Refrigeration system - 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.

High capacity range dry cooler series, perfect for large industrial refrigeration systems. 4 heat exchangers and double fan row can provide especially large heat capacity within limited placement area, making it the unit with the highest power supply per square meter. Available heat capacity ranges over 1 MW under nominal conditions (when ETG is 35%, Tin is 45°C, Tout is 40°C and Tamb is 35°C). W shaped large construction, assembled with smooth copper tubes, aluminum or copper fins and AC/EC fan motor technology. The clever frame design also allows for the installation of additional equipment under the dry cooler.

Wide range capacity air cooled condenser series, perfectly suitable for small and large refrigeration and air conditioning systems used in commercial or industrial buildings with low to high power demand. Due to its lightweight construction and practical weight distribution this product can be installed even on medium-strength rooftops. Available heat capacity is up to 800 kW under nominal conditions (when Tcond is 45°C, Tamb is 30°C and R1234ZE. Flat shaped simple construction, assembled with inner grooved copper tubes, aluminum or copper fins and AC or EC fan motor technology. The galvanized steel and powder coated frame can be designed in flat or vertical way.

Extensive capacity range air cooled condenser series created for large refrigeration and air conditioning systems. Four heat exchangers and double fan row provide immense heat capacity within limited placement area, making it perfect for saving space while still maintaining high power. This type of unit is perfectly suitable for commercial and industrial buildings with high power demand. Available heat capacity is up to 1,6 mW under nominal conditions (when Tcond is 45°C, Tamb is 30°C and R1234ZE. W shaped large construction, assembled with inner grooved copzer tubes, aluminum or copper fins and AC or EC fan motor technology. Galvanized steel and powder coated frame can be designed in various sizes. The clever frame design also allows for the installation of additional equipment under the condenser.

Wide range capacity compressor packs with cooling capacity from 25 kW to 500 kW. Designed for commercial applications with a wide range of power demand. Reciprocating compressor packs are perfectly suitable for the cooling of large warehouse areas as well as other industrial buildings. The compressor pack can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Assembled on an open welded frame with bent profile, this compressor pack is ideal for small spaces due to its small size. Compressor pack also includes refrigerant filters, a receiver and a sight glass. Safety valve and pressure switches are added to increase the security of the unit.

Wide range capacity compressor packs with cooling capacity from 7 kW to 170 kW, designed for commercial applications. Scroll compressor packs are perfectly suitable for the cooling of shops, refrigeration chambers and general air conditioning systems. The compressor pack can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Assembled on an open welded frame with bent profile, this compressor pack is ideal for small spaces due to its small size. Compressor pack also includes refrigerant filters, a receiver and a sight glass. Safety valve and pressure switches are added to increase the security of the unit.

Small to medium capacity condensing units, designed for commercial and industrial applications such as food and beverage manufacturers, convenience stores, petrol forecourts and cold rooms. Assembled with reciprocating compressors the units provide a cooling capacity from 12kW to 55kW. These condensing units are an optimal choice for conventional refrigeration systems – affordable, small in size and easy to install. The units can be built outdoors, but additional shelter against rain or snow should be provided. Assembled with copper aluminium fin condenser, Bitzer or Copeland compressors with crankcase heater, high efficiency AC/EC axial fans and a liquid receiver. Built on an open welded galvanized steel frame with powder coating.

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.

Refra heat exchangers for liquid can be designed and manufactured to fully meet customer needs. Super flexible options allow Refra engineers to select the optimal circuit arrangement for required capacities, providing the best possible unit performance. The coils can be designed using various diameter smooth copper tubes which extends the power selection options. Assembled with aluminum or copper fins and aluminum, galvanized or stainless steel frame with Aqua-Aero anti corrosion protection. Coils are suited for small to high capacity commercial or industrial refrigeration systems.

Wide capacity range dry cooler series, created for small to large refrigeration systems with high power demand. Complete with a double heat exchanger and single/double fan row, this product is a super effective solution, which can provide large heat capacity while being installed in limited space area. For these reasons it is a popular choice for medium to large size commercial and industrial buildings. Available heat capacity is up to 550 kW under nominal conditions (when ETG is 35%, Tin is 45°C, Tout is 40°C and Tamb is 35°C). Capacities up to 1.2 mW can be achieved by ordering a modular DV type with more heat exchangers that are tilted to the side and reduced in length. V shape construction, assembled with smooth copper tubes, aluminum or copper fins and EC/AC fan motor technology. The galvanized steel and powder coated frame can be made in various sizes.

Refra manufactures liquid ice banks, designed for acumulation of capacity. Such units can be compatible with other refrigeration systems, if the hygienic standards of all units are ensured. The glycol used in the system is usually cooled by a separate chiller. Made with multiple stainless steel thermal coil batteries, built into a large water reservoir, these units work on the principle of ice formation. The glycol mixture circulating in the coil batteries forces the formation of ice on the pipes, thus cooling the water inside the tank. This technology is capable of cooling particularly large amounts of water with relatively little energy consumption.

Refra cold water tanks with an operating pressure of 6 to 10 bar are used to increase the amount of liquid in the refrigeration systems and can be produced as system component or a completely separate product. The water tank with possible 300-3000 liters capacity will help to keep a constant cooling cycle, thus stabilizing unit operation and avoiding poor water temperature control. Cold water tanks can also be used for water flow separation. A built-in separation plate or a blast pipe ensures smooth operation of the unit and maintains consistent water temperature in the system. This feature gives the opportunity to regulate the volume of liquid, used for different circuits. The tank is made of carbon S235JR or 304/316L stainless steel, externally insulated with an additional layer of ArmaFlex and lined with a high-quality blue dermatine fabric. Both vertical and horizontal tank positioning is possible together with threaded, flanged or victaulic joints.

