Compressors Flashcards
What is the primary function of a reciprocating refrigeration compressor?
To compress refrigerant gas to a higher pressure and temperature.
True or False: Reciprocating compressors operate using a rotating mechanism.
False
Fill in the blank: The reciprocating compressor uses _____ to compress the refrigerant.
pistons
What are the two main types of reciprocating compressors?
Single-acting and double-acting compressors.
Which component of the reciprocating compressor is responsible for the intake and exhaust of refrigerant?
Valves
Multiple choice: What type of lubrication method is commonly used in reciprocating compressors? (A) Dry lubrication (B) Oil lubrication (C) Water lubrication
B) Oil lubrication
What is the typical compression ratio range for reciprocating compressors?
3:1 to 10:1
True or False: Reciprocating compressors are typically more efficient than rotary compressors.
True
What is the main advantage of using a double-acting reciprocating compressor?
Increased efficiency due to compression occurring on both sides of the piston.
Fill in the blank: The _____ of a reciprocating compressor helps control the speed of the compression cycle.
crankshaft
What is a common application for reciprocating refrigeration compressors?
Commercial refrigeration and air conditioning systems.
Multiple choice: Which of the following is a disadvantage of reciprocating compressors? (A) Low initial cost (B) Higher noise levels (C) Compact size
B) Higher noise levels
True or False: Reciprocating compressors can handle varying loads effectively.
False
What is the role of the discharge valve in a reciprocating compressor?
To allow the compressed refrigerant to exit the cylinder.
Fill in the blank: The _____ is used to convert the rotary motion of the motor to linear motion in the piston.
connecting rod
What type of maintenance is crucial for the efficiency of reciprocating compressors?
Regular oil changes and inspection of moving parts.
Multiple choice: What is a common refrigerant used in reciprocating compressors? (A) R-22 (B) R-404A (C) Both A and B
C) Both A and B
What is the purpose of the crankcase in a reciprocating compressor?
To house the crankshaft and provide lubrication.
True or False: Reciprocating compressors are less suitable for high-capacity applications compared to other compressor types.
True
What factor primarily affects the performance of a reciprocating compressor?
The design of the compressor and the operating conditions.
Fill in the blank: The _____ cycle describes the thermodynamic process in a reciprocating compressor.
Carnot
What is the typical lifespan of a well-maintained reciprocating compressor?
10 to 15 years
Multiple choice: Which part of a reciprocating compressor helps to minimize vibration? (A) Piston rings (B) Vibration dampers (C) Discharge valves
B) Vibration dampers
What is the significance of piston rings in a reciprocating compressor?
To create a seal and prevent refrigerant leakage.
True or False: Reciprocating compressors can only operate with a single type of refrigerant.
False
