In a refrigeration cycle, the flow of refrigerant is controlled by

A. Compressor

B. Condenser

C. Evaporator

D. Expansion valve

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  1. The heat rejection factor (HRF) is given by
  2. The desirable property of a refrigerant is
  3. The material of pipe lines for a system using Freon as a refrigerant should be
  4. The wet bulb temperature during sensible cooling of air
  5. In mechanical refrigeration system, the refrigerant has the maximum temperature
  6. As relative humidity decreases, the dew point temperature will be ________ wet bulb temperature.
  7. The coefficient of performance of Electrolux refrigerator is the ratio of
  8. Ammonia absorption refrigeration cycle requires
  9. The specific humidity during humidification process
  10. The wet bulb depression is zero when relative humidity is
  11. In order to cool and dehumidify a stream of moist air, it must be passed over the coil at a temperature
  12. The superheated vapour region, in a pressure enthalpy chart, is represented by the space
  13. The condensing pressure due to the presence of non-condensable gases, as compared to that actually required…
  14. In case of sensible cooling of air, the coil efficiency is given by
  15. Which of the following statement is wrong?
  16. The central air conditioning system has ________ overall efficiency as compared to individual systems.
  17. Allowable pressure on high pressure side or ammonia absorption system is of the order of
  18. The advantage of dry compression is that
  19. R-12 is generally preferred over R-22 in deep freezers since
  20. A standard ice point temperature corresponds to the temperature of
  21. Chaperon equation is a relation between
  22. The thermostatic expansion valve operates on the changes in the
  23. The pressure at the outlet of a refrigerant compressor is called
  24. The capillary tube, as an expansion device, is used in
  25. Refrigeration in aeroplanes usually employs the following refrigerant
  26. Absorption system normally uses the following refrigerant
  27. A human body feels comfortable when the heat produced by the metabolism of human body is equal to the
  28. Condensing temperature in a refrigerator is the temperature
  29. Under cooling in a refrigeration cycle
  30. The refrigerant widely used in domestic refrigerators is