INVESTIGATING THE PHYSICO-CHEMICAL PROPERTIES OF INTEGRATED LIQUID-COOLED HEAT SINKS AND THE PERFORMANCE OF HEAT EXCHANGERS FOR HIGH-POWER IGBTS

Abstract

In this paper, the physical properties of embedded liquid-cooled heat sinks, which are a type of microchannel liquid-cooled heat sinks with a built-in vapor chamber (VC embedded heat sink), to solve the problem of thermal management for high temperature, the performance and chemical properties of the capacitive heat exchanger were studied. First, it was compared with a VC separate heat sink and a simple microchannel heat sink under the same conditions. The experimental results showed that the VC integrated heat sink has lower thermal resistance than the VC separated heat sink, and the relatively simple microchannel heat sink can significantly improve the temperature uniformity. The effect of cooling water flow rate, temperature and inclination angle on the VC mounted heat sink was further investigated. Lowering the coolant temperature lowered the heat source temperature but did not improve temperature uniformity. The tilt angle had a significant effect on the performance of the VC installed heat sink. At an inclination angle of 60 ° C, the operation of the heat exchanger with VC was optimal.