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首页> 外文期刊>International Journal of Heat and Mass Transfer >Experimental investigation of condensation heat transfer and pressure drop of R22, R410A and R407C in mini-tubes
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Experimental investigation of condensation heat transfer and pressure drop of R22, R410A and R407C in mini-tubes

机译：微型管中R22，R410A和R407C冷凝水传热和压降的实验研究

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摘要

Condensation heat transfer and pressure drop of R22, R410A and R407C were investigated experimentally in two single round stainless steel tubes with inner diameter of 1.088 mm and 1.289 mm. Condensation heat transfer coefficients and two phase pressure drop were measured at the saturation temperatures of 30 ℃ and 40 ℃. The mass flux varies from 300 to 600 kg/m~2 s and the vapor quality 0.1-0.9. The effects of mass flux and vapor quality were investigated and the results indicate that condensation heat transfer coefficients increase with mass flux and vapor quality, increasing faster in the high vapor quality region. The experimental data was compared with the correlations based on experimental data from large diameter tubes (d_h > 3 mm), such as the Shah and Akers correlations et al. Almost all the correlations overestimated the present experimental data, but Wang correlation and Yan and Lin correlation which were developed based on the experimental data from mini-tubes predicted present data reasonably well. Condensation heat transfer coefficients and two phase pressure drop of R22 and R407C are equivalent but both higher than those of R410A. As a substitute for R22, R410A has more advantages than R407C in view of the characteristics of condensation heat transfer and pressure drop.
机译：在两个内径分别为1.088毫米和1.289毫米的单圆不锈钢管中，对R22，R410A和R407C的冷凝传热和压降进行了实验研究。在30℃和40℃的饱和温度下测量了冷凝传热系数和两相压降。质量通量为300至600 kg / m〜2 s，蒸气质量为0.1-0.9。研究了质量通量和蒸汽质量的影响，结果表明，凝结换热系数随质量通量和蒸汽质量的增加而增加，在高蒸汽质量区域内冷凝水的传热系数增加更快。将实验数据与基于大直径管（d_h> 3 mm）的实验数据的相关性进行比较，例如Shah和Akers相关性等。几乎所有的相关性都高估了当前的实验数据，但是基于微型管的实验数据开发的Wang相关性和Yan和Lin相关性则很好地预测了当前数据。 R22和R407C的冷凝传热系数和两相压降相等，但均高于R410A。考虑到冷凝传热和压降的特性，作为R22的替代品，R410A比R407C具有更多优势。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第14期|p.3522-3532|共11页
  • 作者

    Hui-Yong Zhang; Jun-Ming Li; Na Liu; Bu-Xuan Wang;

  • 作者单位

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, 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

    condensation heat transfer; pressure drop; mini-tube; refrigerants;

    机译：冷凝传热压力下降;迷你管制冷剂;

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