What are the effects of moisture in a refrigeration system?

Moisture in a refrigeration system has significant negative effects, primarily causing ice formation and corrosion. When moisture enters the system, it can mix with the refrigerant and lead to the formation of ice, particularly at expansion devices and evaporators. Ice formation can block refrigerant flow, creating restrictions that diminish the overall efficiency of the system and can cause operational failures.

Moreover, moisture can lead to corrosion within the components of the system. Corrosion can deteriorate key parts such as the compressor, condenser, and evaporator, leading to leaks and reduced lifespan of the components. This not only increases maintenance costs but also results in potential system downtime, negatively impacting the reliability and efficiency of the refrigeration setup.

In contrast, the other choices do not accurately represent the impact of moisture. It does not increase system efficiency or improve refrigerant flow—instead, it hampers them. Additionally, saying moisture has no effect on the system ignores these critical issues, which are essential considerations for maintaining a properly functioning refrigeration system.