RDSD – RDLD flat liquid coolers

Maximum power dissipation, even in critical spaces.

Double row of fans for high-capacity cooling systems

When systems reach high power levels and the layout leaves little operating margin, traditional coolers can become an additional problem to solve. Excessive noise, oversized dimensions or inefficiencies in thermal cycles become concrete obstacles during installation or operation, compromising the performance of the entire system.

To meet these needs, Refteco has engineered the RDSD – RDLD double row flat liquid coolers: a range developed for plants requiring operational continuity and high heat rejection. The RDSD (short frame) version ensure maximum installation compactness, while the RDLD (long frame) allows for reduced noise levels and a larger heat exchange surface. The result: high performance even under demanding thermal conditions, with over 280 configurations available.

Application area

Power plants
Air conditioning

Process cooling

Advantages of RDSD – RDLD flat liquid coolers

Higher power density, thanks to the double fan row and 12 mm tubes with reduced pressure drops.
Operational continuity even in the event of fan failure, thanks to internal module separation that prevents air recirculation between adjacent sections.
Optimized installation utilizing the RDSD for compact layouts and the RDLD for higher thermal efficiency and lower noise.
Enhanced durability and resistance, featuring a RAL 9002 powder-coated galvanized steel casing and AISI 304 stainless steel hardware.
Low noise emissions, starting from 30 dB(A) at 10 m, with statically and dynamically balanced AC/EC fans,
Easy connection: equipped with flanged manifolds on the same side to reduce installation costs.

Technical specifications and models

Capacity: from 62 to 1270 kW (EN 1048)
Fans:
- RDSD: from 4 to 14 units
- RDLD: from 4 to 12 units
Fan diameter: 800 / 910 mm
Fins spacing: 2,1/2,3/2,5/3,0/4,0/4,5 mm
Fluids: water, glycol, non-freezing fluids
Heat exchanger: copper pipe Ø12 mm and aluminum fins
Connections: flange PN16 (EN 1092)
PS/TS: 16 bar / -40 ÷ +120 °C
Installation: horizontal or vertical
Available configurations: over 286 models

Options and customization

AISI 304 or 316L stainless steel tubes
Fins in copper, stainless steel, epoxy-coated or flat aluminum
Protective coil treatments
Special paints finishes or full stainless steel casing
EC, ATEX or high-pressure fans
Adiabatic system “Spray System”
Regulators, isolator switches and fan wiring
Vertical airflow kit and anti-vibration mounts

Warranty and compliance

Warranty: 24 months
According to:
- PED 2014/68/EU
- Machinery Directive 2006/42/EC
- Low Voltage Directive 2014/35/EU
- Directive 2014/30/EU Electromagnetic Compatibility

Data sheet

Dry cooler for air conditionig in Sweden

Vänersborg

For this air-conditioning project related to a part of the Vänersborg Community office, regional capital of Västra Götaland, we supplied a liquid cooler with low noise level, suitable to be installed in a residential area.

Liquid cooler and radiator for refinery

Płock

For this project relative to cooling of process fluids in refinery PKN ORLEN, we have supplied a liquid cooler and a radiator, both complete of fans speed controller voltage regulator, electric switchboard and casing powder painted C4 class.