Heat Transfer

 Course Code : PCME4305 Author : uLektz University : Biju Patnaik University of Technology (BPUT) Regulation : 2010 Categories : Mechanical Format : ePUB3 (DRM Protected) Type : eBook

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Description :Heat Transfer of PCME4305 covers the latest syllabus prescribed by Biju Patnaik University of Technology (BPUT) for regulation 2010. Author: uLektz, Published by uLektz Learning Solutions Private Limited.

Note : No printed book. Only ebook. Access eBook using uLektz apps for Android, iOS and Windows Desktop PC.

Topics
UNIT-I: INTRODUCTION TO HEAT TRANSFER AND HEAT CONDUCTION

1.1 Introduction modes of heat transfer: Conduction, convection and radiation, Mechanism & basic laws governing conduction, convection and radiation heat transfer

1.2 Thermal conductivity, Thermal conductance & Thermal resistance, Contact resistance, convective heat transfer coefficient, radiation heat transfer coefficient, Electrical analogy, combined modes of heat transfer

1.3 Initial conditions and Boundary conditions of 1st, 2nd and 3rd Kind

1.4 Heat Conduction: The General heat conduction in Cartesian, polar-cylindrical and polar-spherical co-ordinates

1.5 Simplification of the general equation for one and two dimensional steady/transient conduction with constant/ variable thermal conductivity with / without heat generation.

1.6 Solution of the one dimensional steady state heat conduction problem in case of plane walls, cylinders and spheres for simple and composite cases. Critical insulation thickness

1.7 Heat transfer in extended surfaces (pin fins) without heat generation, Long fin, short fin with insulated tip and without insulated tip and fin connected between two heat sources.

1.8 Fin efficiency and fin effectiveness.

1.9 Conduction in solids with negligible internal temperature gradient (Lumped heat analysis).

1.10 Solution of Cartesian problems in two dimensions (steady state conduction with constant thermal conductivity and no heat generation) by variable separation method.

1.11 Numerical methods for heat conduction analysis

UNIT-II: CONVECTIVE OF HEAT TRANSFER BOILING LIQUIDS AND CONDENSING VAPOURS

2.1 Convective Heat Transfer: Introduction to convective flow - forced and free. Dimensional analysis of forced and free connective heat transfer.

2.2 Application of dimensional analysis, physical significance of Grashoff, Reynolds, Prandtl, Nusselt and Stanton numbers.

2.3 Conservation equations for mass, momentum and energy for 2-dimensional convective heat transfer in case of incompressible flow

2.4 Hydrodynamic and thermal boundary layers for flow over a flat plate.

2.5 Critical Reynolds number, general expressions for drag coefficient and drag force Reynolds-Colbourn analogy.

2.6 Thermal boundary layer, general expression for local heat transfer coefficient, Average heat transfer Coefficient, Nusselt number.

2.7 Flow inside a duct-velocity boundary layer, hydrodynamic entrance length and hydro dynamically developed flow, flow through tubes (internal flow).

2.8 Use of empirical relations for solving turbulent conditions for external and internal flow.

2.9 Mechanism of heat transfer during natural convection, Experimental heat transfer correlations for natural convection in the following cases (i) Vertical and horizontal plates (ii) Inside and outside flows in case of tubes

2.10 Heat transfer for boiling liquids and condensing vapours

2.11 Types of condensation, use of correlations for condensation on vertical flat surfaces, horizontal tube and; regimes of pool boiling, pool boiling correlations.

3.1 Radiative heat exchange: Introduction, Radiation properties, definitions of various terms used in radiation heat transfer, Absorptivity, reflectivity & transmissivity.

3.2 Emissive power & emissivity, Kirchoff’s identity, Planck’s relation for monochromatic emissive power of a black body

3.3 Derivation of Stefan-Boltzmann law and Wien’s displacement law from Planck’s relation, Radiation shape factor, Relation for shape factor and shape factor algebra.

3.4 Heat exchange between black bodies through non-absorbing medium. Gray bodies and real bodies, Heat exchange between gray bodies.