• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Flow boiling heat transfer, dry-out vapor quality and pressure drop of propane (R290): Experiments and assessment of predictive methods
【24h】

Flow boiling heat transfer, dry-out vapor quality and pressure drop of propane (R290): Experiments and assessment of predictive methods

机译：沸腾传热，干燥蒸气质量和丙烷压降（R290）：实验和预测方法的评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents two-phase flow boiling heat transfer coefficient, pressure drop and dry-out incipience vapor quality data for refrigerant R290 (propane) in a circular channel. The test section consists of a single, horizontal, circular stainless steel tube whose internal and external diameters are 6.0 mm and 8.0 mm, respectively, whereas its heated length is 193.7 mm and the heat is provided through Joule effect with DC current directly applied to the tube. The experiments are performed by changing the mass flux from 150 to 500 kg/m(2) s, the heat flux from 2.5 to 40.0 kW/m(2) and the saturation temperature, which has been fixed to 25, 30 and 35 degrees C. The effect of all the operating parameters on the experimental data is investigated and discussed. An assessment of predictive methods concerning two-phase heat transfer coefficient, pressure drop and dry-out vapor quality is then performed. The correlation of Bertsch et al. (2009) better fits the heat transfer coefficient data, with a Mean Absolute Error of 30%. The experimental dy--ut vapor qualities arefairlyfitted with the predictive methods-of Kim-and Mitclawar-(2013), with a Mean Absolute Error of 5.7%, whereas the separated flow method of Friedel (1979) returns the best predictions for the frictional pressure gradient, with a calculated Mean Absolute Error of 20.8%. Finally, a new flow boiling heat transfer coefficient prediction tool is proposed by modifying the correlation of Wojtan et al. (2005) to match with the present experimental database, obtaining a calculated Mean Absolute Error of 8.2% and a Mean Relative Error of -6.0%. (C) 2018 Elsevier Ltd. All rights reserved.
机译：本文介绍了圆形通道制冷剂R290（丙烷）的两相流沸腾传热系数，压降和干燥开始蒸气质量数据。测试部分由一根水平的圆形不锈钢管组成，其内径和外径分别为6.0 mm和8.0 mm，而其加热长度为193.7 mm，热量通过焦耳效应提供，直流电流直接施加于加热管。管。通过将质量通量从150更改为500 kg / m（2）s，将热通量从2.5更改为40.0 kW / m（2）并将饱和温度固定为25、30和35度来进行实验C.研究并讨论了所有运行参数对实验数据的影响。然后对涉及两相传热系数，压降和蒸发蒸气质量的预测方法进行评估。 Bertsch等人的相关性。 （2009年）更好地拟合了传热系数数据，平均绝对误差为30％。实验的动力蒸汽质量与Kim-和Mitclawar-（2013）的预测方法非常吻合，平均绝对误差为5.7％，而Friedel（1979）的分离流方法则得出了摩擦系数的最佳预测压力梯度，计算出的平均绝对误差为20.8％。最后，通过修改Wojtan等人的相关性，提出了一种新的流动沸腾传热系数预测工具。 （2005）与目前的实验数据库相匹配，获得了8.2％的计算平均绝对误差和-6.0％的平均相对误差。 （C）2018 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2018年第ptab期|1236-1252|共17页
  • 作者

    Lillo G.; Mastrullo R.; Mauro A. W.; Viscito L.;

  • 作者单位

    Univ Napoli Federico II, Dept Ind Engn, Ple Tecchio 80, I-80125 Naples, Italy;

    Univ Napoli Federico II, Dept Ind Engn, Ple Tecchio 80, I-80125 Naples, Italy;

    Univ Napoli Federico II, Dept Ind Engn, Ple Tecchio 80, I-80125 Naples, Italy;

    Univ Napoli Federico II, Dept Ind Engn, Ple Tecchio 80, I-80125 Naples, Italy;

  • 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

    Propane; R290; Flow boiling; Pressure drop; Dry-out;

    机译：丙烷;R290;沸腾;压降;甩干;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号