Assessment of LED Technology in Ornamental Post-Top Luminaires (Host Site: Sacramento, CA)

Tuenge, Jason R.

Pacific Northwest National Laboratory (U.S.)

关键词: Solid-State Lighting;    Sacramento, Ca;    Retrofits;    Doe Municipal Solid-State Street Lighting Consortium;    Replacement Lamps;   

DOI  :  10.2172/1051998
RP-ID  :  PNNL-21036
RP-ID  :  AC05-76RL01830
RP-ID  :  1051998

美国|英语

来源: UNT Digital Library

【 摘 要 】

The DOE Municipal Solid-State Street Lighting Consortium has evaluated four different LED replacements for existing ornamental post-top street lights in Sacramento, California. The project team was composed of the City and its consultant, PNNL (representing the Consortium), and the Sacramento Municipal Utility District. Product selection was finalized in March 2011, yielding one complete luminaire replacement and three lamp-ballast retrofit kits. Computer simulations, field measurements, and laboratory testing were performed to compare the performance and cost-effectiveness of the LED products relative to the existing luminaire with 100 W high-pressure sodium lamp. After it was confirmed the LED products were not equivalent to HPS in terms of initial photopic illumination, the following parameters were scaled proportionally to enable equitable (albeit hypothetical) comparisons: light output, input wattage, and pricing. Four replacement scenarios were considered for each LED product, incorporating new IES guidance for mesopic multipliers and lumen maintenance extrapolation, but life cycle analysis indicated cost effectiveness was also unacceptable. Although LED efficacy and pricing continue to improve, this project serves as a timely and objective notice that LED technology may not be quite ready yet for such applications.