNutt.

  13. Solar Photovoltaic Financing: Deployment on Public Property by...

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

    Solar Photovoltaic Financing: Deployment on Public Property by State and Local Governments Solar Photovoltaic Financing: Deployment on Public Property by State and Local...

  14. Photovoltaic nanocrystal scintillators hybridized on Si solar cells

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Photovoltaic nanocrystal scintillators hybridized on Si solar cells for enhanced conversion@bilkent.edu.tr Abstract: We propose and demonstrate semiconductor nanocrystal based photovoltaic scintillators integrated on solar cells to enhance photovoltaic device parameters including spectral responsivity, open circuit

  15. Solar photovoltaic residence in Carlisle, Massachusetts

    SciTech Connect (OSTI)

    Strong, S. J.; Nichols, B. E.

    1981-01-01T23:59:59.000Z

    The first solar photovoltaic house designed and constructed under the US Department of Energy's Solar Photovoltaic Residential Project has been completed. The house, which is powered by a 7-kWp PV system, will be used to assess the occupants' acceptance of and reactions to residential photovoltaic systems and to familiarize utilities, builders, developers, town building officials and others with issues concerning photovoltaic installations. The house is located on a two-acre lot in Carlisle, approximately twenty miles northwest of Boston. Built by a local architect/developer team, the house includes energy conservation and passive solar features. It utilizes a roof-mounted, flat-plate PV array which operates in a two-way energy exchange mode with the electric utility. The energy conservation and passive solar features of this house are described and a detailed description of the utility-interactive photovoltaic system is presented, along with initial performance data.

  16. Sandia National Laboratories: Sandia and EMCORE: Solar Photovoltaics...

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

    ClimateECEnergyRenewable EnergySolarConcentrating Solar PowerSandia and EMCORE: Solar Photovoltaics, Fiber Optics, MODE, and Energy Efficiency Sandia and EMCORE: Solar...

  17. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    Shannon Moynahan, “The California Solar Initiative — TriumphRates Undermine California’s Solar Photovoltaic Subsidies? ”to the fact that solar PV in California has not been focused

  18. Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies

    E-Print Network [OSTI]

    Wang, Chunhua

    2011-01-01T23:59:59.000Z

    and V.U. Ho?mann. Photovoltaic Solar Energy Gen- eration.stacked LSC plates for photovoltaics with the green LSC onsolar concentra- tors for photovoltaics. Science, 321(5886):

  19. Development of a Web-based Emissions Reduction Calculator for Solar Thermal and Solar Photovoltaic Installations

    E-Print Network [OSTI]

    Baltazar-Cervantes, J. C.; Gilman, D.; Haberl, J. S.; Culp, C.

    2005-01-01T23:59:59.000Z

    by the University of Wisconsin, which is used to select and analyze solar thermal systems. The program provides monthly- average performance for selected system, including: domestic water heating systems, space heating systems, pool heating systems and others... savings from photovoltaic systems using the PV F-CHART program, and a second procedure that uses the F-CHART program to calculate the thermal savings. The solar systems are simulated as specified for the user, no optimization or modification...

  20. Nanoscience and Nanostructures for Photovoltaics and Solar Fuels

    E-Print Network [OSTI]

    Wu, Zhigang

    Nanoscience and Nanostructures for Photovoltaics and Solar Fuels Arthur J. Nozik National Renewable to enhance the power conversion efficiency of solar cells for photovoltaic and solar fuels production of the technological status of nanocrystals and nanostructures for third generation photovoltaic cells and solar fuels

  1. Solar photovoltaics for development applications

    SciTech Connect (OSTI)

    Shepperd, L.W. [Florida Solar Energy Center, Cape Canaveral, FL (United States)] [Florida Solar Energy Center, Cape Canaveral, FL (United States); Richards, E.H. [Sandia National Labs., Albuquerque, NM (United States)] [Sandia National Labs., Albuquerque, NM (United States)

    1993-08-01T23:59:59.000Z

    This document introduces photovoltaic technology to individuals and groups specializing in development activities. Examples of actual installations illustrate the many services supplied by photovoltaic systems in development applications, including water pumping, lighting, health care, refrigeration, communications, and a variety of productive uses. The various aspects of the technology are explored to help potential users evaluate whether photovoltaics can assist them in achieving their organizational goals. Basic system design, financing techniques, and the importance of infrastructure are included, along with additional sources of information and major US photovoltaic system suppliers.

  2. Solar energy storage through the homogeneous electrocatalytic reduction of carbon dioxide : photoelectrochemical and photovoltaic approaches

    E-Print Network [OSTI]

    Sathrum, Aaron John

    2011-01-01T23:59:59.000Z

    electricity from photovoltaic cells to convert CO 2 intoSolar Energy Anode Photovoltaic Cell Cathode PP Mesh SpacerCoupling a Photovoltaic Solar Cell with a Homogeneous

  3. Valuing the Time-Varying Electricity Production of Solar Photovoltaic Cells

    E-Print Network [OSTI]

    Borenstein, Severin

    2005-01-01T23:59:59.000Z

    Production of Solar Photovoltaic Cells Severin BorensteinProduction of Solar Photovoltaic Cells Severin Borenstein 1concerns is so- lar photovoltaic cells (PVs), which capture

  4. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    Solar Photovoltaic Cells”, Center for the Study of Energy Markets Working Paper WP-142, UniversitySolar Photovoltaic Subsidies? ” Center for the Study of Energy Markets Working Paper #172, Universitysolar PV today positive. Director, University of California Energy

  5. Peer Effects in the Diffusion of Solar Photovoltaic Panels

    E-Print Network [OSTI]

    Lee, Daeyeol

    Peer Effects in the Diffusion of Solar Photovoltaic Panels Bryan Bollinger NYU Stern School base of consumers in the reference group. We study the diffusion of solar photovoltaic panels of an environmentally beneficial technology, solar photovoltaic (PV) panels. Policymakers are particularly interested

  6. 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)

  7. Use of photovoltaics for waste heat recovery

    DOE Patents [OSTI]

    Polcyn, Adam D

    2013-04-16T23:59:59.000Z

    A device for recovering waste heat in the form of radiated light, e.g. red visible light and/or infrared light includes a housing having a viewing window, and a photovoltaic cell mounted in the housing in a relationship to the viewing window, wherein rays of radiated light pass through the viewing window and impinge on surface of the photovoltaic cell. The housing and/or the cell are cooled so that the device can be used with a furnace for an industrial process, e.g. mounting the device with a view of the interior of the heating chamber of a glass making furnace. In this manner, the rays of the radiated light generated during the melting of glass batch materials in the heating chamber pass through the viewing window and impinge on the surface of the photovoltaic cells to generate electric current which is passed onto an electric load.

  8. 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...

  9. Outlier Detection Rules for Fault Detection in Solar Photovoltaic Arrays

    E-Print Network [OSTI]

    Lehman, Brad

    Abstract-- Solar photovoltaic (PV) arrays are unique power sources that may have uncleared fault current of solar photovoltaic (PV) systems. Different from traditional power sources, solar PV array is unique devices (OCPD). This may be caused by non-linear output characteristics of solar PV arrays, low irradiance

  10. Siting Solar Photovoltaics at Airports: Preprint

    SciTech Connect (OSTI)

    Kandt, A.; Romero, R.

    2014-06-01T23:59:59.000Z

    Airports present a significant opportunity for hosting solar technologies due to their open land; based on a 2010 Federal Aviation Administration study, the US Department of Agriculture, and the US Fish and Wildlife Service, there's potential for 116,704 MW of solar photovoltaics (PV) on idle lands at US airports. PV has a low profile and likely low to no impact on flight operations. This paper outlines guidance for implementing solar technologies at airports and airfields, focusing largely on the Federal Aviation Administration's policies. The paper also details best practices for siting solar at airports, provides information on the Solar Glare Hazard Analysis Tool, and highlights a case study example where solar has been installed at an airport.

  11. Letting The Sun Shine On Solar Costs: An Empirical Investigation Of Photovoltaic Cost Trends In California

    E-Print Network [OSTI]

    Wiser, Ryan; Bolinger, Mark; Cappers, Peter; Margolis, Robert

    2006-01-01T23:59:59.000Z

    INVESTIGATION OF PHOTOVOLTAIC COST TRENDS IN CALIFORNIA RyanInvestigation of Photovoltaic Cost Trends in California”,cost of customer-sited, grid-connected solar photovoltaic (

  12. Solar Photovoltaic Technologies - Energy Innovation Portal

    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 ofSolarSolar FuelsPhotovoltaic

  13. High-Performance Home Technologies: Solar Thermal & Photovoltaic...

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

    in each of the volumes. High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems More Documents & Publications Building America Whole-House Solutions for...

  14. Sustainable Energy Resources for Consumers (SERC)- Solar Photovoltaics

    Broader source: Energy.gov [DOE]

    This presentation, aimed at Sustainable Energy Resources for Consumers (SERC) grantees, provides information on Monitoring Checklists for the installation of Solar Photovoltaics.

  15. Photovoltaic Measurements in Single-Nanowire Silicon Solar Cells

    E-Print Network [OSTI]

    Atwater, Harry

    Photovoltaic Measurements in Single-Nanowire Silicon Solar Cells Michael D. Kelzenberg, Daniel B-voltage measurements were made under simulated Air Mass 1.5 global illumination. Photovoltaic spectral response work by our group has shown that macroscopic Si wire arrays (>1 cm2 in area) suitable for photovoltaic

  16. SOLAR RADIATION DURABILITY OF MATERIALS, COMPONENTS AND SYSTEMS FOR PHOTOVOLTAICS

    E-Print Network [OSTI]

    Rollins, Andrew M.

    SOLAR RADIATION DURABILITY OF MATERIALS, COMPONENTS AND SYSTEMS FOR PHOTOVOLTAICS Myles P. Murray 1 exposed photovoltaic materials, is defined as the rate of photodarkening or photobleaching of a material testing. The potential to predict power losses in a photovoltaic system over time caused

  17. Solar Heating in Uppsala.

    E-Print Network [OSTI]

    Blomqvist, Emelie; Häger, Klara

    2012-01-01T23:59:59.000Z

    ?? The housing corporation Uppsalahem has installed asolar heating system in the neighbourhood Haubitsen,which was renovated in 2011. This report examineshow much energy the solar… (more)

  18. Passive solar space heating

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1980-01-01T23:59:59.000Z

    An overview of passive solar space heating is presented indicating trends in design, new developments, performance measures, analytical design aids, and monitored building results.

  19. The Falling Price of Utility-Scale Solar Photovoltaic (PV) Projects...

    Office of Environmental Management (EM)

    Solar Photovoltaic (PV) Projects The Falling Price of Utility-Scale Solar Photovoltaic (PV) Projects Data courtesy of National Renewable Energy Lab. Chart by Daniel Wood. View...

  20. 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)

  1. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    high cost of power from solar photovoltaic (PV) panels hassolar panels can be more closely synchronized with system demand, but at a costcost of the solar PV installation is equivalent to purchasing each MWh over the life of the panels

  2. Oncor Electric Delivery- Solar Photovoltaic Standard Offer Program

    Broader source: Energy.gov [DOE]

    The 2013 Oncor Solar Photovoltaic Standard Offer Program Guidelines are now [https://www.oncoreepm.com/SolarPV.aspx available]. The application period for both the residential and non-residential...

  3. Seeing solar on campus : a visible photovoltaic installation on campus

    E-Print Network [OSTI]

    Guarda, Daniel Jair Alves

    2006-01-01T23:59:59.000Z

    This paper presents a methodology for selecting a site on the MIT campus for a visible solar photovoltaic installation. Visibility, solar exposure, advertising potential, aesthetics, interactivity and direct or important ...

  4. Life Cycle Greenhouse Gas Emissions from Solar Photovoltaics

    E-Print Network [OSTI]

    Life Cycle Greenhouse Gas Emissions from Solar Photovoltaics Over the last thirty years, hundreds and utility-scale solar photovoltaic (PV) systems. These LCAs have yielded wide-ranging results. Variation of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. ~40 g CO2

  5. Solar Photovoltaic Capacity F t P f d P li

    E-Print Network [OSTI]

    6/19/2013 1 Solar Photovoltaic ­ Capacity F t P f d P li Generating Resources Advisory Committee Advisor Model (SAM), version 2013.1.15 Technology: Solar PV (PVWatts system model)Technology: Solar PV (MWh) (First year output, each year thereafter degrades 0.5%) 6 #12;6/19/2013 4 Shape of PNW Solar PV

  6. 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

  7. Solar heat receiver

    DOE Patents [OSTI]

    Hunt, A.J.; Hansen, L.J.; Evans, D.B.

    1982-09-29T23:59:59.000Z

    A receiver is described for converting solar energy to heat a gas to temperatures from 700 to 900/sup 0/C. The receiver is formed to minimize impingement of radiation on the walls and to provide maximum heating at and near the entry of the gas exit. Also, the receiver is formed to provide controlled movement of the gas to be heated to minimize wall temperatures. The receiver is designed for use with gas containing fine heat absorbing particles, such as carbon particles.

  8. Passive solar heating analysis

    SciTech Connect (OSTI)

    Balcomb, J.D.; Jones, R.W.; Mc Farland, R.D.; Wray, W.O.

    1984-01-01T23:59:59.000Z

    This book discusses about the design of solar heating systems. The terms and symbols are clearly defined. Step-by-step procedures are indicated. Worked examples are given with tables, graphs, appendixes.

  9. Photovoltaics

    Broader source: Energy.gov [DOE]

    The SunShot Initiative aggressively supports development of low-cost, high-efficiency photovoltaic (PV) technologies in order to to make solar electricity cost-competitive with other sources of energy by 2020.

  10. Fast Photovoltaic Array Reconfiguration for Partial Solar Powered Vehicles

    E-Print Network [OSTI]

    Pedram, Massoud

    Fast Photovoltaic Array Reconfiguration for Partial Solar Powered Vehicles Jaemin Kim1 , Yanzhi during cruising using innovative fast photovoltaic array (PV) reconfiguration. Use of all the vehicle sur and partial PV array mounting by the car owner's driving pattern, which results in more than 20% PV cell cost

  11. Expedited Permitting Process for Solar Photovoltaic Systems (Vermont)

    Broader source: Energy.gov [DOE]

    Vermont has established an expedited permitting process for solar photovoltaic systems that are 10 kilowatts-AC (kW) or less. In order to interconnect and net meter, electric customers in Vermont...

  12. Presented at the 16th European Photovoltaic Solar Energy Conference

    E-Print Network [OSTI]

    Sites, James R.

    Presented at the 16th European Photovoltaic Solar Energy Conference Glasgow, May 2000 HIGH RESOLUTION LASER STEPPING MEASUREMENTS ON POLYCRYSTALLINE SOLAR CELLS J. F. Hiltner and J. R. Sites Colorado conveniently and non- destructively by focusing a laser beam on the surface of the solar cell and measuring

  13. ECE 414A/514A Photovoltaic Solar Energy Systems

    E-Print Network [OSTI]

    Arizona, University of

    ECE 414A/514A Photovoltaic Solar Energy Systems Instructor: Prof. Raymond K. Kostuk Time: MWF 04, the characteristics of solar illumination, and the advantages and characteristics of concentrating and light kostuk@ece.arizona.edu Class webpage: ece.Arizona.edu/~ece414a Abstract: The solar illumination reaching

  14. A survey of thin-film solar photovoltaic industry & technologies

    E-Print Network [OSTI]

    Grama, Sorin

    2007-01-01T23:59:59.000Z

    A new type of solar cell technology using so-called thin-film solar photovoltaic material has the potential to make a great impact on our lives. Because it uses very little or no silicon at all, thin- film (TF) solar ...

  15. Renewable Energies III Photovoltaics, Solar & Geo-Thermal

    E-Print Network [OSTI]

    Renewable Energies III Photovoltaics, Solar & Geo-Thermal 21st August - 2nd September 2011 on the principles of solar energy conversion. Theoretical knowledge will be complemented with practical workshops of solar energy conversion. Theoretical knowledge will be comple- mented with practical workshops

  16. Electronic copy available at: http://ssrn.com/abstract=2014738 Published: J. M. Pearce, "Expanding Photovoltaic Penetration with Residential Distributed Generation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Photovoltaic Penetration with Residential Distributed Generation from Hybrid Solar Photovoltaic + Combined Heat.08.012 Expanding Photovoltaic Penetration with Residential Distributed Generation from Hybrid Solar Photovoltaic and power (CHP) systems has provided the opportunity for inhouse power backup of residentialscale

  17. Solar industrial process heat

    SciTech Connect (OSTI)

    Lumsdaine, E.

    1981-04-01T23:59:59.000Z

    The aim of the assessment reported is to candidly examine the contribution that solar industrial process heat (SIPH) is realistically able to make in the near and long-term energy futures of the United States. The performance history of government and privately funded SIPH demonstration programs, 15 of which are briefly summarized, and the present status of SIPH technology are discussed. The technical and performance characteristics of solar industrial process heat plants and equipment are reviewed, as well as evaluating how the operating experience of over a dozen SIPH demonstration projects is influencing institutional acceptance and economoc projections. Implications for domestic energy policy and international implications are briefly discussed. (LEW)

  18. Implementations of electric vehicle system based on solar energy in Singapore : assessment of solar photovoltaic systems

    E-Print Network [OSTI]

    Sun, Li

    2009-01-01T23:59:59.000Z

    To evaluate the feasibility of solar energy based Electric Vehicle Transportation System in Singapore, the state of the art Photovoltaic Systems have been reviewed in this report with a focus on solar cell technologies. ...

  19. Residential Solar Water Heating Rebates

    Broader source: Energy.gov [DOE]

    New Hampshire offers a rebate for residential solar water-heating systems and solar space-heating systems. The rebate is equal to $1,500 for systems with an annual estimated output of 5.5 MMBTU to...

  20. Solar heating system

    DOE Patents [OSTI]

    Schreyer, James M. (Oak Ridge, TN); Dorsey, George F. (Concord, TN)

    1982-01-01T23:59:59.000Z

    An improved solar heating system in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75.degree. to 180.degree. F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing and releasing heat for distribution.

  1. Improved solar heating systems

    DOE Patents [OSTI]

    Schreyer, J.M.; Dorsey, G.F.

    1980-05-16T23:59:59.000Z

    An improved solar heating system is described in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75 to 180/sup 0/F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing ad releasing heat for distribution.

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

    E-Print Network [OSTI]

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

  3. SURVEILLANCE OF PHOTOVOLTAIC SOLAR ENERGY SYSTEMS USING METEOSAT DERIVED IRRADIANCES

    E-Print Network [OSTI]

    Heinemann, Detlev

    SURVEILLANCE OF PHOTOVOLTAIC SOLAR ENERGY SYSTEMS USING METEOSAT DERIVED IRRADIANCES Annette Hammer.Heinemann@uni-oldenburg.de 2Enecolo AG, Lindhof 235, CH-8617 M¨onchaltorf 3Fraunhofer Insitute for Solar Energy Systems Wiemken3, Hans Georg Beyer4, Vincent van Dijk5, Jethro Betcke5 1Dept. of Energy and Semiconductor Research

  4. PERFORMANCE OF A CONCENTRATING PHOTOVOLTAIC/THERMAL SOLAR COLLECTOR

    E-Print Network [OSTI]

    increased solar energy conversion and potential cost benefits (Fujisawa and Tani, 1997, 2001, Huang et alPERFORMANCE OF A CONCENTRATING PHOTOVOLTAIC/THERMAL SOLAR COLLECTOR Joe S Coventry Centre for Sustainable Energy Systems, Australian National University, Canberra, 0200, Australia +612 6125 3976, +612

  5. Building America Best Practices Series, Volume 6: High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems

    SciTech Connect (OSTI)

    Baechler, Michael C.; Gilbride, Theresa L.; Ruiz, Kathleen A.; Steward, Heidi E.; Love, Pat M.

    2007-06-04T23:59:59.000Z

    This guide is was written by PNNL for the US Department of Energy's Building America program to provide information for residential production builders interested in building near zero energy homes. The guide provides indepth descriptions of various roof-top photovoltaic power generating systems for homes. The guide also provides extensive information on various designs of solar thermal water heating systems for homes. The guide also provides construction company owners and managers with an understanding of how solar technologies can be added to their homes in a way that is cost effective, practical, and marketable. Twelve case studies provide examples of production builders across the United States who are building energy-efficient homes with photovoltaic or solar water heating systems.

  6. Solar heated rotary kiln

    DOE Patents [OSTI]

    Shell, Pamela K. (Tracy, CA)

    1984-01-01T23:59:59.000Z

    A solar heated rotary kiln utilized for decomposition of materials, such as zinc sulfate. The rotary kiln has an open end and is enclosed in a sealed container having a window positioned for directing solar energy into the open end of the kiln. The material to be decomposed is directed through the container into the kiln by a feed tube. The container is also provided with an outlet for exhaust gases and an outlet for spent solids, and rests on a tiltable base. The window may be cooled and kept clear of debris by coolant gases.

  7. ADAPTIVE HYSTERESIS CURRENT CONTROL OF INVERTER FOR SOLAR PHOTOVOLTAIC APPLICATIONS

    E-Print Network [OSTI]

    unknown authors

    2011-01-01T23:59:59.000Z

    Abstract – Power inverters are used to convert the D.C power produced by the solar photovoltaic cell into AC. This paper presents a novel Adaptive Hysteresis Current Controller to control the inverter, used in the solar photovoltaic cell. The proposed controller is capable of reducing the total harmonic distortion and to provide constant switching frequency. The mathematical model of Photovoltaic array is developed using the Newton’s method using the parameter obtained from a commercial photovoltaic data sheet under variable weather conditions, in which the effect of irradiance and temperature are considered. The modeled Photovoltaic array is interfaced with DC-DC boost converter, AC-DC inverter and load. A DC-DC boost converter is used to step up the input DC voltage of the Photovoltaic array while the DC-AC single-phase inverter converts the input DC comes from boost converter into AC. The performance of the proposed controller of inverter is evaluated through MATLAB-Simulation. The results obtained with the proposed algorithm are compared with those obtained when using conventional fixed hysteresis current controller for single-phase photovoltaic inverter in terms of THD and switching frequency.

  8. Operational results from the Saudi Solar Village Photovoltaic power system

    SciTech Connect (OSTI)

    Huraib, F.; Al-Sani, A.; Khoshami, B.H.

    1982-08-01T23:59:59.000Z

    The world's largest photovoltaic power system was carried into the operation phase a few months ago. This system was developed and fabricated in the United States and it is providing electrical energy to three remote villages in Saudi Arabia. The facility includes a 350 kW photovoltaic array, 1-MW diesel powered generator, 1100 kWH lead acid batteries, a 300 KVA inverter and a solar weather data monitoring station. The photovoltaic power system is capable of completely automatic operation. It is designed to operate in stand-alone and cogeneration modes of operation.

  9. Energy 101: Solar Photovoltaics | 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 MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing Zirconia Nanoparticles asSecond stage ofDefects on .Heat PumpsLumens EnergySolar

  10. EEC 289-L Photovoltaics and Solar Cells 3 Units Winter Quarter (Alternate Years)

    E-Print Network [OSTI]

    EEC 289-L Photovoltaics and Solar Cells 3 Units ­ Winter Quarter (Alternate Years) Prerequisite, and third-generation photovoltaics and solar cells, including design, fabrication technology, and grid physics of photovoltaics a. Device operation and performance metrics b. Properties of solar radiation c

  11. SOLARIZE RALEIGH PILOT PROGRAM DRAFT Request for Proposals from Installers of Residential Solar Photovoltaic Systems

    E-Print Network [OSTI]

    Photovoltaic Systems Proposed Posting Date: February 4, 2014 I. OPPORTUNITY SUMMARY: The North Carolina Solar in conjunction with the Solarize Raleigh Program in Raleigh, North Carolina. Solarize Raleigh marketing in areas subject to the City's extra-territorial jurisdiction) are eligible to participate. The Solarize

  12. Sawnee EMC- Solar Photovoltaic Rebate Program

    Broader source: Energy.gov [DOE]

    Sawnee EMC offers a rebate of $300 per kilowatt (kW) to residential customers who install photovoltaic (PV) systems that meet the cooperative's [http://www.sawnee.com/Rate%20Pdfs/NEM%20Rider.pdf...

  13. Laminated photovoltaic modules using back-contact solar cells

    DOE Patents [OSTI]

    Gee, James M. (Albuquerque, NM); Garrett, Stephen E. (Albuquerque, NM); Morgan, William P. (Albuquerque, NM); Worobey, Walter (Albuquerque, NM)

    1999-09-14T23:59:59.000Z

    Photovoltaic modules which comprise back-contact solar cells, such as back-contact crystalline silicon solar cells, positioned atop electrically conductive circuit elements affixed to a planar support so that a circuit capable of generating electric power is created. The modules are encapsulated using encapsulant materials such as EVA which are commonly used in photovoltaic module manufacture. The module designs allow multiple cells to be electrically connected in a single encapsulation step rather than by sequential soldering which characterizes the currently used commercial practices.

  14. E-Print Network 3.0 - area photovoltaic solar Sample Search Results

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

    nederst) Summary: 2 135 0 9781844074617 Photovoltaics for Professionals Solar Electric Systems Marketing, Design... Designing with Solar Power A Source Book for Building Integrated...

  15. Integrating Solar Thermal and Photovoltaic Systems in Whole Building Energy Simulation

    E-Print Network [OSTI]

    Cho, S.; Haberl, J.

    to achieve further energy consumption reductions. To accomplish this, the F- Chart program was used for the solar thermal system analysis and the PV F-Chart program for the solar photovoltaic (PV) system analysis. Authors show how DOE-2.1e simulation... Time series plots of space heating and service hot water loads from SYSTEMS and PLANT simulation runs Due to the fact that the solar thermal systems analysis program, F-Chart, takes into account the system efficiencies in its loads calculation...

  16. EELE408 Photovoltaics Lecture 10 Solar Cell Operation

    E-Print Network [OSTI]

    Kaiser, Todd J.

    @ece.montana.edu Department of Electrical and Computer Engineering Montana State University - Bozeman P-N Junction Solar Cell of the number of carriers collected by the solar cell to the number of photons of a given energy incident energy is not utilized by the solar cell and instead goes to heating the solar cell 12 solar cell

  17. Operation o Solar Photovoltaic-Thermal (PVT) Hybrid System in KIER

    E-Print Network [OSTI]

    Naveed, A.T.; Lee, E. J.; Kang, E. C.

    2006-01-01T23:59:59.000Z

    The details of the Photovoltaic Thermal (PVT) hybrid air heating system, UTC air heating system and its effect on the performance of photovoltaic (PV) module and room temperature in KIER are explained in this paper. Two identical test rooms were...

  18. Net Zero Residential Test Facility Gaithersburg, MD Solar Photovoltaic Panels

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Heating System Preheat - Solar thermal 80-gal tank, electric auxiliary heating Active, indirect forced-gal tank, electric auxiliary heating Multiple operating modes: heat pump, hybrid and standard and Ventilation Systems Advanced Air-to-Air Heat Pump Systems Suitable for Low Energy Homes Geothermal Heat Pump

  19. High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems

    SciTech Connect (OSTI)

    Baechler, M.; Gilbride, T.; Ruiz, K.; Steward, H.; Love, P.

    2007-06-01T23:59:59.000Z

    This document is the sixth volume of the Building America Best Practices Series. It presents information that is useful throughout the United States for enhancing the energy efficiency practices in the specific climate zones that are presented in the first five Best Practices volumes. It provides an introduction to current photovoltaic and solar thermal building practices. Information about window selection and shading is included.

  20. Oncor Energy Efficiency Programs Solar Photovoltaic and Demand Response

    E-Print Network [OSTI]

    Tyra, K.; Hanel, J.

    2012-01-01T23:59:59.000Z

    Oncor Energy Efficiency Programs Solar Photovoltaic and Demand Response October 10, 2012 ENERGY EFFICIENCY PROGRAMS OVERVIEW ?Program rules and guidelines established by Public Utility Commission of Texas (PUCT) ?All Texas investor... to be administered by transmission-distribution utilities ?Programs are implemented by Energy Efficiency Services Providers and Retail Electric Providers 1 WHY DOES ONCOR DO SOLAR PV? ?Helps meet our energy efficiency goals ?Helps customers reduce...

  1. Interdisciplinary Institute for Innovation How do solar photovoltaic feed-in

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    with solar panel and silicon prices? An empirical study Arnaud De La Tour Matthieu Glachant Working Paper 13Interdisciplinary Institute for Innovation How do solar photovoltaic feed-in tariffs interact@mines-paristech.fr hal-00809449,version2-27May2013 #12;1 How do solar photovoltaic feed-in tariffs interact with solar

  2. Passive solar heating and analysis

    SciTech Connect (OSTI)

    Jones, R.W.

