Rotodynamic Pumps ( Centrifugal and Axial ) by K.M.Srinivasan Free Download PDF

ROTODYNAMIC PUMPS ( CENTRIFUGAL AND AXIAL )

BY K.M.SRINIVASAN

FREE DOWNLOAD PDF

ABOUT THE BOOK

ROTODYNAMIC PUMPS (CENTRIFUGAL AND AXIAL)

AUTHOR : K.M.SRINIVASAN

PUBLISHER : NEW AGE INTERNATIONAL PUBLISHERS

INTRODUCTION TO THE BOOK

Newton�s First law states that �Energy can neither be created nor be destroyed, but can be transformed from one form of energy to another form.� Different forms of energy exists namely, electrical, mechanical, fluid, hydraulic and pneumatic, pressure, potential, dynamic, wave, wind, geothermal, solar, chemical, etc. A machine is a contrivance, that converts one form of energy to another form. An electric motor converts electrical energy to mechanical energy. An internal combustion engine converts chemical energy to mechanical energy, etc.

A pump is a machine which converts mechanical energy to fluid energy, the fluid being incompressible. This action is opposite to that in hydraulic turbines. Most predominant part of fluid energy in fluid machines are pressure, potential and kinetic energy. In order to do work, the pressure energy and potential energy must be converted to kinetic energy. In steam and gas turbines, the pressure energy of steam or gas is converted to kinetic energy in nozzle. In hydraulic turbine, the potential energy is converted to kinetic energy in nozzle. High velocity stream of fluid from turbine nozzle strikes a set of blades and makes the blades to move, thereby fluid energy is converted into mechanical energy. In pumps, however, this process is reversed, the movement of blade system moves the fluid, which is always in contact with blade thereby converting mechanical energy of blade system to kinetic energy. For perfect conversion, the moving blade should be in contact with the fluid at all places. In other words, the moving blade system should be completely immersed in fluid.

CONTENTS