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
| Sep 16, 2010
Gehry’s Santa Monica Place gets a wave of changes
Omniplan, in association with Jerde Partnership, created an updated design for Santa Monica Place, a shopping mall designed by Frank Gehry in 1980.
| Sep 16, 2010
Green recreation/wellness center targets physical, environmental health
The 151,000-sf recreation and wellness center at California State University’s Sacramento campus, called the WELL (for “wellness, education, leisure, lifestyle”), has a fitness center, café, indoor track, gymnasium, racquetball courts, educational and counseling space, the largest rock climbing wall in the CSU system.
| Sep 13, 2010
Community college police, parking structure targets LEED Platinum
The San Diego Community College District's $1.555 billion construction program continues with groundbreaking for a 6,000-sf police substation and an 828-space, four-story parking structure at San Diego Miramar College.
| Sep 13, 2010
Campus housing fosters community connection
A 600,000-sf complex on the University of Washington's Seattle campus will include four residence halls for 1,650 students and a 100-seat cafe, 8,000-sf grocery store, and conference center with 200-seat auditorium for both student and community use.
| Sep 13, 2010
Second Time Around
A Building Team preserves the historic facade of a Broadway theater en route to creating the first green playhouse on the Great White Way.
| Sep 13, 2010
Palos Community Hospital plans upgrades, expansion
A laboratory, pharmacy, critical care unit, perioperative services, and 192 new patient beds are part of Palos (Ill.) Community Hospital's 617,500-sf expansion and renovation.
| Sep 13, 2010
China's largest single-phase hospital planned for Shanghai
RTKL's Los Angles office is designing the Shanghai Changzheng New Pudong Hospital, which will be the largest new hospital built in China in a single phase.
| Sep 13, 2010
Richmond living/learning complex targets LEED Silver
The 162,000-sf living/learning complex includes a residence hall with 122 units for 459 students with a study center on the ground level and communal and study spaces on each of the residential levels. The project is targeting LEED Silver.