    1984-01-01T23:59:59.000Z

    Passive solar heating experience and analysis techniques are reviewed with emphasis on annual auxiliary heat requirement. The role of analysis in the design of passive solar buildings is discussed. Selected results for existing systems are presented for locations in Saudi Arabia and climatically similar locations in the US. Advanced systems in the research stage are described.

  3. Novel Controls of Photovoltaic (PV) Solar Farms.

    E-Print Network [OSTI]

    Rahman, Shah Arifur

    2012-01-01T23:59:59.000Z

    ??Solar Farms are absolutely idle in the night and even during daytime operate below capacity in early mornings and late afternoons. Thus, the entire expensive… (more)

  4. Solar Leasing for Residential Photovoltaic Systems

    Broader source: Energy.gov [DOE]

    This publication examines the solar lease option for residential PV systems and describes two solar lease programs already in place. As a result of the $2,000 cap on the residential ITC being lifted in 2009, the expansion of the solar lease model across the United States may be slower than anticipated. The lease model, though, still offers homeowners some distinct advantages. This publication helps homeowners revisit the comparison between the solar lease and home-equity financing in light of the change to the ITC.

  5. Title: CEL Solar Photovoltaic Power Project in El Salvador Principal Investigator: Abbas Ghassemi

    E-Print Network [OSTI]

    Johnson, Eric E.

    Title: CEL Solar Photovoltaic Power Project in El Salvador Principal Investigator: Abbas Ghassemi solar resource, studying different technology options, anticipating performance, and evaluating the economics of the solar power technologies. The NMSU team is evaluating the potential environmental impacts

  6. Where solar thermal meets photovoltaic for high-efficiency power conversion

    E-Print Network [OSTI]

    Bierman, David M. (David Matthew)

    2014-01-01T23:59:59.000Z

    To develop disruptive techniques which generate power from the Sun, one must understand the aspects of existing technologies that limit performance. Solar thermal and solar photovoltaic schemes dominate today's solar market ...

  7. Materials for Solar Energy: Photovoltaics The University Center of Excellence for Photovoltaics Research and Education (UCEP) at

    E-Print Network [OSTI]

    Li, Mo

    , Anneal Ion Implantation UV laser LPCVD Polysilicon depostition PV Systems Sizing PV Form PC Cad SizeMaterials for Solar Energy: Photovoltaics The University Center of Excellence for Photovoltaics hood, VL Texturing hood PV Cost E-cost (Calculates cost of electricity system) M-Cost 1 (Excel

  8. Solar Water Heating Webinar | Department of Energy

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

    Weatherization Assistance Program Pilot Projects Solar Water Heating Webinar Solar Water Heating Webinar Watch a recording of National Renewable Energy Laboratory (NREL)...

  9. The CO2 Reduction Potential of Combined Heat and Power in California's Commercial Buildings

    E-Print Network [OSTI]

    Stadler, Michael

    2010-01-01T23:59:59.000Z

    heat exchangers, solar thermal collectors, absorptioncells; • photovoltaics (PV) and solar thermal collectors; •for application of solar thermal and recovered heat to end-

  10. Solar heat collector

    SciTech Connect (OSTI)

    Takeuchi, H.; Mikiya, T.

    1987-03-17T23:59:59.000Z

    An evacuated double-tubing solar heat collector is described comprising: an inner tube having an open end and a closed end; a selective absorption film applied over an exterior surface of the inner tube; an outer tube having an open end and a closed end; the inner tube being constructed to be received within the outer tube; and a substantially continuous annular coil spring ring being substantially found in cross section and of a predetermined thickness. The coil spring ring is disposed between and engages an interior surface of the outer tube and the exterior surface of the inner tube for spacing and resiliently supporting the inner tube relative to the outer tube. The ring is freely rotatably positioned to be moved axially along the length of the inner tube due only to frictional forces exerted on the coil spring. The coil spring ring is positioned on the inner tube at approximately a middle position along the length of the inner tube by being initially positioned on the inner tube adjacent to the closed end thereof and rotated upon itself axially along the inner tube only by frictional engagement with the interior surface of the outer tube as the inner tube is inserted into the open end of the outer tube and moved to a fully inserted position within the outer tube. The open end of the inner tube and the open end of the outer tube are fused to form a junction and hermetically sealed.

  11. 1 Copyright 2011 by ASME MATERIAL OPTIMIZATION FOR CONCENTRATED SOLAR PHOTOVOLTAIC AND

    E-Print Network [OSTI]

    1 Copyright © 2011 by ASME MATERIAL OPTIMIZATION FOR CONCENTRATED SOLAR PHOTOVOLTAIC AND THERMAL CO of almost all renewable energies on earth. There are extensive activities in the area of solar photovoltaic are essential in everyday life applications. We previously reported the energy efficiency of an optimized solar

  12. 2007 IEEE Canada Electrical Power Conference Solar Photovoltaic Array's Shadow Evaluation

    E-Print Network [OSTI]

    Lehman, Brad

    whether the maximum output power of the solar photovoltaic arrays under the system is sufficiently cost, and the the "shading factor," which is defined as the ratio of the non- maximum output power of the solar photovoltaic solar PV arrays: effects on performance, and in particular the output power of * In the numerical method

  13. Solar and Photovoltaic Data from the University of Oregon Solar Radiation Monitoring Laboratory (UO SRML)

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

    The UO SRML is a regional solar radiation data center whose goal is to provide sound solar resource data for planning, design, deployment, and operation of solar electric facilities in the Pacific Northwest. The laboratory has been in operation since 1975. Solar data includes solar resource maps, cumulative summary data, daily totals, monthly averages, single element profile data, parsed TMY2 data, and select multifilter radiometer data. A data plotting program and other software tools are also provided. Shade analysis information and contour plots showing the effect of tilt and orientation on annual solar electric system perfomance make up a large part of the photovoltaics data.(Specialized Interface)

  14. Japan's Solar Photovoltaic (PV) Market: An Analysis of Residential System Prices (Presentation)

    SciTech Connect (OSTI)

    James, T.

    2014-03-01T23:59:59.000Z

    This presentation summarizes market and policy factors influencing residential solar photovoltaic system prices in Japan, and compares these factors to related developments in the United States.

  15. An analysis of the current costs and future prospects of solar photovoltaic electricity.

    E-Print Network [OSTI]

    Wong, Alexander Tung-Qiang

    2010-01-01T23:59:59.000Z

    ??The solar photovoltaic industry has many barriers to overcome before it can become a technically and economically competitive generation source including (1) lowering true generation… (more)

  16. Solar Water Heating Incentive Program

    Broader source: Energy.gov [DOE]

    Beginning in the fall of 2003, Energy Trust of Oregon's Solar Water Heating (SWH) Incentive Program offers incentives to customers of Pacific Power, PGE, NW Natural Gas and Cascade Natural Gas who...

  17. Solar air heating system for combined DHW and space heating

    E-Print Network [OSTI]

    Solar air heating system for combined DHW and space heating solar air collector PV-panel fannon-return valve DHW tank mantle cold waterhot water roof Solar Energy Centre Denmark Danish Technological Institute SEC-R-29 #12;Solar air heating system for combined DHW and space heating Søren �stergaard Jensen

  18. IEEE JOURNAL OF PHOTOVOLTAICS, VOL. 2, NO. 2, APRIL 2012 123 Gallium Arsenide Solar Cell Absorption

    E-Print Network [OSTI]

    Grandidier, Jonathan

    IEEE JOURNAL OF PHOTOVOLTAICS, VOL. 2, NO. 2, APRIL 2012 123 Gallium Arsenide Solar Cell Absorption--Gallium arsenide, nanospheres, photovoltaic systems, whispering gallery modes (WGMs). I. INTRODUCTION THE route as the active layer is thinned [2]. Thin-film photovoltaics offer the possibility to significantly reduce

  19. E-Print Network 3.0 - assess solar detoxification Sample Search...

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

    accessibility of solar installation training and expand the nation's trained solar... on solar photovoltaic (PV) and solar heating and cooling (SHC) ... Source: North Carolina...

  20. FINAL REPORT OF RESEARCH ON CuxS/ (Cd,Zn)S PHOTOVOLTAIC SOLAR ENERGY CONVERTERS 3/77 - 9/79

    E-Print Network [OSTI]

    Chin, B.L.

    2013-01-01T23:59:59.000Z

    S/(Cd,Zn)S PHOTOVOLTAIC SOLAR ENERGY CONVERTERS 3/77 - 9/79Research on Photovoltaic Solar Energy Converters CuxSI(Cd~

  1. NREL: Photovoltaics Research - Solar Energy Research Facility

    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 | NationalJohn F. Geisz, Ph.D.Solar Energy Research Facility Photo

  2. Paper presented at the 17th European Photovoltaic Solar Energy Conference, October 2001, Munich

    E-Print Network [OSTI]

    Heinemann, Detlev

    Paper presented at the 17th European Photovoltaic Solar Energy Conference, October 2001, Munich Fraunhofer Institute for Solar Energy Systems ISE, 3 Enecolo AG, 4 University of Oldenburg, Department

  3. Solar Photovoltaic Financing: Residential Sector Deployment

    SciTech Connect (OSTI)

    Coughlin, J.; Cory, K.

    2009-03-01T23:59:59.000Z

    This report presents the information that homeowners and policy makers need to facilitate PV financing at the residential level. The full range of cash payments, bill savings, and tax incentives is covered, as well as potentially available solar attribute payments. Traditional financing is also compared to innovative solutions, many of which are borrowed from the commercial sector. Together, these mechanisms are critical for making the economic case for a residential PV installation, given its high upfront costs. Unfortunately, these programs are presently limited to select locations around the country. By calling attention to these innovative initiatives, this report aims to help policy makers consider greater adoption of these models to benefit homeowners interested installing a residential PV system.

  4. Challenges to Overcurrent Protection Devices under Line-line Faults in Solar Photovoltaic Arrays

    E-Print Network [OSTI]

    Lehman, Brad

    Challenges to Overcurrent Protection Devices under Line-line Faults in Solar Photovoltaic Arrays Ye-MA, LLC Newburyport, MA, US Abstract--Solar photovoltaic (PV) arrays behave distinctively from remain undetected, which could lead to reduced system efficiency, reduced system reliability, and even

  5. NANOSTRUCTURED SOLAR CELLS FOR HIGH EFFICIENCY PHOTOVOLTAICS Christiana B. Honsberg1

    E-Print Network [OSTI]

    Honsberg, Christiana

    for solar energy conversion. NANOSTRUCTURED SOLAR CELLS Nanostructured solar cells offer several advantages to contribute to high efficiency devices NEW CONCEPTS FOR SOLAR CELLS An important advantage for nanostructuredNANOSTRUCTURED SOLAR CELLS FOR HIGH EFFICIENCY PHOTOVOLTAICS Christiana B. Honsberg1 , Allen M

  6. Udhaya Energy Photovoltaics P Ltd UPV 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 CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov PtyInformation UC 19-6-401 et seq. -Udhaya Energy Photovoltaics P Ltd UPV Solar

  7. Passive Solar Building Design and Solar Thermal Space Heating Webinar

    Broader source: Energy.gov [DOE]

    Webinar of National Renewable Energy Laboratory (NREL) Senior Engineer Andy Walker's presentation about passive solar building design and solar thermal space heating technologies and applications.

  8. Effect of Solar Panel Cooling on Photovoltaic Performance.

    E-Print Network [OSTI]

    Ali, Rehan

    2014-01-01T23:59:59.000Z

    ?? One of the main problems in using the photovoltaic system is the low energy conversion efficiency of photovoltaic cells and, furthermore, during the long… (more)

  9. A solar photovoltaic power system for use in Antarctica

    SciTech Connect (OSTI)

    Kohout, L.L.; Merolla, A.; Colozza, A.

    1993-12-01T23:59:59.000Z

    A solar photovoltaic power system was designed and built at the NASA Lewis Research Center as part of the NASA/NSF Antarctic Space Analog Program. The system was installed at a remote field camp at Lake Hoare in the Dry Valleys, and provided a six-person field team with electrical power for personal computers and printers, lab equipment, lighting, and a small microwave oven. The system consists of three silicon photovoltaic sub-arrays delivering a total of 1.5 kWe peak power, three lead-acid gel battery modules supplying 2.4 kWh, and an electrical distribution system which delivers 120 Vac and 12 Vdc to the user. The system was modularized for ease of deployment and operation. Previously the camp has been powered by diesel generators, which have proven to be both noisy and polluting. The NSF, in an effort to reduce their dependence on diesel fuel from both an environmental and cost standpoint, is interested in the use of alternate forms of energy, such as solar power. Such a power system also will provide NASA with important data on system level deployment and operation in a remote location by a minimally trained crew, as well as validate initial integration concepts.

  10. Enhanced Photovoltaic Performance of Nanostructured Hybrid Solar Cell Using Highly Oriented TiO2 Nanotubes

    E-Print Network [OSTI]

    Cao, Guozhong

    -called third generation of solar cells including dye-sensitized solar cells, DSCs2,3 and organic phoEnhanced Photovoltaic Performance of Nanostructured Hybrid Solar Cell Using Highly Oriented TiO2 nanotubes can be effectively controlled for the suitable use for a hybrid solar cell by varying the diameter

  11. Advances in solar photovoltaics are urgently needed to increase the performance and reduce the cost of harvesting solar power. Solution-processed photovoltaics are cost-effective to manufacture and offer the potential for physical flexibility.

    E-Print Network [OSTI]

    Advances in solar photovoltaics are urgently needed to increase the performance and reduce the cost of harvesting solar power. Solution-processed photovoltaics are cost-effective to manufacture and offer.Controllingthecollectionandminimizingthetrappingofchargecarriersattheseboundariesiscrucialtoefficiency. Materials interface engineering for solution-processed photovoltaics Michael Graetzel1 , René A. J. Janssen2

  12. Solar-heated rotary kiln

    DOE Patents [OSTI]

    Shell, P.K.

    1982-04-14T23:59:59.000Z

    A solar heated rotary kiln utilized for decomposition of materials, such as zinc sulfate is disclosed. The rotary kiln has an open end and is enclosed in a sealed container having a window positioned for directing solar energy into the open end of the kiln. The material to be decomposed is directed through the container into the kiln by a feed tube. The container is also provided with an outlet for exhaust gases and an outlet for spent solids, and rests on a tiltable base. The window may be cooled and kept clear of debris by coolant gases.

  13. Generic solar photovoltaic system dynamic simulation model specification.

    SciTech Connect (OSTI)

    Ellis, Abraham; Behnke, Michael Robert; Elliott, Ryan Thomas

    2013-10-01T23:59:59.000Z

    This document is intended to serve as a specification for generic solar photovoltaic (PV) system positive-sequence dynamic models to be implemented by software developers and approved by the WECC MVWG for use in bulk system dynamic simulations in accordance with NERC MOD standards. Two specific dynamic models are included in the scope of this document. The first, a Central Station PV System model, is intended to capture the most important dynamic characteristics of large scale (> 10 MW) PV systems with a central Point of Interconnection (POI) at the transmission level. The second, a Distributed PV System model, is intended to represent an aggregation of smaller, distribution-connected systems that comprise a portion of a composite load that might be modeled at a transmission load bus.

  14. Solar kinetics` photovoltaic concentrator module and tracker development

    SciTech Connect (OSTI)

    White, D.L.; Howell, B. [Solar Kinetics, Inc., Dallas, TX (United States)

    1995-11-01T23:59:59.000Z

    Solar Kinetics, Inc., has been developing a point-focus concentrating photovoltaic module and tracker system under contract to Sandia National Laboratories. The primary focus of the contract was to achieve a module design that was manufacturable and passed Sandia`s environmental testing. Nine modules of two variations were assembled, tested, and characterized in Phase 1, and results of these tests were promising, with module efficiency approaching the theoretical limit achievable with the components used. The module efficiency was 11.9% at a solar irradiance of 850 W/m{sup 2} and an extrapolated cell temperature of 25{degrees}C. Improvements in module performance are anticipated as cell efficiencies meet their expectations. A 2-kW tracker and controller accommodating 20 modules was designed, built, installed, and operated at Solar Kinetics` test site. The drive used many commercially available components in an innovative arrangement to reduce cost and increase reliability. Backlash and bearing play were controlled by use of preloaded, low slip-stick, synthetic slide bearings. The controller design used a standard industrial programmable logic controller to perform ephemeris calculations, operate the actuators, and monitor encoders.

  15. Reliability analysis of solar photovoltaic system using hourly mean solar radiation data

    SciTech Connect (OSTI)

    Moharil, Ravindra M. [Department of Electrical Engineering, Yeshwantrao Chavan College of Engineering, Nagpur, Maharashtra (India); Kulkarni, Prakash S. [Department of Electrical Engineering, Visvesvaraya National Institute of Technology, South Ambazari Road, Nagpur 440011, Maharashtra (India)

    2010-04-15T23:59:59.000Z

    This paper presents the hourly mean solar radiation and standard deviation as inputs to simulate the solar radiation over a year. Monte Carlo simulation (MCS) technique is applied and MATLAB program is developed for reliability analysis of small isolated power system using solar photovoltaic (SPV). This paper is distributed in two parts. Firstly various solar radiation prediction methods along with hourly mean solar radiation (HMSR) method are compared. The comparison is carried on the basis of predicted electrical power generation with actual power generated by SPV system. Estimation of solar photovoltaic power using HMSR method is close to the actual power generated by SPV system. The deviation in monsoon months is due to the cloud cover. In later part of the paper various reliability indices are obtained by HMSR method using MCS technique. Load model used is IEEE-RTS. Reliability indices, additional load hours (ALH) and additional power (AP) reduces exponentially with increase in load indicates that a SPV source will offset maximum fuel when all of its generated energy is utilized. Fuel saving calculation is also investigated. Case studies are presented for Sagardeep Island in West Bengal state of India. (author)

  16. ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Photovoltaic Systems

    E-Print Network [OSTI]

    Honsberg, Christiana

    1 ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Photovoltaic Systems · Central issues in photovoltaic systems · Characteristics of energy systems & performance, these parameters determine the minimum effective system size. · Thermal-based systems are · PV systems are both

  17. Solar steam generation by heat localization

    E-Print Network [OSTI]

    Ghasemi, Hadi

    Currently, steam generation using solar energy is based on heating bulk liquid to high temperatures. This approach requires either costly high optical concentrations leading to heat loss by the hot bulk liquid and heated ...

  18. Low-Cost Photovoltaics: Luminescent Solar Concentrators And Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01T23:59:59.000Z

    using front-facing photovoltaic cell luminescent solarwith front-facing photovoltaic cells using weighted Montefor tandem photovoltaic cells,” Thin Solid Films, vol. 516,

  19. Low-Cost Photovoltaics: Luminescent Solar Concentrators And Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01T23:59:59.000Z

    for building integrated photovoltaics,” 2013, vol. 8821, pp.of building integrated photovoltaics,” Sol. Energy, vol. 85,of building-integrated photovoltaics,” Energy, vol. 26, no.

  20. Milk, Eggs and Solar: Grocery Co-Op Puts Photovoltaics to Work...

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

    Market, the 3,000 daily customers also learn about the co-op's 136 rooftop photovoltaic panels and monthly "Solar Made Simple" seminars. Reducing energy demand With freezer and...

  1. Submodule Integrated Distributed Maximum Power Point Tracking for Solar Photovoltaic Applications

    E-Print Network [OSTI]

    Pilawa-Podgurski, Robert C. N.

    This paper explores the benefits of distributed power electronics in solar photovoltaic applications through the use of submodule integrated maximum power point trackers (MPPT). We propose a system architecture that provides ...

  2. Photovoltaic effect in InSe Application to Solar Energy Conversion

    E-Print Network [OSTI]

    Boyer, Edmond

    253 Photovoltaic effect in InSe Application to Solar Energy Conversion A. Segura, J. P. Guesdon, JSe is shown to be a new material with attractive characteristics for solar energy conversion. PerformanceV at 300 K and it is thus close to the theoretical optimum for solar energy conversion. Since its transport

  3. Absorber and emitter for solar thermo-photovoltaic systems to achieve efficiency

    E-Print Network [OSTI]

    Fan, Shanhui

    Absorber and emitter for solar thermo- photovoltaic systems to achieve efficiency exceeding-junction solar cell can attain efficiency that exceeds the Shockley-Queisser limit. ©2009 Optical Society and links 1. W. Shockley, and H. J. Queisser, "Detailed Balance Limit of Efficiency of p-n Junction Solar

  4. Department of Electrical Engineering Spring 2011 Automated Solar Tracking Photovoltaic Array

    E-Print Network [OSTI]

    Demirel, Melik C.

    system to align a solar panel toward the sun throughout the day while capable of charging USB devices to manufacture a portable, lightweight solar panel which will maximize efficiency for outdoor enthusiastsPENNSTATE Department of Electrical Engineering Spring 2011 Automated Solar Tracking Photovoltaic

  5. Insuring Solar Photovoltaics: Challenges and Possible Solutions; (Revised)

    SciTech Connect (OSTI)

    Speer, B.; Mendelsohn, M.; Cory, K.

    2010-02-01T23:59:59.000Z

    Insuring solar photovoltaic (PV) systems poses certain challenges. Insurance premiums, which can represent a significant part of overall costs for PV developers, can affect market competition. The market for certain types of insurance products is limited. Historical loss data is lacking, and test data for the long-term viability of PV products under real-life conditions is limited. Insurers' knowledge about PV systems and the PV industry is uneven even as the industry introduces innovative contractual structures and business models. Interviews conducted for this report with PV project developers, insurance brokers, and underwriters suggest government actions aimed at better testing, data collection, and communication could facilitate the development of a market for PV insurance products. This report identifies actions by governments, national laboratories, and other stakeholders that could accelerate the development of insurance products in support PV systems. Such actions include: increasing understanding of the solar PV industry among insurance professionals; expanding the availability of PV historical loss data; evaluating the expansion of renewable energy business classification; developing module and component testing capabilities and services offered by federal labs; and, advancing industry standards for PV system installers.

  6. Hybrid photovoltaic/thermal (PV/T) solar systems simulation with Simulink/Matlab

    SciTech Connect (OSTI)

    da Silva, R.M.; Fernandes, J.L.M. [Department of Mechanical Engineering, Instituto Superior Tecnico, Lisbon (Portugal)

    2010-12-15T23:59:59.000Z

    The purpose of this work consists in thermodynamic modeling of hybrid photovoltaic-thermal (PV/T) solar systems, pursuing a modular strategy approach provided by Simulink/Matlab. PV/T solar systems are a recently emerging solar technology that allows for the simultaneous conversion of solar energy into both electricity and heat. This type of technology present some interesting advantages over the conventional ''side-by-side'' thermal and PV solar systems, such as higher combined electrical/thermal energy outputs per unit area, and a more uniform and aesthetical pleasant roof area. Despite the fact that early research on PV/T systems can be traced back to the seventies, only recently it has gained a renewed impetus. In this work, parametric studies and annual transient simulations of PV/T systems are undertaken in Simulink/Matlab. The obtained results show an average annual solar fraction of 67%, and a global overall efficiency of 24% (i.e. 15% thermal and 9% electrical), for a typical four-person single-family residence in Lisbon, with p-Si cells, and a collector area of 6 m{sup 2}. A sensitivity analysis performed on the PV/T collector suggests that the most important variable that should be addressed to improve thermal performance is the photovoltaic (PV) module emittance. Based on those results, some additional improvements are proposed, such as the use of vacuum, or a noble gas at low-pressure, to allow for the removal of PV cells encapsulation without air oxidation and degradation, and thus reducing the PV module emittance. Preliminary results show that this option allows for an 8% increase on optical thermal efficiency, and a substantial reduction of thermal losses, suggesting the possibility of working at higher fluid temperatures. The higher working temperatures negative effect in electrical efficiency was negligible, due to compensation by improved optical properties. The simulation results are compared with experimental data obtained from other authors and perform reasonably well. The Simulink modeling platform has been mainly used worldwide on simulation of control systems, digital signal processing and electric circuits, but there are very few examples of application to solar energy systems modeling. This work uses the modular environment of Simulink/Matlab to model individual PV/T system components, and to assemble the entire installation layout. The results show that the modular approach strategy provided by Matlab/Simulink environment is applicable to solar systems modeling, providing good code scalability, faster developing time, and simpler integration with external computational tools, when compared with traditional imperative-oriented programming languages. (author)

  7. Performance of a solar-heated assembly building at Sandia National Laboratories

    SciTech Connect (OSTI)

    Haskins, D.E.

    1980-09-01T23:59:59.000Z

    The passive solar-heating system of the assembly building at Sandia National Laboratories' Photovoltaic Advanced Systems Test Facility is described and the thermal analysis of the building is given. Performance predictions are also given, and actual performance for December 1979 and January 1980 are shown.

  8. Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine California’s Solar Photovoltaic Subsidies?

    E-Print Network [OSTI]

    Borenstein, Severin

    2007-01-01T23:59:59.000Z

    is the “soiling” e?ect: dirty solar panels absorb less solarinstalling solar photovoltaic panels at their homes orStudies of solar PV production over a panel’s lifetime

  9. Solar Coronal Heating and Limb Effect

    E-Print Network [OSTI]

    Yi-Jia Zheng

    2013-05-24T23:59:59.000Z

    The quiet solar coronal heating problem and the observed center-to-limb wavelength variations of the solar lines (limb effect) can be explained. In this paper the quantitative calculations for these two phenomena are presented.

  10. Lakeland Electric- Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    Lakeland Electric, a municipal utility in Florida, is the nation's first utility to offer solar-heated domestic hot water on a "pay-for-energy" basis. The utility has contracted with a solar...

  11. Gulf Power- Solar Thermal Water Heating Program

    Broader source: Energy.gov [DOE]

    '''''This program reopened on October 3, 2011 for 2012 applications. Funding is limited and must be reserved through online application before the installation of qualifying solar water heating...

  12. Valley Electric Association- Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    Valley Electric Association (VEA), a nonprofit member owned cooperative, developed the domestic solar water heating program to encourage energy efficiency at the request of the membership. VEA...

  13. Modeling Photovoltaic and Concentrating Solar Power Trough Performance, Cost, and Financing with Solar Advisor Model

    SciTech Connect (OSTI)

    Blair, N.; Mehos, M.; Christensen, C.; Cameron, C.

    2008-01-01T23:59:59.000Z

    A comprehensive solar technology systems analysis model, the Solar Advisor Model (SAM), has been developed to support the federal R&D community and the solar industry by staff at the National Renewable Energy Laboratory (NREL) and Sandia National Laboratory. This model is able to model the finances, incentives, and performance of flat-plate photovoltaic (PV), concentrating PV, and concentrating solar power (specifically, parabolic troughs). The primary function of the model is to allow users to investigate the impact of variations in performance, cost, and financial parameters to better understand their impact on key figures of merit. Figures of merit related to the cost and performance of these systems include, but aren't limited to, system output, system efficiencies, levelized cost of energy, return on investment, and system capital and O&M costs. SAM allows users to do complex system modeling with an intuitive graphical user interface (GUI). In fact, all tables and graphics for this paper are taken directly from the model GUI. This model has the capability to compare different solar technologies within the same interface, making use of similar cost and finance assumptions. Additionally, the ability to do parametric and sensitivity analysis is central to this model. There are several models within SAM to model the performance of photovoltaic modules and inverters. This paper presents an overview of each PV and inverter model, introduces a new generic model, and briefly discusses the concentrating solar power (CSP) parabolic trough model. A comparison of results using the different PV and inverter models is also presented.

  14. 22nd European Photovoltaic Solar Energy Conference, Fiera Milano, Italy, 3-7 September 2007 Version: 30 August 2007

    E-Print Network [OSTI]

    22nd European Photovoltaic Solar Energy Conference, Fiera Milano, Italy, 3-7 September 2007 Version: 30 August 2007 FLUORINATED GREENHOUSE GASES IN PHOTOVOLTAIC MODULE MANUFACTURING: POTENTIAL EMISSIONS, The Netherlands V.M. Fthenakis, vmf@bnl.gov, Phone +1 631 344 2830, National Photovoltaic EH&S Research Center

  15. Project Profile: Innovative Ballasted Flat Roof Solar Photovoltaic...

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

    alone cost about 0.95 per watt for rooftop installations. Cascade is developing a plastic-based photovoltaic (PV) racking system that reduces mechanical and electrical labor,...

  16. EH AND S ANALYSIS OF DYE-SENSITIZED PHOTOVOLTAIC SOLAR CELL PRODUCTION.

    SciTech Connect (OSTI)

    BOWERMAN,B.; FTHENAKIS,V.

