8ME3-GAS TURBINES AND GAS POWER PLANT |
Units: I |
Review of basic principles and fundamentals of rotating machines.
Cycle arrangements, open cycle arrangements, closed cycle arrangements, basic requirement
of
the working medium, properties of various working media, applications of gas turbine,
comparison of gas turbines with reciprocating engines.
Ideal cycles: simple gas turbine cycle, heat exchange cycle, reheat cycle, reheat and heat
exchange cycle, intercooled cycle, intercooled cycle with heat exchanger, intercooled and
reheat
cycle, intercooled cycle with heat exchange and reheat. Comparison of various cycles.
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Units: II |
Practical cycles and their analysis, effect of variable specific heat, mechanical losses, loss due
to incomplete combustion, polytropic efficiency, performance of actual cycles, comparison of
ideal vs actual cycles. Jet propulsion cycles. |
Units: III |
Thermodynamic cycles, advantages, disadvantages and performance characteristics of
Ramjet
engine, pulsejet engine, turboprop engine, turbojet engine, turbofan engine.
Calculation of specific thrust and efficiency.
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Units: IV |
Combustion systems, combustion theory applied to gas turbine combustor, factors affecting
combustion chamber design and performance. Combustion chamber geometry, fuel injection
and ignition, use of cheap fuels. Impulse and reaction type gas turbines. Velocity triangles
and calculation of work done,efficiency etc..
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Units: V |
Advantages of a gas turbine power plant, comparison with steam, diesel and hydel power
plant. Performance of GT power plant-part load efficiency, airflow rate, thermal efficiency,
gas turbine blading and fuels. Gas turbine materials. Free piston engine plant.
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