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We encourage you to perform a real-time search of NLEBeta
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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

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

E-Print Network [OSTI]

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

Callaway, Duncan S; Tabone, Michaelangelo D

2015-01-01T23:59:59.000Z

3

Energizing the Next Generation with Photovoltaics Following the lead of Russian colleagues, photovoltaic (PV)  

E-Print Network [OSTI]

Energizing the Next Generation with Photovoltaics ABSTRACT Following the lead of Russian colleagues, photovoltaic (PV) lab kits are being built and experiments and curricula are being developed for use of these kits. This Photovoltaic Sci- ence Experiments and Curriculum (PSEC) is being tested in local high

Oregon, University of

4

Photovoltaic Power Generation in the Stellar Environments  

E-Print Network [OSTI]

In this paper we have studied the problem of photovoltaic power generation near selected stars in the solar neighborhood. The nature of the optical radiation from a star will depend on its luminosity,HR classification and spectral characteristics. The solar celloperation in the habitable zones of the stars is similar to AM1.0 operation near earth.Thecurrent space solar cell technology can be adopted for power generation near G,K and Mtype stars. Silicon solar cells with good near IR response are particularly suitable in theenvironments of M type stars which are most abundant in the universe. . Photovoltaicpower generation near binary stars like Sirius and Alpha Centauri is also discussed.

T. E. Girish; S. Aranya

2010-12-03T23:59:59.000Z

5

Electrical faults modeling of the photovoltaic generator Wail Rezgui1  

E-Print Network [OSTI]

Electrical faults modeling of the photovoltaic generator Wail Rezgui1 , Leïla-Hayet Mouss1 , Kinza is captured by the generator and direct electrical energy resulting from the conversion of the solar radiation of a problem at the generator. Practically, the existence of electrical defects on this type of systems can

Boyer, Edmond

6

Fermion mass generation without a condensate  

E-Print Network [OSTI]

We study a lattice field theory model containing two flavors of massless staggered fermions with an onsite four-fermion interaction. The symmetry of the model forbids non-zero fermion bilinear order parameters that can generate a fermion mass. At weak couplings, we expect a massless fermion phase. At strong couplings, we can argue for the existence of massive fermions without the formation of any fermion bilinear condensate. Using Monte Carlo calculations in three space-time dimensions, we find evidence for a direct second order phase transition between the two phases.

Venkitesh Ayyar

2014-12-05T23:59:59.000Z

7

A Smart Algorithm for the Diagnosis of Short-Circuit Faults in a Photovoltaic Generator  

E-Print Network [OSTI]

A Smart Algorithm for the Diagnosis of Short-Circuit Faults in a Photovoltaic Generator Wail Rezgui observations distributed over classes is used for simulation purposes. Keywords--Photovoltaic generator, SVM, k-NN, short-circuit fault, smart classification, linear programming. NOMENCLATURE PV = Photovoltaic; SVM

Paris-Sud XI, Université de

8

Free Carrier Generation in Fullerene Acceptors and Its Effect on Polymer Photovoltaics  

E-Print Network [OSTI]

Free Carrier Generation in Fullerene Acceptors and Its Effect on Polymer Photovoltaics George F is this also true for many of the soluble fullerene derivatives commonly used in organic photovoltaics generated by numerous field- dependent techniques. INTRODUCTION In the organic photovoltaic (OPV) community

McGehee, Michael

9

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

E-Print Network [OSTI]

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

Paris-Sud XI, Université de

10

A Regression Algorithm for the Smart Prognosis of a Reversed Polarity Fault in a Photovoltaic Generator  

E-Print Network [OSTI]

A Regression Algorithm for the Smart Prognosis of a Reversed Polarity Fault in a Photovoltaic database containing sample data is used for simulation purposes. Keywords--Photovoltaic generator, SVR, k-NNR, reversed polarity fault, diagnosis, prognosis. NOMENCLATURE PV = Photovoltaic; SVM = Support Vector

Paris-Sud XI, Université de

11

Second-generation photovoltaic-concentrator-array design  

SciTech Connect (OSTI)

Martin Marietta Corporation's design of a second generation concentrating photovoltaic module is described. The passively cooled 13-kg module uses 2 columns of 7 point focus Fresnel lenses that are each 20.7 cm by 20.7 cm, and 14 planar junction silicon cells. The geometric concentration is 84X. Martin Marietta fabricated five prototype modules and shipped three to Sandia for testing. The modules' peak efficiency was 14.1% which is the highest to date for a module using silicon cells.

Broadbent, S.; Baumann, J.E.; Heller, B.W.; Hughes, D.J.; Marshall, L.S.; Semma, R.P.; Stegeman, R.E.

1982-12-01T23:59:59.000Z

12

Options for Control of Reactive Power by Distributed Photovoltaic Generators  

E-Print Network [OSTI]

High penetration levels of distributed photovoltaic(PV) generation on an electrical distribution circuit present several challenges and opportunities for distribution utilities. Rapidly varying irradiance conditions may cause voltage sags and swells that cannot be compensated by slowly responding utility equipment resulting in a degradation of power quality. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We discuss and compare via simulation various design options for control systems to manage the reactive power generated by these inverters. An important design de...

Sulc, Petr; Backhaus, Scott; Chertkov, Michael

2010-01-01T23:59:59.000Z

13

Local Control of Reactive Power by Distributed Photovoltaic Generators  

E-Print Network [OSTI]

High penetration levels of distributed photovoltaic (PV) generation on an electrical distribution circuit may severely degrade power quality due to voltage sags and swells caused by rapidly varying PV generation during cloud transients coupled with the slow response of existing utility compensation and regulation equipment. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We suggest a local control scheme that dispatches reactive power from each PV inverter based on local instantaneous measurements of the real and reactive components of the consumed power and the re...

Turitsyn, Konstantin S; Backhaus, Scott; Chertkov, Misha

2010-01-01T23:59:59.000Z

14

Local control of reactive power by distributed photovoltaic generators  

SciTech Connect (OSTI)

High penetration levels of distributed photovoltaic (PV) generation on an electrical distribution circuit may severely degrade power quality due to voltage sags and swells caused by rapidly varying PV generation during cloud transients coupled with the slow response of existing utility compensation and regulation equipment. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We suggest a local control scheme that dispatches reactive power from each PV inverter based on local instantaneous measurements of the real and reactive components of the consumed power and the real power generated by the PVs. Using one adjustable parameter per circuit, we balance the requirements on power quality and desire to minimize thermal losses. Numerical analysis of two exemplary systems, with comparable total PV generation albeit a different spatial distribution, show how to adjust the optimization parameter depending on the goal. Overall, this local scheme shows excellent performance; it's capable of guaranteeing acceptable power quality and achieving significant saving in thermal losses in various situations even when the renewable generation in excess of the circuit own load, i.e. feeding power back to the higher-level system.

Chertkov, Michael [Los Alamos National Laboratory; Turitsyn, Konstantin [Los Alamos National Laboratory; Sulc, Petr [Los Alamos National Laboratory; Backhaus, Scott [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

15

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.

16

Options for Control of Reactive Power by Distributed Photovoltaic Generators  

E-Print Network [OSTI]

High penetration levels of distributed photovoltaic(PV) generation on an electrical distribution circuit present several challenges and opportunities for distribution utilities. Rapidly varying irradiance conditions may cause voltage sags and swells that cannot be compensated by slowly responding utility equipment resulting in a degradation of power quality. Although not permitted under current standards for interconnection of distributed generation, fast-reacting, VAR-capable PV inverters may provide the necessary reactive power injection or consumption to maintain voltage regulation under difficult transient conditions. As side benefit, the control of reactive power injection at each PV inverter provides an opportunity and a new tool for distribution utilities to optimize the performance of distribution circuits, e.g. by minimizing thermal losses. We discuss and compare via simulation various design options for control systems to manage the reactive power generated by these inverters. An important design decision that weighs on the speed and quality of communication required is whether the control should be centralized or distributed (i.e. local). In general, we find that local control schemes are capable for maintaining voltage within acceptable bounds. We consider the benefits of choosing different local variables on which to control and how the control system can be continuously tuned between robust voltage control, suitable for daytime operation when circuit conditions can change rapidly, and loss minimization better suited for nighttime operation.

Petr Sulc; Konstantin Turitsyn; Scott Backhaus; Michael Chertkov

2010-08-04T23:59:59.000Z

17

Storing unsteady energy, like photovoltaically generated electric energy, as potential energy  

E-Print Network [OSTI]

A proposal to store unsteady energy in potential energy via lifting masses with a rough quantitative overview. Some applications and methods to harvest the potential energy are also given. A focus is put on photovoltaically generated energy.

Nadja Kutz

2012-02-13T23:59:59.000Z

18

Interconnection of on-site photovoltaic generation to the electric utility. [Conference paper  

SciTech Connect (OSTI)

Electrical interconnection with the local electric utility of small, privately owned, on-site photovoltaic generating systems will be necessary. Legal guidelines exist through PURPA, administered by FERC, to establish interconnection, but economic viability will be the deciding factor in constructing photovoltaic generating systems. Although nationally recognized technical standards do not yet exist for interconnecting photovoltaic generation with an electric utility, most utilities have considered the need for developing cogeneration standards, and a few have developed such standards independently. Additional costs incurred by utilities in providing service interconnections to customers with cogeneration will be passed along to those customers, either as a direct assessment or as part of the applicable rate schedule. An economic-analysis methodology has been developed to allow comparing various possible photovoltaic-generating-system configurations under different utility rate structures and varying economic climates on a consistent basis.

Eichler, C.H.; Kilar, L.A.; Stiller, P.H.

1980-01-01T23:59:59.000Z

19

The Photovoltaic Crisis and the Demand-side Generation in Spain  

E-Print Network [OSTI]

The RES-E promotion policy in Spain gave priority to the photovoltaic (henceforth, PV) ground-mounted installations. For years, the coupling of customer-side generation coupled with excess energy exports was never specifically considered. However...

Mir-Artigues, Pere

2013-03-01T23:59:59.000Z

20

The economic impact of state ordered avoided cost rates for photovoltaic generated electricity  

E-Print Network [OSTI]

The Public Utility Regulatory Policies Act (PURPA) of 1978 requires that electric utilities purchase electricity generated by small power producers (QFs) such as photovoltaic systems at rates that will encourage the ...

Bottaro, Drew

1981-01-01T23:59:59.000Z

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


21

Short term generation scheduling in photovoltaic-utility grid with battery storage  

SciTech Connect (OSTI)

This paper presents an efficient approach to short term resource scheduling for an integrated thermal and photovoltaic-battery generation. The proposed model incorporated battery storage for peak load shaving. Several constraints including battery capacity, minimum up/down time and ramp rates for thermal units, as well as natural photovoltaic (PV) capacity are considered in the proposed model. A case study composed of 26 thermal units and a PV-battery plant is presented to test the efficiency of the method.

Marwali, M.K.C.; Ma, H.; Shahidehpour, S.M. [Illinois Inst. of Tech., Chicago, IL (United States). Dept. of Electrical and Computer Engineering] [Illinois Inst. of Tech., Chicago, IL (United States). Dept. of Electrical and Computer Engineering; Abdul-Rahman, K.H. [Siemens Energy and Automation, Brooklyn Park, MN (United States)] [Siemens Energy and Automation, Brooklyn Park, MN (United States)

1998-08-01T23:59:59.000Z

22

Photovoltaic Power Generation in Flagstaff | GE Global Research  

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 the1 - September 2006 TheStevenAdministrationPhotometric(dmpePhotovoltaicPhotovoltaic

23

High gliding fluid power generation system with fluid component separation and multiple condensers  

DOE Patents [OSTI]

An example power generation system includes a vapor generator, a turbine, a separator and a pump. In the separator, the multiple components of the working fluid are separated from each other and sent to separate condensers. Each of the separate condensers is configured for condensing a single component of the working fluid. Once each of the components condense back into a liquid form they are recombined and exhausted to a pump that in turn drives the working fluid back to the vapor generator.

Mahmoud, Ahmad M; Lee, Jaeseon; Radcliff, Thomas D

2014-10-14T23:59:59.000Z

24

Interface and Electrode Engineering for Next-Generation Organic Photovoltaic Cells: Final Technical Report, March 2005 - August 2008  

SciTech Connect (OSTI)

The objective of this project was to enable next-generation, efficient, easily manufacturable, and durable organic photovoltaics through interface and electrode engineering.

Mason, T. O.; Chang, R. P. H.; Freeman, A. J.; Marks, T. J.; Poeppelmeier, K. R.

2008-11-01T23:59:59.000Z

25

Cost-Effectivenessof PhotovoltaicGenerationIn A Transmission-Constrained Load Area of An InterconnectedSystem  

E-Print Network [OSTI]

Cost-Effectivenessof PhotovoltaicGenerationIn A Transmission-Constrained Load Area examines and evaluates the applicability and cost-effectiveness of Photovoltaic(PV) generation the construction of many large power stations with high efficiency, which were located far fi-om customer sites

Gross, George

26

Thin Film Materials and Processing Techniques for a Next Generation Photovoltaic Device: Cooperative Research and Development Final Report, CRADA Number CRD-12-470  

SciTech Connect (OSTI)

This research extends thin film materials and processes relevant to the development and production of a next generation photovoltaic device.

van Hest, M.

2013-08-01T23:59:59.000Z

27

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

E-Print Network [OSTI]

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,

Mariani, Giacomo

2013-01-01T23:59:59.000Z

28

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

E-Print Network [OSTI]

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

Mariani, Giacomo

2013-01-01T23:59:59.000Z

29

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

E-Print Network [OSTI]

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

George, Steven C.

30

A Framework of Incorporating Spatio-temporal Forecast in Look-ahead Grid Dispatch with Photovoltaic Generation  

E-Print Network [OSTI]

Increasing penetration of stochastic photovoltaic (PV) generation into the electric power system poses significant challenges to system operators. In the thesis, we evaluate the spatial and temporal correlations of stochastic PV generation...

Yang, Chen

2013-05-02T23:59:59.000Z

31

Apparatus for mounting photovoltaic power generating systems on buildings  

DOE Patents [OSTI]

Rectangular photovoltaic (PV) modules are mounted on a building roof by mounting stands that are distributed in rows and columns. Each stand comprises a base plate and first and second different height brackets attached to opposite ends of the base plate. Each first and second bracket comprises two module-support members. One end of each module is pivotally attached to and supported by a first module-support member of a first bracket and a second module-support member of another first bracket. At its other end each module rests on but is connected by flexible tethers to module-support members of two different second brackets. The tethers are sized to allow the modules to pivot up away from the module-support members on which they rest to a substantially horizontal position in response to wind uplift forces.

Russell, Miles C. (Lincoln, MA)

2009-08-18T23:59:59.000Z

32

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

E-Print Network [OSTI]

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

Sathrum, Aaron John

2011-01-01T23:59:59.000Z

33

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

E-Print Network [OSTI]

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

Mariani, Giacomo

2013-01-01T23:59:59.000Z

34

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.

35

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

E-Print Network [OSTI]

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,

Mariani, Giacomo

2013-01-01T23:59:59.000Z

36

Nanocrystal Photovoltaics: The Case of Cu2S-CdS  

E-Print Network [OSTI]

M. A. Third generation photovoltaics: Ultra-high conversionmodern photovoltaic age. in photovoltaics: research andnanopillar-array photovoltaics on low-cost and flexible

Rivest, Jessica Louis Baker

2011-01-01T23:59:59.000Z

37

Origin of carrier generation in photovoltaic perovskite variant Cs2SnI6  

E-Print Network [OSTI]

Cs2SnI6 is an air-stable & non-toxic variant of perovskite-type photovoltaic materials. In this letter, stability of intrinsic defects in Cs2SnI6 was examined by density functional theory calculations. We found that iodine vacancy and tin interstitial are the dominant defects, mainly responsible for the intrinsic n-type conductivity in Cs2SnI6. However, the transition levels of the dominant defects are deep, which makes it difficult to achieve high-density n-type doping. Tin vacancy is expected for p-type doping, but it has a very high formation energy > 3.6 eV because of the strong Sn-I covalent bonds and can hardly be generated. Instead, cesium vacancy is formed at an extremely Cs-poor condition and explains already-reported p-type conductivity by SnI2 doping.

Xiao, Zewen; Kamiya, Toshio

2015-01-01T23:59:59.000Z

38

Photovoltaic Energy Conversion  

E-Print Network [OSTI]

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

Glashausser, Charles

39

Simulation of one-minute power output from utility-scale photovoltaic generation systems.  

SciTech Connect (OSTI)

We present an approach to simulate time-synchronized, one-minute power output from large photovoltaic (PV) generation plants in locations where only hourly irradiance estimates are available from satellite sources. The approach uses one-minute irradiance measurements from ground sensors in a climatically and geographically similar area. Irradiance is translated to power using the Sandia Array Performance Model. Power output is generated for 2007 in southern Nevada are being used for a Solar PV Grid Integration Study to estimate the integration costs associated with various utility-scale PV generation levels. Plant designs considered include both fixed-tilt thin-film, and single-axis-tracked polycrystalline Si systems ranging in size from 5 to 300 MW{sub AC}. Simulated power output profiles at one-minute intervals were generated for five scenarios defined by total PV capacity (149.5 MW, 222 WM, 292 MW, 492 MW, and 892 MW) each comprising as many as 10 geographically separated PV plants.

Stein, Joshua S.; Ellis, Abraham; Hansen, Clifford W.

2011-08-01T23:59:59.000Z

40

The Development of Semiconducting Materials for Organic Photovoltaics  

E-Print Network [OSTI]

F. C. ; Norrman, K. Prog. Photovoltaics 2007, 15, 697712.Processed Organic Photovoltaics that Generate Chargepolymer-based organic photovoltaics (OPVs) have attracted

Douglas, Jessica D.

2013-01-01T23:59:59.000Z

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


41

Characterization of 3D Photovoltaics  

E-Print Network [OSTI]

Characterization of 3D Photovoltaics SEMICONDUCTORS Our goal is to provide industry with test structures and models of next-generation photovoltaics, with an initial focus on cadmium telluride (Cd (nanostructured) photovoltaic devices. Objective Impact and Customers The U.S. Photovoltaic Industry Roadmap

42

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

E-Print Network [OSTI]

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

Sathrum, Aaron John

2011-01-01T23:59:59.000Z

43

Low-Cost High-Concentration Photovoltaic Systems for Utility Power Generation  

SciTech Connect (OSTI)

Under DOE's Technology Pathway Partnership (TPP) program, Amonix, Inc. developed a new generation of high-concentration photovoltaic systems using multijunction technology and established the manufacturing capacity needed to supply multi-megawatt power plants buing using the new Amonix 7700-series solar energy systems. For this effort, Amonix Collaborated with a variety of suppliers and partners to complete project tasks. Subcontractors included: Evonik/Cyro; Hitek; the National Renewable Energy Laboratory (NREL); Raytech; Spectrolab; UL; University of Nevada, Las Vegas; and TUV Rheinland PTL. The Amonix TPP tasks included: Task 1: Multijunction Cell Optimization for Field Operation, Task 2: Fresnel Lens R&D, Task 3: Cell Package Design & Production, Task 4: Standards Compliance and Reliability Testing, Task 5: Receiver Plate Production, Task 6: MegaModule Performance, Task 7: MegaModule Cost Reduction, Task 8: Factory Setup and MegaModule Production, Task 9: Tracker and Tracking Controller, Task 10: Installation and Balance of System (BOS), Task 11: Field Testing, and Task 12: Solar Advisor Modeling and Market Analysis. Amonix's TPP addressed nearly the complete PV value chain from epitaxial layer design and wafer processing through system design, manufacturing, deployment and O&M. Amonix has made progress toward achieving these reduced costs through the development of its 28%+ efficient MegaModule, reduced manufacturing and installation cost through design for manufacturing and assembly, automated manufacturing processes, and reduced O&M costs. Program highlights include: (1) Optimized multijunction cell and cell package design to improve performance by > 10%; (2) Updated lens design provided 7% increased performance and higher concentration; (3) 28.7% DC STC MegaModule efficiency achieved in Phase II exceeded Phase III performance goal; (4) New 16' focal length MegaModule achieved target materials and manufacturing cost reduction; (5) Designed and placed into production 25 MW/yr manufacturing capacity for complete MegaModules, including cell packages, receiver plates, and structures with lenses; (6) Designed and deployed Amonix 7700 series systems rated at 63 kW PTC ac and higher. Based on an LCOE assessment using NREL's Solar Advisor Model, Amonix met DOE's LCOE targets: Amonix 2011 LCOE 12.8 cents/kWh (2010 DOE goal 10-15); 2015 LCOE 6.4 cents/kWh (2015 goal 5-7) Amonix and TPP participants would like to thank the U.S. Department of Energy Solar Energy Technology Program for funding received under this program through Agreement No. DE-FC36-07GO17042.

McConnell, R.; Garboushian, V.; Gordon, R.; Dutra, D.; Kinsey, G.; Geer, S.; Gomez, H.; Cameron, C.

2012-03-31T23:59:59.000Z

44

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

E-Print Network [OSTI]

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

Brown, Gregory Ferguson

2011-01-01T23:59:59.000Z

45

Low Cost Production of InGaN for Next-Generation Photovoltaic Devices  

SciTech Connect (OSTI)

The goal of this project is to develop a low-cost and low-energy technology for production of photovoltaic devices based on InGaN materials. This project builds on the ongoing development by Structured Materials Industries (SMI), of novel thin film deposition technology for Group III-Nitride materials, which is capable of depositing Group-III nitride materials at significantly lower costs and significantly lower energy usage compared to conventional deposition techniques. During this project, SMI demonstrated deposition of GaN and InGaN films using metalorganic sources, and demonstrated compatibility of the process with standard substrate materials and hardware components.

Nick M. Sbrockey, Shangzhu Sun, Gary S. Tompa,

2012-07-09T23:59:59.000Z

46

Next Generation Print-based Manufacturing for Photovoltaics and Solid State Lighting  

SciTech Connect (OSTI)

For the grand challenge of reducing our energy and carbon footprint, the development of renewable energy and energy efficient technologies offer a potential solution. Energy technologies can reduce our dependence on foreign oil as well as the energy consumed by the petroleum industry, the leading consumer of energy by a U.S. industry sector. Nonetheless, the manufacturing processes utilized to manufacture equipment for alternative energy technologies often involve energy-intensive processes. This undermines some of the advantages to moving to 'green' technologies in the first place. Our answer to the Industrial Technology Program's (ITP) Grand Challenge FOA was to develop a transformational low cost manufacturing process for plastic-based photovoltaics that will lower by over 50% both energy consumption and greenhouse emissions and offer a return-of-investment of over 20%. We demonstrated a Luminescent Solar Concentrator fabricated on a plastic acrylic substrate (i.e. no glass) that increases the power output of the PV cell by 2.2x with a 2% power efficiency as well as an LSC with a 7% power efficiency that increased the power output from the PV cells by 35%. S large area 20-inch x 60-inch building-integrated photovoltaic window was fabricated using contract manufacturing with a 4% power efficiency which improved the power output of the PV cell by over 50%. In addition, accelerated lifetimes of the luminescent material demonstrate lifetimes of 20-years.

Sue A. Carter

2012-09-07T23:59:59.000Z

47

Presented at the 21st European Photovoltaic Solar Energy Conference, Dresden,Germany, 4-8 September 2006 ENVIRONMENTAL IMPACTS OF PV ELECTRICITY GENERATION -  

E-Print Network [OSTI]

2006 ENVIRONMENTAL IMPACTS OF PV ELECTRICITY GENERATION - A CRITICAL COMPARISON OF ENERGY SUPPLY, NY 11973, USA ABSTRACT: An overview is given of the environmental impacts of different PV in the assessment of environmental impacts from photovoltaic systems. In this paper we will give an overview

48

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

49

PhotoVoltaic distributed generation for Lanai power grid real-time simulation and control integration scenario.  

SciTech Connect (OSTI)

This paper discusses the modeling, analysis, and testing in a real-time simulation environment of the Lanai power grid system for the integration and control of PhotoVoltaic (PV) distributed generation. The Lanai Island in Hawaii is part of the Hawaii Clean Energy Initiative (HCEI) to transition to 30% renewable green energy penetration by 2030. In Lanai the primary loads come from two Castle and Cook Resorts, in addition to residential needs. The total peak load profile is 12470 V, 5.5 MW. Currently there are several diesel generators that meet these loading requirements. As part of the HCEI, Lanai has initially installed 1.2 MW of PV generation. The goal of this study has been to evaluate the impact of the PV with respect to the conventional carbon-based diesel generation in real time simulation. For intermittent PV distributed generation, the overall stability and transient responses are investigated. A simple Lanai 'like' model has been developed in the Matlab/Simulink environment (see Fig. 1) and to accommodate real-time simulation of the hybrid power grid system the Opal-RT Technologies RT-Lab environment is used. The diesel generators have been modelled using the SimPowerSystems toolbox swing equations and a custom Simulink module has been developed for the High level PV generation. All of the loads have been characterized primarily as distribution lines with series resistive load banks with one VAR load bank. Three-phase faults are implemented for each bus. Both conventional and advanced control architectures will be used to evaluate the integration of the PV onto the current power grid system. The baseline numerical results include the stable performance of the power grid during varying cloud cover (PV generation ramping up/down) scenarios. The importance of assessing the real-time scenario is included.

Robinett, Rush D., III; Kukolich, Keith (Opal RT Technologies, Montreal, Quebec, Canada); Wilson, David Gerald; Schenkman, Benjamin L.

2010-06-01T23:59:59.000Z

50

Organic photovoltaics and concentrators  

E-Print Network [OSTI]

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 ...

Mapel, Jonathan King

2008-01-01T23:59:59.000Z

51

Interim Report: Air-Cooled Condensers for Next Generation Geothermal Power Plants Improved Binary Cycle Performance  

SciTech Connect (OSTI)

As geothermal resources that are more expensive to develop are utilized for power generation, there will be increased incentive to use more efficient power plants. This is expected to be the case with Enhanced Geothermal System (EGS) resources. These resources will likely require wells drilled to depths greater than encountered with hydrothermal resources, and will have the added costs for stimulation to create the subsurface reservoir. It is postulated that plants generating power from these resources will likely utilize the binary cycle technology where heat is rejected sensibly to the ambient. The consumptive use of a portion of the produced geothermal fluid for evaporative heat rejection in the conventional flash-steam conversion cycle is likely to preclude its use with EGS resources. This will be especially true in those areas where there is a high demand for finite supplies of water. Though they have no consumptive use of water, using air-cooling systems for heat rejection has disadvantages. These systems have higher capital costs, reduced power output (heat is rejected at the higher dry-bulb temperature), increased parasitics (fan power), and greater variability in power generation on both a diurnal and annual basis (larger variation in the dry-bulb temperature). This is an interim report for the task Air-Cooled Condensers in Next- Generation Conversion Systems. The work performed was specifically aimed at a plant that uses commercially available binary cycle technologies with an EGS resource. Concepts were evaluated that have the potential to increase performance, lower cost, or mitigate the adverse effects of off-design operation. The impact on both cost and performance were determined for the concepts considered, and the scenarios identified where a particular concept is best suited. Most, but not all, of the concepts evaluated are associated with the rejection of heat. This report specifically addresses three of the concepts evaluated: the use of recuperation, the use of turbine reheat, and the non-consumptive use of EGS make-up water to supplement heat rejection

Daniel S. Wendt; Greg L. Mines

2010-09-01T23:59:59.000Z

52

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

SciTech Connect (OSTI)

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

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

2010-07-15T23:59:59.000Z

53

Modeling and Analysis of Photovoltaic Generation and Storage Systems for Residential Use.  

E-Print Network [OSTI]

?? The majority of commercially available electrical energy is generated through the burning of fossil fuels. This process introduces carbon into the atmosphere and thus (more)

POSEDLY, PAUL EDWARD, III

2008-01-01T23:59:59.000Z

54

Utilizing Electric Vehicles to Assist Integration of Large Penetrations of Distributed Photovoltaic Generation Capacity  

SciTech Connect (OSTI)

Executive Summary Introduction and Motivation This analysis provides the first insights into the leveraging potential of distributed photovoltaic (PV) technologies on rooftop and electric vehicle (EV) charging. Either of the two technologies by themselves - at some high penetrations may cause some voltage control challenges or overloading problems, respectively. But when combined, there at least intuitively could be synergistic effects, whereby one technology mitigates the negative impacts of the other. High penetration of EV charging may overload existing distribution system components, most prominently the secondary transformer. If PV technology is installed at residential premises or anywhere downstream of the secondary transformer, it will provide another electricity source thus, relieving the loading on the transformers. Another synergetic or mitigating effect could be envisioned when high PV penetration reverts the power flow upward in the distribution system (from the homes upstream into the distribution system). Protection schemes may then no longer work and voltage violation (exceeding the voltage upper limited of the ANSI voltage range) may occur. In this particular situation, EV charging could absorb the electricity from the PV, such that the reversal of power flow can be reduced or alleviated. Given these potential mutual synergistic behaviors of PV and EV technologies, this project attempted to quantify the benefits of combining the two technologies. Furthermore, of interest was how advanced EV control strategies may influence the outcome of the synergy between EV charging and distributed PV installations. Particularly, Californian utility companies with high penetration of the distributed PV technology, who have experienced voltage control problems, are interested how intelligent EV charging could support or affect the voltage control

Tuffner, Francis K.; Chassin, Forrest S.; Kintner-Meyer, Michael CW; Gowri, Krishnan

2012-11-30T23:59:59.000Z

55

Photovoltaic cell efficiency at elevated temperatures  

E-Print Network [OSTI]

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 ...

Ray, Katherine Leung

2010-01-01T23:59:59.000Z

56

Photovoltaic solar cell  

DOE Patents [OSTI]

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.

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

2013-11-26T23:59:59.000Z

57

Photovoltaic solar cell  

DOE Patents [OSTI]

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.

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

2014-05-20T23:59:59.000Z

58

Analysis of the value of battery storage with wind and photovoltaic generation to the Sacramento Municipal Utility District  

SciTech Connect (OSTI)

This report describes the results of an analysis to determine the economic and operational value of battery storage to wind and photovoltaic (PV) generation technologies to the Sacramento Municipal Utility District (SMUD) system. The analysis approach consisted of performing a benefit-cost economic assessment using established SMUD financial parameters, system expansion plans, and current system operating procedures. This report presents the results of the analysis. Section 2 describes expected wind and PV plant performance. Section 3 describes expected benefits to SMUD associated with employing battery storage. Section 4 presents preliminary benefit-cost results for battery storage added at the Solano wind plant and the Hedge PV plant. Section 5 presents conclusions and recommendations resulting from this analysis. The results of this analysis should be reviewed subject to the following caveat. The assumptions and data used in developing these results were based on reports available from and interaction with appropriate SMUD operating, planning, and design personnel in 1994 and early 1995 and are compatible with financial assumptions and system expansion plans as of that time. Assumptions and SMUD expansion plans have changed since then. In particular, SMUD did not install the additional 45 MW of wind that was planned for 1996. Current SMUD expansion plans and assumptions should be obtained from appropriate SMUD personnel.

