| 摘要: |
| 液态工质在满足一定内径要求的毛细管内会形成稳定的液柱即气塞系统。本文提出利用蠕动泵驱动毛细管内气液相间隔的工质单向循环流动，形成一个具有脉动热管效应的新型两相传热系统。搭建了系统实验装置，以去离子水为工质，当毛细管内径为3 mm，管内工质流速恒定为7 m/min时，实验研究了不同充液率的两相传热系统在加热功率分别为60 W、80 W和100 W时的传热特性。结果表明：该传热系统的最佳充液率为20%，在加热功率为60、80、100 W时，充液率为20%的传热系统达到稳态时的热阻分别为0.52、0.38、0.30 ℃/W，相比于传统的水冷传热系统其热阻分别降低了32.5%、45.7%、50%。 |
| 关键词: 两相传热系统 蠕动泵 传热特性 充液率 毛细管 |
| DOI： |
| 投稿时间：2018-02-25 修订日期：2018-06-16
|
| 基金项目:广东省科技计划（2016B090918096）项目资助。 |
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| Performance of Capillary Loop Heat Transfer System Driven by Peristaltic Pump |
|
Mo Haijun1, Feng Chen1, Wan Zhenping1, Fu Yongqing2, Tang Yong1
|
| (1.School of Mechanical and Automotive Engineering, South China University of Technology;2.School of Design, South China University of Technology) |
| Abstract: |
| A stable liquid column-air plug system forms when liquid working fluid flows in a capillary tube that meets specific requirements for the inner diameter. In this paper, a novel two-phase heat transfer system with a pulsating heat pipe is proposed for the scenario in which a liquid-vapor two-phase working fluid in the capillary tube is driven by a peristaltic pump and one-way flow forms. The heat transfer characteristics of the system with different liquid filling ratios are investigated experimentally by a self-designed experimental setup with deionized water as the working fluid under 60 W, 80 W, and 100 W conditions. The inner diameter of the capillary tube is 3 mm, and the working fluid flows in a capillary tube with a constant flow rate of 7 m/min. The experimental results show that the optimum liquid filling ratio of the heat transfer system is 20%. When the heating power is 60 W, 80 W, and 100 W, the thermal resistance of the system with the optimum liquid filling ratio is 0.52 °C/W，0.38 °C/W, and 0.30 °C/W, respectively, which is reduced by 32.5%, 45.7%, and 50%, respectively, compared with that of the traditional water-cooled heat transfer system. |
| Key words: two-phase heat transfer system peristaltic pump heat transfer characteristic liquid filling ratio capillary tube |
