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
| Mar 23, 2011
AIA adds 13 new contract documents to Documents-on-Demand service
Web-based solution adds 13 popular Architect’s Scope of Services Documents to AIA Documents-on-Demand, providing easy access to documents anytime, anywhere.
| Mar 23, 2011
After 60 years of student lobbying, new activity center opens at University of Texas
The new Student Activity Center at the University of Texas campus, Austin, is the result of almost 60 years of students lobbying for another dedicated social and cultural center on campus. The 149,000-sf facility is designed to serve as the "campus living room," and should earn a LEED Gold certification, a first for the campus.
| Mar 23, 2011
Architecture Billings Index shows nominal increase
The American Institute of Architects (AIA) reported the February Architecture Billings Index score was 50.6, up slightly from a reading of 50.0 the previous month. This score reflects a modest increase in demand for design services (any score above 50 indicates an increase in billings). The new projects inquiry index was 56.4, compared to a mark of 56.5 in December.
| Mar 22, 2011
The American National Standards Institute accredits Stantec for greenhouse gas verification
Stantec Consulting Ltd.’s Atmospheric Environment Group has been awarded accreditation by the American National Standards Institute (ANSI) for verification of assertions related to greenhouse gas (GHG) emissions. The Scope of Accreditation is for verification of emissions and removals at the organizational level for Group 1 – General.
| Mar 22, 2011
Mayor Bloomberg unveils plans for New York City’s largest new affordable housing complex since the ’70s
Plans for Hunter’s Point South, the largest new affordable housing complex to be built in New York City since the 1970s, include new residences for 5,000 families, with more than 900 in this first phase. A development team consisting of Phipps Houses, Related Companies, and Monadnock Construction has been selected to build the residential portion of the first phase of the Queens waterfront complex, which includes two mixed-use buildings comprising more than 900 housing units and roughly 20,000 square feet of new retail space.
| Mar 21, 2011
RATIO Architects announces merger with Cherry Huffman Architects
RATIO Architects, Inc. with studios in Indianapolis and Champaign, Ill., recently announced it has merged with prominent Raleigh, N.C., firm Cherry Huffman Architects.
| Mar 18, 2011
Universities will compete to build a campus on New York City land
New York City announced that it had received 18 expressions of interest in establishing a research center from universities and corporations around the world. Struggling to compete with Silicon Valley, Boston, and other high-tech hubs, officials charged with developing the city’s economy have identified several city-owned sites that might serve as a home for the research center for applied science and engineering that they hope to establish.
| Mar 17, 2011
Perkins Eastman launches The Green House prototype design package
Design and architecture firm Perkins Eastman is pleased to join The Green House project and NCB Capital Impact in announcing the launch of The Green House Prototype Design Package. The Prototype will help providers develop small home senior living communities with greater efficiency and cost savings—all to the standards of care developed by The Green House project.
| Mar 17, 2011
Hospitality industry turns to HTS Texas for ‘do not disturb’ air conditioned comfort
Large resort hotels and hospitality properties throughout the Southwest have been working with local contractors, engineers and HTS Texas for the latest innovations in quiet heating, ventilating and air conditioning (HVAC) equipment. The company has completed 12+ projects throughout Texas and the Southwestern U.S. over the past 18 to 24 months, and is currently working on six more hotel projects throughout the region.
