A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

A. Ammonia

B. Carbon dioxide

C. Freon

D. Brine

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. The dehumidification process, on the psychrometric chart, is shown by
  2. The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
  3. A refrigerant compressor is used to
  4. Reducing suction pressure in refrigeration cycle
  5. The superheated vapour region, in a pressure enthalpy chart, is represented by the space
  6. The minimum temperature to which water can be cooled in a cooling tower is
  7. The boiling point of ammonia is
  8. The conditioned air supplied to the room must have the capacity to take up
  9. One tonne of refrigeration (1TR) means that the heat removing capacity is
  10. The refrigerant used in small tonnage commercial machines (hermetically sealed units) is
  11. The mass of water vapour present in __________ is called absolute humidity.
  12. The boiling point of carbon dioxide is
  13. The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute…
  14. In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature
  15. In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively
  16. Bell Coleman cycle is a
  17. During humidification process, __________ increases.
  18. Air refrigerator works on
  19. The refrigerant widely used in domestic refrigerators is
  20. Air conditioning means
  21. The thermostatic expansion valve is used in __________ type of evaporators.
  22. Air refrigeration cycle is used in
  23. The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is
  24. Aqua ammonia is used as refrigerant in the following type of refrigeration system
  25. During dehumidification process, __________ remains constant.
  26. Mass flow ratio of NH₃ in comparison to Freon12 for same refrigeration load and same temperature…
  27. The humidity ratio or specific humidity is the mass of water vapour present in
  28. Rick up the incorrect statement
  29. For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and…
  30. During heating and humidification, the final relative humidity of air