Southway House
Southway Drive
North Common
Bristol BS30 5LW
01173 12 13 14
info@gft.uk.com

Freezing & Thawing

High speed defrosting is offered by Stalam who is a leader in Radio Frequency Defrosting.

Kometos logic controlled thawing technology utilities neat, a direct air flow, refrigeration technology and moisture. The end result is a high – quality product with minimum loss.

Thawing Systems

Thawing Systems

Kometos Oy provides thawing systems for efficient and controlled defrosting of any deep-frozen food products. Thawing equipment is perfectly suited e.g. for defrosting of meat, fish and poultry products. Integrated thawing rooms installed in customers’ premises, thawing containers as well as thawing equipment have been designed and manufactured to ensure processed progress of functions, which in turn translates into high levels of quality and hygiene of handled food products, as well as minimum product loss in the thawing process. If needed the thawing rooms’ capacity can be expanded by additional installation of stiffening equipment.     BENEFITS OF FINNCOLD THAWING SYSTEMS: 1. Wide range of applications The Finncold thawing technology is perfectly suited for controlled defrosting of deep-frozen food products 2. High-quality thawing process The PLC-controlled Finncold thawing technology utilises heat, controlled air flows, cryotechnology and humidity. The end result is a high quality product with minimum losses. 3. Fast and controlled thawing process The thawing programme developed by Kometos ensures a fast and controlled thawing process. The thawing process is controlled by temperature sensors. 4. Tested thawing method Only high quality components, tested in accordance with our plant’s quality system, are used in the Finncold thawing method. 5. Hygienic thawing process Only indoor air is used in the Finncold thawing process. Furthermore, thawing rooms and thawing containers are manufactured of moisture resistant and easily cleaned ST elements approved for foodstuffs, which allows guaranteeing hygiene during the defrosting process. 6. Storage mode Following the completion of the thawing process the Finncold thawing system automatically switches into the storage mode, keeping food products at the desired temperature. Moreover, thanks to the timed thawing programme the thawing process can be activated at a desired time. 7. Versatility Finncold units may be set up as thawing room solutions or as thawing containers outside the production facility. It is also possible to set up a thawing equipment solution in the customer’s existing premises. Furthermore, a thawing room solution can be provided as a drive-through...

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Thawing Module MTC-15

Thawing Module MTC-15

Overview FINNCOLD frozen products thawing systems operate along a PLC controlled thawing process, where temperature, air flow and humidity are controlled using temperature (product surface, – internal temperature – and room temperature) as well as humidity sensors. Air flow is controlled by a veriable frequency drive EC-fans. The thawing system is also supplied with cooling equipment making it possible to use the chamber for storage (max.48 hours) when the product’s target temperature has been achieved. Storage temperature = process target temperature until the system is stopped. The cooling equipment enables scheduled thawing (max.48 hours). Products can be placed in cabinet on beforehand while also setting the start time on the thawing process. In this instance the cabinet operates as cold storage (max -6) until the thawing process starts according to the set schedule.   Technical Specification Size 8890 x 2800 x 3100 Capacity 9-15 euro pallets (5400 – 9000 kg)/ process Area of activity -20°C (-18°C) … +2°C Product in E2-boxes or trolleys.-20°C (-18°C) … -2°C Carton packages + spacers between layers. Optimal thawing process is achieved when the product’s start temperature is -20°C (-18°C)  in case of both scheduled process and the so called direct thawing process. Defrosting time Varies by product/by packaging, indicative times: -20°C … -2°C                                               10-12 h -20°C … +2°C                                              16-24 h Structure The main electrical cabinet, cooling unit as well as water compressed air connections for the moistening unit are installed in an integrated technical compartment. Frame Self-supporting metal sub frame, 8 pcs support legs. Weight Total weight approx. 4 500 kg Power Unit Technology Cooling Hermetic refrigeration compressor, refrigerant R404, cooling capacity of 7.2 kW (-8°C / +32°C). If the temperature of the surrounding environment exceeds +32°C, the efficiency of the cooling compressor drops thus the thawing process is prolonged. Heating Electric resistor heating, power 60 kW Air circulation Air circulation with EC-fans (3pcs) Air flow guide Rising and lowering with a spindle motors PLC control Control plc KOMETOS. The operating panel is located outside the container next to the door. Thawing equipment can be connected to the client’s Ethernet data network through which Kometos has the opportunity for a secure service...

