When considering the presence of water in a vapor-cycle cooling system, which statement is true?

In vapor-cycle cooling systems, the presence of water can significantly impact the performance and efficiency of the system. Water vapor can condense within the system, potentially leading to a number of issues such as reduced heat transfer efficiency, increased pressure drops, and potential corrosion. The second statement likely addresses these consequences and highlights the relevance of water in the system's operation.

Understanding the behavior of refrigerants and the influence of water helps in designing more effective systems and in troubleshooting existing installations. When water is present, it indicates a possible issue that must be addressed to ensure optimal functioning of the cooling system. The critical aspect here is recognizing that water plays an active role in the system dynamics, especially in terms of efficiency and reliability.