The desirable property of a refrigerant is

A. Low boiling point

B. High critical temperature

C. High latent heat of vaporisation

D. All of these

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  1. It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature…
  2. Which of the following statement is correct?
  3. The material of pipe lines for a system using Freon as a refrigerant should be
  4. A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes…
  5. The general rule for rating refrigeration systems (excepting for CO₂ system) is to approximate…
  6. In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the
  7. In chemical dehumidification process,
  8. The thermostatic expansion valve is also called
  9. A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking…
  10. The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.
  11. In a vapour compression system, the condition of refrigerant before passing through the condenser is
  12. Which of the following cycles uses air as the refrigerant?
  13. The undesirable property of a refrigerant is
  14. For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and…
  15. When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance…
  16. Critical pressure of a liquid is the pressure
  17. While designing the refrigeration system of an aircraft, the prime consideration is that the
  18. One ton refrigeration corresponds to
  19. Where does the lowest temperature occur in a vapour compression cycle?
  20. The difference between dry bulb temperature and dew point temperature, is called
  21. When the temperature of the surrounding is higher than the temperature of the body, then the heat loss…
  22. In vapour compression cycle, the condition of refrigerant is very wet vapour
  23. A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
  24. Moisture should be removed from refrigerants to avoid
  25. In vapour compression cycle, the condition of refrigerant is saturated liquid
  26. During humidification process, __________ increases.
  27. The vapour pressure of refrigerant should be
  28. In a psychrometric chart, specific humidity (moisture content) lines are
  29. Wet bulb temperature is the temperature of air recorded by a thermometer, when
  30. Which of the following refrigerant has the lowest freezing point?