Hybrid Conversion System Patents (Class 136/248)
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Publication number: 20090223511Abstract: A photovoltaic/thermal solar panel is presented which contains no glazing above the photovoltaic array. The absence of glazing allows the photovoltaic cells to operate at a lower temperature and therefore at a higher efficiency. In addition, the absence of glazing allows the present invention PV/T panel to be used to provide nighttime cooling for a building. The panel is constructed by adhering an aluminum heat transfer plate to the rear of the PV array in the panel using a silicone adhesive. PEX tubing is inserted into channels integrally formed into the back of the heat transfer plate again using silicone or other heat-conductive compound.Type: ApplicationFiled: March 4, 2008Publication date: September 10, 2009Inventor: Edwin B. Cox
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Publication number: 20090217962Abstract: An energy generating device for lighter-than-air vehicles having a gas impervious outer flexible fabric including a flexible photovoltaic array located on the outer layer of the gas impervious fabric; a thermocouple array located between the photovoltaic cells and the gas impervious fabric; a thermally conductive layer or heat spreader between the thermocouple array and the photovoltaic array and between the thermocouple array and the gas impervious flexible fabric; an electrically conductive means connected to said thermocouple array for drawing electrical power away from said thermocouple array; and an electrical load, such as an electrical storage device or a device that consumes electricity, for drawing electricity from the thermocouple array.Type: ApplicationFiled: February 29, 2008Publication date: September 3, 2009Applicant: LOCKHEED MARTIN CORPORATIONInventor: Paul E. Liggett
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Publication number: 20090199892Abstract: A solar collector system (10, 30, 82, 82?, 171) includes a photovoltaic means (24, 174) for conversion of solar energy into electrical energy and a pathway/conduit (22, 94, 94?, 94?) for thermal transfer fluid which is in thermal communication with the photovoltaic means (24, 174). A shaped solar concentrator surface (12, 58, 58?, 173) may have at least one focus and the pathway/conduit (22, 94, 94?, 94?) may be disposed at the focus. The shaped solar concentrator surface (12, 58, 58?, 173) may be comprised of roof cladding material (58?) which is integrally formed to support the conduit (94) at the focus. Alternatively, the concentrator surface (173) may be disposed in a trough of corrugated roof cladding, with a transparent or translucent cover (98) over the top. The covers may be domed covers having an axis of curvature which substantially aligns with the roof gradient. A roofing structure comprises intersecting first (48) and second (50) roofing planes.Type: ApplicationFiled: May 31, 2006Publication date: August 13, 2009Inventor: Roger A. Farquhar
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Publication number: 20090199893Abstract: In various embodiments described herein, a device comprising a light collector optically coupled to a photocell is described. The device further comprises a light turning film or layer comprising volume or surface diffractive features or holograms. Light incident on the light collector is turned by volume or surface diffractive features or holograms that are reflective or transmissive and guided through the light collector by multiple total internal reflections. The guided light is directed towards a photocell. In various embodiments, the light collector is thin (e.g., less than 1 millimeter) and comprises, for example, a thin film. The light collector may be formed of a flexible material.Type: ApplicationFiled: February 11, 2009Publication date: August 13, 2009Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Ion Bita, Russell Wayne Gruhlke, Gang Xu, Marc Maurice Mignard
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Publication number: 20090194145Abstract: A high-efficiency, small-scale, combined heat and power, concentrating solar energy system (200), designed specifically for residential and other relatively low-power applications, rendering it cost-effective and economically viable. Two-axis tracking of a dish-like reflector (10) of between 1 and 2 meters in aperture ensures very high concentrating ratios of between 200 and 8-suns or even higher. In consequence very high coolant outlet temperatures, of 120-180° C. may be reached at the outlet of the collector coolant, which may be oil, gas, or pressurized water. The high coolant temperatures are advantageous because they may be used for air-conditioning. The high concentration is advantageous because the efficiency of the photo_voltaic cells is improved with higher concentration. The overall efficiency is greater than 60%.Type: ApplicationFiled: May 12, 2004Publication date: August 6, 2009Inventors: Abraham Kribus, Nathan-Arie Levy, Daniel Kaftori
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Method and apparatus for arranging multiple flat reflector facets around a solar cell or solar panel
