All Materials regarding to B.tech R-20 in Mechanical Engineering in 3rd Year 1st Semester with unit wise for Every Subjects are available.
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| Mech 3-1 TE 2 | ||
|---|---|---|
| S.No | Chapters / Units | Download Link |
| 1 | Unit 1 | Download |
| 2 | Unit 2 | Download |
| 3 | Unit 3 | Download |
| 4 | Unit 4 | Download |
| 5 | Unit 5 | Download |
Mech 3-1 TE 2 Important Topics Questions
UNIT– I:
BASIC CONCEPTS: Rankine cycle - schematic layout, thermodynamic analysis, concept of
mean temperature of heat addition, methods to improve cycle performance – regeneration &
reheating. combustion: fuels and combustion, concepts of heat of reaction, adiabatic flame
temperature, Stoichiometry, flue gas analysis.
BOILERS : Classification – working principles of L.P & H.P boilers with sketches –
mountings and accessories – working principles, boiler horse power, equivalent evaporation,
efficiency and heat balance – Draught: classification – height of chimney for given draught
and discharge, condition for maximum discharge, efficiency of chimney – artificial draught,
induced and forced.
UNIT– II:
STEAM NOZZLES: Function of a nozzle – applications - types, flow through nozzles,
thermodynamic analysis – assumptions -velocity of fluid at nozzle exit-Ideal and actual
expansion in a nozzle, velocity coefficient, condition for maximum discharge, critical pressure
ratio, criteria to decide nozzle shape: Super saturated flow - its effects, degree of super
saturation and degree of under cooling, Wilson line.
STEAM TURBINES: Classification – impulse turbine; mechanical details – velocity diagram
– effect of friction – power developed, axial thrust, blade or diagram efficiency – condition for
maximum efficiency. De-laval turbine - methods to reduce rotor speed-velocity compounding,
pressure compounding and velocity & pressure compounding, velocity and pressure variation
along the flow – combined velocity diagram for a velocity compounded impulse turbine,
condition for maximum efficiency.
UNIT– III:
REACTION TURBINE: Mechanical details – principle of operation, thermodynamic
analysis of a stage, degree of reaction –velocity diagram – Parson’s reaction turbine –
condition for maximum efficiency – calculation of blade height.
STEAM CONDENSERS: Requirements of steam condensing plant – classification of
condensers – working principle of different types – vacuum efficiency and condenser
efficiency – air leakage, sources and its affects, air pump, cooling water requirement.
UNIT– IV:
COMPRESSORS: Classification – fan, blower and compressor – positive displacement and
non-positive displacement type – reciprocating and rotary types.
RECIPROCATING: Principle of operation, work required, Isothermal efficiency, volumetric
efficiency and effect of clearance, multi stage compression, saving of work, minimum work
condition for two stage compression.
ROTARY:Roots Blower, vane sealed compressor, Lysholm compressor –mechanical details
and principle of working – efficiency considerations.
UNIT– V:
CENTRIFUGAL COMPRESSORS: Mechanical details and principle of operation –velocity
and pressure variation. Energy transfer-impeller blade shape-losses,slip factor, power input
factor, pressure coefficient and adiabatic coefficient– velocity diagrams – power.
AXIAL FLOW COMPRESSORS: Mechanical details and principle of operation – velocity
triangles and energy transfer per stage degree of reaction, work done factor – isentropic
efficiency- pressure rise calculations – Poly tropic efficiency.
TEXT BOOKS:
1) Thermodynamics and Heat Engines/R.Yadav, Volume -II /Central Publishing House
2) Heat Engineering /V.P Vasandani and D.S Kumar/Metropolitan Book Company, New
Delhi.
REFERENCES:
1) Thermal Engineering-M.L.Mathur & Mehta/Jain bros. Publishers
2) Thermal Engineering-P.L.Ballaney/ Khanna publishers.
3) Thermal Engineering / RK Rajput/ Lakshmi Publications
4) Thermal Engineering-R.S Khurmi, &J S Gupta/S.Chand.
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