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Compact Air-to-Air Thermosyphon Heat Exchanger

机译：紧凑型空对空热虹吸热交换器

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摘要

Outdoor cabinets containing power electronics components need to be cooled effectively and at the same time protected from outside air, which may contain moisture and various kinds of dirt that would reduce the reliability of the electronics. Air-to-air heat exchangers are widely used in the industry as they are cost-competitive and easy to install and maintain. On the other hand, they are inefficient and bulky. ABB holds a patent on a cost-effective modular compact thermosyphon-based air-to-air heat exchanger for power electronics cabinets. This technology uses numerous multiport extruded tubes with capillary-sized channels disposed in parallel to achieve the desired compactness. The heat exchanger is made of a stack of thermosyphon units to cope with the required heat loads. The experimental performance of this novel power electronics cooling system with R134a was measured for a single unit and a stack of thermosyphons. The influence of different parameters such as the heat load, fluid filling ratio, air temperature, and flow rate were investigated. A numerical model was developed in order to predict the performance of the thermosyphon unit and stack for various and changing operating conditions. Prediction shows good agreement with the experimental results.
机译：包含电力电子组件的室外机柜需要有效冷却，同时要防止外界空气进入，这些外部空气可能包含水分和各种污垢，从而降低电子设备的可靠性。空对空换热器具有成本竞争力且易于安装和维护，因此在行业中得到了广泛使用。另一方面，它们效率低下且笨重。 ABB拥有一种用于电力电子机柜的经济高效的模块化紧凑型基于热虹吸的空对空热交换器的专利。这项技术使用了许多多端口挤压管，这些毛细管平行设置了毛细管大小的通道，以实现所需的紧凑性。热交换器由一堆热虹吸单元构成，以应对所需的热负荷。对于一个单元和一堆热虹吸管，测量了带有R134a的这种新型电力电子冷却系统的实验性能。研究了热负荷，流体填充率，空气温度和流量等不同参数的影响。为了预测热虹吸单元和烟囱在各种变化的工作条件下的性能，开发了一个数值模型。预测结果与实验结果吻合良好。

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  • 来源
    《Heat Transfer Engineering》 |2015年第18期|1419-1425|共7页
  • 作者

    BRUNO AGOSTINI; MATHIEU HABERT;

  • 作者单位

    ABB Ltd. Switzerland, Corporate Research, Segelhofstrasse 1K, 5405, Daettwil, Switzerland;

    ABB Ltd. Switzerland, Corporate Research, Daettwil, Switzerland;

  • 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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