## AI6604 - HEAT AND MASS TRANSFER FOR AGRICULTURAL ENGINEERS (Syllabus) 2013-regulation Anna University

AI6604

HEAT AND MASS TRANSFER FOR AGRICULTURAL ENGINEERS

LPTC

3003

OBJECTIVES:
i. The course is intended to build up necessary background for the understanding of the physical behavior of the various modes of heat transfer, like, conduction, convection and radiation.
ii. To understand the application of various experimental heat transfer correlations in engineering calculations.
iii. To learn the thermal analysis and sizing of heat exchangers and to understand the basic concepts of mass transfer.

UNIT I

CONDUCTION

9+3

Basic concepts – Mechanism of heat transfer – Conduction, convection and radiation – General differential equation of heat conduction – Fourier law of conduction – Cartesian and cylindrical coordinates – one dimensional steady state heat conduction – Conduction through plane walls, cylinders and spherical systems – Composite systems – Conduction with internal heat generation – Extended surfaces – Unsteady heat conduction – Lumped analysis – Use of Heislers chart.

UNIT II

CONVECTION

9+3

Basic concepts – Convective heat transfer coefficients – Boundary Layer concept – Types of convection – Forced convection – Dimensional analysis – External flow – Flow over plates, Cylinders and spheres – Internal flow – Laminar and turbulent flow – Combined Laminar and turbulent flow – Flow over bank of tubes – Free convection - Dimensional analysis – Flow over vertical plates, horizontal plate, inclined plate, cylinders and spheres.

UNIT III

PHASE CHANGE HEAT TRANSFER AND HEAT EXCHANGERS

9+3

Nusselts theory of condensation – Pool boiling, flow boiling, correlations in boiling and condensation, types of heat exchangers – LMTD method of heat exchanger analysis – Overall heat transfer coefficient – Fouling Factors.

UNIT IV

9+3

Basic concepts, law of radiation – Stefan Boltsmann law, Kirchoff law – Block body radiation – Grey body radiation shape factor algebra – Electrical analogy – Radiation shields – introduction to gas radiation.

UNIT V

MASS TRANSFER

9+3

Basic concepts – Diffusion mass transfer – Fick‟s Law of diffusion – Steady state molecular diffusion – Convective mass transfer – Momentum, heat and mass transfer analogy – Convective mass transfer correlations.

TOTAL (L:45+T:15): 60 PERIODS

TEXT BOOKS:
1. Sachdeva, R.C., “Fundamentals of Engineering Heat and Mass Transfer”, New Age International, New Delhi, 1995.
2. Yadav, R., “Heat and Mass Transfer”, Central Publishing House, New Delhi, 1995.

REFERENCES:
1. Ozisik, M.H., “Heat Transfer”, McGraw Hill Book Co., New York, 1994.
2. Nag, P.K., “Heat Transfer”, Tata McGraw Hill Book Co., New Delhi, 2002.
3. Holman, J.P., Heat and Mass transfer, Tata McGraw Hill Book Co., New York, 2002.
4. Kothandaraman, C.P., “Fundamentals of Engineering Heat and Mass Transfer”, New Age International, New Delhi, 1998.
5. Incropera, F. P., and Dewitt, D. P., “Fundamentals of Engineering Heat and Mass Transfer”, John Wiley and Sons, New York, 1998.
6. Velraj, R., “Heat & Mass Transfer”, Ane Books, New Delhi, 2004.