다중효용방식 해수담수기의 성능특성에 관한 2차원 수치해석
Two-dimensional Numerical Analysis on the Performance of a Multi-effect Solar Distiller
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A tilted multiple-effect solar distiller was proposed and analyzed theoretically. The distiller consisted of a glass cover,number of parallel plates, and saline-soaked wicks contacted with the plates. The wick color contacted with the glass cover used blackto increase the absorptance of solar energy. A 2D numerical analysis model of heat and mass transfer was developed to analyze theoptimum operating and design conditions of the distiller. The parameters analyzed were the feeding flow rate of seawater, slope of thedistiller, and number of effects. The results showed that the distillate water flow rate depends strongly on the lower feeding rate ofseawater but is rarely affected by the decreasing rate of the seawater feed in the multi-effect section. The optimum numbers of effectswere founded to be 14-16, which was determined based on the productivity at the summer solstice. The total daily distillate productionwas predicted to be approximately 0.337, 3.18, and 7.80 kg/m2on the winter solstice, equinox, and summer solstice, respectively.
Abstract
A tilted multiple-effect solar distiller was proposed and analyzed theoretically. The distiller consisted of a glass cover,number of parallel plates, and saline-soaked wicks contacted with the plates. The wick color contacted with the glass cover used blackto increase the absorptance of solar energy. A 2D numerical analysis model of heat and mass transfer was developed to analyze theoptimum operating and design conditions of the distiller. The parameters analyzed were the feeding flow rate of seawater, slope of thedistiller, and number of effects. The results showed that the distillate water flow rate depends strongly on the lower feeding rate ofseawater but is rarely affected by the decreasing rate of the seawater feed in the multi-effect section. The optimum numbers of effectswere founded to be 14-16, which was determined based on the productivity at the summer solstice. The total daily distillate productionwas predicted to be approximately 0.337, 3.18, and 7.80 kg/m2on the winter solstice, equinox, and summer solstice, respectively.
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