Publication number: 20090194146Abstract: A system and method of arranging multiple flat reflective facets around solar cells within a solar panel, or around a standard solar panel to increase the amount of light striking the solar cells or panel. The present invention in the preferred embodiment uses multiple reflector facets arranged to form an inverted pyramid shell where the apex of the pyramid is removed and replaced by a solar cell or panel. Accordingly each flat reflective facet has an isosceles trapezoid shape and has its shorter parallel side located adjacent and at a 120 degree angle to the solar cell or panel. This geometry ensures uniform illumination of the solar cell provided the reflector is approximately the same width as the solar cell; such uniform illumination may be especially helpful for PV generating applications. An alternate embodiment employs only three flat reflective facets, rather than four, around a standard solar panel.Type: ApplicationFiled: February 6, 2008Publication date: August 6, 2009Inventor: Daniel Simon -
Publication number: 20090173376Abstract: The present invention is a desiccant system for controlling moisture in a solar collector. The desiccant system has a desiccant bed enclosed within a housing, and is thermally coupled to the solar collector as well as being fluidly coupled to it through an orifice. Waste heat from the solar collector is conducted to the desiccant system and is used to regenerate the desiccant bed. The desiccant system includes moisture barriers which cause moisture from the desiccant to preferentially be released to the external environment rather than entering the solar collector.Type: ApplicationFiled: April 16, 2008Publication date: July 9, 2009Applicant: SOLFOCUS, INC.Inventors: Mark Spencer, Stephen Askins
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Publication number: 20090159115Abstract: A light concentrating module for transforming light into at least one of electrical and thermal energy is provided. The light concentrating module may be coupled in flow communication with a fluid conversion module and include a primary optical element that has a reflective surface with a plurality of contoured sections. Each contoured section is shaped to reflect light that impinges the contoured section toward a corresponding focal region. The module may also have a receiver system that includes a plurality of energy conversion members positioned proximate to corresponding focal regions. The receiver system also has a working fluid passage for carrying a working fluid that absorbs the thermal energy. The working fluid can be conveyed away from the receiver system through a mounting post that holds the receiver system. In addition, the module may also generate electricity.Type: ApplicationFiled: December 21, 2007Publication date: June 25, 2009Applicant: Solergy, Inc.Inventors: Yoav Banin, Gino D'Ovidio, Giovanni Lanzara
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Publication number: 20090145474Abstract: A solar energy collector produces electricity and heat using an optically transparent vessel containing one or more photovoltaic cells and a liquid that substantially fills the vessel. The vessel has a top with a flat exterior surface and a bottom with a concave exterior surface that is coated on the outside with a reflective material. Solar radiation traveling through the top of the vessel into the liquid and through the bottom strikes the reflective material on the outside of the vessel and is reflected back through the bottom, into the liquid and to a focal line adjacent to the interior surface of the top. Cooled liquid is fed into the vessel through an entry port and heated liquid is removed through an exit port. One or more photovoltaic solar cells are located adjacent to the interior surface of the top aligned with the focal line.Type: ApplicationFiled: December 8, 2007Publication date: June 11, 2009Inventor: Yi Pang
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Publication number: 20090090410Abstract: An improved method for the design and development of high performance hybrid devices having biological and nonbiological components. The biological component is used in hybrid constructs that may be nanostructures, given the small size of the biological parts. In one specific embodiment, chlorosomes of Chloroflexus aurantiacus (C. aurantiacus) enhance performance of a silicon photovoltaic cell. C. aurantiacus, strain J-10-f1, has the A.T.C.C. designation number 29366, having been deposited in July, 1976. Its chlorosomes are harvested and positioned in light communicating relation to a photoactive semiconductor. The chlorosomes react to light of a first wavelength by emitting light at a second wavelength to which the semiconductor electrically responds.Type: ApplicationFiled: June 26, 2008Publication date: April 9, 2009Inventors: Jeffrey T. LaBelle, Vincent B. Pizziconi
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Publication number: 20090078304Abstract: A system, method and apparatus are disclosed for abating charge accumulation on a photovoltaic array. In one embodiment, the method includes arranging a portion of a photovoltaic array so that the portion of the photovoltaic array operates above a ground potential; converting solar energy into electrical energy with the photovoltaic array, wherein the portion of the photovoltaic array is predisposed to accumulate a charge on a surface of the portion of the photovoltaic array while the solar energy is converted to electrical energy; and abating charge accumulation on the surface of the portion of the photovoltaic array that operates above a ground potential.Type: ApplicationFiled: September 26, 2007Publication date: March 26, 2009Inventors: Jack Arthur Gilmore, Eric Seymour
