The document discusses several thermodynamic cycles including the Carnot, Sterling, Ericsson, Otto, Atkinson, Diesel, Dual, and Lenoir cycles. For each cycle, it provides a diagram and descriptions of the key processes which take place, such as isothermal heat addition/rejection, adiabatic compression/expansion, and constant volume or pressure changes. It concludes by discussing the comparison of air standard cycles to actual engine cycles.

1. THERMODYNAMICS
BY
CH. SRAVANTHI
ASSISTANT PROFESSOR
MECHANICAL ENGINEERING
JBIET

2. CHAPTER 5
AIR STANDARD CYCLES
•OTTO CYCLE
•DIESEL CYCLE
•DUAL CYCLE
•STERLING CYCLE
•ATKINSON CYCLE
•ERICSSON CYCLE
•LENOIR CYCLE

3. CARNOT CYCLE

4. •1-2 : ISOTHERMAL HEAT ADDITION
•2-3 : REVERSIBLE ADIABATIC OR
ISENTROPIC EXPANSION
•3-4 : ISOTHERMAL HEAT REJECTION
•4-1 : REVERSIBLE ADIABATIC OR
ISENTROPIC COMPRESSION

6. STERLING CYCLE
3
2
4
1
1
2
3 4

7. •1-2 : ISOTHERMAL COMPRESSION
•2-3 : CONSTANT VOLUME HEAT
ADDITION FROM REGENERATOR
•3-4 : ISOTHERMAL EXPANSION
•4-1 : CONSTANT VOLUME HEAT
REJECTION TO REGENERATOR

9. ERICSSON CYCLE

10. •1-2 : ISOTHERMAL EXPANSION
•2-3 : CONSTANT VOLUME HEAT
REJECTION TO REGENERATOR
•3-4 : ISOTHERMAL COMPRESSION
•4-1 : CONSTANT VOLUME HEAT
ADDITION FROM REGENERATOR

12. OTTO CYCLE

13. •1-2 : REVERSIBLE ADIABATIC OR
ISENTROPIC COMPRESSION
•2-3 : CONSTANT VOLUME HEAT
ADDITION
•3-4 : REVERSIBLE ADIABATIC OR
ISENTROPIC EXPANSION
•4-1 : CONSTANT VOLUME HEAT

18. ATKINSON CYCLE

19. •1-2 : REVERSIBLE ADIABATIC OR ISENTROPIC
COMPRESSION
•2-3 : CONSTANT VOLUME HEAT ADDITION
•3-4-5 : REVERSIBLE ADIABATIC OR
ISENTROPIC EXPANSION
•5-1 : CONSTANT PRESSURE HEAT REJECTION

21. DIESEL CYCLE

22. •1-2 : ADIABATIC OR ISENTROPIC
COMPRESSION
•2-3 : CONSTANT PRESSURE HEAT
ADDITION
•3-4 : ADIABATIC OR ISENTROPIC
EXPANSION
•4-1 : CONSTANT VOLUME HEAT

26. DUAL CYCLE

27. •1-2 : ADIABATIC OR ISENTROPIC
COMPRESSION
•2-3 : CONSTANT VOLUME HEAT
ADDITION
•3-4 : CONSTANT PRESSURE HEAT
ADDITION
•4-5 : ADIABATIC OR ISENTROPIC
EXPANSION

30. LENOIR CYCLE

32. COMPARISON OF CYCLES

33. COMPARISON OF AIR STANDARD CYCLES
AND ACTUAL CYCLES