Introduction to Turbo Machinery
Impulse momentum principle and its applications, Force excreted on fixed plate,
moving flat plate and curved vanes, series of plates, velocity triangles and their
analysis, work done equations , efficiency.
Impulse Water Turbines
Pelton wheel-construction, principle of working, velocity diagrams and analysis, design
aspects, governing and performance characteristics, specific speed, selection of
Classifications, Francis, Propeller, Kaplan Turbines, construction features, velocity
diagrams and analysis, DOR, draft tubes - types and analysis, cavitations causes and
remedies, specific speed, performance characteristics and governing of reaction
turbines, selection of turbines.
Steam nozzles : types and applications, Equation for velocity and mass flow rate [No
Steam Turbines : Classifications (Axial and Radial), construction details, compounding
of steam turbines,
velocity diagrams and analysis of Impulse and reaction turbines (single & multi stage),
governing, performance characteristics.
Classification of rotodynamic pumps, components of centrifugal pump, types of heads,
velocity triangles and their analysis, effect of outlet blade angle, cavitation, NPSH,
Thoma's cavitation factor, priming of pumps, installation, specific speed, performance
characteristics of centrifugal pump, series and parallel operation of pumps, system
resistance curve, selection of pumps.
Classification of rotodynamic compressors, blowers, fans. Centrifugal compressor:
Construction, flow process on T-S Diagram, velocity diagram and Euler's work, slip
factor and its effect on work input, actual work input, dimension parameters, pre-whirl
losses, surging, choking, stalling characteristics.
Construction, stage velocity triangles and its analysis, enthalpy entropy diagram,
dimensionless parameters, flow through the blade rows, pressure rise across the stage,
stage losses and efficiencies, performance characteristics.