13 - Curriculum Development Centre, Kalamassery

UNIT – IVSteam BoilersFunctions – classifications – fire tube and water tube – water tube boilers – Babcock and Wilcox –modern high pressure boilers – Brief explanation with line sketches – steam turbines – advantages oversteam engine – types – working principles of impulse and reaction turbines (use line sketches)Speed range of working pressure - speed and capacity of different types of turbines used in thermal powerstationsUNIT – VWater TurbinesClassifications of turbines – impulse and reaction turbines – water power - break power - overallefficiency – Pelton wheel - description of working – Reactions turbines – working principles inward andoutward flow -Francis turbine and Kaplan turbines – speed load characteristics – Regulation of waterturbines – Governors - needle valves - guide vanes and deflectors – specific speed - Choice of turbinebased on specific speed.PumpsClassifications- work done-slip- separation-Air vessel – coefficient of discharge in reciprocating pumps -centrifugal pumps - Description of parts – whirl chamber- volute chamber and diffuser - least startingspeed- characteristics curves - prime mover foot valve - Multistage pumps- propeller- jet - Airlift anddeep well pumps - Application of pumpsREFERENCE BOOKS1. A Text Book on Hydraulics - R. S. Khurmi2. Hydraulics & hydraulic Machines-Jagad lal.3. Fluid mechanics & Machines-Modi & Sethi.4. Hydraulics & hydraulic Machines-NITTTR Chennai5. Thermal Engineering -R.S.Khurmi94