What are the primary components of the R-12 refrigeration system?

The correct answer highlights the essential components of the R-12 refrigeration system, which includes the thermal expansion valve (TXV), evaporator, compressor, condenser, and receiver.

The thermal expansion valve plays a crucial role in controlling the flow of refrigerant into the evaporator, ensuring that the system operates smoothly by regulating the refrigerant's pressure and temperature. The evaporator is where the refrigerant absorbs heat from the environment, causing it to evaporate and cool the air passing over it.

The compressor is vital for circulating the refrigerant throughout the system; it compresses the refrigerant vapor from the evaporator, increasing its pressure and temperature before it moves on to the condenser. The condenser then facilitates the release of heat from the refrigerant as it changes from a vapor back into a liquid. Lastly, the receiver stores the refrigerant in liquid form before it returns to the thermal expansion valve, completing the cycle.

Understanding these components and their functions is essential for anyone working with refrigeration systems, as each part plays a significant role in the overall operation and efficiency of the system.