LED troffer downlight

An LED edge-lit troffer downlight uses light-extraction technologies to extract light where needed, reportedly providing bright, uniform light in a thin form without hot spots or dark areas. The LEDs are spaced along the edge of the troffer assembly against the light guide to create an assembly measuring 23 1/2 inches by 23 1/2 inches with a thickness of 0.35 inches. The product provides a brightness of more than 60 lumens/W with a power consumption of 45 W.

Global Lighting Technologies, Brecksville, OH
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Holistic Approach Cuts Data Center Energy Needs

This Energy Logic approach to managing data center energy demand and supply can chop power costs in half while providing additional growth space.

Annual energy consumption for the U.S. data center population tops $3.3 billion, according to industry estimates. Consumption has been growing so quickly that it is outstripping the power capacity of many data centers. In fact, 46% of respondents to a Fall 2007 survey of the Data Center Users Group, St. Louis, reported that power capacity issues were the primary limitation to growth.

One way to tackle these energy issues and increase data center efficiency by 50% or more is to use a vendor-neutral, holistic approach called Energy Logic. The approach makes it easy to prioritize and customize best practices for equipment and operational procedures for new and renovation projects. It quantifies potential savings produced by each technology and best practices, and predicts returns on investment, most of which are less than a year. It also shows how reducing energy consumption in one area can cascade into additional savings in other areas.

In addition to improving data center energy efficiency, the approach removes restrictions on continued growth: finite space, cooling, and power assets.

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