CONTENTS Chapter 1 Introduction to Basic Definitions 1.0 Introduction . . . . . . . . . . . . . . .. . . . . . . . .. . . . 1.1 Types of Turbomachines .. .. . . . . . . . . . .. . . . . . . . . . .. . 1.2 Stages of Turbomachines . . . . .. . . . .. . .. . . . . . . . . 1.3 Specific Work . . . . . . . . . . .. . . . .. .. . . . .. . .. . . 1.4 Estimation of Specific Work . Compressible flow . . . . . . 1.4.1 Expression for Specific Work - Compressible fl ow 1.5 Specifications of a Turbomachin e . . . .. . .. .. . . . .. . .. . 1.6 Losses in Turbomachine . . .. . .. . .. . .. . .. .. . .. .. . . . . 1.6.1 Internal Losses - Hydraulic losses, Leakage losses, Disc friction losses, Return flow losses. 1.6.2 Further consider ation on Hydra ulic losses, friction losses, profil e losses, secondary flow losses, tip clearance losses, cavitation losses, shock or incidence loss, annulus wall losses. 1.6.3 Further consideration on leakage losses in pumps, in air/gas steam handling machines , 1.6.4 Internal and Fluid Power
1.1 1.2 1.5 1.10 1.12 1.17 1.18
1.6.5 External Losses 1. 7
Efficiencies - Hydraulic Efficiency, Internal E'fficien cy, Mechanical-Efficiency, Overall Efficiency. .. .. .. . .. .. . .. 1. 7.1 Estimation of Efficiencies Small Stage or Polytropic Efficiency . .. . . . . .. . . . . . 1.8.1 Turbine Polytropic Efficiency
1.8.2 Compressor Polytropic Efficiency 1.9 Reheat Factor, Pre-heat Factor .. . .. . . . .. 1.10 Questions . . . . . . .. .. . .. . . .. .. . . . . . . ', . .
Chapter 2 Energy Transfer 2.0 Velocity Triangles at (1) and (2) of impeller . . .. . . 2.1 Energy Transfer EquationlEulers Equation .. . . . .. . 2.2 Discussions on Specific Work . . . . . . . . . . . 2.3 Vane Congruent Flow .. . . . .. . . . . .. .. .. . . . 2.4 Actual Flow through an Impeller and Slip - PressurE: difference effect, Relative circulation effect, Vane thickness effect . . . .. .. . . 2.5 Degree of Reaction . . . . . . . . . . . . . . . . ,. 2.6 Blade Angles . . . . . . . . . . . . 2.6.1 Impeller Blade Angle on the Pressure End, ~2b
2.1 2.3 2.4 2.5 2.6 2.13 2.17
. - - 2.6.2 Impeller Blade Angle on th e S,,
