Shock freezer air evaporators REBFT – RBBFT – RABFT

Targeted power for rapid chilling on trolleys and freezing tunnels.

The professional solution for fast, uniform and reliable cooling

In cold rooms dedicated to shock freezing and in facilities where meat, fish, ice cream, and ready meals enter still warm after processing, the system must be capable of removing heat quickly and evenly. In these environments, cooling capacity alone is not enough: the way air is distributed determines the overall quality of the process.

When ventilation fails to reach every level of the trolleys or the airflow is insufficient to counter the initial thermal load, cycles lengthen, frost builds up and energy consumption rises. Maintenance can also become more costly if access is not immediate or if panels are difficult to remove.

To ensure fast and sustainable processes, Refteco has developed the REBFT-RBBFT-RABFT shock freezer series, offering rapid and controlled cooling even in high-intensity applications. High-pressure fans, heat exchangers optimized for extreme temperature variations and a structure designed for fast installation and inspections ensure repeatable processes while preserving product quality and operational continuity.

Application areas

Food & Beverage
Meat and fish industry
Baked goods, ice cream and ready meals
Rapid freezing cold rooms and tunnels

Advantages of shock freezer air evaporators REBFT – RBBFT – RABFT

Rapid and uniform cooling, thanks to the high pressure axial fans (Ø630 mm) that provide sufficient static pressure and a constant airflow for faster cycles and uniform freezing, even with multi-tier trolleys.
High efficiency heat exchange, with dedicated coils for each refrigerant: Ø12 mm internally grooved copper tubes (REBFT-RBBFT) or Ø16 mm AISI 304 stainless steel (RABFTfor NH₃), combined with widely spaced fins for maximum cooling capacity and better frost management during intensive cycles.
Long-term reliability, guaranteed by the tube suspension system that eliminates direct contact with the frame, resulting in lower vibrations, reduced risk of micro-leaks and longer coil life under severe thermal shock conditions.
Consistent performance and energy efficiency, with AC/EC fans featuring thermal protection and EN ISO 13857 certified grids, compliant with the ErP directives for reduced consumption and stable operation.
Robust structure and simplified maintenance, featuring a RAL 9002 powder-coated galvanized steel casing , AISI 304 stainless steel screws, welded stainless steel drip tray with a drain outlet. Adjustable feet and removable panels ensure quick accessibility and reduced downtimes.
Total refrigerant flexibility, with versions for HFC/HFO (REBFT), CO₂ (RBBFT) and NH₃ (RABFT) compatible with new or retrofitted systems and traditional or natural cooling strategies.

Technical specifications and models

Cooling capacity: 32 – 145 kW (SC2)
Fans: 1 – 5 axial fans
Fan diameter: 630 mm
Fin step: 4/6/8/10/12 mm
Compatible refrigerants:
- HFC/HFO (REBFT – direct expansion)
- CO₂ (RBBFT– direct expansion)
- NH₃ (RABFT– pump)
Operating Pressures / Temperatures:
- HFC/HFO: PS 30 bar | TS –40 / +120 °C
- CO₂: PS 33 / 45 / 60 bar | TS –45 / +120 °C
- NH₃: PS 23 bar | TS –40 / +120 °C
Operating thermal range: –40°C / +20 °C
Available models: 90 configurations (see size table)

Options and customization

Fin spacing 4/6/8/10/12 mm
AISI 304 / 316L stainless steel tubes
Stainless steel fan grids
Fins in stainless steel, epoxy coated aluminum or alloy AlMg
Protective coil treatment
Insulated drip tray
Defrost: electric, light electric, hot gas, hot glycol, water, combined
High efficiency EC fans
Special high-pressure fans
ATEX fans
Fan ring heaters and heater for drip tray outlet
Fan switches off
Wiring AC and EC fans
AISI 304 / 316L stainless steel casing

Warranty and compliance

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

Data sheet

Unit coolers and condensers for freezing tunnels

Canary Islands

For this project, we supplied three evaporators to be installed in as many freezing tunnels, a monoflow unit for a low temperature storage cell and condensers to be used with the individual refrigerator control units serving the four utilities.