Syllabus

CH 2304                                              HEAT TRANSFER                            L T P C  3 0 0 3

            AIM

To impart basic concepts of heat transfer thro’ different media.

OBJECTIVES

To gain knowledge in various heat transfer methodology in process engineering

and to design heat transfer equipments such as furnace, boilers, heat

exchangers evaporation etc.,

UNIT I                                           HEAT TRANSFER BY CONDUCTION                                                 9

Importance of heat transfer in Chemical Engineering operations - Modes of heat transfer

- Mean temperature difference.

Concept of heat conduction - Fourier's law of heat conduction - one dimensional steady

state heat conduction equation for flat plate, hollow cylinder, hollow sphere - Heat

conduction through a series of resistances - Analogy between flow of heat and flow of

electricity - Thermal conductivity measurement; effect of temperature on thermal

conductivity; conduction through liquids.

UNIT II                        FILM COEFFICIENTS AND THEIR APPLICATION                      9

Individual and overall heat transfer coefficients and the relationship between them -

Conduction with heat source - Two dimensional steady state conduction - Analytical and

graphical methods - Transient heat conduction.

UNIT III                                               CONVECTION                                                           9

Concept of heat transfer by convection - Natural and forced convection - Application of

dimensional analysis for convection - Equations for forced convection under laminar,

transition and turbulent conditions - Equations for natural convection - Heat transfer from

condensing vapors, heat transfer to boiling liquids - Influence of boundary layer on heat

transfer - Heat transfer to molten metals - Heat transfer in packed and fluidized beds.

UNIT IV                                               HEAT EXCHANGERS                                              8

Parallel and counter flow heat exchangers - Log mean temperature difference - Single

pass and multipass heat exchangers; plate heat exchangers; use of correction factor

charts; heat exchangers effectiveness; number of transfer unit - Chart for different

configurations - Fouling factors and Wilson’s plot - Design of various types of heat

exchangers - Design of furnaces - Design of condensers, - Design of tubular reactors.

UNIT V                                    RADIATION AND EVAPORATION                                                 9

Concept of thermal radiations - Black body concept - Stefan Boltzmann’s law -concept of

grey body – radiation between surfaces.

Types of evaporation - single effect and multiple effect evaporation - Design calculation

for single and multiple effect evaporation.

                                                                                                            TOTAL : 45 PERIODS

TEXT BOOKS

1. McCabe, W.L., Smith, J.C., and Harriot, P., “Unit Operations in Chemical Engineering”, McGraw-Hill VII Edition 2004.

2. Binay K.Dutta “Heat Transfer Principles and Applications”, Prentice Hall of India, 2001.

REFERENCES

1. Harker J Coulson, J.M., Richardson, J.F., Backhurst J “Chemical Engineering”, Vol. I., Butterworth Heinman 1996.

2. Kern, D.Q., “Process Heat Transfer”, McGraw-Hill - Revised adition - 1999.