Co2 systems - Import export

CO2 Cascade units are perfectly suited for high temperature climate. This system consists of two refrigeration systems connected via heat exchanger, where one evaporates, the other condenses. Such combination provides either low temperature refrigeration or both: low and medium temperature refrigeration with different refrigerants. Low temperature units can be designed with CO2 and a flooded system to ensure better heat exchange, while medium temperature units obtain a truly cost-effective and environmentally friendly solution when produced with HFC and HC refrigerants. At high ambient temperatures, conventional refrigeration systems require a large amount of energy, whilst propane works perfectly in such conditions. GREEN SOLUTIONS | This unit is a part of Refra‘s environmentally friendly product group, as it is made using natural refrigerants. Such low GWP solutions are designed to have better efficiencies and capacities, as well as less environmental damage.

LT Liquid cooled systems are designed to supplement the existing refrigeration arrangement with an already installed chiller. This unit can be cooled by glycol provided from a currently existing chiller and provide additional low temperature cooling. It is perfect for achieving particularly low refrigeration temperatures that can go down to -35 °C degrees. Such solutions are mostly used for warehouse cooling and other industrial applications. GREEN SOLUTIONS | This unit is a part of Refra‘s environmentally friendly product group, as it is made using natural refrigerants. Such low GWP solutions are designed to have better efficiencies and capacities, as well as less environmental damage.

CO2 Container is a new generation solution that covers most refrigeration needs. It combines both transcritical and subcritical CO2 systems with a unique AR frame, designed exclusively by Refra. Cooling capacity of this product ranges from 50 kW to 600 kW, meaning that it can be designed for various applications. The special design of the walk-in container is ideal for buildings where indoor installation is not possible. It can be placed right next to the building or on the roof, which will not only reduce installation costs, but will also allow easy unit maintenance. For maximum safety, the container is equipped with a special leak detector that responds to gas leaks quickly and lets prevent malfunctions. Additional options, such as illumination, ventilation and cooling can be installed inside the container to make the service of the unit even more convenient.

CO2 Industrial is a customizable transcritical rack, designed mainly for industrial application. Special “reach-in” container option for outdoor installation provides convenient and efficient unit service. This type can be assembled with maximum of 6 reciprocating compressors per stage (MT/LT) and provide cooling capacity ranging from 50 kW to 500 kW. This model is assembled with 6-cylinder compressors, resulting in bigger dimensions and larger power supply. GREEN SOLUTIONS | This unit is a part of Refra‘s environmentally friendly product group, as it is made using CO2 refrigerant. Such low GWP solutions are designed to have better efficiencies and capacities, as well as less environmental damage.

CO2 Select is a customizable transcritical rack, designed for commercial and industrial applications. It is built on a rigid frame, designed for easy maintenance and durability. A special “reach-in” container option for outdoor installation provides convenient installation and efficient unit service. The cooling capacity of this product ranges from 50 kW to 330 kW, meaning that it can be designed for various applications. GREEN SOLUTIONS | This unit is a part of Refra‘s environmentally friendly product group, as it is made using CO2 refrigerant. Such low GWP solutions are designed to have better efficiencies and capacities, as well as less environmental damage.

CO2 Ecopack is a customizable transcritical rack, designed mainly for commercial application. Built on a low and narrow frame, it is designed for small spaces and easy maintenance. This model can be assembled with maximum 4 MT and 3 LT reciprocating compressors and provide cooling capacity up to 135 kW. Due to its simple, small frame design, this unit is the optimal choice for installing a medium size refrigeration system. GREEN SOLUTIONS | This unit is a part of Refra‘s environmentally friendly product group, as it is made using CO2 refrigerant. Such low GWP solutions are designed to have better efficiencies and capacities, as well as less environmental damage.

The CO2 vertical rack is constructed as a single unit on a powder coated steel frame. Vertically build to reduce the footprint, this product has a sufficiently high power potential. This is the unit with the highest power capacity per square meter. Therefore it is ideal for the demands of small food retail stores. Vertical rack system is designed with a well-known refrigeration technologies that have been reliably tested. This frame can be assembled with maximum of 4 compressors and manufactured for medium and low temperature cooling, providing up to 75 kW of refrigeration capacity. GREEN SOLUTIONS | This unit is a part of Refra‘s environmentally friendly product group, as it is made using CO2 refrigerant. Such low GWP solutions are designed to have better efficiencies and capacities, as well as less environmental damage.

CO2 Light is perfectly suitable for small food retail stores or gas stations because of its small scale. It can provide up to 50 kW of cooling capacity, split between medium temperature and low temperature refrigeration. These rack systems are designed with reliable refrigeration technologies that are well tested and proven in the market. Assembled with maximum of 3 compressors on a welded frame, made of powder coated steel. GREEN SOLUTIONS | This unit is a part of Refra‘s environmentally friendly product group, as it is made using CO2 refrigerant. Such low GWP solutions are designed to have better efficiencies and capacities, as well as less environmental damage.