Wide range capacity compressor packs with cooling capacity from 50 kW to 900 kW. Designed for commercial and industrial applications with large power demand. Screw compressor packs are perfectly suitable for the cooling of ice rinks, production area or equipment and other industrial applications. The compressor pack can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Assembled in a special walk-in container, this unit is ideal for buildings where indoor installation is not possible. It can be placed outdoors – right next to the building, resulting in reduced installation costs and easy unit maintenance. Additional options, such as illumination, ventilation and heating can be integrated inside the container to make the service of the unit even more convenient.

Wide range capacity compressor packs with cooling capacity from 50 kW to 900 kW, perfectly suitable for various size applications. Screw compressor packs are perfectly suitable for the cooling of ice rinks, production area or equipment and other industrial applications. Compressor packs can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Assembled on an open welded frame with standard profile, this compressor pack is also available in a double-deck construction for higher capacity. Compressor pack also includes refrigerant filters, a receiver and a sight glass. Safety valve and pressure switches are added to increase the security of the unit.

Wide range capacity compressor packs with cooling capacity from 25 kW to 500 kW. Designed for commercial and industrial applications with large power demand. Reciprocating compressor packs are perfectly suitable for the cooling of large warehouse areas as well as other industrial buildings. The compressor pack can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Assembled in a special walk-in container, this unit is ideal for buildings where indoor installation is not possible. It can be placed outdoors – right next to the building, resulting in reduced installation costs and easy unit maintenance. Additional options, such as illumination, ventilation and heating can be integrated inside the container to make the service of the unit even more convenient. .

Wide range capacity compressor packs with cooling capacity from 25 kW to 500 kW. Designed for commercial and industrial applications with small to large power demand. Reciprocating compressor packs are perfectly suitable for the cooling of large warehouse areas as well as other industrial buildings. The compressor pack can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Built on an assembled frame with covers, this compressor pack can be designed in a variety of ways, depending on intended use. An additional „reach-in” container is included for easier unit control options. Compressor pack also includes refrigerant filters, a receiver and a sight glass. Safety valve and pressure switches are added to increase the security of the unit.

Wide range capacity compressor packs with cooling capacity from 25 kW to 500 kW, perfectly suitable for various size applications. Reciprocating compressor packs are perfectly suitable for the cooling of large warehouse areas as well as other industrial buildings. The compressor pack can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Assembled on an open welded frame with standard profile, this compressor pack is also available in a double deck construction for higher capacity. Compressor pack also includes refrigerant filters, a receiver and a sight glass. Safety valve and pressure switches are added to increase the security of the unit.

Wide range capacity compressor packs with cooling capacity from 7 kW to 170 kW, perfectly suitable for various size applications. Scroll compressor packs are perfectly suitable for the cooling of shops, cold rooms and general air conditioning systems. The compressor pack can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Assembled on an open welded frame with standard profile, this compressor pack is also available in a double-deck construction for higher capacity. Compressor pack also includes refrigerant filters, a receiver and a sight glass. Safety valve and pressure switches are added to increase the safety of the unit.

Wide range capacity compressor packs with cooling capacity from 7 kW to 170 kW. Designed for commercial and industrial applications with small to large power demand. Scroll compressor packs are perfectly suitable for the cooling of shops, refrigeration chambers and general air conditioning systems. The compressor pack can also be part of a larger refrigeration system. It is possible to choose the compressor pack for an existing condenser or purchase a compressor pack together with Refra condenser for convenience. Built on an assembled frame with covers, this compressor pack can be designed in a variety of ways, depending on intended use. Compressor pack also includes refrigerant filters, a receiver and a sight glass. Safety valve and pressure switches are added to increase the security of the unit. An additional 50 mm rock wool insulation can be supplemented for a super silent unit operation.

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.

Refra manufactures pump stations for waterloop systems with the cooling capacity from 30 kw to 250 kW. These systems produce distributed cooling at different temperatures with a single condensing water loop. Together with Refra pump stations, the system creates a fully integrated refrigeration technology that eliminates the need for complex refrigeration systems and greatly simplifies installation work. Built on a super slim assembled galvanized steel frame with powder coating. Standard selection includes single or dual pump with inverter, glycol tank with filling pump, shut-off valves, control board with controller and necessary control sensors as well as a three-way valve, manometers and a coarse cleaning filter. Extra features, such as emergency heat exchanger with full controls or bubble filter separator can be combined. An additional heat recovery pump can also be added to extract maximum efficiency from the system.

Refra heat exchangers for condensers are made of copper tubes and convert the system’s refrigerant gas to liquid form. Usually they are used for refrigeration equipment as a remote condenser or as a part of a condensing unit. Refra condenser coils are made using inner grooved or smooth copper tubes, which range from 5 mm to 12,7 mm in diameter. 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 from low to high capacities to fully meet customer needs.

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 air cooled condenser series, Created for small and large refrigeration or air conditioning systems used in commercial and industrial buildings with medium and high power demand. CV series units are ideal when high capacities are required in a limited installation space. This unit is Available heat capacity is up to 1,3 mW under nominal conditions (when Tcond is 45°C, Tamb is 30°C and R1234ZE. V shaped construction, assembled with inner grooved copper tubes, aluminum or copper fins and AC or EC fan motor technology. The galvanized steel and powder coated frame can be designed in various sizes.