Optimal climate separation in cold stores Cold Store Air Curtains Model MAT

Easy access to cold store Cold stores are used for storage purposes and must be easily accessible for a transportation point of view. A separation between the cold store and the front hall is necessary to keep the temperature in the cold store constant. Without such separation, cold air will flow out of the cold store, while warm air will penetrate into the cold store. This will lead to energy loss. In addition, mist and ice will form in the cold store, because warm, humid air from the front hall mixes with cold, dry air in the store. Constant temperature Broken plastic strips do not screen off...

Cold store door poses an obstacle A cold store door screens off the doorway, but it also poses an obstacle to transport. Plastic strips and fast action doors make it possible to expedite transport, offering some degree of screening. Disadvantages of these solutions are that they do not offer continuous screening and that they lead to risks for forklift truck drivers.They also produce a logistics problem with opening of doors. No continuous screening Screening the doorway reduces the mixing of air from the cold store with that from the front hall, as long as such screening is actually functioning....

Biddle cold store air curtain To realise free access, guarantee a constant temperature, and radically reduce misting and icing-up, Biddle has developed the cold store air curtain. This air curtain is based on the Multi Air stream Technology (MAT) of Biddle. Cornelis Vrolijk's Visserij, IJmuiden (NL) Safer for staff Due to the excellent climate separation, a low degree of condensation occurs, so that little ice is deposited against walls, floors, ceilings and the cooling plant. This reduces the risk of slipping by a considerable amount. In addition, drivers of forklift trucks have an unobstructed...

Hygiene A cold store air curtain creates a contact-free screening of the doorway. It also keeps the temperature in the cold store constant. Within the framework of the HACCP guidelines, the MAT cold store air curtain thus adds value to cold store hygiene. The air curtain is made of stainless steel. Savings Use of a cold store air curtain may yield energy savings of up to 80% compared with an open door. Although the costs of purchasing an air curtain are 2 to 3 times higher than a conventional (quick-closing) door, the operating costs will be considerably lower. In some situations, a cold store...

Multi Air stream Technology The technology that forms the basis for the cold store air curtain is called “MAT”: Multi Air stream Technology. By producing three air streams, the cold store air curtain creates a screen between the cold store and the front hall. The air curtain draws air from both the cold store and the front hall, discharging both cold and warm air into the doorway. For such an air curtain to be created, two phenomena have to be prevented: turbulence and condensation. Prevention of condensation The outer two air streams are quite different in terms of temperature and absolute humidity...

Prevention of turbulence Rectified streams When air is discharged, it tends to diverge. This must be prevented, otherwise the three air streams would mix after all, and fail to reach the floor. The MAT cold store air curtain is provided with patented rectifier technology. Biddle has been applying this patented rectifier to its air curtains for some considerable time now. The special design of the discharge grille makes it difficult for the discharged air to diverge. The rectifier smoothes any turbulence generated by the fans, discharging the air in three straight, concentrated streams. The outlet...

Full-scale services Investing in a cold store air curtain is not straight forward – it begins with a comprehensive site inspection process and after the order, Biddle remains closely involved in the project. One of Biddle's advisers will visit the client to inspect the situation on site. If a Biddle air curtain turns out to be an appropriate solution, Biddle will submit a quotation and, if necessary, make recommendations for making constructional alterations. On request, Biddle can maintain contact with third parties, such as insulation specialists, electricians and contractors. Biddle can then...