文献类型：期刊文献

英文题名：Microchannel Liquid-Cooled Heat Exchanger Based on a Nonuniform Lattice: Study on Structure Calculation, Formation Process, and Boiling Heat Transfer Performance

作者：Qian, Bo[1];Fan, Hongri[1];Liu, Gang[1];Zhang, Jianrui[2];Li, Pei[2]

机构：[1]Shanghai Univ Engn Sci, Sch Mech & Automot Engn, Shanghai 201620, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：14

期号：23

外文期刊名：MATERIALS

收录：;EI(收录号：20214911260358);WOS:【SCI-EXPANDED(收录号:WOS:000735325600001)】；

基金：This study was funded by the Key Project of Chinese National Programs for Fundamental Research and Development-Model Processing and Process Planning Software Project for Additive Manufacturing (2018YFB1105300)Universal Full-dimension Digital Model Project (2018YFB1105301) and National Natural Science Foundation of China (51705307), Open Project Program of the State Key Lab of CAD&CG (Grant No. A2015).

语种：英文

外文关键词：nonuniform lattice; selective laser melting (SLM); microchannel heat exchanger; boiling heat transfer; cell structure

摘要：A microchannel radiator is advantageous due to its high efficiency and large boiling heat transfer coefficient of two-phase flow. Based on the research of uniform lattice structures, this study proposed a microchannel heat exchanger with a nonuniform lattice structure. The calculation, optimal formation, and boiling heat transfer performance of the nonuniform lattice structure based on selective laser melting (SLM) were investigated, and heat exchange samples were successfully prepared using SLM. The porosity and pore morphology of the samples were analysed, and the contrast experiments of boiling heat transfer were conducted with deionised water. The results revealed that the heat flow density of the lattice structure was a minimum of 244% higher than that of the traditional liquid-cooled plate. The critical heat flux density of the lattice structure is 110 W center dot cm(-2), and the critical heat flux density of the traditional flat plate is 45 W center dot cm(-2). In addition, the effects of cell structures indicated that for frame cells, the heat transfer effect of nonuniform frames was inferior to that of uniform frames; for face-centred cubic (FCC) cells, the nonuniform and uniform frames exhibited the same trend. However, the heat flow density of FCC cells was 25% higher than that of frame structures.