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A comparison between single-phase and ice slurry as secondary fluid in supermarkets.

Author(s) : HÄGG C., ARIAS J., LUNDQVIST P.

Summary

Ice slurry is an advanced two-phase secondary fluid. This paper investigates whether or not ice slurry is competitive with single-phase secondary fluids for medium temperature in supermarkets for two common food store system solutions: heat recovery and floating condensing. Since ice slurry is efficient for energy storage in accumulator tank ice slurry technology enables off peak cold production. The paper compares 24 hours operating time of the cooling machine with 8 hours performed during the night. The different operating times require different accumulator tank sizes. The systems have been compared with varying operating conditions, on the hour, over one year in a simulating programme named CyberMart. CyberMart is a programme used to simulate refrigeration and energy systems in supermarkets. The programme was developed at the Division of Applied Thermodynamics and Refrigeration at the Royal Institute of Technology (KTH). The simulation has been performed for a fictitious food store in Karlstad in Sweden. The fictitious food store is 2700 m2 with a refrigeration load of 90 kW. Considering energy consumption, the comparison shows that ice slurry is the preferred option in all the cases studied.

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Pages: 2005-3

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Details

  • Original title: A comparison between single-phase and ice slurry as secondary fluid in supermarkets.
  • Record ID : 2006-0790
  • Languages: English
  • Source: Commercial Refrigeration. Thermophysical Properties and Transfer Processes of Refrigerants. Proceedings of the IIR International Conferences.
  • Publication date: 2005/08/30

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