Case study
Dornbirn Skating Rink
Modern, energy-saving indoor skating rink that is easily altered to adapt to changing usage
Key information
Client:
Skating rink
Supplier:
Axima refrigeration technology GmbH, A-Lauterach
Type of facility:
Single-stage NH3 refrigeration system with piston compressors (reciprocating compressors), waste heat exploitation
System start-up:
1999
The Dornbirn Messe (convention centre) operates several exhibition halls used for sporting events, concerts and shows (e.g. the TV show "Wetten dass"). Because the use of the existing open-air facility is dependent on weather conditions, a new multi-purpose indoor stadium was built, for which Axima Refrigeration designed a modern skating rink.
Requirements
The convention stadium called for a modern, energy-saving indoor skating rink that is easily altered to adapt to changing usage.
Solution
The innovative facility is composed of two refrigerant compressors. Indirect cooling, using carbon dioxide as the refrigerant, allows for an improvement in energy consumption by up to 35 percent as compared to using a glycol mixture. The waste heat generated is used to heat the premises as well as warm water. The use of carbon dioxide ensures maximum environmental friendliness, safety and economic efficiency.
Technical data
Cooling capacity:
600 kW
Refrigerant volume:
150 kg
Special features:
In this energy design, the waste heat may be used for heating the premises and warm water. Excess heat is conducted into the earth via piers.
