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Comparisons between a secondary single-phase fluid and ice-slurry in a supermarket.

Comparaison entre fluide secondaire monophasique et coulis de glace en supermarché.

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

Type of article: Article, Case study

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 high floating pressure. Since ice slurry is efficient for energy storage, ice slurry technology enables off-peak cold production. The paper compares 24-hour operating time of the cooling machine with 8 hours during night time. The different operating times require different storage-tank sizes. The systems have been compared with varying operating conditions, hour by hour, during 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). Simulation has been performed for a fictitious food store in Karlstad in Sweden. The fictitious food store is 2700 m2 with a refrigeration load at 90 kW. Considering energy consumption the comparison shows that ice slurry is favourable in all the cases investigated.

Details

  • Original title: Comparaison entre fluide secondaire monophasique et coulis de glace en supermarché.
  • Record ID : 2007-2108
  • Languages: French
  • Source: Revue générale du Froid & du Conditionnement d'air - vol. 97 - n. 1073
  • Publication date: 2007/05

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