HD9 : HEAT TRANSFER

1.PRINCIPLES OF HEAT TRANSFER

Introduction, Modes of Heat Transfer, Fourier Law of Heat Conduction, Newtion’s Law of Cooling for Convection, Thermal Radiation , Electrical Analogy, Heat Transfer by Combined Modes and Through Composite Bodies.

2.GENERAL HEAT CONDUCTION EQUATION

Introduction, General Heat Conduction Equation for an Anisotropic Materials in Cartesian Co- ordinates, General Heat Conduction Equation in Cylindrical Co- ordinates, General Heat Conduction Equadion in Spherical Co- ordinates, Thermal Diffusivity, Initial and Boundary Conditions.

3. STEADY –STATE CONDUCTION

 Introduction, Heat flow through a Slab or a Plane Wall, Heat flow through Radial Systems – Cylinders Heat Flow Through Radial Systems, Spheres, Heat Flow through Composite Wall , Overall Heat Transfer Coefficient, Heat Flow through Wall with Variable Thermal Conductivity, Critical Thickness of Insulation, Steady state Conduction with Internal Heat Generation,  Steady – state Conduction – Two Dimension.

4. STEADY –STATE CONDUCTION WITH HEAT DISSIPATION TO ENVIRONMENT

 The Controlling Coefficients, A Thin Rod, The Rectangular Fin, The Circular Fin, Fin Efficiency and Effectiveness, Condition for Using Fins.

5. UNSTEADY STATE CONDUCTION

Unsteady – State Process, Solids of Infinite Thermal Conductivity- Lumped Heat Capacity Analysis, Solution of Unsteady – State One Dimensional Heat Conduction Equation.

6. FORCED CONVECTION

Convection, Hydrodynamic Boundry Layer, Thermal Boundry Layer, Determination of Dimensionless Correlation for Forced Convection, Empirical Correlations for Flow Inside Tubes, Empirical Correlation for Flow Outside Tubes, Differential Equations, of Boundry Layer on a Flate Plate, Solution of Differential Equations of Boundry Layer, The Integra;  Equations of the Boundry Layer, Analogy between Fluid Friction and Heat Transfer , Heat Transfer in Laminar Flow in Tubes, Solution for Constant Wall Temperature, Heat Transfer in Turbulent Flow in Tubes.

7. FREE OR NATURAL CONVECTION

Characteristic Parameters in Natural Convection, Determination of Dimensionless Correlation for Free Convection, Empirical Correlations for Free convection, Momentum and Energy Equations for Laminar, Free Convection Heat Transfer on a Vertical Flate Plate, Integral Equations for Momentum and Energy on a Flat Plate.

8. THERMAL RADIATION

 Thermal Radiation in Electromagnetic Spectrum , Radiation Properties, Planck’s  Law for Monochromatic Thermal Radiation of a Black Body, Emissive Power an Radiation Intensity, Monochromatic Emissive Power of a Black Body, Stefan- Boltzman Law of Black Body Radiation, Heat Exchange by Radiation between Black Surfaces, Radiation Shape Factor and Reciprocity Theorem , Heat Exchange between Non- black Bodies, Heat Exchange by Radiation between Gray Surfaces , Radiation Shields, Radiation from Gases and Vapours.

9.MASS TRANSFER BY MOLCULAR DIFFUSION

 Introduction to Mass Transfer, Fick’s Law of Diffusion, Definitions of Quantities, Fick’s Law in Terms of Mass and Mole Fractions , Equivalence of Diffusion in Stationary- Media  - Species  Conservation  Equation, Diffusion in Binary Gas mixture.