the best at the end!!!!!!!!
The foregoing disclosure and description of the inventions are illustrative and explanatory. Various changes in the size, shape, and materials, as well as in the details of the illustrative construction and/or illustrative method may be made without departing from the spirit of the invention. For example, while the above illustrations and descriptions have been directed to include line-focus arched Fresnel lenses and silicon cells arranged in linear photovoltaic receivers in the focal lines of the arched lenses, the spirit of the invention applies equally to point-focus dome-shaped lenses and multi-junction cells arranged in a pattern corresponding to the focal spots of the dome lenses.
patentapplikation inkl. thermalvolt: It is currently contemplated that an air-cooled version of the invention will be used for electricity production alone while a liquid-cooled version will be used for combined electricity and heat production.
and include other materials: However, the container material is in no way restricted to aluminum, since many other materials such as galvanized steel, plastics, glass, or the like, or a combination thereof could be used.
The solar cell material is in no way restricted to silicon, since many other cell materials from gallium arsenide (GaAs) to copper indium gallium selenide (CIGS) to triple junction gallium indium phosphide-gallium arsenide-germanium (GaInP—GaAs—Ge) could be used.
Oktober 2013 Nasa artikel: Generating electricity from 20 suns
Piszczor said. And if multi-junction photovoltaic cells become economical enough for terrestrial applications, that would be good news for the concentrators, which are needed to get the most out of those high-efficiency cells.
“Everything comes down in cost,” O’Neill said, “so I think that eventually, these multi-junction cells will be low enough to use in terrestrial concentrators and have a competitive product.”
Innovators at NASA’s Glenn Research Center have developed a low-cost, high-efficiency solar cell that uses a thin layer of selenium as the bonding material between wafers. Selenium is a semiconductor, and it is also transparent to light at photon energies below the band gap. The innovation allows a multijunction solar cell to be developed (1) without the constraint of lattice matching, and (2) using a low-cost, robust silicon wafer as the supporting bottom substrate (and bottom cell). This enables a cell that is simultaneously lower in cost, more rugged, and more efficient than existing space solar cell designs. This technology has the potential to be used in next-generation solar cells in space, and it can be commercialized for terrestrial applications such as power plants and smart grid systems.
NASA Glenn Research Center (GRC) innovators have developed unique, tandem photovoltaic cells (or “solar cells”) in configurations that offer improved performance at an extended temperature range. The highest efficiency solar cells available today offer multiple junctions with subcells, using different semi-conductor materials. By layering the subcells, the solar spectrum is split into several bands, with the topmost layer absorbing the shortest wavelength of light and the lowest layer absorbing the longest wavelength. In contrast to the germanium substrates used for most multi-junction (or “tandem”) solar cells, GRC’s patented technology uses a crystalline silicon (Si) substrate, offering lower weight and lower cost. GRC’s multi-junction solar cell has bottom solar cell junctions of silicon and a top solar cell junction of gallium phosphide, the thicknesses and characteristics of which are adjusted for optimal efficiency. Because the solar cells are able to operate at both room and elevated temperatures, a variety of terrestrial and high-temperature operating conditions can be accommodated.
O’Neill has extensively researched the
possible use of streched fresnel lens refractive concentrator
arrays for use in space solar power . O’Neill argues that
in the long term, the Stretched Lens Array (SLA) proposed
can reach 1 kW/kg for MW level arrays. A 2.5kW Stretched Fresnel Lens array called SCARLET on the Deep Space
One Probe demonstrated 45 W/kg specific power . The
SLA uses a 140 micron thick fresnel lens array made from a
silicone rubber material. Certainly, the use of fresnel lens
optics makes sense when using a photovoltaic array for a
space-based solar power satellite. For a satellite using solar
thermal conversion, such as the one described in this paper,
the goal is to maximize the concentration of solar power at
minimum mass while incurring the smallest losses. Ultralight
reflective optical elements were chosen to achieve very high
efficiencies at low mass and as a result were selected as the
best conceptual design choice.
google: "Design of a Gigawatt Space Solar Power Satellite Using
Optical Concentrator System"
best of luck. hope isn't an investment strategy. intelligent, logical arguments on a message board might be a strategy, you should try it some time.
so why mr. gelbaum say on the "giving pledge" homepage: if entech have successful, then value will be created for veterans and military families
google "giving pledge" and search monica and david gelbaum!
interesting list of patents mr o'neill says he owns.
whoopee, entech won an award.
o'neill left entech along with almost everyone else.
so why stand this on mr. o´neill´s homepage??
Hot News! NASA Climate Change Article on Our Work October 21, 2013
google: "Mark O'Neill, LLC"
o'neill + emcore and no entech is my interpretation.
entech "deployable space systems" 2013
makes no sense foe entech to keep any contracts secret, the other contractors sure aren't.
