What does the speed skating hall use to make ice?

Ice-making technology with carbon dioxide transcritical direct cooling.

In order to reduce carbon emissions, the National Speed Skating Hall adopted the ice-making technology of carbon dioxide transcritical direct cooling for the first time in the history of the Olympic Games. This is the most environmentally friendly ice-making technology in the world at present, and its carbon emission is close to zero. At the same time, it is also the most advanced ice-making technology in the world, and its ice temperature difference can be controlled within 0.5 degrees Celsius.

Setup of National Speed Skating Hall

The competition area of the National Speed Skating Hall includes three 400-meter speed skating competition lanes, a speed skating competition practice lane, a 60-meter X30-meter multifunctional skating rink (short track speed skating mode), a 6 1 meter X3 1 meter multifunctional skating rink (ice hockey and figure skating mode) and an active skating rink, which can meet the needs of skating, curling, ice hockey and other events being held at the same time and the public.

The ice surface of the National Speed Skating Hall provides a different venue for daily mass ice fitness. After the game, more than 2,000 citizens can be received to carry out all ice sports such as ice hockey, speed skating, figure skating and curling at the same time, and commercial performance space can be reserved after the game.

The above contents refer to the "Ice Ribbon" of Xinhuanet-National Speed Skating Hall, and the ice was made successfully for the first time.