PART – B
UNIT – 5
Classification; Expression for overall pressure ratio developed;
Blade angles at impeller eye root and eye tip; Slip factor and power input factor; width of the impeller channel;
Compressibility effect – need for pre-whirl vanes; Diffuser design: Flow in the vaneless space, determination of
diffuser inlet vane angle, width and length of the diffuser passages; Surging of centrifugal compressors;
AXIAL FLOW COMPRESSORS: Classification; Expression for Pressure ratio developed per stage –
work done factor, radial equilibrium conditions.
UNIT – 6
Definition of terms used in the design of centrifugal pumps like manometric
head, suction head, delivery head, pressure rise, manometric efficiency, hydraulic efficiency, volumetric efficiency,
overall efficiency, multistage centrifugal pumps, minimum starting speed, slip, priming, cavitation, NPSH.
UNIT – 7
STEAM TURBINES: Classification, Single stage impulse turbine; Condition for maximum blade efficiency,
stage efficiency, Compounding – Need for compounding, method of compounding. Impulse Staging – Condition of
maximum utilization factor for multi stage turbine with equiangular blades; effect of blades and nozzle losses.
Reaction turbine; Parson’s reaction turbine, condition for maximum blade efficiency, reaction staging.
UNIT – 8
Classification; Pelton Turbine-velocity triangles, Design parameters, turbine
efficiency, volumetric efficiency; Francis turbine – velocity triangles, runner shapes for different blade speeds, Design
of Francis turbine; Function of a Draft tube, types of draft tubes; Kaplan and Propeller turbines – Velocity triangles
and design parameters.
An Introduction to energy conversion, Volume III – Turbo machinery, V. Kadambi and Manohar Prasad,
New Age International Publishers (P) Ltd.
“Turbines, Compressors & Fans”, S.M. Yahya, Tata-McGraw Hill Co., 2 Edition (2002).
“Principles of Turbo Machinery”, D.G. Shepherd, The Macmillan Company (1964).
Fundamentals of Turbomachinery: William W. Perg, John Wiley & Sons, Inc. 2008.
A Text book of Turbo Machines - M.S.Govindgouda & A.M. Nagaraj-M.M.Publications-IV Edition-2008
“Fluid Machinery” B.K. Venkanna, PHI.