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R14 flow condensation heat transfer performance: Measurements and modeling based on two-phase flow patterns

机译：R14流动冷凝传热性能：基于两相流模式的测量和建模

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摘要

An experimental investigation on flow condensation heat transfer characteristics of tetrafluoromethane (R14) in a horizontal smooth tube with inner diameter of 4 mm was carried out. Experiments were implemented at mass fluxes from 200 to 650 kg/(m(2) s), saturation pressures from 1 to 3 MPa and heat fluxes from 8.3 to 28.2 kW/m(2) over the entire range of vapor quality. The effects of saturation pressure, mass flux, heat flux and vapor quality were analyzed and discussed. In addition, R14 experimental data were compared with fifteen well-known flow condensation heat transfer correlations. Based on the comparison result and experimental data, an improved flow pattern-based heat transfer correlation was proposed and predicted R14 experimental data well with a mean absolute relative deviation of 6.26%. Finally, 1370 data points from nine published literature were adopted to evaluate the predictive ability of this new model. It achieves a satisfactory predicting result with a mean absolute relative deviation of 20.04% and 77.61% of the experimental data within the deviation bandwidth of 30%. (C) 2019 Elsevier Ltd. All rights reserved.
机译：对内径为4 mm的水平光滑管中四氟甲烷（R14）的流动冷凝传热特性进行了实验研究。在整个蒸汽质量范围内，以200至650 kg /（m（2）s）的质量通量，1至3 MPa的饱和压力和8.3至28.2 kW / m（2）的热通量进行实验。分析并讨论了饱和压力，质量通量，热通量和蒸汽质量的影响。此外，将R14实验数据与15个众所周知的流动冷凝传热相关性进行了比较。基于比较结果和实验数据，提出了一种改进的基于流型的传热相关性，并很好地预测了R14实验数据，平均绝对相对偏差为6.26％。最后，采用了来自9个已发表文献的1370个数据点来评估该新模型的预测能力。在30％的偏差带宽内，它的平均绝对相对偏差为实验数据的20.04％和77.61％，可获得令人满意的预测结果。 （C）2019 Elsevier Ltd.保留所有权利。

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  • 来源
  • 作者

    Song Qinglu; Chen Gaofei; Xue Hanwen; Zhao Yanxing; Gong Maoqiong;

  • 作者单位

    Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China|Univ Chinese Acad Sci, Beijing 100049, Peoples R 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

    Tetrafluoromethane (R14); Flow condensation heat transfer; Horizontal tube; Correlation;

    机译：四氟甲烷（R14）;冷凝水传热;水平管;相关;

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