10. ACR-104 UNIT 23 REVIEW QUESTIONS

Two things in the design of a reciprocating compressor that directly affect its efficiency are:

• Lubrication method and suction line size

• Suction and discharge line size

• Valve design and clearance volume

• Clearance volume and IPR setting

What would be considered a higher-than-normal temperature for a discharge gas line on a reciprocating compressor?

• 190°F

• 215°F

• 250°F

• All of the above

Which compressor type uses pistons to compress the gas?

• Scroll

• Reciprocating

• Rotary

• Screw

Which compressor type uses tapered, machined gear components to trap the gas for compression?

• Scroll

• Reciprocating

• Rotary

• Screw

Which style of compressor uses belts to turn the compressor?

• Open drive

• Closed drive

• Chassis drive

• Hermetic drive

What would be done to increase the compressor speed on a belt-driven compressor?

• Decrease drive pulley size

• Increase drive pulley size

• Increase driven pulley size

• Both A and C

At what speeds in rpm does a hermetic compressor normally turn?

• 1750

• 3450

• 4500

• Both A and B

What lubricates the refrigeration compressor?

• Refrigerant

• Moisture

• Desiccants

• Oil

A compressor can compress a liquid.

• True

• False