Objectives

To impart a fundamental knowledge of heat and mass transfer and their applications.

Course content

Introduction, One- and Two-dimensional steady and transient conduction, Forced convection over a horizontal flat plate and inside tubes, Natural Convection over a vertical flat plate. Mass Transfer. Boiling and Condensation, Heat Exchangers, Thermal Radiation.

Total number of lectures: 40

Lecturewise breakup

1. Introduction: 1 Lecture

2. Conduction: 10 Lectures

• Fourier’s law of heat conduction, derivation of heat conduction equation: special cases, thermal resistance concept, extended surfaces: fin effectiveness and fin efficiency, unsteady state heat conduction: lumped and distributed systems, Heisler charts, semi-infinite solids

3. Forced Convection: 8 Lectures

• Laminar forced convection: flow and heat transfer over an isothermal flat plate, concept of Nusselt number and heat transfer coefficient, similarity and integral solutions, turbulent forced convection over a flat plate: Reynolds and Colburn analogy for heat/momentum transfer, laminar heat transfer in tube flows: uniform wall heat flux and uniform wall temperature boundary conditions, heat transfer in turbulent tube flow: Dittus-Boelter correlation

4. Natural Convection: 4 Lectures

• Steady laminar natural convection on an isothermal vertical plate: similarity and integral solutions, correlations for turbulent natural convection various geometries

5. Mass Transfer: 3 Lectures

• Fick’s law, species continuity equation, analogy of heat and mass transfer

6. Boiling and Condensation: 3 Lectures

• Boiling: Pool boiling, Saturated pool boiling curve, Rohsenow’s nucleate boiling correlation, critical heat flux correlation, minimum heat flux and film boiling correlations

• Condensation: Dropwise and film condensation, Nusselt’s theory of laminar film condensation on a vertical plate; heat transfer correlations for transitional and turbulent condensation over a vertical plate

7. Heat Exchangers: 4 Lectures

• Various types of heat exchangers, derivation of LMTD expression, correction factor approach.

8. Thermal Radiation: 7 Lectures

• Introduction, Physical mechanism, Planck’s law, Stefan-Boltzmann law, Wien’s displacement law, emissivity, absorptivity, reflectivity, and transmissivity, Kirchhoff’s law, view factor, radiosity and irradiation, radiation exchange in a black and gray enclosure, electric circuit analogy, radiation shields and radiation heat transfer coefficient

Recommended books

Textbooks

1. Heat and Mass Transfer by Yunus A. Cengel (3rd Edition, Tata McGraw-Hill Edition, New Delhi, 2007)

Reference books

1. Fundamentals of Heat and Mass Transfer by Frank P. Incropera and David P. Dewitt (4th Edition, John Wiley & Sons, New York, 1998)

2. Heat Transfer by J.P. Holman (9th Edition, Tata McGraw-Hill Edition, New Delhi, 2004)

3. Heat Transfer by P.S. Ghoshdastidar (2nd Edition, Oxford University Press, New Delhi, 2012)

Proposing instructors: Dr. S. Khandekar, Dr. P.S. Ghoshdastidar, Dr. U. Madanan, Dr. A. K. Agarwal