A Simple Method for Comparative Study on the Thermal Performance of LEDs and Fluorescent Lamps
Yaxiao Qin
Deyan Lin
Hui, S.Y.
Dept. of Electron. Eng., City Univ. (CityU) of Hong Kong, Kowloon, China;
This paper appears in: Power Electronics, IEEE Transactions on
Publication Date: July 2009
Volume: 24,
Issue: 7
On page(s): 1811-1818
ISSN: 0885-8993
INSPEC Accession Number: 10812269
Digital Object Identifier: 10.1109/TPEL.2009.2017021
Current Version Published: 2009-07-28
Abstract
A simple method is proposed to measure the heat dissipation of LEDs and fluorescent lamps in an open system that allows light energy to escape. Based on this method, a comparative study on the thermal and luminous performance of high-brightness LEDs and fluorescent lamps is presented. At rated power, T5 and T8 fluorescent lamps generate about 73%-77% of their total power as heat, while three types of high-brightness LEDs dissipate about 87%-90% of input power as heat. Heat dissipation is an important factor particularly for air-conditioned buildings when overall energy efficiency is considered. T5 fluorescent lamps perform better than some existing LEDs in terms of luminous efficacy and heat generation in this study.
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