Refrigeration and Air Conditioning

A. more
B. less
C. same
D. more/less depending on size of plant
E. unpredictable

A. more
B. less
C. equally.
D. unpredictable
E. none of the above

A. Freon-12
B. NH3
C. C02
D. Freon-22
E. S02

A. same
B. more
C. less
D. more or less depending on ambient conditions
E. unpredictable

A. lowers evaporation temperature
B. increases power required per ton of refrigeration
C. lowers compressor capacity because vapour is lighter
D. reduces weight displaced by piston
E. all of the above

A. vapour compression
B. vapour absorption
C. carnot cycle
D. electrolux refrigerator
E. dual cycle

A. increase
B. decrease
C. remain unaffected
D. may increase or decrease depending on the type of refrigerant used
E. unpredictable

A. high
B. low
C. optimum
D. any value
E. there is no such criterion

A. increases COP
B. decreases COP
C. COP remains unaltered
D. other factors decide COP
E. unpredictable

A. ineffective refrigeration
B. high power consumption
C. freezing automatic regulating valve
D. corrosion of whole system
E. breakdown of refrigerant