METRO St. Pölten

CO2 solution ROXSTA2.0

Application

Metro-Großmarkt “Zero 1” (St. Pölten/Austria) – Size of the market: 8,500 m2

  • Cooking of the refrigeration cabinets: 62 MT-storage racks, 4 LT-cabinets & 34 LT areas)
Refrigeration specialist

kke gmbh Kälte-, Klima- und Energietechnik (Kesselsdorf)

Technology in use

ROXSTA2.0

  • Refrigerant: CO2 (R 744)
  • MT: 227 kW (t0 -6/tGK 36°C) – 6 Bock-compressor  (1 compressor with frequency converter)
  • LT: 89 kW (t0 -30/tGK 6°C) – 4 Bock-compressor  (1 compressor with frequency converter)
Special features
  • Ejectors
  • Heat recovery COOL2HEATbasic for water heating & retail outlet heating of floor panels: 160 kW (Water inlet/outlet 26/32°C)
  • Parallel compression
  • Refrigeration of goods/office air conditioning panel: 16 kW
  • Gas cooler bypass
  • Suction gas heat exchanger for each suction pressure stage
  • Frequency converter for each suction pressure stage (parallel compressor, MT, LT)
Control

Wurm-control electronics TECO2-G3: Compound, medium pressure and high pressure valves, gas cooler control with bypass switching, heat recover unit (COOL2HEATbasic) and all cooling points