CHHATTISGARH SWAMI VIVEKANAND TECHNICAL UNIVERSITY, BHILAI (C G)
Semester: B.E. VII Sem. Branch: Mechanical Engg.
Subject: Heat & Mass Transfer
Total Theory Periods: 50 Total Tutorial Period: 12
Total Marks in End Semester Exam: 80
Minimum number of class tests to be conducted: 2
N.B. : – H.M.T. Data Book (PSG), Fifth Edition “Wiley Eastern Limited” Permitted in the Examination.
UNIT – I
Various modes of heat transfer, Fourier’s, Newton’s and Stefan Boltzman’s Law, Combined modes of heat transfer,
thermal transfer, thermal diffusivity, overall heat transfer coefficient.
The thermal conductivity of solids, liquids and gases, factors influencing conductivity measurement. The general
differential equation of conduction. One dimensional steady state conduction, linear heat flow through a plane and
composite wall, tube and sphere, critical thickness of insulation, Effect of variable thermal conductivity, Conduction
with heat generation in flat and cylinders.
UNIT – II
Conduction convection system, extended surfaces rectangular, triangular, circumferential and pin fins. General
conduction analysis, fins of uniform and non-uniform cross sectional area. Heat dissipated by a fin. Effectiveness
and efficiency of fins. Approximate solution. Design of fins for maximum heat transfer. Solution for different
boundary condition. Use of fin analysis for measuring temperature error of Thermometer.
Transient/Unsteady State Heat Conduction
System with negligible internal resistance, Lumped capacity method and its Validity. Unsteady state conduction
through finite and semi- infinite slab without surface resistance, convection boundary conditions. Solution through
UNIT – III
Physical Mechanism of Forced Convection, Dimensional analysis for forced convection, velocity and Thermal
Boundary layer, Flow over plates, Flow across cylinders and spheres, Flow in tubes, Reynold’s analogy.
Physical Mechanism of Natural Convection, Dimensional analysis of natural convection; empirical relationship for
Two Phase Heat Transfer
Boiling heat transfer, Pool boiling, boiling regimes and boiling curve, next transfer correlations in pool boiling.
Condensation heat transfer, Film condensation, derivation for the average heat transfer coefficient ‘h’ for the case of
laminar film condensation over vertical plate, Heat transfer correlation for inclined plates, vertical tubes, Horizontal
Different types of heat exchangers; Determination of heat exchanger performance, Heat exchanger transfer units,
Analysis restricted to parallel and counter flow heat exchanger (LMTD and NTU method)
Introduction, absorption and reflection of radiant energy, Emission, Radiosity and irradiation, Black and non black
bodies, Kirchoff’s law; intensity of radiation, radiation exchange between black surface, geometric configuration
factor. Grey body relation exchange between surface of unit configuration factors. Electrical analogy to simple
problems. Non-luminous gas radiation. Errors in temperature measurement due to radiation.
Introduction to Mass Transfer
Mass and mole concentrations, molecular diffusion, eddy diffusion, Molecular diffusion from an evaporating fluid
surface, Introduction to mass transfer in laminar and turbulent convection Combined heat and mass transfer, the
wet and dry bulb thermometer.
1. Heat Transfer – S.P. Sukhatme – TMH
2. Heat & Mass Transfer – D.S. Kumar – S.K. Kataria & Sons
3. Heat transfer- C P Arora, TMH
1. Heat & Mass Transfer – K. Kannan – Anuradha Agencies
2. Heat Transfer – J.P. Holman – TMH
3. Heat Transfer – A Practical Approach – Yunus A. Cengel – McG