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
| Feb 10, 2012
Task force addresses questions regarding visually graded Southern Pine lumber
Answers address transition issues, how to obtain similar load-carrying capabilities, and why only some grades and sizes are affected at this time.
| Feb 10, 2012
Atlanta Housing Authority taps Johnson Controls to improve public housing efficiency
Energy-efficiency program to improve 13 senior residential care facilities and save nearly $18 million.
| Feb 10, 2012
Besculides joins New York Office of Perkins Eastman as associate principal
Besculides joins with more than 17 years’ experience in design, business development, and account management for the government, healthcare, and corporate practice areas with a particular focus on the financial and media sectors.
| Feb 10, 2012
Mortenson Construction research identifies healthcare industry and facility design trends
The 2012 Mortenson Construction Healthcare Industry Study includes insights and perspectives regarding government program concerns, the importance of lean operations, flexible facility design, project delivery trends, improving patient experience, and evidence-based design.
| Feb 10, 2012
LAX Central Utility Plant project tops out
Construction workers placed the final structural steel beam atop the Plant, which was designed with strict seismic criteria to help protect the facility and airport utilities during an earthquake.
| Feb 8, 2012
Nauset completes addition and renovation for Winchester senior living community
Theater, library, fitness center, and bistro enhance facility.
| Feb 8, 2012
Mega-malls expanding internationally
Historically, malls have always been the icons of America – the first mall ever was built in Minneapolis in 1956.
| Feb 8, 2012
World’s tallest solar PV-installation
The solar array is at the elevation of 737 feet, making the building the tallest in the world with a solar PV-installation on its roof.
| Feb 7, 2012
AIA introduces seven new contract documents to Documents-On-Demand service??
AIA Contract Documents are widely-used standard form contracts among the building industry to support construction and design projects.
| Feb 7, 2012
Data center construction boom driven by healthcare and technology
The study includes insight and perspective regarding current investment plans of stakeholders, potential challenges to the data center boom, data center efficiency levels, the impact of new designs and technologies, and delivery methods.
