We check out a solar powered car cooling system. It says it’s good to cool your car while it’s in the parking lot on a warm day. We put it to the test. Reporter: John Stehlin
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Sun-powered electric options were once limited to large, dark sheets, but now consumers have a choice. In addition to the panels of single or multi-crystal solar cells are available, solar film or thin-film units are available or in part in building materials such as roofing laminates. Each technology has advantages. The choice depends on budget, space, climate, and aesthetics. Your own solar and wind power for less than $ 200, the cells that make up a crystalline photovoltaic modules are as dark rectangles and octagons. A multi-crystalline cells often appears as a sparkly rectangle. The electrical connections in both technologies show a pattern of lines of silver. “Thin-film” does not refer to a particular material. These modules can be made from amorphous silicon (a-Si), copper indium gallium diselenide (CIGS) and cadmium telluride) are made (CdTe. Amorphous silicon for applications where popular affair sees. Since they will be put on plastic and on glass, a-Si flexible in continuous rolls can produce. Amorphous silicon is used in laminates, solar shingles and roof tiles. Apart from the appearance and versatility, efficiency is a factor in the selection of materials PV. An agreement framed crystalline system will generate more power on less space. The flexible photovoltaic systems, while more are aesthetic, about half as efficient. This means a flexible module will require twice as much space to generate the same amount of energy than a conventional system. This has a major impact on system size. A three by three foot solar laminate system can deliver 60 to 70 W, with efficiencies of up to 8%. A three by five feet of crystalline module can deliver 170 to 220 W, with up to 17% efficiency. But the power is not the only factor. Cell temperature affects the PV cells power. Crystalline Modules lose efficiency at higher temperatures. Solar film units that are less sensitive to the ambient temperature, losing perhaps 2% of their power at 100F, compared with 6% loss for a conventional crystalline system. The cell temperature can be changed to the system by allowing for air flow, but if prone to high ambient temperatures, a thin-film system can be the right choice. Produce your own solar and wind power for less than $ 200 New amorphous silicon modules produce 20% to 25% more power than rated. While these to the normal rated power within six to twelve months, any system using these modules is to stabilize the first one must deal with higher performance. Traditional modules stabilized immediately, which makes this argument obsolete. Once the a-Si modules have become stable, they are degraded at approximately the same level as other systems. Not all climate zones are sunny, so shade and performance in low light conditions may be an additional concern. Flexible SO-powered panel cells may have the same length as the module on it. These cells are less likely to be completely in the shade than crystalline cells, which are usually only five or six centimeters in diameter. One type of technology that perform well in the shade or low light conditions under which there is used by Uni-Solar products. These modules are flexible, and have triple-junction cells made of amorphous silicon. This technology makes it possible to bypass diodes are used within the module so that each cell that is in the shade, can be circumvented. In addition, this agreement can order any item in the multi-junction cell capture a different wavelength of light. This allows for better energy production under conditions where indirect lighting is or is not uniform. Your own solar and wind power for less than $ 200
Originally posted 2010-01-25 01:03:59.
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