Zaininger, H.W. [Zaininger Engineering Co., Inc., Roseville, CA (United States)

1998-08-01T23:59:59.000Z

59

Energy and Capacity Valuation of Photovoltaic Power Generation in New York  

E-Print Network [OSTI]

Perez & Thomas E. Hoff, Clean Power Research for the Solar Alliance and the N r Energy Industry between peak demand and solar resource availability both downstate and upstate, the generation energy: What is the Value of PV? System Owners Utility Constituents Equipment cost Incentives benefit cost

Perez, Richard R.

60

Agent-Based Simulation of Distribution Systems with High Penetration of Photovoltaic Generation  

E-Print Network [OSTI]

of strategic trading in restructured wholesale power markets with congestion managed by locational marginal when coupled with increased price-sensitivity of demand as realized through demand response, demand dispatch, and/or price-sensitive demand bidding. Index Terms--Distributed power generation, multiagent sys

Tesfatsion, Leigh

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


61

The effect of the number of condensed phases modeled on aerosol behavior during an induced steam generator tube rupture sequence  

SciTech Connect (OSTI)

VICTORIA is a mechanistic computer code designed to analyze fission product behavior within a nuclear reactor coolant system (RCS) during a severe accident. It provides detailed predictions of the release of radioactive and nonradioactive materials from the reactor core and transport and deposition of these materials within the RCS. A recently completed independent peer review of VICTORIA, while confirming the overall adequacy of the code, recommended a number of modeling improvements. One of these recommendations, to model three rather than a single condensed phase, is the focus of the work reported here. The recommendation has been implemented as an option so that either a single or three condensed phases can be treated. Both options have been employed in the study of fission product behavior during an induced steam generator tube rupture sequence. Differences in deposition patterns and mechanisms predicted using these two options are discussed.

Bixler, N.E. [Sandia National Labs., Albuquerque, NM (United States); Schaperow, J.H. [Nuclear Regulatory Commission, Washington, DC (United States)

1998-06-01T23:59:59.000Z

62

Vibrational Sum Frequency Generation Spectroscopy of Secondary Organic Material Produced by Condensational Growth from Pinene  

E-Print Network [OSTI]

.9). The corresponding volume concentrations were as high as (3.0 ± 0.1) ? 1014 nm3 cm-3 . The size distributions to (1.26 ± 0.02) ? 107 cm-3 for the matrix of reaction conditions. The mode diameters of the aerosols indicated access to different particle growth stages, namely condensation, coagulation, or combination

63

Optimizing Geographic Allotment of Photovoltaic Capacity in a Distributed Generation Setting: Preprint  

SciTech Connect (OSTI)

A multi-objective optimization was performed to allocate 2MW of PV among four candidate sites on the island of Lanai such that energy was maximized and variability in the form of ramp rates was minimized. This resulted in an optimal solution set which provides a range of geographic allotment alternatives for the fixed PV capacity. Within the optimal set, a tradeoff between energy produced and variability experienced was found, whereby a decrease in variability always necessitates a simultaneous decrease in energy. A design point within the optimal set was selected for study which decreased extreme ramp rates by over 50% while only decreasing annual energy generation by 3% over the maximum generation allocation. To quantify the allotment mix selected, a metric was developed, called the ramp ratio, which compares ramping magnitude when all capacity is allotted to a single location to the aggregate ramping magnitude in a distributed scenario. The ramp ratio quantifies simultaneously how much smoothing a distributed scenario would experience over single site allotment and how much a single site is being under-utilized for its ability to reduce aggregate variability. This paper creates a framework for use by cities and municipal utilities to reduce variability impacts while planning for high penetration of PV on the distribution grid.

Urquhart, B.; Sengupta, M.; Keller, J.

2012-09-01T23:59:59.000Z

64

Impacts of Variability and Uncertainty in Solar Photovoltaic Generation at Multiple Timescales  

SciTech Connect (OSTI)

The characteristics of variability and uncertainty of PV solar power have been studied extensively. These characteristics can create challenges for system operators who must ensure a balance between generation and demand while obeying power system constraints at the lowest possible cost. A number of studies have looked at the impact of wind power plants, and some recent studies have also included solar PV. The simulations that are used in these studies, however, are typically fixed to one time resolution. This makes it difficult to analyze the variability across several timescales. In this study, we use a simulation tool that has the ability to evaluate both the economic and reliability impacts of PV variability and uncertainty at multiple timescales. This information should help system operators better prepare for increases of PV on their systems and develop improved mitigation strategies to better integrate PV with enhanced reliability. Another goal of this study is to understand how different mitigation strategies and methods can improve the integration of solar power more reliably and efficiently.

Ela, E.; Diakov, V.; Ibanez, E.; Heaney, M.

2013-05-01T23:59:59.000Z

65

The Solar Photovoltaics Technology Conflict between  

E-Print Network [OSTI]

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

Deutch, John

66

EELE408 Photovoltaics Lecture 23: Summary  

E-Print Network [OSTI]

Photovoltaic Myth #1 · Solar modules consume more energy for their production than they ever generate. ­ Most industry ­ Future recycling of modules will further reduce environmental impact 15 Photovoltaic Myth #81 EELE408 Photovoltaics Lecture 23: Summary Dr. Todd J. Kaiser tjkaiser@ece.montana.edu Department

Kaiser, Todd J.

67

Module Handbook Specialisation Photovoltaics  

E-Print Network [OSTI]

Module Handbook Specialisation Photovoltaics 2nd Semester for the Master Programme REMA/EUREC Course 2008/2009 University of Northumbria Specialisation Provider: Photovoltaics #12;Specialisation Photovoltaics, University of Northumbria Module 1/Photovoltaics: PHOTOVOLTAIC CELL

Habel, Annegret

68

Photovoltaics Green is a Prerequisite for Sustainable Growth  

E-Print Network [OSTI]

1 Photovoltaics Green is a Prerequisite for Sustainable Growth Vasilis Fthenakis1 and Brent Nelson2 impact on the environment, are the key drivers of photovoltaic energy development Photovoltaic life Criteria Photovoltaics are required to meet the need for abundant electricity generation at competitive

Ohta, Shigemi

69

Photovoltaic cell  

DOE Patents [OSTI]

In a photovoltaic cell structure containing a visibly transparent, electrically conductive first layer of metal oxide, and a light-absorbing semiconductive photovoltaic second layer, the improvement comprising a thin layer of transition metal nitride, carbide or boride interposed between said first and second layers.

Gordon, Roy G. (Cambridge, MA); Kurtz, Sarah (Somerville, MA)

1984-11-27T23:59:59.000Z

70

Generation of directional, coherent matter beams through dynamical instabilities in Bose-Einstein condensates  

SciTech Connect (OSTI)

We present a theoretical analysis of a coupled, two-state Bose-Einstein condensate with nonequal scattering lengths and show that dynamical instabilities can be excited. We demonstrate that these instabilities are exponentially amplified, resulting in highly directional, oppositely propagating, coherent matter beams at specific momenta. To accomplish this we prove that the mean field of our system is periodic and extend the standard Bogoliubov approach to consider a time-dependent, but cyclic, background. This allows us to use Floquet's theorem to gain analytic insight into such systems, rather than employing the usual Bogoliubov-de Gennes approach, which is usually limited to numerical solutions. We apply our theory to the metastable helium atom laser experiment by Dall et al. [Phys. Rev. A 79, 011601(R) (2009)] and show that it explains the anomalous beam profiles they observed. Finally, we demonstrate that the paired particle beams will be Einstein-Podolsky-Rosen entangled on formation.

Dennis, Graham R.; Johnsson, Mattias T. [Department of Quantum Science, Australian National University, Canberra 0200, Australia and Australian Research Council Centre of Excellence for Quantum-Atom Optics, Australian National University, Canberra 0200 (Australia)

2010-09-15T23:59:59.000Z

71

EELE408 Photovoltaics Lecture 20: Photovoltaic Systems  

E-Print Network [OSTI]

· 6. Determine battery size for recommended reserve time Photovoltaic System Design Block Diagram Ph1 EELE408 Photovoltaics Lecture 20: Photovoltaic Systems Dr. Todd J. Kaiser tjkaiser into the grid 2 Application Areas 3 Photovoltaic System Basics · Photovoltaic Systems ­ Cell Panel Array

Kaiser, Todd J.

72

Photovoltaic Subcontract Program  

SciTech Connect (OSTI)

This report summarizes the fiscal year (FY) 1992 progress of the subcontracted photovoltaic (PV) research and development (R D) performed under the Photovoltaic Advanced Research and Development Project at the National Renewable Energy Laboratory (NREL)-formerly the Solar Energy Research Institute (SERI). The mission of the national PV program is to develop PV technology for large-scale generation of economically competitive electric power in the United States. The technical sections of the report cover the main areas of the subcontract program: the Crystalline Materials and Advanced Concepts project, the Polycrystalline Thin Films project, Amorphous Silicon Research project, the Photovoltaic Manufacturing Technology (PVMaT) project, PV Module and System Performance and Engineering project, and the PV Analysis and Applications Development project. Technical summaries of each of the subcontracted programs provide a discussion of approaches, major accomplishments in FY 1992, and future research directions.

Not Available

1993-03-01T23:59:59.000Z

73

Condensation on Superhydrophobic Copper Oxide Nanostructures  

E-Print Network [OSTI]

Condensation is an important process in both emerging and traditional power generation and water desalination technologies. Superhydrophobic nanostructures promise enhanced condensation heat transfer by reducing the ...

Enright, Ryan

74

Condensation on superhydrophobic copper oxide nanostructures  

E-Print Network [OSTI]

Condensation is an important process in many power generation and water desalination technologies. Superhydrophobic nanostructured surfaces have unique condensation properties that may enhance heat transfer through a ...

Dou, Nicholas (Nicholas Gang)

2012-01-01T23:59:59.000Z

75

Photovoltaic Materials  

SciTech Connect (OSTI)

The goal of the current project was to help make the US solar industry a world leader in the manufacture of thin film photovoltaics. The overall approach was to leverage ORNLs unique characterization and processing technologies to gain a better understanding of the fundamental challenges for solar cell processing and apply that knowledge to targeted projects with industry members. ORNL has the capabilities in place and the expertise required to understand how basic material properties including defects, impurities, and grain boundaries affect the solar cell performance. ORNL also has unique processing capabilities to optimize the manufacturing process for fabrication of high efficiency and low cost solar cells. ORNL recently established the Center for Advanced Thin-film Systems (CATS), which contains a suite of optical and electrical characterization equipment specifically focused on solar cell research. Under this project, ORNL made these facilities available to industrial partners who were interested in pursuing collaborative research toward the improvement of their product or manufacturing process. Four specific projects were pursued with industrial partners: Global Solar Energy is a solar industry leader in full scale production manufacturing highly-efficient Copper Indium Gallium diSelenide (CIGS) thin film solar material, cells and products. ORNL worked with GSE to develop a scalable, non-vacuum, solution technique to deposit amorphous or nanocrystalline conducting barrier layers on untextured stainless steel substrates for fabricating high efficiency flexible CIGS PV. Ferro Corporations Electronic, Color and Glass Materials (ECGM) business unit is currently the worlds largest supplier of metallic contact materials in the crystalline solar cell marketplace. Ferros ECGM business unit has been the world's leading supplier of thick film metal pastes to the crystalline silicon PV industry for more than 30 years, and has had operational cells and modules in the field for 25 years. Under this project, Ferro leveraged world leading analytical capabilities at ORNL to characterize the paste-to-silicon interface microstructure and develop high efficiency next generation contact pastes. Ampulse Corporation is developing a revolutionary crystalline-silicon (c-Si) thin-film solar photovoltaic (PV) technology. Utilizing uniquely-textured substrates and buffer materials from the Oak Ridge National Laboratory (ORNL), and breakthroughs in Hot-Wire Chemical Vapor Deposition (HW-CVD) techniques in epitaxial silicon developed at the National Renewable Energy Laboratory (NREL), Ampulse is creating a solar technology that is tunable in silicon thickness, and hence in efficiency and economics, to meet the specific requirements of multiple solar PV applications. This project focused on the development of a high rate deposition process to deposit Si, Ge, and Si1-xGex films as an alternate to hot-wire CVD. Mossey Creek Solar is a start-up company with great expertise in the solar field. The primary interest is to create and preserve jobs in the solar sector by developing high-yield, low-cost, high-efficiency solar cells using MSC-patented and -proprietary technologies. The specific goal of this project was to produce large grain formation in thin, net-shape-thickness mc-Si wafers processed with high-purity silicon powder and ORNL's plasma arc lamp melting without introducing impurities that compromise absorption coefficient and carrier lifetime. As part of this project, ORNL also added specific pieces of equipment to enhance our ability to provide unique insight for the solar industry. These capabilities include a moisture barrier measurement system, a combined physical vapor deposition and sputtering system dedicated to cadmium-containing deposits, adeep level transient spectroscopy system useful for identifying defects, an integrating sphere photoluminescence system, and a high-speed ink jet printing system. These tools were combined with others to study the effect of defects on the performance of crystalline silicon and

Duty, C.; Angelini, J.; Armstrong, B.; Bennett, C.; Evans, B.; Jellison, G. E.; Joshi, P.; List, F.; Paranthaman, P.; Parish, C.; Wereszczak, A.

2012-10-15T23:59:59.000Z

76

EELE408 Photovoltaics Lecture 15 Photovoltaic Devices  

E-Print Network [OSTI]

1 EELE408 Photovoltaics Lecture 15 Photovoltaic Devices Dr. Todd J. Kaiser tjkaiser) Demonstrated the photovoltaic effect Best results with UV or blue light 2 g Electrodes covered with light of photovoltaic effect in an all solid state device Several decades before the effect could be explained Fritts

Kaiser, Todd J.

77

Amorphous Silicon-Carbon Nanostructure Photovoltaic Devices  

E-Print Network [OSTI]

and Photovoltaic Performance . . . . . . . . . . . . . . .Amorphous Silicon as a Photovoltaic Material 2.1.2ii Photovoltaic Model . . . . . . . . . . .

Schriver, Maria Christine

2012-01-01T23:59:59.000Z

78

Interdisciplinary Institute for Innovation What cost for photovoltaic  

E-Print Network [OSTI]

Interdisciplinary Institute for Innovation What cost for photovoltaic modules in 2020? Lessons from@mines-paristech.fr hal-00805668,version2-27May2013 #12;1 What cost for photovoltaic modules in 2020? Lessons from Abstract Except in few locations, photovoltaic generated electricity remains considerably more expensive

Boyer, Edmond

79

Nanoscience and Nanostructures for Photovoltaics and Solar Fuels  

E-Print Network [OSTI]

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

Wu, Zhigang

80

Photovoltaic Installations at Williams College Ruth Aronoff  

E-Print Network [OSTI]

generation using solar power. Photovoltaic (PV) panel installations are a simple way for the College facilities, it is now evaluating in detail the environmental impact of these actions. In addition to making1 Photovoltaic Installations at Williams College Ruth Aronoff Williams Luce Project SUMMARY

Aalberts, Daniel P.

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


81

Photovoltaic roof heat flux  

E-Print Network [OSTI]

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

Samady, Mezhgan Frishta

2011-01-01T23:59:59.000Z

82

INTEGRATING PHOTOVOLTAIC SYSTEMS  

E-Print Network [OSTI]

INTEGRATING PHOTOVOLTAIC SYSTEMS INTO PUBLIC SECTOR PERFORMANCE CONTRACTS IN DELAWARE FINAL for Energy and Environmental Policy University of Delaware February 2006 #12;INTEGRATING PHOTOVOLTAIC..................................................................................................... 1 1.2 Photovoltaics in Performance Contracts: An Overview

Delaware, University of

83

Photovoltaics Life Cycle Analysis  

E-Print Network [OSTI]

1 Photovoltaics Life Cycle Analysis Vasilis Fthenakis Center of Life Cycle Analysis Earth & Environmental Engineering Department Columbia University and National Photovoltaic (PV) EHS Research Center (air, water, solid) M, Q E PV array Photovoltaic modules Balance of System (BOS) (Inverters

84

Improving Vortex Generators to Enhance the Performance of Air-Cooled Condensers in a Geothermal Power Plant  

SciTech Connect (OSTI)

This report summarizes work at the Idaho National Laboratory to develop strategies to enhance air-side heat transfer in geothermal air-cooled condensers such that it should not significantly increase pressure drop and parasitic fan pumping power. The work was sponsored by the U.S. Department of Energy, NEDO (New Energy and Industrial Technology Development Organization) of Japan, Yokohama National University, and the Indian Institute of Technology, Kanpur, India. A combined experimental and numerical investigation was performed to investigate heat transfer enhancement techniques that may be applicable to largescale air-cooled condensers such as those used in geothermal power applications. A transient heat transfer visualization and measurement technique was employed in order to obtain detailed distributions of local heat transfer coefficients on model fin surfaces. Pressure drop measurements were obtained for a variety of tube and winglet configurations using a single-channel flow apparatus that included four tube rows in a staggered array. Heat transfer and pressure drop measurements were also acquired in a separate multiple-tube row apparatus in the Single Blow Test Facility. In addition, a numerical modeling technique was developed to predict local and average heat transfer for these low-Reynolds number flows, with and without winglets. Representative experimental and numerical results were obtained that reveal quantitative details of local finsurface heat transfer in the vicinity of a circular tube with a single delta winglet pair downstream of the cylinder. Heat transfer and pressure-drop results were obtained for flow Reynolds numbers based on channel height and mean flow velocity ranging from 700 to 6500. The winglets were of triangular (delta) shape with a 1:2 or 1:3 height/length aspect ratio and a height equal to 90% of the channel height. Overall mean fin-surface heat transfer results indicate a significant level of heat transfer enhancement (in terms of Colburn j-factor) associated with deployment of the winglets with circular as well as oval tubes. In general, toe-in (common flow up) type winglets appear to have better performance than the toe-out (common flow down) type winglets. Comparisons of heat transfer and pressure drop results for the elliptical tube versus a circular tube with and without winglets are provided. During the course of their independent research, all of the researchers have established that about 10 to 30% enhancement in Colburn j-factor is expected. However, actual increase in heat transfer rate from a heat exchanger employing finned tubes with winglets may be smaller, perhaps on the order of 2 to 5%. It is also concluded that for any specific application, more full-size experimentation is needed to optimize the winglet design for a specific heat exchanger application. If in place of a circular tube, an oval tube can be economically used in a bundle, it is expected that the pressure drop across the tube bundle with the application of vortex generators (winglets) will be similar to that in a conventional circular tube bundle. It is hoped that the results of this research will demonstrate the benefits of applying vortex generators (winglets) on the fins to improve the heat transfer from the air-side of the tube bundle.

Manohar S. Sohal

2005-09-01T23:59:59.000Z

85

World Conference on Photovoltaic Conversion, Hawaii, May 8-12, 2006 QUANTIFYING THE LIFE-CYCLE ENVIRONMENTAL PROFILE OF PHOTOVOLTAICS  

E-Print Network [OSTI]

IEEE 4 th World Conference on Photovoltaic Conversion, Hawaii, May 8-12, 2006 QUANTIFYING THE LIFE-CYCLE ENVIRONMENTAL PROFILE OF PHOTOVOLTAICS AND COMPARISONS WITH OTHER ELECTRICITY-GENERATING TECHNOLOGIES V and Australian studies portrayed photovoltaic systems as causing significant life-cycle environmental and health

86

Aternating current photovoltaic building block  

DOE Patents [OSTI]

A modular apparatus for and method of alternating current photovoltaic power generation comprising via a photovoltaic module, generating power in the form of direct current; and converting direct current to alternating current and exporting power via one or more power conversion and transfer units attached to the module, each unit comprising a unitary housing extending a length or width of the module, which housing comprises: contact means for receiving direct current from the module; one or more direct current-to-alternating current inverters; an alternating current bus; and contact means for receiving alternating current from the one or more inverters.

Bower, Ward Issac; Thomas, Michael G.; Ruby, Douglas S.

2004-06-15T23:59:59.000Z

87

Economical Condensing Turbines?  

E-Print Network [OSTI]

an engineer decide when to conduct an in depth study of the economics either in the company or outside utilizing professional engineers who are experts in this type of project. Condensing steam turbines may not be economical when the fuel is purchased...Economical Condensing Turbines? by J.E.Dean, P.E. Steam turbines have long been used at utilities and in industry to generate power. There are three basic types of steam turbines: condensing, letdown 1 and extraction/condensing. ? Letdown...

Dean, J. E.

88

Key condenser failure mechanisms  

SciTech Connect (OSTI)

Eight practical lessons highlight many of the factors that can influence condenser tube corrosion at coal-fired utilities and the effects contaminant in-leakage can have on steam generating units. 1 ref., 4 figs.

Buecker, B.

2009-04-15T23:59:59.000Z

89

Photovoltaic module reliability workshop  

SciTech Connect (OSTI)

The paper and presentations compiled in this volume form the Proceedings of the fourth in a series of Workshops sponsored by Solar Energy Research Institute (SERI/DOE) under the general theme of photovoltaic module reliability during the period 1986--1990. The reliability Photo Voltaic (PV) modules/systems is exceedingly important along with the initial cost and efficiency of modules if the PV technology has to make a major impact in the power generation market, and for it to compete with the conventional electricity producing technologies. The reliability of photovoltaic modules has progressed significantly in the last few years as evidenced by warranties available on commercial modules of as long as 12 years. However, there is still need for substantial research and testing required to improve module field reliability to levels of 30 years or more. Several small groups of researchers are involved in this research, development, and monitoring activity around the world. In the US, PV manufacturers, DOE laboratories, electric utilities and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in this field were brought together under SERI/DOE sponsorship to exchange the technical knowledge and field experience as related to current information in this important field. The papers presented here reflect this effort.

Mrig, L. (ed.)

1990-01-01T23:59:59.000Z

90

Photovoltaics: New opportunities for utilities  

SciTech Connect (OSTI)

This publication presents information on photovoltaics. The following topics are discussed: Residential Photovoltaics: The New England Experience Builds Confidence in PV; Austin's 300-kW Photovoltaic Power Station: Evaluating the Breakeven Costs; Residential Photovoltaics: The Lessons Learned; Photovoltaics for Electric Utility Use; Least-Cost Planning: The Environmental Link; Photovoltaics in the Distribution System; Photovoltaic Systems for the Rural Consumer; The Issues of Utility-Intertied Photovoltaics; and Photovoltaics for Large-Scale Use: Costs Ready to Drop Again.

Not Available

1991-07-01T23:59:59.000Z

91

Retrospective modeling of the merit-order effect on wholesale electricity prices from distributed photovoltaic generation in the  

E-Print Network [OSTI]

Retrospective modeling of the merit-order effect on wholesale electricity prices from distributed, the depression in wholesale prices has significant value. c 5 GW of solar generation would have saved $1.8 billion in the market over two years. c The depression of wholesale prices offsets the cost of support

Sandiford, Mike

92

IEEE JOURNAL OF PHOTOVOLTAICS 1 Optimal Dispatch of Residential Photovoltaic  

E-Print Network [OSTI]

IEEE JOURNAL OF PHOTOVOLTAICS 1 Optimal Dispatch of Residential Photovoltaic Inverters Under of existing low- voltage distribution systems with high photovoltaic (PV) gen- eration have focused relaxation techniques. Index Terms--Distribution networks, microgrids, photovoltaic systems, inverter control

Giannakis, Georgios

93

Photovoltaic Subcontract Program, FY 1991  

SciTech Connect (OSTI)

This report summarizes the fiscal year (FY) 1991 (October 1, 1990, through September 30, 1991) progress of the subcontracted photovoltaic (PV) research and development (R D) performed under the Photovoltaic Advanced Research and Development Project at the National Renewable Energy Laboratory (NREL) -- formerly the Solar Energy Research Institute (SERI). The mission of the national PV program is to develop PV technology for large-scale generation of economically competitive electric power in the United States. The technical sections of the report cover the main areas of the subcontract program: the Amorphous Silicon Research Project, Polycrystalline Thin Films, Crystalline Silicon Materials Research, High-Efficiency Concepts, the New Ideas Program, the University Participation Program, and the Photovoltaic Manufacturing Technology (PVMaT) project. Technical summaries of each of the subcontracted programs provide a discussion of approaches, major accomplishments in FY 1991, and future research directions.

Not Available

1992-03-01T23:59:59.000Z

94

Methods for Analyzing the Benefits and Costs of Distributed Photovoltaic Generation to the U.S. Electric Utility System  

SciTech Connect (OSTI)

This report outlines the methods, data, and tools that could be used at different levels of sophistication and effort to estimate the benefits and costs of DGPV. In so doing, we identify the gaps in current benefit-cost-analysis methods, which we hope will inform the ongoing research agenda in this area. The focus of this report is primarily on benefits and costs from the utility or electricity generation system perspective. It is intended to provide useful background information to utility and regulatory decision makers and their staff, who are often being asked to use or evaluate estimates of the benefits and cost of DGPV in regulatory proceedings. Understanding the technical rigor of the range of methods and how they might need to evolve as DGPV becomes a more significant contributor of energy to the electricity system will help them be better consumers of this type of information. This report is also intended to provide information to utilities, policy makers, PV technology developers, and other stakeholders, which might help them maximize the benefits and minimize the costs of integrating DGPV into a changing electricity system.

Denholm, P.; Margolis, R.; Palmintier, B.; Barrows, C.; Ibanez, E.; Bird, L.; Zuboy, J.

2014-09-01T23:59:59.000Z

95

Condensing vs. Non-Condensing  

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

Non-Condensing Gas Appliances Gas Non-Condensing Furnace * Burners are ignited *Blower motor is turned on *Cool or return air enters, is filtered and blown through furnace heat...

96

Future contingencies and photovoltaic system worth  

SciTech Connect (OSTI)

The value of dispersed photovoltaic systems connected to the utility grid has been calculated using the General Electric Optimized Generation Planning program. The 1986 to 2001 time period was used for this study. Photovoltaic systems were dynamically integrated, up to 5% total capacity, into 9 NERC based regions under a range of future fuel and economic contingencies. Value was determined by the change in revenue requirements due to the photovoltaic additions. Displacement of high cost fuel was paramount to value, while capacity displacement was highly variable and dependent upon regional fuel mix.

Jones, G. J.; Thomas, M. G.; Bonk, G. J.

1982-01-01T23:59:59.000Z

97

Making the most of residential photovoltaic systems  

SciTech Connect (OSTI)

Making the Most of Residential Photovoltaic Systems, was recently produced by NREL Communications and Public Affairs. It showcases a demonstration project in Florida that produced some remarkable results by incorporating both energy efficiency and photovoltaic systems into newly built housing. The brochure points up the benefits of making wise personal choices about energy use, and how large-scale use of advanced energy technologies can benefit the nation. This is one of a series of brochures that presents stimulating information about photovoltaics, with a goal of helping to push this technology into the power-generation mix in different utilities, communities, and states.

Moon, S.; Parker, D.; Hayter, S.

1999-10-18T23:59:59.000Z

98

Request for Information on Photovoltaic Module Recycling  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy SunShot Initiative requests feedback from industry, academia, research laboratories, government agencies, and other stakeholders on issues related to photovoltaic (PV) module recycling technology. SunShot intends to understand the current state of recycling technology and the areas of research that could lead to impactful recycling technologies to support the developing PV industry. The intent of this request for information is to generate discussion related to planning for the end of life of photovoltaic modules and to create a list of high impact research topics in photovoltaics recycling.

99

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,...

100

Sandia National Laboratories: Photovoltaic Regional Testing Center...  

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

Grid Integration, Modeling, Modeling & Analysis, News, News & Events, Partnership, Photovoltaic, Photovoltaic Regional Testing Center (PV RTC), Photovoltaic Systems Evaluation...

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


101

Nanocrystal Photovoltaics: The Case of Cu2S-CdS  

E-Print Network [OSTI]

in a low-cost solution-processed photovoltaic device. Thecost and conversion efficiency in favorable directions. The photovoltaiccost. This work provides a proof-of-concept for a next-generation photovoltaic

Rivest, Jessica Louis Baker

2011-01-01T23:59:59.000Z

102

Photovoltaic solar concentrator  

DOE Patents [OSTI]

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.

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

2012-12-11T23:59:59.000Z

103

Electroluminescence in photovoltaic cell  

E-Print Network [OSTI]

Here we propose two methods to get electroluminescence images from photovoltaic cells in a school or home lab.

Petraglia, Antonio; 10.1088/0031-9120/46/5/F01

2011-01-01T23:59:59.000Z

104

Photovoltaics (Fact Sheet)  

SciTech Connect (OSTI)

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

Not Available

2010-09-01T23:59:59.000Z

105

Photovoltaics (Fact Sheet)  

SciTech Connect (OSTI)

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

Not Available

2011-06-01T23:59:59.000Z

106

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

E-Print Network [OSTI]

??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)

Wong, Alexander Tung-Qiang

2010-01-01T23:59:59.000Z

107

Amorphous silicon photovoltaic devices  

DOE Patents [OSTI]

This invention is a photovoltaic device comprising an intrinsic or i-layer of amorphous silicon and where the photovoltaic device is more efficient at converting light energy to electric energy at high operating temperatures than at low operating temperatures. The photovoltaic devices of this invention are suitable for use in high temperature operating environments.

Carlson, David E.; Lin, Guang H.; Ganguly, Gautam

2004-08-31T23:59:59.000Z

108

EELE408 Photovoltaics Lecture 17 Photovoltaic Modules  

E-Print Network [OSTI]

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

Kaiser, Todd J.

