80 Percent Renewables at Mid-Century?
Scientists from major U.S. research institutions have brought out the Renewable Electricity Futures Study, pronouncing the very real the possibility of 80 percent renewable energy by 2050. The study looked straight at the elephant in the room:At such high levels, “the unique characteristics of some renewable resources, specifically geographical distribution and variability and uncertainty in output, pose challenges to the operability of the U.S. electric system…”
That, of course, raises questions of whether “the U.S. power system can supply electricity to meet customer demand with high levels of renewable electricity...”
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posted by Ertai at
9:40 AM
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The scanner assembly that uses CCD usually has sensors arranged in three rows. These sensors have different filters such as the green, blue and red. Hand Scanner: In the early 1990s, equally drum scanners and flatbed scanners were too costly for simple home use. For that reason a number of companies produced small hand-held scanners. The hand-held scanner is available in two different forms such as 3D scanner and document scanner. Film Scanner: Special equipment is used to scan films. Film floor covering are moved crosswise a lens by using a 'stepper motor'. The CCD sensors placed inside the scanner, further scan these films.
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