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Publication number: 20090071529Abstract: Methods and systems for extracting energy from a heat source using photonic crystals with defect cavities generally comprise a photonic crystal, a cavity, and a converter. The photonic crystal is responsive to a heat source and generates an electromagnetic beam in response to incidence with the heat source. The photonic crystal exhibits a band gap such that wavelengths within the band gap are substantially confined within the photonic crystal. The cavity is substantially within the crystal and is responsive to the electromagnetic beam such that the cavity transmits the electromagnetic beam to a specified location. The converter is substantially collocated with the specified location and extracts energy in response to incidence with the electromagnetic beam.Type: ApplicationFiled: September 11, 2008Publication date: March 19, 2009Inventors: Delmar L. Barker, William R. Owens, Abram G. Young
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Publication number: 20090065046Abstract: The present invention discloses a system for a retrofitting a photovoltaic energy collector, by coupling a thermal energy absorbing working fluid casing for flowing heat out to a heat sink The solar module is cooled by the working fluid transferring unproductive heat away from the photovoltaic array and into an exterior heat sink via the cooling fluid circuit, thus making the photovoltaic array more efficient, while adding another energy source. The retrofitting can be done at the consumers convenience, discretion and site, overcoming the current requirement forcing the consumer to decide on one solar technology over another with competing needs.Type: ApplicationFiled: September 12, 2007Publication date: March 12, 2009Inventor: Roger DeNault
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Publication number: 20090050193Abstract: Provided is a photophysicochemical cell including a liquid phase medium of a fuel such as a redox liquid, etc.Type: ApplicationFiled: March 9, 2006Publication date: February 26, 2009Applicant: Ibaraki UniversityInventor: Masao Kaneko
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Patent number: 7487771Abstract: A solar panel frame assembly including a plurality of corner pieces and side extension pieces is disclosed. Each corner piece and side extension has an inner and outer side which terminate at their respective ends. The pieces interlock with each other at their ends to form a frame around the periphery of a solar panel. Adjacent corner pieces also interlock with each other along their outer sides so that a plurality of adjacent framed solar panels can be connected together to form an array of framed solar panels. A method for forming an array of connected and framed solar panels is also disclosed.Type: GrantFiled: September 26, 2005Date of Patent: February 10, 2009Assignee: ImaginIt, Inc.Inventors: Patrina Eiffert, Annett Eiffert, Martin Rohm
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Publication number: 20090020151Abstract: An apparatus for converting Direct Current (DC) to Alternating Current (AC), comprising a plurality of inverters, each inverter having a separate DC input adapted to be coupled to at least one solar cell defining an area of a solar panel.Type: ApplicationFiled: July 16, 2007Publication date: January 22, 2009Applicant: PVI Solutions, Inc.Inventor: Martin Fornage
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Publication number: 20090014058Abstract: Provided are easy-to-install rooftop photovoltaic systems. One rooftop photovoltaic system includes a roofing material piece, a photovoltaic module disposed on the roofing material piece and an inverter configured to convert DC from the photovoltaic module into AC. Another rooftop photovoltaic system includes at least one active unit including one or more photovoltaic modules each including photovoltaic cells shaped as shingles to provide a roofing material appearance; and one or more inactive units having the roofing material appearance.Type: ApplicationFiled: July 13, 2007Publication date: January 15, 2009Inventors: Steven CROFT, William Sanders, Ben Tarbell
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Publication number: 20090014057Abstract: One photovoltaic module includes a plurality of photovoltaic cells and at least one device selected from a sensor, a data storage device and an indicator. Another photovoltaic module includes a plurality of photovoltaic cells and a flexible circuit configured to act as an antenna for electromagnetic radiation. Methods of using such photovoltaic modules are also disclosed.Type: ApplicationFiled: July 13, 2007Publication date: January 15, 2009Inventors: Steven Croft, Randy Dorn, Ilan Gur, Bruce Hachtmann, Dennis Hollars, Shefali Jaiswal, Puthur Paulson, David Pearce, Kannan Ramanathan, William Sanders, Ben Tarbell
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Publication number: 20090014053Abstract: The invention relates to a method and a device for a concentrator/solar collector for splitting solar radiation into various spectral colours by means of colour-selective mirrors, and for concentrating the same onto a plurality of semiconductor-photovoltaic cells optimised for various light colours. The inventive device is used to convert the energy of the solar radiation into an electrical current and heat with a high efficiency.Type: ApplicationFiled: January 29, 2005Publication date: January 15, 2009Inventor: Detlef Schulz
