Unit 22 Quiz

A cooling tower’s capacity is governed by what aspect of the ambient air?

• Dry-bulb temperature

• Wet-bulb temperature

• Enthalpy of the air

• Altitude

A device that passes outside air over water to remove the system heat is a _______

• cooling tower
• shell-and-shell condensers

• shell-and-tube condensers

• water tower

Air-cooled condensers are much more efficient than water-cooled condensers.

• True

• False

Natural draft, forced draft, and evaporative are all types of _________.

• cooling towers
• refrigerant phases

• package refrigerant systems

• wastewater systems

Condensing temperatures can be reduced by reducing the condenser surface area.

• True

• False

For every 1 degree rise in suction gas temperature returning to the compressor, there will be a ____ degree rise in the compressor’s discharge temperature.

• 10
• 5

• 1

• 30

Condenser flooding is accomplished by __________ in both mild and cold weather to keep the head pressure constant.

• having enough refrigerant in the system to flood the condenser

• applying heat to the compressor crankcase

• having enough refrigerant in the system to raise the suction pressure

• having enough refrigerant in the system to flood the evaporator

Low ambient controls are used on __________ to maintain head pressure during low ambient conditions.

• air-cooled condensers

• water-cooled condensers

• cooling towers

• waste water systems

__________ systems use water once, it is then piped to a drain.

• Package

• Air-cooled condenser

• Recirculating water

• Wastewater

The refrigerant in a condenser in a refrigeration system ____.

• absorbs heat

• is under lower pressure than the evaporator

• changes to a vapor

• rejects heat