Analysis of daylighting control systems in 20 office and public spaces in Minnesota and Wisconsin shows that while the automatic daylight harvesting schemes are helping to reduce lighting energy in the buildings, most are not achieving optimal performance, according to a new study by the Energy Center of Wisconsin (ECW).
According to ECW, the median daylighting control system studied was saving 23% of lighting energy, including impacts on heating and cooling. This translated to 915 kWh saved for every kW of lighting controlled. But the average effectiveness (the energy saved versus energy saved with ideal control) of the controls was only 51%. This meant that almost half of the potential savings from these controls was not captured due to imperfect controls operation. Even worse, four of the 20 spaces studied had zero savings.
The low level of effectiveness, says ECW, is evidence of a lack of controls execution. The findings show that successful implementation of automatic daylighting control requires a significant commissioning effort to reach full energy-savings potential.
Read the full daylighting commissioning report from the Energy Center of Wisconsin.
As part of the report, ECW developed a tip sheet on commissioning and calibration and function testing of lighting controls. Recommendations include assigning a single person of the construction team to be responsible for verifying completion of all steps in the daylighting commissioning process, and proper training of the building owner/operator on the controls equipment and systems. Download the tip sheet (PDF)
(http://www.ecw.org/project.php?workid=1&resultid=494)
Related Stories
| Mar 10, 2014
Meet Tally – the Revit app that calculates the environmental impact of building materials
Tally provides AEC professionals with insight into how materials-related decisions made during design influence a building’s overall ecological footprint.
Sponsored | | Mar 10, 2014
A high-performance barn
Bastoni Vineyards replaces a wooden barn with an efficient metal building used for maintenance, storage, and hosting events.
| Mar 10, 2014
Field tested: Caterpillar’s Cat B15 rugged smartphone
The B15 is billed by Cat as “the most progressive, durable and rugged device available on the market today.”
| Mar 10, 2014
5 rugged mobile devices geared for construction pros
BD+C readers share their most trusted smartphone and tablet cases. The editors select some of their faves, too.
| Mar 7, 2014
Thom Mayne's high-tech Emerson College LA campus opens in Hollywood [slideshow]
The $85 million, 10-story vertical campus takes the shape of a massive, shimmering aircraft hangar, housing a sculptural, glass-and-aluminum base building.
| Mar 7, 2014
Learning from common leadership errors
As a leader in the AEC world, you’ll likely find yourself making certain mistakes over the course of your career. Here are a few common leadership errors that can easily be avoided.
| Mar 6, 2014
BD+C wants to hear about your breakthrough ideas and projects for the Giants 300 report
BD+C's 2014 Giants 300 survey form is now available. But completing the survey is just one way to participate in the July Giants issue.
| Mar 6, 2014
Must see: Tour Seinfeld's apartment with virtual reality headset
Fans of the show can now explore a virtual 3D model of the iconic New York residence, thanks to one Web designer's painstaking effort.
| Mar 5, 2014
5 tile design trends for 2014
Beveled, geometric, and high-tech patterns are among the hot ceramic tile trends, say tile design experts.
| Mar 4, 2014
How EIFS came to America
Design experts from Hoffmann Architects offer a brief history of exterior insulation and finish systems in the U.S.