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Publication number: 20090014059Abstract: A thermophotovoltaic electricity generating system having a heat source generating a thermal emission having a plurality of wavelengths. There is an optical filter filtering the thermal emission into a filtered emission. There is also a thermophotovoltaic device receiving the filtered emission. The thermophotovoltaic device is configured to absorb the thermal emission converting the thermal emission into electricity.Type: ApplicationFiled: July 9, 2007Publication date: January 15, 2009Inventors: Rakesh Radhakrishnan, Craig R. Walker, James R. Strife, James R. Irish
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Patent number: 7476607Abstract: An object of the present invention is to provide a photovoltaic cell that demonstrates a superior photoelectric conversion function. The present invention relates to a photovoltaic cell comprising a semiconductor electrode, an electrolyte and a counter electrode, wherein (1) the semiconductor electrode contains an oxide semiconductor layer having photocatalytic activity, (2) the oxide semiconductor layer contains secondary particles in which primary particles comprising a metal oxide are aggregated, (3) the average particle diameter of the primary particles is from 1 nm to 50 nm, and the average particle diameter of the secondary particles is from 100 nm to 10 ?m, and (4) the photovoltaic cell generates electromotive force by radiating light of a wavelength substantially equal to the average particle diameter of the secondary particles onto the semiconductor electrode.Type: GrantFiled: June 8, 2006Date of Patent: January 13, 2009Assignee: Panasonic CorporationInventors: Yuka Yamada, Nobuyasu Suzuki, Yasunori Morinaga, Hidehiro Sasaki
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Publication number: 20090007959Abstract: A multi-leaf solar energy supplying apparatus includes an energy converting module and an electrical power storing module. The energy converting module includes a solar energy board having a plurality of leaves for converting solar energy into electrical power. The electrical power storing module is electrically connected with the energy converting module for receiving electrical power to charge a secondary battery. Therefore, the secondary battery provides at least one output voltage to an application system. Furthermore, the energy converting module further includes at least one first power transmission port. When the energy converting module is separated from the electrical power storing module, the energy converting module is connected with the application system via the first power transmission port and provides a voltage to the application system. Thereby, the goals of charging and supplying power via solar power, and offering a power source that can be used anywhere are achieved.Type: ApplicationFiled: July 5, 2007Publication date: January 8, 2009Inventors: Wan-Hua Wu, Shih-Wei Tung, Hsin-Wen Lin
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Publication number: 20080314438Abstract: An energy device includes a solar concentrator that concentrates at least 20 suns on a predetermined spot; a solar cell positioned on the predetermined spot to receive concentrated solar energy from the solar concentrator; and a water heater pipe thermally coupled to the solar cell to remove heat from the solar cell.Type: ApplicationFiled: June 20, 2007Publication date: December 25, 2008Inventors: Alan Anthuan Tran, Bao Tran
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Publication number: 20080283116Abstract: A light energy conversion (LEC) system includes a fluid circuit having a working fluid flowing therethrough and a plurality of light concentrating (LC) modules for converting light energy into electrical energy and for transforming the light energy into thermal energy. The LC modules including a first LC module coupled in series with a second LC module along the fluid circuit. The working fluid absorbs thermal energy while flowing through the first and second LC modules. At least the first LC module includes a light concentrating optical element that is configured to direct light energy toward a focal region and a receiver held at the focal region. The receiver includes a housing having a chamber that holds an energy conversion member. The energy conversion member transforms light energy received from the optical element into electrical and thermal energy.Type: ApplicationFiled: May 1, 2008Publication date: November 20, 2008Applicant: Solergy, Inc.Inventors: Yoav Banin, Gino D'Ovidio, Giovanni Lanzara
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Publication number: 20080256953Abstract: A solar energy turbine includes solar energy trap (1110) having a chamber with an inlet port (12), such that solar energy (13) entering the chamber through the inlet port is absorbed and reflected within the chamber means until substantially all the solar energy is absorbed by the chamber. Preferably, the inlet port is arranged to cause photons of the solar energy entering the chamber to circulate substantially in a single direction within the chamber until absorbed, such that on re-passing the inlet port substantially no photons emerge from the inlet port. The solar energy turbine includes a heat exchanger (1150, 1160, 1170) for extracting energy from the solar energy trap to drive a turbine (1120).Type: ApplicationFiled: November 22, 2005Publication date: October 23, 2008Inventors: Evangelos Arkas, Nicholas Arkas
