The California Lighting Technology Center recently announced publication of the Daylight Harvesting for Commercial Buildings Guide, which provides guidance towards meeting and exceeding California’s Building Energy Efficiency Standards for daylight harvesting.
The Illuminating Engineering Society, in partnership with the Lighting Controls Association, has published LEM-7, Lighting Controls for Energy Management, a detailed guide to energy-saving lighting controls. The publication was written by Craig DiLouie, LC in support of the IES Energy Management Committee. The 48-page 8.5×11 guide, which is available for $35 (IES members) and $50 […]
In a recent study, the Energy Center of Wisconsin monitored several daylighting systems in Minnesota and Wisconsin and analyzed the results of commissioning those systems. The researchers concluded: “Energy modeling, with its assumption of ideal control, appears to have the potential of being an accurate predictive tool for highly effective (>75%) control systems. However, the […]
Daylight harvesting control, or the practice of using light sensors to automatically reduce electric light in a space when sufficient daylight is present, has been demonstrated to produce significant energy cost savings in buildings. As a proven energy-saving strategy, it has been implemented into many sustainable building projects. It was also incorporated into ASHRAE/IES 90.1-2010 […]
In this webinar, Energy Center of Wisconsin experts discuss their research findings from monitoring and commissioning several daylighting control systems in Minnesota and Wisconsin. Field performance results are shared and guidelines for successful execution, startup and commissioning of these systems are addressed. Check it out here.
The Daylighting Collaborative at the Energy Center of Wisconsin has announced a free webinar, “Implementation of Successful Daylighting Control Systems,” which will be held Thursday, February 28, 2013, from 1–2:30 PM Central. The webinar will be presented by Scott Schuetter, PE, LEED AP BD+C and Scott Hackel, PE, LEED AP, Senior Energy Engineers at the […]
ECO-STRUCTURE has published an article by industry educator Craig DiLouie, LC on the topic of daylight harvesting. Read it here.
Lighting accounts for about a third of electrical energy consumption in commercial buildings. As advanced energy-saving lighting controls still have a minority penetration in the existing building stock, building owners have a major opportunity to reduce energy costs with lighting control. Adoption of advanced lighting controls faces the usual hurdles affecting all energy-efficient lighting, including […]
Last month at LightingControlsAssociation.org, we published an article about how to establish daylight zones in sidelighted (windowed) building spaces. We looked at an industry rule of thumb and then how the latest generation of energy codes and standards address it. In review, when designing an energy-saving daylight harvesting control system, a critical decision is to […]
When designing an energy-saving daylight harvesting control system, a critical decision is to establish lighting control zones, identifying lighting loads to be separately controlled. Before this decision can be made, however, we must first determine the daylight zones. A daylight zone, also called the daylight area (expressed in square feet), is defined by the ASHRAE/IES […]