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Ice rink refrigeration system with CO2 as secondary fluid.

Author(s) : ROGSTAM J., SAWALHA S., NILSSON P. O.

Summary

CO2 as a phase changing secondary fluid has advantages compared to traditional secondary fluids where the low pumping power required is the most dominant. This technology has gained a lot of ground in the supermarket field recently. Among energy-consuming refrigeration applications ice rinks can be mentioned as a significant example, therefore this application is of potential interest for a pumped CO2 solution. A miniature ice rink has been built to evaluate CO2 as secondary fluid. In a few reference plants, CO2 has already been used in a steel pipe system. Steel pipes have an inherent high installation cost, so this study proposed to evaluate the use of copper tubes in the ice rink floor. The copper tube circuits were 60 m long and covered in concrete according to the standard construction method. The system was instrumented to evaluate the pressure drop and heat transfer in the tubes. The investigation proved that the copper tube concept can be used in full scale plants, and a significant cost saving can be achieved compared with a steel pipe installation. The pump power is significantly less compared with a traditional ice rink and the yearly energy saving for a full scale indoor ice hockey facility is about 150 000 kWh.

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Pages: 2005-3

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Details

  • Original title: Ice rink refrigeration system with CO2 as secondary fluid.
  • Record ID : 2006-0621
  • Languages: English
  • Source: Commercial Refrigeration. Thermophysical Properties and Transfer Processes of Refrigerants. Proceedings of the IIR International Conferences.
  • Publication date: 2005/08/02

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