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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Horizontal distribution of two-phase refrigerant in parallel flat mini-channels
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Horizontal distribution of two-phase refrigerant in parallel flat mini-channels

机译：平行扁平通道两相制冷剂的水平分布

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摘要

A literature survey revealed that no prior investigation has been conducted on the horizontal distribution of a two-phase refrigerant in mini-channel tubes, which may be of importance for the cooling of heat-generating objects. In this study, we investigated R-134a distribution into four flat tubes inside a horizontal plane. In order to simulate the battery of an electric vehicle, a 600-W power supply was used during our tests. Tests were conducted with mass fluxes ranging from 280 to 480 kg m(-2)s(-1) and an inlet quality of 0.2. The effects of inlet port orientation and heat exchanger inclination on flow distribution were investigated. Results indicated that the effects of heat exchanger inclination on flow distribution were more prevalent than those of inlet port orientation. However, these effects are weakened as mass flux increases. Flow distribution deteriorated as the inclination of the heat exchanger increased. Header pressure drop constituted a significant portion of heat exchanger pressure drop and became more pronounced as mass flux increased.
机译：文献调查显示，没有在迷你通道管中的两相制冷剂的水平分布上进行了现有的研究，这可能是对发热物体的冷却的重要性。在这项研究中，我们研究了R-134A分布到水平面内的四个平坦管。为了模拟电动车辆的电池，在我们的测试期间使用了600W的电源。用来自280至480kg m（-2）S（-1）的质量助熔剂进行测试，以及0.2的入口质量。研究了入口端口取向和热交换器倾斜对流动分布的影响。结果表明，热交换器倾斜对流动分布的影响比入口端口方向更普遍。然而，随着质量磁通量的增加，这些效果被削弱。随着热交换器的倾斜度增加，流量分布劣化。标题压降构成了大部分热交换器压降，随着质量磁通量的增加变得更加明显。

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