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13.3-1. Gas-Permeation Membrane for Oxygenation. To determine the suitability of sili- cone rubber for its use as a membrane for a heart-lung machine to oxygenate blood, an experimental value of the permeability at 30°C of oxygen was obtained, where PM = 6.50 x 10 7 cm O, (STP)/(s cm2 cm Hg/mm). (a) Predict the maximum flux of O, in kg mol/s m? with an O2 pressure of 700 mm Hg on one side of the membrane and an equivalent pressure in the blood film side of 50 mm. The membrane is 0.165 mm thick. Since the gas film is pure oxygen, the gas film resistance is zero. Neglect the blood film resistance in this case. (b) Assuming a maximum requirement for an adult of 300 cm O, (STP) per minute, calculate the membrane surface area required in m2. (Note: The ac- tual area needed should be considerably larger since the blood film resist- ance, which must be determined by experiment, can be appreciable.) Ans. (b) 1.953 m2

13.3-1. Gas-Permeation Membrane for Oxygenation. To determine the suitability of sili- cone rubber for its use as a membrane for a heart-lung machine to oxygenate blood, an experimental value of the permeability at 30°C of oxygen was obtained, where PM = 6.50 x 10 7 cm O, (STP)/(s cm2 cm Hg/mm). (a) Predict the maximum flux of O, in kg mol/s m? with an O2 pressure of 700 mm Hg on one side of the membrane and an equivalent pressure in the blood film side of 50 mm. The membrane is 0.165 mm thick. Since the gas film is pure oxygen, the gas film resistance is zero. Neglect the blood film resistance in this case. (b) Assuming a maximum requirement for an adult of 300 cm O, (STP) per minute, calculate the membrane surface area required in m2. (Note: The ac- tual area needed should be considerably larger since the blood film resist- ance, which must be determined by experiment, can be appreciable.) Ans. (b) 1.953 m2

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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the percent resistance to diffusion in the liquid 13.3-1. Gas-Permeation Membrane for Oxygenation. To determine the suitability of sili- cone rubber for its use as a membrane for a heart-lung machine to oxygenate blood, an experimental value of the permeability at 30°C of oxygen was obtained, where PM 6.50 x 10-7 cm' O, (STP)/(s cm2 cm Hg/mm). (a) Predict the maximum flux of O, in kg mol/s m? with an O2 pressure of 700 mm Hg on one side of the membrane and an equivalent pressure in the blood film side of 50 mm. The membrane is 0.165 mm thick. Since the gas film is pure oxygen, the gas film resistance is zero. Neglect the blood film resistance in this case. (b) Assuming a maximum requirement for an adult of 300 cm O2 (STP) per minute, calculate the membrane surface area required in m2. (Note: The ac- tual area needed should be considerably larger since the blood film resist- ance, which must be determined by experiment, can be appreciable.) Ans. (b) 1.953 m2
Transcribed Image Text:the percent resistance to diffusion in the liquid 13.3-1. Gas-Permeation Membrane for Oxygenation. To determine the suitability of sili- cone rubber for its use as a membrane for a heart-lung machine to oxygenate blood, an experimental value of the permeability at 30°C of oxygen was obtained, where PM 6.50 x 10-7 cm' O, (STP)/(s cm2 cm Hg/mm). (a) Predict the maximum flux of O, in kg mol/s m? with an O2 pressure of 700 mm Hg on one side of the membrane and an equivalent pressure in the blood film side of 50 mm. The membrane is 0.165 mm thick. Since the gas film is pure oxygen, the gas film resistance is zero. Neglect the blood film resistance in this case. (b) Assuming a maximum requirement for an adult of 300 cm O2 (STP) per minute, calculate the membrane surface area required in m2. (Note: The ac- tual area needed should be considerably larger since the blood film resist- ance, which must be determined by experiment, can be appreciable.) Ans. (b) 1.953 m2
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