Aux 2 Unit 11 Quiz 1

Aux 2 Unit 10 Q6

1 / 8

What is the function of the cooling tower in a chilled water system?

B) To cool the condenser water before it enters the condenser

A) To cool the indoor air directly

C) To increase the refrigerant pressure

D) To evaporate excess refrigerant

2 / 8

What type of fluid is used as the heat transfer medium between the chiller and the air handling unit?

D) Glycol solution only

A) Refrigerant

C) Chilled water

B) Compressed air

3 / 8

Which of the following components ensures the correct flow and pressure of refrigerant in the system?

B) Chiller condenser

D) Cooling tower pump

A) Air handling unit

C) Expansion valve

4 / 8

What role does the air handling unit (AHU) play in an indirect expansion system?

A) It acts as the compressor for the refrigerant

D) It condenses the refrigerant

B) It circulates refrigerant to different parts of the system

C) It circulates chilled water to absorb heat from the air and distribute cooled air

5 / 8

Which component in an indirect expansion, chilled water air conditioning system is responsible for cooling the water?

A) Air handling unit

D) Evaporator fan

B) Cooling tower

C) Chiller

6 / 8

Why is an indirect expansion system often preferred in large air conditioning installations?

B) It uses only refrigerant for direct cooling

A) It requires fewer components

C) It allows for centralized cooling and better temperature control across large spaces

D) It consumes more energy but is easier to maintain

7 / 8

Which of the following is the primary function of an indirect expansion, chilled water air conditioning system?

C) To heat the air using an evaporative cooler

D) To increase humidity levels in the space

B) To cool the air by circulating chilled water that transfers heat from the air to a refrigerant-cooled chiller

A) To cool the air directly using refrigerant

8 / 8

Where does the phase change of the refrigerant from liquid to vapor typically occur in an indirect expansion system?

A) In the air handling unit

B) In the chiller's evaporator

C) In the cooling tower

D) In the expansion valve

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