ME3451 THERMAL ENGINEERING-I
Important questions
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Unit-1
2.reheat and regenerative cycle
Unit-2
1.types and shape of nozzle
2. critical pressure ration, variation of mass flow
Unit-4
1.valve and port timing diagram , p-v digram
2.Air fuel ratio calculation
3.Combustion in SI and CI engine
Unit-5
1.Morse and heat balance test
2.multifuel injection system,concept of supercharging and turbo charging
3.magneto, battery and electronic lubrication and cooling
Unit-3
1.multistaging compounding and governing
2.regenerative and reheated cycle and their combination
**Very important questions are bolded and may be asked based on this topic
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*These questions are expected for the exams This may or may not be asked for exams All the best.... from admin Santhosh
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Air Standard Cycles - Otto, Diesel, Dual, Brayton - Cycle Analysis, Performance and Comparison - Rankine, reheat and regenerative cycle
UNIT II RECIPROCATING AIR COMPRESSOR
Classification and comparison, working principle, work of compression - with and without clearance, Volumetric efficiency. Isothermal efficiency and Isentropic efficiency. Multistage air compressor with Intercooling. Working principle and comparison of Rotary compressors with reciprocating air compressors.
UNIT III INTERNAL COMBUSTION ENGINES AND COMBUSTION
IC engine - Classification, working, components and their functions. Ideal and actual: Valve and port timing diagrams, p-v diagrams- two stroke & four stroke, and SI & CI engines - comparison. Geometric, operating, and performance comparison of SI and CI engines. Desirable properties and qualities of fuels. Air-fuel ratio calculation - lean and rich mixtures. Combustion in SI & CI Engines - Knocking - phenomena and control.
UNIT IV INTERNAL COMBUSTION ENGINE PERFORMANCE AND SYSTEMS
Performance parameters and calculations. Morse and Heat Balance tests. Multipoint Fuel Injection system and Common Rail Direct injection systems. Ignition systems - Magneto, Battery and Electronic. Lubrication and Cooling systems. Concepts of Supercharging and Turbocharging-Emission Norms
UNIT V GAS TURBINES
Gas turbine cycle analysis - open and closed cycle. Performance and its improvement - Regenerative, Intercooled, Reheated cycles and their combinations. Materials for
Turbines.
UNIT I GAS AND STEAM POWER CYCLES
Air Standard Cycles - Otto, Diesel, Dual, Brayton - Cycle Analysis, Performance and Comparison - Rankine, reheat and regenerative cycle
UNIT II RECIPROCATING AIR COMPRESSOR
Classification and comparison, working principle, work of compression - with and without clearance, Volumetric efficiency. Isothermal efficiency and Isentropic efficiency. Multistage air compressor with Intercooling. Working principle and comparison of Rotary compressors with reciprocating air compressors.
UNIT III INTERNAL COMBUSTION ENGINES AND COMBUSTION
IC engine - Classification, working, components and their functions. Ideal and actual: Valve and port timing diagrams, p-v diagrams- two stroke & four stroke, and SI & CI engines - comparison. Geometric, operating, and performance comparison of SI and CI engines. Desirable properties and qualities of fuels. Air-fuel ratio calculation - lean and rich mixtures. Combustion in SI & CI Engines - Knocking - phenomena and control.
UNIT IV INTERNAL COMBUSTION ENGINE PERFORMANCE AND SYSTEMS
Performance parameters and calculations. Morse and Heat Balance tests. Multipoint Fuel Injection system and Common Rail Direct injection systems. Ignition systems - Magneto, Battery and Electronic. Lubrication and Cooling systems. Concepts of Supercharging and Turbocharging-Emission Norms
UNIT V GAS TURBINES
Gas turbine cycle analysis - open and closed cycle. Performance and its improvement - Regenerative, Intercooled, Reheated cycles and their combinations. Materials for
Turbines.