Abstract:
The findings of the experimental study into optimizing the heat transfer rate of a PCM-based heat sink for high-power LEDs are
presented in this work. The study investigated five heat sink types, with and without PCM. The LED case and junction
temperatures, LED module temperatures, heat storage and release rate analyses, analyses of three types of cyclic operation
modes, luminous flux, and heat sink thermal resistance were all examined independently. The results indicated that the PCMbased
LED heat sink had improved thermal performance. The LED junction temperature of the PCM-equipped E-20 heat sink
is nine degrees Celsius lower at 10W than that of the heat sink without PCM. Furthermore, the E-20 heat sink with PCM
extends the LED module’s critical lifespan. As a bonus, the E-20 with PCM had a 38.19 percent lower thermal resistance at
10W than the E-20 without PCM. According to these results, the heat sink E-20 emits 715 lm at 10W when operated without
a phase-change material (PCM). With the same input power, the luminous flux of an E-20 equipped with a heat sink and a
phase-change material (PCM) is 750 lm, a gain of 4.7%. Finally, clearly recommend the heat E-20 sink with PCM suitable for
high-power LED thermal management system.
