Development of a model for spray evaporation based on droplet analysis

Q. Chen, K. Thu, T. D. Bui, Y. Li, K. C. Ng, K. J. Chua

研究成果: ジャーナルへの寄稿学術誌査読

41 被引用数 (Scopus)

抄録

Extreme flash evaporation occurs when superheated liquid is sprayed into a low pressure zone. This method has high potential to improve the performance of thermally-driven desalination plants. To enable a more in-depth understanding on flash evaporation of a superheated feed water spray, a theoretical model has been developed with key considerations given to droplet motion and droplet size distribution. The model has been validated against 14 experimental data sets from literature sources to within 12% discrepancy. This model is capable of accurately predicting the water productivity and thermal efficiency of existing spray evaporator under specific operating conditions. Employing this model, the effect of several design parameters on system performance was investigated. Key results revealed that smaller droplet enabled faster evaporation process while higher initial droplet velocity promoted water productivity. Thermal utilization marginally changes with the degree of superheat, which renders a quick design calculation of the brine temperature without the need for iterations.

本文言語英語
ページ(範囲)69-77
ページ数9
ジャーナルDesalination
399
DOI
出版ステータス出版済み - 12月 1 2016
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 化学工学(全般)
  • 材料科学(全般)
  • 水の科学と技術
  • 機械工学

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