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CO₂ Racks & Packs

Multi compressor units

Tewis Duplex CO2 commercial rack

Duplex - CD4G,CD4H, CD4J – High power CO2 Commercial Racks

Full Duplex offers the highest power for the commercial cold range with CO2 in 2 MT and LT temperatures

  • Reduced assembly space with the double-deck transcritical cycle booster machines.

  • The modulation and operational reliability is ensured thanks to the number of compressors they house.

  • Can include up to 3 heat exchangers and 1 parallel compressor (optional)

  • Possibility of 2 RHX: 1 for Domestic Hot Water and 1 for air conditioning

Cooling capacity: from 8 kW up to 250 kW – Heat recovery up to 190 kW

Tewis Mini NS21 CO2 mini compressor rack

Mini NS21 – Compact CO2 Mini Compressor Racks

  • Compact units, with a footprint of less than 1m2

  • Highly competitive for the generation of cold with CO2 in the transcritical cycle

  • For refrigeration & freezing – working as a booster

  • Designed for easy access to the components

Cooling capacity: 18 to 45 kW 

Application: 200 to 600 m2

For use in:

  • Food retail (convenience stores & supermarkets) 
  • Petrol station forecourt solutions
  • Hospitality industry
  • Cold rooms
Tewis Smart Rack - Transcritical CO2 compact rack

Smart Rack – Transcritical CO2 Compact Rack

Flexible and modular solution for application in food retail (supermarkets and convenience stores), cold stores and small industry – covering surfaces of 400-1500m2.

  • Compact unit, with flexible design

  • Equipped for the generation of cold with CO2 in the transcritical cycle

  • For refrigeration services in one or two temperatures – working as a booster

  • Optionally can include up to 1 exchangers and 1 parallel compressor

Capacity: up to 115 kW (MT), Booster: up to 90 kW (MT) + 25 kW (LT)

Application: 400 to 1500 m2

Tewis transcritical rack without condenser

Medium Racks – Transcritical units without condenser

  • Adapted design for loading and transportation

  • Integrated switchboard. Easy to use via touch screen and displays an exclusive control software

  • Heat recovery (optional) - allows to take advantage of the heat generated by the system discharge for air conditioning or ACS

  • Parallel compressor (optional)

  • Parallel compression includes one or two compressors that extract steam from the accumulation tank, lightening the load of the rest of the compressors and improving their efficiency index.

  • Possibility of incorporating up to 4 compressors

  • Proportional modulation: A frequency inverter in each group of compressors adapts its operation to the specific demand of each moment, saving energy and prolonging the life of the plant

  • Mechanical subcooler exchanger, connected to an auxiliary unit that cools the discharge of the transcritical fluid, reducing steam and increasing the efficiency of the system

Tewis transcritical double rack without condenser

Large Racks – Transcritical double units without condenser

  • Integrated switchboard. Easy to use via touch screen and displays an exclusive control software

  • Parallel compressors (optional), which considerably increase the system efficiency

  • Possibility of incorporating up to 9 compressors

  • Low and Medium temperature compressors

  • Economizer: Increases the efficiency of the system by making the MT compressors give part of their power to the LT compressors group

  • Proportional modulation: A frequency inverter in each group of compressors adapts its operation to the specific demand of each moment, saving energy and prolonging the life of the plant

  • Mechanical subcooler exchanger, connected to an auxiliary unit that cools the discharge of the transcritical fluid, reducing steam and increasing the efficiency of the system

  • Stainless steel in 100% of the pipes

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