109

NREL Center for Photovoltaics  

ScienceCinema (OSTI)

Solar cells, also called photovoltaics (PV) by solar cell scientists, convert sunlight directly into electricity. Solar cells are often used to power calculators and watches. The performance of a solar cell is measured in terms of its efficiency at turning sunlight into electricity. Only sunlight of certain energies will work efficiently to create electricity, and much of it is reflected or absorbed by the material that make up the cell. Because of this, a typical commercial solar cell has an efficiency of 15%?about one-sixth of the sunlight striking the cell generates electricity. Low efficiencies mean that larger arrays are needed, and that means higher cost. Improving solar cell efficiencies while holding down the cost per cell is an important goal of the PV industry, researchers at the National Renewable Energy Laboratory (NREL) and other U.S. Department of Energy (DOE) laboratories, and they have made significant progress. The first solar cells, built in the 1950s, had efficiencies of less than 4%. For a text version of this video visit http://www.nrel.gov/learning/re_photovoltaics_video_text.html

None

2013-05-29T23:59:59.000Z

110

Transmission System Performance Analysis for High-Penetration Photovoltaics  

SciTech Connect (OSTI)

This study is an assessment of the potential impact of high levels of penetration of photovoltaic (PV) generation on transmission systems. The effort used stability simulations of a transmission system with different levels of PV generation and load.

Achilles, S.; Schramm, S.; Bebic, J.

2008-02-01T23:59:59.000Z

111

Thermal response of photovoltaic cell to laser beam irradiation  

E-Print Network [OSTI]

This paper firstly presents the concept of using dual laser beam to irradiate the photovoltaic cell, so as to investigate the temperature dependency of the efficiency of long distance energy transmission. Next, the model on the multiple reflection and absorption of any monochromatic light in multilayer structure has been established, and the heat generation in photovoltaic cell has been interpreted in this work. Then, the finite element model has been set up to calculate the temperature of photovoltaic cell subjected to laser irradiation. Finally, the effect of temperature elevation on the efficiency and reliability of photovoltaic cell has been discussed to provide theoretical references for designing the light-electricity conversion system.

Yuan, Yu-Chen

2014-01-01T23:59:59.000Z

112

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

113

Photovoltaic transistors based on a steady-state internal polarization effect in asymmetric semiconductor superlattices  

E-Print Network [OSTI]

Photovoltaic transistors based on a steady-state internal polarization effect in asymmetric that a modified structure can generate a steady-state photovoltage. We then propose a new class of photovoltaic novelty is such a photovoltaic transistor (PVT) aspect. Our idea of the PVT arises from the well known

Luryi, Serge

114

Charged Condensation  

E-Print Network [OSTI]

We consider Bose-Einstein condensation of massive electrically charged scalars in a uniform background of charged fermions. We focus on the case when the scalar condensate screens the background charge, while the net charge of the system resides on its boundary surface. A distinctive signature of this substance is that the photon acquires a Lorentz-violating mass in the bulk of the condensate. Due to this mass, the transverse and longitudinal gauge modes propagate with different group velocities. We give qualitative arguments that at high enough densities and low temperatures a charged system of electrons and helium-4 nuclei, if held together by laboratory devices or by force of gravity, can form such a substance. We briefly discuss possible manifestations of the charged condensate in compact astrophysical objects.

Gregory Gabadadze; Rachel A. Rosen

2007-08-24T23:59:59.000Z

115

Photovoltaics Business Models  

SciTech Connect (OSTI)

This report summarizes work to better understand the structure of future photovoltaics business models and the research, development, and demonstration required to support their deployment.

Frantzis, L.; Graham, S.; Katofsky, R.; Sawyer, H.

2008-02-01T23:59:59.000Z

116

Concentrating Photovoltaics (Presentation)  

SciTech Connect (OSTI)

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

Kurtz, S.

2009-01-20T23:59:59.000Z

117

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.

118

Lab Breakthrough: Microelectronic Photovoltaics  

Broader source: Energy.gov [DOE]

Sandia's glitter-sized photovoltaic cells are highly efficient and cost effective the perfect combination for a game-changing technology.

119

Photovoltaic Resources and Technologies  

Broader source: Energy.gov [DOE]

This page provides a brief overview of photovoltaic (PV) technologies supplemented by specific information to apply PV within the Federal sector.

120

National Laboratory Photovoltaics Research  

Broader source: Energy.gov [DOE]

DOE supports photovoltaic (PV) research and development and facilities at its national laboratories to accelerate progress toward achieving the SunShot Initiative's technological and economic...

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


121

NREL Photovoltaic Program FY 1996 Annual Report  

SciTech Connect (OSTI)

This report summarizes the in-house and subcontract research and development (R&D) activities under the National Renewable Energy Laboratory (NREL) Photovoltaics (PV) Program from October 1, 1995 through September 30, 1996 (fiscal year [FY] 1996). The NREL PV Program is part of the U.S. Department of Energy's (DOE) National Photovoltaics Program, as described in the DOE Photovoltaics Program Plan, FY 1991 - FY 1995. The mission of the DOE National Photovoltaics Program is to: "Work in partnership with U.S. industry to develop and deploy photovoltaic technology for generating economically competitive electric power, making photovoltaics an important contributor to the nation's and the world's energy use and environmental improvement. The two primary goals of the national program are to (1) maintain the U.S. PV industry's world leadership in research and technology development and (2) help the U.S. industry remain a major, profitable force in the world market. The NREL PV Program provides leadership and support to the national program toward achieving its mission and goals.

Not Available

1997-08-01T23:59:59.000Z

122

Keeping condensers clean  

SciTech Connect (OSTI)

The humble condenser is among the biggest contributors to a steam power plant's efficiency. But although a clean condenser can provide great economic benefit, a dirty one can raise plant heat rate, resulting in large losses of generation revenue and/or unnecessarily high fuel bills. Conventional methods for cleaning fouled tubes range form chemicals to scrapers to brushes and hydro-blasters. This article compares the available options and describes how one power station, Omaha Public Power District's 600 MW North Omaha coal-fired power station, cleaned up its act. The makeup and cooling water of all its five units comes from the Missouri River. 6 figs.

Wicker, K.

2006-04-15T23:59:59.000Z

123

Use of photovoltaics for waste heat recovery  

DOE Patents [OSTI]

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.

Polcyn, Adam D

2013-04-16T23:59:59.000Z

124

Entangled light from Bose-Einstein condensates  

E-Print Network [OSTI]

We propose a method to generate entangled light with a Bose-Einstein condensate trapped in a cavity, a system realized in recent experiments. The atoms of the condensate are trapped in a periodic potential generated by a cavity mode. The condensate is continuously pumped by a laser and spontaneously emits a pair of photons of different frequencies in two distinct cavity modes. In this way, the condensate mediates entanglement between two cavity modes which leak out and can be separated and exhibit continuous variable entanglement. The scheme exploits the experimentally demonstrated strong, steady and collective coupling of condensate atoms to a cavity field.

H. T. Ng; S. Bose

2008-09-30T23:59:59.000Z

125

Photovoltaics industry profile  

SciTech Connect (OSTI)

A description of the status of the US photovoltaics industry is given. Principal end-user industries are identified, domestic and foreign market trends are discussed, and industry-organized and US government-organized trade promotion events are listed. Trade associations and trade journals are listed, and a photovoltaic product manufacturers list is included. (WHK)

None

1980-10-01T23:59:59.000Z

126

Microsystems Enabled Photovoltaics  

ScienceCinema (OSTI)

Sandia's microsystems enabled photovoltaic advances combine mature technology and tools currently used in microsystem production with groundbreaking advances in photovoltaics cell design, decreasing production and system costs while improving energy conversion efficiency. The technology has potential applications in buildings, houses, clothing, portable electronics, vehicles, and other contoured structures.

Gupta, Vipin; Nielson, Greg; Okandan, Murat, Granata, Jennifer; Nelson, Jeff; Haney, Mike; Cruz-Campa, Jose Luiz

2014-06-23T23:59:59.000Z

127

Microsystems Enabled Photovoltaics  

SciTech Connect (OSTI)

Sandia's microsystems enabled photovoltaic advances combine mature technology and tools currently used in microsystem production with groundbreaking advances in photovoltaics cell design, decreasing production and system costs while improving energy conversion efficiency. The technology has potential applications in buildings, houses, clothing, portable electronics, vehicles, and other contoured structures.

Gupta, Vipin; Nielson, Greg; Okandan, Murat, Granata, Jennifer; Nelson, Jeff; Haney, Mike; Cruz-Campa, Jose Luiz

2012-07-02T23:59:59.000Z

128

Tradeoffs between revenue enhancements and emissions reductions with energy storage-coupled photovoltaics .  

E-Print Network [OSTI]

??Energy storage has the potential to dramatically change the operation of photovoltaics by allowing for a delay between generation and use. This flexibility has the (more)

Heidel, Timothy David

2009-01-01T23:59:59.000Z

129

Increased Photovoltaic Power Output via Diffractive Spectrum Separation  

E-Print Network [OSTI]

In this Letter, we report the preliminary demonstration of a new paradigm for photovoltaic power generation that utilizes a broadband diffractive-optical element (BDOE) to efficiently separate sunlight into laterally spaced ...

Kim, Ganghun

130

Photosynthesis-inspired device architectures for organic photovoltaics  

E-Print Network [OSTI]

Organic semiconductor photovoltaics offer a promising route to low-cost, scalable, emissions-free electricity generation. However, achieving higher power conversion efficiencies is critical before these devices can play a ...

Heidel, Timothy David

2010-01-01T23:59:59.000Z

131

Metallic nanostructures for optoelectronic and photovoltaic applications  

E-Print Network [OSTI]

enhanced performance of photovoltaic and photodetector Proc.and H. Wagner, in Photovoltaic Specialists Conference. ,for Optoelectronic and Photovoltaic Applications by Swee Hoe

Lim, Swee Hoe

2009-01-01T23:59:59.000Z

132

DISSERTATION DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS  

E-Print Network [OSTI]

DISSERTATION DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS Submitted by Russell M Reserved #12;ABSTRACT DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS Thin-film photovoltaics

Sites, James R.

133

Scattering Properties of nanostructures : applications to photovoltaics  

E-Print Network [OSTI]

high-efficiency low- cost photovoltaic devices has been thehigh-efficiency low-cost photovoltaic devices has been theoverall per unit cost of photovoltaic modules. Module costs

Derkacs, Daniel

2009-01-01T23:59:59.000Z

134

Steam condensate leakage  

SciTech Connect (OSTI)

Argonne National Laboratory (ANL) is a multi-program research and development center owned by the United States Department of Energy and operated by the University of Chicago. The majority of the buildings on site use steam for heating and other purposes. Steam is generated from liquid water at the site`s central boiler house and distributed around the site by means of large pipes both above and below the ground. Steam comes into each building where it is converted to liquid condensate, giving off heat which can be used by the building. The condensate is then pumped back to the boiler house where it will be reheated to steam again. The process is continual but is not perfectly efficient. A substantial amount of condensate is being lost somewhere on site. The lost condensate has both economic and environmental significance. To compensate for lost condensate, makeup water must be added to the returned condensate at the boiler house. The water cost itself will become significant in the future when ANL begins purchasing Lake Michigan water. In addition to the water cost, there is also the cost of chemically treating the water to remove impurities, and there is the cost of energy required to heat the water, as it enters the boiler house 1000 F colder than the condensate return. It has been estimated that only approximately 60% of ANL`s steam is being returned as condensate, thus 40% is being wasted. This is quite costly to ANL and will become significantly more costly in the future when ANL begins purchasing water from Lake Michigan. This study locates where condensate loss is occurring and shows how much money would be saved by repairing the areas of loss. Shortly after completion of the study, one of the major areas of loss was repaired. This paper discusses the basis for the study, the areas where losses are occurring, the potential savings of repairing the losses, and a hypothesis as to where the unaccounted for loss is occurring.

Midlock, E.B.; Thuot, J.R.

1996-07-01T23:59:59.000Z

135

ROBOTIC DEVICE FOR CLEANING PHOTOVOLTAIC PANEL ARRAYS  

E-Print Network [OSTI]

-Corresponding Author, ymarkopoulos@greenproject.gr, +30-210-60.90.880 With growing costs of electricity and concern. The main method for harnessing solar power is with arrays made up of photovoltaic (PV) panels. Accumulation, and it is vital to maximize the power generating potential during daily service. The accumulation of dust

Mavroidis, Constantinos

136

Photovoltaics for municipal planners  

SciTech Connect (OSTI)

This booklet is intended for city and county government personnel, as well as community organizations, who deal with supplying, regulating, or recommending electric power resources. Specifically, this document deals with photovoltaic (PV) power, or power from solar cells, which is currently the most cost-effective energy source for electricity requirements that are relatively small, located in isolated areas, or difficult to serve with conventional technology. Recently, PV has been documented to be more cost-effective than conventional alternatives (such as line extensions or engine generators) in dozens of applications within the service territories of electric, gas, and communications utilities. Here, we document numerous cost-effective urban applications, chosen by planners and utilities because they were the most cost-effective option or because they were appropriate for environmental or logistical reasons. These applications occur within various municipal departments, including utility, parks and recreation, traffic engineering, transportation, and planning, and they include lighting applications, communications equipment, corrosion protection, irrigation control equipment, remote monitoring, and even portable power supplies for emergency situations.

Not Available

1993-04-01T23:59:59.000Z

137

Annual Report: Photovoltaic Subcontract Program FY 1991  

SciTech Connect (OSTI)

This report summarizes the fiscal year (FY) 1991 (October 1, 1990, through September 30, 1991) progress of the subcontracted photovoltaic (PV) research and development (R&D) performed under the Photovoltaic Advanced Research and Development Project at the National Renewable Energy Laboratory (NREL)-formerly the Solar Energy Research Institute (SERI). The mission of the national PV program is to develop PV technology for large-scale generation of economically competitive electric power in the United States. The technical sections of the report cover the main areas of the subcontract program: the Amorphous Silicon Research Project, Polycrystalline Thin Films, Crystalline Silicon Materials Research, High Efficiency Concepts, the New Ideas Program, the University Participation Program, and the Photovoltaic Manufacturing Technology (PVMaT) project. Technical summaries of each of the subcontracted programs provide a discussion of approaches, major accomplishments in FY 1991, and future research directions.

Summers, K. A.

1992-03-01T23:59:59.000Z

138

Optical Refrigeration for Ultra-Efficient Photovoltaics  

E-Print Network [OSTI]

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...

Manor, Assaf; Rotschild, Carmel

2014-01-01T23:59:59.000Z

139

Photovoltaic Subcontract Program. Annual report, FY 1992  

SciTech Connect (OSTI)

This report summarizes the fiscal year (FY) 1992 progress of the subcontracted photovoltaic (PV) research and development (R&D) performed under the Photovoltaic Advanced Research and Development Project at the National Renewable Energy Laboratory (NREL)-formerly the Solar Energy Research Institute (SERI). The mission of the national PV program is to develop PV technology for large-scale generation of economically competitive electric power in the United States. The technical sections of the report cover the main areas of the subcontract program: the Crystalline Materials and Advanced Concepts project, the Polycrystalline Thin Films project, Amorphous Silicon Research project, the Photovoltaic Manufacturing Technology (PVMaT) project, PV Module and System Performance and Engineering project, and the PV Analysis and Applications Development project. Technical summaries of each of the subcontracted programs provide a discussion of approaches, major accomplishments in FY 1992, and future research directions.

Not Available

1993-03-01T23:59:59.000Z

140

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

E-Print Network [OSTI]

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 ...

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

2008-01-01T23:59:59.000Z

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


141

Squeezed-state generation via nonlinear atom-atom interaction in the atomic field of a Bose-Einstein condensate interacting with an optical cavity  

E-Print Network [OSTI]

In this paper, we investigate theoretically a system consisting of a one dimensional Bose-Einstein condensate trapped inside the optical lattice of an optical cavity. In the weak-interaction regime and under the Bogoliubov approximation, the wave function of the Bose-Einstein condensate can be described by a classical field (condensate mode) having some quantum fluctuations (the Bogoliubov mode) about the mean value. Such a system behaves as a so-called atomic parametric amplifier, similar to an optical parametric amplifier, where the condensate and the Bogoliubov modes play respectively, the roles of the pump field and the signal mode in the degenerate parametric amplifier and the s-wave scattering frequency of atom-atom interaction plays the role of the nonlinear gain parameter. We show that using the nonlinear effect of atomic collisions, how one can manipulate and control the state of the Bogoliubov mode and produce squeezed states.

A. Dalafi; M. H. Naderi; M. Soltanolkotabi

2014-03-29T23:59:59.000Z

142

Photovoltaic module and interlocked stack of photovoltaic modules  

SciTech Connect (OSTI)

One embodiment relates to an arrangement of photovoltaic modules configured for transportation. The arrangement includes a plurality of photovoltaic modules, each photovoltaic module including a frame. A plurality of individual male alignment features and a plurality of individual female alignment features are included on each frame. Adjacent photovoltaic modules are interlocked by multiple individual male alignment features on a first module of the adjacent photovoltaic modules fitting into and being surrounded by corresponding individual female alignment features on a second module of the adjacent photovoltaic modules. Other embodiments, features and aspects are also disclosed.

Wares, Brian S.

2014-09-02T23:59:59.000Z

143

Photovoltaic Research Facilities  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy (DOE) funds photovoltaic (PV) research and development (R&D) at its national laboratory facilities located throughout the country. To encourage further innovation,...

144

Organic Photovoltaics Research  

Broader source: Energy.gov [DOE]

DOE funds research and development projects related to organic photovoltaics (OPV) due to the unique benefits it offers. Below are a list of the projects, summary of the benefits, and discussion on...

145

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.

146

Three-dimensional photovoltaics  

E-Print Network [OSTI]

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 ...

Myers, Bryan

147

Crystalline Silicon Photovoltaics Research  

Broader source: Energy.gov [DOE]

DOE supports crystalline silicon photovoltaic (PV) research and development efforts that lead to market-ready technologies. Below are a list of the projects, summary of the benefits, and discussion...

148

Nanocarbon-Based Photovoltaics  

E-Print Network [OSTI]

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 ...

Bernardi, Marco

149

Abstract--The many different techniques for maximum power point tracking of photovoltaic arrays are discussed. The  

E-Print Network [OSTI]

Abstract--The many different techniques for maximum power point tracking of photovoltaic arrays on implementation. This manuscript should serve as a convenient reference for future work in photovoltaic power generation. Index Terms--maximum power point tracking, MPPT, photovoltaic, PV. I. INTRODUCTION RACKING

Chapman, Patrick

150

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...

151

General Services Administration Photovoltaics Project in Sacramento...  

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

General Services Administration Photovoltaics Project in Sacramento, California General Services Administration Photovoltaics Project in Sacramento, California Document describes a...

152

Operational results from the Saudi Solar Village Photovoltaic power system  

SciTech Connect (OSTI)

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.

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

1982-08-01T23:59:59.000Z

153

Air-cooled vacuum steam condenser  

SciTech Connect (OSTI)

This patent describes a steam powered system. It comprises: a turbine for converting steam energy into mechanical energy upon expansion of steam therein, a boiler for generating steam to be fed to the turbine, and a conduit arrangement coupling the boiler to the turbine and then recoupling the turbine exhaust to the boiler through steam condensing mechanisms. The condensing mechanisms including: a plurality of finned tubes through which the expanded exhaust steam flows and is condensed; a plurality of bundle from headers at the lower ends of the condensing tubes for receiving exhaust steam from the turbine; a plurality of bundle divided rear headers, one for each tube row in the bundle, at the higher ends of the condensing tubes for receiving non-condensible gases; and means in the rear and last headers to remove non-condensible gasses from the rear headers along their full length.

Larinoff, M.W.

1990-03-06T23:59:59.000Z

154

Condensation ---conditional density propagation for visual Michael Isard and Andrew Blake,  

E-Print Network [OSTI]

Condensation --- conditional density propagation for visual tracking Michael Isard and Andrew Blake simultaneous alternative hypotheses. The Condensation algorithm uses ``factored sampling'', previously applied by a randomly generated set. Condensation uses learned dynamical models, together with visual observations

155

Thermionic-photovoltaic energy converter  

SciTech Connect (OSTI)

A thermionic-photovoltaic energy conversion device comprises a thermionic diode mounted within a hollow tubular photovoltaic converter. The thermionic diode maintains a cesium discharge for producing excited atoms that emit line radiation in the wavelength region of 850 nm to 890 nm. The photovoltaic converter is a silicon or galium arsenide photovoltaic cell having bandgap energies in this same wavelength region for optimum cell efficiency.

Chubb, D. L.

1985-07-09T23:59:59.000Z

156

Nanowires enabling strained photovoltaics  

SciTech Connect (OSTI)

Photovoltaic nano-devices have largely been relying on charge separation in conventional p-n junctions. Junction formation via doping, however, imposes major challenges in process control. Here, we report on a concept for photovoltaic energy conversion at the nano scale without the need for intentional doping. Our approach relies on charge carrier separation in inhomogeneously strained germanium nanowires (Ge NWs). This concept utilizes the strain-induced gradient in bandgap along tapered NWs. Experimental data confirms the feasibility of strain-induced charge separation in individual vapor-liquid-solid grown Ge NW devices with an internal quantum efficiency of ?5%. The charge separation mechanism, though, is not inherently limited to a distinct material. Our work establishes a class of photovoltaic nano-devices with its opto-electronic properties engineered by size, shape, and applied strain.

Greil, J.; Bertagnolli, E.; Lugstein, A., E-mail: alois.lugstein@tuwien.ac.at [Institute of Solid State Electronics, Vienna University of Technology, Floragasse 7, 1040 Vienna (Austria); Birner, S. [nextnano GmbH, Sdmhrenstr. 21, 85586 Poing (Germany)

2014-04-21T23:59:59.000Z

157

Apparatus and method for maximizing power delivered by a photovoltaic array  

DOE Patents [OSTI]

A method and apparatus for maximizing the electric power output of a photovoltaic array connected to a battery where the voltage across the photovoltaic array is adjusted through a range of voltages to find the voltage across the photovoltaic array that maximizes the electric power generated by the photovoltaic array and then is held constant for a period of time. After the period of time has elapsed, the electric voltage across the photovoltaic array is again adjusted through a range of voltages and the process is repeated. The electric energy and the electric power generated by the photovoltaic array is delivered to the battery which stores the electric energy and the electric power for later delivery to a load.

Muljadi, Eduard (Golden, CO); Taylor, Roger W. (Golden, CO)

1998-01-01T23:59:59.000Z

158

Apparatus and method for maximizing power delivered by a photovoltaic array  

DOE Patents [OSTI]

A method and apparatus for maximizing the electric power output of a photovoltaic array connected to a battery where the voltage across the photovoltaic array is adjusted through a range of voltages to find the voltage across the photovoltaic array that maximizes the electric power generated by the photovoltaic array and then is held constant for a period of time. After the period of time has elapsed, the electric voltage across the photovoltaic array is again adjusted through a range of voltages and the process is repeated. The electric energy and the electric power generated by the photovoltaic array is delivered to the battery which stores the electric energy and the electric power for later delivery to a load. 20 figs.

Muljadi, E.; Taylor, R.W.

1998-05-05T23:59:59.000Z

159

Fractal-based cloud shadow and irradiance model for power system analysis with high penetration of photovoltaics.  

E-Print Network [OSTI]

??Distributed photovoltaic (PV) power generation systems are being rapidly deployed worldwide, causing technical problems such as reverse power flows, voltage rise and abnormal operation of (more)

Cai, Chengrui

2014-01-01T23:59:59.000Z

160

Concentrating photovoltaic solar panel  

DOE Patents [OSTI]

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.

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

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


161

Tradeoffs between revenue enhancements and emissions reductions with energy storage-coupled photovoltaics  

E-Print Network [OSTI]

Energy storage has the potential to dramatically change the operation of photovoltaics by allowing for a delay between generation and use. This flexibility has the potential to impact both the revenue from generating ...

Heidel, Timothy David

2009-01-01T23:59:59.000Z

162

Confinement Contains Condensates  

SciTech Connect (OSTI)

Dynamical chiral symmetry breaking and its connection to the generation of hadron masses has historically been viewed as a vacuum phenomenon. We argue that confinement makes such a position untenable. If quark-hadron duality is a reality in QCD, then condensates, those quantities that have commonly been viewed as constant empirical mass-scales that fill all spacetime, are instead wholly contained within hadrons; i.e., they are a property of hadrons themselves and expressed, e.g., in their Bethe-Salpeter or light-front wave functions. We explain that this paradigm is consistent with empirical evidence, and incidentally expose misconceptions in a recent Comment.

Brodsky, Stanley J.; Roberts, Craig D.; Shrock, Robert; Tandy, Peter C.

2012-03-12T23:59:59.000Z

163

Detailed balance limit of power conversion efficiency for organic photovoltaics  

SciTech Connect (OSTI)

A fundamental difference between inorganic photovoltaic (IPV) and organic photovoltaic (OPV) cells is that charges are generated at the interface in OPV cells, while free charges can be generated in the bulk in IPV cells. In OPV cells, charge generation involves intrinsic energy losses to dissociate excitons at the interface between the donor and acceptor. By taking into account the energy losses, we show the theoretical limits of the power conversion efficiency set by radiative recombination of the carriers on the basis of the detailed balance relation between radiation from the cell and black-body radiation.

Seki, Kazuhiko, E-mail: k-seki@aist.go.jp [NRI, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, Higashi 1-1-1, Tsukuba, Ibaraki 305-8565 (Japan)] [NRI, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, Higashi 1-1-1, Tsukuba, Ibaraki 305-8565 (Japan); Furube, Akihiro [RIIF, AIST Tsukuba Central 2, Umezono 1-1-1, Tsukuba, Ibaraki 305-8568 (Japan)] [RIIF, AIST Tsukuba Central 2, Umezono 1-1-1, Tsukuba, Ibaraki 305-8568 (Japan); Yoshida, Yuji [RCPVT, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, Higashi 1-1-1, Tsukuba, Ibaraki 305-8565 (Japan)] [RCPVT, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 5, Higashi 1-1-1, Tsukuba, Ibaraki 305-8565 (Japan)

2013-12-16T23:59:59.000Z

164

Photovoltaic radiation detector element  

DOE Patents [OSTI]

A radiation detector element is formed of a body of semiconductor material, a coating on the body which forms a photovoltaic junction therewith, and a current collector consisting of narrow metallic strips, the aforesaid coating having an opening therein in the edge of which closely approaches but is spaced from the current collector strips.

Agouridis, D.C.

1980-12-17T23:59:59.000Z

165

Multiple gap photovoltaic device  

DOE Patents [OSTI]

A multiple gap photovoltaic device having a transparent electrical contact adjacent a first cell which in turn is adjacent a second cell on an opaque electrical contact, includes utilizing an amorphous semiconductor as the first cell and a crystalline semiconductor as the second cell.

Dalal, Vikram L. (Newark, DE)

1981-01-01T23:59:59.000Z

166

Thin film photovoltaic cell  

DOE Patents [OSTI]

A thin film photovoltaic cell having a transparent electrical contact and an opaque electrical contact with a pair of semiconductors therebetween includes utilizing one of the electrical contacts as a substrate and wherein the inner surface thereof is modified by microroughening while being macro-planar.

Meakin, John D. (Newark, DE); Bragagnolo, Julio (Newark, DE)

1982-01-01T23:59:59.000Z

167

Photovoltaics (Fact Sheet)  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) works with industry, academia, national laboratories, and other government agencies to advance solar photovoltaics (PV) domestically. The SunShot Initiative aims to achieve widespread, unsubsidized cost-competitiveness through an applied research and development (R&D) portfolio spanning PV materials, devices, and manufacturing technologies.

Not Available

2012-11-01T23:59:59.000Z

168

Photovoltaics (Fact Sheet)  

SciTech Connect (OSTI)

DOE works with national labs, academia, and industry to support the domestic photovoltaics (PV) industry and research enterprise. SunShot aims to achieve widespread, unsubsidized cost-competitiveness through an applied research and development (R&D) portfolio spanning PV materials, devices, and manufacturing technologies.

Not Available

2011-10-01T23:59:59.000Z

169

PHOTOVOLTAICS AND COMMERCIAL BUILDINGS--  

E-Print Network [OSTI]

management of electricity demand. · PV applications are now being integrated directly into building roofs, Valuation of Demand-Side Commercial PV Systems in the United States, we sought to measure the costPHOTOVOLTAICS AND COMMERCIAL BUILDINGS-- A NATURAL MATCH A study highlighting strategic

Perez, Richard R.

170

Advances in modelling of condensation phenomena  

SciTech Connect (OSTI)

The physical parameters in the modelling of condensation phenomena in the CANDU reactor system codes are discussed. The experimental programs used for thermal-hydraulic code validation in the Canadian nuclear industry are briefly described. The modelling of vapour generation and in particular condensation plays a key role in modelling of postulated reactor transients. The condensation models adopted in the current state-of-the-art two-fluid CANDU reactor thermal-hydraulic system codes (CATHENA and TUF) are described. As examples of the modelling challenges faced, the simulation of a cold water injection experiment by CATHENA and the simulation of a condensation induced water hammer experiment by TUF are described.

Liu, W.S.; Zaltsgendler, E. [Ontario Hydro Nuclear, Toronto (Canada); Hanna, B. [Atomic Energy of Canada Limited, Pinawa, Manitoba (Canada)

1997-07-01T23:59:59.000Z

171

Condensation model for the ESBWR passive condensers  

SciTech Connect (OSTI)

In the General Electric's Economic simplified boiling water reactor (GE-ESBWR) the passive containment cooling system (PCCS) plays a major role in containment pressure control in case of an loss of coolant accident. The PCCS condenser must be able to remove sufficient energy from the reactor containment to prevent containment from exceeding its design pressure following a design basis accident. There are three PCCS condensation modes depending on the containment pressurization due to coolant discharge; complete condensation, cyclic venting and flow through mode. The present work reviews the models and presents model predictive capability along with comparison with existing data from separate effects test. The condensation models in thermal hydraulics code RELAP5 are also assessed to examine its application to various flow modes of condensation. The default model in the code predicts complete condensation well, and basically is Nusselt solution. The UCB model predicts through flow well. None of condensation model in RELAP5 predict complete condensation, cyclic venting, and through flow condensation consistently. New condensation correlations are given that accurately predict all three modes of PCCS condensation. (authors)

Revankar, S. T. [Pohang Univ. of Science and Technology, 400 Central Drive, West Lafayette, IN 47906 (United States); Zhou, W.; Wolf, B.; Oh, S. [Purdue Univ., West Lafayette, IN 47906 (United States)

2012-07-01T23:59:59.000Z

172

Secondary condenser Cooling water  

E-Print Network [OSTI]

Receiver Secondary condenser LC LC Reboiler TC PC Cooling water PC FCPC Condenser LC XC Throttling valve ¨ mx my l© ª y s § y m «¬ ly my wx l n® ® x np © ¯ Condenser Column Compressor Receiver Super-heater Decanter Secondary condenser Reboiler Throttling valve Expansion valve Cooling water

Skogestad, Sigurd

173

RECYCLING OF CdTe PHOTOVOLTAIC MODULES: RECOVERY OF CADMIUM AND TELLURIUM Vasilis Fthenakis1, Paul Duby2, Wenming Wang1, Christopher Graves2 & Anuta Belova2  

E-Print Network [OSTI]

RECYCLING OF CdTe PHOTOVOLTAIC MODULES: RECOVERY OF CADMIUM AND TELLURIUM Vasilis Fthenakis1, Paul the recovery of tellurium. Keywords: Photovoltaic, Recycling, CdTe 1. INTRODUCTION Photovoltaic modules acid (sulfuric) /hydrogen peroxide solution mixture to generate a solution that is rich in cadmium

174

Photovoltaic Forecasting: A state of the art B. Espinar, J.L. Aznarte, R. Girard, A.M. Moussa and G. Kariniotakis  

E-Print Network [OSTI]

Photovoltaic Forecasting: A state of the art B. Espinar, J.L. Aznarte, R. Girard, A.M. Moussa and G(0)493678967; FAX: +33 (0)493957535,bella.espinar@mines-paristech.fr Abstract Photovoltaic (PV) energy, together Introduction Photovoltaics (PV) for electricity generation is the fastest-growing energy technology since 2002

Paris-Sud XI, Universit de

175

Condensation heat transfer on superhydrophobic surfaces  

E-Print Network [OSTI]

Condensation is a phase change phenomenon often encountered in nature, as well as used in industry for applications including power generation, thermal management, desalination, and environmental control. For the past eight ...

