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
| Aug 11, 2010
Morphosis builds 'floating' house for Brad Pitt's Make It Right New Orleans foundation
Morphosis Architects, under the direction of renowned architect and UCLA professor Thom Mayne, has completed the first floating house permitted in the U.S. for Brad Pitt’s Make It Right Foundation in New Orleans.The FLOAT House is a new model for flood-safe, affordable, and sustainable housing that is designed to float securely with rising water levels.
| Aug 11, 2010
Turner edges out Perkins+Will for the top spot on BD+C's Top 200 Building Team LEED APs ranking
With 1,006 LEED Accredited Professionals on staff, Turner Construction took the top spot on Building Design+Construction’s 2009 ranking of AEC firms with the most LEED APs, published as part of the Giants 300 report. Turner added more than 580 LEED APs during the past year to surpass Perkins+Will, which held the top spot four years running.
| Aug 11, 2010
BIG's 'folded façade' design takes first-prize in competition for China energy company headquarters
Copenhagen-based architect BIG, in collaboration with ARUP and Transsolar, was awarded first-prize in an international competition to design Shenzhen International Energy Mansion, the regional headquarters for the Shenzhen Energy Company.
| Aug 11, 2010
Guggenheim and Google team up on shelter design competition
The Solomon R. Guggenheim Museum and Google yesterday announced the launch of Design It: Shelter Competition, a global, online initiative that invites the public to use Google Earth and Google SketchUp to create and submit designs for virtual 3-D shelters for a location of their choice anywhere on Earth. The competition opened on June 8, 2009, in honor of Frank Lloyd Wright’s birthday, and closes to submissions on August 23.
| Aug 11, 2010
EwingCole to merge with healthcare specialist Robert D. Lynn Associates
EwingCole, a nationally recognized architectural, engineering, interior design, and planning firm with more than 320 professionals, today announced that it will combine its practice with Robert D. Lynn Associates of Philadelphia, a 40-person firm with a robust portfolio of healthcare projects. The combination will create the Delaware Valley¹s largest and most comprehensive firm with an emphasis on healthcare architecture, and a national scope and presence.
| Aug 11, 2010
Jacobs, Arup, AECOM top BD+C's ranking of the nation's 75 largest international design firms
A ranking of the Top 75 International Design Firms based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants
| Aug 11, 2010
See what $3,000 a month will get you at Chicago’s Aqua Tower
Magellan Development Group has opened three display models for the rental portion of Chicago’s highly anticipated Aqua Tower, designed by Jeanne Gang. Lease rates range from $1,498 for a studio to $3,111 for a two-bedroom unit with lake views.
| Aug 11, 2010
AIANY partners with New York's building department to launch design competition for safer, more appealing sidewalk shed
The New York City Department of Buildings (DOB) and the New York Chapter of the American Institute of Architects (AIANY) today announced the launch of the urbanSHED International Design Competition with support from the Alliance for Downtown New York, ABNY Foundation, Illuminating Engineering Society New York City Section (IESNYC), and the New York Building Congress.
| Aug 11, 2010
Construction employment declines in 48 states in August compared to last year
Construction employment saw significant declines in all but two states this August compared to last year according to an analysis of new state-by-state employment figures released today by the federal government. The analysis, conducted by the Associated General Contractors of America, however did show that the number of states gaining construction jobs increased slightly in August compared to July 2009.