    2001-10-01T23:59:59.000Z

    Photovoltaic solar cells based on a dye-sensitized nanocrystalline titanium dioxide photoelectrode have been researched and reported since the early 1990's. Commercial production of dye-sensitized photovoltaic solar cells has recently been reported in Australia. In this report, current manufacturing methods are described, and estimates are made of annual chemical use and emissions during production. Environmental, health and safety considerations for handling these materials are discussed. This preliminary EH and S evaluation of dye-sensitized titanium dioxide solar cells indicates that some precautions will be necessary to mitigate hazards that could result in worker exposure. Additional information required for a more complete assessment is identified.

  17. A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System

    E-Print Network [OSTI]

    Norwood, Zachary Mills

    2011-01-01T23:59:59.000Z

    Concentrating Solar Combined Heat and Power Systemfor Distributed Concentrating Solar Combined Heat and Powerof solar combined heat and power systems . . . . . . .

  18. PV vs. Solar Water Heating- Simple Solar Payback

    Broader source: Energy.gov [DOE]

    Solar energy systems hang their hats on payback. Financial payback is as tangible as money in your bank account, while other types of payback—like environmental externalities—are not usually calculated in dollars. There’s no doubt that photovoltaic (PV) and solar hot water (SHW) systems will pay you back. Maybe not as quickly as you’d like, but all systems will significantly offset their cost over their lifetimes. Here we’ll try to answer: Which system will give the quickest return on investment (ROI)?

  19. Glass heat pipe evacuated tube solar collector

    DOE Patents [OSTI]

    McConnell, Robert D. (Lakewood, CO); Vansant, James H. (Tracy, CA)

    1984-01-01T23:59:59.000Z

    A glass heat pipe is adapted for use as a solar energy absorber in an evacuated tube solar collector and for transferring the absorbed solar energy to a working fluid medium or heat sink for storage or practical use. A capillary wick is formed of granular glass particles fused together by heat on the inside surface of the heat pipe with a water glass binder solution to enhance capillary drive distribution of the thermal transfer fluid in the heat pipe throughout the entire inside surface of the evaporator portion of the heat pipe. Selective coatings are used on the heat pipe surface to maximize solar absorption and minimize energy radiation, and the glass wick can alternatively be fabricated with granular particles of black glass or obsidian.

  20. The Heating & Acceleration of the Solar Wind

    E-Print Network [OSTI]

    Wurtele, Jonathan

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

  1. Sandia National Laboratories: Photovoltaic Systems Evaluation...

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

    Modeling & Simulation, Energy, Facilities, News, News & Events, Partnership, Photovoltaic, Photovoltaic Systems Evaluation Laboratory (PSEL), Renewable Energy, Solar, Solar...

  2. Soiling losses for solar photovoltaic systems in California

    E-Print Network [OSTI]

    Mejia, Felipe A; Kleissl, Jan

    2013-01-01T23:59:59.000Z

    additional solar energy could be harvested through panelsolar energy modeled from SAW ( ), the daily (relative) DC solar conversion efficiency ( ) for the solar panels

  3. Soiling losses for solar photovoltaic systems in California

    E-Print Network [OSTI]

    Mejia, Felipe A; Kleissl, Jan

    2013-01-01T23:59:59.000Z

    Utilities Commission California Solar Initiative ProgramCalifornia. Report to the California Solar Initiative RD&DItron, Inc. , CPUC California Solar Initiative 2010 Impact

  4. Solar Ready Buildings Planning Guide

    SciTech Connect (OSTI)

    Lisell, L.; Tetreault, T.; Watson, A.

    2009-12-01T23:59:59.000Z

    This guide offers a checklist for building design and construction to enable installation of solar photovoltaic and heating systems at some time after the building is constructed.

  5. Austin Utilities- Solar Rebate Program

    Broader source: Energy.gov [DOE]

    Austin Utilities provides incentives for their residential and commercial customers to install photovoltaic (PV) and solar water heating systems. Qualifying PV systems can earn $1 per watt;...

  6. Assessing the drivers of regional trends in solar photovoltaic manufacturing

    E-Print Network [OSTI]

    Goodrich, Alan C.

    The photovoltaic (PV) industry has grown rapidly as a source of energy and economic activity. Since 2008, the average manufacturer-sale price of PV modules has declined by over a factor of two, coinciding with a significant ...

  7. Soiling losses for solar photovoltaic systems in California

    E-Print Network [OSTI]

    Mejia, Felipe A; Kleissl, Jan

    2013-01-01T23:59:59.000Z

    accumulation of dust on solar panels that causes a decreasenecessity of cleaning solar panels in California. In Sectionand tilt angle of the solar panels. 2.2 Solar Conversion

  8. Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies

    E-Print Network [OSTI]

    Wang, Chunhua

    2011-01-01T23:59:59.000Z

    parts of the solar spectrum, the power output of the LSC PVson our lab. The power output of the solar simulator is aboutinput solar radiation, the higher the power output. Solar

  9. Solar Leasing for Residential Photovoltaic Systems (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-02-01T23:59:59.000Z

    This publication examines the solar lease option for residential PV systems and describes two solar lease programs already in place.

  10. Photovoltaic conversion in a common solar concentrating and spectrally splitting system

    SciTech Connect (OSTI)

    Yehezkel, N.; Appelbaum, J. [Tel-Aviv Univ. (Israel). Faculty of Engineering; Yogev, A. [Weizmann Inst. of Science, Rehovot (Israel)

    1994-12-31T23:59:59.000Z

    Several solar energy conversion processes can be utilized simultaneously using a common solar collector if the solar radiation is appropriately spectrally split. A concentrating and splitting system based on a Cassegrainian design may be used for photovoltaic energy conversion nd simultaneously for an additional energy conversion process such as for laser pumping that requires concentration. The spectral splitting may be achieved by a dichroic mirror for the secondary mirror of the Cassegrain. This approach was realized to study solar cells at different concentration, solar spectrum and temperatures.

  11. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT Thomas F.CENTRAL RECEIVER SOLAR THERMAL POWER SYSTEM, PHASE progressCorporation, RECEIVER SOLAR THERMAL POWER SYSTEM, PHASE I,

  12. Solar Electric & Heat System Training

    Broader source: Energy.gov [DOE]

    GRID Alternatives is holding a solar training in partnership with Trees, Water & People and Lakota Solar Enterprises. This 9-day training will include both classroom education and hands-on...

  13. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    solar PV power recognizing that it produces a disproportionate amount of its outputsolar power, because spatially distributed solar PV resources are not likely to have a high second-to-second correlation in output,Power from Solar PVs As with the solar PV production data, there are two conceptual approaches to valuing solar output

  14. Solar thermophotovoltaic efficiency potentials : surpassing photovoltaic device efficiencies

    E-Print Network [OSTI]

    Barnes, Kathryn M

    2012-01-01T23:59:59.000Z

    Solar energy has gained more attention in recent years due to increased concerns about the continued use of fossil fuels. Solar energy is a form of renewable energy, and solar energy technology does not release greenhouse ...

  15. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    that by turning the solar panels more towards the west,peak production from the solar panels can be more closelyproduction from these solar panels over the two- year period

  16. Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies

    E-Print Network [OSTI]

    Wang, Chunhua

    2011-01-01T23:59:59.000Z

    glass. . . 18 Figure 2.4: IV curve of a solar cell. . . . .+ 05, Ric06]. IV curve The IV curve of a solar cell is thesuperposition of the IV curve of the solar cell diode in the

  17. Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies

    E-Print Network [OSTI]

    Wang, Chunhua

    2011-01-01T23:59:59.000Z

    It is put on a solar tracker. . . . Figure 4.7: Steady stateIn the test, by using a solar tracker, we have been able toputting them on top of a solar tracker, we can easily change

  18. Report on Solar Water Heating Quantitative Survey

    SciTech Connect (OSTI)

    Focus Marketing Services

    1999-05-06T23:59:59.000Z

    This report details the results of a quantitative research study undertaken to better understand the marketplace for solar water-heating systems from the perspective of home builders, architects, and home buyers.

  19. Report on Solar Pool Heating Quantitative Survey

    SciTech Connect (OSTI)

    Synapse Infusion Group, Inc. (Westlake Village, California)

    1999-05-06T23:59:59.000Z

    This report details the results of a quantitative research study undertaken to better understand the marketplace for solar pool-heating systems from the perspective of residential pool owners.

  20. Solar energy storage through the homogeneous electrocatalytic reduction of carbon dioxide : photoelectrochemical and photovoltaic approaches

    E-Print Network [OSTI]

    Sathrum, Aaron John

    2011-01-01T23:59:59.000Z

    Powered Hydrogen Generation using Photovoltaic-ElectrolysisPowered Hydrogen Generation Using Photovoltaic?ElectrolysisPowered Hydrogen Production Using Photovoltaic Electrolysis

  1. Solar photovoltaic power system for a radio station

    SciTech Connect (OSTI)

    Nichols, B. E.

    1980-12-01T23:59:59.000Z

    Under sponsorship of the US Department of Energy, Massachusetts Institute of Technology Lincoln Laboratory has developed a concept for a small photovoltaic power system. Of simple construction, the system uses low-cost, prefabricated, transportable units for easy, fast installation and requires minimal site preparation. The first application of this experimental system began operation in August 1979 at daytime AM radio station WNBO in Bryan, Ohio. The project was jointly undertaken by the Laboratory and the radio station. The photovoltaic system described holds promise for a wide range of applications and economic feasibility by the mid- to late-1980s.

  2. Soiling losses for solar photovoltaic systems in California

    E-Print Network [OSTI]

    Mejia, Felipe A; Kleissl, Jan

    2013-01-01T23:59:59.000Z

    power output from 186 PV sites demonstrated how soiling decreases the efficiency of solarPower Output of Distributed PV Systems in California. Report to the California Solar

  3. Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies

    E-Print Network [OSTI]

    Wang, Chunhua

    2011-01-01T23:59:59.000Z

    Diaz, Chair Solar energy is a prominent renewable source ofalternative energy sources [Abb11]. Solar energy, radiantsolar energy will become a very prominent renewable source

  4. 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.

  5. 2644 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 55, NO. 7, JULY 2008 An Adaptive Solar Photovoltaic Array Using

    E-Print Network [OSTI]

    Lehman, Brad

    the effect of shadows on solar panels. A switching matrix connects a solar adaptive bank to a fixed part2644 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 55, NO. 7, JULY 2008 An Adaptive Solar of a solar photovoltaic (PV) array, according to a model-based control al- gorithm that increases the power

  6. Semiconductor Quantum Dots and Quantum Dot Arrays and Applications of Multiple Exciton Generation to Third-Generation Photovoltaic Solar Cells

    E-Print Network [OSTI]

    George, Steven C.

    to Third-Generation Photovoltaic Solar Cells A. J. Nozik,*,, M. C. Beard, J. M. Luther, M. Law,§ R. J. Applications: Quantum Dot Solar Cells 6884 6.1. Quantum Dot Solar Cell Configurations 6885 6.1.1. Photoelectrodes Composed of Quantum Dot Arrays 6885 6.1.2. Quantum Dot-Sensitized Nanocrystalline TiO2 Solar Cells

  7. SOLERAS - Photovoltaic Power Systems Project. Rural solar applications. Final report: project summary

    SciTech Connect (OSTI)

    Not Available

    1985-01-01T23:59:59.000Z

    The Saudi Solar Village Project photovoltaic system is described, consisting of 160 arrays, a computerized control system, 1100 kW of electrical storage in lead-acid batteries, and an automatic weather data gathering system. Satisfactory overall system performance is reported. Performance degradation due to dust on the array lenses was determined. Field operational problems are discussed. (LEW)

  8. A novel photovoltaic-module assembly system for back contact solar cells using laser soldering technique

    E-Print Network [OSTI]

    A novel photovoltaic-module assembly system for back contact solar cells using laser soldering that the conventional soldering process is still more reliable compared to conductive adhesives or low melting solder alloys. The aim of this work is to combine the reliability of the conventional module assembling

  9. See-through amorphous silicon solar cells with selectively transparent and conducting photonic crystal back reflectors for building integrated photovoltaics

    SciTech Connect (OSTI)

    Yang, Yang [The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Room GB254B, Toronto, Ontario M5S 3G4 (Canada)] [The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Room GB254B, Toronto, Ontario M5S 3G4 (Canada); O’Brien, Paul G. [Department of Materials Science and Engineering, University of Toronto, 184 College Street, Room 140, Toronto, Ontario M5S 3E4 (Canada) [Department of Materials Science and Engineering, University of Toronto, 184 College Street, Room 140, Toronto, Ontario M5S 3E4 (Canada); Materials Chemistry Research Group, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada); Ozin, Geoffrey A., E-mail: gozin@chem.utoronto.ca, E-mail: kherani@ecf.utoronto.ca [Materials Chemistry Research Group, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 (Canada); Kherani, Nazir P., E-mail: gozin@chem.utoronto.ca, E-mail: kherani@ecf.utoronto.ca [The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Room GB254B, Toronto, Ontario M5S 3G4 (Canada); Department of Materials Science and Engineering, University of Toronto, 184 College Street, Room 140, Toronto, Ontario M5S 3E4 (Canada)

    2013-11-25T23:59:59.000Z

    Thin semi-transparent hydrogenated amorphous silicon (a-Si:H) solar cells with selectively transparent and conducting photonic crystal (STCPC) back-reflectors are demonstrated. Short circuit current density of a 135?nm thick a-Si:H cell with a given STCPC back-reflector is enhanced by as much as 23% in comparison to a reference cell with an ITO film functioning as its rear contact. Concurrently, solar irradiance of 295?W/m{sup 2} and illuminance of 3480 lux are transmitted through the cell with a given STCPC back reflector under AM1.5 Global tilt illumination, indicating its utility as a source of space heating and lighting, respectively, in building integrated photovoltaic applications.

  10. RADIATIVE HEATING OF THE SOLAR CORONA

    SciTech Connect (OSTI)

    Moran, Thomas G., E-mail: moran@grace.nascom.nasa.gov [Physics Department, Catholic University of America, 200 Hannan Hall, Washington, DC 20064 (United States) and NASA/GSFC, Code 671, Greenbelt, MD 20771 (United States)

    2011-10-20T23:59:59.000Z

    We investigate the effect of solar visible and infrared radiation on electrons in the Sun's atmosphere using a Monte Carlo simulation of the wave-particle interaction and conclude that sunlight provides at least 40% and possibly all of the power required to heat the corona, with the exception of dense magnetic flux loops. The simulation uses a radiation waveform comprising 100 frequency components spanning the solar blackbody spectrum. Coronal electrons are heated in a stochastic manner by low coherence solar electromagnetic radiation. The wave 'coherence time' and 'coherence volume' for each component is determined from optical theory. The low coherence of solar radiation allows moving electrons to gain energy from the chaotic wave field which imparts multiple random velocity 'kicks' to these particles causing their velocity distribution to broaden or heat. Monte Carlo simulations of broadband solar radiative heating on ensembles of 1000 electrons show heating at per particle levels of 4.0 x 10{sup -21} to 4.0 x 10{sup -20} W, as compared with non-loop radiative loss rates of {approx}1 x 10{sup -20} W per electron. Since radiative losses comprise nearly all of the power losses in the corona, sunlight alone can explain the elevated temperatures in this region. The volume electron heating rate is proportional to density, and protons are assumed to be heated either by plasma waves or through collisions with electrons.

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

    E-Print Network [OSTI]

    Authors, Various

    2012-01-01T23:59:59.000Z

    indus- trial process heat, and solar. heating and coolingSolar Energy for Agricultural and Industrial Process Heat (and heat transfer processes which are appropriate to passive solar

  12. 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...

  13. 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...

  14. E-Print Network 3.0 - auxiliary heating Sample Search Results

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

    Photovoltaic Panels Summary: Heating System Preheat - Solar thermal 80-gal tank, electric auxiliary heating Active, indirect forced... heater w digital control panel Source:...

  15. Photovoltaic Performance and Reliability Database: A Gateway to Experimental Data Monitoring Projects for PV at the Florida Solar Energy Center

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

    This site is the gateway to experimental data monitoring projects for photovoltaic (PV) at the Florida Solar Energy Center. The website and the database were designed to facilitate and standardize the processes for archiving, analyzing and accessing data collected from dozens of operational PV systems and test facilities monitored by FSEC's Photovoltaics and Distributed Generation Division. [copied from http://www.fsec.ucf.edu/en/research/photovoltaics/data_monitoring/index.htm

  16. Rochester Public Utilities- Solar Rebate Program

    Broader source: Energy.gov [DOE]

    Rochester Public Utilities provides incentives for residential and commercial customers to install photovoltaic (PV) and solar water heating systems. Qualifying PV systems can earn $1 per watt...

  17. Owatanna Public Utilities- Solar Rebate Program

    Broader source: Energy.gov [DOE]

    Owatanna Public Utilities provides incentives for their residential and commercial customers to install photovoltaic (PV) and solar water heating systems. Qualifying PV systems can earn $1 per watt...

  18. Abstract-This paper proposes a neural network based approach to estimating the maximum possible output power of a solar photovoltaic

    E-Print Network [OSTI]

    Lehman, Brad

    on a shaded solar panel at different hours of a day for several days. After training the neural network, its, building-integrated photovoltaic panels, and portable solar tents, it is common for a solar PV to become output power of a solar photovoltaic array under the non-uniform shadow conditions at a given geographic

  19. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    the premium value of solar PV power to 0%-20% again. Whilepower to that location. While few dispute that the direct cost of electricity from the currently available solar

  20. Residential Solar Photovoltaics: Comparison of Financing Benefits, Innovations, and Options

    SciTech Connect (OSTI)

    Speer, B.

    2012-10-01T23:59:59.000Z

    This report examines relatively new, innovative financing methods for residential photovoltaics (PV) and compares them to traditional self-financing. It provides policymakers with an overview of the residential PV financing mechanisms, describes relative advantages and challenges, and analyzes differences between them where data is available. Because these innovative financing mechanisms have only been implemented in a few locations, this report can inform their wider adoption.

  1. Homebuilder's Guide to Going Solar (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2008-12-01T23:59:59.000Z

    This 8-page brochure describes the steps a builder would take to install solar electricity (photovoltaics or PV), solar water heating, or how to build a home solar ready.

  2. THE PERFORMANCE OF THIN FILM SOLAR CELLS EMPLOYING PHOTOVOLTAIC Cu22014x Te-CdTe HETEROJUNCTIONS (1)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    195 THE PERFORMANCE OF THIN FILM SOLAR CELLS EMPLOYING PHOTOVOLTAIC Cu22014x Te This paper is a short status report on the continuing development of Cu22014xTe-CdTe thin film solar cells Company has had a conti- nuous effort on thin film solar cells for the past four and a half years

  3. The Impact Snow Has on Solar Energy Production: A case study of the Morley photovoltaic array and the necessity for

    E-Print Network [OSTI]

    Aalberts, Daniel P.

    Williams 1 The Impact Snow Has on Solar Energy Production: A case study of the Morley photovoltaic Williams 5/19/09 GEOS 206 Final Project Paper #12;Williams 2 Introduction Solar energy has long seemed one , solar cells were barely capable of converting energy at 1% efficiency (NREL). Needless to say

  4. Yolo County, California, made history in July when officials installed a 1 MW solar photovoltaic (PV) project to supply power

    E-Print Network [OSTI]

    Yolo County, California, made history in July when officials installed a 1 MW solar photovoltaic both buildings in Woodland, California, for the 1 MW ground-mounted solar PV system. Energy Analysis by examining the feasibility of installing a solar system, according to information provided by Ray Groom

  5. EVALUATION OF FLAT-PLATE PHOTOVOLTAIC THERMAL HYBRID SYSTEMS FOR SOLAR ENERGY UTILIZATION.

    SciTech Connect (OSTI)

    ANDREWS,J.W.

    1981-06-01T23:59:59.000Z

    The technical and economic attractiveness of combined photovoltaic/thermal (PV/T) solar energy collectors was evaluated. The study was limited to flat-plate collectors since concentrating photovoltaic collectors require active cooling and thus are inherently PV/T collectors, the only decision being whether to use the thermal energy or to dump it. it was also specified at the outset that reduction in required roof area was not to be used as an argument for combining the collection of thermal and electrical energy into one module. Three tests of economic viability were identified, all of which PV/T must pass if it is to be considered a promising alternative: PV/T must prove to be competitive with photovoltaic-only, thermal-only, and side-by-side photovoltaic-plus-thermal collectors and systems. These three tests were applied to systems using low-temperature (unglazed) collectors and to systems using medium-temperature (glazed) collectors in Los Angeles, New York, and Tampa. For photovoltaics, the 1986 DOE cost goals were assumed to have been realized, and for thermal energy collection two technologies were considered: a current technology based on metal and glass, and a future technology based on thin-film plastics. The study showed that for medium-temperature applications PV/T is not an attractive option in any of the locations studied. For low-temperature applications, PV/T appears to be marginally attractive.

  6. 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...

  7. Solar Power: Using Photovoltaics to Preserve California's Electricity Capacity Reserves

    SciTech Connect (OSTI)

    Herig, C..

    2001-09-01T23:59:59.000Z

    The California Power Authority (CPA) is committed to increasing the use of renewable energy supplies--such as photovoltaics and wind--as a hedge against price fluctuations of electricity and natural gas. The CPA wants to own and operate an adequate supply of reserve generation that: - Can be deployed quickly in response to severe summer peak loads, unexpected loss of base and intermediate generation units, and failure of critical transmission facilities; - Will minimize the reliance on spot market purchases during periods when the State is most vulnerable to price gouging from private generators.

  8. Solar Junction Develops World Record Setting Concentrated Photovoltaic...

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

    startup companies cross technological barriers to commercialization while encouraging private investment. The Solar Energy Technologies Office focuses on achieving the goals of...

  9. Solar Photovoltaic Financing: Deployment on Public Property by...

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

    California Public Utilities Commission CREB Clean renewable energy bonds CSI California Solar Initiative DG Distributed generation DIA Denver International Airport DOE U.S....

  10. Soiling losses for solar photovoltaic systems in California

    E-Print Network [OSTI]

    Mejia, Felipe A; Kleissl, Jan

    2013-01-01T23:59:59.000Z

    n efficiency and daily rainfall for a 554 kW dc PV plant inPV sites demonstrated how soiling decreases the efficiency of solar PV plants.

  11. 5 Cool Things about Solar Heating | Department of Energy

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

    or deductions for solar energy systems. Solar heating systems reduce the amount of air pollution and greenhouse gases that generally come from the use of fossil fuels for...

  12. 19th European Photovoltaic Solar Energy Conference Pre-Print 4AV.1.45 QUANTUM EFFICIENCY OF CdTe SOLAR CELLS IN FORWARD BIAS

    E-Print Network [OSTI]

    Sites, James R.

    19th European Photovoltaic Solar Energy Conference Pre-Print 4AV.1.45 QUANTUM EFFICIENCY OF CdTe SOLAR CELLS IN FORWARD BIAS M. Gloeckler and J. R. Sites Department of Physics, Colorado State@lamar.colostate.edu ABSTRACT: When the quantum efficiency of a CdS/CdTe solar cell is measured under forward voltage

  13. 24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, Sept. 2009 HIGLY PREDICTIVE MODELLING OF ENTIRE SI SOLAR CELLS FOR INDUSTRIAL APPLICATIONS

    E-Print Network [OSTI]

    On leave from: Institute for Solar Energy Systems, Sun Yat-Sen University, 510006, Guangzhou, China24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, Sept. 2009 1 HIGLY PREDICTIVE MODELLING OF ENTIRE SI SOLAR CELLS FOR INDUSTRIAL APPLICATIONS P.P. Altermatt,1,2 S. Steingrube,1,2 Y. Yang

  14. Solar heat storages in district heating Klaus Ellehauge Thomas Engberg Pedersen

    E-Print Network [OSTI]

    July 2007 . #12;#12;Solar heat storages in district heating networks July 2007 Klaus Ellehauge 97 22 11 tep@cowi.dk www.cowi.com #12;#12;Solar heat storages in district heating networks 5 in soil 28 5.3 Other experienced constructions: 30 6 Consequences of establishing solar heat in CHP areas

  15. A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System

    E-Print Network [OSTI]

    Norwood, Zachary Mills

    2011-01-01T23:59:59.000Z

    Concentrating Solar Combined Heat and Power Systemfor Distributed Concentrating Solar Combined Heat and Powerin parabolic trough solar power technology. Journal of Solar

  16. Proceedings of the flat-plate solar array project research forum on photovoltaic metallization systems

    SciTech Connect (OSTI)

    None

    1983-11-15T23:59:59.000Z

    A Photovoltaic Metallization Research Forum, under the sponsorship of the Jet Propulsion Laboratory's Flat-Plate Solar Array Project and the US Department of Energy, was held March 16-18, 1983 at Pine Mountain, Georgia. The Forum consisted of five sessions, covering (1) the current status of metallization systems, (2) system design, (3) thick-film metallization, (4) advanced techniques and (5) future metallization challenges. Twenty-three papers were presented.

  17. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    for efficient photovoltaic cells, Nat. Nanotechnol. 6, 568-for efficient photovoltaic cells, Nat. Nanotechnol. 6, 568-trapping in thin-film photovoltaic cells, Opt. Express 8,

  18. Solar energy storage through the homogeneous electrocatalytic reduction of carbon dioxide : photoelectrochemical and photovoltaic approaches

    E-Print Network [OSTI]

    Sathrum, Aaron John

    2011-01-01T23:59:59.000Z

    Hydrogen Generation using Photovoltaic-Electrolysis Devices.6128-6141. Gratzel, M. Photovoltaic and PhotoelectrochemicalHydrogen Generation Using Photovoltaic?Electrolysis Devices.

  19. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    for ultrahigh-efficiency photovoltaics, Nat. Mater. 11, 174-devices towards high-efficiency photovoltaics”, 39th IEEEto ensure high-efficiency nanostructured photovoltaics: each

  20. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    intervention. The huge subsidies that fossil fuel companiessubsidies or recognition of environmental externalities from fossil fuels)subsidies targeted speci?cally at installation of solar PV. The fact that fossil fuel

  1. Soiling losses for solar photovoltaic systems in California

    E-Print Network [OSTI]

    Mejia, Felipe A; Kleissl, Jan

    2013-01-01T23:59:59.000Z

    the fall restore the t PV plant t to the effic ciency observrainfall for a 554 kW dc PV plant in Hanford H Kin ngs, CAthe efficiency of solar PV plants. The accumulated soiling

  2. Modeling Photovoltaic and Concentrating Solar Power Trough Performance, Cost, and Financing with the Solar Advisor Model: Preprint

    SciTech Connect (OSTI)

    Blair, N.; Mehos, M.; Christensen, C.; Cameron, C.

    2008-05-01T23:59:59.000Z

    A comprehensive solar technology systems analysis model, the Solar Advisor Model (SAM), has been developed to support the federal R&D community and the solar industry by staff at the National Renewable Energy Laboratory (NREL) and Sandia National Laboratory. This model is able to model the finances, incentives, and performance of flat-plate photovoltaic (PV), concentrating PV, and concentrating solar power (specifically, parabolic troughs). The primary function of the model is to allow users to investigate the impact of variations in performance, cost, and financial parameters to better understand their impact on key figures of merit. Figures of merit related to the cost and performance of these systems include, but aren't limited to, system output, system efficiencies, levelized cost of energy, return on investment, and system capital and O&M costs. There are several models within SAM to model the performance of photovoltaic modules and inverters. This paper presents an overview of each PV and inverter model, introduces a new generic model, and briefly discusses the concentrating solar power (CSP) parabolic trough model. A comparison of results using the different PV and inverter models is also presented.

  3. Periodically multilayered planar optical concentrator for photovoltaic solar cells Manuel E. Solano, Muhammad Faryad, Peter B. Monk, Thomas E. Mallouk, and Akhlesh Lakhtakia

    E-Print Network [OSTI]

    Periodically multilayered planar optical concentrator for photovoltaic solar cells Manuel E. Solano concentrator for photovoltaic solar cells Manuel E. Solano,1 Muhammad Faryad,2 Peter B. Monk,1 Thomas E-Si solar cells due to embedded nanoparticles J. Appl. Phys. 102, 093713 (2007); 10.1063/1.2809368 Surface

  4. Solar Photovoltaic Financing: Deployment on Public Property by State and

    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 SolarPV Incentive Programs Solar

  5. Photovoltaic-thermal collectors

    DOE Patents [OSTI]

    Cox, III, Charles H. (Carlisle, MA)

    1984-04-24T23:59:59.000Z

    A photovoltaic-thermal solar cell including a semiconductor body having antireflective top and bottom surfaces and coated on each said surface with a patterned electrode covering less than 10% of the surface area. A thermal-absorbing surface is spaced apart from the bottom surface of the semiconductor and a heat-exchange fluid is passed between the bottom surface and the heat-absorbing surface.

