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Thermal management of electronics devices with PCMs filled pin-fin heat sinks: A comparison

机译:具有PCM的针翅式散热器的电子设备的热管理:比较

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摘要

The present paper covers the comparison of two different configurations (square and circular) pin-fin heat sinks embedded with two different phase change materials (PCMs) namely paraffin wax and n-eicosane having different thermo-physical properties were carried out for passive cooling of electronic devices. The pin-fins, acting as thermal conductivity enhancers (TCEs), of 2 mm square and 3 mm circular fin thickness of constant volume fraction of 9% are chosen and input heat fluxes from 1.2 kW/m~2 to 3.2 kW/m2 with an increment of 0.4 kW/m~2 are provided. Two different critical set point temperatures (SPTs) 45 ℃ and 65 ℃ are chosen to explore the thermal performance in terms of enhancement ratios, enhancement in operation time, latent heating phase duration, thermal capacity and conductance. The results show that 3 mm diameter of circular pin-fins has the best thermal performance in passive thermal management of electronic devices.
机译:本文涵盖了两种嵌入两种不同相变材料(PCM)的针翅式散热器的比较,这些散热器具有被动冷却的两种相变材料(石蜡和正二十烷)。电子设备。选择用作导热系数(TCE)的2毫米见方的翅片和3毫米恒定体积分数为3毫米的圆形翅片,输入热通量从1.2 kW / m〜2到3.2 kW / m2,提供的增量为0.4 kW / m〜2。选择两种不同的临界设定温度(SPT):45℃和65℃,以提高比,延长运行时间,潜热阶段持续时间,热容量和电导率来探讨热性能。结果表明,直径3 mm的圆形针状散热片在电子设备的被动热管理中具有最佳的热性能。

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