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首页> 外文期刊>International Journal of Heat and Mass Transfer >Experimental study on heat transfer characteristics in static flash evaporation of aqueous NaCl solution
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Experimental study on heat transfer characteristics in static flash evaporation of aqueous NaCl solution

机译：NaCl水溶液静态闪蒸传热特性的实验研究。

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摘要

An experimental study of heat transfer characteristics in static flash evaporation of aqueous NaCl solution was presented. Experiments were conducted using initial concentration of water film that varied from 0 to 0.26 (saturated at room temperature), initial height of 0.1 to 0.4 m, and superheat ranging from 1.8 to 49.5 K. Flash evolutions of pure water and aqueous NaCl solution were obtained during static flash evaporation. Influences of crystals on non-equilibrium fraction (NEF) and volumetric heat transfer coefficient were analyzed. Results suggested that the duration of fast evaporation was long, and NEF with crystallization reached a low equilibrium value. Crystallization correction factor φ was introduced to modify fitting formula NEF in the cases where crystallization occurred. A minimum value of volumetric heat transfer coefficient existed with the rise of f_(m0) because of the crystals. The f_(m0) that corresponds to the minimum volumetric heat transfer coefficient decreased with the increase of ΔT.
机译：提出了NaCl水溶液静态闪蒸过程中传热特性的实验研究。实验使用的水膜初始浓度在0到0.26之间变化（在室温下饱和），初始高度在0.1到0.4 m之间，过热度在1.8到49.5 K之间。获得了纯水和NaCl水溶液的闪蒸析出在静态闪蒸过程中。分析了晶体对非平衡分数（NEF）和体积传热系数的影响。结果表明，快速蒸发的持续时间长，并且具有结晶作用的NEF达到较低的平衡值。在发生结晶的情况下，引入结晶校正因子来修改拟合公式NEF。由于晶体的存在，随着f_（m0）的增加，存在体积传热系数的最小值。与最小体积传热系数相对应的f_（m0）随着ΔT的增加而减小。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2016年第11期|1093-1099|共7页
  • 作者

    Qingzhong Yang; Bingchao Zhao; Dan Zhang; Yu Wang; Junjie Yan;

  • 作者单位

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China,School of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, PR China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China;

    State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, PR 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

    Crystallization; Static flash evaporation; Non-equilibrium fraction (NEF); Volumetric heat transfer coefficient;

    机译：结晶;静态闪蒸;非平衡分数（NEF）;体积传热系数;

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