  6. Lessons Learned: Devolping Thermochemical Cycles for Solar Heat...

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

    Heat Storage Applications Lessons Learned: Devolping Thermochemical Cycles for Solar Heat Storage Applications This presentation summarizes the introduction given by Bunsen...

  7. Rechargeable Heat Battery's Secret Revealed: Solar Energy Capture...

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

    Rechargeable Heat Battery Rechargeable Heat Battery's Secret Revealed Solar energy capture in chemical form makes it storable and transportable January 11, 2011 | Tags: Chemistry,...

  8. Tidal Heating of Extra-Solar Planets

    E-Print Network [OSTI]

    Brian Jackson; Richard Greenberg; Rory Barnes

    2008-02-29T23:59:59.000Z

    Extra-solar planets close to their host stars have likely undergone significant tidal evolution since the time of their formation. Tides probably dominated their orbital evolution once the dust and gas had cleared away, and as the orbits evolved there was substantial tidal heating within the planets. The tidal heating history of each planet may have contributed significantly to the thermal budget that governed the planet's physical properties, including its radius, which in many cases may be measured by observing transit events. Typically, tidal heating increases as a planet moves inward toward its star and then decreases as its orbit circularizes. Here we compute the plausible heating histories for several planets with measured radii, using the same tidal parameters for the star and planet that had been shown to reconcile the eccentricity distribution of close-in planets with other extra-solar planets. Several planets are discussed, including for example HD 209458 b, which may have undergone substantial tidal heating during the past billion years, perhaps enough to explain its large measured radius. Our models also show that GJ 876 d may have experienced tremendous heating and is probably not a solid, rocky planet. Theoretical models should include the role of tidal heating, which is large, but time-varying.

  9. Incorporation of NREL Solar Advisor Model Photovoltaic Capabilities with GridLAB-D

    SciTech Connect (OSTI)

    Tuffner, Francis K.; Hammerstrom, Janelle L.; Singh, Ruchi

    2012-10-19T23:59:59.000Z

    This report provides a summary of the work updating the photovoltaic model inside GridLAB-D. The National Renewable Energy Laboratory Solar Advisor Model (SAM) was utilized as a basis for algorithms and validation of the new implementation. Subsequent testing revealed that the two implementations are nearly identical in both solar impacts and power output levels. This synergized model aides the system-level impact studies of GridLAB-D, but also allows more specific details of a particular site to be explored via the SAM software.

  10. Solar Photovoltaic Economic Development: Building and Growing a Local PV Industry, August 2011 (Book)

    SciTech Connect (OSTI)

    Not Available

    2011-08-01T23:59:59.000Z

    The U.S. photovoltaic (PV) industry is forecast to grow, and it represents an opportunity for economic development and job creation in communities throughout the United States. This report helps U.S. cities evaluate economic opportunities in the PV industry. It serves as a guide for local economic development offices in evaluating their community?s competitiveness in the solar PV industry, assessing the viability of solar PV development goals, and developing strategies for recruiting and retaining PV companies to their areas.

  11. Solar Water Heating with Low-Cost Plastic Systems (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2012-01-01T23:59:59.000Z

    Newly developed solar water heating technology can help Federal agencies cost effectively meet the EISA requirements for solar water heating in new construction and major renovations. This document provides design considerations, application, economics, and maintenance information and resources.

  12. City of Sunset Valley- Solar Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    The City of Sunset Valley offers rebates to local homeowners who install solar water heating systems on their properties. The local rebate acts as an add-on to the solar water heating rebates that...

  13. DEVELOPMENT OF SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS

    E-Print Network [OSTI]

    Dao, K.

    2013-01-01T23:59:59.000Z

    SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS K.Driven Absorption Air-Conditioner", K. Dao, M. Simmons, R.SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS* K.

  14. Value of solar thermal industrial process heat

    SciTech Connect (OSTI)

    Brown, D.R.; Fassbender, L.L.; Chockie, A.D.

    1986-03-01T23:59:59.000Z

    This study estimated the value of solar thermal-generated industrial process heat (IPH) as a function of process heat temperature. The value of solar thermal energy is equal to the cost of producing energy from conventional fuels and equipment if the energy produced from either source provides an equal level of service. This requirement put the focus of this study on defining and characterizing conventional process heat equipment and fuels. Costs (values) were estimated for 17 different design points representing different combinations of conventional technologies, temperatures, and fuels. Costs were first estimated for median or representative conditions at each design point. The cost impact of capacity factor, efficiency, fuel escalation rate, and regional fuel price differences were then evaluated by varying each of these factors within credible ranges.

  15. Wave Heating of the Solar Atmosphere

    E-Print Network [OSTI]

    Arregui, I

    2015-01-01T23:59:59.000Z

    Magnetic waves are a relevant component in the dynamics of the solar atmosphere. Their significance has increased because of their potential as a remote diagnostic tool and their presumed contribution to plasma heating processes. We discuss our current understanding on coronal heating by magnetic waves, based on recent observational evidence and theoretical advances. The discussion starts with a selection of observational discoveries that have brought magnetic waves to the forefront of the coronal heating discussion. Then, our theoretical understanding on the nature and properties of the observed waves and the physical processes that have been proposed to explain observations are described. Particular attention is given to the sequence of processes that link observed wave characteristics with concealed energy transport, dissipation, and heat conversion. We conclude with a commentary on how the combination of theory and observations should help us understanding and quantifying magnetic wave heating of the sola...

  16. Letting the Sun Shine on Solar Costs: An Empirical Investigation of Photovoltaic Cost Trends in California

    SciTech Connect (OSTI)

    Wiser, R.; Bolinger, M.; Cappers, P.; Margolis, R.

    2006-01-01T23:59:59.000Z

    This report provides a comprehensive analysis of grid-connected solar photovoltaic (PV) cost trends in California, which is by far the largest PV market in the United States. The findings of this work may help stakeholders to understand important trends in the California PV market, and policymakers to design more effective solar incentive programs--a particularly important objective given the recent announcement from the California Public Utilities Commission (CPUC) to establish an 11-year, $3.2 billion incentive program for customer-sited solar. The study statistically analyzes the installed cost of grid-connected PV systems funded by the state's two largest solar rebate programs, overseen by the California Energy Commission (CEC) [operating since 1998] and the CPUC [operating since 2001].

  17. Solar-Assisted Technology Provides Heat for California Industries

    E-Print Network [OSTI]

    Solar-Assisted Technology Provides Heat for California Industries Industrial/Agriculture/Water End 2011 The Issue Solar thermal technology focuses the Sun's rays to heat water, and is a promising renewable resource for California's industrial sector. Commercially available solar water heating

  18. Experimental Research on Solar Assisted Heat Pump Heating System with Latent Heat Storage

    E-Print Network [OSTI]

    Han, Z.; Zheng, M.; Liu, W.; Wang, F.

    2006-01-01T23:59:59.000Z

    -reaching meaning of solving energy and environment problems if new type energy conservation and environment protection heating system ? solar assisted ground-source heat pump (SAGHP) heating system with a latent heat storage tank will be practical... was established at the laboratory of construction energy conservation in Harbin Institute of Technology (HIT) in 2004. It added a latent heat storage tank in original SAGHP system. The schematic diagram of the system is shown in Figure 1. The experimental...

  19. Maximally concentrating optics for photovoltaic solar energy conversion

    SciTech Connect (OSTI)

    O'Gallagher, J.J.

    1985-03-07T23:59:59.000Z

    Use of a two-stage concentrator with a fresnel lens primary and a nonimaging dielectric totally internally reflecting secondary, has unique advantages for photovoltaic concentration. Some preliminary ray trace studies have shown that with planar lenses, an increase in angular acceptance for a given geometric concentration to about 2/3 of the maximum theoretical limit can be achieved. To demonstrate this, two preprototype concentrators, each having a geometric concentration of 248:1 for a 0.635cm (0.25 inch) diameter cell, have been designed, built, and tested. Measurements of the angular response show an acceptance of 8[degrees] (full angle) which is drastically better than the 1[degrees]--2[degrees] achievable without a secondary, and is in excellent agreement with the ray trace predictions. For these preprototypes, passive cooling was sufficient to prevent any thermal problems for both the cell and secondary. No problems associated with nouuniform cell illumination were found, as evidenced by the fill factor of 71%--73% measured under concentration. Initial measurements of the system electrical efficiency lie in the range 7.5%--9.9% for a variety of individual cells.

  20. EELE408 Photovoltaics Lecture 11: Solar Cell Parameters

    E-Print Network [OSTI]

    Kaiser, Todd J.

    mV ­ Commercial silicon solar cells 500-600 mV 11 Power & IV Curve · Power (Watts) is the rate · The power output by a source is the product of the current supplied and the voltage at which the current was supplied 12 · Power output = Source voltage x Source current ­ P=V x I (Watts = Joules/second) = (Volts

  1. The Market Value and Cost of Solar Photovoltaic Electricity Production

    E-Print Network [OSTI]

    Borenstein, Severin

    2008-01-01T23:59:59.000Z

    the produc- tion of solar PV panels at hourly prices is muchsolar PV installation is equivalent to purchasing each MWh over the life of the panels at a constant real pricesolar panels over the two- year period are worth an average of $61.11/MWh when valued at the hourly systemwide price

  2. DOE Solar Energy Technologies Program: Overview and Highlights

    SciTech Connect (OSTI)

    Not Available

    2006-05-01T23:59:59.000Z

    A non-technical overview of the U.S. Department of Energy's Solar Energy Technologies Program, including sections on photovoltaics (PV), concentrating solar power, and solar heating and lighting R&D.

  3. Photovoltaics information user study

    SciTech Connect (OSTI)

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

    1980-10-01T23:59:59.000Z

    The results of a series of telephone interviews with groups of users of information on photovoltaics (PV) are described. These results, part of a larger study on many different solar technologies, identify types of information each group needed and the best ways to get information to each group. The report is 1 of 10 discussing study results. The overall study provides baseline data about information needs in the solar community. It covers these technological areas: photovoltaics, passive solar heating and cooling, active solar heating and cooling, biomass energy, solar thermal electric power, solar industrial and agricultural process heat, wind energy, ocean energy, and advanced energy storage. 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 seven PV groups respondents are analyzed in this report: DOE-Funded Researchers, Non-DOE-Funded Researchers, Researchers Working for Manufacturers, Representatives of Other Manufacturers, Representatives of Utilities, Electric Power Engineers, and Educators.

  4. High Efficiency Nanostructured III-V Photovoltaics for Solar Concentrator Application

    SciTech Connect (OSTI)

    Hubbard, Seth

    2012-09-12T23:59:59.000Z

    The High Efficiency Nanostructured III-V Photovoltaics for Solar Concentrators project seeks to provide new photovoltaic cells for Concentrator Photovoltaics (CPV) Systems with higher cell efficiency, more favorable temperature coefficients and less sensitivity to changes in spectral distribution. The main objective of this project is to provide high efficiency III-V solar cells that will reduce the overall cost per Watt for power generation using CPV systems.This work is focused both on a potential near term application, namely the use of indium arsenide (InAs) QDs to spectrally "tune" the middle (GaAs) cell of a SOA triple junction device to a more favorable effective bandgap, as well as the long term goal of demonstrating intermediate band solar cell effects. The QDs are confined within a high electric field i-region of a standard GaAs solar cell. The extended absorption spectrum (and thus enhanced short circuit current) of the QD solar cell results from the increase in the sub GaAs bandgap spectral response that is achievable as quantum dot layers are introduced into the i-region. We have grown InAs quantum dots by OMVPE technique and optimized the QD growth conditions. Arrays of up to 40 layers of strain balanced quantum dots have been experimentally demonstrated with good material quality, low residual stain and high PL intensity. Quantum dot enhanced solar cells were grown and tested under simulated one sun AM1.5 conditions. Concentrator solar cells have been grown and fabricated with 5-40 layers of QDs. Testing of these devices show the QD cells have improved efficiency compared to baseline devices without QDs. Device modeling and measurement of thermal properties were performed using Crosslight APSYS. Improvements in a triple junction solar cell with the insertion of QDs into the middle current limiting junction was shown to be as high as 29% under one sun illumination for a 10 layer stack QD enhanced triple junction solar cell. QD devices have strong potential for net gains in efficiency at high concentration.

  5. Photovoltaic Energy Conversion

    E-Print Network [OSTI]

    Glashausser, Charles

    Photovoltaic Energy Conversion Frank Zimmermann #12;Solar Electricity Generation Consumes no fuel Make solar cells more efficient Theoretical energy conversion efficiency limit of single junction warming and fossil fuel depletion problems! #12;Photovoltaics: Explosive Growth Sustained growth of 30

  6. Solar Photovoltaic Financing: Deployment by Federal Government Agencies

    SciTech Connect (OSTI)

    Cory, K.; Coggeshall, C.; Coughlin, J.; Kreycik, C.

    2009-07-01T23:59:59.000Z

    The goal of this report is to examine how federal agencies can finance on-site PV projects. It explains state-level cash incentives available, the importance of solar renewable energy certificate revenues (in certain markets), existing financing structures, as well as innovative financing structures being used by federal agencies to deploy on-site PV. Specific examples from the DOD, DOE, and other federal agencies are highlighted to explain federal project financing in detail.

  7. Solar Junction Develops World Record Setting Concentrated Photovoltaic

    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 ResponseStaffServicesFutureU.S.Solar Cell | Department of

  8. Solar Photovoltaic Financing: Residential Sector Deployment | 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 RankCombustion |Energy Usage » SearchEnergyDepartmentScoping Study |4 SolarPV Incentive Programs

  9. AWSWAH - the heat pipe solar water heater

    SciTech Connect (OSTI)

    Akyurt, M.

    1986-01-01T23:59:59.000Z

    An all weather heat pipe solar water heater (AWSWAH) comprising a collector of 4 m/sup 2/ (43 ft/sup 2/) and a low profile water tank of 160 liters (42 gal.) was developed. A single heat pipe consisting of 30 risers and two manifolds in the evaporator and a spiral condenser was incorporated into the AWSWAH. Condensate metering was done by synthetic fiber wicks. The AWSWAH was tested alongside two conventional solar water heaters of identical dimensions, an open loop system and a closed loop system. It was found that the AWSWAH was an average of 50% more effective than the open system in the temperature range 30-90 /sup 0/C (86-194 /sup 0/F). The closed loop system was the least efficient of the three systems.

  10. Photovoltaics (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 within its photovoltaics subprogram.

  11. Photovoltaics (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-06-01T23:59:59.000Z

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

  12. SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT

    E-Print Network [OSTI]

    Baldwin, Thomas F.

    2011-01-01T23:59:59.000Z

    process configurations for solar power plants with sensible-heatsolar power plant with sensible-heat storage since the chemical~heat storage processsolar power plant with a sulfur-oxide storage process. chemical~heat

  13. 2009 Technical Risk and Uncertainty Analysis of the U.S. Department of Energy's Solar Energy Technologies Program Concentrating Solar Power and Photovoltaics R&D

    SciTech Connect (OSTI)

    McVeigh, J.; Lausten, M.; Eugeni, E.; Soni, A.

    2010-11-01T23:59:59.000Z

    The U.S. Department of Energy (DOE) Solar Energy Technologies Program (SETP) conducted a 2009 Technical Risk and Uncertainty Analysis to better assess its cost goals for concentrating solar power (CSP) and photovoltaic (PV) systems, and to potentially rebalance its R&D portfolio. This report details the methodology, schedule, and results of this technical risk and uncertainty analysis.

  14. Feasibility Study of Solar Photovoltaics on Landfills in Puerto Rico (Second Study)

    SciTech Connect (OSTI)

    Salasovich, J.; Mosey, G.

    2011-08-01T23:59:59.000Z

    This report presents the results of an assessment of the technical and economic feasibility of deploying a solar photovoltaics (PV) system on landfill sites in Puerto Rico. The purpose of this report is to assess the landfills with the highest potential for possible solar PV installation and estimate cost, performance, and site impacts of three different PV options: crystalline silicon (fixed tilt), crystalline silicon (single-axis tracking), and thin film (fixed tilt). The report outlines financing options that could assist in the implementation of a system. According to the site production calculations, the most cost-effective system in terms of return on investment is the thin-film fixed-tilt technology. The report recommends financing options that could assist in the implementation of such a system. The landfills and sites considered in this report were all determined feasible areas in which to implement solar PV systems.

  15. Hybrid solar thermal-photovoltaic systems demonstration, Phase I and II. Final technical progress report, July 5, 1979-December 1982

    SciTech Connect (OSTI)

    Loferski, J.J. (ed.)

    1983-12-01T23:59:59.000Z

    The purpose of the project is to investigate a system based on combined photovoltaic/thermal (PV/T) panels to supply the energy needs of a small single family residence. The system finally selected and constructed uses PV/T panels which utilize air as the heat transfer medium. Optimization of thermal performance was accomplished by attaching metal fins to the back surface of each cell which significantly increased the heat transfer coefficient from the solar cells to the air stream. The other major components of the selected system are an air-to-air heat pump, a rock bin thermal energy storage bin, a synchronous dc-to-ac converter, a microprocessor to control the system, a heat exchanger for the domestic hot water system and of course the building itself which is a one story, well insulated structure having a floor area of 1200 ft/sup 2/. A prototype collector was constructed and tested. Based on this experience, twenty collectors, containing 2860 four inch diameter solar cells, were constructed and installed on the building. Performance of the system was simulated using a TRNSYS-derived program, modified to accommodate PV/T panels and to include the particular components included in the selected system. Simulation of the performance showed that about 65 percent of the total annual energy needs of the building would be provided by the PV/T system. Of this total, about one half is produced at a time when it can be used in the building and one half must be sold back to the utility.

  16. Photovoltaic properties and morphology of organic solar cells based on liquid-crystal semiconducting polymer with additive

    SciTech Connect (OSTI)

    Suzuki, Atsushi; Zushi, Masahito; Suzuki, Hisato; Ogahara, Shinichi; Akiyama, Tsuyoshi; Oku, Takeo [Department of Materials Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga 522-8533 (Japan)

    2014-02-20T23:59:59.000Z

    Bulk heterojunction organic solar cell based on liquid crystal semiconducting polymers of poly[9,9-dioctylfluorene-co-bithiophene] (F8T2) as p-type semiconductors and fullerenes (C{sub 60}) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as electron donor and acceptor has been fabricated and characterized for improving photovoltaic and optical properties. The photovoltaic performance including current voltage curves in the dark and illumination of the F8T2/C{sub 60} conventional and inverted bulk heterojunction solar cells were investigated. Relationship between the photovoltaic properties and morphological behavior was focused on tuning for optimization of photo-voltaic performance under annealing condition near glass transition temperature. Additive-effect of diiodooctane (DIO) and poly(3-hexylthiophene-2,5-diyl) (P3HT) on the photovoltaic performance and optical properties was investigated. Mechanism of the photovoltaic properties of the conventional and inverted solar cells will be discussed by the experimental results.

  17. Heat extraction from salinity-gradient solar ponds using heat pipe heat exchangers

    SciTech Connect (OSTI)

    Tundee, Sura; Terdtoon, Pradit; Sakulchangsatjatai, Phrut [Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200 (Thailand); Singh, Randeep; Akbarzadeh, Aliakbar [Energy Conservation and Renewable Energy Group, School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University, Bundoora East Campus, Bundoora, Victoria 3083 (Australia)

    2010-09-15T23:59:59.000Z

    This paper presents the results of experimental and theoretical analysis on the heat extraction process from solar pond by using the heat pipe heat exchanger. In order to conduct research work, a small scale experimental solar pond with an area of 7.0 m{sup 2} and a depth of 1.5 m was built at Khon Kaen in North-Eastern Thailand (16 27'N102 E). Heat was successfully extracted from the lower convective zone (LCZ) of the solar pond by using a heat pipe heat exchanger made from 60 copper tubes with 21 mm inside diameter and 22 mm outside diameter. The length of the evaporator and condenser section was 800 mm and 200 mm respectively. R134a was used as the heat transfer fluid in the experiment. The theoretical model was formulated for the solar pond heat extraction on the basis of the energy conservation equations and by using the solar radiation data for the above location. Numerical methods were used to solve the modeling equations. In the analysis, the performance of heat exchanger is investigated by varying the velocity of inlet air used to extract heat from the condenser end of the heat pipe heat exchanger (HPHE). Air velocity was found to have a significant influence on the effectiveness of heat pipe heat exchanger. In the present investigation, there was an increase in effectiveness by 43% as the air velocity was decreased from 5 m/s to 1 m/s. The results obtained from the theoretical model showed good agreement with the experimental data. (author)

  18. Anisotropic turbulent model for solar coronal heating

    E-Print Network [OSTI]

    B. Bigot; S. Galtier; H. Politano

    2007-12-12T23:59:59.000Z

    Context : We present a self-consistent model of solar coronal heating, originally developed by Heyvaert & Priest (1992), in which we include the dynamical effect of the background magnetic field along a coronal structure by using exact results from wave MHD turbulence (Galtier et al. 2000). Aims : We evaluate the heating rate and the microturbulent velocity for comparison with observations in the quiet corona, active regions and also coronal holes. Methods :The coronal structures are assumed to be in a turbulent state maintained by the slow erratic motions of the magnetic footpoints. A description for the large-scale and the unresolved small-scale dynamics are given separately. From the latter, we compute exactly (or numerically for coronal holes) turbulent viscosites that are finally used in the former to close self-consistently the system and derive the heating flux expression. Results : We show that the heating rate and the turbulent velocity compare favorably with coronal observations. Conclusions : Although the Alfven wave turbulence regime is strongly anisotropic, and could reduce a priori the heating efficiency, it provides an unexpected satisfactory model of coronal heating for both magnetic loops and open magnetic field lines.

  19. Low-Cost Photovoltaics: Luminescent Solar Concentrators And Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01T23:59:59.000Z

    1.6 Schematic of a solar panel with PV cells connected inand installation cost of solar panels and enhance PV cell1.6 Schematic of a solar panel with PV cells connected in

  20. Feasibility Study of Economics and Performance of Solar Photovoltaics in Nitro, West Virginia

    SciTech Connect (OSTI)

    Lisell, L.; Mosey, G.

    2010-08-01T23:59:59.000Z

    The study described in this report assessed brownfield sites designated by the City of Nitro, West Virginia for solar photovoltaic (PV) installations. The study analyzed three different types of PV systems for eight sites. The report estimates the cost, performance, and site impacts of thin film technology and crystalline silicon panels (both fixed-axis tracking and single-axis tracking systems). Potential job creation and electrical rate increases were also considered, and the report recommends financing options that could assist in the implementation of a system.

  1. Next-Generation Photovoltaic Technologies

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

    Next-Generation Photovoltaic Technologies Next-Generation Photovoltaic Technologies Print Monday, 06 February 2012 15:48 Organic solar cells based on the polymerfullerene bulk...

  2. Sandia National Laboratories: Photovoltaic Systems Evaluation...

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

    Energy On May 1, 2013, in DETL, Energy, Facilities, News, News & Events, Photovoltaic, Photovoltaic Systems Evaluation Laboratory (PSEL), Renewable Energy, Solar, Solar...

  3. Utility-Scale Concentrating Solar Power and Photovoltaic Projects: A Technology and Market Overview

    SciTech Connect (OSTI)

    Mendelsohn, M.; Lowder, T.; Canavan, B.

    2012-04-01T23:59:59.000Z

    Over the last several years, solar energy technologies have been, or are in the process of being, deployed at unprecedented levels. A critical recent development, resulting from the massive scale of projects in progress or recently completed, is having the power sold directly to electric utilities. Such 'utility-scale' systems offer the opportunity to deploy solar technologies far faster than the traditional 'behind-the-meter' projects designed to offset retail load. Moreover, these systems have employed significant economies of scale during construction and operation, attracting financial capital, which in turn can reduce the delivered cost of power. This report is a summary of the current U.S. utility-scale solar state-of-the-market and development pipeline. Utility-scale solar energy systems are generally categorized as one of two basic designs: concentrating solar power (CSP) and photovoltaic (PV). CSP systems can be further delineated into four commercially available technologies: parabolic trough, central receiver (CR), parabolic dish, and linear Fresnel reflector. CSP systems can also be categorized as hybrid, which combine a solar-based system (generally parabolic trough, CR, or linear Fresnel) and a fossil fuel energy system to produce electric power or steam.

  4. Statistical Characterization of Solar Photovoltaic Power Variability at Small Timescales: Preprint

    SciTech Connect (OSTI)

    Shedd, S.; Hodge, B.-M.; Florita, A.; Orwig, K.

    2012-08-01T23:59:59.000Z

    Integrating large amounts of variable and uncertain solar photovoltaic power into the electricity grid is a growing concern for power system operators in a number of different regions. Power system operators typically accommodate variability, whether from load, wind, or solar, by carrying reserves that can quickly change their output to match the changes in the solar resource. At timescales in the seconds-to-minutes range, this is known as regulation reserve. Previous studies have shown that increasing the geographic diversity of solar resources can reduce the short term-variability of the power output. As the price of solar has decreased, the emergence of very large PV plants (greater than 10 MW) has become more common. These plants present an interesting case because they are large enough to exhibit some spatial smoothing by themselves. This work examines the variability of solar PV output among different arrays in a large ({approx}50 MW) PV plant in the western United States, including the correlation in power output changes between different arrays, as well as the aggregated plant output, at timescales ranging from one second to five minutes.

  5. Thermal Solar Energy Systems for Space Heating of Buildings

    E-Print Network [OSTI]

    Gomri, R.; Boulkamh, M.

    2010-01-01T23:59:59.000Z

    to compensate the deficit. In this case a traditional solar heating system having the same characteristics with regard to the solar collecting area and the volume of storage tank is used. It can be concluded that the space heating system using a solar energy...

  6. Consumers Power, Inc.- Solar Energy System Rebate

    Broader source: Energy.gov [DOE]

    Consumers Power, Inc. (CPI) offers rebates to its residential customers who install solar water heating systems or solar photovoltaic (PV) systems from October 1, 2012 to September 30, 2013. The...

  7. Effects of solar photovoltaic panels on roof heat transfer

    E-Print Network [OSTI]

    Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C

    2011-01-01T23:59:59.000Z

    savings of shade  trees, Energy and Buildings 25  (1997b) trees planted near residential buildings resulted in a seasonal cooling energy 

  8. Thermoeconomic Analysis of a Solar Heat-Pump System

    E-Print Network [OSTI]

    Gao, Y.; Wang, S.

    2006-01-01T23:59:59.000Z

    This paper introduces a solar energy heat-pump system and analyzes the thermoeconomics. The results show that the solar energy heat-pump system can be operated in different modes and used for room heating in winter and cooling in summer and...

  9. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    S. Heterojunction photovoltaics using GaAs nanowires andC. M. Single nanowire photovoltaics, Chem. Soc. Rev. 38, 16-nanopillar-array photovoltaics on low-cost and flexible

  10. EVALUATION OF A SULFUR OXIDE CHEMICAL HEAT STORAGE PROCESS FOR A STEAM SOLAR ELECTRIC PLANT

    E-Print Network [OSTI]

    Dayan, J.

    2011-01-01T23:59:59.000Z

    CHEMICAL HEAT STORAGE PROCESS FOR A STEAM SOLAR ELECTRICCHEMICAL HEAT STORAGE PROCESS FOR A STEAM SOLAR ELECTRICprocess Boeing solar receiver [5J Internal detail of Boeing solar receiver [5J . 2.4 Heat

  11. 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

  12. Point-focus spectral splitting solar concentrator for multiple cells concentrating photovoltaic system

    E-Print Network [OSTI]

    Maragliano, Carlo; Stefancich, Marco

    2015-01-01T23:59:59.000Z

    In this paper we present and experimentally validate a low-cost design of a spectral splitting concentrator for the efficient conversion of solar energy. The optical device consists of a dispersive prismatic lens made of polycarbonate designed to simultaneously concentrate the solar light and split it into its spectral components. With respect to our previous implementation, this device concentrates the light along two axes and generates a light pattern compatible with the dimensions of a set of concentrating photovoltaic cells while providing a higher concentration ratio. The mathematical framework and the constructive approach used for the design are presented and the device performance is simulated using ray-tracing software. We obtain spectral separation in the visible range within a 3x1 cm2 area and a maximum concentration of 210x for a single wavelength. The device is fabricated by injection molding and its performance is experimentally investigated. We measure an optical transmissivity above 90% in the...

