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
| Jul 9, 2014
Harvard Business School to build large-scale conference center
Expected to open in 2018, the facility will combine the elements of a large-scale conference center, a performance space, and an intimate community forum. The new building will be designed by Boston-based William Rawn and Associates.
| Jul 9, 2014
Top U.S. cities for design professionals
Though New York and Los Angeles are often seen as the sole hubs for design jobs, other design epicenters are scattered between the coasts.
| Jul 9, 2014
The one misstep that could be slowing your company’s growth
Change. It’s inevitable. And success for any professional may very well depend on how well we adapt to it. SPONSORED CONTENT
| Jul 9, 2014
First Look: SOM's design for All Aboard Florida Fort Lauderdale rail station
The lightweight and luminous design "responds to its setting and creates a striking infrastructural icon for the city," said SOM Design Partner Roger Duffy.
| Jul 8, 2014
Fast-track naval hospital sparks sea change in project delivery [2014 Building Team Awards]
Through advanced coordination methods and an experimental contract method, the Building Team for Camp Pendleton’s new hospital campus sets a new standard for project delivery.
| Jul 8, 2014
Does Zaha Hadid’s Tokyo Olympic Stadium have a design flaw?
After being criticized for the cost and size of her stadium design for the 2020 Olympics in Tokyo, a Japanese architect points out a major design flaw in the stadium that may endanger the spectators.
| Jul 8, 2014
Frank Lloyd Wright's posthumous gas station opens in Buffalo
Eighty-seven years after Frank Lloyd Wright designed an ornamental gas station for the city of Buffalo, the structure has been built and opened to the public—inside an auto museum.
| Jul 8, 2014
Lost in the Museum: Bjarke Ingels' maze will make you look up and around
The maze, located in the National Building Museum, is a precursor to an exhibit showcasing some of BIG's projects. To navigate the maze, people must look up.
| Jul 7, 2014
5 factors that can affect thermal stress break risk of insulated glass units
The glass type, glass coating, shading patterns, vents, and framing system can impact an IGU’s risk for a thermal break.
| Jul 7, 2014
Team unity pays off for a new hospital in Maine [2014 Building Team Awards]
Extensive use of local contractors, vendors, and laborers brings a Maine hospital project in months ahead of schedule.
