Boiling Experimental Study on a Copper-Based Countercurrent Connected Microchannel
Two-phase microchannel heat sink is one of the most effective solutions to solve the problem of heat dissipation in small space and high-power electronic devices because of its high heat transfer performance.In this paper,a countercurrent connected microchannel based on copper was proposed.The heat sink and heat transfer equalization performance of the microchannel was verified by establishing a two-phase fluid loop system for pumping fluid,and the influence rule under different flows and degrees of undercooling was investigated.It is found that the excellent performance of countercurrent connected microchannel in heat transfer performance is mainly because it can promote the mixing of different dryness fluids in adjacent channels.Increasing the flow rate will improve the temperature homogenization,while increasing the supercooling degree will lead to the deterioration of heat sink temperature homogenization.
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