What are the benefits of combining advanced lighting control strategies in the same space? Are the energy-saving benefits of lighting controls persistent over time? Can advanced lighting controls be successfully applied to open offices given concerns about jurisdiction conflicts, lighting uniformity, etc.? Can they enhance worker satisfaction? A new office lighting field study addresses these questions. Involving about 90 workers in a real-world open-office environment, the one-year study determined that occupancy sensing, daylight harvesting and individual occupant dimming control worked together in the building to produce average energy savings of 47% while correlating with higher occupant environmental and job satisfaction. The study demonstrates that sophisticated lighting control strategies can be combined successfully to generate persistent, large energy savings in open-plan offices while improving occupant satisfaction with their jobs and workspace.
In June 2006, the Lighting Controls Association published Education Express, a new free online distance-education program about lighting, controls and controllable ballasts.To date, the more than 2,000 students who have taken Education Express courses are giving the program high marks.
The study revealed that only 25 percent of the sidelighting photocontrol systems in the studied buildings were functioning well, whereas almost 100 percent of the toplighting photocontrol systems were found to be functioning well in the previous study. What went wrong?
In this special report by the Lighting Controls Association, we will describe bi-level switching code requirements, its role in the Commercial Buildings Deduction, methods and equipment, and the results of a study of typical energy savings achievable with bi-level switching in popular applications.
Dimming of fluorescent lighting offers significant benefits in terms of supporting visual needs with good lighting, giving users control of their own lighting, and energy savings. The advent of digital dimming offers a new option with clear advantages over traditional analog dimming. Digital dimming can be used almost anywhere that analog dimming can be used, for the same purposes: visual needs, personal control, daylight harvesting, scheduling and other control strategies. If fluorescent dimming is desirable for a given application, digital dimming can offer distinct advantages related to intelligence, flexibility and two-way communication.
While today’s occupancy sensors offer robust features, proven utility and reliability, they remain application-sensitive devices, which requires a properly educated designer and installer for the controls to be effective. The right occupancy sensor must be selected, it must be properly located and installed, and it must be field-calibrated.
In this article, we will examine the seven steps of the effective application of occupancy sensors.
The Lighting Controls Association (LCA) has announced the availability of EE201: Daylight Harvesting Control, a new course added to its popular Education Express program. Residing at the Association’s website www.aboutlightingcontrols.org, Education Express provides in-depth education about lighting controls and controllable ballast technology, application, system design and commissioning.
NEMA’s Lighting Systems Division has launched a new website for owners, specifiers, installers, and sellers of lighting systems. The new website, lightingtaxdeduction.org, provides comprehensive education and implementation information about lighting upgrades covered by the commercial buildings tax deduction provision of the Energy Policy Act of 2005 (EPAct).
The University of Toronto’s new “electronic classroom” combines familiar audiovisual equipment, such as slide projectors and VCRs, with such sophisticated equipment as a multi-sync data/video projection system and multi-scene preset dimming controls. Instructors can now electronically enhance their lectures with an integrated user-friendly presentation system.
The Weidt Group conducted a study of daylight harvesting projects to find out if daylight harvesting projects are living up to their expectations. The team—consisting of Eijadi, Prasad Vaidya, Tom McDougall, Jason Steinbock and Jim Douglas—reviewed dozens of completed projects, most of which were sidelit using windows, and separated the success stories—some of them operating for 25 years—from projects they considered to be failures.