Miljkovic, Nenad

176

Particle mixing, flavor condensate and dark energy  

E-Print Network [OSTI]

The mixing of neutrinos and quarks generate a vacuum condensate that, at the present epoch, behaves as a cosmological constant. The value of the dark energy is constrained today by the very small breaking of the Lorentz invariance.

Massimo Blasone; Antonio Capolupo; Giuseppe Vitiello

2009-12-08T23:59:59.000Z

177

Photovoltaic module and interlocked stack of photovoltaic modules  

SciTech Connect (OSTI)

One embodiment relates to an arrangement of photovoltaic modules configured for transportation. The arrangement includes a plurality of photovoltaic modules, each photovoltaic module including a frame having at least a top member and a bottom member. A plurality of alignment features are included on the top member of each frame, and a plurality of alignment features are included on the bottom member of each frame. Adjacent photovoltaic modules are interlocked by the alignment features on the top member of a lower module fitting together with the alignment features on the bottom member of an upper module. Other embodiments, features and aspects are also disclosed.

Wares, Brian S.

2012-09-04T23:59:59.000Z

178

Working with the National Center of Photovoltaics (NCPV) (Revised) (Fact Sheet)  

SciTech Connect (OSTI)

Capabilities fact sheet for the National Center for Photovoltaics: Working with the National Center for Photovoltaics. One-sided sheet that includes projects in various areas: Technology Pathway Partnerships, CRADAs, Incubator Program, Pre-Incubator Program, Universities, Next-Generation Program, and NREL T&E.

Not Available

2011-06-01T23:59:59.000Z

179

Low-Cost Installation of Concentrating Photovoltaic  

E-Print Network [OSTI]

Low-Cost Installation of Concentrating Photovoltaic Renewable Energy Research Renewable Energy inhibit the potential growth of the California photovoltaic market: high installation costs, expenses improvements have been made in recent years on the assembly and deployment of flatplate photovoltaic

180

Photon management in thermal and solar photovoltaics  

E-Print Network [OSTI]

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 ...

Hu, Lu

2008-01-01T23:59:59.000Z

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


181

Scattering Properties of nanostructures : applications to photovoltaics  

E-Print Network [OSTI]

Arya, D. Carlson, Prog. Photovoltaics 10, p. 69 (2002). K.and J. Bailat, Prog. in Photovoltaics 12 , 113 (2004). M.and A. Mart?, Progress in Photovoltaics 9, p. 73 (2001). S.

Derkacs, Daniel

2009-01-01T23:59:59.000Z

182

Department of Energy: Photovoltaics program - FY 1996  

SciTech Connect (OSTI)

The National Photovoltaic Program supports efforts to make PV an important part of the US economy through three main program elements: Research and Development, Technology Development, and Systems Engineering and Applications. (1) Research and Development activities generate new ideas, test the latest scientific theories, and push the limits of PV efficiencies in laboratory and prototype materials and devices. (2) Technology Development activities apply laboratory innovations to products to improve PV technology and the manufacturing techniques used to produce PV systems for the market. (3) Systems Engineering and Applications activities help improve PV systems and validate these improvements through tests, measurements, and deployment of prototypes. In addition, applications research validates, sales, maintenance, and financing mechanisms worldwide. (4) Environmental, Health, Safety and Resource Characterization activities help to define environmental, health and safety issues for those facilities engaged in the manufacture of PV products and organizations engaged in PV research and development. All PV Program activities are planned and executed in close collaboration and partnership with the U.S. PV industry. The overall PV Program is planned to be a balanced effort of research, manufacturing development, and market development. Critical to the success of this strategy is the National Photovoltaic Program`s effort to reduce the cost of electricity generated by photovoltaic. The program is doing this in three primary ways: by making devices more efficient, by making PV systems less expensive, and by validating the technology through measurements, tests, and prototypes.

NONE

1996-12-31T23:59:59.000Z

183

Portable thermo-photovoltaic power source  

DOE Patents [OSTI]

A miniature thermo-photovoltaic (TPV) device for generation of electrical power for use in portable electronic devices. A TPV power source is constructed to provide a heat source chemical reactor capable of using various fuels, such as liquid hydrocarbons, including but not limited to propane, LPG, butane, alcohols, oils and diesel fuels to generate a source of photons. A reflector dish guides misdirected photon energy from the photon source toward a photovoltaic array. A thin transparent protector sheet is disposed between the photon source and the array to reflect back thermal energy that cannot be converted to electricity, and protect the array from thermal damage. A microlens disposed between the protector sheet and the array further focuses the tailored band of photon energy from the photon source onto an array of photovoltaic cells, whereby the photon energy is converted to electrical power. A heat recuperator removes thermal energy from reactor chamber exhaust gases, preferably using mini- or micro-bellows to force air and fuel past the exhaust gases, and uses the energy to preheat the fuel and oxidant before it reaches the reactor, increasing system efficiency. Mini- or micro-bellows force ambient air through the system both to supply oxidant and to provide cooling. Finally, an insulator, which is preferably a super insulator, is disposed around the TPV power source to reduce fuel consumption, and to keep the TPV power source cool to the touch so it can be used in hand-held devices.

Zuppero, Anthony C. (Idaho Falls, ID); Krawetz, Barton (Idaho Falls, ID); Barklund, C. Rodger (Idaho Falls, ID); Seifert, Gary D. (Idaho Falls, ID)

1997-01-14T23:59:59.000Z

184

Planar photovoltaic solar concentrator module  

DOE Patents [OSTI]

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.

Chiang, C.J.

1992-12-01T23:59:59.000Z

185

Planar photovoltaic solar concentrator module  

DOE Patents [OSTI]

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.

Chiang, Clement J. (New Brunswick, NJ)

1992-01-01T23:59:59.000Z

186

Temperature compensated photovoltaic array  

DOE Patents [OSTI]

A temperature compensated photovoltaic module comprises a series of solar cells having a thermally activated switch connected in parallel with several of the cells. The photovoltaic module is adapted to charge conventional batteries having a temperature coefficient differing from the temperature coefficient of the module. The calibration temperatures of the switches are chosen whereby the colder the ambient temperature for the module, the more switches that are on and form a closed circuit to short the associated solar cells. By shorting some of the solar cells as the ambient temperature decreases, the battery being charged by the module is not excessively overcharged at lower temperatures. PV module is an integrated solution that is reliable and inexpensive. 2 figs.

Mosher, D.M.

1997-11-18T23:59:59.000Z

187

Temperature compensated photovoltaic array  

DOE Patents [OSTI]

A temperature compensated photovoltaic module (20) comprised of a series of solar cells (22) having a thermally activated switch (24) connected in parallel with several of the cells (22). The photovoltaic module (20) is adapted to charge conventional batteries having a temperature coefficient (TC) differing from the temperature coefficient (TC) of the module (20). The calibration temperatures of the switches (24) are chosen whereby the colder the ambient temperature for the module (20), the more switches that are on and form a closed circuit to short the associated solar cells (22). By shorting some of the solar cells (22) as the ambient temperature decreases, the battery being charged by the module (20) is not excessively overcharged at lower temperatures. PV module (20) is an integrated solution that is reliable and inexpensive.

Mosher, Dan Michael (Plano, TX)

1997-11-18T23:59:59.000Z

188

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.

189

Solar photovoltaics for development applications  

SciTech Connect (OSTI)

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.

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

190

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.

191

EROI of crystalline silicon photovoltaics.  

E-Print Network [OSTI]

?? Installed photovoltaic nameplate power have been growing rapidly around the worldin the last few years. But how much energy is returned to society (i.e. (more)

Lundin, Johan

2013-01-01T23:59:59.000Z

192

Photovoltaic-thermal collectors  

DOE Patents [OSTI]

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.

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

1984-04-24T23:59:59.000Z

193

Frequencies Studies Applied to Photovoltaic Modules.  

E-Print Network [OSTI]

?? This master thesis proposes to study applications of frequencies studies to the case of photovoltaic modules and photovoltaic plants. Such studies are little used (more)

Miquel, Clment

2011-01-01T23:59:59.000Z

194

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...

195

Organic Photovoltaics Experiments Showcase 'Superfacility' Research  

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

Organic Photovoltaics Experiments Showcase 'Superfacility' Concept Organic Photovoltaics Experiments Showcase 'Superfacility' Concept Collaboration Key to Enabling On-The-Fly HPC...

196

Amorphous Silicon-Carbon Nanostructure Photovoltaic Devices  

E-Print Network [OSTI]

reductions in costs for installed photovoltaic systems. Thisreductions in costs for installed photovoltaic systems. Thisphotovoltaic technologies that improve upon current solutions by being lower cost,

Schriver, Maria Christine

2012-01-01T23:59:59.000Z

197

This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. IEEE JOURNAL OF PHOTOVOLTAICS 1  

E-Print Network [OSTI]

as presented, with the exception of pagination. IEEE JOURNAL OF PHOTOVOLTAICS 1 Wafer-Scale Growth of Silicon Microwire Arrays for Photovoltaics and Solar Fuel Generation Adele C. Tamboli, Member, IEEE, Christopher T-efficiency photovoltaics and pho- toelectrochemical fuel generation. A remaining challenge to mak- ing this technology

Atwater, Harry

198

Increased Availability From Improved Condenser Design  

SciTech Connect (OSTI)

Performance parameters and flow characteristics on the shell side of surface condensers are becoming better understood. Contributing to this knowledge base is the recent ability to measure the physical properties as well as the quantity of gases being removed from the condenser by air removal equipment. Reviewed here are the commonality of these data from many operating condensers obtained over the past six years and other known condenser measurements, theory and laboratory experiments. These are combined to formulate global theoretical description of condenser dynamics describing the mechanism responsible for aeration and de-aeration, excess back pressure buildup due to air ingress or generation of other noncondensable gases, and the dissolubility of corrosive gases in condensate. The theoretical description supports a dynamic model useful for deciding condenser configuration design and design improvements. Features of design found in many operating condensers that promote aeration and resulting corrosion are presented. The benefits of the model and engineering design modifications to plant life cycle management, improved condenser performance, outage reduction and reliability improvements, lost load recovery and fuel savings are discussed. (author)

Harpster, Joseph W. [Intek, Inc., 751 Intek Way, Westerville, OH 43082 (United States)

2002-07-01T23:59:59.000Z

199

Graphite-based photovoltaic cells  

DOE Patents [OSTI]

The present invention uses lithographically patterned graphite stacks as the basic building elements of an efficient and economical photovoltaic cell. The basic design of the graphite-based photovoltaic cells includes a plurality of spatially separated graphite stacks, each comprising a plurality of vertically stacked, semiconducting graphene sheets (carbon nanoribbons) bridging electrically conductive contacts.

Lagally, Max (Madison, WI); Liu, Feng (Salt Lake City, UT)

2010-12-28T23:59:59.000Z

200

Metallic nanostructures for optoelectronic and photovoltaic applications  

E-Print Network [OSTI]

photovoltaics deployment, such technologies will reach their fundamental limitation in terms of efficiency,

Lim, Swee Hoe

2009-01-01T23:59:59.000Z

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


201

Thin film photovoltaic device  

DOE Patents [OSTI]

A thin film photovoltaic solar cell which utilizes a zinc phosphide semiconductor is of the homojunction type comprising an n-type conductivity region forming an electrical junction with a p-type region, both regions consisting essentially of the same semiconductor material. The n-type region is formed by treating zinc phosphide with an extrinsic dopant such as magnesium. The semiconductor is formed on a multilayer substrate which acts as an opaque contact. Various transparent contacts may be used, including a thin metal film of the same chemical composition as the n-type dopant or conductive oxides or metal grids. 5 figs.

Catalano, A.W.; Bhushan, M.

1982-08-03T23:59:59.000Z

202

Thin film photovoltaic device  

DOE Patents [OSTI]

A thin film photovoltaic solar cell which utilizes a zinc phosphide semiconductor is of the homojunction type comprising an n-type conductivity region forming an electrical junction with a p-type region, both regions consisting essentially of the same semiconductor material. The n-type region is formed by treating zinc phosphide with an extrinsic dopant such as magnesium. The semiconductor is formed on a multilayer substrate which acts as an opaque contact. Various transparent contacts may be used, including a thin metal film of the same chemical composition as the n-type dopant or conductive oxides or metal grids.

Catalano, Anthony W. (Wilmington, DE); Bhushan, Manjul (Wilmington, DE)

1982-01-01T23:59:59.000Z

203

Bracket for photovoltaic modules  

DOE Patents [OSTI]

Brackets for photovoltaic ("PV") modules are described. In one embodiment, a saddle bracket has a mounting surface to support one or more PV modules over a tube, a gusset coupled to the mounting surface, and a mounting feature coupled to the gusset to couple to the tube. The gusset can have a first leg and a second leg extending at an angle relative to the mounting surface. Saddle brackets can be coupled to a torque tube at predetermined locations. PV modules can be coupled to the saddle brackets. The mounting feature can be coupled to the first gusset and configured to stand the one or more PV modules off the tube.

Ciasulli, John; Jones, Jason

2014-06-24T23:59:59.000Z

204

Photovoltaic panel clamp  

DOE Patents [OSTI]

A photovoltaic panel clamp includes an upper and lower section. The interface between the assembled clamp halves and the module edge is filled by a flexible gasket material, such as EPDM rubber. The gasket preferably has small, finger like protrusions that allow for easy insertion onto the module edge while being reversed makes it more difficult to remove them from the module once installed. The clamp includes mounting posts or an integral axle to engage a bracket. The clamp also may include a locking tongue to secure the clamp to a bracket.

Mittan, Margaret Birmingham (Oakland, CA); Miros, Robert H. J. (Fairfax, CA); Brown, Malcolm P. (San Francisco, CA); Stancel, Robert (Loss Altos Hills, CA)

2012-06-05T23:59:59.000Z

205

Photovoltaic panel clamp  

DOE Patents [OSTI]

A photovoltaic panel clamp includes an upper and lower section. The interface between the assembled clamp halves and the module edge is filled by a flexible gasket material, such as EPDM rubber. The gasket preferably has small, finger like protrusions that allow for easy insertion onto the module edge while being reversed makes it more difficult to remove them from the module once installed. The clamp includes mounting posts or an integral axle to engage a bracket. The clamp also may include a locking tongue to secure the clamp to a bracket.

Brown, Malcolm P.; Mittan, Margaret Birmingham; Miros, Robert H. J.; Stancel, Robert

2013-03-19T23:59:59.000Z

206

Photovoltaic system reliability  

SciTech Connect (OSTI)

This paper discusses the reliability of several photovoltaic projects including SMUD`s PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect and analyze PV system reliability data.

Maish, A.B.; Atcitty, C. [Sandia National Labs., NM (United States); Greenberg, D. [Ascension Technology, Inc., Lincoln Center, MA (United States)] [and others

1997-10-01T23:59:59.000Z

207

Photovoltaic Degradation Risk: Preprint  

SciTech Connect (OSTI)

The ability to accurately predict power delivery over the course of time is of vital importance to the growth of the photovoltaic (PV) industry. Important cost drivers include the efficiency with which sunlight is converted into power, how this relationship changes over time, and the uncertainty in this prediction. An accurate quantification of power decline over time, also known as degradation rate, is essential to all stakeholders - utility companies, integrators, investors, and researchers alike. In this paper we use a statistical approach based on historical data to quantify degradation rates, discern trends and quantify risks related to measurement uncertainties, number of measurements and methodologies.

Jordan, D. C.; Kurtz, S. R.

2012-04-01T23:59:59.000Z

208

Photovoltaics in the Classroom  

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 the1 - September 2006Photovoltaic Theory and Modeling Los Alamos National Laboratory

209

Sandia National Laboratories: Photovoltaics  

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 the1 -theErik SpoerkeSolar Regional Test Center in VermontContactPhotovoltaics PV

210

Sandia National Laboratories: Photovoltaics  

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 the1 -theErik SpoerkeSolar Regional Test Center in VermontContactPhotovoltaics PVTutorial

211

Sandia National Laboratories: Photovoltaics  

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 the1 -theErik SpoerkeSolar Regional Test Center in VermontContactPhotovoltaics

212

Sandia National Laboratories: Photovoltaics  

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 the1 -theErik SpoerkeSolar Regional Test Center in VermontContactPhotovoltaicsUtility

213

Sandia National Laboratories: photovoltaic  

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 ConchasPassiveSubmitted for USMaterialsthe GoalMicrosystems Enabled Photovoltaics (MEPV)

214

Sandia National Laboratories: photovoltaic  

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 ConchasPassiveSubmitted for USMaterialsthe GoalMicrosystems Enabled Photovoltaics

215

Sandia National Laboratories: photovoltaic  

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 ConchasPassiveSubmitted for USMaterialsthe GoalMicrosystems Enabled Photovoltaics2013 PV

216

Sandia National Laboratories: photovoltaic  

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 ConchasPassiveSubmitted for USMaterialsthe GoalMicrosystems Enabled Photovoltaics2013

217

Condensation Particle Counter  

E-Print Network [OSTI]

Model 3007 Condensation Particle Counter Operation and Service Manual 1930035, Revision C August 2002 P a r t i c l e I n s t r u m e n t s #12;#12;Model 3007 Condensation Particle Counter Operation............................................................................V 1. UNPACKING AND PARTS IDENTIFICATION..................................1 Unpacking the Condensation

Weber, Rodney

218

in Condensed Matter Physics  

E-Print Network [OSTI]

Master in Condensed Matter Physics ­ Master académique #12;2 #12;3 Students at the University. Condensed matter physics is about explaining and predicting the relationship between the atomic, and broad education in the field of condensed matter physics · introduce you to current research topics

van der Torre, Leon

219

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

SciTech Connect (OSTI)

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)

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

2010-09-15T23:59:59.000Z

220

Next Generation Photovoltaics 3 | Department of Energy  

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

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

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


221

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

E-Print Network [OSTI]

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 ...

Carpenter, Paul R.

1978-01-01T23:59:59.000Z

222

Photovoltaic power plant as FACTS devices in multi-feeder systems  

E-Print Network [OSTI]

This paper illustrates possible configurations for a large-scale photovoltaic power plant (PV), to operate as a FACTS (flexible AC transmission system) device in addition to operating as a source of renewable power generation. ...

Moawwad, Ahmed

223

Where solar thermal meets photovoltaic for high-efficiency power conversion  

E-Print Network [OSTI]

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 ...

Bierman, David M. (David Matthew)

2014-01-01T23:59:59.000Z

224

Photochromic, electrochromic, photoelectrochromic and photovoltaic devices  

DOE Patents [OSTI]

A light activated photoelectrochromic device is formed of a two-component system formed of a photoactive charge carrier generating material and electrochromic material (plus an elecrolyte). Light interacts with a semiconductive material to generate hole-electron charge carriers which cause a redox reaction in the electrochromic material. One device is formed of hydrated nickel oxide as the electrochromic layer and polycrystalline titanium dioxide as the charge generating material. The materials may be formed as discrete layers or mixed together. Because of the direct charge transfer between the layers, a circuit to apply a voltage to drive the electrochromic reaction is not required, although one can be used to enhance the reaction. The hydrated nickel oxide-titanium dioxide materials can also be used to form a photovoltaic device for generating electricity.

Kostecki, Robert (Lafayette, CA); McLarnon, Frank R. (Orinda, CA)

2000-01-01T23:59:59.000Z

225

Photovoltaic Product Directory and Buyers Guide  

SciTech Connect (OSTI)

The directory guide explains photovoltaic systems briefly and shows what products are available off-the-shelf. Information is given to assist in designing a photovoltaic system and on financial incentives. Help is given for determining if photovoltaic products can meet a particular buyer's needs, and information is provided on actual photovoltaic user's experiences. Detailed information is appended on various financial incentives available from state and federal governments, sources of additional information on photovoltaics, sources of various photovoltaic products, and a listing of addresses of photovoltaic products suppliers. (LEW)

Watts, R.L.; Smith, S.A.; Dirks, J.A.; Mazzucchi, R.P.; Lee, V.E.

1984-04-01T23:59:59.000Z

226

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

227

Financing Non-Residential Photovoltaic Projects: Options and Implications  

E-Print Network [OSTI]

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

Bolinger, Mark

2009-01-01T23:59:59.000Z

228

Soiling losses for solar photovoltaic systems in California  

E-Print Network [OSTI]

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

Mejia, Felipe A; Kleissl, Jan

2013-01-01T23:59:59.000Z

229

Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies  

E-Print Network [OSTI]

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

Wang, Chunhua

2011-01-01T23:59:59.000Z

230

Statistical Methods for Enhanced Metrology in Semiconductor/Photovoltaic Manufacturing  

E-Print Network [OSTI]

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

Zeng, Dekong

2012-01-01T23:59:59.000Z

231

Charge transport in hybrid nanorod-polymer composite photovoltaic cells  

E-Print Network [OSTI]

circuit diagram for a photovoltaic cell under illumination.Polymer Composite Photovoltaic Cells Wendy U. Huynh ,devices such as photovoltaic cells and light-emitting-

Huynh, Wendy U.; Dittmer, Janke J.; Teclemariam, Nerayo; Milliron, Delia; Alivisatos, A. Paul; Barnham, Keith W.J.

2002-01-01T23:59:59.000Z

232

Structure-Function Relationships in Semiconducting Polymers for Organic Photovoltaics  

E-Print Network [OSTI]

Photovoltaic Cell .the materials, all photovoltaic cells operate on the basicEquation 1.2) For photovoltaic cells of all kinds and from

Kavulak, David Fredric Joel

2010-01-01T23:59:59.000Z

233

Statistical Methods for Enhanced Metrology in Semiconductor/Photovoltaic Manufacturing  

E-Print Network [OSTI]

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

Zeng, Dekong

2012-01-01T23:59:59.000Z

234

Fabrication and Characterization of Organic/Inorganic Photovoltaic Devices  

E-Print Network [OSTI]

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

Guvenc, Ali Bilge

2012-01-01T23:59:59.000Z

235

The Market Value and Cost of Solar Photovoltaic Electricity Production  

E-Print Network [OSTI]

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

Borenstein, Severin

2008-01-01T23:59:59.000Z

236

Tariffs Can Be Structured to Encourage Photovoltaic Energy  

E-Print Network [OSTI]

Be Structured to Encourage Photovoltaic Energy Ryan Wiser,of customer-sited photovoltaic (PV) systems. Though theseEconomics of Commercial Photovoltaic Systems in California,

Wiser, Ryan

2009-01-01T23:59:59.000Z

237

Fabrication and Characterization of Organic/Inorganic Photovoltaic Devices  

E-Print Network [OSTI]

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

Guvenc, Ali Bilge

2012-01-01T23:59:59.000Z

238

Effects of solar photovoltaic panels on roof heat transfer  

E-Print Network [OSTI]

theenergyperformanceof photovoltaicroofs,ASHRAETransAthermalmodelforphotovoltaicsystems,SolarEnergy,EffectsofSolarPhotovoltaicPanelsonRoofHeatTransfer

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

2011-01-01T23:59:59.000Z

239

Learning by doing: The evolution of state support for photovoltaics  

E-Print Network [OSTI]

of State Support for Photovoltaics Mark Bolinger and Ryantarget the installation of photovoltaics (PV) in one way orwidespread popularity of photovoltaics (PV), along with its

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

240

Optically Functional Nanomaterials: Optothermally Responsive Composites and Carbon Nanotube Photovoltaics  

E-Print Network [OSTI]

and Carbon Nanotube Photovoltaics by David Christopher OkawaPart II: Carbon Nanotube Photovoltaics Chapter 6:Carbon Nanotube Polymer Photovoltaics 6.1 Polymer-Nanotube

Okawa, David

2010-01-01T23:59:59.000Z

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


241

Temperature-Dependent Electron Transport in Quantum Dot Photovoltaics  

E-Print Network [OSTI]

4.4 Photovoltaics in Practice . . . . . . . . . . . . . .milestones. Quantum dot photovoltaics is in the bottom-rightIN QUANTUM DOT PHOTOVOLTAICS A dissertation submitted in

Padilla, Derek

2013-01-01T23:59:59.000Z

242

Structure-Function Relationships in Semiconducting Polymers for Organic Photovoltaics  

E-Print Network [OSTI]

properties for organic photovoltaics (OPVs). Space-chargePolymers for Organic Photovoltaics By David Fredric JoelPolymers for Organic Photovoltaics by David Fredric Joel

Kavulak, David Fredric Joel

2010-01-01T23:59:59.000Z

243

Comment on "coherence and uncertainty in nanostructured organic photovoltaics"  

E-Print Network [OSTI]

provide new probes for photovoltaics. The develop- ment ofin Nanostructured Organic Photovoltaics. J. Phys. Chem. Lettin Nanostructured Organic Photovoltaics Shaul Mukamel

Mukamel, S

2013-01-01T23:59:59.000Z

244

The Market Value and Cost of Solar Photovoltaic Electricity Production  

E-Print Network [OSTI]

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

Borenstein, Severin

2008-01-01T23:59:59.000Z

245

Analysis of batteries for use in photovoltaic systems. Final report  

SciTech Connect (OSTI)

An evaluation of 11 types of secondary batteries for energy storage in photovoltaic electric power systems is given. The evaluation was based on six specific application scenarios which were selected to represent the diverse requirements of various photovoltaic systems. Electrical load characteristics and solar insulation data were first obtained for each application scenario. A computer-based simulation program, SOLSIM, was then developed to determine optimal sizes for battery, solar array, and power conditioning systems. Projected service lives and battery costs were used to estimate life-cycle costs for each candidate battery type. The evaluation considered battery life-cycle cost, safety and health effects associated with battery operation, and reliability/maintainability. The 11 battery types were: lead-acid, nickel-zinc, nickel-iron, nickel-hydrogen, lithium-iron sulfide, calcium-iron sulfide, sodium-sulfur, zinc-chlorine, zinc-bromine, Redox, and zinc-ferricyanide. The six application scenarios were: (1) a single-family house in Denver, Colorado (photovoltaic system connected to the utility line); (2) a remote village in equatorial Africa (stand-alone power system); (3) a dairy farm in Howard County, Maryland (onsite generator for backup power); (4) a 50,000 square foot office building in Washington, DC (onsite generator backup); (5) a community in central Arizona with a population of 10,000 (battery to be used for dedicated energy storage for a utility grid-connected photovoltaic power plant); and (6) a military field telephone office with a constant 300 W load (trailer-mounted auxiliary generator backup). Recommendations for a research and development program on battery energy storage for photovoltaic applications are given, and a discussion of electrical interfacing problems for utility line-connected photovoltaic power systems is included. (WHK)

Podder, A; Kapner, M

1981-02-01T23:59:59.000Z

246

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

247

Production Cost Modeling for High Levels of Photovoltaics Penetration  

SciTech Connect (OSTI)

The goal of this report is to evaluate the likely avoided generation, fuels, and emissions resulting from photovoltaics (PV) deployment in several U.S. locations and identify new tools, methods, and analysis to improve understanding of PV impacts at the grid level.

Denholm, P.; Margolis, R.; Milford, J.

2008-02-01T23:59:59.000Z

248

Dispelling the misconception of low-EROI photovoltaics  

E-Print Network [OSTI]

Center for Life Cycle Analysis Columbia University, New York (USA) 3 Photovoltaic Environmental Research Center BNL, New York (USA) #12;M. Raugei, V. Fthenakis, P. Fullana - AES 2010 2 Titulo de la diapositiva electricity generated [MJ] Cumulative primary energy required [MJ] Source: Earth. Cleveland C.J. (Ed

249

Photovoltaics information user study  

SciTech Connect (OSTI)

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.

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

1980-10-01T23:59:59.000Z

250

Laminated photovoltaic modules using back-contact solar cells  

DOE Patents [OSTI]

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.

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

251

Proceedings: 2003 EPRI Workshop on Condensate Polishing  

SciTech Connect (OSTI)

Successful condensate polishing operations maintain control of ionic and particulate impurity transport to the pressurized water reactor (PWR) steam generator and the boiling water reactor (BWR) reactor and recirculation system, thus allowing the units to operate more reliably. This report contains the work presented at EPRI's 2003 Workshop on Condensate Polishing, where 30 papers were presented on current issues, research, and utility experiences involving polishing issues at both PWR and BWR units.

None

2004-02-01T23:59:59.000Z

252

Photovoltaic module with adhesion promoter  

DOE Patents [OSTI]

Photovoltaic modules with adhesion promoters and methods for fabricating photovoltaic modules with adhesion promoters are described. A photovoltaic module includes a solar cell including a first surface and a second surface, the second surface including a plurality of interspaced back-side contacts. A first glass layer is coupled to the first surface by a first encapsulating layer. A second glass layer is coupled to the second surface by a second encapsulating layer. At least a portion of the second encapsulating layer is bonded directly to the plurality of interspaced back-side contacts by an adhesion promoter.

2013-10-08T23:59:59.000Z

253

Apparatus for making photovoltaic devices  

DOE Patents [OSTI]

A process and apparatus (70) for making a large area photovoltaic device (22) that is capable of generating low cost electrical power. The apparatus (70) for performing the process includes an enclosure (126) providing a controlled environment in which an oven (156) is located. At least one and preferably a plurality of deposition stations (74,76,78) provide heated vapors of semiconductor material within the oven (156) for continuous elevated temperature deposition of semiconductor material on a sheet substrate (24) including a glass sheet (26) conveyed within the oven. The sheet substrate (24) is conveyed on a roller conveyor (184) within the oven (156) and the semiconductor material whose main layer (82) is cadmium telluride is deposited on an upwardly facing surface (28) of the substrate by each deposition station from a location within the oven above the roller conveyor. A cooling station (86) rapidly cools the substrate (24) after deposition of the semiconductor material thereon to strengthen the glass sheet of the substrate.

