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17 December 2008


Cree announces volume availability of LR24 recessed LED luminaire

LED chip, lamp and lighting fixture maker Cree Inc of Durham, NC, USA has announced the volume availability of the LR24, a 24-inch square, recessed LED luminaire which, the firm claims, delivers high-quality, energy-efficient light for suspended-ceiling applications traditionally addressed by linear fluorescents (lay-ins or troffers).

The LR24 is the newest addition to Cree’s family of recessed LED fixtures and, claims the firm, delivers the uniform, high light levels required for offices, schools, hospitals and retail environments while consuming less electricity than most linear fluorescents.

The LR24 has a superior color-rendering index (CRI) of 92 compared with 70-80 for fluorescents. It is also dimmable to 5% with standard protocols - providing additional design flexibility and further energy-saving potential.

“With the addition of the LR24, we can light an entire office using Cree LED fixtures,” says Neal Hunter, Cree’s president of LED lighting. “You can have it all - superior energy efficiency, natural-looking light, no toxic mercury and an ultra-low maintenance system, designed for 50,000 hours,” he adds.

Cree has already installed more than 1000 early-production LR24s in various national-account projects. “We have installed LR24s on one floor at the US Federal Reserve in Washington DC as part of our ongoing energy-efficiency program,” says US Federal Reserve plant manager Chris Jennings. “We look forward to evaluating additional Cree LED lighting products in other applications within the Federal Reserve.”

Cree says that the use of LED lighting can be a great advantage in gaining LEED (Leadership in Energy and Environmental Design) certification. “The use of LED lighting for general illumination can dramatically lower a building’s energy-density, allowing an architect to re-introduce accent or decorative lighting - something that is sometimes sacrificed in buildings pursuing LEED certification today,” says Tom Liebel, AIA, LEED AP, associate principal at Marks, Thomas Architects. The LR24 delivers high light levels at only 0.5-0.75W per square foot, says Cree.

The LR24 has already been recognized for its superior efficacy in the 2008 Lighting for Tomorrow solid-state lighting competition, organized by the American Lighting Association, the US Department of Energy (represented by Pacific Northwest National Laboratory) and the Consortium of Energy Efficiency.

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