HVAC Quiz # 2

Following MCQs practice Quiz is related to ,HVAC ,absorption cooling chillers (single effect and double effect)and Lithium Bromide Chillers.

 

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HVAC Water Chillers Quiz # 2      (See here HVAC quiz # 1)

HVAC Quiz

1. A generator in absorption system heats the solution to

separate the refrigerant
extract strong solution for recycle
vaporize absorbent
Both a & b


2. Absorbent (Lithium bromide) cycles through ____.

Evaporator and absorber
Absorber and generator
Condenser & evaporator
All of above


3. At the low pressure evaporator condition, the solution can absorb additional refrigerant if it

Compressed
Cooled
De-sorbed
Heated


4. In an absorption system, refrigerant

Cycles only between condenser and evaporator
is all time absorbed in the solution throughout the cycle
is most diluted on leaving the absorber
provides cooling in the evaporator


5. When leaving the generator, refrigerant vapors travel to_____and solution travels to_____.

Condenser, absorber
Condenser, evaporator
evaporator,absorber
None of above


6. One of main uses of absorption chillers-heaters is to provide ______

Chilled water only
Chilled & hot water
hot water only
none of above


7. Air ingress in absorption chillers,

increases the vacuum
increases the pressure
has no effect
all of above


8. Absorption chillers operate at

High vacuum
Normal temp & Press
Positive press
All of above


9. Double effect absorption machines have

one generator & one evaporator
two condensers
two generators & one evaporator
none of


10. Non-condensable gases in the system ____ the system pressure and _______system capacity.

decrease, increase
Increase, decrease
do not affect
none of these