  13. 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...

  14. South River EMC- Solar Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    South River Electric Membership Corporation (EMC) is providing rebates to encourage their customers to install solar water heating systems. To be eligible for the rebate solar collectors must have...

  15. Santa Clara Water and Sewer- Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    In 1975, the City of Santa Clara established the nation's first municipal solar utility. Under the Solar Water Heating Program, the Santa Clara Water and Sewer Utilities Department supplies,...

  16. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    into flexible, 15 low-cost photovoltaic devices. To analyzediminish the cost of the active photovoltaic cell byphotovoltaic market. However, mainly due to high manufacturing costs,

  17. Variability of Power from Large-Scale Solar Photovoltaic Scenarios in the State of Gujarat: Preprint

    SciTech Connect (OSTI)

    Parsons, B.; Hummon, M.; Cochran, J.; Stoltenberg, B.; Batra, P.; Mehta, B.; Patel, D.

    2014-04-01T23:59:59.000Z

    India has ambitious goals for high utilization of variable renewable power from wind and solar, and deployment has been proceeding at a rapid pace. The western state of Gujarat currently has the largest amount of solar generation of any Indian state, with over 855 Megawatts direct current (MWDC). Combined with over 3,240 MW of wind, variable generation renewables comprise nearly 18% of the electric-generating capacity in the state. A new historic 10-kilometer (km) gridded solar radiation data set capturing hourly insolation values for 2002-2011 is available for India. We apply an established method for downscaling hourly irradiance data to one-minute irradiance data at potential PV power production locations for one year, 2006. The objective of this report is to characterize the intra-hour variability of existing and planned photovoltaic solar power generation in the state of Gujarat (a total of 1.9 gigawatts direct current (GWDC)), and of five possible expansion scenarios of solar generation that reflect a range of geographic diversity (each scenario totals 500-1,000 MW of additional solar capacity). The report statistically analyzes one year's worth of power variability data, applied to both the baseline and expansion scenarios, to evaluate diurnal and seasonal power fluctuations, different timescales of variability (e.g., from one to 15 minutes), the magnitude of variability (both total megawatts and relative to installed solar capacity), and the extent to which the variability can be anticipated in advance. The paper also examines how Gujarat Energy Transmission Corporation (GETCO) and the Gujarat State Load Dispatch Centre (SLDC) could make use of the solar variability profiles in grid operations and planning.

  18. Variability of Photovoltaic Power in the State of Gujarat Using High Resolution Solar Data

    SciTech Connect (OSTI)

    Hummon, M.; Cochran, J.; Weekley, A.; Lopez, A.; Zhang, J.; Stoltenberg, B.; Parsons, B.; Batra, P.; Mehta, B.; Patel, D.

    2014-03-01T23:59:59.000Z

    India has ambitious goals for high utilization of variable renewable power from wind and solar, and deployment has been proceeding at a rapid pace. The western state of Gujarat currently has the largest amount of solar generation of any Indian state, with over 855 Megawatts direct current (MWDC). Combined with over 3,240 MW of wind, variable generation renewables comprise nearly 18% of the electric-generating capacity in the state. A new historic 10-kilometer (km) gridded solar radiation data set capturing hourly insolation values for 2002-2011 is available for India. We apply an established method for downscaling hourly irradiance data to one-minute irradiance data at potential PV power production locations for one year, 2006. The objective of this report is to characterize the intra-hour variability of existing and planned photovoltaic solar power generation in the state of Gujarat (a total of 1.9 gigawatts direct current (GWDC)), and of five possible expansion scenarios of solar generation that reflect a range of geographic diversity (each scenario totals 500-1,000 MW of additional solar capacity). The report statistically analyzes one year's worth of power variability data, applied to both the baseline and expansion scenarios, to evaluate diurnal and seasonal power fluctuations, different timescales of variability (e.g., from one to 15 minutes), the magnitude of variability (both total megawatts and relative to installed solar capacity), and the extent to which the variability can be anticipated in advance. The paper also examines how Gujarat Energy Transmission Corporation (GETCO) and the Gujarat State Load Dispatch Centre (SLDC) could make use of the solar variability profiles in grid operations and planning.

  19. Office of Legacy Management Decision Tree for Solar Photovoltaic Projects - 13317

    SciTech Connect (OSTI)

    Elmer, John; Butherus, Michael [S.M. Stoller Corporation (United States)] [S.M. Stoller Corporation (United States); Barr, Deborah L. [U.S. Department of Energy Office of Legacy Management (United States)] [U.S. Department of Energy Office of Legacy Management (United States)

    2013-07-01T23:59:59.000Z

    To support consideration of renewable energy power development as a land reuse option, the DOE Office of Legacy Management (LM) and the National Renewable Energy Laboratory (NREL) established a partnership to conduct an assessment of wind and solar renewable energy resources on LM lands. From a solar capacity perspective, the larger sites in the western United States present opportunities for constructing solar photovoltaic (PV) projects. A detailed analysis and preliminary plan was developed for three large sites in New Mexico, assessing the costs, the conceptual layout of a PV system, and the electric utility interconnection process. As a result of the study, a 1,214-hectare (3,000-acre) site near Grants, New Mexico, was chosen for further study. The state incentives, utility connection process, and transmission line capacity were key factors in assessing the feasibility of the project. LM's Durango, Colorado, Disposal Site was also chosen for consideration because the uranium mill tailings disposal cell is on a hillside facing south, transmission lines cross the property, and the community was very supportive of the project. LM worked with the regulators to demonstrate that the disposal cell's long-term performance would not be impacted by the installation of a PV solar system. A number of LM-unique issues were resolved in making the site available for a private party to lease a portion of the site for a solar PV project. A lease was awarded in September 2012. Using a solar decision tree that was developed and launched by the EPA and NREL, LM has modified and expanded the decision tree structure to address the unique aspects and challenges faced by LM on its multiple sites. The LM solar decision tree covers factors such as land ownership, usable acreage, financial viability of the project, stakeholder involvement, and transmission line capacity. As additional sites are transferred to LM in the future, the decision tree will assist in determining whether a solar PV project is feasible on the new sites. (authors)

  20. Variability of Power from Large-Scale Solar Photovoltaic Scenarios in the State of Gujarat (Presentation)

    SciTech Connect (OSTI)

    Parsons, B.; Hummon, M.; Cochran, J.; Stoltenberg, B.; Batra, P.; Mehta, B.; Patel, D.

    2014-04-01T23:59:59.000Z

    India has ambitious goals for high utilization of variable renewable power from wind and solar, and deployment has been proceeding at a rapid pace. The western state of Gujarat currently has the largest amount of solar generation of any Indian state, with over 855 Megawatts direct current (MWDC). Combined with over 3,240 MW of wind, variable generation renewables comprise nearly 18% of the electric-generating capacity in the state. A new historic 10-kilometer (km) gridded solar radiation data set capturing hourly insolation values for 2002-2011 is available for India. We apply an established method for downscaling hourly irradiance data to one-minute irradiance data at potential PV power production locations for one year, 2006. The objective of this report is to characterize the intra-hour variability of existing and planned photovoltaic solar power generation in the state of Gujarat (a total of 1.9 gigawatts direct current (GWDC)), and of five possible expansion scenarios of solar generation that reflect a range of geographic diversity (each scenario totals 500-1,000 MW of additional solar capacity). The report statistically analyzes one year's worth of power variability data, applied to both the baseline and expansion scenarios, to evaluate diurnal and seasonal power fluctuations, different timescales of variability (e.g., from one to 15 minutes), the magnitude of variability (both total megawatts and relative to installed solar capacity), and the extent to which the variability can be anticipated in advance. The paper also examines how Gujarat Energy Transmission Corporation (GETCO) and the Gujarat State Load Dispatch Centre (SLDC) could make use of the solar variability profiles in grid operations and planning.

  1. Solar heating and cooling diode module

    DOE Patents [OSTI]

    Maloney, Timothy J. (Winchester, VA)

    1986-01-01T23:59:59.000Z

    A high efficiency solar heating system comprising a plurality of hollow modular units each for receiving a thermal storage mass, the units being arranged in stacked relation in the exterior frame of a building, each of the units including a port for filling the unit with the mass, a collector region and a storage region, each region having inner and outer walls, the outer wall of the collector region being oriented for exposure to sunlight for heating the thermal storage mass; the storage region having an opening therein and the collector region having a corresponding opening, the openings being joined for communicating the thermal storage mass between the storage and collector regions by thermosiphoning; the collector region being disposed substantially below and in parallel relation to the storage region in the modular unit; and the inner wall of the collector region of each successive modular unit in the stacked relation extending over the outer wall of the storage region of the next lower modular unit in the stacked relation for reducing heat loss from the system. Various modifications and alternatives are disclosed for both heating and cooling applications.

  2. EELE408 Photovoltaics Lecture 22: Grid Tied Systems

    E-Print Network [OSTI]

    Kaiser, Todd J.

    City Hall 11 Two inverters in this systems Photovoltaic & Solar Heating 12 Hot water tilted for winter panels: Kyrocera 210 ­ Inverter: Fronius IG 5.0 · 5000 W · Price Estimate ­ Solar Modules (24) $20k anchors Installed Anchor System Fl hi dd d h f i hi l d 4 Flashing added as the roof is shingled Solar

  3. Fort Pierce Utilities Authority- Solar Water Heating Rebate (Florida)

    Broader source: Energy.gov [DOE]

    '''''Fort Pierce Utilities Authority has suspended the Solar Water Heating rebate program until 2013. Contact the utility for more information on these offerings.'''''

  4. Heat Transfer Interface for Thermo-Solar Energy - Energy Innovation...

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

    Energy Efficiency Building Energy Efficiency Find More Like This Return to Search Heat Transfer Interface for Thermo-Solar Energy Lawrence Berkeley National Laboratory...

  5. Duquesne Light Company- Residential Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    Duquesne Light provides rebates to its residential customers for purchasing and installing qualifying solar water heating systems. Eligible systems may receive a flat rebate of $286 per qualifying...

  6. The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with CombinedHeat and Power

    SciTech Connect (OSTI)

    Marnay, Chris; Stadler, Michael; Cardoso, Goncalo; Megel, Olivier; Lai, Judy; Siddiqui, Afzal

    2009-08-15T23:59:59.000Z

    The addition of solar thermal and heat storage systems can improve the economic, as well as environmental attraction of micro-generation systems, e.g. fuel cells with or without combined heat and power (CHP) and contribute to enhanced CO2 reduction. However, the interactions between solar thermal collection and storage systems and CHP systems can be complex, depending on the tariff structure, load profile, etc. In order to examine the impact of solar thermal and heat storage on CO2 emissions and annual energy costs, a microgrid's distributed energy resources (DER) adoption problem is formulated as a mixed-integer linear program. The objective is minimization of annual energy costs. This paper focuses on analysis of the optimal interaction of solar thermal systems, which can be used for domestic hot water, space heating and/or cooling, and micro-CHP systems in the California service territory of San Diego Gas and Electric (SDG&E). Contrary to typical expectations, our results indicate that despite the high solar radiation in southern California, fossil based CHP units are dominant, even with forecast 2020 technology and costs. A CO2 pricing scheme would be needed to incent installation of combined solar thermal absorption chiller systems, and no heat storage systems are adopted. This research also shows that photovoltaic (PV) arrays are favored by CO2 pricing more than solar thermal adoption.

  7. Presented at the 21th European Photovoltaic Solar Energy Conference, Dresden, Germany, 4-8 September 2006

    E-Print Network [OSTI]

    Presented at the 21th European Photovoltaic Solar Energy Conference, Dresden, Germany, 4 SonnenStrom AG, Schillerstr. 1/6, 89077 Ulm, Germany V.M. Fthenakis, vmf@bnl.gov, Phone +1 631 344 2830 in Western-Europe (mainly Germany) and designed as described in section 3. Data on material quantities were

  8. Solar Photovoltaic Financing: Deployment on Public Property by State and Local Governments

    SciTech Connect (OSTI)

    Cory, K.; Coughlin, J.; Coggeshall, C.

    2008-05-01T23:59:59.000Z

    State and local governments have grown increasingly aware of the economic, environmental, and societal benefits of taking a lead role in U.S. implementation of renewable energy, particularly distributed photovoltaic (PV) installations. Recently, solar energy's cost premium has declined as a result of technology improvements and an increase in the cost of traditional energy generation. At the same time, a nationwide public policy focus on carbon-free, renewable energy has created a wide range of financial incentives to lower the costs of deploying PV even further. These changes have led to exponential increases in the availability of capital for solar projects, and tremendous creativity in the development of third-party ownership structures. As significant users of electricity, state and local governments can be an excellent example for solar PV system deployment on a national scale. Many public entities are not only considering deployment on public building rooftops, but also large-scale applications on available public lands. The changing marketplace requires that state and local governments be financially sophisticated to capture as much of the economic potential of a PV system as possible. This report examines ways that state and local governments can optimize the financial structure of deploying solar PV for public uses.

  9. 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.

  10. Financing Non-Residential Photovoltaic Projects: Options and Implications

    E-Print Network [OSTI]

    Bolinger, Mark

    2009-01-01T23:59:59.000Z

    Coggeshall. 2008. Solar Photovoltaic Financing: DeploymentEconomics of Commercial Photovoltaic Systems in California.Financing Non-Residential Photovoltaic Projects: Options and

  11. Statistical Methods for Enhanced Metrology in Semiconductor/Photovoltaic Manufacturing

    E-Print Network [OSTI]

    Zeng, Dekong

    2012-01-01T23:59:59.000Z

    and Simulation of Photovoltaic Arrays. ” IEEE Trans. PowerSolar Cell Variability Photovoltaic (PV) cells manufacturedmodeling method for photovoltaic cells. ” in Proc. IEEE 35th

  12. Statistical Methods for Enhanced Metrology in Semiconductor/Photovoltaic Manufacturing

    E-Print Network [OSTI]

    Zeng, Dekong

    2012-01-01T23:59:59.000Z

    modeling method for photovoltaic cells. ” in Proc. IEEE 35thlosses in solar photovoltaic cell networks. ” Energy 32:Cell Variability Photovoltaic (PV) cells manufactured with

  13. Fabrication and Characterization of Organic/Inorganic Photovoltaic Devices

    E-Print Network [OSTI]

    Guvenc, Ali Bilge

    2012-01-01T23:59:59.000Z

    and their influence on photovoltaic cells, Solar EnergyPhotodiodes, and Photovoltaic Cells, Applied Physics LettersHeeger, Polymer Photovoltaic Cells - Enhanced Efficiencies

  14. Fabrication and Characterization of Organic/Inorganic Photovoltaic Devices

    E-Print Network [OSTI]

    Guvenc, Ali Bilge

    2012-01-01T23:59:59.000Z

    J. W. Yu, Organic photovoltaic devices with a crosslinkablein Nanostructured Photovoltaic Devices, Recent Patents oninterfaces in organic photovoltaic devices, Solar Energy

  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. Solar Transient Events and their importance for Coronal Heating

    E-Print Network [OSTI]

    1 Solar Transient Events and their importance for Coronal Heating J. Gerry Doyle and Maria S to understanding how the solar plasma is accel- erated and heated may well be found in the study of these small that these small-scale events may well have broad implications for the mass and energy balance of the whole upper

  17. Increasing Community Access to Solar: Designing and Developing a Shared Solar Photovoltaic System (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-06-01T23:59:59.000Z

    This document introduces the Energy Department's new Guide to Community Shared Solar: Utility, Private, and Nonprofit Project Development. The guide is designed to help those who want to develop community shared solar projects - from community organizers and advocates to utility managers and government officials - navigate the process of developing shared systems, from early planning to implementation.

  18. TRANSPARENT HEAT MIRRORS FOR PASSIVE SOLAR HEATING APPLICATIONS

    E-Print Network [OSTI]

    Selkowitz, S.

    2011-01-01T23:59:59.000Z

    Energy, Office of Assistant Secretary for Conservation and Solarmirrors for energy conservation and passive solar heatingfor energy conservation and passive solar applications. ! £

  19. OPTIMAi UTILIZATION OF SOLAR ENERGY IN HEATING AND COOLINGOF BUILDINGS

    E-Print Network [OSTI]

    Moore, John Barratt

    OPTIMAi UTILIZATION OF SOLAR ENERGY IN HEATING AND COOLINGOF BUILDINGS C. Byron Winn Gearold R fundamental optimization problems involved in the design of a solar building. The first is a parameter for the given system configu- ration and the opt the latter problem The CSU Solar parameters such as mal set

  20. Turbulent heating of the corona and solar wind: the heliospheric

    E-Print Network [OSTI]

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

  1. SIXTH QUARTERLY REPORT OF RESEARCH ON CuxS - (Cd,Zn)S PHOTOVOLTAIC SOLAR ENERGY CONVERTERS

    E-Print Network [OSTI]

    Chin, B.L.

    2011-01-01T23:59:59.000Z

    for use in experimental photovoltaic cells. Hall mobilityvacuum method for photovoltaic cell fabrication" However,

  2. European Photovoltaic Solar Energy Conference, Hamburg, Germany, 21-25 September 2009 IMAGING AND ANALYSIS OF PRE-BREAKDOWN SITES

    E-Print Network [OSTI]

    the current flow also results in local heating [6]. In photovoltaic modules, the temperature of those hot spots might be- come high enough to cause a damage of the module en- capsulation. Using infrared imaging are performed using an infrared camera with an MCT sensor sensitive in the wavelength range from 3.9 to 5 µm

  3. Rules of thumb for passive solar heating

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1980-01-01T23:59:59.000Z

    Rules of thumb are given for passive solar systems for: (1) sizing solar glazing for 219 cities, (2) sizing thermal storage mass, and (3) building orientation.

  4. Optical Refrigeration for Ultra-Efficient Photovoltaics

    E-Print Network [OSTI]

    Manor, Assaf; Rotschild, Carmel

    2014-01-01T23:59:59.000Z

    Improving the conversion efficiency of solar energy to electricity is most important to mankind. For single-junction photovoltaic solar-cells, the Shockley-Queisser thermodynamic efficiency limit is extensively due to the heat dissipation, inherently accompanying the quantum process of electro-chemical potential generation. Concepts such as solar thermo-photovoltaics and thermo-photonics, have been suggested to harness this wasted heat, yet efficiencies exceeding the Shockley-Queisser limit have not been demonstrated due to the challenge of operating at high temperatures. Here, we present a highly efficient converter based on endothermic photoluminescence, which operates at relative low temperatures. The thermally induced blue-shifted photoluminescence of a low-bandgap absorber is coupled to a high-bandgap photovoltaic cell. The high absorber's photo-current and the high cell's voltage results in 69% maximal theoretical conversion efficiencies. We experimentally demonstrate tenfold thermal-enhancement of usef...

  5. A nanophotonic solar thermophotovoltaic device

    E-Print Network [OSTI]

    Lenert, Andrej

    The most common approaches to generating power from sunlight are either photovoltaic, in which sunlight directly excites electron–hole pairs in a semiconductor, or solar–thermal, in which sunlight drives a mechanical heat ...

  6. THERMOCHEMICAL HEAT STORAGE FOR CONCENTRATED SOLAR POWER

    SciTech Connect (OSTI)

    PROJECT STAFF

    2011-10-31T23:59:59.000Z

    Thermal energy storage (TES) is an integral part of a concentrated solar power (CSP) system. It enables plant operators to generate electricity beyond on sun hours and supply power to the grid to meet peak demand. Current CSP sensible heat storage systems employ molten salts as both the heat transfer fluid and the heat storage media. These systems have an upper operating temperature limit of around 400 C. Future TES systems are expected to operate at temperatures between 600 C to 1000 C for higher thermal efficiencies which should result in lower electricity cost. To meet future operating temperature and electricity cost requirements, a TES concept utilizing thermochemical cycles (TCs) based on multivalent solid oxides was proposed. The system employs a pair of reduction and oxidation (REDOX) reactions to store and release heat. In the storage step, hot air from the solar receiver is used to reduce the oxidation state of an oxide cation, e.g. Fe3+ to Fe2+. Heat energy is thus stored as chemical bonds and the oxide is charged. To discharge the stored energy, the reduced oxide is re-oxidized in air and heat is released. Air is used as both the heat transfer fluid and reactant and no storage of fluid is needed. This project investigated the engineering and economic feasibility of this proposed TES concept. The DOE storage cost and LCOE targets are $15/kWh and $0.09/kWh respectively. Sixteen pure oxide cycles were identified through thermodynamic calculations and literature information. Data showed the kinetics of re-oxidation of the various oxides to be a key barrier to implementing the proposed concept. A down selection was carried out based on operating temperature, materials costs and preliminary laboratory measurements. Cobalt oxide, manganese oxide and barium oxide were selected for developmental studies to improve their REDOX reaction kinetics. A novel approach utilizing mixed oxides to improve the REDOX kinetics of the selected oxides was proposed. It partially replaces some of the primary oxide cations with selected secondary cations. This causes a lattice charge imbalance and increases the anion vacancy density. Such vacancies enhance the ionic mass transport and lead to faster re-oxidation. Reoxidation fractions of Mn3O4 to Mn2O3 and CoO to Co3O4 were improved by up to 16 fold through the addition of a secondary oxide. However, no improvement was obtained in barium based mixed oxides. In addition to enhancing the short term re-oxidation kinetics, it was found that the use of mixed oxides also help to stabilize or even improve the TES properties after long term thermal cycling. Part of this improvement could be attributed to a reduced grain size in the mixed oxides. Based on the measurement results, manganese-iron, cobalt-aluminum and cobalt iron mixed oxides have been proposed for future engineering scale demonstration. Using the cobalt and manganese mixed oxides, we were able to demonstrate charge and discharge of the TES media in both a bench top fixed bed and a rotary kiln-moving bed reactor. Operations of the fixed bed configuration are straight forward but require a large mass flow rate and higher fluid temperature for charging. The rotary kiln makes direct solar irradiation possible and provides significantly better heat transfer, but designs to transport the TES oxide in and out of the reactor will need to be defined. The final reactor and system design will have to be based on the economics of the CSP plant. A materials compatibility study was also conducted and it identified Inconel 625 as a suitable high temperature engineering material to construct a reactor holding either cobalt or manganese mixed oxides. To assess the economics of such a CSP plant, a packed bed reactor model was established as a baseline. Measured cobalt-aluminum oxide reaction kinetics were applied to the model and the influences of bed properties and process parameters on the overall system design were investigated. The optimal TES system design was found to be a network of eight fixed bed reactors at 18.75 MWth each with charge and

  7. Effect of Heat and Electricity Storage and Reliability on Microgrid Viability: A Study of Commercial Buildings in California and New York States

    E-Print Network [OSTI]

    Stadler, Michael

    2009-01-01T23:59:59.000Z

    ab’), photovoltaic (‘pv’), and solar thermal (‘st’)} t u Daym,t,h Net heat from solar thermal during hour h, type of daysame alignment of the solar thermal panel it can be used for

  8. Central solar heating plants with seasonal storage in mines

    SciTech Connect (OSTI)

    Eikmeier, B.; Mohr, M.; Unger, H.

    1999-07-01T23:59:59.000Z

    The solar assisted heat supply of building offers a great technical potential for the substitution of fossil energy sources. Central solar Heating Plants with Seasonal Storage (CSHPSS) supply 100 and more buildings and reach a solar fraction of 50% or more of the total load with far less specific heat costs [$/kWh{sub solar}] compared to small domestic hot water systems (DHW) for single-family houses. However, the construction of seasonal storage is too expensive. At the Ruhu University Bochum the use of mines for a seasonal storage of low temperature heat is examined in cooperation with industrial partners. The use of available storage volumes may lead to a decrease of investment costs. Additional geothermal heat gains can be obtained from the warm surrounding rock; therefore a high efficiency can be achieved.

  9. Design and Experiments of a Solar Low-temperature Hot Water Floor Radiant Heating System

    E-Print Network [OSTI]

    Wu, Z.; Li, D.

    2006-01-01T23:59:59.000Z

    The solar low-temperature hot water floor radiant heating system combines solar energy heating with floor radiant heating. This kind of environmental heating way not only saves fossil resources and reduces pollution, but also makes people feel more...

  10. Feasibility Study of Economics and Performance of Solar Photovoltaics at Johnson County Landfill

    SciTech Connect (OSTI)

    Salasovich, J.; Mosey, G.

    2012-01-01T23:59:59.000Z

    The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Johnson County Landfill in Shawnee, Kansas, for a feasibility study of renewable energy production. Citizens of Shawnee, city planners, and site managers are interested in redevelopment uses for landfills in Kansas that are particularly well suited for grid-tied solar photovoltaic (PV) installation. This report assesses the Johnson County Landfill for possible grid-tied PV installations and estimates the cost, performance, and site impacts of three different PV options: crystalline silicon (fixed tilt), crystalline silicon (single-axis tracking), and thin film (fixed tilt). Each option represents a standalone system that can be sized to use an entire available site area. In addition, the report outlines financing options that could assist in the implementation of a system. The feasibility of PV systems installed on landfills is highly impacted by the available area for an array, solar resource, operating status, landfill cap status, distance to transmission lines, and distance to major roads. The report findings are applicable to other landfills in the surrounding area.

  11. CONTROL SYSTEM FOR SOLAR HEATING and COOLING

    E-Print Network [OSTI]

    Dols, C.

    2010-01-01T23:59:59.000Z

    Solar Energy Society Meeting, Los Angeles, California, Julysolar in- solation measuring stations in northern and central California (California 94720 August 1975 A control system is being developed that will be capable of operating solar

  12. Solar heating and cooling of housing : five institutional analysis case studies

    E-Print Network [OSTI]

    Nutt-Powell, Thomas E.

    1979-01-01T23:59:59.000Z

    This paper is one of a series resulting from institutional analysis of photovoltaic (PV) acceptance. The case studies reported here involve use of solar thermal technologies in variuos residential settings. All of the ...

  13. Concentrating Photovoltaics (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.

    2009-01-20T23:59:59.000Z

    Solar is growing rapidly, and the concentrating photovoltaics industry-both high- and low-concentration cell approaches-may be ready to ramp production in 2009.

  14. Photovoltaic Cell Structure Basics

    Broader source: Energy.gov [DOE]

    The actual structural design of a photovoltaic (PV), or solar cell, depends on the limitations of the material used in the PV cell.

  15. European Photovoltaic Solar Energy Conference, Frankfurt, Germany, 24-28 September 2012, 2AO.2.4 HIGH EFFICIENCY BACK-CONTACT BACK-JUNCTION SILICON SOLAR CELLS WITH CELL

    E-Print Network [OSTI]

    27th European Photovoltaic Solar Energy Conference, Frankfurt, Germany, 24-28 September 2012, 2AO.2 cost of energy in photovoltaics can be achieved by increasing the conversion efficiency as well into the surface of a thick silicon wafer. After sintering at 1100 °C in hydrogen atmosphere silicon is grown

  16. Solar Water Heating Requirement for New Residential Construction

    Broader source: Energy.gov [DOE]

    In June 2008, Hawaii enacted legislation, [http://www.capitol.hawaii.gov/session2008/bills/SB644_CD1_.htm SB 644], with the intent to require solar water-heating (SWH) systems to be installed on...

  17. Minnesota Power- Solar-Thermal Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    Minnesota Power offers a 25% rebate for qualifying solar thermal water heating systems. The maximum award for single-family customers is $2,000 per customer; $4,000 for 2-3 family unit buildings; ...

  18. GreyStone Power- Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    GreyStone Power, an electricity cooperative serving 103,000 customers in Georgia, introduced a solar water heating rebate in March 2009. This $500 rebate is available to customers regardless of...

  19. Southwest Gas Corporation- Smarter Greener Better Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    Southwest Gas is offering rebates to Nevada customers for solar water heating systems installed in private residential, small business, public and other properties. Rebates are based on the amount...

  20. Beaches Energy Services- Solar Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    Beaches Energy Services offers a solar water heating rebate to their residential customers. This $500 rebate applies to new systems which are properly installed and certified. New construction and...

  1. Lake Worth Utilities- Residential Solar Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    The City of Lake Worth Utilities (CLWU), in conjunction with Florida Municipal Power Agency, offers rebates to customers who purchase and install a solar water heating system for residential use. A...

  2. Questar Gas- Residential Solar Assisted Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    Questar gas provides incentives for residential customers to purchase and install solar water heating systems on their homes. Rebates of $750 per system are provided to customers of Questar who...

  3. Questar Gas- Residential Solar Assisted Water Heating Rebate Program (Idaho)

    Broader source: Energy.gov [DOE]

    Questar gas provides incentives for residential customers to purchase and install solar water heating systems on their homes. Rebates of $750 per system are provided to customers of Questar who...

