The main parts of a refrigerant reciprocating compressor do not include which of the following?

In a refrigerant reciprocating compressor, the main components include the compressor body, pistons and connecting rods, as well as the suction and discharge valves. These elements work together to compress the refrigerant gas, facilitate its movement through the system, and ensure proper functioning.

The compressor body serves as the housing for all components and provides structural support. Pistons and connecting rods are crucial for the actual compression process, as they convert the rotational motion from the motor into linear motion, compressing the refrigerant gas. Additionally, the suction and discharge valves regulate the flow of refrigerant into and out of the cylinder during the compression cycle.

The rotor, however, is not a component of a reciprocating compressor. Rotors are found in rotary compressors, which operate on a different principle than reciprocating compressors. Therefore, excluding the rotor from the main parts is accurate, as it does not belong to the design of a reciprocating compressor. Understanding the distinct types of compressors and their components is essential for anyone working in power engineering or refrigeration systems.