Affordable Solar & Wind

how can i choose a low cost and effective tracking mechanism for a parabolic trogh solar collector.?

of course you'll mount the trough so that no tracking is needed for the day.
the only reason for the tracking is because of the solar inclination with the seasons.

that said, you could walk past it once every couple days and adjust it a bit.
and the price surely is right.

PARABOLIC MIRROR 55.7" PARABOLOID SOLAR POWER STEAM GENERATOR Concave Mirror Solar Collector

Thames & Kosmos Alternative Energy and Environmental Science Stirling Engine $34.00 Discover the Stirling engine, a simple, clean and efficient energy technology that is quickly becoming a viable source of electricity as the availability of fossil fuels declines. The Stirling engine in this kit uses renewable energy from the sun to drive a generator, which charges a rechargeable battery to power an electric car. Named after its inventor, Robert Stirling, the original Stirling eng...

Nonimaging Fresnel Lenses: Design and Performance of Solar Concentrators (Springer Series in Optical Sciences) $181.76 A detailed and comprehensive account of the engineering of the world’s first nonimaging Fresnel lens solar concentrator. The book closes a gap in solar concentrator design, and describes nonimaging refractive optics and its numerical mathematics. The book shows the reader how to find his or her own optical solution using the rules and methodologies covering the design and the assessment of the n...

Refinement of the cylindrical parabolic solar collector ...

Wind effects on convective heat loss from a cavity receiver for a parabolic concentrating solar collector ...

Parabolic Trough $76.47 High Quality Content by WIKIPEDIA articles A parabolic trough is a type of solar thermal energy collector. It is constructed as a long parabolic mirror (usually coated silver or polished aluminum) with a Dewar tube running its length at the focal point. Sunlight is reflected by the mirror and concentrated on the Dewar tube. The trough is usually aligned on a northsouth axis, and rotated to track the sun as it moves across the sky each day.Alternatively the trough can be aligned on an eastwest axis, this reduces the overall efficiency of the collector, due to cosine loss, but only requires the trough to be aligned with the change in seasons, avoiding the need for tracking motors. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 80 Publication Date: 2010/10/15 Language: English Dimensions: 9.02 x 5.98 x 0.19 inches

Main Mirror and the Parabolic Mirror of the French Solar Furnace Where the Energy Is Distributed $79.99 Main Mirror and the Parabolic Mirror of the French Solar Furnace Where the Energy Is Distributed - Premium Photographic Print

Solar Furnace $87.62 High Quality Content by WIKIPEDIA articles A solar furnace is a structure used to harness the rays of the sun in order to produce high temperatures, usually for industry. This is achieved using a curved mirror (or an array of mirrors) that acts as a parabolic reflector, concentrating light (Insolation) onto a focal point. The temperature at the focal point may reach 3,500 C (6,330 F), and this heat can be used to generate electricity, melt steel, make hydrogen fuel or nanomaterials. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 128 Publication Date: 2010/05/19 Language: English Dimensions: 5.98 x 9.01 x 0.30 inches

Parabolic Induction $70.1 High Quality Content by WIKIPEDIA articles In mathematics, parabolic induction is a method of constructing representations of a reductive group from representations of its parabolic subgroups.If G is a reductive algebraic group and P = MAN is the Langlands decomposition of a parabolic subgroup P, then parabolic induction consists of taking a representation of MA, extending it to P by letting N act trivially, and inducing the result from P to G.There are some generalizations of parabolic induction using cohomology, such as cohomological parabolic induction and DeligneLusztig theory. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 78 Publication Date: 2010/08/15 Language: English Dimensions: 6.00 x 9.02 x 0.19 inches

Parabolic Loudspeaker $79.66 High Quality Content by WIKIPEDIA articles A parabolic loudspeaker is a loudspeaker which seeks to focus its sound in coherent plane waves either by reflecting sound output from a speaker driver to a parabolic reflector aimed at the target audience, or by arraying drivers on a parabolic surface. The resulting beam of sound travels farther, with less dissipation in air, than horn loudspeakers, and can be sent to isolated audience targets, unlike line array loudspeakers. The parabolic loudspeaker has been used for such diverse purposes as directing sound at faraway targets in performing arts centers and stadia, for industrial testing, for intimate listening at museum exhibits, and as a sonic weapon. A parabolic loudspeaker can send sound farther than traditional loudspeaker designs. The focused waves of a parabolic loudspeaker tend to dissipate in air at about 3 dB SPL per doubling of distance, rather than the usual 6 dB of conventional loudspeakers. Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 118 Publication Date: 2010/09/12 Language: English Dimensions: 6.00 x 9.02 x 0.28 inches