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Thawing Room MTS-24

Thawing Room MTS-24

Technical Specification   Size 7400 x 4400 x 3100 (4500)   Capacity 24 euro pallets (14 400 kg) / process   Range -20°C (-18°C) … +2°C Product in E2-boxes or trolleys. If the products are in boxes, thawing spacers must be inserted between the layers. Optimal thawing process is achieved when the product’s start temperature is -20°C (-18°C) for both the scheduled process and the   so called direct thawing process.   Defrosting time Varies by product/by packaging, indicative times: -20°C … -2°C 10-12 h -20°C … +2°C 16-24 h   Cooling Cooling by means of a cooling agent. A coolant available in the system of the plant, such as NH3, glycol, Freezium or similar. The solution is pumped to the heat exchanger delivered by Kometos. The machinery contains 2 cooling blocks. Cooling capacity requirement:   25 kW. Max. temperature of the solution: -15°C   Delivery limit The client shall supply and connect a pipeline from their own               cooling system to the valves delivered by Kometos. Kometos shall       deliver the required valves, heat exchangers, pumps and pipelines       from the heat exchanger to the room.   Heating Heating by means of a heating agent. A heated solution available in the systems of the plant, such as glycol, Freezium or similar. Heating capacity need: 90 kW. Minimum temperature of the solution: +40°C.   Delivery limit The client shall supply and connect a pipeline from their own               cooling system to the valves delivered by Kometos. The client shall provide for a possible supplementary filling of the system, if required.   Air circulation Air circulation with EC- fans   Intermediate level/ Air guide Electromechanical spindle motors for lifting and lowering the intermediate level.    PLC control Control PLC KOMETOS. The operating panel is located outside the room next to the door. Thawing equipment can be connected to the client’d Ethernet data network through which Kometos has the opportunity for a secure service connection. Interface Data Electrical connection 400 V 63/A/ room Water connection R½”, 4 bar Compressed air supply R½”, 2,8 bar Drain...

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Thawing Room MTS-18

Thawing Room MTS-18

Technical Specification Size 9165 x 2800 x 3100 Capacity 6-18 euro pallets (3 600 – 10 800 kg) / process Area of activity -20°C (-18°C) … -2°C Carton packages + spacers between layers Optimal thawing process is achieved when the product’s start temperature is -20°C (-18°C) in case of both the scheduled process and the so called direct thawing process. Defrosting time Varies by product/by packaging, indicative times: -20°C (-18°C) … -2°C                                  10 – 12 h   Interface Data Electrical Connection  400 V 125 A Water connection R¼”, 4 bar Compressed air supply R½”, 2,8 bar Drain...

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Thawing Room MTS-12 & MTS-15

Thawing Room MTS-12 & MTS-15

 Technical Specification   MTS-12 MTS-15 Size 6675 x 2800 x 3100 8145 x 2800 x 3100 Capacity 6-12 euro pallets (3600-7200 kg) / process 6-15 euro pallets (3600-9000 kg/process) Area of activity -20°C (-18°C) … +2°C Products in E2 boxes or trolleys -20°C (-18°C) … -2°C Carton packages + spaces between layers Optimal thawing process is achieved when the product’s start temperature is -20°C (-18°C) in case of both the scheduled process and the so called direct thawing process. Defrosting time Varies by product/by packaging, indicative times: -20°C…-2°C                         10-12 h -20°C…+2°C                        16-24 h Interface Data Electrical connection 400 V 125 A 400 V 125 A Water connection ½”, 4 bar ½”, 4 bar Compresses air supply R½”, 2,8 bar R½”, 2,8 bar Drain...

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Thawing Cabinet MTM-1 & MTM-2

Thawing Cabinet MTM-1 & MTM-2

 Technical Specification     MTM-1   MTM-2 Size 1500 x 1800 x 2800 2200 x 2200 x 3300 Capacity 1 trolley (500-660kg/process) 2 trolleys/pallets (1000-1200 kg/process) Area of activity -20°C…+2°C Products in trolley on the shelf -20°C…+2°C Products in trolleys on E2-boxes Defrosting time Varies by product/ by packaging, indicative times: -20° C … -2 C                 10-12h -20° C … +2 C                16-24h Varies by product/ by packaging, indicative times: -20° C … -2 C              10-12h -20° C … +2C              16-24h Weight of Cabinet Total weight approx. 650 kg Total weight approx. 850 kg Cooling Hermetic refrigeration compressor Hermetic refrigeration compressor Heating Electric resistor heating Electric resistor heating Air circulation Air circulation with EX-fans (2 pc) Air circulation with EX-fans PLC control Control PLC KOMETOS Control PLC KOMETOS   Interface Data   Electrical connection 400 V 36 A 400 V 36 A Water connection R½”, min. 4 bar R½”, min. 4 bar Compresses air supply R½”, 2,8 bar R½”, 2,8 bar Drain...

