An improved film evaporation correlation for saline water at sub-atmospheric pressures
KAUST DepartmentWater Desalination and Reuse Research Center (WDRC)
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AbstractThis paper presents an investigation of heat transfer correlation in a falling-film evaporator working with saline water at sub-atmospheric pressures. The experiments are conducted at different salinity levels ranging from 15000 to 90000 ppm, and the pressures were maintained between 0.92 to 2.81 kPa (corresponds to saturation temperatures of 5.9 – 23 0C). The effect of salinity, saturation pressures and chilled water temperatures on the heat transfer coefficient are accounted in the modified film evaporation correlations. The results are fitted to the Han & Fletcher's and Chun & Seban's falling-film correlations which are used in desalination industry. We modify the said correlations by adding salinity and saturation temperature corrections with respective indices to give a better agreement to our measured data.
CitationAn improved film evaporation correlation for saline water at sub-atmospheric pressures.AIP Conference Proceedings 1440 , 1085 (2012); doi: 10.1063/1.4704324
Conference/Event name4th International Meeting of Advances in Thermofluids, IMAT 2011