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
| May 2, 2012
Trimble acquires SketchUp 3D modeling platform
The transaction is expected to close in the second quarter of 2012.
| May 2, 2012
Building Team completes two additions at UCLA
New student housing buildings are part of UCLA’s Northwest Campus Student Housing In-Fill Project.
| May 2, 2012
Public housing can incorporate sustainable design
Sustainable design achievable without having to add significant cost; owner and residents reap benefits
| May 2, 2012
SMPS Foundation accepting applications for Garikes Scholarship
One outstanding scholar will be selected this year to receive a $1,500 scholarship award, to be used toward academic expenses, such as tuition and fees, books, supplies, and other similar expenses.
| May 2, 2012
Sasaki selected for 2012 National Planning Firm Award
The award recognizes a firm for its body of distinguished work influencing the planning profession.
| May 1, 2012
White paper discusses benefits of diaphragm and piston flushometer valves
The white paper highlights considerations that impact which type of technology is most appropriate for various restroom environments.
| May 1, 2012
Time-lapse video: World Trade Center, New York
One World Trade Center, being built at the site of the fallen twin towers, surpassed the Empire State Building on Monday as the tallest building in New York.
| May 1, 2012
Bruce E. Brooks Associates announces new commissioning subsidiary
Brooks + Wright Commissioning to be led by Will Wright.
