What is the purpose of the suction line in a refrigeration system?

The purpose of the suction line in a refrigeration system is to transport low-pressure vapor to the compressor. In a refrigeration cycle, the refrigerant absorbs heat from the surrounding environment in the evaporator, causing it to change from a liquid to a vapor state. This low-pressure vapor then needs to be moved back to the compressor for the cycle to continue. The suction line plays a crucial role in ensuring that this low-pressure vapor is efficiently directed to the compressor where it is then compressed into high-pressure vapor, allowing the refrigeration process to continue.

This function is vital for maintaining the proper operation of the refrigeration system, as it ensures that the compressor receives the vaporized refrigerant necessary for compression, thereby facilitating the overall cooling process.