The Collector $49.99 Diana Ong The Collector - Giclee Print

Parabolic Microphone $70.1 High Quality Content by WIKIPEDIA articles A parabolic microphone is a microphone that uses a parabolic reflector to collect and focus sound waves onto a receiver, in much the same way that a parabolic antenna (e.g., satellite dish) does with radio waves. Typical uses of this microphone, which has unusually focused front sensitivity and can pick up sounds from many meters away, include nature recording, field audio for sports broadcasting, eavesdropping, law enforcement, and even espionage. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 96 Publication Date: 2010/09/18 Language: English Dimensions: 6.00 x 9.02 x 0.23 inches

Parabolic Sar $60.54 High Quality Content by WIKIPEDIA articles In the field of technical analysis, Parabolic SAR (SAR stop and reverse) is a method devised by J. Welles Wilder, Jr, to find trends in market prices or securities. It may be used as a trailing stop loss based on prices tending to stay within a parabolic curve during a strong trend.The concept draws on the idea that time is an enemy, and unless a security can continue to generate more profits over time, it should be liquidated. The indicator generally works well in trending markets, but provides whipsaws during nontrending, sideways phases; as such, Wilder recommended establishing the strength and direction of the trend first through the use of things such as the Average Directional Index, and then using the Parabolic SAR to trade that trend. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 72 Publication Date: 2010/09/18 Language: English Dimensions: 6.00 x 9.02 x 0.17 inches

Hubbard Scientific 4701 Solar Furnace $101.35 Demonstrate the extraordinary power of the sun by concentrating solar energy with this 12amp;quot; diameter parabolic dish. Using its reflective mirror the furnace can generate extreme temperatures to heat materials placed in the attached copper receptacle. Grades 312. American Educational Products have a lead ship time of 21 days.

Parabolic Reflector $70.1 High Quality Content by WIKIPEDIA articles A parabolic reflector (or dish or mirror) is a reflective device used to collect or project energy such as light, sound, or radio waves. Its shape is that of a circular paraboloid, that is, the surface generated by a parabola revolving around its axis. The parabolic reflector transforms an incoming plane wave traveling along the axis into a spherical wave converging toward the focus. Conversely, a spherical wave generated by a point source placed in the focus is transformed into a plane wave propagating as a collimated beam along the axis. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 100 Publication Date: 2010/09/18 Language: English Dimensions: 6.00 x 9.02 x 0.24 inches

PoofSlinky 02010 Minilab Solar Energy Kit $26.65 A complete lab with solar collector solar heater energy focusing lens thermometer and more than 25 energy conservation experiments. Harness the power of the Sun with the Solar Energy Kit. Collect and measure energy using a variety of solar tools. Easily conduct experiments and activities using the 16 page instruction booklet included.

Poof Slinky 02010 Minilab Solar Energy Kit $27.43 A complete lab with solar collector solar heater energy focusing lens thermometer and more than 25 energy conservation experiments Harness the power of the sun with the solar energy kit Collect and measure energy using a variety of solar tools. Easily conduct experiments and activities using the 16 page Instruction booklet included.

Solar Technologies for Buildings $256.58 A complete overview of solar technologies relevant to the built environment, including solar thermal energy for heating and cooling, passive solar energy for daylighting and heating supply, and photovoltaics for electricity productionProvides practical examples and calculations to enable component and system simulation e.g. Calculation of Uvalues, IV curve parameters and radiance distribution modellingDiscusses the new trends in thermal energy use, including the architectural integration of collector systems, integrated ventilation photovoltaics facades and solar powered absorption cooling systemsCoverage of cuttingedge applications such as active and passive cooling techniques and results from ongoing research projects Author: Eicker, Ursula Binding Type: Hardcover Number of Pages: 323 Publication Date: 2003/07/28 Language: English Dimensions: 9.94 x 6.62 x 0.93 inches

Slinky Science Solar Energy Science Kit $9.99 Help your child go green with this solar lab science kit. This kit comes complete with solar collector, solar heater, energy-focusing lens, thermometer, and more than 25 energy conservation experiments. Harness the power of the sun as you and your child collect and measure energy using a variety of solar tools. Easily conduct experiments and activities using the 16 page instruction booklet included. For ages 8 years and up.

Solar $124.99 Solar - Wall Mural

The Cookbook Collector: $10.2 The Cookbook Collector

Elenco EDU3050 Solar Energy Kit for Ages 8 and Up $18.14 All you need to build your own complete solar energy lab. Kit includes over 25 sunny and fun experiments. Learn about conservation of energy. Complete with solar energy collector and solar heater. Study light optics and magnification.

