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Troy, N.Y. -  12/10/2018

LRC Issues New DELTA Report on Sensor-Controlled Lighting

deltaThe Lighting Research Center (LRC) at Rensselaer Polytechnic Institute has issued a new DELTA report: Sensor-Controlled Lighting in Multi-Family Corridors. This guide shows results from a field demonstration of sensor-controlled, bi-level corridor lighting in a multi-family apartment building. Occupants had positive feedback, and considerable energy savings were achieved.
 
“Saving lighting energy in multi-family corridors is becoming more feasible,” said DELTA Program Director Jennifer Brons, who authored the report. “LED luminaires can easily dim light output when corridors are vacant, rather than turning off entirely. Most importantly, the occupants had positive comments about safety and comfort with sensor-controlled, bi-level lighting.”
 
With support from the New York State Energy Research and Development Authority (NYSERDA), the LRC and Taitem Engineering collaborated with Albany Housing Authority (AHA) to upgrade 60 corridor lights on six floors of a below market rate apartment building in Albany, New York, known as Lincoln Square Two.  
 
The field demonstration was extremely successful. Approximately three-quarters of residents liked the new bi-level lighting. Residents approved of the short (5-minute) delay time and dimming to low (20%) light output when the corridor was vacant. Short delay times led to the best energy savings. Use of sensors to create bi-level lighting more than doubled energy savings compared to upgrading to fixed-output LEDs, even in busy elevator lobbies. The lower the dim setting when vacant, the greater the energy savings due to bi-level lighting.
 
Monitoring at other below market rate apartment buildings showed similar results: bi-level lighting can be expected to operate at low output 75-80% of the time, on average. At market rate apartment buildings, bi-level lighting can be expected to operate at low output approximately 90% of the time.
 
“As energy codes move toward increased adoption of advanced lighting control technologies, these results show how to use sensor-controlled lighting to improve energy efficiency without occupant dissatisfaction,” said Brons.
 
 
About DELTA
Since 1994, the DELTA program, which stands for Demonstration and Evaluation of Lighting Technologies and Applications, has produced more than 40 case studies at sites ranging from schools to office buildings to senior housing, along with numerous outdoor locations. The reports are written for lighting specifiers, building managers, architects, and others who design and install lighting, and are available for free download from the LRC website. 

About the Lighting Research Center
The Lighting Research Center (LRC) at Rensselaer Polytechnic Institute is the world's leading center for lighting research and education. Established in 1988 by the New York State Energy Research and Development Authority (NYSERDA), the LRC conducts research in solid-state lighting, light and health, transportation lighting and safety, energy efficiency, and plant pathology. LRC lighting scientists with multidisciplinary expertise in research, technology, design, and human factors, collaborate with a global network of leading manufacturers and government agencies, developing innovative lighting solutions for projects that range from the Boeing 787 Dreamliner to U.S. Navy submarines to hospital neonatal intensive-care units. In 1990, the LRC became the first university research center to offer graduate degrees in lighting and today, offers a M.S. in lighting and a Ph.D. to educate future leaders in lighting. With 35 full-time faculty and staff, 15 graduate students, and a 30,000 sq. ft. laboratory space, the LRC is the largest university-based lighting research and education organization in the world.

About Rensselaer Polytechnic Institute
Rensselaer Polytechnic Institute, founded in 1824, is America's first technological research university. The university offers bachelor's, master's, and doctoral degrees in engineering; the sciences; information technology and web sciences; architecture; management; and the arts, humanities, and social sciences. Rensselaer faculty advance research in a wide range of fields, with an emphasis on biotechnology, nanotechnology, computational science and engineering, data science, and the media arts and technology. The Institute has an established record of success in the transfer of technology from the laboratory to the marketplace, fulfilling its founding mission of applying science "to the common purposes of life."