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Pork, Beef and Poultry Rapid Defrosting with Radio Frequency

Pork, Beef and Poultry Rapid Defrosting with Radio Frequency

In the meat processing industry, more than half of the raw material utilised is frozen: chicken, pork, beef, turkey, etc. This happens to ensure its preservation during transport between farms, processors and consumers. Sometimes the meat is purchased in large quantities when the price is lower, therefore, is frozen and stored for several weeks or months until processing. When meat has to be processed, it is often first tempered or thawed using conventional methods available. These methods introduce a number of difficulties directly related to the heat transfer mechanisms: heat transfer is an intrinsically slow mechanism and, the larger the size of product, the longer is the time necessary for the defrosting process; this introduces a long delay between the removal of the meat from the cold stores and the next processing stage; since bacteria survive at negative storage temperatures, in the slow defrosting process there is a considerable opportunity for bacteria growth in the product; proportionally high drip losses may result from lengthy defrosting time, causing changes in the product texture and leading to an immediate and significant economic loss; it is not possible to speed up the defrosting process by increasing the heating fluid temperature, as this could cause severe deterioration of the product surface; a long defrosting time makes it unavoidable to carry out the process discontinuously (batch operation), resulting in high handling costs; besides, breakage, bruising and other damages to the product may result from such handling. The drawbacks of conventional defrosting methods described above can be avoided using radio frequency (RF) fields to rapidly generate heat volumetrically within the product. The heating process is uniform and controlled, resulting in a significant reduction of drip losses. RF heating method offers flexibility in the production scheduling and is the ideal solution for many tempering, softening and thawing processes. HOW DOES THE RADIO FREQUENCY DEFROSTING WORK? The meat blocks are placed on the machine’s conveyor belt and are transferred through the RF unit (tunnel) passing between an upper and lower metallic plates. These plates (also called electrodes) form an electrical capacitor and the product in between the plates becomes the dielectric element of that capacitor. The electrode plates are connected to a radio frequency generator oscillating at a frequency of about 27 million cycles per second. When the RF generator supplies high frequency alternating voltage between the capacitor plates, the dipolar water molecules of the frozen meat will vibrate and rotate in the attempt to align themselves according to the fast changing opposite plates polarities. This phenomenon causes intermolecular friction, which will in turn generate heat rapidly and uniformly within the whole product mass regardless of its size, weight, shape and thermal conductivity. The amount of heat generated inside the product and the defrosting time are accurately controlled through the voltage applied on the electrode plates and the speed of the conveyor belt. STALAM:save the taste, keep the weight ! from Concept video&communication on Vimeo.   MACHINE CHARACTERISTICS Radio Frequency at 27,12 MHz. Construction in AISI 304 & 316 stainless steel submitted to anticorrosion treatments (passivation, pickling) and shot-peening finish. Protection level IP65: the external protection boxes of the RF generator are made of insulating sandwich-type panels with sheeting and bearing frame in AISI 304 stainless steel. Wide conveyor belt (up to 180 cm) made of certified food-grade rigid polyethylene modules or solid-surface reinforced polyester, depending on the product to be processed. Built-in conveyor belt & tunnel washing facilities and full internal access for cleaning...

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Fish & Seafood Rapid Defrosting with Radio Frequency

