Air coolers / Evaporators
Extra flat air cooler for gentle cooling and demanding processes
KBKT
HFC | CO2 | Water | Brine
High power density with a range of 1-5 fans
80bar (PS) Operating pressure with CO2
High-efficiency, high-performance EC fans for energy-efficient operation
8 rows of pipes in depth for minimum dehumidification
Reduced unit height for optimum room utilization and air circulation
Due to its particularly flat design, coupled with its large heat exchanger surface with 8 rows of tubes in the direction of the air, the KBKT high-performance air cooler is particularly suitable for gentle air conditioning of sensitive refrigerated goods, e.g. baked goods, dough pieces and fermentation interruptions.
The KBKT is used in these areas of application
Refrigeration in the food industry
Especially high demands are placed on refrigeration in the food industry. Hygiene, energy efficiency and reliability are the top priorities. But even when it comes to requirements for refrigerants, corrosion protection, material combinations, practical fin spacing, optimised tube and fin geometries, uniform air distribution or energy efficiency, Roller offers the optimised solution for every performance range and every application with its wide product range of evaporators and air coolers.
Storage & Logistics
The requirements for cooling in warehouse logistics could not be more diverse. The tasks are very specific: In plus cold stores for fruit and vegetables, it is crucial that the sensitive chilled goods are stored in the right conditions and cooled gently.
Dairy products are highly perishable and require a closed cold chain. Ripening chambers turn fruit varieties into products ready for sale. In deep-freeze warehouses, uniform temperature distribution is important, reliable air coolers protect against thawing of the goods. In order-picking rooms, the impact on employees must be minimised.
Roller offers a variety of individual solutions for all applications.
Controlled fermentation delay or interruption
Proper rising of the dough is critical to the quality of the baked goods. To achieve the best results at the desired time, a controlled proofing delay or interruption is necessary, which is created by the controlled ambient temperature and moisture content.
The large heat exchanger surface of the KBK ensures gentle cooling of the dough pieces.
Commercial refrigeration
The range of refrigeration technology for the retail trade is broad. Whether it's a butcher's shop, bakery, flower shop, petrol station, restaurant or supermarket - each sector has its own requirements to ensure optimum product quality.
One thing is always in the foreground: reliability in refrigeration technology when it comes to failure safety, hygiene or energy efficiency. Roller is the specialist for air coolers, evaporators and heat exchangers for the commercial sector.
Process cooling
The manufacturing industry depends on the reliable maintenance of specific temperatures to ensure high quality of the goods produced. Precise temperature control, reliability and energy efficiency are a priority.
Roller offers a wide range of heat exchangers and air coolers for process cooling.
Talk to us.
- Refrigeration in the food industry
- Storage & Logistics
- Controlled fermentation delay or interruption
- Commercial refrigeration
- Process cooling
Minimum dehumidification
The cooling of sensitive goods requires special challenges for the air coolers. To preserve the best possible quality of the food, the smallest possible temperature differences and low dehumidification are required. To ensure this, an air cooler needs a large evaporator surface.
The KBKT was designed to meet precisely these requirements and impresses with very low dehumidification levels.
Climate heating for optimal humidity control
Minimal temperature differences are an equally important aspect for guaranteed consistently high product quality.
When air is cooled by an air cooler, the humidity condenses on the cold fins of the air cooler. This is discharged via the condensate drain. The dehumidified air can then be reheated by the air-conditioning heater to keep the temperature difference low. This makes it possible to dehumidify and keep the temperature in the room at a defined temperature operating point.
Hygiene standards based on the HACCP concept
Hygiene plays a particularly important role in the food industry. That is why we base the design features of our air coolers on the HACCP concept during development and offer maximum serviceability for easy cleaning.
Smooth surfaces, rounded corners and removable drip trays and side covers provide easy access and enable hygienic operation. Additional configurable options such as swivel fans and the repair/service switch make cleaning work even more efficient.
Product benefits
Your advantages at KBKT
Large heat exchanger surface
Aligned tube system with large surface area, up to 8 rows of tubes in air direction for gentle cooling
External junction box
Fans and heaters wired to external junction box in new type sizes
CO2 applications up to 80bar operating pressure
An optimized heat exchanger system for evaporators with an operating pressure of PS 80 bar is available for the use of CO2.
