IMPROVING LED EFFICIENCY THROUGH THERMOELECTRIC COOLERS: led efficiency

Studenteropgave: Speciale (inkl. HD afgangsprojekt)

  • Maria Jose Alcón Lobo
4. semester, Energiteknik, Kandidat (Kandidatuddannelse)
Recent developments in power Light Emitting Diode(LED) industry made LEDs suitable for being effi-ciently used in high intensity lighting fixtures. The ap-plied power can reach up to 60 W/mm2 in the highoutput LEDs, while 80% of this power dissipated asheat loss. The heat loss increases the LED temper-ature, so that its efficiency and lifetime reduce. Aneffective cooling can provide suitable temperature dis-tribution on the LED. Each LED needs specific designand cooling properties of the heat sink system. An in-teresting cooling technology that can be integrated withthe LEDs is thermoelectric cooler (TEC). Thermoelec-tric cooler is able to move the hot zone, due to the heatloss, in the LEDs to the heat sink. Therefore, the con-version efficiency of LEDs enhances at lower operationtemperature
SpecialiseringsretningElektriske anlæg og højspændingsteknik
SprogDansk
Udgivelsesdato7 jun. 2019
Antal sider47
ID: 305334068