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首页> 外文期刊>Applied thermal engineering: Design, processes, equipment, economics >Experimental and numerical heat transfer analysis of heat-pipe-based CPU coolers and performance optimization methodology
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Experimental and numerical heat transfer analysis of heat-pipe-based CPU coolers and performance optimization methodology

机译：基于热管的CPU冷却器和性能优化方法的实验和数值传热分析

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This paper presents an experimental and numerical heat transfer analysis of heat-pipe-based CPU coolers and a performance optimization methodology. The first part of the study focuses on the performance of two commercial HP-based CPU coolers under inclination angles of 0 degrees, 90 degrees and 180 degrees. The results show that the 90 degrees orientation provides the best thermal performance. The influence of heat pipe orientation on the performance of the entire system is obscured due to the much higher thermal resistance on the air-side of the cooler. A fourfold increase in air volumetric flow rate has only a minor effect on the cooling performance enhancement with a reduction of the thermal resistance from 0.11 K W-1 to 0.074 K W-1 at the highest heating power. In the second part of the study, heat transfer numerical simulations of the finned part of a cooler were performed and validated using experimental results. The output of the simulation is a 2-D temperature field, which is used as an input for the optimization methodology based on fin effectiveness and fin efficiency. Optimizing the fin geometry by removing unnecessary material yielded a 23% increase of the fin efficiency and decreased the weight of a fin by approx. 30%, proving the usefulness of the proposed methodology, which helps reduce costs, weight and development time of finned HP-based coolers.
机译：本文介绍了基于热管的CPU冷却器的实验和数值传热分析和性能优化方法。研究的第一部分侧重于在0度，90度和180度的倾斜角度下的两个基于HP的CPU冷却器的性能。结果表明，90度方向提供了最佳的热性能。由于冷却器的空气侧的热阻较高，热管取向对整个系统性能的影响被遮挡。空气体积流量的四倍增加对冷却性能提高的微小影响，在最高加热功率下减少了0.11k W-1至0.074k W-1的热阻。在研究的第二部分中，使用实验结果进行并验证冷却器的翅片部分的传热数值模拟。模拟的输出是2-D温度场，其基于FIN效率和鳍效率用作优化方法的输入。通过去除不必要的材料来优化翅片几何形状，产生翅片效率的23％，并降低了鳍片的重量。 30％，证明了所提出的方法论的有用性，有助于降低基于HP的惠普的降温机的成本，体重和开发时间。

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