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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effect of miscible oil on flow boiling heat transfer characteristic of ammonia in a 4 mm small tube
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Effect of miscible oil on flow boiling heat transfer characteristic of ammonia in a 4 mm small tube

机译：混溶油对4 mm小管中氨流沸腾传热特性的影响

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摘要

The present work aims to investigate the effect of miscible oil on the flow boiling heat transfer characteristic of ammonia in a 4 mm horizontal smooth tube. In contrast to conventional immiscible oil leading to serious deterioration in heat transfer, the results show that the miscible oil with oil concentration of 1.95% has almost no influence on the heat transfer. For the higher oil concentrations (i.e., 3.99% and 5.78%), the heat transfer coefficient of ammonia-oil mixture also appears to be remarkably similar to that of oil-free condition first, and then shows a slight deterioration trend when the vapor quality is high. Meanwhile, 13 heat transfer correlations are evaluated, and the comparison results indicate the Gungor and Winterton correlation (1987) could give a fair prediction for the experimental data even though it is developed for turbulent flow. Finally, a new correlation is developed with consideration of laminar flow and thermophysical properties change, and it can remarkably improve the prediction accuracy for the experimental data.
机译：本工作旨在研究可混溶油对4 mm水平光滑管中氨的沸腾传热特性的影响。与常规的不混溶油导致传热严重恶化的结果相反，结果表明，油浓度为1.95％的混溶油几乎不影响传热。对于较高的油浓度（即3.99％和5.78％），氨-油混合物的传热系数也似乎与无油条件下的传热系数显着相似，然后在蒸气质量出现轻微的恶化趋势。高。同时，评估了13个传热相关性，比较结果表明，即使是针对湍流而开发的Gungor和Winterton相关性（1987年）也可以对实验数据给出合理的预测。最后，考虑层流和热物理性质变化，建立了一种新的相关性，可以显着提高实验数据的预测精度。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2020年第2期|118978.1-118978.13|共13页
  • 作者

    Yuping Gao; Ye Feng; Shuangquan Shao; Changqing Tian;

  • 作者单位

    CAS Key Laboratory of Cryogenics Technical Institute of Physics and Chemistry Beijing 100190 China Beijing Key Laboratory of Thermal Science and Technology Technical Institute of Physics and Chemistry CAS Beijing 100190 China;

    College of Energy Engineering Zhejiang University Hangzhou 30027 China;

    CAS Key Laboratory of Cryogenics Technical Institute of Physics and Chemistry Beijing 100190 China Beijing Key Laboratory of Thermal Science and Technology Technical Institute of Physics and Chemistry CAS Beijing 100190 China School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan 430074 China;

    CAS Key Laboratory of Cryogenics Technical Institute of Physics and Chemistry Beijing 100190 China Beijing Key Laboratory of Thermal Science and Technology Technical Institute of Physics and Chemistry CAS Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 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

    Ammonia; Miscible oil; Flow boiling heat transfer; Small tube; Correlation;

    机译：氨;混溶油;流沸腾传热;小管;相关性;

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