Alternating current (AC) power won the ‘Battle of the Currents’ more than a century ago, but is it still the most practical means of power distribution? Certainly, AC power has been a reasonable choice for power distribution in the past, but due to changes in power generation, storage, and use, combined with advanced electronic technology and motivated by groups looking to move away from overdependence on traditional fossil fuel sources to cleaner alternative sources, it is quickly becoming apparent direct current (DC) could be making a comeback.
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The EMerge Alliance, an open industry association, is leading the rapid adoption of safe direct-current (DC) power distribution in buildings through the development of standards.* Its vision is to create open standards for room- and building-level DC microgrids for campuses and facilities.
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Reinvented, resized, and re-engineered, contemporary ceiling fans should no longer be an afterthought when it comes to design and occupant comfort. Innovative modern engineering has re-established ceiling fans as an integral part of comfort and energy conservation. Whether used on their own, employed with natural ventilation, or specified in tandem with air-conditioning systems, achieving proper air circulation with ceiling fans is no longer up in the air.
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