ACR-202 Quiz Week 9

The two main types of chiller systems are? (select all that apply)

• compression

• reciprocating

• absorbtion

• liquid compression

Chiller barrels move refrigerant and water through them in _______ _______ to maximize their heat exchange.

• opposite directions
• same directions
• random directions
• circular motion

The four common compressors for a chiller are...?

• Reciprocating, Screw, Centrifugal, Scroll
• Piston, Turbine, Centrifugal, Scroll
• Reciprocating, Screw, Turbine, Scroll
• Piston, Screw, Centrifugal, Scroll

What is considered to be the "secondary refrigerant" in a chiller system?

• Compressor
• Condenser
• Cooling Water
• Evaporator

What absorbs heat from a building using a chiller system?

• Air conditioning unit
• Refrigerator
• Cool water

• Heater

What can prevent a proper heat exchange in a chiller barrel?

• Lack of maintenance
• Too much sunlight
• Incorrect installation
• Excessive use

Chillers reject heat at the

• chiller barrell

• cooling tower

• fan coil unit

• fan coil assembly

Instead of using refrigerant, absorption chillers use...(select all that apply)

• Water
• Air
• Ammonia
• R-707

• Lithium bromide

From the list below, which are advantages that ammonia has over refrigerants.

• Ammonia is non-toxic and non-flammable
• Ammonia has a high refrigeration capacity
• Ammonia is not harmful to the ozone layer
• Ammonia is expensive and difficult to handle

What is the advantage of having multiple small chillers in a building versus one large chiller?

• It reduces the overall energy consumption of the building by reducing or increasing chillers in service based off heat load.

• It increases the cooling capacity of the building
• It makes the building look more modern
• It increases the value of the building