How is the refrigerant discharged in a double acting compressor?

In a double acting compressor, the refrigerant is discharged from both ends of the cylinder simultaneously. This design allows for a more efficient and continuous operation as both sides of the piston are utilized during the compression process. When the piston moves, it compresses the refrigerant on both strokes: during the forward stroke, refrigerant is compressed and discharged from one end, while on the return stroke, the process is repeated at the opposite end of the cylinder.

This dual-action mechanism enhances the overall output of the compressor and can help maintain more consistent pressure, making it a preferred choice in applications where high efficiency and reliability are required. The other choices do not accurately represent the operation of a double acting compressor. The system is designed to leverage the capabilities of both ends, unlike an option that suggests discharge from only one end, which would limit the compressor's effectiveness.