Abstract Recent electronic industry developments require a variety of compact and high-performance heat sinks for the heat dissipation of electronic devices. In this paper, on the basis of a new type of heat pipe called the metal foam multichannel heat pipe (metal foam MCHP) proposed by our team, an experimental apparatus on its heat transfer characteristics was built. The heat transfer characteristics of the metal foam MCHP with the distilled water as the working fluid were experimentally investigated in a heat flux range of (18750-112500) W/m2, a filling ratio range of 0.1–0.6 and single-sided/double-sided heating modes. The experimental results showed that the working fluid could flow up and down in the metal foam MCHP, and thus the heat was transferred from the evaporation section to the condensation section during the operation. The thermal resistance of the metal foam MCHP decreased with the increase of the heat flux. When the heat flux was up to 112500 W/m2, the thermal resistance decreased to 0.142 °C/W. The optimal filling ratio of the metal foam MCHP charging with the distilled water was 0.2. During the experiment, the temperature fluctuations of each measuring point in the evaporation section were almost within 2 °C and the temperature differences of different measuring points in the evaporation section were within 8 °C. The thermal resistances of the metal foam MCHP under the single-side heating mode and the double-sided heating mode were compared, and the thermal resistance of the metal foam MCHP was found to be higher under the single-sided heating mode. In addition, compared with the traditional PHPs, the metal foam MCHP showed better heat transfer performance and better stability and uniformity of the evaporation temperature.

中文翻译：

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新型泡沫金属多通道热管传热性能及蒸发温度波动的实验研究

摘要 近年来，电子工业的发展需要各种紧凑、高性能的散热器来实现电子设备的散热。本文基于我组提出的一种新型热管——泡沫金属多通道热管（金属泡沫MCHP），搭建了其传热特性的实验装置。在(18750-112500)W/m2的热通量范围、0.1-0.6的填充率范围和单面/双面条件下，实验研究了以蒸馏水为工作流体的金属泡沫MCHP的传热特性。侧面加热模式。实验结果表明，工作流体可以在泡沫金属MCHP中上下流动，从而在运行过程中将热量从蒸发段传递到冷凝段。金属泡沫MCHP的热阻随着热通量的增加而降低。当热通量达到 112500 W/m2 时，热阻下降到 0.142 °C/W。充入蒸馏水的泡沫金属MCHP的最佳填充率为0.2。实验过程中，蒸发段各测点温度波动几乎在2℃以内，蒸发段各测点温差在8℃以内。比较了单面加热模式和双面加热模式下泡沫金属MCHP的热阻，发现单面加热模式下泡沫金属MCHP的热阻更高。此外，与传统的 PHP 相比，