Carnot engine
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The document describes four processes in a Carnot engine: 1) Isothermal expansion where gas expands at constant temperature absorbing heat from a source, 2) Adiabatic expansion where gas expands with no heat transfer causing temperature to decrease, 3) Isothermal compression where gas compresses at constant temperature releasing excess heat, and 4) Adiabatic compression where gas compresses with no heat transfer causing temperature to increase. It also provides the efficiency formula for a Carnot engine relating work done to heat absorbed from the source.
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Carnot engine
- 1. • • •
- 2. • • • •
- 3. • During this process piston of cylinder Is moved outwards. • The gas expands at constant temperature. • The amount of heat absorbed From source To make temperature constant. • Volume increases and Pressure decreases. • This is isothermal expansion. That represented By The curve ab. 1.Isothermal expansion
- 4. • The piston of cylinder is Moved outwards • The gas expands such that No heat enters or leaves from it. • Volume increases and pressure decreases. • Temperature decreases . • This is called adiabatic Expansion. It is represented By the curve BC. 2.Adiabatic Expansion
- 5. • The piston of cylinder Is Moved Inwards. • The gas Is compressed At constant temperature. • The excess heat produced to maintain constant temperature. • Volume decreases, pressure increases. • This is called isothermal compression. Represented by curve CD. 3.Isothermal compression
- 6. 3.Adiabatic compression • The piston of cylinder Moved inwards • The gaS is compressed such that no heat enters or leaves The system. • Volume decreases, pressure increases. • Temperature increases. • This is called adiabatic compression.represented by the curve DA.
- 8. EFFICIENCY OF CARNOT ENGINE Where ‘W’is workdone and Q1 is amount of heat absorbed from source.