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
| Nov 4, 2011
Mortenson Construction builds its fifth wind facility In Illinois
Shady Oaks Wind Farm is under construction near Compton, Ill.
| Nov 4, 2011
CSI and ICC Evaluation Service agree to reference GreenFormat in ICC-ES Environmental Reports?
ICC-ES currently references CSI's MasterFormat and other formats in all of its evaluation reports. The MOU will add GreenFormat references.
| Nov 4, 2011
McCarthy completes construction of South Region High School No. 2 in Los Angeles
Despite rain delays and scope changes, the $96.7 million high school was completed nearly two-months ahead of schedule.
| Nov 4, 2011
Two Thornton Tomasetti projects win NCSEA’s 2011 Excellence in Structural Engineering Awards
Altra Sede Regione Lombardia and Bank of Oklahoma Center both recognized.
| Nov 3, 2011
GREC Architects announces opening of the Westin Abu Dhabi Golf Resort and Spa
The hotel was designed by GREC and an international team of consultants to enhance the offerings of the Abu Dhabi Golf Club without imposing upon the dramatic landscapes of the elite golf course.
| Nov 3, 2011
Hardin Construction tops out Orlando Embassy Suites
The project began in April 2011 and is expected to open in fall 2012.
| Nov 3, 2011
2012 Pritzker Architecture Prize Ceremony to be held in China
The tradition of moving the event to world sites of architectural significance was established to emphasize that the prize is international, the laureates having been chosen from 16 different nations to date.
| Nov 3, 2011
DMR Architects welcomes two new staff members
Siro Gonzalez joins the staff as junior graduate architect and Megan Byers joins the staff as marketing assistant.
| Nov 2, 2011
Mega deals drive 28% increase in global engineering and construction merger and acquisition value
Financial investors lead mega deal activity, China most active country in global domestic deals.
| Nov 2, 2011
Alexandria Real Estate Equities, Inc. breaks ground on Alexandria Center in Cambridge, Mass.
307,000-sf building to be house to executive offices of Biogen Idec.
