Abstract This study implies experimental investigation for optimization of heat transfer in electronic integrated circuits using close packed phase change materials (PCMs) filled pin-fin heat sinks. The aim of this study is to find the most efficient pin-fin configuration filled with optimum PCM to extend the operating range of electronic circuits. The experimental methodology is based upon variation of pin-fin configurations in rectangular, round and triangular cross-sections. Each configuration is allowed a pin-fin volumetric percentage of 9%. For analysis using PCM a volume fraction of 90% is maintained and six PCMs with different thermo-physical properties (varying melting temperatures, latent heats and heat capacities) are selected. These include paraffin wax, RT-54, RT-44, RT-35HC, SP-31 and n-eicosane. Moreover, the power levels mimicking heat input range between 5 W and 8 W. The resulting information is analyzed for the performance of a heat sink with and without PCM. Besides that, PCM ascendency is manipulated in terms of operational time, enhancement ratios, Stefan number and storage ratio. The outcomes suggest that triangular pin-fins are found to be the most effective pin-fin configuration for heat transfer both with and without PCM.

中文翻译：

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电子产品的热管理：各种 PCM 的三角形、矩形和圆形针翅式散热器的实验分析

摘要 这项研究意味着使用密堆积相变材料 (PCM) 填充针翅式散热器优化电子集成电路中的热传递的实验研究。本研究的目的是找到填充最佳 PCM 的最有效 pin-fin 配置，以扩展电子电路的工作范围。实验方法基于矩形、圆形和三角形横截面中针翅结构的变化。每个配置允许有 9% 的针翅体积百分比。对于使用 PCM 的分析，保持 90% 的体积分数并选择具有不同热物理特性（不同的熔化温度、潜热和热容量）的六种 PCM。这些包括石蜡、RT-54、RT-44、RT-35HC、SP-31 和正二十烷。而且，模拟热输入范围的功率水平介于 5 W 和 8 W 之间。分析结果信息以了解具有和不具有 PCM 的散热器的性能。除此之外，PCM 优势在操作时间、增强率、Stefan 数和存储率方面受到操纵。结果表明，无论是否使用 PCM，三角形针翅都是最有效的热传递的针翅配置。