1. Evaporator is the internal part providing cooling/heating in vapour absorption system.

2. Liquid + Vapor is the phase of refrigerant after expansion/flow control valve.

3. In air cycle working fluid is free, environmentally friendly, safe and non-toxic.

4. One ton of refrigeration in Kj/h is equal to 14000

5. 1BTU 1055.055 J

6. Define BTU.

7. SEER stands for Seasonal Energy efficiency rating

8. Liquid will be phase of refrigerant if there is no expansion/flow control valve before

evaporator.

9. Refrigerant should have low dielectric strength for compressors.

10. Heat Pumpis called reversed compression cycle.

11. Outlet of compressor is attached to evaporator to produce Heating

12. In P-h chart refrigerant should be in Liquid phase after condensation for better efficiency.

13. Air open system is mostly used in airplanes cooling.

14. Compressor is used to flow the refrigerant in vapour compression system.

15. Refrigerant should have low density of suction gas.

16. Write one unique property of ammonia using as a refrigerant in vapour compression

systems Light in weight than air

17. CFCs are the refrigerants that are widely used in vapour compression cycle.

18. 1J______________BTU

19. R-123 is HCFCS

20. Refrigerant will be in Gas/Saturated Vapor phase after condenser in heat pump.

21. m.v is the equation of volumetric flow rate.

22. COP is always equal to efficiency.

23. The equation of compressor work_________________________

24. Theoretical COP is the ratio between__________

25. Decreases the global warming potential by using__________ it as a refrigerant.

26. Define Ton of refrigeration

27. Refrigerant should have high dielectric strength for expansion valve.