Refrigeration & Air-Conditioning Practice Set-3

May 18, 2021

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1. The freezing point of sulphur dioxide is

2. In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to

3. A thermostatic expansion valve in a refrigeration system

4. The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called

5. Cooling water is required for following equipment in ammonia absorption plant

6. For obtaining high COP, the pressure range of compressor should be

7. Which of the following cycles uses air as the refrigerant?

8. The boiling point of ammonia is

9. Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

10. The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)


 

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