  4. City of Tallahassee Utilities- Solar Water Heating Rebate

    Broader source: Energy.gov [DOE]

    The City of Tallahassee Utilities offers a $450 rebate to homeowners* and homebuilders who install a solar water-heating system. This rebate may be applied to a first-time installation or to the...

  5. City of Palo Alto Utilities- Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    City of Palo Alto Utilities is offering incentives for their residential, commercial and industrial customers to install solar water heating systems on their homes and facilities with a goal of 1...

  6. Sri M., Huld T., Dunlop E.D., Albuisson M., Lefvre M., Wald L., 2007. Uncertainties in photovoltaic electricity yield prediction from fluctuation of solar radiation. Proceedings of the 22nd

    E-Print Network [OSTI]

    Boyer, Edmond

    in photovoltaic electricity yield prediction from fluctuation of solar radiation. Proceedings of the 22nd European ELECTRICITY YIELD PREDICTION FROM FLUCTUATION OF SOLAR RADIATION Marcel Súri1 , Thomas Huld1 , Ewan D. Dunlop1Clim, PVGIS, solar radiation, interannual variability, PV yield prediction 1 INTRODUCTION Photovoltaic (PV

  7. Solar heating system installed at Jackson, Tennessee. Final report

    SciTech Connect (OSTI)

    None

    1980-10-01T23:59:59.000Z

    The solar energy heating system installed at the Coca-Cola Bottling Works in Jackson, Tennessee is described. The system consists of 9480 square feet of Owens-Illinois evacuated tubular solar collectors with attached specular cylindrical reflectors and will provide space heating for the 70,000 square foot production building in the winter, and hot water for the bottle washing equipment the remainder of the year. Component specifications and engineering drawings are included. (WHK)

  8. Heat storage and distribution inside passive-solar buildings

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1983-05-01T23:59:59.000Z

    Passive solar buildings are investigated from the viewpoint of the storage of solar heat in materials of the building: walls, floors, ceilings, and furniture. The effects of the location, material, thickness, and orientation of each internal building surface are investigated. The concept of diurnal heat capacity is introduced and a method of using this parameter to estimate clear-day temperature swings is developed. Convective coupling to remote rooms within a building is discussed. Design guidelines are given.

  9. Solar access of residential rooftops in four California cities

    E-Print Network [OSTI]

    Levinson, Ronnen

    2010-01-01T23:59:59.000Z

    solar-energy systems, including photovoltaic panels andsolar-energy systems, including photovoltaic panels and

  10. Passive-Solar-Heating Analysis: a new ASHRAE manual

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1983-01-01T23:59:59.000Z

    The forthcoming ASHRAE book, Passive Solar Heating Analysis, is described. ASHRAE approval procedures are discussed. An overview of the contents is given. The development of the solar load ratio correlations is described, and the applicability of the analysis method is discussed.

  11. Installation package for a Sunspot Cascade Solar Water Heating System

    SciTech Connect (OSTI)

    None

    1980-09-01T23:59:59.000Z

    Elcam, Incorporated of Santa Barbara, California, has developed two solar water heating systems. The systems have been installed at Tempe, Arizona and San Diego, California. The systems consist of the following: collector, collector-tank water loop, solar tank, conventional tank and controls. General guidelines are provided which may be utilized in development of detailed instalation plans and specifications. In addition, it provides instruction on operation, maintenance and installation of solar hot water systems.

  12. TRANSPARENT HEAT MIRRORS FOR PASSIVE SOLAR HEATING APPLICATIONS

    E-Print Network [OSTI]

    Selkowitz, S.

    2011-01-01T23:59:59.000Z

    heating purposes. BACKGROUND The reduction of heat transfer rates by the use of thermal infraredheating applications should become available on the marketplace. Due to their high reflectivity to thermal infrared

  13. Sustainable Energy Resources for Consumers Webinar on Solar Water Heating Transcript

    Broader source: Energy.gov [DOE]

    Video recording transcript of a Webinar on Nov. 16, 2010 about residential solar water heating applications

  14. CONTROL SYSTEM FOR SOLAR HEATING and COOLING

    E-Print Network [OSTI]

    Dols, C.

    2010-01-01T23:59:59.000Z

    sensors and control valves used in our generalized experimental system. The experimental solarsensors are remotely located at critical (in terms of decision-making) locations in the solar

  15. Electricity Rate Structures and the Economics of Solar PV: Could Mandatory Time-of-Use Rates Undermine California’s Solar Photovoltaic Subsidies?

    E-Print Network [OSTI]

    Borenstein, Severin

    2007-01-01T23:59:59.000Z

    the Twenty- Sixth IEEE Photovoltaic Specialists Conference,T. and R. Margolis. “Are Photovoltaic Systems Worth More toLarge Grid- Connected Photovoltaic Systems in California and

  16. 27th European Photovoltaic Solar Energy Conference, Frankfurt, Germany, 24-28 September 2012, 2AO.1.5 IMPACT OF THE REAR SURFACE ROUGHNESS ON INDUSTRIAL-TYPE PERC SOLAR CELLS

    E-Print Network [OSTI]

    -generation industrial solar cells as stated in the International Technology Roadmap [3]. An industrial PERC process flow27th European Photovoltaic Solar Energy Conference, Frankfurt, Germany, 24-28 September 2012, 2AO.1.5 IMPACT OF THE REAR SURFACE ROUGHNESS ON INDUSTRIAL-TYPE PERC SOLAR CELLS C.Kranz1 , S. Wyczanowski1 , S

  17. A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System

    E-Print Network [OSTI]

    Norwood, Zachary Mills

    2011-01-01T23:59:59.000Z

    review of small solar-powered heat engines part II: Researchsince 1950-conventional engines up to 100kW. Solar Energysmall solar-powered heat engines. part III: Research since

  18. Project Profile: Plug-and-Play Solar Photovoltaics for American Homes

    Broader source: Energy.gov [DOE]

    Fraunhofer USA, Inc., Center for Sustainable Energy Systems and its partners, under the Plug-and-Play Photovoltaics FOA, are developing technologies, components, systems, and standards that enable...

  19. Solar Advisor Model User Guide for Version 2.0

    SciTech Connect (OSTI)

    Gilman, P.; Blair, N.; Mehos, M.; Christensen, C.; Janzou, S.; Cameron, C.

    2008-08-01T23:59:59.000Z

    The Solar Advisor Model (SAM) provides a consistent framework for analyzing and comparing power system costs and performance across the range of solar technologies and markets, from photovoltaic systems for residential and commercial markets to concentrating solar power and large photovoltaic systems for utility markets. This manual describes Version 2.0 of the software, which can model photovoltaic and concentrating solar power technologies for electric applications for several markets. The current version of the Solar Advisor Model does not model solar heating and lighting technologies.

  20. Solar Energy Education. Solar solutions: Reader, Part III

    SciTech Connect (OSTI)

    Not Available

    1981-05-01T23:59:59.000Z

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

  1. Published as: Ha T. Nguyen and Joshua M. Pearce, "Incorporating Shading Losses in Solar Photovoltaic Potential Assessment at the Municipal Scale" Solar Energy 86(5), pp. 12451260 (2012). DOI: http://dx.doi.org/10.1016/j.solener.2012.01.017

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Photovoltaic Potential Assessment at the Municipal Scale" Solar Energy 86(5), pp. 1245­1260 (2012). DOI: http; Photovoltaic; Renewable energy; Solar energy; Solar irradiation modeling ; Shading Abbreviations (Apv : slope 1 hal-00685775,version1-5Apr2012 Author manuscript, published in "Solar Energy 86, 5 (2012) 1245

  2. Theoretical and experimental investigation of heat pipe solar collector

    SciTech Connect (OSTI)

    Azad, E. [Iranian Research Organization for Science and Technology, 71 Forsat Avenue Ferdousi sq., Tehran (Iran)

    2008-09-15T23:59:59.000Z

    Heat pipe solar collector was designed and constructed at IROST and its performance was measured on an outdoor test facility. The thermal behavior of a gravity assisted heat pipe solar collector was investigated theoretically and experimentally. A theoretical model based on effectiveness-NTU method was developed for evaluating the thermal efficiency of the collector, the inlet, outlet water temperatures and heat pipe temperature. Optimum value of evaporator length to condenser length ratio is also determined. The modelling predictions were validated using experimental data and it shows that there is a good concurrence between measured and predicted results. (author)

  3. European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 4AV.3.25 MODELLING THE CURING DYNAMICS OF ETHYLENE-VINYL ACETATE

    E-Print Network [OSTI]

    25th European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 4AV.3. Alshuth2 , M. Köntges1 and R. Brendel1,3 1 Institute for Solar Energy Research Hamelin (ISFH), Am Ohrberg 1, D-31860 Emmerthal, Germany 2 German Institute of Rubber Technology, Eupener Stra�e 33, D-30519

  4. European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 2BO.1.5 BORON-OXYGEN-RELATED RECOMBINATION CENTERS IN COMPENSATED SILICON

    E-Print Network [OSTI]

    25th European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 2BO.1 Rougieux2 , Daniel Macdonald2 , Karsten Bothe1 , and Jan Schmidt1 1 Institute for Solar Energy Research and Computer Science, The Australian National University Canberra ACT 0200, Australia ABSTRACT: The impact

  5. Dye-Sentitized Solar Cells (DSSCs) are an emerging low-cost third generation photovoltaic technology particularly suited for efficient light-

    E-Print Network [OSTI]

    light-to -electricity conversion efficiency in early implementations under AM1.5 solar light. EasyDye-Sentitized Solar Cells (DSSCs) are an emerging low-cost third generation photovoltaic technology particularly suited for efficient light- to-electricity conversion in indoors low-light

  6. European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 2CV.3.24 DAIDALOS A PLUGIN BASED FRAMEWORK

    E-Print Network [OSTI]

    these plugins, complex objects can be created in a modular way. The definitions of input- and output-data within25th European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 2CV.3,2 1 Institute for Solar Energy Research Hamelin (ISFH), Am Ohrberg 1, 31860 Emmerthal, Germany 2

  7. City of Tallahassee Utilities- Solar Loans

    Broader source: Energy.gov [DOE]

    The City of Tallahassee Utilities offers loans with an interest rate of 5% for a variety of energy-saving measures, including photovoltaic (PV) systems and solar water-heating systems. Under this...

  8. Piedmont EMC- Solar Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    Piedmont Electric Membership Corporation is offering a $500 rebate to its residential members who install solar water heaters on their homes. The utility recommends but does not require the system...

  9. Austin Energy- Solar Water Heating Rebate

    Broader source: Energy.gov [DOE]

    Austin Energy offers its residential, commercial, and municipal customers up front rebates or a low interest loan for the purchase and installation of solar hot water heaters. Because the program...

  10. Solar Pool Heating | Open Energy Information

    Open Energy Info (EERE)

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

  11. Solar Water Heating in Dragash Municipality, Kosovo.

    E-Print Network [OSTI]

    Dahl Håkans, Mia

    2010-01-01T23:59:59.000Z

    ?? Water has been heated with the sun has almost as long as there have been humans, but itis not until recently that more advanced… (more)

  12. Organic photovoltaics and concentrators

    E-Print Network [OSTI]

    Mapel, Jonathan King

    2008-01-01T23:59:59.000Z

    The separation of light harvesting and charge generation offers several advantages in the design of organic photovoltaics and organic solar concentrators for the ultimate end goal of achieving a lower cost solar electric ...

  13. Nanocarbon-Based Photovoltaics

    E-Print Network [OSTI]

    Bernardi, Marco

    Carbon materials are excellent candidates for photovoltaic solar cells: they are Earth-abundant, possess high optical absorption, and maintain superior thermal and photostability. Here we report on solar cells with active ...

  14. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    D. Mills, "Cooling of photovoltaic cells under concentratedelectric performance of a photovoltaic cells by cooling andSolar Cell A photovoltaic cell is a semiconductor that

  15. Evaluation of solar collectors for heat pump applications. Final report

    SciTech Connect (OSTI)

    Skartvedt, Gary; Pedreyra, Donald; McMordle, Dr., Robert; Kidd, James; Anderson, Jerome; Jones, Richard

    1980-08-01T23:59:59.000Z

    The study was initiated to evaluate the potential utility of very low cost (possibly unglazed and uninsulated) solar collectors to serve as both heat collection and rejection devices for a liquid source heat pump. The approach consisted of exercising a detailed analytical simulation of the complete heat pump/solar collector/storage system against heating and cooling loads derived for typical single-family residences in eight US cities. The performance of each system was measured against that of a conventional air-to-air heat pump operating against the same loads. In addition to evaluation of solar collector options, the study included consideration of water tanks and buried pipe grids to provide thermal storage. As a supplement to the analytical tasks, the study included an experimental determination of night sky temperature and convective heat transfer coefficients for surfaces with dimensions typical of solar collectors. The experiments were conducted in situ by placing the test apparatus on the roofs of houses in the Denver, Colorado, area. (MHR)

  16. Become One In A Million: Partnership Updates. Million Solar Roofs and Interstate Renewable Energy Council Annual Meeting, Washington, D.C., October 2005

    SciTech Connect (OSTI)

    Tombari, C.

    2005-09-01T23:59:59.000Z

    The U.S. Department of Energy's Million Solar Roofs Initiative (MSR) is a unique public-private partnership aimed at overcoming market barriers for photovoltaics (PV), solar water heating, transpired solar collectors, solar space heating and cooling, and pool heating. This report contains annual progress reports from 866 partners across the United States.

  17. A Steam Quality Comparison between Nanoshell-Mediated Solar Heating and Conventional Electrical Heating

    E-Print Network [OSTI]

    GP-B-13 A Steam Quality Comparison between Nanoshell-Mediated Solar Heating in the Halas Group has led to the development of a novel, solar- based steam generation method using broadband. This a dramatic and highly non-equilibrium process. As such, investigating the properties of this steam

  18. The impact of retail rate structures on the economics of commercial photovoltaic systems in California

    E-Print Network [OSTI]

    Mills, Andrew D.

    2009-01-01T23:59:59.000Z

    Production of Solar Photovoltaic Cells. ” Center for theR. Margolis. 2004. “Are Photovoltaic Systems Worth More toLepley. 1993. “Distributed photovoltaic system evaluation by

  19. An Analysis of the Effects of Photovoltaic Energy Systems on Residential Selling Prices in California.

    E-Print Network [OSTI]

    Cappers, Peter

    2012-01-01T23:59:59.000Z

    Effects of Residential Photovoltaic Energy Systems on Homeof homes with existing photovoltaic (PV) energy systems havegrid-connected solar photovoltaic (PV) energy systems were

  20. Photovoltaic performance of ultra-small PbSe quantum dots

    E-Print Network [OSTI]

    Ma, Wanli

    2014-01-01T23:59:59.000Z

    Y; Alivisatos, AP, Photovoltaic Devices Employing TernaryPhotovoltaic performance of ultra-small PbSe quantum dotsquantum dot, solar cell, photovoltaic, quantum size effect

  1. The Impact of Retail Rate Structures on the Economics of Commercial Photovoltaic Systems in California

    E-Print Network [OSTI]

    Mills, Andrew

    2009-01-01T23:59:59.000Z

    Production of Solar Photovoltaic Cells. ” Center for theR. Margolis. 2004. “Are Photovoltaic Systems Worth More toLepley. 1993. “Distributed photovoltaic system evaluation by

  2. Modeling Variability and Uncertainty of Photovoltaic Generation: A Hidden State Spatial Statistical Approach

    E-Print Network [OSTI]

    Callaway, Duncan S; Tabone, Michaelangelo D

    2015-01-01T23:59:59.000Z

    AND UNCERTAINTY OF PHOTOVOLTAIC GENERATION [9] M. Milligan,for grid-connected photovoltaic system based on advancedand uncertainty in solar photovoltaic generation at multiple

  3. Residential Photovoltaic Energy Systems in California: The Effect on Home Sales Prices

    E-Print Network [OSTI]

    Hoen, Ben

    2013-01-01T23:59:59.000Z

    Residential Photovoltaic Energy Systems in California: Thethe marginal impacts of photovoltaic (PV) energy systems ons largest market for photovoltaic solar (PV), with nearly

  4. The Potential Impact of Increased Renewable Energy Penetrations on Electricity Bill Savings from Residential Photovoltaic Systems

    E-Print Network [OSTI]

    Barbose, Galen

    2013-01-01T23:59:59.000Z

    California’s Solar Photovoltaic Subsidies? Center for thefrom Residential Photovoltaic Systems Naïm R. Darghouth,FROM RESIDENTIAL PHOTOVOLTAIC SYSTEMS Naïm R. Darghouth

  5. The Effects of Non-Uniform Electronic Properties on Thin Film Photovoltaics

    E-Print Network [OSTI]

    Brown, Gregory Ferguson

    2011-01-01T23:59:59.000Z

    Third   Generation  Photovoltaics:  Advanced  Solar  R.   Noufi,  Prog.  Photovoltaics  16,  235-­?239  (2008).  M.  Green,  Prog.  Photovoltaics  17,  183-­?189  (2009).  

  6. Measuring solar reflectance Part I: Defining a metric that accurately predicts solar heat gain

    SciTech Connect (OSTI)

    Levinson, Ronnen; Akbari, Hashem; Berdahl, Paul

    2010-05-14T23:59:59.000Z

    Solar reflectance can vary with the spectral and angular distributions of incident sunlight, which in turn depend on surface orientation, solar position and atmospheric conditions. A widely used solar reflectance metric based on the ASTM Standard E891 beam-normal solar spectral irradiance underestimates the solar heat gain of a spectrally selective 'cool colored' surface because this irradiance contains a greater fraction of near-infrared light than typically found in ordinary (unconcentrated) global sunlight. At mainland U.S. latitudes, this metric RE891BN can underestimate the annual peak solar heat gain of a typical roof or pavement (slope {le} 5:12 [23{sup o}]) by as much as 89 W m{sup -2}, and underestimate its peak surface temperature by up to 5 K. Using R{sub E891BN} to characterize roofs in a building energy simulation can exaggerate the economic value N of annual cool-roof net energy savings by as much as 23%. We define clear-sky air mass one global horizontal ('AM1GH') solar reflectance R{sub g,0}, a simple and easily measured property that more accurately predicts solar heat gain. R{sub g,0} predicts the annual peak solar heat gain of a roof or pavement to within 2 W m{sup -2}, and overestimates N by no more than 3%. R{sub g,0} is well suited to rating the solar reflectances of roofs, pavements and walls. We show in Part II that R{sub g,0} can be easily and accurately measured with a pyranometer, a solar spectrophotometer or version 6 of the Solar Spectrum Reflectometer.

  7. Residential solar-photovoltaic power systems: the need for battery storage

    SciTech Connect (OSTI)

    Mueller, R.O.; Cha, B.K.; Giese, R.F.; Maslowski, C.

    1980-01-01T23:59:59.000Z

    Benefits of battery storage used in conjunction with residential solar photovoltaic (PV) power systems were evaluated for a representative set of utility service areas. The PV systems were assumed capable of exporting excess power to the utility grid, and the batteries sited at the substation level were operated as a form of load-leveling utility storage. A cost-allocation model, SIMSTOR, was employed to determine utility fuel and capital cost savings resulting from the addition of batteries as a function of PV system penetration level. These benefits were compared with the savings of batteries used alone without introduction of the PV systems. Battery storage capacities and discharge rates were varied to determine the battery configurations that maximize net utility savings as a function of battery costs. Installed (rated) PV device capacities up to 20 percent of the generation peak load in each service area were considered. Findings indicate that batteries and PV systems are complementary rather than competing technologies, when attached to the electric supply grid. The utility benefits of the PV systems are primarily fuel savings, while those of the battery are primarily due to savings in utility capacity. The economic rationale for batteries does not change significantly as the penetration level for the PV systems increases. In some of the service areas, the addition of the PV systems tended to sharpen rather than flatten the peaks in the utility's load curves, with the magnitude of the effect becoming more pronounced at the higher PV system penetration levels. As a result of these load shape changes, batteries with higher discharge rates and larger storage capacities were favored.

  8. Letting The Sun Shine On Solar Costs: An Empirical Investigation Of Photovoltaic Cost Trends In California

    E-Print Network [OSTI]

    Wiser, Ryan; Bolinger, Mark; Cappers, Peter; Margolis, Robert

    2006-01-01T23:59:59.000Z

    installations. This California Solar Initiative has the2. CALIFORNIA’S SOLAR PROGRAMS California’s PV market isramifications, both for California’s new solar programs and

  9. Solar energy storage through the homogeneous electrocatalytic reduction of carbon dioxide : photoelectrochemical and photovoltaic approaches

    E-Print Network [OSTI]

    Sathrum, Aaron John

    2011-01-01T23:59:59.000Z

    Photoelectrochemistry and Solar-Energy - Progress, PromiseConversion of Solar Energy. Philos. Trans. R. Soc. A-Math.Electrochemical Systems for Solar-Energy Conversion. J.

  10. Solar energy storage through the homogeneous electrocatalytic reduction of carbon dioxide : photoelectrochemical and photovoltaic approaches

    E-Print Network [OSTI]

    Sathrum, Aaron John

    2011-01-01T23:59:59.000Z

    Generation from Water Using Solar Energy. Materials-RelatedSemiconductor/Electrolyte Solar Energy Conversion. J. Phys.Conversion of Solar Energy. Philos. Trans. R. Soc. A-Math.

  11. Solar energy storage through the homogeneous electrocatalytic reduction of carbon dioxide : photoelectrochemical and photovoltaic approaches

    E-Print Network [OSTI]

    Sathrum, Aaron John

    2011-01-01T23:59:59.000Z

    Conversion of Solar Energy. Philos. Trans. R. Soc. A-Math.Electrochemical Systems for Solar-Energy Conversion. J.R. Photoelectrochemical Solar-Energy Conversion. Top. Curr.

  12. EWEB- Residential Solar Water Heating Loan Program

    Broader source: Energy.gov [DOE]

    Eugene Water and Electric Board (EWEB) offers residential customers a loan and cash discount program called, "The Bright Way To Heat Water." The program is designed to promote the installation of...

  13. Performance estimates for attached-sunspace passive solar heated buildings

    SciTech Connect (OSTI)

    McFarland, R.D.; Jones, R.W.

    1980-01-01T23:59:59.000Z

    Performance predictions have been made for attached-sunspace types of passively solar heated buildings. The predictions are based on hour-by-hour computer simulations using computer models developed in the framework of PASOLE, the Los Alamos Scientific Laboratory (LASL) passive solar energy simulation program. The models have been validated by detailed comparison with actual hourly temperature measurements taken in attached-sunspace test rooms at LASL.

  14. Colorado State University program for developing, testing, evaluating and optimizing solar heating and cooling systems

    SciTech Connect (OSTI)

    Not Available

    1991-01-07T23:59:59.000Z

    This report discusses the following tasks; solar heating with isothermal collector operation and advanced control strategy; solar cooling with solid desiccant; liquid desiccant cooling system development; solar house III -- development and improvement of solar heating systems employing boiling liquid collectors; generic solar domestic water heating systems; advanced residential solar domestic hot water (DHW) systems; management and coordination of Colorado State/DOE program; and field monitoring workshop.

  15. List of Passive Solar Space Heat Incentives | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive Solar Space Heat Incentives

  16. List of Solar Space Heat Incentives | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofs IncentivesListHeat

  17. Heat storage and distribution inside passive-solar buildings

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1983-01-01T23:59:59.000Z

    Passive-solar buildings are investigated from the viewpoint of the storage of solar heat in materials of the building: walls, floors, ceilings, and furniture. The effects of the location, material, thickness, and orientation of each internal building surface are investigated. The concept of diurnal heat capacity is introduced and a method of using this parameter to estimate clear-day temperature swings is developed. Convective coupling to remote rooms within a building is discussed, including both convection through single doorways and convective loops that may exist involving a sunspace. Design guidelines are given.

  18. EELE408 Photovoltaics Lecture 17 Photovoltaic Modules

    E-Print Network [OSTI]

    Kaiser, Todd J.

    1 EELE408 Photovoltaics Lecture 17 Photovoltaic Modules Dr. Todd J. Kaiser tjkaiser to temperature effects and other non ideal conditions · Allows for voltage drops across other PV system components · Requires 15 V to charge a 12 V battery 10 Module Current · Depends primarily on size of solar

  19. A uniform economic valuation methodology for solar photovoltaic applications competing in a utility environment

    E-Print Network [OSTI]

    Carpenter, Paul R.

    1978-01-01T23:59:59.000Z

    The question of how the economic benefits of weather-dependent electric generation technologies should be measured is addressed, with specific reference to dispersed, user-owned photovoltaic systems. The approach to ...

  20. Solar capabilities : promoting, technological learning in South Africa's photovoltaic supply industry

    E-Print Network [OSTI]

    Wright, Janelle N., 1978-

    2003-01-01T23:59:59.000Z

    I explore the mechanisms through which technological capabilities have been built in the market for photovoltaic (PV) module and balance of system (BOS) manufacture in South Africa. Drawing on the literature on technology ...

  1. An economic analysis of grid-connected residential solar photovoltaic power systems

    E-Print Network [OSTI]

    Carpenter, Paul R.

    The question of the utility grid-connected residential market for photovoltaics is examined from a user-ownership perspective. The price is calculated at which the user would be economically indifferent between

  2. New Hampshire Electric Co-Op- Residential Solar Photovoltaic Incentive Program

    Broader source: Energy.gov [DOE]

    New Hampshire Electric Co-op (NHEC) is offering rebates for residential, grid-tied photovoltaic (PV) systems up to one megawatt (MW) in capacity. The rebate is equal to 20% of the installed cost of...

  3. Transparent, near-infrared organic photovoltaic solar cells for window and energy-scavenging applications

    E-Print Network [OSTI]

    Lunt, Richard R.

    We fabricate near-infrared absorbing organic photovoltaics that are highly transparent to visible light. By optimizing near-infrared optical-interference, we demonstrate power efficiencies of 1.3±0.1% with simultaneous ...

  4. An analysis of the photovoltaic value chain for reviewing solar energy policy in Massachusetts

    E-Print Network [OSTI]

    Dean, Ryan, S. B. (Ryan G.) Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    We explore the photovoltaic value chain for 1st generation crystalline silicon, 2nd generation thin film and 3rd generation organic/ dye-sensitized PV in an effort to evaluate two levels of policy options intended to create ...

  5. 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.

  6. Low-Cost Solar Water Heating Research and Development Roadmap

    SciTech Connect (OSTI)

    Hudon, K.; Merrigan, T.; Burch, J.; Maguire, J.

    2012-08-01T23:59:59.000Z

    The market environment for solar water heating technology has changed substantially with the successful introduction of heat pump water heaters (HPWHs). The addition of this energy-efficient technology to the market increases direct competition with solar water heaters (SWHs) for available energy savings. It is therefore essential to understand which segment of the market is best suited for HPWHs and focus the development of innovative, low-cost SWHs in the market segment where the largest opportunities exist. To evaluate cost and performance tradeoffs between high performance hot water heating systems, annual energy simulations were run using the program, TRNSYS, and analysis was performed to compare the energy savings associated with HPWH and SWH technologies to conventional methods of water heating.

  7. Tracking heat flux sensors for concentrating solar applications

    DOE Patents [OSTI]

    Andraka, Charles E; Diver, Jr., Richard B

    2013-06-11T23:59:59.000Z

    Innovative tracking heat flux sensors located at or near the solar collector's focus for centering the concentrated image on a receiver assembly. With flux sensors mounted near a receiver's aperture, the flux gradient near the focus of a dish or trough collector can be used to precisely position the focused solar flux on the receiver. The heat flux sensors comprise two closely-coupled thermocouple junctions with opposing electrical polarity that are separated by a thermal resistor. This arrangement creates an electrical signal proportional to heat flux intensity, and largely independent of temperature. The sensors are thermally grounded to allow a temperature difference to develop across the thermal resistor, and are cooled by a heat sink to maintain an acceptable operating temperature.

  8. Solar energy storage through the homogeneous electrocatalytic reduction of carbon dioxide : photoelectrochemical and photovoltaic approaches

    E-Print Network [OSTI]

    Sathrum, Aaron John

    2011-01-01T23:59:59.000Z

    and Solar-Energy - Progress, Promise and Problems. J.energy storage problem. Solar fuels are concentrated energy

  9. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    plasmon-enhanced dye- sensitized solar cells through metalnanostructure- based or dye-sensitized solar cells represent

  10. Solar Thermochemical Fuels Production: Solar Fuels via Partial Redox Cycles with Heat Recovery

    SciTech Connect (OSTI)

    None

    2011-12-19T23:59:59.000Z

    HEATS Project: The University of Minnesota is developing a solar thermochemical reactor that will efficiently produce fuel from sunlight, using solar energy to produce heat to break chemical bonds. The University of Minnesota is envisioning producing the fuel by using partial redox cycles and ceria-based reactive materials. The team will achieve unprecedented solar-to-fuel conversion efficiencies of more than 10% (where current state-of-the-art efficiency is 1%) by combined efforts and innovations in material development, and reactor design with effective heat recovery mechanisms and demonstration. This new technology will allow for the effective use of vast domestic solar resources to produce precursors to synthetic fuels that could replace gasoline.

