OTTO H. YORK DEPARTMENT OF CHEMICAL, BIOLOGICAL AND
PHARMACEUTICAL ENGINEERING
Fall 2010 - ChE 370
HEAT AND MASS TRANSFER
Tuesday 1.45 -3.55 p.m, Friday 3.15-5.25 p.m
Room FMH106
PROF. M. XANTHOS
Phone: 4762; e-mail: xanthos@ njit.edu
Office: Tiernan Hall 378
Office hours: Tuesday 4.00 – 5.30 p.m
Catalog Description
The principles of heat and mass transfer in chemical engineering systems are covered. Steady and
unsteady heat transfer is examined with emphasis on the heat exchanger design. Mass transfer by steady
and unsteady molecular diffusion and turbulent convective mass transfer is studied
Course Outline
Section I (1 week)
- Review of syllabus, Schedule, Requirements
- Definitions, Units, Review (Temp., compositions, gas laws, mass, material balances, energy, heat).
(From 1.1, 1.2, 1.3, and 1.6)
- Introduction to Heat, Mass and Momentum transfer - General molecular transport equation- Transport
laws (from 2.3).
- Steady state heat transfer - Mechanisms of heat transfer (From 4.1)
- Fourier’s law of thermal conductivity - Convective heat-transfer coefficient (from 4.1)
- Thermal-electrical analogy (Hagen 2.2)
Section II (1.5 weeks)
- Steady state conduction through flat slab, hollow cylinder and hollow sphere (from 4.2)
- Steady state conduction through composite walls, materials in parallel - Combined convection and
conduction and overall coefficients, critical insulation thickness, conduction with internal heat
regeneration (from 4.3)
Section III (1.5 weeks)
- Unsteady-state heat conduction (from 5.1 and 5.2)
- Unsteady-state heat conduction in various geometries- charts, (from 5.3) - error function (Hagen,
others)
- Chilling and freezing of food and biological materials (from 5.5)
Test #1 - (0.5 week)
Section IV (1.5 week)
- Forced convection heat transfer inside pipes, LMTD (from 4.5))
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- Heat transfer outside various geometries in forced convection (from 4.6)
- Natural convection heat transfer (from 4.7)
- Dimensional Analysis- Buckingham Method -Dimensionless numbers (from 4.14, 3.11-13))
Section V (2 weeks)
- Boiling, condensation (from 4.8)
- Heat exchangers- fouling factors (from 4.9)
- Heat transfer in agitated vessels, scraped surface heat exchangers (from 4.13)
- Introduction to radiation heat transfer- Advanced principles (from 4.10, 4.11)
Mid term and review (1 week)
Section VI (2.5 weeks)
- Introduction to mass transfer, Fick’s law (from 6.1)
- Molecular diffusion in gases (from 6.2)
- Molecular diffusion in liquids (from 6.3)
- Molecular diffusion in biological solutions and gels (from 6.4)
- Molecular diffusion in solids (from 6.5)
Section VII (1.5 weeks)
- Unsteady-state diffusion (from 7.1)
- Convective mass transfer coefficients (from 7.2)
- Analogies among mass, heat, and momentum transfer (from 7.3)
- Diffusion of gases in porous solids and capillaries (from 7.6)
Review for final exam (1 week)
Final exam
Textbook: Transport Processes and Separation Process Principles, 4th Edition, C.J. Geankoplis, Prentice
Hall, Inc (2003). Additional sources of information: Heat transfer with Applications, K. D. Hagen,
Prentice Hall (1999), ISBN 0-13-520941-2; Heat transfer, J.P. Holman, 10thth Ed. McGraw-Hill,
Inc.;others.
Course notes: Course notes containing relevant sections of each Chapter of Geancoplis and other books
and problems will be posted at http://moodle.njit.edu
Prerequisites:
ChE 232, Math 222, ChE 260
Student evaluation: Test, 20%; Mid-term, 30%; Final Exam, 40%; Homework and class participation
10%.
Note: NJIT Honor Code will be upheld and any violations will be brought to the attention of the Dean of
Students. Students will be informed regarding modifications or deviations from the syllabus.
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