Demonstration Assessment of Light-Emitting Diode (LED) Street Lighting Host Site: Lija Loop, Portland, Oregon

[摘要] This report describes the process and results of a demonstration of solid-state lighting (SSL) technology in a residential street lighting application, under the U.S. Department of Energy GATEWAY Solid-State Lighting Technology Demonstration Program. In this project, eight 100W (nominal) high-pressure sodium cobra head fixtures were replaced with a like number of LED street light luminaires manufactured by Leotek, Inc. The Leotek product achieved an estimated payback in the Lija Loop installation of about 20 years for replacement scenarios and a much shorter 7.6 years for new installations. Much of the associated energy savings (55%) supporting these payback periods, however, were achieved by reducing average horizontal photopic illuminance a similar amount (53%). Examined from a different perspective, the measured performance suggests that the Leotek product is at approximate parity with the HPS cobra head in terms of average delivered photopic illumination for a given power consumption. HPS comprises the second most efficacious street lighting technology available, exceeded only by low pressure sodium (LPS). LPS technology is not considered suitable for most street lighting applications due to its monochromatic spectral output and poor color rendering ability; therefore, this LED product is performing at an efficiency level comparable to its primary competition in this application.

[发布日期] 2009-11-01

[学科分类] 物理（综合）

[关键词] COLOR;DEMONSTRATION PROGRAMS;EFFICIENCY;ILLUMINANCE;LIGHT EMITTING DIODES;PARITY;PAYBACK PERIOD;PERFORMANCE;ROADS;SODIUM LED;SSL;solid state lighting;light emitting diode;high pressure sodium;street lights;demonstration;U.S. DOE Solid-State Lighting;Technology Demonstration GATEWAY Program;Portland