RKDS – RKDL Double-Row Table-Type Gas Coolers

Maximum heat dissipation capacity in large-scale CO2 systems.

The solution engineered for stability, continuity, and quiet operation even under the most critical conditions

When CO2 systems scale up in capacity and the thermal load fluctuates rapidly throughout the day, many gas coolers begin to reveal their limitations: airflow rates become insufficient, head pressure spikes beyond design parameters, and thermal efficiency drops as soon as a single fan slows down or shuts off. Even a minor disruption in airflow can compromise the entire operational balance, particularly in installations where the heat transfer surface area is already operating at its limit.

Under these conditions, systems become highly sensitive to elevated ambient temperatures, high-pressure alarms multiply, and compressor power consumption spikes, causing an immediate negative impact on overall efficiency and operating costs.

The RKDS-RKDL series is engineered to deliver a more robust response in these specific scenarios: designed to handle high thermal loads, maintain head pressure stability during peak hours, and guarantee operational continuity where alternative solutions begin to lose efficiency.

Application Sectors

Food & Beverage
Grocery Retail

Advantages of Double-Row Table-Type Gas Coolers

Enhanced stability under severe ambient conditions: Achieved thanks to the large heat transfer surface area and diam. 910 mm external rotor fans that deliver high volumetric airflow rates.
Operational continuity during partial fan shutdowns: Made possible by internal separator baffles between the fan sections, which prevent air recirculation (bypass) and preserve heat transfer effectiveness.
Superior long-term heat exchanger reliability: Guaranteed by inner-grooved K65 copper tubes and a dedicated tube suspension system that eliminates direct contact between the coil core and the casing frame, mitigating vibrations, thermal expansion stress, and the risk of micro-leaks.
Natural noise reduction: Thanks to aerodynamic fan shrouds and large fan diameters, allowing operation at lower rotation speeds while fully maintaining the airflow required for heat exchange.
Improved aerodynamic efficiency: Driven by the table-type configuration and optimized coil design, which ensure a uniform airflow distribution across the entire heat exchanger, maximizing heat dissipation capacity.
Extensive system adaptability: Offering over 336 models, including RKDS compact versions or RKDL high-efficiency versions, with support for both horizontal and vertical installation to meet diverse space constraints and capacity requirements.

Technical Specifications and Models

Heat dissipation capacity : 95 – 860 kW
Fans: 4–14 units, diameter 800 / 910 mm, AC or EC, IP54, class F
Fin spacing: 2,1/2,3/2,5/3,2/4,0 mm
Refrigerant fluid: transcritical CO₂
Operating Pressures / Temperatures: PS 120 bar | TS –40 / +140 °C
Available configurations: over 336 models
Installation: horizontal or vertical

Options and Customization

AISI 304 / 316L stainless steel casing
Stainless steel tubes and fins
Copper fins or pre-painted aluminum fins
High efficiency EC fans
ATEX versions
Fan speed controllers
Anti-vibration mounts
Coil protective coating
Fan isolation switches (disconnectors)
AC/EC fan wiring
Coil air intake filter
Special paints and anti-corrosion protections

Warranty and Compliance

Warranty: 24 months from date of shipment
Compliant with :
- PED 2014/68/EU
- Machinery Directive 2006/42/EC
- Directive 2014/35/EU (Low Voltage)
- Directive 2014/30/EU (Electromagnetic Compatibility)