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
| Nov 27, 2013
University reconstruction projects: The 5 keys to success
This AIA CES Discovery course discusses the environmental, economic, and market pressures affecting facility planning for universities and colleges, and outlines current approaches to renovations for critical academic spaces.
| Nov 26, 2013
7 ways to make your firm more successful
Like all professional services businesses, AEC firms are challenged to effectively manage people. And even though people can be rather unpredictable, a firm’s success doesn’t have to be. Here are seven ways to make your firm more successful in the face of market variability and uncertainty.
| Nov 26, 2013
Design-build downsized: Applying the design-build method in an era of smaller projects
Any project can benefit from the collaborative spirit and cooperative relationships embodied by design-build. But is there a point of diminishing return where the design-build project delivery model just doesn't make sense for small projects? Design-build expert Lisa Cooley debates the issue.
| Nov 25, 2013
Electronic plan review: Coming soon to a city near you?
With all the effort AEC professionals put into leveraging technology to communicate digitally on projects, it is a shame that there is often one major road block that becomes the paper in their otherwise “paperless” project: the local city planning and permitting department.
| Nov 22, 2013
Kieran Timberlake, PE International develop BIM tool for green building life cycle assessment
Kieran Timberlake and PE International have developed Tally, an analysis tool to help BIM users keep better score of their projects’ complete environmental footprints.
| Nov 20, 2013
Architecture Billings Index slows in October; project inquiries stay strong
Following three months of accelerating demand for design services, the Architecture Billings Index reflected a somewhat slower pace of growth in October. The October ABI score was 51.6, down from a mark of 54.3 in September.
| Nov 19, 2013
Pediatric design in an adult hospital setting
Freestanding pediatric facilities have operational and physical characteristics that differ from those of adult facilities.
| Nov 18, 2013
6 checkpoints when designing a pediatric healthcare unit
As more time and money is devoted to neonatal and pediatric research, evidence-based design is playing an increasingly crucial role in the development of healthcare facilities for children. Here are six important factors AEC firms should consider when designing pediatric healthcare facilities.
| Nov 18, 2013
Lord Aeck Sargent opens metro D.C. office, updates brand
Architecture, design, and planning firm unveils its sixth office, plus a new visual identity system and website
| Nov 18, 2013
How do construction professionals use social media?
LinkedIn is the social network used by most construction professionals, according to the results of a newly released national survey conducted by the Construction Marketing Association.