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Introduction Lecture PE 313 Mass Transfer (I) Dr. Noha Said Yousef

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Instructor: Dr. Noha Said Yousef Room:E106 e-mail: nohaysf@yahoo.com Assistant: Eng. Aya Soliman Lecture: E 120 Wednesday from 10:30 to 12:30 Tutorial: E120 Sunday from 10:30 to 12:30 Office hours: Monday from 12:30 to 2:30 Wednesday from 12:30 to 2:30 Wednesday from 12:30 to 2:30 Thursday from 12:30 to 2:30 Thursday from 12:30 to 2:30 Prerequisites: PE 231 Heat transfer PETROCHEMICAL DEPARTMENT PE313 Mass Transfer (I) 3Cr [3. 2]

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Overall aims of course: The main objective of the course is to teach the students the following: - Molecular mass transfer. Estimation and measurement of diffusion coefficient, analogies among mass, heat and momentum transfer in turbulent flow. Interphase mass transfer, continuous two-phase transport, absorption drying.

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Intended learning outcomes of course (ILOs( a- Knowledge and understanding: a7-i Identify the Principles of transport phenomena. a7-ii Estimate Diffusion in gases, liquids and solids. a7-iii Identify different methods for evaluating diffusivities. a7-iv Define convective mass transfer a7-v Define Free and forced convection mass transfer. a7-vi Explain Simultaneous heat and mass transfer a7-vii List significant parameters in convective mass transfer a7-viii Summarize convective mass transfer correlations in different geometry systems a7-ix Identify gas absorption and its mechanism. a7-x Define the rate of gas absorption a8-I Explain the evaluation of absorber height based on both gas and liquid films a8-ii Explain the evaluation of number of transfer units in the absorber based on both gas and liquid films a8-ii Name equipments of gas absorption a8-iii Explain principles of drying and its practical application a8-vi Define the rate of drying a8-v List different drying equipments

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b- Intellectual skills: b1-I Calculate mass concentrations and total mass concentrations of different substances. b1-ii Determine molar concentrations and total molar concentration of different substances. b1-iii Determine both the mass fraction and the mole fraction of different substances. b1-iv Determine the average molecular weight of different substances b1-v Calculate the mass and mole average velocity. b1-vi Determine the diffusion velocity relative to the mass or mole average velocity. b1-vii Calculate the mass and molar flux(j and J). b1-viii Determine the Gas Mass Diffusivity using Herlisch-Felder equation. b1-ix Calculate the mass transfer coefficient.

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b6-I Determine the significant parameters in convective mass transfer ( Sc, and Le). b6-ii Determine the rate of absorption. b6-iii Determine of Overall coefficients in absorption process. b6-iv Calculate the number of transfer units in the absorption process. b6-v Determine of the height of an absorber. b6-vi Determine the number of plates by the use of absorption factor. b6-vii Determine the rate and time of drying. b6-viii Calculate the mass flow rate of dry air supplied to the dryer and the humidity of the exit air b6-ix Determine the diameter and length that should be specified for any proposed type of dryer.

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c- Professional and practical skills: c13-I Detect the parameters of molecular and convective mass transfer. c13-ii Design appropriate physical models and corresponding mathematical models for engineering systems involving transfer of mass. c13-iii Design any type of an absorber. c13-iv Design any type of a dryer.

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d- General and transferable skills: d1Communicate effectively, both orally and in writing. d5-I Follow computer skills d5-ii Extract information from published sources d5-iii practice presentations skills

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Course Outlines: Introduction to the course (1) Diffusion coefficient (1) Diffusion in gas mixtures (1) Solid mass diffusivity (1) significant parameters in convective mass transfer (1)

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Correlations for mass transfer from single spheres (1) Gas absorption (1) Conditions of equilibrium between liquid and gas (1) Drying (3-4)

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4– Teaching and learning methods 1-Lectures 2- Assignments 3- Quizzes 4- Reports 5-Tutorial Sessions 7- 5- Student assessment methods 1- Assignments to assess the student’s performance. 2- Quizzes to assess the follow-up 3- Reports to assess the report writing skills and research skills 4- Mid-term exam (9 th exam) to assess level of understanding 5- Final exam to assess the overall understanding of the course.

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Assessment : Mid-term20 marks quizzes 20 marks reports and assignments 10 marks Final Exam. 50 marks --------- 100

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6- List of references 6.1- Course notes Based on selected chapters collected from text books. 6.2- Textbook: COULSON AND RICHARDSONS;"CHEMICAL ENGINEERING", VOL 2, 5 th Ed. F.P. Incropera and D.P. Dewitt,” Fundamentals of heat and mass transfer’, 6 th Ed., John Wiley & Sons, New York, 2002. 6.3- Periodicals, Web sites, … etc

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