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# KTU B.Tech S6 Syllabus Mechanical Engineering

### ME302 Heat and Mass Transfer

MODULE I

Modes of Heat Transfer: Conduction: Fourier law of heat conduction-Thermal conductivity of solids, liquids and gases-Factors affecting thermal conductivity- Most general heat conduction equation in Cartesian, cylindrical and spherical coordinates One dimensional steady state conduction with and without heat generation conduction through plane walls, cylinders and spheres-variable thermal conductivity conduction shape factor- heat transfer through corners and edges. Critical radius of insulation.

MODULE II

Elementary ideas of hydrodynamics and thermal boundary layers-Thickness of Boundary layer-Displacement, Momentum and Energy thickness (description only).
Convection heat transfer: Newton’s law of cooling- Laminar and Turbulent flow, Reynolds Number, Critical Reynolds Number, Prandtl Number, Nusselt Number, Grashoff Number and Rayleigh’s Number. Dimensional analysis Buckingham’s Pi theorem- Application of dimensional analysis to free and forced convection- empirical relations- problems using empirical relations

FIRST INTERNAL EXAMINATION

MODULE III

Transient heat conduction-lumped heat capacity method. Fins: Types of fins – Heat transfer from fins of uniform cross sectional area- Fin efficiency and effectiveness. Boiling and condensation heat transfer(elementary ideas only),Introduction to heat pipe.

MODULE IV

Combined conduction and convection heat transfer-Overall heat transfer coefficient – Heat exchangers: Types of heat exchangers, AMTD, Fouling factor, Analysis of Heat exchangers- LMTD method, Correction factor, Effectiveness- NTU method, Special type of heat exchangers (condenser and evaporator, simple problems only)

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