Indoor

LD+A Research Matters: Core Concepts

05/01/2011

LD+A— Core sunlighting is a practical, natural alternative for interior illumination deep within a building. Unlike other solar technologies, core sunlighting involves capturing sunlight at the building envelope, concentrating it, transporting it and regulating its release deep within the building at useful indoor lighting levels, typically only 1 percent of outdoor illumination. Significant electrical energy savings can be realized if the system incorporates automated electric lighting controls that substantially dim or completely turn off the electric lights.

A Guide to LED Retrofit Options for Linear Fluorescent Luminaires

Published: Fri, 04/04/2014
LED Retrofit Options for Linear Fluorescent Luminaires

Fluorescent lamps currently constitute 80 percent of lamps installed in the U.S. commercial sector, according to the Department of Energy's latest Lighting Market Characterization report. LED lighting products are receiving a great deal of attention for their potential to replace fluorescent lighting, reduce energy use and improve lighting quality in a variety of indoor commercial applications, including offices, classrooms and retail stores.

LED Linear Retrofit Solutions and Advanced Lighting Control Systems for Small Commercial Retail Applications

Linear fluorescent lamps account for 83 percent of installed lamps in the California commercial sector per a lighting market characterization performed in 2014. LED lighting products are receiving attention for their potential to replace fluorescent lighting, reduce energy use and improve lighting quality in a variety of indoor commercial applications, including offices, classrooms and retail stores. LED alternatives to linear fluorescent lighting products fall into three main categories: linear retrofit lamp solutions, linear retrofits for troffers and dedicated luminaires.

All High-Efficacy Lighting for Residential Applications

Published: Fri, 07/26/2013
All High Efficacy Lighting for Residential Applications

California's 2008 and 2013 Title 24 standards require some high-efficacy lighting in a limited number of residential space types, such as kitchens and bathrooms. (Refer to the project page for more on code requirements for high-efficacy luminaire classification.) Future standards requiring all high-efficacy lighting in residential buildings could yield large-scale energy savings—if cost-effective technologies will satisfy consumers.

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