Effect of Sublimation of Ice on Evaporation Phenomenon of Ethanol Solution

DOI Web Site 参考文献11件
  • ASAOKA Tatsunori
    Department of Mechanical Engineering, Aoyama Gakuin University
  • OKADA Masashi
    Department of Mechanical Engineering, Aoyama Gakuin University
  • AIDA Kazuki
    Department of Mechanical Engineering, Aoyama Gakuin University

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Ice making method using evaporation of ethanol solution is useful to ice thermal storage system. In the method, ethanol solution is evaporated under low pressure condition, and ice is produced in it due to the latent heat of evaporation. From our previous experiment, it was found that ethanol concentration of vapor decreases when ice particles floats on the surface of the solution. In this study, the effect of sublimation of ice on the evaporation phenomenon of ethanol solution was investigated. In the experiment, the ethanol concentration of vapor in ice producing chamber was measured under the various conditions. As a result, it was found that the ethanol concentration of vapor significantly decreases due to formation of ice layer, which covers surface of the ethanol solution. It was also found that the amount of decrease in ethanol concentration of vapor mainly depends on thesurface area of the covering ice.

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