CO2 GAS COOLER

CO2 GAS COOLER

GK water gas cooler are a family of heat exchangers designed for CO₂ applications and can be used as gas coolers in transcritical systems, heat recovery heat exchangers or condensers in subcritical systems. The primary medium (CO₂) flows on the tube side, thanks to the high design pressure, while the secondary medium (water or anti-freeze mixtures) runs on the shell side. The countercurrent flow design between the primary and the secondary medium ensures that reduced thermal approaches between the two fluids are possible, thus enhancing the performance of these heat exchangers in both transcritical (gas cooler or heat recovery) or subcritical (condenser) modes.

Refrigerants

Optimized for CO₂ transcritical and subcritical operation

Capacity range

Gas cooler capacity 30 – 1200 kW

Certifications

CE (PED 2014/68/EU)
Marine approvals (DNV, LR, etc.) on request

Applications

Main gas cooler in a CO₂ transcritical system
Heat recovery heat exchanger
Condenser in a CO₂ subcritical system

Industry sectors

Commercial refrigeration
Light industrial refrigeration
Heat pumps

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WIDE CAPACITY AND APPLICATION RANGES
GK water gas coolers can operate in a particularly wide range of capacities (from 30 to 1200 kW as gas coolers), thus fulfilling the needs of specific CO2 systems or of complete families of racks, chillers or heat pumps.

A FAMILY OF FLEXIBLE SOLUTIONS
Every CO2 cooling and heating system has its own operational characteristics. For this reason, the GK series of water gas coolers, beside a number of standard models, can offer a close-to-infinite range of tailor-made solutions thanks to the combination of:

7 different shell diameters
14 different standard lengths and countless on-demand lengths
Many options of baffle arrangement on the secondary medium side

Thanks to this design flexibility, almost any requirement in terms of efficiency, pressure drop or overall dimensions can be fulfilled.

HIGH PRESSURE APPLICATION? NO PROBLEM
The high design pressure standards on CO2 and the water side – on the other hand – allow perfect integration in virtually all cooling and heating systems, also considering the need to operate in climates determining a high refrigerant operating pressures or the need to produce hot water.

ONE HEAT EXCHANGER, THREE FUNCTIONS
The water gas coolers from the GK series are heat exchangers dedicated to CO2 applications which can be used in three different functions:

As a main water gas cooler in a transcritical application
As a heat recovery exchanger for the production of hot water in combination with an air gas cooler
As a condenser in subcritical operation

NO NEED FOR MANY HEAT EXCHANGERS IN PARALLEL
Different to plate heat exchangers, GK water gas cooler can achieve an extremely wide range of capacities, ensuring the possibility to go beyond 1000 kW with only one cooler, thus avoiding the system complication of having two or three coolers installed in parallel:

No need for connecting piping and additional components
Simplified maintenance operations

THE ROBUST ANSWER TO DEMANDING APPLICATIONS
Are you afraid of leakages caused during the life of the gas cooler by the challenging pressure and thermal fatigue conditions of CO2 transcritical systems? Due to the robust component sizing and to the heavy-duty construction, GK water gas coolers represent a warranty against mechanical risks, offering a stress resistance not comparable with other heat exchanger types available in the industry.

Standard or customisable supports
CO2 side nozzles in carbon steel or stainless steel
Water side connections: flange (EN 1092-1/01/A PN16) or flexible joint (Victaulic)

Features
WIDE CAPACITY AND APPLICATION RANGES
GK water gas coolers can operate in a particularly wide range of capacities (from 30 to 1200 kW as gas coolers), thus fulfilling the needs of specific CO2 systems or of complete families of racks, chillers or heat pumps.

A FAMILY OF FLEXIBLE SOLUTIONS
Every CO2 cooling and heating system has its own operational characteristics. For this reason, the GK series of water gas coolers, beside a number of standard models, can offer a close-to-infinite range of tailor-made solutions thanks to the combination of:
- 7 different shell diameters
- 14 different standard lengths and countless on-demand lengths
- Many options of baffle arrangement on the secondary medium side
Thanks to this design flexibility, almost any requirement in terms of efficiency, pressure drop or overall dimensions can be fulfilled.
Benefits
HIGH PRESSURE APPLICATION? NO PROBLEM
The high design pressure standards on CO2 and the water side – on the other hand – allow perfect integration in virtually all cooling and heating systems, also considering the need to operate in climates determining a high refrigerant operating pressures or the need to produce hot water.

ONE HEAT EXCHANGER, THREE FUNCTIONS
The water gas coolers from the GK series are heat exchangers dedicated to CO2 applications which can be used in three different functions:
- As a main water gas cooler in a transcritical application
- As a heat recovery exchanger for the production of hot water in combination with an air gas cooler
- As a condenser in subcritical operation
NO NEED FOR MANY HEAT EXCHANGERS IN PARALLEL
Different to plate heat exchangers, GK water gas cooler can achieve an extremely wide range of capacities, ensuring the possibility to go beyond 1000 kW with only one cooler, thus avoiding the system complication of having two or three coolers installed in parallel:
- No need for connecting piping and additional components
- Simplified maintenance operations
THE ROBUST ANSWER TO DEMANDING APPLICATIONS
Are you afraid of leakages caused during the life of the gas cooler by the challenging pressure and thermal fatigue conditions of CO2 transcritical systems? Due to the robust component sizing and to the heavy-duty construction, GK water gas coolers represent a warranty against mechanical risks, offering a stress resistance not comparable with other heat exchanger types available in the industry.
Accessories
- Standard or customisable supports
- CO2 side nozzles in carbon steel or stainless steel
- Water side connections: flange (EN 1092-1/01/A PN16) or flexible joint (Victaulic)

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CO2 GAS COOLER

CO2 GAS COOLER