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Product Testing and Evaluation

DELTA (Demonstration and Evaluation of Lighting Technologies and Applications) is a program run by the Lighting Research Center to design, evaluate and publicize energy-efficient lighting solutions. The sites selected contain lighting and controls systems that are evaluated for energy use, human response, cost, how well the technologies work and how easy they are to maintain. Plans, details and color photos illustrate each case study. Combined into a portfolio, the publications illustrate a wide array of effective lighting applications for common building types.

All DELTA publications are available for free and can be accessed by application:

Product Testing and Evaluation

The Lighting Research Center’s National Lighting Product Information Program (NLPIP) publishes reports designed to aid facility managers, utilities, lighting designers, engineers and electrical contractors in choosing the right products for the right applications. Currently, all NLPIP reports in Adobe Acrobat PDF format are free to the public. NLPIP publications are broken down onto four categories, and all NLPIP reports are available for free download.

Lighting the Way, for older adults

Everyone’s vision deteriorates with age, but there are ways to lessen its impact. Geared specifically towards aging seniors experiencing vision changes, this publication answers common questions about vision and lighting and offers ways light their home for easier and more comfortable seeing. The guide even goes room-by-room to make suggestions specific to each living space.

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Residential Lighting

In this project, the Lighting Research Center minimized the use of recessed incandescent downlights in the demonstration home by using the natural lines of the home and creating coves and valances, making indirect fluorescent lighting the primary ambient source. Warm color temperature linear fluorescents, dimmable in some cases, enhance the home’s interior colors and finishes and create interest. Occupancy sensors further reduce energy consumption. As part of the project, the homeowners chose ENERGY STAR fixtures where possible, or fixtures that can use compact fluorescent lamps. Low voltage halogen spotlights and floodlights provided accent lighting. New fluorescent fixtures have virtually no flicker or hum, can be dimmed, provide incandescent-like warmth, and last more than five times longer than incandescent lamps. This minimizes both replacement cost and the need to access hard-to-reach places to change a light bulb. View the different energy-efficient lighting examples in the showcase home:

Courtesy EPRI, Electric Power Research Institute

Lighting uses approximately one-quarter of the nation’s electricity. In the commercial sector, it may represent 40-50% of a building’s total load. Together, commercial and industrial lighting account for a large percentage of utility daytime peak demand. Yet most existing lighting systems, designed before energy prices jumped in the early 1970s, are inefficient. Recent advances in lighting technology offer utilities and their customers the opportunity to save energy and reduce daytime peak demand. To help customers plan energy-efficient lighting systems consistent with utility demand-side objectives, utility representatives need to be well informed about the state of the art in lighting.

Courtesy EPRI, Electric Power Research Institute Lighting accounts for about 20% of total U.S. electricity use; in the commercial sector, about one-third of electricity consumption and 25-40% of daytime peak demand are directly attributable to lighting. EPRI analysis indicates that if all technically possible energy-efficient lighting technologies were implemented, the consumption of commercial lighting electricity […]

Courtesy EPRI, Electric Power Research Institute

In 1989, the report “Lighting and Human Performance: A Review” was published by the National Electrical Manufacturers Association and the Lighting Research Institute. The current work performed an extensive review of the literature published since 1989. This literature has been organized according to the three ways lighting can affect human performance: visibility, circadian photobiology, and psychological effects.

Courtesy EPRI, Electric Power Research Institute

Lighting accounts for approximately 30% of overall electricity use and demand in commercial buildings. In recent years, many high-efficiency lighting technologies have been developed that offer significant energy savings without compromising lighting quality. In fact, lighting quality can often be improved by proper application of new, energy-efficient lighting technologies. However, the market penetration of these technologies has been slow, due in part to the lack of readily available information. To assist their customers in using lighting energy efficiently, utility personnel need to understand the fundamentals of lighting principles and technology. In 1986, EPRI published a basic lighting reference, the “Lighting Handbook for Utilities” (report EM-4423). This “Lighting Fundamentals Handbook” is intended to serve as an updated and improved reference for utility personnel.

Courtesy EPRI, Electric Power Research Institute

The Advanced Lighting Guidelines were first developed in 1991, and updated in 1993 by a partnership of the California Energy Commission (CEC), the U.S. Department of Energy (DOE), and EPRI. These previous editions were used extensively by designers, instructors, and energy policy makers around the world, and were published in several different formats. As new lighting technologies and application information became available, it was apparent that a revision to the Guidelines was needed, and discussions were held with interested parties.

The publications include recommendations for LED life definition, testing and measurement, best practice guides for different lighting applications, and recommendations for selecting LED lighting. ASSIST recommends methods call for testing products under conditions similar to those found in the application environment, where the light source could experience many different temperatures and may perform poorly as a result. Testing products by intended application also allows for apples-to-apples comparisons of product performance because test methods have been developed from a technology-neutral standpoint. ASSIST recommends publications are developed under the guidance of ASSIST sponsors using research conducted by the Lighting Research Center (LRC).

ASSIST recommends Publications to date: