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Planning / Implementation / Main components
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Axima refrigeration technology GmbH, A-Lauterach
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Refrigerant
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ammonia (NH3) / secondary refrigerant carbon dioxide (CO2)
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System start-up
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1999
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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.
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Demands
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The convention stadium called for a modern, energy-saving indoor skating rink that is easily altered to adapt to changing usage.
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Solution
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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.
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