• 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 >Heat transfer correlations of refrigerant falling film evaporation on a single horizontal smooth tube
【24h】

Heat transfer correlations of refrigerant falling film evaporation on a single horizontal smooth tube

机译：制冷剂降膜蒸发在单个水平光滑管上的传热相关性

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

Falling film evaporation heat transfer of R134a and its potential substitutes R290 and R600a outside a single horizontal plain tube is experimentally investigated, and the effects of the saturation temperature, film flow rate and heat flux on heat transfer coefficient are studied. Heat transfer performance of R290 is slightly superior than that of R134a, while R600a is inferior than that of R134a. The threshold film Reynolds number is determined to separate the variation trend of HTC with film Reynolds number into full wetting and partial dryout regimes. Increase of heat flux benefits the heat transfer in both full-wetting and partial dry-out regimes. New heat transfer correlations based on the present data and data for R32 and R1234ze(E) in the authors' group are suggested for two regimes. The correlation for full wetting regime fits 96.7% of the total 542 correlated data within +/- 30% while fits 73.4% of the total 289 data in references from -30% to +15%, the correlation for partial dryout regime fits 97.5% of the total 162 correlated data within +/- 30% while fits 76.8% of the total 95 data from references within +/- 30%. (C) 2018 Published by Elsevier Ltd.
机译：实验研究了R134a及其潜在替代品R290和R600a在单个水平普通管外部的降膜蒸发传热，并研究了饱和温度，膜流量和热通量对传热系数的影响。 R290的传热性能略优于R134a，而R600a则不如R134a。确定阈值薄膜雷诺数是为了将HTC随薄膜雷诺数的变化趋势分为完全润湿和部分变干状态。热通量的增加有利于全湿和部分变干状态下的热传递。在两种情况下，建议基于当前数据以及作者小组中R32和R1234ze（E）的数据进行新的传热相关。完全润湿方案的相关性在+/- 30％之内拟合了542个相关数据的96.7％，而从-30％到+ 15％拟合了289个数据的73.4％，部分变干方案的相关性符合97.5％总共162个相关数据的+/- 30％以内，而来自参考文献的95个数据的76.8％则在+/- 30％内。 （C）2018由Elsevier Ltd.发布

著录项

  • 来源
  • 作者

    Jin Pu-Hang; Zhang Zhuo; Mostafa Ibrahim; Zhao Chuang-Yao; Ji Wen-Tao; Tao Wen-Quan;

  • 作者单位

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermofluid Sci & Engn MOE, Xian 710049, Shaanxi, 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

    Falling film evaporation; Nucleate boiling; Single horizontal plain tube; Heat transfer correlations;

    机译：降膜蒸发;核酸沸腾;单水平管;传热相关;

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