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
Architects | Feb 3, 2015
Frank Lloyd Wright’s work nominated for UNESCO World Heritage Status
If selected, Wright’s work will be the first examples of U.S. modern architecture on the list.
Contractors | Feb 3, 2015
Nonresidential construction spending expands in December 2014
Seven of 16 nonresidential construction subsectors posted increases in spending in December on a monthly basis.
Office Buildings | Feb 3, 2015
Bjarke Ingels' BIG proposes canopied, vertical village for Middle East media company
The tensile canopy shades a relaxation plaza from the desert sun.
Fire-Rated Products | Feb 3, 2015
AIA course: Fire and life safety in large buildings
Earn 1.0 AIA/CES learning units by studying this article and successfully completing the online exam.
Multifamily Housing | Feb 2, 2015
D.C. developer sees apartment project as catalyst for modeling neighborhood after N.Y.'s popular High Line district
It’s no accident that the word “Highline” is in this project’s name. The goal is for the building to be a kind of gateway into the larger redevelopment of the surrounding neighborhood to resemble New York’s City’s trendy downtown Meatpacking District, through which runs a portion the High Line elevated park.
Healthcare Facilities | Feb 1, 2015
7 new factors shaping hospital emergency departments
A new generation of highly efficient emergency care facilities is upping the ante on patient care and convenience while helping to reposition hospital systems within their local markets.
Multifamily Housing | Jan 31, 2015
5 intriguing trends to track in the multifamily housing game
Demand for rental apartments and condos hasn’t been this strong in years, and our experts think the multifamily sector still has legs. But you have to know what developers, tenants, and buyers are looking for to have any hope of succeeding in this fast-changing market sector.
Multifamily Housing | Jan 31, 2015
20% down?!! Survey exposes how thin renters’ wallets are
A survey of more than 25,000 adults found the renters to be more burdened by debt than homeowners and severely short of emergency savings.
Multifamily Housing | Jan 31, 2015
Production builders are still shying away from rental housing
Toll Brothers, Lennar, and Trumark are among a small group of production builders to engage in construction for rental customers.
Architects | Jan 30, 2015
Exhibit captures 60 of Bjarke Ingels' projects — from hottest to coldest places on Earth
The Hot to Cold exhibit encompasses 60 of BIG’s recent projects captured by Iwan Baan´s masterful photography.