Fish & Seafood Rapid Defrosting with Radio Frequency

In the fish processing industry, more than half of the raw material utilised is frozen: squid, mackerel, shrimps, prawns, mussels, calamari, …etc. Seasonal fluctuations in the availability of fresh fish are a serious impediment to the continuous operation of processing plants: it is possible in principle to regulate fish supply discontinuities by freezing, without significantly impairing the quality of the final product. When fish has to be processed, it is often first tempered or defrosted using conventional methods available. These methods introduce a number of difficulties directly related to the heat transfer mechanisms: heat transfer is an intrinsically slow mechanism and, the larger the size of product, the longer is the time necessary for the defrosting process; this introduces a long delay between the removal of the fish from the cold stores and the next processing stage; since bacteria survive at negative storage temperatures, in the slow defrosting process there is a considerable opportunity for bacteria growth in the product; proportionally high drip losses may result from lengthy defrosting time, causing changes in the product texture and leading to an immediate and significant economic loss; it is not possible to speed up the defrosting process by increasing the heating fluid temperature, as this could cause severe deterioration of the product surface; a long defrosting time makes it unavoidable to carry out the process discontinuously (batch operation), resulting in high handling costs; besides, breakage, bruising and other damages to the product may result from such handling; The drawbacks of conventional defrosting methods described above can be avoided using radio frequency (RF) fields to rapidly generate heat volumetrically within the product. The heating process is uniform and controlled, resulting in a significant reduction of drip losses. RF heating method offers flexibility in the production scheduling and is the ideal solution for many tempering, softening and defrosting processes. HOW DOES THE RADIO FREQUENCY DEFROSTING METHOD WORK? The fish blocks or other packages are placed on the machine’s conveyor belt and are transferred through the RF unit (tunnel) passing between an upper and lower metallic plates. These plates (also called electrodes) form an electrical capacitor and the product in between the plates becomes the dielectric element of that capacitor. The electrode plates are connected to a radio frequency generator oscillating at a frequency of about 27 million cycles per second. When the RF generator supplies high frequency alternating voltage between the capacitor plates, the dipolar water molecules of the frozen fish will vibrate and rotate in the attempt to align themselves according to the fast changing opposite plates polarities. This phenomenon causes intermolecular friction, which will in turn generate heat rapidly and uniformly within the whole product mass regardless of its size, weight, shape and thermal conductivity. The amount of heat generated inside the product and defrosting time are accurately controlled through the voltage applied on the electrode plates and the speed of the conveyor belt. STALAM:bring me back to life! from Concept video&communication on Vimeo.   MACHINE CHARACTERISTIC Radio Frequency at 27,12 MHz. Construction in AISI 304 & 316 stainless steel submitted to anticorrosion treatments (passivation, pickling) and shot-peening finish. Protection level IP65: the external protection boxes of the RF generator are made of insulating sandwich-type panels with sheeting and bearing frame in AISI 304 stainless steel. Wide conveyor belt (up to 180 cm) made of certified food-grade rigid polyethylene modules or solid-surface reinforced polyester, depending on the product to be processed. Built-in conveyor belt & tunnel washing facilities and full internal access for...

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Batch Freezer for discontinuous cooling, freezing and surface hardening

Batch Freezer for discontinuous cooling, freezing and surface hardening

Cryogenic Freezing Cabinets Cryogenic batch freezers use liquefied carbon dioxide (LCO2) or liquefied nitrogen (LIN) for discontinuous cooling and freezing. Controlled injection of the cryogenic gas lowers the temperature in the cabinet as the gas immediately evaporates. The latent heat of evaporation is the main source of cooling energy. Fans spread the gas in the cabinet in a controlled way and efficiently transfer the cold to the product’s surface. Applications Cryogenic batch freezers are used for discontinuous cooling, freezing or crust-freezing for a wide range of products.  Normally the operator loads the product onto trolleys equipped with wheels, before pushing them into the freezer. Applications can be found in the food industry, the pharmaceutical and metallurgical industry. Features and Benefits Although Dohmeyer’s batch freezers exist in standard dimensions, we can design tailor made cabinets that suit the specific needs of any individual application. Dohmeyer’s batch freezers have walls with 140 mm of high performance thermal insulation. Thanks to vacuum insulation the floor is very low (26mm), with the entrance ramp integrated into the floor. Technical Data Ask for our technical...

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CryoRoll for IQF foodstuffs for continuous freezing of free rolling products

CryoRoll for IQF foodstuffs for continuous freezing of free rolling products

Cooling and mixing Rotary drum freezers consist of a sloping cylindrical drum, which is rotating around its axis. Product and cooling medium are loaded continuously at the highest entrance point of the drum. By the rotating movement, both are intensively mixed while, at the same time, sliding to the lower exit of the drum. The stirring movement and the mixing prevent products from clumping together. Special paddles can be built in to ensure this happens. Both liquid nitrogen (LIN) and liquid carbon dioxide (LCO2) can be used as cooling liquid. Exhaust fans at inlet and outlet extract the residual gases. Product infeed Rotary drum freezers require continuous input of product. Dohmeyer can propose buffer hoppers and supply conveyors to convert discontinuous product flows into continuous input. Applications Rotary drum freezers are best used for IQF freezing of free rolling, mostly small products. They are perfect for products consisting of separate pieces.  Applications in the food industry are abundant: rotary drums freeze individual pieces (granules, crumps, cubes.. ) of fish and meat, pasta, vegetables and precooked dishes to IQF quality. When wet or sticky products need to be frozen, we can cover the inner wall of the drum with a non-adhesive coating such as PTFE. Unique double drum design For certain products it is best to use a double drum:  the first, short and fast turning drum serves to freeze the surface of the product, the second, long and slow turning drum freezes the product in depth. Features and Benefits Dohmeyer’s cryogenic rotary drum freezers can be tailor made. Inclination, rotating speed, baffles,… can all be adapted to the specific needs of the customer. Rotary drum freezers are compact and often take up less space than other types of IQF freezing systems....

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