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Absorption system normally uses the following refrigerant

A. Freon-11

B. Freon-22

C. CO2

D. Ammonia

Correct Answer : D.


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  13. Wet bulb temperature is the temperature of air recorded by a thermometer, when
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  15. Which of the following refrigerant has the highest freezing point.
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  17. As relative humidity decreases, the dew point temperature will be ________ wet bulb temperature.
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  20. In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor)
  21. The mass of water vapour present in __________ is called absolute humidity.
  22. The boiling point of carbon dioxide is
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