RN industrial cubic air evaporators

Engineering power for reliable and high-performance industrial cold rooms.

The industrial solution for high-performance cooling and storage

Any temperature fluctuation or interruption in refrigeration within industrial cold rooms used to store fresh, frozen or perishable products can cause significant economic damage. Uneven temperatures, uncontrolled humidity, ineffective defrosting or undersized evaporators compromise product quality, operational efficiency and food safety.

To address these critical issues, Refteco has developed the RN industrial cubic air evaporators, specifically designed to handle severe thermal loads, continuous cycles and harsh environments. The RN series combines reliability, energy efficiency, optimized heat exchange with one of the most extensive levels of system flexibility on the European market.

Application area

Food & Beverage
Distribution platforms
Air conditioning

Advantages of RN Air Evaporators

Maximum heat exchange provided by coils with Ø12–16 mm copper tubes (or stainless steel for NH₃) and high-thickness fins. This ensures high thermal transfer, faster pull-down times and stable cold room temperatures even under variable loads.
Long-term reliability and operational continuity, thanks to a tube suspension system that eliminates contact with the frame. This reduces vibrations and mechanical stress, minimizing the risk of micro-leaks or plant downtime, and extending the life of the coil, even during intensive cycles.
Guaranteed energy efficiency and product quality featuring AC/EC external rotor fans (Ø500–560-630-710-800-910 mm) and optimised shrouds. These ensure uniform airflow, proper dehumidification and fewer defrost cycles, better preserving product weight and freshness.
Maximum design versatility with over 1800 available configurations and full compatibility with HFCs, HFOs, CO₂ and NH₃. RN systems adapt to any plant, support sustainable strategies and offer future-proof solutions regarding F-Gas regulations.
Robustness, easy maintenance and operational comfort, featuring RAL 9002 powder- coated galvanized steel casing, AISI 304 stainless steel screws, and welded stainless steel drain outlets. Easy fan access and quiet motors ensure durability, simplified servicing and operating comfort. Designed to operate from -40°C to +20°C, covering everything from deep freezing to delicate preservation.

Technical specifications and models

Cooling capacity: from 15 to 280 kW
Fans: 1 to 5 fans, diameters 500 / 560 / 630 / 710 / 800 / 910 mm
Refrigerant type: HFC – HFO – CO₂ – NH₃
Operating pressures:
- HFC: 30 bar
- CO₂: 33/45/60 bar
- NH₃: 23 bar
Operating thermal range: -40 °C / +20 °C
Coil geometries:
- RNS – triangular layout for maximum specific power
- RNL – square layout for reduced dehumidification
Fin pitch: 4/6/7/8/10/12 mm
Materials:
- Tube: Copper / Stainless steel AISI 304 (NH₃)
- Fins: Aluminum / stainless steel / AlMg
- Casing: Powder coated galvanized steel
Available fans: AC / EC, IP54 protection

Options and customization

High-efficiency EC fans
ATEX fans
Stainless steel tubes, fins, casing and grids
Fins in AlMg or epoxy-coated aluminium
Protective coil treatments
Defrost options: electric, light electric, hot gas, water, hot glycol or combined
Insulated drip tray
Electric heaters for drain outlet and fan shrouds
Collar for textile ducts
Shut-up, air streamers, and air throw cowls
Support legs for floor installation
Inlet hoods
Fan wiring and isolator switches
Post-heating coil

Warranty and compliance

Product Warranty: 24 months
Regulations complied with:
- PED 2014/68/EU
- Machinery Directive 2006/42/EC
- Low Voltage Directive 2014/35/EU
- EMC Directive 2014/30/EU

Data sheet

Logistic and production center

TALLINN

This project is relating to one of the largest retailers in the Baltic States. We have supplied some CO2 evaporators for dry expansion transcritical plant. The installation foresees positive and negative cold rooms for for preservation of fresh and frozen foods.

Distribution center

NOGAROLE ROCCA

For this project, we have supplied some CO2 evaporators for pump transcritical plant for positive temperature for preservation of fresh foods at +2 °C.

Cold rooms for storage of kiwifruits and plums

CISTERNA DI LATINA

For this important company that produces, preserves and processes green, yellow and red kiwifruit and plums, an expansion was realised with the construction of new cold rooms for the storage of kiwifruits and plums.