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Refrigeration > Compressors > Flashcards

Compressors Flashcards

1
Q

What is the primary function of a reciprocating refrigeration compressor?

A

To compress refrigerant gas to a higher pressure and temperature.

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2
Q

True or False: Reciprocating compressors operate using a rotating mechanism.

A

False

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3
Q

Fill in the blank: The reciprocating compressor uses _____ to compress the refrigerant.

A

pistons

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4
Q

What are the two main types of reciprocating compressors?

A

Single-acting and double-acting compressors.

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5
Q

Which component of the reciprocating compressor is responsible for the intake and exhaust of refrigerant?

A

Valves

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6
Q

Multiple choice: What type of lubrication method is commonly used in reciprocating compressors? (A) Dry lubrication (B) Oil lubrication (C) Water lubrication

A

B) Oil lubrication

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7
Q

What is the typical compression ratio range for reciprocating compressors?

A

3:1 to 10:1

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8
Q

True or False: Reciprocating compressors are typically more efficient than rotary compressors.

A

True

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9
Q

What is the main advantage of using a double-acting reciprocating compressor?

A

Increased efficiency due to compression occurring on both sides of the piston.

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10
Q

Fill in the blank: The _____ of a reciprocating compressor helps control the speed of the compression cycle.

A

crankshaft

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11
Q

What is a common application for reciprocating refrigeration compressors?

A

Commercial refrigeration and air conditioning systems.

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12
Q

Multiple choice: Which of the following is a disadvantage of reciprocating compressors? (A) Low initial cost (B) Higher noise levels (C) Compact size

A

B) Higher noise levels

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13
Q

True or False: Reciprocating compressors can handle varying loads effectively.

A

False

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14
Q

What is the role of the discharge valve in a reciprocating compressor?

A

To allow the compressed refrigerant to exit the cylinder.

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15
Q

Fill in the blank: The _____ is used to convert the rotary motion of the motor to linear motion in the piston.

A

connecting rod

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16
Q

What type of maintenance is crucial for the efficiency of reciprocating compressors?

A

Regular oil changes and inspection of moving parts.

17
Q

Multiple choice: What is a common refrigerant used in reciprocating compressors? (A) R-22 (B) R-404A (C) Both A and B

A

C) Both A and B

18
Q

What is the purpose of the crankcase in a reciprocating compressor?

A

To house the crankshaft and provide lubrication.

19
Q

True or False: Reciprocating compressors are less suitable for high-capacity applications compared to other compressor types.

A

True

20
Q

What factor primarily affects the performance of a reciprocating compressor?

A

The design of the compressor and the operating conditions.

21
Q

Fill in the blank: The _____ cycle describes the thermodynamic process in a reciprocating compressor.

A

Carnot

22
Q

What is the typical lifespan of a well-maintained reciprocating compressor?

A

10 to 15 years

23
Q

Multiple choice: Which part of a reciprocating compressor helps to minimize vibration? (A) Piston rings (B) Vibration dampers (C) Discharge valves

A

B) Vibration dampers

24
Q

What is the significance of piston rings in a reciprocating compressor?

A

To create a seal and prevent refrigerant leakage.

25
Q

True or False: Reciprocating compressors can only operate with a single type of refrigerant.

A

False

Refrigeration (2 decks)

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