Efficient and Ecological System for an Artificial Ice-Rink

摘要

The artificial ice-rink in Miercurea Ciuc – Romania was modernised in the year 2001, inrnorder to conform to local and international regulations. Made in 1970, this covered skating rink,rnwith course dimensions of 60x30 square meters, was meant to be used for hockey, figure skatingrnand leisure purposes. Its placement in an area of great interest for these sports – Romanianrnchampions in figure skating were trained here, and Miercurea Ciuc hockey team is part of thernRomanian hockey elite – determined an extensive use, which led to a constant delay inrnmodernisation operations.rnA solution involving indirect vapour spreading was chosen, using ammonium asrnrefrigerating agent, due to its favourable thermo-dynamic and environment friendly properties.rnSince a small quantity is used (maximum 50 kg, in the refrigerating unit exclusively), it does notrninvolve any risk for athletes or the audience.rnThe refrigerating unit is compact, provided with high efficiency compressors, with arncapacity setting device function of the cooling level required. Heat recovery takes place, and thernunit may operate in a direct air-cooling regime of the course supply fluid, when outside temperaturernfalls below –15 °C.rnThe present paper presents technical data about the refrigeration system, as well as arncomparative analysis of its impact on the environment (its contribution to air heating) of thernprevious solution, as compared to the latest achievement.