In a report on the 240th national meeting of the American Chemical Society (ACS) on August 22 as described a self-cleaning coating on the surface of the solar cells increase the efficiency of electricity from sunlight and maintenance costs might be for large-scale solar systems to reduce.
"" We think our self-cleaning panels, often in areas of high dust and particulate pollutant concentrations benefit solar energy high systems issue, "said study leader Malay k. Mazumder, Ph.d.."Our technology can be used in both small and large - scale photovoltaic plants. "To our knowledge this is the only technology for automatic dust to purify the water or mechanical movement requires."
Mazumder which is with Boston University, said the need for this technology with the growing popularity of solar energy. Use of solar or photovoltaic, increased panels by 50 percent from 2003 to 2008 and forecasts suggest an increase by at least 25 percent annually in the future. Growth, he said, is the emphasis on alternative energy sources and company-wide concerns about sustainability with resources today in ways that threaten not the ability of future generations, to satisfy your needs).
Large-scale solar systems already exist in the USA, Spain, Germany, the Middle East, Australia and India. These systems usually reside in the sun-drenched desert areas where to sweep dry weather and wind, dust in the air and deposit it on the surface of the solar panel.Just like dirt on a budget Windows produced, that reduces the electricity enter the business part of the solar panel, reduce dust amount of light. clean water tends to scarce in these areas, so that it is expensive, the solar panels to clean.
"" A dust layer of a seventh one ounce per square yard solar power conversion 40 percent reduced", explains Mazumder."In Arizona, dust every month at about 4 times that amount deposited is."Deposition rates even higher in the Middle East, Australia and India."
"Working with NASA, Mazumder and colleagues first developed the self-cleaning solar panel technology for use in lunar and Mars missions."Mars is of course a dusty and dry environment, "Said Mazumder" and solar panels turn Rovers and future occupied and robotic missions must not succumb to dust deposition."But should neither the solar panels here on Earth."
Self-cleaning technology includes a transparent, electrically sensitive material deposition on glass or transparent plastic sheet over the panels hinterlegt.Sensoren monitor dust on the surface of the window and energize the material if dust is a critical level erreicht.Die electrical charge sends a dust prevention wave cascade over the surface of the material lift away dust and transport it from the edges of the screen.
Mazumder said that two minutes, the process about deposited 90 percent of the dust on a solar panel away and only a small amount of electricity generation by the Panel requires for cleaning operations.
"The current size of the market for solar panels is approximately $ 24 billion Mazumder said.""Less than 0.04% of global energy production is derived from solar panels, but if only four percent of the deserts of the world solar energy harvest were dedicated, our energy cover could be fully met self-cleaning weltweit.Dieser technology can play an important role."
Story source:
The above story is reprinted (with editorial adjustments of ScienceDaily personnel) of materials provided by the American Chemical Society, via EurekAlert!, a service of AAAS.
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