Following are the principal assumptions of Schmidt’s analysis of Stirling cycle engine:
1. All processes are reversible.
2. The regeneration process is perfect.
3. The working fluid obeys perfect gas law, PV ¼ mRT.
4. The mass of air in the system remains constant, no leakage in the system.
5. The volume variation in the working space is sinusoidal.
6. There is no temperature gradient in the heat exchanger.