  11. Estimating solar access of typical residential rooftops: A case study in San Jose, CA

    E-Print Network [OSTI]

    Levinson, Ronnen M

    2008-01-01T23:59:59.000Z

    solar-energy systems, including photovoltaic panels andsolar-energy systems, including photovoltaic panels and

  12. Passive Solar Space Heat | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories onFocusOski Energy LLCPascoag Utility District Jump to:Passive

  13. Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE

    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 SolarPVSolar Viewed as Triple

  14. Heating remote rooms in passive solar buildings

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1981-01-01T23:59:59.000Z

    Remote rooms can be effectively heated by convection through a connecting doorway. A simple steady-state equation is developed for design purposes. Validation of a dynamic model is achieved using data obtained over a 13-day period. Dynamic effects are investigated using a simulation analysis for three different cases of driving temperature; the effect is to reduce the temperature difference between the driving room and the remote room compared to the steady-state model. For large temperature swings in the driving room a strategy which uses the intervening door in a diode mode is effective. The importance of heat-storing mass in the remote room is investigated.

  15. Modeling the heating of the Green Energy Lab in Shanghai by the geothermal heat pump combined with the solar thermal energy and ground energy storage.

    E-Print Network [OSTI]

    Yu, Candice Yau May

    2012-01-01T23:59:59.000Z

    ?? This work involves the study of heating systems that combine solar collectors, geothermal heat pumps and thermal energy storage in the ground. Solar collectors… (more)

  16. (Solar clothes dryer and wastewater heat exchanger). Final report

    SciTech Connect (OSTI)

    Baer, B.F.

    1984-12-04T23:59:59.000Z

    The first project investigated the technical possibilities of adapting a domestic electric clothes dryer to utilize solar-heated water as the heat source, replacing electric resistance heat. The second project attempted to extract wastewater heat from a commercial dishwasher to preheat fresh water to be used in the next dish washing cycle. It is felt that the clothes dryer project has met all of intended goals. Although a solar application has some real-world practical problems, the application of a dryer connected directly to the home heating system will prove to be cost-beneficial over the life of a dryer. The additional cost of a heat exchanger is not excessive, and the installation cost, if installed with the initial house plumbing is less than $100. From a practical point of view, the complexity of installing a wastewater heat extracter is considered impractical. The environment in which such equipment must operate is difficult at best, and most restaurants prefer to maintain as simple an operation as possible. If problems were to occur in this type of equipment, the kitchen would effectively be crippled. In conclusion, further research in the concept is not recommended. Recent advances in commercial dishwashers have also considerably reduced the heat losses which accompanied equipment only a few years old.

  17. Solar heating and cooling demonstration project at the Florida Solar Energy Center

    SciTech Connect (OSTI)

    Hankins, J.D.

    1980-02-01T23:59:59.000Z

    The retrofitted solar heating and cooling system installed at the Florida Solar Energy Center is described. Information is provided on the system's test, operation, controls, hardware and installation, including detailed drawings. The Center's office building, approximately 5000 square feet of space, with solar air conditioning and heating as a demonstration of the technical feasibility is located just north of Port Canaveral, Florida. The system was designed to supply approximately 70% of the annual cooling and 100% of the heating load. The project provides unique high-temperature, non-imaging, non-tracking, evacuated-tube collectors. The design of the system was kept simple and employs five hydronic loops. They are energy collection, chilled water production, space cooling, space heating and energy rejection.

  18. Federal technology alert. Parabolic-trough solar water heating

    SciTech Connect (OSTI)

    NONE

    1998-04-01T23:59:59.000Z

    Parabolic-trough solar water heating is a well-proven renewable energy technology with considerable potential for application at Federal facilities. For the US, parabolic-trough water-heating systems are most cost effective in the Southwest where direct solar radiation is high. Jails, hospitals, barracks, and other facilities that consistently use large volumes of hot water are particularly good candidates, as are facilities with central plants for district heating. As with any renewable energy or energy efficiency technology requiring significant initial capital investment, the primary condition that will make a parabolic-trough system economically viable is if it is replacing expensive conventional water heating. In combination with absorption cooling systems, parabolic-trough collectors can also be used for air-conditioning. Industrial Solar Technology (IST) of Golden, Colorado, is the sole current manufacturer of parabolic-trough solar water heating systems. IST has an Indefinite Delivery/Indefinite Quantity (IDIQ) contract with the Federal Energy Management Program (FEMP) of the US Department of Energy (DOE) to finance and install parabolic-trough solar water heating on an Energy Savings Performance Contract (ESPC) basis for any Federal facility that requests it and for which it proves viable. For an ESPC project, the facility does not pay for design, capital equipment, or installation. Instead, it pays only for guaranteed energy savings. Preparing and implementing delivery or task orders against the IDIQ is much simpler than the standard procurement process. This Federal Technology Alert (FTA) of the New Technology Demonstration Program is one of a series of guides to renewable energy and new energy-efficient technologies.

  19. Effect of Heat and Electricity Storage and Reliability on Microgrid Viability: A Study of Commercial Buildings in California and New York States

    E-Print Network [OSTI]

    Stadler, Michael

    2009-01-01T23:59:59.000Z

    Solar thermal .DER available include solar thermal, photovoltaics (PV) and$/kW absorption chiller solar thermal photovoltaics Please

  20. An Improved Procedure for Developing a Calibrated Hourly Simulation Model of an Electrically Heated and Cooled Commercial Buildling

    E-Print Network [OSTI]

    Bou-Saada, Tarek Edmond

    lighting, energy efficient heat pumps, a photovoltaic system, envelope measures, and a solar domestic water heating system. To accomplish this, a DOE-2 baseline model was calibrated to the measured hourly data and compared to a building model constructed...

  1. Amorphous Silicon-Carbon Nanostructure Photovoltaic Devices

    E-Print Network [OSTI]

    Schriver, Maria Christine

    2012-01-01T23:59:59.000Z

    way to do better. A photovoltaic cell, or solar cell, is aFor this thesis, I made photovoltaic cells using a Schottkyphotovoltaic processes oc- cur in a Schottky barrier solar cell. . . . . . . . . . . . . . . . . .

  2. Photovoltaic cell efficiency at elevated temperatures

    E-Print Network [OSTI]

    Ray, Katherine Leung

    2010-01-01T23:59:59.000Z

    In order to determine what type of photovoltaic solar cell could best be used in a thermoelectric photovoltaic hybrid power generator, we tested the change in efficiency due to higher temperatures of three types of solar ...

  3. Solar Space Heat | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty Ltd Jump to:Information Silver Peak AreaOutlineSolarEnergySolaraka

  4. Solar Thermal Process Heat | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty Ltd Jump to:Information Silver PeakSystems Jump to: navigation,Solar

  5. Solar space heating | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty Ltd Jump to:Information Silver PeakSystems Jump to:JumpSolar powerfollowing

  6. NREL: Learning - Solar Process Heat Basics

    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 and Achievements ofLizResults InterpretingBiofuelsNationalSolar

  7. ENERGY-SPECIFIC SOLAR RADIATION DATA FROM MSG: CURRENT STATUS OF THE HELIOSAT-3 PROJECT

    E-Print Network [OSTI]

    Heinemann, Detlev

    ENERGY-SPECIFIC SOLAR RADIATION DATA FROM MSG: CURRENT STATUS OF THE HELIOSAT-3 PROJECT Marion Solar energy technologies such as photovoltaics, solar thermal power plants, passive solar heating and operating of solar energy systems and as basis data set for electricity load forecasting. Both long term

  8. Sandia National Laboratories: Solar Market Transformation

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

    Transformation * photovoltaic * Photovoltaics * PV * Renewable Energy * SAND 2011-4654W * Solar Energy * Solar Market Transformation * Solar Research Comments are closed. Renewable...

  9. Diamond-Like Carbon Coatings as Encapsulants for Photovoltaic Solar Cells

    SciTech Connect (OSTI)

    Pern, F. J.; Panosyan, Zh.; Gippius, A. A.; Kontsevoy, J. A.; Touryan, K.; Voskanyan, S.; Yengibaryan, Y.

    2005-02-01T23:59:59.000Z

    High-quality single-layer and bilayer diamond-like carbon (DLC) thin films are fabricated by two technologies, namely, ion-assisted plasma-enhanced deposition (IAPED) and electron cyclotron resonance (ECR) deposition. Deposition on various substrates, such as sapphires and solar cells, has been performed at low substrate temperatures (50 {approx} 80 C). The two deposition technologies allow good control over the growth conditions to produce DLC films with desired optical properties, thickness, and energy bandgap. The bilayer-structured DLC can be fabricated by using IAPED for the bottom layer followed by ECR for the top layer, or just by IAPED for both layers with different compositions. The DLC films have shown good spatial uniformity, density, microhardness, and adhesion strength. They exhibit excellent stability against attack by strong acids, prolonged damp-heat exposure at 85 C and 85% relative humidity, mechanical scratch, ultrasonication, and irradiation by ultraviolet (UV), protons, and electrons. When deposited on crystalline Si and GaAs solar cells in single-layer and/or bilayer structure, the DLC films not only serve as antireflection coating and protective encapsulant, but also improve the cell efficiencies.

  10. Solar Energy - Capturing and Using Power and Heat from the Sun...

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

    Solar Energy - Capturing and Using Power and Heat from the Sun Solar Energy - Capturing and Using Power and Heat from the Sun U.S. Department of Energy (DOE) Office of Energy...

  11. Solar space heating installed at Kansas City, Kansas. Final report

    SciTech Connect (OSTI)

    Not Available

    1981-05-01T23:59:59.000Z

    The solar energy system was constructed with the new 48,800 square feet warehouse to heat the warehouse area of about 39,000 square feet while the auxiliary energy system heats the office area of about 9800 square feet. The building is divided into 20 equal units, and each has its own solar system. The modular design permits the flexibility of combining multiple units to form offices or warehouses of various size floor areas as required by a tenant. Each unit has 20 collectors which are mounted in a single row. The collectors, manufactured by Solaron Corporation, are double glazed flat plate collectors with a gross area of 7800 ft/sup 2/. Air is heated either through the collectors or by the electric resistance duct coils. No freeze protection or storage is required for this system. Extracts from the site files, specifications, drawings, installation, operation and maintenance instructions are included.

  12. Photovoltaic cell assembly

    DOE Patents [OSTI]

    Beavis, Leonard C. (Albuquerque, NM); Panitz, Janda K. G. (Edgewood, NM); Sharp, Donald J. (Albuquerque, NM)

    1990-01-01T23:59:59.000Z

    A photovoltaic assembly for converting high intensity solar radiation into lectrical energy in which a solar cell is separated from a heat sink by a thin layer of a composite material which has excellent dielectric properties and good thermal conductivity. This composite material is a thin film of porous Al.sub.2 O.sub.3 in which the pores have been substantially filled with an electrophoretically-deposited layer of a styrene-acrylate resin. This composite provides electrical breakdown strengths greater than that of a layer consisting essentially of Al.sub.2 O.sub.3 and has a higher thermal conductivity than a layer of styrene-acrylate alone.

  13. Valuing the Time-Varying Electricity Production of Solar Photovoltaic Cells

    E-Print Network [OSTI]

    Borenstein, Severin

    2005-01-01T23:59:59.000Z

    value of power from solar panels in California, I ?nd thatthe valuation of power from solar panels could substantiallys incentive to install solar panels, but in section VII I

  14. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    Towards efficient hybrid solar cells based on fully polymerSariciftci, N. S. Hybrid solar cells, Inorg. Chim. Acta 361,Y. , Warta, W. , Dunlop, E.D. Solar cell efficiency table (

  15. NREL and Industry Advance Low-Cost Solar Water Heating R&D (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-08-01T23:59:59.000Z

    NREL and Rhotech develop cost-effective solar water heating prototype to rival natural gas water heater market.

  16. INTERACTION OF A SOLAR SPACE HEATING SYSTEM WITH THE THERMAL BEHAVIOR OF A BUILDING

    E-Print Network [OSTI]

    Vilmer, Christian

    2013-01-01T23:59:59.000Z

    solar con- trols test facility at Lawrence Berkeley Laboratory The interaction of baseboard, radiant panel, and furnace heating

  17. Micro-Columnated Loop Heat Pipe: The Future of Electronic Substrates

    E-Print Network [OSTI]

    Dhillon, Navdeep Singh

    2012-01-01T23:59:59.000Z

    cooling of concentrating photovoltaic cells. In Photovoltaic31] B. Siegal. Solar photovoltaic cell thermal measurementof cooling concentrating photovoltaic cells using a copper/

  18. Solar-powered turbocompressor heat pump system

    DOE Patents [OSTI]

    Landerman, A.M.; Biancardi, F.R.; Melikian, G.; Meader, M.D.; Kepler, C.E.; Anderson, T.J.; Sitler, J.W.

    1982-08-12T23:59:59.000Z

    The turbocompressor comprises a power turbine and a compressor turbine having respective rotors and on a common shaft, rotatably supported by bearings. A first working fluid is supplied by a power loop and is expanded in the turbine. A second working fluid is compressed in the turbine and is circulated in a heat pump loop. A lubricant is mixed with the second working fluid but is excluded from the first working fluid. The bearings are cooled and lubricated by a system which circulates the second working fluid and the intermixed lubricant through the bearings. Such system includes a pump, a thermostatic expansion valve for expanding the working fluid into the space between the bearings, and a return conduit system for withdrawing the expanded working fluid after it passes through the bearings and for returning the working fluid to the evaporator. A shaft seal excludes the lubricant from the power turbine. The power loop includes a float operable by liquid working fluid in the condenser for controlling a recirculation valve so as to maintain a minimum liquid level in the condenser, while causing a feed pump to pump most of the working fluid into the vapor generator. The heat pump compressor loop includes a float in the condenser for operating and expansion valve to maintain a minimum liquid working fluid level in the condenser while causing most of the working fluid to be expanded into the evaporator.

  19. 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)

  20. Testing of Stirling engine solar reflux heat-pipe receivers

    SciTech Connect (OSTI)

    Rawlinson, S.; Cordeiro, P.; Dudley, V.; Moss, T.

    1993-07-01T23:59:59.000Z

    Alkali metal heat-pipe receivers have been identified as a desirable interface to couple a Stirling-cycle engine with a parabolic dish solar concentrator. The reflux receiver provides power nearly isothermally to the engine heater heads while de-coupling the heater head design from the solar absorber surface design. The independent design of the receiver and engine heater head leads to high system efficiency. Heat pipe reflux receivers have been demonstrated at approximately 30 kW{sub t} power throughput by others. This size is suitable fm engine output powers up to 10 kW{sub e}. Several 25-kW{sub e}, Stirling-cycle engines exist, as well as designs for 75-kW{sub t} parabolic dish solar concentrators. The extension of heat pipe technology from 30 kW{sub t} to 75 kW{sub t} is not trivial. Heat pipe designs are pushed to their limits, and it is critical to understand the flux profiles expected from the dish, and the local performance of the wick structure. Sandia has developed instrumentation to monitor and control the operation of heat pipe reflux receivers to test their throughput limits, and analytical models to evaluate receiver designs. In the past 1.5 years, several heat pipe receivers have been tested on Sandia`s test bed concentrators (TBC`s) and 60-kW{sub t} solar furnace. A screen-wick heat pipe developed by Dynatherm was tested to 27.5 kW{sub t} throughput. A Cummins Power Generation (CPG)/Thermacore 30-kW{sub t} heat pipe was pushed to a throughput of 41 kW{sub t} to verify design models. A Sandia-design screen-wick and artery 75-kW{sub t} heat pipe and a CPG/Thermacore 75-kW{sub t} sintered-wick heat pipe were also limit tested on the TBC. This report reviews the design of these receivers, and compares test results with model predictions.

  1. Joule Heating and Anomalous Resistivity in the Solar Corona

    E-Print Network [OSTI]

    Steven R. Spangler

    2008-12-22T23:59:59.000Z

    Recent radioastronomical observations of Faraday rotation in the solar corona can be interpreted as evidence for coronal currents, with values as large as $2.5 \\times 10^9$ Amperes (Spangler 2007). These estimates of currents are used to develop a model for Joule heating in the corona. It is assumed that the currents are concentrated in thin current sheets, as suggested by theories of two dimensional magnetohydrodynamic turbulence. The Spitzer result for the resistivity is adopted as a lower limit to the true resistivity. The calculated volumetric heating rate is compared with an independent theoretical estimate by Cranmer et al (2007). This latter estimate accounts for the dynamic and thermodynamic properties of the corona at a heliocentric distance of several solar radii. Our calculated Joule heating rate is less than the Cranmer et al estimate by at least a factor of $3 \\times 10^5$. The currents inferred from the observations of Spangler (2007) are not relevant to coronal heating unless the true resistivity is enormously increased relative to the Spitzer value. However, the same model for turbulent current sheets used to calculate the heating rate also gives an electron drift speed which can be comparable to the electron thermal speed, and larger than the ion acoustic speed. It is therefore possible that the coronal current sheets are unstable to current-driven instabilities which produce high levels of waves, enhance the resistivity and thus the heating rate.

  2. Radiative Impacts on the Growth of Drops within Simulated Marine Stratocumulus. Part I: Maximum Solar Heating

    E-Print Network [OSTI]

    Harrington, Jerry Y.

    November 2004) ABSTRACT The effects of solar heating and infrared cooling on the vapor depositional growth of as much as 45 min. Including infrared cooling as well as solar heating in the LES and microphysical bin Solar Heating CHRISTOPHER M. HARTMAN AND JERRY Y. HARRINGTON Department of Meteorology, The Pennsylvania

  3. 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.

  4. European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 2DO.1.6 BULK LIFETIME ENHANCEMENT BY FIRING STEPS

    E-Print Network [OSTI]

    25th European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 2DO.1.6 1 to getter metallic impurities and firing of silicon nitride (SiN) to induce hydrogen passivation. We analyse impurities and hydrogen bulk passivation, respectively. Additionally, the fired SiN layers have to ensure

  5. European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 2BO.3.1 ELECTRON AND HOLE MOBILITY REDUCTION AND HALL FACTOR IN PHOSPHORUS-

    E-Print Network [OSTI]

    25th European Photovoltaic Solar Energy Conference, Valencia, Spain, 6-10 September 2010, 2BO.3.1 1 of Engineering, The Australian National University, Canberra, ACT 0200, Australia 2 Department of Electronic Materials Engineering, The Australian National University, Canberra ACT 0200, Australia 3 Institut für

  6. Compressive turbulent cascade and heating in the solar wind

    SciTech Connect (OSTI)

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

    2010-03-25T23:59:59.000Z

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

  7. List of Solar Pool Heating Incentives | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofs IncentivesList

  8. List of Solar Thermal Process Heat Incentives | Open Energy Information

    Open Energy Info (EERE)

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

  9. List of Solar Water Heat Incentives | Open Energy Information

    Open Energy Info (EERE)

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

  10. The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power

    E-Print Network [OSTI]

    Marnay, Chris

    2010-01-01T23:59:59.000Z

    Environmental Value of Solar Thermal Systems in MicrogridsEnvironmental Value of Solar Thermal Systems in Microgridsa) ABSTRACT The addition of solar thermal and heat storage

  11. Photovoltaics for Residential Buildings Webinar

    Broader source: Energy.gov [DOE]

    A webinar by National Renewable Energy Laboratory (NREL) Senior Engineer Otto VanGeet on using solar photovoltaic (PV) systems to provide electricity for homes.

  12. A Wavelet-Based Variability Model (WVM) for Solar PV Power Plants

    E-Print Network [OSTI]

    Lave, Matthew; Kleissl, Jan; Stein, Joshua S

    2013-01-01T23:59:59.000Z

    simulating solar photovoltaic (PV) power plant output givenfor simulating the power output of a solar photovoltaic (PV)

  13. Planar micro-optic solar concentration

    E-Print Network [OSTI]

    Karp, Jason Harris

    2010-01-01T23:59:59.000Z

    trend towards high-efficiency photovoltaics involves multi-efficiency tables (version 35), "Progress in Photovoltaics:efficiency solar cell modules," Progress in Photovoltaics:

  14. Copper oxide/N-silicon heterojunction photovoltaic device

    DOE Patents [OSTI]

    Feng, Tom (Morris Plains, NJ); Ghosh, Amal K. (New Providence, NJ)

    1982-01-01T23:59:59.000Z

    A photovoltaic device having characteristics of a high efficiency solar cell comprising a Cu.sub.x O/n-Si heterojunction. The Cu.sub.x O layer is formed by heating a deposited copper layer in an oxygen containing ambient.

  15. Market development directory for solar industrial process heat systems

    SciTech Connect (OSTI)

    None

    1980-02-01T23:59:59.000Z

    The purpose of this directory is to provide a basis for market development activities through a location listing of key trade associations, trade periodicals, and key firms for three target groups. Potential industrial users and potential IPH system designers were identified as the prime targets for market development activities. The bulk of the directory is a listing of these two groups. The third group, solar IPH equipment manufacturers, was included to provide an information source for potential industrial users and potential IPH system designers. Trade associates and their publications are listed for selected four-digit Standard Industrial Code (SIC) industries. Since industries requiring relatively lower temperature process heat probably will comprise most of the near-term market for solar IPH systems, the 80 SIC's included in this chapter have process temperature requirements less than 350/sup 0/F. Some key statistics and a location list of the largest plants (according to number of employees) in each state are included for 15 of the 80 SIC's. Architectural/engineering and consulting firms are listed which are known to have solar experience. Professional associated and periodicals to which information on solar IPH sytstems may be directed also are included. Solar equipment manufacturers and their associations are listed. The listing is based on the SERI Solar Energy Information Data Base (SEIDB).

  16. Performance studies of a solar energy storing heat exchanger

    SciTech Connect (OSTI)

    Bushnell, D.L. (Northern Illinois Univ., DeKalb (USA))

    1988-01-01T23:59:59.000Z

    The design, construction, and performance of a solar energy storing heat exchanger is presented as a step toward a solar cooking concept. The solid-solid transition of pentaerythritol is the principal mechanism for energy storage. The methods for describing the system performance are explained and applied to a test system containing a controllable replacement for the solar input power. This first stage of the project will be followed by another in which the heat exchanger is connected to a concentrating array of CPC cylindrical troughs. Although a size appropriate to commercial cooking may prove easier to design from the point of view of economics in the US, the system discussed herein is sized for domestic use and addresses the question of what solar collector area and PCM mass are needed in order to provide adequate energy for several family-size meals with sufficient storage to cook at night and one or two days later. The performance is described from efficiency measurements and the determination of a figure of merit.

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

    SciTech Connect (OSTI)

    Roberts, B.

    2011-07-01T23:59:59.000Z

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

  18. Feasibility Study of Economics and Performance of Solar Photovoltaics at the Stringfellow Superfund Site in Riverside, California

    SciTech Connect (OSTI)

    Mosey, G.; Van Geet, O.

    2010-12-01T23:59:59.000Z

    This report presents the results of an assessment of the technical and economic feasibility of deploying a photovoltaics (PV) system on the Stringfellow Superfund Site in Riverside, California. The site was assessed for possible PV installations. The cost, performance, and site impacts of different PV options were estimated. The economics of the potential systems were analyzed using an electric rate of $0.13/kWh and incentives offered by Southern California Edison under the California Solar Initiative. According to the assessment, a government-owned, ground-mounted PV system represents a technically and economically feasible option. The report recommends financing options that could assist in the implementation of such a system.

  19. Solar resource-utility load matching assessment: NREL photovoltaic project summary

    SciTech Connect (OSTI)

    none,

    1993-11-01T23:59:59.000Z

    Many utility planners may be unfamiliar with the potential for the development of photovoltaics (PV) in their service areas. The goal of the research summarized in this document is to provide information on the match existing between the output of PV powder plants and the load requirements of US utilities. This material indicates whether or not the effective capacity (hence the value) of this renewable resource should be higher than that traditionally assigned to an intermittent resource.

  20. Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    Solar energy has emerged as one of the most rapidly growing renewable sources of electricity due to several advantages: (

  1. Progress Energy Florida- SunSense Solar Photovoltaics Rebate Program (Florida)

    Broader source: Energy.gov [DOE]

    '''''All funds for Progress Energy Florida's SunSense Solar PV Rebate program have been committed at this time.'''''

  2. Photovoltaic Cell Performance Basics

    Broader source: Energy.gov [DOE]

    Photovoltaic (PV), or solar cells use the energy in sunlight to produce electricity. However, the amount of electricity produced depends on the quality of the light available and the performance of the PV cell.

  3. Three-dimensional photovoltaics

    E-Print Network [OSTI]

    Myers, Bryan

    The concept of three-dimensional (3D) photovoltaics is explored computationally using a genetic algorithm to optimize the energy production in a day for arbitrarily shaped 3D solar cells confined to a given area footprint ...

  4. Ligand chemistry of titania precursor affects transient photovoltaic behavior in inverted organic solar cells

    E-Print Network [OSTI]

    Hone, James

    solar cells Jong Bok Kim, Seokhoon Ahn, Seok Ju Kang, Colin Nuckolls, and Yueh-Lin Loo Citation: Appl Institute of Physics. Related Articles A ferroelectric­semiconductor-coupled solar cell with tunable electrodeposited Cu(In,Ga)Se2 solar cells: Application for non-destructive defect assessment Appl. Phys. Lett. 102

  5. Heating of the magnetized solar chromosphere by partial ionization effects

    E-Print Network [OSTI]

    Khomenko, Elena

    2011-01-01T23:59:59.000Z

    In this paper, we study the heating of the magnetized solar chromosphere induced by the large fraction of neutral atoms present in this layer. The presence of neutrals, together with the decrease with height of the collisional coupling, leads to deviations from the classical MHD behavior of the chromospheric plasma. A relative net motion appears between the neutral and ionized components, usually referred to as ambipolar diffusion. The dissipation of currents in the chromosphere is enhanced orders of magnitude due to the action of ambipolar diffusion, as compared to the standard ohmic diffusion. We propose that a significant amount of magnetic energy can be released to the chromosphere just by existing force-free 10--40 G magnetic fields there. As a consequence, we conclude that ambipolar diffusion is an important process that should be included in chromospheric heating models, as it has the potential to rapidly heat the chromosphere. We perform analytical estimations and numerical simulations to prove this i...

  6. Synthesis and photovoltaic application of coper (I) sulfide nanocrystals

    E-Print Network [OSTI]

    Wu, Yue

    2008-01-01T23:59:59.000Z

    polymer hybrid photovoltaic cells. Appl. Phys. Lett. 88,S-CdS heterojunction photovoltaic cells. J. Appl. Phys. 45,photovoltaic devices, such as dye-sensitized solar cells 1-

  7. Femtosecond laser processing of photovoltaic and transparent materials

    E-Print Network [OSTI]

    Ahn, Sanghoon

    2013-01-01T23:59:59.000Z

    20%  efficiency.  Progress  in  Photovoltaics.  2004;12:efficiency   tables  (version  39).  Progress  in  Photovoltaics.  efficiency   for   Cu(In,Ga)Se-­?2   thin-­?film   solar   cells   beyond   20%.   Progress   in   Photovoltaics.  

  8. Solar For Schools: A Case Study in Identifying and Implementing Solar Photovoltaic (PV) Projects in Three California School Districts: Preprint

    SciTech Connect (OSTI)

    Kandt, A.

    2011-04-01T23:59:59.000Z

    The Department of Energy's (DOE) Solar America Showcase program seeks to accelerate demand for solar technologies among key end use market sectors. As part of this activity the DOE provides Technical Assistance through its national laboratories to large-scale, high-visibility solar installation projects. The Solar Schools Assessment and Implementation Project (SSAIP) in the San Francisco Bay area was selected for a 2009 DOE Solar American Showcase award. SSAIP was formed through the efforts of the nonprofit Sequoia Foundation and includes three school districts: Berkeley, West Contra Costa, and Oakland Unified School Districts. This paper summarizes the technical assistance efforts that resulted from this technical assistance support. It serves as a case study and reference document detailing the steps and processes that could be used to successfully identify, fund, and implement solar PV projects in school districts across the country.

