REFRIGERATION AND AIR CONDITIONING

Domestic refrigerators ✘ Commercial refrigerators ✘ Air conditioning ✘ Gas liquefaction ✔

Is less than 1 ✘ Is more than ✘ Is equal to 1 ✘ None of the above ✔

Centrifugal ✘ Axial ✘ Miniature sealed unit ✘ Piston type reciprocating ✔

Centrifugal ✘ Axial ✘ Miniature sealed unit ✘ Piston type reciprocating ✔

CO2 ✘ Air ✘ Freon-11 ✘ Freon-22 ✔

CO2 ✘ SO2 ✘ Ammonia ✘ Freon-22 ✔

Lower than atmospheric pressure ✘ Higher than atmospheric pressure ✘ Equal than atmospheric pressure ✘ None of the above ✔

Condenser tube ✘ Evaporator tube ✘ Refrigerant colling tubes ✘ Capillary tubes ✔

50 kcal/min ✘ 50 kcal/kr ✘ 80 kcal/min ✘ 80 kcal/kr ✔

210 kj/min ✘ 21 kj/min ✘ 420 kj/min ✘ 840 kj/min ✔