Performance Of LED Street Lights In
Hot Environments
Author(s)
R. Saraiji, A. Harb & M. O. Hamdan
Abstract
Solid-state LED street lights present significant benefits to street light operators
as well as drivers and pedestrians. Questions remain, however, about their
performance in high temperature conditions. This paper explores the
performance of LED street light in one of the hottest regions in the world.
Two LED street lights were installed in an actual street in the city of Al Ain,
United Arab Emirates. The street was closed to the traffic and illuminance
measurements were taken daily every 10 minutes throughout the summer of
2010. Temperature and relative humidity values were also taken inside the two
light fixtures as well as outside the fixtures. The summer of 2010 had
significantly high temperatures with one week in July reaching maximum
ambient temperatures of 53oC.
This paper shows the Lux levels as well as the temperature and relative
humidity data acquired in the field. Results show fairly stable light levels
throughout the summer. The Lux levels did not change by more than 10%
throughout the summer.
Keywords: LED, solid-state lighting, street light, roadway lighting.
1 Introduction
Solid-state (LED) street lights present significant benefits to street light operators
as well as to drivers and pedestrians alike. However questions remain on their
performance in high temperature conditions. Whereas, many studies have
reported the relationship between junction temperature and luminous flux on
laboratory conditions, few studies were made on site under real conditions.
In recent decades, numerous papers have analyzed the LED (solid-state
lighting) thermal challenge [1, 6]. The LED thermal challenge is a bottleneck
Keywords
LED, solid-state lighting, street light, roadway lighting
Related Book
Other papers in this volume
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