Heat Transfer Capacity of Lotus-type Porous Copper Heat Sink for Air Cooling
Heat Transfer Capacity of Lotus-type Porous Copper Heat Sink for Air Cooling
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DOI：
10.1299/jtst.5.222
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发表时间：
2010-01-01
影响因子：
1.2
通讯作者：
Nakajima, Hideo
中科院分区：
文献类型：
--
作者：
Chiba, Hiroshi;Ogushi, Tetsuro;Nakajima, Hideo
具有许多直孔的莲花型多孔金属作为散热器很有吸引力，因为由于孔的直径较小而获得较大的传热能力。利用孔径均匀的模型计算了莲花型多孔铜散热器的传热能力。然而，实际的莲花型多孔金属具有孔径分布。在本工作中，我们通过考虑莲花型多孔铜翅片横截面孔径的实际测量结果的尺寸分布，研究了莲花型多孔铜翅片模型（非均匀孔模型）。莲花型多孔铜散热器传热特性的预测与实验数据吻合良好。此外，非均匀孔隙模型预测的传热系数也与均匀孔隙模型吻合良好。由此可见，莲花型多孔铜散热器的传热特性可以通过均匀孔隙模型进行预测。
Lotus-type porous metal with many straight pores is attractive as a heat sink because larger heat transfer capacity is obtained due to the small diameter of the pores. The heat transfer capacity of the lotus-type porous copper heat sink was calculated using the model with the pores of uniform diameters. However, actual lotus-type porous metals have a distribution of pore diameter. In the present work, we investigated the lotus-type porous copper fin model (non-uniform pore model) by considering size distribution of measured on the actual measurement of the pore diameters on a cross-section of the lotus-type porous copper fin. Prediction of the heat transfer characteristics for the lotus-type porous copper heat sink shows a good agreement with the experimental data. In addition, the predicted heat transfer coefficient of non-uniform pore model also shows a good agreement with the uniform pore models. Thus, it is clarified that the heat transfer characteristic of the lotus-type porous copper heat sink can be predicted by the uniform pore model.