Explain briefly Carnot Cycle.

Ø  Introduction:

•       The model of Carnot engine was first designed by Nicolas Leonard Sadi Carnot in 1824.

•       So it was named after his development (Carnot)

•       It was graphically expanded by Benoit Paul Emile Chaperon in 1834.

•       Mathematically functioned by Rudolf Claudius in 1857 after that the concept of entropy was developed.

•       It is most efficient heat engine.

•       It is Reversible or Irreversible Process.

Ø  Definition:

“The Carnot engine can be thought of as most efficient heat engine”.

It consists of four types

1. Isothermal Expansion.
2. Adiabatic Expansion.
3. Isothermal Compression.
4. Adiabatic Compression.

Ø  Isothermal Expansion
“In this process, the ideal gas in the system absorbs Q(in) amount of heat from a heat source at a high temperature T(hot) expands and does work on surrounding”

Ø  Adiabatic Expansion:

“In this process, the system is thermally insulated. The gas

Continues to expands and do works on surroundings”.

Ø  Isothermal Compression

“In this process, the gas is allowed to compress reversibly and isothermally

at a lower temperature so volume decreases and pressure increases”

Adiabatic Compression:

“It is adiabatic and perfectly insulated, so surroundings

do work the gas at which back to Temperature (hot)”