What happens to moisture at temperatures below -32°F in evaporator systems?

In evaporator systems, moisture present in the air will freeze at temperatures below -32°F. This is because water freezes at 32°F (0°C), and when the temperature drops significantly below this point, any moisture will transform from a liquid state into a solid state, resulting in ice formation. As the temperature continues to drop, the likelihood of moisture remaining in a gaseous or liquid state diminishes, making freezing the predominant outcome under these low-temperature conditions.

Understanding this process is important in industrial refrigeration settings, as the accumulation of ice can lead to performance issues within the system, such as decreased efficiency, blockages, or even damage to the evaporator coils. Thus, managing moisture and understanding its behavior at varying temperatures is critical for maintaining the efficiency and functionality of an ammonia refrigeration system.