Foote, James B. (Toledo, OH); Kaake, Steven A. F. (Perrysburg, OH); Meyers, Peter V. (Bowling Green, OH); Nolan, James F. (Sylvania, OH)

1994-12-13T23:59:59.000Z

254

Multijunction Photovoltaic Technologies for High-Performance Concentrators: Preprint  

SciTech Connect (OSTI)

Multijunction solar cells provide high-performance technology pathways leading to potentially low-cost electricity generated from concentrated sunlight. The National Center for Photovoltaics at the National Renewable Energy Laboratory has funded different III-V multijunction solar cell technologies and various solar concentration approaches. Within this group of projects, III-V solar cell efficiencies of 41% are close at hand and will likely be reported in these conference proceedings. Companies with well-developed solar concentrator structures foresee installed system costs of $3/watt--half of today's costs--within the next 2 to 5 years as these high-efficiency photovoltaic technologies are incorporated into their concentrator photovoltaic systems. These technology improvements are timely as new large-scale multi-megawatt markets, appropriate for high performance PV concentrators, open around the world.

McConnell, R.; Symko-Davies, M.

2006-05-01T23:59:59.000Z

255

Methodology Guidelines on Life Cycle Assessment of Photovoltaic Electricity  

E-Print Network [OSTI]

1 Methodology Guidelines on Life Cycle Assessment of Photovoltaic Electricity of Photovoltaic Electricity #12;IEA-PVPS-TASK 12 Methodology Guidelines on Life Cycle Assessment of Photovoltaic Electricity INTERNATIONAL ENERGY AGENCY PHOTOVOLTAIC POWER SYSTEMS PROGRAMME Methodology

256

The Development of Semiconducting Materials for Organic Photovoltaics  

E-Print Network [OSTI]

photovoltaics (OPVs) has led to a significant increase in their power conversion efficiencies (Photovoltaics..1 Motivation and Current Technology1 Organic Photovoltaic Device Operation and Structure2 Characterization of Organic Photovoltaic Device Efficiency..

Douglas, Jessica D.

2013-01-01T23:59:59.000Z

257

Rooftop Photovoltaics Market Penetration Scenarios  

SciTech Connect (OSTI)

The goal of this study was to model the market penetration of rooftop photovoltaics (PV) in the United States under a variety of scenarios, on a state-by-state basis, from 2007 to 2015.

Paidipati, J.; Frantzis, L.; Sawyer, H.; Kurrasch, A.

2008-02-01T23:59:59.000Z

258

OTEC- Residential Photovoltaic Rebate Program  

Broader source: Energy.gov [DOE]

Customers of Oregon Trail Electric Consumers Cooperative (OTEC) who install photovoltaic systems are eligible for a rebate of $500 for the first kilowatt (kW) of installed capacity per year. ...

259

Reducing recombination in organic photovoltaics  

E-Print Network [OSTI]

In this thesis, I consider two methods to improve organic photovoltaic efficiency: energy level cascades and promotion of triplet state excitons. The former relies on a thin layer of material placed between the active ...

Sussman, Jason M. (Jason Michael)

2011-01-01T23:59:59.000Z

260

Salem Electric- Photovoltaic Rebate Program  

Broader source: Energy.gov [DOE]

Salem Electric offers a rebate to residential customers who install solar photovoltaic (PV) systems. Customers have the option of receiving a rebate or a [http://dsireusa.org/incentives/incentive...

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


261

Plug-and-Play Photovoltaics  

Broader source: Energy.gov [DOE]

On December 7, 2012,DOE announced $21 million in funding for the Plug-and-Play Photovoltaics funding opportunity. Part of the SunShot Systems Integration efforts, the following projects were...

262

Mandatory Photovoltaic System Cost Estimate  

Broader source: Energy.gov [DOE]

At the request of a customer or a potential customer, Colorado electric utilities are required to conduct a cost comparison of a photovoltaic (PV) system to any proposed distribution line extension...

263

Ameren Missouri- Photovoltaic Rebate Program  

Broader source: Energy.gov [DOE]

Ameren Missouri offers rebates to its customers for the installation of net metered photovoltaic (PV) systems on their properties. The rebate is set at $2.00 per DC watt with a maximum rebate of ...

264

Mandatory Photovoltaic System Cost Analysis  

Broader source: Energy.gov [DOE]

The Arizona Corporation Commission requires electric utilities to conduct a cost/benefit analysis to compare the cost of line extension with the cost of installing a stand-alone photovoltaic (PV)...

265

Photovoltaic module mounting system  

DOE Patents [OSTI]

A solar array mounting system having unique installation, load distribution, and grounding features, and which is adaptable for mounting solar panels having no external frame. The solar array mounting system includes flexible, pedestal-style feet and structural links connected in a grid formation on the mounting surface. The photovoltaic modules are secured in place via the use of attachment clamps that grip the edge of the typically glass substrate. The panel mounting clamps are then held in place by tilt brackets and/or mid-link brackets that provide fixation for the clamps and align the solar panels at a tilt to the horizontal mounting surface. The tilt brackets are held in place atop the flexible feet and connected link members thus creating a complete mounting structure.

Miros, Robert H. J.; Mittan, Margaret Birmingham; Seery, Martin N; Holland, Rodney H

2012-09-18T23:59:59.000Z

266

Photovoltaic module mounting system  

DOE Patents [OSTI]

A solar array mounting system having unique installation, load distribution, and grounding features, and which is adaptable for mounting solar panels having no external frame. The solar array mounting system includes flexible, pedestal-style feet and structural links connected in a grid formation on the mounting surface. The photovoltaic modules are secured in place via the use of attachment clamps that grip the edge of the typically glass substrate. The panel mounting clamps are then held in place by tilt brackets and/or mid-link brackets that provide fixation for the clamps and align the solar panels at a tilt to the horizontal mounting surface. The tilt brackets are held in place atop the flexible feet and connected link members thus creating a complete mounting structure.

Miros, Robert H. J. (Fairfax, CA); Mittan, Margaret Birmingham (Oakland, CA); Seery, Martin N. (San Rafael, CA); Holland, Rodney H. (Novato, CA)

2012-04-17T23:59:59.000Z

267

Photovoltaic cell assembly  

DOE Patents [OSTI]

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.

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

1990-01-01T23:59:59.000Z

268

Condensation of FtsZ filaments can drive bacterial cell division  

E-Print Network [OSTI]

Condensation of FtsZ filaments can drive bacterial cell division Ganhui Lana , Brian R. Danielsb-ring undergoes a condensation transition from a low- density state to a high-density state and generates the condensation transition, but does not directly generate forces. In vivo fluorescence measurements show that Fts

Sun, Sean

269

Quark Condensates: Flavour Dependence  

E-Print Network [OSTI]

We determine the q-bar q condensate for quark masses from zero up to that of the strange quark within a phenomenologically successful modelling of continuum QCD by solving the quark Schwinger-Dyson equation. The existence of multiple solutions to this equation is the key to an accurate and reliable extraction of this condensate using the operator product expansion. We explain why alternative definitions fail to give the physical condensate.

R. Williams; C. S. Fischer; M. R. Pennington

2007-03-23T23:59:59.000Z

270

Steam and Condensate Systems  

E-Print Network [OSTI]

efficiency and profit. Some important factors to consider in steam and condensate systems are: 1) Proper steam pressure 2) Adequate sized steam lines 3) Adequate sized condensate return lines 4) Utilization of flash steam 5) Properly sized... ! can cause system inefficiency. i Adequate sized steam lines assure the process will be furnished with sufficiertt i quantities of steam at the proper pressure. Adequate sized condensate return lines are essential to overall efficiency. lhese...

Yates, W.

1979-01-01T23:59:59.000Z

271

Of Matters Condensed  

E-Print Network [OSTI]

The American Physical Society (APS) March Meeting of condensed matter physics has grown to nearly 10,000 participants, comprises 23 individual APS groups, and even warrants its own hashtag (#apsmarch). Here we analyze the text and data from March Meeting abstracts of the past nine years and discuss trends in condensed matter physics over this time period. We find that in comparison to atomic, molecular, and optical physics, condensed matter changes rapidly, and that condensed matter appears to be moving increasingly toward subject matter that is traditionally in materials science and engineering.

Shulman, Michael

2015-01-01T23:59:59.000Z

272

Immersion Condensation on Oil-Infused Heterogeneous Surfaces for Enhanced Heat Transfer  

E-Print Network [OSTI]

Enhancing condensation heat transfer is important for broad applications from power generation to water harvesting systems. Significant efforts have focused on easy removal of the condensate, yet the other desired properties ...

Xiao, Rong

273

A Valuation-Based Framework for Considering Distributed Generation...  

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

Valuation-Based Framework for Considering Distributed Generation Photovoltaic Tariff Design Preprint Owen R. Zinaman National Renewable Energy Laboratory Nam R. Darghouth...

274

Condensation Energy of a Spacetime Condensate  

E-Print Network [OSTI]

Starting from an analogy between the Planck-Einstein scale and the dual length scales in Ginzburg-Landau theory of superconductivity, and assuming that space-time is a condensate of neutral fermionic particles with Planck mass, we derive the baryonic mass of the universe. In that theoretical framework baryonic matter appears to be associated with the condensation energy gained by spacetime in the transition from its normal (symetric) to its (less symetric) superconducting-like phase. It is shown however that the critical transition temperature cannot be the Planck temperature. Thus leaving open the enigma of the microscopic description of spacetime at quantum level.

Clovis Jacinto de Matos; Pavol Valko

2010-12-17T23:59:59.000Z

275

A prototype photovoltaic/thermal system integrated with transpired collector  

SciTech Connect (OSTI)

Building-integrated photovoltaic/thermal (BIPV/T) systems may be utilized to produce useful heat while simultaneously generating electricity from the same building envelope surface. A well known highly efficient collector is the open-loop unglazed transpired collector (UTC) which consists of dark porous cladding through which outdoor air is drawn and heated by absorbed solar radiation. Commercially available photovoltaic systems typically produce electricity with efficiencies up to about 18%. Thus, it is beneficial to obtain much of the normally wasted heat from the systems, possibly by combining UTC with photovoltaics. Combination of BIPV/T and UTC systems for building facades is considered in this paper - specifically, the design of a prototype facade-integrated photovoltaic/thermal system with transpired collector (BIPV/T). A full scale prototype is constructed with 70% of UTC area covered with PV modules specially designed to enhance heat recovery and compared to a UTC of the same area under outdoor sunny conditions with low wind. The orientation of the corrugations in the UTC is horizontal and the black-framed modules are attached so as to facilitate flow into the UTC plenum. While the overall combined thermal efficiency of the UTC is higher than that of the BIPV/T system, the value of the generated energy - assuming that electricity is at least four times more valuable than heat - is between 7% and 17% higher. Also, the electricity is always useful while the heat is usually utilized only in the heating season. The BIPV/T concept is applied to a full scale office building demonstration project in Montreal, Canada. The ratio of photovoltaic area coverage of the UTC may be selected based on the fresh air heating needs of the building, the value of the electricity generated and the available building surfaces. (author)

Athienitis, Andreas K.; Bambara, James; O'Neill, Brendan; Faille, Jonathan [Dept. of Building, Civil and Environmental Engineering, Concordia University, 1455 Maisonneuve W., Montreal, Quebec (Canada)

2011-01-15T23:59:59.000Z

276

Amorphous Silicon-Carbon Nanostructure Photovoltaic Devices  

E-Print Network [OSTI]

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. . . . . . . . . . . . . . . . . .

Schriver, Maria Christine

2012-01-01T23:59:59.000Z

277

ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS  

SciTech Connect (OSTI)

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.

DeScioli, Derek

2013-06-01T23:59:59.000Z

278

Photovoltaic product directory and buyers guide  

SciTech Connect (OSTI)

Basic information on photovoltaic conversion technology is provided for those unfamiliar with the field. Various types of photovoltaic products and systems currently available off-the-shelf are described. These include products without batteries, battery chargers, power packages, home electric systems, and partial systems. Procedures are given for designing a photovoltaic system from scratch. A few custom photovoltaic systems are described, and a list is compiled of photovoltaic firms which can provide custom systems. Guidance is offered for deciding whether or not to use photovoltaic products. A variety of installations are described and their performance is appraised by the owners. Information is given on various financial incentives available from state and federal governments. Sources of additional information on photovoltaics are listed. A matrix is provided indicating the sources of various types of photovoltaic products. The addresses of suppliers are listed. (LEW)

Watts, R.L.; Smith, S.A.; Mazzucchi, R.P.

1981-06-01T23:59:59.000Z

279

Photovoltaic Reliability and Engineering (Revised) (Fact Sheet)  

SciTech Connect (OSTI)

Capabilities fact sheet for the National Center for Photovoltaics: Photovoltaic Reliability and Engineering. One-sided sheet that includes Scope, Core Competencies and Capabilities, and Contact/Web information.

Not Available

2011-06-01T23:59:59.000Z

280

Mounting support for a photovoltaic module  

DOE Patents [OSTI]

A mounting support for a photovoltaic module is described. The mounting support includes a foundation having an integrated wire-way ledge portion. A photovoltaic module support mechanism is coupled with the foundation.

Brandt, Gregory Michael; Barsun, Stephan K.; Coleman, Nathaniel T.; Zhou, Yin

2013-03-26T23:59:59.000Z

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


281

Thin film photovoltaic panel and method  

DOE Patents [OSTI]

A thin film photovoltaic panel includes a backcap for protecting the active components of the photovoltaic cells from adverse environmental elements. A spacing between the backcap and a top electrode layer is preferably filled with a desiccant to further reduce water vapor contamination of the environment surrounding the photovoltaic cells. The contamination of the spacing between the backcap and the cells may be further reduced by passing a selected gas through the spacing subsequent to sealing the backcap to the base of the photovoltaic panels, and once purged this spacing may be filled with an inert gas. The techniques of the present invention are preferably applied to thin film photovoltaic panels each formed from a plurality of photovoltaic cells arranged on a vitreous substrate. The stability of photovoltaic conversion efficiency remains relatively high during the life of the photovoltaic panel, and the cost of manufacturing highly efficient panels with such improved stability is significantly reduced.

Ackerman, Bruce (El Paso, TX); Albright, Scot P. (El Paso, TX); Jordan, John F. (El Paso, TX)

1991-06-11T23:59:59.000Z

282

Sandia National Laboratories: Photovoltaic Systems Research ...  

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

845-9015 rdrobin@sandia.gov Publications available at: pvsac@sandia.gov Websites Photovoltaics energy.sandia.gov www.eere.energy.gov Tagged with: Energy * Photovoltaics * PV *...

283

Photovoltaic technology development at Sandia National Laboratories  

SciTech Connect (OSTI)

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.

NONE

1981-12-31T23:59:59.000Z

284

Electrohydrodynamically enhanced condensation heat transfer  

E-Print Network [OSTI]

In a condenser the thickness of the liquid condensate film covering the cooled surface constitutes a resistance to the heat transfer. By establishing a non uniform electric field in the vicinity of the condensation surface the extraction of liquid...

Wawzyniak, Markus

2012-06-07T23:59:59.000Z

285

Photovoltaic Incentive Design Handbook  

SciTech Connect (OSTI)

Investments in customer-owned grid-connected photovoltaic (PV) energy systems are growing at a steady pace. This is due, in part, to the availability of attractive economic incentives offered by public state agencies and utilities. In the United States, these incentives have largely been upfront lump payments tied to the system capacity rating. While capacity-based ''buydowns'' have stimulated the domestic PV market, they have been criticized for subsidizing systems with potentially poor energy performance. As a result, the industry has been forced to consider alternative incentive structures, particularly ones that pay based on long-term measured performance. The industry, however, lacks consensus in the debate over the tradeoffs between upfront incentive payments versus longer-term payments for energy delivery. This handbook is designed for agencies and utilities that offer or intend to offer incentive programs for customer-owned PV systems. Its purpose is to help select, design, and implement incentive programs that best meet programmatic goals. The handbook begins with a discussion of the various available incentive structures and then provides qualitative and quantitative tools necessary to design the most appropriate incentive structure. It concludes with program administration considerations.

Hoff, T. E.

2006-12-01T23:59:59.000Z

286

Process Development for Nanostructured Photovoltaics  

SciTech Connect (OSTI)

Photovoltaic manufacturing is an emerging industry that promises a carbon-free, nearly limitless source of energy for our nation. However, the high-temperature manufacturing processes used for conventional silicon-based photovoltaics are extremely energy-intensive and expensive. This high cost imposes a critical barrier to the widespread implementation of photovoltaic technology. Argonne National Laboratory and its partners recently invented new methods for manufacturing nanostructured photovoltaic devices that allow dramatic savings in materials, process energy, and cost. These methods are based on atomic layer deposition, a thin film synthesis technique that has been commercialized for the mass production of semiconductor microelectronics. The goal of this project was to develop these low-cost fabrication methods for the high efficiency production of nanostructured photovoltaics, and to demonstrate these methods in solar cell manufacturing. We achieved this goal in two ways: 1) we demonstrated the benefits of these coatings in the laboratory by scaling-up the fabrication of low-cost dye sensitized solar cells; 2) we used our coating technology to reduce the manufacturing cost of solar cells under development by our industrial partners.

Elam, Jeffrey W.

2015-01-01T23:59:59.000Z

287

International photovoltaic products and manufacturers directory, 1995  

SciTech Connect (OSTI)

This international directory of more than 500 photovoltaic-related manufacturers is intended to guide potential users of photovoltaics to sources for systems and their components. Two indexes help the user to locate firms and materials. A glossary describes equipment and terminology commonly used in the photovoltaic industry.

Shepperd, L.W. [ed.] [Florida Solar Energy Center, Cocoa, FL (United States)] [ed.; Florida Solar Energy Center, Cocoa, FL (United States)

1995-11-01T23:59:59.000Z

288

Discovery Park Impact Network for Photovoltaic Technology  

E-Print Network [OSTI]

Discovery Park Impact Network for Photovoltaic Technology NEED Discovery Park provides for Photovoltaic Technology (NPT). The NPT is designed to be a unique venue for industry-directed, university aims to become an international center of gravity for photovoltaic research that connects islands

Holland, Jeffrey

289

Photovoltaic retinal prosthesis with high pixel density  

E-Print Network [OSTI]

Photovoltaic retinal prosthesis with high pixel density Keith Mathieson1,4 , James Loudin1 to stimulating electrodes via intraocular cables. We present a photovoltaic subretinal prosthesis, in which pixel, demonstrating the possibility of a fully integrated photovoltaic retinal prosthesis with high

Palanker, Daniel

290

Low band gap polymers Organic Photovoltaics  

E-Print Network [OSTI]

Low band gap polymers for Organic Photovoltaics Eva Bundgaard Ph.D. Dissertation Ris National Bundgaard Title: Low band gap polymers for Organic photovoltaics Department: The polymer department Report the area of organic photovoltaics are focusing on low band gap polymers, a type of polymer which absorbs

291

Photovoltaics for the Terawatt Christiana Honsberg  

E-Print Network [OSTI]

1 Photovoltaics for the Terawatt Challenge Christiana Honsberg Department of Electrical Computer;Photovoltaic Milestones Germany, Spain, Italy have yearly installed PV capacity > yearly increase Workshop 02/28/14 C. Honsberg 5 5 #12;Learning Curves for Photovoltaics UD Energy Institute Solar Workshop

Firestone, Jeremy

292

EELE408 Photovoltaics Lecture 01: Intro & Safety  

E-Print Network [OSTI]

1 EELE408 Photovoltaics Lecture 01: Intro & Safety Dr. Todd J. Kaiser tjkaiser@ece.montana.edu Department of Electrical and Computer Engineering Montana State University - Bozeman EELE408 Photovoltaics & Ventre: Photovoltaic Systems Engineering , 3E Resources: Green: Solar Cells: Operating Principles

Kaiser, Todd J.

293

Photovoltaic olar nergy Development on Landfills  

E-Print Network [OSTI]

Photovoltaic olar nergy Development on Landfills ENVIRONMENTAL AREA RESEARCH PIER Environmental of a selfballasting photovoltaic solar racking system will affect a closed landfills dirt cap. The effects experiment wherein single racks with photovoltaic modules will be placed on a landfill cap

294

Rational Design of Zinc Phosphide Heterojunction Photovoltaics  

E-Print Network [OSTI]

Rational Design of Zinc Phosphide Heterojunction Photovoltaics Thesis by Jeffrey Paul Bosco would meet me with the same energy and enthusiasm regarding the topic of zinc phosphide photovoltaics to the field of earth-abundant photovoltaics has been indispensable to my work. Greg also made a great mentor

Winfree, Erik

295

INTERNATIONAL ENERGY AGENCY PHOTOVOLTAIC POWER SYSTEMS PROGRAMME  

E-Print Network [OSTI]

is to improve the operation and sizing, the electrical and economic output of photovoltaic power systems#12;INTERNATIONAL ENERGY AGENCY PHOTOVOLTAIC POWER SYSTEMS PROGRAMME TASK 2 ­ Performance, Reliability and Analysis of Photovoltaic Systems THE AVAILABILITY OF IRRADIATION DATA Report IEA-PVPS T2

296

Vacuum condensates, flavor mixing and spontaneous supersymmetry breaking  

E-Print Network [OSTI]

Spontaneous supersymmetry (SUSY) breaking is revealed in all phenomena in which vacuum condensates are physically relevant. The dynamical breakdown of SUSY is generated by the condensates themselves, which lift the zero point energy. Evidence is presented in the case of the Wess-Zuimino model, and the flavor mixing case is treated in detail.

Antonio Capolupo; Marco Di Mauro

2013-01-05T23:59:59.000Z

297

Recycling Of Cis Photovoltaic Waste  

DOE Patents [OSTI]

A method for extracting and reclaiming metals from scrap CIS photovoltaic cells and associated photovoltaic manufacturing waste by leaching the waste with dilute nitric acid, skimming any plastic material from the top of the leaching solution, separating glass substrate from the leachate, electrolyzing the leachate to plate a copper and selenium metal mixture onto a first cathode, replacing the cathode with a second cathode, re-electrolyzing the leachate to plate cadmium onto the second cathode, separating the copper from selenium, and evaporating the depleted leachate to yield a zinc and indium containing solid.

Drinkard, Jr., William F. (Charlotte, NC); Long, Mark O. (Charlotte, NC); Goozner; Robert E. (Charlotte, NC)

1998-07-14T23:59:59.000Z

298

Electrolyte vapor condenser  

DOE Patents [OSTI]

A system is disclosed for removing electrolyte from a fuel cell gas stream. The gas stream containing electrolyte vapor is supercooled utilizing conventional heat exchangers and the thus supercooled gas stream is passed over high surface area passive condensers. The condensed electrolyte is then drained from the condenser and the remainder of the gas stream passed on. The system is particularly useful for electrolytes such as phosphoric acid and molten carbonate, but can be used for other electrolyte cells and simple vapor separation as well. 3 figs.

Sederquist, R.A.; Szydlowski, D.F.; Sawyer, R.D.

1983-02-08T23:59:59.000Z

299

Electrolyte vapor condenser  

DOE Patents [OSTI]

A system is disclosed for removing electrolyte from a fuel cell gas stream. The gas stream containing electrolyte vapor is supercooled utilizing conventional heat exchangers and the thus supercooled gas stream is passed over high surface area passive condensers. The condensed electrolyte is then drained from the condenser and the remainder of the gas stream passed on. The system is particularly useful for electrolytes such as phosphoric acid and molten carbonate, but can be used for other electrolyte cells and simple vapor separation as well.

Sederquist, Richard A. (Newington, CT); Szydlowski, Donald F. (East Hartford, CT); Sawyer, Richard D. (Canton, CT)

1983-01-01T23:59:59.000Z

300

Rapid screening buffer layers in photovoltaics  

DOE Patents [OSTI]

An apparatus and method of testing electrical impedance of a multiplicity of regions of a photovoltaic surface includes providing a multi-tipped impedance sensor with a multiplicity of spaced apart impedance probes separated by an insulating material, wherein each impedance probe includes a first end adapted for contact with a photovoltaic surface and a second end in operable communication with an impedance measuring device. The multi-tipped impedance sensor is used to contact the photovoltaic surface and electrical impedance of the photovoltaic material is measured between individual first ends of the probes to characterize the quality of the photovoltaic surface.

List, III, Frederick Alyious; Tuncer, Enis

2014-09-09T23:59:59.000Z

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


301

A novel hybrid (wind-photovoltaic) system sizing procedure  

SciTech Connect (OSTI)

Wind-photovoltaic hybrid system (WPHS) utilization is becoming popular due to increasing energy costs and decreasing prices of turbines and photovoltaic (PV) panels. However, prior to construction of a renewable generation station, it is necessary to determine the optimum number of PV panels and wind turbines for minimal cost during continuity of generated energy to meet the desired consumption. In fact, the traditional sizing procedures find optimum number of the PV modules and wind turbines subject to minimum cost. However, the optimum battery capacity is either not taken into account, or it is found by a full search between all probable solution spaces which requires extensive computation. In this study, a novel description of the production/consumption phenomenon is proposed, and a new sizing procedure is developed. Using this procedure, optimum battery capacity, together with optimum number of PV modules and wind turbines subject to minimum cost can be obtained with good accuracy. (author)

Hocaoglu, Fatih O. [Afyon Kocatepe University, Dept. of Electronics and Communication Eng., 03200 Afyonkarahisar (Turkey); Gerek, Oemer N.; Kurban, Mehmet [Anadolu University, Dept. of Electrical and Electronics Eng., 26555 Eskisehir (Turkey)

2009-11-15T23:59:59.000Z

302

Air-cooled vacuum steam condenser  

SciTech Connect (OSTI)

This patent describes a steam powered system. It comprises: a turbine for converting steam energy into mechanical energy upon expansion of steam therein, a boiler for generating steam to be fed to the turbine, and a conduit arrangement coupling the boiler to the turbine and then recoupling the turbine exhaust to the boiler through steam condensing mechanisms.

Larinoff, M.W.

1990-02-27T23:59:59.000Z

303

Photovoltaic power converter system with a controller configured to actively compensate load harmonics  

DOE Patents [OSTI]

Photovoltaic power converter system including a controller configured to reduce load harmonics is provided. The system comprises a photovoltaic array and an inverter electrically coupled to the array to generate an output current for energizing a load connected to the inverter and to a mains grid supply voltage. The system further comprises a controller including a first circuit coupled to receive a load current to measure a harmonic current in the load current. The controller includes a second circuit to generate a fundamental reference drawn by the load. The controller further includes a third circuit for combining the measured harmonic current and the fundamental reference to generate a command output signal for generating the output current for energizing the load connected to the inverter. The photovoltaic system may be configured to compensate harmonic currents that may be drawn by the load.

de Rooij, Michael Andrew (Clifton Park, NY); Steigerwald, Robert Louis (Burnt Hills, NY); Delgado, Eladio Clemente (Burnt Hills, NY)

2008-12-16T23:59:59.000Z

304

Steam and Condensate Systems  

E-Print Network [OSTI]

.00 or more. Many see costs of $6.00/$7.00 in the near future. These tremendous increases have caused steam systems, steam traps and condensate systems to become a major factor in overall plant efficiency and profit....

Yates, W.

1980-01-01T23:59:59.000Z

305

Ghost condensate busting  

SciTech Connect (OSTI)

Applying the Thomas-Fermi approximation to renormalizable field theories, we construct ghost condensation models that are free of the instabilities associated with violations of the null-energy condition.

Bilic, Neven [Rudjer Boskovic Institute, 10002 Zagreb (Croatia)] [Rudjer Boskovic Institute, 10002 Zagreb (Croatia); Tupper, Gary B; Viollier, Raoul D, E-mail: bilic@thphys.irb.hr, E-mail: gary.tupper@uct.ac.za, E-mail: raoul.viollier@uct.ac.za [Centre of Theoretical Physics and Astrophysics, University of Cape Town, Rondebosch 7701 (South Africa)

2008-09-15T23:59:59.000Z

306

Measure Guideline: Evaporative Condensers  

SciTech Connect (OSTI)

The purpose of this measure guideline on evaporative condensers is to provide information on a cost-effective solution for energy and demand savings in homes with cooling loads. This is a prescriptive approach that outlines selection criteria, design and installation procedures, and operation and maintenance best practices. This document has been prepared to provide a process for properly designing, installing, and maintaining evaporative condenser systems as well as understanding the benefits, costs, and tradeoffs.

German, A.; Dakin, B.; Hoeschele, M.

2012-03-01T23:59:59.000Z

307

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

SciTech Connect (OSTI)

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.

Herig, C..

2001-09-01T23:59:59.000Z

308

Breakthrough: micro-electronic photovoltaics  

SciTech Connect (OSTI)

Sandia developed tiny glitter-sized photovoltaic (PV) cells that could revolutionize solar energy collection. The crystalline silicon micro-PV cells will be cheaper and have greater efficiencies than current PV collectors. Micro-PV cells require relatively little material to form well-controlled, highly efficient devices. Cell fabrication uses common microelectric and micro-electromechanical systems (MEMS) techniques.

Okandan, Murat; Gupta, Vipin

2012-04-23T23:59:59.000Z

309

Electrochemical photovoltaic cells and electrodes  

DOE Patents [OSTI]

Improved electrochemical photovoltaic cells and electrodes for use therein, particularly electrodes employing amorphous silicon or polyacetylene coating are produced by a process which includes filling pinholes or porous openings in the coatings by electrochemical oxidation of selected monomers to deposit insulating polymer in the openings.

Skotheim, Terje A. (East Patchogue, NY)

1984-01-01T23:59:59.000Z

310

Photovoltaic cells employing zinc phosphide  

DOE Patents [OSTI]

A photovoltaic cell having a zinc phosphide absorber. The zinc phosphide can be a single or multiple crystal slice or a thin polycrystalline film. The cell can be a Schottky barrier, heterojunction or homojunction device. Methods for synthesizing and crystallizing zinc phosphide are disclosed as well as a method for forming thin films.

