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30.17 The experiment shown below is used to cstimate mass trans fer coefficients. In the presant experiment, two partions of f the with the inside of the tube are coated with napht halene, a volatile solid. The tube is maintained at 100°C and 1.0 atm total system h of pressure. At 100°C, the sublimation vapar piessure of solid naphthalene is 1.0 mmHg. The imer diameter of the tube is cale nate nner 2.0 cm. The total length of the tube is 100cm, and cach section of uble the tube bearing the naphthalene is 2.0cm, Air enters the tubc ata Bow ime g to ing Air + naphthalene vapor d=2 cm is on. 20 cm 100 cm Solid 20 cm naphthalene Air flow 4.5 g/min mass flow rate of 4.5 g/min. The measured outlet mole fraction 1 of naphthalene vapor in the exit of the tube is 0.0066, as determined by gas chromatography. The diffusion coefficient of naphthalene in air is 0.086 cm/sat 100 C and 1.0 atm total system pressure. At this temperature and pressure, thekinematic viscosity of air is 0.25 cm/s and the density of air is 9.5 x 104 g/cm a. Develop a material balance modd to predict the mole fraction of naphthalene vapor exiting the tube. b. Based on your moded and the data given in the problem statement, estimate k c. Now, evaluate the mass-trans fer coefficient using the appro- priate establi shed correlation and compare your results to part (b)

30.17 The experiment shown below is used to cstimate mass trans fer coefficients. In the presant experiment, two partions of f the with the inside of the tube are coated with napht halene, a volatile solid. The tube is maintained at 100°C and 1.0 atm total system h of pressure. At 100°C, the sublimation vapar piessure of solid naphthalene is 1.0 mmHg. The imer diameter of the tube is cale nate nner 2.0 cm. The total length of the tube is 100cm, and cach section of uble the tube bearing the naphthalene is 2.0cm, Air enters the tubc ata Bow ime g to ing Air + naphthalene vapor d=2 cm is on. 20 cm 100 cm Solid 20 cm naphthalene Air flow 4.5 g/min mass flow rate of 4.5 g/min. The measured outlet mole fraction 1 of naphthalene vapor in the exit of the tube is 0.0066, as determined by gas chromatography. The diffusion coefficient of naphthalene in air is 0.086 cm/sat 100 C and 1.0 atm total system pressure. At this temperature and pressure, thekinematic viscosity of air is 0.25 cm/s and the density of air is 9.5 x 104 g/cm a. Develop a material balance modd to predict the mole fraction of naphthalene vapor exiting the tube. b. Based on your moded and the data given in the problem statement, estimate k c. Now, evaluate the mass-trans fer coefficient using the appro- priate establi shed correlation and compare your results to part (b)

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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30.17

30.17 The experiment shown below is used to cstimate mass trans fer coefficients. In the presant experiment, two partions of f the with the inside of the tube are coated with napht halene, a volatile solid. The tube is maintained at 100°C and 1.0 atm total system h of pressure. At 100°C, the sublimation vapar piessure of solid naphthalene is 1.0 mmHg. The imer diameter of the tube is cale nate nner 2.0 cm. The total length of the tube is 100cm, and cach section of uble the tube bearing the naphthalene is 2.0cm, Air enters the tubc ata Bow ime g to ing Air + naphthalene vapor d=2 cm is on. 20 cm 100 cm Solid 20 cm naphthalene Air flow 4.5 g/min mass flow rate of 4.5 g/min. The measured outlet mole fraction 1 of naphthalene vapor in the exit of the tube is 0.0066, as determined by gas chromatography. The diffusion coefficient of naphthalene in air is 0.086 cm/sat 100 C and 1.0 atm total system pressure. At this temperature and pressure, thekinematic viscosity of air is 0.25 cm/s and the density of air is 9.5 x 104 g/cm a. Develop a material balance modd to predict the mole fraction of naphthalene vapor exiting the tube. b. Based on your moded and the data given in the problem statement, estimate k c. Now, evaluate the mass-trans fer coefficient using the appro- priate establi shed correlation and compare your results to part (b)
Transcribed Image Text:30.17 The experiment shown below is used to cstimate mass trans fer coefficients. In the presant experiment, two partions of f the with the inside of the tube are coated with napht halene, a volatile solid. The tube is maintained at 100°C and 1.0 atm total system h of pressure. At 100°C, the sublimation vapar piessure of solid naphthalene is 1.0 mmHg. The imer diameter of the tube is cale nate nner 2.0 cm. The total length of the tube is 100cm, and cach section of uble the tube bearing the naphthalene is 2.0cm, Air enters the tubc ata Bow ime g to ing Air + naphthalene vapor d=2 cm is on. 20 cm 100 cm Solid 20 cm naphthalene Air flow 4.5 g/min mass flow rate of 4.5 g/min. The measured outlet mole fraction 1 of naphthalene vapor in the exit of the tube is 0.0066, as determined by gas chromatography. The diffusion coefficient of naphthalene in air is 0.086 cm/sat 100 C and 1.0 atm total system pressure. At this temperature and pressure, thekinematic viscosity of air is 0.25 cm/s and the density of air is 9.5 x 104 g/cm a. Develop a material balance modd to predict the mole fraction of naphthalene vapor exiting the tube. b. Based on your moded and the data given in the problem statement, estimate k c. Now, evaluate the mass-trans fer coefficient using the appro- priate establi shed correlation and compare your results to part (b)
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