The vapour pressure of refrigerant should be

A. Lower than atmospheric pressure

B. Higher than atmospheric pressure

C. Equal to atmospheric pressure

D. Could be anything

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

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  1. In a vapour compression cycle, the refrigerant immediately after expansion valve is
  2. Presence of moisture in a refrigerant affects the working of
  3. The refrigerant used in small tonnage commercial machines (hermetically sealed units) is
  4. A vapour absorption refrigeration system
  5. During sensible cooling of air, specific humidity
  6. Ammonia absorption refrigeration cycle requires
  7. The boiling point of ammonia is
  8. The relative humidity lines on a psychrometric chart are
  9. A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine…
  10. For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
  11. A refrigeration system
  12. R-12 is generally preferred over R-22 in deep freezers since
  13. The lowest temperature during the cycle in a vapour compression system occurs after
  14. The lowest thermal diffusivity is of
  15. In a pressure enthalpy chart, the space to the left of the saturated liquid line represents
  16. The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
  17. The air cooling system mostly used in transport type aircrafts is
  18. A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
  19. Nusselt number (NN) is given by
  20. For obtaining high COP, the pressure range of compressor should be
  21. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature…
  22. A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking…
  23. During heating and humidification, the final relative humidity of air
  24. The bypass factor of a cooling coil decreases with
  25. The superheated vapour region, in a pressure enthalpy chart, is represented by the space
  26. If a gas is to be liquefied, its temperature must be
  27. In chemical dehumidification process,
  28. The refrigerant widely used in domestic refrigerators is
  29. Which of the following statement is wrong?
  30. Pressure of water vapour is given by