REFRIGERATION AND AIR CONDITIONING QUIZ

Two cooling turbines and two heat exchangers

One cooling turbine and one heat exchanger

Two cooling turbines and one heat exchanger

One cooling turbine and two heat exchangers

Remains constant

Increases

Decreases

None of these

Before passing through the condenser

After passing through the expansion throttle valve

After passing through the condenser

Before entering the expansion valve

After passing through the condenser

After passing through the expansion or throttle valve

Before entering the expansion valve

Before passing through the condenser

0.1 to 0.5 h.p. per ton of refrigeration

1 to 2 h.p. per ton of refrigeration

2 to 5 h.p. per ton of refrigeration

0.5 to 0.8 h.p. per ton of refrigeration

R-12

R-11

R-22

Ammonia

None of these

Absolute

Specific

Relative

noisy operation

cooling below 0°C

quiet operation

very little power consumption

Three fluids

None of the listed here

Single fluid

Two fluids

Sub-cooled liquid

Liquid

Saturated liquid

Wet vapour