Condensation Heat Transfer of R-134a in Horizontal Straight and Helically Cooled Tubes

doi:10.3969/j.issn.0253-4339.2007.02.005

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Condensation Heat Transfer of R-134a in Horizontal Straight and Helically Cooled Tubes

更新时间：2025-09-03

- Condensation Heat Transfer of R-134a in Horizontal Straight and Helically Cooled Tubes
- Journal of Refrigeration Vol. 28, Issue 2, Pages: 23-26(2007)
- 作者机构：
  
  山东大学,济南,250061
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2007.02.005
  CLC：
- Published：2007
- 稿件说明：
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Condensation Heat Transfer of R-134a in Horizontal Straight and Helically Cooled Tubes[J]. Journal of Refrigeration, 2007, 28(2): 23-26.
DOI：

Condensation Heat Transfer of R-134a in Horizontal Straight and Helically Cooled Tubes[J]. Journal of Refrigeration, 2007, 28(2): 23-26. DOI： 10.3969/j.issn.0253-4339.2007.02.005.

摘要

对替代制冷剂R-134a在水平直管和螺旋管内的凝结换热特性进行了实验研究。在三个不同的冷凝温度（35℃、40℃和45℃）、制冷剂R-1Ma的质量流量变化范围为100-400kg／（m^2·s）和制冷剂的干度范围为0．1-0．8的条件下，实验得到了R-134a在水平直管和螺旋管内的凝结换热系数随R—134a的质量流量和干度的变化关系，并将水平直管和螺旋管内的凝结换热特性数据进行了对比。实验结果表明，R-134a在螺旋管内的凝结换热系数比直管的大4％。13．8％。

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Related Institution

山东大学能源与动力工程学院

[1]山东大学能源与动力工程学院,济南250061 [2]Hemispheric Center for Environmental Technology, Florida International University

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上海理工大学

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