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本文建立了构形树状小通道内流动沸腾换热模型,数值研究了树状通道网络内的流动沸腾换热特性,并与具有相同换热面积、入口直径的蛇形通道就泵功消耗、流动沸腾压降、通道温度变化和热有效性等指标进行了性能对比分析。研究表明,与蛇形通道相比,构形通道具有流动沸腾压降、泵功消耗小的优势,且其温度均匀性、热有效性也均优于蛇形通道。当热流密度为20 W/cm~2时,构形树状通道内流体的泵功消耗约为蛇形通道的一半,其热有效性为蛇形通道的1.9倍。
In this paper, the flow boiling heat transfer model in the congested small tree-shaped channel was established. The flow boiling heat transfer characteristics of the tree-shaped channel network were numerically studied. The pump boiling power was dissipated in the serpentine channel with the same heat transfer area and inlet diameter, Flow boiling pressure drop, channel temperature change and thermal effectiveness indicators such as performance comparison. The results show that, compared with the serpentine channel, the channel has the advantages of low boiling pressure drop and low pump power consumption, and its temperature uniformity and thermal efficiency are better than the serpentine channel. When the heat flux is 20 W / cm ~ 2, the pump energy consumption of the fluid in the conformation-shaped channel is about half that of the serpentine channel, and its thermal effectiveness is 1.9 times that of the serpentine channel.