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Carnot Cycle
❀ most efficient Thermodynamic Cycle
❀ heat is transferred during Isothermal Process
❀ during Isentropic Compression, the pressure increases
❀ during Isentropic Expansion, the pressure decreases
❀ Mean Effective Pressure (MEP) is the ratio of the Net Work and the Volume Displacement
❀ Carnot cycle comprises of four processes:
↬ Reversible isothermal process of heat addition (Process A-B)
↬ Reversible adiabatic process of expansion (Process B-C)
↬ Reversible isothermal process of heat rejection (Process C-D)
↬ Reversible adiabatic process of compression (Process D-A)
Carnot heat engine
Process A-B
❀ process heat is released from the hot
reservoir and is absorbed by the
ideal gas particles within the system.
❀ the temperature of the system rises
❀ high temperature causes the gas
particles to expand hence pushing
the piston upwards and doing work
on the surroundings
Process B-C
❀ In this process expansion continuous,
however there is no heat exchange
between the system and the
surroundings.
❀ the system is undergoing adiabatic
expansion.
❀ Expansion allows the ideal gas
particles to cool, decreasing the
temperature of the system.
Process C-D
❀ Process surroundings do work on
the system which causes heat to be
released.
❀ Temperature within the system
remains the same. Thus, isothermal
expansion occurs.
Process D-A
❀ No heat exchange occurs in this
process however, the surroundings
continue to do work on the system.
❀ Adiabatic compression occurs which
raises the temperature of the system
and puts the piston back to its
original state (Prior to process A-B).