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Publication number: 20080245402Abstract: A SOLAR TRACKER FOR THERMAL AND PHOTOVOLTAIC PANELS WITH A FORCED AIR SYSTEM, APPLICABLE TO BUILDINGS, with a panel-carrying framework on a dome, whose interior features a heat accumulator, acting as a column; attached to the base of this there is a fan and radiator capable of blowing treated air towards the apartments, it being installed over the stairwell, which acts as a carriage duct, also acting as a fire protection system as it creates centrifugal radial flows, expelling harmful gases on opening doors and windows. The framework tilts on two axes of a spider joint located between two yokes, one of these fixed on the column and the other tilting, this last supporting the framework. Four servo-cylinders, two per axis, cause it to be directed towards the sun. The rows of the framework, arranged on different levels, in the shape of a stepped pyramid, support juxtaposed thermal and photovoltaic panels, it being possible to direct those appropriate towards the sun while the others are shaded.Type: ApplicationFiled: January 31, 2008Publication date: October 9, 2008Inventor: Manuel Lahuerta Romeo
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Publication number: 20080245403Abstract: Embodiments for methods and apparatuses for solar heating are disclosed. One solar heating apparatus includes an insulating layer adjacent to an exterior of a structure. A heat transfer plate is adjacent to the insulating layer. A fluid conduit is adjacent to the heat transfer plate. The heat transfer plate is thermally connected to the fluid conduit for transferring heat from the heat transfer plate to fluid within the fluid conduit. A weather exposed layer is thermally connected to the heat transfer plate.Type: ApplicationFiled: April 5, 2008Publication date: October 9, 2008Inventors: Bradley Owen Stimson, Marc O'Donnell Schweitzer
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Publication number: 20080236652Abstract: Means to use and combine methods of thermal engineering, plasmonics, photonics, electronics, photovoltaics, optical transfer, heat transport, light transport, catalysis and chemical reactions individually or in any combination for the enhancement or generation of solar, optical, electrical or any form of energy. The present disclosure further concerns a means to use at least a form of electromagnetic excitation or light-matter interactions in a structure or material having one or more addressable frequencies to generate the exchange of thermal, kinetic, electronic or photonic energy.Type: ApplicationFiled: December 18, 2007Publication date: October 2, 2008Inventors: Anthony Defries, Mark Brongersma
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Publication number: 20080230111Abstract: A method for generating energy from concentrated solar radiation by photovoltaic and thermally useable solar cells in which the absorbed heat radiation evaporates a fluid which drives a turbine connected to a generator.Type: ApplicationFiled: November 14, 2006Publication date: September 25, 2008Applicant: DURLUM-LEUCHTEN GMBH LICHTTECHNISCHE SPEZIALFABRIKInventor: Jurgen Uehlin
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Publication number: 20080178927Abstract: An apparatus for converting light energy into electric energy has a concentrator with at least a first and second wall. The walls are made at least in part of a material that reflects light. The concentrator has an opening defined by the walls, and is operable to admit light energy into an interior portion of the apparatus. An elongated photovoltaic module is disposed between the walls. The module has a substrate, and a photovoltaic covering disposed on the substrate. The module can generate electric energy from light energy that directly strikes the module and light energy redirected from the concentrator to the module. The walls are substantially the shape of an involute of the module. The walls are limited to the height of the topmost portion of the elongated photovoltaic module. The module is disposed upon or above a joining of the walls.Type: ApplicationFiled: June 5, 2007Publication date: July 31, 2008Inventors: Thomas Brezoczky, Chris M. Gronet, Benyamin Buller
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Publication number: 20080173345Abstract: An electrical generating device combines solar cells and piezoelectric generators into a single generating system, configured in such a manner that the solar cells or the solar cell supporting structures act on the piezoelectric generators, resulting in an electrical generating system that can produce electricity from both solar energy and from the force of the wind.Type: ApplicationFiled: January 19, 2007Publication date: July 24, 2008Inventors: Samuel Cabot COCHRAN, Teresita COCHRAN
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Patent number: 7398778Abstract: A furnace in combination with a heat pump and solar panels for providing domestic hot water and forced hot or cooled air utilizing heat pump achieved efficiency levels in an on-demand and unlimited domestic hot water, heating and air conditioning system. In heating mode, recycled air acquires heat from the heat pump's condenser coil and transfers this heat to the on-demand hot water.Type: GrantFiled: July 5, 2005Date of Patent: July 15, 2008Assignee: Air Hydronic Product Solutions, Inc.Inventor: Stewart R. Kaiser
