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Choose the correct statement

A. A refrigerant should have low latent heat

B. If operating temperature of system is low, then refrigerant with low boiling point should be used

C. Pre-cooling and sub-cooling bf refrigerant are same

D. Superheat and sensible heat of a refrigerant are same

Related Questions

  1. Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?
  2. Which of the following statement is correct for ammonia as a refrigerant?
  3. Critical pressure of a liquid is the pressure
  4. The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is
  5. In a vapour compression cycle, the refrigerant immediately after expansion valve is
  6. The thermal diffusivity for gases is generally __________ those for liquids.
  7. In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is
  8. The wet bulb temperature at 100% relative humidity is ________ dew point temperature.
  9. The bypass factor for a cooling coil
  10. The capillary tube, as an expansion device, is used in
  11. During dehumidification process, __________ remains constant.
  12. In a lithium bromide absorption refrigeration system
  13. A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called
  14. In a vapour compression system, the condition of refrigerant is dry saturated vapour
  15. If a gas is to be liquefied, its temperature must be
  16. The difference between dry bulb temperature and dew point temperature, is called
  17. The process of under-cooling is generally brought about by
  18. The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents
  19. If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the…
  20. The central air conditioning system has ________ overall efficiency as compared to individual systems.
  21. Which of the following refrigerant is highly toxic and flammable?
  22. The refrigerant used in small tonnage commercial machines (hermetically sealed units) is
  23. In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s.…
  24. The coefficient of performance of Electrolux refrigerator is the ratio of
  25. Air refrigeration cycle is used in
  26. As relative humidity decreases, the dew point temperature will be ________ wet bulb temperature.
  27. For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet…
  28. R-12 is generally preferred over R-22 in deep freezers since
  29. The unit of thermal diffusivity is
  30. During adiabatic saturation process on unsaturated air __________ remains constant.

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