U18ME604 HEAT TRANSFER
Class: B. Tech. VI-Semester Branch: Mechanical Engineering (ME)
Teaching Scheme: Examination Scheme:
L T P C Continuous Internal Evaluation 40 marks
3 - - 3 End Semester Exam 60 marks
Course Learning Objectives (LOs):
This course will develop students’ knowledge in/on…
LO1: modes of heat transfer, conduction and extended surfaces
LO2: lumped systems and forced convection heat transfer
LO3: free convection, boiling, condensation and heat exchangers
LO4: thermal radiation and radiative heat exchange between two bodies
UNIT – I (9)
Introduction: Basic modes of heat transfer; Fourier’s law of heat conduction, Newton’s law of
cooling, Stefan-Boltzmann’s law of thermal radiation; thermal conductivity and thermal
resistance
Conduction: General heat conduction equation in cartesian, cylindrical and spherical coordinate
systems; thermal diffusivity; boundary and initial conditions; one-dimensional steady state heat
conduction without heat generation in plane walls, cylinders and spheres; composite systems;
critical thickness of insulation; one-dimensional steady state heat conduction with internal heat
generation in plane walls, cylinders and spheres
Extended Surfaces: Types and applications; one-dimensional heat conduction equation for
uniform cross-sectional area - infinitely long fin and fin of finite length with insulated tip;
efficiency and effectiveness
UNIT – II (9)
Transient Heat Conduction: Definition of lumped system; governing differential equation for
lumped system; significance of Biot and Fourier number; time constant and response of
thermocouple
Convection: Mechanisms of free and forced convective heat transfer; physical significance of
dimensionless parameters - Reynolds, Prandtl, Nusselt, Stanton, Peclet, Grashof and Rayleigh’s
number; dimensional analysis - Buckingham’s π theorem for forced and free convection
Forced Convection:
External Flow - Concepts of hydrodynamic and thermal boundary layers; use of empirical
correlations for convective heat transfer - flat plate and cylinders
Internal Flow - Concepts of hydrodynamic and thermal boundary layers; use of empirical
correlations for convective heat transfer - horizontal pipe
UNIT – III (9)
Free Convection: Development of hydrodynamic and thermal boundary layers along a vertical
plate; use of empirical correlations for convective heat transfer – vertical plate
Boiling and Condensation: Heat transfer accompanied by phase change; regimes of pool boiling
and flow boiling; film and drop wise condensation
Heat Exchangers: Classification - parallel flow, counter flow and cross flow heat exchangers,
condensers and evaporators; logarithmic mean temperature difference; NTU-effectiveness
UNIT – IV (9)
Thermal Radiation: Definitions and concepts - monochromatic and total emissive powers;
absorptivity, reflectivity and transmissivity; black and gray surfaces; emissivity; Kirchhoff’s law,
Planck’s distribution law, Wein’s displacement law, Lambert’s cosine law
Radiative Heat Exchange Between Two Bodies: configuration factor; large parallel plates, equal
parallel and opposite squares, rectangular plates perpendicular to each other; heat exchange
between large parallel plates of different emissivity; gray body radiation - large parallel plates,
concentric cylinders and spheres, small body in a large enclosure, concept of shape and surface
resistances, re-radiating surfaces, radiation shields
Textbook:
[1] R. C. Sachdeva, Fundamentals of Engineering Heat and Mass Transfer, 5th ed. New Delhi: New
Age International Pvt. Ltd., 2015. (Chapters 1, 2, 3, 5, 6, 7, 8, 9, 10,11,12)
Reference Books:
[1] J. P. Holman and Souvik Bhattacharyya, Heat Transfer, 10th ed. New Delhi: McGraw Hill
Education (India) Pvt. Ltd., 2011.
[2] Frank P. Incropera, David P. Dewitt, Theodore L. Bergman and Adrienne S. Lavine,
Incropera’s Principles of Heat and Mass Transfer, New Delhi: Wiley India Pvt. Ltd., 2018.
[3] Yunus A Cengel and Afshin J Ghajar, Heat and Mass Transfer-Fundamentals and Applications,
5th ed. New Delhi: McGraw Hill, 2015.
[4] P.K. Nag, Heat and Mass Transfer, 3rd ed. New Delhi: Tata McGraw Hill Education Pvt. Ltd.,
2011.
[5] P.S. Ghoshdastidar, Heat Transfer, 2nd ed., New Delhi: Oxford University Press, 2012.
[6] S. K. Som, Introduction to Heat Transfer, New Delhi: PHI Learning Pvt. Ltd., 2008.
[7] Sarit K. Das, Fundamentals of Heat and Mass Transfer, New Delhi: Narosa Publishing House
Pvt. Ltd., 2010.
Data Book:
[1] C. P. Kothandaraman and S. Subramanian, Heat and Mass Transfer Data Book, 9th ed. New
Delhi: New Age International Pvt. Ltd., 2018.
Note: Heat and Mass Transfer Data Books are permitted into the exam hall.
Course Learning Outcomes (COs):
On completion of this course, students will be able to…
CO1: analyze heat conduction problems for various geometries
CO2: analyze transient problems using the lumped capacitance method & forced convection problems
CO3: analyze free convection problems, boiling, condensation and design heat exchangers
CO4: estimate the radiation heat transfer between surfaces
Course Articulation Matrix (CAM): U18ME604 HEAT TRANSFER
CO PO PO PO PO PO PO P P P PO PO PO PS PS
1 2 3 4 5 6 O7 O8 O9 10 11 12 O1 O2
CO1 U18ME604. 2 2 2 1 - - - - - 1 - 1 1 1
1
CO2 U18ME604. 2 2 2 1 - - - - - 1 - 1 1 1
2
CO3 U18ME604. 2 2 2 1 - - - - - 1 - 1 1 1
3
CO4 U18ME604. 2 2 2 1 - - - - - 1 - 1 1 1
4
U18ME604 2 2 2 1 - - - - - 1 - 1 1 1