Swivelling fans
for better access allow more thorough cleaning of the heat exchanger (optional)
Features
All product advantages at a glance
General
- Cooling capacity from 1 to 18 kW
- Temperature range: -25 – +40 °C
- Fin spacing 4.5 / 7 mm
- Defrosting: electric, optional: Brine
- Operating pressure up to 25 bar/ 80 bar with CO2
Easy assembly
- Large spaces on the side of the housing allow easy installation of pipes and valves
- Easy access via side doors, completely removable
- Flat stainless steel hanging rails
- Connections with threaded nipple, ventilation and drain valve (water or brine mode)
- Drain heating can easily be retrofitted
- Fan and heating rods wired to terminal box
- Defrost heating for coil anf AC-heater can easily be retrofitted, MS heating rods
- Drip tray with horizontal drain at front or rear (optional)
Inspection and cleaning
- Double drip pan construction prevents condensation forming on the underside of the tray
- Side doors can easily be removed
- Large dimension condensate drains
- Aligned tube pattern and fin spacings for easy cleaning
- Design features based on the HACCP concept
- Thick fins (0.3 mm) for extra stability during cleaning
Fans
- Powerful EC fans as standard
- Fans swivel for easy cleaning (optional)
- Fan speed/air volume adjustable depending on load
- ErP compliant fans
Energy efficiency
- Optimized, aligned tube system with smooth fins ensures low pressure losses on the air side and high air flow
- EC fans for energy-efficient operation as standard
- Large heat exchanger surfaces for reduced dehumidification and reduction of defrosting
- Adjustment of the air volume flow according to the cooling load via external controller (0 - 10 V)
- Air cooler energy efficiency class A+
- Heating rods arranged in aluminium housing to prevent vapours
Corrosion protection
- Corrosion-resistant aluminium housing with scratchproof powder coating
- Edge enclosing powder coating
- Resistant corrosion protection for the evaporator block
- Corrosion protection variant O/P (option) - all details here
Defrosting
- Large heat exchanger surfaces dehumidify the air less and thus require fewer defrost cycles
- Heating rods arrangement for best possible heat distribution and reliable defrosting, inserted in aluminum jacket tubes to avoid steam vapor
- Defrost safety thermostat interrupts electric defrosting if the defrost control system (accessory) malfunctions
- Frame heating for electrically heating the fan ring and to avoid ice bridges during defrosting (accessory)
- Defrosting using brine circuit
- Baffle plate to prevent condensation on the housing
- Heated drip tray
- Heating elements made of stainless steel jacket tube with special vulcanization
Heated drip tray
to easily drain away condensation in low-temperature storage rooms
EVD-ice:
Electronic e-valve and superheat controller for efficient, safe operation and quick commissioning
Corrosion protection
various types of heat exchanger corrosion protection for use in aggressive environments
Swivelling fans
for better access allow more thorough cleaning of the heat exchanger (optional)
References
Bakery cooling - FHV - Biaggini
For the daily fresh baked goods in the bakery displays, sophisticated refrigeration technology is required in particular to meet the requirements of the variety of different baked goods. Fast freezing times, small temperature differences, air distribution and humidity control during storage add complexity to the task. For careful conditioning of sensitive bakery goods, the focus of evaporators is on the largest possible heat exchanger surface area with low dehumidification. For the conversion of one of the largest bakeries in Switzerland, Biaggini installed a CO2 refrigeration system with 250 kW cooling capacity, including heat recovery, air conditioning, and humidity control in the cold rooms. Biaggini relies on the reliable technology of Roller FHV air coolers when it comes to cooling the refrigeration and deep-freeze chambers.
| Application | Commercial Refigeration |
|---|---|
| Address | Swiss |
| Fluid | CO2 |
| Product | FHV |
Technical data
All important technical data
| Product name | KBKT EC |
|---|---|
| Capacity range | 1 - 18 kW |
| Temperature range | -25 to 40 ̊C |
| Defrost heater | Block and drip tray |
| Tubes | Internally grooved |
| Tube system | alined |
| Number of fans | 1 - 5 Stk. |
| Fan type | EC / suction / IP 54 |
| Fan size | 300 mm |
| Fin spacing | 4,5 / 7 mm |
| Energy efficiency class | A to C |
How can we help you?
We consult you competently and comprehensively!
Make a concrete enquiry now!
Tel.: +49 (0) 7156 / 2001-30
markus.mank@walterroller.de
