When dealing with compressors, what does the term "suction header" refer to?

The term "suction header" refers to the area where vapor enters the compressor. In a refrigeration or air conditioning system, the suction header collects vapor refrigerant from various evaporators or other components before it is drawn into the compressor. This design allows for the efficient gathering of refrigerant gas, ensuring that the compressor operates optimally by providing a steady supply of refrigerant vapor that needs to be compressed.

Understanding the function of the suction header is vital for effective system operation and maintenance, as it plays a critical role in the overall cycle of refrigerant flow. Improper design or issues within the suction header can lead to inefficiencies, resulting in increased operational costs and potential system failures. In contrast, the other terms provided refer to different parts of the system where different functions occur, such as the discharge of refrigerant or the locations of liquid lines and expansion devices, which do not coincide with the purpose of the suction header.