Barnett, Allen M. (Newark, DE); Catalano, Anthony W. (Wilmington, DE); Dalal, Vikram L. (Newark, DE); Masi, James V. (Wilbraham, MA); Meakin, John D. (Newark, DE); Hall, Robert B. (Newark, DE)

1984-01-01T23:59:59.000Z

311

NREL Photovoltaic Program FY 1993  

SciTech Connect (OSTI)

This report reviews the in-house and subcontracted research and development (R&D) activities under the National Renewable Energy Laboratory (NREL) Photovoltaic (PV) Program from October 1, 1992, through September 30, 1993 (fiscal year [FY] 1993). The NREL PV Program is part of the U.S. Department of Energy`s (DOE`s) National Photovoltaics Program, as described in the DOE Photovoltaics Program Plan, FY 1991 - FY 1995. The FY 1993 budget authority (BA) for carrying out the NREL PV Program was $40.1 million in operating funds and $0.9 million in capital equipment funds. An additional $4.8 million in capital equipment funds were made available for the new Solar Energy Research Facility (SERF) that will house the in-house PV laboratories beginning in FY 1994. Subcontract activities represent a major part of the NREL PV Program, with more than $23.7 million (nearly 59%) of the FY 1993 operating funds going to 70 subcontractors. In FY 1993, DOE assigned certain other PV subcontracting efforts to the DOE Golden Field Office (DOE/GO), and assigned responsibility for their technical support to the NREL PV Program. An example is the PV:BONUS (Building Opportunities in the U.S. for Photovoltaics) Project. These DOE/GO efforts are also reported in this document.

Not Available

1994-08-01T23:59:59.000Z

312

Photovoltaic Subcontract Program, FY 1990  

SciTech Connect (OSTI)

This report summarizes the progress of the subcontracted photovoltaic (PV) research and development (R D) performed under the Photovoltaics Program at the Solar Energy Research Institute (SERI). The SERI subcontracted PV research and development represents most of the subcontracted R D that is funded by the US Department of Energy (DOE) National Photovoltaics Program. This report covers fiscal year (FY) 1990: October 1, 1989 through September 30, 1990. During FY 1990, the SERI PV program started to implement a new DOE subcontract initiative, entitled the Photovoltaic Manufacturing Technology (PVMaT) Project.'' Excluding (PVMaT) because it was in a start-up phase, in FY 1990 there were 54 subcontracts with a total annualized funding of approximately $11.9 million. Approximately two-thirds of those subcontracts were with universities, at a total funding of over $3.3 million. Cost sharing by industry added another $4.3 million to that $11.9 million of SERI PV subcontracted R D. The six technical sections of this report cover the previously ongoing areas of the subcontracted program: the Amorphous Silicon Research Project, Polycrystalline Thin Films, Crystalline Silicon Materials Research, High-Efficiency Concepts, the New Ideas Program, and the University Participation Program. Technical summaries of each of the subcontracted programs discuss approaches, major accomplishments in FY 1990, and future research directions. Another section introduces the PVMaT project and reports the progress since its inception in FY 1990. Highlights of technology transfer activities are also reported.

Summers, K.A. (ed.)

1991-03-01T23:59:59.000Z

313

Breakthrough: micro-electronic photovoltaics  

ScienceCinema (OSTI)

Sandia developed tiny glitter-sized photovoltaic (PV) cells that could revolutionize solar energy collection. The crystalline silicon micro-PV cells will be cheaper and have greater efficiencies than current PV collectors. Micro-PV cells require relatively little material to form well-controlled, highly efficient devices. Cell fabrication uses common microelectric and micro-electromechanical systems (MEMS) techniques.

Okandan, Murat; Gupta, Vipin

2014-06-23T23:59:59.000Z

314

Improved photovoltaic cells and electrodes  

DOE Patents [OSTI]

Improved photovoltaic cells and electrodes for use therein, particularly electrodes employing amorphous silicon or polyacetylene coating are produced by a process which includes filling pinholes or porous openings in the coatings by electrochemical oxidation of selected monomers to deposit insulating polymer in the openings.

Skotheim, T.A.

1983-06-29T23:59:59.000Z

315

Building integrated photovoltaic systems analysis: Preliminary report  

SciTech Connect (OSTI)

The National Renewable Energy Laboratory (NREL) has estimated that the deployment of photovoltaics (PV) in the commercial buildings sector has the potential to contribute as much as 40 gigawatts peak electrical generation capacity and displace up to 1.1 quads of primary fuel use. A significant portion of this potential exists for smaller buildings under 25,000 square feet (2,300 square meters) in size or two stories or less, providing a strong cross over potential for residential applications as well. To begin to achieve this potential, research is needed to define the appropriate match of PV systems to energy end-uses in the commercial building sector. This report presents preliminary findings for a technical assessment of several alternative paths to integrate PV with building energy systems.

none,

1993-08-01T23:59:59.000Z

316

Composition and method for encapsulating photovoltaic devices  

DOE Patents [OSTI]

A composition and method for encapsulating a photovoltaic device which minimizes discoloration of the encapsulant. The composition includes an ethylene-vinyl acetate encapsulant, a curing agent, an optional ultraviolet light stabilizer, and/or an optional antioxidant. The curing agent is preferably 1,1-di-(t-butylperoxy)-3,3,5-trimethylcyclohexane; the ultraviolet light stabilizer is bis-(N-octyloxy-tetramethyl) piperidinyl sebacate and the antioxidant is selected from the group consisting of tris (2,4-di-tert-butylphenyl) phosphite, tetrakis methylene (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) methane, octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate, and 2,2'-ethylidene bis(4,6-di-t-butylphenyl) fluorophosponite. The composition is applied to a solar cell then cured. The cured product contains a minimal concentration of curing-generated chromophores and resists UV-induced degradation.

Pern, Fu-Jann (Golden, CO)

2000-01-01T23:59:59.000Z

317

Metals Production Requirements for Rapid Photovoltaics Deployment  

E-Print Network [OSTI]

If global photovoltaics (PV) deployment grows rapidly, the required input materials need to be supplied at an increasing rate. In this paper, we quantify the effect of PV deployment levels on the scale of metals production. For example, we find that if cadmium telluride {copper indium gallium diselenide} PV accounts for more than 3% {10%} of electricity generation by 2030, the required growth rates for the production of indium and tellurium would exceed historically-observed production growth rates for a large set of metals. In contrast, even if crystalline silicon PV supplies all electricity in 2030, the required silicon production growth rate would fall within the historical range. More generally, this paper highlights possible constraints to the rate of scaling up metals production for some PV technologies, and outlines an approach to assessing projected metals growth requirements against an ensemble of past growth rates from across the metals production sector. The framework developed in this paper may be...

Kavlak, Goksin; Jaffe, Robert L; Trancik, Jessika E

2015-01-01T23:59:59.000Z

318

Thin film photovoltaic cells  

DOE Patents [OSTI]

A solar cell has as its transparent electrical contact a grid made from a non-noble metal by providing a layer of copper oxide between the transparent electrical contact and the absorber-generator.

Rothwarf, Allen (Philadelphia, PA)

1981-01-01T23:59:59.000Z

319

Improved plant performance through evaporative steam condensing  

SciTech Connect (OSTI)

Combining an open cooling tower and a steam condenser into one common unit is a proven technology with many advantages in power generation application, including reduced first cost of equipment, reduced parasitic energy consumption, simplified design, reduced maintenance, and simplified water treatment, Performance of the steam turbine benefits from the direct approach to wet bulb temperature, and operating flexibility and reliability improve compared to a system with a cooling tower and surface condenser. System comparisons and case histories will be presented to substantiate improved systems economies.

Hutton, D.

1998-07-01T23:59:59.000Z

320

Fine-grained Photovoltaic Output Prediction using a Bayesian Ensemble Prithwish Chakraborty1,2  

E-Print Network [OSTI]

generation is increasingly reliant on renewable power sources, e.g., solar (pho- tovoltaic or PV) and wind Increasingly, local and distributed power generation e.g., through solar (photovoltaic or PV), wind, fuel cells and intermittent in their energy output, which makes integration with the power grid challenging. PV output

Ramakrishnan, Naren

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


321

Understanding Variability and Uncertainty of Photovoltaics for Integration with the Electric Power System  

E-Print Network [OSTI]

and Uncertainty of Photovoltaics for Integration with themodels and datasets. Photovoltaics fall under the broader

Mills, Andrew

2010-01-01T23:59:59.000Z

322

Synthesis and photovoltaic application of coper (I) sulfide nanocrystals  

E-Print Network [OSTI]

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-

Wu, Yue

2008-01-01T23:59:59.000Z

323

Synthesis and photovoltaic application of coper (I) sulfide nanocrystals  

E-Print Network [OSTI]

CdSe quantum dots for photovoltaic devices. Nano Lett. 7,nanocrystal-polymer hybrid photovoltaic cells. Appl. Phys.Gill, W. D. , Bube, R. H. Photovoltaic Properties of Cu 2 S-

Wu, Yue

2008-01-01T23:59:59.000Z

324

EXPERIMENTS with PHOTOVOLTAIC CELLS for high school science students  

E-Print Network [OSTI]

EXPERIMENTS with PHOTOVOLTAIC CELLS for high school science students By Dick Erickson ­ Pleasant Activity ­ Testing Photovoltaic Cells ..........................5 Expected Observations: ........................................................................................................8 II. LAB ACTIVITY - TESTING PHOTOVOLTAIC CELLS ..................................9 BEFORE YOU START

Oregon, University of

325

Semitransparent Organic Photovoltaic Cells with Laminated Top Electrode  

E-Print Network [OSTI]

Semitransparent Organic Photovoltaic Cells with Laminated Top Electrode Jung-Yong Lee, Steve T demonstrate semitransparent small molecular weight organic photovoltaic cells using a laminated silver metal cathode due to differences in optical absorption. KEYWORDS Organic photovoltaics, transparent

Cui, Yi

326

Femtosecond laser processing of photovoltaic and transparent materials  

E-Print Network [OSTI]

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.

Ahn, Sanghoon

2013-01-01T23:59:59.000Z

327

Sustainability of Large Deployment of Photovoltaics: Environmental & Grid Integration Research  

E-Print Network [OSTI]

1 Sustainability of Large Deployment of Photovoltaics: Environmental & Grid Integration Research Sustainability of Large Deployment of Photovoltaics: Environmental & Grid Integration Research www Photovoltaics Environmental Research Center Brookhaven National Laboratory #12;2 Source: PV Market Outlook

Ohta, Shigemi

328

Solution-processed photovoltaics with advanced characterization and analysis  

E-Print Network [OSTI]

at the 37th IEEE Photovoltaics Specialists Conference (D. B. Mitzi, Prog. Photovoltaics 2011, 20, 6. [23] S. Bag,R. Noufi, IEEE J. Photovoltaics 2012, T. Todorov, J. Tang,

Duan, Hsin-Sheng

2014-01-01T23:59:59.000Z

329

Photovoltaic Lifetime & Degradation Science Statistical Pathway Development: Acrylic Degradation  

E-Print Network [OSTI]

Photovoltaic Lifetime & Degradation Science Statistical Pathway Development: Acrylic Degradation, USA ABSTRACT In order to optimize and extend the life of photovoltaics (PV) modules, scientific photovoltaics. The statisti- cally significant relationships were investigated using lifetime and degradation

Rollins, Andrew M.

330

Photovoltaic nanocrystal scintillators hybridized on Si solar cells  

E-Print Network [OSTI]

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

Demir, Hilmi Volkan

331

Degradation Pathway Models for Photovoltaics Module Lifetime Performance  

E-Print Network [OSTI]

Degradation Pathway Models for Photovoltaics Module Lifetime Performance Nicholas R. Wheeler, Laura data from Underwriter Labs, featuring measurements taken on 18 identical photovoltaic (PV) modules in modules and their effects on module performance over lifetime. Index Terms--photovoltaics, statistical

Rollins, Andrew M.

332

Efficiency enhancement of luminescent solar concentrations for photovoltaic technologies  

E-Print Network [OSTI]

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):

Wang, Chunhua

2011-01-01T23:59:59.000Z

333

US photovoltaic patents: 1991--1993  

SciTech Connect (OSTI)

This document contains US patents on terrestrial photovoltaic (PV) power applications, including systems, components, and materials as well as manufacturing and support functions. The patent entries in this document were issued from 1991 to 1993. The entries were located by searching USPA, the database of the US Patent Office. The final search retrieved all patents under the class ``Batteries, Thermoelectric and Photoelectric`` and the subclasses ``Photoelectric,`` ``Testing,`` and ``Applications.`` The search also located patents that contained the words ``photovoltaic(s)`` or ``solar cell(s)`` and their derivatives. After the initial list was compiled, most of the patents on the following subjects were excluded: space photovoltaic technology, use of the photovoltaic effect for detectors, and subjects only peripherally concerned with photovoltaic. Some patents on these three subjects were included when ft appeared that those inventions might be of use in terrestrial PV power technologies.

Pohle, L

1995-03-01T23:59:59.000Z

334

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

E-Print Network [OSTI]

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

Wang, Jianfang

335

PROGRESS IN PHOTOVOLTAICS RESEARCH AND APPLICATIONS, VOL 2, 235-248 (1994) ~pplications Photovoltaics as a  

E-Print Network [OSTI]

PROGRESS IN PHOTOVOLTAICS RESEARCH AND APPLICATIONS, VOL 2, 235-248 (1994) ~pplications Photovoltaics as a Demand-side Management Technology: an Analysis of Peak-shaving and Direct Load Control Dept. of Energy University Center of Excellence for Photovoltaic Research and Development, Newark, DE

Delaware, University of

1994-01-01T23:59:59.000Z

336

Defect localization, characterization and reliability assessment in emerging photovoltaic devices.  

SciTech Connect (OSTI)

Microsystems-enabled photovoltaics (MEPV) can potentially meet increasing demands for light-weight, portable, photovoltaic solutions with high power density and efficiency. The study in this report examines failure analysis techniques to perform defect localization and evaluate MEPV modules. CMOS failure analysis techniques, including electroluminescence, light-induced voltage alteration, thermally-induced voltage alteration, optical beam induced current, and Seabeck effect imaging were successfully adapted to characterize MEPV modules. The relative advantages of each approach are reported. In addition, the effects of exposure to reverse bias and light stress are explored. MEPV was found to have good resistance to both kinds of stressors. The results form a basis for further development of failure analysis techniques for MEPVs of different materials systems or multijunction MEPVs. The incorporation of additional stress factors could be used to develop a reliability model to generate lifetime predictions for MEPVs as well as uncover opportunities for future design improvements.

Yang, Benjamin Bing-Yeh; Cruz-Campa, Jose Luis; Haase, Gad S.; Tangyunyong, Paiboon; Cole, Edward Isaac,; Okandan, Murat; Nielson, Gregory N.

2014-04-01T23:59:59.000Z

337

Galaxies as condensates  

E-Print Network [OSTI]

A novel interpretation of MOND is presented. For galactic data, in addition to Newtonian acceleration, there is an attractive acceleration peaking at Milgrom's parameter a_0. The peak lies within experimental error where a_0 = cH_0/2\\pi and H_0 is the present-time value of the Hubble constant. This peaking may be understood in terms of quantum mechanical mixing between Newtonian gravitation and the condensation mechanism. There are five pointers towards galaxies being Fermi-Dirac condensates.

D. V. Bugg

2012-12-21T23:59:59.000Z

338

Photovoltaic performance and reliability workshop  

SciTech Connect (OSTI)

This workshop was the sixth in a series of workshops sponsored by NREL/DOE under the general subject of photovoltaic testing and reliability during the period 1986--1993. PV performance and PV reliability are at least as important as PV cost, if not more. In the US, PV manufacturers, DOE laboratories, electric utilities, and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in the field were brought together to exchange the technical knowledge and field experience as related to current information in this evolving field of PV reliability. The papers presented here reflect this effort since the last workshop held in September, 1992. The topics covered include: cell and module characterization, module and system testing, durability and reliability, system field experience, and standards and codes.

Mrig, L. [ed.

1993-12-01T23:59:59.000Z

339

High voltage photovoltaic power converter  

DOE Patents [OSTI]

An array of independently connected photovoltaic cells on a semi-insulating substrate contains reflective coatings between the cells to enhance efficiency. A uniform, flat top laser beam profile is illuminated upon the array to produce electrical current having high voltage. An essentially wireless system includes a laser energy source being fed through optic fiber and cast upon the photovoltaic cell array to prevent stray electrical signals prior to use of the current from the array. Direct bandgap, single crystal semiconductor materials, such as GaAs, are commonly used in the array. Useful applications of the system include locations where high voltages are provided to confined spaces such as in explosive detonation, accelerators, photo cathodes and medical appliances.

Haigh, Ronald E. (Arvada, CO); Wojtczuk, Steve (Cambridge, MA); Jacobson, Gerard F. (Livermore, CA); Hagans, Karla G. (Livermore, CA)

2001-01-01T23:59:59.000Z

340

Scattering Properties of nanostructures : applications to photovoltaics  

E-Print Network [OSTI]

hydrogen during deposition, dangling bonds are compensated and hydrogenated amorphous silicon (a-Si:H) can be made into a promising photovoltaic

Derkacs, Daniel

2009-01-01T23:59:59.000Z

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


341

Photovoltaic Process Development and innovative Techniques.  

E-Print Network [OSTI]

?? Photovoltaic processing is one of the processes that have significance in semiconductor process line. It is complicated due to the no. of elements involved (more)

Ismail, Furrukh

2011-01-01T23:59:59.000Z

342

Photovoltaic cell with thin CS layer  

DOE Patents [OSTI]

An improved photovoltaic panel and method of forming a photovoltaic panel are disclosed for producing a high efficiency CdS/CdTe photovoltaic cell. The photovoltaic panel of the present invention is initially formed with a substantially thick Cds layer, and the effective thickness of the CdS layer is substantially reduced during regrowth to both form larger diameter CdTe crystals and substantially reduce the effective thickness of the C This invention was made with Government support under Subcontract No. ZL-7-06031-3 awarded by the Department of Energy. The Government has certain rights in this invention.

Jordan, John F. (El Paso, TX); Albright, Scot P. (El Paso, TX)

1994-01-18T23:59:59.000Z

343

Photovoltaic converter having apertured reflective enclosure  

SciTech Connect (OSTI)

This patent describes a photovoltaic converter. It comprises: a photovoltaic cell having an incident face upon which light is directed to cause photogeneration; an enclosure over the incident face, the wall of the enclosure having a reflective inner surface spaced apart from the incident face to permit light reflected from the incident face to be re-reflected by the inner surface and back to the photovoltaic cell; and an aperture through the wall of the enclosure to permit light to fall directly upon the voltaic cell. The ratio of the area of the aperture to the are of the incident face of the photovoltaic cell is less than about 0.2.

Sinton, R.A.; Swanson, R.M.

1990-10-02T23:59:59.000Z

344

NREL Photovoltaic Program FY 1994 bibliography  

SciTech Connect (OSTI)

This report lists all published documents of the Photovoltaic Program for FY 1994. Documents include conference papers, journal articles, book chapters, patents, etc.

none,

1994-12-01T23:59:59.000Z

345

Nellis AFB 'Sun Park' Photovoltaic Power Project  

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

Briefing is: UNCLASSIFIED Headquarters Air Combat Command Nellis AFB 'Sun Park' Photovoltaic Power Project *Capt Frank Hollifield *AFLOAJACLULT Overview *Objective * Provide...

346

Photovoltaic Technology Basics | Department of Energy  

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

and devices convert sunlight into electrical energy, and PV cells are commonly known as solar cells. Photovoltaics can literally be translated as light-electricity. First used in...

347

NREL Photovoltaic Program FY 1993 bibliography  

SciTech Connect (OSTI)

This report lists all published documents of the Photovoltaic Program for FY 1993. Documents include conference papers, journal articles, book chapters, etc.

Pohle, L. [ed.

1994-01-01T23:59:59.000Z

348

Flat-Plate Photovoltaic Module Basics  

Broader source: Energy.gov [DOE]

Flat-plate photovoltaic (PV) modules are made of several components, including the front surface materials, encapsulant, rear surface, and frame.

349

Economic and Environmental Analysis of Photovoltaic Energy ...  

E-Print Network [OSTI]

Mar 22, 2012 ... Economic and Environmental Analysis of Photovoltaic Energy Systems via Robust Optimization. Shimpei Okido(oks1024 ***at*** hotmail.com)

Shimpei Okido

2012-03-22T23:59:59.000Z

350

Sandia National Laboratories: Photovoltaic Systems Evaluation...  

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

can consistently perform over time, the DOE -in ... Second Annual Electric Power Research InstituteSandia Photovoltaic Systems Symposium On April 15, 2014, in...

351

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.

352

Molecular Designs Toward Improving Organic Photovoltaics.  

E-Print Network [OSTI]

??Organic photovoltaics (OPVs) that have been studied to date have poor power conversion efficiencies. This dissertation focuses on various molecular designs that could lead to (more)

Nantalaksakul, Arpornrat

2009-01-01T23:59:59.000Z

353

Photovoltaics performance and reliability workshop  

SciTech Connect (OSTI)

This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

Mrig, L. [ed.] [ed.

1992-11-01T23:59:59.000Z

354

Photovoltaics performance and reliability workshop  

SciTech Connect (OSTI)

This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

Mrig, L. (ed.) [ed.

1992-01-01T23:59:59.000Z

355

The interaction between photovoltaic materials and building forms.  

E-Print Network [OSTI]

??There is an intrinsic relationship between photovoltaic materials and building forms; although there are numerous imaginations and concepts about buildings integrated photovoltaic materials. The relationship (more)

Qiu, Liming

2009-01-01T23:59:59.000Z

356

A Photovoltaic Test Platform Realized with Multiple Independent Outputs.  

E-Print Network [OSTI]

??In this thesis, a project to design and build a photovoltaic test platform is discussed. Essentially, it is a photovoltaic simulator designed to have multiple (more)

Crawford, Kevin P.

2011-01-01T23:59:59.000Z

357

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...

358

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...

359

Effect of Solar Panel Cooling on Photovoltaic Performance.  

E-Print Network [OSTI]

?? 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)

Ali, Rehan

2014-01-01T23:59:59.000Z

360

Temperature-Dependent Electron Transport in Quantum Dot Photovoltaics  

E-Print Network [OSTI]

cell efficiency milestones. Quantum dot photovoltaics is inphotovoltaics provide the potential to create high-efficiencycell efficiency milestones. Quantum dot photovoltaics is in

Padilla, Derek

2013-01-01T23:59:59.000Z

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


361

Sun Valley Photovoltaic Power Project, Phase 1. Final report, June 1, 1978-February 28, 1979  

SciTech Connect (OSTI)

An application experiment was devised for fabrication, installation, operation, and evaluation of a concentrating photovoltaic system for direct conversion of sunlight to electricity. If the experiment is performed, the photovoltaic system will be connected to an electric motor load and to an electric utility system. Provisions will be made to allow the motor load to be supplied with power from either the photovoltaic system or the utility system. When the demand of the motor load is low, the photovoltaic system will deliver excess power to the utility system for use elsewhere. Thus, the experimental installation has been designed with sufficient flexibility to enable several modes of operation to be evaluated. This type of application is a typical example of on-site power generation at an individual load center involving two-way energy exchange with the adjacent utility system. Because a growing market for photovoltaic systems in this type of application is expected in the 1980's, the experiment will provide needed information in a timely manner. The experiment was devised jointly by the Los Angeles Department of Water and Power (LADWP) and its subcontractor, Spectrolab, Inc. LADWP will furnish a site and operate the equipment after installation. The subcontractor will manufacture and furnish a concentrating photovoltaic array with a power rating of approximately 200 kilowatts at one kilowatt per square meter of insolation. Other required equipment will be purchased to specification from appropriate suppliers. The photovoltaic system represents a state-of-the-art design at the time this report was prepared. However, minor design improvements may be made prior to and during system installation. All phases of fabrication, installation and operation will be documented through formal reports. The results of the experiment will contribute to the goals of the National Photovoltaic Conversion Program.

Goodman, Jr, F R

1980-03-01T23:59:59.000Z

362

Modeling of concentrating solar thermoelectric generators  

E-Print Network [OSTI]

The conversion of solar power into electricity is dominated by non-concentrating photovoltaics and concentrating solar thermal systems. Recently, it has been shown that solar thermoelectric generators (STEGs) are a viable ...

Ren, Zhifeng

363

The Color Glass Condensate  

E-Print Network [OSTI]

We provide a broad overview of the theoretical status and phenomenological applications of the Color Glass Condensate effective field theory describing universal properties of saturated gluons in hadron wavefunctions that are extracted from deeply inelastic scattering and hadron-hadron collision experiments at high energies.

F. Gelis; E. Iancu; J. Jalilian-Marian; R. Venugopalan

2010-02-01T23:59:59.000Z

364

Impacts of Market and Technical Characteristics for Developments of Photovoltaic Industry- A Study of Japanese Photovoltaic Industry.  

E-Print Network [OSTI]

??The thesis discusses the restrictions of photovoltaic industrial market and technical characteristics, and the reactions of Japanese government and photovoltaic industry. Furthermore, this thesis studies (more)

Hu, Jung-Yu

2012-01-01T23:59:59.000Z

365

Strategies in Optimizing Condensate Return  

E-Print Network [OSTI]

Optimizing condensate return for reuse as boiler feedwater is often a viable means of reducing fuel costs and improving boiler system efficiency. As more condensate is returned, less makeup is required and savings on water and water treatment costs...

Bloom, D.

366

NREL: Photovoltaics Research - Photovoltaic Manufacturing R&D Project  

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. PrincipalPhotovoltaic Manufacturing

367

High Penetration Photovoltaic Case Study Report  

SciTech Connect (OSTI)

Technical concerns with integrating higher penetrations of photovoltaic (PV) systems include grid stability, voltage regulation, power quality (voltage rise, sags, flicker, and frequency fluctuations), and protection and coordination. The current utility grid was designed to accommodate power flows from the central generation source to the transmission system and eventually to the distribution feeders. At the distribution level, the system was designed to carry power from the substation toward the load. Renewable distributed generation, particularly solar PV, provides power at the distribution level challenging this classical paradigm. As these resources become more commonplace the nature of the distribution network and its operation is changing to handle power flow in both directions. This report is focused on large PV installations in which penetration is significantly greater than 15% of maximum daytime feeder load. These case studies are intended to demonstrate success stories with integration of large PV plants at the distribution level as well as some of the solutions used by the utility to ensure safe, reliable operation of both the PV system and the distribution network.

Bank, J.; Mather, B.; Keller, J.; Coddington, M.

2013-01-01T23:59:59.000Z

368

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

369

Sustainability of Large Photovoltaic Deployment: Environmental Research  

E-Print Network [OSTI]

Sustainability of Large Photovoltaic Deployment: Environmental Research Sustainability of Large Photovoltaic Deployment: Environmental ResearchEnvironmental ResearchEnvironmental Research Vasilis Fthenakis, Cu, Fe) CdSO4 Cd Metal Tellurium Clean Glass Cd Electrowinning Cell Cu Recovery Te Separation from Cd

Homes, Christopher C.

370

National Center for Photovoltaics at NREL  

SciTech Connect (OSTI)

The National Center for Photovoltaics at the National Renewable Energy Laboratory (NREL) focuses on technology innovations that drive industry growth in U.S. photovoltaic (PV) manufacturing. The NCPV is a central resource for our nation's capabilities in PV research, development, deployment, and outreach.

VanSant, Kaitlyn; Wilson, Greg; Berry, Joseph; Al-Jassim, Mowafak; Kurtz, Sarah

2013-11-07T23:59:59.000Z

371

Photovoltaic Energy Program overview, fiscal year 1997  

SciTech Connect (OSTI)

The US Department of Energy (DOE) Photovoltaic Energy Program fosters the widespread acceptance of photovoltaic (PV) technology and accelerates commercial use of US PV products. The Program is founded on a collaborative strategy involving industry, the research and development community, potential users, utilities, and state and federal agencies. There are three main Program elements: Systems Engineering and Applications, Technology Development, and Research and Development.

NONE

1998-02-01T23:59:59.000Z

372

National Center for Photovoltaics at NREL  

ScienceCinema (OSTI)

The National Center for Photovoltaics at the National Renewable Energy Laboratory (NREL) focuses on technology innovations that drive industry growth in U.S. photovoltaic (PV) manufacturing. The NCPV is a central resource for our nation's capabilities in PV research, development, deployment, and outreach.

VanSant, Kaitlyn; Wilson, Greg; Berry, Joseph; Al-Jassim, Mowafak; Kurtz, Sarah

2014-06-10T23:59:59.000Z

373

25 Year Lifetime for Flexible Buildings Integrated Photovoltaics  

SciTech Connect (OSTI)

Although preliminary proof-of-principle of the efficacy of barrier materials and processes, first developed by Battelle at PNNL and commercialized by Vitex, has been demonstrated at the laboratory scale, there are several challenges to the practical commercial implementation of these developments in the Buildings Integrated Photovoltaics (BIPV) market. Two important issues that are addressed in this project are identifying a low cost substrate material that can survive in the outside environment (rain, heat, dust, hail, etc.) for 25 years and developing an encapsulation method for the photovoltaic (PV) cells that can meet the required barrier performance without driving the cost of the total barrier package out of range (remaining below $3.00/Wp). Without these solutions, current encapsulation technologies will limit the use of PV for BIPV applications. Flexible, light-weight packaging that can withstand 25 years in the field is required for a totally flexible integrated PV package. The benefit of this research is to make substantial progress in the development of a cost-effective, viable thin film barrier package which will be a critical enabling technology to meet the Solar America Initiative cost and device reliability goals, and to make photovoltaics (PV) more cost-competitive with electricity generated using fossil fuels. Increased PV installations will enable increased US electrical capacity and reduce dependence on imported oil through increased utilization of a widely abundant source of renewable energy (sunlight).

Gross, Mark E.

2010-07-10T23:59:59.000Z

374

Solar photovoltaic residence in Carlisle, Massachusetts  

SciTech Connect (OSTI)

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.

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

1981-01-01T23:59:59.000Z

375

Inhomogeneous chiral condensates  

E-Print Network [OSTI]

The chiral condensate, which is constant in vacuum, may become spatially modulated at moderately high densities where in the traditional picture of the QCD phase diagram a first-order chiral phase transition occurs. We review the current status of this idea, which originally dates back to Migdal's pion condensation, but recently received new momentum through studies on the nature of the chiral critical point and by the conjecture of a quarkyonic-matter phase. We discuss how these nonuniform phases emerge in generalized Ginzburg-Landau analyses as well as in specific calculations, both within effective models and in Dyson-Schwinger or large-$N_c$ approaches to QCD. Questions about the most favored shape of the modulations and its dimension, and about the effects of nonzero isospin chemical potential, strange quarks, color superconductivity, and external magnetic fields on these inhomogeneous phases will be addressed as well.

