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
| Jun 25, 2013
DC commission approves Gehry's redesign for Eisenhower memorial
Frank Gehry's updated for a new Dwight D. Eisenhower memorial in Washington, D.C., has been approved by the Eisenhower Memorial Commission, reports the Washington Post. The commission voted unanimously to approve the $110 million project, which has been gestating for 14 years.
| Jun 21, 2013
AIA report: Greater collaboration, stiffer competition among top trends in architecture
A new 34-page report from AIA highlights key trends in the architecture marketplace and their impact on business and growth.
| Jun 20, 2013
Virtual meetings enhance design of University at Buffalo Medical School
HOK designers in New York, St. Louis and Atlanta are using virtual meetings with their University at Buffalo (UB) client team to improve the design process for UB’s new School of Medicine and Biomedical Sciences on the Buffalo Niagara Medical Campus.
| Jun 19, 2013
Architects upbeat about the construction market
Following the first reversal into negative territory in ten months in April, AIA's Architecture Billings Index bounced back in May, reaching 52.9.
| Jun 19, 2013
NSF Sustainability begins verifying EPDs that can be used for LEED V4
NSF Sustainability has verified Environmental Product Declarations (EPDs) for nylon carpet styles and colors manufactured by Mannington Commercial and for J+J Flooring Group’s Kinetex® flooring product and Invision brand modular styles that use eKo® backing.
| Jun 19, 2013
Florida is latest battleground over LEED standards centered on certified wood
A nationwide battle over forest certification standards continues to be played out nationally and in Florida with legislation passed this month.
| Jun 19, 2013
Construction site safety improved in 2011
On-the-job construction fatalities dropped from 802 in 2010 to 781 in 2011, and recordable injuries fell from 4.7 per 100 workers in 2008 to 3.9 per 100 in 2011, according to data from the Bureau of Labor Statistics.
| Jun 19, 2013
New York City considers new construction standards for hospitals, multifamily buildings
Mayor Michael Bloomberg’s administration has proposed new building codes for hospitals and multifamily dwellings in New York City to help them be more resilient in the event of severe weather resulting from climate change.
| Jun 18, 2013
Report: HVAC occupancy sensors could slash building energy demand by 18%
Researchers at the DOE's Pacific Northwest National Laboratory conclude that significant energy savings can be achieved by varying ventilation levels based on the number of people in a given space.
| Jun 18, 2013
Turner report: Activity in urban markets driving construction cost increases
Turner Construction Company announced that the Second Quarter 2013 Turner Building Cost Index – which measures costs in the non-residential building construction market in the United States – has increased to a value of 859. This reflects a 1.18% increase from the First Quarter 2013 and 4.00% yearly increase from the Second Quarter 2012.
