Standard Configurations

 

 

15 years of CO2 experience
STANDARD CONFIGURATIONS

CAREL’s decade of experience in energy savings and CO2 systems is fully expressed in its line of refrigeration controllers. CAREL’s standard CO2 configurations have made the use of CO2 the new reference standard in retail.

CAREL’s decade of experience in energy savings and CO2 systems is fully expressed in its line of refrigeration controllers. CAREL’s standard CO2 configurations have made the use of CO2 the new reference standard in retail.

  • Use of natural refrigerant (CO2)
  • Standard and consolidated configuration 
  • Reduced energy consumption 
  • Control stability and excellent food preservation 
  • Easy installation and commissioning ensured by a fully totally integrated system

 

 

pRack Solutions for CO2

pRack solutions for CO2

CAREL’s solutions for compressor racks are suitable for both subcritical systems (pRack 300) and transcritical systems (pRack 300T).

The transcritical solution with dedicated algorithms (floating suction, floating condensing, heat recovery,…) increases system efficiency compared to a standard configuration.

The subcritical solution, in the cascade or pumped configuration, allows the use of CO2 without the critical high pressure issues.
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pRack solutions for CO2

CAREL’s solutions for compressor racks are suitable for both subcritical systems (pRack 300) and transcritical systems (pRack 300T).

The transcritical solution with dedicated algorithms (floating suction, floating condensing, heat recovery,…) increases system efficiency compared to a standard configuration.

The subcritical solution, in the cascade or pumped configuration, allows the use of CO2 without the critical high pressure issues.
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Transcritical booster pack

 

 

Transcritical booster pack

 

The use of an additional suction line, called intermediate or parallel, improves energy efficiency and makes this type of system particularly suitable for milder climates.

  • The new standard solution (consolidated and reliable)
  • Higher system efficiency at high gas cooler pressure and high outside temperature
  • Control based on receiver pressure
  • Synchronisation with RPRV
  • Heat Reclaim for energy saving

 

 

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The use of an additional suction line, called intermediate or parallel, improves energy efficiency and makes this type of system particularly suitable for milder climates.

  • The new standard solution (consolidated and reliable)
  • Higher system efficiency at high gas cooler pressure and high outside temperature
  • Control based on receiver pressure
  • Synchronisation with RPRV
  • Heat Reclaim for energy saving

 

 

read more

Cascade vs Pumped

Cascade CO2

Pumped CO2
  • Possibility to use a full natural refrigerant solution
  • System design similar to a traditional installation (R404)
  • Operating pressure comparable to standard systems (max 45 barg)
  • System more efficient than standard HFC and can be used in all climates
  • Possibility to use ammonia (NH3) or propane (R290), limited to the equipment room only
  • Suitable for large industrial installations
  • Completely green installation inside the store display area
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Cascade CO2
  • Possibility to use a full natural refrigerant solution
  • System design similar to a traditional installation (R404)
  • Operating pressure comparable to standard systems (max 45 barg)
  • System more efficient than standard HFC and can be used in all climates

 

Pumped CO2
  • Possibility to use ammonia (NH3), limited to the equipment room only
  • Suitable for large industrial installations
  • Completely green installation inside the store display area
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CO2 Compressor racks components

CO2 Compressor racks components

pRack 300T controller

  • Management of the transcritical cycle
  • Control of transcritical valves and up to 3 suction lines
  • Backup valve management
  • Intuitive user interface
  • Fast commissioning procedure

pRack 300 controller

  • Management of the CO2 subcritical cycle
  • Intuitive user interface
  • Fast commissioning procedure
  • Cascade and pumped configuration
  • DSS: Double System Synchronisation (to avoid peaks in power consumption)

Expansion board (for pRack 300T)

  • Easiest way to increase I/Os
  • Fast commissioning procedure
  • Reliable and economical solution

R744 electronic expansion valves

  • Continuous equal percentage modulation for a precise regulation of gas cooler and receiver pressure

chillBooster for evaporative cooling
[OPTIONAL]

  • Helps mitigate peak summer temperatures
  • Ideal for retrofits, increases the working life of condensers
  • Reduces the condenser capacity required for new installations, lowering the cost of heat exchangers

pRack 300 controller

  • Management of the CO2 subcritical cycle
  • Intuitive user interface
  • Fast commissioning procedure
  • Cascade and pumped configuration
  • DSS: Double System Synchronisation (to avoid peaks in power consumption)

pRack 300T controller

  • Management of the transcritical cycle
  • Control of transcritical valves and up to 3 suction lines
  • Backup valve management
  • Intuitive user interface
  • Fast commissioning procedure
 

Expansion board (for pRack 300T)

  • Easiest way to increase I/Os
  • Fast commissioning procedure
  • Reliable and economical solution
 

R744 electronic expansion valves

  • Continuous equal percentage modulation for a precise regulation of gas cooler and receiver pressure

chillBooster for evaporative cooling
[OPTIONAL]

  • Helps mitigate peak summer temperatures
  • Ideal for retrofits, increases the working life of condensers
  • Reduces the condenser capacity required for new installations, lowering the cost of heat exchangers

 

Standard Configurations connectivity

A centralised and integrated system

The integrated solution comprising pRack controller and boss supervisor, provides:

  • Control of the system using the supervisor via smartphone, tablet and PC
  • Constant performance monitoring and periodical reports for each unit
  • Benchmarks, dashboards and business intelligence tools within connected installations

The integrated solution comprising the pRack controller and the boss supervisor ensures:

  • Control of the system using the supervisor via smartphone, tablet and PC
  • Fast and autonomous synchronisation of all cabinet parameters so as to set the best energy saving configuration
  • Constant performance monitoring and periodical reports for each unit
  • Benchmarks, dashboards and business intelligence tools within connected installations

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