Heat Transfer-1

Course Description:
Introduction to modes of heat transfer; One-dimensional steady-state conduction; Un-steady state conduction, Lumped heat capacity systems; Introduction to convection; Hydro-dynamic and thermal boundary layers; Laminar and turbulent boundary layers, convection in external and internal flows; Empirical relations for forced convection heat transfer; Heat exchangers.

Course Outline:
• Introduction to heat transfer in various modes: conduction, convection and radiation. • Introduction to conduction, conduction rate equation, thermal conductivity, heat diffusion equation, Boundary and initial conditions. • 1-D Unsteady state conduction, Lumped capacity systems. • Introduction to convection. Convection boundary layer, Laminar and turbulent flow, Convection transfer equation Velocity and thermal boundary conditions, Boundary layer similarity. • External flow; Flat-plate, unheated starting length, Cylinder in crossflow; Banks of tubes. • Internal flow; Fully developed region, Energy balance equation, Heat transfer coefficient in laminar and turbulent flow, Non-circular tubes, Heat transfer enhancement. • Heat exchangers; Heat exchanger types, Overall H.T.coefficient, Logarithmic Mean Temperature Difference (LMTD)