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The most widely used flat-plate collectors consist of a blackened metal plate, covered with a couple of sheets of glass, that is heated through the daylight slipping on it. This heat is then transferred to air or water, called copyright fluids, that move previous the back again in the plate. https://waylonfvdhj.blogocial.com/an-unbiased-view-of-solar-panel-installation-70882072

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