What is the expected suction temperature under abnormal conditions for a compressor?

The expected suction temperature under abnormal conditions for a compressor is typically around 22°F. This temperature is indicative of a condition where the refrigeration system is experiencing difficulties, such as low refrigerant charge, inadequate airflow, or other operational issues.

At 22°F, the compressor is likely dealing with suboptimal performance conditions, which may indicate that the system is not working efficiently. For many industrial refrigeration systems using common refrigerants, this temperature is aligned with the suction line's behavior during irregularities. The choice of 22°F reflects a point at which several factors such as evaporator performance and refrigerant evaporation characteristics combine, resulting in a temperature that is lower than normal operating conditions but still within a range that the system can occasionally handle.

The other temperatures listed, such as 32°F and 45°F, are typically more aligned with normal operational conditions in refrigeration systems or higher than what you would expect under abnormal situations. A suction temperature of 15°F might also represent a very low and potentially damaging temperature if the compressor operates in such a condition for an extended period, indicating more severe issues than what is represented by 22°F.