New ballast dimming switch developed

Apr 20, 2006

U.S. scientists say they've developed a simple, cost-effective, energy-saving device designed to "harvest" daylight automatically.

The device -- The DaySwitch -- was designed at the Rensselaer Polytechnic Institute's Lighting Research Center in Troy, N.Y., as an alternative to traditional dimming ballast systems that adjust light levels by reducing lamp current.

"The DaySwitch is designed to build end-use efficiency by reducing light energy usage in commercial buildings and maintaining occupant satisfaction," said Peter Morante, director of energy programs at the LRC. "It is estimated the DaySwitch will be able to reduce lighting energy consumption by 30 percent in buildings with significant daylight contribution through windows or skylights, allowing for a payback period of approximately three years."

LRC researchers say the new switch works with all conventional fluorescent ballasts and, because of its simple circuitry, the cost to produce the device is minimal and far less expensive than traditional daylighting control systems that utilize dimming ballasts.

The U.S. Department of Energy estimates that lighting accounts for one-quarter of the total energy consumed by U.S. commercial businesses.

The initial research appears in the journal Lighting Research & Technology.

Copyright 2006 by United Press International

Explore further: Ears, grips and fists take on mobile phone user ID

Related Stories

Cheap content, growing reach make Snapchat a fast-rising star

1 hour ago

Thousands of revelers descended on the Coachella music festival this month to rock out to their favorite bands and party day and night. But a far bigger audience from around the world - at least 40 million - joined in remotely ...

Google prepares for long battle in EU antitrust case

1 hour ago

Google Inc. probably faces a lengthy process in challenging antitrust charges by the European Union, but the Internet search giant might be able to avoid paying hefty fines or making big changes to its business.

Comcast expands 2-gigabit Internet service

2 hours ago

–In the race for speed, Comcast soon will offer the fastest residential Internet speed in the country to its 1.3 million residential customers in South Florida.

Recommended for you

Ears, grips and fists take on mobile phone user ID

27 minutes ago

A research project has been under way to explore a biometric authentication system dubbed Bodyprint, with interesting test results. Bodyprint has been designed to detect users' biometric features using the ...

Russian hackers read Obama emails, report says

11 hours ago

Emails to and from President Barack Obama were read by Russian hackers last year in a breach of the White House's unclassified computer system, The New York Times said Saturday.

Supermarkets welcome cold-comfort edge of F1 aerofoils

16 hours ago

UK-based Williams Advanced Engineering, the technology and engineering services business of the Williams Group, has collaborated with UK-based Aerofoil Energy to develop an aerodynamic device that can reduce ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.