Test 1.pdf - UNIVERSITY OF ARIZONA DEPARTMENT OF CHEMICAL AND ENVIRONMENTAL ENGINEERING CHEE 303 \u2013 CHEMICAL ENGINEERING MASS TRANSFER FALL 2018 Test 1

Test 1.pdf - UNIVERSITY OF ARIZONA DEPARTMENT OF CHEMICAL...

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UNIVERSITY OF ARIZONA DEPARTMENT OF CHEMICAL AND ENVIRONMENTAL ENGINEERING CHEE 303 CHEMICAL ENGINEERING MASS TRANSFER FALL 2018 Test 1 September 18 Problem 1(50%) Pure nitrogen gas at 1 atm flows over the 0.5 m2surface of liquid acetone in an open tank. The acetone temperature is maintained at 290 K, at which the acetone vapor pressure is 0.213 atm. The convective mass transfer coefficient for the mass transfer of acetone vapor into the nitrogen stream is 'kc= 0.025 m/s. The density of liquid acetone at 290 K is 780 kg/m3, and its molecular weight is 58.1 g/mol. If the initial depth of liquid acetone in the tank is 0.05 m, determine the time required to completely evaporate the acetone. Problem 2(50%) A cylindrical container made of glass is used to store nuclear waste. The container diameter is d = 15 cm and it is filled with nuclear waste to a height h1 = 3 cm (see figure). The overhead space

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