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首页> 美国卫生研究院文献>Nanomaterials >Cooling Performance of a Novel Circulatory Flow Concentric Multi-Channel Heat Sink with Nanofluids
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Cooling Performance of a Novel Circulatory Flow Concentric Multi-Channel Heat Sink with Nanofluids

机译：具有纳米流体的新型循环流同心多通道散热器的冷却性能

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Heat rejection from electronic devices such as processors necessitates a high heat removal rate. The present study focuses on liquid-cooled novel heat sink geometry made from four channels (width 4 mm and depth 3.5 mm) configured in a concentric shape with alternate flow passages (slot of 3 mm gap). In this study, the cooling performance of the heat sink was tested under simulated controlled conditions.The lower bottom surface of the heat sink was heated at a constant heat flux condition based on dissipated power of 50 W and 70 W. The computations were carried out for different volume fractions of nanoparticles, namely 0.5% to 5%, and water as base fluid at a flow rate of 30 to 180 mL/min. The results showed a higher rate of heat rejection from the nanofluid cooled heat sink compared with water. The enhancement in performance was analyzed with the help of a temperature difference of nanofluid outlet temperature and water outlet temperature under similar operating conditions. The enhancement was ~2% for 0.5% volume fraction nanofluids and ~17% for a 5% volume fraction.
机译：来自诸如处理器之类的电子设备的散热需要高的散热率。本研究的重点是由四个通道（宽度4 mm，深度3.5 mm）配置为同心形状并具有交替的流动通道（间隙为3 mm的缝隙）制成的液冷新型散热器几何形状。在这项研究中，在模拟受控条件下测试了散热器的冷却性能。基于50 W和70 W的耗散功率，在恒定的热通量条件下对散热器的下底表面进行了加热。对于不同体积分数的纳米颗粒，即0.5％至5％，以水为基础液，流速为30至180 mL / min。结果表明，与水相比，纳米流体冷却散热器的排热率更高。在相似的操作条件下，借助纳米流体出口温度和出水温度的温差分析了性能的提高。对于体积分数为0.5％的纳米流体，增强为〜2％，对于体积分数为5％的增强为〜17％。

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