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Experimental Investigation of Cooling Performance of Metal-Based Microchannels

机译：金属基微通道冷却性能的实验研究

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摘要

Metal-based microchannel heat exchangers (MHEs) are of current interest due to the combination of high heat transfer performance and improved mechanical integrity. Efficient methods for fabrication and assembly of functional metal-based MHEs are essential to ensure the economic viability of such devices. Al- and Cu-based high-aspect-ratio microscale structures (HARMS) have been fabricated through molding replication using metallic mold inserts. Such metallic HARMS were assembled through eutectic bonding to form Al- and Cu-based MHEs, on which heat transfer tests were conducted to determine the overall cooling rate and time constants. Electrically heated Cu blocks were placed outside the MHEs and provided a constant flux, and water flowing within the microchannels acted as the coolant. Experimental results show a great influence of the type of metal, flow rate, and the surrounding conditions on the overall cooling performance of the MHEs.
机译：由于高传热性能和改进的机械完整性的结合，金属基微通道热交换器（MHE）是当前的关注点。用于制造和组装功能金属基MHE的有效方法对于确保此类设备的经济可行性至关重要。基于铝和铜的高纵横比微尺度结构（HARMS）已通过使用金属模具插件进行模制复制而制成。这种金属HARMS通过共晶键合形成基于Al和Cu的MHE，然后在其上进行传热测试以确定总体冷却速率和时间常数。将电加热的Cu块放置在MHE的外部并提供恒定的通量，并且在微通道内流动的水充当冷却剂。实验结果表明，金属类型，流速和周围条件对多相热交换器的整体冷却性能有很大影响。

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  • 来源
    《Heat Transfer Engineering》 |2010年第6期|P.485-494|共10页
  • 作者

    PRITISH R. PARIDA; FANGHUA MEI; JING JIANG; WEN JIN MENG; SRINATH V. EKKAD;

  • 作者单位

    Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia, USA;

    Department of Mechanical Engineering, Louisiana State University, Baton Rouge, Louisiana, USA;

    Department of Mechanical Engineering, Louisiana State University, Baton Rouge, Louisiana, USA;

    Department of Mechanical Engineering, Louisiana State University, Baton Rouge, Louisiana, USA;

    Department of Mechanical Engineering, 106 Randolph Hall, Virginia Tech, Blacksburg, VA 24061, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    A_1: constant; A_2: constant; D_h: microchannel hydraulic diameter (μm); T: temperature (℃); t: time (s);

    机译：A_1：常量;A_2：常数;D_h：微通道水力直径（μm）;T：温度（℃）;t：时间（秒）;

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