Parabolic Geometry $81.25 High Quality Content by WIKIPEDIA articles Euclidean geometry is a mathematical system attributed to the Alexandrian Greek mathematician Euclid, whose Elements is the earliest known systematic discussion of geometry. Euclids method consists in assuming a small set of intuitively appealing axioms, and deducing many other propositions (theorems) from these. Although many of Euclids results had been stated by earlier mathematicians, Euclid was the first to show how these propositions could be fit into a comprehensive deductive and logical system. The Elements begin with plane geometry, still taught in secondary school as the first axiomatic system and the first examples of formal proof. It goes on to the solid geometry of three dimensions. Much of the Elements states results of what are now called algebra and number theory, couched in geometrical language. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 106 Publication Date: 2010/08/10 Language: English Dimensions: 6.00 x 9.02 x 0.25 inches

Solar Power Tower $68.51 High Quality Content by WIKIPEDIA articles The solar power tower (also known as Central Tower power plants or Heliostat power plants or power towers) is a type of solar furnace using a tower to receive the focused sunlight. It uses an array of flat, movable mirrors (called heliostats) to focus the suns rays upon a collector tower. Early designs used these focused rays to heat water, and used the resulting steam to power a turbine. However, designs using liquid sodium in place of water have been demonstrated; this is a metal with high heat capacity, which can be used to store the energy before using it to boil water to drive turbines. These designs allow power to be generated when the sun is not shining. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 76 Publication Date: 2010/07/14 Language: English Dimensions: 6.00 x 9.02 x 0.18 inches

Thames Kosmos 659226 Solar Cooking Science $29.2 Thames amp; Kosmos (Tamp;K) was founded in 2001 with the mission of improving informal science education by publishing highquality science and technology related educational products for children of all ages. Tamp;K places an emphasis on teaching concepts and skills through handson modeling of realworld devices and processes' and by offering comprehensive' meaningful reading materials for a rich learning experience. amp;nbsp;. Construct a parabolic solar cooker with 14 interlocking foil pieces that reflect and focus the sun s radiation on a small cooking container. Heat water or melt chocolate to make an environmentally friendly fondue. Learn about solar thermal energy' a powerful and promising source of renewable energy. Ages 8 and up.

Parabolic Cylinder Function $79.66 High Quality Content by WIKIPEDIA articles In mathematics, the parabolic cylinder functions are special functions defined as solutions to the differential equationThis equation is found, for example, when the technique of separation of variables is used on differential equations which are expressed in parabolic cylindrical coordinates.The above equation may be brought into two distinct forms (A) and (B) by completing the square and rescaling z, called H. F. Webers equations (Weber 1869): Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 112 Publication Date: 2010/08/15 Language: English Dimensions: 6.00 x 9.02 x 0.27 inches

POOFSlinky 03005 Solar Energy All About Rocks Combo Pack $37.73 Combo contains Solar Energy Kit and All About Rocks The Solar Energy lab is a complete lab with solar collector solar heater energy focusing lens thermometer and more than 25 energy conservation experiments Harness the power of the Sun with the Solar Energy Kit Using the All About Rocks collect and measure energy using a variety of solar tools. Start your own rock collection and grow beautiful crystals Learn about and experiment with 8 different types of rock. Learn how to smash the toughest rock in the world

Poof Products Inc.Slinky SLT02010 Solar Energy Mini Lab $26.62 Educators Resource offers products for preK8 learning materials and educational toys used by schools teachers parents and children. A complete lab with solar collector solar heater energy focusing lens thermometer and more than 25 energy conservation experiments. Harness the power of the Sun with the Solar Energy Kit. Collect and measure energy using a variety of solar tools. Easily conduct experiments and activities using the 16 page instruction booklet included.

Degenerate Parabolic Equations $157.72 Mathematicians have only recently begun to understand the local structure of solutions of degenerate and singular parabolic partial differential equations. The problem originated in the mid 60s with the work of DeGiorgi, Moser, Ladyzenskajia and Uraltzeva. This book will be an account of the developments in this field over the past five years. It evolved out of the 1990Lipschitz Lectures given by Professor DiBenedetto at the Institut f r angewandte Mathematik of the University, Bonn. Author: DiBenedetto, Emmanuele Series Title: Universitext Binding Type: Paperback Number of Pages: 402 Publication Date: 1993/07/23 Language: English Dimensions: 9.21 x 6.14 x 0.84 inches

The Bone Collector $189.99 The Bone Collector - Framed Poster