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首页> 外文期刊>Journal of energy and power engineering >Compact Thermosyphon Heat Exchanger for Power Electronics Cooling
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Compact Thermosyphon Heat Exchanger for Power Electronics Cooling

机译：紧凑型热虹吸热交换器，用于电力电子设备冷却

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摘要

The heat losses density in power electronics products follows an ever increasing trend. Nowadays they reach 200 W/cm~2 at chip level and 50 W/cm~2 at heatsink base level. Water cooling is the most effective cooling method but unfortunately water is often undesired due to high voltages or costumer requirements. Two-phase cooling is a promising technology for electronics cooling. It allows using dielectric fluids in passive systems and still benefits from very high heat transfer coefficients. Thermosyphons are a particularly interesting technology in the field of power electronics because it is entirely passive and a simple equipment. ABB has developed a compact thermosyphon heat exchanger based on automotive technology, which uses numerous multi-port extruded tubes with capillary sized channels disposed in parallel and brazed to a heated base plate in order to achieve the desired compactness. The experimental performances of this novel power electronics cooling system are presented with R134a as a working fluid. The influence of several parameters on the performances was studied experimentally: coolant flow rate, coolant temperature, heat load and fluid filling.
机译：电力电子产品中的热损失密度呈不断增长的趋势。如今，它们在芯片级达到200 W / cm〜2，在散热器基础级达到50 W / cm〜2。水冷却是最有效的冷却方法，但是不幸的是，由于高压或客户要求，通常不希望使用水。两相冷却是电子冷却的有前途的技术。它允许在无源系统中使用介电液，并且仍然受益于极高的传热系数。热虹吸管是电力电子领域中特别有趣的技术，因为它完全是无源的并且是简单的设备。 ABB开发了一种基于汽车技术的紧凑型热虹吸热交换器，该热交换器使用了许多多端口挤压管，这些毛细管平行放置并钎焊到加热的基板上，具有毛细管尺寸的通道，以实现所需的紧凑性。 R134a作为工作流体展示了这种新型电力电子冷却系统的实验性能。实验研究了几个参数对性能的影响：冷却液流量，冷却液温度，热负荷和流体填充。

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