What is the low stage compressor suction temperature in a two-stage package system?

In a two-stage package refrigeration system, the low stage compressor is designed to operate at lower temperatures than a single-stage system. The suction temperature of the low stage compressor is critical for efficient operation and is typically more negative compared to traditional systems.

The correct answer reflects a reasonable suction temperature for the low stage compressor in such systems. A suction temperature of -38°F is typical for applications involving low temperature refrigeration, where the compressor efficiently maintains the desired temperature for the processed goods. Operating within this temperature range ensures that the refrigerant is in a proper state for the compressor to function efficiently, ultimately maintaining the system's overall performance.

Other temperature options may be less common for typical low stage applications. While selecting temperatures such as -35°F or colder values like -40°F and -42°F might seem plausible, they often indicate more specialized applications or operational ranges outside of standard two-stage configurations, potentially leading to inefficiencies or risks in system reliability.