What is the common refrigerant used in ice rinks?

The most common refrigerants used in ice rinks are ammonia and propylene glycol. Ammonia is favored for its excellent thermodynamic properties, which allow for highly efficient heat transfer. It’s particularly effective in large-scale refrigeration systems such as those used in ice rinks, where maintaining low temperatures is critical for optimal ice quality. Propylene glycol, on the other hand, is frequently used as a secondary refrigerant and is popular due to its non-toxic nature, making it suitable for use in environments where there may be a risk of leaks into public areas or water supplies.

Ammonia systems, while effective, require careful handling due to ammonia's toxic and pungent characteristics. Propylene glycol is often mixed with water and circulated through the ice slab and is considered a safer alternative for smaller rinks or for systems that prioritize safety due to the proximity of the ice to participants and spectators.

Using these refrigerants helps operators maintain a consistent and effective cooling system, which is essential for producing quality ice and ensuring safety on the rink.