The Russian Sochi Ice skating Arena made by Euro Air is a project which was requested from Coolmark, one of our distributors in Holland. Coolmark worked with Boukens one of the contractors for this project. Boukens is a specialist in cooling applications. The principal is based on another Ice Skating Arena Astana made by Euro Air in Kazakhstan and again Coolmark & Boukens were specified.
A few technical insights:
We usually use light injekt with nozzles and one rule is to make sure that the airspeed above the ice is below 0,15 m/s.
Always make sure that CO2 from the public does not go onto the ice, CO2 is heavier than air and will remain on the ice making it to become grey and this may cause wet ice.
Most skating arena have glass around the ice patch, blow air at about 1 m. above the public (0,25-0,3 m/s) to reduce the heat load the public can generate.