Adura Technologies Wireless Integrated Photosensor and Motion Sensor system demonstration at UC Davis
In 2012, UC San Francisco launched a pilot demonstration of energy-efficient lighting on the top level of its two-tier parking garage on Post Street in San Francisco. That level of the parking structure had lacked lighting for some time, but a sharp increase in use prompted calls from nearby residents expressing safety concerns. CLTC and collaborators succeeded in delivering ultra-efficient lighting where and when it was needed while minimizing light trespass so as not to disturb residents of the apartment building next door.
In 2013, UC Santa Barbara partnered with the SPEED team to demonstrate network controlled LED lighting for streetlights and post-top fixtures. These exterior fixtures were purchased with dimming power supplies and equipped with radio frequency (RF) control modules. The post-top fixtures were also equipped with occupancy sensors. These lighting controls allowed all the units to be incorporated into an adaptive mesh network control system that optimized the fixtures’ energy efficiency and gave the campus unprecedented control of its lighting.
In 2013 the SPEED team collaborated with UC San Francisco to demonstrate three lighting retrofits of fluorescent fixtures. Three control systems, each with different system architectures, were installed in three different UCSF corridors. All three systems utilize occupancy controls, but each one provides a different level of control, different programming capabilities, and energy and maintenance monitoring features. The demonstrations produced energy savings of 53–68%, based on occupancy rates of 12–16%.
The combination of occupancy controls, a bi-level generator, and an induction source produces an energy-efficient luminaire with exceptionally long life, good color quality, and dynamic light level response based on actual usage. The bi-level controls contribute additional savings that are directly proportional to automotive and pedestrian traffic patterns. Bi-level luminaires reduce to 50% power on vacancy and increase to 100% power on occupancy.
Most parking garages use high intensity discharge light sources that operate continuously regardless of lighting needs. These facilities typically do not employ energy-saving control strategies such as daylighting or time clock scheduling, and no considerations are made for lighting control based on occupancy. Garage lighting, designed to only a single static level, wastes energy and contributes to peak demand during the day and light pollution at night.
An overview of SPEED Lighting Technologies at UC Santa Barbara.
Join UC Davis representatives, including staff from CLTC and WCEC, at this year's CHESC event hosted by UC Santa Barbara. Visit booth #203 to learn about lighting and HVAC innovations tested through the State Partnership for Energy Efficient Demonstrations (SPEED). Information on incentives and project financing options will also be available.
2009 Campus Lighting Retrofit Forum
Presented by Cori Jackson and Michael Seaman
An overview of PIER State Partnership for Energy Efficiency (SPEED) program goals and summary.
PIER-sponsored research, development and demonstration (RD&D) has focused on development of integrated lighting systems for shared occupant spaces such as classrooms and conference rooms. These systems combine energy-efficient luminaires, multi-level scene control, occupancy sensors and daylight harvesting to create optimized lighting systems tailored for the modern learning space.