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Cooling water is required for following equipment in ammonia absorption plant

A. Condenser

B. Evaporator

C. Absorber

D. Condenser, absorber and separator (rectifier)

Correct Answer : D.


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  1. The temperature of ammonia after compression in a vapour compression system is
  2. The wet bulb depression indicates _________ humidity of the air.
  3. The fluids used in Electrolux refrigerator are
  4. The evaporator changes the low pressure liquid refrigerant from the expansion valve into
  5. The moisture in a refrigerant is removed by
  6. The process of under-cooling is generally brought about by
  7. Which of the following refrigerant has the lowest freezing point?
  8. In case of sensible cooling of air, the coil efficiency is given by
  9. The leakage in a refrigeration system using ammonia is detected by
  10. The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by
  11. One of the purposes of sub cooling the liquid refrigerant is to
  12. Which of the following refrigerant has the highest freezing point.
  13. The advantage of dry compression is that
  14. The thermal diffusivity for gases is generally __________ those for liquids.
  15. During dehumidification process, the relative humidity
  16. In larger industrial and commercial reciprocating compression systems, refrigerant widely used is
  17. Presence of moisture in a refrigerant affects the working of
  18. The humidity ratio or specific humidity is the mass of water vapour present in
  19. The boiling point of ammonia is
  20. In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at
  21. A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour…
  22. Freon group of refrigerants are
  23. Chaperon equation is a relation between
  24. Highest pressure encountered in a refrigeration system should be
  25. A refrigerant with the highest critical pressure is
  26. Dry bulb temperature is the temperature of air recorded by a thermometer, when
  27. Which of the following refrigerant is highly toxic and flammable?
  28. The bypass factor for a cooling coil
  29. The process, generally used in summer air conditioning to cool and dehumidify the air, is called
  30. In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature