What type of refrigeration system is commonly used in ice arenas?

The indirect refrigeration system is commonly used in ice arenas due to its ability to provide efficient temperature control while minimizing the risks associated with direct refrigerants in the ice surface. In this system, a secondary fluid, typically water or a brine solution, is used to absorb heat from the ice surface and then carries that heat to a remote chiller where the refrigerant operates. This setup allows for better control of the ice temperature and enhances safety, as the refrigerant is kept separate from the ice and the air in the arena.

Additionally, using an indirect system helps manage the potential for leaks or failures since any refrigerant issues would not directly impact the ice surface area. This system can also be more efficient because it allows for better distribution of the refrigeration effect over larger ice surfaces, which is critical in maintaining consistent ice quality in large arenas.

In contrast, direct refrigeration systems can pose risks related to exposure to refrigerants, and hybrid or cascade systems, while useful in certain applications, are less common in the specific context of ice arenas. These other types might not offer the same advantages in terms of safety and ice quality control as the indirect refrigeration system does.