Heat and Mass Transport Processes

University of Melbourne

Course Description

  • Course Name

    Heat and Mass Transport Processes

  • Host University

    University of Melbourne

  • Location

    Melbourne, Australia

  • Area of Study

    Chemical Engineering

  • Language Level

    Taught In English

  • Prerequisites

    Students must have completed the following subjects prior to enrolling in this subject:

    CHEN20009 Transport Processes

    AND ONE OF:

    CHEN20008 Chemical Process Analysis 2
    CHEN20011 Chemical Process Analysis

    AND the following subject which may be taken concurrently:

    CHEM20018 Chemistry: Reactions and Synthesis

  • Course Level Recommendations

    Upper

    ISA offers course level recommendations in an effort to facilitate the determination of course levels by credential evaluators.We advice each institution to have their own credentials evaluator make the final decision regrading course levels.

    Hours & Credits

  • Credit Points

    12.5
  • Recommended U.S. Semester Credits
    3 - 4
  • Recommended U.S. Quarter Units
    4 - 6
  • Overview

    AIMS
    This subject aims to extend the fundamental concepts of heat transfer from that covered in CHEN20009 Transport Processes to include natural and forced convection and two phase systems. Mass transfer concepts are extended to unsteady state mass transfer and Fick's Second Law, prediction of diffusivity and of mass transfer coefficients. These fundamental concepts are then applied to the design of processes and equipment including shell and tube, air-cooled and plate heat exchangers, evaporator systems, membrane devices, binary distillation systems, gas absorbers and cooling towers. Experience in the use of appropriate simulation packages such as HYSYS for exchanger and distillation column design are included. This simulation work builds on the skills developed in CHEN20009 Chemical Process Analysis 2.
    INDICATIVE CONTENT
    Forced Convection: Use of heat transfer correlations to predict coefficients
    Heat Exchange: concept of an overall heat transfer coefficient, fouling factors; determination of the area required for a given heat duty, Heat exchanger design. Use of simulation packages such as HYSYS and ASPEN
    Free convection: discussion and application of Grashof Number and other dimensionless groups
    Condensation and Boiling: Fundamentals. Evaporation: various evaporator types and their advantages and disadvantages (forced circulation, film types); multiple and single effects; backward and forward feed; boiling point elevation; mechanical recompression; evaporator energy balances
    Mass Transfer: Unsteady state mass transfer and Fick's Second Law; prediction of diffusivity; dimensional analysis and equations of change for mass transfer
    Distillation: single-stage separations, equilibrium flash, differential distillation; multistage separations, operating lines, reflux; binary distillation, varying reflux ratio, minimum reflux, total reflux, optimum reflux, feed plate location, side streams, open steam; tray efficiency via overall and Murphree efficiencies. Use of simulation packages such as HYSYS
    Gas absorption: basic mass transfer mechanism; material balances, co-current and countercurrent flow, limiting L/G ratio; multistage absorption and the absorption factor method; continuous contact, transfer units, height of a transfer unit, calculation of number of transfer units. Humidification and cooling tower height calculation
    Membrane Systems: Microfiltration, ultrafiltration, nanofiltration and reverse osmosis. Gas separation systems. Robeson?s bound. Electrodialysis and pervaporation. Membrane selection.
    INTENDED LEARNING OUTCOMES (ILOs)
    On completion of this subject the student is expected to:
    Be able to apply the principles of heat transfer to solve heat transfer problems, particularly those involving two phase systems
    Be able to assess quantitatively the performance of heat exchanger and evaporation equipment
    Be able to apply the principles of mass transfer to solve mass transfer problems and to membrane separation processes
    Be able to describe the concepts of equilibrium stage and continuous contactor analysis and apply these concepts to simple distillation and gas absorption problems
    Be able to assess quantitatively the performance of simple, conventional distillation, gas absorption, membrane and cooling tower equipment
    Be able to use simulation and spreadsheet software for the basic design of heat exchangers, absorption equipment, cooling towers and distillation columns.
    Assessment:
    A written assignment (5%) of approximately 1000 words. Due in week 10, requiring approximately 5 - 6 hours of work. ILO 6 is addressed in the assignment
    Attendance and participation in two laboratory classes held between weeks 3 - 11, each with a written assignment of approximately 1000 words (5% each) and each requiring around 4 hours of work. ILOs 2 and 4 are addressed in these laboratory classes. Assignments are due in week 8 and 12
    One written 90-minute test (15%). ILOs 1 and 2 are addressed in the test. Held between weeks 5 - 7
    One written 3-hour closed book end-of-semester examination (70%). Intended Learning Outcomes (ILOs) 1 to 5 are addressed in the exam.
    Hurdle requirement: The examination is a hurdle and must be passed to pass the subject.

Course Disclaimer

Courses and course hours of instruction are subject to change.

Credits earned vary according to the policies of the students' home institutions. According to ISA policy and possible visa requirements, students must maintain full-time enrollment status, as determined by their home institutions, for the duration of the program.