Cooling devices for high power LED illuminators

Abstract

It's difficult to satisfy the requirement of heat dissipation using normal heat dissipation elements when the power of LED is high, and the heat transfer coefficient is low under natural convective heat transfer. The goal of this study is to improve the thermal characteristics of high-power LED. Based on heat transfer enhancement theory and equipments, combined with numerical simulation, our own patent technologies are adopted in this proposal, such as the unconventional fin-chaotic fin and the new type efficient phase change heat transfer element. Three kinds of cooling devices are proposed, two kinds of cooling devices which are hollow disc and rectangle are studied by simulation, and cooling effects with different convection heat transfer coefficient are investigated.