CO2 Compact systems are designed for small retail shops and can be manufactured for medium temperature cooling. Based on Carel HECU system for complete management of condensing units fitted with BLDC compressors, these products can be adjusted remotely. The serial connection between the condensing unit and the evaporators controlled by MPXPRO represents one of the main features of this solution, contributing to the energy efficiency and reliability of the entire system. The built-in plug and play interface provides the ability to install and set up the unit extremely quickly and easily. GREEN SOLUTIONS | This unit is a part of Refra‘s environmentally friendly product group, as it is made using CO2 refrigerant. Such low GWP solutions are designed to have better efficiencies and capacities, as well as less environmental damage.

Wide capacity range EMC series evaporators are the most popular option when choosing evaporator for applications in various supermarkets, cold rooms, warehouses and other premises. They are easy to instal, as well as easy to maintain and clean. Assembled with high quality copper tubes with working pressure up to 32 bars, aluminum fins, AC/EC fans and electric heating elements for defrosting. Fin spacing varies between 3,5 mm and 9,9 mm at Te from +10 ºC to -40 ºC. These evaporators can also be designed for CO2 systems up to 80 bars on request.

Refra heat exchangers for gas coolers are made of special K65 copper tubes for high pressures which go up to 120 bar. Such coils are perfect for CO2 systems as they are capable of maintaining the pressure these systems need. Standard units are designed using corrugated fin shape and can be made with aluminum, galvanized or stainless steel frame with Aqua-Aero anti corrosion protection. These products are usually selected and manufactured exclusively according to the customer’s wishes.

Wide capacity range gas cooler series, created for small or large transcritical CO2 systems with high pressure. This product is perfect for green and climate-friendly solutions and is suitable for commercial or industrial buildings with medium power demand. Available heat capacity is up to 1 MW upon nominal conditions (when Tin is 115°C, Tout is 33°C and Tamb is 35°C and pressure is 91,7 bar). V shaped construction, assembled with inner 7,94 x 0,54 mm grooved copper tubes, aluminum or copper fins and EC fan motor technology. The galvanized steel and powder coated frame can be designed in various sizes.

EMA series evaporators are designed with an extra slim aluminum frame, making it an ideal option for small premises. This compact small capacity evaporator saves space and can be installed in narrow niches. Assembled with high quality copper tubes with working pressure up to 32 bars, aluminum fins, AC/EC fans and electric heating elements for defrosting, this product is ideal for commercial applications in various supermarkets, cold rooms, warehouses and more. Fin spacing varies between 3,5 mm and 9,9 mm at Te from +10 ºC to -40 ºC. These evaporators can also be designed for CO2 systems up to 80 bars on request.

EMT series evaporators are designed with two horizontally arranged coils, which make the frame flat and perfect for large rooms with low ceilings. The evaporator’s ability to simultaneously pull and blow air is perfect for large open spaces that require even air distribution. Assembled with high quality copper tubes with working pressure up to 32 bars, aluminum fins, AC/EC fans and electric heating elements for defrosting, this product is ideal for commercial applications in various supermarkets, cold rooms, warehouses and more. Fin spacing varies between 3,5 mm and 9,9 mm at Te from +10 ºC to -40 ºC. These evaporators can also be designed for CO2 systems up to 80 bars on request.

Refra heat exchangers for evaporators are made of aluminum or copper fins and convert the system’s refrigerant liquid to gas. Usually they are used to cool and sometimes dehumidify air. Refra evaporator coils are made using inner grooved or smooth copper tubes, which range from 7 mm to 12,7 mm in diameter. The operating tube pressure reaches 80 or even 120 bar, making evaporator coils perfectly suitable for CO2 systems. The frame can be made using aluminum, galvanized or stainless steel and can be coated with a special Aqua-Aero anti corrosion protection. Heat exchangers can be manufactured up to 50 kW capacity for both low and medium temperatures.

Wide capacity range gas cooler series, created for small and medium transcritical CO2 systems with high pressure. Due to its lightweight construction and practical weight distribution this product can be installed even on medium-strength rooftops. This product is perfect for green and climate-friendly solutions and suitable for commercial or industrial buildings. Available heat capacity is up to 500 kW upon nominal conditions (when Tin is 115°C, Tout is 33°C and Tamb is 35°C and pressure is 91,7 bar). Flat shaped simple construction, assembled with inner 7,94 x 0,54 mm copper tubes, aluminum or copper fins and EC fan motor technology. The galvanized steel and powder coated frame can be designed in flat or vertical way.

Large capacity range gas cooler series, created for large transcritical CO2 systems with high pressure. Double heat exchanger and double fan row provide large heat capacity within limited placement area, making it perfect for saving space while still maintaining high power. This product is perfect for green and climate-friendly solutions and suitable for commercial or industrial buildings with high power demand. Available heat capacity ranges over 1 MW upon nominal conditions (when Tin is 115°C, Tout is 33°C and Tamb is 35°C and pressure is 91,7 bar). W shaped large construction, assembled with inner 7,94 x 0,54 mm grooved copper tubes, aluminum or copper fins and EC fan motor technology. The clever frame design also allows for the installation of additional equipment under the gas cooler.