Heat and Mass Transfer
Course Objectives:
The objective of this course is to develop the knowledge about system, heat transfer processes and its application on thermal system. The subject also focuses on basic principles of heat transfer viz. conduction, convection and radiation. After completing the course, one is expected to have sound knowledge regarding heat transfer and its applications in industries
 Conduction (4 hours)
 Derivation of general three dimensional conduction equation in Cartesian coordinate, special cases
 Discussion on 3D conduction in cylindrical and spherical coordinate systems, no derivation
 One dimensional conduction equations in rectangular, cylindrical and spherical coordinates for plane and composite walls
 Overall heat transfer coefficient
 Thermal contact resistance
 Variable Thermal Conductivity (4 hours)
 Derivation for heat flow and temperature distribution in plane wall
 Critical thickness of insulation without heat generation
 Thermal resistance concept & its importance
 Heat transfer in extended surfaces of uniform crosssection without heat generation, Long fin, short fin with insulated tip and without insulated tip and fin connected between two heat sources
 Fin efficiency and effectiveness
 Numerical problems
 OneDimensional Transient Conduction (4 hours)
 Conduction in solids with negligible internal temperature gradient (Lumped system analysis)
 Use of Transient temperature charts (Heisler’s charts) for transient charts for transient conduction in semiinfinite solids
 Numerical Problems
 Finite Element Method (FEM) to solve onedimensional Heat conduction problem
 Concepts And Basic Relations In Boundary Layers (5 hours)
 Flow over a body velocity boundary layer; critical Reynolds number; general expressions for drag coefficient and drag force; thermal boundary layer; general expression for local heat transfer coefficient
 Average heat transfer Coefficient
 Nusselt number
 Flow inside a duct velocity boundary layer, hydrodynamic entrance length and hydro dynamically developed flow; flow through tubes (internal flow)(discussion only)
 Numericals based on empirical relation given in data handbook
 Free Or Natural Convection (5 hours)
 Application of dimensional analysis for free convection physical
 significance of Grash off number
 Use of correlations of free convection in vertical, horizontal and inclined flat plates, vertical and horizontal cylinders and spheres
 Numerical problems
 Forced Convections (5 hours)
 Applications of dimensional analysis for forced convection
 Physical significance of Reynolds, Prandtl, Nusselt and Stanton numbers
 Use of various correlations for hydro dynamically and thermally developed flows inside a duct, use of correlations for flow over a flat plate, over a cylinder and sphere
 Numerical problems
 Heat Exchangers (3 hours)
 Classification of heat exchangers; overall heat transfer coefficient, fouling and fouling factor; LMTD
 EffectivenessNTU methods of analysis of heat exchangers
 Numerical problems
 Condensation And Boiling (5 hours)
 Types of condensation (discussion only) Nusselt’s theory for laminar
 condensation on a vertical flat surface
 Use of correlations for condensation on vertical flat surfaces, horizontal tube and horizontal tube banks
 Reynolds number for condensate flow; regimes of pool boiling, pool boiling correlations.
 Numerical problems
 8Mass transfer definition and terms used in mass transfer analysis, Ficks First law of diffusion, and no numerical
 Radiation Heat Transfer (5 hours)
 Thermal radiation; definitions of various terms used in radiation heat transfer
 StefanBoltzman law, Kirchoff’s law, Planck’s law and Wein’s displacement law
 Radiation heat exchange between two parallel infinite black surfaces,
 between two parallel infinite gray surfaces
 Effect of radiation shield
 Intensity of radiation and\solid angle
 Lambert’s law; radiation heat exchange between two finite surfaces
 configuration factor or view factor
 Numerical problems
 Application of Heat Transfer
 Electronic Cooling
 Mechanical System Cooling
 Introduction to MicroElectronics Heat Transfer (2 hours)
Practical:
 Temperature measurement by using different contact and noncontact type instruments.
 Measurement of onedimensional heat conduction.
 Measurement of convection heat transfer using imperical formula.
 Measurement of Radiation heat transfer.
 Measurement of Nusselt number and Reynold number in condensation on horizontal tube.
 Demonstration of CPU cooling.
References
 Ozisik, “Heat transferA basic approach”, Tata Mc Graw Hill 2002
 K. Nag, “Heat transfer”, Tata Mc Graw Hill 2002
 K. Rajput, “Thermal Engineering”
Evaluation Scheme
The questions will cover all the chapters of the syllabus. The evaluation scheme will be as indicated in the table below:
Chapters 
Hours 
Marks Distribution* 
1 
4 
8 
2 
4 
8 
3 
4 
8 
4 
5 
10 
5 
5 
8 
6 
5 
8 
7 
3 
6 
8 
5 
8 
9 
5 
10 
10&11 
4 
6 
Total 
44 
80 
*Note: There may be minor deviation in mark distribution.
