Over the years, energy conservation has been increasingly important to food stores.  At first, the singular goal was to lower energy costs. Recently though, reducing greenhouse gas emissions has become another important objective. To those ends, food stores have exchanged inefficient shaded pole and PSC motors for EC motors, added night curtains to open refrigerated cases, replaced incandescent and fluorescent lamps with LEDs, converted from air-cooled condensers to evaporative, and ...

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