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The sub-cooling in a refrigeration cycle

A. Does not alter C.O.P.

B. Increases C.O.P.

C. Decreases C.O.P.

D. None of these

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  1. In a domestic vapour compression refrigerator, the refrigerant commonly used is
  2. The refrigerant widely used in domestic refrigerators is
  3. Allowable pressure on high pressure side or ammonia absorption system is of the order of
  4. Bell Coleman cycle is a
  5. During dehumidification process, the relative humidity
  6. Which of the following statement is wrong?
  7. A one tonne refrigerating machine means that
  8. Mass flow ratio of NH₃ in comparison to Freon12 for same refrigeration load and same temperature…
  9. The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.
  10. In a vapour compression system, the condition of refrigerant before passing through the condenser is
  11. Which of the following statement is correct?
  12. In larger industrial and commercial reciprocating compression systems, refrigerant widely used is
  13. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity…
  14. The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour…
  15. In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at
  16. The boiling point of ammonia is
  17. The difference between dry bulb temperature and wet bulb temperature, is called
  18. In chemical dehumidification process,
  19. A thermostatic expansion valve in a refrigeration system
  20. For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet…
  21. The advantage of dry compression is that
  22. The thermostatic expansion valve is used in __________ type of evaporators.
  23. Where does the lowest temperature occur in a vapour compression cycle?
  24. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents
  25. In a reversed Brayton cycle, the heat is absorbed by the air during
  26. The C.O.P. of an absorption type refrigerator is given by (where T₁ = Temperature at which the…
  27. A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing…
  28. An evaporator is also known as
  29. The vapour compression refrigerator employs the following cycle
  30. The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which…