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Ammonia heat pump for district heating and cooling of an ice rink.

Author(s) : EGGEN G., NILSEN T., SLETTAHJELL O., et al.

Summary

In 2005, the local energy company Fosenkraft AS in Bjugn in Mid-Norway built a small district heating system for public and domestic buildings. A two stage ammonia heat pump with a heat capacity of 1000 kW is the main energy plant, and sea water is the low temperature heat source for the heat pump. Since the head of the fjord at Bjugn is very shallow, the heat pump collects low temperature heat by means of brine that circulates through 20 km of plastic tubing buried in the seabed. In 2007, the municipality of Bjugn built an ice skating rink, and the ammonia heat pump is also serving as the refrigeration plant for the ice rink. The cooling distribution system in the skating rink is constructed in a similar way as the heat collector in the seabed, and the existing heat pump in Bjugn was a vital reason for the decision to build the ice rink. The district heating plant has been operating for four years, and the ice rink for two seasons. Technically, the ammonia heat pump for heating and cooling has performed very well. The economy of the heat pump based district heating plant will improve with further development of the district heating grid.

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Pages: 2009-2

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Details

  • Original title: Ammonia heat pump for district heating and cooling of an ice rink.
  • Record ID : 2009-1791
  • Languages: English
  • Source: 3th Conference on Ammonia Refrigeration Technology. Proceedings: Ohrid, North Macedonia, May 7-9, 2009.
  • Publication date: 2009/05/07

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