Aqua ammonia is used as refrigerant in the following type of refrigeration system_________________?
A. compression
B. direct
C. indirect
D. absorption
E. none of the above
A. compression
B. direct
C. indirect
D. absorption
E. none of the above
A. 1.25
B. 0.8
C. 0.5
D. 0.25
E. none of the above
A. condenser and expansion valve
B. compressor and evaporator
C. expansion valve and evaporator
D. compressor and condenser
E. none of the above
A. 0.2
B. 1.2
C. 5
D. 6
E. 10
A. 10%
B. 25%
C. 50%
D. 75%
E. 100%
A. collect liquid refrigerant and prevent it from going to compressor
B. detect liquid in vapour
C. superheat the vapour
D. collect vapours
E. increase refrigeration effect
A. high, of the order of 25°
B. as low as possible (3 to 11°C)
C. zero
D. any value
E. none of the above
A. of cooling medium
B. of freezing zone
C. of evaporator
D. at which refrigerant gas becomes liquid
E. condensing temperature of ice
Condensing temperature in a refrigerator is the temperature_________________? Read More »
Refrigeration and Air Conditioning A. always less than unity
B. always more than unity
C. equal to unity
D. any one of the above
E. none of the above
The value of COP in vapour compression cycle is usually__________________? Read More »
Refrigeration and Air Conditioning A. less than 2 kg
B. more than or equal to 3.65 kg
C. more than 10 kg
D. there is no such consideration
E. pone of the above