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Publication number: 20080163923Abstract: An organic light emitting display not only display images but also generates power by employing a dye-sensitized solar cell as a polarizing film of the organic light emitting display. The organic light emitting display includes: a substrate; an Organic Light Emitting Diode (OLED) including an anode arranged on an upper surface of the substrate, an organic thin film arranged on an upper surface of the anode, and a cathode arranged on an upper surface of the organic thin film; and a solar cell layer arranged on an upper surface of the cathode.Type: ApplicationFiled: July 11, 2007Publication date: July 10, 2008Inventors: Hyehyang Park, Byoungdeog Choi
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Publication number: 20080163922Abstract: A parabolic primary mirror (10) has a concave specular surface (12) that is constructed and positioned to receive solar energy and focus it towards a focal point. A secondary mirror (14) having a convex specular surface (16) is constructed and positioned to receive focused solar energy from the primary mirror and focus it onto an annular receiver (18). The annular receiver (18) may include an annular array of optical elements (100) constructed to receive solar energy from the secondary specular surface (14) and focus it onto a ring of discreet areas. A ring of solar-to-electrical conversion units are positioned on the ring of discreet areas. A sun sensor that allows accurate solar tracking to keep mirror system aligned with the sun.Type: ApplicationFiled: January 8, 2007Publication date: July 10, 2008Inventors: William E. Horne, Mark D. Morgan
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Publication number: 20080149167Abstract: The present invention discloses an analog photovoltaic power circuit, comprising: a photovoltaic device group for receiving photo energy to generate an input voltage; a power stage circuit for converting the input voltage to an output voltage; an optimum voltage estimation circuit for receiving a predetermined voltage and estimating an optimum voltage according to a direction of variation of the input voltage and a direction of variation of the power generated by the photovoltaic device group; and an analog comparison and control circuit for comparing the optimum voltage with the input voltage, to thereby control the operation of the power stage circuit.Type: ApplicationFiled: July 16, 2007Publication date: June 26, 2008Inventor: Jing-Meng Liu
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Publication number: 20080149166Abstract: A light conversion device and high-intensity, solid-state light source utilize wavelength conversion elements with a thermal conductivity greater than 1 watt per meter per degree Kelvin (W/m-K). Exemplary materials that have high thermal conductivity include monocrystalline solids, polycrystalline solids, substantially densified ceramic solids, amorphous solids or composite solids. The light conversion device and high-intensity, solid-state light source have at least one heat sink that is in direct thermal contact with the wavelength conversion element. The heat sink quickly dissipates heat generated within the wavelength conversion element in order to prevent the wavelength conversion element from overheating and undergoing thermal quenching of the wavelength conversion and light emission.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Inventors: Karl W. Beeson, Scott M. Zimmerman, Richard L. Ross, William R. Livesay
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Publication number: 20080135089Abstract: In some embodiments, the present invention is directed to compositionally-graded hybrid nanostructure-based photovoltaic devices comprising elongated semiconductor nanostructures and an amorphous semiconductor single layer with continuous gradation of doping concentration across its thickness from substantially intrinsic to substantially conductive. In other embodiments, the present invention is directed to methods of making such photovoltaic devices, as well as to applications which utilize such devices (e.g., solar cell modules).Type: ApplicationFiled: November 15, 2006Publication date: June 12, 2008Applicant: General Electric CompanyInventors: Loucas Tsakalakos, James Neil Johnson, Venkatesan Manivannan
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Publication number: 20080128017Abstract: This invention concerns solar energy collection systems, especially systems that concentrate direct sunlight and then collect the radiant energy. This invention is of particular use for providing heat and power for buildings and industrial processes. A solar energy collection system comprising: a solar energy receiver; and a solar energy directing system to direct sunlight onto said solar energy receiver; wherein said solar energy directing system comprises a set of mirrors, each mirror having a moveable axis and comprising a plurality of facets, and wherein the facets of each mirror are configured to direct incoming sunlight to focus substantially at said receiver when said mirror axes are directed towards said receiver.Type: ApplicationFiled: June 16, 2005Publication date: June 5, 2008Applicant: HELIODYNAMICS LIMITEDInventor: Graham Paul Ford
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Publication number: 20080121271Abstract: A photovoltaic device includes three or more solar cells which are layered on top of each other, at least one of quantum dots and quantum dashes, and first and second conductors. The quantum dots or quantum dashes are incorporated in at least one of the solar cells which is between the other solar cells. The first conductor is coupled to one of the solar cells and the second conductor is coupled to another one of the solar cells.Type: ApplicationFiled: May 3, 2007Publication date: May 29, 2008Applicants: ROCHESTER INSTITUTE OF TECHNOLOGY, GLENN RESEARCH CENTERInventors: Ryne P. Raffaelle, David M. Wilt
