Basic
modes of heat transfer: conduction: Fourier's law of heat conduction, thermal
conductivity of various insulation and conducting materials; convection,
Newton's law of cooling, convective heat transfer coefficient under various
conditions ; and thermal radiation, black and grey Stephan-Boltzmann law,
geometry and emissivity factors; combined mechanisms of heat transfer. Simple
steady state conduction in one dimension: plane wall and cylindrical systems
without internal heat generation (single and composite), thermal resistance,
thermal-electricity analogy, the overall heat transfer coefficient; temperature
distribution in plane wall and cylindrical systems with internal heat
generation using differential analysis; boundary conditions (specified
temperature, convective and insulation), derivation of the general (3-D) heat
conduction equation in Cartesian and cylindrical coordinates;
conduction-convection systems, simple extended surfaces (fins) analysis. Unsteady
state heat conduction: lumped parameter approximation, the Biot number,
quenching, heating of lumped systems with and without internal generation, time
constant. Heat transfer by convection - the Boundary Layer (B.L.) concept in
external and internal flows; Newton's law of viscosity; simple B.L. analysis
for internal and external flow; dimensional analysis for heat transfer in
internal flow, Reynold, Prandtle and Nusselt Numbers; Laminar and turbulent
flows, theoretical and empirical correlation equations; Calculation of the heat
transfer coefficient in forced convection using correlation equations under
various flow conditions. An introduction to boiling heat transfer: Regimes of
boiling, the pool boiling curve, burnout and the critical heat flux, correlation
equations for calculating the critical heat flux. An introduction to heat
exchanger analysis and selection: Classification of heat exchangers, double
pipe, shell and tube and cross flow types, Analysis of double pipe parallel and
counter flow heat exchangers, analysis and selection of shell and tube heat
exchangers single-pass and multi-pass; effectiveness-NTU analysis for heat
exchanger design and analysis. Simple basic principles experiments such as
measurement of thermal conductivity and forced convection heat transfer
coefficient (heat exchanger measurements)
