A Simple Method for Comparative Study on the Thermal Performance of LEDs and Fluorescent Lamps

Author

Yaxiao Qin ; Deyan Lin ; Hui, S.Y.

Author_Institution

Dept. of Electron. Eng., City Univ. (CityU) of Hong Kong, Kowloon, China

Volume

24

Issue

7

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

1811

Lastpage

1818

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.

Keywords

LED lamps; cooling; energy conservation; fluorescent lamps; power consumption; T5 fluorescent lamps; T8 fluorescent lamps; air-conditioned buildings; efficiency 73 percent to 77 percent; efficiency 87 percent to 90 percent; energy efficiency; heat dissipation; high-brightness LED lamps; light energy; luminous efficacy; open system; power dissipation; Consumer electronics; Energy measurement; Fluorescent lamps; Light emitting diodes; Plasma displays; Plasma temperature; Power electronics; Power engineering and energy; Thermal management; Thermal resistance; LEDs; lighting;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2009.2017021

Filename

5175610