2. HOT COLD HOT COLD

4. The Ideal Vapor-Compression Refrigeration Cycle 1-2 Isentropic compression in a compressor 2-3 Constant-pressure heat rejection in a condenser 3-4 Throttling in an expansion device 4-1 Constant-pressure heat absorption in an evaporator h-constant s-constant P-constant

6. Actual Vapor-Compression Refrigeration Cycle

7. 1. Effect of Sub-cooling the Refrigerant Improving the efficiency

8. 2. Effect of Superheating the Refrigerant

9. 3. Cascade Refrigeration Systems

10. 4. Multistage Compression Refrigeration Systems

11. Air Refrigeration cycle

12. 1.

13. State 1: Saturated Vapor State 2: State 3: Saturated Liquid State 4:

14. Rate of Heat Removal Rate of Heat Rejection Coefficient of Performance ANS.

15. 2.

16. State 1: Saturated Vapor State 2: Superheated State 3: Saturated Liquid State 4:

17. State 5: Saturated Vapor State 6: State 7: Saturated Liquid State 8: Superheated

18. ANS

20. 3.

21. 4.