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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 >Experimental study of boiling heat transfer and flow characteristics in fin channels with variable cross section
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Experimental study of boiling heat transfer and flow characteristics in fin channels with variable cross section

机译：可变横截面翅片通道沸腾传热和流动特性的实验研究

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The object of this work is to investigate the boiling heat transfer performance of transverse serrated fin (TSF) channel and triangle perforated fin (TPF) channel in compact plate-fin heat exchanger. A series of boiling heat transfer performance tests are carried out for volume flow rate range of 0.03-0.3 m(3)/h and heat flux of 10-20 kW/m(2). The local and average heat transfer coefficient of TSF channel and TPF channel are examined. It indicates that both local and average boiling heat transfer coefficient of TSF channel was higher than that of TPF channel. The boiling heat transfer occurs in TSF channel at lower wall superheat. The growth rate of wall temperature significant declines significantly when heat flux is up to ONB point, which means the boiling heat transfer has happened. The rising rate of average boiling heat transfer coefficient h(ave) is smaller than that of the local boiling heat transfer coefficient Nut. (C) 2017 Elsevier Inc. All rights reserved.
机译：本作作品的目的是研究横向锯齿状翅片（TSF）通道和三角穿孔翅片（TPF）通道的沸腾传热性能在紧凑的板翅式热交换器中。 一系列沸腾的传热性能试验进行0.03-0.3米（3）/ h的体积流量范围，加热通量为10-20 kW / m（2）。 检查TSF通道和TPF通道的局部和平均传热系数。 表示TSF通道的局部和平均沸腾传热系数高于TPF通道的局部和平均沸腾传热系数。 沸腾的传热发生在下壁过热的TSF通道中。 当热通量高达ONB点时，壁温的生长速率显着下降，这意味着沸腾的热传递发生了。 平均沸腾传热系数H（AVE）的上升率小于局部沸腾传热系数螺母的速率。 （c）2017年Elsevier Inc.保留所有权利。

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