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. ekildeki gibi, zeri ak eimli duvarl silindirik bir tank ierisinde saf A SIVISI bulunmaktadr. Buharlama srasnda sivi-gaz ara yzeyinin ykseltisinin sabit kalaca ekilde tanka sv beslenmektedir. Mhendis olarak, A'nn sv yzeyden A ve B gaz karm ierisinde yaynma hzn merak etmekteyiz. Bunun iin A'nn gaz faz ierisinde deriiminin dalmn beli mek gerekmektedir. B gaznn A SIVISI ierisinde znrl ok dktr. A ve B gaz ideal bir gaz karm oluturmakta ve toplam basn sabit tutulmaktadr. A ve B arasnda kimyasal tepkime gereklememektedir. Student A Student B Student C DAB (m/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 iin varsaymlarnz yazarak aklaynz. b) [2 points/puan] For shell mass balance, in which direction of which coordinate system occurs mass transfer. Write down the boundary conditions. Ktle transferi kabuk denkliini iin, hangi koordinat sisteminde hangi yne ktle transferinin gerekletiini gsteriniz. Snr koullarn yaznz. c) [10 points/puan] Make shell mass balance for A A iin ktle transferi kabuk denkliini yaznz. 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 iin genel ak denkliini yaznz. A ve B'nin toplam aklar arasndaki iliki nedir? e) [5 points/puan] Calculate flux of A assuming the storage tank is placed in a small closed room a Depolama tanknn kk kapal bir alana yerletirildiini varsayarak A'nn aksn hesaplaynz. Gas B Liquid A b