Which is a common feature of scroll compressors?

A common feature of scroll compressors is their ability to handle liquid refrigerant. This is significant because scroll compressors are designed with a unique mechanism that can accommodate small amounts of liquid refrigerant without the immediate risk of damage or performance loss. Unlike some compressor types that can be severely impacted by liquid entering the compression chamber, scroll compressors can manage this scenario more effectively, allowing for greater flexibility in system design and operation.

In refrigerant systems, especially during start-up or if the system isn't perfectly balanced, there's a potential for liquid refrigerant to enter the compressor. The ability to handle this situation helps ensure reliability and efficiency in various operating conditions. This is particularly important in refrigeration and air conditioning applications where the risk of liquid slugging is a concern.

Other choices, while they might pertain to different types of compressors, do not reflect the defining characteristics of scroll compressors. Internal gears for motion typically pertain to rotary compressors, while larger physical size is not inherently a feature of scroll compressors as they are often compact. Additionally, higher noise levels are usually associated with reciprocating compressors rather than scroll compressors, which are generally quieter in operation due to their continuous compression mechanism.