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Publication number: 20080121272Abstract: In some embodiments, an apparatus or system may include multiple power extractors each coupled to a different power source. The power extractors may be in parallel or in series. The extractors and power supplies may be joined together in a frame. A power source and power extractor may be included in an integrated circuit. Other embodiments are described and claimed.Type: ApplicationFiled: July 7, 2007Publication date: May 29, 2008Inventors: David A. Besser, Stefan Matan
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Publication number: 20080110486Abstract: A photovoltaic device that includes a plurality of elongated nanostructures disposed on the surface of a substrate and a multilayered film deposited conformally over the elongated nanostructures forming a plurality of photoactive junctions. A method making such a photovoltaic device includes generating a plurality of elongated nanostructures on a substrate surface and conformally depositing a multilayered film forming a plurality of photoactive junctions. The plurality of photoactive junctions are designed to capture different wavelengths of light. A solar panel includes at least one photovoltaic device.Type: ApplicationFiled: November 15, 2006Publication date: May 15, 2008Applicant: General Electric CompanyInventors: Loucas Tsakalakos, Bastiaan Arie Korevaar
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Publication number: 20080110490Abstract: A photovoltaic connection system and junction box for maximum current output and heat dissipation properties. The junction box includes a box portion, heat dissipating portion and a printed circuit board (PCB). The PCB includes at least one heat emitting electrical components, each heat emitting electrical component having a heat sink element attached thereto for dissipating heat generated by the heat emitting electrical component. The junction box further includes at least one electrical contact electrically connected to the at least one heat emitting electrical component. The box portion is configured for receiving at least a portion of the PCB and having an opening disposed for receiving external power input wiring by electrical contact with the at least one electrical contact. The heat dissipating portion being made of a thermally conductive material covering at least a portion of the heat sink.Type: ApplicationFiled: November 15, 2006Publication date: May 15, 2008Applicant: TYCO ELECTRONICS CORPORATIONInventor: Scott Stephen DUESTERHOEFT
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Publication number: 20080092941Abstract: A portable computer includes a base with a motherboard secured thereto, a display pivotably attached to the base, and a solar cell module. A first connector is installed to the display and electrically connected with the motherboard. The solar cell module has a solar panel. A plurality of photovoltaic sheets is arranged on the solar panel for converting solar energy into electric energy. A second connector is electrically connected with the solar panel. The solar cell module is detachably mounted to the display with the second connector connecting with the first connector such that the electric energy is capable of being transmitted to the motherboard via the first connector and the second connector.Type: ApplicationFiled: July 24, 2007Publication date: April 24, 2008Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: SZU-WEI KUO
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Patent number: 7343913Abstract: A solar concentrating collector includes corrugated board parabolic support segments with flexible strips and side tabs over the cut edge to support a laminate with reflective coated film. The reflector assembly has supporting arms and pivots about a heat absorbing conduit secured to vertical extensions of adjacent stationary posts. Selected external surfaces are weatherproofed. The conduit includes vacuum insulators and means to isolate conduit from insulator expansion. Upper arms support pulleys and cable take-ups for continuous collector position changes. Cross members of the extended post secure the fixed conduit, and at a higher level, a programmable drive to rotate two cable capstans for cables that pivot two adjacent reflector assemblies. Other embodiments include triangular or square fluid conduits with planar surfaces for photovoltaic cells and a modified reflective surface to disperse solar rays into a band of reflected sunlight directed to photocell areas.Type: GrantFiled: August 15, 2005Date of Patent: March 18, 2008Inventor: William Paul Niedermeyer
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Publication number: 20080053514Abstract: A Seebeck solar cell device is disclosed, combining both photovoltaic and thermoelectric techniques. The device may be formed using, for example, a conventional photovoltaic cell formed from a doped silicon wafer. The material used to form conductors to the front and rear regions of the cell are chosen for their thermoelectric characteristics, including the sign, or polarity, of their Seebeck coefficients. The distal portion of each conductor is insulated from the solar and waste heat and, in some embodiments, is also coupled to a cooling mechanism. Multiple such devices can be connected in series or parallel.Type: ApplicationFiled: September 4, 2006Publication date: March 6, 2008Inventor: Joseph A. Micallef
