Projects

Ultra-Smart Exterior Luminaires

Ultra-Smart Exterior Luminaires

“Smart” luminaires use integrated sensors to adapt light levels based on available daylight and/or occupancy patterns; “ultra-smart” luminaires function similarly, but they are also capable of communicating with one another through wireless radio frequency (RF) connections. This RF networking allows the luminaires to operate as a larger system. Different luminaire types can be incorporated into the network, including wall packs, post-tops, parking lot luminaires, and streetlights.

CLASP Project: LED Replacement Lamp Testing

CLASP Project: LED Replacement Lamp Testing

The Collaborative Labeling and Appliance Standards Program (CLASP), an international nonprofit, partnered with CLTC to conduct laboratory testing of LED lamps currently available in the U.S. market. Data collected and analyzed in the course of testing helped the California Energy Commission develop a voluntary quality-based performance specification for screw-base LED lamps, with requirements for color characteristics and dimmability. CLASP and CLTC are also assisting the Energy Commission in developing a test methodology for measuring these quality characteristics.

AB1109 Baseline

AB1109 Baseline

The California legislature mandated a reduction in lighting energy use in the commercial and residential building sectors per Assembly Bill 1109, the California Lighting Efficiency and Toxics Reduction Act (AB 1109, Huffman, Chapter 534, Statutes of 2007). Per AB 1109, California must reduce its lighting energy use between 2007 and 2018 by 50% for residential interior lighting and by 25% for commercial interior and outdoor lighting.

Adaptive Corridors

Adaptive Corridors, Bainer Hall, UC Davis

CLTC research, demonstrations and case studies have shown adaptive corridor and stairwell lighting systems are a cost-effective strategy for achieving lighting energy savings of 40–50%. This is because many stairwells and corridors are illuminated continuously, despite low occupancy rates, and are usually equipped with standard, non-dimmable ballasts and operated with wall switches or from a panel box.

Core Sunlighting Systems

Solar Canopy for Core Daylighting

Core sunlighting systems deliver sunlight deep into multi-story building cores, where daylight is not available through skylights or windows. An effective core sunlighting system offers physiological and psychological benefits to occupants while dramatically improving the quality and color rendering of lighting, reducing lighting electricity use up to 75%, and reducing electricity loads during peak demand periods.

Daylight Optimization for Skylights

Daylight Optimization for Skylights

CLTC is evaluating dynamic skylight systems that automatically adjust light transmission to minimize glare and manage solar heat gain, significantly improving both lighting quality and energy savings. Engineers are using one of the Center's integrating spheres to measure the transmittance of different sample units.

Applications include residential and commercial spaces that receive sufficient sunlight to require some form of shading for occupant comfort or to prevent solar heat gain.

Adaptive LED Wall Packs

Adaptive LED Wall Packs

Wall packs offer an effective means of illuminating building perimeters, bolstering security and aiding wayfinding, but many are limited in terms of their efficiency, with minimal or nonexistent cutoff. Moreover, because wall packs typically operate in areas with low occupancy rates, they often waste energy fully illuminating vacant spaces for hours at a time every night.

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Recent News

At UC Davis, the California Lighting Technology Center is establishing “The Color Lab” in collaboration with the Cent
CLTC recently partnered with the California Energy Commission, Sonoma Clean Power Authority, and Frontier Energy Inc.
CLTC recently received a generous donation of lighting components from lighting manufacturer