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 Page 1


Flow Of Presentation
? Introduction
? Relation b/w Carnot and Ideal Cycle
? Carnot Cycle
? Stirling Cycle
? Diesel Cycle
? Rankine Cycle
? Reheat Cycle
? Q/A session
Page 2


Flow Of Presentation
? Introduction
? Relation b/w Carnot and Ideal Cycle
? Carnot Cycle
? Stirling Cycle
? Diesel Cycle
? Rankine Cycle
? Reheat Cycle
? Q/A session
Thermodynamic cycle
Introduction
? STATEMENT
’’Thermodynamic processes that involve the 
transference of heat and work into and out of the 
system by varying pressure, temperature, and other 
state variables within the system’’
Page 3


Flow Of Presentation
? Introduction
? Relation b/w Carnot and Ideal Cycle
? Carnot Cycle
? Stirling Cycle
? Diesel Cycle
? Rankine Cycle
? Reheat Cycle
? Q/A session
Thermodynamic cycle
Introduction
? STATEMENT
’’Thermodynamic processes that involve the 
transference of heat and work into and out of the 
system by varying pressure, temperature, and other 
state variables within the system’’
Thermodynamics cycle
Ideal Cycle
A cycle that resembles the actual cycle closely but is made up 
totally of internally reversible processes is called an Ideal 
cycle.
Carnot Cycle : Infect , it is a type of an ideal Cycle because
carnot cycle has maximum efficiency closer to ideal cycle.
Page 4


Flow Of Presentation
? Introduction
? Relation b/w Carnot and Ideal Cycle
? Carnot Cycle
? Stirling Cycle
? Diesel Cycle
? Rankine Cycle
? Reheat Cycle
? Q/A session
Thermodynamic cycle
Introduction
? STATEMENT
’’Thermodynamic processes that involve the 
transference of heat and work into and out of the 
system by varying pressure, temperature, and other 
state variables within the system’’
Thermodynamics cycle
Ideal Cycle
A cycle that resembles the actual cycle closely but is made up 
totally of internally reversible processes is called an Ideal 
cycle.
Carnot Cycle : Infect , it is a type of an ideal Cycle because
carnot cycle has maximum efficiency closer to ideal cycle.
Thermodynamics cycle
Carnot Cycle
1-2 Reversible Isothermal Expansion (Heat Addition)
2-3 Reversible Adiabatic expansion
3-4 Reversible Isothermal compression (Heat Rejection)
4-1 Reversible Adiabatic Compression
Page 5


Flow Of Presentation
? Introduction
? Relation b/w Carnot and Ideal Cycle
? Carnot Cycle
? Stirling Cycle
? Diesel Cycle
? Rankine Cycle
? Reheat Cycle
? Q/A session
Thermodynamic cycle
Introduction
? STATEMENT
’’Thermodynamic processes that involve the 
transference of heat and work into and out of the 
system by varying pressure, temperature, and other 
state variables within the system’’
Thermodynamics cycle
Ideal Cycle
A cycle that resembles the actual cycle closely but is made up 
totally of internally reversible processes is called an Ideal 
cycle.
Carnot Cycle : Infect , it is a type of an ideal Cycle because
carnot cycle has maximum efficiency closer to ideal cycle.
Thermodynamics cycle
Carnot Cycle
1-2 Reversible Isothermal Expansion (Heat Addition)
2-3 Reversible Adiabatic expansion
3-4 Reversible Isothermal compression (Heat Rejection)
4-1 Reversible Adiabatic Compression
Thermodynamics cycle
Stirling cycle
1-2 Reversible Isothermal Expansion (Heat Addition)
2-3 Reversible Adiabatic expansion
3-4 Reversible Isothermal compression (Heat Rejection)
4-1 Reversible Adiabatic Compression
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FAQs on PPT: Thermodynamic Cycles - Thermodynamics - Mechanical Engineering

1. What is a thermodynamic cycle?
A thermodynamic cycle is a sequence of thermodynamic processes that are carried out in a closed system, resulting in the system returning to its original state. It involves the transfer of energy as heat and work between the system and its surroundings to perform a desired task, such as generating power or refrigeration.
2. What are the main types of thermodynamic cycles?
The main types of thermodynamic cycles include the Carnot cycle, Rankine cycle, Otto cycle, and Brayton cycle. The Carnot cycle is an idealized cycle that represents the maximum possible efficiency for a heat engine. The Rankine cycle is commonly used in steam power plants. The Otto cycle is the idealized cycle for spark-ignition engines, such as gasoline engines. The Brayton cycle is used in gas turbine engines.
3. How does a thermodynamic cycle work?
A thermodynamic cycle works by following a specific sequence of processes. It typically begins with an initial state, where the system is in equilibrium. The cycle then proceeds through a series of processes, such as compression, heating, expansion, and cooling, depending on the specific cycle being used. These processes involve the transfer of energy as heat and work. Finally, the system returns to its initial state, completing the cycle.
4. What is the significance of thermodynamic cycles in power generation?
Thermodynamic cycles play a crucial role in power generation as they provide a framework for converting heat energy into useful work. Power plants, such as steam power plants and gas turbine power plants, operate on specific thermodynamic cycles to generate electricity. These cycles allow efficient conversion of thermal energy into mechanical work, which is further converted into electrical energy using generators.
5. How does the efficiency of a thermodynamic cycle affect its performance?
The efficiency of a thermodynamic cycle is a measure of how effectively it converts thermal energy into useful work. Higher efficiency means that a greater percentage of the input energy is converted into useful work, resulting in better performance. Improving the efficiency of a thermodynamic cycle can lead to increased power output, reduced fuel consumption, and lower environmental impact. Engineers continually strive to enhance the efficiency of thermodynamic cycles through design improvements and technological advancements.
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