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Optimal placement and sizing of heat sink attachments on a heat-generating piece for minimization of peak temperature
Thermochimica Acta ( IF 3.1 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.tca.2020.178645
M.R. Hajmohammadi , M. Mohammadifar , M. Ahmadian-Elmi

Abstract The lifespan of many components depends on their operating temperature. Heat sinks are used to extract heat from heat dissipating devices to avoid overheating and mechanical-electrical loss. Therefore, it is critical to optimally distribute the heat sink attachments to reach the minimum excess (peak) temperature. This paper documents the optimal location of heat sinks mounted on a heat-generating (electronic) piece. The optimization objective is to minimize the peak temperature when the total surface area of the attachments is fixed. Heat sink attachments are distributed on the top surface of the hot piece in several uniform and non-uniform arrangements. For each number of heat sources, the results show that there exists an optimal arrangement which thermally performs the best. In the case of two and three heat sinks, the optimal distributions are columnar and the triangular arrangements, respectively. The increase in the number of the heat sinks results in thermal performance improvement. The highest temperature of double heat sinks configuration is about 28% lower in comparison with the single heat sink. It is also indicated the thermal performance of the elongated shape is higher compared to the circular shape.

中文翻译:

散热片上散热器附件的最佳位置和尺寸,以最大限度地降低峰值温度

摘要 许多组件的寿命取决于它们的工作温度。散热器用于从散热设备中提取热量,以避免过热和机械-电气损失。因此,以最佳方式分布散热器附件以达到最小过量(峰值)温度至关重要。本文记录了安装在发热(电子)部件上的散热器的最佳位置。优化目标是在附件的总表面积固定时最小化峰值温度。散热器附件以几种均匀和不均匀的排列分布在热工件的顶面上。结果表明,对于每种热源数量,都存在热性能最佳的最佳布置。在两个和三个散热器的情况下,最佳分布分别是柱状和三角形排列。散热器数量的增加导致热性能改善。双散热器配置的最高温度比单散热器低约28%。还表明与圆形相比,细长形状的热性能更高。
更新日期:2020-07-01
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