Heat and Mass Transport Processes
University of Melbourne
Area of Study
Taught In English
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
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.
Recommended U.S. Semester Credits3 - 4
Recommended U.S. Quarter Units4 - 6
Hours & Credits
OverviewAIMSThis 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 CONTENTForced Convection: Use of heat transfer correlations to predict coefficientsHeat 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 ASPENFree convection: discussion and application of Grashof Number and other dimensionless groupsCondensation 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 balancesMass Transfer: Unsteady state mass transfer and Fick's Second Law; prediction of diffusivity; dimensional analysis and equations of change for mass transferDistillation: 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 HYSYSGas 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 calculationMembrane 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 systemsBe able to assess quantitatively the performance of heat exchanger and evaporation equipmentBe able to apply the principles of mass transfer to solve mass transfer problems and to membrane separation processesBe able to describe the concepts of equilibrium stage and continuous contactor analysis and apply these concepts to simple distillation and gas absorption problemsBe able to assess quantitatively the performance of simple, conventional distillation, gas absorption, membrane and cooling tower equipmentBe 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 assignmentAttendance 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 12One written 90-minute test (15%). ILOs 1 and 2 are addressed in the test. Held between weeks 5 - 7One 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.
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.