ACR 105 Week 11

What is the primary function of the condenser?

• Reject heat from the refrigerated space

• Cool the air-cooled compressor with the condenser fan.

How can the temperature of refrigerant be increased without adding excessive heat?

• Raise the pressure of the refrigerant.

• Lower the pressure of the refrigerant.

• Raise the temperature going through the condenser

What role does the evaporator play in a refrigeration cycle?

• It absorbs heat from the environment.

• It releases heat to the environment.

• It increases the pressure of the refrigerant.

Why is the refrigerant compressed in a refrigeration cycle?

• To decrease its temperature before it enters the evaporator.

• To increase its temperature so it can reject heat in the condenser.

• To maintain its state as a liquid throughout the cycle.

What is the purpose of the expansion valve in a refrigeration system?

• To increase the pressure of the refrigerant before it enters the evaporator.

• To cool down the refrigerant before it enters the condenser.

• To reduce the pressure of the refrigerant, allowing it to absorb heat in the evaporator.

What are the three phases of the condenser?

• Superheat, condense, and subcool.

• Subcool, supercool, and condense.

  
  

• De-superheat, condense, and subcool.

  
  

Where does the superheat in discharge gas come from?

• Heat of compression.

  
  

• Compressor motor heat.

• Suction vapor superheat.

• All of the above

What is condenser split?

• Superheat

• The difference between ambient air and condensing temperature.

  
  

• subcooling system

• The difference in temperature across the coil

What effect does the subcooling of the refrigerant have on a refrigeration system?

• Decreases the efficiency of the system

• Increases the risk of compressor damage

• Increases the system's cooling capacity

• Has no effect on the system's performance

Why is it important to maintain proper superheat at the compressor inlet?

• To ensure efficient lubrication of the compressor

• To prevent liquid refrigerant from entering the compressor

• To increase the temperature of the refrigerant

• To decrease the pressure of the refrigerant