Trial Demonstration of Area Lighting Retrofit: Yuma Border Patrol, Yuma Arizona
[report]
Andrea M. Wilkerson, Jeffrey J. McCullough
2014
unpublished
The Yuma Sector Border Patrol Area is a high luminous flux lighting application in a high temperature environment, presenting a formidable challenge for light-emitting diodes (LEDs). The Yuma Sector lighting retrofit was documented to better understand LED technology performance in high temperature environments. This retrofit is an Energy Savings Performance Contract ENABLE project under the U.S. Department of Energy (DOE) Federal Energy Management Program. The LED lighting system selected for
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... he retrofit is expected to reduce energy consumption 69% compared to the incumbent quartz metal halide (QMH) lighting system. The annual maintenance cost savings was not permitted to be included in the economic analysis for this project; however, includes considerable reductions in maintenance visits required by the contractors and Customs and Border Protection's (CBP's) internal time and resource savings. The retrofit includes a 24 ft reduction in pole height, which would further savings due to reduced lift and labor costs. The advanced optical system of the selected luminaires improved the uniformity of illumination despite the reduction in pole height. The pole height reduction also considerably reduced stray light. Night is when the most activity occurs in the Yuma Sector Border Patrol Area, so it was important to ensure the lighting system would help the border patrol agents perform their duties. The LED lighting system installed for the trial demonstration confirmed LED technology's ability to improve lighting quality and reduce energy consumption. The design target was equal or greater maintained illuminance compared to the incumbent QMH system, which the LED system met. The initial output of the LED system and the maintained output of the QMH system-which had been operating for an unknown number of hours-were measured at the time of the trial demonstration. The average illuminance was comparable between the two systems. The average illuminance was greater for the LED system than the QMH system for all horizontal measurements taken between the primary fence (along the U.S.-Mexico border) and the secondary fence (125 ft back from the primary fence), and horizontal and vertical measurements on the primary fence side of the pole (located 45 ft from the primary fence). The vertical illuminance on the primary fence increased by more than 100% relative to the QMH system. The average horizontal and vertical illuminance on the secondary fence side of the pole was slightly lower for the LED system. The LED system delivered equal or better uniformity than the QMH system. The lighting system installed for the trial demonstration had been on the market less than 2 years, yet at the time of the installation an upgraded system that incorporated a newer generation LED package was going to be released to the market in the coming months. The upgraded lighting system provided improved efficacy and optical distributions, resulting in the expected energy savings of 69%. Lumen and color maintenance, luminaire efficacy, and luminaire component lifetimes are all significant concerns when LED luminaires are exposed to high ambient temperatures. If high luminous flux LED technology performs well in a region with high ambient temperature and solar radiation, it can perform well in most outdoor environments. The design process for the Yuma retrofit has already provided valuable knowledge to CBP and DOE. If the LED lighting system is installed, we will continue to document and disseminate information regarding the installation and long-term performance so that others may also gain valuable knowledge from the Yuma Sector Border Patrol Area lighting retrofit. iii Acronyms and Abbreviations
doi:10.2172/1170116
fatcat:y5nnu5f7r5fvfaobnoso2nru7i