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
Building Tech | Aug 26, 2016
NBBJ’s Goldilocks sensor technology can help employees find a workspace that is just right
The technology measures light levels, humidity and temperature, motion, and sound.
Great Solutions | Aug 23, 2016
11 great solutions for the commercial construction market
A roll-up emergency department, next-gen telemedicine center, and biophilic cooling pods are among the AEC industry’s clever ideas and novel innovations for 2016.
| Aug 19, 2016
RECONSTRUCTION GIANTS: Facelifts give buildings new identities, even as they keep a few wrinkles
Reconstruction is always a balancing act between the client’s pro forma and what the building needs to be vibrant again.
| Aug 19, 2016
Top 130 Reconstruction Architecture Firms
The Beck Group, Stantec, and IMC Consruction top Building Design+Construction’s annual ranking of the nation’s largest reconstruction sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
| Aug 18, 2016
LOCAL GOVERNMENT GIANTS: A ranking of the nation’s top design and construction firms in local sector work
HOK, Stantec, Turner Construction Co.,Clark Group, AECOM and STV top Building Design+Construction’s annual rankings of the nation’s largest local government sector AEC firms, as reported in the 2016 Giants 300 Report.
| Aug 18, 2016
STATE GOVERNMENT GIANTS: A ranking of the nation’s top design and construction firms in state sector work
CannonDesign, Stantec, Turner Construction Co.,Mortensen Construction, WSP | Parsons Brinckerhoff and AECOM top Building Design+Construction’s annual rankings of the nation’s largest state government sector AEC firms, as reported in the 2016 Giants 300 Report.
Hotel Facilities | Aug 17, 2016
First of its kind tri-branded Marriott hotel under construction in downtown Nashville
The hotel will combine the AC Hotels, Residence Inn, and SpringHill Suites brands.
University Buildings | Aug 16, 2016
New images of Rice University’s Moody Center for the Arts revealed by Michael Maltzan Architecture
The arts center will foster creativity for making and presenting works across all disciplines
Designers | Aug 16, 2016
CCDI, Morphosis, and Diller Scofidio + Renfro are among ten finalists vying for Chinese Eco-Island design
The winning firm will design the master plan and central buildings for the man made Haikou Bay island.
Mixed-Use | Aug 16, 2016
Goettsch Partners completes mixed-use tower in R&F Yingkai Square
The 66-story building is now the 7th tallest completed building in Guangzhou.
