Consider a pure liquid in an open cylindrical tank with a slightly tapered top as shown...
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Consider a pure liquid in an open cylindrical tank with a slightly tapered top as shown above. The apparatus is arranged in such a manner that the liquid-gas interface remains fixed in space as the evaporation takes place. As an engineer, we are interested in the rate of evaporation of A from the liquid surface into a gas mixture of A and B. For this purpose, it is necessary to determine the concentration distribution of A in the gas phase. Gas B is only slightly soluble in liquid A. A and B form ideal gas mixture and the total pressure is maintained constant. There is no chemical reaction between A and B. Şekildeki gibi, üzeri açık eğimli duvarlı silindirik bir tank içerisinde saf A SIVISI bulunmaktadır. Buharlaşma sırasında sivi-gaz ara yüzeyinin yükseltisinin sabit kalacağı şekilde tanka sıvı beslenmektedir. Mühendis olarak, A'nın sıvı yüzeyden A ve B gaz karışımı içerisinde yayınma hızını merak etmekteyiz. Bunun için A'nın gaz faz içerisinde derişiminin dağılımını beli mek gerekmektedir. B gazının A SIVISI içerisinde çözünürlüğü çok düşüktür. A ve B gazı ideal bir gaz karışımı oluşturmakta ve toplam basınç sabit tutulmaktadır. A ve B arasında kimyasal tepkime gerçekleşmemektedir. Student A Student B Student C DAB (m²/s) satPA (mm Hg) 0.135x104 58.6 0.071x104 60.2 0.586x10-4 47.5 a) [3 points/puan] Write all your assumptions for this system and explain Bu sistem için varsayımlarınızı yazarak açıklayınız. b) [2 points/puan] For shell mass balance, in which direction of which coordinate system occurs mass transfer. Write down the boundary conditions. Kütle transferi kabuk denkliğini için, hangi koordinat sisteminde hangi yöne kütle transferinin gerçekleştiğini gösteriniz. Sınır koşullarını yazınız. c) [10 points/puan] Make shell mass balance for A A için kütle transferi kabuk denkliğini yazınız. a (m) 1.25 1.45 1.85 d) [5 points/puan] Write down the general total flux equation for A. What is the relation between total fluxes of A and B? b (m) c (m) 0.4 2.10 0.6 2.50 0.8 2.75 A için genel akı denkliğini yazınız. A ve B'nin toplam akıları arasındaki ilişki nedir? e) [5 points/puan] Calculate flux of A assuming the storage tank is placed in a small closed room a Depolama tankının küçük kapalı bir alana yerleştirildiğini varsayarak A'nın akısını hesaplayınız. Gas B Liquid A b Consider a pure liquid in an open cylindrical tank with a slightly tapered top as shown above. The apparatus is arranged in such a manner that the liquid-gas interface remains fixed in space as the evaporation takes place. As an engineer, we are interested in the rate of evaporation of A from the liquid surface into a gas mixture of A and B. For this purpose, it is necessary to determine the concentration distribution of A in the gas phase. Gas B is only slightly soluble in liquid A. A and B form ideal gas mixture and the total pressure is maintained constant. There is no chemical reaction between A and B. Şekildeki gibi, üzeri açık eğimli duvarlı silindirik bir tank içerisinde saf A SIVISI bulunmaktadır. Buharlaşma sırasında sivi-gaz ara yüzeyinin yükseltisinin sabit kalacağı şekilde tanka sıvı beslenmektedir. Mühendis olarak, A'nın sıvı yüzeyden A ve B gaz karışımı içerisinde yayınma hızını merak etmekteyiz. Bunun için A'nın gaz faz içerisinde derişiminin dağılımını beli mek gerekmektedir. B gazının A SIVISI içerisinde çözünürlüğü çok düşüktür. A ve B gazı ideal bir gaz karışımı oluşturmakta ve toplam basınç sabit tutulmaktadır. A ve B arasında kimyasal tepkime gerçekleşmemektedir. Student A Student B Student C DAB (m²/s) satPA (mm Hg) 0.135x104 58.6 0.071x104 60.2 0.586x10-4 47.5 a) [3 points/puan] Write all your assumptions for this system and explain Bu sistem için varsayımlarınızı yazarak açıklayınız. b) [2 points/puan] For shell mass balance, in which direction of which coordinate system occurs mass transfer. Write down the boundary conditions. Kütle transferi kabuk denkliğini için, hangi koordinat sisteminde hangi yöne kütle transferinin gerçekleştiğini gösteriniz. Sınır koşullarını yazınız. c) [10 points/puan] Make shell mass balance for A A için kütle transferi kabuk denkliğini yazınız. a (m) 1.25 1.45 1.85 d) [5 points/puan] Write down the general total flux equation for A. What is the relation between total fluxes of A and B? b (m) c (m) 0.4 2.10 0.6 2.50 0.8 2.75 A için genel akı denkliğini yazınız. A ve B'nin toplam akıları arasındaki ilişki nedir? e) [5 points/puan] Calculate flux of A assuming the storage tank is placed in a small closed room a Depolama tankının küçük kapalı bir alana yerleştirildiğini varsayarak A'nın akısını hesaplayınız. Gas B Liquid A b
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