Michael Buballa; Stefano Carignano

2014-10-07T23:59:59.000Z

376

EPJ Photovoltaics 2, 20301 (2011) www.epj-pv.org  

E-Print Network [OSTI]

EPJ Photovoltaics 2, 20301 (2011) www.epj-pv.org DOI: 10.1051/epjpv/2011001 c Owned by the authors, published by EDP Sciences, 2011 EPJ PhotovoltaicsEPJ Photovoltaics Geometrical optimization and electrical online: 1 April 2011 Abstract This article investigates the optimal efficiency of a photovoltaic system

Paris-Sud XI, Universit de

2011-01-01T23:59:59.000Z

377

Advanced photovoltaic-trough development  

SciTech Connect (OSTI)

The scope of the work on photvoltaic troughs includes analytical studies, hardware development, and component testing. Various aspects of the system have been optimized and improvements have been realized, particularly in the receiver and reflecting surface designs. An empirical system performance model has been developed that closely agrees with measured system performance. This in-depth study of single-axis reflecting linear focus photovoltaic concentrators will be very beneficial in the development of improved models for similar systems as well as other phtovoltaic concentrator designs.

Spencer, R.; Yasuda, K.; Merson, B.

1982-04-01T23:59:59.000Z

378

Photovoltaic Films - 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 MayAtmosphericNuclear Security Administration the1 - September 2006 TheStevenAdministrationPhotometric(dmpePhotovoltaic

379

Heart - Shaped Nuclei: Condensation of Rotational Aligned Octupole Phonons  

E-Print Network [OSTI]

The strong octupole correlations in the mass region $A\\approx 226$ are interpreted as rotation-induced condensation of octupole phonons having their angular momentum aligned with the rotational axis. Discrete phonon energy and parity conservation generate oscillations of the energy difference between the lowest rotational bands with positive and negative parity. Anharmonicities tend to synchronize the the rotation of the condensate and the quadrupole shape of the nucleus forming a rotating heart shape.

S. Frauendorf

2007-10-24T23:59:59.000Z

380

Asymmetric condensed dark matter  

E-Print Network [OSTI]

We explore the viability of a boson dark matter candidate with an asymmetry between the number densities of particles and antiparticles. A simple thermal field theory analysis confirms that, under certain general conditions, this component would develop a Bose-Einstein condensate in the early universe that, for appropriate model parameters, could survive the ensuing cosmological evolution until now. The condensation of a dark matter component in equilibrium with the thermal plasma is a relativistic process, hence the amount of matter dictated by the charge asymmetry is complemented by a hot relic density frozen out at the time of decoupling. Contrary to the case of ordinary WIMPs, dark matter particles in a condensate can be very light, $10^{-22}\\,{\\rm eV} \\lesssim m \\lesssim 10^2\\,{\\rm eV}$; the lower limit arises from constraints on small-scale structure formation, while the upper bound ensures that the density from thermal relics is not too large. Big-Bang nucleosynthesis constrains the temperature of deco...

Aguirre, Anthony

2015-01-01T23:59:59.000Z

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


381

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

E-Print Network [OSTI]

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

Mills, Andrew D.

2009-01-01T23:59:59.000Z

382

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

E-Print Network [OSTI]

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

Cappers, Peter

2012-01-01T23:59:59.000Z

383

Photovoltaic performance of ultra-small PbSe quantum dots  

E-Print Network [OSTI]

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

Ma, Wanli

2014-01-01T23:59:59.000Z

384

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

E-Print Network [OSTI]

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

Mills, Andrew

2009-01-01T23:59:59.000Z

385

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

E-Print Network [OSTI]

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

Sathrum, Aaron John

2011-01-01T23:59:59.000Z

386

Producer-Focused Life Cycle Assessment of Thin-Film Silicon Photovoltaic Systems  

E-Print Network [OSTI]

microcrystalline- silicon photovoltaic cell, B) range ofpayback of roof mounted photovoltaic cells. Boustead, I. andmicrocrystalline-silicon photovoltaic cell, B) range of

Zhang, Teresa Weirui

2011-01-01T23:59:59.000Z

387

Valuing the Time-Varying Electricity Production of Solar Photovoltaic Cells  

E-Print Network [OSTI]

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

Borenstein, Severin

2005-01-01T23:59:59.000Z

388

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

E-Print Network [OSTI]

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

Leow, Shin Woei

2014-01-01T23:59:59.000Z

389

Rational Design and Preparation of Organic Semiconductors for use in Field Effect Transistors and Photovoltaic Cells  

E-Print Network [OSTI]

in thin film organic photovoltaic cells (OPVs) is presented.Effect Transistors and Photovoltaic Cells By Clayton EdwardEffect Transistors and Photovoltaic Cells By Clayton Edward

Mauldin, Clayton Edward

2010-01-01T23:59:59.000Z

390

Photovoltaic Devices Employing Ternary PbSxSe1-x Nanocrystals  

E-Print Network [OSTI]

Photovoltaic Devices Employing Ternary PbS x Se 1-xalloy nanoparticles. Photovoltaic devices made using ternaryInformation for Efficient Photovoltaic Devices Employing

Alivisatos, A. Paul

2009-01-01T23:59:59.000Z

391

Spectroscopy of Photovoltaic Materials: Charge-Transfer Complexes and Titanium Dioxide  

E-Print Network [OSTI]

RIVERSIDE Spectroscopy of Photovoltaic Materials: Charge-DISSERTATION Spectroscopy of Photovoltaic Materials: Charge-function of photovoltaic (PV) and photocatalytic (PC)

Dillon, Robert

2013-01-01T23:59:59.000Z

392

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

E-Print Network [OSTI]

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

Hoen, Ben

2013-01-01T23:59:59.000Z

393

Producer-Focused Life Cycle Assessment of Thin-Film Silicon Photovoltaic Systems  

E-Print Network [OSTI]

installed power from photovoltaic systems worldwide fromBest research photovoltaic efficiencies (Kazmerski,as a function of time for numerous types of photovoltaic

Zhang, Teresa Weirui

2011-01-01T23:59:59.000Z

394

A Cradle to Grave Framework for Environmental Assessment of Photovoltaic Systems  

E-Print Network [OSTI]

impacts and costs of photovoltaic systems: Current state ofEnergy Payback Time for Photovoltaic Modules, ProceedingsLife-cycle assessment of photovoltaic modules: Comparison of

Zhang, Teresa; Dornfeld, David

2010-01-01T23:59:59.000Z

395

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

E-Print Network [OSTI]

Californias Solar Photovoltaic Subsidies? Center for thefrom Residential Photovoltaic Systems Nam R. Darghouth,FROM RESIDENTIAL PHOTOVOLTAIC SYSTEMS Nam R. Darghouth

Barbose, Galen

2013-01-01T23:59:59.000Z

396

Do Photovoltaic Energy Systems Effect Residential Selling Prices? Results from a California Statewide Investigation.  

E-Print Network [OSTI]

DO PHOTOVOLTAIC ENERGY SYSTEMS AFFECT RESIDENTIAL SELLINGopportunity employer. DO PHOTOVOLTAIC ENERGY SYSTEMS AFFECTin the U.S. have sold with photovoltaic (PV) energy systems

Hoen, Ben

2012-01-01T23:59:59.000Z

397

Nanocrystal Photovoltaics: The Case of Cu2S-CdS  

E-Print Network [OSTI]

high conversion efficiency photovoltaics, utilizing self-low-cost and low-efficiency photovoltaics. Third generationgeneration photovoltaics: Ultra-high conversion efficiency

Rivest, Jessica Louis Baker

2011-01-01T23:59:59.000Z

398

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

E-Print Network [OSTI]

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

Leow, Shin Woei

2014-01-01T23:59:59.000Z

399

Laser Assisted Nanomanufacturing with Solution Processed Nanoparticles for Low-cost Electronics and Photovoltaics  

E-Print Network [OSTI]

Electronics and Photovoltaics by Heng Pan A dissertationcost Electronics and Photovoltaics Copyright 2009 By HengLow-cost Electronics and Photovoltaics by Heng Pan Doctor of

Pan, Heng

2009-01-01T23:59:59.000Z

400

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

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

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


401

Sustainability of Very Large Photovoltaic DeploymentSustainability of Very Large Photovoltaic Deployment email: vmf5@columbia.edu  

E-Print Network [OSTI]

1 Sustainability of Very Large Photovoltaic DeploymentSustainability of Very Large Photovoltaic for Life Cycle Analysis Columbia University and National Photovoltaics Environmental Research Center, 2006 - Fthenakis & Alsema, Progress in Photovoltaics, 14, 275, 2006 #12;9 0 200 400 600 800 1000 1200

Ohta, Shigemi

402

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

E-Print Network [OSTI]

-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

Cao, Guozhong

403

Appropriate storage for high-penetration grid-connected photovoltaic plants A.A. Solomon a  

E-Print Network [OSTI]

% of the PV-generated energy, and needing to re-structure the manner in which the grid was then being operated-or-less arbitrarily sized storage example, and allowing a small amount of PV energy dumping, we showed o Article history: Received 5 April 2011 Accepted 10 October 2011 Keywords: Photovoltaics Energy

Kammen, Daniel M.

404

Maximum Power Transfer Tracking for a Photovoltaic-Supercapacitor Energy System  

E-Print Network [OSTI]

that efficiency of the charger varies depending on the power output level of the energy generation source charger efficiency. More precisely, previous MPPT methods only maximize the power output of the energy the power comes from a renewable source such a solar cell (photovoltaic, or PV for short) or a windmill

Pedram, Massoud

405

Models used to assess the performance of photovoltaic systems.  

SciTech Connect (OSTI)

This report documents the various photovoltaic (PV) performance models and software developed and utilized by researchers at Sandia National Laboratories (SNL) in support of the Photovoltaics and Grid Integration Department. In addition to PV performance models, hybrid system and battery storage models are discussed. A hybrid system using other distributed sources and energy storage can help reduce the variability inherent in PV generation, and due to the complexity of combining multiple generation sources and system loads, these models are invaluable for system design and optimization. Energy storage plays an important role in reducing PV intermittency and battery storage models are used to understand the best configurations and technologies to store PV generated electricity. Other researcher's models used by SNL are discussed including some widely known models that incorporate algorithms developed at SNL. There are other models included in the discussion that are not used by or were not adopted from SNL research but may provide some benefit to researchers working on PV array performance, hybrid system models and energy storage. The paper is organized into three sections to describe the different software models as applied to photovoltaic performance, hybrid systems, and battery storage. For each model, there is a description which includes where to find the model, whether it is currently maintained and any references that may be available. Modeling improvements underway at SNL include quantifying the uncertainty of individual system components, the overall uncertainty in modeled vs. measured results and modeling large PV systems. SNL is also conducting research into the overall reliability of PV systems.

Stein, Joshua S.; Klise, Geoffrey T.

2009-12-01T23:59:59.000Z

406

Materials/Condensed Matter  

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 recovery challenge fund LasDubey selectedContractMaterials/Condensed Matter Print

407

Materials/Condensed Matter  

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 recovery challenge fund LasDubey selectedContractMaterials/Condensed Matter

408

Condensation and Large Cardinals Sy-David Friedman, Peter Holy  

E-Print Network [OSTI]

Condensation and Large Cardinals Sy-David Friedman, Peter Holy Abstract We introduce two generalized condensation principles: Local Club Condensation and Stationary Condensation. We show that while Strong Condensation (a generalized Condensation principle intro- duced by Hugh Woodin in [19

409

Photovoltaic Subcontract Program, FY 1991. Annual report, [October 1, 1990--September 30, 1991  

SciTech Connect (OSTI)

This report summarizes the fiscal year (FY) 1991 (October 1, 1990, through September 30, 1991) progress of the subcontracted photovoltaic (PV) research and development (R&D) performed under the Photovoltaic Advanced Research and Development Project at the National Renewable Energy Laboratory (NREL) -- formerly the Solar Energy Research Institute (SERI). The mission of the national PV program is to develop PV technology for large-scale generation of economically competitive electric power in the United States. The technical sections of the report cover the main areas of the subcontract program: the Amorphous Silicon Research Project, Polycrystalline Thin Films, Crystalline Silicon Materials Research, High-Efficiency Concepts, the New Ideas Program, the University Participation Program, and the Photovoltaic Manufacturing Technology (PVMaT) project. Technical summaries of each of the subcontracted programs provide a discussion of approaches, major accomplishments in FY 1991, and future research directions.

Not Available

1992-03-01T23:59:59.000Z

410

Return Condensate to the Boiler  

SciTech Connect (OSTI)

This revised ITP tip sheet on returning condensate to boilers provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

411

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

E-Print Network [OSTI]

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

Chin, B.L.

2011-01-01T23:59:59.000Z

412

Diffraction spectral filter for use in extreme-UV lithography condenser  

SciTech Connect (OSTI)

A condenser system for generating a beam of radiation includes a source of radiation light that generates a continuous spectrum of radiation light; a condenser comprising one or more first optical elements for collecting radiation from the source of radiation light and for generating a beam of radiation; and a diffractive spectral filter for separating first radiation light having a particular wavelength from the continuous spectrum of radiation light. Cooling devices can be employed to remove heat generated. The condenser system can be used with a ringfield camera in projection lithography.

Sweatt, William C. (Albuquerque, NM); Tichenor, Daniel A. (Castro Valley, CA); Bernardez, Luis J. (Livermore, CA)

2002-01-01T23:59:59.000Z

413

In-situ characterization of femtosecond laser-induced crystallization in borosilicate glass using time-resolved surface third-harmonic generation  

SciTech Connect (OSTI)

Coherent phonon dynamics in condensed-phase medium are responsible for important material properties including thermal and electrical conductivities. We report a structural dynamics technique, time-resolved surface third-harmonic generation (TRSTHG) spectroscopy, to capture transient phonon propagation near the surface of polycrystalline CaF{sub 2} and amorphous borosilicate (BK7) glass. Our approach time-resolves the background-free, high-sensitivity third harmonic generation (THG) signal in between the two crossing near-IR pulses. Pronounced intensity quantum beats reveal the impulsively excited low-frequency Raman mode evolution on the femtosecond to picosecond timescale. After amplified laser irradiation, danburite-crystal-like structure units form at the glass surface. This versatile TRSTHG setup paves the way to mechanistically study and design advanced thermoelectrics and photovoltaics.

Liu, Weimin; Wang, Liang; Han, Fangyuan; Fang, Chong [Department of Chemistry, Oregon State University, Corvallis, Oregon 97331 (United States)] [Department of Chemistry, Oregon State University, Corvallis, Oregon 97331 (United States)

2013-11-11T23:59:59.000Z

414

Abstract--Application of individual distributed generators can cause as many problems as it may solve. A better way to  

E-Print Network [OSTI]

, microturbines, photovoltaic, fuel cells and wind- power. Most emerging technologies such as micro-turbines, photovoltaic, fuel cells and gas internal combustion engines with permanent magnet generator require generation technologies permits generators to be placed optimally in relation to heat loads allowing for use

415

Amorphous Silicon-Carbon Nanostructure Photovoltaic Devices  

E-Print Network [OSTI]

hydrogen dilution in silane on light induced degradation of hydrogenated amor- phous silicon films for solar photovoltaichydrogen content from 14-22%[76]. Hydrogenated amorphous silicon has promise as a photovoltaic

Schriver, Maria Christine

2012-01-01T23:59:59.000Z

416

Battery compatibility with photovoltaic charge controllers  

SciTech Connect (OSTI)

Photovoltaic (PV) systems offer a cost-effective solution to provide electrical power for a wide variety of applications, with battery performance playing a major role in their success. This paper presents some of the results of an industry meeting regarding battery specifications and ratings that photovoltaic system designers require, but do not typically have available to them. Communications between the PV industry and the battery industry regarding appropriate specifications have been uncoordinated and poor in the past. This paper also discusses the effort under way involving the PV industry and battery manufacturers, and provides a working draft of specifications to develop and outline the information sorely needed on batteries. The development of this information is referred to as ``Application Notes for Batteries in Photovoltaic Systems.`` The content of these ``notes`` has been compiled from various sources, including the input from the results of a survey on battery use in the photovoltaic industry. Only lead-acid batteries are discussed

Harrington, S.R. [Ktech Corp., Albuquerque, NM (United States); Bower, W.I. [Sandia National Labs., Albuquerque, NM (United States)

1992-12-31T23:59:59.000Z

417

Modesto Irrigation District- Photovoltaic Rebate Program  

Broader source: Energy.gov [DOE]

Modesto Irrigation District offers a photovoltaic rebate program for all of their electric customers. The peak output capacity of a system must be 1 kW or greater to participate. Systems up to 30...

418

Practical Roadmap and Limits to Nanostructured Photovoltaics  

E-Print Network [OSTI]

The significant research interest in the engineering of photovoltaic (PV) structures at the nanoscale is directed toward enabling reductions in PV module fabrication and installation costs as well as improving cell power ...

Lunt, Richard R.

419

Performance Assessment of Photovoltaic Attic Ventilator Fans  

E-Print Network [OSTI]

has long been identified as a method to abate such heat gains. We present test results from using the photovoltaic (PV) attic ventilator fans in a test home to assess impact on attic and cooling energy performance....

Parker, D. S.; Sherwin, J. R.

2000-01-01T23:59:59.000Z

420

Time-Resolved Photoluminescence and Photovoltaics  

SciTech Connect (OSTI)

The time-resolved photoluminescence (TRPL) technique and its ability to characterize recombination in bulk photovoltaic semiconductor materials are reviewed. Results from a variety of materials and a few recent studies are summarized and compared.

Metzger, W. K.; Ahrenkiel, R. K.; Dippo, P.; Geisz, J.; Wanlass, M. W.; Kurtz, S.

2005-01-01T23:59:59.000Z

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


421

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...

422

Ashland Electric Utility- Photovoltaic Rebate Program  

Broader source: Energy.gov [DOE]

The City of Ashland Conservation Division offers electric customers installing photovoltaic systems a rebate of either $0.75 per watt (residential) or $1.00 per watt (commercial), up to a maximum...

423

GreyStone Power- Photovoltaic Rebate Program  

Broader source: Energy.gov [DOE]

GreyStone Power, an electricity cooperative in Georgia, offers a rebate for solar photovoltaic (PV) systems to members. The one-time rebate is offered for PV installations that are interconnected...

424

Central Georgia EMC- Photovoltaic Rebate Program  

Broader source: Energy.gov [DOE]

In June 2008, Central Georgia Electric Membership Corporation (CGEMC) began offering a rebate of $450 per kilowatt (kW) to residential members who install photovoltaic (PV) systems that are...

425

Poudre Valley REA- Photovoltaic Rebate Program  

Broader source: Energy.gov [DOE]

Poudre Valley REC is providing rebates to their residential customers who install photovoltaic (PV) systems on their homes. This rebate program was timed to coincide with the Colorado Governor's...

426

Residential photovoltaic worth : a summary assessment  

E-Print Network [OSTI]

Two critical perspectives have been addressed by the analyses of residential photovoltaic worth. For the researcher and designer have been established allowable costs. For the homeowner and institutional decision-makers ...

Dinwoodie, Thomas L.

1982-01-01T23:59:59.000Z

427

Silicon cast wafer recrystallization for photovoltaic applications  

E-Print Network [OSTI]

Current industry-standard methods of manufacturing silicon wafers for photovoltaic (PV) cells define the electrical properties of the wafer in a first step, and then the geometry of the wafer in a subsequent step. The ...

Hantsoo, Eerik T. (Eerik Torm)

2008-01-01T23:59:59.000Z

428

Photovoltaic module and module arrays  

DOE Patents [OSTI]

A photovoltaic (PV) module including a PV device and a frame. The PV device has a PV laminate defining a perimeter and a major plane. The frame is assembled to and encases the laminate perimeter, and includes leading, trailing, and side frame members, and an arm that forms a support face opposite the laminate. The support face is adapted for placement against a horizontal installation surface, to support and orient the laminate in a non-parallel or tilted arrangement. Upon final assembly, the laminate and the frame combine to define a unitary structure. The frame can orient the laminate at an angle in the range of 3.degree.-7.degree. from horizontal, and can be entirely formed of a polymeric material. Optionally, the arm incorporates integral feature(s) that facilitate interconnection with corresponding features of a second, identically formed PV module.

Botkin, Jonathan (El Cerrito, CA); Graves, Simon (Berkeley, CA); Lenox, Carl J. S. (Oakland, CA); Culligan, Matthew (Berkeley, CA); Danning, Matt (Oakland, CA)

2012-07-17T23:59:59.000Z

429

Photovoltaic module and module arrays  

DOE Patents [OSTI]

A photovoltaic (PV) module including a PV device and a frame, The PV device has a PV laminate defining a perimeter and a major plane. The frame is assembled to and encases the laminate perimeter, and includes leading, trailing, and side frame members, and an arm that forms a support face opposite the laminate. The support face is adapted for placement against a horizontal installation surface, to support and orient the laminate in a non-parallel or tilted arrangement. Upon final assembly, the laminate and the frame combine to define a unitary structure. The frame can orient the laminate at an angle in the range of 3.degree.-7.degree. from horizontal, and can be entirely formed of a polymeric material. Optionally, the arm incorporates integral feature(s) that facilitate interconnection with corresponding features of a second, identically formed PV module.

Botkin, Jonathan; Graves, Simon; Lenox, Carl J. S.; Culligan, Matthew; Danning, Matt

2013-08-27T23:59:59.000Z

430

Effects of Metastabilities on CIGS Photovoltaic Modules  

Broader source: Energy.gov [DOE]

This poster describes a SunShot Initiative solar project led by a team from Nexcis Photovoltaic Technology entitled "Effects of Metastabilities on CIGS Photovoltaic Modules." The team studied the driving force of the mechanisms which governs the different observed phases during storage, light exposition and annealing. The aim of this study is to obtain a better understanding of this phenomenon and hence a better evaluation of its impact on solar panel reliability.

431

Photovoltaic concentrator assembly with optically active cover  

DOE Patents [OSTI]

A photovoltaic concentrator assembly that includes a housing that defines an internal volume and includes a rim, wherein the rim defines an opening into the internal volume, a photovoltaic cell positioned in the internal volume, and an optical element that includes an optically active body and a flange extending outward from the body, wherein the flange is sealingly engaged with the rim of the housing to enclose the internal volume.

Plesniak, Adam P

2014-01-21T23:59:59.000Z

432

Utility-Interconnected Photovoltaic Systems: Evaluating the Rationale for the Utility-Accessible External Disconnect Switch  

SciTech Connect (OSTI)

The utility-accessible alternating current (AC) external disconnect switch (EDS) for distributed generators, including photovoltaic (PV) systems, is a hardware feature that allows a utility?s employees to manually disconnect a customer-owned generator from the electricity grid. This paper examines the utility-accessible EDS debate in the context of utility-interactive PV systems for residential and small commercial installations. It also evaluates the rationale for EDS requirements.

Coddington, M.; Margolis, R.M.; Aabakken, J.

2008-01-01T23:59:59.000Z

433

Analytical and Experimental Study of The Effects of Non-Condensable in a Passive Condenser System for The Advanced Boiling Water Reactor  

SciTech Connect (OSTI)

The main goal of the project is to study analytically and experimentally condensation heat transfer for the passive condenser system relevant to the safety of next generation nuclear reactor such as Simplified Boiling Water Reactor (BWR). The objectives of this three-year research project are to: (1) obtain experimental data on the phenomenon of condensation of steam in a vertical tube in the presence of non-condensable for flow conditions of PCCS, (2) develop a analytic model for the condensation phenomena in the presence of non-condensable gas for the vertical tube, and (3) assess the RELAP5 computer code against the experimental data. The project involves experiment, theoretical modeling and a thermal-hydraulic code assessment. It involves graduate and undergraduate students' participation providing them with exposure and training in advanced reactor concepts and safety systems

Shripad T. Revankar; Seungmin Oh

2003-09-30T23:59:59.000Z

434

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

E-Print Network [OSTI]

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

Leow, Shin Woei

2014-01-01T23:59:59.000Z

435

E-Print Network 3.0 - aquatic center photovoltaic Sample Search...  

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

to synthesize conjugated polymer composites for use in photovoltaic and optoelectronic devices Greenscale Center... , optoelectronics, polymer photovoltaics, and control...

436

US Photovoltaic Patents, 1988--1990  

SciTech Connect (OSTI)

This document contains US patents on terrestrial photovoltaic (PV) power applications, including systems, components, and materials, as well as manufacturing and support functions. The patent entries in this document were issued from 1988 through 1990. The entries were located by searching USPA, the data base of the US Patent Office. The final search retrieved all patents under the class ``Batteries, Thermoelectric and Photoelectric`` and the subclasses ``Photoelectric,`` ``Testing,`` and ``Applications.`` The search also located patents that contained the words ``photovoltaic(s)`` or ``solar cell(s)`` and their derivatives. A manual search of the patents in the Solar Energy Research Institute (SERI) patent file augmented the data base search. After the initial list was compiled, most of the patents on the following subjects were excluded: space photovoltaic technology, use of the photovoltaic effect for detectors and subjects only peripherally concerned with photovoltaics. Some patents on these three subjects were included when it appeared that those inventions might be of use in terrestrial PV power technologies.

Not Available

1991-12-01T23:59:59.000Z

437

US Photovoltaic Patents, 1988--1990  

SciTech Connect (OSTI)

This document contains US patents on terrestrial photovoltaic (PV) power applications, including systems, components, and materials, as well as manufacturing and support functions. The patent entries in this document were issued from 1988 through 1990. The entries were located by searching USPA, the data base of the US Patent Office. The final search retrieved all patents under the class Batteries, Thermoelectric and Photoelectric'' and the subclasses Photoelectric,'' Testing,'' and Applications.'' The search also located patents that contained the words photovoltaic(s)'' or solar cell(s)'' and their derivatives. A manual search of the patents in the Solar Energy Research Institute (SERI) patent file augmented the data base search. After the initial list was compiled, most of the patents on the following subjects were excluded: space photovoltaic technology, use of the photovoltaic effect for detectors and subjects only peripherally concerned with photovoltaics. Some patents on these three subjects were included when it appeared that those inventions might be of use in terrestrial PV power technologies.

Not Available

1991-12-01T23:59:59.000Z

438

FPGA Implementation of Multilayer Perceptron for Modeling of Photovoltaic panel  

SciTech Connect (OSTI)

The Number of electronic applications using artificial neural network-based solutions has increased considerably in the last few years. However, their applications in photovoltaic systems are very limited. This paper introduces the preliminary result of the modeling and simulation of photovoltaic panel based on neural network and VHDL-language. In fact, an experimental database of meteorological data (irradiation, temperature) and output electrical generation signals of the PV-panel (current and voltage) has been used in this study. The inputs of the ANN-PV-panel are the daily total irradiation and mean average temperature while the outputs are the current and voltage generated from the panel. Firstly, a dataset of 4x364 have been used for training the network. Subsequently, the neural network (MLP) corresponding to PV-panel is simulated using VHDL language based on the saved weights and bias of the network. Simulation results of the trained MLP-PV panel based on Matlab and VHDL are presented. The proposed PV-panel model based ANN and VHDL permit to evaluate the performance PV-panel using only the environmental factors and involves less computational efforts, and it can be used for predicting the output electrical energy from the PV-panel.

Mekki, H.; Belhout, K. [Department of Electronics, RASIC laboratory BLIDA UniversityBLIDA (Algeria); Mellit, A.; Salhi, H. [Department of Electronics, Control laboratory BLIDA UniversityBLIDA (Algeria)

2008-06-12T23:59:59.000Z

439

Troubleshooting surface condenser venting systems  

SciTech Connect (OSTI)

In an ideal situation, the condensing pressure achievable in a steam surface condenser is determined by the exiting cooling water temperature. However, the failure of the venting system to properly remove noncondensible gases from the steam condenser will result in elevated condenser pressures. Information is presented in this paper relative to the most common venting systems available, as well as providing procedures for troubleshooting each type of system. A description is given of the various operating characteristics, along with narrative discussions of field problems and experiences. Simple visual, audible and physical guides to the analysis of venting system problems are discussed. Power plant operating personnel will be able to utilize this information when investigating steam condenser performance problems. A check list is provided which can be used to isolate these performance problems. 4 figs., 3 tabs.

Lines, J.R.; Athey, R.E.; Frens, L.L. [Graham Manufacturing Company, Batavia, NY (United States)

1996-08-01T23:59:59.000Z

440

Vortex Structure in Charged Condensate  

E-Print Network [OSTI]

We study magnetic fields in the charged condensate that we have previously argued should be present in helium-core white dwarf stars. We show that below a certain critical value the magnetic field is entirely expelled from the condensate, while for larger values it penetrates the condensate within flux-tubes that are similar to Abrikosov vortex lines; yet higher fields lead to the disruption of the condensate. We find the solution for the vortex lines in both relativistic and nonrelativistic theories that exhibit the charged condensation. We calculate the energy density of the vortex solution and the values of the critical magnetic fields. The minimum magnetic field required for vortices to penetrate the helium white dwarf cores ranges from roughly 10^7 to 10^9 Gauss. Fields of this strength have been observed in white dwarfs. We also calculate the London magnetic field due to the rotation of a dwarf star and show that its value is rather small.

Gabadadze, Gregory

2009-01-01T23:59:59.000Z

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


441

Vortex Structure in Charged Condensate  

E-Print Network [OSTI]

We study magnetic fields in the charged condensate that we have previously argued should be present in helium-core white dwarf stars. We show that below a certain critical value the magnetic field is entirely expelled from the condensate, while for larger values it penetrates the condensate within flux-tubes that are similar to Abrikosov vortex lines; yet higher fields lead to the disruption of the condensate. We find the solution for the vortex lines in both relativistic and nonrelativistic theories that exhibit the charged condensation. We calculate the energy density of the vortex solution and the values of the critical magnetic fields. The minimum magnetic field required for vortices to penetrate the helium white dwarf cores ranges from roughly 10^7 to 10^9 Gauss. Fields of this strength have been observed in white dwarfs. We also calculate the London magnetic field due to the rotation of a dwarf star and show that its value is rather small.

Gregory Gabadadze; Rachel A. Rosen

2009-05-14T23:59:59.000Z

442

Analysis of interrelationships between photovoltaic power and battery storage for electric utility load management  

SciTech Connect (OSTI)

The impact of photovoltaic power generation on the electric utility's load shape under supply-side peak load management conditions is explored. Results show that some utilities employing battery storage for peak load shaving might benefit from use of photovoltaic (PV) power, the extent of its usefulness being dependent on the specific load shapes as well as the photovoltaic array orientations. Typical utility load shapes both in the eastern and in the western parts of the U.S. are examined for this purpose. While photovoltaic power generation seems to present a bigger impact on the load of the western utility, both utilities will experience considerable savings on the size of the battery system required to shave the peak loads and also in the night-time base capacity required to charge the battery. Results show that when the cost of 2-axis tracking PV systems drop to $2/Wp, the southwestern utility will experience net cost savings when the PV-battery hybrid system is employed for load management. On the other hand, because of lesser availability of solar energy, the southeastern utility shows adverse economics for such a system.

