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Specifications of Turbomachines

Book Details

  • ISBN 978-93-83733-78-1
  • English
  • 2015, 2016, 2017, 2018, 2019
  • Paper Back
  • -

Contents

  • Unit 1.

    Basic Concepts of Turbo Machines: Definition & classification of Turbo machine, Basic laws and governing equations: continuity equation, steady flow energy equation(1st law of thermodynamics),2nd law of thermodynamics applied to turbo machines, Newton’s 2nd law of motion applied to turbomachines - Euler’s pump equation and Euler’s turbine equation.

    Dimensional analysis applied to hydraulic machines, power coefficient, flow coefficient, head coefficient, non-dimensional specific speed, Range of specific speeds for various turbo machines, Dimensional analysis applied to compressible flow machines, pressure ratio as a Function of temperature ratio, mass flow rate parameter and speed parameter.

    Unit 2.

    Centrifugal Compressors and Fans: Components and description, velocity iagrams, slip factor, energy transfer, power input factor, stage pressure rise and loading coefficient, pressure coefficient, degree of reaction, Centrifugal compressor characteristic, surging, rotating Stall and Choking.

    Axial Flow Compressors and Fans: Basic constructional features, Advantages of axial flow compressors, working principle, velocity triangle, elementary theory, stage work, work done factor, stage loading, degree of reaction; vortex theory, simple design calculations, introduction to blade design, cascade test, compressibility effects, operating characteristics.

    Reciprocating Compressors: Basic constructional features, working principle, work done calculation, single and double acting compressors.

    Unit 3.

    Centrifugal Pumps: Main parts, work done and velocity triangles, slip and slip factor, pump losses and efficiencies, minimum starting speed, net positive suction head, performance curve.

    Axial Flow Pumps: Description, velocity triangles, work done on the fluid, energy transfer, axial pump characteristics, cavitation.

    Reciprocating Pumps: Classification, component and working, single acting and double acting, discharge, work done and power required, coefficient of discharge, indicator diagram, slip, effect of friction and acceleration, theory of air vessels.

    Unit 4.

    Gas power cycles: Ideal and practical gas turbine cycle, heat exchange cycle, reheat cycle, intercooled cycle, Comparison of various cycles.

    Thermodynamic Cycles: Advantages, disadvantages and performance characteristics of Ram jet engine, pulse jet engine, turbo prop engine, turbo jet engine, turbo fan engine, Calculation of specific thrust and efficiency

    Unit 5.

    Gas Turbines: Impulse and reaction type gas turbines, Velocity triangles and calculation of work done, efficiency etc.