What is primarily responsible for keeping the galley's food cool?

The primary responsibility for keeping the galley's food cool typically lies with refrigerator units. Refrigerators are essential for maintaining the appropriate temperature to ensure food safety and prevent spoilage. They work by circulating coolant through coils to remove heat from the food storage area, resulting in a cool environment that preserves perishable items.

While ice machines can provide additional cooling and temporary storage solutions for specific items, they are not the main system for maintaining consistent food temperatures. Similarly, chillers, though they are used for cooling, are generally more associated with larger-scale systems rather than specifically for galley food storage. The term "5 Reefers" would typically refer to specialized refrigeration units but is less common compared to standard refrigerator terminology. Thus, the most accurate answer regarding the main cooling system in a galley context is refrigerator units.