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首页> 外文期刊>Applied thermal engineering: Design, processes, equipment, economics >Performance of open pore metal foam heat sinks fabricated with thermally sprayed interface
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Performance of open pore metal foam heat sinks fabricated with thermally sprayed interface

机译：带热喷涂界面的开孔金属泡沫散热器的性能

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In this paper, the result of an experimental study on thermal performance of different metal foam heat sinks is presented and compared with conventional solid heat sink. Experiments were performed on aluminum metal foams having 93% porosity with pore density of 4 and 8 PPI (i.e. pores per inch). The forced convection results show that heat sink with thermal spray coating outperforms a thermally glued sample with up to 9.8% more temperature drop under same operating test conditions. Air flow speed variations reveal that heat transfer rate changes significantly with the variation of air speed. Further studies with multiple fin samples show that 45 is the best orientation between the heat sink and the flow for maximum heat dissipation. For a single fin, the best orientation is 90. Results show that power dissipation at a fixed fin base temperature is an appropriate metrics for comparing thermal performance of metal foam heatsinks. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文介绍了对不同金属泡沫散热器的热性能进行实验研究的结果，并将其与常规固体散热器进行了比较。在孔隙率为93％，孔密度为4和8 PPI（即每英寸孔数）的铝泡沫金属上进行了实验。强制对流结果表明，在相同的操作测试条件下，具有热喷涂涂层的散热器的性能比热粘合的样品好，其温降最多可增加9.8％。空气流速的变化表明，传热率随空气速度的变化而显着变化。对多个散热片样品的进一步研究表明，45是散热片和气流之间的最佳方向，以实现最大的散热。对于单个散热片，最佳方向为90。结果表明，固定散热片基本温度下的功耗是比较金属泡沫散热器的热性能的合适指标。 （C）2016 Elsevier Ltd.保留所有权利。

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