  9. Heat Pipe Performance Enhancement with Binary Mixture Fluids that Exhibit Strong Concentration Marangoni Effects

    E-Print Network [OSTI]

    Armijo, Kenneth Miguel

    2011-01-01T23:59:59.000Z

    68] Kalogirou, S. , 2004, “Solar thermal collectors andsilicon photovoltaic and thermal solar collector”, Solarevaluation of solar photovoltaic/thermal systems”, Solar

  10. A performance data network for solar process heat systems

    SciTech Connect (OSTI)

    Barker, G.; Hale, M.J.

    1996-03-01T23:59:59.000Z

    A solar process heat (SPH) data network has been developed to access remote-site performance data from operational solar heat systems. Each SPH system in the data network is outfitted with monitoring equipment and a datalogger. The datalogger is accessed via modem from the data network computer at the National Renewable Energy Laboratory (NREL). The dataloggers collect both ten-minute and hourly data and download it to the data network every 24-hours for archiving, processing, and plotting. The system data collected includes energy delivered (fluid temperatures and flow rates) and site meteorological conditions, such as solar insolation and ambient temperature. The SPH performance data network was created for collecting performance data from SPH systems that are serving in industrial applications or from systems using technologies that show promise for industrial applications. The network will be used to identify areas of SPH technology needing further development, to correlate computer models with actual performance, and to improve the credibility of SPH technology. The SPH data network also provides a centralized bank of user-friendly performance data that will give prospective SPH users an indication of how actual systems perform. There are currently three systems being monitored and archived under the SPH data network: two are parabolic trough systems and the third is a flat-plate system. The two trough systems both heat water for prisons; the hot water is used for personal hygiene, kitchen operations, and laundry. The flat plate system heats water for meat processing at a slaughter house. We plan to connect another parabolic trough system to the network during the first months of 1996. We continue to look for good examples of systems using other types of collector technologies and systems serving new applications (such as absorption chilling) to include in the SPH performance data network.

  11. Mortgage default and student outcomes, the solar home price premium, and the magnitude of housing price declines

    E-Print Network [OSTI]

    Dastrup, Samuel R.

    2011-01-01T23:59:59.000Z

    The market value and cost of solar photovoltaic electricityfinds that the cost of a solar photovoltaic system is about

  12. 64 kW concentrator Photovoltaics Application Test Center. Volume. Final report

    SciTech Connect (OSTI)

    Jardine, D.M.; Jones, D.W.

    1980-06-01T23:59:59.000Z

    Kaman Sciences Corporation has designed a 64 kW Concentrating Photovoltaic Applications Test Center (APTEC). The APTEC employs a combined concentrating photovoltaic array in a total energy system application for load sharing the electric and thermal demands of a large computer center with the interfaced electric and natural gas utility. The photovoltaic array is composed of two-axis tracking heliostats of Fresnel lens concentrating, silicon solar cell modules. The modules are cooled with a fluid which transfers heat to a ground coupled heat sink/storage unit for subsequent use in meeting the computer center's thermal load demand. The combined photovoltaic power system shares basic components - a power conditioning unit, batteries and thermal conditioning equipment - with the electric and natural gas utility service, improving the computer center's operating availability time and displacing a portion of the fossil fuel required to power the computer center with solar energy. The detailed system design is reported.

  13. Survey of Climate Conditions for Demonstration of a Large Scale of Solar Energy Heating in Xi'an

    E-Print Network [OSTI]

    Li, A.; Liu, Y.

    2006-01-01T23:59:59.000Z

    -scale solar energy heating applications in urban residential buildings. In this paper, Xi'an's geographical situation and climate conditions are fully analyzed. The survey on solar energy resources, and the feasibility of solar energy heating on a large scale...

  14. Probing Nanostructures for Photovoltaics: Using atomic force microscopy and other tools to characterize nanoscale materials for harvesting solar energy

    E-Print Network [OSTI]

    Zaniewski, Anna Monro

    2012-01-01T23:59:59.000Z

    v List of Tables vii 1 Introduction 1.1 Photovoltaicsand J. V. Manca. Prog. Photovoltaics Res. Appl. , 15:713,polymer blends. Prog. Photovoltaics Res. Appl. , 15:727,

  15. SOLAR HEAT GAIN THROUGH FENESTRATION SYSTEMS CONTAINING SHADING: PROCEDURES FOR ESTIMATING

    E-Print Network [OSTI]

    SOLAR HEAT GAIN THROUGH FENESTRATION SYSTEMS CONTAINING SHADING: PROCEDURES FOR ESTIMATING that with a drastic simplifying assumption these methods can be used to calculate system solar-optical properties and solar heat gain coefficients for arbitrary glazing systems, while requiring limited data about

  16. SOLAR HEAT GAIN THROUGH FENESTRATION SYSTEMS CONTAINING SHADING: SUMMARY OF PROCEDURES FOR

    E-Print Network [OSTI]

    SOLAR HEAT GAIN THROUGH FENESTRATION SYSTEMS CONTAINING SHADING: SUMMARY OF PROCEDURES that with a drastic simplifying assumption these methods can be used to calculate system solar-optical properties and solar heat gain coefficients for arbitrary glazing systems, while requiring limited data about

  17. Solar heating and cooling of residential buildings: sizing, installation and operation of systems. 1980 edition

    SciTech Connect (OSTI)

    None

    1980-09-01T23:59:59.000Z

    This manual was prepared as a text for a training course on solar heating and cooling of residential buildings. The course and text are directed toward sizing, installation, operation, and maintenance of solar systems for space heating and hot water supply, and solar cooling is treated only briefly. (MHR)

  18. Solar water heating technical support. Technical report for November 1997--April 1998 and final report

    SciTech Connect (OSTI)

    Huggins, J.

    1998-10-01T23:59:59.000Z

    This progress report covers the time period November 1, 1997 through April 30, 1998, and also summarizes the project as the final report. The topics of the report include certification of solar collectors for water heating systems, modeling and testing of solar collectors and gas water heater backup systems, ratings of collectors for specific climates, and solar pool heating systems.

  19. Coat Color and Solar Heat Gain in Animals Author(s): Glenn E. Walsberg

    E-Print Network [OSTI]

    Cavitt, John F.

    when exposed to solar radiation than do light surfaces. For ani- mals such as birds or mammalsCoat Color and Solar Heat Gain in Animals Author(s): Glenn E. Walsberg Source: BioScience, Vol. 33://www.jstor.org #12;Coat Color and Solar Heat Gain in Animals Glenn E. Walsberg The relationbetween coat color

  20. Methanol-based heat pump for solar heating, cooling, and storage. Phase III. Final report

    SciTech Connect (OSTI)

    Offenhartz, P O'D; Rye, T V; Malsberger, R E; Schwartz, D

    1981-03-01T23:59:59.000Z

    The reaction of CH/sub 3/OH vapor with solid (pellet) CaCl/sub 2/ to form the solid phase compound CaCll/sub 2/ . 2CH/sub 3/OH can be used as the basis of a combined solar heat pump/thermal energy storage system. Such a system is capable of storing heat indefinitely at ambient temperature, and can be used for space and domestic hot water heating, and for air conditioning with forced air (dry) heat rejection. It combines all features required of a residential or commercial space conditioning system except for solar collection. A detailed thermal analysis shows that the coefficient of performance for heating is greater than 1.5, and for cooling, greater than 0.5. This has been confirmed by direct experimental measurement on an engineering development test unit (EDTU). The experimental rate of CH/sub 3/OH absorption is a strong function of the absorber-evaporator temperature difference. The minimum practical hourly rate, 0.10 moles CH/sub 3/OH per mole CaCl/sub 2/, was observed with the salt-bed heat transfer fluid at 40/sup 0/C and the CH/sub 3/OH evaporator at -15/sup 0/C. a detailed performance and economic analysis was carried out for a system operated in Washington, DC. With 25 square meters of evacuated tube solar collectors, the CaCl/sub 2/-CH/sub 3/OH chemical heat pump should be capable of meeting over 90% of the cooling load, 80% of the heating load, and 70% of the domestic hot water load with nonpurchased energy in a typical well-insulated single family residence, thus saving about $600 per year. In small-scale production, the installed cost of the system, including solar collectors and backup, is estimated to be about $10,000 greater than a conventional heating and cooling system, and a much lower cost should be possible in the longer term.

  1. Banking on Solar: An Analysis of Banking Opportunities in the U.S. Distributed Photovoltaic Market

    SciTech Connect (OSTI)

    Feldman, D.; Lowder, T.

    2014-11-01T23:59:59.000Z

    This report provides a high-level overview of the developing U.S. solar loan product landscape, from both a market and economic perspective. It covers current and potential U.S. solar lending institutions; currently available loan products; loan program structures and post-loan origination options; risks and uncertainties of the solar asset class as it pertains to lenders; and an economic analysis comparing loan products to third party-financed systems in California.

  2. Distributed Solar Photovoltaics for Electric Vehicle Charging: Regulatory and Policy Considerations (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2014-09-01T23:59:59.000Z

    Increasing demand for electric vehicle (EV) charging provides an opportunity for market expansion of distributed solar technology. A major barrier to the current deployment of solar technology for EV charging is a lack of clear information for policy makers, utilities and potential adopters. This paper introduces the pros and cons of EV charging during the day versus at night, summarizes the benefits and grid implications of combining solar and EV charging technologies, and offers some regulatory and policy options available to policy makers and regulators wanting to incentivize solar EV charging.

  3. The Solar Energy Consortium of New York Photovoltaic Research and Development Center

    SciTech Connect (OSTI)

    Klein, Petra M.

    2012-10-15T23:59:59.000Z

    Project Objective: To lead New York State to increase its usage of solar electric systems. The expected outcome is that appropriate technologies will be made available which in turn will help to eliminate barriers to solar energy usage in New York State. Background: The Solar Energy Consortium has been created to lead New York State research on solar systems specifically directed at doubling the efficiency, halving the cost and reducing the cost of installation as well as developing unique form factors for the New York City urban environment.

  4. Impact of Solar Resource and Atmospheric Constituents on Energy Yield Models for Concentrated Photovoltaic Systems .

    E-Print Network [OSTI]

    Mohammed, Jafaru

    2013-01-01T23:59:59.000Z

    ??Global economic trends suggest that there is a need to generate sustainable renewable energy to meet growing global energy demands. Solar energy harnessed by concentrated… (more)

  5. Solar Photovoltaic Financing: Deployment on Public Property by State and Local Governments

    Broader source: Energy.gov [DOE]

    This report examines ways that state and local governments can optimize the financial structure of deploying solar PV for public uses.

  6. Solar Congeneration for Commercial Rooftops

    E-Print Network [OSTI]

    Gupta, A.

    2013-01-01T23:59:59.000Z

    Solar Cogeneration for Commercial Rooftops Arun Gupta, PhD agupta@skyentechnologies.com ESL-KT-13-12-36 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16-18 Introduction What is Solar Cogeneration? ? Fun fact...: Typical photovoltaic (PV) solar panels waste roughly 85% of their energy as heat ? Q: Why not capture that heat and use it to heat water? What is Concentrating Solar? ? Using mirrors or lenses to concentrate sunlight ? Why? Less PV material, higher...

  7. U.S. Solar Market Trends

    SciTech Connect (OSTI)

    Larry Sherwood

    2011-04-01T23:59:59.000Z

    2010 marked the emergence of the utility sector photovoltaic market. Utility sector photovoltaic installations quadrupled over 2009 installations. The share of utility sector installations of all U.S. grid-connected PV installations grew from virtually none in 2006 to 15 percent in 2009 and 32 percent in 2010. In addition, 2010 saw installation of a 75 MWAC concentrating solar power plant, the largest installed in the U.S. since 1991. In 2010, annual distributed grid-connected PV installations in the United States grew by 62 percent, to 606 MWDC. Photovoltaic arrays were installed at more than 50,000 sites in 2010, a 45 percent increase over the number of installations in 2009. Solar water heating installations increased by 6 percent in 2010, compared with 2009. Solar water heating has shown only two years of higher growth in the last 10 years. Solar pool heating installations increased by 13 percent in 2010, the largest growth in five years.

  8. A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System

    E-Print Network [OSTI]

    California at Berkeley, University of

    A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System Combined Heat and Power System by Zachary Mills Norwood Doctor of Philosophy in the Energy and Resources of analysis of Distributed Concentrating Solar Combined Heat and Power (DCS-CHP) systems is a design

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

    E-Print Network [OSTI]

    Oughton, Sean

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

  10. Self-Regulation of Solar Coronal Heating Process via the Collisionless Reconnection Condition Dmitri A. Uzdensky*

    E-Print Network [OSTI]

    Self-Regulation of Solar Coronal Heating Process via the Collisionless Reconnection Condition December 2007) I propose a new paradigm for solar coronal heating viewed as a self-regulating process the main heating process in this model is magnetic reconnection, I will first summarize the recent progress

  11. Heat Transfer in Buildings: Application to Solar Air Collector and Trombe Wall Design

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    11 Heat Transfer in Buildings: Application to Solar Air Collector and Trombe Wall Design H. Boyer focuses on the modeling of Trombe solar walls. In each case, detailed modeling of heat transfer allows with same thermal behaviour). For heat conduction in walls, it results from electrical analogy

  12. Durability of Materials in a Stress-Response Framework: Acrylic Materials for Photovoltaic Systems

    E-Print Network [OSTI]

    Rollins, Andrew M.

    Durability of Materials in a Stress-Response Framework: Acrylic Materials for Photovoltaic Systems materials for enhanced photovoltaic (PV) performance, it is critical to have quantitative knowledge developed for solar radiation durability studies of solar and environmentally exposed photovoltaic materials

  13. Theoretical study of gas heated in a porous material subjected to a concentrated solar radiation (*)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    W solar furnace of Solar Energy Laboratory in Odeillo (France). Revue Phys. Appl. 15 (1980) 423-426 MARS423 Theoretical study of gas heated in a porous material subjected to a concentrated solar exposed to the solar radiation. These quantities may be expressed in any set consistent units. 1

  14. Transparent heat-spreader for optoelectronic applications

    DOE Patents [OSTI]

    Minano, Juan Carlos; Benitez, Pablo

    2014-11-04T23:59:59.000Z

    An optoelectronic cooling system is equally applicable to an LED collimator or a photovoltaic solar concentrator. A transparent fluid conveys heat from the optoelectronic chip to a hollow cover over the system aperture. The cooling system can keep a solar concentrator chip at the same temperature as found for a one-sun flat-plate solar cell. Natural convection or forced circulation can operate to convey heat from the chip to the cover.

  15. Method and apparatus for uniformly concentrating solar flux for photovoltaic applications

    DOE Patents [OSTI]

    Jorgensen, Gary J. (Pine, CO); Carasso, Meir (Lakewood, CO); Wendelin, Timothy J. (Golden, CO); Lewandowski, Allan A. (Evergreen, CO)

    1992-01-01T23:59:59.000Z

    A dish reflector and method for concentrating moderate solar flux uniformly on a target plane on a solar cell array, the dish having a stepped reflective surface that is characterized by a plurality of ring-like segments arranged about a common axis, and each segment having a concave spherical configuration.

  16. Valuing the Time-Varying Electricity Production of Solar Photovoltaic Cells

    E-Print Network [OSTI]

    Borenstein, Severin

    2005-01-01T23:59:59.000Z

    solar panels as the customer would receive if it faced the actual wholesale real-time prices.price valuation. Omitting the correction for unobserved correlation between solar panelsolar panels if they are on a ?at-rate tari? with the value they would receive if they faced real-time prices

  17. Optimization of storage in passive solar heating systems. Final report

    SciTech Connect (OSTI)

    Bahm, R.J.

    1980-05-01T23:59:59.000Z

    The search for a simple method of estimating the optimum amount of storage for passive solar space heating system designs and the results of that search are described. The project goals, and why the project is important are described. The major project results are presented in the order of their importance with respect to meeting the project goal. A narrative description of the project is given. Here the various approaches attempted are described, giving the reasons for failure in those areas that were not successful. The Appendices contain the bulk of data generated by this project. Most of the data is presented in graphical form. (MHR)

  18. Effect of plants on sunspace passive solar heating

    SciTech Connect (OSTI)

    Best, E.D.; McFarland, R.D.

    1985-01-01T23:59:59.000Z

    The effect of plants on sunspace thermal performance is investigated, based on experiments done in Los Alamos using two test rooms with attached sunspaces, which were essentially identical except for the presence of plants in one. Performance is related to plant transpiration, evaporation from the soil, condensation on the glazing and the absorbtance of solar energy by the lightweight leaves. Performance effects have been quantified by measurements of auxiliary heat consumption in the test rooms and analyzed by means of energy balance calculations. A method for estimating the transpiration rate is presented.

  19. Heat Transfer and Latent Heat Storage in Inorganic Molten Salts for Concentrating Solar Power Plants

    SciTech Connect (OSTI)

    Mathur, Anoop [Terrafore Inc.] [Terrafore Inc.

    2013-08-14T23:59:59.000Z

    A key technological issue facing the success of future Concentrating Solar Thermal Power (CSP) plants is creating an economical Thermal Energy Storage (TES) system. Current TES systems use either sensible heat in fluids such as oil, or molten salts, or use thermal stratification in a dual-media consisting of a solid and a heat-transfer fluid. However, utilizing the heat of fusion in inorganic molten salt mixtures in addition to sensible heat , as in a Phase change material (PCM)-based TES, can significantly increase the energy density of storage requiring less salt and smaller containers. A major issue that is preventing the commercial use of PCM-based TES is that it is difficult to discharge the latent heat stored in the PCM melt. This is because when heat is extracted, the melt solidifies onto the heat exchanger surface decreasing the heat transfer. Even a few millimeters of thickness of solid material on heat transfer surface results in a large drop in heat transfer due to the low thermal conductivity of solid PCM. Thus, to maintain the desired heat rate, the heat exchange area must be large which increases cost. This project demonstrated that the heat transfer coefficient can be increase ten-fold by using forced convection by pumping a hyper-eutectic salt mixture over specially coated heat exchanger tubes. However,only 15% of the latent heat is used against a goal of 40% resulting in a projected cost savings of only 17% against a goal of 30%. Based on the failure mode effect analysis and experience with pumping salt at near freezing point significant care must be used during operation which can increase the operating costs. Therefore, we conclude the savings are marginal to justify using this concept for PCM-TES over a two-tank TES. The report documents the specialty coatings, the composition and morphology of hypereutectic salt mixtures and the results from the experiment conducted with the active heat exchanger along with the lessons learnt during experimentation.

  20. Georgia Power- Residential Solar and Heat Pump Water Heater Rebate (Georgia)

    Broader source: Energy.gov [DOE]

    Georgia Power customers may be eligible for rebates up to $250 each toward the installation costs of a 50 gallon or greater solar water heater or heat pump water heater. The solar water heater or...

  1. 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...

  2. Integration and Optimization of Trigeneration Systems with Solar Energy, Biofuels, Process Heat and Fossil Fuels

    E-Print Network [OSTI]

    Tora, Eman

    2012-02-14T23:59:59.000Z

    at developing a systematic approach to integrate solar energy into industrial processes to drive thermal energy transfer systems producing power, cool, and heat. Solar energy is needed to be integrated with other different energy sources (biofuels, fossil fuels...

  3. A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System

    E-Print Network [OSTI]

    Norwood, Zachary Mills

    2011-01-01T23:59:59.000Z

    solar CHP system supplying arbitrary heat and power outputs.e Electrical power output of system Q Solar CHP to PV yearlysolar Rankine CHP system, sized equally in terms of peak power output,

  4. DETAILED LOOP MODEL (DLM) ANALYSIS OF LIQUID SOLAR THERMOSIPHONS WITH HEAT EXCHANGERS

    E-Print Network [OSTI]

    Mertol, A.

    2013-01-01T23:59:59.000Z

    a Collector- Cum-Storage Type of ar Water Heater, 11 SolarSolar Water Heater of the Combined Collector and Storagethermosiphon water heaters with heat exchangers in storage

  5. Transient-heat-transfer and stress analysis of a thermal-storage solar cooker module

    E-Print Network [OSTI]

    Zengeni, Hazel C

    2014-01-01T23:59:59.000Z

    This paper details the analysis carried out in Solidworks to determine the best material and configuration of a thermal-storage solar cooker module.The thermal-storage solar cooker utilizes the high-latent-heat lithium ...

  6. ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS

    SciTech Connect (OSTI)

    DeScioli, Derek

    2013-06-01T23:59:59.000Z

    This slide-show presents 3M photovoltaic-related products, particularly flexible components. Emphasis is on the 3M Ultra Barrier Solar Films. Topics covered include reliability and qualification testing and flexible photovoltaic encapsulation costs.

  7. Photovoltaic technology development at Sandia National Laboratories

    SciTech Connect (OSTI)

    NONE

    1981-12-31T23:59:59.000Z

    This report describes the following investigations being pursued under photovoltaic technology development at Sandia National Laboratories: photovoltaic systems technology; concentrator technology; concentrator arrays and tracking structures; concentrator solar cell development; system engineering; subsystem development; and test and applications.

  8. Sandia National Laboratories: Concentrating Solar Power

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

    News & Events, Photovoltaic, Photovoltaic Systems Evaluation Laboratory (PSEL), Renewable Energy, Solar, Solar Newsletter, SunShot, Systems Analysis Sandia and Electric Power...

  9. Sandia National Laboratories: Concentrating Solar Power

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

    Sandia and EMCORE: Solar Photovoltaics, Fiber Optics, MODE, and Energy Efficiency On March 29, 2013, in Concentrating Solar Power, Energy, Partnership, Photovoltaic, Renewable...

  10. Natural convection heat exchangers for solar water heating systems. Technical progress report, November 15, 1996--January 14, 1997

    SciTech Connect (OSTI)

    Davidson, J.H.

    1998-06-01T23:59:59.000Z

    The goals of this project are: (1) to develop guidelines for the design and use of thermosypohon side-arm heat exchangers in solar domestic water heating systems, and (2) to establish appropriate modeling and testing criteria for evaluating the performance of systems using this type of heat exchanger.

  11. Investigation of Solar Energy Transfer through Plasmonic Au Nanoparticle-doped Sol-derived TiO? Thin Films in Photocatalysis and Photovoltaics /

    E-Print Network [OSTI]

    Zelinski, Andrew

    2013-01-01T23:59:59.000Z

    in Photocatalysis and Photovoltaics A Thesis submitted inFilms in Photocatalysis and Photovoltaics by Andrew Zelinskiinvestigated for use in photovoltaics and as photocatalysts,

  12. Feasibility Study of Economics and Performance of Solar Photovoltaics in the Commonwealth of Puerto Rico

    SciTech Connect (OSTI)

    Salasovich, J.; Mosey, G.

    2011-03-01T23:59:59.000Z

    This report presents the results of an assessment of the technical and economic feasibility of deploying a photovoltaics (PV) system on brownfield sites in the Commonwealth of Puerto Rico. All of the assessed sites are landfills. The sites were assessed for possible PV installations. The cost, performance, and site impacts of different PV options were estimated. The economics of the potential systems were analyzed using an electric rate of $0.119/kWh and incentives offered by Puerto Rico and by the serving utility, PREPA. According to the site production calculations, the most cost-effective system in terms of return on investment is the thin-film fixed-tilt technology. The report recommends financing options that could assist in the implementation of such a system.

  13. Impact of Different Economic Performance Metrics on the Perceived Value of Solar Photovoltaics

    SciTech Connect (OSTI)

    Drury, E.; Denholm, P.; Margolis, R.

    2011-10-01T23:59:59.000Z

    Photovoltaic (PV) systems are installed by several types of market participants, ranging from residential customers to large-scale project developers and utilities. Each type of market participant frequently uses a different economic performance metric to characterize PV value because they are looking for different types of returns from a PV investment. This report finds that different economic performance metrics frequently show different price thresholds for when a PV investment becomes profitable or attractive. Several project parameters, such as financing terms, can have a significant impact on some metrics [e.g., internal rate of return (IRR), net present value (NPV), and benefit-to-cost (B/C) ratio] while having a minimal impact on other metrics (e.g., simple payback time). As such, the choice of economic performance metric by different customer types can significantly shape each customer's perception of PV investment value and ultimately their adoption decision.

  14. Transparent, near-infrared organic photovoltaic solar cells for window and energy-scavenging applications

    SciTech Connect (OSTI)

    Lunt, Richard R; Bulovic, Vladimir

    2011-01-01T23:59:59.000Z

    We fabricate near-infrared absorbing organic photovoltaics that are highly transparent to visible light. By optimizing near-infrared optical-interference, we demonstrate power efficiencies of 1.3±0.1% with simultaneous average visible transmission of >65% . Subsequent incorporation of near-infrared distributed-Bragg-reflector mirrors leads to an increase in the efficiency to 1.7±0.1% , approaching the 2.4±0.2% efficiency of the opaque cell, while maintaining high visible-transparency of >55% . Finally, we demonstrate that a series-integrated array of these transparent cells is capable of powering electronic devices under near-ambient lighting. This architecture suggests strategies for high-efficiency power-generating windows and highlights an application uniquely benefiting from excitonic electronics.

  15. Photovoltaic-Reliability R&D Toward a Solar-Powered World (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.; Granata, J.

    2009-08-01T23:59:59.000Z

    Presentation about the importance of continued progress toward low-cost, high-reliability, and high-performance PV systems. High reliability is an essential element in achieving low-cost solar electricity.

  16. Photovoltaic-Reliability R&D Toward a Solar-Powered World: Preprint

    SciTech Connect (OSTI)

    Kurtz, S.; Granata, J.; Quintana, M.

    2009-08-01T23:59:59.000Z

    Paper about the importance of continued progress toward low-cost, high-reliability, and high-performance PV systems. High reliability is an essential element in achieving low-cost solar electricity.

  17. RESIDENTIAL ON SITE SOLAR HEATING SYSTEMS: A PROJECT EVALUATION USING THE CAPITAL ASSET PRICING MODEL

    E-Print Network [OSTI]

    Schutz, Stephen Richard

    2011-01-01T23:59:59.000Z

    solar energy with rooftop panels, store excess energy in water storage tanks and can, in certain circumstances, provide 100% of the space heating

  18. PROGRAM SUPPORT FOR SOLAR HEATING AND COOLING RESEARCH AND DEVELOPMENT BRANCH

    E-Print Network [OSTI]

    Martin, M.

    2011-01-01T23:59:59.000Z

    of possible impact of passive cooling techniques for ene~·gyTechniques for EvaluaUon of Solar Heating and Cooling SysU•

  19. Hybrid Solar Lighting Provides Energy Savings and Reduces Waste Heat

    SciTech Connect (OSTI)

    Lapsa, Melissa Voss [ORNL; Maxey, L Curt [ORNL; Earl, Dennis Duncan [ORNL; Beshears, David L [ORNL; Ward, Christina D [ORNL; Parks, James Edgar [ORNL

    2006-01-01T23:59:59.000Z

    ABSTRACT Artificial lighting is the largest component of electricity use in commercial U.S. buildings. Hybrid solar lighting (HSL) provides an exciting new means of reducing energy consumption while also delivering significant ancillary benefits associated with natural lighting in buildings. As more than half of all federal facilities are in the Sunbelt region (defined as having an average direct solar radiation of greater than 4 kWh/m2/day) and as more than half of all square footage available in federal buildings is also in the Sunbelt, HSL is an excellent technology fit for federal facilities. The HSL technology uses a rooftop, 4-ft-wide dish and secondary mirror that track the sun throughout the day (Fig. 1). The collector system focuses the sunlight onto 127 optical fibers. The fibers serve as flexible light pipes and are connected to hybrid light fixtures that have special diffusion rods that spread out the light in all directions. One collector powers about eight hybrid light fixtures-which can illuminate about 1,000 square feet. The system tracks at 0.1 accuracy, required by the two-mirror geometry to keep the focused beam on the fiber bundle. When sunlight is plentiful, the optical fibers in the luminaires provide all or most of the light needed in an area. During times of little or no sunlight, a sensor controls the intensity of the artificial lamps to maintain a desired illumination level. Unlike conventional electric lamps, the natural light produces little to no waste heat and is cool to the touch. This is because the system's solar collector removes the infrared light-the part of the spectrum that generates a lot of the heat in conventional bulbs-from the sunlight.

  20. Combined Operation of Solar Energy Source Heat Pump, Low-vale Electricity and Floor Radiant System

    E-Print Network [OSTI]

    Liu, G.; Guo, Z.; Hu, S.

    2006-01-01T23:59:59.000Z

    solar energy, low-vale electricity as heat sources in a floor radiant system are analyzed. This paper presents a new heat pump system and discusses its operational modes in winter....