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首页> 外文期刊>Applied thermal engineering: Design, processes, equipment, economics >Effects of non-condensable gas on the performance of oscillating heat pipe, part II: Experimental study
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Effects of non-condensable gas on the performance of oscillating heat pipe, part II: Experimental study

机译：不可凝气体对振荡热管性能的影响，第二部分：实验研究

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In this paper, we investigate the effects of non-condensable gas (NCG) on the flow characteristics of liquid slugs-vapor plugs and heat transfer performance (lambda(eff)) of oscillating heat pipe (OHP), experimentally, in order to validate our simulation results of part I. The experimental results show that NCG decreases the heat transfer performance of OHP, which are the same with our simulation results. From experimental results, NCG increases the time-average temperature of heating section. This means that the liquid slugs enter the heating section less frequent (bubbles generation is also less frequent), then the total amount of evaporation and total amount of heat transfer through working fluid decrease. In the adiabatic section, NCG decreases the fluctuation of wall temperature, which means that the motion of liquid slugs and vapor plugs becomes less active. And in the cooling section, NCG decreases the fluctuation and also time-average of wall temperature, which means that NCG obstacles the condensation. The experimental results also show that the effects of NCG on the heat transfer performance of OHP are smaller than that of the loop heat pipe and conventional heat pipe, which agree and validate our simulation results. (C) 2014 Elsevier Ltd. All rights reserved.
机译：在本文中，我们通过实验研究了不凝性气体（NCG）对液体塞-蒸气塞的流动特性和振荡热管（OHP）的传热性能（lambda（eff））的影响，以验证我们的第一部分仿真结果。实验结果表明，NCG降低了OHP的传热性能，与我们的仿真结果相同。从实验结果来看，NCG提高了加热段的时间平均温度。这意味着液体团块进入加热部分的频率降低（气泡产生的频率也降低），然后蒸发的总量和通过工作流体的传热总量降低。在绝热部分，NCG降低了壁温的波动，这意味着液团和蒸气塞的运动变得不太活跃。在冷却段中，NCG减小了壁温的波动，并且减小了壁温的时间平均，这意味着NCG阻碍了冷凝。实验结果还表明，NCG对OHP传热性能的影响要小于回路热管和常规热管，这证明并验证了我们的仿真结果。 （C）2014 Elsevier Ltd.保留所有权利。

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