Space Technology and Innovation | NASA Banking on Solar Electric Propulsion’s Slow but Steady Push
Meanwhile, Deployable Solar Systems, the other company working on solar arrays that might find their way onto NASA’s asteroid tug later this decade, is sticking with the tried and true rectangular solar panel shape — with a few modifications.
“We don’t have any motors, we don’t have any complex mechanisms, complex hinges or anything,” Brian Spence, founder of Deployable Space Systems, said. Once in space, “the array unrolls like a carpet” using the pent-up force of a spring-loaded boom to unstow itself.
Deployable Space Systems, a 20-employee company founded by former ATK Space Component employees in 2008, is planning to vacuum test its novel Mega Roll-Out Solar Array in “the first quarter of next year,” Spence said May 14.
here we are in phase 2:
Deployable Space Systems, Inc. (DSS), in partnership with Mark O"Neill LLC (MOLLC) and Emcore Photovoltaics (EMCORE), will focus this effort on the TRL 5/6 development of a new innovative 100X-500X concentrator photovoltaic (CPV) solar array technology (termed CPV-Array). The proposed CPV-Array technology embodiment is a new lightweight high-performance point-focus refractive Fresnel lens concentrator space solar array that leverages from both MOLLC"s/ENTECH"s and EMCORE"s successful terrestrial CPV products, space-flight heritage derived from the successful NASA NMP DS1 and Air Force PASP+ technology demonstration experiments/missions, and DSS"s innovative deployable solar array structural platform technologies. The proposed CPV-Array technology promises to provide 40% efficiency under AM0 concentration, 100X to 500X concentration ratio capability, accommodate +/- 2 degrees off-pointing with less than 10% power loss, scalability to high power (100kW+ array size), tolerance to high radiation and natural/manmade environmental events, passively controlled low-operating temperature, affordability (up to 30% projected cost savings at the array level), lightweight (projected 300 W/kg BOL), high voltage operability (100V to 300V+), compact stowage volume, and operability in a 5-yr LEO or 15-yr GEO environment. BENEFIT: The proposed technology is applicable to all future DoD, NASA and commercial missions (including communications and earth observation) as a direct replacement for existing technologies. The proposed technology promises to provide the DoD with a near-term and low-risk solar array system for future high-survivability applications and will provide revolutionary performance beyond current state-of-the-art in terms of high operating efficiency, better cost-effective utilization of expensive ultra-high efficiency photovoltaic devices, ...
google: "100X-500X Concentrator Photovoltaic Space Solar Array System"
NASA SBIR 2012 Phase I Solicitation: SOLAROSA is a fusion of ENTECH's proven Stretched Lens Array (SLA) concentrator technology with DSS's innovative ultra-lightweight Roll-Out Solar Array deployable structural platform.
The proposed technology also has tremendous dual-use opportunities for a variety of non-space applications including both ground and roof-mount applications where low cost, manufacturability, ease of installation, compactness and high reliability is demanded. A terrestrial version of the technology would allow for low-cost high-performance theater mobile power production for the U.S. armed forces, or mobile power production for the commercial terrestrial based user.
google: "Multi-A.U. SOLAROSA Concentrator Solar Array for Space Science Missions"
NASA SBIR 2012 Phase II Solicitation: selection announcement date: Mar 04,2014
so i think it is very difficult to say what effect entech at this time. in my dreams our technology are 2015-2016 in space and also working here on earth with mj-cells!
Defense Energy Summit
Austin, TX, November 11-13, 2013
SBIR Defense Energy Funding Programs: Navy, DoE, NSF, NASA, DoD - 203
Chair & Moderator: John Williams, US Navy
The Small Business Innovation Research (SBIR) program supports small business development of new technologies meeting the nation's defense, security, energy, environmental and information needs. Energy needs in particular are the focus of special SBIR initiatives by agencies including the Navy/Marine Corps and other DoD organizations, the Department of Energy, the National Science Foundation and others. This session explores these dedicated energy technology development opportunities for small businesses, and the communication portals leading to these opportunities.
- Chris O’Gwin, US Department of Energy (DoE)
- Rich Leshner, NASA
- John Williams, US Navy
- Christopher Rinaldi, US Department of Defense (DoD)
google: "defenseenergy program"
The cells are also useful for terrestrial power generation in high value military applications, such as off-grid power generation and battery charging. Finally, the cells are attractive for the terrestrial concentrator photovoltaics (CPV) market. In all cases, the proposed substrate reuse technology development will substantially reduce the cost of ELO solar cells and arrays, thereby making the cells more commercially attractive.
google: "Cost Reduction of IMM Solar Cells by Recycling Substrates using Wet Chemical Etching"