The operating temperature of a cold storage is 2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

A. 1.86 kW

B. 3.72 kW

C. 7.44 kW

D. 18.6 kW

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  1. The boiling point of ammonia is
  2. The fluids used in Electrolux refrigerator are
  3. Which of the following statement is correct?
  4. It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature…
  5. The condensing pressure due to the presence of non-condensable gases, as compared to that actually required…
  6. In mechanical refrigeration system, the refrigerant has the maximum temperature
  7. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity…
  8. The formation of frost on cooling coils in a refrigerator
  9. In a reversed Brayton cycle, the heat is absorbed by the air during
  10. The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature,…
  11. For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
  12. During heating and dehumidification process, dry bulb temperature
  13. The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative…
  14. One ton of the refrigeration is
  15. Moisture should be removed from refrigerants to avoid
  16. In a saturated air-water vapour mixture, the
  17. A refrigerant with the highest critical pressure is
  18. During dehumidification process, the relative humidity
  19. Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption…
  20. At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant
  21. The bypass factor of a cooling coil decreases with
  22. The sensible heat factor during cooling and dehumidification process is given by (where h₁ =…
  23. Oil separator in a refrigeration cycle is installed
  24. Which of the following statement is wrong?
  25. Wet bulb temperature is the temperature of air recorded by a thermometer, when
  26. The coefficient of performance is the ratio of the refrigerant effect to the
  27. A vapour absorption refrigerator uses __________ as a refrigerant.
  28. The freezing point of sulphur dioxide is
  29. The temperature of air recorded by a thermometer, when it is not affected by the moisture present in…
  30. Air refrigeration cycle is used in