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Publication number: 20080053513Abstract: A system (112) for providing continuous electric power from solar energy is provided. The system includes a solar concentrator (302) formed of an optically reflective material having a curved surface that defines a focal center or a focal line toward which light incident on the curved surface is reflected. The system also includes a PV/thermal device (310) positioned substantially at the focal center or along the focal line. The PV/thermal device is comprised of a photovoltaic array (500) and a fluid cooling system for the photovoltaic array. The fluid cooling system includes a thermal energy collector (504). A battery charging system (118) is coupled to the photovoltaic array. The battery charging system includes a battery charging circuit. The battery charging system is programmed to selectively provide a charging current for the battery charging circuit during periods when the solar concentrator is exposed to solar radiation.Type: ApplicationFiled: September 6, 2006Publication date: March 6, 2008Applicant: HARRIS CORPORATIONInventor: William Robert Palmer
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Patent number: 7339108Abstract: A device is disclosed for reducing the risk of primary and secondary electrostatic discharges occurring in particular in the solar generators of spacecraft. A solar energy concentrator device for spacecraft includes a reflector for reflecting solar radiation onto a photovoltaic cell for converting solar energy into electrical energy and a heat transfer arrangement for transporting to a cold area heat energy stored by the cell following reception of solar radiation. One particular application of the device is to solar panels for satellites.Type: GrantFiled: January 6, 2003Date of Patent: March 4, 2008Assignee: ThalesInventors: Myriam Tur, Thierry Dargent, Sylvie Brosse
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Publication number: 20080029150Abstract: Which, using a heat transfer fluid in any thermodynamic cycle or system for using process heat, comprises: two-dimensional solar concentrator means for heating the heat transfer fluid from a temperature T1 to a temperature T2; three-dimensional solar concentrator means for overheating the heat transfer fluid from a temperature T2 to a temperature T3; such that the advantages of working at high-temperatures of the three-dimensional solar concentrator means are taken advantage of with overall costs similar to those of two-dimensional solar concentrator means. In a specific application for generating electric power, the two-dimensional solar concentrator means consist of a parabolic trough collector (1), while the three-dimensional solar concentrator means consist of a heliostat field and central tower (2) for generating overheated steam that expands in a turbine (6) coupled to an electric generator (7).Type: ApplicationFiled: March 28, 2007Publication date: February 7, 2008Applicant: Solucar, Investigacion y Desarrollo, (Solucar R & D), S.A.Inventors: Valerio Fernandez Quero, Marcelino Sanchez Gonzalez, Rafael Osuna Gonzalez-Aguilar
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Publication number: 20080023062Abstract: An invention to passively track the sun for the purposes of collecting, filtering and concentrating sunlight simultaneously and variously onto a photovoltaic cell, a heat collection device, and a thermally activated cooling device for the PV cell in order to efficiently and economically produce electrical power. The invention comprises a holographic light gathering element that also splits the light frequencies and focuses to two or more points or lines. The light frequency is split such that the UV wavelength of interest for PV cell operation is split from all the other wavelengths and focused on the PV cell or light conducting media that will direct the UV to the PV cell location. The other wavelengths of the solar spectrum are focused on a different location that can be simply a “throw-away” of this excess heat or it can be usably focused on a bulb or pipe which collects the heat.Type: ApplicationFiled: January 4, 2005Publication date: January 31, 2008Inventor: Arlen Barksdale
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Publication number: 20070289622Abstract: A solar energy conversion package includes a photovoltaic (PV) cell, a thermionic or thermoelectric conversion unit and a thermal heating system. Solar radiation is concentrated by a lens or reflector and directed to the PV cell for electrical power conversion. A water circulation system maintains the PV cell at working temperatures. The thermionic or thermoelectric conversion cell is coupled between these cells in the thermal path to generate additional power. Additional efficiencies may be gained by partitioning the solar radiation with prisms or wavelength specific filters or reflective coatings into discrete spectrum segments optimized for each conversion unit for maximizing efficiency of electrical energy conversion and equipment design. Integrating all three of these conversion techniques produces a synergistic system that exceeds the performance conventional solar conversion systems.Type: ApplicationFiled: June 19, 2006Publication date: December 20, 2007Inventor: Daniel H. Hecht