Unit 23 Refrigeration Compressors Flashcard

Front

What is the temperature of the compressed gas leaving the compressor?

Back

The temperature of the compressed gas leaving the compressor is very warm.

Front

What happens to the amount of refrigerant pumped by a reciprocating compressor if the compression ratio decreases?

Back

If the compression ratio decreases, the amount of refrigerant pumped by the compressor will increase.

Front

Why are scroll compressors becoming popular?

Back

Scroll compressors are becoming popular because they can handle liquid floodback without compressor damage.

Front

What can happen if liquid enters the compression chamber of a reciprocating compressor?

Back

Liquid entering the compression chamber can lead to damaged valves and damaged piston rings.

Front

What is the purpose of mufflers in fully hermetic compressors?

Back

Mufflers are used to muffle compressor pulsation noise.

Front

What is a refrigeration compressor?

Back

A refrigeration compressor is a mechanical device that increases the pressure of refrigerant gas, allowing it to circulate through the refrigeration system.

Front

What is the function of a reciprocating compressor?

Back

The function of a reciprocating compressor is to compress refrigerant gas by using a piston to create a pressure differential.

Front

What is liquid floodback in refrigeration systems?

Back

Liquid floodback refers to the unintended return of liquid refrigerant to the compressor, which can cause damage.

Front

What are the consequences of liquid refrigerant entering a compressor?

Back

Consequences include damaged valves, damaged piston rings, and reduced efficiency.

Front

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

Back

The expansion valve regulates the flow of refrigerant into the evaporator, allowing for pressure reduction and temperature drop.