Tunable-white LED lighting offers highly efficient general illumination combined with dimming and the ability to tune correlated color temperature (CCT) from warm- to cool-white. A strong potential application is classrooms, where teachers can set lighting/visual conditions to support classroom activities. In May 2019, the Department of Energy (DOE) published a Pacific Northwest National Laboratory (PNNL) report evaluating a trial installation of tunable-white lighting systems at three classrooms in an elementary school in Folsom, California.
The Lighting Research Center (LRC) recently published a new DELTA report evaluating new sensor-controlled LED corridor lighting installed in a multifamily residential building in Albany, New York. The project showed significant energy savings while overall occupant response was positive.
This article provides general introductory knowledge about the lighting control requirements imposed by the 2016 version of ASHRAE/IES 90.1 and the 2018 version of the IECC.
Lighting as a Service (LaaS) is an emerging and evolving business model in which the owner pays for light rather than the equipment that delivers it. The owner buys new lighting on a subscription basis over a multi-year term rather than a significant one-time capital investment.
Networked lighting controls can reduce energy consumption by an average 47 percent, according to a recent industry study. That makes control a powerful tool in managing energy costs, but it only captures a small fraction of its potential value in enhancing quality lighting with LED technology.
The AIA’s semi-annual Consensus Construction Forecast, a survey of the nation’s leading construction forecasters, is projecting 4.4% growth in nonresidential construction spending in 2019 and 2.4% in 2020. This article by Craig DiLouie, LC, CLCP reviews the forecast and leading construction industry economic indicators.
Cybersecurity is a challenge for the Internet of Things (IoT) as a whole (and corporate information networks beyond that), and lighting is not immune. This article discusses the issues involved and what specifiers and designers can do to mitigate any risks.
The LED revolution produced many luminaires with built-in switching and dimming. This facilitated a trend of using the same luminaires for both general and emergency lighting, powered by battery, backup generator, or UPS. This eliminates emergency units but creates a control challenge. The dual-function luminaires must be controllable for energy management and visual needs, while overriding these inputs to power to full brightness during a power failure.
In August 2018, the California Lighting Technology Center (CLTC) published a best practices guide for designing daylight harvesting lighting control systems. Titled Daylight Harvesting for Commercial Buildings Guide, it focuses on compliance with California’s Title 24 energy code, though it has broad application.
In August 2018, the DesignLights Consortium (DLC) released Energy Savings Potential of DLC Commercial Lighting and Networked Lighting Controls, which projects energy savings for LED commercial lighting and networked lighting controls. The report makes a case that to continue getting big energy savings from lighting for another decade, utility rebate program administrators should transition to supporting LED luminaires and networked controls.