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Specifications of Heat Transfer

Book Details

  • ISBN 978-93-83733-79-8
  • English
  • 2019
  • Paper Back
  • -


  • Unit 1. Introduction: Objective, scope and outcome of the course.

    Unit 2. Introduction: Heat transfer processes, conduction and radiation. Fourier’s
    law of heat conduction, thermal conductivity, thermal conductivity of solids,
    liquids and gases, effect of temperature on thermal conductivity. Newton’s law
    of cooling, definition of overall heat transfer coefficient. General parameters
    influence the value of heat transfer coefficient.

    Conduction: General 3-Dimensoinal conduction equation in Cartesian,
    cylindrical and spherical coordinates; different kinds of boundary conditions;
    nature of differential equations; one dimensional heat conduction with and
    without heat generation; electrical analogy; heat conduction through composite
    walls; critical thickness of insulation

    Unit 3. Heat transfer from extended surfaces: Governing differential equation of
    fin, fin efficiency and effectiveness for different boundary conditions. Unsteady
    state heat conduction for slab, cylinder and sphere, Heisler chart.
    Convection: Review of Navier – Stokes and energy equation, hydrodynamic
    and thermal boundary layers; laminar boundary layer equations; forced
    convection appropriate non dimensional members; effect of Prandtl number;
    empirical relations for flow over a flat plate and flow through pipes.

    Unit 4. Natural convection: Dimensional analysis, Grashoff number, boundary layers
    in external flows (flow over a flat plate only), boundary layer equations and
    their solutions, heat transfer correlations.
    Heat transfer with change of phase: Nature of vaporization phenomena;
    different regimes of boiling heat transfer; correlations for saturated liquid
    vaporization; condensation on flat plates; correlation of experimental results,
    drop wise condensation.

    Unit 5. Heat exchanger: Types of heat exchangers, arithmetic and logarithmic mean
    temperature differences, heat transfer coefficient for parallel, counter and cross
    flow type heat exchanger; effectiveness of heat exchanger, N.T.U. method,
    fouling factor. Constructional and manufacturing aspects of Heat Exchangers.

    Unit 6. Thermal Radiation: Plank distribution law, Krichoff’s law; radiation properties,
    diffuse radiations; Lambert’s law. Radiation intensity, heat exchange between
    two black bodies heat exchanger between gray bodies. Shape factor; electrical
    analogy; reradiating surfaces heat transfer in presence of reradiating surfaces