Chowdhury, B.H.; Rahman, S.

1988-08-01T23:59:59.000Z

443

Condensed Matter Theory Center Fall 2009 Symposium  

E-Print Network [OSTI]

Condensed Matter Theory Center Fall 2009 Symposium September 28 - October 2, 2009 2202 Physics Barnett, "Vortex lattice locking in rotating BECs and spinor condensates" Maxim Dzero, "Cooper pair

Lathrop, Daniel P.

444

SHM of Galaxies Embedded within Condensed Neutrino Matter  

E-Print Network [OSTI]

We re-examine the question of condensed neutrino objects (de- generate neutrino matter) based on new calculations. The potential show-stopper issue of free-streaming light neutrinos inhibiting galaxy formation is addressed. We compute the period associated with sim- ple harmonic motion (SHM) of galaxies embedded within condensed neutrino objects. For observational consequences, we examine the ro- tational velocities of embedded galaxies using Hickson 88A (N6978) as the prototype. Finally, we point out that degenerate neutrino objects repel each other in overlap and we compute directly the repulsive force between two interesting and relevant con?gurations. An outstanding issue is whether the accompanying tidal forces generated by condensed neutrino matter on embedded galaxies give rise to galactic bulges and halos.

Peter D. Morley; Douglas J. Buettner

2014-10-22T23:59:59.000Z

445

Residential Condensing Gas Furnaces | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energy fromComments onReply CommentsNext-GenerationDryer (AppendixCondensing

446

Holy Cross Energy- WE CARE Renewable Energy Generation Rebate Program  

Broader source: Energy.gov [DOE]

Holy Cross Energy's WE CARE (With Efficiency, Conservation And Renewable Energy) Program offers a $1.50-per-watt DC incentive for renewable energy generation using wind, hydroelectric, photovoltaic...

447

Semiconductor nanowire array: potential substrates for photocatalysis and photovoltaics  

E-Print Network [OSTI]

Semiconductor nanowire array: potential substrates for photocatalysis and photovoltaics Yiying Wu, these nanowire arrays could find unique applications in photocatalysis and photovoltaics. KEY WORDS luminescence efficiency [5,6], enhancement of thermoelectric figure of merit [7] and lowered lasing threshold

Yang, Peidong

448

Nellis AFB 'Sun Park' Photovoltaic Power Project | Department...  

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

Nellis AFB 'Sun Park' Photovoltaic Power Project Nellis AFB 'Sun Park' Photovoltaic Power Project Presentation covers the FUPWG Meeting, held on May 1-2, 2007 in Cape Canaveral,...

449

III-V High-Efficiency Multijunction Photovoltaics (Fact Sheet)  

SciTech Connect (OSTI)

Capabilities fact sheet that includes scope, core competencies and capabilities, and contact/web information for III-V High-Efficiency Multijunction Photovoltaics at the National Center for Photovoltaics.

Not Available

2011-06-01T23:59:59.000Z

450

The Market Value and Cost of Solar Photovoltaic Electricity Production  

E-Print Network [OSTI]

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

Borenstein, Severin

2008-01-01T23:59:59.000Z

451

Proceedings of the 29 IEEE Photovoltaics Specialists Conference (IEEE, 2002)  

E-Print Network [OSTI]

Proceedings of the 29 th IEEE Photovoltaics Specialists Conference (IEEE, 2002) THERMIONIC EMISSION-[2], APL93-[5]. #12;Proceedings of the 29 th IEEE Photovoltaics Specialists Conference (IEEE, 2002

Schiff, Eric A.

452

Workshop: Photovoltaics Research and Development Beyond SunShot...  

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

Photovoltaics Research and Development Beyond SunShot Workshop: Photovoltaics Research and Development Beyond SunShot May 22, 2014 2:30PM to 8:00PM PDT Pacific B This participatory...

453

Theoretical investigations of the electronic processes in organic photovoltaics  

E-Print Network [OSTI]

The design of more efficient organic photovoltaics starts with an increase in understanding of the fundamental processes related to organic photovoltaics, such as the charge separation processes at the organic/organic ...

Yost, Shane Robert

2013-01-01T23:59:59.000Z

454

Evaluation of the commercial potential of novel organic photovoltaic technologies  

E-Print Network [OSTI]

Photovoltaic cells based on organic semiconducting materials have the potential to compete with the more mature crystalline and thin film based photovoltaic technologies in the future primarily due to the expectation of ...

Barr, Jonathan (Jonathan Allan)

2005-01-01T23:59:59.000Z

456

Photovoltaic concentrator module improvements study  

SciTech Connect (OSTI)

This report presents results of a project to design and fabricate an improved photovoltaic concentrator module. Using previous work as a baseline, this study conducted analyses and testing to select major module components and design features. The lens parquet and concentrator solar cell were selected from the highest performing, available components. A single 185X point-focus module was fabricated by the project team and tested at Sandia. Major module characteristics include a 6 by 4 compression-molded acrylic lens parquet (0.737 m{sup 2} area), twenty-four 0.2 ohms-cm, FZ, p-Si solar cells (1.56 cm{sup 2} area) soldered to ceramic substrates and copper heat spreaders, and an aluminized steel housing with corrugated bottom. This project marked the first attempt to use prismatic covers on solar cells in a high-concentration, point-focus application. Cells with 15 percent metallization were obtained, but problems with the fabrication and placement of prismatic covers on these cells lead to the decision not to use covers in the prototype module. Cell assembly fabrication, module fabrication, and module optical design activities are presented here. Test results are also presented for bare cells, cell assemblies, and module. At operating conditions of 981 watts/m{sup 2} DNI and an estimated cell temperature of 65{degrees}C, the module demonstrated an efficiency of 13.9 percent prior to stressed environmental exposure. 12 refs., 56 figs., 7 tabs.

Levy, S.L.; Kerschen, K.A. (Black and Veatch, Kansas City, MO (United States)); Hutchison, G. (Solar Kinetics, Inc., Dallas, TX (United States)); Nowlan, M.J. (Spire Corp., Bedford, MA (United States))

1991-08-01T23:59:59.000Z

457

Biomonitoring for the photovoltaics industry  

SciTech Connect (OSTI)

Biomonitoring often is used as a method for estimating the dose to an individual. Therefore, a parameter of measurement, or biomarkers must be identified. The purpose of this paper is to give an overview of biomonitoring protocols for metals used in the photovoltaics industry. Special attention is given to areas that often are skimmed over, to gain insights into some of the problems that may arise when these tasks are carried out. Biological monitoring can be used to determine current human exposures to chemicals, as well as to detect past exposures, and the effects that these exposures may have on human health. It is used in conjunction with environmental monitoring to describe more completely worker`s exposures to, and absorption of, chemicals in the workplace. Biological specimens (e.g., blood, hair or urine) are analyzed for chemical agents, metabolites, or for some specific effect on the person (Lowry 1994). Biomonitoring can assess a workers exposure to industrial chemicals by all routes including skin absorption and ingestion. Although the methodology still is in its infancy, in cases where the procedures have been developed, it can be an invaluable component of an ongoing program of industrial hygiene monitoring. Like any technology, there are limitations to its effectiveness because of a lack of knowledge, contamination of specimens, and the introduction of errors.

Bernholc, N.M.; Moskowitz, P.D.

1995-07-01T23:59:59.000Z

458

Interdigitated photovoltaic power conversion device  

DOE Patents [OSTI]

A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device.

Ward, James Scott (Englewood, CO); Wanlass, Mark Woodbury (Golden, CO); Gessert, Timothy Arthur (Conifer, CO)

1999-01-01T23:59:59.000Z

459

Quantum well multijunction photovoltaic cell  

DOE Patents [OSTI]

A monolithic, quantum well, multilayer photovoltaic cell comprises a p-n junction comprising a p-region on one side and an n-region on the other side, each of which regions comprises a series of at least three semiconductor layers, all p-type in the p-region and all n-type in the n-region; each of said series of layers comprising alternating barrier and quantum well layers, each barrier layer comprising a semiconductor material having a first bandgap and each quantum well layer comprising a semiconductor material having a second bandgap when in bulk thickness which is narrower than said first bandgap, the barrier layers sandwiching each quantum well layer and each quantum well layer being sufficiently thin that the width of its bandgap is between said first and second bandgaps, such that radiation incident on said cell and above an energy determined by the bandgap of the quantum well layers will be absorbed and will produce an electrical potential across said junction.

Chaffin, R.J.; Osbourn, G.C.

1983-07-08T23:59:59.000Z

460

Interdigitated photovoltaic power conversion device  

DOE Patents [OSTI]

A photovoltaic power conversion device has a top surface adapted to receive impinging radiation. The device includes at least two adjacent, serially connected cells. Each cell includes a semi-insulating substrate and a lateral conductivity layer of a first doped electrical conductivity disposed on the substrate. A base layer is disposed on the lateral conductivity layer and has the same electrical charge conductivity thereof. An emitter layer of a second doped electrical conductivity of opposite electrical charge is disposed on the base layer and forms a p-n junction therebetween. A plurality of spaced channels are formed in the emitter and base layers to expose the lateral conductivity layer at the bottoms thereof. A front contact grid is positioned on the top surface of the emitter layer of each cell. A first current collector is positioned along one outside edge of at least one first cell. A back contact grid is positioned in the channels at the top surface of the device for engagement with the lateral conductivity layer. A second current collector is positioned along at least one outside edge of at least one oppositely disposed second cell. Finally, an interdigitation mechanism is provided for serially connecting the front contact grid of one cell to the back contact grid of an adjacent cell at the top surface of the device. 15 figs.

Ward, J.S.; Wanlass, M.W.; Gessert, T.A.

1999-04-27T23:59:59.000Z

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


461

Fluxes, Gaugings and Gaugino Condensates  

E-Print Network [OSTI]

Based on the correspondence between the N = 1 superstring compactifications with fluxes and the N = 4 gauged supergravities, we study effective N = 1 four-dimensional supergravity potentials arising from fluxes and gaugino condensates in the framework of orbifold limits of (generalized) Calabi-Yau compactifications. We give examples in heterotic and type II orientifolds in which combined fluxes and condensates lead to vacua with small supersymmetry breaking scale. We clarify the respective roles of fluxes and condensates in supersymmetry breaking, and analyze the scaling properties of the gravitino mass.

J. -P. Derendinger; C. Kounnas; P. M. Petropoulos

2006-02-10T23:59:59.000Z

462

Energy Policy 30 (2002) 477499 Photovoltaic module quality in  

E-Print Network [OSTI]

Energy Policy 30 (2002) 477­499 Photovoltaic module quality in the Kenyan solar home systems market purchases of clean decentralized photovoltaic technologies. Small amorphous-silicon modules dominate. This article analyzes market failure associated with photovoltaic module quality in the Kenyan SHS market

Kammen, Daniel M.

463

Network for Photovoltaic TechnologyNEED IMPACT STATEMENT  

E-Print Network [OSTI]

Network for Photovoltaic TechnologyNEED IMPACT STATEMENT INITIATIVE In early 2009, the Discovery graduate students have received several best poster and paper awards; A hub for photovoltaic research://nanohub.org/groups/PVWorkshop The NPT is becoming an international center for photovoltaic research to connect islands of excellence

Ginzel, Matthew

464

Integrating Photovoltaic Systems into Low-Income Housing Developments  

E-Print Network [OSTI]

Integrating Photovoltaic Systems into Low-Income Housing Developments: A Case Study on the Creation Integrating Photovoltaic Systems into Low-Income Housing Developments: A Case Study on the Creation of a New with integrating photovoltaic (PV) systems into existing financing models and the added cost to the new

465

A GUIDE TO PHOTOVOLTAIC (PV) SYSTEM DESIGN AND INSTALLATION  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION A GUIDE TO PHOTOVOLTAIC (PV) SYSTEM DESIGN AND INSTALLATION JUNE 2001 TO PHOTOVOLTAIC (PV) SYSTEM DESIGN AND INSTALLATION Prepared for: California Energy Commission Energy Technology installing photovoltaic (PV) systems under the Emerging Renewables Buydown Program. This is the first

466

Exploiting weather forecasts for sizing photovoltaic energy bids  

E-Print Network [OSTI]

1 Exploiting weather forecasts for sizing photovoltaic energy bids Antonio Giannitrapani, Simone for a photovoltaic (PV) power producer taking part into a competitive electricity market characterized by financial set from an Italian PV plant. Index Terms--Energy market, bidding strategy, photovoltaic power

Giannitrapani, Antonello

467

ORIGINAL ARTICLE Single ferroelectric-domain photovoltaic switch based  

E-Print Network [OSTI]

ORIGINAL ARTICLE Single ferroelectric-domain photovoltaic switch based on lateral BiFeO3 cells Ji serves as a basis for solid-state memory. This phenomenon can also yield an interesting photovoltaic imposed by the ferroelectric polarization vectors. Here, we demonstrate a single-domain photovoltaic

Jo, Moon-Ho

468

Direct mounted photovoltaic device with improved front clip  

SciTech Connect (OSTI)

The present invention is premised upon a photovoltaic assembly system for securing and/or aligning at least a plurality of vertically adjacent (overlapping) photovoltaic device assemblies to one another. The securing function being accomplished by a clip member that may be a separate component or integral to one or more of the photovoltaic device assemblies.

Keenihan, James R; Boven, Michelle; Brown, Jr., Claude; Gaston, Ryan S; Hus, Michael; Langmaid, Joe A; Lesniak, Mike

2013-11-05T23:59:59.000Z

469

Progress in Recycling of Retired Cadmium-Telluride Photovoltaic Modules  

E-Print Network [OSTI]

Progress in Recycling of Retired Cadmium- Telluride Photovoltaic Modules Postdoctoral: Wenming Wang-Talk Program July 21, 2005 #12;Recycling Retired Photovoltaic Modules to Valuable Products, Where Are We.M., Feasibility of Recycling of Cadmium-Telluride Photovoltaics, Presented at 134th TMS Annual Meeting &Exhibition

470

Design and Control of an Inverter for Photovoltaic Applications  

E-Print Network [OSTI]

Design and Control of an Inverter for Photovoltaic Applications by Søren Bækhøj Kjær Dissertation Assistant. He also taught photovoltaic systems for terrestrial- and space-applications (Power system quality, control and optimized design, for fuel cell and photovoltaic applications. He is currently

Hansen, René Rydhof

471

Direct mounted photovoltaic device with improved side clip  

DOE Patents [OSTI]

The present invention is premised upon a photovoltaic assembly system for securing and/or aligning at least a plurality of vertically adjacent photovoltaic device assemblies to one another. The securing function being accomplished by a clip member that may be a separate component or integral to one or more of the photovoltaic device assemblies.

Keenihan, James R; Boven, Michelle L; Brown, Jr., Claude; Eurich, Gerald K; Gaston, Ryan S; Hus, Michael

2013-11-19T23:59:59.000Z

472

Multi-level converters for three-phase photovoltaic applications  

E-Print Network [OSTI]

Multi-level converters for three-phase photovoltaic applications Renato M. Nakagomi, Ye Zhao, Brad a switching matrix device and photovoltaic (PV) panels. The approach is based on the dynamic reconfiguration photovoltaic PV panels. The number of PV panels that are connected to the load can be altered using dynamic

Lehman, Brad

473

Peer Effects in the Diffusion of Solar Photovoltaic Panels  

E-Print Network [OSTI]

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

Lee, Daeyeol

474

EXCURSION: enterprises in our region "Centrotherm photovoltaics AG"  

E-Print Network [OSTI]

EXCURSION: enterprises in our region "Centrotherm photovoltaics AG" 4th of November 2009 Invitation of a German enterprise called centrotherm photovoltaics AG in Blaubeuren. They are providers of technology and services for the photovoltaics industry. For organizational reasons we ask you to register for this visit

Pfeifer, Holger

475

MTL ANNUAL RESEARCH REPORT 2014 Energy 75 Energy: Photovoltaics, Energy  

E-Print Network [OSTI]

MTL ANNUAL RESEARCH REPORT 2014 Energy 75 Energy: Photovoltaics, Energy Harvesting, Batteries, Fuel.....................................79 Energy Level Modification in Lead Sulfide Quantum Dot Photovoltaics Through Ligand Exchange Crystalline silicon (c-Si) is the dominant material in the photovoltaic industry, yet silicon is expensive

Reif, Rafael

476

AEC PHOTOVOLTAIC TEST FACILITY FIRST YEAR TEST DATA James Krumsick  

E-Print Network [OSTI]

AEC PHOTOVOLTAIC TEST FACILITY FIRST YEAR TEST DATA James Krumsick Alternative Energy Consortium@uoregon.edu ABSTRACT Alternative Energy Consortium's Photovoltaic test facility (AEC PV) came on line in August, 2004 is to evaluate different photovoltaic products and to monitor the performance of these products under different

Oregon, University of

477

UncorrectedProof PROGRESS IN PHOTOVOLTAICS: RESEARCH AND APPLICATIONS  

E-Print Network [OSTI]

IN PHOTOVOLTAICS: RESEARCH AND APPLICATIONS Prog. Photovolt: Res. Appl. 2005; 13:111 Published online in Wiley the roof, photovoltaic arrays mounted on the roof will be exposed to the flames. The amount of cadmium which are the only ones in the market. Pieces of commercial CdTe photovoltaic (PV) modules, sizes 25 3

478

Glass Needs for a Growing Photovoltaics Industry Keith Burrows1  

E-Print Network [OSTI]

1 Glass Needs for a Growing Photovoltaics Industry Keith Burrows1 and Vasilis Fthenakis1,2* 1 Center for Life Cycle Analysis, Columbia University, New York, NY 2 Photovoltaics Environmental Research Center, Brookhaven National Lab, Upton, NY Abstract With the projected growth in photovoltaics

479

Photovoltaic Measurements in Single-Nanowire Silicon Solar Cells  

E-Print Network [OSTI]

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

Atwater, Harry

480

Photovoltaic cells made from conjugated polymers infiltrated into mesoporous titania  

E-Print Network [OSTI]

Photovoltaic cells made from conjugated polymers infiltrated into mesoporous titania Kevin M photovoltaic cells by infiltrating the conjugated polymer regioregular poly 3-hexylthiophene into films for electrons to travel to an electrode after electron transfer has occurred. The photovoltaic cells have

McGehee, Michael

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


481

Femtosecond Laser Ablation of Silicon: Nanoparticles, Doping and Photovoltaics  

E-Print Network [OSTI]

Femtosecond Laser Ablation of Silicon: Nanoparticles, Doping and Photovoltaics A thesis presented Laser Ablation of Silicon: Nanoparticles, Doping and Photovoltaics Eric Mazur Brian R. Tull Abstract irradiated surface layer to the grain boundaries. #12;iv Lastly, we measure the photovoltaic properties

Mazur, Eric

482

SOLAR RADIATION DURABILITY OF MATERIALS, COMPONENTS AND SYSTEMS FOR PHOTOVOLTAICS  

E-Print Network [OSTI]

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

Rollins, Andrew M.

483

Photovoltaic Pumping Systems A Comparison of Two Concepts  

E-Print Network [OSTI]

Photovoltaic Pumping Systems A Comparison of Two Concepts Hans Bloos, Markus Genthner, Detlev of Oldenburg two different concepts of photovoltaic pumping subsystems available on the market were Photovoltaic pumping (PVP) has established itself as a water lifting technique for remote areas in sun

Heinemann, Detlev

484

Organic Electronics and Photovoltaics CopyrightDaveWhite2008  

E-Print Network [OSTI]

ENERGY Organic Electronics and Photovoltaics Objective CopyrightDaveWhite2008 Organic electronics and photovoltaic technology are reaching critical mass with the establishment of a U.S. consortium and the recent an inte- grated suite of measurement methods to tie the electrical and photovoltaic performance of organic

485

CMOS Photovoltaic-cell Layout Configurations for Harvesting Microsystems  

E-Print Network [OSTI]

, and radiation, photovoltaic (PV) systems are appealing options. Still, chip-sized CMOS PV cells produce only exhaustible reservoirs of energy [2]. And of these, photovoltaic (PV) systems that draw energy from solar and the converter, which is why raising system efficiency SYS is so important. Fig. 1. Photovoltaic energy

Rincon-Mora, Gabriel A.

486

Fabrication and Characterization of Organic/Inorganic Photovoltaic Devices  

E-Print Network [OSTI]

reducing the cost for photovoltaic devices by introducing aPhotovoltaic Cell Materials Different materials display different efficiencies and have different costs.photovoltaic devices have recently drawn tremendous attention because of their technological advantages for actualization of large-area and cost

Guvenc, Ali Bilge

2012-01-01T23:59:59.000Z

487

Ellipsoidal and parabolic glass capillaries as condensers for x-ray microscopes  

SciTech Connect (OSTI)

Single-bounce ellipsoidal and paraboloidal glass capillary focusing optics have been fabricated for use as condenser lenses for both synchrotron and tabletop x-ray microscopes in the x-ray energy range of 2.5-18 keV. The condenser numerical apertures (NAs) of these devices are designed to match the NA of x-ray zone plate objectives, which gives them a great advantage over zone plate condensers in laboratory microscopes. The fabricated condensers have slope errors as low as 20 {mu}rad rms. These capillaries provide a uniform hollow-cone illumination with almost full focusing efficiency, which is much higher than what is available with zone plate condensers. Sub-50 nm resolution at 8 keV x-ray energy was achieved by utilizing this high-efficiency condenser in a laboratory microscope based on a rotating anode generator.

Zeng Xianghui; Duewer, Fred; Feser, Michael; Huang, Carson; Lyon, Alan; Tkachuk, Andrei; Yun Wenbing

2008-05-01T23:59:59.000Z

488

A solar photovoltaic power system for use in Antarctica  

SciTech Connect (OSTI)

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.

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

1993-12-01T23:59:59.000Z

489

Apparatus for encapsulating a photovoltaic module  

DOE Patents [OSTI]

The subject inventions concern various photovoltaic module designs to protect the module from horizontal and vertical impacts and degradation of solar cell efficiency caused by moisture. In one design, a plurality of panel supports that are positioned adjacent to the upper panel in a photovoltaic module absorb vertical forces exerted along an axis perpendicular to the upper panel. Other designs employ layers of glass and tempered glass, respectively, to protect the module from vertical impacts. A plurality of button-shaped channels is used around the edges of the photovoltaic module to absorb forces applied to the module along an axis parallel to the module and direct moisture away from the module that could otherwise penetrate the module and adversely affect the cells within the module. A spacer is employed between the upper and lower panels that has a coefficient of thermal expansion substantially equivalent to the coefficient of thermal expansion of at least one of the panels.

Albright, Scot P. (El Paso, TX); Dugan, Larry M. (Boulder, CO)

1995-10-24T23:59:59.000Z

490

Photovoltaics: Contract lists, fiscal year 1992  

SciTech Connect (OSTI)

US DOE`s Photovoltaics Program has helped photovoltaic technologies evolve from materials and concepts in laboratories to competitive products rolling off automated assembly lines. The program is working to expand industrial capacity while continuing basic and applied technology R and D. This document is a tabulation of photovoltaics R and D that were begun, continued, or completed during this period. National laboratories or industrial, academic, and nonprofit research institutions perform the RR and D activities. The document is organized first by directing organization, then by project title and individual task. Each listing provides the name of contractor, period of performance, funding, objectives, accoplishments, and FY 1993 milestones. An index of contractors is included. (DLC)

Not Available

1993-03-01T23:59:59.000Z

491

Photovoltaic module with light reflecting backskin  

DOE Patents [OSTI]

A photovoltaic module comprises electrically interconnected and mutually spaced photovoltaic cells that are encapsulated by a light-transmitting encapsulant between a light-transparent front cover and a back cover, with the back cover sheet being an ionomer/nylon alloy embossed with V-shaped grooves running in at least two directions and coated with a light reflecting medium so as to provide light-reflecting facets that are aligned with the spaces between adjacent cells and oriented so as to reflect light falling in those spaces back toward said transparent front cover for further internal reflection onto the solar cells, whereby substantially all of the reflected light will be internally reflected from said cover sheet back to the photovoltaic cells, thereby increasing the current output of the module. The internal reflector improves power output by as much as 67%.

Gonsiorawski, Ronald C. (Danvers, MA)

2007-07-03T23:59:59.000Z

492

Photovoltaic energy: Contract list, fiscal year 1990  

SciTech Connect (OSTI)

The federal government has conducted the National Photovoltaics Program since 1975. Its purpose is to provide focus, direction, and funding for the development of terrestrial photovoltaic technology as an energy option for the United States. In the past, a summary was prepared each year to provide an overview of the government-funded activities within the National Photovoltaics Program. Tasks conducted in-house by participating national laboratories or under contract by industrial, academic, and other research institutes were highlighted. This year's document is more concise than the summaries of previous years. The FY 1990 contract overview comprises a list of all subcontracts begun, ongoing, or completed by Sandia National Laboratory or the Solar Energy Research Institute during FY 1990 (October 1, 1989, through September 30, 1990). Under each managing laboratory, projects are listed alphabetically by project area and then by subcontractor name.

Not Available

1991-07-01T23:59:59.000Z

493

Condensate System Troubleshooting and Optimization  

E-Print Network [OSTI]

by comparing actual vs. predicted pH at key plant locations. Examine a condensate corrosion inhibitor and its impact on a particular system at different dosages. Optimize dosage of a particular condensate corrosion inhibitor to attain a desired pH range... the existing amine program was not protecting the system and corrosion was occurring. By studying these problem areas in greater detail, types of amines and feed points were recom mended which further reduced corrosion in these areas. Table 2 shows...

Jenkins, B. V.

1983-01-01T23:59:59.000Z

494

Experimental studies of Bose-Einstein condensation  

E-Print Network [OSTI]

of the condensate, and of its coherence properties. 1998 Optical Society of America OCIS codes: (020.0020) Atomic-Einstein Condensation of Lithium: Observation of Limited Condensate Number", Phys. Rev. Lett. 78, 985 (1997). 4. K. Ketterle, "Bose-Einstein condensation of a weakly-interacting gas", in Ultracold Atoms and Bose

Hart, Gus

495

Sandia National Laboratories: Concentrated Photovoltaics  

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

Generator Modeling Radar Friendly Blades Special Programs Techno-Economic Modeling, Analysis, and Support Analysis, Modeling, Cost of Energy, and Policy Impact: Wind Vision 2014...

496

Photovoltaic industry progress through 1984  

SciTech Connect (OSTI)

The growth of the US photovoltaics (PV) industry over the past decade has been impressive. First designed to provide power for satellites using high-cost production techniques, PV is now the economical choice in many remote terrestrial applications. The remarkable growth of PV in terms of quality of cells and modules, production techniques, and system design, was initiated by a cooperative effort of the US Government and the domestic PV manufacturers. European and Japanese firms entered the PV industry later, but are also growing rapidy. The Europeans continue to supply PV systems for village electrification and water pumping to many Third World countries. The Japanese have been developing the amorphous silicon (A-Si) technology by expanding its use in consumer goods. The world PV industry saw dramatic changes in industry ownership and in the emphasis on developing new and improved technology during 1984. The objective of this report is to present information on the developments of the world PV industry and focuses on developments occurring in 1984. Information is presented on a regional basis (US, Europe, Japan, other) to avoid disclosing company-confidential data. All information was gleaned from several sources, including a review of the technical literature and direct contacts with PV manufacturers. Prior to publishing the regional totals, all numbers were compared with those of other sources. The information contained in this report is prepared for use by the Department of Energy for their use in long-term R and D planning. However, this information should also be of interest by PV manufacturers and to those who may be contemplating entering the PV market. PV shipments for 1984, government supports for PV, and various PV market sectors are discussed.

Watts, R.L.; Smith, S.A.; Dirks, J.A.

1985-04-01T23:59:59.000Z

497

Multijunction photovoltaic device and fabrication method  

DOE Patents [OSTI]

A multijunction photovoltaic device includes first and second amorphous silicon PIN photovoltaic cells in a stacked arrangement. An interface layer, composed of a doped silicon compound, is disposed between the two cells and has a lower bandgap than the respective n- and p-type adjacent layers of the first and second cells. The interface layer forms an ohmic contact with the one or the adjacent cell layers of the same conductivity type, and a tunnel junction with the other of the adjacent cell layers. The disclosed device is fabricated by a glow discharge process.

Arya, Rajeewa R. (Jamison, PA); Catalano, Anthony W. (Furlong, PA)

1993-09-21T23:59:59.000Z

498

Photovoltaic applications for remote-island needs  

SciTech Connect (OSTI)

Electric power supply options available to many of the central and south Pacific island governments are severely constrained by remoteness, limited infrastructures, a corrosive natural environment, and the high delivered costs of many conventional energy sources. Photovoltaic energy systems offer a currently available, practical, and cost-effective source of electricity for many stand-alone applications in remote areas of the Pacific. Photovoltaic system definitions and cost analyses are provided for selected applications in the Republic of Palau, the Federated States of Micronesia, the Republic of the Marshall Islands, and the Territory of American Samoa.

Schaller, D.A.

1983-01-01T23:59:59.000Z

499

Superior Valley photovoltaic power processing and system controller evaluation  

SciTech Connect (OSTI)

Sandia National Laboratories, sponsored by the US Department of Energy`s Office of Energy Management, conducts the photovoltaic balance-of-system program. Under this program, Sandia supports the Department of Defense Strategic Environmental Research Development Plan, SERDP, which is advancing the use of photovoltaics in operational DoD facilities. This report details the acceptance testing of the first of these photovoltaic hybrid systems: the Superior Valley photovoltaic-diesel hybrid system. This is the first of several photovoltaic installations for the Department of Defense. The system hardware tested at Sandia included an inverter, maximum power trackers, and a system controller.

Bonn, R.; Ginn, J.; Zirzow, J.; Sittler, G.

1995-11-01T23:59:59.000Z

500

Instability of condensate lm and capillary blocking in small-diameter-thermosyphon condensers  

E-Print Network [OSTI]

Instability of condensate ®lm and capillary blocking in small-diameter-thermosyphon condensers H 1998 Abstract Instability of the condensate ®lm in a small-diameter-tube condenser was investigated- namic force or surface tension, the inner surface of the annular condensate ®lm is inherently unstable

Zhao, Tianshou