Heat and Mass Transfer

Syllabus:

INTRODUCTION (02 Hours)

Modes of heat transfer, conduction, convection and radiation.

CONDUCTION (10 Hours)

Fourier’s law. General three dimensional heat conduction equation in cartesion, cylindrical and spherical co - ordinates. One dimensional steady conduction through plane wall, cylinder and sphere. Heat source systems in plane wall and cylinder. Heat transfer from fins of uniform cross section. Two dimensional steady state conduction through plane wall. One dimensional unsteady state heat conduction.

CONVECTION (14 Hours)

Free and forced convection.

Forced Convection: Energy integral equation of the boundary layer on a flat plate and integral solution for evaluation of heat transfer from a fluid friction and heat transfer, Similarity conditions in heat transfer, processes, and dimensional analysis. Free Convection from a vertical flat plate, Grashoff number, Empirical relations and their use. Fundamentals of boiling & condensation heat transfer.

RADIATION (08 Hours)

Thermal radiation, monochromatic and total emissive power. basic laws of radiation. Radiation shape factors, black and grey surfaces, heat transfer in presence of re-radiating surfaces.

HEAT EXCHANGERS (06 Hours)

Basic types of heat exchangers, fouling factors, LMTD, Effectivene ss – NTU methods of design.

MASS TRANSFER (05 Hours)

Fick’s laws of diffusion, diffusion in dilute solutions in stationary media, one dimensional diffusion in gases with one component stationary. Convective mass transfer: Forced diffusion from a flat plate. Simulation of heat and mass transfer.

(Total Lecture Hours: 45 + Tutorial Hrs: 15)

PRACTICALS

1. Calibration of the thermocouple

2. Heat transfer through composite wall

3. Thermal conductivity of insulating powder

4. Heat transfer in Natural convection

5. Emissivity Measurement

6. Heat transfer in Force convection.

7. Determine the Stefan-Boltzmen constant

8. Heat transfer from pin fin

9.To determine LMTD, heat transfer rate and overall heat transfer coefficient of shell and tube type heat

exchanger.

BOOKS RECOMMENDED

1. S.P. Sukhatme, “Heat Transfer”, Universities Press (India), 2005.

2. J.P. Holman, “Heat Transfer”, McGraw Hill, 2003.

3. E.R.G. Eckert and Robert M. Drake, “Heat and Mass Transfer”, McGraw Hill, 1996.

4. Chapman A.J., “Heat Transfer”, Macmillan, New York, 2000.

5. Kothandraman. C.P., “Fundamentals of Heat and Mass transfer ”, New Age International, 2006.

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