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Solar greenhouse for Cleveland winters This “SunTrap” greenhouse recently opened at a community garden in the Ohio City neighborhood. Its design takes advantage of the low angle of the sun during Cleveland winters to trap solar energy and permit the growing of organic produce all year without any supplemental heat or light energy. It features a south-facing, double glass wall structure with a large thermal break between the panes. The rest of the greenhouse is heavily insulated with reflective interior wall surfaces, which bounce maximum light onto the plants. The SunTrap also has “night shutters” — solid panels that cover and seal the glass wall overnight, thus eliminating heat loss. The shutters open during daylight hours to bounce extra solar energy into the greenhouse. The greenhouse is a project of Great Lakes Brewing Co., which will use the produce in its restaurant, and Michael Stevens, SunTrap greenhouse entrepreneur. EcoCity Cleveland
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