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首页> 外文期刊>Journal of Heat Transfer >Heat Transfer Characteristics of Oscillating Heat Pipe With Water and Ethanol as Working Fluids
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Heat Transfer Characteristics of Oscillating Heat Pipe With Water and Ethanol as Working Fluids

机译：以水和乙醇为工作液的振荡热管的传热特性

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摘要

In this paper, experiments were conducted to achieve a better understanding of the oscillating heat pipe (OHP) operating behavior with water and ethanol as working fluid. The experimental results showed that there existed a necessary temperature difference between the evaporator and the condenser section to keep the heat pipe working. The maximum effective conductivity of the water OHP reached up to 259 kW/m K, while that of the ethanol OHP is of 111 kW/m K. Not all the OHPs are operated in the horizontal operation mode. The heat transfer performance of the ethanol OHP was obviously af-fected by the filling ratio and the inclination angle but the influence law is irregular. The effect of the filling ratio and the inclination angle of the water OHP were smaller than that of the ethanol one. The heat transfer performance of the OHP was improved with increase of operating temperature. The startup characteristics of the OHP depended on the establishment of the integral oscillating process, which was determined by the oper-ating factors. The startup temperature of the ethanol OHP varied from 40℃ to 50℃ and that of the water, OHP varied from 40℃ to 60℃ without considering the horizontal operating mode. The water OHP showed a better performance and more stable heat transfer characteristics than the ethanol OHP, which had no obvious advantages of the startup capability as well.
机译：在本文中，进行了一些实验以更好地了解以水和乙醇为工作液的振荡热管（OHP）的运行行为。实验结果表明，蒸发器与冷凝器之间存在一定的温差，以保持热管正​​常工作。水OHP的最大有效电导率达到259 kW / m K，而乙醇OHP的最大有效电导率达到111 kW / mK。并非所有的OHP都在水平运行模式下运行。乙醇OHP的传热性能明显受填充比和倾角的影响，但影响规律不规则。水OHP的填充率和倾角的影响小于乙醇的影响。随着工作温度的升高，OHP的传热性能得到改善。 OHP的启动特性取决于整体振荡过程的建立，该过程由工作因素决定。乙醇OHP的启动温度在40℃至50℃之间变化，而水的OHP的启动温度在40℃至60℃之间变化，而不考虑水平运行模式。与乙醇OHP相比，水OHP表现出更好的性能和更稳定的传热特性，并且也没有明显的启动能力优势。

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  • 来源
    《Journal of Heat Transfer》 |2010年第12期|p.121501.1-121501.6|共6页
  • 作者

    Haizhen Xian; Yongping Yang; Dengying Liu; Xiaoze Du;

  • 作者单位

    School of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China;

    rnSchool of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China;

    rnInstitute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;

    rnSchool of Energy and Power Engineering, Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    oscillating heat pipe; heat transfer characteristics; water; ethanol;

    机译：振荡热管;传热特性;水;乙醇;

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