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Orchids in the Kitchen window
Ray,
Thanks for the info. I thought low E had something to do with a gas they filled the space between the two sheets of glass. A metal coating on the surface makes more sense as a means to reflect heat. doug bolt Visit: http://www.boltassociates.com Ray @ First Rays Orchids wrote: Low-E glass has a coating consisting primarily of tin oxide on one of the surfaces. It is designed to trap long-wave infrared (heat) and reflect it back (to the inside in the winter, outside in the summer) to reduce energy use. The coating is probably in the neighborhood of 5000 angstroms thick, and reduces the intensity of the incoming light a small amount. If I recall correctly, the center of the visible light spectrum is reduced less than the ends, meaning that the shading - as far as your plants are concerned - is a slightly greater than what your eye detects. "Douglas Bolt" wrote in message ... Actually, the window in question (http://www.boltassociates.com/Orchids-Kitchen/) faces south. The glass is Low E type ( I don't know what effect this has on plant growth. Anyone know??) and during winter months the glass is shaded with window screen from about 16 inches down to the bottom. During the summer, the overhang on the roof shades against direct sunlight. That said, most plants are grown elsewhere during part of the year - either outside or under lights. doug bolt Visit: http://www.boltassociates.com |
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