The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by

A. (C.O.P.)P = (C.O.P.)R + 2

B. (C.O.P.)P = (C.O.P.)R + 1

C. (C.O.P)P = (C.O.P)R - 1

D. (C.O.P)P = (C.O.P)R

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  1. Most thermostatic expansion valves are set for a superheat of
  2. Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure,…
  3. Oil separator in a refrigeration cycle is installed
  4. Air refrigeration cycle is used in
  5. The index which correlates the combined effects of air temperature, relative humidity and air velocity…
  6. Domestic refrigerator working on vapour compression cycle uses the following type of expansion device
  7. Pressure of water vapour is given by
  8. A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour…
  9. Rating of a domestic refrigerator is of the order of
  10. The domestic refrigerator uses following type of compressor
  11. The reduced ambient air cooling system has
  12. The temperature of ammonia after compression in a vapour compression system is
  13. In vapour compression cycle the condition off refrigerant is dry saturated vapour
  14. In vapour compression cycle the condition of refrigerant is superheated vapour
  15. Refrigeration in aeroplanes usually employs the following refrigerant
  16. In vapour compression refrigeration system, refrigerant occurs as liquid between
  17. The leakage in a refrigeration system using Freon is detected by
  18. Freon group of refrigerants are
  19. A refrigeration system
  20. In vapour compression cycle, the condition of refrigerant is saturated liquid
  21. The reciprocating refrigerant compressors are very suitable for
  22. In Electrolux refrigerator
  23. The centrifugal compressors are generally used for refrigerants that require
  24. Nusselt number (NN) is given by
  25. During heating and dehumidification process, dry bulb temperature
  26. The curved lines on a psychrometric chart indicates
  27. The value of C.O.P in vapour compression cycle is usually
  28. The specific humidity during dehumidification process
  29. The wet bulb temperature during sensible cooling of air
  30. Air refrigeration operates on